CN109623284B - Optical insert machining method and optical insert - Google Patents
Optical insert machining method and optical insert Download PDFInfo
- Publication number
- CN109623284B CN109623284B CN201811624485.6A CN201811624485A CN109623284B CN 109623284 B CN109623284 B CN 109623284B CN 201811624485 A CN201811624485 A CN 201811624485A CN 109623284 B CN109623284 B CN 109623284B
- Authority
- CN
- China
- Prior art keywords
- grinding wheel
- pattern
- grinding
- appearance
- turning
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000003287 optical effect Effects 0.000 title claims abstract description 117
- 238000003754 machining Methods 0.000 title claims description 45
- 238000000034 method Methods 0.000 title claims description 34
- 238000000227 grinding Methods 0.000 claims abstract description 173
- 238000007514 turning Methods 0.000 claims abstract description 67
- 238000005498 polishing Methods 0.000 claims description 17
- 238000005520 cutting process Methods 0.000 claims description 11
- 238000004519 manufacturing process Methods 0.000 claims description 10
- 238000010438 heat treatment Methods 0.000 claims description 9
- 238000010791 quenching Methods 0.000 claims description 5
- 230000000171 quenching effect Effects 0.000 claims description 5
- 239000007787 solid Substances 0.000 claims description 3
- 238000003672 processing method Methods 0.000 abstract description 16
- 238000009434 installation Methods 0.000 description 7
- 238000003801 milling Methods 0.000 description 6
- 238000009760 electrical discharge machining Methods 0.000 description 5
- 238000010892 electric spark Methods 0.000 description 4
- 238000009826 distribution Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
- B60Q1/26—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic
- B60Q1/44—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic for indicating braking action or preparation for braking, e.g. by detection of the foot approaching the brake pedal
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
Abstract
The invention relates to a processing method of an optical insert, which comprises the following steps: s1, roughly turning a pattern part corresponding to the pattern of the sighting device on a bar stock to obtain a positioning reference of the pattern part; s3, finishing the positioning reference of the step S1; s4, semi-finish turning or optical grinding the pattern part according to the positioning reference in the step S3. In addition, the invention also relates to an optical insert, which comprises a pattern part and a positioning part, wherein the pattern part corresponds to the pattern of the sight, the pattern part is a semi-revolving body, and the positioning part is arranged on the end surface of the pattern part. The processing method of the optical insert can realize the processing of the minimum processing fillet of the insert pattern, and greatly improves the processing precision of the sight pattern. In addition, the optical insert manufactured by the processing method of the optical insert has the advantage of small processing fillet.
Description
Technical Field
The invention relates to the technical field of dies, in particular to a processing method of an optical insert and the optical insert.
Background
In an automobile tail high-mounted stop lamp, in order to obtain the light shape and the light brightness required by design, a plastic optical component is usually arranged in the light emitting direction of an LED lamp. The principle is as follows: light emitted by the LED lamp is subjected to multiple reflection and refraction of sight patterns, fresnel patterns and micro-optical patterns on the plastic optical component, so that the light shape and the light brightness required by design are obtained.
Therefore, the plastic optical component has important optical function in the automobile tail high-mounted brake lamp, and the corresponding mold cavity processing precision requirement is extremely high. The sight pattern refracts/reflects the light of the LED lamp for the first time, and the processing precision of the sight pattern has great influence on subsequent refraction/reflection, so that the processing precision of the sight pattern has great significance if reaching the standard. In addition, the applicant finds that important indexes influencing the pattern light distribution precision of the sighting device include the surface contour precision of the pattern surface and the fillet precision of the pattern included angle in the actual operation process, and if the indexes do not reach the standard, the light distribution precision of the plastic optical component is influenced.
In order to manufacture the pattern of the sight, it is necessary to place an insert having a pattern corresponding to the pattern of the sight in the mold cavity, and the machining accuracy of the pattern of the insert will affect the machining accuracy of the pattern of the sight. In the past, milling or EDM electric spark discharge machining is mainly adopted for machining the inserts aiming at the patterns of the sighting device.
For milling, please refer to fig. 1, fig. 1 is a schematic structural diagram of a conventional insert, which includes a base 1 and a pattern 2 of a semi-solid of revolution disposed on a top surface of the base 1, wherein a cross section of the pattern 2 is zigzag. In the actual machining process, since the milling cutter rotates at a high speed in the feeding process, a machining fillet is likely to appear at the joint 3 of the pattern 2 and the base 1 and the root 4 of the pattern 2, and the machining fillet can affect the light distribution effect. In addition, the diameter of the milling cutter is limited, the diameter of the smallest cutter of the milling cutter at present is 0.2mm, namely, the minimum value of a processing fillet of the pattern 2 can only reach R0.1mm, the scattering effect of the processing fillet on light is larger, and the theoretical light shape of the pattern of the optical sighting device can be greatly changed.
For EDM spark discharge machining, please continue to refer to fig. 1, in the actual machining process, EDM spark discharge machining still can make the connection 3 of the pattern 2 and the base 1, and the root 4 of the pattern 2 easily appear machining fillets. Although EDM electric spark machining can enable the machining fillet of the pattern 2 to be smaller than R0.05mm, the machining surface obtained by electric spark machining is too rough to reach the optical mirror surface level, and the light transmittance of the pattern of the sighting device is seriously affected. If the electric spark machining surface is polished to an optical mirror surface, the problem of polishing deformation is necessarily existed, the pattern surface profile of the sighting device cannot reach the standard, and finally the light shape is influenced.
