A radial clearance measuring device for shank inclined groove bearing

Abstract

The present invention discloses a radial clearance measuring device for a shank-belt groove bearing, comprising: a base plate; a first support seat and a second support seat arranged on the base plate; a first positioning device arranged on the first support seat; a second positioning device arranged on the second support seat; a test table support structure arranged on the base plate; a test table connected to the test table support structure; the positions of the first positioning device and the second positioning device correspond to each other, the test table is arranged between the first positioning device and the second positioning device, the first positioning device and the second positioning device are provided with a rod handle limiting device for limiting the handle on the shank-belt groove bearing, and the measuring head of the test table faces the top plane of the handle. The radial clearance measuring device for a shank-belt groove bearing of the present invention has a simple measuring method, is easy to use, and has accurate measuring results.

Description

Technical Field

[0001] The invention relates to the technical field of bearing measurement, and in particular to a radial clearance measuring device for a shank inclined groove bearing. Background Art

[0002] The shank-mounted inclined groove bearing includes a common outer ring, an inclined groove inner ring and an inclined groove outer ring. When measuring the radial clearance of the shank-mounted inclined groove bearing, the existing bearing clearance measuring instruments cannot measure it because the inclined groove inner ring is at a certain angle and the inclined groove outer ring has a rod handle.

[0003] At present, the radial clearance of shank bevel groove bearings is generally obtained through theoretical calculation. Since the data obtained by theoretical calculation fails to fully consider the surface roughness of each component of the shank bevel groove bearing, the actual size of each connected component and other factors, there is a difference between the actual radial clearance of the shank bevel groove bearing and the theoretical calculated clearance, so it is impossible to obtain a more accurate radial clearance of the shank bevel groove bearing.

[0004] Therefore, how to provide a measuring device for the radial clearance of a shank inclined groove bearing that is easy to use and can measure more accurately has become a technical problem that needs to be solved urgently by those skilled in the art. Summary of the invention

[0005] In view of this, the present invention provides a radial clearance measuring device for a shank-mounted oblique groove bearing to measure the radial clearance of the shank-mounted oblique groove bearing.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A radial clearance measuring device for a shank inclined groove bearing, comprising:

[0008] Base plate;

[0009] A first support seat and a second support seat are arranged on the bottom plate;

[0010] A first positioning device disposed on the first support seat;

[0011] A second positioning device disposed on the second support seat;

[0012] A test table support structure disposed on the base plate;

[0013] a test table connected to the test table support structure;

[0014] The positions of the first positioning device correspond to those of the second positioning device, and the test table is arranged between the first positioning device and the second positioning device. The first positioning device and the second positioning device are provided with a handle limiting device for limiting the handle on the handle bevel groove bearing, and the measuring head of the test table is facing the top plane of the handle.

[0015] Preferably, the first positioning device and the second positioning device both include a positioning groove, a positioning component and a fixing component. The positioning groove is arranged on the upper surfaces of the first support seat and the second support seat, the positioning component is arranged in the positioning groove, and the fixing component is arranged on the positioning component for positioning the positioning component.

[0016] Preferably, the positioning component includes a center and / or a core shaft, and the positioning ends of the center and the core shaft are connected to the bearing hole of the shank bevel groove bearing for positioning the shank bevel groove bearing.

[0017] Preferably, the positioning component also includes a sleeve, one end of the sleeve is slidably connected to the non-positioning end of the core shaft through an inner hole, and the other end is connected to a locking screw through a fourth threaded hole, and the inner hole is connected to the fourth threaded hole.

[0018] Preferably, the diameter of the inner hole is larger than the diameter of the fourth threaded hole, and a spring is provided on the step surface at the connection between the inner hole and the fourth threaded hole, one end of the spring contacts the end surface of the locking screw located in the fourth threaded hole, and the other end contacts the end surface of the core shaft located in the inner hole.

