Finish machining auxiliary clamping device of chuck clamp

Abstract

The invention relates to the technical field of workpiece auxiliary clamping devices for precision machining, in particular to a finish machining auxiliary clamping device of a chuck clamp, which comprises a fixed base and an auxiliary frame, an annular adjusting groove is formed in the auxiliary frame, and a clamping unit is movably arranged in the annular adjusting groove; dust collection assemblies are arranged on the two sides of the top of the fixed base, and a turnover regulation and control unit is further arranged in the fixed base. According to the multi-dimensional cooperative clamping device, a multi-dimensional cooperative clamping structure with vertical limiting and internal and external clamping is constructed through the clamping units, a limiting frame and a limiting block limit a chuck clamp from the vertical direction, a buffering block and a limiting clamping plate clamp a workpiece from the outer circumferential face and the inner circumferential face correspondingly, full-wrapping type clamping is achieved, clamping force is effectively dispersed, and the clamping efficiency is improved. Local stress concentration is avoided; meanwhile, a limiting air cushion arranged on the limiting block and a rubber cushion arranged on the limiting clamping plate both have the flexible contact characteristic, traditional rigid clamping can be replaced, and the risk of crushing the surface of the chuck clamp is reduced.

Description

Technical Field

[0001] This invention relates to the technical field of workpiece auxiliary clamping devices for precision machining, specifically a precision machining auxiliary clamping device for a chuck clamp. Background Technology

[0002] In the field of machining, chucks are the core components for workpiece positioning and clamping. Their precision machining accuracy directly determines the quality stability of subsequent workpiece processing. Especially in fields with stringent tolerance requirements, such as aerospace and precision instruments, the precision machining accuracy of key parts such as the inner circumferential surface, outer circumferential surface, and end face of the chuck needs to be controlled within the micron range.

[0003] Traditional auxiliary clamping devices mostly adopt radial or axial unidirectional clamping structures, such as the radial jaws of three-jaw / four-jaw chucks and the axial limiting of simple pressure plates. For chuck fixtures with thin-walled structures or irregular contours, uneven distribution of clamping force can easily cause local deformation of the workpiece, such as out-of-tolerance ovality of the outer circumference and warping of the end face. Moreover, most devices lack flexible clamping components, and rigid contact can easily cause surface damage to the chuck fixture, further affecting the precision of finishing.

[0004] To address this, we propose a finishing auxiliary clamping device for chuck fixtures. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a finishing auxiliary clamping device for chuck fixtures, which solves the aforementioned technical defects.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a precision machining auxiliary clamping device for a chuck clamp, comprising: a fixed base and an auxiliary frame; a support frame is fixedly provided on both sides of the top of the fixed base, and an auxiliary frame is movably provided between opposite sides of the two support frames; an annular adjustment groove is provided inside the auxiliary frame, and a clamping unit is movably provided inside the annular adjustment groove; dust collection components are provided on both sides of the top of the fixed base, and a flipping control unit is also provided inside the fixed base; The clamping unit includes a rotating adjustment frame and a connecting frame. The rotating adjustment frame is rotatably mounted inside the annular adjustment groove, and several connecting frames are fixedly mounted on the inner wall of the rotating adjustment frame. A rotating control motor is fixedly mounted on one side of the auxiliary frame, and a drive gear is fixedly mounted on one end of the output shaft of the rotating control motor. An annular tooth groove is provided on the outer circumferential surface of the rotating adjustment frame, and the tooth surface of the drive gear meshes with the surface of the annular tooth groove for transmission. An extension servo cylinder is fixedly mounted inside the connecting frame, and a limit frame is fixedly mounted on one end of the drive shaft of the extension servo cylinder. A buffer block is fixedly mounted on one side of the limit frame, and a pressure sensor is installed inside the buffer block.

[0007] Preferably, several of the connecting frames are arranged at equal angles about the central axis of the rotating adjustment frame.

[0008] Preferably, vertical linear slides are fixedly provided on both sides of the limiting frame, and a rotating shaft is slidably provided on one side of each of the two vertical linear slides. A movable frame is rotatably provided at one end of each of the two rotating shafts via a built-in motor, and a transverse linear slide is fixedly provided on the opposite side of each of the two movable frames. A mounting frame is slidably provided between the opposite sides of the two transverse linear slides.

[0009] Preferably, two miniature electric cylinders are fixedly installed on the top of the mounting frame, and a limiting block is movably installed on the bottom of the mounting frame. A limiting air cushion is fixedly installed on the bottom of the limiting block and on the side near the inner wall of the rotating adjustment frame. The bottom ends of the drive shafts of the two miniature electric cylinders are fixedly connected to the top of the limiting block.

