Differential shell vertical type run-out measuring device

Abstract

The utility model discloses a differential shell vertical run-out measuring device, which relates to the technical field of differential shell detection equipment and comprises a support provided with a workpiece clamping part and a workpiece detection part. The workpiece clamping part comprises a bottom boss and a top boss which are oppositely arranged, and the top boss is connected with the support through a lifting mechanism. The workpiece detection part comprises a supporting column, a first detection meter and a second detection meter, the supporting column is fixedly connected with the support, the supporting column is sleeved with a connecting plate, the connecting plate is provided with a plurality of adjusting holes, and the first detection meter and the second detection meter are fixedly connected with the connecting plate through the adjusting holes; and a positioning ball matched with the positioning hole is arranged in the positioning seat. Therefore, through the arrangement of the workpiece clamping part and the workpiece detection part, detection of coaxiality and circle run-out can be completed through one-time clamping of the differential shell, errors caused by clamping and positioning can be greatly avoided, and the device is suitable for rapid detection.

Description

Technical Field

[0001] The utility model relates to the technical field of differential shell detection equipment, in particular to a differential shell vertical runout measurement device. Background Art

[0002] The automobile reducer housing, also known as the differential reducer housing, is the differential housing of the rear axle reducer of a car and has the function of protecting the differential. The differential is placed in the differential housing, which is composed of various types of gears. The processing accuracy of the differential housing has a very important impact on the automobile's turning differential transmission. Generally, the differential housing is processed after fine turning, and then the pores are processed. Affected by the processing equipment, it generally requires at least two clampings to complete the processing of all holes. The clamping and positioning on both sides will produce a certain amount of error. After the differential housing is processed, it is necessary to detect the end face circular runout to determine whether it meets the design requirements.

[0003] In the prior art, there is a patent application document with the publication number CN218511710U and the patent name of a circular runout detection tool for automobile differentials. In this document, the workpiece is placed on the detection frame body, and the position of the detection disc is adjusted so that the detection disc fits the surface of the differential shell. When the differential shell rotates, the detection table is used to determine whether the coaxiality of the differential shell meets the design requirements. Since the detection tool uses parts such as an adjustment cylinder, a detection swing arm, and a micro-swing bracket, not only is the installation more complicated, but each component will not only have processing errors during processing, but also installation errors during installation. After a large number of errors are accumulated, the detection results will be inaccurate. Utility Model Content

[0004] In order to overcome the above-mentioned defects, the purpose of the utility model is to provide a differential shell vertical runout measuring device, which can complete the coaxiality and circular runout detection by clamping the differential shell once, can greatly avoid the errors caused by clamping positioning, and is suitable for rapid detection.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a differential shell vertical runout measuring device, including a bracket, the bracket is provided with a workpiece clamping part and a workpiece detection part; the workpiece clamping part includes a bottom boss and a top boss arranged oppositely, and the top boss is connected to the bracket through a lifting mechanism; the workpiece detection part includes a support column, a first detection table and a second detection table, the support column is fixedly connected to the bracket, the support column sleeve is provided with a connecting plate, the connecting plate is provided with a plurality of adjustment holes, and the first detection table and the second detection table are both fixedly connected to the connecting plate through the adjustment holes; the bracket is also provided with a rotation positioning mechanism, the rotation positioning mechanism includes a support positioning plate and a positioning seat, the support positioning plate is provided with a positioning hole, the support positioning plate is fixedly connected to the connecting plate, and a positioning ball adapted to the positioning hole is provided in the positioning seat.

[0006] Preferably, the lifting mechanism includes a lifting column and a pressure handle; the lifting column penetrates the upper plate of the bracket, a counterweight block is fixed at the upper end of the lifting column, a top boss is fixed at the lower end, a pressure spring is clamped between the upper plate and the top boss, and the pressure spring is sleeved on the lifting column.

[0007] Preferably, a pressure handle is further provided in the lifting mechanism, the pressure handle is hinged to the upper plate through a support seat, and a toggle wheel for toggling the counterweight is provided at the end of the pressure handle.

[0008] Preferably, the central axes of the bottom boss and the top boss are colinear with the central axis of the lifting column.

[0009] Preferably, the connecting plate is also fixed with a toggle handle.

[0010] Preferably, the rotary positioning mechanism is further provided with a workpiece positioning plate and a limit stopper, and the workpiece positioning plate is fixed to the bracket.

