Self-adaptive suction clamping type tapping device adaptive to sheet metal part machining

Abstract

The invention discloses a self-adaptive suction clamping type tapping device adaptive to sheet metal part machining, and relates to the technical field of tapping devices.The self-adaptive suction clamping type tapping device comprises a connecting handle, a cutting block is fixedly connected to the bottom of the connecting handle, a plurality of straight grooves are formed in the outer side of the cutting block, and the multiple straight grooves are evenly distributed in the outer side of the cutting block; the outer side of the cutting block is fixedly connected with threaded teeth, a plurality of spiral grooves are formed in the outer side of the cutting block, and the multiple spiral grooves are evenly distributed in the outer side of the cutting block. According to the self-adaptive suction clamping type tapping device adaptive to sheet metal part machining, the straight groove can guide most cuttings to be rapidly discharged out of the hole in the axial direction, the spiral groove can reversely push the cuttings to the hole opening position by means of the rotating force of the spiral angle, the cuttings are prevented from being retained at the bottom of the blind hole in cooperation with an external expansion structure of the straight groove, and the machining efficiency is improved. At the moment, axial chip removal of the straight groove and spiral chip removal of the spiral groove are complementary, and universality of through hole and blind hole machining is achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of tapping device, in particular to a self-adaptive suction clamping type tapping device suitable for sheet metal part machining. BACKGROUND

[0002] In the mechanical manufacturing, automobile parts, electronic equipment and other industries, sheet metal parts as the core structure or assembly carrier, its processing quality directly determines the assembly precision, connection stability and service life of the terminal product. As a key link for sheet metal parts to realize threaded connection, high-precision threaded holes need to be processed on thin and easily deformed sheet metal substrates, which not only ensures the integrity of the thread profile and coaxiality, but also avoids the problems of warping and tearing of sheet metal parts.

[0003] In the prior art, such as patent No. CN110253050B discloses a portable precision control punching and tapping mechanism, which realizes that the position of the drill bit or tap is always along the vertical downward direction, so that it is evenly stressed during operation and does not tilt, effectively improving the precision and stability of the assembly personnel in the punching and tapping operation.

[0004] However, in the process of tapping sheet metal parts, the chip shape produced by different materials is different, the curled chip is easy to wrap around the tap or block the chip groove, and the fine chip is easy to remain at the bottom of the threaded hole, which is difficult to completely discharge. And the cooling liquid sprayed externally needs to pass through the air layer to reach the cutting area. Due to the centrifugal force generated by the high-speed rotation of the tap, the cooling liquid is easy to splash and lose, and the amount of cooling liquid actually reaching the contact interface between the cutting edge and the workpiece is limited. At the same time, the motor is easy to appear idle phenomenon at the moment of starting, which not only affects the machining precision of the starting end of the thread, but also may cause invalid friction between the cutting edge of the tap and the surface of the sheet metal part, resulting in blade wear or scratch on the surface of the sheet metal part. SUMMARY

[0005] To solve the above technical problems, the present application is realized by the following technical scheme: a self-adaptive suction clamping type tapping device suitable for sheet metal part machining, comprising a base, a top of a rear end of the base is fixedly connected with a slide rail, an inside of the slide rail is slidably connected with a fixing seat, a top of one end of the fixing seat close to the slide rail is fixedly connected with a motor, a bottom of the fixing seat is rotatably connected with a transmission member, one end of the transmission member is fixedly connected with an output end of the motor; A connecting piece is rotatably installed at the bottom of the fixing seat, and the connecting piece is connected with the output end of the motor through the transmission member; The tapping assembly includes a connecting shank, to which a cutting block is fixedly connected. The cutting block has a U-shaped straight groove on its outer side, with an arc-shaped middle section and inclined sides. The groove gradually widens outwards from the end of the cutting block furthest from the connecting shank to the end closest to it. The arc-shaped middle section reduces the contact area between the chips and the groove wall, lowering frictional resistance and preventing chips from sticking together. The rounded transition also prevents stress concentration and enhances the cutting edge strength. The inclined sides form a natural guide slope, guiding chips to slide along the groove wall towards the exit direction, preventing chip accumulation and clogging. Simultaneously, the groove's width gradually increases from bottom to top, forming a funnel shape, expanding the chip space and further reducing... The reduced chip damage to the machined threads further decreases cutting resistance and prevents tap breakage due to excessive load on the tapping machine. Multiple straight flutes are evenly distributed on the outer side of the cutting block. Threaded teeth are fixedly connected to the outer side of the cutting block, which also features a helical groove. The straight flutes guide most chips to be quickly discharged axially out of the hole, while the helical grooves, using the directional force of the helix angle, push the chips in the opposite direction to the hole opening. Combined with the outward expansion structure of the straight flutes, this prevents chips from accumulating at the bottom of blind holes. The axial chip removal of the straight flutes and the directional chip removal of the helical grooves complement each other, achieving versatility for machining through holes and blind holes, reducing tool change frequency. Multiple helical grooves are evenly distributed on the outer side of the cutting block.

