Wall thickness measuring jig

Abstract

The utility model relates to the technical field of measuring jigs, and discloses a wall thickness measuring jig, which comprises a first positioning seat suitable for positioning a product to be measured; the second positioning seat is fixedly arranged on one side of the first positioning seat in the length direction; the first positioning block is fixedly arranged on the first positioning seat, and the side, close to the second positioning seat in the length direction, of the first positioning block is suitable for abutting against a machining face on the inner side wall of the to-be-detected product so as to position the to-be-detected product in the length direction; the height gauge is arranged on the second positioning seat and comprises a measuring shaft, and one end, close to the first positioning seat in the length direction, of the measuring shaft is suitable for abutting against the first positioning block and / or the outer side wall of the to-be-measured product. The wall thickness measuring jig provided by the utility model not only improves the accuracy of dimension measurement, but also greatly shortens the measurement time of the processing wall thickness of the product to be measured, so that the dimension processing problem of a machine table can be found and identified in time.

Description

Technical Field

[0001] The utility model relates to the technical field of measuring jigs, in particular to a wall thickness measuring jig. Background Art

[0002] The wall thickness of infrared lamps for electronic products is a CNC (Computerised Numerical Control Machine) processing dimension, which is an important dimension for controlling the convexity and concavity of infrared lamps. The existing on-site management of the wall thickness of infrared lamps usually uses 2.5-dimensional measurement to feedback the measured dimensions. On the one hand, since 2.5-dimensional measurement requires projection every time, the measurement time is long and the dimensional processing problems of the machine cannot be discovered and identified in time. On the other hand, the dimensional accuracy obtained by projection measurement is low. Utility Model Content

[0003] In view of this, the utility model provides a wall thickness measuring fixture to solve the problems that the existing method of measuring dimensions through 2.5-dimensional measurement feedback has a long measurement time, cannot timely discover and identify the dimensional processing problems of the machine, and has low dimensional accuracy.

[0004] The utility model provides a wall thickness measuring jig, comprising:

[0005] The first positioning seat is suitable for positioning the product to be tested;

[0006] A second positioning seat, fixedly arranged on one side of the length direction of the first positioning seat;

[0007] A first positioning block is fixedly disposed on the first positioning seat, and a side of the first positioning block close to the second positioning seat along the length direction is suitable for abutting against a processing surface on the inner side wall of the product to be tested, so as to position the product to be tested along the length direction;

[0008] The height gauge is arranged on the second positioning seat, and comprises a measuring axis, wherein one end of the measuring axis close to the first positioning seat along the length direction is suitable for abutting against the first positioning block and / or the outer side wall of the product to be measured.

[0009] Beneficial effects: The wall thickness measuring jig provided by the utility model positions the product to be measured by setting a first positioning seat; positions and fixes the height gauge by setting a second positioning seat; positions the product to be measured along the length direction by fixing the first positioning block on the first positioning seat; before measuring the product to be measured, firstly abut the measuring axis of the height gauge against the first positioning block, then reset the height gauge, and then retract the measuring axis of the height gauge. After the product to be measured is placed on the first positioning seat, first abut the side of the first positioning block close to the second positioning seat along the length direction against the machining surface on the inner wall of the product to be measured, and then abut the measuring axis of the height gauge against the outer wall of the product to be measured. At this time, the reading of the height gauge is the machining wall thickness of the product to be measured. Compared with the 2.5-dimensional measurement method in the related art, it not only improves the accuracy of the measured size, but also greatly shortens the measurement time of the machining wall thickness of the product to be measured, so that the size machining problems of the machine can be discovered and identified in time.

[0010] In an optional embodiment, the wall thickness measuring jig further includes a plurality of positioning columns, which are respectively arranged on both sides of the first positioning seat in the width direction, and the positioning columns are suitable for positioning the product to be measured in the width direction.

[0011] Beneficial effect: By arranging positioning columns on both sides of the first positioning seat in the width direction, the product to be tested can be positioned, thereby avoiding the product to be tested from being offset in the width direction, and avoiding the product to be tested from being deflected on the first positioning seat, so that the product to be tested can only move in a straight line along the length direction on the first positioning seat, so that the side of the first positioning block close to the second positioning seat along the length direction is completely in contact with the machined surface on the inner wall of the product to be tested, which is beneficial to improving the measurement accuracy.