Disclosure of Invention
In view of the above, an object of the present invention is to provide a machining method of an optical insert, which uses a machining method of turning and optical grinding to replace milling and EDM electric discharge machining in the related art, wherein the pattern of the insert is machined by using the tip of a turning tool or the tip of a grinding wheel, and the angle of the root of the pattern can be theoretically set to the angle of the tip, thereby realizing the machining of the minimum machining fillet of the pattern of the insert and greatly improving the machining precision of the pattern of a collimator. In addition, the invention also provides the optical insert manufactured by the processing method of the optical insert, which has the advantage of smaller processing fillet.
The processing method of the optical insert comprises the following steps:
s1, roughly turning a pattern part corresponding to the pattern of the sighting device on a bar stock to obtain a positioning reference of the pattern part;
s3, finishing the positioning reference of the step S1;
s4, semi-finish turning or optical grinding the pattern part according to the positioning reference in the step S3.
Compared with the prior art, the processing method of the optical insert reduces the processing fillet of the root of the pattern part by utilizing the tip fillet (minimum R0.05mm) of the turning tool or the tip fillet (minimum R0.03mm) of the grinding wheel, thereby reducing the processing fillet of the pattern of the insert. Wherein, the minimum processing fillet of the semi-finish turning pattern part can reach R0.1mm; the minimum processing fillet of the finish turning pattern part can be controlled to be smaller than R0.1mm, the processing surface can reach a sub-mirror surface, the polishing procedure is not needed to be carried out in the follow-up process, and the polishing deformation can be effectively avoided; the minimum processing fillet of the optical grinding pattern part can be controlled to be smaller than R0.1mm, the processing surface can reach a sub-mirror surface, the polishing procedure is not needed to be carried out in the follow-up process, and the polishing deformation can be effectively avoided. In addition, for the semi-finish turning or finish turning pattern part, the processing method can be completed on a lathe, so that the workpiece assembly times are reduced, and the processing error of the workpiece is effectively reduced.
Further, the method further comprises a step S2 arranged between the step S1 and the step S3, wherein the step S2 is to perform heat treatment on the workpiece after rough machining.
By adopting the technical scheme, the hardness of the workpiece is improved, and the workpiece is effectively prevented from deforming in the subsequent process.
Further, in step S2, the rough machined workpiece is subjected to quenching treatment, and the hardened workpiece has a hardness of 46 to 48HRC.
Further, the processing method comprises the following steps:
s1, roughly turning a pattern part corresponding to the pattern of the sight and a positioning part arranged on the end face of the pattern part on a bar stock, wherein the end face of the positioning part is an end face reference, and the side face of the positioning part is a cylindrical surface reference;
s2, performing heat treatment on the workpiece after rough machining;
s3, finish turning an end face reference and a cylindrical surface reference;
s4, finish turning the pattern part according to the end surface reference and the cylindrical surface reference in the step S3;
s5, linearly cutting an installation part for installing the insert on the workpiece;
s6, grinding the plane of the mounting part.
By adopting the technical scheme, the processing fillet at the root of the pattern part is controlled to be smaller than or equal to R0.05mm by finely turning the pattern part, so that the processed surface can reach a sub-mirror surface, and the polishing deformation can be effectively avoided without performing a polishing procedure in the follow-up process; the mounting part is cut out in a linear cutting mode, so that the stress deformation of the workpiece in the machining process is effectively avoided; next, the mounting accuracy of the optical insert is improved by grinding the plane of the mounting portion.
Further, the processing method comprises the following steps:
s1, roughly turning a pattern part corresponding to the pattern of the sight and a positioning part arranged on the end face of the pattern part on a bar stock, wherein the end face of the positioning part is an end face reference, and the side face of the positioning part is a cylindrical surface reference;
s2, performing heat treatment on the workpiece after rough machining;
s3, finely grinding an end face reference and a cylindrical surface reference;
s5, linearly cutting an installation part for installing the insert on the workpiece;
s6, grinding the plane of the mounting part;
s4, optically grinding the pattern part according to the end surface reference and the cylindrical surface reference in the step S3; specifically, turning the outline of the grinding wheel under the condition that the optical image is enlarged by 20 to 50 times, so that the included angle of the sharp angle of the grinding wheel is smaller than the included angle of the workpiece by 2 degrees, and the radius of the sharp angle of the grinding wheel is smaller than or equal to 0.03m; detecting the outline of the grinding wheel under the condition of 20-50 times of optical image enlargement, if the outline of the grinding wheel is unqualified, continuing turning the outline of the grinding wheel, and if the outline of the grinding wheel is qualified, grinding the pattern part by the grinding wheel under the condition of 20-50 times of optical image enlargement, wherein the feed rate of the grinding wheel under rough grinding is 0.01m, and the feed rate of the grinding wheel under fine grinding is 0.002mm; and (3) dynamically detecting the appearance of the grinding wheel under the condition that the optical image is enlarged by 20 to 50 times, if the appearance of the grinding wheel is qualified, continuing to grind the pattern part of the grinding wheel, and if the appearance of the grinding wheel is unqualified, turning the outline of the grinding wheel under the condition that the optical image is enlarged by 20 to 50 times, and dynamically detecting the appearance of the grinding wheel after turning is finished.
