CN112051054B - Gear positioning device, gear measuring device and measuring method - Google Patents
Gear positioning device, gear measuring device and measuring method Download PDFInfo
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- CN112051054B CN112051054B CN202010867617.9A CN202010867617A CN112051054B CN 112051054 B CN112051054 B CN 112051054B CN 202010867617 A CN202010867617 A CN 202010867617A CN 112051054 B CN112051054 B CN 112051054B
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- 230000003746 surface roughness Effects 0.000 claims description 25
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- 238000000691 measurement method Methods 0.000 claims description 3
- 125000006850 spacer group Chemical group 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 238000001514 detection method Methods 0.000 abstract description 15
- 238000005259 measurement Methods 0.000 description 11
- 241001422033 Thestylus Species 0.000 description 4
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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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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/20—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring contours or curvatures, e.g. determining profile
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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
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/30—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring roughness or irregularity of surfaces
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Abstract
The invention discloses a gear positioning device, a gear measuring device and a gear measuring method, relates to the technical field of detection of motor vehicle gears, and solves the technical problems of how to position and install gears and how to detect odd gear teeth and even gear teeth without replacing a positioning clamp. The device comprises a positioning shaft for fixing a gear to be measured, wherein an alignment ball is arranged on the positioning shaft; one side of the gear to be detected is provided with a positioning column; and a locking pin is arranged on the positioning column, a wheel tooth tenon is arranged on the locking pin, and a wheel tooth eye is arranged on the wheel tooth tenon. The gear to be tested is fixed by the positioning shaft, and is prevented from rotating by the locking pin on the positioning column, so that the problem of positioning and mounting the gear to be tested is solved. When the number of the gear teeth of the gear to be tested is odd, the gear to be tested can be locked by inserting the gear tooth tenons into the gear tooth grooves; when the number of teeth of a cogwheel of gear that awaits measuring is the even number, also can lock the gear that awaits measuring on the teeth of a cogwheel through teeth of a cogwheel eye joint to satisfy the detection requirement of odd number teeth of a cogwheel and even number teeth of a cogwheel.
Description
Technical Field
The invention relates to the technical field of detection of motor vehicle gears, in particular to a gear positioning device, a gear measuring device and a gear measuring method.
Background
From the construction of the electric vehicle, the operation efficiency of the motor is particularly important, and the design of the multi-gear transmission is an important factor for ensuring the operation efficiency of the motor. The transmission ratio of the multi-gear transmission and the gear shifting strategy are combined with each other, so that the motor efficiency of the electric vehicle can be greatly improved, and the advantages of high running, long mileage, low loss, low waste and the like are achieved.
The synchronizer is a complex and key part in the transmission, the gear sleeve and the combined teeth are complex and key parts in the synchronizer, and the back taper and plum blossom angle process is a complex and key process procedure of the gear sleeve. The synchronizer is continuously developing towards more precise direction in the aspects of design and processing detection, and the detection precision of the gear sleeve plum-blossom-shaped angle determines the finished product precision of parts. In the prior art, most automobile enterprises detect the plum-blossom angles or the inverted cones of the gear sleeves and the combined teeth through a surface roughness profile gauge or a digital display dial indicator, but the number of the gear teeth of the gear sleeves or the combined teeth is odd or even. Different positioning fixtures need to be adopted to the gears of different teeth of a cogwheel quantity, and frequent change positioning fixture leads to the detection work efficiency of synchronous ware to be lower. Furthermore, for different positioning jigs, when detecting the teeth of the gear, it is first necessary to determine a measurement reference point. However, in the prior art, the detection of the gear is mostly performed by manually selecting the measurement reference point, which causes a large error of the detection result and is not beneficial to improving the detection precision of the gear.
Disclosure of Invention
In view of the above, the present invention is directed to overcome the deficiencies of the prior art, and in a first aspect, a gear positioning device is provided to solve the technical problems of how to position and mount a gear and how to detect odd-numbered gear teeth and even-numbered gear teeth without replacing a positioning fixture.
The technical scheme adopted by the invention for solving the technical problem is as follows:
a gear positioning device for positioning a gear under test, comprising:
the gear to be measured is sleeved on the positioning shaft in an externally sleeved mode, and an alignment ball used for determining a measurement center is arranged at the top of the positioning shaft;
the positioning column is arranged on one side of the gear to be detected; and the number of the first and second groups,
the locking pin is arranged on the positioning column and is positioned on one side of the gear tooth of the gear to be tested;
the locking pin is provided with a gear tooth tenon matched with the gear tooth groove of the gear to be detected, and the gear tooth tenon is provided with a gear tooth eye matched with the gear tooth groove of the gear to be detected, so that the locking pin is selectively inserted into the gear tooth groove or is clamped on the gear tooth.
