Double station cylindrical polishing apparatus

Abstract

The utility model relates to a polishing equipment technical field, concretely relates to a double -position external circle polishing equipment, include: work frame, laminated piece frock, oscillating device, double frock clamping device, double polishing roll device, oscillating device includes: driving motor, speed reducer, eccentric wheel, first bearing, swing plate, second bearing, output connecting plate, frame, the top of double frock clamping device and output connecting plate fixed connection, double frock clamping device and work frame vertical sliding connection, double frock clamping device are used for clamping two laminated piece frocks, and two laminated piece frocks are parallel along the vertical work frame direction, double polishing roll device includes: first polishing roll module and second polishing roll module, first polishing roll module and second polishing roll module set up respectively in double frock clamping device both sides, first polishing roll module and second polishing roll module all are transverse sliding connection in work frame, are used for polishing respectively from two sides to two laminated piece frock stacked multiple products to be processed.

Description

Technical Field

[0001] This utility model relates to the field of polishing equipment technology, specifically to a dual-station external cylindrical polishing equipment. Background Technology

[0002] External cylindrical polishing, as a key process in surface treatment, is widely used in the final processing of materials such as glass, ceramics, sapphire, semiconductor-grade brittle materials, and metals to improve the surface finish, roundness, and consistency of workpieces and meet their performance requirements.

[0003] In existing technologies, the following two methods are typically used for batch polishing of the outer diameter of materials such as glass, ceramics, sapphire, semiconductor-grade brittle materials, and metals:

[0004] Single-station, single-piece polishing equipment: This type of equipment can only clamp one workpiece at a time for polishing. Although the polishing quality is controllable, the production efficiency is extremely low, and the clamping and auxiliary time is long, which cannot meet the needs of large-scale mass production and has become a major bottleneck for capacity improvement.

[0005] Single-station multi-piece tandem polishing equipment: To improve efficiency, equipment has emerged that can polish multiple workpieces in series on a single mandrel. While this method reduces the number of setups, it still has significant drawbacks:

[0006] Poor polishing uniformity: The polishing roller is usually located on one side of the workpiece for unidirectional polishing. The polishing force can easily cause slight deformation of the slender mandrel, and it is impossible to ensure that the polishing pressure on each part of the series workpiece is consistent, making it difficult to control the roundness and dimensional consistency of the entire batch of workpieces.

[0007] It is easy to produce fixed patterns: When the workpiece rotates at a fixed speed, the contact path between the polishing roller and the workpiece surface is repeated, which can easily form regular polishing patterns on the product surface, and even insufficient polishing of edges and other parts, affecting the surface quality. Utility Model Content

[0008] To address the shortcomings of existing technologies, this utility model provides a dual-station external cylindrical polishing device, aiming to solve the problem that existing external cylindrical polishing devices cannot guarantee both high efficiency and high consistency in polishing quality.

[0009] To achieve the above objectives, the present invention adopts the following technical solution:

[0010] A dual-station external cylindrical polishing device includes:

[0011] Work rack;

[0012] Stacking fixtures are used to stack multiple products to be processed.

[0013] An oscillation device includes: a drive motor, a reducer, an eccentric wheel, a first bearing, a swing plate, a second bearing, an output connection plate, and a frame. The frame is fixedly connected to the work frame. The drive motor is fixedly connected to the frame via the reducer. The eccentric wheel is driven by the reducer. The eccentric wheel is connected to one end of the swing plate via the first bearing, and the other end of the eccentric wheel is connected to the output connection plate via the second bearing.

[0014] A double-tool clamping device, the top of which is fixedly connected to the output connecting plate, and the double-tool clamping device is vertically slidably connected to the work frame. The double-tool clamping device is used to clamp two stacked toolings, and the two stacked toolings are arranged side by side along the direction perpendicular to the work frame.

[0015] The dual polishing roller device includes a first polishing roller module and a second polishing roller module. The first polishing roller module and the second polishing roller module are respectively disposed on both sides of the dual tooling clamping device. The first polishing roller module and the second polishing roller module are both laterally slidably connected to the work frame. The first polishing roller module and the second polishing roller module are used to polish the plurality of products to be processed stacked on the two stacked toolings from both sides.

