CN110132087B - Device and method for measuring simultaneous meshing performance of double gears - Google Patents
Device and method for measuring simultaneous meshing performance of double gears Download PDFInfo
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- CN110132087B CN110132087B CN201910358237.XA CN201910358237A CN110132087B CN 110132087 B CN110132087 B CN 110132087B CN 201910358237 A CN201910358237 A CN 201910358237A CN 110132087 B CN110132087 B CN 110132087B
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- 238000000034 method Methods 0.000 title claims abstract description 11
- 230000007246 mechanism Effects 0.000 claims abstract description 39
- 238000005259 measurement Methods 0.000 claims abstract description 29
- 238000003825 pressing Methods 0.000 claims abstract description 10
- 230000009977 dual effect Effects 0.000 claims description 33
- 238000009434 installation Methods 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 description 4
- 230000002035 prolonged effect Effects 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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- 230000007774 longterm Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/0002—Arrangements for supporting, fixing or guiding the measuring instrument or the object to be measured
- G01B5/0004—Supports
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/003—Measuring of motor parts
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/02—Gearings; Transmission mechanisms
- G01M13/021—Gearings
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Abstract
The invention discloses a device and a method for measuring simultaneous meshing performance of double gears, wherein the device comprises a positioning and pressing mechanism and a dial indicator measuring mechanism which are arranged on a base, the positioning and pressing mechanism comprises a double-gear positioning part, a positioning tooth and a positioning tooth supporting part, during measurement, a first positioning tooth is arranged on a first positioning tooth supporting part, a second positioning tooth is arranged on a second positioning tooth supporting part, the first positioning tooth is meshed with a driven gear of the double gear to be measured, the second positioning tooth is meshed with a driving gear, and the dial indicator measuring mechanism is arranged on one side of the driven gear of the double gear to be measured and is used for measuring the relative axial position difference of the three pairs of double gears for meeting simultaneous meshing. The measuring device measures the relative axial position difference of the grouped multiple double gears for meeting the requirement of simultaneous meshing assembly, and then selects a proper adjusting pad through the measured relative axial position difference, thereby eliminating the angular difference influence of the double gears and ensuring the simultaneous meshing performance of the grouped multiple double gears during working.
Description
Technical Field
The invention relates to the technical field of simultaneous meshing measurement of double gears, in particular to a simultaneous meshing measurement device of double gears. In addition, the invention also relates to a measuring method for measuring the simultaneous meshing performance of a plurality of double gears in a group by adopting the device for measuring the simultaneous meshing performance of the double gears.
Background
In the reduction gear double gear of certain type engine, contain a set of three pairs of cylinder skewed tooth double gear pairs of meshing simultaneously, it includes driving gear and driven gear, and its operating condition is: one input gear engages three driving gears simultaneously and one output gear engages three driven gears simultaneously. Because the '0' positions of two gears of the double gears have manufacturing errors, namely a certain angular difference exists, the phenomenon that the driving gear only drives one or two gears to move (the driven gear of the double gears is meshed with the input gear simultaneously, and the driving gear of the double gears has a gap with the output gear and cannot be meshed simultaneously) occurs in the actual work of the double gears, so that the simultaneous stress of the three double gears cannot be ensured, the working state of the mainly stressed double gears exceeds a design threshold, the teeth of the double gears are broken, and the fault is caused.
Disclosure of Invention
The invention provides a device and a method for measuring simultaneous meshing performance of double gears, and aims to solve the technical problems that a plurality of grouped double gears cannot be meshed simultaneously and mechanical faults are easy to occur due to angular difference of the double gears.
