A surface grinding device for dust-free drag chain production

Abstract

This invention provides a surface grinding device for cleanroom cable chain production, belonging to the field of cable chain manufacturing and processing. It includes a base with a U-shaped enclosure on top, within which the cable chain to be ground is located. One end of the cable chain to be ground consists of a cylindrical rotating protrusion and a coaxial fixed shaft, the outer diameter of which is smaller than the outer diameter of the cylindrical rotating protrusion. This invention features a rotating groove grinding section that works in conjunction with a cylindrical grinding section, enabling simultaneous grinding of six key hinged surfaces—the outer wall of the cylindrical rotating protrusion, the end face of the cylindrical rotating protrusion, the outer wall of the fixed shaft, the inner wall of the rotating groove end, the inner wall of the arc-shaped wall, and the inner wall of the rotating hole—in a single clamping operation. This replaces the traditional multi-equipment, multi-process, multi-stage processing method, effectively eliminating multiple clamping and positioning errors, significantly improving the coaxiality and roundness accuracy of each mating surface, resulting in uniform hinged rotation gaps in the cable chain, smooth operation, and extremely low frictional dust generation, fully meeting the requirements for cleanroom use.

Description

Technical Field

[0001] This invention relates to the field of cable chain production and processing, and more specifically, to a surface grinding device for dust-free cable chain production. Background Technology

[0002] Cleanroom cable chains are widely used in high-precision, low-dust applications such as cleanrooms, precision automated equipment, and semiconductor manufacturing equipment. Cleanroom cable chains are assembled from multiple cable chain sections that are hinged together at both ends. The machining accuracy of the hinged joints directly determines the smoothness of the cable chain's operation, its wear resistance, and the amount of dust generated.

[0003] In the prior art, referring to Figure 1 and Figure 7 One end of each cable chain unit has a cylindrical rotating protrusion and a fixed shaft coaxially arranged with the cylindrical rotating protrusion. The outer diameter of the fixed shaft is smaller than the outer diameter of the cylindrical rotating protrusion. The other end of the cable chain unit has a rotating groove that matches the cylindrical rotating protrusion. The rotating groove has an arc-shaped wall structure, and the inner diameter of the arc-shaped wall is the same as the outer diameter of the cylindrical rotating protrusion. The inner wall of the rotating groove has a rotating hole corresponding to the fixed shaft. When the cable chain is assembled and used, the cylindrical rotating protrusion and fixed shaft of the previous cable chain section are rotatably fitted into the rotating groove and rotating hole of the next cable chain section, realizing the hinged rotation of multiple cable chain sections.

[0004] To ensure smooth, seamless rotation of the cable chain hinges and low dust generation due to friction, precision grinding is required on multiple mating surfaces of the cable chain. These include the outer wall of the cylindrical rotating protrusion, the end face of the cylindrical rotating protrusion, the outer wall of the fixed shaft, the inner wall of the rotating groove end, the inner wall of the arc-shaped wall, and the inner wall of the rotating hole. However, traditional grinding equipment can only grind a single part, requiring multiple processes and multiple machines to complete the grinding operation. Repeated clamping and transfer can easily cause positioning deviations, resulting in poor coaxiality and roundness of the mating surfaces. This leads to uneven hinge gaps after cable chain assembly, and the cable chain is prone to jamming and friction dust during operation, failing to meet the requirements of cleanroom applications.

[0005] Meanwhile, the grinding heads of traditional grinding devices are mostly fixed, and the grinding heads are prone to protruding from the processing area and blocking the cable chain feeding, which makes it impossible to achieve automated continuous feeding processing and results in low production efficiency. Moreover, existing equipment mostly uses multiple independent drive mechanisms to control different grinding components, which makes the equipment structure complex, has a high failure rate, high production cost, and poor practicality. Summary of the Invention

[0006] The purpose of this invention is to solve the problems of dispersed processing steps, poor positioning accuracy, low coaxiality, easy dust generation, equipment interference with feeding, and complex structure in the existing technology of dust-free cable chain hinge mating surfaces. The invention provides a surface grinding device for dust-free cable chain production, which realizes integrated synchronous grinding of multiple sets of mating surfaces of the cable chain, with high processing accuracy, no feeding interference, strong structural linkage, and high degree of automation.

