A clamping fixture for CNC machine tools

Abstract

This utility model discloses a clamping fixture for CNC machine tools, belonging to the technical field of clamping fixtures. It includes a base with sliding grooves on both sides, a fixed rod connected to the base, and a placement table rotatably mounted on the base via the fixed rod. Fixed holes are provided at the four corners of the base, and a motor is fixedly mounted on one side of the base. During machining, the operator starts the motor, causing it to drive a drive rod to rotate. The threaded engagement between the threaded sleeve and the drive rod, along with the threads on both ends of the drive rod running in the same direction, allows two moving blocks to move in the same direction. As the moving blocks move, the ends of the hinge rods rotate, causing the hinge rod on one moving block to push the placement table, and the hinge rod on the other moving block to pull the placement table. This causes the placement table to rotate via the connecting sleeve on the fixed rod, thereby adjusting the working clamping angle of the placement table and improving practicality and machining efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of clamping fixture technology, specifically a clamping fixture for CNC machine tools. Background Technology

[0002] CNC machine tools are automated machine tools equipped with a program control system. They integrate mechanical, automation, computer, and microelectronic technologies to solve the problem of machining complex, precise, and small-batch parts. They are flexible and efficient automated machine tools with strong adaptability to the workpiece, high machining accuracy, high productivity, high reliability, and improved working conditions.

[0003] Traditional CNC machine tool clamping fixtures typically fix the workpiece at a single angle, and this angle is usually parallel to the working surface of the machine tool table. This results in a limited machining angle for the workpiece, which in turn affects actual use and machining efficiency. Summary of the Invention

[0004] To overcome the above-mentioned defects, this utility model provides a clamping fixture for CNC machine tools, which solves the problem that traditional CNC machine tool clamping fixtures usually fix the workpiece at a single angle, which leads to a limitation on the machining angle of the workpiece, thus affecting the actual use and machining efficiency.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a clamping fixture for CNC machine tools, including a base, with sliding grooves on both sides of the base, a fixed rod connected to the base, a placement table rotatably mounted on the base via the fixed rod, fixed holes at the four corners of the base, a motor fixedly mounted on one side of the base, a drive rod connected to the output shaft of the motor, two moving blocks mounted on the drive rod, and threaded sleeves connected to the moving blocks; A hinge rod is rotatably connected to the movable block via a pin. A connecting sleeve is connected below the placement platform. Guide grooves are provided on both sides of the placement platform. Threaded rods are threadedly connected to both sides of the placement platform. A rotating wheel is connected to one end of the threaded rod, and a movable block is rotatably connected to the other end of the threaded rod. A clamping plate is connected above the movable block.

[0006] As a further embodiment of this utility model: the connecting sleeve is rotatably connected to the fixed rod, and one end of the hinge rod is rotatably connected to the bottom of the placement platform via a pin.

[0007] As a further embodiment of this utility model: a damping rod is rotatably connected above the base, a spring is connected to the damping rod and one end is rotatably connected to the bottom of the placement platform, and a total of four damping rods are evenly arranged in a rectangular array.

[0008] As a further embodiment of this utility model: the drive rod is rotatably connected to the base and located in the slide groove, and both ends of the drive rod are provided with threads in the same direction, and the threaded sleeve is threadedly engaged with the drive rod.

[0009] As a further embodiment of this utility model: the movable block slides in the groove and is in contact with the groove wall, and the hinge rods on the two movable blocks are inclined as a whole and have a mirror symmetrical design.

[0010] As a further embodiment of this utility model: the movable block slides in the guide groove and contacts the groove wall, and the clamping plate is designed in a stepped manner with a rubber pad connected to one side.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This CNC machine tool uses a clamping fixture consisting of a motor, drive rod, moving blocks, threaded sleeve, hinge rod, connecting sleeve, and fixed rod. During machining, the operator starts the motor, causing it to rotate the drive rod. The threaded engagement between the threaded sleeve and the drive rod, along with the threads on both ends of the drive rod running in the same direction, allows the two moving blocks to move in the same direction. As the moving blocks move, the hinge rods rotate, causing the hinge rod on one moving block to push the placement table, while the hinge rod on the other moving block pulls the placement table. This causes the placement table to rotate on the fixed rod via the connecting sleeve, thereby adjusting the working clamping angle of the placement table and improving practicality and machining efficiency.