[0012] In an optional implementation, the positioning column is clearance-matched with the product to be tested.

[0013] Beneficial effect: The positioning column and the product to be tested are clearance-matched along the width direction, thereby avoiding friction between the positioning column and the product to be tested, and preventing the positioning column from causing wear to the product to be tested during the movement of the product to be tested.

[0014] In an optional embodiment, the wall thickness measuring jig further includes a plurality of second positioning blocks, the second positioning blocks are bolted to the first positioning seats, and the second positioning blocks are suitable for positioning the positioning columns;

[0015] First positioning grooves are provided on both sides of the first positioning seat in the width direction, and the first positioning grooves are suitable for pre-positioning the second positioning block.

[0016] Beneficial effect: By opening a first positioning groove on the first positioning seat, the second positioning block is pre-positioned to facilitate the installation of the second positioning block on the first positioning seat, while preventing the second positioning block from deflecting on the first positioning seat; the second positioning block is connected to the first positioning seat by bolts, thereby achieving positioning and fixation between the second positioning block and the first positioning seat, and further achieving positioning of the positioning column on the first positioning seat.

[0017] In an optional embodiment, a first through hole is opened on the second positioning block; a first positioning hole is opened on the wall surface on one side along the height direction in the first positioning groove, the first positioning hole is coaxially arranged with the first through hole, and the first positioning hole is suitable for positioning the second positioning block.

[0018] Beneficial effect: During the assembly process, the second positioning block is first pre-positioned through the first positioning groove, and the first through hole is aligned with the first positioning hole, and then the bolt is passed through the first through hole and threadedly connected to the first positioning hole, thereby completing the positioning and fixation of the second positioning block, and then realizing the positioning of the positioning column on the first positioning seat.

[0019] In an optional embodiment, the second positioning seat includes a first fixed block and a second fixed block, one side of the first fixed block in the length direction is bolted to the first positioning seat, and the second fixed block is bolted to the first fixed block, and the second fixed block and the first fixed block are suitable for positioning and fixing the height gauge.

[0020] Beneficial effect: By fixing the first fixing block on the first positioning seat, the height gauge is positioned and fixed together with the second fixing block, so that the measuring axis of the height gauge can abut against the first positioning block.

[0021] In an optional embodiment, a second positioning groove is formed on one side of the first positioning seat close to the first fixing block along the length direction, and the second positioning groove is suitable for pre-positioning the first fixing block.

[0022] Beneficial effect: By opening a second positioning groove on the first positioning seat, the first fixed block is pre-positioned to facilitate the installation of the first fixed block on the first positioning seat, while preventing the first fixed block from deflecting on the first positioning seat. The first fixed block is connected to the first positioning seat by bolts, thereby achieving positioning and fixation between the first fixed block and the first positioning seat, and then the height gauge is positioned and fixed together with the first fixed block by the second fixed block, thereby achieving positioning between the height gauge and the first positioning seat.

[0023] In an optional embodiment, a second through hole is opened on the first fixed block; a second positioning hole is opened on the wall surface on one side along the length direction of the second positioning groove, the second positioning hole is coaxially arranged with the second through hole, and the second positioning hole is suitable for positioning the first fixed block.

[0024] Beneficial effect: During the assembly process, the first fixing block is first pre-positioned through the second positioning groove, and the second through hole is aligned one by one with the second positioning hole, and then the bolt is passed through the second through hole and threadedly connected with the second positioning hole, thereby completing the positioning and fixation of the first fixing block.

[0025] In an optional embodiment, a positioning arc groove is formed on the first fixing block and the second fixing block, the central axis of the positioning arc groove coincides with the central axis of the measuring shaft, and the first positioning block is located on the extension line of the central axis of the measuring shaft.

[0026] Beneficial effect: By opening a positioning arc groove on the first fixed block and the second fixed block, the height gauge and its measuring axis can be positioned through the positioning arc groove during the process of bolting the second fixed block to the first fixed block. When the second fixed block and the first fixed block are fixed, the second fixed block and the first fixed block can clamp and fix the height gauge so that the central axis of the measuring axis passes through the first positioning block.

