Cleaning device for workpiece before clamping and workpiece clamping device

Abstract

The utility model discloses a kind of cleaning device and workpiece clamping device before workpiece clamping, cleaning device, including the clamping assembly for clamping workpiece free end, and the moving assembly of clamping assembly opposite setting along the axial direction of workpiece, moving assembly includes the moving module that can move along the axial direction of workpiece, gas pump is equipped on moving module, gas pump is connected with blowpipe by swivel joint, blowpipe is coaxially arranged with workpiece, the free end of blowpipe is communicated with the blow head that is eccentric with it, blowpipe is connected with the first driving portion of driving its rotation on it. The cleaning device can automatically clean the outer surface of workpiece clamping end and the clamping surface of clamp before clamping. Workpiece clamping device includes the cleaning device, can avoid the clamping precision of workpiece to be influenced by adhering scrap on workpiece and clamp, improves the precision of clamping operation.

Description

Technical Field

[0001] This utility model relates to the field of machining equipment technology, and in particular to a cleaning device for workpiece clamping and a workpiece clamping device. Background Technology

[0002] In the field of machining, especially in turning or milling processes, the clamping accuracy of the workpiece directly affects the machining quality.

[0003] In traditional machining processes, although fixtures can achieve rapid positioning and stable clamping of workpieces, they have obvious defects in actual production: the metal chips and dust generated during machining are easy to adhere to the workpiece surface and the clamping surface of the fixture. These residues can cause inaccurate positioning when the workpiece is clamped again, thus affecting the machining accuracy. Especially in batch processing, chips will continuously accumulate on the surface of the fixture during continuous operation.

[0004] Existing fixture devices generally lack integrated cleaning functions. Traditional cleaning methods require manual cleaning after machine shutdown. Operators typically use temporary cleaning methods such as compressed air blowing or manual wiping. These methods not only affect production efficiency but also pose safety hazards. In addition, traditional cleaning methods are difficult to completely remove residues inside the fixture and on the workpiece contact surfaces. The cleaning effect is unstable and easily leaves behind tiny particles, a problem that is particularly prominent in precision machining.

[0005] In view of the problems of incomplete cleaning of workpieces before clamping and low cleaning efficiency in existing technologies, there is an urgent need to develop an integrated and automated cleaning device. Utility Model Content

[0006] The technical problem to be solved by this utility model is to provide a cleaning device and a workpiece clamping device for workpiece clamping before cleaning, which can improve the cleaning efficiency of workpieces and fixtures, realize automated cleaning, and reduce downtime during processing.

[0007] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0008] A cleaning device for workpieces before clamping includes:

[0009] Clamping assembly for clamping the free end of a workpiece;

[0010] A movable assembly, disposed opposite to a clamping assembly along the workpiece's axial direction, the movable assembly including a movable module capable of moving along the workpiece's axial direction; and

[0011] The purging assembly includes an air pump fixed on a movable module, a purging pipe connected to the air pump via a rotary joint, the purging pipe being coaxially arranged with the workpiece, the free end of the purging pipe being connected to a purging head eccentrically arranged therewith, and a first driving part connected to the purging pipe to drive its rotation.

[0012] A further technical solution is that the clamping assembly includes:

[0013] Two clamping arms are positioned radially and horizontally on both sides of the workpiece. Clamping blocks for holding the workpiece are fixed to the upper ends of the two clamping arms, and the two clamping blocks are mirror-oriented.

[0014] The second drive unit, connected to the lower end of the clamping arm, is used to drive the two clamping arms to move closer or further apart, and can lock the two clamping arms.

[0015] A further technical solution is that the second driving unit includes:

[0016] Fixed support;

[0017] A double-ended screw is arranged horizontally along the radial direction of the workpiece. The two ends of the double-ended screw are rotatably fixed to a fixed support. The two ends of the double-ended screw have threads with opposite helical directions.

[0018] Drive component, used to drive the double-ended screw to rotate; and

[0019] Two screw sleeves are threadedly connected to both ends of the double-ended screw, respectively;

[0020] The lower end of the clamping arm is fixed to the corresponding screw sleeve.