[0011] Preferably, the limit stop includes a first limit stop and a second limit stop, the first limit stop is close to the top boss and is used to limit the working position of the connecting plate; the second limit stop fixes the bracket and is located on the rotational circumference of the connecting plate and is used to limit the maximum rotational position of the connecting plate; the positioning seat includes a first positioning seat and a second positioning seat, the first positioning seat is close to the top boss and is used to limit the position of the supporting positioning plate in the working state; the second positioning seat is located on the rotational circumference of the connecting plate and is used to temporarily fix the maximum rotational position of the supporting positioning plate.

[0012] Preferably, a tension spring is further provided on the top of the connecting plate, and the connecting plate and the bracket are respectively fixed at both ends of the tension spring.

[0013] Preferably, a third test gauge is provided between the first test gauge and the second test gauge, the models of the first test gauge, the second test gauge and the third test gauge are completely the same, and the extension lengths of the first test gauge and the second test gauge are the same.

[0014] Preferably, the chamfer angles of the opposite surfaces of the bottom boss and the top boss are the same, both of which are 30-60 degrees.

[0015] After adopting the above technical solution, the beneficial technical effects achieved by the utility model are:

[0016] 1. Since the workpiece clamping part is arranged on the bracket, after the workpiece is clamped and fixed, the workpiece detection part is used to detect the circular runout of the end face of the workpiece. In this way, the circular runout of all end faces can be detected through one-time clamping, which is especially suitable for workpieces with high coaxiality requirements such as differential shells.

[0017] 2. Since a connecting plate is provided in the workpiece detection part, standard parts can be used and multiple detection gauges of the same model can be fixed at the same time. The movement angle and movement position of the connecting plate are certain, thus greatly avoiding inaccurate detection results caused by human operation errors.

[0018] 3. The detection part adopts a rotating method to approach the workpiece. Compared with the traditional method of using a slide rail in linear motion, the number of standard connectors used is less, the connection accuracy can be higher, the cost is lower, and the positions of the first detection table and the second detection table are fixed on the same side. Therefore, the circular runout values ​​of the two end faces can be detected at one time, and then the coaxiality of the end faces can be determined. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a reference schematic diagram of the use status of the differential housing vertical runout measuring device of the utility model;

[0020] Figure 2 This is a schematic diagram of the structure of the utility model for hiding the workpiece to be tested;

[0021] Figure 3 It is a schematic diagram of the structure of the utility model after some parts are hidden;

[0022] Figure 4 yes Figure 3 A magnified image of point A;

[0023] Figure 5 It is a schematic diagram of the bottom equiaxed side structure of the utility model;

[0024] In the figure, 1, bracket; 11, upper plate; 12, lower plate; 13, workpiece positioning plate;

[0025] 2. Workpiece clamping part; 21. Bottom boss; 22. Top boss; 23. Lifting column; 24. Pressure handle; 25. Counterweight; 26. Pressure spring; 27. Support seat; 28. Toggle wheel; 29. ​​Toggle handle;

[0026] 3. Workpiece detection part; 31. Support column; 32. Connecting plate; 33. First detection table; 34. Second detection table; 35. Third detection table;

[0027] 4. Rotational positioning mechanism; 41. Support positioning plate; 42. Positioning seat; 421. First positioning seat; 422. Second positioning seat; 43. Limit stop; 431. First limit stop; 432. Second limit stop; 44. Tension spring. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solutions and advantages of the utility model more clearly understood, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0029] See also Figure 1-Figure 5 The utility model provides a differential housing vertical runout measuring device, including a bracket 1, the bracket 1 is provided with a workpiece clamping portion 2 and a workpiece detection portion 3; the workpiece clamping portion 2 includes a bottom boss 21 and a top boss 22 arranged opposite to each other, and the top boss 22 is connected to the bracket 1 through a lifting mechanism; generally, the utility model is mainly used to detect the end face circular runout of a workpiece, and is particularly suitable for the housing of an automobile differential (hereinafter referred to as the differential housing). When in use, the top boss 22 is lifted up to a certain height and placed into the differential housing, so that the chamfers of the top boss 22 and the bottom boss 21 coincide with the chamfers at both ends of the differential housing to be detected. The differential housing generally uses the upper and lower chamfers as a positioning reference. After the first detection gauge 33 and the second detection gauge 34 are respectively abutted against the bearing end faces of the differential housing, the end face runout detection can be achieved.

