Multi-station synchronous clamping device for CNC machining

Abstract

This utility model discloses a multi-station synchronous clamping device for CNC machining, including a base. A pusher roller is fixedly connected to the top of the base. A drive motor is installed inside the base. The output shaft of the drive motor is fixedly connected to a threaded rod via a coupling. A limit rail is threadedly connected to the outer wall of the threaded rod. A base is slidably mounted on the top of the limit rail. A clamping assembly is mounted on the top of the base. An angle adjustment assembly is mounted on the top of the clamping assembly. This utility model provides a multi-station synchronous clamping device for CNC machining. By adjusting the steering shaft in conjunction with the pointer on the bushing and the angle scale line on the steering shaft, the rotation angle of the steering clamping block can be precisely controlled to meet the machining requirements of different workpiece angles. It eliminates the need for re-disassembly and clamping, making operation convenient. After adjustment, the adjusting steering shaft can be fixed by locking bolts to ensure the stability of the angle during machining.

Description

Technical Field

[0001] This utility model relates to the field of CNC machining technology, specifically a multi-station synchronous clamping device for CNC machining. Background Technology

[0002] In the utility model patent application CN221159421U, published on June 18, 2024, entitled "A clamping device for CNC multi-station machining", this utility model relates to the field of CNC machining technology, and in particular to a clamping device for CNC multi-station machining. The device includes a frame, a lifting cavity inside the frame, a lifting plate that is lifted and lowered in the lifting cavity, a lifting drive mechanism on the frame for driving the lifting plate to lift and lower, multiple material support arms on the lifting plate, and multiple material passage holes on the top of the frame. The multiple material support arms are respectively arranged in a one-to-one correspondence with the multiple material passage holes. The multiple material passage holes are all connected to the lifting cavity. At least one clamping mechanism is embedded in the inner wall of each material passage hole, and the clamping end of the clamping mechanism can extend into the material passage hole. This application features a compact structure, small footprint, and low cost. It can clamp and process multiple workpieces simultaneously and adjust their height synchronously, greatly improving the efficiency of clamping and adjusting multiple workpieces. Furthermore, the synchronization of the adjustment of multiple workpieces is good, ensuring that the lifting height of multiple workpieces is consistent, thereby improving the quality of the processed workpieces.

[0003] In CNC machining, workpiece clamping is a key factor affecting machining accuracy and efficiency. Traditional CNC machining clamping devices are mostly single-station designs, which can only clamp one workpiece at a time. After machining, the workpiece needs to be disassembled before clamping the next workpiece. This process not only wastes a lot of time and reduces machining efficiency, but also makes it difficult to meet the needs of mass production.

[0004] Meanwhile, in the prior art, including the aforementioned patents, some existing multi-station clamping devices have poor adaptability to workpieces of different specifications and shapes during clamping, insufficient clamping stability, and are prone to workpiece loosening during processing, thus affecting machining accuracy. Moreover, most clamping devices lack angle adjustment functions. When machining workpieces at different angles is required, it is necessary to disassemble and reassemble the clamping device or replace it with a special fixture, which is cumbersome and further reduces machining efficiency. In addition, the movement and positioning accuracy of the clamping device also needs to be improved. Jamming or offset during movement will affect the accuracy of the workpiece's machining position. Therefore, it is necessary to design a CNC machining clamping device that can achieve multi-station synchronous clamping, has good clamping stability and angle adjustment functions, and has precise movement and positioning, so as to improve the efficiency and accuracy of CNC machining. Utility Model Content

[0005] The purpose of this invention is to provide a multi-station synchronous clamping device for CNC machining, so as to solve the problems of low single-station efficiency, poor adaptability, lack of angle adjustment function and insufficient movement positioning accuracy of traditional clamping devices mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a multi-station synchronous clamping device for CNC machining, comprising a base, a pusher roller fixedly connected to the top of the base, a drive motor installed inside the base, a threaded rod fixedly connected to the output shaft of the drive motor via a coupling, a limit slide rail threadedly connected to the outer wall of the threaded rod, a base slidably mounted on the top of the limit slide rail, a clamping assembly mounted on the top of the base, and an angle adjustment assembly mounted on the top of the clamping assembly.

