Multi-axis linkage automatic lathe composite machining mechanism

Abstract

The application discloses a kind of multi-axis linkage automatic lathe composite processing mechanism, this kind of novel flexible inner support and multi-axis linkage composite processing structure, including: rack, workbench, clamping mechanism, tool assembly and multi-axis linkage mechanism, clamping mechanism includes rigid cylinder, flexible cylinder and air cavity, air cavity is communicated with inflator, multi-axis linkage mechanism drives tool assembly to descend and drive second slide bar, rotating rod and piston movement, make gas enter air cavity and make flexible cylinder expand, to carry out inner support clamping to rubber ring, while setting pressure rod is positioned to rubber ring, is driven tool assembly by multi-axis linkage mechanism and is carried out complex processing such as turning, cutting groove, chamfering and drilling to rubber ring, can reduce rubber ring repeat clamping, improve processing stability and processing efficiency.

Description

Technical Field

[0001] This invention belongs to the technical field of rubber product processing equipment, specifically relating to a multi-axis linkage automatic lathe composite processing mechanism. Background Technology

[0002] After rubber products such as rubber seals are manufactured, they usually need to be precision machined on their outer diameter, inner hole, end face and sealing groove to meet the requirements of different specifications and sealing performance. Lathes can perform turning, grooving, chamfering and other processing on rubber products by rotating the workpiece and feeding the tool. Therefore, they are suitable for the fine processing of some rubber products.

[0003] Existing lathes used for processing rubber products typically include a frame, spindle, clamping mechanism, and tool assembly. The rubber product is fixed by the clamping mechanism and then rotated for processing. For rubber seals that require multiple processes such as turning, grooving, chamfering, and drilling, existing equipment usually requires changing the tool or adjusting the processing position. Some processing steps also require re-clamping the workpiece.

[0004] However, due to the softness and high elasticity of rubber products, traditional rigid clamps can easily cause extrusion deformation or positioning misalignment, affecting machining accuracy. Furthermore, repeated clamping increases machining errors and reduces efficiency. Therefore, it is necessary to provide a multi-axis linkage automatic lathe composite machining mechanism that uses a flexible clamping structure to stably support and clamp rubber products, and achieves multiple machining processes through multi-axis linkage, thereby reducing repeated clamping and improving the machining accuracy and efficiency of rubber products. Summary of the Invention

[0005] The purpose of this invention is to provide a multi-axis linkage automatic lathe composite machining mechanism that can stably support and clamp rubber products, and realize multiple processing steps through multi-axis linkage, thereby reducing repeated clamping and improving the processing accuracy and efficiency of rubber products.

[0006] To achieve the above-mentioned technical objectives, the technical solution adopted by the present invention is as follows: The device includes a frame, an upper cavity and a lower cavity, a worktable between the upper cavity and the lower cavity, a clamping mechanism for clamping a rubber ring and a tool assembly for processing the rubber ring in the upper cavity, and the tool assembly is connected to a multi-axis linkage mechanism disposed in the upper cavity. The clamping mechanism includes a tube, which includes a rigid tube and a flexible tube. The bottoms of the rigid tube and the flexible tube are fixedly connected to the worktable. The flexible tube is spaced out on the outside of the rigid tube, and a closed annular air cavity is formed between the rigid tube and the flexible tube. A main air pipe is provided inside the rigid tube. An air pump is provided below the tube in the lower cavity. One end of the main air pipe is connected to the air cavity and the other end is connected to the air pump. The air pump contains a piston, and a first slide rod extending outward from the bottom of the piston and slidably connected thereto is provided. A rotating rod is provided in the lower cavity, and the middle part of the rotating rod is rotatably connected to the frame. The bottom of the first slide rod is rotatably connected to one end of the rotating rod. A second slide rod is provided in the lower cavity, and the other end of the rotating rod is slidably and rotatably connected to the second slide rod. The second slide rod extends upward to the upper cavity and is slidably connected to the worktable. The multi-axis linkage mechanism is driven by the second slide rod to drive the second slide rod to reciprocate in the vertical direction. The second slide rod drives the first slide rod to reciprocate through the rotating rod, so that the piston reciprocates in the air pump and inflates the air chamber, thereby expanding the flexible cylinder and radially supporting and clamping the rubber ring sleeved on the outside of the insert.

[0007] In this structural design, during operation, the rubber ring to be processed is first placed on the outside of the insert, aligning the inner ring of the rubber ring with the flexible cylinder. Then, a multi-axis linkage mechanism drives the second slide rod to move vertically. When the second slide rod moves downwards, it drives the connected rotating rod to rotate around the pivot point between the rotating rod and the frame. As the rotating rod rotates, its other end drives the first slide rod to move, causing the first slide rod to reciprocate the piston inside the air pump. During this reciprocating motion, the piston generates gas, which is then transported through the main air pipe to the sealed annular air chamber formed between the rigid and flexible cylinders. As gas continuously enters the air chamber, the pressure inside gradually increases, causing the flexible cylinder to expand outwards. This allows the outer circumference of the flexible cylinder to gradually abut against the inner wall of the rubber ring, providing radial support and clamping to the rubber ring from the inside. When the flexible cylinder... Once the rubber ring reaches the appropriate expansion state, it is stably positioned on the outside of the insert. At this point, the multi-axis linkage mechanism can continue to drive the tool assembly to move along the predetermined motion trajectory to process the rubber ring accordingly. After processing, the air pressure inside the flexible cylinder decreases, releasing the flexible cylinder from the inner wall of the rubber ring, thus facilitating the removal of the processed rubber ring. The rigid cylinder forms an inner support for the flexible cylinder, and the rubber ring is clamped from the inside by inflating the flexible cylinder. Compared to the rigid clamp directly clamping the rubber ring locally, this method makes the clamping action gentler and expands the support contact range, reducing the possibility of deformation of the rubber ring due to localized force concentration. At the same time, the clamping mechanism is linked with the multi-axis linkage mechanism, enabling the positioning action of the rubber ring to coordinate with the movement of the tool assembly. This helps reduce repeated clamping operations and improves the positioning stability and processing efficiency of the rubber ring during multi-process processing.

