A clamping jig for processing the end of a rod-shaped workpiece

Abstract

The utility model discloses a kind of clamping fixtures for stick-shaped workpiece end processing, it includes bottom plate, driven support, cylinder, rotating plate, support block, lower block, reduction gearbox and motor. Bottom plate is basic component, fixedly installs other components;Driven support and reduction gearbox support rotating plate, realize multi-angle overturning;Cylinder drives lower block clamping workpiece;Support block is equipped with bayonet positioning workpiece;Middle unobstructed area is convenient for processing. The utility model solves the problem of unstable positioning, complex operation and limited processing angle by optimizing structure design, improves processing efficiency and flexibility, and is suitable for accurate clamping and multi-angle processing of various stick-shaped workpieces.

Description

Technical Field

[0001] This utility model relates to the field of machining technology, and in particular to a clamping fixture for machining the end of a rod-shaped workpiece. Background Technology

[0002] In the field of machining, end-effector machining of rod-shaped workpieces is a common but technically demanding operation. Traditional clamping fixtures often suffer from problems such as unstable clamping, complex operation, and poor adaptability when fixing rod-shaped workpieces. Especially when multi-angle flipping of the workpiece is required, existing clamping devices struggle to meet the requirements of high precision and high efficiency. Furthermore, existing clamping fixtures are typically designed in a relatively simple way, unable to flexibly adjust to adapt to workpieces of different sizes or shapes, leading to workpiece loosening or positioning deviations during machining, thus affecting machining quality. Simultaneously, traditional fixtures lack design to avoid specific areas of the workpiece during machining, obstructing certain machining areas that need to be exposed, increasing additional operating steps and time costs. Therefore, how to design a clamping fixture that can stably clamp, flexibly flip, and has local avoidance functions has become a pressing technical challenge in the current machining field. This utility model addresses these problems by proposing a clamping fixture for end-effector machining of rod-shaped workpieces, aiming to improve clamping stability, ease of operation, and machining efficiency. Utility Model Content

[0003] The purpose of this invention is to provide a clamping fixture for machining the end of a rod-shaped workpiece, so as to overcome the shortcomings of the prior art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: A clamping fixture for machining the end of a rod-shaped workpiece includes a base plate, a driven bracket, a cylinder, a rotating plate, a support block, a lower pressure block, a gearbox, and a motor. The base plate, as the fundamental component of the entire clamping fixture, is located at the bottom of the device and is used to fix and mount other components. Its rigid structure ensures the overall stability and load-bearing capacity of the device. The driven bracket is fixedly mounted on one side of the base plate and is connected to the rotating plate via bearings. It provides support for the rotating plate's flipping motion and allows the rotating plate to flip at multiple angles relative to the base plate to meet the angle adjustment requirements of the workpiece during machining.

[0005] Furthermore, the cylinders are arranged at equal intervals and fixed to the bottom of the rotating plate. The piston rod of each cylinder passes through the rotating plate and is fixedly connected to the lower pressure block at the top. The cylinders drive the lower pressure block to move up and down through the extension and retraction of the piston rods, thereby achieving the clamping and release of the rod-shaped workpiece. The rotating plate is mounted between the gearbox and the driven support, and its two ends are connected by bearings, allowing it to rotate relative to the base plate. Multiple groups of support blocks are fixedly installed on the top of the rotating plate, and the support blocks are arranged in a straight line at equal intervals. Among them, the middle pair of support blocks are not equipped with cylinders and lower pressure blocks above them, forming an unobstructed area, which facilitates the processing of the end of the workpiece.

[0006] Specifically, the support blocks are fixed to the top of the rotating plate, arranged in pairs, with a piston rod channel for a cylinder between each pair of support blocks. The top of each support block has a downward-recessed latch, the shape and size of which are designed to match the shape of the rod-shaped workpiece, used to place and position the workpiece, ensuring its stability during processing. The pressing block has a T-shaped structure and is fixed to the top of the cylinder piston rod, located between the support blocks. When the cylinder piston rod extends, the pressing block moves downward, pressing the rod-shaped workpiece into the latch on the top of the support block, completing the clamping and fixing.

[0007] Furthermore, the reduction gearbox is fixedly mounted on the base plate, located on one side of the device, and connected to the motor via a transmission mechanism. The reduction gearbox transmits power to the motor through gear transmission or worm gear transmission, controlling the rotation speed and angle of the rotating plate to ensure the smoothness and precision of the processing. The motor is mounted on one side of the reduction gearbox and connected to it via the transmission mechanism, providing power for the rotation of the rotating plate. The motor drives the rotating plate to rotate through the reduction gearbox, bringing the workpiece to the required processing angle.