[0006] Preferably, a handle is rotatably connected to the outer side of the fixed base, a guide rod is fixedly connected to the top of the base at the end away from the slide rail, and a fixed block is fixedly connected to the top of the base at the end away from the slide rail. The guide rod passes through the fixed block. When the equipment is placed on the workpiece to be processed, the base is powered on, causing the base and the workpiece to be magnetically attracted, thus fixing the equipment on the workpiece. Then, the fixed base slides on the slide rail, causing the fixed base to drive the bottom tapping assembly to tap the workpiece. By adding a guide rod in the direction of vertical movement, the guide rod and the slide rail form a composite guide. The guide rod can strictly limit the degree of freedom of the mechanism in the horizontal direction, forcing the lifting component to move along a preset vertical trajectory, effectively avoiding swaying and jamming, and ensuring the linear accuracy and coaxiality of vertical movement. The guide rod is slidably connected to the middle of the fixed base, and a connecting tube is fixedly connected inside the fixed base. One end of the connecting tube is connected to the connecting piece, and the end of the connecting tube away from the connecting piece passes through the fixed base.

[0007] Preferably, a limiting block is fixedly connected to the top of the connecting handle. The limiting block is trapezoidal, and a straight block is fixedly connected to the top of the limiting block. Two trapezoidal slots are provided on the outer side of the limiting block, symmetrically arranged around the limiting block. A flow guide is fixedly connected to the outer side of the connecting handle. The directional coolant flow guided by the flow guide can form a continuous scouring force along the tap axis. Combined with the straight groove structure of the cutting block itself, this achieves hydraulic chip removal. For through-hole machining, the coolant can push the chips quickly out of the hole along the cutting block axis. For blind hole machining, the coolant can trap the chips in the reserved space at the bottom of the blind hole, preventing chips from accumulating and clogging in the chip groove, preventing chips from scratching the machined thread side or causing the cutting block to jam or break. Furthermore, the scouring effect of the coolant can remove fine debris remaining on the thread surface, further improving the thread machining quality. The diameter of the flow guide is smaller than the diameter of the cutting block. A feed groove is provided inside the cutting block. The device is equipped with two feed troughs and two guide troughs. The feed troughs are connected to the guide troughs, and coolant is introduced into the connecting pipe. The coolant enters the feed trough through the connecting pipe, then enters the guide trough through the feed trough, and finally sprays out from the round hole. The feed troughs and guide troughs form a flow channel. By setting up an internal coolant flow channel, the coolant can be directly delivered to the inside of the tap and accurately sprayed out through the outer round hole. With the guidance and constraint of the guide shroud, the coolant is forced to flow along the axial direction of the cutting block, which can quickly remove the heat generated by cutting, reduce the temperature rise of the cutting block, and avoid tool tempering and softening caused by high temperature. It achieves directional cooling and lubrication of the cutting zone. At the same time, a continuous oil film is formed between the cutting edge and the workpiece, reducing cutting friction resistance and reducing the surface roughness of the thread. The two feed troughs and guide troughs are arranged alternately. The feed troughs pass through the cutting block, the limiting block, and the straight block and are connected to the connecting pipe. The limiting block has a round hole on the outer side near the guide shroud, and the round hole is connected to the guide trough.

