Inner ring flattening equipment for bearing ring forging
By designing an inner ring flattening device that automatically adjusts the position of the push plate in the bearing ring forging equipment, the problems of large impact force and low manual correction efficiency in the prior art are solved, and a more efficient stamping process and better safety are achieved. .
Patent Information
- Application Number
- CN202411686347.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-25
- Publication Date
- 2024-12-24
- Estimated Expiration
- 2044-11-25
AI Technical Summary
During the bearing ring forging process, the impact force of existing stamping equipment is relatively large, resulting in the offset of the ferrule position, which requires manual handheld fixtures to be corrected, which is inefficient and affects personal safety.
An inner ring flattening device including a workbench, a fixing frame, a load table and a positioning mechanism was designed. Through electric telescopic rods, horizontal plates and stamping blocks, combined with transverse and vertical translation components, the push plate position is automatically adjusted and improved. Stamping efficiency.
It effectively improves stamping efficiency, reduces the need for manual correction, and improves the safety of staff.
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Figure CN119175318A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of forging equipment, in particular to an inner ring flattening device for forging a bearing ring. Background Art
[0002] Bearings are one of the more important parts in current machinery. There are many processes in the processing of bearings, among which turning the bearings is the key processing process. The bearing ring is an important component of the bearing. Different bearings have different shapes of the outer rings. When processing the bearings, they need to be forged.
[0003] During the forging process of the bearing ring, the bearing needs to be flattened, so a stamping device is required to process the bearing ring. Currently, during the stamping process of the bearing ring, the bearing ring is placed on the surface of the stamping table, and the stamping device performs continuous stamping on it intermittently.
[0004] The impact force of the stamping equipment is relatively large. After a single stamping, the position of the bearing ring on the surface of the stamping table will be offset. Therefore, during each stamping interval, a manual handheld clamp is required to correct the position of the bearing ring. This not only reduces the stamping efficiency, but also affects the personal safety of the staff. Summary of the invention
[0005] The object of the present invention is to provide an inner ring flattening device for forging a bearing ring to solve the problems raised in the above-mentioned background technology.
[0006] To achieve the above object, the present invention provides the following technical solutions: An inner ring flattening device for forging a bearing ring comprises a workbench, a fixed frame is fixedly installed on the surface of the workbench, the fixed frame is an inverted U-shaped structure, a bearing platform is fixedly installed on the surface of the workbench, the bearing platform is a disc-shaped structure, a flattening component that cooperates with the bearing platform is arranged on the surface of the fixed frame, the flattening component comprises an electric telescopic rod fixedly installed on the top wall of the fixed frame, a cross plate is fixedly installed on the telescopic end of the electric telescopic rod, a stamping block is fixedly installed on the bottom wall of the cross plate, a positioning mechanism is arranged on the surface of the bearing platform, the positioning mechanism comprises a push plate, a lateral translation component and a vertical translation component, the push plate is provided with multiple groups and The horizontal translation assembly is distributed in a ring shape on the surface of the bearing platform, and includes a sliding part and an adjusting part. The sliding part is located inside the bearing platform and connected to the push plate, and the adjusting part is connected to the sliding part. When the horizontal plate moves upward in the vertical direction, the adjusting part controls the push plate to move synchronously along the radial direction of the bearing platform by cooperating with the sliding part. The vertical translation assembly is connected to the push plate. When the push plate moves along the radial direction of the bearing platform, the vertical translation assembly controls the push plate to move synchronously in the vertical direction. When the push plate moves from the periphery of the bearing platform toward the center of the bearing platform, the vertical translation assembly controls the push plate to move from the inside of the bearing platform to the top of the bearing platform.
[0007] As a further solution of the present invention: the sliding part includes multiple groups of slides distributed in an annular shape opened inside the bearing platform, a connecting groove connected to the slide is opened downwardly on the surface of the bearing platform, a sliding block is slidably installed in the slide, a push plate is arranged on the surface of the sliding block, an extrusion spring is fixedly installed at one end of the slide close to the center of the bearing platform, the telescopic end of the extrusion spring is connected to the sliding block, and a wire groove extending to the outside of the bearing platform is opened inward at one end of the slide close to the bearing platform, a vertical rod is fixedly installed between the top wall of the fixed frame and the workbench, a control rope is fixedly installed on the side wall of the sliding block, the end of the control rope away from the sliding block passes through the wire groove and extends to the outside of the bearing platform and is fixedly installed with the control block, the control block is made of magnetic material, the control block is slidably connected to the vertical rod in the vertical direction, and a magnetic block cooperating with the control block is fixedly installed on the bottom wall of the horizontal plate.