[0016] Furthermore, the dual-tool clamping device includes: a mounting frame, quick-release chucks, drive units, a rotating tailstock, and drive cylinders. The mounting frame includes a movable plate and a top frame and a base frame respectively mounted on the upper and lower parts of the movable plate. The movable plate is vertically slidably connected to the work frame. The output connecting plate is fixedly connected to the top of the movable plate. Two drive units are mounted side-by-side on the base frame perpendicular to the movable plate. Two quick-release chucks are respectively driven to the two drive units. Two drive cylinders are mounted side-by-side on the top frame perpendicular to the movable plate. Two rotating tailstocks are respectively driven to the two drive cylinders. The drive cylinders are used to drive the rotating tailstocks downward to press one end of the stacked tooling. The quick-release chucks are used to tighten the other end of the stacked tooling, completing the clamping and pre-pressing of the stacked tooling.

[0017] Furthermore, both the first polishing roller module and the second polishing roller module include: a transverse guide rail, a transverse drive cylinder, a polishing roller frame, a polishing roller, and a polishing roller rotation drive motor. The transverse guide rail is fixedly connected to the work frame, the polishing roller frame is slidably connected to the transverse guide rail, the transverse drive cylinder is fixedly connected to the work frame, and the transverse drive cylinder is drivenly connected to the polishing roller frame for driving the polishing roller frame to move laterally. The polishing roller and the polishing roller rotation drive motor are mounted on the polishing roller frame, and the polishing roller rotation drive motor is drivenly connected to the polishing roller for driving the polishing roller to rotate.

[0018] Furthermore, the polishing roller frame includes a transverse moving plate, a movable top frame, a fixed base frame, and a lifting cylinder. The lifting cylinder is fixedly connected to the top of the transverse moving plate, the fixed base frame is vertically slidably connected to the transverse moving plate, and the fixed base frame is fixedly connected to the lower part of the transverse moving plate. The movable top frame is provided with a polishing roller rotating tailstock, and the fixed base frame is provided with a polishing roller mounting seat. The polishing roller rotation drive motor is fixedly connected to the fixed base frame. The lifting cylinder is driven by the movable top frame. The bottom of the polishing roller is installed on the polishing roller mounting seat. The lifting cylinder is used to drive the movable top frame downward so that the polishing roller rotating tailstock presses against the top of the polishing roller, thus completing the installation of the polishing roller.

[0019] Furthermore, the polishing roller mounting base is provided with four circumferentially distributed pins, which are engaged with the bottom of the polishing roller. The four pins are used to transmit torque to the polishing roller. The polishing roller rotation drive motor transmits torque and rotational motion to the polishing roller mounting base through a belt.

[0020] Furthermore, the stacking fixture includes: a stacking mandrel, a first pressure block, a second pressure block, and a locking nut. The first pressure block and the second pressure block are respectively sleeved on both ends of the stacking mandrel. A plurality of products to be processed are stacked and sleeved on the stacking mandrel between the first pressure block and the second pressure block. The locking nut is used for threaded connection of the stacking mandrel and abuts against one side of the first pressure block so that the first pressure block and the second pressure block cooperate to lock the products to be processed.

[0021] The beneficial effects of the dual-station external cylindrical polishing equipment described in this utility model are as follows:

[0022] (1) Significantly improves production efficiency:

[0023] By incorporating a dual-fixture clamping device and a dual-polishing roller device, true dual-station synchronous operation is achieved. The equipment can simultaneously clamp two stacked fixtures (each fixture containing multiple products) and polish them from both sides at the same time. Compared with traditional single-station equipment, this significantly improves production efficiency and greatly meets the cycle time requirements of mass production.

[0024] (2) Fundamentally improves polishing quality and consistency:

[0025] Double-sided polishing: The first and second polishing roller modules apply polishing force simultaneously from both sides of the product, creating a force balance that effectively counteracts workpiece or tooling deformation that may occur with unidirectional polishing, ensuring the roundness and dimensional consistency of the product, especially precision parts. Both the first and second polishing roller modules can move laterally, allowing them to actively and controllably feed towards the workpiece at the center, achieving precise radial feed and pressure control to adapt to the pressure requirements of different materials and polishing stages. During polishing, the polishing belt or abrasive cloth gradually wears down; the lateral movement of the first and second polishing roller modules can compensate in real time or intermittently, ensuring pressure stability throughout the polishing cycle and thus guaranteeing consistent batch quality. The distance between the first and second polishing roller modules can be easily adjusted to accommodate polishing products of different diameters, enhancing the equipment's versatility and flexibility.