[0008] Preferably, the connecting component includes a gear ring, which is connected to the output end of the motor via a transmission component. The gear ring is rotatably connected to the bottom of the fixed base. A cylinder is fixedly connected to the bottom of the gear ring. An intermediate ring is fixedly connected to the inner side of the cylinder at the end away from the gear ring. A groove is formed on the inner side of the intermediate ring at the end away from the gear ring. A limit plate is provided at the bottom of the intermediate ring. There are two limit plates, which are symmetrically arranged around the intermediate ring. A through hole is formed in the middle of the limit plate. A limit block is located inside the through hole. A return spring is fixedly connected to the side of the limit plate above the intermediate ring at the end away from the intermediate ring. The two magnetic blocks have opposite magnetic properties. Under the action of the mutual attraction between the two magnetic blocks, the locking block is located inside the locking groove, thereby fixing the connecting block to the tapping assembly. The limiting plate is then installed on the limiting block and the straight block, with the connecting block positioned between the two side blocks on the inner wall of the intermediate ring. At this point, the magnetic block is located inside the slide groove. The inclined surface between the magnetic block and the slide groove increases the contact area, allowing the preload to be evenly distributed across the entire contact surface. Simultaneously, the inclined structure converts part of the axial force generated by external vibration or load into a clamping force perpendicular to the contact surface, creating a self-locking tendency. This effectively suppresses loosening and displacement issues that may occur during long-term high-frequency operation, ensuring the stability of the connection structure. A circular plate is fixedly connected to the end of the return spring away from the limiting plate. The circular plate is fixedly connected to the fixed seat and rotatably connected to the cylinder. A connecting block is located in the middle of the inner ring, fitted onto the outside of the straight block. The block has a square groove inside, and a locking block is slidably connected inside the groove. The locking block is located inside the groove, and a connecting rod is fixedly connected to the side of the locking block away from the groove. The connecting rod passes through the connecting block and extends into the groove. A magnetic block is fixedly connected to the end of the connecting rod away from the locking block. The magnetic block is located inside the groove, and the side of the magnetic block away from the connecting rod is inclined. The side of the groove that contacts the magnetic block is also inclined. The contact surfaces of the groove and the magnetic block are parallel. There are two grooves, symmetrically arranged inside the middle ring. A convex ring is fixedly connected to the end of the middle ring. There are two convex rings, symmetrically arranged around the middle ring. A buffer ring is set inside the convex ring. The motor is powered by an external power source. The motor drives the gear ring to rotate through the transmission component. The rotation of the moving cylinder causes the geared ring cylinder to drive the intermediate ring to rotate. The intermediate ring and the tapping assembly rotate. The protrusions on the upper and lower end faces of the intermediate ring form a concave-convex meshing constraint with the groove of the limiting plate. In the initial state, the protrusions are embedded in the groove, directly restricting the circumferential degree of freedom of the rotating parts and avoiding freewheeling and surging phenomena caused by transmission backlash at the moment of equipment start-up. With the preload of the return spring, the protrusions can be tightly pressed against the inner wall of the groove, forming a rigid limit. At the moment the parts change from stationary to rotating, the return spring can absorb the starting impact through its own elastic deformation, avoiding rigid collision between the protrusions and the groove, reducing the wear rate of the contact surfaces, and extending the service life of the intermediate ring and the limiting plate. There are two buffer rings, which are symmetrically arranged in the vertical direction with the connecting block as the center.Side blocks are fixedly connected to the inner wall of the intermediate ring. These side blocks are symmetrically arranged horizontally around the connecting block. Multiple protrusions are fixedly connected to the end edges of the intermediate ring. A slot is formed on the side of the limiting plate near the protrusion, and the protrusion is located inside the slot.

[0009] Preferably, the base includes a housing, which is fixedly connected to a fixing block. An inner cavity is formed at the bottom of the housing, and a middle block is slidably connected to the center of the inner cavity. The middle block and the block itself are magnetic modules. A compression spring is installed inside the inner cavity. The inner cavity is trapezoidal in shape, and the trapezoidal slope can laterally limit the movement of multiple magnetic modules, preventing lateral displacement or misalignment of the modules during tapping vibration. This avoids weakening of the magnetic attraction force due to module displacement. The continuous preload of the compression spring can compensate for displacement of the magnetic modules caused by wear or magnetic gaps, ensuring that the magnetic modules always maintain close contact with the adsorption surface, guaranteeing long-term stability of the magnetic attraction strength, and effectively preventing slippage or overturning of the tapping machine during processing due to vibration. The inclined surface constraint of the trapezoidal inner cavity inside the housing and the preload of the compression spring work synergistically. The two ends of the compression spring are respectively connected to… The middle block is fixedly connected to the inner wall of the inner cavity, and a heat sink is fixedly connected to the side of the middle block. A circular groove is opened at the bottom of the middle block. Two blocks are slidably connected inside the inner cavity, and the two blocks are symmetrically arranged with the middle block as the center. The modular design allows for flexible increase or decrease of the number of magnetic modules according to the weight requirements of the tapping machine, improving the adaptability of the magnetic base. Moreover, the magnetic attraction surface of the multi-module array is subjected to more uniform force, which can avoid stress concentration caused by single-point magnetic attraction and protect the surface accuracy of the adsorption base. The circular groove at the bottom of the magnetic module can effectively adapt to the small protrusions or uneven surfaces of the adsorption base. When there are fine burrs or scratches on the adsorption base, the circular groove can accommodate these protruding structures and avoid magnetic attraction failure caused by local gaps. At the same time, the circular groove can increase the adsorption area between the magnetic module and the adsorption surface, enhancing the magnetic attraction force.

