Thin-wall angular contact ball bearing groove precision measuring device

Abstract

The invention relates to the technical field of bearing measurement, in particular to a thin-wall angular contact ball bearing groove precision measuring device which comprises a vertical frame of a concave structure, two positioning plates and a mounting frame, the two positioning plates are fixedly mounted at the upper end and the lower end of an opening in the front end of the vertical frame respectively, and the mounting frame is movably mounted in the vertical frame and located between the two positioning plates. A limiting mechanism is arranged in the mounting frame; dial indicators are obliquely mounted on two sides of the front end surface of the upper end positioning plate; on the basis of limiting the bearing adaptability, the bearing groove can be measured in multiple directions, the diversity of measured data can be improved, the precision of the bearing groove can be analyzed fully, the interior of the groove can be cleaned adaptively before bearing measurement, residual scraps can be discharged in an auxiliary mode, and the bearing groove precision can be improved. The influence on the bearing groove measuring effect is reduced, the defective rate of bearings is reduced, and the bearing groove measuring effect is effectively improved.

Description

Technical Field

[0001] The present invention relates to the technical field of bearing measurement, and specifically relates to a groove precision measurement device for a thin-walled angular contact ball bearing. Background Art

[0002] Bearings are important components in a rotating mechanical system, and their quality directly affects the life, stability, and safety of the entire mechanism system. Among them, angular contact ball bearings are a type of bearing that can simultaneously bear radial loads and axial loads and can operate at relatively high speeds.

[0003] The bearing ring is an important part of the bearing. In order to measure whether the precision of the bearing ring meets the requirements of production, it is necessary to measure the precision of the groove of the bearing ring. For example, a groove precision detection device for a thin-walled angular contact ball bearing with the patent number CN210374857U is provided with load blocks of different masses and sizes through a replacement disc, which can cooperate with angular contact bearings of different diameters.

[0004] It should be noted that although the above patent can clamp and measure bearings of various sizes, it only realizes the measurement of a single direction of the bearing groove, and it is difficult to perform multi-directional measurement on the inside of the bearing groove, especially the bearing with a deep V groove, which is likely to result in overly single measurement data and affect the analysis of the measurement results. In addition, since the bearing is made of metal, dust particles are easily adsorbed on the surface or inner groove, or there are waste chips that have not been completely removed after processing. The presence of these dust particles and waste chips also easily affects the analysis of the groove measurement data, further increasing the defective rate of the bearing and greatly reducing the bearing measurement efficiency. Summary of the Invention

[0005] The purpose of the present invention is to, on the basis of the adaptability limitation of the bearing, not only be able to perform multi-directional measurement on the bearing groove, which is beneficial to improving the diversity of measurement data and fully analyzing the precision of the bearing groove, but also be able to adaptively clean the inside of the groove before bearing measurement, assist in discharging residual waste chips, etc., so as to reduce the influence on the measurement effect of the bearing groove and reduce the defective rate of the bearing, and effectively improve the measurement effect of the bearing groove.

[0006] The purpose of the present invention can be achieved through the following technical solutions: A groove precision measurement device for a thin-walled angular contact ball bearing includes a vertical frame with a concave structure, two groups of positioning plates, and a mounting frame. The two groups of positioning plates are respectively fixedly installed at the upper and lower ends of the front opening of the vertical frame. The mounting frame is movably installed inside the vertical frame between the two groups of positioning plates. A limiting mechanism is arranged inside the mounting frame. Dial indicators are inclined and installed on both sides of the front end face of the upper positioning plate. The bottom measuring rods of the two groups of dial indicators extend to the front end of the mounting frame. A waste material removing component is provided on the front end face of the lower positioning plate.

[0007] Among them, the limiting mechanism includes a positioning cylinder which is disposed through the center of the interior of the installation frame. One end of the positioning cylinder extends into the inner groove provided inside the installation frame, and the other end thereof extends outside the installation frame and is fixedly installed with a disc near the outer wall surface of the installation frame. One end of the positioning cylinder extending outside the installation frame is provided with a second cylinder inside, and the output end of the second cylinder is fixedly installed with a pressing cylinder through a push rod. Three groups of card slots with inclined inner walls are equidistantly arranged at one end of the pressing cylinder away from the second cylinder, and a pressing shaft penetrates through the inside of the card slots.