[0007] This invention is implemented as follows: To achieve the above objectives, the present invention adopts the following technical solution: a surface grinding device for dust-free cable chain production, comprising a base, the top of which is provided with a U-shaped enclosure, and the cable chain to be ground is located inside the U-shaped enclosure; one end of the cable chain to be ground is a cylindrical rotating protrusion and a coaxial fixed shaft, the outer diameter of the fixed shaft being smaller than the outer diameter of the cylindrical rotating protrusion, and the other end is provided with a rotating groove corresponding to the cylindrical rotating protrusion, and the inner wall of the rotating groove is provided with a rotating hole corresponding to the fixed shaft, the rotating groove being an arc-shaped wall structure, and the inner diameter of the arc-shaped wall being the same as the outer diameter of the cylindrical rotating protrusion; the parts of the cable chain to be ground are the outer wall of the cylindrical rotating protrusion, the outer wall of the fixed shaft, the inner wall of the rotating hole, the inner wall of the arc-shaped wall, and the inner wall of the end of the rotating groove.

[0008] The horizontal end sidewall of the U-shaped enclosure is provided with a rotary groove grinding section, which includes an end grinding component and an arc-shaped wall grinding component. The end grinding component consists of a connecting disc seat and an extension shaft coaxially arranged therewith. The connecting disc seat is provided with a grinding blade A on the side opposite to the extension shaft. The grinding blade A grinds the inner wall of the end of the rotary groove as the connecting disc seat rotates. Multiple grinding blades B are evenly distributed along the length of the outer wall of the extension shaft. The grinding blades B grind the inner wall of the rotating hole as the extension shaft rotates. The arc-shaped wall grinding component is embedded in the outer wall of the connecting disc seat, and along its length, the outer wall is provided with a grinding layer A. The outer diameter of the grinding layer is the same as the inner diameter of the arc-shaped wall. After the connecting disc seat rotates, when the grinding layer A contacts the inner wall of the arc-shaped wall, the inner wall of the arc-shaped wall is ground by the reciprocating rotation of the grinding layer A.

[0009] The symmetrical vertical end sidewalls of the U-shaped enclosure are provided with two cylindrical grinding sections, each with a ring-shaped structure. A grinding blade C is fitted on the side closest to the drag chain to be ground, used to grind the rotating convex end face of the cylinder. This ensures rotational stability when the rotating convex end face contacts the inner wall of the rotating groove. A grinding blade D is fitted into the inner hole of each cylindrical grinding section, rotating with the cylindrical grinding section. The grinding blade D grinds the outer wall of the fixed shaft, ensuring contact between the fixed shaft and the inner wall of the rotating hole. The stability of rotation is ensured. In addition, a cylindrical protruding grinding part is assembled between the two cylindrical grinding parts. The cylindrical protruding grinding part is arc-shaped, and its inner diameter is the same as the outer diameter of the cylindrical rotating protrusion. After the cylindrical grinding part rotates, the grinding layer B provided on the inner wall of the cylindrical protruding grinding part contacts the outer wall of the cylindrical rotating protrusion. After the cylindrical grinding part rotates, the grinding layer B reciprocates to grind the outer wall of the cylindrical rotating protrusion, ensuring the stability of rotation when the outer wall of the cylindrical rotating protrusion contacts the inner wall of the arc-shaped wall.

[0010] Furthermore, the rotary groove grinding section also includes a hollow connecting seat. The connecting seat is connected to the end grinding part through a linear drive. In the initial state, the distance between the end faces of the extension shafts at both ends of the connecting seat is less than the distance between the end faces of the rotary groove, so as to avoid the grinding drag chain being blocked by the extension shaft after it moves forward, thus achieving unobstructed feeding. During processing, the linear drive drives the rotary groove grinding section to extend outward until the extension shaft extends into the rotating hole, so that the grinding edge A and the inner wall of the end of the rotary groove come into contact, and the grinding edge B and the inner wall of the rotating hole come into contact. As the connecting plate seat rotates, the end face of the rotary groove and the inner wall of the rotating hole are ground.

