CN116213769A

CN116213769A - Miniature bearing ring processing lathe

Info

Publication number: CN116213769A
Application number: CN202310098726.2A
Authority: CN
Inventors: 李钰欣; 郭紫楠; 蒋建强
Original assignee: Individual
Current assignee: Individual
Priority date: 2023-02-10
Filing date: 2023-02-10
Publication date: 2023-06-06

Abstract

The invention discloses a miniature bearing ring processing lathe which comprises a mounting plate and a rotating shaft box fixed on the mounting plate, wherein a rotating rotary drum is arranged in the rotating shaft box, through feeding through holes are formed in the rotating shaft box and the rotary drum, a clamping mechanism for clamping raw material pipes is arranged in the rotary drum, a conveying mechanism for conveying the raw material pipes and a limiting assembly are arranged in the rotating shaft box, and the limiting assembly is driven to limit the ends of the raw material pipes in the process of conveying the raw material pipes by the conveying mechanism. According to the invention, the bearing ring raw material is processed by adopting the pipe, so that the miniature bearing ring is processed, and the feeding mode adopts linear pushing feeding, so that the feeding is simpler, and the processing efficiency is improved; carry tubular product through feeding mechanism to realize automatic feeding, and at the tight in-process of clamp of pay-off, spacing subassembly position transition makes limit baffle be located the tip of tubular product, thereby conveniently carry out spacingly to the pay-off.

Description

Miniature bearing ring processing lathe

Technical Field

The invention relates to the technical field of bearing ring processing equipment, in particular to a miniature bearing ring processing lathe.

Background

The bearing is an important part in modern mechanical equipment, and has the main functions of supporting the rotation of the machine, reducing the friction coefficient in the mechanical movement process and ensuring the rotation precision of the machine. The bearing ring is a component part of a rolling bearing, is an annular part of the rolling bearing with one or more raceways, and is formed by adopting lathe processing.

The existing bearing ring machining lathe adopts the steps of feeding respectively, manually clamping the raw materials of the bearing ring on a chuck of the lathe or conveying and clamping the raw materials through a complex feeding mechanism, such as a numerical control lathe for precisely machining the bearing ring disclosed in Chinese patent publication No. CN115156567A, wherein the raw materials of the bearing ring are manually clamped and then subjected to turning; a bearing ring processing lathe as disclosed in CN110076352a of chinese patent publication is disclosed, which aligns bearing ring raw materials by a feeding mechanism, and then conveys the bearing ring to a lathe for clamping processing. The above-mentioned existing manner has the following disadvantages: the existing mode adopts single part raw materials to feed one by one, and the raw materials are clamped in a manual clamping mode, so that the clamping efficiency is low; the feeding mechanism is adopted, the single bearing rings are required to be arranged in a line, and raw materials are required to be conveyed to a machine tool in a required direction, so that conveying equipment is complex, and equipment cost is high.

Disclosure of Invention

The invention aims to solve the technical problems and provides a miniature bearing ring processing lathe.

In order to achieve the above purpose, the invention is realized by adopting the following technical scheme:

the miniature bearing ring machining lathe comprises a mounting plate and a rotating shaft box fixed on the mounting plate, wherein a rotating rotary drum is arranged in the rotating shaft box, through feeding through holes are formed in the rotating shaft box and the rotary drum, the feeding through holes are used for allowing raw material pipes used for bearing ring machining to pass through, a clamping mechanism for clamping the raw material pipes is arranged in the rotary drum, a conveying mechanism for conveying the raw material pipes and a limiting assembly are arranged in the rotating shaft box, and the conveying mechanism drives the limiting assembly to limit the end parts of the raw material pipes in a transmission manner in the process of conveying the raw material pipes; the mounting plate is provided with a cutter driving mechanism, the cutter driving mechanism is positioned on one side of the rotating shaft box, which is close to the clamping mechanism, and the cutter driving mechanism moves to carry out turning on the raw material pipe clamped by the clamping mechanism to form a bearing ring.

Further, be equipped with in the axlebox and hold the cavity, the rotary drum is located and holds the cavity, and the outer wall of rotary drum is rotated with the inner wall that holds the cavity and be connected, be equipped with on the outer wall of rotary drum along the outer wall circle of rotary drum and arrange first outer ring gear, install first driving motor in the axlebox, first driving motor's output shaft fixedly connected with first gear, first gear passes through gear engagement transmission with first outer ring gear, first driving motor starts and passes through gear transmission drive rotary drum rotation.

Further, the tip of rotary drum is equipped with the installation cavity, clamping mechanism is including establishing jack catch and the tight screwed ring of drive jack catch in the installation cavity, one side of jack catch extends to in the pay-off via hole and presss from both sides tightly to the work piece, the pay-off via hole one side of keeping away from of jack catch is equipped with first wedge face, the inner circle of screwed ring is equipped with the second wedge face that matches with first wedge face, second wedge face and first wedge face laminating, the screwed ring is along pay-off via hole axial displacement in-process through second wedge face and first wedge face extrusion fit drive jack catch along pay-off via radial movement, and then presss from both sides tightly or become flexible the work piece.