By adopting the technical scheme, the mounting part is cut out in a linear cutting mode, so that the stress deformation of the workpiece in the processing process is effectively avoided, and the workpiece is convenient to mount in the optical grinding process; then, the mounting accuracy of the optical insert is improved by grinding the plane of the mounting portion; the pattern part is ground optically, the processing fillet at the root of the pattern part is controlled to be smaller than or equal to R0.03mm, the processing surface can reach a sub-mirror surface, the polishing procedure is not needed subsequently, and polishing deformation can be effectively avoided.
Further, the processing method comprises the following steps:
s1, roughly turning a pattern part corresponding to the pattern of the sight and a positioning part arranged on the end face of the pattern part on a bar stock, wherein the end face of the positioning part is an end face reference, and the side face of the positioning part is a cylindrical surface reference;
s2, performing heat treatment on the workpiece after rough machining;
s3, finish turning an end face reference and a cylindrical surface reference;
s4, semi-finish turning the pattern part according to the end surface reference and the cylindrical surface reference in the step S3;
s5, linearly cutting an installation part for installing the insert on the workpiece;
s6, grinding the plane of the mounting part;
s7, optically polishing the pattern part.
By adopting the technical scheme, the machining fillet of the root part of the pattern part reaches R0.1mm through semi-finish turning of the pattern part, and then the pattern part is machined by optical grinding, so that the machining fillet of the root part of the pattern part can reach R0.03mm, and the machining precision of the insert is effectively improved; before optical grinding, the mounting part is cut out in a linear cutting mode, so that the stress deformation of the workpiece in the machining process is effectively avoided, and the workpiece is convenient to mount in the optical grinding process; next, the mounting accuracy of the optical insert is improved by grinding the plane of the mounting portion.
Further, the step S7 includes:
s71, turning the outline of the grinding wheel under the condition that the optical image is amplified by 20 to 50 times;
s72, detecting the appearance of the grinding wheel under the condition that the optical image is amplified by 20 to 50 times, if the appearance of the grinding wheel is unqualified, continuing to carry out the step S71, and if the appearance of the grinding wheel is qualified, carrying out the next step;
s73, grinding the pattern part by using a grinding wheel under the condition that the optical image is enlarged by 20 to 50 times.
By adopting the technical scheme, the sharp corner radius of the grinding wheel is controlled, and the machining precision of a workpiece is controlled.
Further, the step S7 includes:
s71, turning the outline of the grinding wheel under the condition that the optical image is enlarged by 20 to 50 times, so that the included angle of the sharp angle of the grinding wheel is smaller than the included angle of a workpiece by 2 degrees, and the radius of the sharp angle of the grinding wheel is smaller than or equal to 0.03m;
s72, detecting the appearance of the grinding wheel under the condition that the optical image is amplified by 20 to 50 times, if the appearance of the grinding wheel is unqualified, continuing to carry out the step S71, and if the appearance of the grinding wheel is qualified, carrying out the next step;
s73, under the condition that the optical image is enlarged by 20 to 50 times, grinding the pattern part by the grinding wheel, wherein the feeding amount of the grinding wheel under rough grinding is 0.01m, and the feeding amount of the grinding wheel under fine grinding is 0.002mm;
s74, dynamically detecting the appearance of the grinding wheel under the condition that the optical image is amplified by 20 to 50 times, if the appearance of the grinding wheel is qualified, continuing to carry out the step S73, and if the appearance of the grinding wheel is unqualified, carrying out the next step;
and S75, turning the outline of the grinding wheel under the condition that the optical image is enlarged by 20 to 50 times, and performing step S74 after turning.
By adopting the technical scheme, the sharp corner radius of the grinding wheel is controlled, and the machining precision of a workpiece is controlled.
The optical insert comprises a pattern part and a positioning part, wherein the pattern part corresponds to the pattern of the sight, the pattern part is a semi-solid of revolution, and the positioning part is arranged on the end face of the pattern part.
Compared with the prior art, the optical insert has the pattern part which is half of the revolution body and is roughly machined by a turning mode, and then the machining fillet of the root part of the pattern part is reduced by utilizing the tip fillet (minimum R0.05mm) of the turning tool or the tip fillet (minimum R0.03mm) of the grinding wheel, so that the machining fillet of the insert pattern is reduced. Wherein, the minimum processing fillet of the semi-finish turning pattern part can reach R0.1mm; the minimum processing fillet of the finish turning pattern part can be controlled to be smaller than R0.1mm, the processing surface can reach a sub-mirror surface, the polishing procedure is not needed to be carried out in the follow-up process, and the polishing deformation can be effectively avoided; the minimum processing fillet of the optical grinding pattern part can be controlled to be smaller than R0.1mm, the processing surface can reach a sub-mirror surface, the polishing procedure is not needed to be carried out in the follow-up process, and the polishing deformation can be effectively avoided. In addition, for half finish turning or finish turning pattern parts, the optical insert can be finished on a trolley machine, so that the assembly times of workpieces are reduced, and the machining errors of the workpieces are effectively reduced.
Further, the axial section of the pattern section is zigzag, the radius of a processing fillet at the root of the pattern section is 0.03mm, and the included angle of the root of the pattern section is larger than the included angle of the sharp angle of the grinding wheel by 2 degrees; the section of the positioning part is square, and the bottom surface of the positioning part is parallel to the bottom surface of the pattern section; the mounting part is arranged on the bottom surface of the pattern part and is used for mounting the optical insert; the optical insert is quenched to a hardness of 46 to 48HRC prior to finishing.