[0011] Furthermore, in the initial state, the cylindrical grinding part is located inside the vertical end sidewall of the U-shaped enclosure. When the extension shaft moves outward under the drive of the linear drive, the actuation part causes the cylindrical grinding part to move outward from the vertical end sidewall of the U-shaped enclosure, thereby realizing that the grinding edge C is in contact with the cylindrical rotating protruding end face, and the grinding edge D is in contact with the outer wall of the fixed shaft. As the cylindrical grinding part rotates, it grinds the cylindrical rotating protruding end face and the outer wall of the fixed shaft.

[0012] Furthermore, the actuating part is a plate-shaped or rod-shaped actuating member. The actuating member rotates within the vertical end sidewall of the U-shaped enclosure via a rotating shaft. In the initial state, the actuating member is inclined. After moving outward through the extending shaft, it abuts against one end of the actuating member. The actuating member rotates around the rotating shaft as the rotation center, causing the other end of the actuating member to move in a certain direction, thereby driving the cylindrical grinding part to move towards the drag chain to be ground.

[0013] Furthermore, a drive ring A is rotatably mounted inside the vertical end sidewall of the U-shaped enclosure. A drive seat slides along the length of the inner wall of the drive ring A, and the drive seat achieves sliding engagement with a slider on the inner wall of the drive ring A through a sliding groove. The end of the extension shaft has a frustum-shaped structure, and positioning grooves are equidistantly arranged around it in the circumferential direction. The end of the drive seat has a frustum-shaped connecting groove corresponding to the frustum-shaped end of the extension shaft. The inner wall of the connecting groove has an engagement groove corresponding to the positioning groove. When the extension shaft is driven outward... After rotation, the positioning groove and the meshing groove are engaged. During this process, the drive seat moves relative to one end of the actuating part along the length direction of the drive ring A until the actuating part rotates. Then, as the drive ring A rotates, the brake drive seat rotates, and then the extension shaft rotates through the engagement of the positioning groove and the meshing groove, which in turn drives the rotary groove grinding part to rotate. The rotary groove grinding part and the output end of the linear drive are rotatably connected to ensure that the rotary groove grinding part moves linearly after being acted upon by the linear drive, while not affecting the rotation of the rotary groove grinding part.

[0014] Furthermore, a drive ring B is rotatably mounted inside the vertical end sidewall of the U-shaped enclosure; a connecting part slides along the length of the inner wall of the drive ring B, and the connecting part achieves sliding engagement with the slider on the inner wall of the drive ring B through a sliding groove. The connecting part and the cylindrical grinding part are coaxially fixed, and one end of the connecting part is in contact with the end of the actuating part away from the extension shaft. After one end of the actuating part is abutted by the extension shaft, the actuating part rotates, and according to the lever principle, it drives the connecting part and the cylindrical grinding part to move towards the direction of the drag chain to be ground; the connecting part rotates with the drive ring B, thereby driving the cylindrical grinding part to rotate.

[0015] Furthermore, the drive ring B and the drive ring A are connected by a conveyor belt. When either the drive ring B or the drive ring A is driven by an external drive unit, the drive ring B and the drive ring A rotate synchronously, thereby driving the cylindrical grinding part and the rotary groove grinding part to rotate synchronously.

[0016] Furthermore, the end grinding component is reset by the reset component, thereby resetting the actuator and drive seat and maintaining the initial state. The end grinding component is located inside the vertical end side wall of the U-shaped enclosure, avoiding obstruction of the drag chain to be ground from advancing inside the U-shaped enclosure.

[0017] Furthermore, the two side walls of the arc-shaped grinding part have a T-shaped structure, and the connecting plate seat is provided with a sliding groove corresponding to the connecting plate seat, so as to ensure that the arc-shaped grinding part is not affected after the connecting plate seat moves to the end of the rotating groove, and drives the arc-shaped grinding part to rotate with the rotation of the connecting plate seat; in addition, the inner wall of the arc-shaped grinding part and the connecting plate seat are connected by a rotating component. One end of the rotating component rotates circumferentially along the outer wall of the connecting plate seat, and the other end is fixed to the inner wall of the arc-shaped grinding part, providing positioning support for the arc-shaped grinding part, while ensuring that it rotates coaxially with the connecting plate seat, that is, ensuring that it is coaxial with the rotating groove.