According to an aspect of the present invention, there is provided a dual-gear simultaneous meshing performance measuring apparatus for simultaneous meshing performance measurement of a plurality of dual gears in a set, comprising a positioning and pressing mechanism and a dial gauge measuring mechanism provided on a base, the positioning and pressing mechanism including a dual-gear positioning portion for supporting a dual gear to be measured, a positioning tooth and a positioning tooth support portion, the positioning tooth support portion including a first positioning tooth support portion and a second positioning tooth support portion, the first and second positioning tooth support portions being located on both sides of the positioning portion, respectively, the positioning tooth including a first positioning tooth mounted on the first positioning tooth support portion and arranged toward a driven gear direction of the dual gear to be measured, and a second positioning tooth mounted on the second positioning tooth support portion and arranged toward a driving gear direction of the dual gear to be measured, the first positioning tooth is used for being meshed and positioned with the driven gear of the double gear to be measured, the second positioning tooth is used for being meshed and positioned with the driving gear of the double gear to be measured, and the dial indicator measuring mechanism is arranged at the gear shaft end of one side of the driven gear of the double gear to be measured and used for respectively measuring a plurality of double gears in the same group to judge whether the requirements of the relative axial position difference of simultaneous meshing are met.
Furthermore, the double-gear positioning portion comprises a first V-shaped block and a second V-shaped block which are used for fixing the double gear to be measured, so that the double gear to be measured is kept horizontal and the position requirements of the double gear to be measured and the positioning teeth are met.
Furthermore, the positioning tooth supporting part comprises a supporting seat, wherein a sliding groove is formed in the supporting seat and used for enabling the corresponding positioning tooth to slide in the sliding groove in an oriented mode so as to facilitate the installation of the double gears to be tested in place.
Furthermore, an elastic component used for forcing the positioning teeth to move towards the direction of the double gears to be measured and a stop pin used for axially limiting the positioning teeth corresponding to the elastic component are arranged inside the sliding groove, so that the corresponding positioning teeth rebound to a correct meshing position.
Further, the non-working surface of the positioning tooth is offset towards the center, so that a gap is reserved between the positioning tooth and the double gear to be measured, and measurement is facilitated.
Furthermore, the dial indicator measuring mechanism comprises an indicator block, a straight indicator frame, a dial indicator and a fixing piece, wherein the straight indicator frame is fixed on the base, the dial indicator is fixed on the straight indicator frame through the fixing piece, and an indicator head of the dial indicator is arranged on a working end face of the indicator block and aligned with the axis of the double gears to be measured.
Further, a handle or a roller is arranged on the base, so that the double gears can be moved and the meshing performance measuring device can be simultaneously used.
According to another aspect of the present invention, a method for measuring simultaneous meshing performance of two gears by using the above-mentioned device for measuring simultaneous meshing performance of two gears includes the steps of:
s1, selecting a proper positioning tooth, wherein the positioning tooth needs to satisfy the following conditions: the tooth shape and the tooth direction of the positioning gear are completely consistent with those of a working meshing object part of the double gear to be measured, and the position of the working surface of the positioning gear is consistent with that of the working meshing object part of the double gear to be measured, so that the actual working meshing state of the double gear is consistent when the double gear and the positioning gear are meshed;
s2, installing the positioning gear, the first double gear and the dial indicator measuring mechanism in place, and ensuring that the first double gear to be measured is meshed with the first positioning gear and the second positioning gear simultaneously;
s3, reading and adjusting 0 of the dial indicator measuring mechanism;
and S4, repeating the step S2 on the rest double gears to be measured, and respectively recording the measurement data of the dial indicator measurement mechanism, wherein the measurement data are the axial position difference when the grouped multiple double gears are meshed simultaneously.
Further, the step of installing the positioning teeth, the first double gear to be measured and the dial indicator measuring mechanism in place comprises the following steps:
the '0' position tooth working face of the driven gear of the double gears is aligned and meshed with the first positioning tooth, at the moment, the tooth groove position of the driving gear of the second positioning tooth meshing double gears is determined,
the first positioning tooth and the second positioning tooth are fixed to be in a working state,
the double-gear to be measured is pushed towards the driving gear direction from the driven gear direction, the double-gear to be measured and the positioning gear are in a non-working state at the moment, the double-gear rotates back and forth until the double-gear cannot move, and then the double-gear is meshed with the first positioning gear and the second positioning gear simultaneously.
