LU509265B1

LU509265B1 - Multi-station clamp in high-precision part machining and one-step forming method

Info

Publication number: LU509265B1
Application number: LU509265A
Authority: LU
Inventors: Xiaohu Huang
Original assignee: Shenzhen Ztl Tech Co Ltd
Priority date: 2024-03-04
Filing date: 2024-12-10
Publication date: 2025-06-10
Also published as: CN118143710A

Abstract

The present application discloses a multi-station clamp in high-precision part machining and a one-step forming method, relating to the field of precision part machining. The multi-station clamp includes: a rotary disc, wherein a first driving part is arranged at the bottom of the rotary disc and used for driving the rotary disc to rotate; a plurality of clamp bodies which are evenly arranged on the rotary disc in a radial shape with a circle center of the rotary disc as a center and slidably connected to the rotary disc in a diameter direction of the rotary disc, wherein each clamp body is provided with a mounting groove which is used for accommodating a workpiece to be clamped; and a plurality of linkage assemblies which are fixedly connected to the clamp bodies and used for driving the plurality of clamp bodies to move close to or away from the circle center of the rotary disc at the same time. By adopting the above technical solutions, the workpieces on the plurality of clamp bodies can further be machined through one tool; and meanwhile, since frequent tool change and debugging are not needed for the rotary disc, rapid switching for machining is facilitated, and the operation efficiency is improved.

Description

MULTI-STATION CLAMP IN HIGH-PRECISION PART MACHINING AND

ONE-STEP FORMING METHOD

TECHNICAL FIELD

[0001] The present application relates to the technical field of precision part machining, in particular to a multi-station clamp in high-precision part machining and a one-step forming method.

BACKGROUND ART

[0002] High-precision CNC machining is a machining method that uses CNC programs to perform high-precision machining on workpieces on CNC machine tools. It is an efficient, high-precision, and high-quality machining method that can achieve high-precision requirements for shapes, sizes and surface accuracy of workpieces. High-precision CNC machining includes a plurality of machining procedures, each of which requires fine machining control and precise tool selection. This machining method requires high-precision CNC machine tools and high-precision tools, as well as strict machining process control. Due to its high precision, it is widely used in high-end manufacturing. High-precision CNC machining has been widely used in modern manufacturing and can be used in high-precision industries such as aviation, automobiles, mold manufacturing, medical equipment, and electronic products. It has high-precision, high-quality and high-efficiency characteristics and can achieve high-precision requirements for shapes, sizes and surface accuracy of workpieces. With the continuous development of science and technology, high-precision CNC machining will become an indispensable part of the manufacturing industry.

[0003] The related technologies disclose a multi-station clamp, including a base, a positioning assembly, a clamping assembly, a moving assembly and a pressing plate, wherein the base has a 1 strip structure and an I-shaped cross-section; the positioning assembly is fixedly installed on one, 509265 side of an upper end surface of the base; the clamping assembly is installed on the base through the pressing plate, and can move in a length direction of the base; the clamping assembly is arranged oppositely to the positioning assembly; and the moving assembly 1s fixedly installed on the other side of the upper end surface of the base and connected to the clamping assembly, and drives the clamping assembly to move transversely to move close to or away from the positioning assembly. The related technologies solve the problem of low machining efficiency in the prior art that a plurality of parts cannot be clamped by using a general clamp at the same time.

However, when a plurality of workpieces are machined, a plurality of tools are required for machining or the tools need to be accurately moved to another station for machining, resulting in frequent tool debugging, cumbersome operations and low efficiency.

SUMMARY

[0004] The present invention aims to provide a multi-station clamp in high-precision part machining and a one-step forming method, which can solve the technical problems that a plurality of tools are required for machining or the tools need to be accurately moved to another station for machining during the machining process of a plurality of workpieces, resulting in frequent tool debugging, cumbersome operations and low efficiency.

