Large capacity semi-automatic inner hole polishing device and method for inner hole polishing thereof

Abstract

The present application relates to the technical field of polishing equipment, in particular to a large-capacity semi-automatic inner hole polishing equipment and a method for inner hole polishing thereof. The large-capacity semi-automatic inner hole polishing equipment comprises a work platform, a jig oscillation device, a laminated jig, a jig driving system and a double-pulse synchronous driving system.

Description

Technical Field

[0001] This invention relates to the field of polishing equipment technology, specifically to a large-capacity semi-automatic internal hole polishing equipment and a method for polishing internal holes. Background Technology

[0002] In industries such as precision machinery manufacturing, optics, and semiconductors, the inner surfaces of ring-shaped parts, such as ceramic rings, sapphire substrates, and metal bushings, require polishing to meet specific surface finish and precision requirements. Currently, the mainstream process for inner hole polishing utilizes the relative motion between the polishing tool and the product's inner hole to remove material. However, this process faces the following long-standing and unresolved technical challenges:

[0003] (1) The contradiction between processing capacity and tool rigidity: In order to improve efficiency, the industry has tried to stack multiple thin products for processing. However, as the number of stacked products increases, the overhang length of polishing tools (such as brushes) increases significantly, forming a "super large length-to-diameter ratio" structure, which leads to a sharp decrease in rigidity. Under high-speed rotation, the tool is prone to vibration and bending, which not only shortens its own life, but also causes vibration marks, scratches and dimensional deviations in the inner hole of the workpiece, which seriously restricts the processing capacity of a single operation.

[0004] (2) Poor polishing uniformity: Existing equipment has a single motion mode, usually only tool rotation and axial feed, or workpiece rotation. This makes the contact trajectory between the tool and the inner hole surface simple and repetitive, which easily produces uneven material removal at different depths of the inner hole, resulting in poor polishing consistency and difficulty in obtaining an ideal uniform surface.

[0005] (3) Low level of automation and low production efficiency: The traditional single-piece processing mode and non-quick-change fixture design result in long loading, unloading and positioning of products, frequent interruptions in the production process, low overall efficiency, high labor costs, and difficulty in meeting the needs of modern mass production. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this invention provides a large-capacity semi-automatic internal hole polishing equipment and a method for internal hole polishing, aiming to solve the problems of tool rigidity, polishing uniformity, and production efficiency under large-capacity stacked wafers.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] In a first aspect, the present invention discloses a large-capacity semi-automatic internal hole polishing device, comprising:

[0009] Work platform;

[0010] A fixture oscillation device is installed on the working platform, and its output end is connected to a movable frame to drive the movable frame to perform reciprocating oscillation.

[0011] The stacking fixture includes an upper chuck shaft, a fixture sleeve, a pressure plate, and a lower chuck shaft. The upper chuck shaft and the lower chuck shaft are respectively fixedly connected to the top and bottom of the fixture sleeve to form a receiving cavity. Several products to be polished are stacked in the receiving cavity. The upper chuck shaft and the lower chuck shaft abut against the products to be polished through the pressure plate.

[0012] A fixture driving system is slidably connected to the working platform. The fixture driving system oscillates vertically up and down under the drive of the fixture oscillation device. The fixture driving system is used to install and connect the upper chuck shaft and the lower chuck shaft and drive the stacking fixture to rotate.

[0013] A dual-pulse synchronous drive system, installed on the working platform, includes a polishing tool, a bidirectional drive mechanism for driving the polishing tool to rotate, and a feed mechanism for avoiding the installation of the polishing tool. The polishing tool passes through the stacked jig to polish the inner hole of the product to be polished in the receiving cavity.

[0014] Furthermore, the working platform includes a worktable, a work frame, and a lifting guide rail. The work frame is fixedly connected to the worktable, the lifting guide rail is fixedly connected to the work frame in the vertical direction, the fixture oscillation device is fixedly connected to the work frame, the fixture drive system is slidably connected to the work frame through the lifting guide rail, and a part of the bidirectional drive mechanism is fixedly connected to the worktable, while the other part is slidably connected to the work frame through the feed mechanism.

[0015] Furthermore, the fixture oscillation device includes a first drive motor, a reducer, an eccentric wheel, a first bearing, a swing shaft, a second bearing, an output connecting plate, and a frame. The frame is fixedly connected to the work frame. The first drive motor is fixedly connected to the frame through the reducer. The eccentric wheel is driven by the reducer. The eccentric wheel is connected to one end of the swing shaft through the first bearing. The other end of the swing shaft is connected to the output connecting plate through the second bearing.

