Automatic clamp of numerical control machine tool

Abstract

The utility model relates to the technical field of clamps, and discloses a numerical control machine tool automatic clamp which comprises a clamp guide rail, a supporting frame is fixedly arranged on one side of the bottom of the clamp guide rail, a third air cylinder is fixed to the supporting frame, a movable frame is fixedly connected to the output end of the third air cylinder, and a push plate is fixedly arranged at the bottom of the movable frame. Clamping pieces are symmetrically arranged on the inner walls of the ends, close to each other, of the push plate and the supporting frame, an auxiliary sliding rail is fixed to the middle of the outer wall of the clamp guide rail, a mounting frame is slidably arranged on the auxiliary sliding rail, and a movable clamping plate is arranged at the bottom of the mounting frame. Through the combined arrangement of the clamp guide rail, the supporting frame, the push plate and the clamping pieces, the clamp guide rail bears the overall gravity of the clamp and the counter-acting force during working, the air cylinder driving component drives the push plate to get close to the supporting frame, and therefore the clamping pieces on the two sides can be pushed to get close to each other, and clamping of the two sides of a workpiece is achieved; and through cooperation of an auxiliary sliding rail, a limiting plate and a movable clamping plate, the device is suitable for workpieces of different specifications and shapes, and high universality and flexibility are achieved.

Description

Technical Field

[0001] The present application relates to the technical field of fixtures, and in particular to an automatic fixture for CNC machine tools. Background Art

[0002] During the CNC machine tool processing, the fixture is a key component to ensure the accurate and stable positioning of the workpiece. Currently, the common CNC machine tool fixtures on the market are mostly manual or semi-automatic, requiring operators to have a certain level of technical skills and operating experience. However, most manual fixtures are bolt-connected structures, which have problems such as cumbersome operation, low efficiency, and unstable positioning accuracy, which to a certain extent affects the processing efficiency and quality of CNC machine tools. In addition, although the existing automatic fixtures can realize automatic positioning and clamping of workpieces, they are often complex in structure, high in manufacturing cost, and difficult to maintain.

[0003] The above information disclosed in the background technology is only used to increase the understanding of the background technology of the present application, and therefore, it may include information that does not constitute the prior art known to ordinary technicians in the field. Utility Model Content

[0004] In order to solve the problems that most manual clamps are bolt-connected structures, which have complicated operations, low efficiency, unstable positioning accuracy, etc., which to a certain extent affect the processing efficiency and processing quality of CNC machine tools. In addition, although the existing automatic clamps can realize automatic positioning and clamping of workpieces, they are often complex in structure, high in manufacturing cost, and difficult to maintain, the present application provides an automatic clamp for CNC machine tools.

[0005] The present application provides an automatic fixture for CNC machine tools that adopts the following technical solution:

[0006] A CNC machine tool automatic fixture comprises a fixture guide rail, a support frame is fixedly provided on one side of the bottom of the fixture guide rail, a cylinder three is fixed on the support frame, a movable frame is fixedly connected to the output end of the cylinder three, a push plate is fixedly provided on the bottom of the movable frame, clamping parts are symmetrically provided on the inner wall of one end of the push plate and the support frame close to each other, an auxiliary slide rail is fixed on the middle part of the outer wall of the fixture guide rail, a mounting frame is slidably provided on the auxiliary slide rail, and a movable clamping plate is provided on the bottom of the mounting frame.

[0007] Preferably, baffles are connected to both sides of the clamp guide rail by screws, a fixing plate is welded to one end of the baffle away from the clamp guide rail, and a plurality of reinforcing rods are welded to the inside of the clamp guide rail at equal intervals.

[0008] Preferably, a sliding block adapted to the fixture guide rail is symmetrically fixed to the top of the movable frame, and an anti-slip pad is bonded to the inner wall of the clamping member.