[0010] This invention provides an adaptive suction-clamp tapping device suitable for sheet metal machining. It offers the following advantages: (i) The adaptive suction-clamp tapping device adapted to sheet metal parts processing reduces the contact area between the chips and the groove wall through the central arc design, reduces frictional resistance, and prevents chips from sticking in the groove. In addition, the rounded transition can avoid stress concentration and enhance the strength of the cutting edge. The inclined groove walls on both sides form a natural guide slope, which can guide the chips to slide along the groove wall towards the outlet, avoiding chip accumulation and blockage.

[0011] (ii) This adaptive suction-clamp tapping device, adapted for sheet metal machining, can guide most of the chips to be quickly discharged out of the hole along the axial direction through the straight groove, and the spiral groove can push the chips back to the hole opening position by means of the spiral angle. The expansion structure of the straight groove prevents the chips from being stuck at the bottom of the blind hole. At this time, the axial chip removal of the straight groove and the spiral chip removal of the spiral groove complement each other, realizing the versatility of through hole and blind hole machining and reducing the frequency of tool change.

[0012] (III) This adaptive suction-clamp tapping device, adapted for sheet metal processing, can directly deliver coolant to the inside of the tap by setting a built-in coolant flow channel. The coolant is then precisely sprayed out through the outer circular hole. With the guidance and constraint of the guide shroud, the coolant is forced to flow along the cutting block axis, which can quickly remove the heat generated by cutting, reduce the temperature rise of the cutting block, and avoid tool tempering and softening caused by high temperature, thus achieving directional cooling and lubrication of the cutting zone.

[0013] (iv) The adaptive suction-clamp tapping device adapted to sheet metal processing forms a concave-convex meshing constraint through the protrusions on the upper and lower end faces of the intermediate ring and the groove of the limiting plate. In the initial state, the protrusions are embedded in the groove, directly restricting the circumferential degree of freedom of the rotating parts, avoiding the free rotation and scrambling phenomenon caused by transmission gap at the moment of equipment start-up. With the preload of the reset spring, the protrusions can be pressed tightly against the inner wall of the groove to form a rigid limit. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the structure of the present invention viewed from below; Figure 3 This is a cross-sectional structural schematic diagram of the present invention; Figure 4 This is a schematic diagram of a portion of the structure of the present invention; Figure 5 This is a schematic diagram of a portion two of the present invention; Figure 6 This is a schematic diagram of the tapping assembly of the present invention; Figure 7 This is a cross-sectional structural schematic diagram of the tapping assembly of the present invention; Figure 8 For the present invention Figure 7 A structural schematic diagram of the enlarged view at point A in the middle; Figure 9 This is a cross-sectional structural schematic diagram of the connector of the present invention; Figure 10 This is a schematic diagram of the structure of the intermediate ring of the present invention; Figure 11 This is a partial cross-sectional structural schematic diagram of the connector of the present invention; Figure 12This is a schematic diagram of the structure of the base of the present invention; Figure 13 This is a cross-sectional structural diagram of the base of the present invention.

[0015] In the diagram: 1. Base; 101. Outer shell; 102. Block; 103. Intermediate block; 104. Heat sink; 105. Circular groove; 106. Compression spring; 107. Inner cavity; 2. Slide rail; 3. Fixed seat; 4. Motor; 5. Connecting piece; 51. Gear ring; 52. Cylinder; 53. Intermediate ring; 54. Slide groove; 55. Buffer ring; 56. Limiting plate; 57. Return spring; 58. Locking block; 59. Connecting rod; 510. Magnetic block; 511. Through hole 512. Square groove; 513. Protrusion; 514. Side block; 515. Protruding ring; 516. Connecting block; 6. Tapping assembly; 61. Connecting handle; 62. Cutting block; 63. Thread tooth; 64. Straight groove; 65. Spiral groove; 66. Limiting block; 67. Slot; 68. Straight block; 69. Flow guide; 610. Flow guide groove; 611. Round hole; 612. Feed groove; 7. Transmission component; 8. Guide rod; 9. Fixing block; 10. Handle; 11. Connecting pipe. Detailed Implementation