By adopting the technical scheme, the included angle of the root of the pattern section is 2 degrees larger than the included angle of the sharp angle of the grinding wheel, so that the root of the pattern section can be ground by the grinding wheel conveniently; the section of the positioning part is square, so that the processing and the installation are convenient; the hardness of the quenched optical insert is 46-48 HRC, so that the optical insert is effectively prevented from being deformed in the subsequent process.
For a better understanding and implementation, the present invention is described in detail below with reference to the drawings.
Drawings
FIG. 1 is a schematic view of a prior art insert;
FIG. 2 is a schematic view of an optical insert according to the present invention;
FIG. 3 is a flow chart of a method of fabricating an optical insert according to an embodiment;
FIG. 4 is a flow chart of a method of fabricating an optical insert according to a second embodiment;
FIG. 5 is a flow chart of a method of fabricating an optical insert according to embodiment III;
fig. 6 is a flowchart of step S7 in the third embodiment;
FIG. 7 is a schematic view of the optical insert after completion of step S1;
FIG. 8 is a schematic view of the optical insert after completion of step S3;
FIG. 9 is a schematic view of the optical insert after completion of step S5;
reference numerals:
1. a base; 2. a pattern; 3. a junction; 4. root part;
10. a pattern portion; 20. a positioning part; 21. an end surface reference; 22. a cylindrical reference; 30. and a mounting part.
Detailed Description
An optical insert, see fig. 2, includes a pattern portion, a positioning portion, and a mounting portion. The axial section of the pattern section is zigzag, the radius of a processed fillet at the root of the pattern section is 0.03mm, and the included angle of the root of the pattern section is larger than the included angle of the sharp angle of the grinding wheel by 2 degrees. The positioning part is arranged on the right end face of the pattern part and serves as a reference for processing the pattern part, specifically, the cross section of the positioning part is square, and the bottom face of the positioning part is parallel to the bottom face of the pattern section. The mounting portion is provided on the bottom surface of the pattern portion for mounting the optical insert. In addition, the optical insert is quenched to a hardness of 46 to 48HRC prior to finishing.
In order to process the optical insert, the invention provides three processing methods, the processing principle of the three processing methods is that the pattern of the insert is processed by the tool nose of a turning tool or the tool nose of a grinding wheel, and the included angle of the root of the pattern can be theoretically made to be the angle of the tool nose, thereby realizing the processing of the minimum processing fillet of the pattern of the insert.
Because the tool tip of the turning tool or the grinding wheel has a round angle, the root of the pattern of the insert still has the problem of processing the round angle. However, the minimum of the tool nose fillet of the turning tool can be R0.05mm, the minimum of the tool nose fillet of the grinding wheel can be R0.03mm, the processing fillet of the pattern of the insert can still be controlled below R0.1mm by adopting the processing method of the optical insert, and the processing of the processing fillet R0.03mm of the pattern of the insert can also be realized.
Example 1
A method of processing an optical insert, see fig. 3, comprising the steps of:
s0, purchasing bar stock;
s1, roughly turning a pattern part corresponding to the pattern of the sighting device on a bar stock to obtain a positioning reference of the pattern part;
specifically, referring to fig. 7, a pattern portion corresponding to the pattern of the sight and a positioning portion disposed on the end face of the pattern portion are digitally controlled and rough turned on the bar, at this time, the pattern portion is a revolution body, the positioning portion is a cylinder, the positioning portion is coaxial with the pattern portion, the end face of the positioning portion is an end face reference, and the side face of the positioning portion is a cylindrical surface reference;
s2, performing heat treatment on the workpiece after rough machining;
specifically, quenching the rough machined workpiece, wherein the hardness of the quenched workpiece is 46-48 HRC;
s3, finishing the positioning reference of the step S1;
specifically, referring to fig. 8, the end surface reference and the cylindrical surface reference are numerically controlled and precisely turned;
s4, according to the end surface reference and the cylindrical surface reference in the step S3, finely turning the surface and the root of the pattern part;
specifically, machining fillets of the root of the numerical control finish turning pattern part to be R0.08mm;
s5, linearly cutting an installation part for installing the insert on the workpiece;
specifically, referring to fig. 9, square mounting portions are cut out at the bottom of the pattern portion;
s6, grinding the plane of the mounting part;
specifically, referring to fig. 2, the outer side surfaces of the positioning portion and the mounting portion are ground, so that the positioning portion and the mounting portion are processed into a rectangular parallelepiped.