[0007] Furthermore, the clamping assembly includes a limiting slide rod, a double-rail slide, a cylinder, an air port, a clamping arm, and a limiting pad. The limiting slide rod is fixedly installed on the top of the base, and the double-rail slide is installed on the top of the base. A cylinder is installed inside the double-rail slide, and an air port is installed on the outer wall of the cylinder. The output end of the cylinder is fixedly connected to the clamping arm, and a limiting pad is installed at the bottom of the clamping arm.

[0008] Furthermore, the other end of the clamping arm slides along the limiting slide bar, and the top of the double-rail slide is provided with two half-tracks. The clamping surface of the clamping arm is equipped with an anti-slip rubber pad, and the surface of the anti-slip rubber pad is provided with diamond-shaped anti-slip texture. A wear-resistant bushing is installed at the contact position between the clamping arm and the limiting slide bar, and the wear-resistant bushing is made of polytetrafluoroethylene.

[0009] Furthermore, the clamping arm slides inward, and the two sets of cylinders are installed facing each other.

[0010] Furthermore, the angle adjustment assembly includes a connecting block, a bushing, an adjusting steering shaft, and a steering clamp. The connecting block is mounted on the top of the clamping arm, the bushing is mounted on the top of the connecting block, the adjusting steering shaft is mounted inside the bushing, and the steering clamp is mounted on the bushing via the adjusting steering shaft.

[0011] Furthermore, the angle adjustment components are symmetrical about each other along the base, and the rotatable angle of the steering clamp is 180°.

[0012] Furthermore, the outer wall of the bushing is threaded with a locking bolt, one end of which passes through the bushing and abuts against the adjusting steering shaft. The outer wall of the adjusting steering shaft is engraved with angle scale lines, and the surface of the bushing is provided with a pointer.

[0013] Compared with the prior art, the beneficial effects of this utility model are: the multi-station synchronous clamping device for CNC machining is reasonable and has the following advantages:

[0014] (1) This utility model drives the threaded rod to rotate by a drive motor, so that the limit slide rail moves along the threaded rod. At the same time, the base can slide on the top of the limit slide rail, realizing the multi-directional movement adjustment of the clamping device. Combined with the auxiliary role of the push roller, the device moves more smoothly, improving the positioning accuracy of the clamping device and ensuring the accuracy of the workpiece processing position. The angle adjustment component can realize the rotation adjustment of the steering clamp within a range of 180°. By adjusting the steering shaft in conjunction with the pointer on the bushing and the angle scale line on the steering shaft, the rotation angle of the steering clamp can be precisely controlled to meet the processing requirements of different angles of the workpiece. There is no need to disassemble and clamp again, and the operation is convenient. After the adjustment is completed, the adjusting steering shaft can be fixed by the locking bolt to ensure the stability of the angle during the processing.

[0015] (2) In the clamping assembly, two sets of opposing cylinders drive the clamping arms to slide along the double-rail slide and the limiting slide bar, which can flexibly adjust the clamping distance according to the specifications of the workpiece. It is suitable for clamping workpieces of different sizes. The anti-slip rubber pads and diamond anti-slip textures on the clamping surfaces of the clamping arms effectively increase the friction between the clamping arms and the workpiece, improve the clamping stability, and prevent the workpiece from loosening during processing. The wear-resistant bushings made of polytetrafluoroethylene reduce the wear between the clamping arms and the limiting slide bar, and extend the service life of the device. At the same time, multiple bases and corresponding clamping assemblies and angle adjustment assemblies realize multi-station synchronous clamping, which can clamp and process multiple workpieces at the same time, greatly shortening the clamping time, improving CNC machining efficiency, and meeting the needs of mass production. Attached Figure Description

[0016] Figure 1 This is an overall drawing of the present utility model;

[0017] Figure 2 This is a front view of the present utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the limiting slide rail and the base of this utility model;

[0019] Figure 4 This is a schematic diagram of the clamping assembly and angle adjustment assembly of this utility model;

[0020] Figure 5 This is a schematic diagram of the clamping assembly of this utility model.

