A turntable bearing and a machining process for the teeth of its outer ring

Abstract

The application belongs to the field of rotary table bearing processing, and particularly relates to a rotary table bearing and a processing technology for outer ring teeth of the rotary table bearing, wherein the rotary table bearing comprises a bearing inner ring and a bearing outer ring, the bearing outer ring is rotatably sleeved in the bearing inner ring, an outer ring plate is sleeved on the bearing outer ring, a plurality of outer ring teeth are uniformly distributed around the circular ring of the outer ring plate, an installation assembly is arranged on each of the plurality of outer ring teeth, the outer ring teeth are connected with the outer ring plate through the installation assembly, a positioning mechanism is arranged on the outer ring plate, the outer ring plate is connected with the bearing outer ring through the positioning mechanism, and the installation assembly comprises an installation plate which is fixedly installed on one side of the outer ring tooth. The rotary table bearing can process the outer ring teeth separately, the connection between the outer ring teeth and the outer ring plate is flexible, one of the outer ring teeth is convenient to replace, the structure design is more reasonable, and the processing difficulty is smaller.

Description

Technical Field

[0001] This invention relates to the field of rotary table bearing processing technology, and in particular to a rotary table bearing and its outer ring gear processing technology. Background Technology

[0002] Slewing bearings are large bearings with special structures that can simultaneously withstand large axial loads, radial loads, and overturning moments, integrating multiple functions such as support, rotation, transmission, and fixation. In engineering machinery and other applications with high precision requirements, the precision of the slewing bearings used in the spindles of rotary machine tools is also required to be high. In the design of high-precision machine tool rotary tables, the outer ring of the slewing bearing is toothed and used in conjunction with the pinion of the equipment.

[0003] In traditional design processes, the machining shape and precision of the spindle bearing gear must be determined before grinding the pinion to match it. However, since spindle bearings are mostly large turntable bearings, disassembly and installation are inconvenient and machining efficiency is low. A search revealed a machining process for the outer ring gear of a turntable bearing, which involves configuring a toothed plate on the outer ring of the bearing, mounting the toothed plate on the end face of the outer ring, and machining the outer gear together with the outer ring. By installing a toothed plate on the outer ring of the turntable bearing and machining the outer gear together with the outer ring, the problem of inconvenient disassembly and installation when machining the outer ring gear of the turntable bearing is solved, resulting in high machining efficiency.

[0004] However, when assembling the outer ring teeth of existing rotary table bearings, the outer ring needs to be installed on the rotary table bearing first before the teeth are machined. The connection with the outer ring teeth is relatively fixed. If individual teeth are damaged, the entire outer ring needs to be replaced and re-machined. The structural design is unreasonable and the machining is also difficult. Summary of the Invention

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A rotary table bearing includes an inner ring and an outer ring, wherein the outer ring is rotatably fitted inside the inner ring.

[0007] An outer ring plate is fitted on the outer ring of the bearing. Several outer ring teeth are evenly distributed around the circumference of the outer ring plate. Each of the outer ring teeth is provided with a mounting component. The outer ring teeth are connected to the outer ring plate through the mounting components.

[0008] The outer ring plate is provided with a positioning mechanism, and the outer ring plate is connected to the outer ring of the bearing through the positioning mechanism;

[0009] The installation components include:

[0010] Mounting plate, the mounting plate is fixedly mounted on one side of the outer ring tooth, the outer ring plate has a mounting groove, and the mounting plate is mounted in the mounting groove;

[0011] A movable plate, wherein a fixing groove is provided on one side of the mounting plate, and the movable plate is slidably mounted on the inner wall of the fixing groove;

[0012] Three limiting blocks are fixedly installed on one side of the movable plate. Three limiting grooves are provided on one side inner wall of the mounting groove, and the limiting blocks are installed in the corresponding limiting grooves.

