Relative position degree testing fixture

Abstract

The utility model relates to a relative position degree gauge, which comprises a reference block, a central positioning column, a detection pin, a handle and a screw, the center of the reference block is provided with a central positioning hole, the periphery of the central positioning hole is provided with first threaded holes and detection pin positioning holes, and the lower surface of the reference block is a positioning surface. A guide part extends upwards from the middle of the central positioning column, a columnar handle mounting hole is formed in the guide part, positioning parts are arranged on the two sides of the central positioning column, the upper surfaces of the positioning parts are mounting surfaces, and second threaded holes are formed in the positioning parts; the guide part is adaptively mounted in the central positioning hole, the positioning surface is tightly attached to the mounting surface, the screw penetrates through the first threaded hole and the second threaded hole to be fixed, and the detection pin is fixed in the detection pin positioning hole; and the handle is mounted in the handle mounting hole. When the tool is used, the relative position degree of a HUB bolt mounting hole of a workpiece relative to a central hole of the workpiece and a flange surface can be rapidly detected; meanwhile, the device has the characteristics of simple structure, high detection precision, convenience in use, low manufacturing cost and the like.

Description

Technical Field

[0001] The utility model relates to a kind of inspection tool, specifically a relative position degree inspection tool. Background Art

[0002] It is very important to detect the relative position relationship between the HUB bolt mounting hole, the flange surface and the center hole of the knuckle product. It is necessary to ensure that the relative position relationship is qualified to normally install the hub, bearing and knuckle, and ensure the normal operation of the functions of the parts. Otherwise, it is easy to cause abnormal noises and even safety accidents such as bearing detachment. Since the detection frequency requirement for the relative position relationship between the HUB bolt mounting hole, the flange surface and the center hole is relatively high, and the coordinate measuring machine has a slow detection beat, it cannot meet the on-site high-frequency detection requirements. Therefore, a simple and convenient-to-use inspection tool is needed to achieve the detection. Summary of the Invention

[0003] The purpose of the utility model is to provide a relative position degree inspection tool, which can quickly detect whether the relative position relationship between the HUB bolt mounting hole, the flange surface and the center hole is qualified.

[0004] In order to achieve the above purpose, the technical solution of the utility model is:

[0005] A relative position degree inspection tool includes a reference block, a center positioning column, a detection pin, a handle and a screw;

[0006] A center positioning hole is arranged at the center of the reference block. A first threaded hole and a detection pin positioning hole are arranged around the center positioning hole. The lower surface of the reference block is a positioning surface;

[0007] A guiding part protrudes upward in the middle of the center positioning column. A columnar handle mounting hole is formed inside the guiding part. The two sides of the center positioning column are positioning parts. The upper surface of the positioning part is an installation surface. A second threaded hole is arranged on the positioning part;

[0008] The guiding part is adaptively installed in the center positioning hole. The positioning surface is closely attached to the installation surface. The screw passes through the first threaded hole and the second threaded hole for fixing. The detection pin is fixed in the detection pin positioning hole;

[0009] The handle is installed in the handle mounting hole.

[0010] Preferably, the detection pin includes a guiding section and a detection part. The guiding section is fixed in the detection pin positioning hole; the guiding section and the detection part are integrally processed, and their coaxiality is 0.005 mm; the diameter of the detection part is D1, and the nominal value is equal to the maximum material size of the to-be-inspected HUB bolt mounting hole minus the relative position degree X, and the manufacturing tolerance is.

[0011] Preferably, the guiding part is in interference fit with the central positioning hole with an interference amount of 0.01 mm, so that the central positioning column and the reference block are assembled together, and the fitting clearance between the mounting surface and the positioning surface does not exceed 0.1 mm; the guiding section is in interference fit with the detection pin positioning hole with an interference amount of 0.01 mm, so that the detection pin and the reference block are assembled together; the first threaded hole in the reference block is aligned with the second threaded hole in the central positioning column and is connected by screws.

[0012] Preferably, the flatness of the mounting surface is 0.005 mm; the diameter of the positioning part is D, and the nominal value is equal to the maximum material size of the central hole, and the manufacturing tolerance is (0, -0.01).

[0013] Preferably, the flatness of the positioning surface is 0.005 mm; the perpendicularity of the central positioning hole and the detection pin positioning hole with respect to the positioning surface is 0.005 mm.

