A special-shaped part machining fixing claw disc structure of a numerical control machine tool and a using method thereof

Abstract

The application discloses a special-shaped part machining fixing claw disc structure of a numerical control machine tool and a using method, and relates to the technical field of numerical control machine tools, and specifically discloses a special-shaped part machining fixing claw disc structure of a numerical control machine tool and a using method, which comprises a three-jaw chuck, a mounting block movably and telescopically arranged on a clamping jaw of the three-jaw chuck, a fixing seat fixedly connected to the mounting block, an oval part holder fixedly connected to the fixing seat, a gas pump fixedly arranged in the fixing seat, and a cover slidingly matched with the fixing seat. The three-jaw chuck is provided with the oval part holder, one side of the oval part holder is provided with an arc-shaped end, the arc-shaped end of the oval part holder can be attached to the outer wall of an oval workpiece when the oval workpiece is clamped and machined, the special-shaped part machining fixing claw disc structure of the numerical control machine tool can effectively improve clamping precision, stability and machining efficiency, and can ensure that clamping force is uniformly distributed.

Description

Technical Field

[0001] This invention relates to the field of CNC machine tool technology, specifically to a fixed jaw disc structure and its usage method for machining irregularly shaped parts on a CNC machine tool. Background Technology

[0002] A CNC machine tool is a computer-controlled machine tool capable of precisely performing various complex machining tasks. CNC machine tools are widely used in machinery manufacturing, aerospace, automotive manufacturing, mold making, and other fields. Their basic working principle involves using pre-programmed CNC code to instruct the machine tool to perform automated machining operations. When machining irregularly shaped parts, the fixed jaw (or clamping) structure is a crucial component. Irregularly shaped parts often have complex geometries, and traditional three-jaw chucks may not provide sufficient stability and precision. Therefore, a specialized fixed jaw structure is required to ensure the accuracy and efficiency of part machining.

[0003] CNC machine tools are machine tools controlled by a computer. Their control system can perform automated operation based on digitally input machining instructions. CNC machine tools can be divided into several types, such as: CNC milling machines: used for machining planes and complex curved surfaces, suitable for cutting various materials. CNC lathes: mainly used for turning, suitable for machining rotationally symmetrical parts. CNC machining centers: combine the functions of CNC milling machines and CNC lathes, suitable for multi-axis machining of complex parts. CNC EDM machines: specifically designed for precision EDM, suitable for machining difficult-to-machine hard and brittle materials. With technological advancements, CNC machine tools are gradually developing towards high speed, high precision, and multi-functionality. Intelligentization and automation are important future development trends for CNC machine tools. Combining advanced artificial intelligence and big data technologies, they achieve more efficient and flexible production. CNC machine tools are widely used in multiple industries: Mechanical manufacturing: CNC machine tools are widely used in machining various mechanical parts, such as gears, shafts, and housings, playing an irreplaceable role, especially in mass production. Aerospace: High-precision CNC machine tools can machine aircraft parts, meeting the requirements of aircraft for precision, surface quality, and complex structures. Automotive manufacturing: CNC machine tools are widely used in automotive manufacturing, especially in the precision machining of engine, transmission, and chassis components.

[0004] The applicant discovered a Chinese patent, CN120940687A, entitled "A CNC Machine Tool Device for Facilitating Tool Cutting Angle Change." This patent primarily uses a centering component to replace manual visual alignment for tool positioning. It allows switching between tool positioning states in scenarios such as misaligned tool holders or worn, angled tool mounting, enabling tool mounting at an angle according to actual needs and facilitating cutting angle adjustments. A dust removal component implements a "tool push-in dust removal linkage" mechanism, ensuring a tight fit between the fixing bolt and the tool top during tightening and assisting in tool removal during disassembly, improving ease of use. However, this device uses a three-jaw chuck to clamp and fix the workpiece. For elliptical workpieces, the three jaws may not evenly contact all parts of the workpiece, leading to uneven clamping force and potential workpiece deformation or tilting during clamping, thus affecting machining accuracy. Therefore, we propose a fixed jaw chuck structure and usage method for machining irregularly shaped parts on a CNC machine tool. Summary of the Invention

[0005] The purpose of this invention is to provide a fixed jaw disc structure and its usage method for machining irregularly shaped parts on CNC machine tools.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a fixed jaw chuck structure and method for machining irregularly shaped parts on a CNC machine tool, comprising a three-jaw chuck, wherein an installation block is movably inserted into the jaws of the three-jaw chuck, a fixed seat is fixedly connected to the installation block, an elliptical part holder is fixedly connected to the fixed seat, an air pump is fixedly installed inside the fixed seat, and a cover is slidably fitted inside the fixed seat.