[0013] Specifically, a threaded groove is provided on one side of the movable plate, and a lead screw is rotatably connected to the inner wall of one side of the fixed groove. The lead screw is threaded into the threaded groove. A groove is provided at the top of the outer ring tooth, and a cross screw head is provided in the groove. A connecting groove is provided on the inner wall of the bottom of the groove. A rotating rod is rotatably installed on the inner wall of the connecting groove. One end of the rotating rod is fixedly installed at the bottom of the cross screw head. A worm gear is fixedly sleeved on the rotating rod. One end of the lead screw extends into the connecting groove and a worm wheel is fixedly installed thereon. The worm gear meshes with the worm wheel.

[0014] Specifically, the positioning mechanism includes several positioning plates, several control slots are provided on the inner side of the outer ring plate, and positioning plates are slidably installed in each of the several control slots. Several positioning slots are provided on the outer side of the bearing outer ring, and the positioning plates are installed in the corresponding positioning slots.

[0015] Specifically, each of the positioning plates has a threaded groove on one side, and a lead screw is rotatably connected to the inner wall of the control groove. The lead screw is threaded into the corresponding threaded groove.

[0016] Specifically, the outer ring plate has several adjustment grooves on its outer side, and a drive gear is rotatably installed on the inner wall of each adjustment groove. A bevel gear II is fixedly installed on each of the drive gears, and a bevel gear I is fixedly installed at one end of each of the lead screws I. The bevel gear I meshes with the corresponding bevel gear II.

[0017] Specifically, a control ring plate is sleeved on the outer ring plate, an internal gear is fixedly installed on the inner side of the control ring plate, the internal gear meshes with several drive gears simultaneously, an auxiliary bearing is fixedly installed on the inner side of the control ring plate, and the outer ring plate is fixedly installed on the inner ring of the auxiliary bearing.

[0018] Specifically, a rotating block is fixedly connected to the bottom of the drive gear, and a rotating groove is provided on the inner wall of the adjusting groove, with the rotating block rotatably installed in the rotating groove.

[0019] The present invention also provides a machining process for the outer ring teeth described above, comprising the following steps:

[0020] S1: Select appropriate materials and design suitable tooth profiles and pitches according to specific application requirements;

[0021] S2: Pre-process the material, cut it into appropriate shapes and sizes, and pre-process the material into approximate tooth shapes and sizes through turning and milling. Use gear cutters to perform fine machining of the tooth shape, and perform heat treatment on the machined teeth to improve their hardness and wear resistance.

[0022] S3: Further improve the precision and surface quality of the teeth through grinding, round the tooth ends, remove burrs and sharp edges on the tooth surface to make it easy to engage, weld the trapezoidal mounting plate to the side of the outer ring tooth, and assemble the remaining parts.

[0023] S4: Insert the mounting plate into the mounting slot, use a screwdriver to turn the Phillips head screw head, the Phillips head screw head drives the worm gear on the rotating rod to rotate, the worm gear drives the worm wheel and the lead screw two to rotate, the lead screw two drives the moving plate to move, the moving plate drives the limit block to move, the limit block is inserted into the limit slot, which can fix the position of the outer ring teeth on the outer ring plate, and install the remaining outer ring teeth in sequence;

[0024] S5: Install the outer ring plate with the outer ring teeth on the outer ring of the bearing, rotate the control ring plate, the control ring plate drives the inner gear to rotate, the inner gear drives the drive gear to rotate, the drive gear drives the second bevel gear to rotate, the second bevel gear drives the first bevel gear to rotate, the first bevel gear drives the first lead screw to rotate, the first lead screw drives the positioning plate to move, the positioning plate inserts into the corresponding positioning groove, and the outer ring plate is fixed on the outer ring of the bearing.

[0025] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0026] (1) A turntable bearing and its outer ring gear processing technology of the present invention. When assembling the outer ring gear of the turntable bearing, the outer ring gear can be processed separately. The connection between the outer ring gear and the outer ring plate is more flexible and it is convenient to replace one of the outer ring gears. The structure design is more reasonable and the processing is less difficult.

