Positioning device for precision copper pipe production and processing

Abstract

The utility model relates to the technical field of copper pipe production and processing, especially to a positioning device for precision copper pipe production and processing, which comprises: a main base provided with clamping stations for accommodating copper pipes; multiple clamping assemblies evenly distributed along the circumference of the main base, each clamping assembly comprising a mounting seat, a driving unit and a clamping block, the driving unit being arranged on the mounting seat and the clamping block being arranged at the output end of the driving unit; a force feedback adjusting assembly comprising a controller and multiple pressure sensors, the pressure sensors being arranged at the contact end of the clamping block and the copper pipe, and the controller being connected with the pressure sensors and the driving unit; and the positioning device is accurate and controllable in clamping and ensures the machining precision.

Description

Technical Field

[0001] This utility model relates to the technical field of copper tube production and processing, and in particular to a positioning device for precision copper tube production and processing. Background Technology

[0002] Copper tubing is a type of tubing made from copper. It possesses excellent electrical and thermal conductivity and corrosion resistance, making it widely used in various fields. Precision copper tubing, as a high-end product, requires an outer diameter tolerance of ≤±0.05mm, a wall thickness tolerance of ≤±8%, and an inner and outer surface roughness Ra≤0.8μm. It is commonly used in the production of high-end equipment such as semiconductor manufacturing equipment and precision aerospace components. During the production and processing of precision copper tubing, positioning and clamping of the tubing is necessary.

[0003] Most existing positioning and clamping devices use springs to provide clamping force. Relying on the elastic deformation capability of the spring, the clamping force is generated by the spring's own deformation when clamping the copper tube, in order to accommodate the dimensional differences of the copper tube within a certain range. However, since the clamping force of the spring is uncontrollable, when the diameter of the copper tube fluctuates, the clamping force generated by the spring will be uneven, resulting in uneven stress distribution on the surface of the copper tube and affecting the processing accuracy. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a positioning device for precision copper tube production and processing that provides precise and controllable clamping and ensures processing accuracy.

[0005] This utility model discloses a positioning device for precision copper tube production and processing, comprising:

[0006] The main base has a clamping station for accommodating copper tubes; multiple clamping assemblies are evenly distributed around the circumference of the main base. Each clamping assembly includes a mounting base, a drive unit, and a clamping block. The drive unit is mounted on the mounting base, and the clamping block is located at the output end of the drive unit.

[0007] The force feedback adjustment component includes a controller and multiple pressure sensors. The pressure sensors are located at the contact end between the clamping block and the copper tube. The controller is connected to the pressure sensors and the drive unit.

[0008] As a preferred embodiment of this utility model, the working surface of the clamping block is a contoured curved surface structure, and the radius of curvature of the curved surface matches the design value of the outer diameter of the copper tube.

[0009] As a preferred embodiment of this utility model, the clamping block includes a rigid base and replaceable wear-resistant contact pieces.

[0010] As a preferred embodiment of this utility model, the driving unit is a servo motor or a piezoelectric ceramic driver, and its output end is directly mechanically driven to the clamping block or indirectly driven through a ball screw pair.

[0011] As a preferred embodiment of this utility model, a buffer damper is connected between the drive unit and the clamping block.

[0012] As a preferred embodiment of this utility model, each clamping assembly further includes a guiding mechanism, which includes a guide rod and a guide block that are slidably engaged. The guide rod is arranged parallel to the corresponding driving unit, and the guide block is connected to the clamping block.

[0013] As a preferred embodiment of this utility model, multiple sets of reference calibration mechanisms are provided on the central axis of the clamping station. Each set of reference calibration mechanisms includes a pneumatic adjusting rod, an adjusting block, and a contact sensor. The adjusting block is located at the output end of the pneumatic adjusting rod, and the contact sensor is located at the contact end between the adjusting block and the copper tube. Both the pneumatic adjusting rod and the contact sensor are electrically connected to the controller.

[0014] As a preferred embodiment of this utility model, the main base includes a fixed base and a movable bracket, and the movable bracket is connected to the base through a height adjustment component.