[0026] Superimposed oscillating motion: The oscillation mechanism converts the rotational motion of the drive motor into a stable and reliable vertical reciprocating linear motion of the output connecting plate through an eccentric wheel and bearing assembly. This motion is directly transmitted to the entire double-tool clamping device and all the products being polished on it. The products rotate while simultaneously experiencing superimposed up-and-down oscillations, causing the contact point between the polishing roller and the product surface to continuously and irregularly change. This completely avoids the fixed, repetitive scratches caused by unidirectional rotational polishing, resulting in a surface with irregular textures, superior gloss, and a better feel. For multiple products connected in series on the stacked tooling, the oscillating motion ensures that the end faces, edges, and seams of each product are effectively polished, solving the problem of insufficient polishing caused by uneven contact pressure in these areas. The use of a first and second bearing connection reduces friction and impact between moving parts, resulting in a smooth oscillation process with low noise and a long lifespan. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of the dual-station external cylindrical polishing equipment according to an embodiment of the present invention;

[0028] Figure 2 This is a schematic diagram of the structure of the oscillation device and the double-tool clamping device according to an embodiment of the present invention;

[0029] Figure 3 This is a schematic diagram of the stacking tooling according to an embodiment of the present utility model;

[0030] Figure 4 This is a schematic diagram of the stacking tooling and the product to be processed according to an embodiment of this utility model;

[0031] Figure 5 This is a first-view structural schematic diagram of the first polishing roller module according to an embodiment of the present utility model;

[0032] Figure 6 This is a second-view structural schematic diagram of the first polishing roller module in an embodiment of this utility model.

[0033] Explanation of reference numerals in the attached figures:

[0034] 1. Work frame; 2. Stacking fixture; 21. Stacking mandrel; 22. First pressure block; 23. Second pressure block; 24. Locking nut; 3. Vibration device; 31. Drive motor; 32. Reducer; 33. Eccentric wheel; 34. First bearing; 35. Swing plate; 36. Second bearing; 37. Output connection plate; 38. Frame; 4. Double fixture clamping device; 41. Mounting frame; 411. Moving plate; 412. Top frame; 413. Base frame; 42. Quick-release chuck; 43. Drive device; 44. Rotating tailstock; 45. Drive cylinder; 5. Double polishing roller device; 51. First polishing roller module; 52. Second polishing roller module; 53. Transverse guide rail; 54. Transverse drive cylinder; 55. Polishing roller frame; 551. Transverse moving plate; 552. Moving top frame; 553. Fixed base frame; 554. Lifting cylinder; 555. Polishing roller rotating tailstock; 556. Polishing roller mounting base; 56. Polishing roller; 57. Polishing roller rotation drive motor; 58. Belt; 6. Product to be processed. Detailed Implementation

[0035] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0036] like Figures 1 to 6 As shown, this application discloses a dual-station external cylindrical polishing device, comprising:

[0037] Work rack 1;

[0038] Stacking fixture 2, used to stack multiple products to be processed 6;

[0039] The oscillation device 3 includes: a drive motor 31, a reducer 32, an eccentric wheel 33, a first bearing 34, a swing plate 35, a second bearing 36, an output connection plate 37, and a frame 38. The frame 38 is fixedly connected to the work frame 1. The drive motor 31 is fixedly connected to the frame 38 through the reducer 32. The eccentric wheel 33 is connected to the reducer 32 through a transmission connection. The eccentric wheel 33 is connected to one end of the swing plate 35 through the first bearing 34, and the other end of the eccentric wheel 33 is connected to the output connection plate 37 through the second bearing 36.

[0040] The top of the double tooling clamping device 4 is fixedly connected to the output connecting plate 37. The double tooling clamping device 4 is vertically slidably connected to the work frame 1. The double tooling clamping device 4 is used to clamp two stacked tooling 2, and the two stacked tooling 2 are arranged side by side along the direction perpendicular to the work frame 1.