[0027] In an optional embodiment, the wall thickness measuring jig further includes a plurality of third positioning blocks, which are fixedly disposed on the upper surface of the first positioning seat, and the third positioning blocks are suitable for positioning the product to be measured in the height direction.

[0028] Beneficial effect: The third positioning block abuts against one side of the product to be measured in the height direction, thereby positioning the product to be measured in the height direction to prevent the outer side wall of the product to be measured from being lower than the height of the measuring axis. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0030] Figure 1 A schematic diagram of the three-dimensional structure of a wall thickness measuring jig according to an embodiment of the utility model;

[0031] Figure 2 A schematic diagram of the top view of a wall thickness measuring jig according to an embodiment of the utility model;

[0032] Figure 3 A schematic diagram of the three-dimensional structure of a wall thickness measuring jig for measuring a product to be measured according to an embodiment of the utility model;

[0033] Figure 4A schematic diagram of a top view of a wall thickness measuring jig for measuring a product to be measured according to an embodiment of the utility model;

[0034] Figure 5 It is a schematic diagram of the three-dimensional structure of the product to be tested;

[0035] Figure 6 for Figure 5 A partial enlarged view of the P in the middle;

[0036] Figure 7 The figure is a schematic diagram of the exploded structure of a wall thickness measuring jig according to an embodiment of the utility model.

[0037] Description of reference numerals:

[0038] 10. first positioning seat; 101. first positioning groove; 102. first positioning hole; 103. second positioning groove; 104. second positioning hole; 11. first positioning block; 12. positioning column; 13. second positioning block; 131. first through hole; 14. third positioning block;

[0039] 20, second positioning seat; 201, positioning arc groove; 21, first fixing block; 211, second through hole; 22, second fixing block;

[0040] 30. Height gauge; 31. Measuring axis;

[0041] 40. Product to be tested; 41. Processing surface. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0043] Combine the following Figures 1 to 7 , describing an embodiment of the utility model.

[0044] According to an embodiment of the utility model, a wall thickness measuring jig is provided, comprising:

[0045] The first positioning seat 10 is suitable for positioning the product 40 to be tested;

[0046] The second positioning seat 20 is fixedly disposed on one side of the first positioning seat 10 in the length direction;

[0047] A first positioning block 11 is fixedly disposed on the first positioning seat 10. A side of the first positioning block 11 close to the second positioning seat 20 along the length direction is suitable for abutting against a processing surface 41 on the inner side wall of the product to be tested 40, so as to position the product to be tested 40 along the length direction;

[0048] The height gauge 30 is disposed on the second positioning seat 20 and includes a measuring axis 31 . One end of the measuring axis 31 close to the first positioning seat 10 along the length direction is suitable for abutting against the outer side wall of the first positioning block 11 and / or the product to be measured 40 .

[0049] It should be noted that please combine Figure 5 and Figure 6 As shown, the processing surface 41 is located on the inner wall of the product 40 to be tested, and the processing surface 41 is the CNC processing infrared lamp wall thickness position.

[0050] Optionally, the height gauge 30 is a digital height gauge, so as to quickly measure and display the processing dimensions of the product 40 to be measured on site.

[0051] The wall thickness measuring jig provided in this embodiment positions the product 40 to be measured by setting a first positioning seat 10; positions and fixes the height gauge 30 by setting a second positioning seat 20; positions the product 40 to be measured along the length direction by fixing a first positioning block 11 on the first positioning seat 10; before measuring the product 40 to be measured, firstly, the measuring axis 31 of the height gauge 30 is brought into contact with the first positioning block 11, and then the height gauge 30 is reset, and then the measuring axis 31 of the height gauge 30 is retracted, and when the product 40 to be measured is placed on After the first positioning seat 10 is placed, the first positioning block 11 is firstly abutted against the machined surface 41 on the inner wall of the product 40 to be measured on one side close to the second positioning seat 20 along the length direction, and then the measuring axis 31 of the height gauge 30 is abutted against the outer wall of the product 40 to be measured. At this time, the reading of the height gauge 30 is the machined wall thickness of the product 40 to be measured. Compared with the 2.5-dimensional measurement method in the related art, it not only improves the accuracy of the measured dimension, but also greatly shortens the measurement time of the machined wall thickness of the product 40 to be measured, so that the dimensional processing problems of the machine can be discovered and identified in time.