[0016] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0017] First embodiment, such as Figures 1 to 8 As shown, the present invention provides a technical solution: an adaptive suction-clamp tapping device adapted to sheet metal processing, including a base 1, a slide rail 2 fixedly connected to the top of the rear end of the base 1, a fixed seat 3 slidably connected inside the slide rail 2, a motor 4 fixedly connected to the top of the fixed seat 3 near the slide rail 2, and a transmission component 7 rotatably connected to the bottom of the fixed seat 3, one end of the transmission component 7 being fixedly connected to the output end of the motor 4. Connector 5 is rotatably mounted on the bottom of the fixed base 3, and is connected to the output end of the motor 4 via transmission component 7; The tapping assembly 6 includes a connecting shank 61, with a cutting block 62 fixedly connected to the bottom of the connecting shank 61. A straight groove 64 is formed on the outer side of the cutting block 62. The straight groove 64 is U-shaped, with an arc-shaped middle section and inclined sides. The straight groove 64 gradually widens outwards from the end of the cutting block 62 furthest from the connecting shank 61 to the end closest to the connecting shank 61. The arc-shaped design in the middle reduces the contact area between the chips and the groove wall, lowers frictional resistance, and prevents chips from sticking together in the groove. The rounded transition also avoids stress concentration and enhances the cutting edge strength. The inclined groove walls on both sides form a natural guide slope, guiding the chips to slide along the groove wall towards the outlet, preventing chip accumulation and clogging. Simultaneously, the width of the straight groove 64 gradually increases from the bottom to the top, forming a funnel shape, expanding the chip space and reducing chip buildup. The chips scratch the machined threads, further reducing cutting resistance and preventing tap breakage due to excessive load on the tapping machine. There are multiple straight grooves 64, which are evenly distributed on the outside of the cutting block 62. Threaded teeth 63 are fixedly connected to the outside of the cutting block 62. A spiral groove 65 is opened on the outside of the cutting block 62. The straight grooves 64 can guide most of the chips to be quickly discharged out of the hole along the axial direction. The spiral grooves 65 can push the chips in the opposite direction to the hole opening position by means of the helical angle. The outward expansion structure of the straight grooves prevents chips from being stuck at the bottom of the blind hole. At this time, the axial chip removal of the straight grooves 64 and the helical chip removal of the spiral grooves 65 complement each other, realizing the versatility of through hole and blind hole machining, reducing the frequency of tool change. There are multiple spiral grooves 65, which are evenly distributed on the outside of the cutting block 62.

[0018] A handle 10 is rotatably connected to the outside of the fixed base 3. A guide rod 8 is fixedly connected to the top of the end of the base 1 away from the slide rail 2. A fixing block 9 is fixedly connected to the top of the end of the base 1 away from the slide rail 2. The guide rod 8 passes through the fixing block 9. When the equipment is placed on the workpiece to be processed, the base 1 is powered on, so that the base 1 and the workpiece are magnetically attracted, and the equipment is fixed on the workpiece. Then the fixed base 3 slides on the slide rail 2, so that the fixed base 3 drives the bottom tapping assembly 6 to tap the workpiece. After adding the guide rod 8 in the direction of vertical movement, the guide rod 8 and the slide rail 2 form a composite guide. The guide rod 8 can strictly limit the degree of freedom of the mechanism in the horizontal direction, force the lifting component to move along the preset vertical trajectory, effectively avoid swaying and jamming, and ensure the linear accuracy and coaxiality of vertical movement. The guide rod 8 is slidably connected to the middle of the fixed base 3. A connecting pipe 11 is fixedly connected inside the fixed base 3. One end of the connecting pipe 11 is connected to the connecting piece 5, and the end of the connecting pipe 11 away from the connecting piece 5 passes through the fixed base 3.

[0019] A limiting block 66 is fixedly connected to the top of the connecting handle 61. The limiting block 66 is trapezoidal in shape, and a straight block 68 is fixedly connected to the top of the limiting block 66. Two trapezoidal slots 67 are provided on the outer side of the limiting block 66, symmetrically arranged around the limiting block 66. A flow guide 69 is fixedly connected to the outer side of the connecting handle 61. The directional coolant flow guided by the flow guide 69 can form a continuous scouring force along the tap axis. Combined with the straight groove structure of the cutting block 62, hydraulic chip removal is achieved. For through-hole machining, the coolant can be pushed... The moving chips are rapidly discharged from the hole along the axial direction of the cutting block 62. For blind hole machining, the coolant can carry the chips to the reserved space at the bottom of the blind hole, preventing the chips from accumulating and clogging in the chip groove, thus preventing the chips from scratching the machined thread side or causing the cutting block 62 to jam or break. In addition, the flushing effect of the coolant can also remove the fine debris remaining on the thread surface, further improving the thread machining quality. The diameter of the guide shield 69 is smaller than the diameter of the cutting block 62. The cutting block 62 has a feed groove 612 inside and a guide groove 610 inside. The number of feed grooves 612 is... There are two flow channels 610. The feed channel 612 is connected to the flow channel 610. Coolant is introduced into the connecting pipe 11. The coolant enters the feed channel 612 through the connecting pipe 11, and then enters the flow channel 610 through the feed channel 612. Finally, it is sprayed out from the round hole 611. The feed channel 612 and the flow channel 610 form a flow channel. By setting the built-in coolant flow channel, the coolant can be directly delivered to the inside of the tap and accurately sprayed out through the outer round hole 611. With the guidance and constraint of the flow guide shroud 69, the coolant is forced to flow along the cutting block 6. 2. Axial flow can quickly remove the heat generated by cutting, reduce the temperature rise of the cutting block 62, avoid tool tempering and softening caused by high temperature, realize directional cooling and lubrication of the cutting zone, and form a continuous oil film between the cutting edge and the workpiece to reduce cutting friction resistance and reduce thread surface roughness. Two feed grooves 612 and guide grooves 610 are alternately arranged. The feed groove 612 passes through the cutting block 62, the limiting block 66 and the straight block 68 and is connected to the connecting pipe 11. The limiting block 66 has a round hole 611 on the outside near the guide shroud 69, and the round hole 611 is connected to the guide groove 610.

