Differential housing spherical runout testing fixture

Abstract

The utility model relates to a differential housing spherical runout testing fixture, comprising a measuring shaft which is rotatably connected with a differential housing and is provided with an installation part, the installation part comprises an installation groove and a locking threaded hole, and the locking threaded hole is communicated with the installation groove; the measuring meter comprises a mounting block which is used for being matched with the mounting groove; the positioning component is in threaded connection with the locking threaded hole, the positioning component penetrates through the locking threaded hole to abut against the mounting block, and the positioning component is used for locking and positioning the measuring meter and the measuring shaft. By rotating the measuring shaft, the measuring shaft and the differential mechanism shell rotate relatively, runout detection is carried out on the detected spherical surface, and the reading of the measuring meter is a runout value. By adopting the technical scheme of the invention, the spherical runout detection of the differential shell can be carried out on site, the reason for solving the poor spherical runout is found out by analyzing the spherical runout detection data, and the cutter sharpening of a cutter and the adjustment of a clamp are guided, so that the effect of improving the product quality is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile processing, in particular to a spherical surface runout inspection tool for a differential housing. Background Art

[0002] At present, the spherical runout of automobile differential housing is generally detected by three-coordinate equipment. The use of three-coordinate equipment to detect the spherical runout of the differential housing has the problems of high detection cost, complicated detection process, long detection cycle, low detection accuracy, and it is necessary to go to a specific detection location. There is no inspection tool on site for inspection, which is not conducive to efficiency and quality control. Utility Model Content

[0003] In view of the shortcomings of the prior art described above, the purpose of the utility model is to provide a differential housing spherical runout inspection fixture, which is used to solve the problems of high detection cost, complex detection process, long detection cycle, low detection accuracy, and the need to go to a specific detection location and no inspection fixture is available on site for inspection, which is not conducive to efficiency and quality control.

[0004] In order to achieve the above-mentioned purpose and other related purposes, the utility model provides a differential housing spherical runout inspection fixture, comprising:

[0005] A differential housing, comprising symmetrically arranged shaft holes and symmetrically arranged windows, wherein the axis of the shaft holes is perpendicular to the axis of the windows;

[0006] A measuring shaft passes through the shaft hole and is rotatably connected to the differential housing. A mounting portion is provided on the measuring shaft. The mounting portion is provided with a mounting groove extending radially through the measuring shaft. A locking threaded hole is provided radially along the measuring shaft. The locking threaded hole is connected to the mounting groove, and an axis of the locking threaded hole is perpendicular to an axis of the mounting groove.

[0007] A measuring meter, comprising a mounting block, the mounting block being used to cooperate with the mounting groove, the measuring meter being connected to the measuring shaft via the mounting block;

[0008] A positioning component is threadedly connected to the locking threaded hole, and the positioning component passes through the locking threaded hole and abuts against the mounting block. The positioning component is used to lock and position the measuring table and the measuring shaft.

[0009] Optionally, the mounting portion is provided with a mounting surface for supporting the measuring table, and the measuring table is provided with a mating surface for mating with the mounting surface.

[0010] Optionally, the mounting block is clearance-matched with the mounting groove.

[0011] Optionally, the mounting block is a "U"-shaped structure.

[0012] Optionally, the notch of the mounting slot is chamfered.

[0013] Optionally, a limiting portion is provided at one end of the measuring shaft in the axial direction, the limiting portion abuts against the differential housing, and the limiting portion is used to limit the axial position of the measuring shaft.

[0014] Optionally, the limiting portion is an annular boss arranged along the circumference of the measuring shaft, and the annular boss protrudes along the radial direction of the measuring shaft.

[0015] Optionally, at least one limiting fitting portion is circumferentially provided at one end of the limiting portion close to the differential housing along the axial direction of the measuring shaft.

[0016] Optionally, the position-limiting fitting portion is a convex portion with an arc surface, the convex portion with an arc surface protrudes along the axial direction of the measuring shaft, and a gap is formed between the position-limiting fitting portion and the measuring shaft along the radial direction.

[0017] Optionally, a handle is provided at one end of the limiting portion axially away from the measuring axis.