[0018] Furthermore, the cylindrical protruding grinding portion slides along the radial direction of the cylindrical grinding portion. Specifically, the outer wall of the cylindrical grinding portion is provided with a sliding opening corresponding to the cylindrical protruding grinding portion. Under the action of the elastic reset member, the cylindrical protruding grinding portion maintains its initial state at the outer edge of the cylindrical grinding portion. When the cylindrical protruding grinding portion is located inside the vertical end side wall of the U-shaped enclosure, the cylindrical protruding grinding portion is higher than the top of the drag chain to be ground. This ensures that the drag chain to be ground is conveyed into the U-shaped enclosure before processing until it abuts against the horizontal end of the U-shaped enclosure. In addition, the U-shaped enclosure... A contact end ring is also provided inside the vertical end side wall. When the cylindrical grinding part is driven by the actuator at the connecting part, it moves forward, causing the cylindrical grinding part to move outward. The outer end of the cylindrical protruding grinding part is provided with a contact inclined surface, and the outer end face of the contact end ring is provided with a braking inclined surface. As the cylindrical grinding part moves outward, it contacts the contact inclined surface through the braking inclined surface, causing the cylindrical protruding grinding part to move radially towards the center relative to the cylindrical grinding part until the cylindrical protruding grinding part is attached to the outer wall of the cylindrical rotating protrusion. As the cylindrical grinding part rotates, the cylindrical protruding grinding part grinds the outer wall of the cylindrical rotating protrusion.

[0019] The beneficial effects of this invention are: 1. This invention features a rotary groove grinding section that works in conjunction with a cylindrical grinding section. This allows for the simultaneous, single-clamping grinding of six key hinge mating surfaces of the cable chain: the outer wall of the cylindrical rotating protrusion, the end face of the cylindrical rotating protrusion, the outer wall of the fixed shaft, the inner wall of the rotary groove end, the inner wall of the arc-shaped wall, and the inner wall of the rotating hole. This replaces the traditional multi-equipment, multi-process, and multi-stage processing method, effectively eliminating multiple clamping and positioning errors, significantly improving the coaxiality and roundness accuracy of each mating surface, ensuring uniform hinge rotation clearance of the cable chain, smooth operation, and extremely low friction dust generation, fully meeting the requirements for use in cleanrooms.

[0020] 2. This invention drives the end grinding component to extend and retract through a linear drive component. In the initial state, the grinding component is completely retracted to avoid the feed, which solves the problem of interference with workpiece feeding in traditional grinding structures. It can realize automated continuous feeding, positioning, grinding and unloading operations of the drag chain, greatly improving production and processing efficiency.

[0021] 3. The present invention adopts a lever linkage structure of the extension shaft telescopic actuation part. Multiple sets of cylindrical grinding parts can be simultaneously triggered to feed and fit the workpiece through a set of linear drive actions. There is no need to set up multiple sets of independent drive mechanisms, which simplifies the equipment structure, reduces the equipment manufacturing cost and failure probability, and has strong structural linkage and high stability.

[0022] 4. This invention achieves synchronous transmission between drive ring A and drive ring B through a conveyor belt. A single power source can drive all grinding parts to rotate synchronously, ensuring that the cutting line speed of each grinding part is consistent, the processing texture is uniform, the mating surface fit is high, and the assembly accuracy of the drag chain is further improved.

[0023] 5. This invention features a reset component and an elastic reset structure, allowing all grinding components to automatically reset to their storage state after processing, ensuring uninterrupted feeding. Simultaneously, the arc-shaped wall grinding component employs a T-shaped sliding structure and a rotating support structure, which can adaptively adjust the feed stroke and maintain coaxiality at all times. The cylindrical protruding grinding part adopts a sloping extrusion radial adaptive fitting structure, fitting the workpiece only during processing and avoiding interference throughout the feeding process. The structural design is reasonable and highly practical. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of a surface grinding device for dust-free cable chain production provided by an embodiment of the present invention; Figure 2 This is a structural schematic diagram of the rotary groove grinding section, the cylindrical grinding section, and the actuation section; Figure 3 This is a schematic diagram of the mating structure of the rotary groove grinding section, the cylindrical grinding section, and the actuating section; Figure 4 This is a schematic diagram of the mating structure of the rotary groove grinding section and the cylindrical grinding section; Figure 5 This is a schematic diagram of the rotary groove grinding section; Figure 6 This is a schematic diagram of the cylindrical grinding section and the contact end ring; Figure 7 This is a schematic diagram of the internal structure of the cable chain to be ground.