[0020] The second embodiment is based on the first embodiment; please refer to [link / reference]. Figures 9 to 11As shown, the connecting member 5 includes a toothed ring 51, which is connected to the output end of the motor 4 via a transmission member 7. The toothed ring 51 is rotatably connected to the bottom of the fixed base 3. A cylinder 52 is fixedly connected to the bottom of the toothed ring 51. An intermediate ring 53 is fixedly connected to the inner side of the cylinder 52 away from the toothed ring 51. A groove 54 is opened on the inner side of the intermediate ring 53 away from the toothed ring 51. A limit plate 56 is provided at the bottom of the intermediate ring 53. There are two limit plates 56, which are symmetrically arranged with the intermediate ring 53 as the center. A through hole 511 is opened in the middle of the limit plate 56. A limit block 66 is located inside the through hole 511. A return spring 57 is fixedly connected to the side of the limit plate 56 above the intermediate ring 53 away from the intermediate ring 53. The magnetic properties of the two magnetic blocks 510 are opposite. The mutual attraction between them causes the locking block 58 to be positioned inside the slot 67, thus fixing the connecting block 516 to the tapping assembly 6. Then, the limiting plate 56 is installed on the limiting block 66 and the straight block 68, positioning the connecting block 516 at the interval between the two side blocks 514 on the inner wall of the intermediate ring 53. At this time, the magnetic block 510 is located inside the sliding groove 54. The inclined surface between the magnetic block 510 and the sliding groove 54 increases the contact area, allowing the preload to be evenly distributed across the entire contact surface. Simultaneously, the inclined structure converts part of the axial force generated by external vibration or load into a clamping force perpendicular to the contact surface, creating a self-locking tendency and effectively suppressing the component from engaging in long-term... To address loosening and displacement issues that may occur during high-frequency operation and ensure the stability of the connection structure, a circular plate is fixedly connected to the end of the return spring 57 away from the limit plate 56. The circular plate is fixedly connected to the fixed base 3 and rotatably connected to the cylinder 52. A connecting block 516 is provided in the middle of the inner ring 53, and the connecting block 516 is sleeved on the outside of the straight block 68. A square groove 512 is opened inside the connecting block 516, and a locking block 58 is slidably connected inside the square groove 512. The locking block 58 is located inside the locking groove 67. A connecting rod 59 is fixedly connected to the side of the locking block 58 away from the locking groove 67. The connecting rod 59 passes through the connecting block 516 and extends into the sliding groove 54. A magnetic block 510 is fixedly connected to the end of the connecting rod 59 away from the locking block 58. Inside the slide groove 54, the side of the magnetic block 510 away from the connecting rod 59 is inclined, and the side of the slide groove 54 that contacts the magnetic block 510 is also inclined. The contact surfaces of the slide groove 54 and the magnetic block 510 are parallel. There are two slide grooves 54, symmetrically arranged inside the intermediate ring 53. A convex ring 515 is fixedly connected to the end of the intermediate ring 53. There are two convex rings 515, symmetrically arranged with the intermediate ring 53 as the center. A buffer ring 55 is provided inside the convex ring 515. The motor 4 is powered by an external power source. The motor 4 drives the gear ring 51 to rotate through the transmission component 7. The gear ring 51 drives the cylinder 52 to rotate, which in turn drives the intermediate ring 53 to rotate. The intermediate ring 53 and the tapping assembly 6 rotate.The protrusions 513 on the upper and lower end faces of the intermediate ring 53 form a concave-convex engagement constraint with the groove of the limiting plate 56. In the initial state, the protrusions 513 are embedded in the groove, directly restricting the circumferential degree of freedom of the rotating parts, avoiding free rotation and lateral movement caused by transmission clearance at the moment of equipment startup. With the preload of the return spring 57, the protrusions 513 can be tightly pressed against the inner wall of the groove, forming a rigid limit. At the moment when the part changes from stationary to rotating, the return spring 57 can absorb the starting impact through its own elastic deformation, avoiding rigid collision between the protrusions 513 and the groove. To reduce the wear rate of the contact surfaces and extend the service life of the intermediate ring 53 and the limiting plate 56, two buffer rings 55 are provided, symmetrically arranged vertically around the connecting block 516. Side blocks 514 are fixedly connected to the inner wall of the intermediate ring 53, symmetrically arranged horizontally around the connecting block 516. Multiple protrusions 513 are fixedly connected to the end edges of the intermediate ring 53. A slot is provided on the side of the limiting plate 56 near the protrusions 513, with the protrusions 513 located inside the slot.