[0005] First aspect

[0006] The present application provides a multi-station clamp in high-precision part machining, including:

[0007] a rotary disc, wherein a first driving part is arranged at the bottom of the rotary disc and used for driving the rotary disc to rotate;

[0008] a plurality of clamp bodies which are evenly arranged on the rotary disc in a radial shape with a circle center of the rotary disc as a center and slidably connected to the rotary disc in a diameter direction of the rotary disc, wherein each clamp body is provided with a mounting 2 groove which is used for accommodating a workpiece to be clamped; and LU509265

[0009] a plurality of linkage assemblies which are fixedly connected to the clamp bodies and used for driving the plurality of clamp bodies to move close to or away from the circle center of the rotary disc at the same time.

[0010] By adopting the above technical solution, the plurality of clamp bodies can clamp and machine a plurality of workpieces when the plurality of workpieces are machined. When the plurality of workpieces are machined by using one tool, the rotary disc rotates to drive the workpieces on the remaining clamp bodies to move close to this tool, such that no frequent tool change and debugging are required when the workpieces on the plurality of clamp bodies are machined by this tool. The linkage assemblies drive the plurality of clamp bodies to move close to or away from the circle center at the same time, such that positions of the workpieces on the remaining clamp bodies are adjusted conveniently, thereby realizing rapid switching for machining and promoting the operation efficiency.

[0011] Preferably, each clamp body includes:

[0012] a first clamping block, wherein the rotary disc is provided with a limiting sliding-groove in the diameter direction, and the first clamping block is slidably connected into the limiting sliding-groove; and

[0013] a second clamping block which is slidably connected to the first clamping block, wherein the second clamping block and the first clamping block form the mounting groove.

[0014] By adopting the above technical solution, the limiting sliding-grooves make the first clamping blocks slide accurately in the diameter direction, ensures accurate positioning of the clamp bodies on the rotary disc, and improves the positioning accuracy of the workpieces. The sizes of the mounting grooves can be adjusted to clamp different sizes of workpieces, which ensures firm installation of the workpieces on the clamp bodies and prevents loosening or deviation during machining.

[0015] Preferably, one sides of the plurality of first clamping blocks close to the circle center 3 enclose a first clamping space, one sides of the plurality of first clamping blocks away from the 509265 circle center form a second clamping space, and the first clamping space and the second clamping space are used for clamping different workpieces.

[0016] By adopting the above technical solution, the first clamping space 1s formed by one sides of the plurality of first clamping blocks close to the circle center is used for clamping shaft parts. the second clamping space formed by one sides of the plurality of first clamping blocks away from the circle center form is used for clamping pipe parts, thereby increasing the versatility of the clamp.

[0017] Preferably, each linkage assembly includes:

[0018] a rotating block, which is provided with a rotating limiting-groove and arranged in the rotary disc;

[0019] a screw rod, wherein a fixture block is arranged on the screw rod, the fixture block is arranged in the rotating limiting-groove, and the screw rod is rotatably connected to the rotating block;

[0020] a nut, which is fixedly connected to the first clamping block, and the screw rod is in threaded connection with the nut;

[0021] a first gear, which is coaxially arranged and fixedly connected with the screw rod; and

[0022] a connector, which is used for driving the first gears of different clamp bodies to rotate synchronously.

[0023] By adopting the above solution, the first gear rotates to drive the screw rod to rotate, and the screw rod rotates to drive the nut to move in a direction close to the circle center of the rotary disc or away from the circle center of the rotary disc, and then drive the first clamping block to move, such that the workpiece is clamped. The connector is used for driving the plurality of first gears to rotate synchronously, thereby achieving a function of clamping the workpieces synchronously by the plurality of clamp bodies. Moreover, when shaft or pipe parts are clamped, a function of automatic centering is also achieved. 4

[0024] Preferably, each connector includes: LU509265

[0025] a second gear, which is fixedly connected to the first gear;

[0026] a transmission toothed belt, which is in mesh with the second gear; and

[0027] steering pulleys, which are arranged at intervals between the adjacent clamp bodies and slidably connected to the transmission toothed belt.

[0028] By adopting the above technical solution, when the first gear on one of the clamp bodies rotates, the second gear on the same clamp body is then driven to rotate. The second gear rotates to drive the transmission toothed belt meshed therewith to rotate, then drive the second gear on the adjacent clamp body to rotate, and then drive the screw rod on the adjacent clamp body to rotate, so that the plurality of clamp bodies move synchronously, thereby achieving an effect of facilitating rapid switching of workpieces for machining.