[0010] Preferably, the bottom of the limiting frame is slidably provided with a telescopic frame via a built-in electric push rod, and two miniature electric cylinders are fixedly provided on both sides inside the telescopic frame. The telescopic frame is also movably provided with a limiting clamp, and the top ends of the drive shafts of the two miniature electric cylinders are respectively fixedly connected to the two sides at the bottom of the limiting clamp.

[0011] Preferably, the flip control unit includes a rotating rod and a flip servo motor. The flip servo motor is fixedly installed on the top of the fixed base, and the rotating rod is also rotatably installed inside the fixed base. Helical gears are fixedly installed on one end of the output shaft of the flip servo motor and the surface of the rotating rod, and the tooth surfaces of the two helical gears mesh for transmission.

[0012] Preferably, a drive shaft is rotatably mounted on the upper part of the interior of each of the two support frames, and a connecting sleeve is fixedly mounted on one side of each of the two support frames. One end of each of the two connecting sleeves is rotatably connected to both sides of the auxiliary frame, and one end of each of the two drive shafts passes through the two connecting sleeves and is fixedly connected to both sides of the auxiliary frame. Both ends of the rotating rod and one end of each of the two drive shafts are fixedly mounted with sprockets, and the surfaces of the two sprockets on the same side are connected by a chain drive.

[0013] Preferably, the dust collection assembly includes a dust collection guide frame and an air blowing guide frame. An annular air blowing groove is provided at the upper part of the auxiliary frame, and an annular dust collection groove is provided at the lower part of the auxiliary frame. Guide rings are fixedly provided on both the left and right sides of the auxiliary frame. The interior of the annular air blowing groove is connected to the interior of the guide ring located on the left side, and the interior of the annular dust collection groove is connected to the interior of the guide ring located on the right side.

[0014] Preferably, a dust-collecting guide frame is fixedly installed on one side of the support frame on the left side, and one side of the dust-collecting guide frame is rotatably connected to the inside of the guide ring on the left side, and the inside of the dust-collecting guide frame is in communication with the inside of the guide ring on the left side; an air-blowing guide frame is fixedly installed on one side of the support frame on the right side, and one side of the air-blowing guide frame is rotatably connected to the inside of the guide ring on the right side, and the inside of the air-blowing guide frame is in communication with the inside of the guide ring on the right side.

[0015] Preferably, a dust pump and a dust collection box are fixedly installed on the left side of the top of the fixed base, and the discharge end of the dust pump is connected to the inside of the dust collection box, and the feed end of the dust pump is connected to the inside of the dust collection guide frame through a guide pipe; an air pump is fixedly installed on the right side of the top of the fixed base, and the air outlet end of the air pump is connected to the inside of the air blowing guide frame through an air guide pipe.

[0016] Compared with existing technologies, it has the following advantages: 1. A multi-dimensional collaborative clamping structure with upper and lower limits and internal and external clamping is constructed through the clamping unit. The limit frame and limit block limit the chuck fixture from the upper and lower directions, respectively, while the buffer block and limit clamping plate clamp the workpiece from the outer and inner peripheral surfaces, respectively, to achieve full-enclosed clamping, effectively dispersing the clamping force and avoiding localized force concentration. At the same time, the limit air cushion set in the limit block and the rubber pad set in the limit clamping plate have flexible contact characteristics, which can replace traditional rigid clamping and reduce the risk of pressure damage to the surface of the chuck fixture. The pressure sensors built into the buffer block and rubber pad can monitor the contact pressure in real time, which makes it easy to adjust the clamping force according to the material or wall thickness of the chuck fixture, further avoiding workpiece deformation caused by over-clamping and ensuring the precision of finishing.

[0017] 2. The flipping control unit in this invention adopts a synchronous transmission structure of helical gears, rotating rods, sprockets, and drive shafts. The flipping servo motor drives the rotating rod to rotate through the helical gears, and then drives the two drive shafts to rotate synchronously through the sprocket chain, ensuring that the forces on both sides of the auxiliary frame are balanced and the flipping is stable, avoiding flipping deviation caused by unilateral forces. The drive shaft is directly fixed to the auxiliary frame, and the connecting sleeve plays a guiding and limiting role for the drive shaft, which can reduce the transmission gap during the flipping process, improve the positional accuracy of the chuck fixture after flipping, eliminate the need for re-alignment of the reference, significantly shorten the auxiliary time for multi-face processing, and improve processing efficiency. At the same time, the flipping angle can be flexibly set according to processing requirements to adapt to processing scenarios of different end faces.