[0018] As described above, the utility model has the following beneficial effects: the measuring shaft is rotatably connected with the differential housing through the shaft hole, the measuring meter is placed in the differential housing through the window, the measuring meter is connected to the measuring shaft through the mounting block and the mounting groove on the measuring shaft, the head of the measuring meter is aligned with the measured spherical surface of the differential housing and the gauge is pressed after contacting, and the dial of the measuring meter is rotated to "0" when the pressing amount reaches about 0.2mm, and the positioning component is threadedly connected with the locking threaded hole and abutted with the mounting block, so that the measuring meter is positioned and installed on the measuring shaft, and after the positioning is completed, the measuring shaft is rotated to make the measuring shaft and the differential housing rotate relative to each other, so that the measured spherical surface can be tested for runout, and the reading of the measuring meter is the runout value. By adopting the technical solution of the present application, the runout detection of the spherical surface of the differential housing can be carried out on site, and at the same time, the analysis of the spherical surface runout detection data is used to find out the cause of the poor spherical surface runout, guide the sharpening of the tool and the adjustment of the fixture, so as to achieve the effect of improving product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The figure shows a schematic diagram of the assembly structure of the differential housing spherical runout inspection fixture and the differential housing shown in the embodiment of the application;

[0020] Figure 2 Display as Figure 1 Main view of the measuring axis;

[0021] Figure 3 Display as Figure 1 Top view of the measuring axis;

[0022] Figure 4 Display as Figure 1 Schematic diagram of the structure of the measurement table.

[0023] Description of Reference Numerals

[0024] Differential housing 1, shaft hole 101, window 102, measuring shaft 2, mounting portion 201, mounting groove 201a, locking threaded hole 201b, mounting surface 201c, chamfer 201d, limiting portion 202, limiting matching portion 202a, gap 202b, handle 203, measuring meter 3, mounting block 301, matching surface 302, meter head 303, dial 304, positioning component 4. DETAILED DESCRIPTION

[0025] The following is an explanation of the implementation of the present invention through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific implementations, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention.

[0026] See also Figures 1 to 4 . It should be noted that the illustrations provided in this embodiment only illustrate the basic concept of the utility model in a schematic manner, so the diagram only shows the components related to the utility model rather than being drawn according to the number, shape and size of the components during actual implementation. During actual implementation, the type, quantity and proportion of each component can be changed at will, and the component layout type may also be more complicated. The structure, proportion, size, etc. illustrated in the drawings attached to this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the restrictive conditions for the implementation of the utility model, so they have no technical substantive significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in the utility model without affecting the effect and purpose that can be achieved by the utility model. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" cited in this specification are only for the convenience of description and are not used to limit the scope of the implementation of the present utility model. Changes or adjustments to their relative relationships should be regarded as the scope of the implementation of the present utility model without substantially changing the technical content.

[0027] Before describing the embodiments of the utility model in detail, the application environment of the utility model is described first. The technology of the utility model is mainly applied to the field of automobile processing technology. The utility model is used to solve the problems of high detection cost, complex detection process, long detection cycle, low detection accuracy of the existing differential housing spherical runout detection, and the need to go to a specific detection location. There is no inspection tool on site for inspection, which is not conducive to efficiency and quality control.

[0028] Please combine Figures 1 to 4 As shown, the utility model provides a differential housing spherical runout inspection tool, comprising:

[0029] In an exemplary embodiment of the present application, the differential housing 1 includes symmetrically arranged shaft holes 101 and symmetrically arranged windows 102, wherein the axis of the shaft hole 101 is perpendicular to the axis of the window 102; the measuring shaft 2 passes through the shaft hole 101 and is rotatably connected to the differential housing 1, and a mounting portion 201 is provided on the measuring shaft 2, wherein the mounting portion 201 is provided with a mounting groove 201a extending through the radial direction of the measuring shaft 2, and the mounting portion 201 is provided with a locking threaded hole 201b extending along the radial direction of the measuring shaft 2, and the locking threaded hole 201 b is connected to the mounting groove 201a, and the axis of the locking threaded hole 201b is perpendicular to the axis of the mounting groove 201a; the measuring meter 3 includes a mounting block 301, the mounting block 301 is used to cooperate with the mounting groove 201a, and the measuring meter 3 is connected to the measuring shaft 2 through the mounting block 301; the positioning component 4, the positioning component 4 is threadedly connected to the locking threaded hole 201b, and the positioning component 4 passes through the locking threaded hole 201b and abuts against the mounting block 301, and the positioning component 4 is used to lock and position the measuring meter 3 and the measuring shaft 2.

