Automatic clamp for CNC machining

Abstract

The utility model discloses an automatic clamp for CNC (computer numerical control) machining, which belongs to the field of automatic clamps and comprises a worktable, a plurality of moving strips are slidably connected to the top of the worktable, two fixing columns are fixedly connected to the tops of the moving strips, rotating plates are rotatably connected to the outer sides of the fixing columns, abutting blocks are slidably connected to the inner sides of the moving strips, and the rotating plates are rotatably connected to the outer sides of the moving strips. And clamping blocks are fixedly connected to one ends of the multiple rotating plates, one ends of the two rotating plates located on the same side movably abut against one side of the same abutting block, springs are fixedly connected to the tops of the multiple moving strips, and the other ends of the multiple springs are fixedly connected to one side of the corresponding abutting block. The guide rail clamping device is reasonable in structural design, through cooperation of the motor, the first connecting rod, the second connecting rod, the rotating strip, the abutting block and the worm gear, a guide rail to be machined can be clamped at multiple positions, and therefore the stability of the guide rail in the machining process is improved.

Description

Technical Field

[0001] This utility model relates to the field of automatic fixtures, and in particular to an automatic fixture for CNC machining. Background Technology

[0002] In the CNC machine tool machining process, the fixation and positioning of the workpiece is one of the key factors to ensure machining accuracy and efficiency. The air cushion guide is a modern mechanical experimental instrument. It uses a small air source to send compressed air into the inner cavity of the guide and sprays air out through small holes on the surface of the guide, forming a very thin air cushion layer between the guide surface and the slide, so that the slide floats on the air cushion layer and makes a near-resistance-free linear motion.

[0003] Existing machining fixtures often have simple structures when clamping air cushion guide rails, clamping the guide rails from only two positions. This can easily lead to the guide rails not being properly secured and affect subsequent machining. Therefore, we propose an automatic fixture for CNC machining to solve this problem. Utility Model Content

[0004] The purpose of this invention is to provide an automatic fixture for CNC machining to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An automatic fixture for CNC machining includes: a worktable, a plurality of movable bars slidably connected to the top of the worktable, two fixed posts fixedly connected to the top of each of the movable bars, rotating plates rotatably connected to the outer sides of each of the fixed posts, and abutment blocks slidably connected to the inner sides of each of the movable bars, clamping blocks fixedly connected to one end of each of the rotating plates, and two rotating plates on the same side having one end movably abutting against the same abutment block, springs fixedly connected to the top of each of the movable bars, the other ends of each of the springs fixedly connected to the corresponding abutment block, and fixed cylinders fixedly connected to one side of each of the abutment blocks, with sliding rods slidably connected to the inner sides of each of the fixed cylinders, and one side of each sliding rod fixedly connected to the top of the corresponding movable bar.

[0007] Preferably, multiple No. 1 frames are fixedly connected to the top of the workbench, and the same rotating roller is rotatably connected between two No. 1 frames located on the same side. A No. 1 connecting rod is fixedly connected to the outer side of each of the multiple rotating rollers, and a No. 1 column is rotatably connected to the other end of each of the multiple No. 1 connecting rods. A No. 2 connecting rod is fixedly connected to the outer side of each of the multiple No. 2 connecting rods, and a No. 2 column is rotatably connected to the other end of each of the multiple No. 2 columns. A movable frame is fixedly connected to the outer side of each of the multiple No. 2 columns, and two movable frames located on the same side are fixedly connected to the outer side of the same movable bar.

[0008] Preferably, multiple motors are fixedly connected to the top of the workbench, and each of the output ends of the multiple motors is fixedly connected to a rotating shaft. A worm gear is fixedly connected to the outer side of each of the multiple rotating shafts, and a worm wheel meshes with the outer side of each of the multiple worm gears. The inner side of each of the multiple worm wheels is fixedly connected to the inner side of a corresponding rotating roller.

[0009] Preferably, the top of the workbench is provided with multiple guide grooves, and guide blocks are slidably connected to the inner side of each of the multiple guide grooves, and the tops of the multiple guide blocks are fixedly connected to the bottom of the corresponding movable frame.

[0010] Preferably, a base is fixedly connected to both sides of the workbench, and a controller is fixedly connected to the top of the base near the right side of the workbench. The controller is electrically connected to the motor.

[0011] Preferably, the top of the workbench is fixedly connected to multiple U-shaped frames, the inner sides of the multiple U-shaped frames are rotatably connected to the outer sides of the corresponding rotating shafts, and the top of the workbench is fixedly connected to multiple limiting blocks.