Further, whether the measured data are larger than 0.32mm or not is checked, if not, the angular difference of the two gears meets the requirement, and if so, the angular difference of the three pairs of the measured two gears does not meet the requirement;
and when the angle difference of the three pairs of double gears does not meet the requirement, further checking whether the measured data is larger than 1mm, if not, indicating that the three pairs of double gears do not meet the drawing requirement, carrying out re-matching grouping on the double gears, if so, indicating that the mark of the '0' position of the driven gear of the double gears is wrong, selecting a gear working face at the left and right of the '0' position gear of the driven gear to be meshed with the first positioning gear, and re-measuring according to the steps S2 to S4.
The invention has the following beneficial effects:
the device for measuring the simultaneous meshing performance of the double gears simulates the working condition of the double gears by utilizing the meshing of the positioning teeth and the double gears, the relative position arrangement of the first positioning teeth and the second positioning teeth and the double gears can adapt to the detection of the simultaneous meshing performance of the helical double gears, the relative axial position difference of the grouped multiple double gears for meeting the simultaneous meshing is measured by adopting the dial indicator measuring mechanism, and then the proper adjusting pad is selected through the relative axial position difference obtained by measurement, the angular difference influence of the double gears is eliminated, the simultaneous meshing performance of the three pairs of double gears during working is ensured, the abrasion degree of the single double gears is reduced, the service life of the device is prolonged, the condition that the stress of the single double gears exceeds the design threshold is eliminated, the tooth breakage accident is avoided, and the reliability of double gear transmission is improved. The measuring device adopts a dial indicator measuring mechanism for measurement, has high precision, completely meets the actual requirement of the working precision of the double gears, and can identify the incorrect grouping of the double gears and the wrong 0 position mark of the double gears.
In addition to the objects, features and advantages described above, other objects, features and advantages of the present invention are also provided. The present invention will be described in further detail below with reference to the drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic three-dimensional structure diagram of a three-pair dual-gear simultaneous meshing performance measuring apparatus according to a preferred embodiment of the present invention;
FIG. 2 is a top view of a three-pair dual-gear simultaneous meshing performance measuring apparatus according to a preferred embodiment of the present invention;
FIG. 3a is a cross-sectional view A-A of FIG. 2; FIG. 3B is a cross-sectional view B-B of FIG. 2;
FIG. 4 is an enlarged schematic view of the positioning tooth structure of FIG. 3 a;
fig. 5 is a schematic view of the structure of the dial indicator measuring mechanism in fig. 1.
Illustration of the drawings:
100. positioning a pressing mechanism; 101. a double gear positioning portion; 1011. a first V-shaped block; 1012. a second V-shaped block; 102. positioning teeth; 1021. a first positioning tooth; 1022. a second positioning tooth; 1023. a working surface; 1024. a non-working surface; 103. a positioning tooth support; 1031. a supporting seat; 1032. a chute; 1033. an elastic member; 1034. a stop pin; 1035. a stud; 1036. a nut;
200. a dial indicator measuring mechanism; 201. matching the table blocks; 202. a meter straightening frame; 203. a dial indicator; 2031. a gauge head; 204. a fixing member;
300. a base; 400. a handle; 500. a double gear; 501. a driven gear; 502. a drive gear.
Detailed Description
The embodiments of the invention will be described in detail below with reference to the accompanying drawings, but the invention can be embodied in many different forms, which are defined and covered by the following description.
FIG. 1 is a schematic three-dimensional structure of a dual-gear simultaneous meshing performance measuring apparatus according to a preferred embodiment of the present invention; fig. 2 is a plan view of a dual gear simultaneous meshing performance measuring apparatus according to a preferred embodiment of the present invention.