[0027] (2) The rotary table bearing and its outer ring gear processing technology of the present invention are provided. The outer ring plate and the outer ring of the bearing are connected in a detachable manner. Not only can the outer ring plate be replaced separately, but it can also be adapted to different bearings, and the compatibility of subsequent promotion and use is higher. Attached Figure Description

[0028] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0029] Figure 2 This is a schematic diagram of the main structure of the present invention;

[0030] Figure 3 This is a top view of the structure of the present invention;

[0031] Figure 4 for Figure 2 Enlarged view of point A in the middle;

[0032] Figure 5 for Figure 2 Enlarged view of point B in the middle.

[0033] In the picture:

[0034] 1. Bearing inner ring;

[0035] 2. Bearing outer ring;

[0036] 3. Outer ring plate; 301. Positioning plate; 302. Positioning groove; 303. Control groove; 304. Lead screw one; 305. Bevel gear one; 306. Drive gear; 307. Bevel gear two; 308. Control ring plate; 309. Internal gear; 310. Auxiliary bearing;

[0037] 4. Outer ring teeth; 401. Mounting plate; 402. Mounting groove; 403. Limiting groove; 404. Fixing groove; 405. Moving plate; 406. Limiting block; 407. Lead screw II; 408. Worm gear; 409. Groove; 410. Phillips head screw; 411. Connecting groove; 412. Rotating rod; 413. Worm gear. Detailed Implementation

[0038] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. However, it should be understood that these descriptions are exemplary only and are not intended to limit the scope of the invention. In the following detailed description, numerous specific details are set forth to provide a thorough understanding of the embodiments of the invention for ease of explanation. However, it will be apparent that one or more embodiments may be practiced without these specific details. Furthermore, descriptions of well-known structures and techniques are omitted in the following description to avoid unnecessarily obscuring the concept of the invention.

[0039] Reference Figure 1-5 A rotary table bearing includes an inner bearing ring 1 and an outer bearing ring 2, wherein the outer bearing ring 2 is rotatably fitted inside the inner bearing ring 1; an outer ring plate 3 is fitted on the outer bearing ring 2, and a plurality of outer ring teeth 4 are evenly distributed around the circumference of the outer ring plate 3; a positioning mechanism is provided on the outer ring plate 3, and the outer ring plate 3 is connected to the outer bearing ring 2 through the positioning mechanism; a mounting plate 401 is fixedly installed on one side of the outer ring teeth 4, and a mounting groove 402 is opened on the outer ring plate 3, wherein the mounting plate 401 is installed in the mounting groove 402; a fixing groove 404 is opened on one side of the mounting plate 401, and a movable plate 405 is slidably installed on the inner wall of the fixing groove 404; three limiting blocks 406 are all fixedly installed on one side of the movable plate 405; three limiting grooves 403 are opened on one side of the inner wall of the mounting groove 402, and the limiting blocks 406 are installed in the corresponding limiting grooves 403.

[0040] The moving plate 405 drives the limiting block 406 to move, and the limiting block 406 is inserted into the limiting groove 403, which can fix the position of the outer ring tooth 4 on the outer ring plate 3.

[0041] Reference Figure 5 In this embodiment, a threaded groove is provided on one side of the movable plate 405. A lead screw 407 is rotatably connected to the inner wall of one side of the fixed groove 404. The lead screw 407 is threaded into the threaded groove. A groove 409 is provided at the top of the outer ring tooth 4. A cross screw head 410 is provided in the groove 409. A connecting groove 411 is provided on the inner wall of the bottom of the groove 409. A rotating rod 412 is rotatably installed on the inner wall of the connecting groove 411. One end of the rotating rod 412 is fixedly installed at the bottom of the cross screw head 410. A worm gear 413 is fixedly sleeved on the rotating rod 412. One end of the lead screw 407 extends into the connecting groove 411 and a worm wheel 408 is fixedly installed thereon. The worm gear 413 meshes with the worm wheel 408.

[0042] Insert the mounting plate 401 into the mounting slot 402, and use a screwdriver to turn the Phillips head 410. The Phillips head 410 drives the worm gear 413 on the rotating rod 412 to rotate. The worm gear 413 drives the worm wheel 408 and the lead screw 407 to rotate. The lead screw 407 drives the moving plate 405 to move.