[0029] Preferably, each first clamping block includes:

[0030] an arc-shaped sleeve, which is installed close to the circle center of the rotary disc; and

[0031] an elastic sheet, which is arranged on the arc-shaped sleeve.

[0032] By adopting the above technical solution, the shaft parts are clamped conveniently by the arc-shaped sleeve. Compared with plane clamping, the arc surface clamping can increase a contact area between each workpiece and the corresponding clamp body, thereby achieving more tight clamping. However, the adaptability of the clamp bodies can be increased by arranging the elastic sheets on the arc-shaped sleeves, because the shaft parts of different diameters may not necessarily fit the radians of the arc-shaped sleeves during machining. The design of the elastic sheets makes it possible to automatically adjust the shapes of the elastic sheets on the arc-shaped sleeves so as to adapt to the workpieces of different diameters during clamping, thereby increasing the adaptability.

[0033] Preferably, each first clamping block is provided with friction patterns.

[0034] By using the above technical solution, the friction patterns increase a friction force between each clamp body and the corresponding workpiece, thereby increasing a clamping force. 5

Moreover, the friction patterns facilitate achieving uniform distribution of the friction force, 509265 between the clamp and the workpiece and avoiding excessive local stresses, and reduce the risk of deformations and damages to the workpieces.

[0035] Preferably, the multi-station clamp further includes second driving parts, wherein each second driving part is arranged on the first clamping block, an output end of the second driving part is fixedly connected to the second clamping block, and the second driving part is used for driving the second clamping block to move close to or away from the circle center of the rotary disc.

[0036] By adopting the above technical solution, the second driving parts are used for driving the second clamping blocks to move close to or away from the first clamping blocks, such that the workpieces on the plurality of clamp bodies can be clamped and disassembled. The first clamping blocks and the second clamping blocks are suitable for clamping small workpieces and can achieve simultaneous machining on a plurality of stations.

[0037] Preferably, each second driving part is a hydraulic pump, and an output shaft of the hydraulic pump is fixedly connected to the second clamping block.

[0038] By adopting the above technical solution, the workpiece between the first clamping block and the second clamping block can be clamped conveniently.

[0039] Second aspect

[0040] The present application provides a one-step forming method for high-precision part, which uses the multi-station clamp in high-precision part machining. The one-step forming method includes the following steps:

[0041] SI. providing a rotary disc, wherein a first driving part is arranged at the bottom of the rotary disc and used for driving the rotary disc to rotate;

[0042] 582. arranging a plurality of clamp bodies evenly on the rotary disc, wherein the plurality of clamp bodies are slidably connected to the rotary disc in a diameter direction of the rotary disc, and each clamp body is provided with a mounting groove which is used for 6 accommodating a workpiece to be clamped, LU509265

[0043] S3. connecting a plurality of clamp bodies fixedly to the linkage assemblies, wherein the linkage assemblies are used for driving the plurality of clamp bodies to move close to or away from the circle center of the rotary disc at the same time; and

[0044] S4. providing a tool, driving the rotary disc to rotate through the first driving part such that the clamp bodies rotate accordingly, and performing one-timing machining forming on the plurality of workpieces by using the tool.

[0045] By using the above technical solution, since the plurality of clamp bodies are rotated by using the rotary disc, the workpiece on another clamp body can be machined after one workpiece is machined, so no frequent tool change and debugging are not needed, thereby promoting the construction efficiency.