[0007] As a further embodiment of the present invention: the jaws of the three-jaw chuck are threadedly connected with positioning pins.

[0008] As a further embodiment of the present invention: a positioning hole is provided through the mounting block, and the positioning hole is movably connected to the positioning pin.

[0009] As a further embodiment of the present invention: an air inlet is provided on one side of the fixed base.

[0010] As a further aspect of the present invention: an arc-shaped end is provided on one side of the elliptical component holder, and a clamping groove is provided on the elliptical component holder.

[0011] As a further embodiment of the present invention: an air jet pipe is fixedly connected to the output end of the air pump, the other end of the air jet pipe is fixedly connected to the elliptical part holder through the air jet pipe, and a filter screen is fixedly installed on the inner wall of the input end of the air pump.

[0012] As a further embodiment of the present invention: one end of the cover is movably inserted into the inner wall of the air inlet, one end of the cover is slidably in contact with the filter screen, a contact rod is fixedly connected to the top of the cover, the contact rod is slidably engaged with the inner wall of the fixed seat and the elliptical part holder, a spring is fixedly connected to one end of the cover, and the other end of the spring is fixedly connected to the inner wall of the fixed seat.

[0013] This invention also proposes a method for using a fixed jaw disc for machining irregularly shaped parts on a CNC machine tool, comprising the following steps: Step 1: Insert the mounting block into the jaws of the three-jaw chuck to create a tight and seamless fit between the mounting block and the jaws. Step 2: Manually rotate the positioning pin on the three-jaw chuck to make one end of the positioning pin insert into the pre-set positioning hole on the surface of the mounting block, thereby fixing the mounting block on the jaws and preventing the mounting block from shifting during subsequent operations. Step 3: Adjust the multiple jaws of the three-jaw chuck to move radially. Through the linkage of the jaws, the elliptical part holder gradually approaches the elliptical workpiece to be processed until the elliptical part holder is in contact with the surface of the workpiece, ensuring that the workpiece remains stable during the processing. Step 4: Start the air pump that is matched with the fixed claw plate to generate high-pressure air. The high-pressure air flows through the filter screen at the output end of the air pump to filter impurities and dust. The filtered clean air is evenly sprayed onto the surface of the elliptical workpiece through the jet pipe to thoroughly clean the particulate matter on the surface of the workpiece. Step 5: As the elliptical part holder approaches the elliptical workpiece, the contact rod, which moves synchronously with the elliptical part holder, contacts the workpiece surface and is automatically retracted by the reaction force of the workpiece. This retraction action drives the cover to close quickly through the transmission structure, which tightly seals the air inlet of the fixed claw plate to prevent external impurities from entering. Step 6: Keep the cover sealed to ensure that the cutting fluid enters the air pump input smoothly during the processing. After the workpiece is processed, reverse the adjustment of the chuck to disengage the elliptical part holder from the workpiece, and reverse the rotation of the positioning pin to release the mounting block. Remove the processed workpiece and the mounting block to complete the entire usage process.

[0014] As a further aspect of the present invention: when the elliptical part holder is close to the workpiece in step three, its arc-shaped end is fully in contact with the outer wall of the elliptical workpiece, and the clamping groove corresponds to wrapping the edge of the workpiece; the three jaws of the three-jaw chuck move synchronously in the radial direction, so that the clamping force of the three elliptical part holders is evenly applied to the circumferential surface of the workpiece, restricting the displacement of the workpiece in the radial and circumferential directions. The inner wall of the clamping groove fits tightly against the surface of the workpiece, dispersing local clamping pressure and preventing deformation of the workpiece due to pressure concentration.