[0043] Reference Figure 4 In this embodiment, the positioning mechanism includes several positioning plates 301. Several control grooves 303 are provided on the inner side of the outer ring plate 3. Positioning plates 301 are slidably installed in each of the several control grooves 303. Several positioning grooves 302 are provided on the outer side of the bearing outer ring 2. The positioning plates 301 are installed in the corresponding positioning grooves 302. A threaded groove is provided on one side of each of the several positioning plates 301. A lead screw 304 is rotatably connected to the inner wall of each of the several control grooves 303. The lead screw 304 is threadedly connected to the corresponding threaded groove.

[0044] The positioning plate 301 is moved by the lead screw 304, and the positioning plate 301 is inserted into the corresponding positioning groove 302, which can fix the outer ring plate 3 to the outer ring 2 of the bearing.

[0045] Reference Figure 4In this embodiment, the outer ring plate 3 has several adjustment grooves on its outer side. A drive gear 306 is rotatably mounted on the inner wall of each adjustment groove. A bevel gear 307 is fixedly mounted on each drive gear 306. A bevel gear 305 is fixedly mounted on one end of each lead screw 304. The bevel gear 305 meshes with the corresponding bevel gear 307. A rotating block is fixedly connected to the bottom of the drive gear 306. A rotating groove is formed on the inner wall of the adjustment groove, and the rotating block is rotatably mounted within the rotating groove. A control ring plate 308 is sleeved on the outer ring plate 3. An internal gear 309 is fixedly mounted on the inner side of the control ring plate 308. The internal gear 309 meshes with several drive gears 306 simultaneously. An auxiliary bearing 310 is fixedly mounted on the inner side of the control ring plate 308, and the outer ring plate 3 is fixedly mounted on the inner ring of the auxiliary bearing 310.

[0046] Rotate the control ring plate 308, which drives the internal gear 309 to rotate. The internal gear 309 drives the drive gear 306 to rotate. The drive gear 306 drives the second bevel gear 307 to rotate. The second bevel gear 307 drives the first bevel gear 305 to rotate. The first bevel gear 305 drives the first lead screw 304 to rotate.

[0047] This embodiment also provides a machining process for outer ring teeth, including the following steps:

[0048] S1: Select appropriate materials and design suitable tooth profiles and pitches according to specific application requirements;

[0049] S2: Pre-process the material, cut it into appropriate shapes and sizes, and pre-process the material into approximate tooth shapes and sizes through turning and milling. Use gear cutters to perform fine machining of the tooth shape, and perform heat treatment on the machined teeth to improve their hardness and wear resistance.

[0050] S3: Further improve the precision and surface quality of the teeth by grinding, round the tooth ends, remove burrs and sharp edges on the tooth surface to make it easy to engage, weld the trapezoidal mounting plate 401 to the side of the outer ring tooth 4, and assemble the remaining parts.

[0051] S4: Insert the mounting plate 401 into the mounting slot 402, and use a screwdriver to turn the Phillips head 410. The Phillips head 410 drives the worm gear 413 on the rotating rod 412 to rotate. The worm gear 413 drives the worm wheel 408 and the lead screw 407 to rotate. The lead screw 407 drives the moving plate 405 to move. The moving plate 405 drives the limiting block 406 to move. The limiting block 406 is inserted into the limiting slot 403, which can fix the position of the outer ring tooth 4 on the outer ring plate 3. Install the remaining outer ring teeth 4 in sequence.

[0052] S5: Install the outer ring plate 3 with the outer ring gear 4 installed on the outer ring 2 of the bearing. Rotate the control ring plate 308, which drives the internal gear 309 to rotate. The internal gear 309 drives the drive gear 306 to rotate. The drive gear 306 drives the second bevel gear 307 to rotate. The second bevel gear 307 drives the first bevel gear 305 to rotate. The first bevel gear 305 drives the first lead screw 304 to rotate. The first lead screw 304 drives the positioning plate 301 to move. The positioning plate 301 is inserted into the corresponding positioning groove 302, thus fixing the outer ring plate 3 on the outer ring 2 of the bearing.