Example two
A method of processing an optical insert, see fig. 4, comprising the steps of:
s0, purchasing bar stock;
s1, roughly turning a pattern part corresponding to the pattern of the sighting device on a bar stock to obtain a positioning reference of the pattern part;
specifically, referring to fig. 7, a pattern portion corresponding to the pattern of the sight and a positioning portion disposed on the end face of the pattern portion are digitally controlled and rough turned on the bar, at this time, the pattern portion is a revolution body, the positioning portion is a cylinder, the positioning portion is coaxial with the pattern portion, the end face of the positioning portion is an end face reference, and the side face of the positioning portion is a cylindrical surface reference;
s2, performing heat treatment on the workpiece after rough machining;
specifically, quenching the rough machined workpiece, wherein the hardness of the quenched workpiece is 46-48 HRC;
s3, finishing the positioning reference of the step S1;
specifically, referring to fig. 8, the end surface reference and the cylindrical surface reference are numerically controlled and precisely turned;
s5, linearly cutting an installation part for installing the insert on the workpiece;
specifically, referring to fig. 9, square mounting portions are cut out at the bottom of the pattern portion;
s6, grinding the plane of the mounting part;
specifically, referring to fig. 2, the outer side surfaces of the positioning portion and the mounting portion are ground, so that the positioning portion and the mounting portion are processed into a cuboid;
s4, optically grinding the pattern part according to the end surface reference and the cylindrical surface reference in the step S3; specifically, turning the outline of the grinding wheel under the condition that the optical image is enlarged by 20 to 50 times, so that the included angle of the sharp angle of the grinding wheel is smaller than the included angle of the workpiece by 2 degrees, and the radius of the sharp angle of the grinding wheel is smaller than or equal to 0.03m; detecting the outline of the grinding wheel under the condition of 20-50 times of optical image enlargement, if the outline of the grinding wheel is unqualified, continuing turning the outline of the grinding wheel, and if the outline of the grinding wheel is qualified, grinding the pattern part by the grinding wheel under the condition of 20-50 times of optical image enlargement, wherein the feed rate of the grinding wheel under rough grinding is 0.01m, and the feed rate of the grinding wheel under fine grinding is 0.002mm; during the process, dynamically detecting the appearance of the grinding wheel under the condition that the optical image is enlarged by 20 to 50 times, if the appearance of the grinding wheel is qualified, continuing to grind the pattern part of the grinding wheel, and if the appearance of the grinding wheel is unqualified, turning the outline of the grinding wheel under the condition that the optical image is enlarged by 20 to 50 times, and dynamically detecting the appearance of the grinding wheel after turning is finished; and, the machined rounded corners of the root of the pattern portion were optically ground to r0.05mm using an optical projection grinder.
Example III
A method of processing an optical insert, see fig. 5, comprising the steps of:
s1, roughly turning a pattern part corresponding to the pattern of the sighting device on a bar stock to obtain a positioning reference of the pattern part;
specifically, referring to fig. 7, a pattern portion corresponding to the pattern of the sight and a positioning portion disposed on the end face of the pattern portion are digitally controlled and rough turned on the bar, at this time, the pattern portion is a revolution body, the positioning portion is a cylinder, the positioning portion is coaxial with the pattern portion, the end face of the positioning portion is an end face reference, and the side face of the positioning portion is a cylindrical surface reference;
s2, performing heat treatment on the workpiece after rough machining;
specifically, quenching the rough machined workpiece, wherein the hardness of the quenched workpiece is 46-48 HRC;
s3, finishing the positioning reference of the step S1;
specifically, referring to fig. 8, the end surface reference and the cylindrical surface reference are numerically controlled and precisely turned;
s4, semi-finish turning the pattern part according to the end surface reference and the cylindrical surface reference in the step S3;
specifically, machining fillets of the root of the numerical control semi-finish turning pattern part to R0.1mm;
s5, linearly cutting an installation part for installing the insert on the workpiece;
specifically, referring to fig. 9, square mounting portions are cut out at the bottom of the pattern portion;
s6, finely grinding the plane of the mounting part, the surface of the pattern part and the root of the pattern part;
specifically, referring to fig. 2, the outer side surfaces of the positioning part and the mounting part are finely ground, so that the positioning part and the mounting part are processed into cuboid, the mounting is convenient, and the processed round angle of the root part of the pattern part reaches R0.06 to R0.08mm;
s7, optically polishing the pattern part;
specifically, the optical projection grinder grinds the surface of the pattern portion and the root portion thereof under the magnification of 20 to 50 times of the optical image, so that the processed rounded corner of the root portion of the pattern reaches R0.03mm.
Referring to fig. 6, step S7 specifically includes the following steps:
s71, turning the outline of the grinding wheel under the condition that the optical image is enlarged by 20 to 50 times, so that the included angle of the sharp angle of the grinding wheel is smaller than the included angle of a workpiece by 2 degrees, and the radius of the sharp angle of the grinding wheel is smaller than or equal to 0.03m;
s72, detecting the appearance of the grinding wheel under the condition that the optical image is amplified by 20 to 50 times, if the appearance of the grinding wheel is unqualified, continuing to carry out the step S71, and if the appearance of the grinding wheel is qualified, carrying out the next step;
s73, under the condition that the optical image is enlarged by 20 to 50 times, grinding the pattern part by the grinding wheel, wherein the feeding amount of the grinding wheel under rough grinding is 0.01m, and the feeding amount of the grinding wheel under fine grinding is 0.002mm;
s74, dynamically detecting the appearance of the grinding wheel under the condition that the optical image is amplified by 20 to 50 times, if the appearance of the grinding wheel is qualified, continuing to carry out the step S73, and if the appearance of the grinding wheel is unqualified, carrying out the next step;
and S75, turning the outline of the grinding wheel under the condition that the optical image is enlarged by 20 to 50 times, and performing step S74 after turning.
Compared with the prior art, the processing method of the optical insert utilizes the tool nose of the turning tool or the tool nose of the grinding wheel to process the patterns of the insert, and can theoretically lead the included angle of the root of the patterns to be the angle of the tool nose, thereby realizing the processing of the minimum processing fillet of the patterns of the insert and greatly improving the processing precision of the patterns of the sighting device. In addition, the invention also provides the optical insert manufactured by the processing method of the optical insert, which has the advantage of smaller processing fillet.
The above examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention.