[0016] Furthermore, the fixture driving system includes the movable frame, the first guide rail, the first driving device, the first driving cylinder, and the auxiliary tailstock. The bottom of the output connecting plate is fixedly connected to the top of the movable frame. The movable frame is slidably connected to the work frame via the lifting guide rail. The first guide rail is fixedly connected to the movable frame in the vertical direction. The first driving device is slidably connected to the movable frame via the first guide rail. The first driving cylinder is fixedly connected to the movable frame and is drively connected to the first driving device for driving the first driving device to move up and down along the first guide rail. The auxiliary tailstock is fixedly connected to the movable frame and is used for mounting and connecting to the lower chuck shaft. The first driving device is used for mounting and connecting to the upper chuck shaft and is used to drive the stacking fixture to rotate.

[0017] Furthermore, the first driving device includes a movable base, a second drive motor, a hollow reducer, a first quick-release chuck, and a first mounting plate. The first drive cylinder is drivenly connected to the movable base, and the movable base is slidably connected to the movable frame via the first guide rail. The second drive motor is fixedly connected to the movable base and is drivenly connected to the hollow reducer. The first quick-release chuck is fixedly connected to the movable base via the first mounting plate, and the hollow reducer is drivenly connected to the first quick-release chuck. The first quick-release chuck is connected to the upper chuck shaft.

[0018] Furthermore, the auxiliary tailstock includes a second mounting plate, a tailstock bearing housing, a tailstock bearing, and a tailstock shaft. The second mounting plate is fixedly connected to the movable frame, the tailstock bearing housing is fixedly connected to the second mounting plate, the tailstock shaft is connected to the tailstock bearing housing through the tailstock bearing, and the lower chuck shaft is connected to the tailstock shaft.

[0019] Furthermore, the feeding mechanism includes a second guide rail and a second drive cylinder, the bidirectional drive mechanism includes a second drive device and a tail clamping device, the polishing tool is a brush, the second guide rail is fixedly connected to the second drive device in the vertical direction, the second drive device is slidably connected to the moving frame through the second guide rail, the second drive cylinder is fixedly connected to the work frame and is drivenly connected to the second drive device to drive the second drive device to move up and down along the second guide rail, the tail clamping device is fixedly connected to the worktable, the lower end of the brush is fixedly installed on the tail clamping device, the second drive device is used to install and connect with the upper end of the brush, the second drive device and the tail clamping device are used to drive the brush to rotate, the brush passes through the upper chuck shaft and the lower chuck shaft, and the brush is used to polish the inner hole of the product to be polished in the receiving cavity.

[0020] Furthermore, the second driving device includes a lifting frame, a third driving motor, a first bearing seat, a third bearing, a first output shaft, and a second quick-release chuck. The lifting frame is slidably connected to the moving frame via the second guide rail. A through hole is provided at the top of the lifting frame. The first bearing seat is fixedly connected to the through hole. The third driving motor is fixedly connected to the first bearing seat. The first output shaft is connected to the first bearing seat via the third bearing. The third driving motor is drively connected to the first output shaft. The first output shaft is fixedly connected to the second quick-release chuck. The second quick-release chuck is used to fix the upper end of the brush, and the third driving motor is used to drive the brush to rotate.

[0021] Furthermore, the tail clamping device includes a mounting base, a third drive cylinder, a moving plate, a lifting guide rod, a chuck seat, a third quick-release chuck, a second bearing seat, a fourth bearing, a second output shaft, and a fourth drive motor. The mounting base is fixedly connected to the worktable, the third drive cylinder is fixedly connected to the mounting base and is drively connected to the moving plate, the bottom of the lifting guide rod is fixedly connected to the moving plate, the top of the lifting guide rod is fixedly connected to the chuck seat, the lifting guide rod passes through the mounting base, the second bearing seat is fixedly connected to the chuck seat, the second output shaft is connected to the second bearing seat through the fourth bearing, the fourth drive motor is fixedly connected to the chuck seat and is drively connected to the second output shaft, the third quick-release chuck is fixedly connected to the second output shaft, the third quick-release chuck is used to fix the lower end of the brush, and the fourth drive motor is used to drive the brush to rotate.

[0022] Secondly, the present invention also discloses a method for polishing internal holes using the aforementioned large-capacity semi-automatic internal hole polishing equipment, comprising the following steps:

[0023] Several products to be polished are stacked in the receiving cavity of the stacking fixture and fixed by pressure plates;

[0024] The second drive cylinder drives the second drive device to rise along the second guide rail, making way for the space required to replace the stacking fixture.

[0025] The first drive cylinder drives the first drive device to rise along the first guide rail, making way for the space required to replace the stacking fixture.

[0026] Install the lower chuck shaft of the lamination fixture onto the auxiliary tailstock;

[0027] The first drive cylinder drives the first drive device to descend along the first guide rail, thereby pressing the stacked jig.

[0028] After clamping, the first drive device clamps the upper chuck shaft of the stacking fixture to achieve bidirectional positioning of the shaft and the end face.