[0008] Furthermore, convex circular shafts are fixedly installed on both sides of the middle section of the rear end face of the installation frame. The two convex circular shafts are respectively slidably connected inside the vertical grooves provided on both sides of the rear of the vertical frame. The rear ends of the two convex circular shafts extend outside the vertical grooves and are commonly fixedly connected with a long rod. A first cylinder is provided through a push rod at the center of the upper end of the long rod, and the first cylinder is disposed on the rear end face of the vertical frame.

[0009] Furthermore, one end of the pressing shaft extending into the card slot is provided with an inclined cutting surface, and the other end thereof extends outside the positioning cylinder and is fixedly installed with a top plate. A disc is sleeved on the middle section of the outer wall of the pressing shaft, and a reset spring ring is commonly provided between the disc on the outer wall of the pressing shaft and the inner wall of the positioning cylinder.

[0010] Furthermore, the limiting mechanism further includes a motor which is disposed at the bottom of the inner wall of the rear end of the inner groove, and a spiral rotating rod is fixedly installed at the front end output shaft of the motor. The end of the spiral rotating rod horizontally penetrates through the bottom of the positioning cylinder. Long grooves are provided on both side walls of the spiral rotating rod and at the inner ends inside the positioning cylinder, and sliders are provided on the inner wall of the positioning cylinder and at the positions corresponding to the two groups of long grooves on the left and right. The sliders slide inside the corresponding long grooves.

[0011] Furthermore, a steering gear is meshed and connected to the upper end of the spiral rotating rod, and the central axis of the steering gear is rotationally connected to the side wall of the corresponding inner groove through a connecting rod. An inclined concave pressing frame is provided at the front end of the steering gear inside the inner groove, and the top end of the concave pressing frame is hinged to the concave card slot provided on the top inner wall of the inner groove.

[0012] Furthermore, the bottom of the concave pressing frame is sleeved outside the positioning cylinder and is located between two limiting rings fixedly installed outside the positioning cylinder. An inclined hinge rod is commonly hinged to the same side wall surface of the concave pressing frame and the steering gear.

[0013] Furthermore, the waste material removing assembly includes a limiting frame plate which is fixedly installed at the center of the front end of the positioning plate near the lower end of the vertical frame. An opening groove is provided at the center of the inside of the limiting frame plate, and a cleaning piece penetrates through the inside of the opening groove. The top of the cleaning piece is provided with inclined cutting arc surfaces at the front and rear end faces, and brush hairs are embedded in the inclined cutting arc surfaces.

[0014] Further, vertical sliding grooves I are arranged in the middle of both side surfaces of the cleaning sheet. Sliding rods are respectively and slidably connected to the bottoms inside the two groups of vertical sliding grooves I. One ends of the two sliding rods far away from the vertical sliding grooves I are fixedly connected to the inner wall of the opening groove. A damping spring shock absorber ring is fixedly installed between the top of the sliding rod and the inner wall of the top of the vertical sliding groove I. A vertical sliding groove II is arranged inside the cleaning sheet at the upper end of the opening groove. A tooth groove group is arranged on one inner wall of the vertical sliding groove II. A transmission gear is meshed and connected to the bottom end inside the vertical sliding groove II. The center of the rear end of the transmission gear is rotatably connected to the surface of the positioning plate through a fixedly installed rotating rod.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] 1. In the present invention, by setting a dial indicator and a limiting mechanism in cooperation, first, the bearing is sleeved on the end of the positioning cylinder. The air cylinder pushes the abutting cylinder, forcing the abutting shaft and the abutting cylinder to move relative to each other and respectively extend and move inside the clamping groove until the three top plates jointly support the bearing, so as to realize the limitation of the bearing and reduce the falling off of the bearing during the measurement process. With the help of the air cylinder I pushing the mounting frame and the bearing upward synchronously, the probe tips at the bottoms of the two dial indicators are respectively inserted into one end of the deep V groove of the bearing. The motor drives the screw rotating rod, the positioning cylinder and the bearing to rotate. The probes of the two dial indicators move relatively along the inside of the bearing groove, so as to perform a circumferential detection on the flatness of the inner groove wall of the bearing.