[0021] A further technical solution is that the first driving unit includes:

[0022] Driven gear, fixed to the outer wall of purge pipe; and

[0023] The first motor is fixed on the moving module, and a driving gear that meshes with the driven gear is fixed on the output shaft of the first motor.

[0024] A further technical solution is that a brush head is fixed to the free end of the purge tube and is eccentrically positioned therewith.

[0025] A further technical solution is that the brush head has two brush surfaces, which are distributed relatively to each other along the radial direction of the workpiece.

[0026] A further technical solution is that an electromagnet is fixed to the free end of the purge tube and is eccentrically arranged therewith. The length direction of the electromagnet is arranged along the axial direction of the purge tube, and the electromagnet is connected to a power supply component.

[0027] A further technical solution is that the power supply component controls the electromagnet to be energized or de-energized through the terminal block assembly;

[0028] The terminal block assembly includes:

[0029] A fixed terminal block, fixed to the movable module, is arc-shaped and surrounds the outside of the purge pipe, concentrically arranged with the purge pipe; and

[0030] The rotating terminal block has one end insulatedly fixed to the outer wall of the purge tube, and the other end can contact the fixed terminal block to form a conductive circuit between the power supply component and the electromagnet.

[0031] A further technical solution is that when the fixed terminal and the rotary terminal are not in contact, the vertical plane where the electromagnet is located does not intersect with the workpiece downwards.

[0032] A workpiece clamping device includes a worktable and a chuck mechanism provided on the worktable, characterized in that the workpiece clamping device includes the cleaning device described in any one of the above claims;

[0033] The chuck mechanism is located between the clamping component and the moving component;

[0034] The moving component can drive the purging component into the chuck mechanism.

[0035] The beneficial effects of adopting the above technical solution are as follows:

[0036] The eccentrically positioned blowing head in this cleaning device, driven by the blowing tube, can rotate and blow around the outer surface of the workpiece clamping end and the clamping surface (inner surface) of the fixture. The blowing head can complete the comprehensive cleaning of the workpiece and the fixture in a single stroke, resulting in high cleaning efficiency. The cleaning effect is further improved by the multiple rotations of the blowing head.

[0037] The purging component in this cleaning device, through the combined action of axial movement and rotation, achieves automated cleaning of the outer surface of the workpiece clamping end and the clamping surface of the fixture before clamping. This avoids the impact of debris adhering to the workpiece and fixture on the clamping accuracy, improves the accuracy of clamping operations, achieves automated cleaning, and reduces downtime during processing. Attached Figure Description

[0038] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0039] Figure 1 This is a schematic diagram of the isometric structure of this utility model;

[0040] Figure 2This is a schematic diagram of the structure of the connection between the moving component and the purging component in this utility model;

[0041] Figure 3 This is another isometric structural schematic diagram of this utility model;

[0042] Figure 4 yes Figure 3 A magnified structural diagram of part A in the middle;

[0043] Figure 5 This is a schematic diagram of the purge tube portion of this utility model;

[0044] Figure 6 This is a schematic diagram of the terminal block assembly in this utility model;

[0045] Figure 7 This is a schematic diagram of the circuit structure connecting the power supply component, electromagnet, and terminal block assembly in this utility model. Detailed Implementation

[0046] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Many specific details are set forth in the following description 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.

[0047] In the description of this utility model, unless otherwise stated, the terms "upper", "lower", "left", "right", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing this utility model 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, and therefore should not be construed as a limitation of this utility model.

[0048] Example 1:

[0049] like Figures 1 to 7 As shown, the cleaning device for pre-clamping of workpieces mainly cleans the clamping end and the fixture (jaw 7) of the shaft workpiece 18. The cleaning device includes a clamping assembly, a moving assembly, and a blowing assembly.