[0029] The second drive cylinder drives the second drive device to descend along the second guide rail, thereby achieving the clamping of the brush by the second drive device and the tail clamping device.

[0030] The second drive device and the tail clamping device drive the brush to rotate synchronously, while the first drive device drives the stacking fixture to rotate.

[0031] The first drive motor drives the moving frame and the stacking fixture mounted on it to oscillate up and down;

[0032] The combined effect of the rotation and oscillation of the stacked jig and the rotation of the brush allows for the simultaneous polishing of the inner holes of all products to be polished.

[0033] The beneficial effects of the large-capacity semi-automatic internal hole polishing equipment and the method for internal hole polishing described in this invention are as follows:

[0034] (1) Achieved true large-capacity and high-efficiency polishing: Through the design of stacked jigs, a large number of thin workpieces can be clamped in the cavity formed by the upper chuck shaft, jig sleeve, pressure plate and lower chuck shaft for simultaneous processing, which transforms the production mode from single piece to efficient batch, and the production capacity is increased by orders of magnitude.

[0035] (2) Excellent polishing uniformity and consistency are achieved: The workpiece is driven to rotate by the fixture drive system, and the workpiece is driven to oscillate up and down along the brush axis by the fixture oscillation device. This is combined with the rotation of the polishing tool driven by the dual-pulse synchronous drive system, forming a multi-dimensional composite motion in the axial and circumferential directions. This motion ensures that the polishing trajectory covers the inner surface of the workpiece in an all-round and irregular manner, effectively avoiding repeated wear marks caused by single motion. This makes the material removal rate and polishing tool wear extremely uniform, significantly improving the consistency of processing quality and extending tool life.

[0036] (3) The rigidity problem of ultra-large length-to-diameter ratio tools has been completely solved: the dual-pulse synchronous drive system clamps, tensions and drives the polishing tool from both ends at the same time, providing solid double-end support for the slender polishing tool, greatly enhancing the rigidity of the system, effectively suppressing the shaking and swaying under high-speed rotation, thereby ensuring the hole accuracy and surface quality of the workpiece.

[0037] (4) It achieves efficient semi-automatic operation: both the stacking fixture and the polishing tool adopt quick-clamp interface and integrate a cylinder-driven lifting mechanism, which makes changing product batches and polishing tools extremely quick, greatly reducing the labor intensity and skill requirements of operators, and improving the stability and automation level of production cycle. Attached Figure Description

[0038] Figure 1 This is a schematic diagram of the overall structure of a large-capacity semi-automatic internal hole polishing device according to an embodiment of the present invention;

[0039] Figure 2 This is a schematic diagram of the working platform according to an embodiment of the present invention;

[0040] Figure 3 This is a schematic diagram of the structure of the jig oscillation device according to an embodiment of the present invention;

[0041] Figure 4 This is a schematic diagram of the fixture driving system according to an embodiment of the present invention;

[0042] Figure 5 This is a cross-sectional schematic diagram of the fixture driving system according to an embodiment of the present invention;

[0043] Figure 6 This is a schematic diagram of the structure of the stacking fixture according to an embodiment of the present invention;

[0044] Figure 7 This is a cross-sectional schematic diagram of the stacking fixture according to an embodiment of the present invention;

[0045] Figure 8 This is a schematic diagram of the structure of the dual-pulse synchronous drive system according to an embodiment of the present invention;

[0046] Figure 9 This is a schematic diagram of the structure of the second guide rail and the lifting frame according to an embodiment of the present invention;

[0047] Figure 10 This is a cross-sectional schematic diagram of the tail clamping device according to an embodiment of the present invention;

[0048] Figure 11 This is a cross-sectional schematic diagram of the second driving device according to an embodiment of the present invention;

[0049] Figure 12 This is a flowchart illustrating the method for polishing internal holes using a large-capacity semi-automatic internal hole polishing device according to an embodiment of the present invention.

[0050] Explanation of reference numerals in the attached figures:

[0051] 1. Working platform; 11. Workbench; 12. Work frame; 13. Lifting guide rail; 2. Stacking jig; 21. Upper chuck shaft; 22. Jig sleeve; 23. Pressure plate; 24. Lower chuck shaft; 3. Jig drive system; 31. Moving frame; 32. First guide rail; 33. First drive device; 331. Moving seat; 332. Second drive motor; 333. Hollow reducer; 334. First quick-release chuck; 335. First mounting plate; 34. First drive cylinder; 35. Auxiliary tailstock; 351. Second mounting plate; 352. Tailstock bearing seat; 353. Tailstock bearing; 354. Tailstock shaft; 4. Dual-pulse synchronous drive system; 41. Second guide rail; 42. Second drive cylinder; 43. Second drive device; 4 31. Lifting frame; 432. Third drive motor; 433. First bearing seat; 434. Third bearing; 435. First output shaft; 436. Second quick-release chuck; 44. Tail clamping device; 441. Mounting base; 442. Third drive cylinder; 443. Moving plate; 444. Lifting guide rod; 445. Chuck seat; 446. Third quick-release chuck; 447. Second bearing seat; 448. Fourth bearing; 449. Second output shaft; 4410. Fourth drive motor; 45. Brush; 5. Fixture vibration device; 51. First drive motor; 52. Reducer; 53. Eccentric wheel; 54. First bearing; 55. Swing shaft; 56. Second bearing; 57. Output connecting plate; 58. Frame; 6. Product to be polished. Detailed Implementation