[0017] At the same time, the screw rotating rod meshes with the steering gear, forcing the steering gear to rotate circumferentially. One end of the hinge rod is pulled by the steering gear and pushes the concave abutting frame to reciprocate. The concave abutting frame continuously pushes the two limiting rings left and right, forcing the positioning cylinder and the bearing to perform a certain amplitude of reciprocating motion. The probes of the dial indicator move left and right along the inside of the bearing groove and rotate circumferentially at the same time for measurement.

[0018] It can not only adaptively limit the bearing, but also realize the self-rotation and reciprocating push of the bearing, so as to perform transverse and longitudinal circumferential measurements on the inside of the bearing groove, realize multi-directional measurements on the inside of the groove, be more conducive to improving the diversity of data, and fully analyze the accuracy of the bearing groove.

[0019] 2. The present invention also uses a waste material removal component as an auxiliary. The air cylinder I pushes the mounting frame and the bearing to sink synchronously until the tops of the two cleaning sheets are inserted into one end of the inner groove of the bearing. The top of the cleaning sheet is adaptively pressed by the inner wall of the deep V groove of the bearing. With the operation of the limiting mechanism, the bearing is forced to rotate and reciprocate, so that the cleaning sheet moves relatively along the inside of the deep V groove of the bearing and rubs against each other for cleaning. Through multi-directional and adaptive cleaning of the inside of the bearing groove, it helps to accelerate the removal of waste chips and dust particles inside the groove, reduce the influence on the measurement effect of the bearing groove and reduce the defective rate of the bearing, and further strengthen the measurement effect of the bearing groove. Description of the Drawings

[0020] For the convenience of those skilled in the art to understand, the present invention will be further described below with reference to the accompanying drawings.

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 It is a front view plane schematic diagram of the vertical frame of the present invention;

[0023] Figure 3 It is a rear view plane schematic diagram of the vertical frame of the present invention;

[0024] Figure 4 It is a side sectional view of the vertical frame of the present invention;

[0025] Figure 5 It is a half sectional view of the installation frame of the present invention;

[0026] Figure 6 It is a schematic diagram of the partial structure of the abutting cylinder of the present invention;

[0027] Figure 7 It is a three-dimensional view of the combination of the positioning plate and the waste material removal component of the present invention.

[0028] In the figure: 1. Vertical frame; 2. Positioning plate; 3. Installation frame; 301. Convex circular shaft; 302. Long rod; 303. Cylinder 1; 4. Limiting mechanism; 41. Positioning cylinder; 42. Cylinder 2; 43. Abutting cylinder; 44. Abutting shaft; 45. Top plate; 451. Return spring ring; 46. Motor; 47. Spiral rotating rod; 48. Steering gear; 49. Concave abutting frame; 410. Limiting ring; 411. Hinge rod; 5. Dial indicator; 6. Waste material removal component; 61. Limiting frame plate; 62. Cleaning piece; 63. Slide rod; 64. Damping spring shock absorber ring; 65. Transmission gear. Specific embodiments

[0029] The technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. 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.

[0030] Embodiment 1: Please refer to Figure 1 - Figure 6 As shown, a groove precision measuring device for thin-walled angular contact ball bearings includes a vertical frame 1 with a concave structure, two groups of positioning plates 2 and an installation frame 3. The two groups of positioning plates 2 are respectively fixedly installed at the upper and lower ends of the front opening of the vertical frame 1, and the installation frame 3 is movably installed inside the vertical frame 1 between the two groups of positioning plates 2;

[0031] A limiting mechanism 4 is arranged inside the installation frame 3. Dial indicators 5 are inclined and installed on both sides of the front end face of the upper positioning plate 2. The bottom rods of the two groups of dial indicators 5 extend to the front end of the installation frame 3. The limiting mechanism 4 includes a positioning cylinder 41. The positioning cylinder 41 is arranged through the center inside the installation frame 3. One end of the positioning cylinder 41 extends into the inner groove arranged inside the installation frame 3, and the other end thereof extends outside the installation frame 3 and is fixedly installed with a disc near the outer wall surface of the installation frame 3.