[0050] The clamping assembly is a device that fixes one end of the workpiece 18 (shaft type) by mechanical clamping. The clamping assembly is used to clamp the free end of the workpiece 18 (the free end refers to the end of the workpiece 18 that is freely set during processing), and its purpose is to fix the workpiece 18 horizontally during cleaning. The moving assembly and the clamping assembly are arranged opposite to each other along the axial direction of the workpiece 18. The moving assembly is a transmission mechanism that moves along the axial direction of the workpiece 18. The moving assembly includes a moving module 9 that can move along the axial direction of the workpiece 18. Specifically, the moving assembly can use a combination of linear guide rail and servo motor in the prior art to drive the moving module 9, which will not be described in detail here. The moving module 9 carries the blowing assembly to complete the axial displacement. The blowing assembly includes an air pump 10 fixed on the moving module 9. The air pump 10 is connected to a blowing pipe 12 through a rotary joint 11. The blowing pipe 12 is arranged coaxially with the workpiece 18. The free end of the blowing pipe 12 is closed and connected to a blowing head 15 that is eccentrically arranged with it. A first driving part that drives the blowing pipe 12 to rotate is connected to the blowing pipe 12.

[0051] Before the workpiece 18 is clamped onto the machine tool, the free end of the workpiece 18 is fixed by the clamping assembly on the cleaning device. The moving assembly drives the moving module 9 to advance along the axis of the workpiece 18, pushing the blowing head 15 forward to the appropriate position. Then, the air pump 10 is started, and the air pump 10 provides high-pressure blowing gas into the blowing pipe 12. The high-pressure airflow is delivered to the blowing head 15 through the blowing pipe 12. At the same time, the first drive unit drives the blowing pipe 12 to rotate. The rotary joint 11 ensures that the air passage of the blowing pipe 12 remains open during rotation. The blowing trajectory of the blowing head 15 forms an annular covering area with a diameter larger than that of the body of the blowing pipe 12. The blowing head 15 performs a rotary cleaning along the outer wall of the workpiece 18 and the inner wall of the fixture while rotating, which can effectively remove the attached debris.

[0052] The blowing head 15 has a blowing port, which can be a flared mouth. The blowing head 15 is brought close to the fixed end of the workpiece 18 by the moving component (the blowing head 15 and the fixed end of the workpiece 18 have a certain axial distance). The blowing head 15 blows along the axial direction of the workpiece 18, and the high-pressure gas can diffuse radially to the outer surface of the workpiece 18 and the inner surface of the fixture, thereby simultaneously completing the blowing of the outer surface of the workpiece 18 mounting end and the clamping surface (inner surface) of the fixture.

[0053] The blowing port can also blow along the radial direction of the workpiece 18. The blowing head 15 is moved into the fixture using a moving component, with the blowing head 15 located radially outward from the fixed end of the workpiece 18. The blowing head 15 has two blowing ports in different directions, arranged radially opposite each other along the workpiece 18. One blowing port blows towards the outer surface of the workpiece 18, and the other blows towards the inner surface of the fixture, thus simultaneously blowing both the outer surface of the workpiece 18's clamping end and the clamping surface (inner surface) of the fixture. Multiple of each type of blowing port can be provided, and these ports are spaced apart along the axial direction of the workpiece 18.

[0054] In the purging assembly, multiple purging heads 15 can be provided, and the multiple purging heads 15 are evenly arranged circumferentially along the purging pipe 12.

[0055] After the purging is completed, the air pump 10 and the first drive unit are turned off, the moving component drives the moving module 9 to move backward and reset, the purging head 15 moves away from the workpiece 18 and back outside the fixture, then the workpiece 18 is removed from the clamping component, and finally the workpiece 18 is clamped onto the machine tool fixture according to the normal processing procedure.

[0056] The eccentrically positioned blowing head 15 in the cleaning device, driven by the blowing pipe 12, can rotate and blow around the outer surface of the workpiece 18 mounting end and the clamping surface (inner surface) of the fixture. The blowing head 15 can complete the comprehensive cleaning of the workpiece 18 and the fixture in a single stroke, resulting in high cleaning efficiency. The cleaning effect is further improved by the multiple rotations of the blowing head 15.

[0057] The purging component in this cleaning device, through the combined action of axial movement and rotation, enables automated cleaning of the outer surface of the workpiece 18 clamping end and the clamping surface of the fixture before clamping. This avoids the impact of debris adhering to the workpiece 18 and the fixture on the clamping accuracy of the workpiece 18, improves the accuracy of the clamping operation, achieves automated cleaning, and reduces downtime during processing.