Claims (8)
1. A method of processing an optical insert, the method comprising the steps of:
s1, roughly turning a pattern part (10) corresponding to the pattern of the sighting device and a positioning reference of the pattern part (10) on a bar stock; specifically, a pattern part (10) corresponding to the pattern of the sight and a positioning part (20) arranged on the end surface of the pattern part (10) are turned on a bar in a rough mode, the end surface of the positioning part (20) is an end surface reference (21), and the side surface of the positioning part (20) is a cylindrical surface reference (22);
s2, performing heat treatment on the workpiece after rough machining;
s3, finishing the positioning reference of the step S1; specifically, a finish grinding end surface reference (21) and a cylindrical surface reference (22);
s4, semi-finish turning or optical grinding the pattern part (10) according to the positioning reference in the step S3; specifically, the pattern portion (10) is optically polished according to the end surface reference (21) and the cylindrical surface reference (22) of step S3; specifically, turning the outline of the grinding wheel under the condition that the optical image is enlarged by 20 to 50 times, so that the included angle of the sharp angle of the grinding wheel is smaller than the included angle of the workpiece by 2 degrees, and the radius of the sharp angle of the grinding wheel is smaller than or equal to 0.03m; detecting the outline of the grinding wheel under the condition of 20-50 times of optical image enlargement, if the outline of the grinding wheel is unqualified, continuing turning the outline of the grinding wheel, if the outline of the grinding wheel is qualified, grinding the pattern part (10) by the grinding wheel under the condition of 20-50 times of optical image enlargement, wherein the feed rate of the grinding wheel under rough grinding is 0.01m, and the feed rate of the grinding wheel under fine grinding is 0.002mm; during the process, dynamically detecting the appearance of the grinding wheel under the condition of 20-50 times of optical image magnification, if the appearance of the grinding wheel is qualified, continuing to grind the pattern part (10) of the grinding wheel, if the appearance of the grinding wheel is unqualified, turning the outline of the grinding wheel under the condition of 20-50 times of optical image magnification, and dynamically detecting the appearance of the grinding wheel after turning is finished;
s5, linearly cutting a mounting part (30) for mounting the insert on the workpiece;
s6, grinding the plane of the mounting part (30).
2. The method of manufacturing an optical insert according to claim 1, wherein: in step S2, the rough machined workpiece is subjected to quenching treatment, and the hardness of the quenched workpiece is 46 to 48HRC.
3. The method of manufacturing an optical insert according to claim 1, further comprising the steps of: s7, optically polishing the pattern part (10).
4. The method of manufacturing an optical insert according to claim 3, wherein the step S7 includes:
s71, turning the outline of the grinding wheel under the condition that the optical image is amplified by 20 to 50 times;
s72, detecting the appearance of the grinding wheel under the condition that the optical image is amplified by 20 to 50 times, if the appearance of the grinding wheel is unqualified, continuing to carry out the step S71, and if the appearance of the grinding wheel is qualified, carrying out the next step;
s73, grinding the pattern part (10) by the grinding wheel under the condition that the optical image is enlarged by 20 to 50 times.
5. The method of manufacturing an optical insert according to claim 4, wherein the step S7 includes:
s71, turning the outline of the grinding wheel under the condition that the optical image is enlarged by 20 to 50 times, so that the included angle of the sharp angle of the grinding wheel is smaller than the included angle of a workpiece by 2 degrees, and the radius of the sharp angle of the grinding wheel is smaller than or equal to 0.03m;
s72, detecting the appearance of the grinding wheel under the condition that the optical image is amplified by 20 to 50 times, if the appearance of the grinding wheel is unqualified, continuing to carry out the step S71, and if the appearance of the grinding wheel is qualified, carrying out the next step;
s73, under the condition that the optical image is enlarged by 20 to 50 times, grinding the pattern part (10) by the grinding wheel, wherein the feeding amount of the grinding wheel under rough grinding is 0.01m, and the feeding amount of the grinding wheel under fine grinding is 0.002mm;
s74, dynamically detecting the appearance of the grinding wheel under the condition that the optical image is amplified by 20 to 50 times, if the appearance of the grinding wheel is qualified, continuing to carry out the step S73, and if the appearance of the grinding wheel is unqualified, carrying out the next step;
and S75, turning the outline of the grinding wheel under the condition that the optical image is enlarged by 20 to 50 times, and performing step S74 after turning.
6. A method of processing an optical insert, the method comprising the steps of:
s1, roughly turning a pattern part (10) corresponding to the pattern of the sighting device and a positioning reference of the pattern part (10) on a bar stock; specifically, a pattern part (10) corresponding to the pattern of the sight and a positioning part (20) arranged on the end surface of the pattern part (10) are turned on a bar in a rough mode, the end surface of the positioning part (20) is an end surface reference (21), and the side surface of the positioning part (20) is a cylindrical surface reference (22);
s2, performing heat treatment on the workpiece after rough machining;
s3, finishing the positioning reference of the step S1; specifically, a finish grinding end surface reference (21) and a cylindrical surface reference (22);
s4, semi-finish turning the pattern part (10) according to the positioning reference in the step S3;
s5, linearly cutting a mounting part (30) for mounting the insert on the workpiece;
s6, grinding the plane of the mounting part (30);
s7, optically polishing the pattern part (10); specifically, the step S7 includes:
s71, turning the outline of the grinding wheel under the condition that the optical image is enlarged by 20 to 50 times, so that the included angle of the sharp angle of the grinding wheel is smaller than the included angle of a workpiece by 2 degrees, and the radius of the sharp angle of the grinding wheel is smaller than or equal to 0.03m;
s72, detecting the appearance of the grinding wheel under the condition that the optical image is amplified by 20 to 50 times, if the appearance of the grinding wheel is unqualified, continuing to carry out the step S71, and if the appearance of the grinding wheel is qualified, carrying out the next step;
s73, under the condition that the optical image is enlarged by 20 to 50 times, grinding the pattern part (10) by the grinding wheel, wherein the feeding amount of the grinding wheel under rough grinding is 0.01m, and the feeding amount of the grinding wheel under fine grinding is 0.002mm;
s74, dynamically detecting the appearance of the grinding wheel under the condition that the optical image is amplified by 20 to 50 times, if the appearance of the grinding wheel is qualified, continuing to carry out the step S73, and if the appearance of the grinding wheel is unqualified, carrying out the next step;
and S75, turning the outline of the grinding wheel under the condition that the optical image is enlarged by 20 to 50 times, and performing step S74 after turning.