[0008] As a further solution of the present invention: the adjusting part includes a telescopic cavity opened inside the supporting platform and connected with the wire groove, the control rope passes through the telescopic cavity, the control rope is divided into two sections in the telescopic cavity, one end of the control rope located in the telescopic cavity is fixedly installed with a first telescopic block, the other end of the control rope located in the telescopic cavity is fixedly installed with a second telescopic block, and a buffer spring is connected between the first telescopic block and the second telescopic block.
[0009] As a further solution of the present invention: the vertical translation assembly includes a vertical groove opened downward on the surface of the sliding block, the push plate is slidably installed in the vertical groove along the vertical direction, the two side walls of the sliding block opposite to each other are respectively provided with lateral grooves connected to the vertical groove, the side walls of the slide are provided with guide grooves, and the side walls of the push plate are fixedly installed with guide columns, which pass through the lateral grooves and are inserted into the guide grooves. The guide grooves are zigzag structures, and the guide grooves include a bottom groove, a connecting groove and a top groove, and the two ends of the connecting groove are respectively connected to the bottom groove and the top groove.
[0010] As a further solution of the present invention: a roller that cooperates with the control rope is rotatably installed in the wire groove.
[0011] As a further solution of the present invention: a shock-absorbing spring surrounding the vertical rod and cooperating with the control block is fixedly installed on the surface of the workbench.
[0012] As a further solution of the present invention: the horizontal plate is slidably connected to the vertical rod along the vertical direction.
[0013] Compared with the prior art, the beneficial effect of the present invention is that when the horizontal plate and the punching block move in the vertical direction for punching, the positions of multiple push plates can be conveniently adjusted by setting a horizontal translation assembly composed of a sliding part and an adjusting part to cooperate with a vertical translation assembly. Multiple push plates can adjust the position of the bearing ring on the surface of the bearing platform, which can effectively improve the punching efficiency. This solves the problem that the position of the bearing ring needs to be corrected by a manual hand-held clamp, which not only has low punching efficiency, but also affects the personal safety of the staff. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a schematic diagram of the three-dimensional structure of an inner ring flattening device for forging a bearing ring provided in an embodiment of the present invention.
[0015] Figure 2 It is a schematic diagram of the main structure of an inner ring flattening device for forging a bearing ring provided in an embodiment of the present invention.
[0016] Figure 3 The present invention is a schematic diagram of a sliding block and its connection structure in an inner ring flattening device for forging a bearing ring provided in an embodiment of the present invention.
[0017] Figure 4 for Figure 2 Schematic diagram of the enlarged structure of A.
[0018] Figure 5 for Figure 2 Schematic diagram of the enlarged structure of B.
[0019] Among them: 1- workbench, 2- fixed frame, 3- bearing platform, 4- flattening assembly, 41- electric telescopic rod, 42- horizontal plate, 43- punching block, 5- positioning mechanism, 51- push plate, 52- horizontal translation assembly, 521- sliding part, 5211- slideway, 5212- connecting groove, 5213- sliding block, 5214- extrusion spring, 5215- wire trough, 5216- vertical rod, 5217- control block, 5 218-magnetic block, 5219-control rope, 522-adjusting part, 5221-telescopic chamber, 5222-first telescopic block, 5223-second telescopic block, 5224-buffer spring, 53-vertical translation assembly, 531-vertical groove, 532-lateral groove, 533-guide column, 534-guide groove, 5341-bottom groove, 5342-connecting groove, 5343-top groove, 6-roller, 7-shock-absorbing spring. DETAILED DESCRIPTION
[0020] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.
[0021] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.