As shown in fig. 1 and fig. 2, the dual-gear simultaneous meshing performance measuring apparatus of the present embodiment is used for simultaneous meshing performance measurement of a plurality of dual gears in a group, and includes a positioning and pressing mechanism 100 and a dial indicator measuring mechanism 200 that are disposed on a base 300, the positioning and pressing mechanism 100 includes a dual-gear positioning portion 101 for supporting a dual gear to be measured, a positioning tooth 102 and a positioning tooth support portion 103, the positioning tooth support portion 103 includes a first positioning tooth support portion and a second positioning tooth support portion, the first positioning tooth support portion and the second positioning tooth support portion are respectively located at two sides of the dual-gear positioning portion 101, the positioning tooth 102 includes a first positioning tooth 1021 and a second positioning tooth 1022, the first positioning tooth 1021 is installed on the first positioning tooth support portion and is arranged toward a driven gear direction of the dual gear to be measured, the second positioning tooth 1022 is installed on the second positioning tooth support portion and is arranged toward a driving gear direction of the dual gear to be measured, the first positioning tooth 1021 is used for being positioned in a meshed mode with a driven gear of the double gear to be measured, the second positioning tooth 1022 is used for being positioned in a meshed mode with a driving gear of the double gear to be measured, and the dial indicator measuring mechanism 200 is arranged at a gear shaft end of one side, where the driven gear of the double gear to be measured is located, and used for respectively measuring a plurality of double gears in the same group to judge whether the requirement of the relative axial position difference of simultaneous meshing is met.
The inventor finds out in the long-term practice that: the '0' position of the double gears has angular phase difference, and if a plurality of grouped double gears are simultaneously meshed with the input gear and the output gear, the meshing positions of the double gears have axial position difference, and the axial position difference of the double gears with the same angular phase difference which are simultaneously meshed is the same. The maximum difference of the 0 bit angles of the driven gears of the two pairs of double gears in one group of double gear pairs is 1.13', and if the three pairs of double gears are meshed simultaneously, the maximum difference of the axial positions of the double gears cannot exceed 0.32 mm. The device for measuring the simultaneous meshing performance of the double gears simulates the actual working meshing condition of the double gears by meshing the two positioning teeth with the double gears, wherein the positioning and pressing mechanism can ensure that the double gears to be measured, the first positioning tooth and the second positioning tooth are in correct meshing positions, and the probability of deviation caused by unstable meshing positions and the actual working meshing condition in the measuring process is reduced; the relative position arrangement of the first positioning gear and the second positioning gear with the double gears can adapt to the simultaneous meshing detection of the dual gears with the helical gears; the dial indicator measuring mechanism is adopted to measure the relative axial position difference of the three pairs of double gears for meeting the requirement of simultaneous meshing assembly, and then the relative axial position difference obtained by measurement can be measured, a proper adjusting pad is selected, the angular difference influence of the double gears is eliminated, the simultaneous meshing performance of the three pairs of double gears during working is ensured, the abrasion degree of a single double gear is reduced, the service life of the double gear transmission device is prolonged, the condition that the stress of the single double gear exceeds a design threshold value is eliminated, the tooth breakage accident is avoided, and the reliability of double gear transmission is improved.
In this embodiment, the dual-gear positioning portion 101 includes a first V-shaped block 1011 and a second V-shaped block 1012 for fixing the dual gear to be tested, so that the dual gear to be tested is kept horizontal and the position requirement of the dual gear to be tested and the positioning teeth 102 is met. One side of the V-shaped block is fixed to the base 300 by screws and nuts, the other side serves as a supporting portion of the double gear axis, and the V-shaped block is preferably a right-angle V-shaped block. As shown in fig. 4, the first V-shaped block 1011 is used for being supported on a shaft neck at one end of the double gear to be measured, which is close to the driving gear; the second V-shaped block is used for being supported on a middle shaft sleeve (or a middle gear shaft) between the driving gear and the driven gear on the double gear to be measured from the bottom. Optionally, a plurality of mounting holes are formed in the base 300 along the mounting direction of the first V-shaped block 1011 and the second V-shaped block 1012, the first V-shaped block 1011 and the second V-shaped block 1012 are fixed to the base 300 through screws and nuts, and during measurement, the mounting positions of the first V-shaped block 1011 and the second V-shaped block 1012 are selected according to the axial size of the double gear to be measured, so that the simultaneous meshing performance measuring device of the double gear is suitable for double gears of different models.