[0014] Preferably, the relative distances between the detection pin positioning holes and the central positioning hole are H1, H2, H3, H4, H5, H6, H7, H8 in sequence, where H1 = L1, H2 = L2, H3 = L3, H4 = L4, H5 = L5, H6 = L6, H7 = L7, H8 = L8, and the manufacturing tolerance is ±0.01 mm.

[0015] Preferably, the guiding part and the positioning part are integrally processed, and their coaxiality is 0.005 mm.

[0016] During use, the utility model can quickly detect the relative position degree of the HUB bolt mounting hole of the workpiece with respect to the central hole and the flange surface of the workpiece; meanwhile, it has the characteristics of simple structure, high detection accuracy, convenient use, and low manufacturing cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0018] Figure 1 It is the A-A cross-sectional view of a relative position degree detector of the utility model.

[0019] Figure 2 It is the top view of a relative position degree detector of the utility model.

[0020] Figure 3 It is the B-B cross-sectional view of the reference block of a relative position degree detector of the utility model.

[0021] Figure 4It is the top view of the reference block of a relative position degree gauge of the present utility model.

[0022] Figure 5 It is the C-C sectional view of the center positioning post of a relative position degree gauge of the present utility model.

[0023] Figure 6 It is the top view of the center positioning post of a relative position degree gauge of the present utility model.

[0024] Figure 7 It is the front view of the detection pin of a relative position degree gauge of the present utility model.

[0025] In the figure, 1 - reference block, 2 - center positioning post, 3 - detection pin, 4 - handle; 5 - screw, 11 - positioning surface, 12 - center positioning hole, 13 - detection pin positioning hole, 14 - first threaded hole, 21 - handle mounting hole, 22 - guiding part, 23 - mounting surface, 24 - positioning part, 25 - second threaded hole, 31 - guiding part, 32 - detection part. Specific embodiments

[0026] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are some but not all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0027] See Figure 1-7 , a relative position degree gauge of the present application includes a reference block 1, a center positioning post 2, a detection pin 3, a handle 4 and a screw 5;

[0028] A center positioning hole 12 is provided in the center of the reference block 1, and a first threaded hole 14 and a detection pin positioning hole 13 are provided around the center positioning hole 12. The lower surface of the reference block 1 is a positioning surface 11;

[0029] A guiding part 22 extends upward in the middle of the center positioning post 2. A columnar handle mounting hole 21 is formed inside the guiding part 22. The two sides of the center positioning post 2 are positioning parts 24. The upper surface of the positioning part 24 is a mounting surface 23, and a second threaded hole 25 is provided on the positioning part 24;

[0030] The guiding part 22 is adaptively installed in the center positioning hole 12. The positioning surface 11 is closely attached to the mounting surface 23. The screw 5 passes through the first threaded hole 14 and the second threaded hole 25 for fixation. The detection pin 3 is fixed in the detection pin positioning hole 13;

[0031] The handle 4 is installed in the handle mounting hole 21.

[0032] In the embodiment of the present application, the flatness requirement of the positioning surface 11 is 0.005 mm; the perpendicularity requirements of the central positioning hole 12 and the inspection pin positioning hole 13 relative to the positioning surface 11 are 0.005 mm; the relative distances between the inspection pin positioning hole 13 and the central positioning hole 12 are H1, H2, H3, H4, H5, H6, H7, and H8 in sequence, where H1 = L1, H2 = L2, H3 = L3, H4 = L4, H5 = L5, H6 = L6, H7 = L7, H8 = L8, and the manufacturing tolerance is ±0.01 mm.

[0033] In the embodiment of the present application, the guiding portion 22 and the positioning portion 24 are integrally machined, and their coaxiality is 0.005 mm; the flatness requirement of the mounting surface 23 is 0.005 mm; the diameter of the positioning portion 24 is D, and the nominal value is equal to the maximum material size of the central hole, and the manufacturing tolerance is (0, -0.01).

[0034] In the embodiment of the present application, the guiding section 31 and the inspection portion 32 are integrally machined, and their coaxiality is 0.005 mm; the diameter of the inspection portion 32 is D1, and the nominal value is equal to the maximum material size of the HUB bolt mounting hole minus the relative positional tolerance X, and the manufacturing tolerance is (0, +0.01).