[0008] Specifically, the rod-shaped workpiece is placed in a slot at the top of the support block and clamped and fixed by the lower pressure block. The end of the workpiece can be placed in the unobstructed area in the middle of the rotating plate to facilitate surface processing. The unobstructed area in the middle of the rotating plate provides sufficient operating space for processing the end of the workpiece by reducing interference from the mechanical structure.

[0009] The technical solution of this utility model achieves its function through the following steps: S1, placing the rod-shaped workpiece in the slot at the top of the support block; S2, starting the cylinder to drive the lower pressing block to move downward, pressing the workpiece into the slot of the support block to complete the clamping and fixing; S3, according to the processing requirements, starting the motor to drive the rotating plate to flip through the reduction gearbox and adjusting the workpiece to the required processing angle; S4, performing surface processing on the end of the workpiece in the unobstructed area in the middle of the rotating plate; S5, after processing is completed, the cylinder drives the lower pressing block to move upward to release the workpiece.

[0010] Furthermore, this invention achieves multi-angle processing capabilities through optimized structural design. Specifically, the cooperation between the motor and the gearbox allows the rotating plate to flip within a preset angle range, the range of which is determined by the gearbox's transmission ratio and the motor's output characteristics. The flipping action of the rotating plate is supported by bearings, ensuring the smoothness of the flipping process. In addition, the piston rod stroke length of the cylinder and the T-shaped structure design of the lower pressure block ensure a uniform distribution of clamping force, preventing workpiece deformation or damage due to excessive local force.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: The above technical solution solves the problem of unstable workpiece positioning during machining in existing technologies. Specifically, the cooperation between the support block's clamping jaws and the lower pressure block effectively restricts workpiece displacement, ensuring workpiece stability during machining. Furthermore, the automatic control of the cylinder enables rapid clamping and release of the workpiece, simplifying the operation process and improving work efficiency. The design of an unobstructed area in the middle of the rotating plate enhances machining efficiency and flexibility, making machining at the end of the workpiece more convenient.

[0012] Furthermore, the technical solution of this utility model has high adaptability in practical applications. For example, by adjusting the size and shape of the support block's jaws, it can accommodate rod-shaped workpieces of different diameters or cross-sectional shapes. In addition, the number and layout of the cylinders can be adjusted according to the length and weight of the workpiece to meet different processing requirements. The rotation angle range of the rotating plate can be adjusted by the transmission ratio of the reduction gearbox, thereby adapting to different processing scenarios.

[0013] In summary, this utility model solves the problems of unstable positioning, complex operation, and limited processing angle in the prior art by optimizing the structural design of the clamping fixture, and realizes precise clamping, multi-angle flipping, and efficient processing of workpieces. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a reference diagram showing the usage state of this utility model.

[0015] Attached image annotations: 1. Driven bracket; 2. Cylinder; 3. Base plate; 4. Rotating plate; 5. Support block; 6. Pressing block; 7. Gearbox; 8. Motor; 9. Rod-shaped workpiece. Detailed Implementation

[0016] The present invention will now be described in detail with reference to the embodiments shown in the accompanying drawings: like Figure 1-2As shown, this embodiment provides a clamping fixture for machining the end of a rod-shaped workpiece. Its specific structure includes a base plate 3, a driven bracket 1, a cylinder 2, a rotating plate 4, a support block 5, a lowering block 6, a reduction gearbox 7, and a motor 8. The base plate 3, as the foundation component of the entire clamping fixture, is located at the bottom of the device and is bolted to the worktable to ensure the stability and load-bearing capacity of the overall device. The driven bracket 1 is fixedly mounted on one side of the base plate 3, and its interior is equipped with bearings to support the flipping action of the rotating plate 4, while also allowing the rotating plate 4 to flip relative to the base plate 3 at multiple angles to meet the angle adjustment requirements of the workpiece during machining.