[0019] Preferably, the fixing component is a pressing plate, and a pressing groove is provided on the pressing plate, and the pressing groove is used in conjunction with the positioning groove.

[0020] Preferably, the cross section of the pressing groove is arc-shaped, and the cross section of the positioning groove is triangular.

[0021] Preferably, the test table support structure includes a column connected to the base plate, the column is connected to a fixed block, the fixed block is connected to a table head fixing rod, the test table is slidably connected to a first through hole on the table head fixing rod, and the side of the first through hole is threadedly connected with a first positioning screw for positioning the test table.

[0022] Preferably, one end of the fixed block is provided with a second through hole slidably connected to the column, and the side surface of the second through hole is threadedly connected with a second positioning screw for positioning the fixed block; the other end of the fixed block is provided with a third through hole slidably connected to the meter header fixing rod, and the side surface of the third through hole is threadedly connected with a third positioning screw for positioning the meter header fixing rod.

[0023] Preferably, the column is a cylindrical body, a side surface of the column is provided with a plane cross section, and the cross section of the second through hole is adapted to the cross section of the column.

[0024] Preferably, the handle limiting device includes a slide groove plate, which is arranged on the pressure plate, and the slide groove plate is provided with a slide groove for the handle of the handle-belt groove bearing to pass through, and the slide groove is a long strip groove, and the length direction of the slide groove is parallel to the length direction of the positioning groove.

[0025] Preferably, a guide column is fixedly connected to the end surface of the slide plate close to the positioning component, and the guide columns are arranged in pairs, and at least two pairs are arranged for coaxial guiding and limiting the positioning components on the first positioning device and the second positioning device.

[0026] Preferably, a manual boss is provided on the core shaft near the positioning end, and anti-slip knurling is provided on the side surface of the manual boss.

[0027] Preferably, the top positioning end is conical, and the conical part is inlaid with a YG6 layer.

[0028] Preferably, a locking head is provided at one end of the locking screw away from the core shaft, and anti-slip knurling is provided on the side surface of the locking head.

[0029] Preferably, the test gauge is a dial gauge.

[0030] It can be seen from the above technical scheme that the radial clearance measuring device of the shank bevel groove bearing provided by the present invention comprises: a base plate; a first support seat and a second support seat arranged on the base plate; a first positioning device arranged on the first support seat; a second positioning device arranged on the second support seat; a test table support structure arranged on the base plate; a test table connected to the test table support structure; the positions of the first positioning device and the second positioning device correspond to each other, the test table is arranged between the first positioning device and the second positioning device, the first positioning device and the second positioning device are provided with a rod handle limiting device for limiting the handle on the shank bevel groove bearing, and the measuring head of the test table faces the top plane of the handle. The radial clearance measuring device of the shank bevel groove bearing provided by this scheme solves the problem that the radial clearance of the shank bevel groove bearing has no measuring device and can only be obtained through theoretical calculation. The measuring device is simple to use and easy to use. The measurement result eliminates the influence of roughness and assembly error, and is more real and reliable than the calculated result. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0032] Figure 1 A schematic structural diagram of an angle of a device for measuring radial clearance of a shank inclined groove bearing provided by an embodiment of the present invention;

[0033] Figure 2 A schematic structural diagram of another angle of the radial clearance measuring device for a shank inclined groove bearing provided by an embodiment of the present invention;

[0034] Figure 3 A structural schematic diagram of another angle of the radial clearance measuring device for a shank inclined groove bearing provided by an embodiment of the present invention;

[0035] Figure 4 for Figure 2 A schematic diagram of the partial cross-sectional structure at AA in the middle;

[0036] Figure 5 It is a schematic diagram of the pressing plate structure of the present invention;

[0037] Figure 6 A schematic structural diagram of a first support seat of the present invention at one angle;

[0038] Figure 7 It is a structural schematic diagram of the first support seat of the present invention at another angle;