[0041] The dual polishing roller 56 device includes a first polishing roller 56 module and a second polishing roller 56 module. The first polishing roller 56 module and the second polishing roller 56 module are respectively disposed on both sides of the dual tooling clamping device 4. The first polishing roller 56 module and the second polishing roller 56 module are both laterally slidably connected to the work frame 1. The first polishing roller 56 module and the second polishing roller 56 module are used to polish multiple products 6 to be processed stacked on the two stacked tooling 2 from both sides.

[0042] By incorporating a dual-tool clamping device 4 and a dual-polishing roller device 56, true dual-station synchronous operation is achieved. The equipment can simultaneously clamp two stacked toolings 2 (each tooling containing multiple products) and polish them from both sides simultaneously. Compared with traditional single-station equipment, this significantly improves production efficiency and greatly meets the cycle time requirements of mass production.

[0043] Double-sided polishing: The first and second polishing roller modules 56 apply polishing force simultaneously from both sides of the product, creating a force balance that effectively counteracts workpiece or tooling deformation that may occur with unidirectional polishing, ensuring the roundness and dimensional consistency of the product, especially precision parts. Both the first and second polishing roller modules 56 can move laterally, allowing them to actively and controllably feed towards the workpiece at the center, achieving precise radial feed and pressure control to adapt to the pressure requirements of different materials and polishing stages. During the polishing process, the polishing belt or abrasive cloth will gradually wear down; the lateral movement of the first and second polishing roller modules 56 can compensate in real time or intermittently, ensuring pressure stability throughout the polishing cycle and thus guaranteeing consistent batch quality. The distance between the first and second polishing roller modules 56 can be easily adjusted to accommodate polishing products of different diameters, enhancing the equipment's versatility and flexibility.

[0044] Superimposed oscillating motion: The oscillation mechanism converts the rotational motion of the drive motor 31 into a stable and reliable vertical reciprocating linear motion of the output connecting plate 37 through the eccentric wheel 33 and bearing assembly. This motion is directly transmitted to the entire double-tool clamping device 4 and all the products being polished on it. The products rotate while being superimposed with up-and-down oscillations, causing the contact point between the polishing roller 56 and the product surface to change continuously and irregularly. This completely avoids the fixed and repetitive scratches caused by unidirectional rotational polishing, resulting in a surface with irregular textures, superior gloss, and better quality. For multiple products 6 connected in series on the stacked tooling 2, the oscillation motion ensures that the end faces, edges, and seam areas between each product 6 are effectively polished, solving the problem of insufficient polishing caused by uneven contact pressure in these areas. The connection method using the first bearing 34 and the second bearing 36 reduces friction and impact between moving parts, resulting in a smooth oscillation process with low noise and long service life.

[0045] like Figure 2 As shown, the dual-tool clamping device 4 includes: a mounting frame 41, quick-release chucks 42, a drive unit 43, a rotating tailstock 44, and a drive cylinder 45. The mounting frame 41 includes a movable plate 411, and a top frame 412 and a base frame 413 respectively mounted on the upper and lower parts of the movable plate 411. The movable plate 411 is vertically slidably connected to the work frame 1. The output connecting plate 37 is fixedly connected to the top of the movable plate 411. Two drive units 43 are mounted side by side on the base frame 413 in a direction perpendicular to the movable plate 411. Two quick-release chucks 42 are respectively driven and connected to the two drive units 43. Two drive cylinders 45 are mounted side by side on the top frame 412 in a direction perpendicular to the movable plate 411. Two rotating tailstocks 44 are respectively driven and connected to the two drive cylinders 45. The drive cylinders 45 are used to drive the rotating tailstocks 44 downward to press one end of the stacked tooling 2. The quick-release chucks 42 are used to tighten the other end of the stacked tooling 2, thus completing the clamping and pre-pressing of the stacked tooling 2.