[0046] In summary, the present application includes at least one of the following beneficial technical effects:

[0047] 1, by arranging the rotary disc, the plurality of clamp bodies and the plurality of linkage assemblies, the workpieces on the plurality of clamp bodies can further be machined through one tool; and meanwhile, since no frequent tool change and debugging are needed for the rotary disc, rapid switching for machining is facilitated, and the operation efficiency is improved;

[0048] 2, by arranging the rotating blocks, the screw rods, the nuts, the first gears and the connectors, the plurality of clamp bodies are driven to move close to or away from the circle center of the rotary disc at the same time, such that surfaces to be machined of the plurality of workpieces on the clamp bodies are located on the same round line, which is convenient for rapid switching for machining; and an operator can operate the workpieces on the plurality of clamps at the same time, thereby greatly improving the production efficiency and the operation efficiency; and

[0049] 3, by providing the one-step molding method for high-precision parts, no frequent tool 7 change and debugging are needed, thereby promoting the construction efficiency. LU509265

BRIEF DESCRIPTION OF THE DRAWINGS

[0050] FIG. 1 is a schematic diagram of an overall structure in Embodiment 1 of the present application;

[0051] FIG. 2 is a schematic diagram of a local structure in Embodiment 1 of the present application;

[0052] FIG. 3 is a top view of the overall structure in Embodiment 1 of the present application;

[0053] FIG. 4 is a sectional view at Part B-B in FIG. 3; and

[0054] FIG. 5 is an enlarged view of Part A in FIG. 4.

[0055] In the drawings: 1-rotary disc, 11-limiting sliding-groove; 12-first driving part; 2-clamp body; 21-mounting groove; 22-first clamping block; 221-arc-shaped sleeve; 222-elastic sheet, 223-friction pattern; 23-second clamping block; 3-linkage assembly; 31-rotating block; 32-screw rod; 321-fixture block; 33-nut; 34-first gear; 35-connector; 351-second gear; 352-transmission toothed belt; 353-steering pulley; and 4-second driving part.

DETAILED DESCRIPTION

[0056] The present application will be further described in detail below with reference to FIGS. 1toS.

[0057] First aspect

[0058] Embodiment 1:

[0059] Referring to FIG. 1, a multi-station clamp in high-precision part machining includes a rotary disc 1, a plurality of clamp bodies 2 and a plurality of linkage assemblies 3.

[0060] Referring to FIG. 1, a first driving part 12 is arranged at the bottom of the rotary disc 1 and used for driving the rotary disc 1 to rotate. A servo motor is adopted as the first driving part 8

12, an output shaft of the servo motor is fixedly connected to the bottom of the rotary disc 1, and, 509265 the servo motor works to drive the rotary disc 1 to rotate. Three of the plurality of clamp bodies 2 are used in this embodiment. The three clamp bodies 2 are evenly arranged above the rotary disc 1 in a radial shape with a circle center of the rotary disc 1 as a center and slidably connected to the rotary disc 1 in a diameter direction of the rotary disc 1. Each clamp body 2 is provided with a mounting groove 21 which is used for accommodating a workpiece to be clamped. The plurality of clamp bodies 2 can clamp and machine a plurality of workpieces when the plurality of workpieces are machined. After one tool is used for machining the workpiece on one of the clamp bodies 2, the workpieces on the remaining clamp bodies 2 are driven to move close to this tool by rotating the rotary disc 1. Further, the workpieces on the plurality of clamp bodies 2 can further be machined by this tool while no frequent tool change and debugging are needed.

[0061] Referring to FIG. 1 and FIG. 2, each clamp body 2 includes a first clamping block 22 and a second clamping block 23. The rotary disc 1 is provided with a limiting sliding-groove 11 in the diameter direction, the bottom of the first clamping block 22 is I-shaped, and the first clamping block 22 is slidably connected into the limiting sliding-groove 11. The I-shaped limiting sliding-groove 11 can achieve accurate guiding and limiting, avoid the first clamping block 22 from moving up and down, and prevent loosening or offset in the machining process.

The second clamping block 23 is slidably connected to the first clamping block 22, and a mounting groove 21 for clamping a small workpiece is formed between the second clamping block 23 and the first clamping block 22.