[0015] As a further aspect of the present invention: in step four, the air outlet of the jet pipe faces the inside of the clamping groove, and high-pressure air is sprayed evenly in a ring along the inner wall of the clamping groove to completely remove the particulate matter attached to the workpiece surface and the inner wall of the clamping groove. In step five, when the contact rod retracts due to the reaction force of the workpiece, it simultaneously drives the baffle to compress the spring. The baffle completely covers the air inlet and fits tightly against the filter screen surface, blocking external impurities from entering the channel. After the workpiece is processed, the elliptical part holder detaches from the workpiece, the spring releases its elastic potential energy to push the baffle to reset, the air inlet reopens, and the contact rod returns to its initial extended state, preparing for the next workpiece cleaning and clamping operation.

[0016] Compared with the prior art, the beneficial effects of the present invention by adopting the above technical solution are as follows: 1. This invention provides an elliptical part holder on the jaws of a three-jaw chuck. The elliptical part holder has an arc-shaped end on one side. When clamping and processing elliptical workpieces, the arc-shaped end of the elliptical part holder can fit against the outer wall of the elliptical workpiece. This allows the fixed jaw structure for machining irregularly shaped parts on CNC machine tools to effectively improve clamping accuracy, stability, and processing efficiency. It not only ensures uniform distribution of clamping force but also simplifies the clamping process and improves production efficiency. It has significant advantages for machining irregularly shaped parts, especially elliptical workpieces. 2. By incorporating an air pump, this invention blows out high-pressure air before the elliptical part holder contacts the elliptical workpiece, cleaning the particles adhering to the surface of the elliptical workpiece. This ensures stability and uniform clamping force during the clamping process, reducing deformation and effectively minimizing the impact of particles on the machining, machine tool, and tools, thereby improving reliability and accuracy in the production process.

[0017] Other advantages, objectives and features of the invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination or study, or may be learned from the practice of the invention. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure in an embodiment of the present invention; Figure 2 This is a partial cross-sectional view of the overall structure in an embodiment of the present invention; Figure 3 This is a schematic diagram showing the unfolded structure of the three-jaw chuck and other components in an embodiment of the present invention; Figure 4 This is a partial cross-sectional view of the structure such as the fixing seat in an embodiment of the present invention; Figure 5 This is a partial cross-sectional view of the elliptical component holder and other parts in an embodiment of the present invention.

[0019] In the diagram: 1. Three-jaw chuck; 2. Mounting block; 3. Fixing base; 4. Oval part holder; 5. Air pump; 6. Cover; 101. Positioning pin; 201. Positioning hole; 301. Air inlet; 401. Clamping groove; 501. Jet pipe; 502. Filter screen; 601. Contact rod; 602. Spring. Detailed Implementation

[0020] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings. It should be noted that the description of these embodiments is for the purpose of helping to understand the present invention, but does not constitute a limitation of the present invention.

[0021] Furthermore, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0022] Please see the appendix Figure 1 -Appendix Figure 5 The present invention discloses a fixed jaw structure for machining irregular parts on a CNC machine tool, comprising a three-jaw chuck 1, wherein an installation block 2 is movably inserted into the jaws of the three-jaw chuck 1, a fixed seat 3 is fixedly connected to the installation block 2, an elliptical part holder 4 is fixedly connected to the fixed seat 3, an air pump 5 is fixedly installed inside the fixed seat 3, and a cover 6 is slidably fitted inside the fixed seat 3.