[0032] At one end of the positioning cylinder 41 extending outside the installation frame 3 inside, a second cylinder 42 is arranged. The output end of the second cylinder 42 is fixedly installed with a resisting cylinder 43 through a push rod. The resisting cylinder 43 is far away from the second cylinder 42. Three groups of clamping grooves with inclined inner walls are arranged at equal intervals at one end. A resisting shaft 44 penetrates through the clamping grooves. One end of the resisting shaft 44 extending into the clamping grooves is arranged with an inclined section, and the other end thereof extends outside the positioning cylinder 41 and is fixedly installed with a top plate 45. A disc is sleeved at the middle section of the outer wall of the resisting shaft 44. A reset spring ring 451 is arranged between the outer wall of the resisting shaft 44 and the inner wall of the positioning cylinder 41 between the disc and the inner wall of the positioning cylinder 41.

[0033] First, the inner or outer bearing is sleeved on the end part of the positioning cylinder 41 (the end extending outside the installation frame 3) and outside the three groups of top plates 45. The second cylinder 42 is started, and the resisting cylinder 43 is pushed towards the outside of the positioning cylinder 41 by the push rod. The resisting shaft 44 and the resisting cylinder 43 move relatively and respectively extend and move inside the clamping grooves. The inclined section of the resisting shaft 44 is pressed by the inclined inner wall surface of the clamping grooves, so that the resisting shaft 44 penetrates towards the outside of the positioning cylinder 41. At this time, the reset spring ring 451 is compressed, and the three groups of top plates 45 move towards the inner wall surface of the (inner, outer) bearing at the same time until the three groups of top plates 45 jointly support the bearing, so as to realize the adaptive limitation of the bearing and reduce the situation of bearing falling off during the measurement process.

[0034] Convex circular shafts 301 are fixedly installed on both sides of the middle section of the rear end face of the installation frame 3. The two groups of convex circular shafts 301 are respectively slidably connected inside the vertical grooves arranged on the rear sides of the two sides of the vertical frame 1. The rear ends of the two groups of convex circular shafts 301 extend outside the vertical grooves and are jointly fixedly connected with a long rod 302. A first cylinder 303 is arranged at the center of the upper end of the long rod 302 through a push rod, and the first cylinder 303 is arranged on the rear end face of the vertical frame 1.

[0035] After the inner ring of the bearing is limited, the first cylinder 303 is started, and the long rod 302 is pulled upwards by the push rod and the installation frame 3 and the limited inner bearing ring are synchronously pulled upwards through the two groups of convex circular shafts 301 until the probe tips at the bottoms of the two groups of dial indicators 5 are respectively inserted into one end of the deep V grooves of the bearing.

[0036] The limiting mechanism 4 further includes a motor 46, which is arranged at the bottom position of the inner wall at the rear end of the inner groove. A spiral rod 47 is fixedly installed at the front output shaft of the motor 46. The end of the spiral rod 47 horizontally penetrates through the bottom of the positioning cylinder 41. When the motor 46 is started, it drives the spiral rod 47, the positioning cylinder 41 and the bearing to rotate synchronously. Thus, the probes of the two dial indicators 5 move relatively inside the bearing groove, so as to perform a circumferential detection on the flatness of the inner groove wall of the bearing;

[0037] It should be noted that long grooves are provided on both side walls of the spiral rod 47 and at the inner ends located inside the positioning cylinder 41, and sliders are provided on the inner wall of the positioning cylinder 41 at the positions corresponding to the two groups of long grooves on the left and right. The sliders slide inside the corresponding long grooves. There is only a horizontal sliding connection relationship in the left and right directions between the spiral rod 47 and the positioning cylinder 41, which will not affect the spiral rod 47 driving the positioning cylinder 41 to rotate circumferentially.

[0038] Embodiment 2: Since the circular trajectory of the circumferential measurement is relatively fixed, and only the wall surface of a single circumferential area inside the groove is measured, it is easy to cause situations such as single measurement data inside the groove;

[0039] Please refer to Figure 4 - Figure 5 As shown, a steering gear 48 is meshed and connected to the upper end of the spiral rod 47, and the central axis of the steering gear 48 is rotationally connected to the side wall of the corresponding inner groove through a connecting rod. An inclined concave abutting frame 49 is provided at the front end of the steering gear 48 inside the inner groove. The top end of the concave abutting frame 49 is hinged to the concave card slot provided on the inner wall at the top of the inner groove. The bottom of the concave abutting frame 49 is sleeved outside the positioning cylinder 41 and is located between the two limiting rings 410 fixedly installed outside the positioning cylinder 41. An inclined hinge rod 411 is jointly hinged to the same side wall surface of the concave abutting frame 49 and the steering gear 48;

