CN211147543U - Gauge for measuring groove depth of gear sleeve locking block - Google Patents
Gauge for measuring groove depth of gear sleeve locking block Download PDFInfo
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- CN211147543U CN211147543U CN201922353177.0U CN201922353177U CN211147543U CN 211147543 U CN211147543 U CN 211147543U CN 201922353177 U CN201922353177 U CN 201922353177U CN 211147543 U CN211147543 U CN 211147543U
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Abstract
The utility model discloses a checking fixture for measuring the depth of a tooth sleeve locking block groove, which comprises a base and a checking fixture main body; the positioning mandrel is fixedly connected with the checking tool main body and sleeved with the positioning gear sleeve; the first lever is positioned at the lower part of the positioning mandrel, is integrally arranged along the axial direction of the positioning mandrel, the measuring end of the first lever is provided with a first measuring head adjacent to the inner wall surface of the gear sleeve, and the other end of the first lever is hinged with the detection tool main body in the hinged part; the middle position of the first lever is provided with a first hinge part. The measuring end of the second lever is provided with a second measuring head clamped into the corresponding tooth sleeve sliding block groove, the second lever is positioned on the upper surface of the first lever, and the other end of the second lever is provided with a measuring surface adjacent to a dial indicator measuring head of the dial indicator; the middle end of the second lever and the first lever are hinged to the first hinged portion, and the dial indicator is connected above the checking fixture body. The utility model discloses utilize two lever structure, a lever measurement tooth cover center changes, and a lever measurement slider groove radius changes to dial indicator direct indication radius value has the advantage that the precision is high on the lever differential changes.
Description
Technical Field
The utility model relates to a synchronous ware technical field, concretely relates to measure examining utensil of tooth cover locking piece groove depth degree.
Background
The synchronizer is a necessary product of the automobile in the development stage to the popularization stage, the personnel rights of the important invention product of modern industry, namely the control driving of the automobile from complicated and long-term operation technical work experience are changed into a method which is easy to master by each ordinary person, the gear sleeve is an important part of the synchronizer of the automobile driver, the good and bad quality of the synchronizer directly influences the control performance of the automobile, the gear sleeve can ensure that each gear is smooth during gear shifting due to the action of the synchronizer in the driver, and each gear can be locked after gear shifting, so that the gear sleeve part is small in size but complex in structure, the gear sleeve can be completed only after dozens of procedures in the process of machining the gear sleeve product, and the problem can be found at any time by accurate detection of good machining equipment and good detection means, so that the problem can be found and the parameter of the machining equipment can be adjusted in time to solve the problem.
The connection between the synchronizer gear sleeve and the gear hub is completed by a locking block, and three locking block grooves which are uniformly distributed are generally arranged on the gear sleeve and the gear hub and are also generally called as sliding block grooves. The radius size and the partition precision of slider groove directly influence the cooperation and the connection of synchronous ware tooth cover and tooth hub, influence the nature controlled in the production and processing of synchronous ware tooth cover, in order to satisfy meticulous technology quality, improve the yields of product, need detect the slider groove position of the tooth cover that processes to guarantee that the position of slider groove on the tooth cover is accurate, satisfy follow-up high-quality use.
The reverse gear synchronizer component comprises a gear sleeve which is annular, and the gear is arranged on the inner wall. A plurality of locking block grooves 100 are formed in the middle of the gear sleeve in the width direction and in the radial inner portion of the gear sleeve, and are used for being assembled with the gear hub. As shown in fig. 1 and 2, three slider grooves 100 are uniformly distributed in the circumferential direction of the gear sleeve, and a slider channel steel ball portion is a partial spherical surface with a diameter r of 5 mm. The detection to the slider position among the prior art adopts artifical hand-held type to examine utensil mostly, uses very loaded down with trivial details, and whole inefficiency.