[0015] Compared with existing technologies, this utility model uses a force feedback adjustment component and a pressure sensor to monitor the pressure between the clamping block and the copper tube in real time, and feeds the data back to the controller. The controller precisely adjusts the drive unit according to preset parameters, so that the clamping force is uniform and controllable, effectively avoiding the problem of uneven surface stress distribution caused by fluctuations in the diameter of the copper tube, thereby improving the processing accuracy. At the same time, the contoured curved surface clamping block and the reference calibration mechanism further optimize the positioning stability, adapt to different tube diameter requirements, and are suitable for high-end manufacturing fields. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the clamping assembly of this utility model;

[0018] Figure 3 This is a schematic diagram of the reference calibration mechanism of this utility model;

[0019] Figure 4 This is a schematic diagram of the control structure of the force feedback adjustment component of this utility model;

[0020] The attached diagram is labeled as follows: 1. Main base; 11. Base; 12. Movable bracket; 13. Height adjustment assembly; 2. Clamping assembly; 21. Mounting seat; 22. Drive unit; 23. Clamping block; 231. Rigid base; 232. Wear-resistant contact plate; 24. Buffer damper; 25. Guide mechanism; 251. Guide rod; 252. Guide block; 3. Force feedback adjustment assembly; 31. Controller; 32. Pressure sensor; 4. Reference calibration mechanism; 41. Pneumatic adjustment rod; 42. Adjustment block; 43. Contact sensor. Detailed Implementation

[0021] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0022] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0023] Reference Figures 1-2This embodiment provides a positioning device for precision copper tube manufacturing, including a main base 1, multiple clamping assemblies 2, and a force feedback adjustment assembly 3. The main base 1 has clamping stations for accommodating copper tubes. The multiple clamping assemblies 2 are evenly distributed circumferentially along the main base 1. Each clamping assembly 2 includes a mounting base 21, a drive unit 22, and a clamping block 23. The drive unit 22 is mounted on the mounting base 21, and the clamping block 23 is located at the output end of the drive unit 22. The force feedback adjustment assembly 3 includes a controller 31 and multiple pressure sensors 32. The pressure sensors 32 are located at the contact end between the clamping block 23 and the copper tube. The controller 31 is connected to the pressure sensors 32 and the drive unit 22. In this embodiment, the force feedback adjustment assembly 3 is used to dynamically control the clamping force of the clamping assemblies 2 on the copper tube. When a precision copper tube needs to be positioned and clamped, the copper tube is first placed in the clamping station on the main base 1. Multiple clamping components 2 then begin operation, and the drive unit 22 is activated, pushing the clamping block 23 closer to the copper tube until it contacts the surface of the tube. At the moment of contact, the pressure sensor 32 located at the contact end between the clamping block 23 and the copper tube begins to function. The pressure sensor 32 senses the pressure applied by the clamping block 23 to the copper tube in real time and converts the pressure signal into an electrical signal, which is then transmitted to the controller 31. This is done via a preset... The output displacement or pressure of the drive unit 22 is dynamically adjusted based on the difference between the clamping force range value of copper tubes with different diameters and the feedback data from the pressure sensor 32. If the controller 31 determines that the current clamping force value is within the standard range, the existing working state of the drive unit 22 is maintained, so that the clamping block 23 maintains the current clamping force. If the clamping force is too large, the pushing force on the clamping block 23 is reduced, so that the clamping force of the clamping block 23 on the copper tube is reduced. If the clamping force is too small, the pushing force on the clamping block 23 is increased to increase the clamping force. Through the above closed-loop feedback adjustment mechanism, a uniform and appropriate clamping force on the copper tube is maintained, avoiding the impact of uneven stress distribution on the surface of the copper tube on the processing accuracy.

[0024] As a preferred embodiment of the above technical solution, refer to Figure 2 The working surface of the clamping block 23 is a contoured curved surface structure, and the radius of curvature of the surface matches the design value of the outer diameter of the copper tube. When the clamping block 23 clamps the copper tube, the contoured curved surface makes surface contact with the surface of the copper tube. Compared with the traditional clamping method of flat plane or non-adaptive curved surface, surface contact makes the clamping force evenly distributed on the outer surface of the copper tube, avoiding damage to the copper tube due to local stress concentration.