[0026] In the figure: 1-base, 2-cable chain to be ground, 3-rotary groove grinding part, 30-end grinding part, 301-connecting disc seat, 3010-grinding edge A, 302-extension shaft, 3020-grinding edge B, 31-arc wall grinding part, 310-rotating part, 32-connecting seat, 4-cylindrical grinding part, 40-grinding edge C, 41-grinding edge D, 42-cylindrical protruding grinding part, 420-contacting inclined surface, 43-sliding mouth, 5-actuating part, 6-drive ring A, 60-drive seat, 600-positioning groove, 7-drive ring B, 70-connecting part, 8-contacting end ring, 80-braking inclined surface, 10-U-shaped enclosure. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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, 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.

[0028] Example The present invention discloses a surface grinding device for dust-free cable chain production, including a base 1, a U-shaped enclosure 10 fixedly installed on the top of the base 1, and the cable chain 2 to be ground is placed inside the U-shaped enclosure 10.

[0029] In the prior art, the shape of the drag chain 2 to be ground is referenced Figure 1 and Figure 7 Specifically: One end of the drag chain 2 to be ground is provided with a cylindrical rotating protrusion and a coaxial fixed shaft. The outer diameter of the fixed shaft is smaller than the outer diameter of the cylindrical rotating protrusion. The other end of the drag chain is provided with a rotating groove. The rotating groove has an arc-shaped wall structure and the inner diameter of the arc-shaped wall matches the outer diameter of the cylindrical rotating protrusion. A rotating hole adapted to the fixed shaft is opened inside the rotating groove. The surfaces to be processed on the drag chain are the outer wall of the cylindrical rotating protrusion, the end face of the cylindrical rotating protrusion, the outer wall of the fixed shaft, the inner wall of the end of the rotating groove, the inner wall of the arc-shaped wall, and the inner wall of the rotating hole.

[0030] In this embodiment, grinding is performed on the inner wall of the rotary groove end, the inner wall of the arc-shaped wall, and the inner wall of the rotating hole, which is achieved by the rotary groove grinding part 3. Specifically, refer to... Figure 1 The rotary groove grinding part 3 is assembled on the horizontal end side wall of the U-shaped enclosure 10. The rotary groove grinding part 3 consists of the end grinding part 30, the arc-shaped wall grinding part 31 and the hollow connecting seat 32.

[0031] Furthermore, a linear drive is installed inside the connecting seat 32, and the output end of the linear drive is rotatably connected to the end grinding component 30. The end grinding component 30 includes a connecting disc seat 301 and an extension shaft 302 arranged coaxially, wherein the extension shaft 302 is located on the side of the connecting disc seat 301 away from the connecting seat 32, and an annular grinding edge A3010 is provided on the end face of the connecting disc seat 301 facing the extension shaft 302, and multiple sets of grinding edges B3020 are equidistantly arranged along the axial direction on the outer wall of the extension shaft 302.

[0032] Furthermore, the arc-shaped wall grinding part 31 is fitted into the outer wall of the connecting disk seat 301 using a T-shaped sliding structure, allowing it to slide axially relative to the connecting disk seat 301. A grinding layer A is provided on the outer wall of the arc-shaped wall grinding part 31, with the outer diameter of the grinding layer A matching the inner diameter of the arc-shaped wall of the rotating groove. The inner wall of the arc-shaped wall grinding part 31 is rotatably connected to the outer wall of the connecting seat 32 via a rotating component 310, ensuring that the arc-shaped wall grinding part 31 is always coaxial with the rotating groove. In some embodiments, the rotating component 310 refers to... Figure 3 , Figure 4 and Figure 5 Its end has a T-shaped structure, and its horizontal end has an arc-shaped slider structure. The outer wall of the connecting seat 32 is provided with an annular groove corresponding to the arc-shaped slider for the arc-shaped slider to slide. In addition, the vertical end of the rotating part 310 and the arc-shaped wall grinding part 31 are connected by multiple sets of locking screws to install the rotating part 310 on the arc-shaped wall grinding part 31, ensuring that the arc-shaped wall grinding part 31, the connecting seat 32 and the arc-shaped wall are coaxial, and the movement of the arc-shaped wall grinding part 31 is not affected.

