A device for measuring the waviness of a thrust ball bearing raceway

Abstract

The present invention discloses a device for measuring the waviness of a thrust ball bearing raceway, and specifically relates to the field of bearing raceway measurement, including a workbench, a measuring instrument is arranged in the workbench, a stylus is arranged at the collecting end of the measuring instrument, the stylus is arranged vertically in the workbench and the collecting end of the stylus faces downward; a workpiece fastening mechanism is arranged in the workbench. The present invention sets a workpiece fastening mechanism and a workpiece adjustment mechanism, clamps and positions the shaft ring workpiece by bringing a fastening disk 1 and a fastening disk 2 close to each other, then drives the tip of the stylus to fit with the inner wall of the raceway of the shaft ring workpiece, drives the shaft ring workpiece to swing by moving the output end of a linear drive 1, and can ensure that the tip of the stylus is perpendicular to the tangent direction of the raceway groove surface at the contact point during measurement, so as to avoid the displacement felt by the stylus from containing additional lateral components, reduce the wear of the stylus tip, and avoid errors in the measurement results, thereby further improving the accuracy of the waviness measurement.

Description

Technical Field

[0001] The invention relates to the technical field of bearing raceway measurement, and more specifically to a device for measuring the waviness of a thrust ball bearing raceway. Background Art

[0002] Thrust ball bearings are specially designed to bear axial loads and are usually used in applications where rotating parts need to be supported and significant axial forces are applied to these parts. The waviness of the thrust ball bearing raceway refers to a manifestation of microscopic unevenness on the machined surface. Unlike surface roughness, it mainly focuses on the shape error of the medium and long wave components. For thrust ball bearings, the waviness of the raceway has an important impact on the running accuracy, noise level, vibration and life of the bearing. Therefore, the waviness of the thrust ball bearing needs to be measured after production to prevent unqualified products from entering the market.

[0003] In the prior art, when measuring the waviness of the thrust ball bearing raceway, the thrust ball bearing is first clamped and positioned using a positioning assembly. In order to be able to measure very subtle changes in waviness in the raceway and improve measurement accuracy, and to avoid the influence of factors such as ambient light and material reflectivity, a contact sensor is used to make the tip of the stylus contact the raceway surface of the thrust ball bearing. The thrust ball bearing is driven to make circular motion around its central axis through the positioning assembly, and the tip of the stylus remains stationary. After the thrust ball bearing rotates one circle, the stylus converts the detected mechanical displacement into an electrical signal, and the amplitude and shape of the electrical signal reflect the waviness characteristics of the thrust ball bearing raceway surface. In order to fully measure the waviness of the thrust ball bearing raceway surface, after the thrust ball bearing raceway surface completes a full circular rotation, the stylus is moved a short distance along the axis of the thrust ball bearing, and then the above measurement process is repeated to obtain the overall waviness of the raceway surface.

[0004] In order to ensure that the steel balls of the thrust ball bearing can roll smoothly on the raceway while minimizing the friction and wear of the steel balls, the raceway surface of the bearing shaft ring and the steel balls have an adaptive curvature radius. However, after the thrust ball bearing rotates one circle, when the stylus moves a short distance along the axis of the thrust ball bearing to continue measuring the waviness of the raceway, it cannot be ensured that the stylus tip is perpendicular to the tangent direction of the raceway groove surface at the contact point. The displacement felt by the stylus will include an additional lateral component, which will not only accelerate the wear of the stylus tip, but also cause errors in the measurement results, reducing the accuracy of the waviness measurement. Summary of the invention

[0005] The present invention provides a device for measuring the waviness of a thrust ball bearing raceway, and aims to solve the problem that, in the existing device for measuring the waviness of a thrust ball bearing raceway, after the thrust ball bearing rotates one circle, when the stylus moves a short distance along the axis of the thrust ball bearing to continue measuring the waviness of the raceway, it is impossible to ensure that the tip of the stylus is perpendicular to the tangent direction of the raceway groove surface at the contact point, and the displacement felt by the stylus will include an additional lateral component, which will not only accelerate the wear of the tip of the stylus, but also cause errors in the measurement results, thereby reducing the accuracy of the waviness measurement.