Further, the tip of jack catch is equipped with the extension that is integrative with the jack catch, the extension is located the installation cavity, be equipped with first compression spring in the installation cavity, first compression spring's one end butt is on the extension, and first compression spring's the other end butt is on the cavity inner wall of installation cavity, thereby first compression spring is located the extension and is close to pay-off via hole one side and provide the elasticity of keeping away from pay-off via hole to the jack catch.

Further, the outer end of the rotary drum is fixedly connected with a sealing plate, a guide rod axially arranged along the feeding through hole is fixedly connected to the sealing plate, a guide hole is formed in the threaded ring, and the guide rod is inserted into the guide hole to guide the threaded ring.

Further, the outer wall of the threaded ring is provided with threads, the outer ring of the threaded ring is sleeved with a gear ring, the inner ring of the gear ring is provided with threads and forms threaded fit with the threads on the outer wall of the threaded ring, the outer wall of the gear ring is provided with a second outer gear ring, a second driving motor is installed in the installation cavity, an output shaft of the second driving motor is fixedly connected with a second gear, and the second gear is meshed with the second outer gear ring through gears, so that the second driving motor drives the gear ring to rotate through gear transmission. Under the condition that the gear ring rotates, the threaded ring is driven to axially move along the feeding through hole through threaded fit, when a workpiece needs to be clamped, the threaded ring is driven to move by the second driving motor, the threaded ring extrudes the clamping jaw, so that the clamping jaw overcomes the elasticity of the first compression spring to move towards the center of the feeding through hole, further, the workpiece of the raw material pipe in the feeding through hole is clamped, and further, continuous turning and cutting processing can be carried out on the pipe, and further, the pipe can be continuously processed into a bearing ring; when feeding is needed, the threaded ring moves reversely, and the clamping jaw moves away from the center direction of the feeding through hole under the action of the elastic force of the first compression spring, so that the workpiece is loosened, and the raw material pipe workpiece is convenient to convey and feed.

Further, a feeding cavity is formed in the rotating shaft box, the conveying mechanism comprises a supporting frame fixedly connected to the inner wall of the feeding cavity, a first screw rod is rotatably connected to the supporting frame, a third driving motor is mounted on the supporting frame, and an output shaft of the third driving motor is fixedly connected with one end of the first screw rod to drive the first screw rod to rotate; be equipped with first screw thread and second screw thread on the first lead screw, thereby the screw thread on first screw thread and the second screw thread revolves to opposite, wear to overlap on the first lead screw have 2 movable blocks and 2 movable blocks respectively with first screw thread and second screw thread pass through screw thread cooperation, all rotate on 2 movable blocks and be connected with the feed wheel, install fourth driving motor on one of them movable block, thereby fourth driving motor's output shaft and the feed wheel center pin fixed connection on this movable block drive feed wheel rotate, thereby the feed wheel on 2 movable blocks is located the both sides of pay-off via hole and makes the feed wheel can press from both sides the work piece in the clamp pay-off via hole and rotates the feed wheel and carry the work piece. And under the drive of a third driving motor, the moving block is moved in opposite directions to enable the feeding wheel to move towards the center of the feeding through hole to clamp the workpiece, and the fourth driving motor acts to drive the feeding wheel to rotate, so that the feeding wheel clamps the workpiece to convey the workpiece towards the direction of the cutter.

Further, the feeding wheel is provided with a V-shaped groove; the guide groove is formed in the moving block, a guide rail is fixedly connected to the inner wall of the cavity of the feeding cavity, the guide rail is arranged in parallel with the first screw rod, and the guide rail penetrates through the guide groove to guide the movement of the moving block.

Further, the end part of the first screw rod is fixedly connected with a first bevel gear, the limiting assembly comprises a limiting rotating rod axially arranged along the feeding through hole and a limiting stop lever fixed at the end part of the limiting rotating rod, the limiting stop lever is positioned at the outer side of the rotating shaft box, one end of the limiting rotating rod positioned in the machine box is fixedly connected with a second bevel gear, and the second bevel gear is positioned in the feeding cavity and meshed with the first bevel gear through a gear; when the third driving motor drives the first screw rod to rotate and drives the feeding wheel to move towards the center of the feeding through hole to clamp the workpiece, the first screw rod drives the limiting rotating rod to rotate through bevel gear transmission, so that the limiting stop rod rotates to the end part of the raw material pipe to limit the raw material pipe.