In this embodiment, as shown in fig. 3a to 3b, the first positioning tooth support portion and the second positioning tooth support portion have the same structure, and the positioning tooth support portion 103 includes a support seat 1031, and a sliding slot 1032 is provided on the support seat 1031, so that the corresponding positioning tooth 102 slides in the sliding slot 1032 in an oriented manner to facilitate the installation of the dual gear to be tested in place. The positioning teeth 102 are mounted in the sliding groove 1032 and can slide along the length direction of the sliding groove 1032, and when the to-be-tested double gear is mounted to the double-gear positioning portion, the positioning teeth 102 slide along the direction of the sliding groove 1032 away from the double-gear positioning portion, so that enough space is reserved for mounting and fixing the double gear. Optionally, a plurality of mounting holes are formed in the base 300 along the mounting direction of the supporting seat 1031, the supporting seat 1031 is fixed to the base 300 by screws and nuts, and during measurement, the mounting position of the supporting seat 1031 is selected according to the positions of the driving gear and the driven gear of the dual gear to be measured, so that the first positioning teeth 1021 and the second positioning teeth 1022 meet the position requirement of meshing with the driving gear and the driven gear of the dual gear.
In this embodiment, an elastic component 1033 for forcing the positioning teeth 102 to move toward the dual gear to be measured and a stop pin 1034 for axially limiting the positioning teeth 102 corresponding to the elastic component 1033 are disposed inside the sliding groove 1032, so that the corresponding positioning teeth 102 rebound to the correct meshing position.
The elastic component 1033 is stretched when the positioning tooth 102 slides along the sliding groove 1032, the elastic force of the elastic component 1033 urges the positioning tooth 102 to reset, the stop pin 1034 abuts against the outer side of the supporting seat 1031, the end point of the resetting of the positioning tooth is defined, and the length from the stop pin 1034 to the working surface of the positioning tooth is the actual meshing size of the part. When the double-gear to be tested is installed to the double-gear positioning portion, the positioning teeth slide in the opposite direction of the meshing working face to leave a larger gap, so that the double-gear to be tested can be conveniently placed into the double-gear positioning portion, the meshing positions of the driving gear and the driven gear of the double-gear and the first positioning teeth correspond to each other, after the driving face of the driven gear of the double-gear to be tested is meshed with the first positioning teeth, the meshing tooth grooves of the second positioning teeth and the driving gear of the double-gear are uniquely determined, the meshing positions of the double-gear and the two positioning teeth are all in correct positions, the double-gear rotates forwards and backwards slightly, and the first positioning teeth and the second positioning teeth can enable the first positioning teeth and the second positioning teeth to be finely adjusted under the elastic adjustment of the elastic component, so that the first positioning teeth and the second positioning teeth are in correct meshing positions. Preferably, the elastic member 1033 is a spring. After the positioning teeth 102 are in place, they are secured to the support base 1031 by means of studs 1035 and nuts 1036.
In this embodiment, as shown in fig. 3a-3b and fig. 4, the non-working surface 1024 of the positioning gear 102 is shifted toward the center, so that a gap is left between the positioning gear 102 and the dual gear to be measured for measurement. The positioning tooth 102 needs to be measured in engagement with a set of multiple double gears, both flanks of the positioning tooth are in contact engagement with the flanks of the double gears, whereas for multiple double gears with angular phase difference, it is difficult for the positioning tooth to simultaneously engage both flanks of each double gear, on the basis of which one of the faces of the positioning tooth is ensured to be in contact with the flanks of the double gears, this face being defined as the running face 1023 of the positioning tooth, while the other face of the positioning tooth, opposite the running face 1023, is defined as the non-running face 1024, the non-running face 1024 of the positioning tooth 102 is freed from part of the material to form a centripetally offset (i.e. offset to the inside of the non-running face), as shown in fig. 4, the dotted line is the contour position in which the non-running face 1024 is not offset, the solid line is the contour position after the non-running face 1024 is offset to the centre, the non-running face 1024 of the positioning tooth 102 is offset to the centre, leaving a gap, thus, the positioning teeth 102 can engage with both gears having different angular differences. When the double gears do not contact the gear faces of the working faces, the double gears are slightly rotated back and forth in the circumferential direction and can move in the spiral direction (namely the direction of the dial indicator) until the working faces of the two positioning teeth are completely meshed with the double gears, and at the moment, the dial indicator is subjected to 0 adjustment operation or reading. The first positioning tooth 1021 and the second positioning tooth 1022 work on the same principle, and are both applicable to the structural arrangement that the non-working surface is offset towards the center.