[0030] The workpiece detection part 3 includes a support column 31, a first detection gauge 33 and a second detection gauge 34. The support column 31 is fixedly connected to the bracket 1. The support column 31 is sleeved with a connecting plate 32. The connecting plate 32 is provided with a plurality of adjustment holes. The first detection gauge 33 and the second detection gauge 34 are both fixedly connected to the connecting plate 32 through the adjustment holes. The adjustment holes are generally used to connect and adjust the position and height of the detection gauge. For the convenience of connection, the connecting parts generally used to fix the first detection gauge 33, the second detection gauge 34 and the third detection gauge 35 are all standard parts. In particular, the first detection gauge 33 and the second detection gauge 34 should ensure the consistency of the protruding length of the end at the position of the connecting plate 32, and the angular direction should also be consistent, so that when the workpiece is slowly rotated, the coaxiality of the two ends can be intuitively detected.

[0031] The bracket 1 is also provided with a rotation positioning mechanism 4, which includes a support positioning plate 41 and a positioning seat 42. The support positioning plate 41 is provided with a positioning hole. The support positioning plate 41 is fixedly connected to the connecting plate 32, and a positioning ball adapted to the positioning hole is provided in the positioning seat 42. The first test gauge 33 and the second test gauge 34 are fixed on the connecting plate 32, and are contacted with the end face of the differential shell by rotating a certain angle. An L-shaped support positioning plate 41 is provided at the bottom of the connecting plate 32. After being fixed by the positioning hole and the positioning ball at the bottom of the support positioning plate 41, the first test gauge 33 and the second test gauge 34 are in normal working state. In actual use, in order to prevent shaking during detection, a pin is generally fixed on the connecting plate 32, and a limit block is fixed on the bracket 1 to further ensure stability.

[0032] The lifting mechanism of the utility model includes a lifting column 23 and a pressure handle 24; the lifting column 23 penetrates the upper plate 11 of the bracket 1, a counterweight 25 is fixedly arranged at the upper end of the lifting column 23, a top boss 22 is fixedly arranged at the lower end, a pressure spring 26 is clamped between the upper plate 11 and the top boss, and the pressure spring 26 is sleeved on the lifting column 23. A pressure handle 24 is also provided in the lifting mechanism, the pressure handle 24 is hinged to the upper plate 11 through a support seat 27, and a toggle wheel 28 for toggling the counterweight 25 is provided at the end of the pressure handle 24. In order to facilitate and quickly take or fix the differential shell, a counterweight 25 is fixed at the top of the lifting column 23, and the pressure handle 24 and the support seat 27 are used to form a simple lever. The pressure handle 24 moves downward, and the toggle wheel 28 at the end lifts the counterweight 25. After the differential shell is placed, the counterweight 25 automatically falls down, and cooperates with the pressure spring 26 to press the differential shell with the top boss 22. The above process can also be performed by directly manually operating the differential housing to be clamped between the bottom boss 21 and the top boss 22 .

[0033] The central axis of the bottom boss 21 and the top boss 22 of the present invention is collinear with the central axis of the lifting column 23. The lifting column 23 has a high machining accuracy requirement to ensure that the central axis is on the same straight line after the differential housing is fixed.

[0034] The connecting plate 32 of the utility model is also fixed with a toggle handle 29. The toggle handle 29 has an extension effect, and the connecting plate 32 can be opened at a certain angle to facilitate the placement or removal of the differential housing.

[0035] The rotary positioning mechanism 4 of the present invention is also provided with a workpiece positioning plate 13 and a limit stopper 43. The workpiece positioning plate 13 is fixed to the lower plate 12 of the bracket 1. The workpiece positioning plate 13 is used to limit the position of the workpiece, and the limit stopper 43 is used to limit the moving position of the connecting plate 32.

[0036] The limit stopper 43 of the utility model includes a first limit stopper 431 and a second limit stopper 432. The first limit stopper 431 is close to the top boss 22 and is used to limit the working position of the connecting plate 32; the second limit stopper 432 fixes the bracket 1 and is located on the rotational circumference of the connecting plate 32, and is used to limit the maximum rotation position of the connecting plate 32; the positioning seat 42 includes a first positioning seat 421 and a second positioning seat 422. The first positioning seat 421 is close to the top boss 22 and is used to limit the position of the supporting positioning plate 41 in the working state, thereby ensuring the position of the connecting plate 32; the second positioning seat 422 is located on the rotational circumference of the connecting plate 32, and is used to temporarily fix the maximum rotation position of the supporting positioning plate 41.