[0023] The present invention discloses a method for using a fixed jaw disk structure for machining irregularly shaped parts on a CNC machine tool, comprising the following steps: Step 1: Insert the mounting block 2 into the jaws of the three-jaw chuck 1 to create a tight and seamless fit between the mounting block 2 and the jaws. Step 2: Manually rotate the positioning pin 101 on the three-jaw chuck 1 to make one end of the positioning pin 101 insert into the preset positioning hole 201 on the surface of the mounting block 2, thereby fixing the mounting block 2 on the jaws and preventing the mounting block 2 from shifting during subsequent operations. Step 3: Adjust the multiple jaws of the three-jaw chuck 1 to move radially. Through the linkage of the jaws, the elliptical part holder 4 is driven to gradually approach the elliptical workpiece to be processed until the elliptical part holder 4 is in contact with the surface of the workpiece, ensuring that the workpiece remains stable during the processing. Step 4: Start the air pump 5 that is matched with the fixed claw plate to generate high-pressure air. The high-pressure air flows through the filter screen 502 at the output end of the air pump 5 to filter impurities and dust. The filtered clean air is evenly sprayed onto the surface of the elliptical workpiece through the jet pipe 501 to thoroughly clean the particulate matter on the surface of the workpiece. Step 5: As the elliptical part holder 4 approaches the elliptical workpiece, the contact rod 601, which moves synchronously with the elliptical part holder 4, comes into contact with the workpiece surface and is automatically retracted by the reaction force of the workpiece. This retraction action drives the cover 6 to close quickly through the transmission structure, which tightly seals the air inlet 301 of the fixed claw plate to prevent external impurities from entering. Step 6: Keep the cover 6 sealed to ensure that the cutting fluid enters the input end of the air pump 5 smoothly during the processing. After the workpiece is processed, adjust the chuck in the reverse direction to make the elliptical part holder 4 disengage from the workpiece. Rotate the positioning pin 101 in the reverse direction to release the mounting block 2 from the fixation. Remove the processed workpiece and mounting block 2 to complete the entire usage process.

[0024] In embodiment one, the jaws of the three-jaw chuck 1 are threaded with positioning pins 101. A positioning hole 201 is provided through the mounting block 2, and the positioning hole 201 is movably inserted into the positioning pin 101. An air inlet 301 is provided on one side of the fixed base 3. Specifically, the design of the locating pin 101 facilitates the assembly and disassembly of the elliptical workpiece positioning structure. Its unique feature is that one end of the locating pin 101 is designed as a tapered structure. This tapered design not only makes the locating pin 101 easier to insert into the positioning hole 201, but also effectively reduces the frictional resistance during the insertion process, thereby significantly improving the efficiency and convenience of the entire assembly and disassembly process. In addition, the end of the tapered structure can better fit with the inner wall of the positioning hole 201, ensuring the accuracy and stability of the positioning, and further optimizing the positioning effect of the workpiece.

[0025] In embodiment two, an arc-shaped end is provided on one side of the elliptical part holder 4, and a clamping groove 401 is provided on the elliptical part holder 4. An air jet pipe 501 is fixedly connected to the output end of the air pump 5, and the other end of the air jet pipe 501 is fixedly connected to the elliptical part holder 4 through the air. A filter screen 502 is fixedly installed on the inner wall of the input end of the air pump 5. One end of the cover 6 is movably inserted into the inner wall of the air inlet 301, and the other end of the cover 6 is in sliding contact with the filter screen 502. A contact rod 601 is fixedly connected to the top of the cover 6, and the contact rod 601 is slidably engaged with the inner wall of the fixed seat 3 and the elliptical part holder 4 through the air. A spring 602 is fixedly connected to one end of the cover 6, and the other end of the spring 602 is fixedly connected to the inner wall of the fixed seat 3. Specifically, the filter 502 can filter the incoming air, the cover 6 not only achieves self-cleaning of the filter 502, but also automatically seals the air inlet 301 after clamping the workpiece, preventing cutting fluid from entering the input end of the air pump 5 during processing, and the spring 602 enables the cover 6 to open automatically.

[0026] In this invention, when the elliptical part holder 4 approaches the workpiece in step three, its arc-shaped end fully fits the outer wall of the elliptical workpiece, and the clamping groove 401 correspondingly wraps around the edge of the workpiece; the three jaws of the three-jaw chuck 1 move synchronously in the radial direction, so that the clamping force of the three elliptical part holders 4 is evenly applied to the circumferential surface of the workpiece, restricting the displacement of the workpiece in the radial and circumferential directions. The inner wall of the clamping groove 401 fits tightly against the surface of the workpiece, dispersing local clamping pressure and preventing the workpiece from deforming due to pressure concentration.