[0025] Specifically, refer to Figure 2The clamping block 23 includes a rigid base 231 and a replaceable wear-resistant contact piece 232. The rigid base 231, as the main support structure of the clamping block 23, is made of high-strength alloy material and is installed at the output end of the drive unit 22. It bears the driving force applied by the drive unit 22 and transmits the force to the wear-resistant contact piece 232, thereby achieving clamping of the copper tube. The wear-resistant contact piece 232 is in direct contact with the surface of the copper tube and bears the friction and extrusion between the copper tube and the clamping block 23. It is made of a material with high hardness and good wear resistance. During long-term use, the wear-resistant contact piece 232 will gradually wear due to friction and extrusion with the copper tube. The pressure sensor 32 of the force feedback adjustment component 3 will continuously monitor the clamping force. When an abnormal change in the clamping force of one or more clamping blocks 23 is detected, it may be due to wear of the wear-resistant contact piece 232 leading to a reduction in contact area and uneven pressure. The detachable design makes it easy to replace, thereby reducing maintenance time and cost.

[0026] As a preferred embodiment of the above technical solution, the drive unit 22 is a servo motor or a piezoelectric ceramic driver, and its output end is directly mechanically driven to the clamping block 23 or indirectly driven through a ball screw pair. In this embodiment, the servo motor provides real-time feedback of rotor position and speed information through an encoder. After processing by the servo driver, precise control of the motor speed, torque, and position can be achieved. When direct mechanical transmission is used, the output shaft of the servo motor is directly connected to the clamping block 23, converting the rotational motion of the motor into the linear motion of the clamping block 23. The transmission path is short and the energy loss is low. If indirect transmission is achieved through a ball screw pair, the rotational motion of the motor is efficiently converted into high-precision linear motion through the screw and nut mechanism. The rolling friction characteristics of the ball screw pair make its transmission efficiency high and its motion smooth. Furthermore, pre-tightening can eliminate axial clearance and ensure positioning accuracy. The piezoelectric ceramic actuator is based on the inverse piezoelectric effect. When an electric field is applied, it will produce precise micro-deformation. This deformation can directly drive the clamping block 23 to achieve high-precision displacement. It has a fast response speed and high displacement resolution, which can meet the needs of precision copper tube processing for micro-volume and precise adjustment. Whether it is direct mechanical transmission or indirect transmission through ball screw pair, it can give full play to the high-precision characteristics of the piezoelectric ceramic actuator and achieve precise driving of the clamping block 23.

[0027] To absorb impact loads and prevent sudden changes in clamping force, a buffer damper 24 is connected between the drive unit 22 and the clamping block 23. The buffer damper 24 consists of an elastic element and a damping medium. When the drive unit 22 pushes the clamping block 23 to contact the copper tube, and when instantaneous forces are generated due to equipment vibration, external impact, etc. during the processing, the elastic element first deforms, converting some of the energy into elastic potential energy. Then, the damping medium gradually converts the elastic potential energy into heat energy through friction, fluid flow, etc., and dissipates it, avoiding the impact force from acting directly on the surface of the copper tube, and ensuring that the copper tube is always in a stable clamping state throughout the entire processing process.

[0028] As a preferred embodiment of the above technical solution, each clamping assembly 2 further includes a guiding mechanism 25. The guiding mechanism 25 includes a slidingly engaged guide rod 251 and a guide block 252. The guide rod 251 is arranged parallel to the corresponding drive unit 22, and the guide block 252 is connected to the clamping block 23. Through the precise cooperation of the guide rod 251 and the guide block 252, the movement of the clamping block 23 along the output direction of the drive unit 22 can be accurately guided, preventing the clamping block 23 from swaying or shaking during movement. This ensures that the clamping block 23 can accurately approach or move away from the copper tube along a predetermined straight trajectory, thereby achieving more precise positioning and clamping, improving the accuracy and stability of the clamping operation, effectively preventing unnecessary scratches or damage to the surface of the copper tube caused by the offset of the clamping block 23, and further ensuring the production and processing quality of the copper tube.