[0062] Referring to FIG. 1 and FIG. 2, the plurality of linkage assemblies 3 are fixedly connected to the clamp bodies 2, and the linkage assemblies 3 are used for driving the plurality of clamp bodies 2 to move close to or away from the circle center of the rotary disc 1 at the same time, such that surfaces to be machined of the plurality of workpieces on the clamp bodies 2 are located on the same round line, which is convenient for rapid switching for machining. An operator can operate the workpieces on the plurality of clamp bodies at the same time, thereby 9 greatly improving the production efficiency and operation efficiency. LU509265

[0063] Referring to FIG. 1 and FIG. 2, the limiting sliding-grooves 11 make the first clamping blocks 22 slide accurately in the diameter direction, ensure accurate positioning of the clamp bodies 2 on the rotary disc 1, and improve the positioning accuracy of the workpieces, thereby ensuring the machining accuracy. The second clamping block 23 and the first clamping block 22 are slidably connected to form the mounting groove 21 for accommodating the workpiece to be clamped. The sizes of the mounting grooves 21 can be adjusted for clamping different sizes of workpieces. By clamping different workpieces with the first clamping blocks 22 and the second clamping blocks 23, the plurality of clamp bodies 2 can be used for clamping workpieces with relatively large sizes, and the first clamping blocks 22 and the second clamping blocks 23 can also be used for clamping the workpieces with relatively small sizes, thereby achieving a clamping effect of a plurality of stations.

[0064] Referring to FIG. 1 to FIG. 3, one sides of the plurality of first clamping blocks 22 close to the circle center enclose a first clamping space, one sides of the plurality of first clamping blocks 22 away from the circle center form a second clamping space, and the first clamping space and the second clamping space are used for clamping different workpieces. The first clamping space is used for clamping shaft parts, and the second clamping space formed by one sides of the plurality of first clamping blocks away from the circle center is used for clamping pipe parts, thereby increasing the versatility of the clamp.

[0065] Referring to FIG. 1 and FIG. 2, an arc-shaped sleeve 221 is arranged on the first clamping block 22, the arc-shaped sleeve 221 is installed close to the circle center of the rotary disc 1, and the elastic sheet 222 is arranged on the arc-shaped sleeve 221. The shaft parts are clamped conveniently by the arc-shaped sleeve 221. Compared with plane clamping, the arc surface clamping can increase a contact area between each workpiece and the corresponding clamp body 2, thereby achieving more tight clamping. However, the adaptability of the clamp bodies 2 can be increased by arranging the elastic sheets 222 on the arc-shaped sleeves 221, 10 because the shaft parts of different diameters may not necessarily fit the radians of the, 509265 arc-shaped sleeves 221 during machining. In order to adapt to the workpieces, it is necessary to replace the arc-shaped sleeves 221 having different radians before machining, which is more troublesome. Therefore, the design of the elastic sheets 222 makes it possible to automatically adjust the shapes of the elastic sheets 222 on the arc-shaped sleeves 221 so as to adapt to the workpieces of different diameters during clamping, thereby increasing the adaptability.

[0066] Referring to FIG. 4, each first clamping block 22 is provided with friction patterns 223.

The friction patterns 223 increase a friction force between each clamp body 2 and the corresponding workpiece, thereby increasing a clamping force. It is essential to ensure that the workpieces are firmly held in position on the clamp bodies 2, especially cutting, machining, or other process operations are required. Moreover, the friction patterns 223 facilitate achieving uniform distribution of the friction force between the clamp and the workpieces and avoiding excessive local stresses, and reduce the risk of deformations and damages to the workpieces.

[0067] Referring to FIG. 4 and FIG. 5, each linkage assembly 3 includes a rotating block 31, a screw rod 32, a nut 33, a first gear 34 and a connector 35. The rotating block 31 is provided with a rotating limiting-groove and arranged in the rotary disc 1. No thread is arranged on one side of the screw rod 32 away from the circle center, a fixture block 321 is fixed on the screw rod 32, and the fixture block 321 is annularly sleeved on the screw rod 32. The annular fixture block 321 is arranged in the rotating limiting-groove, and the screw rod 32 is rotatably connected to the rotating block 31. The nut 33 is fixedly connected to the first clamping block 22, and the screw rod 32 is in threaded connection with the nut 33. The first gear 34 is coaxially arranged and fixedly connected with the screw rod 32. The connectors 35 are used for driving the first gears 34 of different clamp bodies 2 to rotate synchronously.