[0027] In this invention, in step four, the air outlet of the jet pipe 501 faces the inside of the clamping groove 401, and high-pressure air is sprayed evenly in a ring along the inner wall of the clamping groove 401 to completely remove the particulate matter attached to the surface of the workpiece and the inner wall of the clamping groove 401. In step five, when the contact rod 601 retracts due to the reaction force of the workpiece, it simultaneously drives the cover 6 to compress the spring 602. The cover 6 completely covers the air inlet 301 and fits tightly against the surface of the filter screen 502, blocking external impurities from entering the channel. After the workpiece is processed, the elliptical part holder 4 disengages from the workpiece, the spring 602 releases its elastic potential energy to push the cover 6 back to its original position, the air inlet 301 reopens, and the contact rod 601 returns to its initial extended state, preparing for the next workpiece cleaning and clamping operation.

[0028] Working principle: First, insert the mounting block 2 into the jaws of the three-jaw chuck 1, ensuring a tight and seamless fit between the mounting block 2 and the jaws. Next, manually rotate the locating pin 101 so that one end of the locating pin 101 inserts into the locating hole 201, thereby fixing the mounting block 2 and ensuring it will not shift during subsequent operations. Then, by adjusting the movement of multiple jaws, the elliptical part holder 4 can be gradually moved closer to the elliptical workpiece, ensuring the workpiece remains stable during processing. At this point, start the air pump 5 to generate high-pressure air. The high-pressure air is finely filtered through the filter screen 502 to remove impurities and dust. The filtered clean air is then evenly distributed through the jet pipe 501. The fluid is sprayed evenly to thoroughly clean the particulate matter on the surface of the elliptical workpiece, ensuring a clean and dust-free surface and providing a good foundation for subsequent processing. As the elliptical workpiece holder 4 approaches the elliptical workpiece, the contact rod 601 sensitively contacts the workpiece and automatically retracts due to the reaction force of the workpiece. This action causes the cover 6 to close quickly, sealing the air inlet 301 tightly to prevent external impurities from entering. In this way, the cutting fluid can be smoothly introduced into the input end of the air pump 5 during processing, ensuring the normal operation of the entire system. Thus, the entire workflow is successfully completed, and the workpiece is processed in a clean and stable environment.

[0029] The terms "front," "back," "left," "right," "top," and "bottom" all refer to the figures in the accompanying drawings. Figure 1 Based on.

[0030] In the description of this invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this invention.

[0031] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments.

[0032] For those skilled in the art, various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and these variations still fall within the protection scope of the present invention.

Claims

1. A fixed jaw chuck structure for machining irregularly shaped parts on a CNC machine tool, comprising a three-jaw chuck (1), characterized in that: The three-jaw chuck (1) has a mounting block (2) movably inserted into the jaws, a fixed seat (3) fixedly connected to the mounting block (2), an elliptical part chuck seat (4) fixedly connected to the fixed seat (3), an air pump (5) fixedly installed inside the fixed seat (3), and a cover (6) slidably fitted inside the fixed seat (3).

2. The fixed jaw disc structure for machining irregularly shaped parts on a CNC machine tool according to claim 1, characterized in that: The jaws of the three-jaw chuck (1) are threaded with positioning pins (101).

3. The fixed jaw disk structure for machining irregularly shaped parts on a CNC machine tool according to claim 2, characterized in that: The mounting block (2) has a through-hole (201) and the positioning hole (201) is movably connected to the positioning pin (101).

4. The fixed jaw disk structure for machining irregularly shaped parts on a CNC machine tool according to claim 1, characterized in that: An air inlet (301) is provided on one side of the fixed base (3).

5. The fixed jaw disk structure for machining irregularly shaped parts on a CNC machine tool according to claim 1, characterized in that: The elliptical part holder (4) has an arc-shaped end on one side, and a clamping groove (401) is provided on the elliptical part holder (4).

6. The fixed jaw disk structure for machining irregularly shaped parts on a CNC machine tool according to claim 4, characterized in that: The air pump (5) is fixedly connected to the output end with a jet pipe (501), and the other end of the jet pipe (501) is fixedly connected to the elliptical part holder (4). The air pump (5) is fixedly installed on the inner wall of the input end with a filter screen (502).