[0052] In some embodiments, please combine Figure 1 and Figure 2 As shown, the wall thickness measuring jig further includes a plurality of positioning posts 12 , which are respectively disposed on both sides of the first positioning seat 10 in the width direction, and the positioning posts 12 are suitable for positioning the product 40 to be measured in the width direction.

[0053] Optionally, two positioning posts 12 are provided on each side of the first positioning seat 10 in the width direction, and the two positioning posts 12 are spaced apart in the length direction.

[0054] In this embodiment, positioning columns 12 are provided on both sides of the first positioning seat 10 in the width direction to position the product 40 to be tested, thereby preventing the product 40 to be tested from being offset in the width direction and preventing the product 40 to be tested from being deflected on the first positioning seat 10, so that the product 40 to be tested can only move in a straight line along the length direction on the first positioning seat 10, so that the side of the first positioning block 11 close to the second positioning seat 20 along the length direction is completely in contact with the machined surface 41 on the inner side wall of the product 40 to be tested, which is beneficial to improving the measurement accuracy.

[0055] In some embodiments, please combine Figure 3 and Figure 4 As shown, the positioning column 12 is a column structure, so that while positioning the product 40 to be tested, the contact area with the product 40 to be tested is reduced, thereby reducing the friction between the positioning column 12 and the product 40 to be tested; the positioning column 12 and the product 40 to be tested are clearance-matched.

[0056] In this embodiment, the positioning post 12 and the product 40 to be tested are clearance-matched along the width direction, thereby avoiding friction between the positioning post 12 and the product 40 to be tested, and preventing the positioning post 12 from causing wear to the product 40 to be tested during movement of the product 40 to be tested.

[0057] In some embodiments, please combine Figure 1 and Figure 2 As shown, the wall thickness measuring jig further includes a plurality of second positioning blocks 13, the second positioning blocks 13 are bolted to the first positioning seat 10, and the second positioning blocks 13 are suitable for positioning the positioning column 12;

[0058] Please combine Figure 7 As shown, first positioning grooves 101 are provided on both sides of the first positioning seat 10 in the width direction, and the first positioning grooves 101 are suitable for pre-positioning the second positioning block 13 .

[0059] Furthermore, a pin hole (not shown in the figure) corresponding to the positioning column 12 is formed on the second positioning block 13 , and the positioning column 12 is inserted into the pin hole on the second positioning block 13 .

[0060] In this embodiment, a first positioning groove 101 is opened on the first positioning seat 10 to pre-position the second positioning block 13, so as to facilitate the installation of the second positioning block 13 on the first positioning seat 10 and prevent the second positioning block 13 from deflecting on the first positioning seat 10; the second positioning block 13 is connected to the first positioning seat 10 by bolts, so as to achieve positioning and fixation between the second positioning block 13 and the first positioning seat 10, thereby achieving positioning of the positioning column 12 on the first positioning seat 10.

[0061] In some embodiments, see Figure 7 As shown, the second positioning block 13 is provided with a first through hole 131; see Figure 7 As shown, a first positioning hole 102 is opened on a wall surface on one side along the height direction in the first positioning groove 101 . The first positioning hole 102 is coaxially arranged with the first through hole 131 . The first positioning hole 102 is suitable for positioning the second positioning block 13 .

[0062] During the assembly process, the second positioning block 13 is first pre-positioned through the first positioning groove 101, and the first through hole 131 is aligned with the first positioning hole 102, and then the bolt is passed through the first through hole 131 and threadedly connected to the first positioning hole 102, thereby completing the positioning and fixation of the second positioning block 13, and then realizing the positioning of the positioning column 12 on the first positioning seat 10.

[0063] In some embodiments, see Figure 7 As shown, the second positioning seat 20 includes a first fixing block 21 and a second fixing block 22. One side of the first fixing block 21 in the length direction is bolted to the first positioning seat 10, and the second fixing block 22 is bolted to the first fixing block 21. The second fixing block 22 and the first fixing block 21 are suitable for positioning and fixing the height gauge 30.