On the basis of the technical scheme, the gear positioning device can be further improved as follows.
Optionally, a locking groove is formed in the positioning column, the locking pin is installed in the locking groove, an elastic piece is installed between the positioning column and the locking pin, and the elastic piece pushes the locking pin in the gear tooth groove or on the gear tooth.
Optionally, the tail of the locking pin is provided with a limiting part, and the locking pin penetrates through the positioning column and then is installed in the locking groove in a limiting mode through the limiting part.
Optionally, the positioning shaft is sleeved with a bushing matched with the inner diameter of the gear to be tested, a gasket is sleeved outside the bushing, and the gasket enables the gear teeth of the gear to be tested to be located at the position of the locking pin.
Optionally, the positioning shaft is further externally sleeved with a pressing sheet, and the pressing sheet presses the gear to be tested on the gasket along the axial direction of the positioning shaft.
Optionally, the positioning shaft and the positioning column are both connected with a base, and the base is further provided with a connecting hole for connecting with a workbench of the surface roughness profiler.
In a second aspect, the invention further provides a gear measuring device, which includes a surface roughness profiler and the above-mentioned gear positioning device, the gear positioning device is installed on a workbench of the surface roughness profiler, and the measurement on the surface roughness profiler is used for measuring the gear to be measured.
In a third aspect, the present invention further provides a gear measuring method using the above gear measuring apparatus, including the steps of:
s1, determining the transmission direction of a workbench of the surface roughness profiler to be Y direction, determining the axial direction of the positioning shaft to be Z direction, and determining the directions respectively vertical to the Y direction and the Z direction to be X direction;
s2, fixing the gear to be detected on the positioning shaft, locking the gear to be detected through the locking pin, and fixing the gear positioning device on the workbench;
s3, determining the position of the center of the alignment ball in the Z-direction extension line through a measuring pin of the surface roughness profiler;
and S4, the gear to be measured moves along the Y direction along with the workbench, and when the gear teeth of the gear to be measured move to the position of the measuring needle, the measuring needle moves upwards in the X direction and the Z direction to measure the profile curve of the gear to be measured.
On the basis of the technical scheme, the gear measuring method can be further improved as follows.
Optionally, the step S3 includes the following steps:
s31, drawing three curves on the alignment ball along the X direction by the measuring needle;
s32, respectively measuring the highest points of the three curves to be A, B, C through the measuring needle;
s33, determining a circular section on the alignment ball through the A, B, C three points, wherein the intersection line of the circular section and the alignment ball is a curve S;
and S34, measuring the highest point of the curve S through the measuring needle.
Optionally, in step S2:
when the number of the gear teeth of the gear to be tested is odd, the locking pin is rotated and is inserted into the gear tooth groove of the gear to be tested through the gear tooth tenon; or,
when the teeth of a cogwheel quantity of gear that awaits measuring is the even number, rotate the lock pin, through teeth of a cogwheel eye joint is in on the teeth of a cogwheel of gear that awaits measuring.