[0018] 3. The dust collection component in this invention adopts a surrounding structure design of an annular air blowing groove, an annular dust collection groove, and a guide ring. Both the annular air blowing groove and the annular dust collection groove are arranged around the auxiliary frame, which can cover the dead corner areas such as the outer peripheral surface, end face, and inner peripheral groove of the chuck fixture. The air pump delivers high-pressure airflow to the annular dust collection groove through the air blowing guide frame to blow away the dust attached to the workpiece surface. The dust collection pump generates negative pressure from the annular air blowing groove through the dust collection guide frame, which quickly sucks the blown-away dust into the dust collection box, forming a dust cleaning mode that combines blowing and suction, effectively reducing dust residue. At the same time, the guide ring is rotatably connected to the auxiliary frame and can move synchronously with the rotation of the auxiliary frame to ensure that the dust cleaning function is continuously effective during the rotation process, avoiding the impact of dust on the surface roughness and tool life of the machined surface.

[0019] 4. In this invention, the rotating adjustment frame of the clamping unit can rotate within the annular adjustment groove. The rotation control motor drives the rotation adjustment frame precisely by meshing with the annular toothed groove on the outer circumference of the rotating adjustment frame through a drive gear. Since the chuck fixture is fixed on the rotating adjustment frame through the clamping unit, the rotation of the rotating adjustment frame can drive the workpiece to adjust its angle synchronously. This allows for multi-station precision machining of the outer circumference without disassembly and clamping, reducing the number of clamping operations and cumulative errors, and improving the positional accuracy between stations. At the same time, the rotation control motor can achieve precise angle control, adapting to the multi-station machining needs of different chuck fixture specifications, and enhancing the versatility of the device.

[0020] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures pointed out in the description and the drawings. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of a finishing auxiliary clamping device for a chuck fixture according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the internal structure of the auxiliary frame according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the auxiliary frame and clamping unit structure according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the connecting frame and limiting frame structure according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the telescopic frame and limiting block structure according to an embodiment of the present invention; Figure 6 This is a schematic diagram of the structure of the fixed base, the dust suction guide rack, and the air blowing guide rack in an embodiment of the present invention; Figure 7 This is a schematic diagram of the flip control unit structure according to an embodiment of the present invention.

[0022] In the diagram: 1. Fixed base; 2. Support frame; 3. Auxiliary frame; 4. Annular adjustment groove; 5. Clamping unit; 6. Dust collection assembly; 7. Tilting control unit; 8. Annular air blowing groove; 9. Annular dust collection groove; 10. Guide ring; 11. Rotary adjustment frame; 12. Rotary control motor; 13. Drive gear; 14. Connecting frame; 15. Extension servo cylinder; 16. Limiting frame; 17. Buffer block; 18. Vertical linear slide; 19. Horizontal linear slide. 20. Platform; 21. Rotating shaft; 22. Movable frame; 23. Mounting frame; 24. Miniature electric cylinder one; 25. Limiting block; 26. Limiting air cushion; 27. Telescopic frame; 28. Miniature electric cylinder two; 29. ​​Limiting clamp; 30. Dust collection box; 31. Dust suction pump; 32. Dust suction guide frame; 33. Air pump; 34. Air blowing guide frame; 35. Tilting servo motor; 36. Helical gear; 37. Connecting sleeve; 38. Drive shaft; 39. Sprocket; 30. Rotating rod. Detailed Implementation

[0023] 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.

[0024] Example 1

[0025] Please see Figures 1 to 7 As shown, a precision machining auxiliary clamping device for a chuck clamp includes: a fixed base 1 and an auxiliary frame 3. Support frames 2 are fixedly installed on both sides of the top of the fixed base 1, and an auxiliary frame 3 is movably installed between the opposite sides of the two support frames 2. An annular adjustment groove 4 is provided inside the auxiliary frame 3, and a clamping unit 5 is movably installed inside the annular adjustment groove 4. Dust collection components 6 are provided on both sides of the top of the fixed base 1, and a flip control unit 7 is also provided inside the fixed base 1.

[0026] The clamping unit 5 inside the annular adjustment groove 4 assists in clamping the chuck fixture during finishing. The dust collection components 6 set on both sides of the top of the fixed base 1 collect and treat the dust generated during the finishing process, thereby effectively improving the finishing effect of the chuck fixture. Furthermore, when finishing the lower end face of the chuck fixture, the auxiliary frame 3 is flipped by the flip control unit 7 to flip the lower end face of the chuck fixture to the top, realizing flexible control operation of the chuck fixture processing.