[0006] To achieve the above object, the present invention provides the following technical solution: a device for measuring the waviness of a thrust ball bearing raceway, comprising a workbench, a measuring instrument is arranged in the workbench, a stylus is arranged at the collection end of the measuring instrument, the stylus is vertically arranged in the workbench and the collection end of the stylus faces downward;

[0007] A workpiece fastening mechanism is arranged in the workbench, and the workpiece fastening mechanism comprises a fastening plate 1, a fastening plate 2 is slidably arranged on the fastening plate 1, a shaft ring workpiece is arranged between the fastening plate 1 and the fastening plate 2, a raceway surface is arranged on the top of the shaft ring workpiece, and the fastening plate 2 moves toward the fastening plate 1 to horizontally fix the shaft ring workpiece between the fastening plate 1 and the fastening plate 2;

[0008] A workpiece adjustment mechanism is arranged in the workbench, and the workpiece adjustment mechanism comprises a linear driver 1. The output end of the linear driver 1 is matched with a fastening disk 1. During measurement, the bottom end of the stylus is in contact with the raceway surface of the shaft ring workpiece. The linear driver 1 is used to drive the shaft ring workpiece to swing. When the shaft ring workpiece swings, the contact point between the stylus and the raceway surface of the shaft ring workpiece is always maintained in a direction passing through the contact point and along the radial direction of the raceway surface of the shaft ring workpiece. The shaft ring workpiece generates relative displacement with the collecting end of the stylus through rotation.

[0009] In a preferred embodiment, the workpiece adjustment mechanism also includes a connecting shaft, a linear drive 1 is fixedly arranged in the workbench, the connecting shaft is fixedly arranged on the output end of the linear drive 1, an arc-shaped frame plate is fixedly arranged in the workbench, a sliding seat is slidably arranged in the arc-shaped frame plate, a hollow rectangular plate is fixedly arranged on the sliding seat, the connecting shaft is movably arranged in the hollow rectangular plate, and a fastening plate 1 is arranged on the sliding seat.

[0010] In a preferred embodiment, a marking mechanism is provided on the measuring instrument, and the marking mechanism includes a marking liquid storage tube, which is fixedly arranged on the measuring instrument. A flow channel is provided on the bottom inner wall of the marking liquid storage tube, and an adapting hollow shaft is slidably provided in the marking liquid storage tube. A liquid inlet hole is provided on the adapting hollow shaft, and the flow channel is adapted to the liquid inlet hole. The same set of elastic parts 2 is provided between the inner wall of the marking liquid storage tube and the adapting hollow shaft.

[0011] In a preferred embodiment, a base plate is fixedly provided on the fastening disk 1, an eccentric column is rotatably provided on the base plate, a guide rod is also fixedly provided on the fastening disk 1, the fastening disk 2 is slidably sleeved on the guide rod, an elastic member 1 is provided between the fastening disk 1 and the fastening disk 2, and the eccentric column and the fastening disk 2 are rollingly provided.

[0012] In a preferred embodiment, a support frame is fixedly arranged on the sliding seat, a rotation driver 1 is rotatably arranged on the support frame, an output shaft of the rotation driver 1 is fixedly arranged on the base plate, a rotation driver 2 is fixedly arranged on the support frame, and the rotation of the output shaft of the rotation driver 2 is used to drive the rotation driver 1 to swing.

[0013] In a preferred embodiment, a linear adjustment mechanism is provided in the workbench, and the linear adjustment mechanism includes an auxiliary frame, which is slidably arranged in the workbench, and a linear drive 2 is fixedly arranged on the auxiliary frame, a movable seat is slidably arranged on the output end of the linear drive 2, and the measuring instrument is fixedly arranged on the movable seat.

[0014] In a preferred embodiment, a linear drive three is fixedly arranged on the workbench, and the output end of the linear drive three is fixedly arranged on the auxiliary frame. A guide rail is also fixedly arranged on the workbench, and a slide is fixedly arranged on the auxiliary frame, and the slide is slidably arranged with the guide rail.

[0015] In a preferred embodiment, a horizontal plate one is fixedly arranged on the adapter hollow shaft, a horizontal plate two is fixedly arranged on the inner wall of the marking liquid storage tube, the adapter hollow shaft and the horizontal plate two are slidingly arranged, the elastic member two is fixedly arranged at the bottom of the horizontal plate one, and the bottom end of the elastic member two is fixedly arranged at the top of the horizontal plate two.

[0016] In a preferred embodiment, the flow channel includes a vertical groove and two horizontal through holes, the two horizontal through holes are connected to the vertical groove, and the two horizontal through holes are located on one side of the same vertical groove, and the liquid inlet is located between the two corresponding horizontal through holes.

[0017] In a preferred embodiment, a support seat is fixedly provided on both the fastening disc 1 and the fastening disc 2. The support seat is located on a side where the fastening disc 1 and the fastening disc 2 are close to each other, and the support seat is used to support the shaft ring workpiece.