[0053] Working Principle: Selecting suitable materials and designing appropriate tooth profiles and pitches based on specific application requirements, the material is pre-treated and cut into appropriate shapes and sizes. Through turning and milling, the material is initially machined into approximate tooth profiles and sizes. Gear cutters are used for fine machining of the tooth profile. The machined teeth undergo heat treatment to improve their hardness and wear resistance. Grinding further improves the tooth precision and surface quality. The tooth ends are rounded to remove burrs and sharp edges, facilitating meshing. A trapezoidal mounting plate 401 is welded to the side of the outer ring tooth 4, and the remaining components are assembled. The mounting plate 401 is inserted into the mounting slot 402. A screwdriver is used to turn the Phillips head screw 410, which drives the worm gear 413 on the rotating rod 412 to rotate. The worm gear 413 drives the worm wheel. Rotating screws 408 and 407 causes the second screw to drive the moving plate 405 to move, which in turn drives the limiting block 406 to move. The limiting block 406 is inserted into the limiting groove 403, which fixes the position of the outer ring teeth 4 on the outer ring plate 3. The remaining outer ring teeth 4 are then installed in sequence. The outer ring plate 3 with the outer ring teeth 4 installed is then fitted onto the outer ring 2 of the bearing. Rotating the control ring plate 308 causes the internal gear 309 to rotate, which in turn drives the drive gear 306 to rotate. The drive gear 306 drives the second bevel gear 307 to rotate, which in turn drives the first bevel gear 305 to rotate. The first bevel gear 305 drives the first screw 304 to rotate, which in turn drives the positioning plate 301 to move. The positioning plate 301 is then inserted into the corresponding positioning groove 302, thus fixing the outer ring plate 3 onto the outer ring 2 of the bearing.

[0054] The technological advancements of this invention compared to the prior art are as follows: When assembling the outer ring teeth of the turntable bearing of this invention, the outer ring teeth 4 can be machined separately, the connection between the outer ring teeth 4 and the outer ring plate 3 is more flexible, and it is convenient to replace one of the outer ring teeth 4. The structural design is more reasonable and the machining is less difficult.

Claims

1. A turntable bearing, comprising an inner bearing ring (1) and an outer bearing ring (2), characterized in that, The outer ring (2) of the bearing is rotatably fitted inside the inner ring (1) of the bearing; The bearing outer ring (2) is fitted with an outer ring plate (3), and a number of outer ring teeth (4) are evenly distributed around the ring of the outer ring plate (3). Each of the outer ring teeth (4) is provided with a mounting component, and the outer ring teeth (4) are connected to the outer ring plate (3) through the mounting component. The outer ring plate (3) is provided with a positioning mechanism, and the outer ring plate (3) is connected to the outer ring (2) of the bearing through the positioning mechanism; The installation components include: Mounting plate (401), the mounting plate (401) is fixedly installed on one side of the outer ring tooth (4), the outer ring plate (3) is provided with mounting groove (402), and the mounting plate (401) is installed in the mounting groove (402); The movable plate (405) has a fixing groove (404) on one side of the mounting plate (401), and the movable plate (405) is slidably mounted on the inner wall of the fixing groove (404). Three limiting blocks (406) are fixedly installed on one side of the movable plate (405). Three limiting grooves (403) are provided on the inner wall of one side of the mounting groove (402). The limiting blocks (406) are installed in the corresponding limiting grooves (403).

2. A turntable bearing according to claim 1, characterized in that, The movable plate (405) has a threaded groove on one side. A screw rod (407) is rotatably connected to the inner wall of one side of the fixed groove (404). The screw rod (407) is threaded into the threaded groove. A groove (409) is provided at the top of the outer ring tooth (4). A cross screw head (410) is provided in the groove (409). A connecting groove (411) is provided on the inner wall of the bottom of the groove (409). A rotating rod (412) is rotatably installed on the inner wall of the connecting groove (411). One end of the rotating rod (412) is fixedly installed at the bottom of the cross screw head (410). A worm gear (413) is fixedly sleeved on the rotating rod (412). One end of the screw rod (407) extends into the connecting groove (411) and a worm wheel (408) is fixedly installed. The worm gear (413) meshes with the worm wheel (408).