In addition, the traditional check tool has a structure problem, some gear sleeves directly measure the diameter of a locking block groove by a three-point method, for example, a Chinese utility model patent with an authorization notice number of CN208795103U and an application date of 2018, 10, 12 and 12 is named as a synchronizer gear sleeve sliding block groove position degree check tool, after a standard part is fixed, a measuring head of a dial indicator just props against a side wall corresponding to the standard part, and data can be measured, wherein the data is also used as standard data of a reference; and then, sleeving the gear sleeve to be detected on a detection boss, wherein the detection boss is provided with three arc surfaces for sleeving and positioning with the gear sleeve, and after data are read out, the data are compared with the previously obtained standard data, and the larger the difference is, the larger the deviation is. Even if the measured diameters of the lock block grooves on the gear sleeve are right, if the diameters of the circular arcs formed by the three lock block grooves are not coaxial with the gear sleeve, the gear sleeve and the gear hub cannot work normally, so the measurement of the radius of the lock block groove of the gear sleeve needs to be based on the tooth crest circle, and the measurement directly influences the quality of the synchronizer.
For another checking tool with a lever structure, the problem of inaccurate measurement also exists, and the structure is shown in fig. 3. The measuring end adopts a lever structure, a lever which is provided with a measuring head which is the same as the steel ball with the required size of the locking block is arranged, and the depth of the sliding block groove is positioned by the addendum circle of the gear sleeve. In order to ensure that each gear sleeve can be smoothly taken down after being sleeved on the positioning mandrel. Several gaps are left between the positioning mandrel and the gear sleeve, such as the gear sleeve in figures 1 and 2, and the diameter E of the addendum circle is
The maximum physical size of the gear sleeve, namely the minimum size of the addendum circle, is 73.65, and the diameter of the positioning mandrel is 0.02mm smaller than the minimum size of the addendum circle. Positioning mandrel, calibration piece, positioning mandrel and actual measurementThe gear sleeves have the problem of non-coaxial.
In addition, in order to reduce measurement errors in the prior art, the size of a calibration piece is the median size of a product, the diameter of the tooth top circle of the gear sleeve is changed along with repeated sharpening and heat treatment influences of a broach in the gear sleeve processing process, so errors caused by the diameter change of the tooth top circle in measurement cannot be overcome, if the diameter of the gear sleeve is the largest, the size of the calibration piece is the median of the product, the gear sleeve is positioned on the same positioning shaft, the radius influence error of the upper part of the gear sleeve is 0.05mm, the measurement result is 'actual size +0.05 mm', the tooth top circle size of the gear sleeve is the smallest, the measurement result is 'actual size-0.05 mm', and the problem that different shafts exist between the calibration piece and the actual gear sleeve to be measured is solved.
In summary, in the prior art, the problems of reduced measurement accuracy and large error are caused by the problem of different axes among the positioning mandrel, the calibration piece and the actually measured gear sleeve.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a measurement tooth cover slider groove degree of depth's that precision is high examine utensil to solve the above-mentioned weak point in the technique.
In order to achieve the above object, the present invention provides the following technical solutions:
the base is used for supporting the checking fixture;
the checking fixture body is fixedly connected with the base, and a hinged part is arranged at the bottom of the checking fixture body;
the positioning mandrel is fixedly connected with the checking fixture main body, is provided with a positioning surface sleeved with the gear sleeve and is used for sleeving and positioning the gear sleeve to be detected;
the first lever is positioned at the lower part of the positioning mandrel, the whole positioning mandrel is axially arranged along the positioning mandrel, a first measuring head adjacent to the inner wall surface of the gear sleeve is arranged at the measuring end of the first lever, and the other end of the first lever is hinged with the detection tool main body on the hinged part;
the measuring end of the second lever is provided with a second measuring head clamped into the corresponding tooth sleeve sliding block groove, and the other end of the second lever is provided with a measuring surface adjacent to a dial indicator measuring head of a dial indicator;
the second measuring head can move along the radial direction of the gear sleeve through the mandrel spring;
the second lever is positioned above the first lever, the middle end of the second lever and the first lever are hinged to the first hinge part, and the upper surface of the first lever can drive the second lever to rotate at the first hinge part;
the dial indicator is connected above the checking fixture body, and a measuring rod of the dial indicator penetrates through the checking fixture body.
