A fixture device for wire cutting machining
By using symmetrically arranged clamping devices and hydraulic drive components, stable clamping of workpieces in wire EDM machining is achieved, solving the problems of low efficiency and poor versatility of existing clamping methods, and improving machining efficiency and accuracy.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHIJIAZHUANG MINGPU SHENG ELECTRONIC TECHNOLOGY CO LTD
- Filing Date
- 2025-09-01
- Publication Date
- 2026-07-24
AI Technical Summary
Existing wire EDM clamping methods are inefficient, lack versatility, are difficult to adapt to workpieces of different shapes and sizes, and are inconvenient to operate.
The device employs two symmetrically arranged clamping devices, including a movable frame, a first clamping plate, and a second clamping plate. The movable frame and lifting assembly are driven by hydraulic cylinders. In combination with the driving assembly and the lifting assembly, the clamping plates can be flexibly adjusted to adapt to workpieces of different sizes and shapes.
It improves the stability and flexibility of clamping, enhances adaptability to workpieces, reduces production costs and cycle time, and improves processing efficiency and accuracy.
Smart Images
Figure CN224543375U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of machining clamping, and in particular to a clamping device for wire EDM machining. Background Technology
[0002] Wire EDM is currently an important machining method in the field of mechanical processing, widely used in mold manufacturing, aerospace, electronics, and many other industries. With the continuous development of industry, the requirements for the precision, efficiency, and flexibility of wire EDM are also increasing. Wire EDM can process complex shapes, making the manufacturing of various precision parts possible and greatly promoting technological progress and product innovation in related industries. It enables the manufacture of complex structures that are difficult to achieve using traditional machining methods, improving product performance and quality.
[0003] In traditional wire EDM machining, workpiece clamping typically employs simple vises or fixed fixtures. Vises clamp the workpiece by manually rotating a screw; their operation is relatively simple and low-cost, suitable for small, regularly shaped workpieces. Fixed fixtures, on the other hand, are custom-made to fit the specific shape and size of the workpiece, securing it with bolts or other means. This method provides a more stable clamping force and is suitable for mass production of workpieces of the same specifications. Additionally, there are magnetic clamps that use magnetic force to hold the workpiece to the worktable, offering convenient operation, but they cannot be used with non-magnetic materials.
[0004] However, these existing clamping methods have certain drawbacks. Manual operation of vises is inefficient and inconvenient for large workpieces or those requiring frequent position adjustments; fixed fixtures have poor versatility, requiring redesign and remanufacturing of fixtures if the shape or size of the workpiece changes, increasing production costs and time; magnetic adsorption fixtures have limited applicability and cannot meet the processing needs of all types of workpieces. Utility Model Content
[0005] In order to increase the stability of workpiece clamping during wire EDM, and to make the operation convenient and practical, this application provides a clamping device for wire EDM.
[0006] The clamping device for wire EDM machining provided in this application adopts the following technical solution: A clamping device for wire EDM includes a worktable and a clamping device. Two sets of clamping devices are arranged symmetrically along the worktable. Each clamping device includes a movable frame, a first clamping plate, and a second clamping plate. The movable frame is vertically arranged. The first clamping plate and the second clamping plate slide on the movable frame in a direction that moves closer to or further away from each other. The movable frame is provided with a driving component for driving the first clamping plate and the second clamping plate to move. A hydraulic cylinder for driving the movable frame to move is provided on the worktable.
[0007] By adopting the above technical solution, the two sets of clamping devices are symmetrically arranged along the worktable, which can stably clamp the workpiece; the first clamping plate and the second clamping plate can slide relative to each other on the moving frame, and the distance between the two clamping plates can be flexibly adjusted with the drive component to adapt to workpieces of different sizes; the hydraulic cylinder can drive the moving frame to move, which is convenient for adjusting the clamping position and improves the versatility and flexibility of the clamping device.
[0008] Optionally, the drive assembly includes a slide rail, a bidirectional lead screw, a first screw block, and a second screw block. The slide rail is horizontally arranged and reciprocates along the vertical direction of the moving frame. The bidirectional lead screw rotates relative to the slide rail, and the rotation axis is horizontal. The first screw block and the second screw block slide within the slide rail and are threadedly connected to the bidirectional lead screw. The first screw block and the second screw block are symmetrically arranged along the center of the bidirectional lead screw. The first screw block is connected to the first clamping plate, and the second screw block is connected to the second clamping plate.