[0021] The third embodiment is based on embodiments one and two; please refer to [link / reference]. Figures 12 to 13As shown, the base 1 includes a housing 101, which is fixedly connected to the fixing block 9. An inner cavity 107 is formed at the bottom of the housing 101. A middle block 103 is slidably connected to the middle of the inner cavity 107. The middle block 103 and the block 102 are magnetic modules. A compression spring 106 is installed inside the inner cavity 107. The inner cavity 107 is trapezoidal in shape, and the trapezoidal slope can provide lateral restraint for multiple magnetic modules, preventing lateral displacement or misalignment of the modules during tapping vibration. This avoids weakening of the magnetic attraction force due to module displacement. The continuous preload of the compression spring 106 can compensate for the displacement of the magnetic modules caused by wear or magnetic gaps, ensuring that the magnetic modules always maintain a tight fit with the adsorption surface, guaranteeing long-term stability of the magnetic attraction strength, and effectively preventing slippage or overturning of the tapping machine during processing due to vibration. The slope constraint of the trapezoidal inner cavity 107 inside the housing 101 and the preload of the compression spring 106 work synergistically. The two ends of 06 are fixedly connected to the inner walls of the middle block 103 and the inner cavity 107, respectively. A heat sink 104 is fixedly connected to the side of the middle block 103. A circular groove 105 is opened at the bottom of the middle block 103. A block 102 is slidably connected inside the inner cavity 107. There are two blocks 102, which are symmetrically arranged with the middle block 103 as the center. The modular design can flexibly increase or decrease the number of magnetic modules according to the weight requirements of the tapping machine, improve the adaptability of the magnetic base, and the magnetic attraction surface of the multi-module array is more uniformly stressed, which can avoid stress concentration caused by single-point magnetic attraction and protect the surface accuracy of the adsorption base. The circular groove at the bottom of the magnetic module can effectively adapt to the small protrusions or uneven surfaces of the adsorption base. When there are fine burrs or scratches on the adsorption base, the circular groove can accommodate these protruding structures and avoid magnetic attraction failure caused by local gaps. At the same time, the circular groove can increase the adsorption area between the magnetic module and the adsorption surface and enhance the magnetic attraction force.

[0022] In use, the two magnetic blocks 510 have opposite magnetic properties. Under the mutual attraction between the two magnetic blocks 510, the card block 58 is located inside the card slot 67, thereby fixing the connecting block 516 to the tapping assembly 6. Then, the limiting plate 56 is installed on the limiting block 66 and the straight block 68, and the connecting block 516 is located at the interval between the two side blocks 514 on the inner wall of the middle ring 53, so that the tapping assembly 6 is installed on the fixed base 3.

[0023] The equipment is placed on the workpiece to be processed. The base 1 is powered on, so that the base 1 and the workpiece are magnetically attracted, thus fixing the equipment on the workpiece. Then the fixed seat 3 slides on the slide rail 2, so that the fixed seat 3 drives the bottom tapping assembly 6 to tap the workpiece.

[0024] Coolant is introduced into the inside of the connecting pipe 11. The coolant enters the inside of the feed trough 612 through the connecting pipe 11, and then enters the inside of the guide trough 610 through the feed trough 612. Finally, it is sprayed out from the round hole 611.

[0025] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0026] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An adaptive suction-clamp tapping device adapted for sheet metal processing, characterized in that, include: The base (1) has a slide rail (2) fixedly connected to the top of the rear end of the base (1), and a fixed seat (3) is slidably connected inside the slide rail (2). A motor (4) is fixedly connected to the top of the fixed seat (3) near the slide rail (2), and a transmission component (7) is rotatably connected to the bottom of the fixed seat (3). One end of the transmission component (7) is fixedly connected to the output end of the motor (4). Connector (5), which is rotatably mounted on the bottom of the fixed base (3), and is connected to the output end of the motor (4) through the transmission component (7); The tapping assembly (6) includes a connecting shank (61), a cutting block (62) is fixedly connected to the bottom of the connecting shank (61), a straight groove (64) is provided on the outer side of the cutting block (62), there are multiple straight grooves (64) evenly distributed on the outer side of the cutting block (62), a threaded tooth (63) is fixedly connected to the outer side of the cutting block (62), a spiral groove (65) is provided on the outer side of the cutting block (62), there are multiple spiral grooves (65) evenly distributed on the outer side of the cutting block (62).