Compared with the prior art, the gear positioning device provided by the invention has the beneficial effects that:
1. the gear to be tested is fixed by the positioning shaft, and is prevented from rotating by the locking pin on the positioning column, so that the problem of positioning and mounting the gear to be tested is solved. When the number of the gear teeth of the gear to be tested is odd, the gear to be tested can be locked by inserting the gear tooth tenons into the gear tooth grooves; when the number of teeth of a cogwheel of gear that awaits measuring is the even number, can lock the gear that awaits measuring equally on the teeth of a cogwheel through teeth of a cogwheel eye joint to satisfy the detection requirement of odd number teeth of a cogwheel and even number teeth of a cogwheel. Meanwhile, the locking pin can rotate at any angle to adapt to gear teeth with different inclination angles, so that the application range is wide, the operation is simple and convenient, and the working efficiency of synchronizer detection can be improved;
2. according to the invention, the sphere center position of the alignment sphere is determined through the measuring pin, the extension line of the sphere center in the Z direction is used as the measuring reference line of the gear tooth detection of the gear, and the back taper or plum blossom angle parameters of the gear sleeve and the combined tooth can be detected by detecting the coordinates of each structural surface of the gear tooth relative to the sphere center, so that the detection step of manually selecting a measuring reference point is avoided, and the gear detection precision is improved. Meanwhile, the automatic positioning and automatic measurement of the gear to be measured can be realized by matching with the action of the computer controlled surface roughness profiler.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is an exploded view of the gear positioning device of the present invention;
FIG. 2 is a schematic view of the assembly of the gear positioning device of the present invention;
FIG. 3 is a schematic structural diagram of the gear measuring device of the present invention for measuring a gear to be measured;
FIG. 4 is another schematic structural diagram of the gear measuring device of the present invention for measuring a gear to be measured;
FIG. 5 is a schematic view of another structure of the gear measuring device of the present invention for measuring a gear to be measured;
FIG. 6 is a perspective view of the locking pin of FIG. 1;
FIG. 7 is a schematic structural view of the locking pin of FIG. 3 locked with the gear to be tested;
FIG. 8 is a schematic structural diagram of a probe arbitrarily drawing three curves on an alignment ball;
FIG. 9 is a schematic diagram of a structure for determining a measurement center by three highest points;
FIG. 10 is a flow chart of a gear measurement method of the present invention.
In the figure:
1-gear to be tested; 2-positioning the shaft; 21-aligning the ball; 3-a positioning column; 31-a locking groove; 4-locking pin; 41-wheel tooth tenon; 42-gear eye; 43-a stop; 5, an elastic piece; 6, lining; 7, a gasket; 8, a base; 81-connecting hole; 9-measuring the needle.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely a few embodiments of the invention and are not to be taken as a comprehensive embodiment. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
Example 1:
the invention provides a gear positioning device, which comprises a positioning shaft 2, a positioning column 3 and a locking pin 4, as shown in figures 1 to 7. The shaft hole of the gear 1 to be measured is sleeved on the positioning shaft 2, so that the gear 1 to be measured is fixed on a plane. According to the size of the shaft hole of the gear 1 to be measured, the bushing 6 with the adaptive size can be selected to be sleeved on the positioning shaft 2, so that the gear 1 to be measured is stably fixed. The top of the positioning shaft 2 is provided with an alignment ball 21 with a hemispherical structure, and the center of the alignment ball 21 is located on the axis of the positioning shaft 2, so that the measuring center of the tooth to be measured 1 can be conveniently determined.
As shown in fig. 1 to 7, the positioning column 3 is disposed on one side of the gear 1 to be measured, the positioning column 3 is provided with a locking groove 31, and the locking pin 4 is installed in the locking groove 31. As shown in fig. 6, in particular, the head of the locking pin 4 is a cogged tenon 41 with a wedge-shaped structure, and the cogged tenon 41 can be inserted into a cogged groove of the gear 1 to be tested. Meanwhile, a V-shaped gear tooth eye 42 is arranged on the gear tooth tenon 41, and the gear tooth eye 42 can be clamped on the gear tooth of the gear 1 to be measured.
When the number of the gear teeth of the gear 1 to be tested is odd, the gear 1 to be tested can be locked by inserting the gear tooth tenon 41 into the gear tooth groove. When the number of teeth of a cogwheel of gear 1 that awaits measuring is the even number, then rotate locking pin 4, can lock gear 1 that awaits measuring equally on the teeth of a cogwheel through teeth of a cogwheel eye 42 joint, guaranteed that gear 1 that awaits measuring is the teeth of a cogwheel rather than the wheel tooth's socket on the extending direction of locking pin 4 to make things convenient for the measurement of gear 1 that awaits measuring.
The locking pin 4 of the present invention is designed to accommodate both odd and even gear tooth measurements. Meanwhile, when the gear teeth of the gear 1 to be measured are helical teeth, the locking pin 4 of the present invention can be adapted to the fixation of gear teeth with different inclination angles by rotating at any angle, and is also applicable to helical teeth of odd-numbered gear teeth or even-numbered gear teeth.
As shown in fig. 7, an elastic member 5 is installed between the positioning column 3 and the locking pin 4, and the elastic member 5 may be a spring, a disc spring, or a spring plate, so that the locking pin 4 pushes against a gear tooth groove or a gear tooth of the gear 1 to be measured under the elastic action of the elastic member 5. A limiting part 43 is arranged at the tail part of the locking pin 4, the limiting part 43 can be a stop lever or a baffle plate, and the locking pin 4 penetrates through the positioning column 3 and then is installed in the locking groove 31 in a limiting way through the limiting part 43. Of course, depending on the design of the locking bolt 4, the locking groove 31 can be designed as a blind hole or as a through hole.