[0046] The specifications clearly stipulate that the two drive devices 43 and two drive cylinders 45 are installed in parallel and connected to two quick-release chucks 42 and two rotating tailstocks 44 respectively. This ensures that the equipment can simultaneously, independently, and synchronously clamp and release the two stacked fixtures 2. This completely solves the efficiency bottleneck of traditional equipment that can only process one fixture at a time. Halving the clamping auxiliary time and achieving a production cycle that matches the subsequent dual polishing station is a key factor in improving the overall equipment efficiency. The specifications also specify the coordinated action of the drive cylinders 45 driving the rotating tailstocks 44 to press down on one end of the fixture, while the quick-release chucks 42 tighten the other end.

[0047] The rotating tailstock 44 provides stable axial preload, ensuring the tooling does not move axially during polishing and offsetting some of the axial force generated by the oscillation device 3. The quick-release chuck 42 provides strong radial clamping force, ensuring a tight connection between the stacked tooling 2 (and all products on it) and the drive device 43, effectively transmitting rotational torque and preventing slippage. This two-end coordinating clamping method forms a stable "push-pull" mechanical structure, overcoming the problems of insufficient positioning accuracy or clamping force that may exist with single chuck clamping, providing a solid clamping foundation for high-precision, high-strength polishing.

[0048] The drive cylinder 45 and the rotating tailstock 44 are placed on the top frame 412, while the drive device 43 and the quick-release chuck 42 are placed on the base frame 413. This layout conforms to the force logic of the equipment (upper end clamping, lower end driving), resulting in a compact structure and stable center of gravity. The moving plate 411 serves as the foundation of the entire mounting frame 41, both vertically slidingly connected to the work frame 1 to transmit oscillating motion and fixedly connected at its top to the output connection plate 37 of the oscillation device 3. This ensures that the oscillating power can be transmitted smoothly and without damage to the entire clamping device and the workpiece. It avoids vibration, deformation, or interference problems that may be caused by unreasonable layout, ensuring the structural rigidity and stability of the equipment under long-term high-speed oscillation operation.

[0049] The use of automated components such as the drive cylinder 45 and quick-release chuck 42, whose actions are controlled by programs or sensors, results in high speed and high repeatability. This replaces traditional manual wrench tightening operations, significantly reducing clamping time, lowering the physical and skill requirements for operators, and eliminating inconsistent clamping force caused by human factors, thus ensuring product quality stability.

[0050] The clamping systems at the two workstations are parallel and independent. If one workstation malfunctions, it can be repaired and maintained independently without affecting the normal operation of the other workstation (where equipment permits) or its complete disassembly. This improves equipment maintainability and reduces downtime. Furthermore, this modular design facilitates future upgrades or modifications.

[0051] The drive cylinder 45 drives the rotating tailstock 44 to press down, and the quick-release chuck 42 tightens, achieving automatic centering and clamping of both ends of the stacked fixture 2. This not only ensures fast clamping speed and shortens auxiliary time, but also provides uniform and reliable clamping force, ensuring the rigidity and stability of the entire fixture system during polishing, thus providing a prerequisite for high-quality polishing. After polishing the product 6 to be processed, the drive cylinder 45 drives the rotating tailstock 44 to rise, causing the rotating tailstock 44 to disengage from the top of the stacked fixture 2. The operator or the robotic arm of the unloading equipment can then remove the stacked fixture 2 from the quick-release chuck 42 for unloading. The drive unit 43 is placed on the base frame 413, and the drive cylinder 45 is placed on the top frame 412. This layout ensures even power distribution, a compact structure, and facilitates equipment debugging and maintenance.

[0052] like Figure 5 As shown, both the first polishing roller 56 module and the second polishing roller 56 module include: a transverse guide rail 53, a transverse drive cylinder 54, a polishing roller frame 55, a polishing roller 56, and a polishing roller rotation drive motor 57. The transverse guide rail 53 is fixedly connected to the work frame 1, the polishing roller frame 55 is slidably connected to the transverse guide rail 53, the transverse drive cylinder 54 is fixedly connected to the work frame 1, and the transverse drive cylinder 54 is driven to the polishing roller frame 55 to drive the polishing roller frame 55 to move laterally. The polishing roller 56 and the polishing roller rotation drive motor 57 are mounted on the polishing roller frame 55, and the polishing roller rotation drive motor 57 is driven to the polishing roller 56 to drive the polishing roller 56 to rotate.