[0018] The beneficial effects of the present invention are:

[0019] 1. The present invention provides a workpiece fastening mechanism and a workpiece adjusting mechanism, and clamps and positions the shaft ring workpiece by bringing the fastening disk 1 and the fastening disk 2 close to each other, and then drives the tip of the stylus to fit the inner wall of the raceway of the shaft ring workpiece, and drives the shaft ring workpiece to swing by moving the output end of the linear driver 1. During measurement, it can ensure that the tip of the stylus is perpendicular to the tangent direction of the raceway groove surface at the contact point, so as to avoid the displacement felt by the stylus containing additional lateral components, reduce the wear of the tip of the stylus, and avoid errors in the measurement results, thereby further improving the accuracy of the waviness measurement.

[0020] 2. The present invention sets a marking mechanism so that when measuring the corrugation of the raceway of the shaft ring workpiece, the bottom end of the adapter hollow shaft is always in contact with the inner wall of the raceway. When passing through a position with larger corrugations, the adapter hollow shaft can discharge marking pigment from the bottom end under the action of the elastic force of the elastic member, which is beneficial to repair the raceway of the shaft ring workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0022] Figure 2 It is a structural schematic diagram of the main view of the workbench of the present invention.

[0023] Figure 3 It is a schematic diagram of the three-dimensional structure of the auxiliary frame of the present invention.

[0024] Figure 4 It is a schematic diagram of the three-dimensional structure of the fastening plate 1 of the present invention.

[0025] Figure 5 It is a schematic structural diagram of a front view of a linear actuator of the present invention.

[0026] Figure 6 It is a schematic diagram of the motion trajectory of the shaft ring workpiece of the present invention.

[0027] Figure 7 It is a schematic structural diagram of the stylus of the present invention from the side.

[0028] Figure 8 It is a schematic diagram of the cross-sectional structure of the marking liquid storage tube of the present invention when viewed from the front.

[0029] Fig. 9 The figure is a schematic diagram of the cross-sectional structure of the hollow shaft adapted for the present invention from the front view.

[0030] The accompanying drawings are marked as follows: 1. workbench; 2. measuring instrument; 21. stylus; 3. workpiece fastening mechanism; 31. fastening disk 1; 32. fastening disk 2; 33. elastic member 1; 34. eccentric column; 35. rotation driver 1; 36. support frame; 37. rotation driver 2; 4. workpiece adjustment mechanism; 41. linear driver 1; 42. connecting shaft; 43. arc frame plate; 44. sliding seat; 45. hollow rectangular plate; 5. marking mechanism; 51. marking liquid storage tube; 511. flow channel; 52. matching hollow shaft; 521. liquid inlet hole; 53. elastic member 2; 6. linear adjustment mechanism; 61. auxiliary frame; 62. linear driver 2; 63. moving seat; 7. shaft ring workpiece. DETAILED DESCRIPTION

[0031] The present application is further described in detail below in conjunction with the accompanying drawings. It is necessary to point out here that the following specific implementation methods are only used to further illustrate the present application and cannot be understood as limiting the scope of protection of the present application. Technical personnel in this field can make some non-essential improvements and adjustments to the present application based on the above application content.

[0032] Refer to the instruction manual Figures 1 to 6 A device for measuring the waviness of a thrust ball bearing raceway comprises a workbench 1, a measuring instrument 2 is arranged in the workbench 1, a collection end of the measuring instrument 2 is provided with a stylus 21, the stylus 21 is vertically arranged in the workbench 1 and the collection end of the stylus 21 faces downward;

[0033] A workpiece fastening mechanism 3 is provided in the workbench 1, and the workpiece fastening mechanism 3 includes a fastening plate 1 31, a fastening plate 2 32 is slidably provided on the fastening plate 1 31, a shaft ring workpiece 7 is provided between the fastening plate 1 31 and the fastening plate 2 32, a raceway surface is provided on the top of the shaft ring workpiece 7, and the fastening plate 2 32 moves toward the fastening plate 1 31 to horizontally fix the shaft ring workpiece 7 between the fastening plate 1 31 and the fastening plate 2 32;

[0034] A workpiece adjustment mechanism 4 is arranged in the workbench 1, and the workpiece adjustment mechanism 4 includes a linear driver 41. The output end of the linear driver 41 is adapted to the fastening disk 31. During measurement, the bottom end of the stylus 21 is in contact with the raceway surface of the shaft ring workpiece 7. The linear driver 41 is used to drive the shaft ring workpiece 7 to swing, and when the shaft ring workpiece 7 swings, the contact point between the stylus 21 and the raceway surface of the shaft ring workpiece 7 is always maintained in a direction passing through the contact point and along the radial direction of the raceway surface of the shaft ring workpiece 7. The shaft ring workpiece 7 generates relative displacement with the collecting end of the stylus 21 through rotation.