[0052] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0053] like Figures 1-11 As shown, a large-capacity semi-automatic internal hole polishing device includes:

[0054] Work platform 1;

[0055] The fixture oscillation device 5 is installed on the work platform 1, and its output end is connected to a movable frame 31 to drive the movable frame 31 to perform reciprocating oscillation.

[0056] The stacking fixture 2 includes an upper chuck shaft 21, a fixture sleeve 22, a pressure plate 23, and a lower chuck shaft 24. The upper chuck shaft 21 and the lower chuck shaft 24 are respectively fixedly connected to the top and bottom of the fixture sleeve 22 to form a receiving cavity. Several products 6 to be polished are stacked in the receiving cavity. The upper chuck shaft 21 and the lower chuck shaft 24 abut against the products 6 to be polished through the pressure plate 23.

[0057] The fixture drive system 3 is slidably connected to the work platform 1. Under the drive of the fixture oscillation device 5, the fixture drive system 3 oscillates up and down in the vertical direction. The fixture drive system 3 is used to install and connect the upper chuck shaft 21 and the lower chuck shaft 24 and drive the stacked fixture 2 to rotate.

[0058] The dual-pulse synchronous drive system 4 is installed on the work platform 1 and includes a polishing tool, a bidirectional drive mechanism for driving the polishing tool to rotate, and a feed mechanism for avoiding the installation of the polishing tool. The polishing tool passes through the stacked jig 2 to polish the inner hole of the product 6 to be polished in the receiving cavity.

[0059] By designing the stacked jig 2, a large number of thin workpieces can be clamped in the cavity formed by the upper chuck shaft 21, jig sleeve 22, pressure plate 23 and lower chuck shaft 24 for simultaneous processing, thus transforming the production mode from single-piece to efficient batch production and increasing the production capacity by orders of magnitude.

[0060] The workpiece is driven to rotate by the fixture drive system 3, and then driven to reciprocate up and down along the axis of the brush 45 by the fixture oscillation device 5. This motion is combined with the rotation of the brush 45 driven by the dual-pulse synchronous drive system 4, forming a multi-dimensional composite motion in both the axial and circumferential directions. This motion ensures that the polishing trajectory covers the inner surface of the workpiece in a comprehensive and irregular manner, effectively avoiding repeated wear marks caused by single motion. This results in extremely uniform material removal rate and polishing tool wear, significantly improving the consistency of processing quality and extending tool life.

[0061] Both the stacking fixture 2 and the brush 45 adopt quick-clamp interfaces and integrate a cylinder-driven lifting mechanism, making it extremely quick to change product batches and polishing tools, greatly reducing the labor intensity and skill requirements of operators, and improving the stability and automation level of production cycle.

[0062] Furthermore, such as Figure 1 and Figure 2 As shown, the work platform 1 includes a worktable 11, a work frame 12, and a lifting guide rail 13. The work frame 12 is fixedly connected to the worktable 11, and the lifting guide rail 13 is fixedly connected to the work frame 12 in the vertical direction. The fixture oscillation device 5 is fixedly connected to the work frame 12. The fixture drive system 3 is slidably connected to the work frame 12 through the lifting guide rail 13. One part of the bidirectional drive mechanism is fixedly connected to the worktable, and the other part is slidably connected to the work frame 12 through the feed mechanism.

[0063] Furthermore, such as Figures 1 to 3As shown, the jig oscillation device 5 includes a first drive motor 51, a reducer 52, an eccentric wheel 53, a first bearing 54, a swing shaft 55, a second bearing 56, an output connecting plate 57, and a frame 58. The frame 58 is fixedly connected to the work frame 12. The first drive motor 51 is fixedly connected to the frame 58 through the reducer 52. The eccentric wheel 53 is driven by the reducer 52. The eccentric wheel 53 is connected to one end of the swing shaft 55 through the first bearing 54, and the other end of the swing shaft 55 is connected to the output connecting plate 57 through the second bearing 56. The first drive motor 51 drives the eccentric wheel 53 to rotate through the reducer 52, causing the eccentric wheel 53 to drive the swing shaft 55 to swing. The swing of the swing shaft 55 causes the output connecting plate 57 to oscillate up and down.