[0022] like Figure 1 , Figure 2 , Figure 4 As shown, it is a structural diagram of an inner ring flattening device for forging a bearing ring provided by an embodiment of the present invention, comprising a workbench 1, a fixed frame 2 is fixedly installed on the surface of the workbench 1, and the fixed frame 2 is an inverted U-shaped structure. A bearing platform 3 is fixedly installed on the surface of the workbench 1, and the bearing platform 3 is a disc-shaped structure. A flattening component 4 that cooperates with the bearing platform 3 is arranged on the surface of the fixed frame 2, and the flattening component 4 includes an electric telescopic rod 41 fixedly installed on the inner top wall of the fixed frame 2, and a cross plate 42 is fixedly installed on the telescopic end of the electric telescopic rod 41, and a stamping block 43 is fixedly installed on the bottom wall of the cross plate 42. A positioning mechanism 5 is arranged on the surface of the bearing platform 3, and the positioning mechanism 5 includes a push plate 51, a lateral translation component 52 and a vertical translation component 53. The push plate 51 is provided with multiple groups and The lateral translation assembly 52 is distributed in a ring shape on the surface of the supporting platform 3, and includes a sliding portion 521 and an adjusting portion 522. The sliding portion 521 is located inside the supporting platform 3 and is connected to the push plate 51. The adjusting portion 522 is connected to the sliding portion 521. When the lateral plate 42 moves upward in the vertical direction, the adjusting portion 522 controls the push plate 51 to move synchronously along the radial direction of the supporting platform 3 by cooperating with the sliding portion 521. The vertical translation assembly 53 is connected to the push plate 51. When the push plate 51 moves along the radial direction of the supporting platform 3, the vertical translation assembly 53 controls the push plate 51 to move synchronously along the vertical direction. When the push plate 51 moves from the periphery of the supporting platform 3 toward the center of the supporting platform 3, the vertical translation assembly 53 controls the push plate 51 to move from the inside of the supporting platform 3 to above the supporting platform 3.
[0023] Initially, multiple groups of push plates 51 are located around the bearing platform 3 and inside the bearing platform 3. The bearing ring that needs to be flattened is placed on the surface of the bearing platform 3. The electric telescopic rod 41 pushes the cross plate 42 and the punching block 43 to move downward. The punching block 43 can punch the bearing ring on the surface of the bearing platform 3. After a single punching, the electric telescopic rod 41 controls the cross plate 42 and the punching block 43 to move vertically upward. When the cross plate 42 moves upward, the sliding part 521 can control multiple groups of push plates 51 to move toward the center of the bearing platform 3 along the radial direction of the bearing platform 3. While the push plates 51 move along the radial direction of the bearing platform 3, the vertical translation component 53 controls the push plates 51 to move to the outside of the bearing platform 3. When moving, multiple groups of push plates 51 can adjust the position of the bearing ring on the surface of the bearing platform 3, and can stably place the bearing ring at the center of the bearing platform 3, so as to facilitate the next punching. After the bearing ring moves to the center position and the cross plate 42 moves upward to the limit position, the adjusting portion 522 cooperates with the sliding portion 521 to control the push plate 51 to move in the opposite direction toward the surrounding directions of the supporting platform 3. The push plate 51 moves to the inside of the supporting platform 3. When the cross plate 42 and the punching block 43 move downward, the push plate 51 will not interfere with them, making it easier to continue punching next time.
[0024] like Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown, as a preferred embodiment of the present invention, the sliding part 521 includes a plurality of groups of slideways 5211 arranged in an annular shape inside the bearing platform 3, a connecting groove 5212 communicating with the slideway 5211 is downwardly arranged on the surface of the bearing platform 3, a sliding block 5213 is slidably installed in the slideway 5211, and the push plate 51 is arranged on the surface of the sliding block 5213. An extrusion spring 5214 is fixedly installed at one end of the slideway 5211 close to the center of the bearing platform 3, and the telescopic end of the extrusion spring 5214 is connected to the sliding block 5213. The end of the slideway 5211 close to the bearing platform 3 is inwardly extended. A wire groove 5215 extending to the outside of the supporting platform 3 is opened, a vertical rod 5216 is fixedly installed between the top wall of the fixed frame 2 and the workbench 1, a control rope 5219 is fixedly installed on the side wall of the sliding block 5213, and the end of the control rope 5219 away from the sliding block 5213 passes through the wire groove 5215 and extends to the outside of the supporting platform 3 and is fixedly installed with a control block 5217, the control block 5217 is made of magnetic material, the control block 5217 is slidably connected to the vertical rod 5216 in the vertical direction, and a magnetic block 5218 cooperating with the control block 5217 is fixedly installed on the bottom wall of the cross plate 42.