[0012] In this utility model, an automatic fixture for CNC machining is described. By placing the guide rail between two corresponding limit blocks and starting the motor, the rotating shaft begins to rotate, which in turn causes the worm gear to rotate. Since the worm gear meshes with the worm wheel, the worm wheel also begins to rotate. As the worm wheel rotates, the rotating roller begins to rotate, which in turn causes the first connecting rod to rotate. Furthermore, the second connecting rod also begins to rotate, thereby driving the moving bar to begin horizontal movement.

[0013] In this utility model, an automatic fixture for CNC machining is described. When the moving bar begins to approach the guide rail, the abutment block first contacts the guide rail and causes the abutment block to begin to move horizontally in the opposite direction. One end of the abutment block abuts one end of the rotating plate, causing the rotating plate to start rotating. When the moving bar completes its contact with the guide rail, the clamping block at one end of the rotating plate also fully clamps the guide rail. At this time, the user can begin to process the guide rail.

[0014] This utility model has a reasonable structural design. Through the cooperation between the motor, the first connecting rod, the second connecting rod, the rotating bar, the abutment block and the worm gear, the guide rail to be processed can be clamped at multiple positions, thereby improving the stability of the guide rail during processing. Attached Figure Description

[0015] Figure 1 This is a first-view structural schematic diagram of an automatic fixture for CNC machining proposed in this utility model;

[0016] Figure 2 This is a second-view structural schematic diagram of an automatic fixture for CNC machining proposed in this utility model;

[0017] Figure 3 for Figure 2 A magnified view of a portion of the image;

[0018] Figure 4 for Figure 2 Image B shows a magnified view of a portion of the image.

[0019] In the diagram: 1. Workbench; 2. Frame 1; 3. Rotary roller; 4. Link 1; 5. Link 2; 6. Moving frame; 7. Moving bar; 8. Abutment block; 9. Fixed column; 10. Rotating plate; 11. Spring; 12. Motor; 13. Rotating shaft; 14. Worm gear; 15. Worm wheel; 16. U-shaped frame; 17. Controller; 18. Base. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] Reference Figure 1-4 An automatic fixture for CNC machining includes: a worktable 1, a plurality of moving bars 7 slidably connected to the top of the worktable 1, two fixed posts 9 fixedly connected to the top of each of the plurality of moving bars 7, rotating plates 10 rotatably connected to the outer sides of each of the plurality of fixed posts 9, and abutment blocks 8 slidably connected to the inner sides of each of the plurality of moving bars 7, clamping blocks fixedly connected to one end of each of the plurality of rotating plates 10, and two rotating plates 10 located on the same side having one end movably abutting against the same abutment block 8, and springs 11 fixedly connected to the top of each of the plurality of moving bars 7, the other end of each of the plurality of springs 11 fixedly connected to the corresponding abutment block 8, and a fixed cylinder fixedly connected to one side of each of the plurality of abutment blocks 8, with sliding rods slidably connected to the inner sides of each of the plurality of fixed cylinders, and one side of each of the plurality of sliding rods fixedly connected to the top of the corresponding moving bar 7.

[0022] In this embodiment, multiple No. 1 frames 2 are fixedly connected to the top of the workbench 1. A rotating roller 3 is rotatably connected between two No. 1 frames 2 located on the same side. A No. 1 connecting rod 4 is fixedly connected to the outer side of each of the multiple rotating rollers 3. A No. 1 column is rotatably connected to the other end of each of the multiple No. 1 connecting rods 5 are fixedly connected to the outer side of each of the multiple No. 1 columns. A No. 2 column is rotatably connected to the other end of each of the multiple No. 2 connecting rods 5. A movable frame 6 is fixedly connected to the outer side of each of the multiple No. 2 columns. Two movable frames 6 located on the same side are fixedly connected to the outer side of the same movable bar 7. Multiple motors 12 are fixedly connected to the top of the workbench 1. A rotating shaft 13 is fixedly connected to the output end of each of the multiple motors 12. A worm gear 14 is fixedly connected to the outer side of each of the multiple rotating shafts 13. A worm wheel 15 meshes with the outer side of each of the multiple worm gears 14. The inner side of each of the multiple worm wheels 15 is fixedly connected to the inner side of the corresponding rotating roller 3. This allows the rotating roller 3 to rotate, thereby driving other mechanisms to move.

[0023] In this embodiment, the top of the workbench 1 is provided with multiple guide grooves, and guide blocks are slidably connected to the inner side of each guide groove. The top of each guide block is fixedly connected to the bottom of the corresponding movable frame 6. Bases 18 are fixedly connected to both sides of the workbench 1. A controller 17 is fixedly connected to the top of the base 18 near the right side of the workbench 1. The controller 17 is electrically connected to the motor 12. Multiple U-shaped frames 16 are fixedly connected to the top of the workbench 1. The inner side of each U-shaped frame 16 is rotatably connected to the outer side of the corresponding rotating shaft 13. Multiple limiting blocks are fixedly connected to the top of the workbench 1 to facilitate the user to place guide rails for clamping.