Further, the cutter driving mechanism comprises a Z-axis driving device and an X-axis driving device which are arranged on the mounting plate, the Z-axis driving device comprises a first fixed plate fixed on the mounting plate and a second screw rod rotationally connected to the first fixed plate, a first sliding rail is arranged on the mounting plate, a movable plate is connected to the first sliding rail in a sliding manner, the movable plate and the second screw rod form screw rod transmission fit, a fifth driving motor is arranged on the first fixed plate, and the fifth driving motor is in transmission connection with the second screw rod so as to drive the second screw rod to rotate; the X-axis driving device comprises a second fixed plate fixedly connected to the movable plate and a third screw rod rotatably connected to the second fixed plate, a second sliding rail is mounted on the movable plate, a slide carriage is slidably connected to the second sliding rail, the slide carriage and the third screw rod form screw rod transmission fit, a sixth driving motor is mounted on the second fixed plate, the sixth driving motor is in transmission connection with the third screw rod to drive the third screw rod to rotate, a tool rest is mounted on the slide carriage, and a tool for cutting a workpiece is mounted on the tool rest.

Further, the mounting plate is provided with a supporting device, the supporting device comprises 2 supporting plates which are arranged in parallel, the supporting plates are fixed on the mounting plate, rollers are connected between the supporting plates in a rotating mode, and the rollers support raw material pipes.

The miniature bearing ring machining lathe provided by the invention has the following beneficial effects: by adopting the processing lathe, the bearing ring raw material is processed by adopting the pipe, so that the miniature bearing ring is processed, and the feeding mode adopts linear pushing feeding, so that the feeding is simpler, and the processing efficiency is improved; in the processing process, the motor drives the clamping mechanism to clamp, so that automatic control can be realized, and further clamping processing is facilitated; when feeding, clamping mechanism loosens, presss from both sides tight raw and other materials tubular product through feeding mechanism and carries tubular product through the feeding wheel rotation to realize automatic feeding, and at the tight in-process of clamping of pay-off, spacing subassembly position changes, makes limit baffle be located the tip of tubular product, thereby conveniently carries out spacingly to the pay-off.

Drawings

The following describes the embodiments of the present invention in further detail with reference to the accompanying drawings:

fig. 1 is a schematic perspective view of a miniature bearing ring processing lathe provided by the invention;

fig. 2 is a schematic view of another perspective view of a miniature bearing ring processing lathe according to the present invention;

fig. 3 is a schematic top view of a miniature bearing ring processing lathe according to the present invention;

FIG. 4 is a schematic diagram of a sectional structure of a spindle box of a miniature bearing ring processing lathe according to the present invention;

FIG. 5 is a schematic view of a portion A of FIG. 4;

FIG. 6 is a schematic side view of the feed cavity portion of FIG. 4;

fig. 7 is a schematic structural view of a feeding wheel in the invention.

The reference numerals in the figures illustrate: 1. a mounting plate; 2. a spindle box; 21. feeding through holes; 22. a first driving motor; 23. a first gear; 24. a feeding cavity; 3. a rotating drum; 31. a first outer ring gear; 32. a mounting cavity; 33. a sealing plate; 34. a guide rod; 4. a clamping mechanism; 41. a claw; 411. a first wedge surface; 412. an extension section; 42. a threaded ring; 43. a first compression spring; 44. a gear ring; 45. a second driving motor; 46. a second gear; 5. a conveying mechanism; 51. a support frame; 52. a first screw rod; 53. a third driving motor; 54. a moving block; 55. a feeding wheel; 551. a V-shaped groove; 56. a fourth driving motor; 57. a guide rail; 58. a first bevel gear; 6. a limit component; 61. a limit rotating rod; 62. a limit stop lever; 63. a second bevel gear; 7. a cutter driving mechanism; 71. a Z-axis driving device; 711. a first fixing plate; 712. a second screw rod; 713. a first slide rail; 714. a movable plate; 715. a fifth driving motor; 72. an X-axis driving device; 721. a second fixing plate; 722. a third screw rod; 723. a second slide rail; 724. a slide carriage; 725. a sixth driving motor; 73. a tool holder; 8. a support device; 81. a support plate; 82. and (3) a roller.

Description of the embodiments

It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.

The following description of the technical solutions in the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

It should be noted that, in the embodiments of the present invention, all directional indicators (such as up-down-left-right-front-rear … …) are merely used to explain the relative positional relationship between the components, motion, etc. in a specific posture (as shown in the drawings), if the specific posture is changed, the directional indicators correspondingly change, and the connection may be a direct connection or an indirect connection.