[0053] The combination of the transverse guide rail 53 and the transverse drive cylinder 54 allows for precise control of the radial feed amount and pressure of the polishing roller 56 towards the product 6 to be processed. After processing, during unloading, the first polishing roller module 56 and the second polishing roller module 56 move away from the double-tooling clamping device 4, clearing the working space. This pneumatic or servo control method is more stable and repeatable than manual adjustment, ensuring consistent parameters for each polishing operation and thus guaranteeing the quality stability between product batches. The polishing roller frame 55 can slide laterally, allowing the polishing spacing to be flexibly adjusted according to products of different diameters, enhancing the equipment's process adaptability and versatility.

[0054] like Figure 5As shown, the polishing roller frame 55 includes a transverse moving plate 551, a movable top frame 552, a fixed base frame 553, and a lifting cylinder 554. The lifting cylinder 554 is fixedly connected to the top of the transverse moving plate 551. The fixed base frame 553 is vertically slidably connected to the transverse moving plate 551 and fixedly connected to the lower part of the transverse moving plate 551. The movable top frame 552 is provided with a polishing roller rotating tailstock 555. The fixed base frame 553 is provided with a polishing roller mounting seat 556. The polishing roller rotation drive motor 57 is fixedly connected to the fixed base frame 553. The lifting cylinder 554 is connected to the movable top frame 552 for transmission. The bottom of the polishing roller 56 is installed on the polishing roller mounting seat 556. The lifting cylinder 554 is used to drive the movable top frame 552 downward so that the polishing roller rotating tailstock 555 presses against the top of the polishing roller 56, thus completing the installation of the polishing roller 56.

[0055] The lifting cylinder 554 controls the raising and lowering of the moving top frame 552 and the polishing roller rotating tailstock 555, making the installation and removal of the polishing roller 56 very simple. During replacement, simply raise the top frame 412 to remove the polishing roller 56 from its mounting base, and vice versa. This significantly reduces the time required to replace the polishing roller 56 (e.g., due to wear or changing to a different grit of abrasive cloth), reduces labor intensity, and improves equipment utilization. This "top-pressing, bottom-pulling" installation method ensures the rigidity and dynamic stability of the polishing roller 56 during high-speed rotation, reducing vibration and thus indirectly improving polishing quality.

[0056] like Figure 6 As shown, the polishing roller mounting base 556 is provided with four circumferentially distributed pins, which are engaged with the bottom of the polishing roller 56. The four pins are used to transmit torque to the polishing roller 56. The polishing roller rotation drive motor 57 transmits torque and rotational motion to the polishing roller mounting base 556 through the belt 58.

[0057] The four circumferentially distributed pins are used to connect to the bottom of the polishing roller 56. This is a rigid or semi-rigid torque transmission method that provides stable and reliable torque transmission and prevents slippage.

[0058] Compared to methods that rely solely on friction (such as directly dragging the rollers via belt 58) or a single key connection, the four-pin structure provides multiple, evenly distributed force points, enabling the transmission of greater torque without slippage. This is crucial for high-load, long-duration polishing processes, ensuring the stability of the polishing roller 56's rotational speed and thus guaranteeing consistent polishing results.

[0059] This "clamp-in" connection is an axially interlocking structure, which perfectly matches the "pressing" structure of the lifting cylinder 554 in the preceding claim. When replacing the polishing roller 56, the operator simply aligns the corresponding slot (or gap) at the bottom of the polishing roller 56 with the four pins, lowers it, and then activates the lifting cylinder 554 to press it down to complete the installation. The entire process eliminates the need for tedious steps such as tightening screws and aligning keyways, achieving a "quick change" function. This significantly reduces downtime caused by changing polishing rollers 56 of different grit sizes or for maintenance, making it particularly suitable for production lines that require frequent process changes.

[0060] Four evenly distributed pins around the circumference form a stable support and force transmission plane. This distributes the driving torque evenly across the entire circumference of the polishing roller 56 base, avoiding stress concentration problems that may occur with single-key connections and reducing the risk of damage to the connection parts due to long-term alternating torque.

[0061] The four pins work together to ensure the stability of the rotation center, reduce radial runout and vibration during high-speed rotation, thereby improving polishing accuracy and equipment lifespan.