In the technical scheme, the utility model provides an examine utensil, to the structural problem who exists in examining utensil detection of traditional tooth cover locking piece groove radius or degree of depth, the utility model discloses utilize two lever structure, the change of tooth cover center is measured to a lever, and locking piece groove radius change is measured to a lever to percentage table direct display radius value in the differential change of lever, its principle is through mechanical structure realization mathematics addition and subtraction, and a lever is measured out with tooth cover center now promptly, and another lever is measured out with radius size again. Has the advantage of high precision.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to these drawings.
FIG. 1 is a front view of a gear sleeve;
FIG. 2 is a side sectional view of the gear sleeve;
FIG. 3 is a schematic view of a prior art clamp configuration;
FIG. 4 is a schematic structural view of the inspection device provided by the present invention;
FIG. 5 is a first mathematical model of a measurement profile of the fixture provided by the present invention;
FIG. 6 is a second mathematical model of a measurement of a fixture provided by the present invention;
FIG. 7 is a third mathematical model of a measurement condition of the measuring tool provided by the present invention;
fig. 8 is a schematic side view of the gauge body according to the present invention;
fig. 9 is a schematic top view of the first lever according to the present invention;
fig. 10 is a schematic front view of the first lever according to the present invention;
fig. 11 is a schematic structural diagram of a second lever according to the present invention;
fig. 12 is a schematic partial structure diagram of a first measurement situation provided by the present invention;
fig. 13 is a schematic partial structure diagram of a second measurement situation provided by the present invention;
fig. 14 is a schematic structural view of a positioning mandrel provided by the present invention;
fig. 15 is a schematic cross-sectional structure view taken along a-a of fig. 14 according to the present invention.
Description of reference numerals:
1. a gauge body; 2. positioning the mandrel; 3. a first lever; 4. a lever shaft; 5. a body rotating shaft; 6. A second lever; 7. a dial indicator;
11. a hinge portion; 12. a plug screw; 13. a body spring; 14. a push rod;
21. a spindle spring; 22. a mandrel screw; 23. positioning teeth;
30. a first probe; 31. a first hinge portion; 32. a gear sleeve contact surface; 33. a square hole;
60. a second probe; 62. measuring the surface; 63. a horizontal bar; 64. a first vertical plate; 65. a second vertical plate;
71. a dial indicator measuring head;
100. and a lock block groove.
Detailed Description
In order to make the technical solution of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings.
As shown in fig. 1-15, the embodiment of the utility model provides a measure utensil of examining of tooth cover slider groove degree of depth, include: the base and the gauge body 1 are arranged, and the bottom of the gauge body 1 is provided with a hinge part 11;
the positioning mandrel 2 is fixedly connected with the checking fixture main body 1, is provided with a positioning surface sleeved with the gear sleeve, and is used for sleeving and positioning the gear sleeve to be detected;
the first lever 3 is positioned at the lower part of the positioning mandrel 2, the whole positioning mandrel 2 is axially arranged, a first measuring head 30 adjacent to the inner wall surface of the gear sleeve is arranged at the measuring end of the first lever 3, and the other end of the first lever 3 is hinged to the hinging part 11 with the gauge body 1;
the middle position of the first lever 3 is provided with a first hinge part 31, and the ratio of the distance A between the first side head 30 and the first hinge part 31 to the distance B between the first hinge part 31 and the hinge part 11 is 4:1 along the axial direction of the gear sleeve to be measured;
the measuring end of the second lever 6 is provided with a second measuring head 60 clamped into a corresponding tooth sleeve locking block groove, and the second measuring head 60 can move along the radial direction of the tooth sleeve through a mandrel spring 21;
the second lever 6 is positioned above the first lever 3, and the other end of the second lever is provided with a measuring surface 62 which is adjacent to a dial indicator measuring head 71 of the dial indicator 7;
the middle end of the second lever 6 and the first lever 3 are hinged to the first hinge part 31, and the ratio of the distance C from the measuring end of the second lever to the first hinge part 31 along the axial direction of the measured gear sleeve to the distance D from the first hinge part 31 to the measuring head 71 of the dial indicator, namely D is 1: 1;
the dial indicator 7 is connected above the checking fixture body 1, and the measuring rod of the dial indicator penetrates through the checking fixture body 1.