[0058] Example 2:

[0059] like Figure 3 As shown, the clamping assembly includes two clamping arms 6 and a second drive unit. The two clamping arms 6 are distributed on both radially and horizontally opposite sides of the workpiece 18. The clamping arms 6 are L-shaped, with their upper ends arranged radially along the workpiece. Clamping blocks 17 for clamping the workpiece 18 are fixed to the upper ends of the two clamping arms 6, and the two clamping blocks 17 are arranged mirror images of each other. The second drive unit is connected to the lower ends of the clamping arms 6 and is used to drive the two clamping arms 6 to move closer or further apart, and can lock the two clamping arms 6.

[0060] The two clamping arms 6 are rigid support structures distributed on both radial sides of the workpiece 18. The clamping block 17 is a clamping component that directly contacts the surface of the workpiece 18. Specifically, it can be a hard alloy block with anti-slip texture. The two clamping blocks 17 are mirrored and symmetrically subjected to force. The surface of the clamping block 17 that contacts the workpiece 18 is adapted to the shape of the workpiece 18, preferably an arc-shaped concave surface.

[0061] The second drive unit is a power mechanism that controls the movement of the clamping arms 6. By driving the two clamping arms 6 to move synchronously, it ensures that the clamping force of the two clamping blocks 17 on the workpiece 18 is applied evenly, guaranteeing stable clamping of the workpiece 18. When the workpiece 18 is placed in the clamping area, the second drive unit drives the two clamping arms 6 to move closer to each other radially, so that the two clamping blocks 17 simultaneously contact the surface of the workpiece 18. The two clamping blocks 17 are mirror-shaped, which can adapt to the clamping of shaft-type workpieces 18. During the clamping process, the second drive unit continuously applies driving force until the two clamping blocks 17 stably clamp the workpiece 18, and then stops driving the displacement of the clamping arms 6, keeping the position of the clamping arms 6 fixed and locking the clamping arms 6. This structure, through symmetrical clamping, can eliminate the problem of workpiece 18 displacement caused by unilateral force application.

[0062] like Figure 3 As shown, the second drive unit includes a fixed support 21, a double-ended screw 4, a drive component, and two screw sleeves. The double-ended screw 4 is arranged horizontally along the radial direction of the workpiece 18. The two ends of the double-ended screw 4 are rotatably fixed to the fixed support 21 by bearings. The two ends of the double-ended screw 4 have threads with opposite helical directions. The drive component is used to drive the double-ended screw 4 to rotate. The two screw sleeves are respectively threaded to the two ends of the double-ended screw 4. The lower end of the clamping arm 6 is fixed to the corresponding screw sleeve.

[0063] The driving component can be a second motor connected to one end of the double-ended screw 4. Starting the second motor drives the double-ended screw 4 to rotate forward or backward, converting the rotational motion into linear displacement of the screw sleeves. Since the threads at both ends of the double-ended screw 4 rotate in opposite directions, when the double-ended screw 4 rotates, it drives the two screw sleeves to move closer or further apart along the double-ended screw 4, thereby clamping and releasing the workpiece 18. When the second motor stops, maintaining the stability of the double-ended screw 4 ensures the locking of the two clamping arms 6.

[0064] The second drive unit adopts bidirectional synchronous drive to achieve precise synchronous movement of the two clamping arms 6, which can avoid the tilting of the workpiece 18 caused by unilateral pressure, improve the stability of the clamping assembly in clamping the workpiece 18, and provide a reliable positioning reference for subsequent purging operations.

[0065] Example 3:

[0066] like Figure 2 As shown, the first drive unit includes a driven gear 13 and a first motor 14. The driven gear 13 is fixed on the outer wall of the purge pipe 12, and the first motor 14 is fixed on the moving module 9. A drive gear that meshes with the driven gear 13 is fixed on the output shaft of the first motor 14.

[0067] When the first motor 14 starts, its output shaft drives the driving gear to rotate, which in turn drives the driven gear 13 to rotate through the meshing of the gears. Since the driven gear 13 is rigidly connected to the blowpipe 12, the blowpipe 12 rotates around its own axis, driving the blowpipe head 15 to perform a circumferential cleaning action. During this process, the rigid contact characteristics of the gear transmission prevent transmission slippage and ensure the stability of the cleaning action.

