A clamping and workpiece fixing device for a wire cutting machine.

Abstract

This utility model discloses a clamping and workpiece fixing device for a wire cutting machine, including a base. A pair of longitudinal guide rails are fixedly connected to the upper part of the base, and a pair of transverse guide rails are slidably connected above the two longitudinal guide rails. A fixing element is provided between the longitudinal and transverse guide rails. Steps are provided on both sides of the transverse guide rails. The device also includes a first movable seat and a second movable seat, with the two movable seats located above the two transverse guide rails. Two sliders are slidably connected to each of the two movable seats. A moving mechanism is provided between the first movable seat and the two sliders above it. Each slider is fixedly connected to two limiting rods, with the two limiting rods on each slider located on both sides of the higher surface of the transverse guide rail step. The fixing element is provided between the slider and the transverse guide rail. This utility model enhances the workpiece fixing effect by having the two longitudinal guide rails abut against the front and rear sides of the workpiece, and the limiting rods on the first and second movable seats abut against the left and right sides of the workpiece, respectively.

Description

Technical Field

[0001] This utility model relates to the field of metal workpiece manufacturing and processing technology, and in particular to a clamp and workpiece fixing device for a wire cutting machine. Background Technology

[0002] Wire cut electrical discharge machining (WEDM) is a type of electrical discharge machining. The wire cut machine was invented in the Soviet Union in 1960. Its basic physical principle is that free positive ions and electrons accumulate in the field and quickly form an ionized conductive channel.

[0003] The wire EDM machine tool was invented by the Lazarinko couple in the Soviet Union when they were studying the phenomenon and causes of corrosion damage to switch contacts caused by spark discharge. They discovered that the instantaneous high temperature of the electric spark could melt, oxidize and corrode the local metal, thus pioneering and inventing the electric spark machining method.

[0004] A pair of longitudinal guide rails are fixedly connected to the wire EDM machine. A pair of transverse guide rails are slidably connected above the two longitudinal guide rails. Steps are opened on the opposite surfaces of the two transverse guide rails. When cutting a workpiece with the wire EDM machine, the fixture or workpiece is placed directly between the two transverse guide rails, so that the two sides of the workpiece (or fixture) are placed on the two steps respectively. The two transverse guide rails press against the workpiece, limiting the longitudinal direction of the workpiece. The friction between the transverse guide rails and the workpiece limits the transverse direction of the workpiece. Since the metal wire does not contact the workpiece, the metal wire will not exert a force on the workpiece to cause it to move laterally. However, if the workpiece is limited by friction, it is easy for it to move when subjected to external forces. At the same time, the transverse guide rails will also slip when moving the workpiece for cutting, which will affect the processing of the workpiece. Utility Model Content

[0005] The purpose of this invention is to provide a clamp and workpiece fixing device for a wire cutting machine tool, which has the advantage of increasing the fixing effect on the workpiece.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0007] A clamping and workpiece fixing device for a wire cutting machine includes a base. A pair of longitudinal guide rails are fixedly connected to the upper part of the base. A pair of transverse guide rails are slidably connected above the two longitudinal guide rails. A fixing element is provided between the longitudinal guide rails and the transverse guide rails. The upper surface of the transverse guide rails is higher in the middle and lower on both sides, forming steps on both sides of the transverse guide rails. The device also includes a movable seat 1 and a movable seat 2, which are located above the two transverse guide rails. Two sliders are slidably connected to the upper part of each of the movable seats 1 and 2. The sliders slide along the longitudinal direction. A moving mechanism is provided between the movable seat 1 and the two sliders above it. The two sliders of the movable seat 1 are respectively opposite to the two sliders of the movable seat 2. Two limiting rods are fixedly connected to the facing surfaces of the corresponding two sliders. The two limiting rods on each slider are located on both sides of the higher surface of the transverse guide rail, and the two limiting rods on each slider are in contact with the side walls of the steps on both sides of the transverse guide rail. A fixing element is provided between the slider and the transverse guide rail.