[0009] Preferably, auxiliary sliding blocks slidably matched with the auxiliary sliding rails are fixed on both sides of the mounting frame, and a second cylinder is fixed on the middle of the inner wall of the mounting frame.

[0010] Preferably, the output end of the cylinder 2 is fixedly connected to the cylinder 1, and a limiting plate is fixed to the outer wall of one side of the cylinder 1.

[0011] Preferably, the output end of the cylinder 1 is fixedly connected to the inner wall of the movable splint, and the movable splint and the inner wall of the bottom end of the limiting plate are both bonded and connected with a fitting block.

[0012] In summary, this application includes the following beneficial technical effects:

[0013] The present application combines the arrangement of a clamp guide rail, a support frame, a push plate and a clamping member. The clamp guide rail bears the overall gravity of the clamp and the reaction force during operation. The push plate is driven by a cylinder drive component to approach the support frame, thereby pushing the clamping members on both sides closer to each other to form a clamp on both sides of the workpiece. The application also combines the arrangement of auxiliary slide rails, limit plates and movable clamps to suit workpieces of different specifications and shapes. The application has strong versatility and flexibility, and the clamping height can be adjusted according to usage requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a front view of an automatic fixture for a CNC machine tool according to an embodiment of the application.

[0015] Figure 2 It is a structural schematic diagram of an automatic fixture for a CNC machine tool according to an embodiment of the application.

[0016] Figure 3 It is a structural schematic diagram of the auxiliary slide rail of the application embodiment.

[0017] Explanation of the accompanying drawings: 1. Clamp guide rail; 2. Baffle; 3. Fixed plate; 4. Reinforcing rod; 5. Auxiliary slide rail; 6. Moving frame; 7. Cylinder one; 8. Mounting frame; 9. Cylinder two; 10. Cylinder three; 11. Support frame; 12. Slider; 13. Push plate; 14. Clamp; 15. Anti-slip pad; 16. Auxiliary slider; 17. Limit plate; 18. Movable splint; 19. Fitting block. DETAILED DESCRIPTION

[0018] The following is combined with Figure 1-3 This application is described in further detail.

[0019] The present application embodiment discloses an automatic fixture for a CNC machine tool. Figure 1-Figure 2, including a fixture guide rail 1, both sides of the fixture guide rail 1 are connected with baffles 2 by screws, a fixing plate 3 is welded at one end of the baffle 2 away from the fixture guide rail 1, and a through hole is opened on the inner wall of the fixing plate 3 to facilitate connection and fixation with a CNC machine tool, a plurality of reinforcing rods 4 are welded at equal intervals inside the fixture guide rail 1 to improve the overall strength, and a support frame 11 is fixedly provided on one side of the bottom of the fixture guide rail 1, a cylinder three 10 is fixed on the top of the inner wall of the support frame 11, a moving frame 6 is fixedly connected to the output end of the cylinder three 10, and a slider 12 adapted to the fixture guide rail 1 is symmetrically fixed on the top of the moving frame 6. When the cylinder three 10 contracts, it will push and pull the moving frame 6. At this time, the slider 12 cooperates with the fixture guide rail 1 to make a linear reciprocating motion.

[0020] A push plate 13 is fixedly provided at the bottom of the movable frame 6, and a clamping member 14 is symmetrically provided on the inner wall of the end where the push plate 13 and the support frame 11 are close to each other, and an anti-slip pad 15 is glued to the inner wall of the clamping member 14 to increase the friction with the workpiece and increase the strength.