[0025] Initially, the extrusion spring 5214 applies a thrust to the sliding block 5213. At this time, the sliding block 5213 is at the end of the slideway 5211 away from the center of the bearing platform 3. When the cross plate 42 and the punching block 43 move downward to punch the bearing ring, the magnetic block 5218 on the bottom wall of the cross plate 42 is connected to the control block 5217 as a whole through the magnetic attraction. After a single punching is completed, the electric telescopic rod 41 controls the cross plate 42 and the punching block 43 to move upward. The cross plate 42 and the magnetic block 5218 cooperate with each other to drive the control block 5217 to move upward synchronously in the vertical direction. The control block 521 7 cooperates with the control rope 5219 to pull the sliding block 5213 to move synchronously in the slideway 5211 toward the center of the supporting platform 3, and the sliding block 5213 drives the push plate 51 to move synchronously. After the control block 5217 moves upward to the limit position, the horizontal plate 42 continues to move upward, and the adjustment part 522 releases the suction force of the magnetic block 5218 on the control block 5217. The control block 5217 moves downward to the bottom end of the vertical rod 5216, and the extrusion spring 5214 applies a thrust to the sliding block 5213. At this time, the sliding block 5213 moves to the end of the slideway 5211 away from the center of the supporting platform 3.
[0026] like Figure 2 , Figure 4 , Figure 5 As shown, as a preferred embodiment of the present invention, the adjusting part 522 includes a telescopic cavity 5221 opened inside the supporting platform 3 and connected with the wire groove 5215, the control rope 5219 passes through the telescopic cavity 5221, and the control rope 5219 is divided into two sections in the telescopic cavity 5221, and one end of the control rope 5219 located in the telescopic cavity 5221 is fixedly installed with a first telescopic block 5222, and the other end of the control rope 5219 located in the telescopic cavity 5221 is fixedly installed with a second telescopic block 5223, and a buffer spring 5224 is connected between the first telescopic block 5222 and the second telescopic block 5223.
[0027] When the control block 5217 moves upward, it cooperates with the control rope 5219 to pull the sliding block 5213 to move synchronously on the slide 5211. After the multiple push plates 51 push the bearing ring to the center position of the bearing platform 3, the cross plate 42 continues to move upward, and the cross plate 42 cooperates with the magnetic block 5218 to pull the control block 5217 to move synchronously. The control block 5217 pulls the control rope 5219 to move synchronously, and the control rope 5219 pulls the second telescopic block 5223 to move synchronously in the telescopic cavity 5221. The second telescopic block 5223 cooperates with the first telescopic block 5222 to conveniently adjust the position of the control rope 5219. After the first telescopic block 5222 moves to the end of the telescopic cavity 5221, the control block 5217 moves upward to the limit position, and the cross plate 42 drives the magnetic block 5218 to continue to move upward, and the magnetic block 5218 separates from the control block 5217.
[0028] like Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown, as a preferred embodiment of the present invention, the vertical translation component 53 includes a vertical groove 531 downwardly opened on the surface of the sliding block 5213, and the push plate 51 is slidably installed in the vertical groove 531 along the vertical direction. The two side walls of the sliding block 5213 opposite to each other are respectively provided with lateral grooves 532 connected with the vertical groove 531, and the side walls of the slide 5211 are provided with guide grooves 534. The side walls of the push plate 51 are fixedly installed with guide columns 533, and the guide columns 533 pass through the lateral grooves 532 and are inserted into the guide grooves 534. The guide grooves 534 are of a broken line structure, and the guide grooves 534 include a bottom groove 5341, a connecting groove 5342 and a top groove 5343. The two ends of the connecting groove 5342 are respectively connected with the bottom groove 5341 and the top groove 5343.