[0039] Figure 8 A schematic structural diagram of a column of the present invention at one angle;

[0040] Fig. 9 It is a structural schematic diagram of another angle of the column of the present invention;

[0041] Fig.10 It is a structural schematic diagram of the fixing block of the present invention;

[0042] Fig.11 for Fig.10 Schematic diagram of the cross-sectional structure at the middle BB;

[0043] Fig.12 It is a structural schematic diagram of the slide plate of the present invention;

[0044] Fig.13 It is a structural schematic diagram of the pressing plate of the present invention;

[0045] Fig.14 It is a structural schematic diagram of the meter head fixing rod of the present invention;

[0046] Fig.15 It is a schematic structural diagram of the sleeve of the present invention;

[0047] Fig.16 It is a top structural schematic diagram of the present invention.

[0048] 1. Base plate, 2. First support seat, 21. Positioning groove, 3. Top, 31. YG6 layer, 4. Press plate, 41. Press groove, 5. Slide plate, 51. Guide column, 52. Slide, 53. Connecting through hole, 6. Test table support structure, 61. Column, 611. Plane section, 62. Fixing block, 621. Second threaded hole, 622. Second through hole, 623. Third threaded hole, 624. Third through hole, 63. Table head fixing rod, 631. First through hole, 632. First threaded hole, 7. Test table, 8. Mandrel, 81. Manual boss, 9. Locking screw, 91. Locking head, 10. Second support seat, 11. Bevel groove bearing with handle, 110. Handle, 12. Spring, 13. Sleeve, 131. Inner hole, 132. Step surface, 133. Fourth threaded hole, 134. Light hole. DETAILED DESCRIPTION

[0049] The invention discloses a radial clearance measuring device for a shank inclined groove bearing, which is used to measure the radial clearance of the shank inclined groove bearing.

[0050] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0051] See also Figure 1-Figure 5 As shown, the present invention discloses a radial clearance measuring device for a shank-belt groove bearing, comprising a base plate 1, a first support seat 2, a second support seat 10 and a test table support structure 6; the first support seat 2 and the second support seat 10 are arranged on the base plate 1, a first positioning device is arranged on the first support seat 2, a second positioning device is arranged on the second support seat 10, the test table support structure 6 is arranged on the base plate 1, and a test table 7 is connected to the upper end of the test table support structure 6. The positions of the first positioning device and the second positioning device correspond to each other, the test table 7 is arranged between the first positioning device and the second positioning device, the first positioning device and the second positioning device are provided with a rod handle limiting device for limiting the handle 110 on the shank-belt groove bearing 11, and the measuring head of the test table 7 contacts the top end of the handle 110.

[0052] The two ends of the bearing hole of the shank bevel groove bearing 11 are positioned by the first positioning device and the second positioning device. The handle 110 of the shank bevel groove bearing 11 is vertically limited by the handle limiting device, so that the detection end of the test gauge 7 contacts the top of the handle 110. By manually applying external pressure, the radial clearance of the shank bevel groove bearing 11 is measured. The method of use is simple and convenient. The measurement result eliminates the influence of roughness and assembly errors, and is more real and reliable than the calculated result.

[0053] Among them, Figure 6 and Figure 7 As shown, the first positioning device and the second positioning device both include a positioning groove 21, a positioning component and a fixing component. The positioning groove 21 is arranged on the upper surface of the first support seat 2 and the second support seat 10. The positioning component is arranged in the positioning groove 21. The fixing component is arranged on the positioning component for positioning the positioning component. The two sides of the bearing hole of the shank inclined groove bearing 11 are positioned by the positioning components located on the first positioning device and the second positioning device, and the fixing component fixes and positions the positioning component.