[0027] Specifically, the clamping unit 5 includes a rotating adjustment frame 11 and connecting frames 14. The rotating adjustment frame 11 is rotatably mounted inside the annular adjustment groove 4, and several connecting frames 14 are fixedly mounted on the inner wall of the rotating adjustment frame 11. The several connecting frames 14 are distributed at equal angles about the central axis of the rotating adjustment frame 11. A rotating control motor 12 is fixedly mounted on one side of the auxiliary frame 3, and a drive gear 13 is fixedly mounted on one end of the output shaft of the rotating control motor 12. The outer circumferential surface of the rotating adjustment frame 11 is provided with an annular toothed groove, and the tooth surface of the drive gear 13 meshes with the surface of the annular toothed groove for transmission. The output shaft of the rotating control motor 12 controls the drive gear 13 to rotate, thereby driving the rotating adjustment frame 11 to rotate inside the annular adjustment groove 4, thus rotating and adjusting the clamped chuck fixture.

[0028] Furthermore, an extension servo cylinder 15 is fixedly installed inside the connecting frame 14, and a limit frame 16 is fixedly installed at one end of the drive shaft of the extension servo cylinder 15. A buffer block 17 is fixedly installed on one side of the limit frame 16, and a pressure sensor is installed inside the buffer block 17. By controlling the contact between the buffer block 17 and the outer peripheral surface of the chuck fixture, the pressure sensor inside the buffer block 17 is used to monitor the limit pressure, so as to avoid excessive pressure causing deformation of the chuck fixture.

[0029] Furthermore, vertical linear slides 18 are fixedly installed on both sides of the limiting frame 16, and a rotating shaft 20 is slidably installed on one side of each of the two vertical linear slides 18. A movable frame 21 is rotatably installed at one end of each of the two rotating shafts 20 via a built-in motor. A transverse linear slide 19 is fixedly installed on the opposite side of each of the two movable frames 21. A mounting frame 22 is slidably installed between the opposite sides of the two transverse linear slides 19. Two miniature electric cylinders 23 are fixedly installed on the top of the mounting frame 22. A limiting block 24 is movably installed at the bottom of the mounting frame 22. A limiting air cushion 25 is fixedly installed on the bottom of the limiting block 24 and on the side near the inner wall of the rotating adjustment frame 11. The bottom ends of the drive shafts of the two miniature electric cylinders 23 are fixedly connected to the top of the limiting block 24.

[0030] Furthermore, a telescopic frame 26 is slidably mounted on the bottom of the limiting frame 16 via a built-in electric push rod, and two miniature electric cylinders 27 are fixedly mounted on both sides inside the telescopic frame 26. A limiting clamp 28 is also movably mounted inside the telescopic frame 26, and the top ends of the drive shafts of the two miniature electric cylinders 27 are fixedly connected to the two sides of the bottom of the limiting clamp 28 respectively. The side of the limiting clamp 28 near the buffer block 17 is set as an arc-shaped convex surface, and a rubber pad with a built-in pressure sensor is also fixedly mounted on the arc-shaped convex surface.

[0031] It should be noted that during the auxiliary clamping operation of the chuck clamp, the mounting bracket 22 is first flipped to one side by rotating shaft 20. Based on the diameter of the chuck clamp, the drive end of the extension servo cylinder 15 controls the limit bracket 16 to extend until the buffer block 17 contacts the outer circumferential surface of the chuck clamp. At this point, the bottom of the chuck clamp is placed on the upper surface of the limit bracket 16. Next, the movable bracket 21 is flipped to directly above the outer circumference of the chuck clamp using rotating shaft 20. The drive shafts of the two micro-cylinders 23 control the limit block 24 to move downwards, clamping the upper part of the outer circumference of the chuck clamp using the limit block 24. Simultaneously, the limit air cushions 25 provided at the bottom and sides of the limit block 24 fill the grooves of the chuck clamp, thus clamping the chuck clamp. The clamping of the chuck fixture provides elastic limiting, preventing deformation caused by rigid contact. Finally, the extension frame 26 is controlled by the built-in electric push rod of the limiting frame 16, allowing the limiting clamp 28 to be placed in the inner ring of the chuck fixture. At this time, the driving ends of the two micro electric cylinders 27 are used to control the limiting clamp 28 to rise upward, and then the extension frame 26 is controlled to reset inside the limiting frame 16 until one side of the limiting clamp 28 is in contact with the inner circumferential surface of the chuck fixture. The chuck fixture is clamped from top to bottom by the limiting frame 16 and the limiting block 24, and the inner and outer surfaces of the chuck fixture are clamped by the buffer block 17 and the limiting clamp 28. Through auxiliary clamping in multiple directions, the stability of the chuck fixture during the finishing process is ensured.