[0035] It should be noted that the measuring instrument 2 and the stylus 21 form a contact sensor, and the bottom end of the stylus 21 is the collecting end, also called the tip. When the bottom end of the stylus 21 contacts the raceway surface of the shaft ring workpiece 7 and then generates a relative displacement, the tiny displacement of the stylus 21 will be converted into an electrical signal by the mechanical or electronic components inside the measuring instrument 2. The electrical signal generated by the measuring instrument 2 is then transmitted to a data acquisition system, where it is amplified, filtered, and other processing, and then the signal can be analyzed using a software algorithm to extract information about the waviness of the raceway surface of the shaft ring workpiece 7. The raceway waviness of the shaft ring workpiece 7 is required to be controlled within 0.1 to 0.3 microns. As a mature existing technology, it will not be elaborated on here.

[0036] It should also be noted that when the shaft ring workpiece 7 swings, the contact point between the stylus 21 and the raceway surface of the shaft ring workpiece 7 is always maintained in the radial direction passing through the contact point and along the raceway surface of the shaft ring workpiece 7. The above sentence can also be understood as that when measuring the waviness of the raceway of the shaft ring workpiece 7, the bottom end of the stylus 21 is in contact with the inner wall of the raceway of the shaft ring workpiece 7. The cross-sectional schematic diagram of the main view of the raceway of the shaft ring workpiece 7 is shown in FIG. Figure 6 Since the raceway shape and curvature of the shaft ring workpiece 7 need to adapt to the steel ball, the cross-sectional shape of the raceway of the shaft ring workpiece 7 is semicircular. Therefore, when adjusting the position of the shaft ring workpiece 7, the contact point between the stylus 21 and the inner wall of the raceway of the shaft ring workpiece 7 is always located at the bottom of the semicircle or the lowest point of the semicircle. It can also be understood that the tip of the stylus 21 is perpendicular to the tangent direction of the raceway groove surface of the shaft ring workpiece 7 at the contact point, thereby avoiding the displacement felt by the stylus 21 when measuring the raceway surface of the shaft ring workpiece 7 through the tip of the stylus 21. The stylus 21 contains additional lateral components.

[0037] The specific implementation scenario is: make the raceway surface of the shaft ring workpiece 7 face upward, place the shaft ring workpiece 7 between the fastening disk 1 31 and the fastening disk 2 32, drive the fastening disk 2 32 to move toward the fastening disk 1 31, and position the shaft ring workpiece 7 through the arc-shaped side walls of the fastening disk 1 31 and the fastening disk 2 32, and then drive the stylus 21 to move into the raceway of the shaft ring workpiece 7, so that the tip of the stylus 21 contacts the center position of the raceway of the shaft ring workpiece 7, and the center axis of the stylus 21 is perpendicular to the tangent of the contact surface of the stylus 21 on the raceway, and then drive the shaft ring workpiece 7 to make a circular motion along its own center of circle through the fastening disk 1 31 and the fastening disk 2 32. After the shaft ring workpiece 7 rotates one circle, the waviness of the raceway of the shaft ring workpiece 7 can be measured by the data collected by the tip of the stylus 21. In order to improve the measurement completeness of the raceway waviness of the shaft ring workpiece 7, refer to Figure 6It is necessary to perform a complete measurement on each surface of the raceway of the shaft ring workpiece 7. At this time, the shaft ring workpiece 7 is driven to swing by moving the output end of the linear driver 41. When the shaft ring workpiece 7 swings, the contact point between the stylus 21 and the raceway surface of the shaft ring workpiece 7 is always maintained in the radial direction of the raceway surface of the shaft ring workpiece 7 passing through the contact point. Then, the shaft ring workpiece 7 is driven to perform circular motion along its center. That is, the position of the shaft ring workpiece 7 is adjusted while the stylus 21 remains stationary, so that the tip of the stylus 21 is always in contact with the inner wall of the raceway of the shaft ring workpiece 7. The above operation can be repeated to complete the complete measurement of the raceway waviness of the shaft ring workpiece 7. Compared with the measurement method in the prior art in which the shaft ring workpiece 7 is kept stationary, the tip of the stylus 21 is in contact with the inner wall of the raceway of the shaft ring workpiece 7 and the stylus 21 is driven to make a circular motion along the center of the shaft ring workpiece 7, driving the shaft ring workpiece 7 to make a circular motion along its center not only simplifies the complexity of the measurement, but is also suitable for detecting the waviness of the raceway surface of shaft ring workpieces 7 of different diameters. Keeping the stylus 21 stationary compared to driving the stylus 21 to rotate along the central axis of the shaft ring workpiece 7 can avoid the vibration of the stylus 21 caused by the vibration of the driving source, which ultimately leads to inaccurate measurement results. It can also ensure that the tip of the stylus 21 is perpendicular to the tangent direction of the raceway groove surface at the contact point, avoid the displacement felt by the stylus 21 including the external lateral component, reduce the wear of the tip of the stylus 21, and avoid errors in the measurement results, thereby further improving the accuracy of the waviness measurement.