[0068] Referring to FIG. 2, the driving motor (not shown) is arranged on the rotary disc, and one of the screw rods 32 is driven by the driving motor to rotate,

[0069] the screw rod 32 rotates to drive the first gear 34 to rotate, and the screw rod 32 rotates 11 to drive the nut 33 to move in a direction close to the circle center of the rotary disc 1 or away 509265 from the circle center of the rotary disc 1, and then drive the first clamping block 22 to move, such that the workpieces are clamped. The connectors are used for driving the plurality of first gears 34 to rotate synchronously, thereby achieving a function of clamping the workpieces synchronously by the plurality of clamp bodies 2. Moreover, when shaft or pipe parts are clamped, a function of automatic centering is also achieved.

[0070] Moreover, referring to FIG. 4, when the workpieces are clamped, a movement speed of the plurality of clamp bodies 2 should not be too fast, because too fast speeds can cause damages to the surfaces of the workpieces. The screw rod 32 and the nut 33 are adopted to form a screw rod 32 and nut 33 pair mechanism, which can avoid this situation. Because the screw rod 32 and nut 33 pair mechanism has the characteristics of slow and stable movement, when the screw rod 32 rotates rapidly, the rapid rotation can be effectively transformed into the small-range movement of the nut 33, and then the need to drive the first clamping block 22 to gradually move and clamp is satisfied. In addition, in this embodiment, the screw rod 32 which has a smaller pitch and a larger diameter makes it possible to be suitable for the clamping work that requires high-precision position control. Furthermore, due to the existence of a thread friction force, the screw rod 32 and nut 33 pair has a self-locking performance. That is, when the screw rod 32 stops rotating, the first clamping block 22 will not move, avoiding loosening during clamping.

[0071] Referring to FIG. 3 and FIG. 4, each connector 35 includes a second gear 351, a transmission toothed belt 352 and steering pulleys 353. The second gear 351 is close to and fixedly connected to the first gear 34. The transmission toothed belt 352 1s made of a flexible material. The bottom of the transmission toothed belt is attached to the second gear 351 and is provided with teeth. The transmission toothed belt is in mesh with the second gear 351. A plurality of (only three pairs shown) steering pulleys 353 are arranged pairwise at intervals between the adjacent clamp bodies 2 and slidably connected to the transmission toothed belt. 12

Each steering pulley 353 includes a connecting rod. The connecting rod is arranged in parallel on, 509265 a disc surface of the rotary disc 1, and two pulleys are arranged on the connecting rod. When the first gear 34 on one of the clamp bodies 2 rotates, the second gear 351 on the same clamp body 2 is then driven to rotate. The second gear 351 rotates to drive the transmission toothed belt 352 meshed therewith to rotate, then drive the second gear 351 on the adjacent clamp body 2 to rotate, and then drive the screw rod 32 on the adjacent clamp body 2 to rotate, thereby achieving an effect of synchronous movement of the plurality of clamp bodies 2.

[0072] Referring to FIG. 1, a second driving part 4 is arranged on each clamp body 2. The second driving part 4 is arranged on the first clamping block 22, an output end of the second driving part 4 is fixedly connected to the second clamping block 23, and the second driving part 4 is used for driving the second clamping block 23 to move close to or away from the circle center of the rotary disc 1. The second driving part 4 is used for driving the second clamping block 23 to move close to or away from the first clamping block 22, such that the workpieces on the plurality of clamp bodies 2 can be clamped and disassembled. The first clamping blocks and the second clamping blocks are suitable for clamping small workpieces and can achieve simultaneous machining on a plurality of stations. The second driving part 4 is a miniature hydraulic pump, and an output shaft of the miniature hydraulic pump is fixedly connected to the second clamping block 23.

[0073] An implementation principle is as follows.

[0074] Firstly, the servo motor arranged at the bottom of the rotary disc 1 serves as the first driving part 12, and the output shaft is connected to the bottom of the rotary disc 1, so that the precise rotation of the rotary disc 1 is realized. The plurality of clamp bodies 2 are uniformly arranged on the rotary disc 1 in the diameter direction, and the workpieces to be machined are accommodated by the mounting grooves 21, forming a radial arrangement. In the machining process, the rotary disc 1 rotates to drive the clamp bodies 2 to move close to the tool position, thereby achieving one-step clamping and machining on a plurality of workpieces, avoiding the 13 needs for frequent tool change and debugging, and improving the working efficiency. The first 509265 clamping block 22 of each clamp body 2 can achieve accurate guiding and limiting through the

I-shaped limiting sliding-groove 11, thereby preventing loosening or offset in the machining process. The second clamping block 23 and the first clamping block 22 form the mounting groove 21 for accommodating small workpieces, thereby achieving the adaptability of different sizes of workpieces.