[0064] like Figures 4-5 As shown, in some embodiments, the jig drive system 3 includes a movable frame 31, a first guide rail 32, a first drive device 33, a first drive cylinder 34, and an auxiliary tailstock 35. The bottom of the output connecting plate 57 is fixedly connected to the top of the movable frame 31. The movable frame 31 is slidably connected to the work frame 12 via a lifting guide rail 13. The first guide rail 32 is fixedly connected to the movable frame 31 in the vertical direction. The first drive device 33 is slidably connected to the movable frame 31 via the first guide rail 32. The first drive cylinder 34 is fixedly connected to the movable frame 31 and is drively connected to the first drive device 33 to drive the first drive device 33 to move up and down along the first guide rail 32. The auxiliary tailstock 35 is fixedly connected to the movable frame 31 and is used to install and connect with the lower chuck shaft 24. The first drive device 33 is used to install and connect with the upper chuck shaft 21 and is used to drive the stacking jig 2 to rotate. The first drive cylinder 34 drives the first drive device 33 to rise along the first guide rail 32, clearing the space required for changing the stacking fixture 2; the lower chuck shaft 24 of the stacking fixture 2 is installed on the auxiliary tailstock 35; the first drive cylinder 34 drives the first drive device 33 to descend along the first guide rail 32, thereby pressing the stacking fixture 2; after pressing, the first drive device 33 clamps the upper chuck shaft 21 of the stacking fixture 2, thereby achieving bidirectional positioning of the shaft and the end face.

[0065] like Figures 4-5As shown, in some embodiments, the first driving device 33 includes a movable base 331, a second driving motor 332, a hollow reducer 333, a first quick-release chuck 334, and a first mounting plate 335. The first driving cylinder 34 is drivenly connected to the movable base 331. The movable base 331 is slidably connected to the movable frame 31 via a first guide rail 32. The second driving motor 332 is fixedly connected to the movable base 331 and is drivenly connected to the hollow reducer 333. The first quick-release chuck 334 is fixedly connected to the movable base 331 via the first mounting plate 335. The hollow reducer 333 is drivenly connected to the first quick-release chuck 334, and the first quick-release chuck 334 is connected to the upper chuck shaft 21.

[0066] The hollow structure of the hollow reducer 333 provides physical space for the polishing brush 45 to pass through, which is a prerequisite for achieving through-polishing.

[0067] The first quick-release chuck 334 enables rapid docking and automatic centering with the upper chuck shaft 21. Combined with the lifting and clamping function of the first drive cylinder 34, it forms a two-way positioning of "shaft (through chuck) - end face (through clamping)," which directly solves the problem of product eccentricity that may exist when stacking large-capacity workpieces. It ensures high coaxiality between the inner hole of all stacked workpieces and the rotating spindle, laying a benchmark for uniform polishing.

[0068] The combination of the second drive motor 332 and the hollow reducer 333 provides a smooth and powerful torque for the fully loaded stacking fixture 2, ensuring stable processing.

[0069] like Figures 4-5 As shown, in some embodiments, the auxiliary tailstock 35 includes a second mounting plate 351, a tailstock bearing seat 352, a tailstock bearing 353, and a tailstock shaft 354. The second mounting plate 351 is fixedly connected to the movable frame 31, the tailstock bearing seat 352 is fixedly connected to the second mounting plate 351, the tailstock shaft 354 is connected to the tailstock bearing seat 352 through the tailstock bearing 353, and the lower chuck shaft 24 is connected to the tailstock shaft 354.

[0070] The auxiliary tailstock 35 supports the lower chuck shaft 24 of the laminating jig 2 via the tailstock shaft 354. The tailstock bearing 353 inside the auxiliary tailstock 355 makes this support a flexible, rotating driven end. The auxiliary tailstock 35 and the active drive end of the first drive device 33 together form a stable "two-end support" system. This not only improves the overall rigidity of the laminating jig 2 under high-speed rotation and oscillation conditions, preventing vibration caused by the overhang of the laminating jig 2, but also ensures that the low-friction characteristics of the tailstock bearing 353 allow the tailstock shaft 354 to smoothly follow the rotation of the active end, avoiding additional stress on the laminating jig 2 caused by excessive resistance of the tailstock shaft 354, thus ensuring smooth rotation.