[0030] In this embodiment, the measuring shaft 2 is rotatably connected to the differential housing 1 through the shaft hole 101, the measuring gauge 3 is placed in the differential housing 1 through the window 102, and the measuring gauge 3 is connected to the measuring shaft 2 through the mounting block 301 cooperating with the mounting groove 201a on the measuring shaft 2, the measuring gauge 3 is aligned with the measured spherical surface of the differential housing 1 and the gauge is pressed after contact, and when the pressing amount reaches about 0.2mm, the dial 304 of the measuring gauge 3 is rotated to "0", and is threadedly connected to the locking threaded hole 201b through the positioning component 4, the positioning component 4 is a bolt, and abuts against the mounting block 301, so that the measuring gauge 3 is positioned and installed on the measuring shaft 2. After the positioning is completed, the measuring shaft 2 is rotated to make the measuring shaft 2 and the differential housing 1 rotate relative to each other, so that the measured spherical surface can be tested for runout, and the reading of the measuring gauge 3 is the runout value. By adopting the technical solution of the present application, the spherical runout detection of the differential housing 1 can be carried out on-site. At the same time, by analyzing the spherical runout detection data, the cause of the poor spherical runout can be found and solved, and the tool grinding and fixture adjustment can be guided, thereby achieving the effect of improving product quality.

[0031] In an exemplary embodiment of the present application, the mounting portion 201 is provided with a mounting surface 201 c for carrying the measuring meter 3 , and the measuring meter 3 is provided with a mating surface 302 for mating with the mounting surface 201 c .

[0032] In this embodiment, the angle between the mounting surface 201c and the axis of the measuring shaft 2 is an acute angle, and the mounting surface 201c and the mating surface 302 are both planar mating. Since the angle between the mounting surface 201c and the axis of the measuring shaft 2 is an acute angle, the angle between the measuring meter 3 and the axial direction of the measuring shaft 2 is also an acute angle, that is, the measuring meter 3 is installed on the measuring shaft 2 in an inclined state. At this time, the contact portion between the meter head 303 and the measured spherical surface of the differential housing 1 is the outermost side of the measured spherical surface.

[0033] In an exemplary embodiment of the present application, the mounting block 301 is loosely matched with the mounting groove 201 a .

[0034] In this embodiment, by the clearance fit between the mounting block 301 and the mounting groove 201a, the contact position between the meter head 303 and the measured spherical surface can be adjusted by adjusting the mounting depth (or angle) of the mounting block 301 in the mounting groove 201a, that is, the locking position of the positioning component 4 and the mounting block 301, so that the inspection tool can detect the spherical surface runout at different radial positions of the measured spherical surface.

[0035] In an exemplary embodiment of the present application, the mounting block 301 is a “U”-shaped structure.

[0036] In this embodiment, the mounting block 301 adopts a “U”-shaped structure, so as to prevent the sharp corners of the mounting block 301 from scratching the measuring shaft 2 .

[0037] In an exemplary embodiment of the present application, a notch of the mounting groove 201 a is provided with a chamfer 201 d .

[0038] In this embodiment, the chamfer 201d of the mounting groove 201a is processed, and when the mounting block 301 is matched with the mounting groove 201a, the sharp corner of the mounting groove 201a scratches the mounting block 301.

[0039] In an exemplary embodiment of the present application, a limiting portion 202 is provided at one end of the measuring shaft 2 in the axial direction. The limiting portion 202 abuts against the differential housing 1 , and the limiting portion 202 is used to limit the axial position of the measuring shaft 2 .

[0040] In this embodiment, the limiting portion 202 cooperates with the differential housing 1 to limit the position of the mounting portion 201 of the measuring shaft 2 inside the differential housing 1, and can prevent the measuring shaft 2 from axially moving with the differential housing 1 during rotation, thereby affecting the measurement accuracy of the measuring meter 3.

[0041] In an exemplary embodiment of the present application, the limiting portion 202 is an annular boss arranged along the circumference of the measuring shaft 2 , and the annular boss protrudes along the radial direction of the measuring shaft 2 .

[0042] In this embodiment, the diameter of the limiting portion 202 is greater than the diameter of the measuring shaft 2 .

[0043] In an exemplary embodiment of the present application, at least one limiting fitting portion 202 a is circumferentially provided at one end of the limiting portion 202 close to the differential housing 1 along the axial direction of the measuring shaft 2 .

[0044] In this embodiment, at least one limit fitting portion 202a is circumferentially arranged at one end of the limit portion 202 close to the differential housing 1 along the axial direction of the measuring shaft 2, so as to effectively reduce the contact area between the limit portion 202 and the differential housing 1, thereby reducing the friction force during the relative rotation between the measuring shaft 2 and the differential housing 1.

[0045] In an exemplary embodiment of the present application, the position-limiting fitting portion 202 a is a convex curved surface portion, which protrudes along the axial direction of the measuring shaft 2 , and a gap 202 b is defined between the position-limiting fitting portion 202 a and the measuring shaft 2 in the radial direction.