[0064] In this embodiment, the first fixing block 21 is fixedly set on the first positioning seat 10, and the height gauge 30 is positioned and fixed together with the second fixing block 22 and the first fixing block 21, so that the measuring axis 31 of the height gauge 30 can abut against the first positioning block 11.

[0065] In some embodiments, see Figure 7 As shown, a second positioning groove 103 is formed on one side of the first positioning seat 10 close to the first fixing block 21 along the length direction, and the second positioning groove 103 is suitable for pre-positioning the first fixing block 21 .

[0066] In this embodiment, a second positioning groove 103 is opened on the first positioning seat 10 to pre-position the first fixing block 21, so as to facilitate the installation of the first fixing block 21 on the first positioning seat 10 and prevent the first fixing block 21 from deflecting on the first positioning seat 10. The first fixing block 21 is connected to the first positioning seat 10 by bolts, so as to achieve positioning and fixation between the first fixing block 21 and the first positioning seat 10, and then the second fixing block 22 and the first fixing block 21 are used to jointly position and fix the height gauge 30, thereby achieving positioning between the height gauge 30 and the first positioning seat 10.

[0067] In some embodiments, see Figure 7 As shown, the first fixing block 21 is provided with a second through hole 211; see Figure 7As shown, a second positioning hole 104 is opened on a wall surface on one side along the length direction of the second positioning groove 103 . The second positioning hole 104 is coaxially arranged with the second through hole 211 . The second positioning hole 104 is suitable for positioning the first fixing block 21 .

[0068] Optionally, the number of the second positioning holes 104 is two, and the two second positioning holes 104 are spaced apart along the width direction.

[0069] During the assembly process, the first fixing block 21 is first pre-positioned through the second positioning groove 103, and the second through hole 211 is aligned with the second positioning hole 104 one by one, and then the bolt is passed through the second through hole 211 and threadedly connected to the second positioning hole 104, thereby completing the positioning and fixation of the first fixing block 21.

[0070] In some embodiments, see Figure 7 As shown, the first fixing block 21 and the second fixing block 22 are both provided with a positioning arc groove 201. Figure 2 As shown, the central axis of the positioning arc groove 201 coincides with the central axis of the measuring axis 31 , and the first positioning block 11 is located on the extension line of the central axis of the measuring axis 31 .

[0071] In this embodiment, by opening a positioning arc groove 201 on the first fixed block 21 and the second fixed block 22, the height gauge 30 and its measuring axis 31 are positioned through the positioning arc groove 201 during the process of bolting the second fixed block 22 to the first fixed block 21. When the second fixed block 22 and the first fixed block 21 are fixed, the second fixed block 22 and the first fixed block 21 can clamp and fix the height gauge 30, so that the central axis of the measuring axis 31 passes through the first positioning block 11.

[0072] In some embodiments, see Figure 2 As shown, the wall thickness measuring jig further includes a plurality of third positioning blocks 14 , which are fixedly disposed on the upper surface of the first positioning seat 10 , and the third positioning blocks 14 are suitable for positioning the product 40 to be measured in the height direction.

[0073] Please note that, see Figure 2 As shown, the sizes and shapes of the third positioning blocks 14 are different. Please combine them together. Figure 5 As shown, the third positioning block 14 is suitable for abutting against one side of the product 40 to be tested in the height direction, so as to position the product 40 to be tested in the height direction to prevent the outer wall of the product 40 to be tested from being lower than the height of the measuring axis 31 .

[0074] The working principle of the wall thickness measuring fixture of the utility model is uniformly described as follows:

[0075] The measuring axis 31 of the height gauge 30 is brought into contact with the first positioning block 11, and the height gauge 30 is reset, and then the measuring axis 31 is retracted so that the measuring axis 31 is away from the first positioning block 11 along the length direction to avoid the product 40 to be measured;

[0076] The product 40 to be tested is placed on the first positioning seat 10, and the product 40 to be tested is positioned by the second positioning block 13 and the third positioning block 14, so that the product 40 to be tested can only move linearly along the length direction on the first positioning seat 10;

[0077] Push the product 40 to be tested along the length direction, so that the processed surface 41 on the inner wall of the product 40 to be tested abuts against the first positioning block 11, thereby completing the positioning of the product 40 to be tested;

[0078] The measuring axis 31 of the height gauge 30 is brought into contact with the outer wall of the product 40 to be measured, and the height gauge 30 is read to obtain the processed wall thickness of the product 40 to be measured.

