CN213470788U - Angular positioning device for camshaft - Google Patents
Angular positioning device for camshaft Download PDFInfo
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- CN213470788U CN213470788U CN202021886023.4U CN202021886023U CN213470788U CN 213470788 U CN213470788 U CN 213470788U CN 202021886023 U CN202021886023 U CN 202021886023U CN 213470788 U CN213470788 U CN 213470788U
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- camshaft
- chuck
- positioning
- angular
- positioning device
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Abstract
The utility model belongs to the technical field of camshafts, in particular to an angular positioning device of a camshaft, which comprises a positioning pin fixedly arranged on the camshaft and a chuck positioning component arranged at the end part of the camshaft; the chuck positioning assembly comprises a chuck, a reference positioning block arranged in the center of the chuck, a jacking positioning block arranged in the center of the reference positioning block and abutted against the side end face of the camshaft, and a clamping jaw arranged on the chuck and used for clamping the end part of the camshaft; and the reference positioning block is provided with an open slot which is abutted against the circumferential surface of the positioning pin and is used for positioning the angular reference of the camshaft. The utility model provides a camshaft angular positioning device can carry out accurate location to the camshaft angular to guarantee camshaft abrasive machining's precision.
Description
Technical Field
The utility model belongs to the technical field of the camshaft, concretely relates to camshaft angular positioning device.
Background
The camshaft is a component in a piston engine for controlling the opening and closing of the valves. Because the valve motion law is related to the power and the running characteristics of an engine, the camshaft design occupies a very important position in the design process of the engine. In the production process of cam grinding of the cam shaft, the cam shaft is always required to be subjected to initial angular positioning, so that the machining precision of the cam is ensured.
In the prior art, a pin hole is generally matched with a positioning pin to perform initial angular positioning on a camshaft, and equipment acts as follows when the camshaft is ground and guided into automatic feeding and discharging: the centers of the positioning disks at the two ends of the camshaft lightly push against the workpiece, the pressure is low at the moment, the positioning disks are forced to be in contact with the positioning pins, then the centers rotate to drive the workpiece subjected to angular coarse positioning to rotate, when the positioning pins are aligned with the angular positioning holes, the positioning pins are automatically inserted into the angular positioning holes, the pressure of the centers at the two ends is increased to reach the preset pressure, and the workpiece starts to be machined. In the process of finding the angle of the positioning pin to the positioning hole, the direct contact force between the positioning pin and the surface of the positioning disc is enough to change the distance between the positioning pin and the end surface of the workpiece, so that the positioning pin can continuously go deep into the workpiece, the positioning pin and the positioning disc slide relatively, the height of the positioning pin relative to the end surface is damaged, and the machining precision of the camshaft is further influenced. And because the gap between the pin hole and the positioning pin is small, the truss manipulator adopted when the cam grinding is guided into the automatic feeding and discharging does not automatically simulate the operation of inserting the workpiece pin into the angular positioning hole by manual operation.
SUMMERY OF THE UTILITY MODEL
In order to solve the defects of the prior art, the utility model provides a camshaft angular positioning device.
The utility model discloses the technological effect that will reach realizes through following technical scheme:
the camshaft angular positioning device comprises a positioning pin fixedly arranged on the camshaft and a chuck positioning component arranged at the end part of the camshaft; the chuck positioning assembly comprises a chuck, a reference positioning block arranged in the center of the chuck, a jacking positioning block arranged in the center of the reference positioning block and abutted against the side end face of the camshaft, and a clamping jaw arranged on the chuck and used for clamping the end part of the camshaft; and the reference positioning block is provided with an open slot which is abutted against the circumferential surface of the positioning pin and is used for positioning the angular reference of the camshaft.
Further, the reference positioning block is a cylindrical structure coaxially arranged with the chuck.
Further, the reference positioning block is a square column structure with a center position overlapping with the center of the chuck.
Further, the opening groove is a rectangular opening groove or a fan-shaped opening groove.
Furthermore, the opening angle corresponding to the fan-shaped opening groove is more than 15 degrees.
Further, chuck locating component includes the chuck, locate on the chuck, with the global benchmark locating plate that offsets of locating pin locates the chuck center, the tight locating piece in top that offsets with camshaft side end face to and locate on the chuck, be used for pressing from both sides the jack catch of tight camshaft tip.
Further, the benchmark locating plate is a U-shaped groove plate structure with an opening facing the periphery of the chuck.
Further, the reference positioning plate is a flat plate structure arranged in the radial direction of the chuck.
Furthermore, the jacking positioning block is in a conical structure or a circular truncated cone structure.