[0038] Refer to the instruction manual Figures 1 to 5 In order to completely and efficiently detect the corrugation of the inner wall of the raceway of the shaft ring workpiece 7 and facilitate the driving of the shaft ring workpiece 7 to swing, the contact point between the stylus 21 and the raceway surface of the shaft ring workpiece 7 is always maintained in the radial direction passing through the contact point and along the raceway surface of the shaft ring workpiece 7. Specifically, the workpiece adjustment mechanism 4 also includes a connecting shaft 42, a linear drive 41 is fixedly arranged in the workbench 1, and the connecting shaft 42 is fixedly arranged on the output end of the linear drive 41. An arc-shaped frame plate 43 is fixedly arranged in the workbench 1, and a sliding seat 44 is slidably arranged in the arc-shaped frame plate 43. A hollow rectangular plate 45 is fixedly arranged on the sliding seat 44, and the connecting shaft 42 is movably arranged in the hollow rectangular plate 45. A fastening disk 31 is arranged on the sliding seat 44.

[0039] It should be noted that the coordinates of the center of the arc frame plate 43 and the raceway surface section of the shaft ring workpiece 7 are the same, that is, the center of the arc frame plate 43 and the center of the raceway surface section of the shaft ring workpiece 7 are concentrically arranged.

[0040] It should also be noted that the linear drive 41 is configured as a linear motor, the linear motor is fixedly disposed in the workbench 1, and the connecting shaft 42 is fixedly disposed on the output shaft of the linear motor.

[0041] In this embodiment, the linear drive 41 is started, and the mobile driving connecting shaft 42 at the output end of the linear drive 41 moves. The connecting shaft 42 moves in the hollow rectangular plate 45. When the connecting shaft 42 produces a horizontal displacement, it will drive the sliding seat 44 to slide in the arc frame plate 43 along the length direction of the arc frame plate 43, so as to achieve the effect of making the sliding seat 44 do a circular motion along the center of the arc frame plate 43. The movement of the sliding seat 44 drives the shaft ring workpiece 7 to move, so that the contact point between the stylus 21 and the raceway surface of the shaft ring workpiece 7 is always maintained in the radial direction of the raceway surface of the shaft ring workpiece 7 through the contact point, so as to achieve the measurement of the raceway surface waviness by adjusting the swing and then rotation of the shaft ring workpiece 7 without moving the stylus 21.

[0042] Refer to the instruction manual Figures 7 to 9 After the stylus 21 measures the waviness of the raceway of the shaft ring workpiece 7, if there is a certain error between the measurement result and the qualified product range, it is necessary to decide whether it is necessary to repair the shaft ring workpiece 7 according to the actual situation, such as the concave or convex situation. In the prior art, only the waviness of the raceway of the shaft ring workpiece 7 can be measured, which is not convenient for marking the position where the raceway in the shaft ring workpiece 7 has a large fluctuation, which is not conducive to the subsequent repair of the defect by the staff. In order to solve the above problems, specifically, a marking mechanism 5 is provided on the measuring instrument 2, and the marking mechanism 5 includes a marking liquid storage tube 51, which is fixedly arranged on the measuring instrument 2, and a flow channel 511 is opened on the inner wall of the bottom of the marking liquid storage tube 51, and an adapting hollow shaft 52 is slidably arranged in the marking liquid storage tube 51, and a liquid inlet hole 521 is opened on the adapting hollow shaft 52, and the flow channel 511 is adapted to the liquid inlet hole 521, and the same group of elastic members 53 are arranged between the inner wall of the marking liquid storage tube 51 and the adapting hollow shaft 52. A horizontal plate 1 is fixedly arranged on the adapter hollow shaft 52, a horizontal plate 2 is fixedly arranged on the inner wall of the marking liquid storage tube 51, the adapter hollow shaft 52 is slidably arranged with the horizontal plate 2, the elastic member 2 53 is fixedly arranged at the bottom of the horizontal plate 1, and the bottom end of the elastic member 2 53 is fixedly arranged with the top of the horizontal plate 2. The flow channel 511 includes a vertical groove and two horizontal through holes, the two horizontal through holes are both connected to the vertical groove, and the two horizontal through holes are both located on one side of the same vertical groove, and the liquid inlet hole 521 is located between the two corresponding horizontal through holes.