In this embodiment, as shown in fig. 5, the dial indicator measuring mechanism 200 includes a counter block 201, a straight rack 202, a dial indicator 203, and a fixing member 204, the straight rack 202 is fixed on the base 300, during measurement, the dial indicator 203 is fixed on the straight rack 202 by the fixing member 204, and a head 2031 of the dial indicator 203 is hit on a working end surface of the counter block 201 and aligned with an axis of the dual gear to be measured. The dial gauge 203 is placed in the straight gauge frame 202 and is screwed down through the fixing piece 204, the fixing piece 204 is preferably a knurled screw, so that the dial gauge 203 and the straight gauge frame 202 are rigidly fixed, and the measurement accuracy is ensured. The gauge outfit is beaten and is being played the gauge outfit terminal surface, and gauge outfit axial and double gear axial alignment avoid the gauge outfit to receive the shearing force to arouse when measuring to rock and the measuring error who arouses.
In this embodiment, as shown in fig. 1, a handle 400 is provided on the base 300 to facilitate the operator to carry the three pairs of dual gears simultaneously with the meshing performance measuring apparatus. In other embodiments, a roller may be installed on the base 300, and three pairs of dual gears may be moved by rolling the roller while the meshing performance measuring apparatus is engaged.
According to another aspect of the present invention, there is provided a method for measuring simultaneous meshing performance of two gears, using the above-described device for measuring simultaneous meshing performance of two gears, comprising the steps of:
s1, selecting a proper positioning tooth 102, wherein the positioning tooth 102 needs to satisfy the following conditions: the tooth shape and the tooth direction of the double-gear meshing device are completely consistent with those of a working meshing object part of the double-gear to be measured, and the positions of the working surface of the positioning gear 102 and the working surface of the working meshing object part of the double-gear to be measured are consistent, so that the meshing state of the double-gear and the actual working meshing state of the double-gear are consistent when the double-gear is meshed with the positioning gear 102;
s2, installing the positioning tooth 102, the first double gear and the dial indicator measuring mechanism 200 in place, and ensuring that the first double gear to be measured is meshed with the first positioning tooth 1021 and the second positioning tooth 1022 simultaneously;
installing the positioning teeth 102, the first dual gear to be measured and the dial indicator measuring mechanism 200 in place comprises the steps of:
the working surface of the '0' position tooth of the driven gear of the double gears is aligned and meshed with the first positioning tooth 1021, at the moment, the tooth position of the driving gear of the double gears meshed with the second positioning tooth 1022 is determined,
the first positioning tooth 1021 and the second positioning tooth 1022 are fixed to be in an operating state,
the double gears to be measured are pushed to the driving gear direction from the driven gear direction, at the moment, the double gears to be measured and the positioning teeth are in a non-working state, the double gears are rotated back and forth until the double gears cannot move, and then the double gears are meshed with the first positioning teeth 1021 and the second positioning teeth 1022 simultaneously;
s3, reading and adjusting 0 of the dial indicator measuring mechanism 200;
and S4, repeating the step S2 on the rest double gears to be measured, and respectively recording the measurement data of the dial indicator measurement mechanism 200, wherein the measurement data are the axial position difference when the grouped multiple double gears are meshed simultaneously.
The '0' position of the double gears has angular difference, and if three pairs of double gears are meshed with the input gear and the output gear simultaneously, the meshing positions of the double gears have axial position difference, and the axial position difference of the double gears with the same angular difference which are meshed simultaneously is the same. The difference of the ' 0 ' phase angle of the driven gears of the two pairs of double gears in one group of double gear pairs is maximally 1.13 ', and if the three pairs of double gears are meshed simultaneously, the axial position difference of the double gears cannot exceed 0.32 mm. The first double gear to be measured is used for adjusting the measuring reference, so that the dial indicator measuring mechanism is in a 0 position. If the measurement data of the remaining dual gears to be tested in the step S4 is not greater than 0.32mm, it indicates that the input gear and the output gear can be simultaneously engaged when the three pairs of dual gears are in active engagement.