3. A turntable bearing according to claim 2, characterized in that, The positioning mechanism includes several positioning plates (301), and several control slots (303) are opened on the inner side of the outer ring plate (3). The positioning plates (301) are slidably installed in the several control slots (303). Several positioning slots (302) are opened on the outer side of the bearing outer ring (2). The positioning plates (301) are installed in the corresponding positioning slots (302).

4. A turntable bearing according to claim 3, characterized in that, A threaded groove is provided on one side of several positioning plates (301), and a lead screw (304) is rotatably connected to the inner wall of several control grooves (303). The lead screw (304) is threadedly connected in the corresponding threaded groove.

5. A turntable bearing according to claim 4, characterized in that, The outer ring plate (3) has several adjustment slots on its outer side. Each adjustment slot has a drive gear (306) rotatably mounted on its inner wall. Each drive gear (306) has a bevel gear (307) fixedly mounted on its inner wall. Each screw (304) has a bevel gear (305) fixedly mounted on one end. The bevel gear (305) meshes with the corresponding bevel gear (307).

6. A turntable bearing according to claim 5, characterized in that, A control ring plate (308) is fitted on the outer ring plate (3). An internal gear (309) is fixedly installed on the inner side of the control ring plate (308). The internal gear (309) meshes with several drive gears (306) at the same time. An auxiliary bearing (310) is fixedly installed on the inner side of the control ring plate (308). The outer ring plate (3) is fixedly installed on the inner ring of the auxiliary bearing (310).

7. A turntable bearing according to claim 5, characterized in that, A rotating block is fixedly connected to the bottom of the drive gear (306), and a rotating groove is provided on the inner wall of the adjustment groove. The rotating block is rotatably installed in the rotating groove.

8. A processing method for a turntable bearing as described in claim 6, characterized in that, The machining process for the outer ring teeth includes the following steps: S1: Select appropriate materials and design suitable tooth profiles and pitches according to specific application requirements; S2: Pre-process the material, cut it into appropriate shapes and sizes, and process it into approximate tooth shapes and sizes through turning and milling. Use gear cutters to perform fine machining of the tooth shape, and heat treat the machined teeth to improve their hardness and wear resistance. S3: Further improve the precision and surface quality of the teeth by grinding, round the tooth ends, remove burrs and sharp edges on the tooth surface to make it easy to engage, weld the trapezoidal mounting plate (401) to the side of the outer ring tooth (4), and assemble the remaining parts. S4: Insert the mounting plate (401) into the mounting slot (402), and use a screwdriver to turn the Phillips head (410). The Phillips head (410) drives the worm (413) on the rotating rod (412) to rotate. The worm (413) drives the worm wheel (408) and the lead screw (407) to rotate. The lead screw (407) drives the moving plate (405) to move. The moving plate (405) drives the limit block (406) to move. The limit block (406) is inserted into the limit slot (403) to fix the position of the outer ring tooth (4) on the outer ring plate (3). Install the remaining outer ring teeth (4) in sequence. S5: Install the outer ring plate (3) with the outer ring teeth (4) on the outer ring of the bearing (2), rotate the control ring plate (308), the control ring plate (308) drives the inner gear (309) to rotate, the inner gear (309) drives the drive gear (306) to rotate, the drive gear (306) drives the second bevel gear (307) to rotate, the second bevel gear (307) drives the first bevel gear (305) to rotate, the first bevel gear (305) drives the first lead screw (304) to rotate, the first lead screw (304) drives the positioning plate (301) to move, the positioning plate (301) inserts into the corresponding positioning groove (302), and the outer ring plate (3) can be fixed on the outer ring of the bearing (2).

Images