[0071] like Figures 8-11As shown, in some embodiments, the feeding mechanism includes a second guide rail 41 and a second drive cylinder 42, the bidirectional drive mechanism includes a second drive device 43 and a tail clamping device 44, the polishing tool is a brush 45, the second guide rail 41 is fixedly connected to the second drive device 43 in the vertical direction, the second drive device 43 is slidably connected to the moving frame 31 through the second guide rail 41, the second drive cylinder 42 is fixedly connected to the work frame 12 and is drivenly connected to the second drive device 43, and is used to drive the second drive device 43 to move up and down along the second guide rail 41, the tail clamping device 44 is fixedly connected to the worktable 11, the lower end of the brush 45 is fixedly installed on the tail clamping device 44, the second drive device 43 is used to install and connect with the upper end of the brush 45, the second drive device 43 and the tail clamping device 44 are used to drive the brush 45 to rotate, the brush 45 passes through the upper chuck shaft 21 and the lower chuck shaft 24, and the brush 45 is used to polish the inner hole of the product 6 to be polished in the receiving cavity.

[0072] The second drive device 43 and the tail clamping device 44 of the dual-pulse synchronous drive system 4 clamp, tension and drive the brush 45 simultaneously from the upper and lower ends, respectively, providing solid double-end support for the slender polishing tool, greatly enhancing the rigidity of the system, effectively suppressing the shaking and swaying under high-speed rotation, thereby ensuring the hole diameter accuracy and surface quality of the workpiece.

[0073] like Figure 8 and Figure 11 As shown, in some embodiments, the second driving device 43 includes a lifting frame 431, a third driving motor 432, a first bearing seat 433, a third bearing 434, a first output shaft 435, and a second quick clamp 436. The lifting frame 431 is slidably connected to the moving frame 31 via a second guide rail 41. A through hole is provided at the top of the lifting frame 431. The first bearing seat 433 is fixedly connected to the through hole. The third driving motor 432 is fixedly connected to the first bearing seat 433. The first output shaft 435 is connected to the first bearing seat 433 via the third bearing 434. The third driving motor 432 is drively connected to the first output shaft 435. The first output shaft 435 is fixedly connected to the second quick clamp 436. The second quick clamp 436 is used to fix the upper end of the brush 45. The third driving motor 432 is used to drive the brush 45 to rotate.

[0074] The second drive unit 43 is the upper part of the dual-pulse synchronous drive system 4. The second quick-clamp 436 enables rapid clamping and power transmission of the upper end of the brush 45. More importantly, the second drive unit 43 is driven by the second drive cylinder 42 and can perform large-stroke lifting and lowering along the second guide rail 41. When changing product fixtures, the upper end of the brush 45 can be raised to a height completely away from the working area, providing operators with a wide and unobstructed replacement space, perfectly realizing the functional requirement of long-stroke avoidance, and greatly improving operational convenience and safety.

[0075] like Figure 8 and Figure 10 As shown, in some embodiments, the tail clamping device 44 includes a mounting base 441, a third drive cylinder 442, a moving plate 443, a lifting guide rod 444, a chuck seat 445, a third quick-release chuck 446, a second bearing seat 447, a fourth bearing 448, a second output shaft 449, and a fourth drive motor 4410. The mounting base 441 is fixedly connected to the worktable 11, the third drive cylinder 442 is fixedly connected to the mounting base 441, and the third drive cylinder 442 is drively connected to the moving plate 443. The bottom of the lifting guide rod 444 is fixedly connected to the moving plate 443. The top of 4 is fixedly connected to the chuck seat 445. The lifting guide rod 444 passes through the mounting base 441. The second bearing seat 447 is fixedly connected to the chuck seat 445. The second output shaft 449 is connected to the second bearing seat 447 through the fourth bearing 448. The fourth drive motor 4410 is fixedly connected to the chuck seat 445. The fourth drive motor 4410 is driven by the second output shaft 449. The third quick chuck 446 is fixedly connected to the second output shaft 449. The third quick chuck 446 is used to fix the lower end of the brush 45. The fourth drive motor 4410 is used to drive the brush 45 to rotate.

[0076] The third drive cylinder 442 pushes the entire chuck 445 downward, applying a constant axial tension to the brush 45, thus achieving "pre-tensioning" of the brush 45. This directly and effectively solves the fundamental problem of poor rigidity of polishing materials with ultra-large aspect ratios, allowing the brush 45 to remain straight during high-speed rotation and greatly increasing its anti-vibration capability.

[0077] The fourth drive motor 4410 and the third drive motor 432 at the top form a synchronous drive source, which ensures that the brush 45 has minimal torsional deformation throughout its entire length and synchronizes its rotation speed. This eliminates the torsional lag caused by single-end drive and makes the polishing power transmission more direct and stable.

[0078] like Figure 12 As shown, a method for polishing internal holes using a large-capacity semi-automatic internal hole polishing device includes the following steps:

[0079] Several products 6 to be polished are stacked in the receiving cavity of the stacking fixture 2 and fixed by the pressure plate 23;

[0080] The second drive cylinder 42 drives the second drive device 43 to rise along the second guide rail 41, making way for the space required to replace the stacking fixture 2.