Specifically, examine a main part 1 and be the rectangular plate structure, through mechanical connecting piece fixed connection such as screw, pin on the base, examine the front end of a main part 1 and set up the hole that matches with positioning core axle 2, positioning core axle 2 and examine a main part and carry out fixed connection through mechanical connecting piece screw commonly used, pin etc.. The gear sleeve is sleeved outside the positioning mandrel 2.
The first lever 3 and the second lever 6 are assembled at the lower parts of the gauge body 1 and the positioning mandrel 2, are integrally long rod-shaped, and are arranged along the axial direction of the gear sleeve in the length direction.
Through grooves with corresponding positions are formed below the gauge body 1 and below the positioning mandrel 2 along the axial direction of the gear sleeve; the first lever 3 is arranged in the through groove; a body rotating shaft 5 penetrates through the through groove and a position corresponding to one end of the first lever 3, which is far away from the measuring end of the first lever; the axis position of the body rotation shaft 5 forms a hinge portion 11.
Preferably, the positioning mandrel 2 is provided with a threaded hole in the vertical direction passing through the axis thereof, the mandrel screw 22 is connected in a threaded connection manner, and the mandrel spring 21 abuts between the bottom surface of the mandrel screw 22 and the top surface of the measuring end of the second lever 6. Can guarantee like this that second gauge head 60 compresses tightly with tooth cover slider groove all the time under the effect of spring, when the slider groove is vertical to have the removal, the motion of following the locking piece groove that second gauge head 60 can be sensitive, measure more accurately.
Preferably, the checking fixture main body 1 is vertically provided with a threaded through hole, a matched screw plug 12 penetrates through the threaded through hole, the lower bottom surface of the screw plug 12 is connected with a body spring 13, and the measuring end of the first lever 3 is pressed on the inner wall surface of the gear sleeve under the driving of the body spring 13; the driving positions of the body spring 13 and the first lever 3 are located between the measuring end of the first lever 3 and the lever rotating shaft 5. Therefore, the lower surface of the first lever 3 is supported by the inner wall surface of the gear sleeve and the body rotating shaft 4, the upper surface of the first lever has the effect of the body spring 13, and when the gear sleeve moves vertically, the first measuring head 30 can sensitively move along with the gear sleeve, so that the measurement is more accurate.
Preferably, the check tool main body 1 is provided with a screw plug 12, a body spring 13 and a push rod 14 in a penetrating manner from top to bottom in sequence; the body spring 13 is abutted between the bottom surface of the screw plug 12 and the top surface of the push rod 14; the extending end of the push rod 14 penetrates through the second lever 6 and then contacts with the upper surface of the first lever 3. When the body spring 13 is to press the first lever 13, the second lever 6 needs to be penetrated, so that the possibility that the length of the body spring 13 is long is caused, and the compression effect of the spring is influenced. Therefore, a push rod 14 is arranged between the spring body 13 and the first lever 13, and part of the push rod 14 extends into the threaded through hole, and the other part of the push rod is contacted with the first lever 3 after penetrating through the through hole of the second lever 6.
Preferably, the gear sleeve contact surface 32 of the first probe 30 makes point contact with the teeth where the slider slot is located. Specifically, the sleeve contact surface 32 is preferably a semi-spherical surface having a radius R1, and one skilled in the art will appreciate that the smaller the radius, the more accurately the sleeve contact surface 32 contacts the tooth. During measurement, the two levers are lapped on teeth which are processed with sliding block grooves. As can be appreciated by those skilled in the art, the measuring end of the first lever 3 is in point contact or line contact with the gear sleeve, and the measuring accuracy is higher.