[0079] By testing the product to be tested with the wall thickness measuring fixture of the utility model, compared with the 2.5-dimensional measurement method in the related art, not only the accuracy of the measured dimensions is improved, but also the measurement time of the processed wall thickness of the product to be tested 40 is greatly shortened, so that the dimensional processing problems of the machine can be discovered and identified in time.

[0080] Although the embodiments of the present invention are described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A wall thickness measuring jig, characterized in that: include: A first positioning seat (10) is suitable for positioning the product to be tested (40); A second positioning seat (20) is fixedly arranged on one side of the first positioning seat (10) in the length direction; A first positioning block (11) is fixedly arranged on the first positioning seat (10), and a side of the first positioning block (11) close to the second positioning seat (20) along the length direction is suitable for abutting against a processing surface (41) on the inner side wall of the product to be tested (40) to position the product to be tested (40) along the length direction; A height gauge (30) is arranged on the second positioning seat (20), and the height gauge (30) comprises a measuring axis (31), and one end of the measuring axis (31) close to the first positioning seat (10) along the length direction is suitable for abutting against the first positioning block (11) and / or the outer wall of the product to be measured (40).

2. The wall thickness measuring jig according to claim 1, characterized in that: The wall thickness measuring jig further comprises a plurality of positioning columns (12), wherein the plurality of positioning columns (12) are respectively arranged on both sides of the first positioning seat (10) in the width direction, and the positioning columns (12) are suitable for positioning the product (40) to be measured in the width direction.

3. The wall thickness measuring jig according to claim 2, characterized in that: The positioning column (12) is clearance-matched with the product to be tested (40).

4. The wall thickness measuring jig according to claim 2, characterized in that: The wall thickness measuring jig further comprises a plurality of second positioning blocks (13), wherein the second positioning blocks (13) are bolted to the first positioning seat (10), and the second positioning blocks (13) are suitable for positioning the positioning column (12); First positioning grooves (101) are provided on both sides of the first positioning seat (10) in the width direction, and the first positioning grooves (101) are suitable for pre-positioning the second positioning block (13).

5. The wall thickness measuring jig according to claim 4, characterized in that: A first through hole (131) is provided on the second positioning block (13); a first positioning hole (102) is provided on a wall surface on one side along the height direction in the first positioning groove (101); the first positioning hole (102) is coaxially arranged with the first through hole (131); and the first positioning hole (102) is suitable for positioning the second positioning block (13).

6. The wall thickness measuring jig according to claim 1, characterized in that: The second positioning seat (20) comprises a first fixing block (21) and a second fixing block (22); one side of the first fixing block (21) in the length direction is bolted to the first positioning seat (10); the second fixing block (22) is bolted to the first fixing block (21); the second fixing block (22) and the first fixing block (21) are suitable for positioning and fixing the height gauge (30).

7. The wall thickness measuring jig according to claim 6, characterized in that: A second positioning groove (103) is provided on one side of the first positioning seat (10) close to the first fixing block (21) along the length direction, and the second positioning groove (103) is suitable for pre-positioning the first fixing block (21).

8. The wall thickness measuring jig according to claim 7, characterized in that: A second through hole (211) is provided on the first fixing block (21); a second positioning hole (104) is provided on a wall surface on one side along the length direction of the second positioning groove (103); the second positioning hole (104) is coaxially arranged with the second through hole (211); and the second positioning hole (104) is suitable for positioning the first fixing block (21).

9. The wall thickness measuring jig according to claim 6, characterized in that: The first fixing block (21) and the second fixing block (22) are both provided with a positioning arc groove (201), the central axis of the positioning arc groove (201) coincides with the central axis of the measuring axis (31), and the first positioning block (11) is located on the extension line of the central axis of the measuring axis (31).

10. The wall thickness measuring jig according to any one of claims 1 to 9, characterized in that: The wall thickness measuring jig further comprises a plurality of third positioning blocks (14), wherein the plurality of third positioning blocks (14) are fixedly arranged on the upper surface of the first positioning seat (10), and the third positioning blocks (14) are suitable for positioning the product to be measured (40) in the height direction.

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