[0009] By adopting the above technical solution, the bidirectional lead screw rotates, and the first screw block and the second screw block move simultaneously relative to the bidirectional lead screw under the limiting and guiding action of the slide rail. This can drive the first clamping plate and the second clamping plate to move in directions that are closer to or further away from each other. The first clamping plate and the second clamping plate can determine the two clamping points of the workpiece. By interacting with the two clamping plates of the symmetrical clamping device, the stable clamping of the workpiece can be achieved.
[0010] Optionally, the movable frame is provided with a lifting assembly, which includes a screw and a screw sleeve. The screw is vertically arranged and rotatably connected to the movable frame. The screw sleeve is threaded onto the screw and connected to the screw. The slide rail is fixedly connected to the screw sleeve. A slide rail is provided on the movable frame in a direction parallel to the screw, and the slide rail slides in the slide rail.
[0011] By adopting the above technical solution, the screw sleeve can be moved on the screw by rotating the screw, thereby driving the slide rail fixedly connected to the screw sleeve to slide in the slide, so as to adjust the height of the first clamping plate and the second clamping plate to meet the clamping requirements of workpieces of different heights.
[0012] Optionally, a first pull rod and a second pull rod are rotatably connected to the threaded sleeve. The end of the first pull rod away from the threaded sleeve is rotatably connected to the first support rod, and the end of the second pull rod away from the threaded sleeve is rotatably connected to the second support rod.
[0013] By adopting the above technical solution, the first and second clamping plates can be finely adjusted at multiple angles, which enhances the adaptability to workpieces with different shapes and surface conditions and improves the stability and reliability of clamping.
[0014] Optionally, a first traction rod and a second traction rod are rotatably connected to the threaded sleeve. The end of the first traction rod away from the threaded sleeve is hinged to the first support rod, and the end of the second traction rod away from the threaded sleeve is hinged to the second support rod.
[0015] By adopting the above technical solution, when the screw sleeve is raised and lowered, the first pull rod and the second pull rod pull the first support rod and the second support rod respectively to move. The first pull rod and the second pull rod rotate relative to the screw sleeve, which can also adapt to the movement of the first support rod and the second support rod moving closer or further away from each other. This makes the movement of the first clamping plate and the second clamping plate more stable and synchronized in the horizontal direction, improves the clamping stability of the workpiece, and can better coordinate the movement of the clamping plate during the raising and lowering of the screw sleeve.
[0016] Optionally, a buffer pad is fixed to the side of the first clamping plate facing the workpiece.
[0017] By adopting the above technical solution, the impact force can be buffered when clamping the workpiece, thus avoiding damage to the workpiece caused by the first clamping plate.
[0018] Optionally, the hydraulic cylinder is horizontally arranged and fixedly connected to the worktable, and a rotating motor is fixedly connected to the movable end of the hydraulic cylinder. The motor shaft of the rotating motor is fixedly connected to the moving frame.
[0019] By adopting the above technical solution, the moving frame can be driven to move horizontally by a cylinder, and at the same time, the moving frame can be rotated by a rotary motor, thereby flexibly adjusting the position and angle of the clamping device to adapt to different processing needs.
[0020] Optionally, a lifting platform is slidably connected to the center of the workbench, and the lifting platform reciprocates in the vertical direction.
[0021] By adopting the above technical solution, the height of the workpiece in the vertical direction can be flexibly adjusted according to processing requirements, thereby improving the convenience and adaptability of processing.
[0022] In summary, this application includes at least one of the following beneficial technical effects: 1. Two sets of clamping devices on the worktable move relative to each other along the worktable. Combined with the mutual movement of the first and second clamping plates in each set, the workpiece can be clamped at four points, thereby achieving a more stable clamping effect. 2. Place the workpiece on the lifting platform and adjust it to a suitable position. The lifting component on the moving frame can make fine adjustments to the height of the first and second clamping plates. The drive component can adjust the distance between the first and second clamping plates. Combined with the ball joints of the first support rod and the first clamping plate, and the ball joints of the second support rod and the second clamping plate, a stable clamping effect can be achieved for workpieces of different sizes and shapes. Attached Figure Description
[0023] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application; Figure 2 This is a schematic diagram of the moving frame structure.