[0037] The top of the connecting plate 32 of the utility model is also provided with a tension spring 44, and the two ends of the tension spring 44 are respectively fixed to the connecting plate 32 and the bracket 1. The tension spring 44 generates a certain tension on the connecting plate 32, which is mainly used to prevent the rotation angle of the connecting plate 32 from being too large.

[0038] A third test gauge 35 is also provided between the first test gauge 33 and the second test gauge 34 of the utility model. The models of the first test gauge 33, the second test gauge 34 and the third test gauge 35 are exactly the same, and the extension length of the first test gauge 33 and the second test gauge 34 are the same. Generally, the first test gauge 33 and the second test gauge 34 respectively detect the end faces of the bearings to ensure the coaxiality, so that abnormal noise is not easy to occur during the later installation. The third test gauge 35 is used to detect the end face in the middle part, and is used to install the planetary gear later. The two can be tested independently, and the three test gauges can be tested by clamping once, which can avoid the influence of installation errors on the test results.

[0039] The chamfer angles of the bottom boss 21 and the top boss 22 of the utility model are the same, both 30-60 degrees. The inner chamfer of the differential shell is preferably 30 degrees, or 60 degrees, while the outer angle is generally 60 degrees, which is mainly used for positioning to ensure processing accuracy.

Claims

1. A differential housing vertical runout measuring device, characterized in that: It comprises a bracket, wherein the bracket is provided with a workpiece clamping portion and a workpiece detecting portion; The workpiece clamping portion comprises a bottom boss and a top boss which are arranged opposite to each other, and the top boss is connected to the bracket via a lifting mechanism; The workpiece detection part includes a support column, a first detection meter and a second detection meter, the support column is fixedly connected to the bracket, the support column is sleeved with a connecting plate, the connecting plate is provided with a plurality of adjustment holes, and the first detection meter and the second detection meter are fixedly connected to the connecting plate through the adjustment holes; The bracket is also provided with a rotation positioning mechanism, which includes a support positioning plate and a positioning seat. The support positioning plate is provided with a positioning hole, the support positioning plate is fixedly connected to the connecting plate, and a positioning ball adapted to the positioning hole is provided in the positioning seat.

2. The differential housing vertical runout measuring device according to claim 1, characterized in that: The lifting mechanism includes a lifting column and a pressure handle; the lifting column penetrates the upper plate of the bracket, a counterweight block is fixedly arranged at the upper end of the lifting column, and the top boss is fixedly arranged at the lower end, a pressure spring is clamped between the upper plate and the top boss, and the pressure spring is sleeved on the lifting column.

3. The differential housing vertical runout measuring device according to claim 2, characterized in that: The lifting mechanism is also provided with a pressure handle, which is hinged to the upper plate through a support seat, and the end of the pressure handle is provided with a toggle wheel for toggling the counterweight block.

4. The differential housing vertical runout measuring device according to claim 2, characterized in that: The central axes of the bottom boss and the top boss are colinear with the central axis of the lifting column.

5. The differential housing vertical runout measuring device according to claim 1, characterized in that: The connecting plate is also fixed with a toggle handle.

6. The differential housing vertical runout measuring device according to claim 5, characterized in that: The rotary positioning mechanism is also provided with a workpiece positioning plate and a limit stopper, and the workpiece positioning plate is fixedly arranged on the lower plate of the bracket.

7. The differential housing vertical runout measuring device according to claim 6, characterized in that: The limit stopper includes a first limit stopper and a second limit stopper, wherein the first limit stopper is close to the top boss and is used to limit the working position of the connecting plate; the second limit stopper fixes the bracket and is located on the rotation circumference of the connecting plate and is used to limit the maximum rotation position of the connecting plate; The positioning seat includes a first positioning seat and a second positioning seat. The first positioning seat is close to the top boss and is used to limit the position of the support positioning plate in the working state; the second positioning seat is located on the rotation circumference of the connecting plate and is used to temporarily fix the maximum rotation position of the support positioning plate.

8. The differential housing vertical runout measuring device according to claim 7, characterized in that: A tension spring is also provided on the top of the connecting plate, and the connecting plate and the bracket are fixedly provided at both ends of the tension spring.

9. The differential housing vertical runout measuring device according to claim 1, characterized in that: A third test gauge is provided between the first test gauge and the second test gauge. The models of the first test gauge, the second test gauge and the third test gauge are completely the same, and the extension lengths of the first test gauge and the second test gauge are the same.

10. The differential housing vertical runout measuring device according to claim 9, characterized in that: The chamfer angles of the opposite surfaces of the bottom boss and the top boss are the same, both of which are 30-60 degrees.

Images