Furthermore, the clamping jaws are uniformly arranged on the chuck, and the number of the clamping jaws is two or more.
To sum up, the utility model discloses a camshaft angular positioning device has following useful part at least:
the utility model discloses a camshaft angular positioning device, the locating hole that will fix a position with the locating pin angular positioning changes into plane side angular positioning, the width of open slot and the scope that the thick location of reference locating plate can not restrict the location axle, the locating pin can directly fall into wherein, hold the camshaft work piece tightly by the tight locating piece support in top, the camshaft work piece is rotatory along with the chuck, guarantee that the locating pin is close to the side of open slot and reference locating plate, realize the required locating pin angular positioning of cam grinding, this angular positioning action in-process, the locating pin does not need the influence of axial force, therefore the height of locating pin just can not change yet.
Drawings
Fig. 1 is the assembly structure schematic diagram of the camshaft angular positioning device and the camshaft in embodiments 1 and 2 of the present invention.
Fig. 2 is a structural side view of the angular positioning device for a camshaft in embodiment 1 of the present invention.
Fig. 3 is a structural side view of the angular positioning device for a camshaft in embodiment 2 of the present invention.
Fig. 4 is an assembly structure schematic diagram of the camshaft angular positioning device and the camshaft in embodiments 3 and 4 of the present invention.
Fig. 5 is a structural side view of the angular positioning device for a camshaft in embodiment 3 of the present invention.
Fig. 6 is a structural side view of the angular positioning device for a camshaft in embodiment 4 of the present invention.
The reference numbers of the figures illustrate the following:
10. a camshaft; 100. positioning pins; 200. a chuck positioning assembly; 210. a chuck; 220. a reference positioning block; 230. tightly pushing the positioning block; 240. a claw; 201. an open slot; 220' and a reference positioning plate.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention will be combined to clearly and completely describe the technical solutions of the embodiments of the present invention. The described embodiments are some, but not all embodiments of the invention.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Example 1:
as shown in fig. 1 and 2, the angular positioning device for a camshaft in the present embodiment includes a positioning pin 100 fixed to a camshaft 10, and a chuck positioning assembly 200 provided at an end of the camshaft 10. The chuck positioning assembly 200 comprises a chuck 210, a reference positioning block 220 arranged in the center of the chuck 210, a jacking positioning block 230 arranged in the center of the reference positioning block 220 and abutted against the side end face of the camshaft 10, and a clamping jaw 240 arranged on the chuck 210 and used for clamping the end of the camshaft 10; and the reference positioning block 220 is provided with an opening groove 201 abutting against the circumferential surface of the positioning pin 100 for positioning the angular reference of the camshaft 10. The jacking positioning block 230 is in a conical structure or a circular truncated cone structure; the jaws 240 are uniformly arranged on the chuck 210, and the number of the jaws is two or more.
As shown in fig. 2, the reference positioning block 220 is a cylindrical structure coaxially disposed with the chuck 210; the open groove 201 is a rectangular open groove as shown in fig. 2 (a), or the open groove 201 is a fan-shaped open groove as shown in fig. 2 (b), and when the open groove 201 is a fan-shaped open groove, it is preferable that the fan-shaped open groove corresponds to an opening angle of 30 ° to 60 °.
Example 2:
the angular positioning device of the camshaft in the embodiment has the same structure as that of embodiment 1, and the main differences are as follows:
as shown in fig. 1 and 3, the reference positioning block 220 in the present embodiment is a square column structure with a center overlapping the center of the chuck 210; the open groove 201 is a rectangular open groove as shown in fig. 3 (a), or the open groove 201 is a fan-shaped open groove as shown in fig. 3 (b), and when the open groove 201 is a fan-shaped open groove, it is preferable that the fan-shaped open groove corresponds to an opening angle of 30 ° to 60 °.
Example 3:
as shown in fig. 4 and 5, the angular positioning device for a camshaft in the present embodiment includes a positioning pin 100 fixed to the camshaft 10, and a chuck positioning assembly 200 provided at an end of the camshaft 10. The chuck positioning assembly 200 includes a chuck 210, a reference positioning plate 220' disposed on the chuck 210 and abutting against the circumferential surface of the positioning pin 100, a positioning block 230 disposed at the center of the chuck 210 and abutting against the side end surface of the camshaft 10, and a clamping jaw 240 disposed on the chuck 210 and clamping the end of the camshaft 10.
The reference positioning plate 220' is a U-shaped slot plate structure with an opening facing the periphery of the chuck 210; the jacking positioning block 230 is in a conical structure or a circular truncated cone structure; the jaws 240 are uniformly arranged on the chuck 210, and the number of the jaws is two or more.