[0068] Example 4:

[0069] The cleaning device in the above embodiments relies solely on airflow for cleaning, which is insufficient to thoroughly remove stubborn deposits or oil stains. Therefore, in this embodiment, a brush head 16 is fixed to the free end of the blowing pipe 12, which is eccentrically positioned thereto. Multiple brush heads 16 can be provided, and the multiple brush heads 16 are evenly arranged circumferentially along the blowing pipe 12.

[0070] Each brush head 16 has two brush surfaces, which are distributed radially opposite to each other along the workpiece 18. The brush surfaces are cleaning structures that directly contact the outer surface of the workpiece 18 and the inner surface of the fixture, and can be formed by densely arranging nylon bristles or metal filaments.

[0071] During cleaning, the moving component moves the brush head 16 into the fixture, with the brush head 16 positioned radially outside the fixed end of the workpiece 18. During cleaning, the first drive unit rotates the blowpipe 12, and the cleaning trajectory of the brush head 16 forms an annular coverage area with a diameter larger than the body of the blowpipe 12. While rotating, the brush head 16 performs a rotary contact cleaning along the outer wall of the workpiece 18 and the inner wall of the fixture. Through friction, the brush head 16 simultaneously removes deposits from the outer surface of the workpiece 18 and the inner surface of the fixture.

[0072] This cleaning device, through airflow blowing combined with mechanical scraping of the brush head 16, can significantly improve the cleaning effect, effectively remove residual metal shavings or oil stains from turning or milling, and avoid positioning deviations caused by surface impurities when the workpiece 18 is clamped. At the same time, through the dual action of mechanical and airflow, it reduces cleaning dead corners and improves clamping accuracy and processing quality.

[0073] Example 5:

[0074] An electromagnet 22 is fixed to the free end of the purge tube 12, eccentrically positioned thereon. The electromagnet 22 has a long strip structure, and its length is arranged along the axial direction of the purge tube 12. The electromagnet 22 is connected to a power supply component. Multiple electromagnets 22 can be provided, and the multiple electromagnets 22 are evenly arranged circumferentially along the purge tube 12.

[0075] Electromagnet 22 is a magnetic component offset from the axis of the blow tube 12, used to adsorb iron filings or metal debris remaining on the surface of the workpiece 18 during the blowing process. Electromagnet 22 can be positioned circumferentially close to the blow head 15 and brush head 16. The power supply component refers to the device that provides electrical energy to electromagnet 22, used to power the coil of electromagnet 22. By controlling the energization or de-energization of the coil of electromagnet 22, the switching between the magnetic and non-magnetic states of electromagnet 22 can be achieved.

[0076] During cleaning, the electromagnet 22 is moved into the fixture using a moving component, with the electromagnet 22 positioned radially outside the fixed end of the workpiece 18. As the purge pipe 12 rotates, it causes the electromagnet 22 to rotate around the outer surface of the workpiece 18 and the inner surface of the fixture. When energized, the electromagnet 22 generates a magnetic field that attracts iron filings from the outer surface of the workpiece 18 and the inner surface of the fixture. The eccentric arrangement creates a gap between the electromagnet 22 and the surface of the workpiece 18, preventing contact and wear. By actively attracting iron filings with the electromagnet 22, the problem of workpiece 18 clamping deviation caused by iron filings is solved, while also preventing secondary iron filings from scattering and contaminating the processing environment.

[0077] By removing non-magnetic impurities through purging airflow and combining this with electromagnetic adsorption of magnetic impurities, the accuracy of clamping and positioning the workpiece 18 is further improved. At the same time, the frequency of manual cleaning during downtime is reduced, ensuring the continuity of processing.

[0078] Example 6:

[0079] The power supply component includes a power source and wires. The electromagnet 22 is connected to the power source through the wires. A terminal assembly is provided on the wires. The terminal assembly is equivalent to a circuit switch. The electromagnet 22 is energized or de-energized through the terminal assembly. The terminal assembly includes a fixed terminal 23 and a rotating terminal 24.

[0080] like Figure 7 As shown, when there is only one electromagnet 22, the power supply, fixed terminal 23, rotary terminal 24 and electromagnet 22 form a series circuit through wires; when there are multiple electromagnets 22, the multiple electromagnets 22 are connected in parallel and then in series in the circuit.