[0017] The rotating plate 4 is mounted between the gearbox 7 and the driven support 1, with bearings at both ends connecting it to the gearbox 7 and the driven support 1 respectively, allowing it to rotate relative to the base plate 3. Multiple sets of support blocks 5 are fixedly mounted on the top of the rotating plate 4. A piston rod channel for a cylinder 2 is provided between each pair of support blocks 5. The top of the support block 5 has a downwardly recessed bayonet; the shape and size of the bayonet are designed to match the shape of the rod-shaped workpiece 9, used to place and position the workpiece 9, ensuring its stability during processing. The cylinders 2 are arranged at equal intervals and fixed to the bottom of the rotating plate 4. The piston rod of each cylinder 2 passes through the rotating plate 4 and is fixedly connected to the top pressing block 6. The pressing block 6 has a T-shaped structure and is located between the support blocks 5. When the piston rod of the cylinder 2 extends, the pressing block 6 moves downward, pressing the rod-shaped workpiece 9 into the bayonet at the top of the support block 5, completing the clamping and fixing.

[0018] The gearbox 7 is fixedly mounted on the base plate 3, located on one side of the device, and connected to the motor 8 via a transmission mechanism. The gearbox 7 transmits power from the motor 8 through gear transmission or worm gear transmission, controlling the rotation speed and angle of the rotating plate 4 to ensure the smoothness and precision of the machining process. The motor 8, mounted on one side of the gearbox 7, is connected to it via a transmission mechanism, providing power for the rotation of the rotating plate 4. The motor 8 drives the rotating plate 4 to rotate through the gearbox 7, allowing the workpiece to reach the required machining angle. Notably, the pair of support blocks 5 in the middle of the rotating plate 4 are not equipped with cylinders 2 and pressure blocks 6, forming an unobstructed area that facilitates machining of the workpiece end. This unobstructed area in the middle of the rotating plate 4 provides sufficient operating space for machining the workpiece end by reducing interference from the mechanical structure.

[0019] The specific operating principle of this utility model is as follows: S1. The rod-shaped workpiece 9 is placed in the slot at the top of the support block 5, ensuring that the axis of the workpiece is aligned with the slot of the support block 5 to prevent the workpiece from shifting during subsequent processing. S2. The cylinder 2 is activated to drive the lower pressure block 6 to move downwards, pressing the workpiece into the slot of the support block 5 to complete the clamping and fixing. The piston rod stroke length of the cylinder 2 is precisely designed to ensure that the lower pressure block 6 can apply uniform pressure, avoiding workpiece deformation or damage due to excessive local force. S3. According to the processing requirements, the motor 8 is activated to drive the rotating plate 4 to rotate and adjust the workpiece to the required processing angle through the reduction gearbox 7. The output characteristics of the motor 8 and the transmission ratio of the reduction gearbox 7 are matched so that the rotating plate 4 can rotate within a preset angle range. The range of rotation angle can be determined by the transmission ratio of the reduction gearbox 7 and the output characteristics of the motor 8. The rotation action of the rotating plate 4 is supported by bearings to ensure the smoothness of the rotation process. S4. Surface processing is performed on the end of the workpiece in the unobstructed area in the middle of the rotating plate 4. Since the unobstructed area in the middle of the rotating plate 4 reduces the interference of the mechanical structure, the end of the workpiece can be easily ground, cut or processed in other ways. After the S5 machining is completed, cylinder 2 drives the lower pressure block 6 to move upward and release the workpiece. At this time, the worker can easily remove the workpiece and carry out subsequent processing.

[0020] The technical solution of this utility model has high adaptability in practical applications. For example, by adjusting the size and shape of the jaws of the support block 5, it can adapt to rod-shaped workpieces 9 with different diameters or cross-sectional shapes. For workpieces with smaller diameters or lighter weight, the number and layout of cylinders 2 can be reduced, while for workpieces with larger diameters or heavier weight, the clamping force and stability can be improved by increasing the number of cylinders 2 and optimizing the layout. In addition, the rotation angle range of the rotating plate 4 can be adjusted by the transmission ratio of the reduction gearbox 7 to adapt to different processing scenarios. For example, in some processing scenarios that require large-angle rotation, a larger rotation range can be achieved by replacing the reduction gearbox 7 with one with a larger transmission ratio, while in scenarios that require high-precision small-angle rotation, a reduction gearbox 7 with a smaller transmission ratio can be selected to improve the accuracy of angle control.

[0021] This invention also improves the overall performance of the clamping fixture through optimized structural design. For example, the jaw of the support block 5 adopts an arc-shaped design to fit the outer surface of the rod-shaped workpiece 9, reducing the possibility of workpiece slippage during processing. The T-shaped structure design of the lower pressure block 6 not only increases the contact area but also improves the stability of clamping. The piston rod channel of the cylinder 2 is set between the two pairs of support blocks 5 to avoid interference between mechanical structures and ensure that the lower pressure block 6 can accurately act on the center position of the workpiece. The flipping action of the rotating plate 4 is supported by bearings to ensure the smoothness of the flipping process, while reducing frictional loss and extending the service life of the device.