[0024] In this embodiment, during use, the guide rail is placed between the two corresponding limit blocks, and the motor 12 is started, causing the rotating shaft 13 to rotate, which in turn causes the worm gear 14 to rotate. Since the worm gear 14 meshes with the worm wheel 15, the worm wheel 15 also starts to rotate. As the worm wheel 15 rotates, the rotating roller 3 starts to rotate, which in turn causes the first connecting rod 4 to rotate. Furthermore, the second connecting rod 5 also starts to rotate, thereby driving the moving bar 7 to start moving horizontally. When the moving bar 7 starts to approach the guide rail, the abutment block 8 first contacts the guide rail and causes the abutment block 8 to start moving horizontally in the opposite direction. One end of the abutment block 8 abuts one end of the rotating plate 10, which causes the rotating plate 10 to start rotating. When the moving bar 7 completes its contact with the guide rail, the clamping block at one end of the rotating plate 10 also fully clamps the guide rail. At this time, the user can start processing the guide rail.

[0025] The above provides a detailed description of an automatic fixture for CNC machining provided by this utility model. Specific embodiments have been used to illustrate the principles and implementation methods of this utility model. The descriptions of these embodiments are merely for the purpose of helping to understand the method and core ideas of this utility model. It should be noted that those skilled in the art can make various improvements and modifications to this utility model without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. An automatic fixture for CNC machining, characterized in that, include: A workbench (1) has multiple moving bars (7) slidably connected to its top. Each of the multiple moving bars (7) has two fixed posts (9) fixedly connected to its top. Each of the multiple fixed posts (9) has a rotating plate (10) rotatably connected to its outer side. Each of the multiple moving bars (7) has a sliding abutment block (8) slidably connected to its inner side. Each of the multiple rotating plates (10) has a clamping block fixedly connected to one end. Two rotating plates (10) located on the same side have one end movably abutting against the same abutment block (8) side. Each of the multiple moving bars (7) has a spring (11) fixedly connected to its top. Each of the multiple springs (11) has the other end fixedly connected to the corresponding abutment block (8) side. Each of the multiple abutment blocks (8) has a fixed cylinder fixedly connected to one side. Each of the multiple fixed cylinders has a sliding rod slidably connected to its inner side. Each of the multiple sliding rods has one side fixedly connected to the top of the corresponding moving bar (7).

2. The automatic fixture for CNC machining according to claim 1, characterized in that, The top of the workbench (1) is fixedly connected to multiple No. 1 frames (2). Two No. 1 frames (2) located on the same side are rotatably connected to the same rotating roller (3). The outer side of each of the multiple rotating rollers (3) is fixedly connected to a No. 1 connecting rod (4). The other end of each of the multiple No. 1 connecting rods (4) is rotatably connected to a No. 1 column. The outer side of each of the multiple No. 1 columns is fixedly connected to a No. 2 connecting rod (5). The other end of each of the multiple No. 2 connecting rods (5) is rotatably connected to a No. 2 column. The outer side of each of the multiple No. 2 columns is fixedly connected to a moving frame (6). Two moving frames (6) located on the same side are fixedly connected to the outer side of the same moving bar (7).

3. The automatic fixture for CNC machining according to claim 1, characterized in that, Multiple motors (12) are fixedly connected to the top of the workbench (1). Each output end of the multiple motors (12) is fixedly connected to a rotating shaft (13). Each rotating shaft (13) is fixedly connected to a worm gear (14) on its outer side. Each worm gear (14) is meshed with a worm wheel (15) on its outer side. Each worm wheel (15) is fixedly connected to the inner side of the corresponding rotating roller (3).

4. The automatic fixture for CNC machining according to claim 1, characterized in that, The workbench (1) has multiple guide grooves on its top, and guide blocks are slidably connected to the inner side of each guide groove. The top of each guide block is fixedly connected to the bottom of the corresponding movable frame (6).

5. An automatic fixture for CNC machining according to claim 1, characterized in that, The workbench (1) is fixedly connected to bases (18) on both sides. A controller (17) is fixedly connected to the top of the base (18) near the right side of the workbench (1). The controller (17) is electrically connected to the motor (12).

6. An automatic fixture for CNC machining according to claim 1, characterized in that, The top of the workbench (1) is fixedly connected to multiple U-shaped frames (16), the inner sides of the multiple U-shaped frames (16) are rotatably connected to the outer side of the corresponding rotating shaft (13), and the top of the workbench (1) is fixedly connected to multiple limiting blocks.

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