2. The adaptive suction-clamp tapping device adapted for sheet metal processing according to claim 1, characterized in that: A handle (10) is rotatably connected to the outside of the fixed seat (3). A guide rod (8) is fixedly connected to the top of the end of the base (1) away from the slide rail (2). A fixing block (9) is fixedly connected to the top of the end of the base (1) away from the slide rail (2). The guide rod (8) passes through the fixing block (9). The guide rod (8) is slidably connected to the middle of the fixed seat (3). A connecting pipe (11) is fixedly connected inside the fixed seat (3). One end of the connecting pipe (11) is connected to the connector (5). The end of the connecting pipe (11) away from the connector (5) passes through the fixed seat (3).

3. The adaptive suction-clamp tapping device adapted for sheet metal processing according to claim 1, characterized in that: The top of the connecting handle (61) is fixedly connected to a limiting block (66), which is trapezoidal in shape. A straight block (68) is fixedly connected to the top of the limiting block (66), and a slot (67) is provided on the outer side of the limiting block (66), which is trapezoidal in shape.

4. The adaptive suction-clamp tapping device adapted for sheet metal processing according to claim 3, characterized in that: There are two slots (67), and the two slots (67) are symmetrically arranged with the limiting block (66) as the center. A flow guide (69) is fixedly connected to the outside of the connecting handle (61). The diameter of the flow guide (69) is smaller than the diameter of the cutting block (62). A feed groove (612) is opened inside the cutting block (62).

5. The adaptive suction-clamp tapping device adapted for sheet metal processing according to claim 4, characterized in that: The cutting block (62) has a guide groove (610) inside. There are two feed grooves (612) and two guide grooves (610). The feed grooves (612) and guide grooves (610) are connected. The two feed grooves (612) and guide grooves (610) are alternately arranged.

6. The adaptive suction-clamp tapping device adapted for sheet metal processing according to claim 5, characterized in that: The feed trough (612) passes through the cutting block (62), the limiting block (66) and the straight block (68) and is connected to the connecting pipe (11). The limiting block (66) has a round hole (611) on the outside near the guide shroud (69), and the round hole (611) is connected to the guide trough (610).

7. The adaptive suction-clamp tapping device adapted for sheet metal processing according to claim 6, characterized in that: The connector (5) includes a toothed ring (51), a cylinder (52) is fixedly connected to the bottom of the toothed ring (51), an intermediate ring (53) is fixedly connected to the inner side of the cylinder (52) away from the toothed ring (51), a groove (54) is provided on the inner side of the intermediate ring (53) away from the toothed ring (51), and a limiting plate (56) is provided at the bottom of the intermediate ring (53). There are two limiting plates (56), and the two limiting plates (56) are symmetrically arranged with the intermediate ring (53) as the center.

8. The adaptive suction-clamp tapping device adapted for sheet metal processing according to claim 7, characterized in that: The limiting plate (56) has a through hole (511) in the middle. The limiting block (66) is located inside the through hole (511). A reset spring (57) is fixedly connected to the side of the limiting plate (56) above the intermediate ring (53) away from the intermediate ring (53). A circular plate is fixedly connected to the end of the reset spring (57) away from the limiting plate (56). A connecting block (516) is provided in the middle of the interior of the intermediate ring (53). The connecting block (516) is sleeved on the outside of the straight block (68). A square groove (512) is provided inside the connecting block (516).

9. The adaptive suction-clamp tapping device adapted for sheet metal processing according to claim 8, characterized in that: A locking block (58) is slidably connected inside the square groove (512). The locking block (58) is located inside the groove (67). A connecting rod (59) is fixedly connected to the side of the locking block (58) away from the groove (67). A magnetic block (510) is fixedly connected to the end of the connecting rod (59) away from the locking block (58). A protruding ring (515) is fixedly connected to the end of the intermediate ring (53). There are two protruding rings (515). The two protruding rings (515) are symmetrically arranged with the intermediate ring (53) as the center. A buffer ring (55) is provided inside the protruding ring (515). A side block (514) is fixedly connected to the inner wall of the intermediate ring (53). A protrusion (513) is fixedly connected to the edge of the end of the intermediate ring (53).

10. The adaptive suction-clamp tapping device adapted for sheet metal processing according to claim 1, characterized in that: The base (1) includes a shell (101), the bottom of the shell (101) is provided with an inner cavity (107), an intermediate block (103) is slidably connected to the middle of the inner cavity (107), a compression spring (106) is provided inside the inner cavity (107), a heat sink plate (104) is fixedly connected to the side of the intermediate block (103), a circular groove (105) is provided at the bottom of the intermediate block (103), and a block (102) is slidably connected inside the inner cavity (107).

Images