Preferably, the second lever 6 is a flat F-shaped lever with a downward opening, and includes a horizontal rod 63, a first vertical plate 64 extends downward from an end of the horizontal rod 63, a second measuring head 60 is fixedly connected to a bottom surface of the first vertical plate 64, and the second measuring head 60 is a sphere having the same diameter as the ball part of the lock block channel steel.
A second vertical plate 65 extends downwards at the middle position of the horizontal rod 63, and the second vertical plate 65 extends into a square hole 33 formed in the upper surface of the first lever 3;
the second vertical plate 65 and the first lever 3 are provided with a lever rotating shaft 4 at corresponding positions;
the first and second risers 64 and 65 form a space for accommodating the first lever 3. The measuring end of the first lever 3 is surrounded by a first vertical plate 64, the second measuring head 60 is in front, and the first measuring head 30 is behind the first vertical plate 64 and is further away from the lock block groove. The design structure is compact and the space is saved.
Preferably, the circumferential positioning of the toothed sleeve is measured by providing the positioning spindle 2 with at least one positioning tooth 23, see fig. 14-15. The positioning teeth 23 are vertically embedded into the cylindrical surface of the positioning mandrel 2, and tooth parts are arranged on the surface of the protruded cylindrical surface, so that the positioning teeth are just positioned in tooth grooves, and the slider grooves are not influenced by the circumferential direction during measurement. The positioning core shaft 2 can be fixedly connected with the positioning teeth 23 and the positioning core shaft 2 in the axial direction through arranging screws. The circumferential and axial positioning means of the gear sleeve and the positioning mandrel belong to the common knowledge in the field of gear sleeve detection tools, and are not described in detail herein.
The measurement process and principle are explained in three cases: taking the product size in FIG. 2 as an example, the calibration piece size is the median value of the product, the tolerance is 1/10 of the product tolerance, and the addendum circle diameter E is
The depth of the lock block groove, namely the radius R of the lock block groove is 33.375 +/-0.1 mm, and the diameter R of the ball part of the lock block channel steel is 5 mm.
The first method comprises the following steps: only when the radius of the locking block groove changes:
when in measurement, the calibration piece is placed on the positioning mandrel 2 of the checking fixture, the dial indicator is set to zero, and the gear sleeve product is measured in the same way. When the addendum circle of the gear sleeve is the same as the diameter of the calibration piece in the median value, and the radius of the lock block groove is changed from 33.375 to a, as shown in fig. 12, there are two lock block grooves, the lower lock block groove is shown by a dotted line as an ideal position, and the upper lock block groove is an actual position to be measured. In practice, the ball portion of the lock block channel is usually offset upward or downward from the ideal position. The first lever 3 does not change when the meter is aligned relative to the calibration part, the first lever does not rotate around the connecting body pin shaft 5, the second lever 6 rotates around the lever pin shaft 4 due to the change of the radius of the lock block groove, the distance D from the measuring point of the second measuring head 60 to the lever pin shaft 4 is the same as the distance C from the lever pin shaft 4 to the measuring head 71 of the dial indicator, and therefore the change 1:1 of the radius of the lock block groove is transmitted to the dial indicator to be displayed.
And the second method comprises the following steps: when only the addendum circle radius of the gear sleeve changes:
as shown in fig. 13, when the tooth crest diameter of the gear sleeve is not the median but is changed by Δ, and the position of the lock piece groove relative to the lock piece groove of the calibration piece is not changed: at this moment, theoretically, the tooth top circle of the gear sleeve is hung on the positioning mandrel 2, at this moment, the center of the gear sleeve changes delta/2 relative to the center of the positioning mandrel 2, and the position of the lock block channel steel ball part relative to the center of the positioning mandrel 2 does not change and is the same as that of the calibration part. The ball of the lock block channel steel is changed by delta/2 upwards relative to the center of the gear sleeve, namely equal to R (the radius of the lock block groove of the calibration piece) -delta/2.