Example 4:
the angular positioning device of the camshaft in the present embodiment has the same structure as that of embodiment 3, and the main differences are as follows: the reference positioning plate 220' is a flat plate structure provided in a radial direction of the chuck 210.
The camshaft angular positioning device in embodiment 1-4, the locating hole that will fix a position with the locating pin angular is changed into plane side angular positioning, the width of open slot and the scope that the reference locating plate can not restrict the thick location of location axle, the locating pin can directly fall into the chuck, tightly hold camshaft work piece by the support of top tight locating piece, camshaft work piece is rotatory along with the chuck, guarantee that the locating pin is close to the side of open slot and reference locating plate, realize the required locating pin angular reference location of cam grinding, this angular positioning action in-process, the locating pin need not receive the influence of axial force, therefore the height of locating pin just can not change yet.
According to the technical scheme of above-mentioned embodiment, the utility model provides a camshaft angular positioning device can carry out accurate location to the camshaft angular to guarantee camshaft abrasive machining's precision.
In the description of the present invention, it is to be understood that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and do not indicate or imply that the equipment or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the present disclosure, unless otherwise expressly stated or limited, the first feature may comprise both the first and second features directly contacting each other, and also may comprise the first and second features not being directly contacting each other but being in contact with each other by means of further features between them. Also, the first feature being above, on or above the second feature includes the first feature being directly above and obliquely above the second feature, or merely means that the first feature is at a higher level than the second feature. A first feature that underlies, and underlies a second feature includes a first feature that is directly under and obliquely under a second feature, or simply means that the first feature is at a lesser level than the second feature.
While the invention has been described in conjunction with the specific embodiments set forth above, it is evident that many alternatives, modifications, and variations will be apparent to those skilled in the art in light of the foregoing description. Accordingly, it is intended to embrace all such alternatives, modifications, and variations that fall within the spirit and scope of the appended claims.
Claims (10)
1. The angular positioning device of the camshaft is characterized by comprising a positioning pin fixedly arranged on the camshaft and a chuck positioning assembly arranged at the end part of the camshaft;
the chuck positioning assembly comprises a chuck, a reference positioning block arranged in the center of the chuck, a jacking positioning block arranged in the center of the reference positioning block and abutted against the side end face of the camshaft, and a clamping jaw arranged on the chuck and used for clamping the end part of the camshaft;
and the reference positioning block is provided with an open slot which is abutted against the circumferential surface of the positioning pin and is used for positioning the angular reference of the camshaft.
2. The camshaft angular positioning device of claim 1, wherein the datum locating block is a cylindrical structure disposed coaxially with the chuck.
3. The angular positioning apparatus of claim 1, wherein the reference positioning block is a square column structure with a center overlapping the center of the chuck.
4. The camshaft angular positioning device of claim 1, wherein the open slots are rectangular open slots or fan-shaped open slots.
5. The camshaft angular positioning device of claim 4, wherein the corresponding opening angle of the fan-shaped opening slot is more than 15 °.
6. The angular positioning device for the camshaft according to claim 1, wherein the chuck positioning assembly comprises a chuck, a datum positioning plate which is arranged on the chuck and abuts against the peripheral surface of the positioning pin, a jacking positioning block which is arranged in the center of the chuck and abuts against the side end surface of the camshaft, and a clamping jaw which is arranged on the chuck and used for clamping the end part of the camshaft.
7. A camshaft angular positioning device as claimed in claim 6, wherein the datum locating plate is a U-shaped slotted plate structure opening towards the outer periphery of the chuck.
8. The angular positioning apparatus of claim 6, wherein the reference positioning plate is a flat plate structure disposed in a radial direction of the chuck.
9. The angular positioning device for the camshaft according to claim 1 or 6, wherein the jacking positioning block is in a conical structure or a circular truncated cone structure.
10. The angular positioning device of claim 1 or 6, wherein the jaws are uniformly arranged on the chuck, and the number of the jaws is two or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021886023.4U CN213470788U (en) | 2020-09-02 | 2020-09-02 | Angular positioning device for camshaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021886023.4U CN213470788U (en) | 2020-09-02 | 2020-09-02 | Angular positioning device for camshaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213470788U true CN213470788U (en) | 2021-06-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021886023.4U Active CN213470788U (en) | 2020-09-02 | 2020-09-02 | Angular positioning device for camshaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213470788U (en) |
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2020
- 2020-09-02 CN CN202021886023.4U patent/CN213470788U/en active Active
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