[0033] In this embodiment, grinding is performed on the outer wall of the cylindrical rotating protrusion, the end face of the cylindrical rotating protrusion, and the outer wall of the fixed shaft, which is achieved by the cylindrical grinding part 4. Specifically, refer to... Figure 1 and Figure 2 The annular cylindrical grinding section 4 consists of two sets, which are respectively assembled in the symmetrical vertical end sidewalls on both sides of the U-shaped enclosure 10. The end face of the cylindrical grinding section 4 facing the drag chain is provided with a grinding blade C40, and the inner hole wall is provided with a grinding blade D41.

[0034] Furthermore, refer to Figure 1 , Figure 2 , Figure 3 and Figure 6 An arc-shaped cylindrical protruding grinding part 42 is assembled between two sets of cylindrical grinding parts 4. A radial sliding opening 43 is opened on the outer wall of the cylindrical grinding part 4. The cylindrical protruding grinding part 42 is slidably assembled inside the sliding opening 43. An elastic reset member is provided inside the sliding opening 43. The elastic reset member can be an elastic component such as a spring. Under normal conditions, the elastic reset member lifts the cylindrical protruding grinding part 42 to the outer edge of the cylindrical grinding part 4, which is higher than the cable conveyor plane, so as to achieve material feeding avoidance. A grinding layer B is provided on the inner wall of the cylindrical protruding grinding part 42. The inner diameter of the grinding layer B matches the outer diameter of the cylindrical rotating protrusion.

[0035] In some embodiments, in order to constrain the cylindrical protrusion grinding part 42 to slide along the slide 43, a guide rod is provided in the slide 43, and the cylindrical protrusion grinding part 42 slides along the length direction of the guide rod. Furthermore, it can be sleeved on the outside of the guide rod as an elastic reset member of a spring.

[0036] Reference Figure 2 and Figure 3 To link the outward movement of the extension shaft 302 with the outward movement of the cylindrical grinding section 4, a plate-shaped or rod-shaped actuator 5 is hinged to the inside of the vertical end sidewall of the U-shaped enclosure 10. Initially, the actuator 5 is arranged at an angle. Inside the U-shaped enclosure 10, a drive ring A6 and a drive ring B7 are also rotatably assembled. A drive seat 60 is slidably assembled on the inner wall of drive ring A6, and a connecting part 70 is slidably assembled on the inner wall of drive ring B7. The connecting part 70 is coaxially fixed to the cylindrical grinding section 4, and its end abuts against the actuator 5. The drive rings A6 and B7 are connected by a conveyor belt for synchronous rotation.

[0037] The working principle of this embodiment is as follows: S1. In the initial state of the device, the linear drive component is in a retracted state, the end grinding component 30 is stored inside the connecting seat 32, the distance between the two ends of the extension shaft 302 is less than the distance between the end faces of the rotating groove, and there is no structure to block the cable chain from feeding; at the same time, the cylindrical grinding part 4 is completely stored inside the side wall of the U-shaped enclosure 10, and the cylindrical protruding grinding part 42 is raised under the action of the elastic reset component to avoid the cable chain conveying path. The operator or the conveying mechanism can smoothly send the cable chain 2 to be ground into the U-shaped enclosure 10 and complete the positioning.

[0038] S2. After the workpiece is positioned, the linear drive is activated. The linear drive pushes the end grinding part 30 outward, and the extension shaft 302 gradually extends into the inside of the drag chain rotating hole until the grinding edge A3010 is in contact with the inner wall of the rotating groove end and the grinding edge B3020 is in contact with the inner wall of the rotating hole. During the extension of the extension shaft 302, its frustum-shaped end is inserted into the connecting groove of the drive seat 60, and the positioning groove 600 engages with the meshing groove. At the same time, the drive seat 60 is pushed to slide along the drive ring A6 axially, abutting against one end of the actuating part 5. The actuating part 5 rotates around the rotating shaft, and through the lever principle, pushes the connecting part 70 and the cylindrical grinding part 4 to feed in the direction of the drag chain.