[0032] Specifically, the flip control unit 7 includes a rotating rod 39 and a flip servo motor 34. The flip servo motor 34 is fixedly installed on the top of the fixed base 1, and the rotating rod 39 is also rotatably installed inside the fixed base 1. Helical gears 35 are fixedly installed on one end of the output shaft of the flip servo motor 34 and on the surface of the rotating rod 39, and the tooth surfaces of the two helical gears 35 mesh for transmission. The upper part of the interior of the two support frames 2 is rotatably installed with transmission shafts 37, and connecting sleeves 36 are fixedly installed on one side of the two support frames 2. One end of the two connecting sleeves 36 is rotatably connected to the two sides of the auxiliary frame 3, and one end of the two transmission shafts 37 passes through the two connecting sleeves 36 and is fixedly connected to the two sides of the auxiliary frame 3. Sprockets 38 are fixedly installed at both ends of the rotating rod 39 and one end of the two transmission shafts 37, and the surfaces of the two sprockets 38 on the same side are connected by chain transmission.

[0033] It should be noted that when the auxiliary frame 3 is rotated, the output shaft of the rotation servo motor 34, in conjunction with two meshing helical gears 35, controls the rotation of the rotating rod 39. The sprockets 38 at both ends of the rotating rod 39, in conjunction with the chain, control the two transmission shafts 37 to rotate synchronously. The two transmission shafts 37 are used to control the auxiliary frame 3 to rotate, thereby realizing the finishing operation on the upper and lower surfaces of the chuck fixture.

[0034] Specifically, the dust collection component 6 includes a dust collection guide frame 31 and an air blowing guide frame 33. An annular air blowing groove 8 is provided at the upper part of the auxiliary frame 3, and an annular dust collection groove 9 is provided at the lower part of the auxiliary frame 3. Guide rings 10 are fixedly provided on both the left and right sides of the auxiliary frame 3. The interior of the annular air blowing groove 8 is connected to the interior of the guide ring 10 located on the left side, and the interior of the annular dust collection groove 9 is connected to the interior of the guide ring 10 located on the right side.

[0035] Furthermore, a dust-collecting guide frame 31 is fixedly installed on one side of the support frame 2 on the left side, and one side of the dust-collecting guide frame 31 is rotatably connected to the inside of the guide ring 10 on the left side, with the inside of the dust-collecting guide frame 31 communicating with the inside of the guide ring 10 on the left side; an air-blowing guide frame 33 is fixedly installed on one side of the support frame 2 on the right side, and one side of the air-blowing guide frame 33 is rotatably connected to the inside of the guide ring 10 on the right side, with the inside of the air-blowing guide frame 33 communicating with the inside of the guide ring 10 on the right side; a dust-collecting pump 30 and a dust collection box 29 are fixedly installed on the left side of the top of the fixed base 1, and the discharge end of the dust-collecting pump 30 is communicating with the inside of the dust collection box 29, while the feed end of the dust-collecting pump 30 is communicating with the inside of the dust-collecting guide frame 31 through a guide pipe; an air pump 32 is fixedly installed on the right side of the top of the fixed base 1, and the air outlet end of the air pump 32 is communicating with the inside of the air-blowing guide frame 33 through an air guide pipe.

[0036] It should be noted that during the precision machining of the chuck fixture, the dust generated during the machining process is sucked up by the dust pump 30 in conjunction with the dust suction guide frame 31, the guide ring 10 on the left side, and the annular air blowing groove 8; the dust adhering to the surface of the chuck fixture during the machining process is cleaned by the air pump 32 in conjunction with the air blowing guide frame 33, the guide ring 10 on the right side, and the annular dust suction groove 9, thereby improving the precision machining quality of the chuck fixture.