[0075] Moreover, the plurality of linkage assemblies 3 are connected to the clamp bodies 2, and the plurality of clamp bodies 2 move close to or away from the circle center of the rotary disc 1 at the same time, such that surfaces of the workpieces to be machined are located on the same round line, which is convenient for rapid switching for machining and improving the production efficiency. Moreover, the design of the arc-shaped sleeves 221 and the elastic sheets 222 on the clamp bodies 2 increases the clamping fastness and adaptability to the shaft parts, while the friction patterns 223 improve the clamping force to ensure that the workpieces are stably held on the clamp bodies 2. The screw rod 32 and nut 33 pair mechanism in each linkage assembly 3 avoids the problem that the clamp bodies 2 move too fast and cause workpiece damages by finely tuning the movement speed of the screw rod 32. A transmission system in the connector 35 realizes the synchronous movement of the plurality of clamp bodies 2, while the miniature hydraulic pump is used as the second driving part 4 to accurately control the movement of the second clamping block 23, such that the workpieces on the plurality of clamp bodies 2 are clamped and dissembled, thereby achieving one-step forming for machining on a plurality of stations.

[0076] Second aspect

[0077] A one-step forming method for high-precision part uses the multi-station clamp in high-precision part machining. The method includes the following steps:

[0078] S1. providing a rotary disc 1, wherein a first driving part 12 is arranged at the bottom of the rotary disc and used for driving the rotary disc 1 to rotate; 14

[0079] S2. arranging a plurality of clamp bodies 2 evenly on the rotary disc 1, wherein the 509265 plurality of clamp bodies 2 are slidably connected to the rotary disc 1 in a diameter direction of the rotary disc 1, and each clamp body 2 is provided with a mounting groove 21 which is used for accommodating a workpiece to be clamped,

[0080] S3. connecting a plurality of clamp bodies 2 fixedly to the linkage assemblies 3, wherein the linkage assemblies 3 are used for driving the plurality of clamp bodies 2 to move close to or away from the circle center of the rotary disc 1 at the same time; and

[0081] S4. providing a tool, driving the rotary disc 1 to rotate through the first driving part 12 such that the clamp bodies 2 rotate accordingly, and performing one-timing machining forming on the plurality of workpieces by using the tool.

[0082] Since the plurality of clamp bodies 2 are rotated by using the rotary disc 1, the workpiece on another clamp body 2 can be machined after one workpiece is machined, so no frequent tool change and debugging are not needed, thereby promoting the construction efficiency.

[0083] It should be noted that the hydraulic pumps and the arc-shaped sleeves 221 in this embodiment are both equipment purchased on the market, and their models can be selected or customized according to actual needs. Such equipment is used in this patent, but not improved for their structures and functions. The setting methods, installation methods and electrical connection modes of such equipment may be debugged by a person skilled in the art in accordance with the requirements of their instruction manuals.

[0084] The above are the preferred embodiments of the present application and are not intended to limit the protection scope of the present application. Therefore, any equivalent changes made in accordance with the structure, shape and principle of the present application shall fall within the protection scope of the present application. 15

Claims

WHAT IS CLAIMED IS: LUS09265

1. A multi-station clamp in high-precision part machining, comprising: a rotary disc (1), wherein a first driving part (12) is provided at a bottom of the rotary disc, and the rotary disc (1) is configured for driving the rotary disc (1) to rotate; a plurality of clamp bodies (2) which are evenly arranged on the rotary disc (1) in a radial shape with a circle center of the rotary disc (1) as a center and slidably connected to the rotary disc (1) in a diameter direction of the rotary disc (1), wherein each clamp body (2) is provided with a mounting groove (21) which is used for accommodating a workpiece to be clamped; and a plurality of linkage assemblies (3) which are fixedly connected to the clamp bodies (2) and used for driving the plurality of clamp bodies (2) to move close to or away from the circle center of the rotary disc (1) simultaneously.