[0039] S3. During the feeding process of the cylindrical grinding section 4, the braking slope 80 of the contact end ring 8 presses the contact slope 420 of the cylindrical protruding grinding section 42, forcing the cylindrical protruding grinding section 42 to overcome the elastic force of the elastic reset member and contract radially inward until the grinding layer B is tightly attached to the outer wall of the cylindrical rotating protrusion; at this time, the grinding edge C40 is attached to the end face of the cylindrical rotating protrusion, and the grinding edge D41 wraps around and attaches to the outer wall of the fixed shaft, completing the precise attachment and positioning of all grinding structures.

[0040] S4. Subsequently, the external drive unit is activated, driving any set of drive rings to rotate. Under the transmission of the conveyor belt, drive ring A6 and drive ring B7 rotate synchronously at the same speed. Drive ring A6 drives extension shaft 302, end grinding part 30, and arc-shaped wall grinding part 31 to rotate synchronously through the meshing structure of drive seat 60, positioning groove 600 and meshing groove. Grinding edge A3010 grinds the inner wall of the end of the rotating groove, grinding edge B3020 grinds the inner wall of the rotating hole, and grinding layer A grinds the inner wall of the arc-shaped wall. At the same time, drive ring B7 drives cylindrical grinding part 4 to rotate synchronously. Grinding edge C40 grinds the cylindrical rotating protruding end face, grinding edge D41 grinds the outer wall of the fixed shaft, and grinding layer B grinds the outer wall of the cylindrical rotating protruding. The synchronous precision grinding of six key mating surfaces of the drag chain is completed in one go. During the grinding process, drive ring A6 and drive ring B7 can be driven to rotate intermittently in both directions by the drive unit to complete the grinding process.

[0041] S5. After the grinding process is completed, the external drive unit stops working, the linear drive unit drives the end grinding part 30 to retract, the reset unit pulls the end grinding part 30 and the drive seat 60 to reset, and the actuator 5 returns to the initial tilt state; the cylindrical grinding part 4 retracts with the connecting part 70, the inclined surface extrusion effect is released, and the cylindrical protruding grinding part 42 is radially reset and lifted under the action of the elastic reset unit. All grinding structures are stored inside the side wall of the U-shaped enclosure 10, and the unobstructed feeding state is restored, waiting for the next set of workpieces to be processed, realizing continuous automated production.

[0042] It should be noted that the specific model and specifications of the motor need to be selected and determined based on the actual specifications of the device. The specific selection and calculation method adopts the existing technology in this field, so it will not be described in detail here.

[0043] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the invention by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the invention should be included within the scope of protection of the invention.

Claims

1. A surface grinding device for cleanroom cable chain production, comprising a base (1), characterized in that: The base (1) is provided with a U-shaped enclosure (10) on top, and the drag chain (2) to be ground is placed inside the U-shaped enclosure (10); The U-shaped enclosure (10) has a rotary groove grinding part (3) on its horizontal end sidewall. The rotary groove grinding part (3) includes an end grinding part (30) and an arc-shaped wall grinding part (31). The end grinding part (30) is composed of a connecting plate seat (301) and a coaxial extension shaft (302). The connecting plate seat (301) has a grinding blade A (3010) on the side facing the extension shaft (302). The outer wall of the extension shaft (302) has a plurality of grinding blades B (3020) equidistantly arranged along the axial direction. The arc-shaped wall grinding part (31) is embedded in the outer wall of the connecting plate seat (301). The outer wall of the arc-shaped wall grinding part (31) has a grinding layer A. The U-shaped enclosure (10) has a set of annular cylindrical grinding parts (4) on each of the symmetrical vertical end sidewalls; the cylindrical grinding parts (4) have grinding blades C (40) facing the drag chain, and grinding blades D (41) are provided in the inner hole of the cylindrical grinding parts (4); an arc-shaped cylindrical protruding grinding part (42) is provided between the two sets of cylindrical grinding parts (4), and a grinding layer B is provided on its inner surface.

2. The surface grinding device for cleanroom cable chain production according to claim 1, characterized in that: The rotary groove grinding part (3) also includes a hollow connecting seat (32), which is connected to the end grinding part (30) through a linear drive component.

3. The surface grinding device for cleanroom cable chain production according to claim 2, characterized in that: The U-shaped enclosure (10) has an actuating part (5) rotatably connected to the vertical end side wall. The extension shaft (302) extends outward and presses against the actuating part (5). The actuating part (5) drives the cylindrical grinding part (4) to move in the direction of the drag chain, so that the grinding edge C (40) fits against the cylindrical rotating protruding end face and the grinding edge D (41) fits against the outer wall of the fixed shaft. The cylindrical grinding part (4) rotates and grinds the cylindrical mating surface.