[0037] Specifically, this embodiment also discloses a working method of a chuck fixture finishing auxiliary clamping device, including the following steps: Step 1: Start the extension servo cylinder 15. Its drive end pushes the limit frame 16 to move towards the outer periphery of the chuck clamp until the buffer block 17 is in complete contact with the outer peripheral surface of the chuck clamp. At this time, the pressure sensor built into the buffer block 17 monitors the contact pressure in real time. When the pressure reaches the preset threshold, the extension servo cylinder 15 automatically stops according to the workpiece material setting, such as 50-100N for metal parts and 20-50N for thin-walled parts, to avoid rigid extrusion that could cause workpiece deformation. Start the motor built into the rotating shaft 20 to control the movable frame 21 to rotate around the rotating shaft 20 to directly above the outer periphery of the chuck clamp. Simultaneously start the two micro electric cylinders 23. Their drive shafts drive the limit block 24 to move vertically downward until the limit air cushion 25 at the bottom of the limit block 24 is in contact with the upper surface of the chuck clamp, and the limit air cushion 25 on the side of the limit block 24 is embedded in the outer peripheral groove of the chuck clamp. 5. Flexible positioning is achieved by filling the gap in the groove through elastic deformation, preventing the workpiece from moving during processing; the electric push rod built into the limiting frame 16 is activated to push the telescopic frame 26 to extend towards the inner circumference of the chuck fixture until the limiting clamping plate 28 is fully inserted into the inner ring space of the chuck fixture; the two micro electric cylinders 27 are activated, and their drive shafts drive the limiting clamping plate 28 to be lifted vertically upward and adjusted to a height that matches the inner circumference surface of the chuck fixture; the telescopic frame 26 is controlled to reset inside the limiting frame 16 until the rubber pad on the arc-shaped convex surface of the limiting clamping plate 28 contacts the inner circumference surface of the chuck fixture, and the pressure sensor built into the rubber pad reports that the pressure meets the standard, completing the inner circumference clamping; the real-time data of all pressure sensors is read by the control system to confirm that the contact pressure of the buffer block 17, the limiting air cushion 25, and the limiting clamping plate 28 are all within the preset range, and that the chuck fixture has no offset or deformation, completing the clamping process; Step 2: When precision machining is required on different outer peripheral positions of the chuck fixture, start the rotary control motor 12, whose output shaft drives the drive gear 13 to rotate. Due to the meshing transmission between the drive gear 13 and the annular toothed groove on the outer peripheral surface of the rotary adjustment frame 11, the rotary adjustment frame 11 will rotate smoothly within the annular adjustment groove 4, thereby driving the connecting frame 14 and the clamped chuck fixture to rotate synchronously. Set the rotation angle according to the machining requirements. After rotation to the desired position, the rotary control motor 12 automatically locks to ensure accurate machining positioning. Start the air pump 32 and dust pump 30 of the dust collection assembly 6. The high-pressure air pump 32 generates high-pressure air... The compressed airflow enters the blowing guide frame 33 through the air guide pipe, and is guided into the annular dust collection groove 9 through the right guide ring 10. The airflow is ejected from the opening of the annular dust collection groove 9, blowing away the machining dust adhering to the surface of the chuck fixture. The negative pressure generated by the dust pump 30 acts on the dust collection guide frame 31 through the guide pipe, and is guided into the annular blowing groove 8 through the left guide ring 10. The blown-away dust and machining debris are sucked into the annular blowing groove 8, and finally transported to the dust collection box 29 for collection through the dust collection guide frame 31. The dust collection component 6 is kept running throughout the finishing process to avoid dust accumulation affecting machining accuracy or damaging the tool. Step 3: When the lower end face of the chuck fixture needs to be precision machined, the clamping unit 5 is finely adjusted by the control system. The micro electric cylinder 23 drives the limit block 24 to move upward and the extension servo cylinder 15 drives the limit frame 16 to slightly retract, leaving only the limit clamping plate 28 to lightly clamp the workpiece. The flipping servo motor 34 of the flipping control unit 7 is started, and its output shaft drives a helical gear 35 to rotate. Since the two helical gears 35 mesh and transmit power, the other helical gear 35 drives the rotating rod 39 to rotate synchronously inside the fixed base 1. The sprockets 38 at both ends of the rotating rod 39 drive the two transmission shafts 37 to rotate synchronously through the chain. The transmission shaft 37 passes through the connecting sleeve 36 and is fixedly connected to the auxiliary frame 3. Therefore, the auxiliary frame 3 rotates with the transmission shaft 37 until the lower end face of the chuck fixture flips to the upward position. After flipping to the correct position, the flipping servo motor 34 is locked, and the clamping unit 5 is restarted to clamp the chuck fixture according to the process in Step 1. Then the lower end face can be precision machined. During the machining process, the dust collection component 6 is kept running normally. Step 4: After finishing, first turn off the dust pump 30 and air pump 32, then release the clamping unit 5 in sequence through the control system. The micro electric cylinder 27 drives the limit clamping plate 28 to move down, the telescopic frame 26 to reset, the rotating shaft 20 drives the mounting frame 22 to flip to one side, and the extension servo electric cylinder 15 drives the limit frame 16 to reset.

[0038] In summary, this invention constructs a multi-dimensional collaborative clamping structure with upper and lower limits and internal and external clamping through clamping unit 5. Limiting frame 16 and limiting block 24 limit the chuck fixture from the upper and lower directions, respectively. Buffer block 17 and limiting clamping plate 28 clamp the workpiece from the outer and inner peripheral surfaces, respectively, achieving full-enclosed clamping, effectively dispersing clamping force and avoiding localized force concentration. At the same time, the limiting air cushion 25 set in limiting block 24 and the rubber pad set in limiting clamping plate 28 both have flexible contact characteristics, which can replace traditional rigid clamping and reduce the risk of pressure damage to the surface of the chuck fixture. The pressure sensors built into buffer block 17 and rubber pad can monitor the contact pressure in real time, making it easy to adjust the clamping force according to the material or wall thickness of the chuck fixture, further avoiding workpiece deformation caused by over-clamping and ensuring precision machining.