[0012] This CNC machine tool uses a clamping fixture consisting of a rotating wheel, a threaded rod, a movable block, clamping plates, damping rods, and springs. The operator rotates the rotating wheel to turn the threaded rod, which in turn pushes the movable block to move the clamping plates. This allows the two clamping plates to hold and fix the workpiece. The stepped design of the clamping plates allows the operator to place the workpiece at a lower position on the clamping plates, thus moving the workpiece away from the placement table for processing. When the placement table rotates, it simultaneously drives multiple damping rods to rotate, compressing or stretching the damping rods and springs. This reduces mechanical vibration and provides auxiliary support to the placement table through the damping rods and springs. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 This is a schematic diagram of the cross-sectional structure of the base of this utility model; Figure 3 This is a schematic diagram of the cross-sectional structure of the placement platform of this utility model; Figure 4 This is a schematic diagram of the three-dimensional structure of the clamping plate of this utility model; In the diagram: 1. Base; 2. Slide groove; 3. Fixing rod; 4. Placement platform; 5. Fixing hole; 6. Motor; 7. Drive rod; 8. Moving block; 9. Threaded sleeve; 10. Hinge rod; 11. Connecting sleeve; 12. Guide groove; 13. Threaded rod; 14. Rotary wheel; 15. Moving block; 16. Clamping plate; 17. Damping rod; 18. Spring; 19. Rubber pad. Detailed Implementation

[0014] The technical solution of this patent will be further described in detail below with reference to specific embodiments.

[0015] like Figure 1-4 As shown, this utility model provides a technical solution: a clamping fixture for CNC machine tools, including a base 1, with sliding grooves 2 on both sides of the base 1, a fixing rod 3 connected to the base 1, and a placement table 4 rotatably mounted on the base 1 via the fixing rod 3. A damping rod 17 is rotatably connected above the base 1, and a spring 18 is connected to the damping rod 17, with one end rotatably connected to the bottom of the placement table 4. There are four damping rods 17 evenly arranged in a rectangular array. The multiple damping rods 17 and springs 18 provide auxiliary support for the placement table 4 and reduce mechanical vibration during rotation, thereby improving the stability of the placement table 4 during operation.

[0016] The base 1 has fixing holes 5 at its four corners. A motor 6 is fixedly installed on one side of the base 1. The output shaft of the motor 6 is connected to a drive rod 7. The drive rod 7 is rotatably connected to the base 1 and located in the slide groove 2. The two ends of the drive rod 7 are provided with threads in the same direction. The threaded sleeve 9 is threadedly engaged with the drive rod 7. Through the threads in the same direction at both ends of the drive rod 7 and the threaded connection between the threaded sleeve 9 and the drive rod 7, the two moving blocks 8 can move in the same direction when the drive rod 7 rotates, thereby driving the placement platform 4 to rotate and adjust the working angle.

[0017] Two movable blocks 8 are installed on the drive rod 7. The movable blocks 8 slide in the slide groove 2 and are in contact with the wall of the slide groove 2. The hinge rods 10 on the two movable blocks 8 are inclined as a whole and have a mirror symmetrical design. Through the contact between the movable blocks 8 and the wall of the slide groove 2, the slide groove 2 can guide the movable blocks 8 and prevent the movable blocks 8 from rotating and tilting on the drive rod 7.

[0018] A threaded sleeve 9 is connected to the movable block 8, and a hinge rod 10 is rotatably connected to the movable block 8 via a pin. A connecting sleeve 11 is connected below the placement platform 4, and the connecting sleeve 11 is rotatably connected to the fixed rod 3. One end of the hinge rod 10 is rotatably connected to the bottom of the placement platform 4 via a pin. Through the rotatable connection between the connecting sleeve 11 and the fixed rod 3, the placement platform 4 can rotate with respect to the fixed rod 3, thereby changing the clamping angle to meet actual usage requirements.