[0062] The power is clearly transmitted from the motor to the polishing roller mounting base 556 via a belt 58 (such as a synchronous belt or V-belt). The belt drive 58 is a flexible drive that can absorb the impact and vibration generated when the motor starts, stops, and the load changes, making the polishing process smoother, helping to obtain a more uniform surface quality, and protecting the motor and transmission system.

[0063] The belt drive 58 does not require strict alignment between the motor shaft and the polishing roller mounting base 556. This provides greater flexibility to the internal layout of the equipment frame 38, allowing the motor to be installed in a more suitable position. The final output speed can also be easily changed by adjusting the size of the belt pulley 58 to adapt to different process requirements.

[0064] like Figure 3 and Figure 4 As shown, the stacking fixture 2 includes: a stacking mandrel 21, a first pressing block 22, a second pressing block 23, and a locking nut 24. The first pressing block 22 and the second pressing block 23 are respectively sleeved on both ends of the stacking mandrel 21. A number of products 6 to be processed are stacked and sleeved on the stacking mandrel 21 between the first pressing block 22 and the second pressing block 23. The locking nut 24 is used for threaded connection of the stacking mandrel 21 and abuts against one side of the first pressing block 22 so that the first pressing block 22 and the second pressing block 23 cooperate to lock the products 6 to be processed.

[0065] The stacking fixture 2, through a mandrel, pressure block, and locking nut 24, can connect and fix multiple products 6 to be processed into a whole. The positioning of all workpieces can be completed in one clamping. Compared with clamping a single workpiece, the auxiliary time is reduced by an order of magnitude, and the clamping efficiency is revolutionaryly improved.

[0066] All workpieces are mounted on the same high-precision stacked mandrel 21, ensuring they have a unified rotational datum. This is crucial for ensuring dimensional consistency and geometric tolerances of the entire batch of workpieces after polishing, and solves the datum error problem that may exist when clamping individual workpieces.

[0067] The shaft diameter of the stacking mandrel 21 has the same basic size as the inner hole of the product 6 to be processed. A fine clearance fit is used to ensure that each product 6 to be processed has good coaxiality when stacking. This is the basis for the consistent size and roundness of the outer circle of the product after polishing. When stacking the products 6 to be processed, the first pressure block 22 and the second pressure block 23 are placed at the beginning and end, respectively. The purpose is to increase the force-bearing area of ​​the products 6 to be processed and prevent abnormalities such as cracking that may occur during the locking process. After stacking to the target number (or height), the products are locked with the locking nut 24 to prevent the products from shifting or falling during the subsequent handling process. After the stacking is complete, the stacking fixture 2 is formed. The exposed shafts at both ends of the stacking mandrel 21 have a clamping function. This allows the stacking fixture 2 to be replaced as a whole, that is, a large number of products 6 to be processed can be quickly replaced.

[0068] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the technical scope of the present utility model. Therefore, any minor modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A dual-station external cylindrical polishing device, characterized in that, include: Work rack (1); Stacking fixture (2) is used to stack multiple products to be processed (6); The oscillation device (3) includes: a drive motor (31), a reducer (32), an eccentric wheel (33), a first bearing (34), a swing plate (35), a second bearing (36), an output connection plate (37), and a frame (38). The frame (38) is fixedly connected to the work frame (1). The drive motor (31) is fixedly connected to the frame (38) through the reducer (32). The eccentric wheel (33) is driven by the reducer (32). The eccentric wheel (33) is connected to one end of the swing plate (35) through the first bearing (34). The other end of the eccentric wheel (33) is connected to the output connection plate (37) through the second bearing (36). A double tooling clamping device (4) is provided, the top of which is fixedly connected to the output connecting plate (37). The double tooling clamping device (4) is vertically slidably connected to the work frame (1). The double tooling clamping device (4) is used to clamp two stacked toolings (2), and the two stacked toolings (2) are arranged side by side in a direction perpendicular to the work frame (1). The dual polishing roller device (5) includes a first polishing roller module (51) and a second polishing roller module (52). The first polishing roller module (51) and the second polishing roller module (52) are respectively disposed on both sides of the dual tooling clamping device (4). The first polishing roller module (51) and the second polishing roller module (52) are both laterally slidably connected to the work frame (1). The first polishing roller module (51) and the second polishing roller module (52) are used to polish the plurality of products to be processed (6) stacked on the two stacked toolings (2) from both sides respectively.