As shown in fig. 1 to 5, the bushing 6 is further sleeved with a gasket 7, and the gear 1 to be measured is sleeved on the positioning shaft 2 and then is located above the gasket 7. The gasket 7 can enable the gear teeth of the gear 1 to be detected to be located at the position of the extension line of the locking pin 4, so that the locking pin 4 pushes the gear teeth of the gear 1 to be detected. In particular, a pressing sheet (not shown in the figure) is further disposed on the top of the gear 1 to be measured, and the pressing sheet is transitionally connected to the positioning shaft 2, so that the gear 1 to be measured can be pressed on the gasket 7 along the axial direction of the positioning shaft 2. Of course, a greater number of shims 7 can be selected, depending on the different thicknesses of the different gears.
As shown in fig. 1 to 5, a base 8 is provided at the bottom of the positioning shaft 2 and the positioning column 3, and the base 8 has a disk-shaped structure. The positioning shaft 2 is positioned in the center of the base 8, and the positioning column 3 is positioned at the edge of the base 8. The base 8 is further provided with a connecting hole 81, so that the gear positioning device can be installed on a workbench of the surface roughness profiler after penetrating through the connecting hole 81 through a bolt. Of course, the positioning shaft 2 and the positioning column 3 may be connected to the table of the surface roughness profiler, respectively.
It can be understood that different sizes of gears 1 to be tested can be installed in the same gear positioning device by selecting different sizes and numbers of bushings 6 and spacers 7 according to different sizes of gears. Through the structural design, the invention can position and install the gear teeth with different tooth numbers and different inclination angles and the gears to be measured 1 with different sizes, and has the advantages of wide application range and simple and convenient operation.
Example 2:
the invention also provides a gear measuring device, as shown in fig. 3 to 5, comprising a surface roughness profiler and the gear positioning device. The surface roughness profilometer is provided with a workbench and a measuring needle 9. The gear positioning device is arranged on the workbench through a connecting hole 81 on the base 8, and a measuring needle 9 on the surface roughness profiler measures the gear 1 to be measured.
The measuring needle 9 is contacted with the gear teeth of the gear 1 to be measured and transmits contact information to a sensing part on a surface roughness profiler host. During the measurement process, the measuring needle 9 slides at a constant speed relative to the surface of the gear teeth of the gear 1 to be measured so as to sense the geometric change of the measured surface. The surface roughness profilometer host converts the information sampled by the probe 9 into an electrical signal, which is amplified and processed to a digital signal that is stored in the memory of the computer system.
And the computer system performs digital filtering on the surface information of the gear 1 to be measured, and then performs calculation after separating the surface roughness component of the gear 1 to be measured. The measurement result is a calculated actual value conforming to a certain curve and a coordinate value from the measurement center, or an enlarged actual profile curve. The final measurement result is output through a display or a printer. In general, the stylus 9 is moved along the axial direction of the positioning shaft 2 and in a direction perpendicular to the movement direction of the table for sampling.
Example 3:
the invention also provides a gear measuring method, as shown in fig. 1 to 10, using the gear measuring device. Firstly, the transmission direction of a workbench of the surface roughness profilometer is determined to be Y direction, the axial direction of the positioning shaft 2 is determined to be Z direction, and the directions respectively vertical to the Y direction and the Z direction are determined to be X direction, namely, a three-dimensional space coordinate system related to XYZ is established.
Then, the gear 1 to be measured is positioned and mounted on the positioning shaft 2. At this time, the gear 1 to be measured can be fixed by selecting the number and size of the bushings 6, the spacers 7, and the pressing pieces according to the specification of the gear 1 to be measured. When the number of the gear teeth of the gear 1 to be measured is odd, the locking pin 4 is rotated and inserted into the gear tooth groove of the gear 1 to be measured through the gear tooth tenon 41 to lock the gear 1 to be measured. Or, when the number of the gear teeth of the gear 1 to be measured is an even number, the locking pin 4 is rotated and is clamped on the gear teeth of the gear 1 to be measured through the gear tooth eye 42 to lock the gear 1 to be measured. The gear positioning device is fixed on the workbench through the connecting hole 81, and the extension direction of the locking pin 4 is the same as the transmission direction of the workbench.