[0024] In the diagram, 1. Workbench; 11. Lifting platform; 12. Hydraulic cylinder; 13. Rotary motor; 2. Clamping device; 21. Moving frame; 22. First clamping plate; 23. Second clamping plate; 3. Drive assembly; 31. Slide rail; 32. Two-way lead screw; 33. First screw block; 331. First support rod; 34. Second screw block; 341. Second support rod; 35. First motor; 4. Lifting assembly; 41. Screw; 42. Screw sleeve; 43. Second motor; 5. First traction rod; 6. Second traction rod. Detailed Implementation
[0025] The following is in conjunction with the appendix Figures 1-2 This application will be described in further detail.
[0026] This application discloses a clamping device for wire EDM machining.
[0027] refer to Figure 1 A clamping device for wire EDM includes a worktable 1, which is horizontally arranged. A lifting platform 11 is arranged at the center of the worktable 1, and two sets of clamping devices 2 are symmetrically arranged on both sides of the worktable 1.
[0028] The workbench 1 is equipped with a hydraulic drive for lifting the lifting platform 11. The lifting platform 11 is frustum-shaped, and a drainage channel is provided around the edge of the surface of the lifting platform 11, as well as a flow channel inside, to facilitate the collection of processing fluid during wire cutting.
[0029] refer to Figure 1 and Figure 2Since the two sets of clamping devices 2 are symmetrically arranged and have the same structure, we will now take one set as an example. The clamping device 2 includes a movable frame 21, a first clamping plate 22 and a second clamping plate 23. The clamping device 2 is equipped with a lifting component 4 and a driving component 3. The movable frame 21 is arranged perpendicular to the surface of the worktable 1. A hydraulic cylinder 12 is arranged on the side of the movable frame 21 that is opposite to each other. The hydraulic cylinder 12 is arranged horizontally, with one end fixed to the edge of the worktable 1 and the other end fixed to a rotating motor 13. The motor shaft of the rotating motor 13 is fixedly connected to the movable frame 21. That is, the hydraulic cylinder 12 can drive the movable frame 21 to move horizontally in the direction of approaching or moving away from the lifting platform 11, and the rotating motor 13 can drive the movable frame 21 to rotate.
[0030] refer to Figure 1 and Figure 2 The lifting assembly 4 includes a screw 41, a screw sleeve 42, and a second motor 43. The second motor 43 is fixed to the top of the movable frame 21. The motor shaft of the second motor 43 is fixed to the screw 41. The screw 41 vertically penetrates the movable frame 21 and rotates relative to the movable frame 21. The screw sleeve 42 is looped around the screw 41.
[0031] refer to Figure 1 and Figure 2 The drive assembly 3 includes a slide rail 31, a bidirectional lead screw 32, a first screw block 33, a second screw block 34, and a first motor 35. The slide rail 31 is horizontally arranged, and the movable frame 21 has vertically opened slide tracks on both sides. The two ends of the slide rail 31 pass through the slide tracks on both sides and slide along the length of the slide tracks. The first motor 35 is fixed on the slide rail 31. The bidirectional lead screw 32 passes horizontally through the slide rail 31. The first screw block 33 and the second screw block 34 are threadedly connected to the bidirectional lead screw 32 and slide guided within the slide rail 31. The first screw block 33 and the second screw block 34 are axially symmetrically distributed along the center of the bidirectional lead screw 41. A first support rod 331 is horizontally fixed on the first screw block 33. The end of the first support rod 331 away from the first screw block 33 is ball-jointed with the first clamping plate 22. A second support rod 341 is horizontally fixed on the second screw block 34. The end of the second support rod 341 away from the second screw block 34 is ball-jointed with the second clamping plate 23.
[0032] The first clamping plate 22 and the second clamping plate 23 can be made of high-strength metal materials, such as stainless steel and alloy steel, to ensure that they have sufficient strength and wear resistance during clamping. The first clamping plate 22 and the second clamping plate 23 are both fixed with arc-shaped rubber pads on the side facing the workpiece, which can play the purpose of shock absorption and buffering, and can effectively protect the surface of the workpiece from damage.
[0033] refer to Figure 1 and Figure 2The screw sleeve 42 is fixedly connected to the slide rail 31. An L-shaped first pull rod 5 and a second pull rod 6 are rotatably connected to the screw sleeve 42. The first pull rod 5 is rotatably connected to the first support rod 331, and the second pull rod 6 is rotatably connected to the second support rod 341.