As shown in fig. 1-7, a miniature bearing ring processing lathe comprises a mounting plate 1 and a rotating shaft box 2 fixed on the mounting plate 1, wherein a rotating rotary drum 3 is arranged in the rotating shaft box 2, through feeding through holes 21 are formed in the rotating shaft box 2 and the rotary drum 3, the through holes 21 are used for allowing raw material pipes used for bearing ring processing to pass through, a clamping mechanism 4 for clamping the raw material pipes is arranged in the rotary drum 3, a conveying mechanism 5 for conveying the raw material pipes and a limiting assembly 6 are arranged in the rotating shaft box 2, and the limiting assembly 6 is driven to limit the end parts of the raw material pipes in the conveying process of the conveying mechanism 5; the mounting plate 1 is provided with a cutter driving mechanism 7, the cutter driving mechanism 7 is positioned on one side of the rotating shaft box 2, which is close to the clamping mechanism 4, and the cutter driving mechanism 7 moves to carry out turning on the raw material pipe clamped by the clamping mechanism 4 to form a bearing ring. By adopting the technical scheme, the bearing ring raw material is processed by adopting the pipe, so that the miniature bearing ring is processed, and the feeding mode adopts linear pushing feeding, so that the feeding is simpler, and the processing efficiency is improved.

According to the invention, a containing cavity is arranged in the rotating shaft box 2, the rotating drum 3 is positioned in the containing cavity, the outer wall of the rotating drum 3 is rotationally connected with the inner wall of the containing cavity, a first outer gear ring 31 which is arranged along the peripheral of the outer wall of the rotating drum 3 is arranged on the outer wall of the rotating drum 3, a first driving motor 22 is installed in the rotating shaft box 2, the output shaft of the first driving motor 22 is fixedly connected with a first gear 23, the first gear 23 and the first outer gear ring 31 are in meshed transmission through gears, and the first driving motor 22 starts to drive the rotating drum 3 to rotate through the gear transmission. Thereby enabling the workpiece clamped in the drum 3 to be rotated, thereby facilitating turning.

According to the invention, the end part of the rotary drum 3 is provided with the mounting cavity 32, the clamping mechanism 4 comprises a claw 41 arranged in the mounting cavity 32 and a threaded ring 42 for driving the claw 41 to clamp, 3 clamping jaws 41 are arranged along the circumferential array of the feeding through hole 21, one side of each claw 41 extends into the feeding through hole 21 to clamp a workpiece, a first wedge-shaped surface 411 is arranged on one side of each claw 41 far away from the feeding through hole 21, a second wedge-shaped surface matched with the first wedge-shaped surface 411 is arranged on the inner ring of the threaded ring 42, the second wedge-shaped surface is jointed with the first wedge-shaped surface 411, the threaded ring 42 is matched with the first wedge-shaped surface 411 in an extrusion mode in the axial moving process of the feeding through hole 21 to drive the claw 41 to move along the radial direction of the feeding through hole 21, and then the surrounding area of the 3 clamping jaws 41 is contracted or expanded to clamp or unclamp the workpiece.

In the invention, the end part of the claw 41 is provided with an extension section 412 which is integrated with the claw 41, the extension section 412 is positioned in the mounting cavity 32, the mounting cavity 32 is provided with a first compression spring 43, one end of the first compression spring 43 is abutted against the extension section 412, the other end of the first compression spring 43 is abutted against the inner wall of the cavity of the mounting cavity 32, and the first compression spring 43 is positioned on one side of the extension section 412 close to the feeding through hole 21 so as to provide elastic force for the claw 41 far away from the feeding through hole 21. Under the condition that the clamping jaw 41 is not extruded after the threaded ring 42 moves by the elastic force provided by the first compression spring 43, the clamping jaw 41 moves away from the feeding through hole 21 under the elastic force of the first compression spring 43, so that the clamping state of a pipe workpiece in the feeding through hole 21 is relieved, and the workpiece is convenient to feed and move.

In the invention, the outer end of the rotary drum 3 is fixedly connected with a sealing plate 33, a guide rod 34 axially arranged along the feeding through hole 21 is fixedly connected to the sealing plate 33, a guide hole is formed in the threaded ring 42, and the guide rod 34 is inserted into the guide hole to guide the threaded ring 42.

In the invention, the outer wall of the threaded ring 42 is provided with threads, the outer ring of the threaded ring 42 is sleeved with a gear ring 44, the inner ring of the gear ring 44 is provided with threads and forms threaded fit with the threads on the outer wall of the threaded ring 42, the outer ring of the outer wall of the gear ring 44 is provided with a second outer gear ring, a second driving motor 45 is installed in the installation cavity 32, an output shaft of the second driving motor 45 is fixedly connected with a second gear 46, and the second gear 46 is meshed with the second outer gear ring through gears, so that the second driving motor 45 drives the gear ring 44 to rotate through gear transmission. Under the condition that the gear ring 44 rotates, the threaded ring 42 is driven to axially move along the feeding through hole 21 through threaded fit, when a workpiece needs to be clamped, the threaded ring 42 is driven to move by the second driving motor 45, the clamping jaw 41 is extruded by the threaded ring 42, so that the clamping jaw 41 moves towards the center of the feeding through hole 21 against the elastic force of the first compression spring 43, further, a raw material pipe workpiece positioned in the feeding through hole 21 is clamped, and further, continuous turning and cutting processing can be carried out on the pipe, and further, the pipe can be continuously processed into a bearing ring; when feeding is needed, the threaded ring 42 moves reversely, and the clamping jaw 41 moves away from the center of the feeding through hole 21 under the action of the elastic force of the first compression spring 43, so that the workpiece is loosened, and the raw material pipe workpiece is convenient to convey and feed.