7. The method of manufacturing an optical insert according to claim 1 or 6, wherein: the optical insert comprises a pattern part (10) and a positioning part (20), wherein the pattern part (10) corresponds to the pattern of the sighting device, the pattern part (10) is a semi-solid of revolution, and the positioning part (20) is arranged on the end face of the pattern part (10).
8. The method of manufacturing an optical insert according to claim 6, wherein:
the axial section of the pattern section is zigzag, the radius of a processed fillet at the root of the pattern section is 0.03mm, and the included angle of the root of the pattern section is 2 degrees larger than the included angle of the sharp angle of the grinding wheel;
the section of the positioning part (20) is square, and the bottom surface of the positioning part is parallel to the bottom surface of the pattern section;
the mounting part (30) is arranged on the bottom surface of the pattern part (10) and is used for mounting the optical insert;
the optical insert is quenched to a hardness of 46 to 48HRC prior to finishing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811624485.6A CN109623284B (en) | 2018-12-28 | 2018-12-28 | Optical insert machining method and optical insert |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811624485.6A CN109623284B (en) | 2018-12-28 | 2018-12-28 | Optical insert machining method and optical insert |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109623284A CN109623284A (en) | 2019-04-16 |
| CN109623284B true CN109623284B (en) | 2023-11-14 |
Family
ID=66078845
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811624485.6A Active CN109623284B (en) | 2018-12-28 | 2018-12-28 | Optical insert machining method and optical insert |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109623284B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111347224B (en) * | 2019-12-30 | 2021-06-01 | 广州导新模具注塑有限公司 | Machining method of precise pattern insert and precise pattern insert |
| CN114248076B (en) * | 2021-12-31 | 2024-09-27 | 苏州群凯利精工股份有限公司 | Right-angle machining method for improved cutter head corner |
Citations (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH556716A (en) * | 1972-10-12 | 1974-12-13 | Doebeli Erhard | OPTICAL PROFILE GRINDING MACHINE. |
| US4704825A (en) * | 1986-09-02 | 1987-11-10 | Moore Special Tool Co., Inc. | Method for automatically sizing a ground surface on a workpiece |
| JPH02160403A (en) * | 1988-12-14 | 1990-06-20 | Olympus Optical Co Ltd | Machining method of insert die for stream surface armoring optical part |
| JP2001071242A (en) * | 1999-09-02 | 2001-03-21 | Nippei Toyama Corp | Grinding method and grinding device for work |
| JP2007125644A (en) * | 2005-11-04 | 2007-05-24 | Jtekt Corp | Truing device for grinding wheel |
| JP2010254515A (en) * | 2009-04-24 | 2010-11-11 | Hoya Corp | Manufacturing method of glass base material, manufacturing method of precision press-molding preform, and manufacturing method of glass optical element |
| CN102922234A (en) * | 2012-10-31 | 2013-02-13 | 贵州航飞精密制造有限公司 | Process for processing external threads of thin-wall threaded sleeve and threaded sleeve turning clamp used for same |
| CN103273282A (en) * | 2013-06-20 | 2013-09-04 | 贵州红林机械有限公司 | Method for machining high-accuracy special profile of elongated rod |
| CN103286533A (en) * | 2013-05-28 | 2013-09-11 | 重庆市首业机械制造有限公司 | Processing technology for rear axle drive bevel gear |
| CN103722182A (en) * | 2013-12-12 | 2014-04-16 | 郑丽萍 | Method for turning germanium lens |
| CN103753110A (en) * | 2014-01-09 | 2014-04-30 | 北华航天工业学院 | Thin-wall elliptical part numerical control machining method |
| CN103753126A (en) * | 2013-12-20 | 2014-04-30 | 柳州正菱集团有限公司 | Processing method for end faces of automobile bearing support centre hole portion |
| CN103978926A (en) * | 2014-06-03 | 2014-08-13 | 程进才 | Automobile reflex reflector |
| CN204382605U (en) * | 2015-01-05 | 2015-06-10 | 上海小糸车灯有限公司 | The decorative pattern insert ejecting structure of car light injection mold |
| CN108044129A (en) * | 2017-12-06 | 2018-05-18 | 中国人民解放军国防科技大学 | Ultra-precise turning method for high-gradient inner-outer cavity conformal optical element |
| CN108506327A (en) * | 2018-04-09 | 2018-09-07 | 张家港市海工船舶机械制造有限公司 | A kind of multi-diameter shaft and its processing method |
| CN108747825A (en) * | 2018-06-19 | 2018-11-06 | 湖南大学 | A kind of view-based access control model detection laser reconditioning forming grinding wheel device and its dressing method |
| CN209505574U (en) * | 2018-12-28 | 2019-10-18 | 广州导新模具注塑有限公司 | Optics mold insert |
-
2018
- 2018-12-28 CN CN201811624485.6A patent/CN109623284B/en active Active