[0054] For details, see Figure 1-Figure 7 , the positioning component includes a top 3 and / or a core shaft 8, and the positioning ends of the top 3 and the core shaft 8 are connected to the bearing hole of the shank bevel groove bearing 11, which are used to horizontally position the shank bevel groove bearing 11. In a specific embodiment, the top 3 is placed in the positioning groove 21 on the first support seat 2, and the core shaft 8 is placed in the positioning groove 21 on the second support seat 10. It can be understood that in another specific embodiment, the top 3 is placed in the positioning groove 21 on the second support seat 10, and the core shaft 8 is placed in the positioning groove 21 on the first support seat 2. The technical solution horizontally fixes the shank bevel groove bearing 11 by arranging the top 3 and the core shaft 8 in a horizontal position, and vertically limits the handle 110 of the shank bevel groove bearing 11 by the handle limiting device at the top position, thereby eliminating the influence of the bevel groove angle of the shank bevel groove bearing 11 on the bearing radial clearance measurement.

[0055] like Fig.15 As shown, in order to facilitate the adjustment of the position of the mandrel 8, the positioning component also includes a sleeve 13, one end of the sleeve 13 is slidably connected to the non-positioning end of the mandrel 8 through an inner hole 131, and the other end is connected to a locking screw 9 through a fourth threaded hole 133, and the inner hole 131 is connected to the fourth threaded hole 133. The fixing component located on one side of the mandrel 8 is pressed against the outer surface of the sleeve 13. The end face of the locking screw 9 located inside the mandrel 8 is against the end face of the mandrel 8, so that when the axial position of the mandrel 8 is adjusted, it is not necessary to disassemble the fixing component, thereby facilitating the adjustment and positioning of the axial position of the mandrel 8.

[0056] Furthermore, the diameter of the inner hole 131 is larger than the diameter of the fourth threaded hole 133, and a spring 12 is arranged on the step surface 132 where the inner hole 131 and the fourth threaded hole 133 are connected, and one end of the spring 12 contacts the end face of the locking screw 9 located in the fourth threaded hole 133, and the other end contacts the end face of the mandrel 8 located in the inner hole 131. By arranging the spring 12 in the inner hole 131, and the spring 12 is arranged between the mandrel 8 and the locking screw 9, when it is necessary to replace the shank bevel groove bearing 11 to be measured, it is only necessary to move the mandrel 8 along the inner hole 131 in the direction away from the shank bevel groove bearing 11, and the spring 12 is compressed at this time. After the shank bevel groove bearing 11 is replaced, the mandrel 8 is released, and under the elastic force of the spring 12, the positioning end of the mandrel 8 extends into the bearing hole of the shank bevel groove bearing 11 for horizontal positioning. Through the above structural arrangement, it is more convenient to replace the shank bevel groove bearing 11 with the detection device of the present invention, and the detection efficiency is improved. It can be understood that in order to make the end surface of the locking screw 9 located in the fourth threaded hole 133 better contact with one end surface of the spring 12, an end plate is connected to the end surface of the spring 12 close to the locking screw 9.

[0057] In another specific embodiment, in order to prevent the thread length of the fourth threaded hole 133 from being too long, affecting the straightness of the fourth threaded hole 133 and increasing the processing difficulty, a light hole 134 is provided at one end of the fourth threaded hole 133 away from the inner hole 131 .

[0058] like Fig.13 As shown, the fixing component is a pressing plate 4, on which a pressing groove 41 is provided, and the pressing groove 41 is used in conjunction with the positioning groove 21. In order to enable the pressing groove 41 and the positioning groove 21 to better position the sleeve 13 (with the core shaft 8 connected therein) and the top 3 placed therein, and prevent the two from rotating circumferentially in the pressing groove 41 and the positioning groove 21, the cross section of the pressing groove 41 is an arc shape, and the cross section of the positioning groove 21 is a triangle. Specifically, the pressing plate 4 is connected to the first support seat 2 and the second support seat 10 by screws. In order to ensure the clamping force of the screw connection, the end surface heights on both sides of the pressing groove 41 on the pressing plate 4 are different.