In actual measurement, the first measuring head 30 moves downwards by Δ due to the fact that the gear sleeve and the positioning core shaft 2 are not coaxial, the first lever 3 rotates around the body pin shaft 5, the lever pin shaft 4 is a part of the first lever 3, the distance a between the lever pin shaft 4 and the body pin shaft 5 is 1/4 of the distance B between the first lever 3 and the body pin shaft 5, and therefore the lever pin shaft 4 also moves downwards by Δ/4. And because the measuring point of the second measuring head 60 at the lock block groove does not displace relative to the center of the positioning core shaft 2, the second lever 6 rotates by taking the second measuring head 60 as a fulcrum, and the distance from the measuring point of the second measuring head 60 to the lever rotating shaft 4 is the same as the distance from the lever rotating shaft 4 to the measuring point of the dial indicator measuring head 71 according to the downward displacement of the lever pin shaft 4 by delta/4, the dial indicator value displays downward delta/2 when the lever rotating shaft 4 displaces downward by delta/4, namely the value of R-delta/2 is consistent with the theoretical value of the analysis.
And the third is that: the tooth top radius of the gear sleeve changes, and when the radius of the locking block groove also changes:
this case belongs to the superposition of the first and second types. The principle is similar and will not be described again.
Fig. 5 is a mathematical model of the first measurement situation, fig. 6 is a mathematical model of the second measurement situation, fig. 7 is a mathematical model of the third measurement situation, to sum up, the first lever 3 measures the center of the gear sleeve, the second lever 6 measures the lock block groove radius of the gear sleeve on the basis of the center of the gear sleeve, the variation of the first measuring head 60 is 1:1 to affect the change of the dial gauge, the variation of the lever pin 4 is 1: 2 to affect the change of the dial gauge, the scheme is to measure the lock block groove radius of the gear sleeve by a mathematical addition and subtraction principle through a differential measurement principle, and the mathematical formula is that the value L of the dial gauge is Δ 1-2 Δ 2, Δ 1 is the radius of the slider groove, Δ 2 is the variation of the addendum circle, and the variation of the lever pin 4 following the first lever 3, the size of the addendum circle measured by the first lever 3 is represented or reflected on the lever pin 4, and the lever pin 4 is the differential point shared by the first lever 3 and the second lever 6.
While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the present invention. Accordingly, the drawings and description are illustrative in nature and should not be construed as limiting the scope of the invention.
Claims (10)
1. The utility model provides a measure utensil of examining of tooth cover locking piece groove depth which characterized in that includes:
the base is used for supporting the checking fixture;
the detection tool body (1) is fixedly connected with the base, and a hinged part (11) is arranged at the bottom of the detection tool body (1);
the positioning mandrel (2) is fixedly connected with the checking fixture main body (1), is provided with a positioning surface sleeved with the gear sleeve, and is used for sleeving and positioning the gear sleeve in the horizontal direction;
the first lever (3) is positioned at the lower part of the positioning mandrel (2), and the whole first lever (3) is arranged along the axial direction of the positioning mandrel (2);
a first measuring head (30) which is adjacent to the inner wall surface of the gear sleeve is arranged at the measuring end of the first lever (3), and the other end of the first lever (3) and the gauge body (1) are hinged to the hinged part (11);
the first lever (3) is provided with a first hinge part (31) between the first measuring head (30) and the hinge part (11);
the measuring end of the second lever (6) is provided with a second measuring head (60) clamped into the corresponding gear sleeve sliding block groove, and the other end of the second lever (6) is provided with a measuring surface (62) adjacent to a dial indicator measuring head (71) of the dial indicator (7);
the second measuring head (60) can move along the radial direction of the gear sleeve through the mandrel spring (21);
the second lever (6) is positioned above the first lever (3), the middle end of the second lever (6) is hinged with the first lever (3) at the first hinge part (31), and the upper surface of the first lever (3) can drive the second lever (6) to rotate at the first hinge part (31);
the dial indicator (7) is connected above the checking fixture body (1), and a measuring rod of the dial indicator penetrates through the checking fixture body (1).
2. Gauge according to claim 1, characterized in that the ratio between the distance between the first gauge head (30) and the first hinge (31) and the distance between the first hinge (31) and the hinge (11) is 4: 1;
the ratio of the distance between the measuring end of the second lever (6) and the first hinge part (31) to the distance between the first hinge part (31) and the dial indicator measuring head (71) is 1: 1.
