Fixed clamp for numerical control wire cutting

Abstract

The utility model relates to the field of numerical control wire machining clamps, and discloses a numerical control wire cutting fixing clamp which comprises a base plate and a placing table, a clamping mechanism is arranged at the bottom of the base plate and comprises a fixing box, the fixing box is fixedly installed on the middle side of the bottom of the base plate, and two double-end air cylinders are installed in the fixing box; the double-head air cylinder is distributed in the fixed box in a cross shape; by arranging the clamping mechanism, two double-head air cylinders are arranged at the bottom of the base plate in a cross shape, so that the base plate drives a telescopic rod and a fixing plate to move, sliding blocks drive clamping plates to horizontally move in the direction of the containing table, and a workpiece at the upper end of the containing table is clamped and fixed in all directions through the multiple clamping plates; the fixing effect on the workpiece is enhanced, the phenomenon that the workpiece is loosened and deviates in the machining process is avoided, meanwhile, the air cylinder is used for driving the telescopic rod to reciprocate, the workpiece can be rapidly clamped or loosened, and the machining efficiency is improved.

Description

Technical Field

[0001] The present application relates to the field of CNC wire machining fixtures, and in particular to a CNC wire cutting fixing fixture. Background Art

[0002] Precision CNC wire cutting machine tools are composed of three major parts: mechanical, electrical and working fluid systems. The mechanical part of the wire cutting machine tool is the foundation, and its accuracy directly affects the working accuracy of the machine tool and also affects the full play of the electrical performance. The mechanical system is composed of the machine tool bed, coordinate table, wire feeding mechanism, wire rack mechanism, taper mechanism, lubrication system, etc. In the current market, wire cutting uses a continuously moving thin metal wire as an electrode to perform pulse spark discharge to erode metal and cut the workpiece into shape. Wire cutting is mainly used to process various complex and precise small workpieces. When using precision CNC wire cutting to process workpieces, the workpiece needs to be fixed;

[0003] Most of the existing CNC wire cutting fixing fixtures place the workpiece on the inner side of a fixing plate, and then turn the screw to drive the clamping plate to clamp and fix the workpiece. This fixing method can only clamp the processed workpiece in opposite directions, and the stability is not high. The workpiece is prone to loosening and offset during the processing, affecting the processing quality. For this reason, we urgently need to provide a CNC wire cutting fixing fixture. Utility Model Content

[0004] In order to solve the problem that the workpiece can only be clamped oppositely, the stability is not high, and the workpiece is prone to loosening and offset during the processing, which affects the processing quality, the present application provides a fixed clamp for CNC wire cutting.

[0005] The present application provides a CNC wire cutting fixture that adopts the following technical solution:

[0006] A fixing fixture for CNC wire cutting comprises a base plate and a placing table, wherein a clamping mechanism is arranged at the bottom of the base plate;

[0007] The clamping mechanism includes a fixing box, which is fixedly installed on the bottom middle side of the base plate, and two double-headed cylinders are installed inside the fixing box, and the double-headed cylinders are distributed in a cross shape inside the fixing box and telescopic rods are installed at both ends of the double-headed cylinders, and a fixing plate is fixedly installed on the other end of the telescopic rod, a sliding block is fixedly installed on the upper end of the fixing plate, a splint is fixedly installed on the top of the sliding block, and a rubber layer is fixedly installed on the inner side of the splint.

[0008] Preferably, the placement table is fixedly mounted on the middle part of the upper surface of the base plate, a plurality of rectangular grooves are evenly opened on the upper part of the base plate, and guide rods are fixedly mounted inside the plurality of rectangular grooves.

[0009] Preferably, a guide hole is opened on the side of the slider, the outer surface of the slider is slidably connected to the inner side of the rectangular groove, and the inside of the guide hole is movably connected to the outer surface of the guide rod.

[0010] Preferably, a fixing seat is fixedly mounted on the top of the splint, a screw is arranged on the inner side of the fixing seat, the bottom of the screw is rotatably connected to the bottom of the inner surface of the fixing seat, and the upper end of the screw passes through the fixing seat.

[0011] Preferably, a limit rod is fixedly installed on the inner surface of the fixing seat, a pressure plate is provided on the inner side of the fixing seat, a buffer layer is fixedly installed on the bottom of the pressure plate, and installation grooves are evenly opened at the four corners of the base plate.

[0012] Preferably, a screw hole and a connecting hole are provided at one end of the pressure plate close to the fixing seat, the inner surface of the screw hole is threadedly connected to the outer surface of the screw rod, and the inner side of the connecting hole is movably connected to the outer surface of the limiting rod.