[0059] like Figure 1-Figure 11 and Fig.14 As shown, specifically, the test meter support structure 6 includes a column 61 connected to the bottom plate 1, a fixing block 62 is connected to the column 61, a meter head fixing rod 63 is connected to the fixing block 62, and the test meter 7 is slidably connected in the first through hole 631 on the meter head fixing rod 63, a first threaded hole 632 is arranged on the side of the first through hole 631, and a first positioning screw for positioning the meter rod of the test meter 7 is threadedly connected in the first threaded hole 632. Through the above structural setting, the position of the test meter 7 can be adjusted relative to the first through hole 631, which facilitates the height adjustment of the test meter 7.

[0060] Further, such as Figure 10-11 As shown, one end of the fixed block 62 is provided with a second through hole 622 that is slidably connected to the column 61, and the side of the second through hole 622 is provided with a second threaded hole 621, and the second threaded hole 621 is internally threadedly connected with a second positioning screw for positioning the fixed block 62. Through the above structural arrangement, it is convenient to adjust the position of the fixed block 62 relative to the column 61 in the height direction. The other end of the fixed block 62 is provided with a third through hole 624 that is slidably connected to the meter header fixing rod 63, and the side of the third through hole 624 is provided with a third threaded hole 623, and the third threaded hole 623 is internally threadedly connected with a third positioning screw for positioning the meter header fixing rod 63. Through the above structural arrangement, the relative position of the meter header fixing rod 63 and the fixed block 62 can be conveniently adjusted.

[0061] Furthermore, Figure 8-Figure 9 As shown, the column 61 is a cylindrical body, and a plane section 611 is provided on the side of the column. The section of the second through hole 622 is adapted to the section of the column to facilitate the connection between the two. By providing the plane section 611 along the axial direction of the column 61, the fixing block 62 is connected to the column 61 through the second through hole 622, and after being pressed and positioned by the second positioning screw, it is not easy to rotate circumferentially along the axis.

[0062] In a specific embodiment, in order to ensure that the second positioning screw has a good positioning effect, the second threaded hole 621 is disposed on a plane corresponding to the second through hole 622 and the plane cross section 611 .

[0063] Specifically, Fig.12 As shown, the handle limiting device includes a slide plate 5, which is arranged on the pressure plate 4. The slide plate 5 is provided with a slide groove 52 for the handle 110 of the handle bevel groove bearing 11 to pass through. The slide groove 52 is a long strip groove, and the length direction of the slide groove 52 is parallel to the length direction of the positioning groove 21. By providing the above-mentioned long strip slide groove 52 structure, the vertical position of the handle 110 can be limited, and at the same time, the handle 110 can have a certain activity space in the horizontal direction, thereby reducing the position limitation of the handle 110 of the handle bevel groove bearing 11 along the horizontal position, and reducing the installation accuracy requirements of the detection device.

[0064] Further, such as Fig.12 As shown, a guide column 51 is fixedly connected to the end surface of the slide plate 5 close to the positioning component. The guide columns 51 are arranged in pairs, and at least two pairs are arranged to coaxially guide and limit the positioning components on the first positioning device and the second positioning device.

[0065] In a specific embodiment, two pairs of guide columns 51 are provided, one pair of guide columns 51 is used to limit the outer diameter of the top point 3 placed on the first support seat 2, and the other pair of guide columns 51 is used to limit the outer diameter of the core shaft 8 placed on the second support seat 10, so that the axes of the top point 3 and the core shaft 8 coincide with each other, thereby achieving better positioning of the shank bevel groove bearing 11.

[0066] The slide plate 5 is provided with a connecting through hole 53, and the guide post 51 is fixedly connected in the connecting through hole 53. In a specific embodiment, the guide post 51 is connected with the connecting through hole 53 by interference fit.