[0021] In the diagram: 1. Base; 2. Push roller; 3. Drive motor; 4. Threaded rod; 5. Limiting slide rail; 6. Base; 7. Clamping assembly; 701. Limiting slide bar; 702. Double-rail slide; 703. Cylinder; 704. Air port; 705. Clamping arm; 706. Limiting pad; 8. Angle adjustment assembly; 801. Connecting block; 802. Bushing; 803. Adjusting steering shaft; 804. Steering clamp. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-5 The present invention provides a technical solution as follows:

[0024] Example 1:

[0025] A multi-station synchronous clamping device for CNC machining includes a base 1, a pusher roller 2 fixedly connected to the top of the base 1, a drive motor 3 installed inside the base 1, a threaded rod 4 fixedly connected to the output shaft of the drive motor 3 via a coupling, a limit slide rail 5 threadedly connected to the outer wall of the threaded rod 4, a base 6 slidably mounted on the top of the limit slide rail 5, a clamping assembly 7 mounted on the top of the base 6, and an angle adjustment assembly 8 mounted on the top of the clamping assembly 7.

[0026] Furthermore, the clamping assembly 7 internally includes a limit slide rod 701, a double-rail slide block 702, a cylinder 703, an air port 704, a clamping arm 705, and a limit pad 706. The limit slide rod 701 is fixedly installed on the top of the base 6, and the double-rail slide block 702 is installed on the top of the base 6. The cylinder 703 is installed inside the double-rail slide block 702, and the air port 704 is installed on the outer wall of the cylinder 703. The output end of the cylinder 703 is fixedly connected to the clamping arm 705. The bottom is equipped with a limiting pad 706, the other end of the clamping arm 705 slides along the limiting slide bar 701, and the top of the double rail slide 702 is provided with two half rails. The clamping surface of the clamping arm 705 is equipped with an anti-slip rubber pad, the surface of the anti-slip rubber pad is provided with diamond anti-slip texture, and a wear-resistant bushing is installed at the contact position between the clamping arm 705 and the limiting slide bar 701. The wear-resistant bushing is made of polytetrafluoroethylene. The clamping arm 705 slides inward, and two sets of cylinders 703 are installed opposite each other.

[0027] The aforementioned structure incorporates an anti-slip rubber pad mounted on the clamping surface of the clamping arm 705. The anti-slip rubber pad has a diamond-shaped anti-slip texture, effectively increasing the friction between the clamping arm 705 and the workpiece, preventing the workpiece from slipping during processing, and improving clamping stability. A wear-resistant bushing is installed at the contact point between the clamping arm 705 and the limiting slide bar 701. This wear-resistant bushing is made of polytetrafluoroethylene (PTFE), which has excellent wear resistance and lubricity, reducing wear between the clamping arm 705 and the limiting slide bar 701, lowering frictional resistance, making the clamping arm 705 slide more smoothly, and extending the service life of the device.

[0028] Furthermore, the angle adjustment assembly 8 includes a connecting block 801, a bushing 802, an adjusting steering shaft 803, and a steering clamp 804. The connecting block 801 is mounted on the top of the clamping arm 705, and the bushing 802 is mounted on the top of the connecting block 801. The adjusting steering shaft 803 is installed inside the bushing 802, and the steering clamp 804 is mounted on the bushing 802 through the adjusting steering shaft 803. The angle adjustment assembly 8 is symmetrical to each other along the base 6, and the rotatable angle of the steering clamp 804 is 180°. The outer wall of the bushing 802 is threaded with a locking bolt. One end of the locking bolt passes through the bushing 802 and abuts against the adjusting steering shaft 803. An angle scale line is engraved on the outer wall of the adjusting steering shaft 803, and a pointer is provided on the surface of the bushing 802.

[0029] The above structure, by tightening the locking bolts after adjusting the angle of the steering clamp 804, can fix the adjusting steering shaft 803, preventing it from rotating during processing. The outer wall of the adjusting steering shaft 803 is engraved with angle scale lines, and the surface of the bushing 802 is equipped with a pointer. Through the cooperation of the pointer and the angle scale lines, the rotation angle of the steering clamp 804 can be precisely controlled, improving the accuracy of angle adjustment. The bushing 802 is connected to the adjusting steering shaft 803 via the steering clamp 804, and the steering clamp 804 is fixedly connected to the adjusting steering shaft 803. When the adjusting steering shaft 803 rotates, it drives the steering clamp 804 to rotate synchronously. The angle adjustment components 8 are symmetrical along the base 6, and the rotatable angle of the steering clamp 804 is 180°, which can meet the processing requirements of different workpiece angles.