In the embodiment, whether the measurement data is larger than 0.32mm or not is checked, if not, the angular difference of the double gears meets the requirement, the group of the multiple double gears can be meshed simultaneously, and if so, the measured angular differences of the three pairs of the double gears do not meet the requirement;
if the angle difference between the three pairs of double gears does not meet the requirement, whether the measured data is larger than 1mm or not needs to be further checked, and the following two conditions exist:
a) if the measured data is larger than 0.32mm but smaller than 1mm, the three pairs of double gears do not meet the requirement of a drawing, and the double gears need to be re-matched and grouped;
b) and if the measured data is larger than 1mm, indicating that the mark of the '0' bit of the driven gear of the double gears is wrong, selecting the working faces of the left and the right teeth of the '0' bit of the driven gear to be meshed with the first positioning tooth, and re-measuring according to the steps S2 to S4. If the measured data are found to be less than 0.32mm by re-measurement, the mark error of the '0' bit tooth of the driven gear of the double gears is proved.
Through the simultaneous meshing nature measuring device of this embodiment carries out the poor measurement of axial position to a set of a plurality of double gears, can judge directly perceivedly whether a plurality of double gears measured can mesh input gear and output gear simultaneously when actually working according to measured data, if can not mesh simultaneously, can select suitable adjustment pad according to measured data, eliminate the angle phase difference influence of double gear, thereby guarantee a plurality of double gear simultaneous meshing of during operation, it has reduced single degree of wear to the double gear, the life has been prolonged, the condition that single double gear atress exceeds the design threshold has been eliminated, the tooth rupture accident that probably leads to when having avoided not meshing simultaneously, double gear transmission's reliability has been improved. On the other hand, the simultaneous meshing performance measuring device of the dual gears of the present embodiment measures the axial position difference of a group of multiple dual gears, and can identify the incorrect grouping of the dual gears and the incorrect marking of the teeth of the "0" position of the dual gears.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. A device for measuring the simultaneous meshing performance of two gears is used for measuring the simultaneous meshing performance of a plurality of double gears in a group,
comprises a positioning and pressing mechanism (100) arranged on a base (300) and a dial indicator measuring mechanism (200),
the positioning and pressing mechanism (100) comprises a double-gear positioning part (101) for supporting a double gear to be tested, a positioning tooth (102) and a positioning tooth supporting part (103), wherein the positioning tooth (102) is meshed with the double gear to simulate the working condition of the double gear, the positioning tooth supporting part (103) comprises a first positioning tooth supporting part and a second positioning tooth supporting part, the first positioning tooth supporting part and the second positioning tooth supporting part are respectively positioned at two sides of the double-gear positioning part (101), the positioning tooth (102) comprises a first positioning tooth (1021) and a second positioning tooth (1022), the first positioning tooth (1021) is installed on the first positioning tooth supporting part and is distributed towards the driven gear direction of the double gear to be tested, the second positioning tooth (1022) is installed on the second positioning tooth supporting part and is distributed towards the driving gear direction of the double gear to be tested, and the first positioning tooth (1021) is used for being meshed with the driven gear of the double gear to be tested, the second positioning teeth (1022) are used for being meshed with the driving gear of the double gear to be tested for positioning,
the positioning tooth support part (103) comprises a support seat (1031), a sliding groove (1032) is formed in the support seat (1031) and used for enabling the corresponding positioning tooth (102) to slide in the sliding groove (1032) in an oriented mode so as to facilitate the installation of the double gears to be tested in place, an elastic component (1033) used for forcing the positioning tooth (102) to move towards the direction of the double gears to be tested and a stop pin (1034) used for axially limiting the positioning tooth (102) corresponding to the elastic component (1033) are arranged in the sliding groove (1032), and therefore the corresponding positioning tooth (102) can rebound to a correct meshing position;
the non-working surface of the positioning gear (102) is offset towards the center, so that a gap is reserved between the positioning gear (102) and the double gear to be measured for measurement;
the dial indicator measuring mechanism (200) is arranged at the gear shaft end of one side where the driven gear of the double gears to be measured is located and used for respectively measuring the multiple double gears in the same group so as to judge whether the requirement of the relative axial position difference of simultaneous meshing is met.