[0040] This embodiment operates based on Embodiment 1. When the motor 46 drives the spiral rod 47 to rotate, the spiral rod 47 meshes with the steering gear 48 to force the steering gear 48 to rotate circumferentially. During this process, one end of the hinge rod 411 is pulled by the steering gear 48 to push the concave abutting frame 49 to move reciprocally. The concave abutting frame 49 continuously pushes the two limiting rings 410 left and right to force the positioning cylinder 41 and the bearing to perform a certain amplitude of reciprocating motion. The probes of the dial indicator 5 displace left and right inside the bearing groove and rotate circumferentially at the same time for detection. The measurement data of the two dial indicators 5 are recorded and comprehensively analyzed;

[0041] It can not only limit the adaptability of the bearing, but also realize the self-rotation and reciprocating push of the bearing, so as to perform circumferential measurements in the horizontal and vertical directions inside the bearing groove (such as Figure 4 the indicated direction in), realize multi-directional measurement inside the groove, be more conducive to improving the diversity of data, and fully analyze the accuracy of the bearing groove;

[0042] Embodiment 3: Since the bearing is made of metal, dust particles are likely to be adsorbed on the surface or in the inner groove, or waste chips that have not been completely removed after processing remain. The presence of these dust particles and waste chips can easily affect the analysis of groove measurement data and increase the defective rate of the bearing;

[0043] Please refer to Figure 1 and Figure 7 As shown, the surplus material removal assembly 6 includes a limit frame plate 61. The limit frame plate 61 is fixedly installed at the front center position of the positioning plate 2 near the lower end of the vertical frame 1. An opening groove is provided at the center inside the limit frame plate 61. A cleaning piece 62 is penetrated through the opening groove. The top of the cleaning piece 62 is provided with inclined cutting arc surfaces on both the front and rear end faces, and brushes are embedded in the inclined cutting arc surfaces. Vertical sliding grooves 1 are provided at the middle sections of both side faces of the cleaning piece 62;

[0044] Sliding rods 63 are respectively slidably connected to the bottoms inside the two groups of vertical sliding grooves 1. One ends of the two groups of sliding rods 63 away from the vertical sliding grooves 1 are fixedly connected to the inner wall of the opening groove. A damping spring shock absorber ring 64 is fixedly installed between the top of the sliding rod 63 and the inner wall of the top of the vertical sliding groove 1. A vertical sliding groove 2 is provided inside the cleaning piece 62 at the upper end of the opening groove. A tooth groove group is provided on one inner wall of the vertical sliding groove 2. A transmission gear 65 is meshed and connected to the bottom inside the vertical sliding groove 2. The center of the rear end of the transmission gear 65 is rotatably connected to the surface of the positioning plate 2 through a fixedly installed rotating rod;

[0045] Therefore, before measuring the bearing groove, first start the cylinder 1 303 to push the long rod 302 to sink by using the push rod. The two ends of the long rod 302 pull the convex circular shaft 301 to force the installation frame 3 and the bearing to sink synchronously until the tops of the two cleaning pieces 62 are inserted into one end of the inner groove of the bearing. The top of the cleaning piece 62 is pressed by the inner wall of the deep V groove of the bearing, forcing the cleaning piece 62 to sink. The sliding rod 63 moves downward along the inside of the vertical sliding groove 1 and causes the damping spring shock absorber ring 64 to be compressed. The transmission gear 65 moves relatively along the inside of the vertical sliding groove 2 and meshes with the tooth groove group to assist the cleaning piece 62 to sink or rise stably until the top cleaning surface of the cleaning piece 62 adapts to the internal changes of the deep V groove of the bearing. At the same time, by means of the operation of the limiting mechanism 4, the bearing is forced to rotate and reciprocate, so that the cleaning piece 62 moves relatively along the inside of the deep V groove of the bearing and rubs against each other for cleaning;

[0046] Then, the inside of the bearing groove is cleaned in multiple directions and adaptively, which helps to accelerate the removal of waste chips and dust particles inside the groove, reduce the influence on the measurement effect of the bearing groove and reduce the defective rate of the bearing.