[0081] like Figure 5 and Figure 6 As shown, the fixed terminal 23 is fixed to the movable module 9. The fixed terminal 23 is arc-shaped and surrounds the outside of the purge tube 12, concentrically arranged with the purge tube 12. One end of the rotating terminal 24 is insulatedly fixed to the outer wall of the purge tube 12, and the other end can contact the fixed terminal 23 to form a conductive circuit between the power supply component and the electromagnet 22. The purge tube 12 is made of plastic, which is non-conductive, so the rotating terminal 24 can be directly fixed to the purge tube 12.

[0082] When the purge tube 12 drives the electromagnet 22 to rotate, the rotating terminal 24 rotates synchronously with the purge tube 12. Its end maintains sliding contact with the arc-shaped surface of the fixed terminal 23, ensuring continuous circuit conduction. The electromagnet 22 is continuously energized, generating magnetic force to attract iron filings. When the purge tube 12 rotates a certain angle, the rotating terminal 24 disengages from the fixed terminal 23, the circuit is broken, the electromagnet 22 is de-energized, and the iron filings attracted to the electromagnet 22 fall downwards, preventing excessive iron filings from adhering to the electromagnet 22 and affecting subsequent adsorption effects. As the purge tube 12 continues to rotate, the rotating terminal 24 contacts the fixed terminal 23 again, ensuring continuous circuit conduction. The electromagnet 22 is continuously energized, generating magnetic force to attract iron filings. During the continuous rotation of the purge tube 12, the circuit is repeatedly opened and closed through mechanical contact, allowing the adsorption and release of iron filings to alternate.

[0083] When the fixed terminal 23 and the rotary terminal 24 are not in contact, the vertical plane of the electromagnet 22 does not intersect with the workpiece 18. When the power is off, the spatial position of the electromagnet 22 is limited to below and to the side of the workpiece 18, located in a non-interference area with the workpiece 18. This can be achieved by adjusting the relative position of the rotary terminal 24 and the electromagnet 22 to prevent the adsorbed iron filings from falling back onto the workpiece 18 when the electromagnet 22 releases the adsorbed material, thus avoiding ineffective operation.

[0084] When there are multiple rotary terminals 24, all rotary terminals 24 are connected in parallel and conduct. The circuit is connected as long as one rotary terminal 24 is in contact with the fixed terminal 23. The purpose of providing multiple rotary terminals 24 is to change the switching frequency of the circuit; the more rotary terminals 24 there are, the higher the switching frequency of the circuit.

[0085] When multiple rotary terminals 24 are used, and the central angle of the fixed terminal 23 is set to α, the included angle between the two outermost rotary terminals 24 needs to be less than 360°-α. This ensures that when rotated to a certain angle, all rotary terminals 24 can simultaneously separate from the fixed terminal 23, thus de-energizing the circuit.

[0086] Example 7:

[0087] A mounting bracket is provided at the free end of the purge tube 12. The mounting bracket includes an annular mounting ring, which is coaxially arranged with the purge tube 12. The mounting ring is fixed to the outer wall of the purge tube 12 by multiple radial connecting arms, which are evenly arranged along the reversing direction. The purge head 15, brush head 16, and electromagnet 22 can all be fixed on the mounting ring.

[0088] Multiple blow-off heads 15, brush heads 16 and electromagnets 22 can be set. Each blow-off head 15, brush head 16 and electromagnet 22 constitute a cleaning component. The blow-off head 15, brush head 16 and electromagnet 22 in each cleaning component are arranged close to each other in the circumferential direction. The electromagnet 22 can attract the iron filings blown off and brushed off in time and release them on the outside of the workpiece 18.

[0089] Example 8:

[0090] A workpiece clamping device includes a worktable 1, on which a chuck mechanism 2 is disposed. The chuck mechanism 2 generally includes a chuck 3 for clamping a workpiece 18 and a chuck drive mechanism for driving the chuck 3 to rotate. The chuck 3 can generally be an existing three-jaw chuck, and has three jaws 7 for clamping the workpiece. The workpiece clamping device includes the cleaning device described in any of the above claims. The chuck mechanism 2 is located between a clamping component and a moving component; the moving component can drive a blowing component into the chuck mechanism 2.