[0046] In this embodiment, the limiting fitting portion 202a adopts an arc-shaped semi-arc surface convex portion, which further reduces the contact area between the limiting portion 202 and the differential housing 1 without affecting the limiting function, compared with the flat contact using a rectangular surface. The gap 202b is used to eliminate the influence of burrs at the entrance of the shaft hole 101 on the axial positioning of the measuring shaft 2, thereby improving the positioning accuracy.

[0047] In an exemplary embodiment of the present application, a handle 203 is provided at one end of the limiting portion 202 axially away from the measuring shaft 2 .

[0048] In this embodiment, the operator can use the handle 203 to make the measuring shaft 2 and the differential case 1 rotate relative to each other.

[0049] Working principle: the measuring shaft 2 is rotatably connected to the differential housing 1 through the shaft hole 101, the measuring gauge 3 is placed in the differential housing 1 through the window 102, and the measuring gauge 3 is connected to the measuring shaft 2 through the mounting block 301 and the mounting groove 201a on the measuring shaft 2. The gauge head 303 of the measuring gauge 3 is aligned with the measured spherical surface of the differential housing 1 and the gauge is pressed after contact. When the pressing amount reaches about 0.2mm, the dial 304 of the measuring gauge 3 is rotated to "0", and the locking threaded hole 201b is threadedly connected through the positioning component 4, and abutted against the mounting block 301, so that the measuring gauge 3 is positioned and installed on the measuring shaft 2. After the positioning is completed, the measuring shaft 2 is rotated to make the measuring shaft 2 and the differential housing 1 rotate relative to each other, so that the measured spherical surface can be tested for runout, and the reading of the measuring gauge 3 is the runout value. By adopting the technical solution of the present application, the spherical runout detection of the differential housing 1 can be carried out on-site. At the same time, by analyzing the spherical runout detection data, the cause of the poor spherical runout can be found and solved, and the tool grinding and fixture adjustment can be guided, thereby achieving the effect of improving product quality.

[0050] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed in the present invention shall still be covered by the claims of the present invention.

Claims

1. A differential housing spherical runout tester, characterized in that: include: A differential housing, comprising symmetrically arranged shaft holes and symmetrically arranged windows, wherein the axis of the shaft holes is perpendicular to the axis of the windows; A measuring shaft passes through the shaft hole and is rotatably connected to the differential housing. A mounting portion is provided on the measuring shaft. The mounting portion is provided with a mounting groove extending radially through the measuring shaft. A locking threaded hole is provided radially along the measuring shaft. The locking threaded hole is connected to the mounting groove, and an axis of the locking threaded hole is perpendicular to an axis of the mounting groove. A measuring meter, comprising a mounting block, the mounting block being used to cooperate with the mounting groove, the measuring meter being connected to the measuring shaft via the mounting block; A positioning component is threadedly connected to the locking threaded hole, and the positioning component passes through the locking threaded hole and abuts against the mounting block. The positioning component is used to lock and position the measuring table and the measuring shaft.

2. The differential housing spherical runout test fixture according to claim 1, characterized in that: The mounting portion is provided with a mounting surface for carrying the measuring meter, and the measuring meter is provided with a matching surface for matching with the mounting surface.

3. The differential housing spherical runout test fixture according to claim 2, characterized in that: The mounting block is loosely matched with the mounting groove.

4. The differential housing spherical runout test fixture according to claim 3, characterized in that: The mounting block is a "U" shaped structure.

5. The differential housing spherical runout test fixture according to claim 4, characterized in that: The notch of the installation slot is provided with a chamfer.

6. The differential housing spherical runout test fixture according to claim 1, characterized in that: A limiting portion is provided at one end of the measuring shaft in the axial direction, the limiting portion abuts against the differential housing, and the limiting portion is used to limit the axial position of the measuring shaft.

7. The differential housing spherical runout test fixture according to claim 6, characterized in that: The limiting portion is an annular boss arranged along the circumference of the measuring shaft, and the annular boss protrudes along the radial direction of the measuring shaft.

8. The differential housing spherical runout test fixture according to claim 7, characterized in that: At least one limiting matching portion is circumferentially provided at one end of the limiting portion close to the differential housing along the axial direction of the measuring shaft.

9. The differential housing spherical runout test fixture according to claim 8, characterized in that: The position-limiting fitting portion is a convex portion with an arc surface, and the convex portion with an arc surface protrudes along the axial direction of the measuring shaft. There is a gap between the position-limiting fitting portion and the measuring shaft along the radial direction.

10. The differential housing spherical runout test fixture according to claim 9, characterized in that: A handle is provided at one end of the limiting portion axially away from the measuring shaft.

Images