[0047] Working principle:

[0048] When the present invention is in use, first, an inner or outer bearing is sleeved on the end of the positioning cylinder 41 (the end extending outside the mounting frame 3) and located outside the three sets of top plates 45. The second cylinder 42 is started, and the push rod is used to push the abutting cylinder 43 outwards of the positioning cylinder 41. The abutting shaft 44 moves relative to the abutting cylinder 43 and extends into the internal movement of the card slots respectively. And the inclined plane of the abutting shaft 44 is pressed by the inclined inner wall surface of the card slot, forcing the abutting shaft 44 to penetrate outwards of the positioning cylinder 41 until the three sets of top plates 45 jointly support the bearing, realizing the limitation of the bearing;

[0049] Next, the first cylinder 303 uses the push rod to pull the long rod 302 upwards and drives the mounting frame 3 and the limited inner bearing ring to move upwards synchronously through the two convex circular shafts 301 until the bottom probe tips of the two dial indicators 5 are respectively inserted into one end of the deep V groove of the bearing. Then, the motor 46 is started to drive the screw rotating rod 47, the positioning cylinder 41 and the bearing to rotate synchronously. Thus, the probes of the two dial indicators 5 move relatively along the inner part of the bearing groove, so as to perform circumferential detection on the flatness of the inner groove wall surface of the bearing;

[0050] At the same time, the screw rotating rod 47 meshes with the steering gear 48, forcing the steering gear 48 to rotate circumferentially. During this process, one end of the hinge rod 411 is pulled by the steering gear 48 to push the concave abutting frame 49 to reciprocate. The concave abutting frame 49 continuously pushes the two limiting rings 410 left and right, forcing the positioning cylinder 41 and the bearing to perform a certain range of reciprocating motion. The probes of the dial indicator 5 move left and right along the inner part of the bearing groove and rotate circumferentially at the same time for measurement. The measurement data of the two dial indicators 5 are recorded and comprehensively analyzed;

[0051] Before that, the first cylinder 303 uses the push rod to push the long rod 302 to sink, and the two ends of the long rod 302 pull the convex circular shafts 301, forcing the mounting frame 3 and the bearing to sink synchronously until the tops of the two cleaning pieces 62 are inserted into one end of the inner groove of the bearing. The tops of the cleaning pieces 62 are pressed by the inner wall of the deep V groove of the bearing, and with the operation of the limiting mechanism 4, the bearing is forced to rotate and reciprocate, so that the cleaning pieces 62 move relatively along the deep V groove of the bearing and rub against each other for cleaning.

[0052] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the present invention to only the specific implementation manners. Obviously, according to the content of this specification, many modifications and changes can be made. These embodiments are selected and specifically described in this specification in order to better explain the principle and practical application of the present invention, so that those skilled in the relevant technical field can understand and utilize the present invention well. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. A device for measuring the groove accuracy of a thin-walled angular contact ball bearing, comprising a vertical frame (1) with a concave structure, two sets of positioning plates (2) and a mounting frame (3), characterized in that: The two groups of positioning plates (2) are respectively fixedly mounted at the upper and lower ends of the front end opening of the vertical frame (1); the installation frame (3) is movably mounted inside the vertical frame (1) and located between the two groups of positioning plates (2); a limiting mechanism (4) is arranged inside the installation frame (3); a dial indicator (5) is obliquely mounted on both sides of the front end surface of the upper positioning plate (2); the bottoms of the measuring rods at the bottom of the two groups of dial indicators (5) extend to the front end of the installation frame (3); and a residual material removal component (6) is arranged on the front end surface of the lower positioning plate (2); The limiting mechanism (4) comprises a positioning cylinder (41), the positioning cylinder (41) being arranged at the center of the interior of the mounting frame (3), one end of the positioning cylinder (41) extending into an inner groove arranged inside the mounting frame (3), and the other end thereof extending outside the mounting frame (3) and fixedly mounted with a disc near the outer wall surface of the mounting frame (3), one end of the positioning cylinder (41) extending outside the mounting frame (3) being provided with a second cylinder (42), and an output end of the second cylinder (42) being fixedly mounted with a resisting cylinder (43) via a push rod, the resisting cylinder (43) being away from the second cylinder (42), and having three groups of slots arranged with an inner wall in a beveled shape at equal distances at one end, and a resisting shaft (44) being arranged inside the slot and running through it.