[0091] Before mounting the workpiece 18 onto the chuck 3, the free end of the workpiece 18 (the free end refers to the end of the workpiece 18 that is freely set during processing) is fixed on the clamping assembly. The outer surface of the fixed end of the workpiece 18 and the inner surface of the jaws 7 on the chuck 3 are cleaned using a cleaning device. Specifically, the cleaning device can be used for non-contact pneumatic cleaning, the brush head 16 can be used for contact brushing, and the electromagnet 22 can be used for non-contact magnetic adsorption.

[0092] The system enables automated cleaning of the outer surface of the workpiece 18 clamping end and the clamping surface of the fixture before clamping. This avoids the impact of debris adhering to the workpiece 18 and the fixture on the clamping accuracy of the workpiece 18, improves the accuracy of the clamping operation, achieves automated cleaning, and reduces downtime during the processing.

[0093] The above are merely preferred embodiments of this utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

Claims

1. A cleaning device for workpieces before clamping, characterized in that, include: Clamping assembly for clamping the free end of a workpiece; A movable component is disposed opposite to a clamping component along the axial direction of the workpiece, the movable component including a movable module capable of moving along the axial direction of the workpiece; and The purging assembly includes an air pump fixed on a movable module, a purging pipe connected to the air pump via a rotary joint, the purging pipe being coaxially arranged with the workpiece, the free end of the purging pipe being connected to a purging head eccentrically arranged therewith, and a first driving part connected to the purging pipe to drive its rotation.

2. The cleaning device according to claim 1, characterized in that, The clamping assembly includes: Two clamping arms are positioned radially and horizontally on both sides of the workpiece. Clamping blocks for holding the workpiece are fixed to the upper ends of the two clamping arms, and the two clamping blocks are mirror-oriented. The second drive unit, connected to the lower end of the clamping arm, is used to drive the two clamping arms to move closer or further apart, and can lock the two clamping arms.

3. The cleaning device according to claim 2, characterized in that, The second drive unit includes: Fixed support; A double-ended screw is arranged horizontally along the radial direction of the workpiece. The two ends of the double-ended screw are rotatably fixed to a fixed support. The two ends of the double-ended screw have threads with opposite helical directions. Drive component, used to drive the double-ended screw to rotate; and Two screw sleeves are threadedly connected to both ends of the double-ended screw, respectively; The lower end of the clamping arm is fixed to the corresponding screw sleeve.

4. The cleaning device according to claim 1, characterized in that, The first driving unit includes: Driven gear, fixed to the outer wall of purge pipe; and The first motor is fixed on the moving module, and a driving gear that meshes with the driven gear is fixed on the output shaft of the first motor.

5. The cleaning device according to claim 1, characterized in that, The free end of the purge tube is fixed with a brush head that is eccentrically positioned thereto.

6. The cleaning device according to claim 5, characterized in that, The brush head has two brush surfaces that are distributed radially opposite to each other along the workpiece.

7. The cleaning device according to claim 1, characterized in that, An electromagnet is fixed to the free end of the purge tube and is eccentrically positioned thereon. The length direction of the electromagnet is along the axial direction of the purge tube, and the electromagnet is connected to a power supply component.

8. The cleaning device according to claim 7, characterized in that, The power supply component controls the electromagnet to be energized or de-energized via a terminal block assembly. The terminal block assembly includes: A fixed terminal block, fixed to the movable module, is arc-shaped and surrounds the outside of the purge pipe, concentrically arranged with the purge pipe; and The rotating terminal block has one end insulatedly fixed to the outer wall of the purge tube, and the other end can contact the fixed terminal block to form a conductive circuit between the power supply component and the electromagnet.

9. The cleaning device according to claim 8, characterized in that, When the fixed terminal and the rotary terminal are not in contact, the vertical plane of the electromagnet is downward and does not intersect with the workpiece.

10. A workpiece clamping device, comprising a worktable, wherein a chuck mechanism is provided on the worktable, characterized in that, The workpiece clamping device includes the cleaning device as described in any one of claims 1 to 9; The chuck mechanism is located between the clamping component and the moving component; The moving component can drive the purging component into the chuck mechanism.

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