[0008] Using the above technical solution, the moving mechanism on the first moving seat drives the two connected sliders to move towards each other, causing the two sliders to move away from or towards each other. The two limiting rods on the moving sliders exert force on the sidewalls of the steps on both sides of the transverse guide rails, thereby causing the two transverse guide rails to move away from or towards each other, adjusting the distance between the two transverse guide rails. The sidewalls of the steps on both sides of the moving guide rails exert force on the two limiting rods of the slider on the second moving seat, thereby causing the two sliders on the second moving seat to move away from or towards each other. The workpiece (or fixture) is placed on the two opposite steps of the two transverse guide rails, and then the moving mechanism drives... Two transverse guide rails move to abut against both ends of the workpiece. Then, the transverse guide rails are fixed to the longitudinal guide rails by a fixing component. Next, two movable seats move laterally, each of which drives two sliders on its upper part to move. The sliders drive the limiting rods to move, so that the two limiting rods of the two sliders on the same movable seat abut against the two ends of one side of the workpiece. Then, the sliders are fixed to the transverse guide rails by a fixing component. The transverse guide rails limit the longitudinal direction of the workpiece, and the limiting rods limit the lateral direction of the workpiece, thereby fixing the workpiece. This method is more effective than friction fixing and prevents the workpiece from moving relative to the guide rails.

[0009] Preferably, the moving mechanism is a bidirectional lead screw, which is horizontally rotatably connected to the upper part of the moving seat. The bidirectional lead screw passes through two sliders on the moving seat and is threadedly connected to the two sliders.

[0010] Using the above technical solution, rotating the bidirectional lead screw causes the two sliders on the first moving seat to move towards each other in the longitudinal direction relative to the first moving seat.

[0011] Preferably, the fixing component is a bolt and a nut. The longitudinal guide rail has a longitudinal T-slot. Bolts are inserted at both ends of each transverse guide rail. Nuts are embedded in the T-slots of the longitudinal guide rail. The heads of the bolts at both ends of the transverse guide rail are inserted into the T-slots of the longitudinal guide rail, and the bolts and nuts are threadedly connected. The higher surfaces of the two transverse guide rail steps are respectively provided with transverse T-slots. Each slider is threadedly connected with a vertical bolt. The head of each bolt is threadedly connected with a nut. The nuts of the bolts on the slider are embedded in the T-slots of the transverse guide rails.

[0012] Using the above technical solution, tighten the bolts on the two transverse guide rails to reduce the force exerted by the nuts on each bolt on the upper wall of the T-slot of the longitudinal guide rail. Then move the two transverse guide rails to adjust the distance between them, and then tighten the bolts on the transverse guide rails to fix them in place. Similarly, move and fix the two movable seats in the same way.

[0013] Preferably, a fixing component 2 is provided between the two sliders on the upper part of the movable seat 2 and the fixing component 2. The fixing component 2 includes a guide rod and a bolt 2. The guide rod is fixedly connected to the movable seat 2 and passes through the two sliders on the two movable seats 2. The sliders are slidably connected to the guide rod. The bolt 2 is threadedly connected to the sliders, and the end of the bolt 2 abuts against the guide rod.

[0014] Using the above technical solution, the moving mechanism on the first movable seat drives the two sliders connected to it to move towards each other. The two sliders drive the two transverse guide rails to move away from or towards each other. The transverse guide rails drive the two sliders on the second movable seat to move. Then, the second bolt on the slider is tightened to press against the guide rod, thus limiting the longitudinal direction of the slider.

[0015] Preferably, a rotating handle is fixedly connected to the end of the bidirectional lead screw.

[0016] The above technical solution facilitates the rotation of the lead screw.

[0017] Preferably, each slider has two limiting rods rotatably connected to a rotating wheel, and the rotating wheels of the two limiting rods of each slider are in contact with the side walls of the steps on both sides of the transverse guide rail.

[0018] Using the above technical solution, the slider drives the limit rod to move, the limit rod drives the rotating wheel to move, and the force between the rotating wheel and the longitudinal guide rail causes the rotating wheel to rotate, reducing the friction between the limit rod and the transverse guide rail, thereby better driving the limit rod to move. Attached Figure Description

[0019] Figure 1 This is an overall schematic diagram of the embodiment;

[0020] Figure 2 This is a top view of an embodiment;

[0021] Figure 3 This is a front view diagram of an embodiment;

[0022] Figure 4 This is a side view of an embodiment;

[0023] Figure 5 This is a sectional view along line AA;

[0024] Figure 6 This is an overall schematic diagram from another perspective of the embodiment;

[0025] Figure 7 This is an exploded view of the connection between the movable seat and the transverse guide rail.