2. A thin-wall angular contact ball bearing groove accuracy measuring device according to claim 1, characterized in that: Convex circular shafts (301) are fixedly mounted on both sides of the middle section of the rear end surface of the installation frame (3); two groups of the convex circular shafts (301) are respectively slidably connected to the inside of vertical grooves arranged at the rear two sides of the vertical frame (1); the rear ends of the two groups of the convex circular shafts (301) extend to the outside of the vertical groove and are fixedly connected to a long rod (302); a cylinder 1 (303) is arranged at the center of the upper end of the long rod (302) via a push rod, and the cylinder 1 (303) is arranged on the rear end surface of the vertical frame (1).

3. A thin-wall angular contact ball bearing groove accuracy measuring device according to claim 1, characterized in that: One end of the abutment shaft (44) extending into the slot is provided with an oblique cut surface, and the other end thereof extends to the outside of the positioning tube (41) and is fixedly mounted with a top plate (45); a disc is sleeved at the middle section of the outer wall of the abutment shaft (44), and a return spring ring (451) is provided between the outer wall of the abutment shaft (44) and the inner wall of the positioning tube (41).

4. A thin-wall angular contact ball bearing groove accuracy measuring device according to claim 1, characterized in that: The limiting mechanism (4) further comprises a motor (46), the motor (46) being arranged at the bottom position of the inner wall at the rear end of the inner groove, and a spiral rotating rod (47) being fixedly mounted at the output shaft at the front end of the motor (46), the end of the spiral rotating rod (47) being laterally penetrated through the bottom of the positioning cylinder (41), both side walls of the spiral rotating rod (47) and the inner end of the positioning cylinder (41) being arranged in the long grooves, and slide blocks being arranged on the inner wall of the positioning cylinder (41) and at the left and right positions corresponding to the two groups of long grooves, and the slide blocks sliding inside the corresponding long grooves.

5. A thin-wall angular contact ball bearing groove accuracy measuring device according to claim 4, characterized in that: The upper end of the spiral rotating rod (47) is meshingly connected with a steering gear (48), and the central axis of the steering gear (48) is rotatably connected to the corresponding inner groove side wall through a connecting rod. An inclined concave abutment frame (49) is provided inside the inner groove and at the front end of the steering gear (48), and the top end of the concave abutment frame (49) is hinged to a concave clamping groove provided on the inner wall of the top of the inner groove.

6. A thin-wall angular contact ball bearing groove accuracy measuring device according to claim 5, characterized in that: The bottom of the concave abutment frame (49) is sleeved on the outside of the positioning cylinder (41) and is located between two groups of limit rings (410) fixedly mounted on the outside of the positioning cylinder (41). The concave abutment frame (49) and the steering gear (48) are hingedly connected to an inclined hinge rod (411) on the same side wall.

7. A thin-wall angular contact ball bearing groove accuracy measuring device according to claim 1, characterized in that: The residual material removal component (6) comprises a limiting frame plate (61), the limiting frame plate (61) being fixedly mounted at the front center of the positioning plate (2) near the lower end of the vertical frame (1), and an open groove is provided at the inner center of the limiting frame plate (61), a cleaning sheet (62) is provided through the inner part of the open groove, the top of the cleaning sheet (62) is located at the front and rear end surfaces and is provided in the form of a beveled arc surface, and a brush is embedded in the beveled arc surface.

8. A thin-wall angular contact ball bearing groove accuracy measuring device according to claim 7, characterized in that: The cleaning sheet (62) is provided with a vertical slide groove 1 at the middle section of both sides, and the bottom ends of the two groups of vertical slide grooves 1 are slidably connected with slide rods (63), and the ends of the two groups of slide rods (63) away from the vertical slide groove 1 are fixedly connected to the inner wall of the opening groove, and a damping spring vibration reduction ring (64) is fixedly installed between the top of the slide rod (63) and the top inner wall of the vertical slide groove 1. The cleaning sheet (62) is provided with a vertical slide groove 2 at the upper end of the opening groove, and a tooth groove group is provided on one side inner wall of the vertical slide groove 2. A transmission gear (65) is meshedly connected at the bottom end of the vertical slide groove 2, and the rear end center of the transmission gear (65) is rotationally connected to the surface of the positioning plate (2) through a fixedly installed rotating rod.

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