As shown in fig. 8 and 9, it is important to determine the position of the center of the alignment sphere 21 extending in the Z direction by the stylus 9 of the surface roughness profiler, and to align the center of the alignment sphere 21, i.e., the origin of the XYZ three-dimensional space coordinate system. Specifically, the stylus 9 is arbitrarily pulled in the X direction to take three curves on the aligning ball 21. Since the stylus 9 is moved in the X and Z directions, it is equivalent to intercept the alignment sphere 21 in three planes parallel to the XZ plane. The three planes are respectively intersected with the surface of the alignment ball 21 to form three curves, and the highest points of the three curves, which can be measured by the measuring needle 9, are A, B, C respectively, that is, A, B, C is the point with the largest Z-direction value in the three curves respectively.
At this time, since the alignment ball 21 has a hemispherical structure, the distances between each point on the surface of the alignment ball 21 and the center of the sphere are the same. It can be easily found that the distances of the X coordinates of the A, B, C points are equal, and the plane where the A, B, C point is located is the YZ plane. Using the principle of three points defining a circle, a circular cross-section can be defined on the alignment ball 21 by A, B, C points. The intersection line of the circular section and the alignment ball 21 is a curve S, and the highest point of the curve S can be measured through the measuring needle 9. The connecting line between the center of sphere and the highest point of the curve S is the extension line of the center of sphere in the Z direction, and the extension line is taken as the measuring center line. The steps are repeated, and the positioning precision of the measuring center line can be improved.
And finally, the gear 1 to be measured moves along the Y direction along with the workbench, and when the gear teeth of the gear 1 to be measured move to the position of the measuring needle 9, the measuring needle 9 moves in the X direction and the Z direction for sampling, so that the profile curve of the gear 1 to be measured can be measured. The measurement result is automatically amplified into an actual profile curve in a computer system, and the plum-blossom-shaped angle of the gear 1 to be measured can be obtained by calculating the included angle of the curve. In the same way, the size of the back taper included angle of the gear 1 to be measured can be measured.
According to the gear measuring method, three curves are selected on the aligning ball 21 at will, the circular section is determined through three highest points of the three curves, and the highest point of the circular section is used as a measuring center line. The step of manually selecting the reference measuring point is avoided, and therefore the problem of low precision caused by manual selection is avoided. According to the invention, the measuring needle 9 can automatically determine the measuring center line only by installing the gear 1 to be measured on the gear positioning device and clicking the measuring start button on the computer, and the measuring center line has high selection precision and high automation degree. Not only can realize full automatic measurement process, but also can improve the detection precision of synchronizer gear sleeve and combination tooth, reduce the gear shift jamming, improve the smoothness of gear shift.
It can be understood that the gear measurement method of the present invention can also drive the alignment ball 21 to move along the Y direction through the workbench of the surface roughness profile meter, so that the probe 9 can arbitrarily draw three curves on the alignment ball 21 along the Y direction relative to the alignment ball 21. Then, the highest points of the three curves are measured by the measuring needle 9, the circular section in the XZ plane can be determined by the three highest points, and the extension line of the sphere center in the Z direction can also be determined by measuring the highest point of the circular section by the measuring needle 9.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention.