In the invention, a feeding cavity 24 is arranged in the rotating shaft box 2, the conveying mechanism 5 comprises a supporting frame 51 fixedly connected to the inner wall of the feeding cavity 24, a first screw rod 52 is rotatably connected to the supporting frame 51, a third driving motor 53 is arranged on the supporting frame 51, and an output shaft of the third driving motor 53 is fixedly connected with one end of the first screw rod 52 so as to drive the first screw rod 52 to rotate; the first screw rod 52 is provided with a first thread and a second thread, the threads on the first thread and the second thread are opposite in rotation direction, the first screw rod 52 is sleeved with 2 moving blocks 54 in a penetrating manner, the 2 moving blocks 54 are respectively matched with the first thread and the second thread through threads, the 2 moving blocks 54 are respectively connected with a feeding wheel 55 in a rotating manner, the moving blocks 54 are integrally in a U-shaped structure, the feeding wheels 55 are positioned in grooves of the U-shaped structure of the moving blocks 54, the moving blocks 54 are provided with guide grooves, guide rails 57 are fixedly connected to the inner wall of a cavity of the feeding cavity 24, the guide rails 57 are arranged in parallel with the first screw rod 52, and the guide rails 57 penetrate through the guide grooves to guide the movement of the moving blocks 54; a fourth driving motor 56 is installed on one moving block 54, an output shaft of the fourth driving motor 56 is fixedly connected with a central shaft of a feeding wheel 55 on the moving block 54 so as to drive the feeding wheel 55 to rotate, and the feeding wheels 55 on the 2 moving blocks 54 are positioned on two sides of the feeding through hole 21 so that the feeding wheel 55 can clamp a workpiece in the feeding through hole 21 and rotate the feeding wheel 55 to convey the workpiece. The third driving motor 53 drives the moving block 54 to move in opposite directions, so that the feeding wheel 55 moves towards the center of the feeding through hole 21 to clamp the workpiece, and the fourth driving motor 56 acts to drive the feeding wheel 55 to rotate, so that the feeding wheel 55 clamps the workpiece to convey in the direction of the cutter. In the invention, the V-shaped

grooves

551,2 are arranged on the feeding wheel 55, and the V-shaped grooves 551 of the feeding wheel 55 are arranged oppositely, so that the inclined surfaces of the V-shaped grooves 551 can surround the outer side of a workpiece, and when the feeding wheel 55 clamps the workpiece for conveying, the contact points between the V-shaped grooves 551 and the feeding wheel 55 are increased, thereby avoiding conveying skidding and improving conveying stability.

In the invention, the end part of the first screw rod 52 is fixedly connected with a first bevel gear 58, the limiting assembly 6 comprises a limiting rotating rod 61 and a limiting stop lever 62, the limiting rotating rod 61 is axially arranged along the feeding through hole 21, the limiting stop lever 62 is fixedly arranged at the end part of the limiting rotating rod 61, the limiting rotating rod 61 is rotationally connected with a spindle box, the limiting stop lever 62 is positioned at the outer side of the spindle box 2, one end of the limiting rotating rod 61 positioned in the machine box is fixedly connected with a second bevel gear 63, and the second bevel gear 63 is positioned in the feeding cavity 24 and meshed with the first bevel gear 58 through a gear; when the third driving motor 53 drives the first screw rod 52 to rotate to drive the feeding wheel 55 to move towards the center of the feeding through hole 21 to clamp a workpiece, the first screw rod 52 drives the limiting rotating rod 61 to rotate through bevel gear transmission, so that the limiting stop lever 62 rotates to the end of the raw material pipe to limit the raw material pipe. After the pipe workpiece is conveyed to the position, the fourth driving motor 56 stops working, the claw 41 clamps the workpiece, the first screw rod 52 reversely drives the moving block 54 and the feeding wheel 55 to move in the direction away from the center of the feeding through hole 21, conveying is stopped, the first screw rod 52 reversely drives the limit rotating rod 61 to reversely rotate, so that the limit stop lever 62 reversely rotates, the limit stop lever 62 is abutted against the end part of the raw material pipe to rotate below the pipe, and the influence of the limit stop lever 62 on cutting the raw material by the cutter is avoided.