7. The fixed jaw disk structure for machining irregularly shaped parts on a CNC machine tool according to claim 6, characterized in that: One end of the cover (6) is movably inserted into the inner wall of the air inlet (301), and the other end of the cover (6) is slidably in contact with the filter screen (502). A contact rod (601) is fixedly connected to the top of the cover (6). The contact rod (601) is slidably connected to the inner wall of the fixed seat (3) and the elliptical part holder (4). A spring (602) is fixedly connected to one end of the cover (6), and the other end of the spring (602) is fixedly connected to the inner wall of the fixed seat (3).

8. A method of using a fixed jaw disc for machining irregularly shaped parts on a CNC machine tool as described in any one of claims 1-7, characterized in that, Includes the following steps: Step 1: Insert the mounting block (2) into the jaws of the three-jaw chuck (1) to make the mounting block (2) and the jaws form a tight and seamless fit; Step 2: Manually rotate the positioning pin (101) on the three-jaw chuck (1) to make one end of the positioning pin (101) insert into the pre-set positioning hole (201) on the surface of the mounting block (2), thereby fixing the mounting block (2) on the jaws and preventing the mounting block (2) from shifting during subsequent operations. Step 3: Adjust the multiple jaws of the three-jaw chuck (1) to move radially. Through the linkage of the jaws, the elliptical part holder (4) is driven to gradually approach the elliptical workpiece to be processed until the elliptical part holder (4) is in contact with the surface of the workpiece, so as to ensure that the workpiece remains stable during the processing. Step 4: Start the air pump (5) that is matched with the fixed claw plate to generate high-pressure air. The high-pressure air flows through the filter screen (502) at the output end of the air pump (5) to filter impurities and dust. The filtered clean air is evenly sprayed onto the surface of the elliptical workpiece through the jet pipe (501) to thoroughly clean the particulate matter on the surface of the workpiece. Step 5: As the elliptical part holder (4) approaches the elliptical workpiece, the contact rod (601) that moves synchronously with the elliptical part holder (4) comes into contact with the workpiece surface and is automatically retracted by the reaction force of the workpiece. This retraction action drives the cover (6) to close quickly through the transmission structure, which tightly seals the air inlet (301) of the fixed claw plate to prevent external impurities from entering. Step 6: Keep the cover (6) sealed to ensure that the cutting fluid enters the input end of the air pump (5) smoothly during the processing. After the workpiece is processed, adjust the chuck in the reverse direction to make the elliptical part holder (4) detach from the workpiece. Rotate the positioning pin (101) in the reverse direction to release the mounting block (2) from the fixation. Remove the processed workpiece and the mounting block (2) to complete the entire usage process.

9. The method of using the fixed jaw disc for machining irregularly shaped parts on a CNC machine tool according to claim 8, characterized in that, In step three, when the elliptical part holder (4) is close to the workpiece, its arc end is fully in contact with the outer wall of the elliptical workpiece, and the clamping groove (401) covers the edge of the workpiece. The three jaws of the three-jaw chuck (1) move synchronously in the radial direction, so that the clamping force of the three elliptical part holders (4) is evenly applied to the circumferential surface of the workpiece, limiting the displacement of the workpiece in the radial and circumferential directions. The inner wall of the clamping groove (401) is in close contact with the surface of the workpiece.

10. The method of using the fixed jaw disc for machining irregularly shaped parts on a CNC machine tool according to claim 8, characterized in that, In step four, the air outlet of the jet pipe (501) faces the inside of the clamping groove (401), and the high-pressure air is sprayed evenly in a ring along the inner wall of the clamping groove (401) to completely remove the particles attached to the surface of the workpiece and the inner wall of the clamping groove (401); in step five, when the contact rod (601) is retracted by the reaction force of the workpiece, it simultaneously drives the cover (6) to compress the spring (602), and the cover (6) completely covers the air inlet (301) and is tightly attached to the surface of the filter screen (502) to block external impurities from entering the channel; After the workpiece is processed, the elliptical part holder (4) is removed from the workpiece, the spring (602) releases its elastic potential energy to push the cover (6) to reset, the air inlet (301) reopens, and the contact rod (601) returns to its initial extended state, preparing for the next workpiece cleaning and clamping operation.

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