[0030] Working Principle: In operation, firstly, adjust multiple bases 6 to appropriate positions according to the quantity and specifications of the workpieces. Start the drive motor 3, which rotates the threaded rod 4, causing the limiting slide rail 5 to move along the threaded rod 4 to the approximate processing position. Then, push the bases 6, causing them to slide on top of the limiting slide rail 5 for precise positioning. Next, place the workpiece between the two sets of clamping arms 705. Control the cylinder 703 via an external air pump. The output end of the cylinder 703 pushes the clamping arms 705 to slide inwards along the double-rail slide 702 and the limiting slide rail 701 until the anti-slip rubber pads on the clamping arms 705 are in close contact with the workpiece, completing the workpiece clamping. When the workpiece angle needs to be adjusted, loosen the locking bolt on the bushing 802, rotate the adjusting steering shaft 803, and adjust the steering clamp 804 to the required angle according to the pointer on the bushing 802 and the angle scale line on the adjusting steering shaft 803. Then tighten the locking bolt to fix the adjusting steering shaft 803, and multi-angle processing can be performed. After processing is completed, control the cylinder 703 to retract, drive the clamping arm 705 to slide outward, release the workpiece, and complete the disassembly of the workpiece.

[0031] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A multi-station synchronous clamping device for CNC machining, comprising a base (1), characterized in that: A booster roller (2) is fixedly connected to the top of the base (1). A drive motor (3) is installed inside the base (1). A threaded rod (4) is fixedly connected to the output shaft of the drive motor (3) through a coupling. A limit slide rail (5) is threadedly connected to the outer wall of the threaded rod (4). A base (6) is slidably installed on the top of the limit slide rail (5). A clamping assembly (7) is installed on the top of the base (6). An angle adjustment assembly (8) is installed on the top of the clamping assembly (7).

2. The multi-station synchronous clamping device for CNC machining according to claim 1, characterized in that: The clamping assembly (7) includes a limiting slide rod (701), a double-rail slide (702), a cylinder (703), an air port (704), a clamping arm (705), and a limiting pad (706). The limiting slide rod (701) is fixedly installed on the top of the base (6). The double-rail slide (702) is installed on the top of the base (6). The cylinder (703) is installed inside the double-rail slide (702). The air port (704) is installed on the outer wall of the cylinder (703). The clamping arm (705) is fixedly connected to the output end of the cylinder (703). The limiting pad (706) is installed at the bottom of the clamping arm (705).

3. The multi-station synchronous clamping device for CNC machining according to claim 2, characterized in that: The other end of the clamping arm (705) slides along the limiting slide rod (701), and the top of the double-rail slide (702) is provided with two half-tracks. The clamping surface of the clamping arm (705) is equipped with an anti-slip rubber pad, and the surface of the anti-slip rubber pad is provided with diamond-shaped anti-slip texture. A wear-resistant bushing is installed at the contact position between the clamping arm (705) and the limiting slide rod (701), and the wear-resistant bushing is made of polytetrafluoroethylene.

4. The multi-station synchronous clamping device for CNC machining according to claim 2, characterized in that: The clamping arm (705) slides inward, and the two sets of cylinders (703) are installed opposite each other.

5. A multi-station synchronous clamping device for CNC machining according to claim 2, characterized in that: The angle adjustment assembly (8) includes a connecting block (801), a bushing (802), an adjusting steering shaft (803), and a steering clamp (804). The connecting block (801) is mounted on the top of the clamping arm (705), and the bushing (802) is mounted on the top of the connecting block (801). The adjusting steering shaft (803) is mounted inside the bushing (802), and the steering clamp (804) is mounted on the bushing (802) through the adjusting steering shaft (803).

6. A multi-station synchronous clamping device for CNC machining according to claim 5, characterized in that: The angle adjustment components (8) are symmetrical about each other along the base (6), and the rotatable angle of the steering clamp (804) is 180°.

7. A multi-station synchronous clamping device for CNC machining according to claim 5, characterized in that: The outer wall of the bushing (802) is threaded with a locking bolt. One end of the locking bolt passes through the bushing (802) and is in close contact with the adjusting steering shaft (803). An angle scale line is engraved on the outer wall of the adjusting steering shaft (803). A pointer is provided on the surface of the bushing (802).

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