[0019] The placement platform 4 has guide grooves 12 on both sides, and threaded rods 13 are threadedly connected to both sides of the placement platform 4. One end of the threaded rod 13 is connected to a rotating wheel 14, and the other end of the threaded rod 13 is rotatably connected to a movable block 15. A clamping plate 16 is connected above the movable block 15. The movable block 15 slides in the guide groove 12 and contacts the groove wall. The clamping plate 16 has a stepped design and a rubber pad 19 is connected to one side. When the clamping plate 16 is in continuous contact with the workpiece, the rubber pad 19 will be squeezed, thereby making the rubber pad 19 fit in close contact with the workpiece and increasing friction, thereby improving the clamping stability of the clamping plate 16.

[0020] The working principle of this utility model is as follows: The operator rotates the threaded rod 13 by turning the rotating wheel 14, which pushes the clamping plate 16 to move. This allows the two clamping plates 16 to hold and fix the workpiece, preventing it from sliding or deviating during processing. The operator can also start the motor 6, which drives the drive rod 7 to rotate. This allows the two moving blocks 8 to move in the same direction as the drive rod 7 through the threaded engagement of the threaded sleeve 9. This causes the hinge rod 10 on one moving block 8 to push the placement table 4, and the hinge rod 10 on the other moving block 8 to pull the placement table 4. As a result, the placement table 4 rotates on the fixed rod 3 through the connecting sleeve 11, changing the working clamping angle of the placement table 4 to meet the actual processing needs.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] The preferred embodiments of this patent have been described in detail above. However, this patent is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this patent.

Claims

1. A clamping fixture for a CNC machine tool, comprising a base (1), characterized in that: The base (1) has sliding grooves (2) on both sides, and a fixing rod (3) is connected to the base (1). The base (1) is rotatably mounted with a placement platform (4) through the fixing rod (3). The base (1) has fixing holes (5) at its four corners. A motor (6) is fixedly mounted on one side of the base (1). The output shaft of the motor (6) is connected to a drive rod (7). Two moving blocks (8) are mounted on the drive rod (7). Threaded sleeves (9) are connected to the moving blocks (8). The movable block (8) is rotatably connected to a hinge rod (10) via a pin shaft. A connecting sleeve (11) is connected below the placement platform (4). Guide grooves (12) are provided on both sides of the placement platform (4). Threaded rods (13) are threadedly connected to both sides of the placement platform (4). A rotating wheel (14) is connected to one end of the threaded rod (13). A movable block (15) is rotatably connected to the other end of the threaded rod (13). A clamping plate (16) is connected above the movable block (15).

2. The clamping fixture for a CNC machine tool according to claim 1, characterized in that: The connecting sleeve (11) is rotatably connected to the fixed rod (3), and one end of the hinge rod (10) is rotatably connected to the bottom of the placement platform (4) via a pin.

3. The clamping fixture for CNC machine tools according to claim 1, characterized in that: A damping rod (17) is rotatably connected above the base (1). A spring (18) is connected to the damping rod (17) and one end is rotatably connected to the bottom of the placement platform (4). There are four damping rods (17) arranged evenly in a rectangular array.

4. The clamping fixture for a CNC machine tool according to claim 1, characterized in that: The drive rod (7) is rotatably connected to the base (1) and located in the slide groove (2). Both ends of the drive rod (7) are provided with threads in the same direction, and the threaded sleeve (9) is threadedly engaged with the drive rod (7).

5. A clamping fixture for a CNC machine tool according to claim 1, characterized in that: The movable block (8) slides in the groove (2) and is in contact with the groove wall of the groove (2), and the hinge rods (10) on the two movable blocks (8) are tilted as a whole and have a mirror symmetrical design.

6. A clamping fixture for a CNC machine tool according to claim 1, characterized in that: The movable block (15) slides in the guide groove (12) and contacts the groove wall. The clamping plate (16) is designed in a stepped manner and has a rubber pad (19) connected to one side.

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