[0043] It should be noted that a feed pipe is fixedly connected to the marking liquid storage tube 51, and the connecting pipe is used to transport marking pigment into the marking liquid storage tube 51. The elastic member 2 53 is set as a spring, and the spring is fixedly set between the horizontal plate 1 and the horizontal plate 2. The adapter hollow shaft 52 is provided with a scale line, and the scale line on the adapter hollow shaft 52 is located above the top of the marking liquid storage tube 51. The height of the marking liquid storage tube 51 on the measuring instrument 2 can be adjusted according to the indication of the scale line.

[0044] It should also be noted that, after the shaft ring workpiece 7 is fixed between the fastening disk 1 31 and the fastening disk 2 32, the measuring instrument 2 is driven to move vertically downward, and the bottom end of the stylus 21 is in contact with the inner wall of the raceway of the shaft ring workpiece 7. At this time, the bottom end of the matching hollow shaft 52 is also in contact with the inner wall of the raceway of the shaft ring workpiece 7, and the elastic member 2 53 is stretched and deformed. At this time, the liquid inlet hole 521 is located between the two corresponding horizontal through holes, and the bottom end of the matching hollow shaft 52 passes through the raceway of the shaft ring workpiece 7. If the undulations in the raceway are large and there are protrusions and depressions, under the action of the elastic force of the elastic member 2 53 , the bottom end of the adapter hollow shaft 52 is always tightly fitted with the inner wall of the raceway of the shaft ring workpiece 7, and a relative displacement will occur between the adapter hollow shaft 52 and the marking liquid storage tube 51, and then the vertical up and down displacement of the liquid inlet hole 521 is connected with the horizontal through hole, and then the marking pigment in the marking liquid storage tube 51 will enter the adapter hollow shaft 52 through the vertical groove and the horizontal through hole, and finally the marking pigment is applied to the position of the shaft ring workpiece 7 with larger ripples through the bottom end of the adapter hollow shaft 52, so that the staff can repair the defective position of the raceway of the shaft ring workpiece 7 after detection. Compared with the prior art, firstly, the stylus 21 and the adapter hollow shaft 52 are kept in a vertical state and immobile, and then the shaft ring workpiece 7 is driven to rotate to mark the position with larger ripples in the raceway, which improves the measurement efficiency and marking efficiency. If the stylus 21 and the marking liquid storage tube 51 are driven to rotate to keep the shaft ring workpiece 7 immobile, the marking pigment will overflow from the bottom end of the adapter hollow shaft 52 under the action of gravity and centrifugal force, resulting in poor marking effect. The rotation speed of the driving shaft ring workpiece 7 can be adjusted according to actual conditions, which will not be described in detail here.

[0045] Refer to the instruction manual Figures 1 to 4 In order to facilitate the positioning of the shaft ring workpiece 7 and drive the shaft ring workpiece 7 to rotate and swing, specifically, a bottom plate is fixedly arranged on the fastening disk 1 31, an eccentric column 34 is rotatably arranged on the bottom plate, a guide rod is also fixedly arranged on the fastening disk 1 31, a fastening disk 2 32 is slidably sleeved on the guide rod, an elastic member 1 33 is arranged between the fastening disk 1 31 and the fastening disk 2 32, and the eccentric column 34 is rollably arranged with the fastening disk 2 32. A support seat is fixedly arranged on the fastening disk 1 31 and the fastening disk 2 32, and the support seat is located on the side where the fastening disk 1 31 and the fastening disk 2 32 are close to each other, and the support seat is used to support the shaft ring workpiece 7. A support frame 36 is fixedly arranged on the sliding seat 44, and a rotating driver 1 35 is rotatably arranged on the support frame 36, the output shaft of the rotating driver 1 35 is fixedly arranged on the bottom plate, and a rotating driver 2 37 is fixedly arranged on the support frame 36, and the rotation of the output shaft of the rotating driver 2 37 is used to drive the rotating driver 1 35 to swing.

[0046] It should be noted that the elastic member 1 33 is configured as a spring, and the two ends of the spring are respectively fixedly arranged on the fastening plate 1 31 and the fastening plate 2 32. The rotation driver 1 35 is configured as a motor, and the output shaft of the motor is fixedly arranged on the bottom plate. The rotation driver 2 37 is fixedly arranged with a bevel gear 1, and the rotation driver 1 35 is fixedly arranged with a bevel gear 2, and the bevel gear 1 is meshed with the bevel gear 2.

[0047] It should also be noted that the shaft ring workpiece 7 is placed on the support seat, and then the eccentric column 34 is rotated. Since the eccentric column 34 is eccentrically set, the rotation of the eccentric column 34 and the rolling setting of the fastening disk 2 32 push the fastening disk 2 32 toward the fastening disk 1 31. The fastening disk 2 32 moves toward the fastening disk 1 31 to reduce the distance between the fastening disk 1 31 and the fastening disk 2 32. The shaft ring workpiece 7 is positioned through the side walls of the fastening disk 1 31 and the fastening disk 2 32, and the rotating driver 1 35 is started. The rotation of the output shaft of the rotating driver 1 35 drives the base plate to rotate, thereby achieving the effect of driving the shaft ring workpiece 7 to rotate horizontally. The rotating driver 2 37 is started, and the output shaft of the rotating driver 2 37 rotates, so that relative rotation is generated between the rotating driver 1 35 and the support frame 36, thereby achieving the effect of adjusting the angle of the shaft ring workpiece 7.

[0048] Refer to the instruction manual Figures 1 to 3 In order to facilitate the adjustment of the position of the stylus 21, specifically, a linear adjustment mechanism 6 is provided in the workbench 1, and the linear adjustment mechanism 6 includes an auxiliary frame 61, which is slidably arranged in the workbench 1, and a linear driver 2 62 is fixedly arranged on the auxiliary frame 61, and a moving seat 63 is slidably arranged on the output end of the linear driver 2 62, and the measuring instrument 2 is fixedly arranged on the moving seat 63. A linear driver 3 is fixedly arranged on the workbench 1, and the output end of the linear driver 3 is fixedly arranged with the auxiliary frame 61. A guide rail is also fixedly arranged on the workbench 1, and a slide is fixedly arranged on the auxiliary frame 61, and the slide is slidably arranged with the guide rail.

[0049] It should be noted that the linear drive three is configured as a linear motor, which is fixedly arranged in the workbench 1, and the output shaft of the linear motor is fixedly arranged on the auxiliary frame 61; the linear drive two 62 is configured as a linear motor, which is fixedly arranged on the auxiliary frame 61, and a rack is fixedly arranged on the linear drive two 62, and a motor is fixedly arranged on the moving seat 63, and a gear is fixedly arranged on the output shaft of the motor, and the gear is meshed with the rack, and the rotation of the motor output shaft drives the moving seat 63 to slide on the output end of the linear drive two 62.

[0050] It should also be noted that when linear driver three is started, the output end of linear driver three drives the auxiliary frame 61 to move horizontally in the workbench 1, and when linear driver two 62 is started, the output end of linear driver two 62 drives the moving seat 63 to move vertically, thereby achieving the effect of adjusting the measuring instrument 2 to move vertically and horizontally in the workbench 1.

[0051] The above embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present invention. It should be pointed out that, for those of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention.

Claims

1. A device for measuring the waviness of a thrust ball bearing raceway, characterized in that: It comprises a workbench (1), wherein a measuring instrument (2) is arranged inside the workbench (1), a collection end of the measuring instrument (2) is provided with a stylus (21), and the stylus (21) is vertically arranged inside the workbench (1) with the collection end of the stylus (21) facing downwards; A workpiece fastening mechanism (3) is arranged in the workbench (1), and the workpiece fastening mechanism (3) comprises a fastening disk 1 (31), a fastening disk 2 (32) is slidably arranged on the fastening disk 1 (31), a shaft ring workpiece (7) is arranged between the fastening disk 1 (31) and the fastening disk 2 (32), a raceway surface is arranged on the top of the shaft ring workpiece (7), and the fastening disk 2 (32) is moved toward the fastening disk 1 (31) to horizontally fix the shaft ring workpiece (7) between the fastening disk 1 (31) and the fastening disk 2 (32); A workpiece adjustment mechanism (4) is provided in the workbench (1), and the workpiece adjustment mechanism (4) comprises a linear drive (41), the output end of the linear drive (41) is adapted to a fastening disk (31), and the bottom end of the stylus (21) is in contact with the raceway surface of the shaft ring workpiece (7) during measurement, and the linear drive (41) is used to drive the shaft ring workpiece (7) to swing, and when the shaft ring workpiece (7) swings, the contact point between the stylus (21) and the raceway surface of the shaft ring workpiece (7) is always maintained in a direction passing through the contact point and along the radial direction of the raceway surface of the shaft ring workpiece (7), and the shaft ring workpiece (7) generates relative displacement with the collection end of the stylus (21) through rotation; The workpiece adjustment mechanism (4) further comprises a connecting shaft (42), the linear drive (41) being fixedly arranged in the workbench (1), the connecting shaft (42) being fixedly arranged on the output end of the linear drive (41), an arc-shaped frame plate (43) being fixedly arranged in the workbench (1), a sliding seat (44) being slidably arranged in the arc-shaped frame plate (43), a hollow rectangular plate (45) being fixedly arranged on the sliding seat (44), the connecting shaft (42) being movably arranged in the hollow rectangular plate (45), and the fastening plate (31) being arranged on the sliding seat (44).

2. The device for measuring the waviness of a thrust ball bearing raceway according to claim 1, characterized in that: The measuring instrument (2) is provided with a marking mechanism (5), the marking mechanism (5) comprising a marking liquid storage tube (51), the marking liquid storage tube (51) being fixedly arranged on the measuring instrument (2), a flow channel (511) being provided on the inner wall of the bottom of the marking liquid storage tube (51), an adapting hollow shaft (52) being slidably arranged in the marking liquid storage tube (51), a liquid inlet hole (521) being provided on the adapting hollow shaft (52), the flow channel (511) being adapted to the liquid inlet hole (521), and a same set of elastic members (53) being provided between the inner wall of the marking liquid storage tube (51) and the adapting hollow shaft (52).

3. The device for measuring the waviness of a thrust ball bearing raceway according to claim 2, characterized in that: A bottom plate is fixedly arranged on the fastening disk 1 (31), an eccentric column (34) is rotatably arranged on the bottom plate, the fastening disk 1 (31) is also fixedly arranged with a guide rod, the fastening disk 2 (32) is slidably sleeved on the guide rod, an elastic member 1 (33) is arranged between the fastening disk 1 (31) and the fastening disk 2 (32), and the eccentric column (34) and the fastening disk 2 (32) are rollingly arranged.

4. The device for measuring the waviness of a thrust ball bearing raceway according to claim 3, characterized in that: A support frame (36) is fixedly arranged on the sliding seat (44), a rotary driver (35) is rotatably arranged on the support frame (36), an output shaft of the rotary driver (35) is fixedly arranged on the bottom plate, a rotary driver (37) is fixedly arranged on the support frame (36), and the rotation of the output shaft of the rotary driver (37) is used to drive the rotary driver (35) to swing.

5. The device for measuring the waviness of a thrust ball bearing raceway according to claim 4, characterized in that: A linear adjustment mechanism (6) is arranged in the workbench (1), and the linear adjustment mechanism (6) comprises an auxiliary frame (61), the auxiliary frame (61) is slidably arranged in the workbench (1), a second linear drive (62) is fixedly arranged on the auxiliary frame (61), a moving seat (63) is slidably arranged on the output end of the second linear drive (62), and the measuring instrument (2) is fixedly arranged on the moving seat (63).

6. The device for measuring the waviness of a thrust ball bearing raceway according to claim 5, characterized in that: A linear drive three is fixedly arranged on the workbench (1), and an output end of the linear drive three is fixedly arranged on an auxiliary frame (61). A guide rail is also fixedly arranged on the workbench (1), and a slide seat is fixedly arranged on the auxiliary frame (61), and the slide seat is slidably arranged with the guide rail.

7. The device for measuring the waviness of a thrust ball bearing raceway according to claim 6, characterized in that: A first transverse plate is fixedly arranged on the adapting hollow shaft (52), a second transverse plate is fixedly arranged on the inner wall of the marking liquid storage tube (51), the adapting hollow shaft (52) and the second transverse plate are slidably arranged, the second elastic member (53) is fixedly arranged at the bottom of the first transverse plate, and the bottom end of the second elastic member (53) is fixedly arranged at the top of the second transverse plate.

8. The device for measuring the waviness of a thrust ball bearing raceway according to claim 7, characterized in that: The flow channel (511) comprises a vertical groove and two horizontal through holes, the two horizontal through holes are both connected to the vertical groove, and the two horizontal through holes are both located on one side of the same vertical groove, and the liquid inlet hole (521) is located between the two corresponding horizontal through holes.

9. The device for measuring the waviness of a thrust ball bearing raceway according to claim 8, characterized in that: A support seat is fixedly provided on both the fastening plate 1 (31) and the fastening plate 2 (32). The support seat is located on a side where the fastening plate 1 (31) and the fastening plate 2 (32) are close to each other. The support seat is used to support the shaft ring workpiece (7).

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