In the invention, the cutter driving mechanism 7 comprises a Z-axis driving device 71 and an X-axis driving device 72 which are arranged on a mounting plate 1, wherein the Z-axis driving device 71 comprises a first fixing plate 711 fixed on the mounting plate 1 and a second screw rod 712 rotatably connected with the first fixing plate 711, a first sliding rail 713 is arranged on the mounting plate 1, a movable plate 714 is slidably connected with the first sliding rail 713, the movable plate 714 and the second screw rod 712 form screw rod transmission fit, a fifth driving motor 715 is arranged on the first fixing plate 711, and the fifth driving motor 715 is in transmission connection with the second screw rod 712 so as to drive the second screw rod 712 to rotate; the X-axis driving device 72 includes a second fixed plate 721 fixedly connected to the movable plate 714 and a third screw rod 722 rotatably connected to the second fixed plate 721, a second sliding rail 723 is installed on the movable plate 714, a slide carriage 724 is slidably connected to the second sliding rail 723, the slide carriage 724 and the third screw rod 722 form screw rod transmission fit, a sixth driving motor 725 is installed on the second fixed plate 721, the sixth driving motor 725 is in transmission connection with the third screw rod 722 to drive the third screw rod 722 to rotate, a tool rest 73 is installed on the slide carriage 724, and a tool for cutting a workpiece is installed on the tool rest 73. The Z-axis driving device 71 and the X-axis driving device 72 drive the cutter, so that the workpiece clamped by the clamping jaw 41 is turned, the cutter is switched by the cutter rest 73 in the machining process, different cutting operations on the workpiece are realized, and finally the workpiece is cut off.

In the invention, the supporting device 8 is arranged on the mounting plate 1, the supporting device 8 comprises 2 supporting plates 81 which are arranged in parallel, the supporting plates 81 are fixed on the mounting plate 1, rollers 82 are rotatably connected between the supporting plates 81, and the rollers 82 support raw material pipes. The raw material pipe adopts a slender pipe structure, one part of the pipe is positioned in the feeding through hole 21, the other part of the pipe is placed on the roller 82 of the supporting device 8, the pipe is supported through the roller 82, and the influence of falling of one end of the pipe far away from the spindle box on workpiece processing is avoided.

The technical scheme does not relate to the fact that the technical scheme can be achieved through the prior art.

According to the miniature bearing ring machining lathe, when the miniature bearing ring machining lathe works, a slender pipe is adopted as a raw material of a bearing ring to be machined, the pipe penetrates through a feeding through hole 21 and penetrates out of the feeding through hole 21, a second driving motor 45 is started to drive a threaded ring 42 to move away from a cutter, then a second wedge-shaped surface is in extrusion fit with a first wedge-shaped surface 411, so that a clamping jaw 41 moves towards the center of the feeding through hole 21, the clamping jaw 41 is abutted against the outer surface of a pipe workpiece, the workpiece is clamped, the first driving motor 22 is started to drive a rotary drum 3 to rotate, the raw material pipe workpiece is rotated, a cutter is driven to move through a cutter driving mechanism 7, one end, close to the cutter, of the raw material pipe is machined, different cutters are replaced through a cutter rest 73, and finally the turned bearing ring is cut through a cutting cutter, so that a required bearing ring machined is obtained; after cutting is finished, feeding is performed, the first driving motor 22 stops rotating, the second driving motor 45 starts rotating reversely, the threaded ring 42 is driven to move towards the direction close to the cutter, the threaded ring 42 is enabled to release extrusion of the clamping jaw 41, the clamping jaw 41 moves towards the direction far away from the center of the feeding through hole 21 under the action of the elastic force of the first compression spring 43, so that a workpiece is loosened, raw material pipe workpieces are convenient to convey and feed, the third driving motor 53 starts rotating, the first screw rod 52 is driven to rotate, the moving block 54 on the first screw rod 52 is enabled to move towards the center of the feeding through hole 21 in the opposite direction, the feeding wheel 55 on the moving block 54 is driven to move towards the center of the feeding through hole 21, the feeding wheel 55 is enabled to be abutted against the outer wall of the raw material pipe to clamp the raw material pipe, and meanwhile, the first screw rod 52 rotates to drive the limiting rotary rod 61 to rotate through bevel gear transmission, so that the limiting stop rod 62 fixedly connected with the limiting rotary rod 61 rotates to the end of the raw material pipe to limit the raw material pipe; the fourth driving motor 56 starts to drive the feeding wheel 55 to rotate, and the feeding wheel 55 rotates to drive the raw material pipe workpiece clamped by the feeding wheel 55 to move towards the direction of the cutter, so that feeding operation of the raw material pipe is completed; when feeding, the pipe is limited by the limiting stop lever 62, after the pipe is fed, the fourth driving motor 56 stops rotating, the claw 41 clamps the workpiece, the first screw rod 52 reversely drives the moving block 54 and the feeding wheel 55 to move in the direction away from the center of the feeding through hole 21, the workpiece is stopped to be conveyed, the first screw rod 52 reversely drives the limiting rotating rod 61 to reversely rotate, the limiting stop lever 62 reversely rotates, the limiting stop lever 62 is abutted to the end part of the raw material pipe to rotate below the pipe, the cutter driving mechanism 7 drives the cutter to cut the raw material pipe workpiece, and the bearing ring is cut after the cutting is completed, so that the turning of the bearing ring is completed; the steps are repeated to realize continuous cutting processing of a plurality of bearing rings, and the production efficiency is improved.