[0013] In summary, this application includes the following beneficial technical effects:

[0014] 1. Set up a clamping mechanism, use two double-headed cylinders to be cross-shaped and set at the bottom of the base plate, so that they drive the telescopic rod and the fixed plate to move, so that the slider drives the clamping plate to move horizontally in the direction of the placement table, and use multiple clamping plates to clamp and fix the workpiece on the upper end of the placement table in all directions, which enhances the fixing effect of the workpiece and avoids the loosening and deviation of the workpiece during the processing. At the same time, the cylinder drives the telescopic rod to reciprocate, which can quickly clamp or loosen the workpiece and improve the processing efficiency;

[0015] 2. By adding a fixed seat on the upper part of multiple clamping plates, the pressure plate moves downward through the cooperation between the screw hole and the screw under the action of the rotating screw until the buffer layer fits with the upper part of the workpiece, thereby further improving the fixing and clamping effect of the workpiece, ensuring the stability of the workpiece during the processing, thereby improving the processing quality and being more convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall appearance structure of the embodiment of the application;

[0017] Figure 2 is a schematic diagram of the bottom structure of the substrate of the application embodiment;

[0018] Figure 3 is a structural schematic diagram of the upper end of the slider of the application embodiment;

[0019] Figure 4 It is an application example Figure 3 Enlarged cross-sectional structural diagram at point A in the middle.

[0020] Explanation of the accompanying drawings: 1. Base plate; 2. Placing table; 3. Rectangular groove; 4. Guide rod; 5. Clamping mechanism; 501. Fixing box; 502. Double-headed cylinder; 503. Telescopic rod; 504. Fixing plate; 505. Slider; 506. Guide hole; 507. Clamp; 508. Rubber layer; 6. Fixing seat; 7. Screw; 8. Limiting rod; 9. Pressure plate; 10. Screw hole; 11. Connecting hole; 12. Buffer layer; 13. Mounting groove. DETAILED DESCRIPTION

[0021] The following is combined with Figure 1-4 This application is described in further detail.

[0022] The present application embodiment discloses a fixing fixture for CNC wire cutting, referring to Figure 1-Figure 4 , comprising a substrate 1 and a placement table 2, wherein a clamping mechanism 5 is provided at the bottom of the substrate 1;

[0023] The clamping mechanism 5 includes a fixing box 501, which is fixedly mounted on the middle side of the bottom of the substrate 1. Two double-headed cylinders 502 are installed inside the fixing box 501. The fixing box 501 is provided to facilitate fixing the two double-headed cylinders 502 on the bottom of the substrate 1 to ensure the stability of the double-headed cylinders 502 during operation. The double-headed cylinders 502 are distributed in a cross shape inside the fixing box 501 and telescopic rods 503 are installed at both ends of the double-headed cylinders 502. The telescopic rods 503 are driven to reciprocate by the cylinders, so that the workpiece can be quickly clamped or released to improve the processing efficiency. A fixing plate 504 is fixedly mounted on the other end of the telescopic rod 503, a slider 505 is fixedly mounted on the upper end of the fixing plate 504, a clamping plate 507 is fixedly mounted on the top of the slider 505, and a rubber layer 508 is fixedly mounted on the inner side of the clamping plate 507. The placing table 2 is fixedly mounted on the middle of the upper surface of the substrate 1. Two double-headed cylinders 502 are cross-shapedly arranged at the bottom of the base plate 1, so that they drive the telescopic rod 503 and the fixed plate 504 to move, so that the slider 505 drives the clamping plate 507 to move horizontally in the direction of the placement table 2, and multiple clamping plates 507 are used to clamp and fix the workpiece on the upper end of the placement table 2 in all directions, thereby enhancing the fixing effect of the workpiece and avoiding the loosening and deviation of the workpiece during processing. A plurality of rectangular grooves 3 are evenly arranged on the upper part of the base plate 1, and guide rods 4 are fixedly installed inside the plurality of rectangular grooves 3. A guide hole 506 is arranged on the side of the slider 505, and the outer surface of the slider 505 is slidably connected to the inner side of the rectangular groove 3, and the inner part of the guide hole 506 is movably connected to the outer surface of the guide rod 4. The bottom of the clamping plate 507 is coordinated with the slider 505 and the rectangular groove 3, so that the movement and positioning of the clamping plate 507 are more precise, thereby ensuring the stability of the clamping plate 507 during movement.