[0067] In order to facilitate the movement of the mandrel 8 when replacing the shank inclined groove bearing 11, a manual boss 81 is provided near the positioning end of the mandrel 8, and anti-skid knurling is provided on the side of the manual boss 81. The anti-skid knurling is a mesh knurling or a parallel line knurling.

[0068] like Fig.16 As shown, the positioning end of the top 3 is conical, and the conical part is inlaid with a YG6 layer 31. By setting the YG6 (tungsten steel) layer 31, the YG6 material has good strength, impact resistance and wear resistance, good toughness, and improves the service life of the top 3.

[0069] In order to facilitate the operation of the locking screw 9, a locking head 91 is provided at one end of the locking screw 9 away from the core shaft 8, and an anti-skid knurling is provided on the side surface of the locking head 91, and the anti-skid knurling is a mesh knurling.

[0070] In a specific embodiment, the test gauge 7 is a micrometer.

[0071] In another specific embodiment, the bottom plate 1 is detachably connected to the column 61. Specifically, a hole connected to the column 61 is provided on the bottom plate 1, and the column 61 is slidably connected inside the hole. A fifth threaded hole is provided on the side of the hole, and a fourth positioning screw for positioning the lower end of the column 61 is connected in the fifth threaded hole.

[0072] Usage process: Place the tip 3 in the positioning groove 21 on the first support seat 2, place the positioning end of the tip 3 close to the second support seat 10, put the spring 12 into the inner hole 131, then connect the non-positioning end of the mandrel 8 to the inner hole 131 of the sleeve 13, place the sleeve 13 in the positioning groove 21 on the second support seat 10, make the positioning end of the mandrel 8 close to the positioning end of the tip 3, and use the tip 3 and the mandrel 8 to position the shank bevel groove bearing 11, fix the tip 3 and the mandrel 8 with the pressing plate 4, place the slide plate 5 on the pressing plate 4, make the handle 110 of the shank bevel groove bearing 11 pass through the slide 52, and make the top plane of the handle 110 face the measuring head of the micrometer. Tighten the locking screw 9. Manually load and unload the shank bevel groove bearing 11, and the swing range of the micrometer pointer is the radial clearance of the measured shank bevel groove bearing 11.

[0073] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A radial clearance measuring device for shank inclined groove bearings, It is characterized in that include: Bottom plate (1); A first support seat (2) and a second support seat (10) arranged on the bottom plate (1); A first positioning device arranged on the first supporting seat (2); A second positioning device disposed on the second support seat (10); A test table support structure (6) disposed on the base plate (1); A test table (7) connected to the test table support structure (6); The positions of the first positioning device and the second positioning device correspond to each other, the test gauge (7) is arranged between the first positioning device and the second positioning device, and the first positioning device and the second positioning device are provided with a handle limiting device for limiting the handle (110) on the handle-bearing oblique groove bearing (11), the handle limiting device vertically limits the handle (110) on the handle-bearing oblique groove bearing (11), and the measuring head of the test gauge (7) faces the top plane of the handle (110); The first positioning device and the second positioning device both comprise a positioning groove (21), a positioning component and a fixing component; the fixing component is a pressing plate (4); The handle limiting device comprises a slide groove plate (5), wherein the slide groove plate (5) is arranged on the pressure plate (4), and the slide groove plate (5) is provided with a slide groove (52) for the handle (110) of the handle inclined groove bearing (11) to pass through, and the length direction of the slide groove (52) is parallel to the length direction of the positioning groove (21).

2. The radial clearance measuring device for the shank inclined groove bearing according to claim 1, It is characterized in that The positioning groove (21) is arranged on the upper surfaces of the first supporting seat and the second supporting seat, the positioning component is arranged in the positioning groove (21), and the fixing component is arranged on the positioning component for positioning the positioning component.

3. The radial clearance measuring device of the shank inclined groove bearing according to claim 2, It is characterized in that The positioning component comprises a top (3) and / or a core shaft (8), and the positioning ends of the top (3) and the core shaft (8) are both connected to the bearing hole of the shank bevel groove bearing (11) for positioning the shank bevel groove bearing (11).