[0039] The flipping control unit 7 in this invention adopts a synchronous transmission structure of helical gear 35, rotating rod 39, sprocket 38 and transmission shaft 37. The flipping servo motor 34 drives the rotating rod 39 to rotate through the helical gear 35, and then drives the two transmission shafts 37 to rotate synchronously through the sprocket chain, ensuring that the auxiliary frame 3 is subjected to balanced force on both sides and flipping is stable, avoiding flipping deviation caused by force on one side. The transmission shaft 37 is directly fixedly connected to the auxiliary frame 3, and the connecting sleeve 36 plays a guiding and limiting role for the transmission shaft 37, which can reduce the transmission gap during the flipping process, improve the positional accuracy of the chuck fixture after flipping, eliminate the need for re-alignment of the reference, significantly shorten the auxiliary time for multi-face processing, and improve processing efficiency. At the same time, the flipping angle can be flexibly set according to processing requirements to adapt to processing scenarios of different end faces.

[0040] The dust collection component 6 in this invention adopts a surrounding structure design of an annular air blowing groove 8, an annular dust collection groove 9, and a guide ring 10. Both the annular air blowing groove 8 and the annular dust collection groove 9 are arranged around the auxiliary frame 3, which can cover the dead corner areas such as the outer peripheral surface, end face, and inner peripheral groove of the chuck fixture. The air pump 32 delivers high-pressure airflow to the annular dust collection groove 9 through the air blowing guide frame 33 to blow away the dust attached to the workpiece surface. The dust collection pump 30 generates negative pressure from the annular air blowing groove 8 through the dust collection guide frame 31 to quickly suck the blown dust into the dust collection box 29, forming a dust cleaning mode that combines blowing and suction, effectively reducing dust residue. At the same time, the guide ring 10 is rotatably connected to the auxiliary frame 3 and can move synchronously with the auxiliary frame 3 as it flips, ensuring that the dust cleaning function is continuously effective during the flipping process and avoiding the impact of dust on the surface roughness and tool life of the machined surface.

[0041] In this invention, the rotating adjustment frame 11 of the clamping unit 5 can rotate within the annular adjustment groove 4. The rotating control motor 12 drives the rotating adjustment frame 11 through the meshing of the annular tooth groove on the outer periphery of the rotating adjustment frame 11 via the drive gear 13, thereby achieving precise rotation of the rotating adjustment frame 11. Since the chuck fixture is fixed on the rotating adjustment frame 11 through the clamping unit 5, the rotation of the rotating adjustment frame 11 can drive the workpiece to adjust its angle synchronously. This allows for multi-station precision machining of the outer periphery without disassembly and clamping, reducing the number of clamping operations and cumulative errors, and improving the positional accuracy between stations. At the same time, the rotating control motor 12 can achieve precise angle control, adapting to the multi-station machining needs of different chuck fixtures and enhancing the versatility of the device.

[0042] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0043] 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 process, method, article, or apparatus.

[0044] 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. A finishing auxiliary clamping device of a chuck clamp, characterized by, The utility model relates to a fixing base (1) and auxiliary frame (3), both sides of the top of fixing base (1) are fixedly provided with support frame (2), and the movable setting of auxiliary frame (3) between the opposite side of two support frames (2), the inside of auxiliary frame (3) is provided with annular adjusting groove (4), and the movable setting of annular adjusting groove (4) is provided with clamping unit (5) in, both sides of the top of fixing base (1) are provided with dust collection subassembly (6), and the inside of fixing base (1) is also provided with turnover control unit (7), clamping unit (5) includes rotary adjusting frame (11) and connecting frame (14), the inside rotation of annular adjusting groove (4) is provided with rotary adjusting frame (11), and the inner wall of rotary adjusting frame (11) is fixedly provided with a plurality of connecting frames (14), one side of auxiliary frame (3) is fixedly provided with rotary control motor (12), and the output shaft one end of rotary control motor (12) is fixedly provided with drive gear (13), the outer circumferential surface of rotary adjusting frame (11) is provided with annular gear slot, and the tooth surface of drive gear (13) is engaged with the surface of annular gear slot and is driven, the inside of connecting frame (14) is fixedly provided with extension servo cylinder (15), and the drive shaft one end of extension servo cylinder (15) is fixedly provided with limit frame (16), one side of limit frame (16) is fixedly provided with buffer block (17), and the inside of buffer block (17) is provided with pressure sensor. A plurality of connecting frames (14) are arranged at equal angles about the central axis of the rotary adjusting frame (11).