[0029] To perform three-dimensional spatial correction of the initial position of the copper tube, multiple sets of reference calibration mechanisms 4 are installed on the central axis of the clamping station; (Refer to...) Figure 3 Each reference calibration mechanism 4 includes a pneumatic adjusting rod 41, an adjusting block 42, and a contact sensor 43. The adjusting block 42 is located at the output end of the pneumatic adjusting rod 41, and the contact sensor 43 is located at the contact end between the adjusting block 42 and the copper tube. Both the pneumatic adjusting rod 41 and the contact sensor 43 are electrically connected to the controller 31. When the reference calibration mechanism 4 is working, the contact sensor 43 senses the contact state between the adjusting block 42 and the surface of the copper tube in real time and feeds the signal back to the controller 31. The controller 31 analyzes and processes the preset copper tube position parameters and the feedback signal. If a deviation in the position of the copper tube is detected, it sends a command to the pneumatic adjusting rod 41. By precisely controlling the extension and retraction of the pneumatic adjusting rod 41, the adjusting block 42 is driven to fine-tune the copper tube, so that it is accurately reset to the preset processing reference position, thereby realizing automatic calibration of the copper tube position and avoiding uneven stress caused by eccentricity during subsequent clamping.

[0030] As a preferred embodiment of the above technical solution, refer to Figure 1The main base 1 adopts a split structure, including a fixed base 11 and a movable bracket 12. The movable bracket 12 is used to directly support the copper tube and the clamping assembly 2, and it is connected to the base 11 through a height adjustment assembly 13. The height adjustment assembly 13 can adjust the height of the movable bracket 12 based on the principles of screw and nut transmission, hydraulic lifting, or electric push rod. When processing precision copper tubes of different specifications or requiring adjustment of processing height, the operator can flexibly change the height of the movable bracket 12 by adjusting the height adjustment assembly 13, thereby adjusting the position of the clamping station to adapt to the installation requirements and processing technology requirements of different processing equipment. This adjustable structure enhances the versatility and flexibility of the device, ensures that the copper tube is in the optimal position during processing, and improves processing accuracy and production efficiency.

[0031] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A positioning device for precision copper pipe production and processing, characterized in that, include: The main base (1) is provided with a clamping station for accommodating copper tubes; Multiple clamping components (2) are evenly distributed around the main base (1). Each clamping component (2) includes a mounting base (21), a driving unit (22), and a clamping block (23). The driving unit (22) is mounted on the mounting base (21), and the clamping block (23) is mounted on the output end of the driving unit (22). The force feedback adjustment component (3) includes a controller (31) and multiple pressure sensors (32). The pressure sensors (32) are located at the contact end between the clamping block (23) and the copper tube. The controller (31) is connected to the pressure sensors (32) and the drive unit (22).

2. The positioning device for precision copper tube production processing according to claim 1, characterized in that, The working surface of the clamping block (23) is a contoured curved surface structure, and the radius of curvature of the curved surface matches the design value of the outer diameter of the copper tube.

3. The positioning device for precision copper tube production processing according to claim 1, characterized in that, The clamping block (23) includes a rigid base (231) and replaceable wear-resistant contact pieces (232).

4. The positioning device for precision copper tube production processing according to claim 1, characterized in that, The drive unit (22) is a servo motor or a piezoelectric ceramic driver, and its output end is directly mechanically driven by the clamping block (23) or indirectly driven by a ball screw pair.

5. The positioning device for precision copper tube production processing according to claim 1, characterized in that, A buffer damper (24) is connected between the drive unit (22) and the clamping block (23).

6. The positioning device for precision copper tube production processing according to claim 1, characterized in that, Each clamping assembly (2) further includes a guide mechanism (25), which includes a guide rod (251) and a guide block (252) that are slidably engaged. The guide rod (251) is arranged parallel to the corresponding drive unit (22), and the guide block (252) is connected to the clamping block (23).

7. The positioning device for precision copper tube production processing according to claim 1, characterized in that, Multiple sets of reference calibration mechanisms (4) are provided on the central axis of the clamping station. Each set of reference calibration mechanisms (4) includes a pneumatic adjusting rod (41), an adjusting block (42), and a contact sensor (43). The adjusting block (42) is located at the output end of the pneumatic adjusting rod (41), and the contact sensor (43) is located at the contact end between the adjusting block (42) and the copper tube. Both the pneumatic adjusting rod (41) and the contact sensor (43) are electrically connected to the controller (31).

8. The positioning device for precision copper tube production and processing as described in claim 1, characterized in that, The main base (1) includes a fixed base (11) and a movable bracket (12), the movable bracket (12) being connected to the base (11) via a height adjustment component (13).

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