3. Checking tool according to claim 1, characterized in that the positioning spindle (2) is vertically arranged with a spindle screw (22), the spindle spring (21) abutting between a bottom surface of the spindle screw (22) and a top surface of the measuring end of the second lever (6).
4. The detection tool according to claim 1, characterized in that a vertically arranged plug screw (12) penetrates through the detection tool main body (1), a body spring (13) is connected to the lower bottom surface of the plug screw (12), and the measuring end of the first lever (3) is pressed on the inner wall surface of the gear sleeve under the driving of the body spring (13);
the pressing position of the body spring (13) and the first lever (3) is positioned between the measuring end of the first lever (3) and the first hinge part (31).
5. The checking fixture according to claim 4, characterized in that the checking fixture main body (1) is provided with the plug screw (12), the body spring (13) and a push rod (14) in sequence from top to bottom;
the body spring (13) is abutted between the bottom surface of the screw plug (12) and the top surface of the push rod (14);
the extending end of the push rod (14) penetrates through the second lever (6) and then is in contact with the upper surface of the first lever (3).
6. The checking fixture according to claim 1, characterized in that a through groove is formed below the checking fixture body (1) along the axial direction of the gear sleeve;
the first lever (3) is arranged in the through groove;
a body rotating shaft (5) penetrates through the through groove and a position corresponding to one end, far away from the measuring end, of the first lever (3);
the axis position of the body rotating shaft (5) forms the hinge part (11).
7. A gauge according to claim 1, characterized in that the sleeve contact surface (32) of the first gauge head (30) is in point contact with the internal teeth of the sleeve in a radial direction.
8. A gauge according to claim 7, characterized in that the sleeve gear contact surface (32) is hemispherical.
9. The testing fixture according to claim 1, characterized in that the second lever (6) comprises a horizontal rod (63), a first vertical plate (64) extends downwards from the end of the horizontal rod (63), and a second measuring head (60) with the size consistent with that of the gear sleeve slider groove is fixedly connected to the bottom surface of the first vertical plate (64);
a second vertical plate (65) extends downwards at the middle position of the horizontal rod (63), and the second vertical plate (65) extends into a square hole (33) formed in the upper surface of the first lever (3);
a lever rotating shaft (4) is arranged at the corresponding positions of the second vertical plate (65) and the first lever (3) in a penetrating way to form the first hinge part (31);
the first vertical plate (64) and the horizontal rod (63) form a space for accommodating the first lever (3).
10. The testing fixture according to claim 1, characterized in that the positioning mandrel (2) is provided with positioning teeth (23) which are matched with the tooth sockets of the tooth sleeve in shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922353177.0U CN211147543U (en) | 2019-12-23 | 2019-12-23 | Gauge for measuring groove depth of gear sleeve locking block |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922353177.0U CN211147543U (en) | 2019-12-23 | 2019-12-23 | Gauge for measuring groove depth of gear sleeve locking block |
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| Publication Number | Publication Date |
|---|---|
| CN211147543U true CN211147543U (en) | 2020-07-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922353177.0U Active CN211147543U (en) | 2019-12-23 | 2019-12-23 | Gauge for measuring groove depth of gear sleeve locking block |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112729078A (en) * | 2020-12-18 | 2021-04-30 | 贵州华烽电器有限公司 | Open sleeve internal thread concentricity detection device |
| CN113091573A (en) * | 2019-12-23 | 2021-07-09 | 长春市春求科技开发有限公司 | Gauge for measuring groove depth of gear sleeve locking block |
-
2019
- 2019-12-23 CN CN201922353177.0U patent/CN211147543U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113091573A (en) * | 2019-12-23 | 2021-07-09 | 长春市春求科技开发有限公司 | Gauge for measuring groove depth of gear sleeve locking block |
| CN112729078A (en) * | 2020-12-18 | 2021-04-30 | 贵州华烽电器有限公司 | Open sleeve internal thread concentricity detection device |
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