2. A finishing aid clamping device for a chuck clamp according to claim 1, characterized in that Both sides of the limit frame (16) are fixedly provided with vertical linear sliding tables (18), and one side of the two vertical linear sliding tables (18) is slidingly provided with rotating shafts (20). One end of the two rotating shafts (20) is rotatably provided with movable frames (21) through built-in motors. One side of the two movable frames (21) is fixedly provided with horizontal linear sliding tables (19). The opposite sides of the two horizontal linear sliding tables (19) are slidingly provided with mounting frames (22).

3. The finishing aid chucking device of claim 1, wherein The top of the mounting frame (22) is fixedly provided with two micro-cylinders (23). The bottom of the mounting frame (22) is movably provided with a limiting block (24). The bottom of the limiting block (24) and the side close to the inner wall of the rotary adjusting frame (11) are fixedly provided with limiting air cushions (25). The drive shafts of the two micro-cylinders (23) are fixedly connected to the top of the limiting block (24).

4. A finishing aid clamping device for a chuck clamp according to claim 3, characterized in that The bottom of the limiting frame (16) is slidingly provided with an extension frame (26) through a built-in electric push rod. The inside of the extension frame (26) is fixedly provided with micro-cylinders (27) on both sides. The inside of the extension frame (26) is also movably provided with a limiting clamping plate (28). The drive shafts of the two micro-cylinders (27) are fixedly connected to the bottom of the limiting clamping plate (28) on both sides.

5. The finishing aid chucking device of claim 1 wherein, ​ 6. The finishing aid chucking device of claim 1 wherein, The turnover regulating unit (7) comprises a rotating rod (39) and a turnover servo motor (34), the top of the fixed base (1) is fixedly provided with the turnover servo motor (34), and the inside of the fixed base (1) is further rotatably provided with the rotating rod (39), one end of the output shaft of the turnover servo motor (34) and the surface of the rotating rod (39) are both fixedly provided with bevel gears (35), and the tooth surfaces of the two bevel gears (35) are in mesh transmission.

7. A finishing aid clamping device for a chuck clamp according to claim 6, characterized in that The inside of each of the two support frames (2) is rotatably provided with a transmission shaft (37), and one side of each of the two support frames (2) is further fixedly provided with a connecting sleeve (36), one end of each of the two connecting sleeves (36) is rotatably connected with the two sides of the auxiliary frame (3), one end of each of the two transmission shafts (37) penetrates through the two connecting sleeves (36) and is fixedly connected with the two sides of the auxiliary frame (3); the two ends of the rotating rod (39) and one end of each of the two transmission shafts (37) are all fixedly provided with sprockets (38), and the surfaces of the two sprockets (38) on the same side are in transmission connection through a chain.

8. The finishing aid chucking device of claim 1, wherein, The dust suction assembly (6) comprises a dust suction guide frame (31) and a blowing guide frame (33), the top of the inside of the auxiliary frame (3) is provided with an annular blowing groove (8), and the bottom of the inside of the auxiliary frame (3) is further provided with an annular dust suction groove (9), the left and right sides of the auxiliary frame (3) are both fixedly provided with guide rings (10), the inside of the annular blowing groove (8) is in communication with the inside of the guide ring (10) on the left side, and the inside of the annular dust suction groove (9) is in communication with the inside of the guide ring (10) on the right side.

9. The finishing aid chucking device of claim 1 wherein, One side of the support frame (2) on the left side is fixedly provided with the dust suction guide frame (31), one side of the dust suction guide frame (31) is rotatably connected with the inside of the guide ring (10) on the left side, and the inside of the dust suction guide frame (31) is in communication with the inside of the guide ring (10) on the left side; one side of the support frame (2) on the right side is fixedly provided with the blowing guide frame (33), one side of the blowing guide frame (33) is rotatably connected with the inside of the guide ring (10) on the right side, and the inside of the blowing guide frame (33) is in communication with the inside of the guide ring (10) on the right side.

10. A finishing aid clamping device for a chuck clamp according to claim 9, characterized in that The top of the fixed base (1) is fixedly provided with a dust suction pump (30) and a dust collecting box (29) on the left side, the discharge end of the dust suction pump (30) is in communication with the inside of the dust collecting box (29), the feeding end of the dust suction pump (30) is in communication with the inside of the dust suction guide frame (31) through a guide pipe, the top of the fixed base (1) is fixedly provided with an air pump (32) on the right side, and the air outlet end of the air pump (32) is in communication with the inside of the blowing guide frame (33) through an air guide pipe.

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