[0081] The first drive cylinder 34 drives the first drive device 33 to rise along the first guide rail 32, making way for the space required to replace the stacking fixture 2.

[0082] The lower chuck shaft 24 of the stacking fixture 2 is installed on the auxiliary tailstock 35;

[0083] The first drive cylinder 34 drives the first drive device 33 to descend along the first guide rail 32 to press the stacked jig 2.

[0084] After clamping, the first drive device 33 clamps the upper chuck shaft 21 of the stacking fixture 2 to achieve bidirectional positioning of the shaft and the end face.

[0085] The second drive cylinder 42 drives the second drive device 43 to descend along the second guide rail 41, thereby achieving the clamping of the brush 45 by the second drive device 43 and the tail clamping device 44.

[0086] The second drive device 43 and the tail clamping device 44 synchronously drive the brush 45 to rotate, and the first drive device 33 drives the stacking fixture 2 to rotate.

[0087] The first drive motor 51 drives the moving frame 31 and the stacking fixture 2 mounted on it to oscillate up and down;

[0088] Through the combined action of the rotation and oscillation of the stacked jig 2 and the rotation of the brush 45, the inner holes of all products 6 to be polished are polished simultaneously.

[0089] The steps of "first raising the brush 45, then raising the jig drive device" define a safe and efficient operating space preparation process.

[0090] By first clamping the fixture and then clamping the upper shaft, the precise bidirectional positioning of the shaft and end face is ensured.

[0091] By taking the step of “finally lowering and tensioning the brush 45”, the tool system is ensured to be in optimal tension before polishing begins.

[0092] Ultimately, by simultaneously starting the jig rotation, jig oscillation, and 45-degree dual-end drive of the brush, the composite motion polishing effect brought by all the aforementioned equipment was systematically and repeatably reproduced, ensuring that each batch of workpieces could stably obtain high-volume, high-uniformity, and high-precision polishing quality.

[0093] The above description is merely a preferred embodiment of the present invention and does not constitute any limitation on the technical scope of the present invention. Therefore, any minor modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention shall still fall within the scope of the technical solution of the present invention.

Claims

1. A high capacity semi-automatic inner hole polishing apparatus, characterized by, include: The work platform includes a workbench, a work frame, and a lifting guide rail. The work frame is fixedly connected to the workbench, and the lifting guide rail is fixedly connected to the work frame in a vertical direction. A fixture oscillation device is fixedly connected to the work frame, and its output end is connected to a movable frame for driving the movable frame to reciprocate oscillation. The fixture oscillation device includes a first drive motor, a reducer, an eccentric wheel, a first bearing, a swing shaft, a second bearing, an output connecting plate, and a frame. The frame is fixedly connected to the work frame. The first drive motor is fixedly connected to the frame through the reducer. The eccentric wheel is driven by the reducer. The eccentric wheel is connected to one end of the swing shaft through the first bearing. The other end of the swing shaft is connected to the output connecting plate through the second bearing. The stacking fixture includes an upper chuck shaft, a fixture sleeve, a pressure plate, and a lower chuck shaft. The upper chuck shaft and the lower chuck shaft are respectively fixedly connected to the top and bottom of the fixture sleeve to form a receiving cavity. Several products to be polished are stacked in the receiving cavity. The upper chuck shaft and the lower chuck shaft abut against the products to be polished through the pressure plate. A fixture driving system is slidably connected to the work frame via the lifting guide rail. Driven by the fixture oscillation device, the fixture driving system oscillates vertically up and down. The fixture driving system is used to install and connect the upper chuck shaft and the lower chuck shaft and drive the stacking fixture to rotate. The fixture driving system includes a movable frame, a first guide rail, a first driving device, a first driving cylinder, and an auxiliary tailstock. The bottom of the output connecting plate is fixedly connected to the top of the movable frame. The movable frame is slidably connected to the work frame via the lifting guide rail. The first guide rail is fixedly connected to the movable frame vertically. The first driving device is slidably connected to the movable frame via the first guide rail. The first driving cylinder is fixedly connected to the movable frame and is drively connected to the first driving device, used to drive the first driving device to move up and down along the first guide rail. The auxiliary tailstock is fixedly connected to the movable frame and is used to install and connect to the lower chuck shaft. The first driving device is used to install and connect to the upper chuck shaft and drive the stacking fixture to rotate. The dual-pulse synchronous drive system includes a polishing tool, a bidirectional drive mechanism for driving the polishing tool to rotate, and a feed mechanism for avoiding the installation of the polishing tool. The polishing tool passes through the stacked jig to polish the inner hole of the product to be polished in the receiving cavity. A part of the bidirectional drive mechanism is fixedly connected to the worktable, and the other part is slidably connected to the work frame through the feed mechanism.