2. The multi-station clamp in high-precision part machining according to claim 1, wherein each clamp body (2) comprises: a first clamping block (22), wherein the rotary disc (1) is provided with a limiting sliding-groove (11) in the diameter direction, and the first clamping block (22) is slidably arranged in the limiting sliding-groove (11); and a second clamping block (23) which is slidably connected to the first clamping block (22), wherein the second clamping block (23) and the first clamping block (22) form the mounting groove (21).

3. The multi-station clamp in high-precision part machining according to claim 2, wherein one sides of the plurality of first clamping blocks (22) close to the circle center enclose a first clamping space, one sides of the plurality of first clamping blocks (22) away from the circle center form a second clamping space, and the first clamping space and the second clamping space are used for clamping different workpieces.

4. The multi-station clamp in high-precision part machining according to claim 2, wherein each linkage assembly (3) comprises: 16 a rotating block (31), which is provided with a rotating limiting-groove and arranged in the 509265 rotary disc (1); a screw rod (32), wherein a fixture block (321) is provided on the screw rod (32), the fixture block (321) is arranged in the rotating limiting-groove, and the screw rod (32) is rotatably connected to the rotating block (31); a nut (33), which is fixedly connected to the first clamping block (22), wherein the screw rod (32) is in threaded connection with the nut (33); a first gear (34), which is coaxially arranged and fixedly connected with the screw rod (32); and a connector (35), which is used for driving the first gears (34) of the different clamp bodies (2) to rotate synchronously.

5. The multi-station clamp in high-precision part machining according to claim 4, wherein each connector (35) comprises: a second gear (351), which is fixedly connected to the first gear (34); a transmission toothed belt (352), which is in mesh with the second gear (351); and steering pulleys (353), which are arranged at intervals between adjacent clamp bodies (2) and slidably connected to the transmission toothed belt.

6. The multi-station clamp in high-precision part machining according to claim 2, wherein each first clamping block (22) further comprises: an arc-shaped sleeve (221), which is installed close to the circle center of the rotary disc (1); and an elastic sheet (222), which is arranged on the arc-shaped sleeve (221).

7. The multi-station clamp in high-precision part machining according to claim 2, wherein each first clamping block (22) is provided with friction patterns (223).

8. The multi-station clamp in high-precision part machining according to claim 2, further comprising second driving parts (4), wherein each second driving part (4) is arranged on a 17 respective first clamping block (22), an output end of the second driving part (4) is fixediy 09265 connected to the second clamping block (23), and the second driving part (4) is used for driving the second clamping block (23) to move close to or away from the circle center of the rotary disc

(1).

9. The multi-station clamp in high-precision part machining according to claim 8, wherein each second driving part (4) is a hydraulic pump, and an output shaft of the hydraulic pump is fixedly connected to the second clamping block (23).

10. A one-step forming method for high-precision part, which uses the multi-station clamp in high-precision part machining according to any one of claims 1 to 9, comprising the following steps:

S1. providing a rotary disc (1), wherein the first driving part (12) is arranged at the bottom of the rotary disc and used for driving the rotary disc (1) to rotate;

S2. arranging the plurality of clamp bodies (2) evenly on the rotary disc (1), wherein the plurality of clamp bodies (2) are slidably connected to the rotary disc (1) in the diameter direction of the rotary disc (1), and each clamp body (2) is provided with a mounting groove (21) which is used for accommodating a workpiece to be clamped,

S3. connecting the plurality of clamp bodies (2) fixedly to the linkage assemblies (3), wherein the linkage assemblies (3) are used for driving the plurality of clamp bodies (2) to move close to or away from the circle center of the rotary disc (1) simultaneously; and

S4. providing a tool, driving the rotary disc (1) to rotate through the first driving part (12), such that the clamp bodies (2) rotate accordingly, and performing a one-step machining forming on the plurality of workpieces by using the tool. 18