[0021] Combination Figure 3 An auxiliary slide rail 5 is fixed to the middle of the outer wall of the fixture guide rail 1, and a mounting frame 8 is slidably provided on the auxiliary slide rail 5. Auxiliary sliders 16 slidably adapted to the auxiliary slide rail 5 are fixed to both sides of the mounting frame 8. The moving distance of the mounting frame 8 on the auxiliary slide rail 5 can be adjusted according to needs, and a cylinder 2 9 is fixed to the middle of the inner wall of the mounting frame 8, and the output end of the cylinder 2 9 is fixedly connected to the cylinder 1 7. The cylinder 1 7 can be pushed downward by the operation of the cylinder 2 9, and a limit plate 17 is fixed to the outer wall of one side of the cylinder 1 7, and a movable clamping plate 18 is provided on the other side;

[0022] The output end of the cylinder 17 is fixedly connected to the inner wall of the movable splint 18, so the movable splint 18 can be pushed closer or farther away, and the inner walls of the movable splint 18 and the bottom ends of the limit plate 17 are both glued and connected with a fitting block 19, through which the workpiece can be further fixed.

[0023] The implementation principle of an automatic clamp for CNC machine tools in an embodiment of the present application is as follows: when in use, the fixed plate 3 is first fixed by bolts, and the clamp guide rail 1 is installed in the CNC machine tool. The movable frame 6 can be pushed and pulled to move back and forth in a straight line by the operation of the cylinder three 10. At this time, the slider 12 slides on the clamp guide rail 1, and then the push plate 13 can be pulled close to the support frame 11, so that the clamping member 14 can clamp the two sides of the workpiece. The anti-slip pad 15 can enhance the anti-slip resistance. The cylinder one 7 can also be driven downward by the operation of the cylinder two 9 to move close to the workpiece. At the same time, the movable clamp 18 is driven by the cylinder one 7 to move close to or away from the limit plate 17, so as to adjust the fixed distance between the two fitting blocks 19. It can be suitable for workpieces of different specifications and shapes, has strong versatility and flexibility, and the clamping height can be adjusted according to usage requirements.

[0024] 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;

[0025] 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;

[0026] 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.

[0027] 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. An automatic fixture for a CNC machine tool, comprising a fixture guide rail (1), characterized in that: A support frame (11) is fixedly provided on one side of the bottom of the clamp guide rail (1), a cylinder three (10) is fixed on the support frame (11), an output end of the cylinder three (10) is fixedly connected to a moving frame (6), a push plate (13) is fixedly provided on the bottom of the moving frame (6), a clamping member (14) is symmetrically provided on the inner wall of one end where the push plate (13) and the support frame (11) are close to each other, an auxiliary slide rail (5) is fixedly provided on the middle part of the outer wall of the clamp guide rail (1), a mounting frame (8) is slidably provided on the auxiliary slide rail (5), and a movable clamping plate (18) is provided on the bottom of the mounting frame (8).

2. The automatic fixture for CNC machine tools according to claim 1, characterized in that: Baffles (2) are connected to both sides of the clamp guide rail (1) by screws, a fixing plate (3) is welded to one end of the baffle plate (2) away from the clamp guide rail (1), and a plurality of reinforcing rods (4) are welded at equal intervals inside the clamp guide rail (1).

3. The automatic fixture for CNC machine tools according to claim 1, characterized in that: A sliding block (12) adapted to the fixture guide rail (1) is symmetrically fixed to the top of the movable frame (6), and an anti-slip pad (15) is bonded to the inner wall of the clamping member (14).

4. The automatic fixture for CNC machine tools according to claim 1, characterized in that: Auxiliary sliding blocks (16) slidably matched with the auxiliary sliding rails (5) are fixed on both sides of the mounting frame (8), and a second cylinder (9) is fixed in the middle of the inner wall of the mounting frame (8).

5. The automatic fixture for CNC machine tools according to claim 4, characterized in that: The output end of the cylinder 2 (9) is fixedly connected to the cylinder 1 (7), and a limiting plate (17) is fixed to the outer wall of one side of the cylinder 1 (7).

6. The automatic fixture for CNC machine tools according to claim 5, characterized in that: The output end of the cylinder 1 (7) is fixedly connected to the inner wall of the movable clamping plate (18), and the inner walls of the bottom ends of the movable clamping plate (18) and the limiting plate (17) are both bonded and connected with a fitting block (19).

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