2. The high capacity semi-automatic inner bore polishing apparatus of claim 1, wherein, The first driving device comprises a moving seat, a second driving motor, a hollow speed reducer, a first quick chuck, and a first mounting plate, the first driving cylinder is in transmission connection with the moving seat, the moving seat is in sliding connection with the moving frame through the first guide rail, the second driving motor is fixedly connected to the moving seat, the second driving motor is in transmission connection with the hollow speed reducer, the first quick chuck is fixedly connected to the moving seat through the first mounting plate, the hollow speed reducer is in transmission connection with the first quick chuck, and the first quick chuck is connected with the upper chuck shaft.

3. The apparatus of claim 1 wherein, The auxiliary tail seat comprises a second mounting plate, a tail seat bearing seat, a tail seat bearing, and a tail seat shaft, the second mounting plate is fixedly connected to the moving frame, the tail seat bearing seat is fixedly connected to the second mounting plate, the tail seat shaft is connected to the tail seat bearing seat through the tail seat bearing, and the lower chuck shaft is connected with the tail seat shaft.

4. The apparatus of claim 1 wherein, The feeding mechanism comprises a second guide rail and a second driving cylinder, the bidirectional driving mechanism comprises a second driving device and a tail clamping device, the polishing tool is a brush, the second guide rail is fixedly connected to the second driving device in the vertical direction, the second driving device is in sliding connection with the moving frame through the second guide rail, the second driving cylinder is fixedly connected to the workbench and in transmission connection with the second driving device, and is used for driving the second driving device to move up and down along the second guide rail, the tail clamping device is fixedly connected to the workbench, the lower end of the brush is fixedly installed on the tail clamping device, the second driving device is used for mounting connection with the upper end of the brush, and the second driving device and the tail clamping device are used for driving the brush to rotate, the brush passes through the upper chuck shaft and the lower chuck shaft, and the brush is used for polishing the inner hole of the product to be polished in the containing cavity.

5. The apparatus of claim 4, wherein, The second driving device comprises a lifting frame, a third driving motor, a first bearing seat, a third bearing, a first output shaft, and a second quick chuck, the lifting frame is in sliding connection with the moving frame through the second guide rail, the lifting frame is provided with a through hole at the top, the first bearing seat is fixedly connected to the through hole, the third driving motor is fixedly connected to the first bearing seat, the first output shaft is connected to the first bearing seat through the third bearing, the third driving motor is in transmission connection with the first output shaft, the first output shaft is fixedly connected with the second quick chuck, the second quick chuck is used for fixedly mounting the upper end of the brush, and the third driving motor is used for driving the brush to rotate.

6. The apparatus of claim 4 wherein, The tail clamping device comprises a mounting seat, a third driving cylinder, a moving plate, a lifting guide rod, a chuck seat, a third quick chuck, a second bearing seat, a fourth bearing, a second output shaft and a fourth driving motor, the mounting seat is fixedly connected to the workbench, the third driving cylinder is fixedly connected to the mounting seat, the third driving cylinder is in transmission connection with the moving plate, the bottom of the lifting guide rod is fixedly connected with the moving plate, the top of the lifting guide rod is fixedly connected with the chuck seat, the lifting guide rod passes through the mounting seat, the second bearing seat is fixedly connected to the chuck seat, the second output shaft is connected with the second bearing seat through the fourth bearing, the fourth driving motor is fixedly connected to the chuck seat, the fourth driving motor is in transmission connection with the second output shaft, the third quick chuck is fixedly connected with the second output shaft, the third quick chuck is used for fixing the lower end of the brush, and the fourth driving motor is used for driving the brush to rotate.

7. A method of polishing an inner hole using the large capacity semi-automatic inner hole polishing apparatus according to claim 4, characterized by, The method comprises the following steps: Stacking a plurality of products to be polished in the accommodating cavities of the stack jigs and fixing them through the pressing plates; The second driving cylinder drives the second driving device to ascend along the second guide rail, so as to avoid the space required for replacing the stack jigs; The first driving cylinder drives the first driving device to ascend along the first guide rail, so as to avoid the space required for replacing the stack jigs; The lower chuck shaft of the stack jig is installed in the auxiliary tail seat; The first driving cylinder drives the first driving device to descend along the first guide rail, so as to press the stack jig; After being pressed, the first driving device clamps the upper chuck shaft of the stack jig, so as to realize the bidirectional positioning of the shaft and the end face; The second driving cylinder drives the second driving device to descend along the second guide rail, so as to realize the pressing of the second driving device and the tail clamping device on the brush; The second driving device and the tail clamping device synchronously drive the brush to rotate, and the first driving device drives the stack jig to rotate; The first driving motor drives the moving frame and the stack jig installed thereon to reciprocate up and down; Through the rotation and oscillation of the stack jig and the rotation of the brush, all the inner holes of the products to be polished are simultaneously polished.

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