The foregoing has outlined and described the basic principles, main features and features of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made therein without departing from the spirit and scope of the invention, which is defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A miniature bearing ring processing lathe which is characterized in that: the automatic feeding device comprises a mounting plate (1) and a rotating shaft box (2) fixed on the mounting plate (1), wherein a rotating rotary drum (3) is arranged in the rotating shaft box (2), a through feeding through hole (21) is formed in the rotating shaft box (2) and the rotary drum (3), the feeding through hole (21) is used for allowing raw material pipes used for bearing ring machining to pass through, a clamping mechanism (4) for clamping the raw material pipes is arranged in the rotary drum (3), a conveying mechanism (5) for conveying the raw material pipes and a limiting assembly (6) are arranged in the rotating shaft box (2), and the limiting assembly (6) is driven to limit the ends of the raw material pipes in the conveying process of conveying the raw material pipes by the conveying mechanism (5); the mounting plate (1) is provided with a cutter driving mechanism (7), the cutter driving mechanism (7) is located on one side, close to the clamping mechanism (4), of the rotating shaft box (2), and the cutter driving mechanism (7) moves to carry out turning on raw material pipes clamped by the clamping mechanism (4) to form a bearing ring.

2. A miniature bearing ring machining lathe according to claim 1, characterized in that: be equipped with in pivot case (2) and hold the cavity, rotary drum (3) are located and hold the cavity, and the outer wall of rotary drum (3) is connected with the inner wall rotation that holds the cavity, be equipped with on the outer wall of rotary drum (3) along rotary drum (3) outer wall circumference first external gear ring (31) of arranging, install first driving motor (22) in pivot case (2), the output shaft fixedly connected with first gear (23) of first driving motor (22), first gear (23) are passed through gear engagement transmission with first external gear ring (31), first driving motor (22) start and are passed through gear transmission drive rotary drum (3) rotation.

3. A miniature bearing ring machining lathe according to claim 2, characterized in that: the end of rotary drum (3) is equipped with installation cavity (32), clamping mechanism (4) are including establishing jack catch (41) and the tight screwed ring (42) of drive jack catch (41) clamp in installation cavity (32), one side of jack catch (41) extends to in pay-off via hole (21) and presss from both sides tightly the work piece, the one side of keeping away from pay-off via hole (21) of jack catch (41) is equipped with first wedge (411), the inner circle of screwed ring (42) is equipped with the second wedge that matches with first wedge (411), second wedge and first wedge (411) laminating, screwed ring (42) are along pay-off via hole (21) axial displacement in-process through second wedge and first wedge (411) extrusion fit drive jack catch (41) along pay-off via hole (21) radial motion, and then press from both sides tightly or loosen the work piece.

4. A miniature bearing ring machining lathe according to claim 3, characterized in that: the tip of jack catch (41) is equipped with extension (412) integrative with jack catch (41), extension (412) are located installation cavity (32), be equipped with first compression spring (43) in installation cavity (32), the one end butt of first compression spring (43) is on extension (412), and the other end butt of first compression spring (43) is on the cavity inner wall of installation cavity (32), thereby first compression spring (43) are located extension (412) and are close to pay-off via hole (21) one side and provide the elasticity of keeping away from pay-off via hole (21) to jack catch (41).

5. The miniature bearing ring machining lathe of claim 4, wherein: the rotary drum (3) outer end fixedly connected with shrouding (33), fixedly connected with is followed guide arm (34) of pay-off via hole (21) axial arrangement on shrouding (33), set up the guiding hole on screw thread ring (42), guide arm (34) alternate in the guiding hole and carry out the direction to screw thread ring (42).

6. The miniature bearing ring machining lathe of claim 5, wherein: the outer wall of the threaded ring (42) is provided with threads, the outer ring of the threaded ring (42) is sleeved with a gear ring (44), the inner ring of the gear ring (44) is provided with threads and forms threaded fit with the threads on the outer wall of the threaded ring (42), the outer wall upper periphery of the gear ring (44) is provided with a second outer gear ring, a second driving motor (45) is installed in the installation cavity (32), an output shaft of the second driving motor (45) is fixedly connected with a second gear (46), the second gear (46) is meshed with the second outer gear ring through gears, and the second driving motor (45) drives the gear ring (44) to rotate through gear transmission. Under the condition that the gear ring (44) rotates, the threaded ring (42) is driven to axially move along the feeding through hole (21) through threaded fit, when a workpiece needs to be clamped, the threaded ring (42) is driven to move by the second driving motor (45), the threaded ring (42) extrudes the clamping jaw (41), the clamping jaw (41) overcomes the elastic force of the first compression spring (43) to move towards the center of the feeding through hole (21), and then the raw material pipe workpiece positioned in the feeding through hole (21) is clamped, so that continuous turning and cutting processing can be carried out on the pipe, and further the pipe can be continuously processed into a bearing ring; when feeding is needed, the threaded ring (42) moves reversely, and the clamping jaw (41) moves away from the center direction of the feeding through hole (21) under the action of the elastic force of the first compression spring (43), so that the workpiece is loosened, and the raw material pipe workpiece is convenient to convey and feed.