[0035] In the embodiment of the present application, the guiding portion 22 and the central positioning hole 12 are in interference fit with an interference amount of 0.01 mm, so that the central positioning post 2 and the reference block 1 are assembled together, and the mounting surface 23 and the positioning surface 11 are in contact with a gap not exceeding 0.1 mm; the guiding section 31 and the inspection pin positioning hole 13 are in interference fit with an interference amount of 0.01 mm, so that the inspection pin 3 and the reference block 1 are assembled together; the positions of the first threaded hole 14 in the reference block 1 and the second threaded hole 25 in the central positioning post 2 should be aligned and can be fixed by screw connection; the handle mounting hole 21 is for mounting the handle 4.

[0036] During use, the central positioning post is inserted into the central hole of the workpiece to be measured, and the relative positional tolerance gauge is manually rotated to adjust the inspection pin to align with the HUB bolt mounting hole of the workpiece to be measured. If the inspection pin can be completely inserted into the HUB bolt mounting hole and the positioning surface of the reference block is completely in contact with the flange surface of the workpiece, the positional tolerance of the HUB bolt mounting hole is qualified; if the inspection pin cannot be completely inserted into the HUB bolt mounting hole or the positioning surface of the reference block is not completely in contact with the flange surface of the workpiece, the positional tolerance of the HUB bolt mounting hole is unqualified.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A relative position measuring tool, characterized in that: It comprises a reference block (1), a center positioning column (2), a detection pin (3), a handle (4) and a screw (5); A central positioning hole (12) is arranged at the center of the reference block (1), a first threaded hole (14) and a detection pin positioning hole (13) are arranged around the central positioning hole (12), and the lower surface of the reference block (1) is a positioning surface (11); A guide portion (22) extends upward from the middle of the center positioning column (2), a columnar handle mounting hole (21) is formed inside the guide portion (22), two sides of the center positioning column (2) are positioning portions (24), the upper surface of the positioning portion (24) is a mounting surface (23), and a second threaded hole (25) is provided on the positioning portion (24); The guide portion (22) is adapted to be installed in the central positioning hole (12), the positioning surface (11) is tightly fitted with the mounting surface (23), the screw (5) passes through the first threaded hole (14) and the second threaded hole (25) to be fixed, and the detection pin (3) is fixed in the detection pin positioning hole (13); The handle (4) is installed in the handle installation hole (21).

2. A relative position measuring tool according to claim 1, characterized in that: The detection pin (3) comprises a guide section (31) and a detection portion (32), wherein the guide section (31) is fixed in the detection pin positioning hole (13); the guide section (31) and the detection portion (32) are processed as one piece, and the coaxiality of the two is 0.005 mm; the diameter of the detection portion (32) is D1, and the nominal value is equal to the maximum physical size of the HUB bolt mounting hole to be detected minus the relative position X, and the manufacturing tolerance is (0, +0.01).

3. A relative position measuring tool according to claim 2, characterized in that: The guide portion (22) is interference-fitted with the center positioning hole (12), and the interference amount is 0.01 mm, so that the center positioning column (2) and the reference block (1) are assembled together, and the fitting clearance between the mounting surface (23) and the positioning surface (11) does not exceed 0.1 mm; the guide section (31) is interference-fitted with the detection pin positioning hole (13), and the interference amount is 0.01 mm, so that the detection pin (3) and the reference block (1) are assembled together; the first threaded hole (14) in the reference block (1) is aligned with the second threaded hole (25) in the center positioning column (2), and are connected by a screw (5).

4. A relative position measuring tool according to claim 1, characterized in that: The flatness of the mounting surface (23) is 0.005 mm; the diameter of the positioning portion (24) is D, the nominal value is equal to the maximum physical size of the center hole, and the manufacturing tolerance is (0, -0.01).

5. A relative position measuring tool according to claim 1, characterized in that: The flatness of the positioning surface (11) is 0.005 mm; the verticality of the central positioning hole (12) and the detection pin positioning hole (13) relative to the positioning surface (11) is 0.005 mm.

6. A relative position measuring tool according to claim 1, characterized in that: The relative distances between the detection pin positioning hole (13) and the center positioning hole (12) are H1, H2, H3, H4, H5, H6, H7, and H8, respectively, wherein H1=L1, H2=L2, H3=L3, H4=L4, H5=L5, H6=L6, H7=L7, and H8=L8, and the manufacturing tolerance is ±0.01 mm.

7. A relative position measuring tool according to claim 1, characterized in that: The guide portion (22) and the positioning portion (24) are processed as one piece, and the coaxiality between the two is 0.005 mm.

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