[0029] Initially, the sliding block 5213 is at one end of the slideway 5211 away from the center of the supporting platform 3. At this time, the guide column 533 is inserted into the bottom groove 5341. When the sliding block 5213 moves toward the center of the supporting platform 3 in the slideway 5211, the sliding block 5213 drives the guide column 533 to move synchronously. The guide column 533 passes through the bottom groove 5341 and the connecting groove 5342 and moves to the top groove 5343. The guide column 533 drives the push plate 51 to move upward synchronously in the vertical groove 531. At this time, the push plate 51 moves to the outside of the supporting platform 3, and the position of the bearing ring can be conveniently adjusted.
[0030] like Figure 2 , Figure 4 , Figure 5 As shown, as a preferred embodiment of the present invention, a roller 6 cooperating with the control rope 5219 is rotatably installed in the wire groove 5215. The roller 6 can effectively reduce the wear between the control rope 5219 and the wire groove 5215.
[0031] like Figure 1 , Figure 2 As shown, as a preferred embodiment of the present invention, a shock absorbing spring 7 surrounding the vertical rod 5216 and cooperating with the control block 5217 is fixedly installed on the surface of the workbench 1. When the control block 5217 moves downward, the shock absorbing spring 7 can effectively reduce the impact force on the control block 5217.
[0032] like Figure 1 , Figure 2 As shown, as a preferred embodiment of the present invention, the horizontal plate 42 is slidably connected to the vertical rod 5216 along the vertical direction.
[0033] The working principle of the present invention is as follows: initially, the extrusion spring 5214 applies a thrust to the sliding block 5213. At this time, the sliding block 5213 is at one end of the slideway 5211 away from the center of the bearing platform 3. At this time, the guide column 533 is inserted into the bottom groove 5341, and the bearing ring to be flattened is placed on the surface of the bearing platform 3. The electric telescopic rod 41 pushes the cross plate 42 and the stamping block 43 to move downward. The stamping block 43 can perform stamping on the bearing ring on the surface of the bearing platform 3. The magnetic block 5218 on the bottom wall of the cross plate 42 is connected to the control block 5217 as a whole through magnetic attraction. After a single stamping is completed, the electric telescopic rod 41 controls the cross plate 42 and the stamping block 43 to move upward. The cross plate 42 and the magnetic block 5218 cooperate with each other to drive the control block 5217 to move upward synchronously in the vertical direction. The control block 5217 cooperates with the control rope 5219 to pull the sliding block 5213 to move synchronously toward the center of the bearing platform 3 in the slideway 5211, and the sliding block 5213 drives the push plate 51 to move synchronously. When the sliding block 5213 moves toward the center of the bearing platform 3 in the slideway 5211, the sliding block 5213 drives the guide column 533 to move synchronously. The guide column 533 passes through the bottom groove 5341 and the connecting groove 5342 and moves to the top groove 5343. The guide column 533 drives the push plate 51 to move upward synchronously in the vertical groove 531. At this time, the push plate 51 moves to the outside of the bearing platform 3. Multiple groups of push plates 51 can adjust the position of the bearing ring on the surface of the bearing platform 3 when moving, and can stably place the bearing ring at the center position of the bearing platform 3, so as to facilitate the next stamping.
[0034] After the multiple push plates 51 push the bearing ring to the center of the bearing platform 3, the horizontal plate 42 continues to move upward, and the horizontal plate 42 cooperates with the magnetic block 5218 to pull the control block 5217 to move synchronously, and the control block 5217 pulls the control rope 5219 to move synchronously, and the control rope 5219 pulls the second telescopic block 5223 to move synchronously in the telescopic cavity 5221. The second telescopic block 5223 cooperates with the first telescopic block 5222 to conveniently adjust the position of the control rope 5219. After the first telescopic block 5222 moves to the end of the telescopic cavity 5221, the control block 5217 moves upward to the limit position, and the horizontal plate 42 drives the magnetic block 5218 to continue to move upward, and the magnetic block 5218 separates from the control block 5217. The extrusion spring 5214 applies a thrust to the sliding block 5213, and the sliding block 5213 moves to the end of the slideway 5211 away from the center of the bearing platform 3.
[0035] The preferred embodiments of the present invention are described in detail above, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in this field without departing from the purpose of the present invention.