7. A miniature bearing ring machining lathe according to claim 1, characterized in that: the feeding device is characterized in that a feeding cavity (24) is formed in the rotating shaft box (2), the conveying mechanism (5) comprises a supporting frame (51) fixedly connected to the inner wall of the feeding cavity (24), a first screw rod (52) is rotatably connected to the supporting frame (51), a third driving motor (53) is mounted on the supporting frame (51), and an output shaft of the third driving motor (53) is fixedly connected with one end of the first screw rod (52) so as to drive the first screw rod (52) to rotate; be equipped with first screw thread and second screw thread on first lead screw (52), thereby the screw thread on first screw thread and the second screw thread revolves to opposite, wear to overlap on first lead screw (52) to have 2 movable blocks (54) and 2 movable blocks (54) respectively with first screw thread and second screw thread pass through screw thread cooperation, all rotate on 2 movable blocks (54) and be connected with feed wheel (55), wherein install fourth driving motor (56) on one movable block (54), thereby the output shaft of fourth driving motor (56) and feed wheel (55) center pin fixed connection on this movable block (54) thereby drive feed wheel (55) rotate, thereby feed wheel (55) on 2 movable blocks (54) are located the both sides of pay-off via hole (21) so that feed wheel (55) can press from both sides the work piece in the pay-off via hole (21) and rotate feed wheel (55) and carry the work piece.

8. The miniature bearing ring machining lathe of claim 7, wherein: the feeding wheel (55) is provided with a V-shaped groove (551); the guide groove is formed in the moving block (54), a guide rail (57) is fixedly connected to the inner wall of the cavity of the feeding cavity (24), the guide rail (57) and the first screw rod (52) are arranged in parallel, and the guide rail (57) penetrates through the guide groove to guide the moving block (54).

9. The miniature bearing ring machining lathe of claim 7, wherein: the end part of the first screw rod (52) is fixedly connected with a first bevel gear (58), the limiting assembly (6) comprises a limiting rotating rod (61) axially arranged along the feeding through hole (21) and a limiting stop lever (62) fixed at the end part of the limiting rotating rod (61), the limiting stop lever (62) is positioned at the outer side of the rotating shaft box (2), one end of the limiting rotating rod (61) positioned in the machine box is fixedly connected with a second bevel gear (63), and the second bevel gear (63) is positioned in the feeding cavity (24) and meshed with the first bevel gear (58) through a gear; when the third driving motor (53) drives the first screw rod (52) to rotate and drives the feeding wheel (55) to move towards the center of the feeding through hole (21) to clamp a workpiece, the first screw rod (52) drives the limiting rotating rod (61) to rotate through bevel gear transmission, so that the limiting stop lever (62) rotates to the end part of the raw material pipe to limit the raw material pipe.

10. A miniature bearing ring machining lathe according to claim 1, characterized in that: the cutter driving mechanism (7) comprises a Z-axis driving device (71) and an X-axis driving device (72) which are arranged on the mounting plate (1), the Z-axis driving device (71) comprises a first fixed plate (711) fixed on the mounting plate (1) and a second screw rod (712) rotatably connected to the first fixed plate (711), a first sliding rail (713) is arranged on the mounting plate (1), a movable plate (714) is connected to the first sliding rail (713) in a sliding manner, the movable plate (714) and the second screw rod (712) form screw rod transmission fit, a fifth driving motor (715) is arranged on the first fixed plate (711), and the fifth driving motor (715) is in transmission connection with the second screw rod (712) so as to drive the second screw rod (712) to rotate; the X-axis driving device (72) comprises a second fixed plate (721) fixedly connected to the movable plate (714) and a third screw rod (722) rotatably connected to the second fixed plate (721), a second sliding rail (723) is arranged on the movable plate (714), a slide carriage (724) is connected to the second sliding rail (723) in a sliding mode, the slide carriage (724) and the third screw rod (722) form screw rod transmission fit, a sixth driving motor (725) is arranged on the second fixed plate (721), the sixth driving motor (725) is in transmission connection with the third screw rod (722) to drive the third screw rod (722) to rotate, a tool rest (73) is arranged on the slide carriage (724), and a tool for cutting a workpiece is arranged on the tool rest (73); the device is characterized in that a supporting device (8) is arranged on the mounting plate (1), the supporting device (8) comprises 2 supporting plates (81) which are arranged in parallel, the supporting plates (81) are fixed on the mounting plate (1), rollers (82) are connected between the supporting plates (81) in a rotating mode, and the rollers (82) support raw material pipes.