4. The surface grinding device for cleanroom cable chain production according to claim 3, characterized in that: The actuator (5) is a plate-shaped or rod-shaped lever actuator. The actuator is hinged to the inside of the vertical side wall of the U-shaped enclosure (10) via a rotating shaft. In the initial state, the actuator is arranged at an angle. The extension shaft (302) extends outward to abut one end of the actuator. The actuator rotates around the rotating shaft, and the other end pushes the cylindrical grinding part (4) to feed.

5. The surface grinding device for cleanroom cable chain production according to claim 4, characterized in that: The U-shaped enclosure (10) has a drive ring A (6) rotatably mounted on the vertical side wall. The drive seat (60) is axially slidably mounted on the inner wall of the drive ring A (6). The outer end of the extension shaft (302) is a frustum structure with a circumferentially evenly spaced positioning groove (600). The end of the drive seat (60) is provided with a matching frustum connecting groove, and the inner wall of the connecting groove is provided with a meshing groove. When the extension shaft (302) extends outward, the positioning groove (600) engages with the meshing groove, and the drive seat (60) slides synchronously to press the actuator (5). The drive ring A (6) rotates to drive the drive seat (60), the extension shaft (302), and the rotary groove grinding part (3) to rotate synchronously. In addition, the rotary groove grinding part (3) is rotatably connected to the output end of the linear drive component.

6. The surface grinding device for cleanroom cable chain production according to claim 5, characterized in that: The U-shaped enclosure (10) has a rotatable drive ring B (7) inside the vertical end side wall; the drive ring B (7) is axially slidably fitted with a connecting part (70), the connecting part (70) is coaxially fixed with the cylindrical grinding part (4), and the end of the connecting part (70) abuts against the actuating part (5) on the side away from the extension shaft (302); the actuating part (5) rotates to push the connecting part (70) and the cylindrical grinding part (4) to feed, and the drive ring B (7) rotates to drive the cylindrical grinding part (4) to rotate synchronously.

7. The surface grinding device for cleanroom cable chain production according to claim 6, characterized in that: The drive ring A (6) and drive ring B (7) are connected by a conveyor belt.

8. The surface grinding device for cleanroom cable chain production according to claim 7, characterized in that: The end grinding part (30) is equipped with a reset part. After the processing is completed, the reset part pulls the end grinding part (30) and the drive seat (60) to retract and reset, and the actuator (5) returns to the initial tilt state. The grinding assembly is stored in the side wall of the U-shaped enclosure (10).

9. The surface grinding device for cleanroom cable chain production according to claim 8, characterized in that: The arc-shaped wall grinding part (31) has a T-shaped structure on both sides. The outer wall of the connecting plate (301) is provided with a matching T-shaped sliding groove. The arc-shaped wall grinding part (31) can slide axially relative to the connecting plate (301) and rotate synchronously. A rotating part (310) is assembled between the inner wall of the arc-shaped wall grinding part (31) and the outer wall of the connecting plate (32). The rotating part (310) provides coaxial limiting support for the arc-shaped wall grinding part (31).

10. The surface grinding device for cleanroom cable chain production according to claim 9, characterized in that: The cylindrical grinding part (4) has a radial sliding opening (43) on its outer wall. The cylindrical protruding grinding part (42) slides radially through the sliding opening (43). An elastic reset member is provided inside the sliding opening (43). In the initial state, the elastic reset member lifts the cylindrical protruding grinding part (42) to a position higher than the top surface of the drag chain conveyor channel to avoid the feed. The U-shaped enclosure (10) has a fixed abutting end ring (8) inside its side wall. The abutting end ring (8) is provided with a braking slope (80). The outer end of the cylindrical protruding grinding part (42) is provided with an abutting slope (420). When the cylindrical grinding part (4) is fed, the braking slope (80) squeezes the abutting slope (420), forcing the cylindrical protruding grinding part (42) to shrink towards the center and fit against the outer wall of the cylindrical rotating protrusion to complete the grinding. After processing, the cylindrical grinding part (4) retracts, and the elastic reset member drives the cylindrical protruding grinding part (42) to reset and avoid the feed.

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