[0024] Reference Figure 1-Figure 4The top of the clamping plate 507 is fixedly installed with a fixing seat 6, the inner side of the fixing seat 6 is provided with a screw 7, the bottom of the screw 7 is rotatably connected to the bottom of the inner surface of the fixing seat 6, the upper end of the screw 7 passes through the fixing seat 6, the inner surface of the fixing seat 6 is fixedly installed with a limit rod 8, and the inner side of the fixing seat 6 is provided with a pressure plate 9. By adding a fixing seat 6 on the upper part of the plurality of clamping plates 507, the pressure plate 9 moves downward through the screw hole 10 and the screw 7 under the action of rotating the screw 7 until the buffer layer 12 fits with the upper part of the workpiece, thereby further improving the fixing and clamping effect of the workpiece and ensuring the processing process. In order to ensure the stability of the workpiece during the machining process, improve the machining quality and make it more convenient to use, a buffer layer 12 is fixedly installed at the bottom of the pressure plate 9. The buffer layer 12 is installed to buffer the force applied by the pressure plate 9 to the workpiece to avoid scratches on the workpiece. Mounting grooves 13 are evenly arranged at the four corners of the base plate 1. A screw hole 10 and a connecting hole 11 are arranged at one end of the pressure plate 9 close to the fixed seat 6. The inner surface of the screw hole 10 is threadedly connected to the outer surface of the screw rod 7. The inner side of the connecting hole 11 is movably connected to the outer surface of the limit rod 8. The cooperation between the connecting hole 11 and the limit rod 8 ensures the stability of the pressure plate 9 when it moves up and down.

[0025] The implementation principle of a fixing fixture for CNC wire cutting in an embodiment of the present application is as follows: when using the device, firstly, the substrate 1 is installed to the upper end of the workbench of the CNC wire cutting machine tool through multiple installation grooves 13 and screws, and then the processed workpiece is placed on the placement table 2, and the two double-headed cylinders 502 at the bottom of the substrate 1 are started to drive multiple telescopic rods 503 to move, so that the slider 505 drives the clamping plate 507 to move horizontally in the direction of the placement table 2, and multiple clamping plates 507 are used to clamp and fix the workpiece on the upper end of the placement table 2 in all directions. After the clamping plate 507 has basically clamped and fixed the workpiece, the screw 7 is rotated to make the pressure plate 9 move downward through the screw hole 10 and the screw 7, until the buffer layer 12 is in contact with the upper part of the workpiece, and the workpiece is further fixed to ensure that no offset occurs.

[0026] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change;

[0027] Secondly: In the drawings of the embodiments disclosed in the present utility model, only the structures related to the embodiments disclosed in the present utility model are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present utility model can be combined with each other;

[0028] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model.

[0029] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A fixing fixture for CNC wire cutting, comprising a base plate (1) and a placing table (2), characterized in that: A clamping mechanism (5) is provided at the bottom of the base plate (1); The clamping mechanism (5) comprises a fixing box (501), wherein the fixing box (501) is fixedly mounted on the middle side of the bottom of the base plate (1), wherein two double-headed cylinders (502) are mounted inside the fixing box (501), wherein the double-headed cylinders (502) are distributed in a cross shape inside the fixing box (501), and telescopic rods (503) are mounted on both ends of the double-headed cylinders (502), wherein a fixing plate (504) is fixedly mounted on the other end of the telescopic rod (503), wherein a slider (505) is fixedly mounted on the upper end of the fixing plate (504), wherein a clamping plate (507) is fixedly mounted on the top of the clamping plate (505), and wherein a rubber layer (508) is fixedly mounted on the inner side of each clamping plate (507).

2. A fixing fixture for CNC wire cutting according to claim 1, characterized in that: The placement table (2) is fixedly mounted on the middle part of the upper surface of the base plate (1); a plurality of rectangular grooves (3) are evenly arranged on the upper part of the base plate (1); guide rods (4) are fixedly mounted inside the plurality of rectangular grooves (3).

3. A fixing fixture for CNC wire cutting according to claim 2, characterized in that: A guide hole (506) is provided on the side of the slider (505), the outer surface of the slider (505) is slidably connected to the inner side of the rectangular groove (3), and the interior of the guide hole (506) is movably connected to the outer surface of the guide rod (4).

4. The fixing fixture for CNC wire cutting according to claim 1, characterized in that: A fixing seat (6) is fixedly mounted on the top of each of the clamping plates (507), a screw rod (7) is arranged on the inner side of each of the fixing seats (6), the bottom of each of the screw rods (7) is rotatably connected to the bottom of the inner surface of each of the fixing seats (6), and the upper end of each of the screw rods (7) passes through the fixing seat (6).

5. A fixing fixture for CNC wire cutting according to claim 4, characterized in that: A limit rod (8) is fixedly mounted on the inner surface of the fixing seat (6), a pressure plate (9) is arranged on the inner side of the fixing seat (6), a buffer layer (12) is fixedly mounted on the bottom of the pressure plate (9), and mounting grooves (13) are evenly arranged at the four corners of the base plate (1).

6. A fixing fixture for CNC wire cutting according to claim 5, characterized in that: A screw hole (10) and a connecting hole (11) are provided at one end of the pressure plate (9) close to the fixing seat (6); the inner surface of the screw hole (10) is threadedly connected to the outer surface of the screw rod (7); and the inner side of the connecting hole (11) is movably connected to the outer surface of the limiting rod (8).

Images