2. A dual gear simultaneous meshing performance measuring apparatus according to claim 1,
the double-gear positioning part (101) comprises a first V-shaped block (1011) and a second V-shaped block (1012) which are used for fixing the double gear to be measured, so that the double gear to be measured is kept horizontal and the position requirement of the double gear to be measured and the positioning gear (102) is met.
3. A dual gear simultaneous meshing performance measuring apparatus according to claim 1,
the dial indicator measuring mechanism (200) comprises an indicator block (201), a straight indicator frame (202), a dial indicator (203) and a fixing piece (204), the straight indicator frame (202) is fixed on a base (300), the dial indicator (203) is fixed on the straight indicator frame (202) through the fixing piece (204), and the indicator head of the dial indicator (203) is arranged on the working end face of the indicator block (201) and aligned with the axis of the double gears to be measured.
4. A dual gear simultaneous meshing performance measuring apparatus according to any one of claims 1 to 3,
a handle (400) or a roller is arranged on the base (300) so as to move the double gears and simultaneously measure the meshing performance.
5. A method for measuring simultaneous engageability of two gears using the device for testing simultaneous engageability of two gears according to any one of claims 1 to 4, comprising the steps of:
s1, selecting a proper positioning tooth (102), wherein the positioning tooth (102) needs to satisfy the following conditions: the tooth shape and the tooth direction of the double-gear meshing device are completely consistent with those of a working meshing object part of the double-gear to be measured, and the positions of the working surface of the positioning gear (102) and the working surface of the working meshing object part of the double-gear to be measured are consistent, so that the meshing state of the double-gear and the positioning gear (102) is consistent with the actual working meshing state of the double-gear when meshed;
s2, installing the positioning tooth (102), the first double gear and the dial indicator measuring mechanism (200) in place, and ensuring that the first double gear to be measured is meshed with the first positioning tooth (1021) and the second positioning tooth (1022) simultaneously;
s3, adjusting the reading of the dial indicator measuring mechanism (200) to 0;
s4, repeating the step S2 on the rest double gears to be measured, and respectively recording the measurement data of the dial indicator measurement mechanism (200), wherein the measurement data are the axial position difference when the grouped double gears are meshed simultaneously.
6. A dual gear simultaneous meshing performance measuring method according to claim 5,
the step of installing the positioning teeth (102), the first double gear to be measured and the dial indicator measuring mechanism (200) in place comprises the following steps:
the '0' position tooth working surface of the driven gear of the double gears is aligned and meshed with the first positioning tooth (1021), the tooth position of the driving gear of the second positioning tooth (1022) meshed with the double gears is determined at the moment,
the first positioning tooth (1021) and the second positioning tooth (1022) are fixed to be in an operating state,
the double gears to be measured are pushed towards the driving gear direction from the driven gear direction, the double gears to be measured and the positioning teeth are in a non-working state at the moment, the double gears are rotated back and forth until the double gears cannot move, and then the double gears are meshed with the first positioning teeth (1021) and the second positioning teeth (1022) simultaneously.
7. A dual gear simultaneous meshing performance measuring method according to claim 6,
checking whether the measurement data are larger than 0.32mm or not, if not, indicating that the angular difference of the two gears meets the requirement, and if so, indicating that the angular differences of the three pairs of the measured two gears do not meet the requirement;
and when the angle difference of the three pairs of double gears does not meet the requirement, further checking whether the measured data is larger than 1mm, if not, indicating that the three pairs of double gears do not meet the drawing requirement, carrying out re-matching grouping on the double gears, if so, indicating that the mark of the '0' position of the driven gear of the double gears is wrong, selecting a gear working face at the left and right of the '0' position gear of the driven gear to be meshed with the first positioning gear, and re-measuring according to the steps S2 to S4.
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| CN115014754B (en) * | 2022-06-01 | 2023-07-04 | 中南大学 | Detection device and detection method for angular error consistency of duplex gears |
| CN119509430A (en) * | 2024-10-22 | 2025-02-25 | 中国航发南方工业有限公司 | A device for measuring the axial correction value of intermediate double gears, a measuring method and a group matching method |
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