[0026] Reference numerals in the attached diagram: 1. Base; 2. Longitudinal guide rail; 3. Transverse guide rail; 4. Movable seat one; 5. Movable seat two; 6. Slider; 7. Limiting rod; 8. T-slot; 9. Bolt one; 10. Nut; 11. Double-acting lead screw; 12. Guide rod; 13. Bolt two; 14. Rotary wheel; 15. Rotary handle. Detailed Implementation

[0027] The following description is merely a preferred embodiment of this utility model, and the scope of protection is not limited to this embodiment. All technical solutions falling within the scope of this utility model should be considered within the protection scope of this utility model. It should also be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

[0028] See Figure 1 , Figure 3 and Figure 6 A clamping and workpiece fixing device for a wire cutting machine includes a base 1. A pair of longitudinal guide rails 2 are fixedly connected to the upper part of the base 1, and a pair of transverse guide rails 3 are slidably connected above the two longitudinal guide rails 2. The upper surface of the longitudinal guide rails 2 has longitudinal T-slots 8. Bolts 9 are inserted at both ends of each transverse guide rail 3. Nuts 10 are embedded in the T-slots 8 of the longitudinal guide rails 2. The heads of the bolts 9 at both ends of the transverse guide rails 3 are inserted into the T-slots 8 of the two longitudinal guide rails 2, and the bolts 9 are threadedly connected to the nuts 10.

[0029] See Figure 2 , Figure 4 and Figure 5The upper surface of the transverse guide rail 3 is higher in the middle and lower on both sides, forming steps on both sides of the transverse guide rail 3. The higher surfaces of the two transverse guide rail 3 steps are respectively provided with transverse T-slots 8. It also includes a first movable seat 4 and a second movable seat 5. The two movable seats are located on the upper part between the two transverse guide rails 3. The upper part of the first movable seat 4 is horizontally rotatably connected to a double-acting screw 11. The double-acting screw 11 has two opposite threads. The end of the double-acting screw 11 is fixedly connected to a handle 15. The second movable seat 5 is fixedly connected to a guide rod 12. The upper parts of the first movable seat 4 and the second movable seat 5 are respectively slidably connected to two sliders 6. The two sliders 6 of the first movable seat 4 correspond one-to-one with the two sliders 6 of the second movable seat 5. The sliders 6 slide along the longitudinal direction. The bidirectional lead screw 11 on the movable seat 4 passes through the two sliders 6 thereon, and the two sliders 6 on the movable seat 4 are respectively located on the two threaded sections of the bidirectional lead screw 11. The bidirectional lead screw 11 is threadedly connected to the two sliders 6. The guide rod 12 on the movable seat 5 passes through the two sliders 6 thereon, and the sliders 6 are slidably connected to the guide rod 12.

[0030] See Figures 5 to 7 Two corresponding sliders 6 are fixedly connected to two limiting rods 7 on their facing surfaces. The two limiting rods 7 on each slider 6 are located on both sides of the higher surface of the transverse guide rail 3. The two limiting rods 7 on each slider 6 are rotatably connected to a rotating wheel 14. The rotating wheel 14 on each slider 6 contacts the side walls of the steps on both sides of the transverse guide rail 3. There is a horizontal distance between the end of the limiting rod 7 and the movable seat it is located on. Each slider 6 is threaded with a vertical bolt 9. The head of each bolt 9 is threaded with a nut 10. The nut 10 of the bolt 9 on the slider 6 is embedded in the T-slot 8 of the transverse guide rail 3. The two sliders 6 on the movable seat 5 are threaded with bolts 13. The end of the bolt 13 penetrates into the slider 6 and abuts against the guide rod 12.

[0031] Working principle: Based on the length of the workpiece (or fixture), the bidirectional lead screw 11 is rotated, causing the two sliders 6 on the moving seat 4 to move towards each other, making the two sliders 6 move away from or closer to each other. The two limiting rods 7 on each moving slider 6 exert force on the side walls of the steps on both sides of the transverse guide rail 3 on which it is located, thereby causing the two transverse guide rails 3 to move away from or closer to each other. Adjusting the distance between the two transverse guide rails 3, the side walls of the steps on both sides of the moving guide rail exert force on the two limiting rods 7 of the slider 6 on the moving seat 5, thereby causing the two sliders 6 on the moving seat 5 to move away from or closer to each other.