2. The dual-station external cylindrical polishing equipment according to claim 1, characterized in that, The dual-tool clamping device (4) includes: a mounting frame (41), a quick-release chuck (42), a drive unit (43), a rotating tailstock (44), and a drive cylinder (45). The mounting frame (41) includes a movable plate (411) and a top frame (412) and a bottom frame (413) respectively installed on the upper and lower parts of the movable plate (411). The movable plate (411) is vertically slidably connected to the work frame (1). The output connecting plate (37) is fixedly connected to the top of the movable plate (411). The two drive units (43) are arranged side by side in a direction perpendicular to the movable plate (411). Mounted on the base frame (413), the two quick-release chucks (42) are respectively driven to the two drive devices (43), the two drive cylinders (45) are mounted side by side on the top frame (412) in a direction perpendicular to the moving plate (411), and the two rotating tailstocks (44) are respectively driven to the two drive cylinders (45). The drive cylinders (45) are used to drive the rotating tailstocks (44) downward to press one end of the stacking fixture (2), and the quick-release chucks (42) are used to tighten the other end of the stacking fixture (2) to complete the clamping and pre-pressing of the stacking fixture (2).

3. The dual-station external cylindrical polishing equipment according to claim 1, characterized in that, Both the first polishing roller module (51) and the second polishing roller module (52) include: a transverse guide rail (53), a transverse drive cylinder (54), a polishing roller frame (55), a polishing roller (56), and a polishing roller rotation drive motor (31). The transverse guide rail (53) is fixedly connected to the work frame (1), and the polishing roller frame (55) is slidably connected to the transverse guide rail (53). The transverse drive cylinder (54) is fixedly connected to the work frame (1) and is driven by the polishing roller frame (55) to drive the polishing roller frame (55) to move laterally. The polishing roller (56) and the polishing roller rotation drive motor (31) are mounted on the polishing roller frame (55) and are driven by the polishing roller (56) to drive the polishing roller (56) to rotate.

4. The dual-station external cylindrical polishing equipment according to claim 3, characterized in that, The polishing roller frame (55) includes a transverse moving plate (551), a movable top frame (552), a fixed base frame (553), and a lifting cylinder (554). The lifting cylinder (554) is fixedly connected to the top of the transverse moving plate (551). The fixed base frame (553) is vertically slidably connected to the transverse moving plate (551) and fixedly connected to the lower part of the transverse moving plate (551). The movable top frame (552) is provided with a polishing roller rotating tailstock (555). The fixed base frame (554) is fixedly connected to the lower part of the transverse moving plate (551). 53) A polishing roller mounting base (556) is provided. The polishing roller rotation drive motor (31) is fixedly connected to the fixed base frame (553). The lifting cylinder (554) is connected to the moving top frame (552) for transmission. The bottom of the polishing roller (56) is installed on the polishing roller mounting base (556). The lifting cylinder (554) is used to drive the moving top frame (552) downward to make the polishing roller rotation tail seat (555) press against the top of the polishing roller (56) to complete the installation of the polishing roller (56).

5. The dual-station external cylindrical polishing equipment according to claim 4, characterized in that, The polishing roller mounting base (556) is provided with four circumferentially distributed pins, which are engaged with the bottom of the polishing roller (56). The four pins are used to transmit torque to the polishing roller (56). The polishing roller rotation drive motor (31) transmits torque and rotational motion to the polishing roller mounting base (556) through the belt (58).

6. The dual-station external cylindrical polishing equipment according to claim 1, characterized in that, The stacking fixture (2) includes: a stacking mandrel (21), a first pressure block (22), a second pressure block (23), and a locking nut (24). The first pressure block (22) and the second pressure block (23) are respectively sleeved on both ends of the stacking mandrel (21). A plurality of products to be processed (6) are stacked and sleeved on the stacking mandrel (21) between the first pressure block (22) and the second pressure block (23). The locking nut (24) is used for threaded connection of the stacking mandrel (21) and abuts against one side of the first pressure block (22) so that the first pressure block (22) and the second pressure block (23) cooperate to lock the products to be processed (6).

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