Patent Citations (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH556716A (en) * | 1972-10-12 | 1974-12-13 | Doebeli Erhard | OPTICAL PROFILE GRINDING MACHINE. |
| US4704825A (en) * | 1986-09-02 | 1987-11-10 | Moore Special Tool Co., Inc. | Method for automatically sizing a ground surface on a workpiece |
| JPH02160403A (en) * | 1988-12-14 | 1990-06-20 | Olympus Optical Co Ltd | Machining method of insert die for stream surface armoring optical part |
| JP2001071242A (en) * | 1999-09-02 | 2001-03-21 | Nippei Toyama Corp | Grinding method and grinding device for work |
| JP2007125644A (en) * | 2005-11-04 | 2007-05-24 | Jtekt Corp | Truing device for grinding wheel |
| JP2010254515A (en) * | 2009-04-24 | 2010-11-11 | Hoya Corp | Manufacturing method of glass base material, manufacturing method of precision press-molding preform, and manufacturing method of glass optical element |
| CN102922234A (en) * | 2012-10-31 | 2013-02-13 | 贵州航飞精密制造有限公司 | Process for processing external threads of thin-wall threaded sleeve and threaded sleeve turning clamp used for same |
| CN103286533A (en) * | 2013-05-28 | 2013-09-11 | 重庆市首业机械制造有限公司 | Processing technology for rear axle drive bevel gear |
| CN103273282A (en) * | 2013-06-20 | 2013-09-04 | 贵州红林机械有限公司 | Method for machining high-accuracy special profile of elongated rod |
| CN103722182A (en) * | 2013-12-12 | 2014-04-16 | 郑丽萍 | Method for turning germanium lens |
| CN103753126A (en) * | 2013-12-20 | 2014-04-30 | 柳州正菱集团有限公司 | Processing method for end faces of automobile bearing support centre hole portion |
| CN103753110A (en) * | 2014-01-09 | 2014-04-30 | 北华航天工业学院 | Thin-wall elliptical part numerical control machining method |
| CN103978926A (en) * | 2014-06-03 | 2014-08-13 | 程进才 | Automobile reflex reflector |
| CN204382605U (en) * | 2015-01-05 | 2015-06-10 | 上海小糸车灯有限公司 | The decorative pattern insert ejecting structure of car light injection mold |
| CN108044129A (en) * | 2017-12-06 | 2018-05-18 | 中国人民解放军国防科技大学 | Ultra-precise turning method for high-gradient inner-outer cavity conformal optical element |
| CN108506327A (en) * | 2018-04-09 | 2018-09-07 | 张家港市海工船舶机械制造有限公司 | A kind of multi-diameter shaft and its processing method |
| CN108747825A (en) * | 2018-06-19 | 2018-11-06 | 湖南大学 | A kind of view-based access control model detection laser reconditioning forming grinding wheel device and its dressing method |
| CN209505574U (en) * | 2018-12-28 | 2019-10-18 | 广州导新模具注塑有限公司 | Optics mold insert |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109623284A (en) | 2019-04-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101504036B (en) | Manufacture equipment and process for roller bearing spherical roller | |
| CN109623284B (en) | Optical insert machining method and optical insert | |
| AU2004220409A1 (en) | Method and device for producing ophthalmic lenses and other shaped bodies with optically active surfaces | |
| CN106239835B (en) | A kind of manufacturing method of the smooth surface mold insert of injection mold | |
| JP2013521141A (en) | Automatic calibration | |
| CN102069241B (en) | Machining electrode for annular holes and machining method | |
| CN110842765A (en) | High-flatness inner step end face grinding tool and grinding method | |
| KR101043437B1 (en) | Spherical Forming Core Processing Method | |
| CN205438045U (en) | Interior surface grinding device | |
| CN108581566B (en) | Machining device and machining process for eccentric wheel of automobile engine | |
| CN107511489A (en) | The processing method of brake disc hub endoporus | |
| CN110520235A (en) | Forming taps | |
| CN105538085A (en) | Special-shaped lens machining method based on computer aided manufacturing (CAM) | |
| CN111015138B (en) | Processing method of powder metallurgy cross slip ring die | |
| CN103552185B (en) | Tungsten steel push rod and processing method thereof | |
| CN209505574U (en) | Optics mold insert | |
| CN112706009A (en) | Device for precisely calibrating dynamic shape precision of grinding wheel for numerical control tool grinding machine | |
| CN103934629B (en) | A kind of thin-walled membranous disc processing method of clamping of fitting based on soft tire | |
| CN103433815B (en) | The processing method of bolt head combination socket drill | |
| CN112496353B (en) | Diamond turning free-form surface rough turning process method | |
| CN113263401A (en) | Machining method of punch spare parts | |
| JP2628250B2 (en) | Outer diameter processing method of ceramic ferrule | |
| CN203542928U (en) | Tungsten steel push rod | |
| CN110936118A (en) | Method for manufacturing tungsten carbide material mold core | |
| KR100564104B1 (en) | In-line system for aspherical microlens processing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |