Lead screw bearing press fitting device and method
By designing a screw bearing press-fitting device including a clamping component and a press-fitting component, the problem of loose contact between the bearing and the end face of the screw is solved, and close contact between the bearing and the screw is achieved, avoiding jitter and ensuring the normal operation of the screw.
Patent Information
- Application Number
- CN202511102295.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-07
- Publication Date
- 2025-10-17
AI Technical Summary
During the press-fitting process of the screw bearing, the bearing is not in close contact with the end face of the screw, causing the bearing to vibrate on the screw, affecting the normal operation of the screw.
A screw bearing press-fitting device is used, which includes a workbench, a clamping component, a support seat, a positioning sleeve and a press-fitting component. The screw is fixed by the clamping component, and the cylinder and motor are used to drive the pressing plate and the clamping plate to make the bearing in close contact with the end face of the screw and fixed by a locking nut.
A close contact between the bearing and the end face of the screw is achieved, which prevents the bearing from shaking on the screw and ensures the normal operation of the screw.
Smart Images
Figure CN120791379A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of bearing press-fitting device, in particular to a screw bearing press-fitting device and method. BACKGROUND
[0002] Ball screw is the most commonly used transmission element in tooling machinery and precision machinery, its main function is to convert rotary motion into linear motion, or to convert torque into axial repeated force, while having high precision, reversibility and high efficiency. Because of its small friction resistance, ball screw is widely used in various industrial equipment and precision instruments.
[0003] In order to ensure the stability and service life of the screw, bearings are generally installed at the end of the screw during use to reduce friction during use of the screw and enhance the stability of the screw during use, thereby increasing the service life of the screw. However, when the screw bearing is press-fitted, the contact between the bearing and the end face of the screw is not tight enough, which causes the bearing to vibrate on the screw during work, thereby affecting the normal operation of the screw. SUMMARY
[0004] The purpose of the present application is to provide a screw bearing press-fitting device and method, which can make the bearing and the end face of the screw tightly contact when the screw bearing is press-fitted, avoid the bearing vibrating on the screw during work, and make the screw operate normally.
[0005] To achieve the above purpose, in the first aspect, the present application provides a screw bearing press-fitting device, comprising a workbench and a press-fitting assembly, the press-fitting assembly comprising a clamping part, a support seat, a positioning sleeve and two press-fitting parts.
[0006] The clamping part is arranged on the top of the workbench, the support seat is fixedly connected with the workbench and located on the top of the workbench, the positioning sleeve is fixedly connected with the support seat and located on the top of the support seat, and the two press-fitting parts are located on both sides of the clamping part. The press-fitting part comprises a lifting part, a bracket, a first air cylinder, a pressing piece, a second air cylinder and a clamping plate. The lifting part is arranged on the top of the workbench, the bracket is arranged on the side edge of the lifting part, the first air cylinder is fixedly connected with the bracket and located on the side edge of the bracket, the pressing piece is fixedly connected with the output rod of the first air cylinder and located on the side edge of the first air cylinder, the second air cylinder is fixedly connected with the bracket and located on the side edge of the bracket, and the clamping plate is fixedly connected with the output rod of the second air cylinder and located on the side edge of the second air cylinder.
[0007] The clamping component comprises a guide rail, a bidirectional screw rod, two sliding blocks and two clamping pieces.
[0008] The clamping component further comprises a first motor, the first motor is fixedly connected with the guide rail, and the output end of the first motor is fixedly connected with the bidirectional screw rod and located at the side of the guide rail.
[0009] The clamping piece comprises a supporting rod, a supporting plate and an anti-abrasion pad, the supporting rod is fixedly connected with the sliding block and located at the top of the sliding block, the supporting plate is fixedly connected with the supporting rod and located at the side of the supporting rod, and the anti-abrasion pad is fixedly connected with the supporting plate and located at the side of the supporting plate.
[0010] The lifting part comprises a guide rod, a top plate, a moving block and a screw rod, the guide rod is fixedly connected with the workbench and located at the top of the workbench, the top plate is fixedly connected with the guide rod and located at the top of the guide rod, the moving block is slidably connected with the guide rod and located at the side of the guide rod, and the screw rod is rotatably connected with the top plate and threadedly connected with the moving block and located at the bottom of the top plate.
[0011] The lifting part further comprises a second motor, the second motor is fixedly connected with the top plate, and the output end of the second motor is fixedly connected with the screw rod and located at the top of the top plate.
[0012] In the second aspect, the present application further provides a screw rod bearing press fitting method applied to the screw rod bearing press fitting device.
[0013] One end of the screw rod is placed in the positioning sleeve, and the clamping component is controlled to clamp and fix the screw rod;
[0014] The bearing is placed on the top of the screw rod, and the inner ring of the bearing is sleeved outside the connecting end of the top of the screw rod;
[0015] The first cylinder is controlled to drive the pressing plate to move to the side of the connecting end of the screw rod, then the lifting part drives the bracket to move downward, the pressing plate drives the bearing to move downward to the end face of the screw rod, and the lower surface of the bearing is pressed against the end face of the screw rod;
[0016] The second cylinder is controlled to drive the clamping plate to approach the bearing, the position of the bearing is clamped and fixed, and then the first cylinder drives the pressing plate to move away from the bearing;
[0017] The locking nut is screwed on the threaded end on the top of the connecting end, so as to press the bearing on the lead screw.
[0018] The present application is a kind of lead screw bearing press fitting device and method, the end of the lead screw is provided with a smooth connecting end, the outer diameter of the connecting end is less than the outer diameter of the lead screw, a threaded end is provided at the end of the connecting end away from the lead screw, and the surface of the threaded end is provided with threads matched with the locking nut; when the bearing is press fitted, the end of the lead screw is placed in the positioning sleeve, the lead screw is kept upright, then the clamping part controls the lead screw to be clamped and fixed to prevent the lead screw from moving; then the bearing to be press fitted is placed from the top of the lead screw, the outer ring of the bearing is sleeved on the outside of the connecting end; then the first cylinder drives the pressing plate to translate and approach the connecting end until the pressing plate is above the bearing, then the bracket is driven to move down by the lifting part, the first cylinder and the second cylinder are driven to move down by the bracket, the pressing plate is driven to move down by the first cylinder, the pressing plate presses the bearing down, the lower surface of the bearing is in close contact with the end surface of the lead screw; then the two clamping plates are controlled to approach the bearing to clamp and fix the bearing, then the first cylinder drives the pressing plate away from the bearing; finally, the locking nut is screwed on the threaded end on the top of the connecting end by the worker, so as to press the bearing on the lead screw; the present application can make the bearing and the end surface of the lead screw in close contact when the lead screw bearing is press fitted, avoid the bearing from shaking on the lead screw during work, and make the lead screw work normally. BRIEF DESCRIPTION OF DRAWINGS
[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or prior art description will be briefly introduced.
[0020] Fig. 1 is a structural schematic view of a first embodiment of a lead screw bearing press fitting device of the present application.
[0021] Fig. 2 is a front view of the first embodiment of the lead screw bearing press fitting device of the present application.
[0022] Fig. 3 is a structural schematic view of a clamping part of the lead screw bearing press fitting device of the present application.
[0023] Fig. 4 is a structural schematic view of a second embodiment of the lead screw bearing press fitting device of the present application.
[0024] Fig. 5 is a structural schematic view of a lead screw of the present application.
[0025] Fig. 6 is a flow chart of a lead screw bearing press fitting method of the present application.
[0026] 101 - workbench, 102 - press-fitting assembly, 103 - clamping component, 104 - support seat, 105 - positioning sleeve, 106 - press-fitting component, 107 - lifting part, 108 - support, 109 - first air cylinder, 110 - pressing piece, 111 - second air cylinder, 112 - clamping plate, 113 - guide rail, 114 - bidirectional threaded screw rod, 115 - sliding block, 116 - clamping piece, 117 - first motor, 118 - support rod, 119 - support plate, 120 - wear-resistant pad, 121 - guide rod, 122 - top plate, 123 - moving block, 124 - screw rod, 125 - second motor, 201 - fixing assembly, 202 - fixing plate, 203 - fixing bolt, 301 - screw rod, 302 - connecting end, 303 - threaded end. DETAILED DESCRIPTION
[0027] Embodiments of the present application are described in detail below with reference to the attached drawings, which are examples of embodiments of the present application, and are described by way of example with reference to the accompanying drawings, which are intended to explain the present application, and are not to be construed as limiting the present application.
[0028] In a first aspect, the present application provides a screw rod bearing press-fitting device, and a first embodiment of the screw rod bearing press-fitting device of the present application is as follows:
[0029] Please refer to Figs. 1-3 , and Fig. 5 , the present application provides a screw rod bearing press-fitting device, which comprises a workbench 101 and a press-fitting assembly 102, the press-fitting assembly 102 comprises a clamping component 103, a support seat 104, a positioning sleeve 105 and two press-fitting components 106; the press-fitting component 106 comprises a lifting part 107, a support 108, a first air cylinder 109, a pressing piece 110, a second air cylinder 111 and a clamping plate 112; the clamping component 103 comprises a guide rail 113, a bidirectional threaded screw rod 114, two sliding blocks 115, two clamping pieces 116 and a first motor 117; the clamping piece 116 comprises a support rod 118, a support plate 119 and a wear-resistant pad 120; the lifting part 107 comprises a guide rod 121, a top plate 122, a moving block 123, a screw rod 124 and a second motor 125; through the foregoing scheme, the bearing and the end face of the screw rod 301 can be in close contact when the screw rod bearing is press-fitted, so that the bearing does not vibrate on the screw rod 301 during work, and the screw rod 301 can operate normally.
[0030] For this specific embodiment, the clamping component 103 is arranged on the top of the workbench 101; the support base 104 is fixedly connected with the workbench 101 and arranged on the top of the workbench 101; the positioning sleeve 105 is fixedly connected with the support base 104 and arranged on the top of the support base 104; two pressing components 106 are arranged on the two sides of the clamping component 103, and each of the pressing components 106 comprises a lifting part 107, a support 108, a first air cylinder 109, a pressing plate 110, a second air cylinder 111 and a clamping plate 112; the lifting part 107 is arranged on the top of the workbench 101; the support 108 is arranged on the side of the lifting part 107; the first air cylinder 109 is fixedly connected with the support 108 and arranged on the side of the support 108; the pressing plate 110 is fixedly connected with the output rod of the first air cylinder 109 and arranged on the side of the first air cylinder 109; the second air cylinder 111 is fixedly connected with the support 108 and arranged on the side of the support 108; and the clamping plate 112 is fixedly connected with the output rod of the second air cylinder 111 and arranged on the side of the second air cylinder 111. A smooth connecting end 302 is arranged on the end of the lead screw 301, the outer diameter of the connecting end 302 is smaller than that of the lead screw 301, a threaded end 303 is arranged on the end of the connecting end 302 away from the lead screw 301, and the surface of the threaded end 303 is provided with threads matched with the locking nut; when the bearing is pressed, the one end of the lead screw 301 is placed in the positioning sleeve 105, so that the lead screw 301 is kept upright, then the clamping component 103 is controlled to clamp and fix the lead screw 301, so as to prevent the lead screw 301 from moving; then the bearing to be pressed is placed on the top of the lead screw 301, so that the outer ring of the bearing is sleeved outside the connecting end 302; then the first air cylinder 109 is controlled to drive the pressing plate 110 to translate and approach the connecting end 302, until the pressing plate 110 is above the bearing, then the lifting part 107 is controlled to drive the support 108 to move downward, the support 108 drives the first air cylinder 109 and the second air cylinder 111 to move downward, the first air cylinder 109 drives the pressing plate 110 to move downward, the pressing plate 110 presses the bearing downward, so that the lower surface of the bearing is in close contact with the end surface of the lead screw 301; then the two second air cylinders 111 and the two clamping plates 112 are controlled to approach the bearing to clamp and fix the bearing, then the first air cylinder 109 is controlled to drive the pressing plate 110 to move away from the bearing; finally, the locking nut is tightened on the threaded end 303 on the top of the connecting end 302 by the worker, so as to press the bearing on the lead screw 301; the bearing and the end surface of the lead screw 301 are in close contact when the lead screw bearing is pressed, so as to avoid the bearing from shaking on the lead screw 301 during work, and the lead screw 301 can normally work.
[0031] The guide rail 113 is fixedly connected with the workbench 101 and located on the top of the workbench 101; the bidirectional screw rod 114 is rotatably connected with the guide rail 113 and located on the inner side of the guide rail 113; the two sliding blocks 115 are slidably connected with the guide rail 113 respectively and threadedly connected with the bidirectional screw rod 114 respectively and located on the side edges of the bidirectional screw rod 114 respectively; and the two clamping pieces 116 are arranged on the top of the two sliding blocks 115 respectively. The two ends of the bidirectional screw rod 114 are provided with threads in opposite directions, the two sliding blocks 115 are arranged at the two ends in opposite directions of the bidirectional screw rod 114, and the bidirectional screw rod 114 is rotated in the positive direction to enable the two sliding blocks 115 to move towards each other, so that the two clamping pieces 116 are driven to move towards each other and the lead screw 301 is clamped and fixed.
[0032] Secondly, the first motor 117 is fixedly connected with the guide rail 113, and the output end of the first motor 117 is fixedly connected with the bidirectional screw rod 114 and located on the side edge of the guide rail 113. The first motor 117 is used for providing power to drive the bidirectional screw rod 114 to rotate.
[0033] Meanwhile, the supporting rod 118 is fixedly connected with the sliding block 115 and located on the top of the sliding block 115; the supporting plate 119 is fixedly connected with the supporting rod 118 and located on the side edge of the supporting rod 118; and the anti-abrasion pad 120 is fixedly connected with the supporting plate 119 and located on the side edge of the supporting plate 119. The supporting rod 118 is used for supporting the supporting plate 119 and the anti-abrasion pad 120, and the anti-abrasion pad 120 can prevent the lead screw 301 from being abraded.
[0034] In addition, the guide rod 121 is fixedly connected with the workbench 101 and located on the top of the workbench 101; the top plate 122 is fixedly connected with the guide rod 121 and located on the top of the guide rod 121; the moving block 123 is slidably connected with the guide rod 121 and located on the side edge of the guide rod 121; and the screw rod 124 is rotatably connected with the top plate 122 and threadedly connected with the moving block 123 and located on the bottom of the top plate 122. The guide rod 121 is used for providing guidance for the moving block 123, the screw rod 124 is rotated to enable the moving block 123 to move longitudinally along the guide rod 121, so that the height position of the support 108 can be adjusted.
[0035] Finally, the second motor 125 is fixedly connected with the top plate 122, and the output end of the second motor 125 is fixedly connected with the screw rod 124 and located on the top of the top plate 122. The second motor 125 is used for providing power to drive the screw rod 124 to rotate.
[0036] In use of the present application, a smooth connecting end 302 is arranged at the end of the lead screw 301, the outer diameter of the connecting end 302 is smaller than that of the lead screw 301, a threaded end 303 is arranged at the end of the connecting end 302 away from the lead screw 301, and the surface of the threaded end 303 is provided with threads matched with the lock nut; when the bearing is pressed, the end of the lead screw 301 is placed in the positioning sleeve 105, the lead screw 301 is kept upright, then the first motor 117 is controlled to drive the bidirectional threaded lead screw 114 to rotate in the positive direction, so that the two sliding blocks 115 are close to each other, the two sliding blocks 115 drive the two clamping pieces 116 to be close to each other, the lead screw 301 is clamped and fixed to prevent the lead screw 301 from moving; then the bearing to be pressed is placed on the top of the lead screw 301, and the outer ring of the bearing is sleeved outside the connecting end 302; then the first cylinder 109 is controlled to drive the pressing plate 110 to translate and be close to the connecting end 302, until the pressing plate 110 is above the bearing, then the second motor 125 is controlled to drive the screw rod 124 to rotate in the positive direction, so that the moving block 123 moves longitudinally along the guide rod 121, the bracket 108 is driven by the moving block 123 to move downward, the first cylinder 109 and the second cylinder 111 are driven by the bracket 108 to move downward, the pressing plate 110 is driven by the first cylinder 109 to move downward, and the pressing plate 110 presses the bearing to make the lower surface of the bearing tightly contact with the end surface of the lead screw 301; then the two second cylinders 111 and the two clamping plates 112 are controlled to be close to the bearing to clamp and fix the bearing, then the first cylinder 109 is controlled to drive the pressing plate 110 to move away from the bearing; finally, the lock nut is tightened on the threaded end 303 at the top of the connecting end 302 by the worker, so that the bearing is pressed on the lead screw 301; the present application can make the bearing tightly contact with the end surface of the lead screw 301 when the lead screw bearing is pressed, avoid the bearing from shaking on the lead screw 301 during work, and make the lead screw 301 work normally.
[0037] A second embodiment of the lead screw bearing pressing device of the present application is:
[0038] Based on the first embodiment, please refer to Figs. 4-5 The lead screw bearing pressing device provided by the present application further comprises a plurality of fixing assemblies 201.
[0039] For the specific embodiment, the plurality of fixing assemblies 201 are arranged at the side edges of the workbench 101. The workbench 101 can be fixed on the work surface by the plurality of fixing assemblies 201 to prevent the workbench 101 from moving.
[0040] The fixed plate 202 is fixedly connected with the workbench 101 and located at the side of the workbench 101; and the fixed bolt 203 is threadedly connected with the fixed plate 202 and penetrates through the fixed plate 202. A screw hole matched with the fixed bolt 203 is formed on a working surface, and the fixed plate 202 can be fixed on the working surface through the fixed bolt 203.
[0041] When the present application is used, a screw hole matched with the fixed bolt 203 is formed on a working surface, and the fixed plate 202 can be fixed on the working surface through the fixed bolt 203, so that the workbench 101 can be fixed on the working surface and the movement of the workbench 101 can be prevented.
[0042] In the second aspect, referring to Fig. 6 The present application further provides a screw bearing press fitting method, which comprises the following steps:
[0043] S1, one end of the screw 301 is placed in the positioning sleeve 105, and the clamping part 103 is controlled to clamp and fix the screw 301;
[0044] The end of the screw 301 is provided with a smooth connecting end 302, the outer diameter of the connecting end 302 is smaller than that of the screw 301, the connecting end 302 is provided with a threaded end 303 at the end away from the screw 301, and the surface of the threaded end 303 is provided with threads matched with the lock nut; when the bearing is press fitted, one end of the screw 301 is placed in the positioning sleeve 105, the screw 301 is kept upright, and then the clamping part 103 is controlled to clamp and fix the screw 301, so that the movement of the screw 301 is prevented.
[0045] S2, the bearing is placed from the top of the screw 301, and the inner ring of the bearing is sleeved outside the connecting end 302 at the top of the screw 124;
[0046] Then, the bearing to be press fitted is placed from the top of the screw 301, and the outer ring of the bearing is sleeved outside the connecting end 302.
[0047] S3, the first cylinder 109 is controlled to drive the pressing plate 110 to move to the side of the connecting end 302 of the screw 301, then the lifting part 107 drives the bracket 108 to move downward, the pressing plate 110 drives the bearing to move downward to the end face of the screw 301, and the lower surface of the bearing is pressed against the end face of the screw 301;
[0048] Then the first cylinder 109 is controlled to drive the pressing plate 110 to translate and approach the connecting end 302 until the pressing plate 110 is above the bearing, then the support 108 is driven to move down by the lifting part 107, the first cylinder 109 and the second cylinder 111 are driven to move down by the support 108, the pressing plate 110 is driven to move down by the first cylinder 109, and the bearing is pressed down by the pressing plate 110, so that the lower surface of the bearing is in close contact with the end surface of the lead screw 301.
[0049] S4 controls the second cylinder 111 to drive the clamping plate 112 to approach the bearing to clamp and fix the position of the bearing, and then the first cylinder 109 drives the pressing plate 110 to move away from the bearing.
[0050] Then the two clamping plates 112 are controlled to approach the bearing to clamp and fix the bearing, and then the first cylinder 109 is controlled to drive the pressing plate 110 to move away from the bearing.
[0051] S5 tightens the locking nut on the threaded end 303 on the top of the connecting end 302, so as to press the bearing on the lead screw 301.
[0052] Finally, the staff tightens the locking nut on the threaded end 303 on the top of the connecting end 302, so as to press the bearing on the lead screw 301.
[0053] The lead screw bearing pressing method can make the bearing and the end surface of the lead screw 301 in close contact when the lead screw bearing is pressed, avoid the bearing from shaking on the lead screw 301 during work, and make the lead screw 301 work normally.
[0054] The above only discloses one or more preferred embodiments of the application, and cannot limit the scope of the application. Those skilled in the art can understand that the above-mentioned all or part of the processes can be implemented, and equivalent changes made according to the claims of the application still belong to the scope covered by the application.
Claims
1. A screw bearing press-fitting device, comprising a workbench, characterized in that: Also included are press-fit assemblies; The press-fit assembly includes a clamping component, a support seat, a positioning sleeve and two press-fit components; The clamping component is arranged on the top of the workbench; the support seat is fixedly connected to the workbench and is located on the top of the workbench; the positioning sleeve is fixedly connected to the support seat and is located on the top of the support seat; the two press-fitting components are located on both sides of the clamping component, and the press-fitting components include a lifting part, a bracket, a first cylinder, a pressing piece, a second cylinder and a splint; the lifting part is arranged on the top of the workbench; the bracket is arranged on the side of the lifting part; the first cylinder and the bracket are fixedly connected and are located on the side of the bracket; the pressing piece and the output rod of the first cylinder are fixedly connected and are located on the side of the first cylinder; the second cylinder and the bracket are fixedly connected and are located on the side of the bracket; the splint and the output rod of the second cylinder are fixedly connected and are located on the side of the second cylinder.
2. The screw bearing press-fitting device according to claim 1, characterized in that: The clamping component includes a guide rail, a bidirectional threaded screw, two sliders and two clamping pieces; the guide rail is fixedly connected to the workbench and is located on the top of the workbench; the bidirectional threaded screw is rotatably connected to the guide rail and is located on the inner side of the guide rail; the two sliders are respectively slidably connected to the guide rail, and are respectively threadedly connected to the bidirectional threaded screw, and are respectively located on the sides of the bidirectional threaded screw; the two clamping pieces are respectively arranged on the top of the two sliders.
3. The screw bearing press-fitting device according to claim 2, wherein: The clamping component also includes a first motor; the first motor is fixedly connected to the guide rail, and the output end of the first motor is fixedly connected to the bidirectional threaded screw and is located on the side of the guide rail.
4. The screw bearing press-fitting device according to claim 3, wherein: The clamping member includes a support rod, a support plate and an anti-wear pad; the support rod is fixedly connected to the slider and is located on the top of the slider; the support plate is fixedly connected to the support rod and is located on the side of the support rod; the anti-wear pad is fixedly connected to the support plate and is located on the side of the support plate.
5. The screw bearing press-fitting device according to claim 4, characterized in that: The lifting part includes a guide rod, a top plate, a moving block and a screw rod; the guide rod is fixedly connected to the workbench and is located on the top of the workbench; the top plate is fixedly connected to the guide rod and is located on the top of the guide rod; the moving block is slidingly connected to the guide rod and is located on the side of the guide rod; the screw rod is rotatably connected to the top plate, is threadedly connected to the moving block, and is located at the bottom of the top plate.
6. The screw bearing press-fitting device according to claim 5, characterized in that: The lifting part also includes a second motor; the second motor is fixedly connected to the top plate, and the output end of the second motor is fixedly connected to the screw and is located on the top of the top plate.
7. A screw bearing press-fitting method, applied to the screw bearing press-fitting device according to any one of claims 1 to 6, characterized in that: include: Place one end of the lead screw in the positioning sleeve and control the clamping component to clamp and fix the lead screw; Insert the bearing from the top of the screw so that the inner ring of the bearing is on the outside of the connecting end at the top of the screw; Control the first cylinder to drive the pressing piece to move to the side of the connecting end of the screw, and then the lifting part drives the bracket to move downward, so that the pressing piece drives the bearing to move downward to the end face of the screw, so that the lower surface of the bearing is pressed against the end face of the screw; Control the second cylinder to drive the clamping plate close to the bearing to clamp the bearing in place, and then the first cylinder drives the pressing plate away from the bearing; Tighten the lock nut onto the threaded end at the top of the connector to press fit the bearing onto the screw.