Claims
1. An inner ring flattening device for forging a bearing ring, comprising a workbench, a fixing frame is fixedly installed on the surface of the workbench, the fixing frame is an inverted U-shaped structure, a bearing platform is fixedly installed on the surface of the workbench, and the bearing platform is a disc-shaped structure, characterized in that: The surface of the fixed frame is provided with a flattening assembly that cooperates with the bearing platform. The flattening assembly includes an electric telescopic rod fixedly installed on the top wall of the fixed frame, a cross plate is fixedly installed on the telescopic end of the electric telescopic rod, and a stamping block is fixedly installed on the bottom wall of the cross plate. A positioning mechanism is provided on the surface of the bearing platform, and the positioning mechanism includes a push plate, a lateral translation assembly and a vertical translation assembly. The push plates are provided in multiple groups and are distributed in an annular manner on the surface of the bearing platform. The lateral translation assembly includes a sliding part and an adjusting part. The sliding part is located inside the bearing platform and is connected to the push plate. The adjusting part The adjusting part is connected with the sliding part. When the cross plate moves upward in the vertical direction, the adjusting part controls the push plate to move synchronously along the radial direction of the bearing platform by cooperating with the sliding part. The sliding part includes a plurality of slideways arranged in an annular shape inside the bearing platform. A connecting groove connected to the slideway is arranged downward on the surface of the bearing platform. A sliding block is slidably installed in the slideway. The push plate is arranged on the surface of the sliding block. An extrusion spring is fixedly installed at one end of the slideway close to the center of the bearing platform. The telescopic end of the extrusion spring is connected to the sliding block. A spring extending to the bearing platform is arranged inward at one end of the slideway close to the bearing platform. The outer wire groove, the vertical rod is fixedly installed between the top wall of the fixed frame and the workbench, the side wall of the sliding block is fixedly installed with a control rope, the end of the control rope away from the sliding block passes through the wire groove and extends to the outside of the bearing platform and is fixedly installed with a control block, the control block is made of magnetic material, the control block and the vertical rod are slidably connected in the vertical direction, and a magnetic block that cooperates with the control block is fixedly installed on the bottom wall of the cross plate, the vertical translation assembly is connected with the push plate, when the push plate moves along the radial direction of the bearing platform, the vertical translation assembly controls the push plate to move synchronously in the vertical direction, and the push plate moves from the surrounding of the bearing platform to the bearing platform When the platform moves in the center direction, the vertical translation assembly controls the push plate to move from the inside of the platform to the top of the platform. The vertical translation assembly includes a vertical groove opened downward on the surface of the sliding block. The push plate is slidably installed in the vertical groove along the vertical direction. The two side walls of the sliding block opposite to each other are respectively provided with lateral grooves connected to the vertical grooves. The side walls of the slide are provided with guide grooves. Guide columns are fixedly installed on the side walls of the push plate. The guide columns pass through the lateral grooves and are inserted into the guide grooves. The guide grooves are of a zigzag structure. The guide grooves include a bottom groove, a connecting groove and a top groove. The two ends of the connecting groove are respectively connected to the bottom groove and the top groove.
2. The inner ring flattening device for forging a bearing ring according to claim 1, characterized in that: The adjustment part includes a telescopic cavity opened inside the supporting platform and connected with the wire groove. The control rope passes through the telescopic cavity. The control rope is divided into two sections in the telescopic cavity. A first telescopic block is fixedly installed at one end of the control rope located in the telescopic cavity, and a second telescopic block is fixedly installed at the other end of the control rope located in the telescopic cavity. A buffer spring is connected between the first telescopic block and the second telescopic block.
3. The inner ring flattening device for forging a bearing ring according to claim 1, characterized in that: A roller that cooperates with the control rope is rotatably installed in the wire groove.
4. The inner ring flattening device for forging a bearing ring according to claim 1, characterized in that: A shock absorbing spring which surrounds the vertical rod and cooperates with the control block is fixedly installed on the surface of the workbench.
5. The inner ring flattening device for forging a bearing ring according to claim 1, characterized in that: The horizontal plate is slidably connected to the vertical rod along the vertical direction.
Citation Information
Patent Citations
Novel hydraulic casting device
CN111468576A
Stamping device of bearing production equipment
CN216027366U
Stamping device for deep groove ball bearing retainer production
CN216540377U
Inner ring flattening equipment for bearing ring forging
CN220073147U
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