[0034] When the screw 41 rotates, the screw sleeve 42 moves threadedly with the screw 41. Under the limiting and guiding action of the slide rail 31, the drive assembly 3, the first clamping plate 22 and the second clamping plate 23 can be driven to adjust their vertical height. The second motor 43 drives the bidirectional screw 41 to rotate, so that the first screw block 33 and the second screw block 34 move along the bidirectional screw 32, thereby causing the first clamping plate 22 and the second clamping plate 23 to move closer or further away from each other, thus determining different clamping points of the workpiece and making it easier to adapt to workpieces of different sizes and shapes. During this process, the first pull rod 5 and the second pull rod 6 can increase the stability of the first clamping plate 22 and the second clamping plate 23 when they move, making the clamping effect more stable.
[0035] The implementation principle of the wire EDM clamping device in this embodiment is as follows: The wire EDM clamping device of this embodiment, through two symmetrically arranged clamping devices 2, combined with a movable, lifting, and rotatable structural design, can flexibly adjust the position, height, and angle of the clamping plates to adapt to workpieces of different shapes, sizes, and processing requirements, thus improving the versatility and ease of operation of the clamp. Simultaneously, the buffer pad protects the workpiece surface, and the lifting platform 11 further improves processing accuracy and convenience, overcoming the shortcomings of existing clamps such as poor versatility and inconvenient operation, and providing a more effective clamping solution for wire EDM.
[0036] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. A clamping device for wire EDM machining, comprising a worktable (1), characterized in that: It also includes a clamping device (2), which is provided in two sets and is symmetrically arranged along the worktable (1). The clamping device (2) includes a moving frame (21), a first clamping plate (22) and a second clamping plate (23). The moving frame (21) is vertically arranged. The first clamping plate (22) and the second clamping plate (23) slide on the moving frame (21) in a direction that approaches or moves away from each other. The moving frame (21) is provided with a driving assembly (3) for driving the first clamping plate (22) and the second clamping plate (23) to move. The worktable (1) is provided with a hydraulic cylinder (12) for driving the moving frame (21) to move.
2. The clamping device for wire EDM machining according to claim 1, characterized in that: The drive assembly (3) includes a slide rail (31), a bidirectional lead screw (32), a first screw block (33), and a second screw block (34). The slide rail (31) is horizontally arranged and moves back and forth along the vertical direction of the moving frame (21). The bidirectional lead screw rotates relative to the slide rail (31) and the rotation axis is horizontal. The first screw block (33) and the second screw block (34) slide in the slide rail (31) respectively and are threadedly connected to the bidirectional lead screw (32). The first screw block (33) and the second screw block (34) are symmetrically arranged along the center of the bidirectional lead screw (41). The first screw block (33) is connected to the first clamping plate (22), and the second screw block (34) is connected to the second clamping plate (23).
3. The clamping device for wire EDM machining according to claim 2, characterized in that: The movable frame (21) is provided with a lifting assembly (4), which includes a screw (41) and a screw sleeve (42). The screw (41) is vertically arranged and rotatably connected to the movable frame (21). The screw sleeve (42) is sleeved on the screw (41) and threadedly connected to the screw (41). The slide rail (31) is fixedly connected to the screw sleeve (42). A slide rail is provided on the movable frame (21) in a direction parallel to the screw (41), and the slide rail (31) slides in the slide rail.
4. A clamping device for wire EDM machining according to claim 3, characterized in that: The first screw block (33) is fixed with a first support rod (331), which is ball-jointed with the first clamping plate (22). The second screw block (34) is fixed with a second support rod (341), which is ball-jointed with the second clamping plate (23).
5. A clamping device for wire EDM machining according to claim 4, characterized in that: The threaded sleeve (42) is rotatably connected to a first pull rod (5) and a second pull rod (6). The end of the first pull rod (5) away from the threaded sleeve (42) is rotatably connected to the first support rod (331), and the end of the second pull rod (6) away from the threaded sleeve (42) is rotatably connected to the second support rod (341).
6. A clamping device for wire EDM machining according to claim 1, characterized in that: A buffer pad is fixed on the side of the first clamping plate (22) facing the workpiece.
7. A clamping device for wire EDM machining according to claim 1, characterized in that: The hydraulic cylinder (12) is horizontally arranged and fixedly connected to the workbench (1). A rotating motor (13) is fixedly connected to the movable end of the hydraulic cylinder (12). The motor shaft of the rotating motor (13) is fixedly connected to the moving frame (21).
8. A clamping device for wire EDM machining according to claim 1, characterized in that: The workbench (1) is slidably connected to a lifting platform (11) at its center position, and the lifting platform (11) reciprocates in the vertical direction.