[0022] Most importantly, the purpose of the paired support blocks 5 is to increase the number of workpieces that can be clamped. The lower pressure block 6 has a T-shaped structure because the top faces outwards on both sides. During processing, this invention achieves multi-angle processing capability through the cooperation of motor 8 and reduction gearbox 7, solving the problem of limited processing angle in existing technologies. Motor 8 drives the rotating plate 4 to rotate via reduction gearbox 7, allowing the workpiece to reach the required processing angle. The range of rotation angles can be adjusted according to actual needs; for example, in scenarios requiring complex curved surface processing, continuous multi-angle rotation can be achieved by programming the output of motor 8. Furthermore, the unobstructed area in the middle of the rotating plate 4 greatly facilitates the processing of the workpiece's end, avoiding the operational inconvenience caused by mechanical obstruction in traditional clamping fixtures. In practical applications, operators can flexibly adjust the rotation angle and processing position of the rotating plate 4 according to the workpiece's processing requirements, thereby significantly improving processing efficiency and flexibility.

[0023] This invention also enhances the maintainability and scalability of the device through modular design. For example, the modular design of cylinder 2 and lower pressure block 6 allows for quick disassembly and replacement of components when a cylinder 2 or lower pressure block 6 malfunctions, eliminating the need for extensive repairs to the entire device. Furthermore, the bayonet design of the support block 5 can be customized to meet different workpiece requirements. For instance, a dedicated support block 5 can be designed for workpieces with special cross-sectional shapes to satisfy specific processing needs. This modular design not only reduces maintenance costs but also enhances the device's adaptability, enabling its widespread application in various processing scenarios.

[0024] In summary, this utility model solves the problems of unstable positioning, complex operation, and limited processing angles in the prior art by optimizing the structural design of the clamping fixture, achieving precise workpiece clamping, multi-angle flipping, and efficient processing. The technical solution of this utility model demonstrates excellent performance and wide applicability in practical applications, providing a reliable and efficient solution for the end processing of rod-shaped workpieces 9. The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as the combination of these technical features does not contradict each other, it should be considered within the scope of this specification. For those skilled in the art, several modifications and improvements can be made without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A clamping fixture for machining the end of a rod-shaped workpiece, characterized in that... The device includes a base plate (3), a driven bracket (1), cylinders (2), a rotating plate (4), support blocks (5), a pressing block (6), a gearbox (7), and a motor (8). The base plate (3) is located at the bottom of the device. The driven bracket (1) is fixedly installed on one side of the base plate (3) and connected to the rotating plate (4) through a bearing. The cylinders (2) are arranged at equal intervals and fixed at the bottom of the rotating plate (4). The piston rod of each cylinder (2) passes through the rotating plate (4) and is fixedly connected to the pressing block (6) at the top. The rotating plate (4) is mounted between the gearbox (7) and the driven bracket (1) and connected through a bearing. The support blocks (5) are fixedly installed on the top of the rotating plate (4) and are arranged in a straight line at equal intervals. The middle pair of support blocks (5) are not equipped with cylinders (2) and pressing blocks (6) above them, forming an unobstructed area. The gearbox (7) is fixedly installed on the base plate (3) and connected to the motor (8) through a transmission mechanism. The motor (8) is installed on one side of the gearbox (7).

2. The clamping fixture according to claim 1, characterized in that... The top of the support block (5) is provided with a downwardly recessed slot, the shape and size of which match the shape of the rod-shaped workpiece (9).

3. The clamping fixture according to claim 2, characterized in that... The pressing block (6) has a T-shaped structure and is fixed on the top of the piston rod of the cylinder (2), located between the support blocks (5).

4. The clamping fixture according to claim 1, characterized in that... The gearbox (7) transmits the power of the motor (8) through gear transmission or worm gear transmission to control the rotation speed and angle of the rotating plate (4).

5. The clamping fixture according to claim 4, characterized in that... The range of the rotation angle of the rotating plate (4) is determined by the transmission ratio of the gearbox (7) and the output characteristics of the motor (8).

6. The clamping fixture according to claim 1, characterized in that... The number and layout of the cylinders (2) are adjusted according to the length and weight of the rod-shaped workpiece (9), and the size and shape of the support block (5) are adapted to rod-shaped workpieces (9) with different diameters or cross-sectional shapes.

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