Claims (7)
1. A gear measuring method, characterized in that a gear measuring apparatus is used to measure a plum angle of a gear (1) to be measured, the gear measuring apparatus comprising: the device comprises a surface roughness profiler and a gear positioning device, wherein the gear positioning device is arranged on a workbench of the surface roughness profiler, and a measuring pin (9) on the surface roughness profiler measures the plum-blossom angle of the gear (1) to be measured;
the gear positioning device includes:
the gear to be measured (1) is sleeved on the positioning shaft (2), and an alignment ball (21) used for determining a measurement center is arranged at the top of the positioning shaft (2);
the positioning column (3) is arranged on one side of the gear (1) to be detected; and the number of the first and second groups,
the locking pin (4) is arranged on the positioning column (3), the locking pin (4) is positioned on one side of the gear teeth of the gear (1) to be tested, and the extension line direction of the locking pin (4) is the same as the transmission direction of the workbench;
the locking pin (4) is provided with a wheel tooth tenon (41) matched with a wheel tooth groove of the gear (1) to be tested, and the wheel tooth tenon (41) is provided with a wheel tooth eye (42) matched with the wheel tooth groove of the gear (1) to be tested, so that the locking pin (4) is selectively inserted into the wheel tooth groove or clamped on the wheel tooth; when the locking pin (4) is inserted into the gear tooth groove or clamped on the gear tooth, the gear tooth to be measured of the gear (1) to be measured is located on the extension line of the locking pin (4), so that the measuring needle (9) can be in contact with the gear tooth to be measured;
the gear measuring method comprises the following steps:
s1, determining the transmission direction of a workbench of the surface roughness profiler as the Y direction, determining the axial direction of the positioning shaft (2) as the Z direction, and determining the directions respectively vertical to the Y direction and the Z direction as the X direction;
s2, fixing the gear (1) to be tested on the positioning shaft (2), locking the gear (1) to be tested through the locking pin (4), and fixing the gear positioning device on the workbench;
s3, determining the position of the center of the alignment ball (21) in the Z direction extension line through a measuring pin (9) of the surface roughness profile gauge; the method specifically comprises the following steps:
s31, arbitrarily drawing three curves parallel to an XZ plane on the alignment ball (21) along the Y direction by the measuring needle (9);
s32, respectively measuring the highest points of the three curves to be A, B, C through the measuring needle (9);
s33, determining a circular section on the alignment ball (21) through the A, B, C three-point, wherein the intersection line of the circular section and the alignment ball (21) is a curve S;
s34, measuring the highest point of the curve S through the measuring needle (9);
s4, the gear (1) to be measured moves along the Y direction along the workbench, and when the gear teeth of the gear (1) to be measured move to the position of the measuring needle (9), the measuring needle (9) moves upwards in the X direction and the Z direction to measure the profile curve of the gear (1) to be measured.
2. The gear measuring method according to claim 1, characterized in that a locking groove (31) is formed in the positioning column (3), the locking pin (4) is installed in the locking groove (31), an elastic member (5) is installed between the positioning column (3) and the locking pin (4), and the elastic member (5) pushes the locking pin (4) in the gear tooth groove or on the gear tooth.
3. The gear measuring method according to claim 2, wherein a limiting member (43) is disposed at the tail of the locking pin (4), and the locking pin (4) is installed in the locking groove (31) in a limiting manner through the limiting member (43) after penetrating through the positioning column (3).
4. The gear measuring method according to claim 1, characterized in that a bushing (6) matched with the inner diameter of the gear (1) to be measured is sleeved outside the positioning shaft (2), a gasket (7) is sleeved outside the bushing (6), and the gasket (7) enables the gear teeth of the gear (1) to be measured to be located at the position of the locking pin (4).
5. Gear measuring method according to claim 4 characterized in that said positioning shaft (2) is further externally sleeved with a pressing sheet, said pressing sheet pressing said gear (1) to be measured against said spacer (7) along the axial direction of said positioning shaft (2).
6. Gear measuring method according to any of claims 1 to 5 characterized in that a base (8) is connected to both the positioning shaft (2) and the positioning post (3), said base (8) being further provided with a connection hole (81) for connection with a work table of a surface roughness profiler.
7. The gear measurement method according to any one of claims 1 to 5, wherein in step S2:
when the number of the gear teeth of the gear (1) to be tested is odd, the locking pin (4) is rotated and is inserted into the gear tooth groove of the gear (1) to be tested through the gear tooth tenon (41); or,
when the teeth of a cogwheel quantity of gear (1) that awaits measuring is the even number, rotates locking round pin (4), through teeth of a cogwheel eye (42) joint is in on the teeth of a cogwheel of gear (1) that awaits measuring.
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| CN202010867617.9A CN112051054B (en) | 2020-08-26 | 2020-08-26 | Gear positioning device, gear measuring device and measuring method |
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| CN202010867617.9A CN112051054B (en) | 2020-08-26 | 2020-08-26 | Gear positioning device, gear measuring device and measuring method |
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| CN112857981A (en) * | 2020-12-28 | 2021-05-28 | 国营第六一六厂 | Clamp for testing strength of gear teeth of cylindrical straight-tooth gear |
| WO2023230772A1 (en) * | 2022-05-30 | 2023-12-07 | 玉环普天单向器有限公司 | Measurement device and method for straightness of planetary gear finished product |
| CN115265321A (en) * | 2022-07-11 | 2022-11-01 | 东风汽车股份有限公司 | Device for detecting inclination of conical surface of valve seat of cylinder cover and using method of device |
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