[0032] Place the workpiece (or fixture) on two opposing steps of the two transverse guide rails 3. Then rotate the double-acting screw 11 to move the two transverse guide rails 3 to abut against both ends of the workpiece. Tighten the bolts 9 on the two transverse guide rails 3 so that the nuts 10 on the bolts 9 press against the upper wall of the T-slot 8 of the longitudinal guide rail 2, thus fixing the transverse guide rails 3 and the longitudinal guide rail 2. Tighten the bolts 13 on the slider 6 to press against the guide rod 12, further limiting the longitudinal direction of the slider 6. Then move the two moving seats laterally, each moving seat moving the two sliders 6 on its upper part. The sliders 6 move the limiting rods 7, and the limiting rods 7 move the rotating wheel 14. At the same time, the rotating wheel 14 rotates. The two limiting rods 7 on the two sliders 6 on the same moving seat press against the two ends of one side of the workpiece. Then tighten the bolts 9 on the sliders 6 to fix the sliders 6 to the transverse guide rails 3. The transverse guide rail 3 limits the longitudinal direction of the workpiece, and the limiting rod 7 limits the longitudinal direction of the workpiece, thereby fixing the workpiece in place. This method is more effective than fixing by friction.

Claims

1. A clamping and workpiece fixing device for a wire cutting machine, comprising a base (1), wherein a pair of longitudinal guide rails (2) are fixedly connected to the upper part of the base (1), and a pair of transverse guide rails (3) are slidably connected above the two longitudinal guide rails (2), and a fixing member is provided between the longitudinal guide rails (2) and the transverse guide rails (3), characterized in that, The upper surface of the transverse guide rail (3) is higher in the middle and lower on both sides, forming steps on both sides of the transverse guide rail (3). It also includes a first movable seat (4) and a second movable seat (5). The first movable seat (4) and the second movable seat (5) are located in the upper part between the two transverse guide rails (3). The first movable seat (4) and the second movable seat (5) are slidably connected to two sliders (6). The sliders (6) slide along the longitudinal direction. A moving mechanism is provided between the first movable seat (4) and the two sliders (6) above it. The two sliders of the first movable seat (4) Block (6) is respectively opposite to the two sliders (6) of the second movable seat (5). The two corresponding sliders (6) are respectively fixedly connected to two limiting rods (7). The two limiting rods (7) on each slider (6) are respectively located on both sides of the higher surface of the transverse guide rail (3), and the two limiting rods (7) on each slider (6) are respectively in contact with the side walls of the steps on both sides of the transverse guide rail (3). There is a horizontal distance between the end of the limiting rod (7) and the movable seat it is located on. A fixing component is provided between the slider (6) and the transverse guide rail (3).

2. The clamping and workpiece fixing device for a wire cutting machine tool according to claim 1, characterized in that, The moving mechanism is a bidirectional lead screw (11), which is horizontally rotatably connected to the upper part of the moving seat (4). The bidirectional lead screw (11) passes through two sliders (6) on the moving seat (4), and the bidirectional lead screw (11) is threadedly connected to the two sliders (6).

3. The clamping and workpiece fixing device for a wire cutting machine tool according to claim 1, characterized in that, The fixing component is a bolt (9) and a nut (10). The longitudinal guide rail (2) has a longitudinal T-slot (8). Each transverse guide rail (3) has a bolt (9) at both ends. The nut (10) is embedded in the T-slot (8) of the longitudinal guide rail (2). The heads of the bolts (9) at both ends of the transverse guide rail (3) are inserted into the T-slot (8) of the longitudinal guide rail (2), and the bolts (9) and the nuts (10) are threaded together. The higher surfaces of the steps of the two transverse guide rails (3) have transverse T-slots (8). Each slider (6) is threaded with a vertical bolt (9). The head of each bolt (9) is threaded with a nut (10). The nut (10) of the bolt (9) on the slider (6) is embedded in the T-slot (8) of the transverse guide rail (3).

4. The clamping and workpiece fixing device for a wire cutting machine tool according to claim 1, characterized in that, The upper part of the movable seat 2 (5) is provided with two sliders (6) and a fixing component 2 between them. The fixing component 2 includes a guide rod (12) and a bolt 2 (13). The guide rod (12) is fixedly connected to the movable seat 2 (5). The guide rod (12) passes through the two sliders (6) on the two movable seats 2 (5). The sliders (6) are slidably connected to the guide rod (12). The bolt 2 (13) is threadedly connected to the sliders (6). The end of the bolt 2 (13) abuts against the guide rod (12).

5. The clamping and workpiece fixing device for a wire cutting machine according to claim 2, characterized in that, The end of the bidirectional lead screw (11) is fixedly connected to a rotating handle (15).

6. The clamping and workpiece fixing device for a wire cutting machine tool according to claim 1, characterized in that, Each slider (6) has two limiting rods (7) that are rotatably connected to a rotating wheel (14). The rotating wheel (14) of each slider (6) is in contact with the side wall of the steps on both sides of the transverse guide rail (3).

Images