4. The radial clearance measuring device of the shank inclined groove bearing according to claim 3, It is characterized in that The positioning component also includes a sleeve (13), one end of the sleeve (13) is slidably connected to the non-positioning end of the core shaft (8) through an inner hole (131), and the other end is connected to a locking screw (9) through a fourth threaded hole (133), and the inner hole (131) is connected to the fourth threaded hole (133).

5. The radial clearance measuring device of the shank inclined groove bearing according to claim 4, It is characterized in that The diameter of the inner hole (131) is greater than the diameter of the fourth threaded hole (133); a spring (12) is provided on the step surface (132) at the connection point between the inner hole (131) and the fourth threaded hole (133); one end of the spring (12) contacts the end surface of the locking screw (9) located in the fourth threaded hole (133), and the other end contacts the end surface of the core shaft (8) located in the inner hole (131).

6. The radial clearance measuring device of the shank inclined groove bearing according to claim 1, It is characterized in that The pressing plate (4) is provided with a pressing groove (41), and the pressing groove (41) is used in conjunction with the positioning groove (21).

7. The radial clearance measuring device of the shank inclined groove bearing according to claim 6, It is characterized in that The cross section of the pressing groove (41) is in the shape of an arc, and the cross section of the positioning groove (21) is in the shape of a triangle.

8. The radial clearance measuring device of the shank inclined groove bearing according to claim 1, It is characterized in that The test meter support structure (6) comprises a column (61) connected to the base plate (1), a fixing block (62) connected to the column (61), a meter head fixing rod (63) connected to the fixing block (62), the test meter (7) being slidably connected to a first through hole (631) on the meter head fixing rod (63), and a first positioning screw for positioning the test meter (7) being threadedly connected to a side surface of the first through hole (631).

9. The radial clearance measuring device of the shank inclined groove bearing according to claim 8, It is characterized in that One end of the fixing block (62) is provided with a second through hole (622) slidably connected to the column (61), and the side surface of the second through hole (622) is threadedly connected to a second positioning screw for positioning the fixing block (62); the other end of the fixing block (62) is provided with a third through hole (624) slidably connected to the meter head fixing rod (63), and the side surface of the third through hole (624) is threadedly connected to a third positioning screw for positioning the meter head fixing rod (63).

10. The radial clearance measuring device of the shank inclined groove bearing according to claim 9, It is characterized in that The column (61) is a cylindrical body, a side surface of the column is provided with a plane section (611), and the section of the second through hole (622) is adapted to the section of the column.

11. The radial clearance measuring device of the shank inclined groove bearing according to claim 1, It is characterized in that The slide groove (52) is a long strip groove.

12. The radial clearance measuring device of the shank inclined groove bearing according to claim 1, It is characterized in that A guide column (51) is fixedly connected to the end surface of the slide plate (5) close to the positioning component. The guide columns (51) are arranged in pairs, and at least two pairs are arranged to coaxially guide and limit the positioning components on the first positioning device and the second positioning device.

13. The radial clearance measuring device of the shank inclined groove bearing according to claim 3, It is characterized in that A manual boss (81) is provided on the mandrel (8) at a position close to the positioning end, and anti-slip knurling is provided on the side surface of the manual boss (81).

14. The radial clearance measuring device of the shank inclined groove bearing according to claim 3, It is characterized in that The positioning end of the tip (3) is conical, and the conical part is inlaid with a YG6 layer (31).

15. The radial clearance measuring device of the shank inclined groove bearing according to claim 4, It is characterized in that A locking head (91) is provided at one end of the locking screw (9) away from the core shaft (8), and anti-slip knurling is provided on the side surface of the locking head (91).

16. The radial clearance measuring device of the shank inclined groove bearing according to claim 1, It is characterized in that The test gauge (7) is a micrometer.

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