[0008] The multi-axis linkage mechanism includes a multi-axis drive assembly for driving the tool assembly to move in multiple directions. The multi-axis drive assembly includes a vertical drive assembly for driving the tool assembly to move vertically. The tool assembly is connected to the vertical drive assembly. The top of the second slide rod is located on the vertical movement path of the tool assembly. After the tool assembly moves downward a preset distance, it abuts against the top of the second slide rod. When the tool assembly continues to move downward, it pushes the second slide rod to move downward. A tension spring is provided in the lower cavity. The tension spring is wound around the second slide rod. One end of the tension spring is connected to the worktable, and the other end is connected to the second slide rod. When the second slide rod moves downward, it stretches the tension spring. The tension spring is used to contract and drive the second slide rod to return to its original position after the tool assembly separates from the second slide rod.

[0009] In this structural design, during operation, the vertical drive component moves the tool assembly downwards. After moving to a preset distance, the tool assembly abuts against the top of the second slide rod and continues to move downwards, pushing the second slide rod downwards. At this time, the second slide rod moves downwards relative to the worktable, causing the tension spring connecting the worktable and the second slide rod to be stretched and store elastic potential energy. While the second slide rod moves downwards, it drives the piston to move through the rotating rod and the first slide rod, causing the air pump to inflate the air chamber, thereby expanding the flexible cylinder and clamping the rubber ring. After the rubber ring is clamped, the tool assembly continues to move to the corresponding processing position for processing. After processing is completed, the tool assembly moves upwards and separates from the second slide rod. The tension spring contracts under its own elastic restoring force, driving the second slide rod upwards. The second slide rod then drives the first slide rod and the piston to reset through the rotating rod, thus restoring the clamping mechanism to its initial state. By setting the tension spring, the vertical movement of the tool assembly can realize the downward movement of the second slide rod, and the elastic restoring effect of the tension spring can realize the automatic reset of the second slide rod, making the clamping and releasing of the rubber ring linked, reducing the need for additional reset drive structures.

[0010] The main air pipe extends along the axial direction of the insert, and multiple air guide pipes are connected to the main air pipe. The multiple air guide pipes are spaced apart along the axial direction of the main air pipe, and the outlet ends of the multiple air guide pipes are respectively connected to the air chamber, so that the gas is diverted through the main air pipe to the multiple air guide pipes and enters the air chamber from multiple positions, thereby making the flexible cylinder expand uniformly in the circumferential and axial directions.

[0011] With this structural design, during operation, the gas generated by the air pump enters the main air pipe and flows into multiple axially spaced air guide pipes. These multiple air guide pipes then enter the air chamber from different positions, allowing the gas to be dispersed into different areas of the air chamber. As the gas continues to enter, each area of ​​the flexible cylinder experiences relatively uniform air pressure and expands outward, thus providing support to the inner wall of the rubber ring at different positions. By diverting the gas supply through multiple air guide pipes, the situation of local expansion of the flexible cylinder caused by concentrated gas entering a single area can be reduced, making the expansion of the flexible cylinder more uniform, improving the stability of the rubber ring's internal support and clamping, and reducing the possibility of local deformation of the rubber ring under stress.

[0012] The insert is shaped like a frustum of a cone. The outer diameters of the rigid and flexible cylinders gradually change in the vertical direction, so that the insert has different outer diameters in the vertical direction. When the rubber ring is fitted on the outside of the insert, it can move in the vertical direction to a position that matches its inner ring according to its inner ring size, and the rubber ring is internally supported and clamped by the expansion of the flexible cylinder.

[0013] This structural design allows the insert to have different outer diameters along the vertical direction. Therefore, when installing rubber rings with different inner ring sizes, the rubber ring can be moved along the insert's axial direction to a position that matches its inner ring. Then, the flexible cylinder is inflated to provide internal support and clamping for the rubber ring. Through the cooperation between the frustoconical insert and the flexible cylinder, the same clamping mechanism can adapt to rubber rings with different inner ring sizes, reducing the need to change clamps. At the same time, the flexible cylinder can provide elastic support to the inner wall of the rubber ring, improving the clamping stability of rubber rings of different specifications.

[0014] The outer circumferential surface of the flexible cylinder is provided with a plurality of outwardly protruding support protrusions, which are distributed at intervals along the circumference and axial direction of the flexible cylinder, and a processing clearance space is formed between adjacent support protrusions.

[0015] This structural design allows multiple support protrusions to move outward with the flexible cylinder during inflation, abutting against the inner wall of the rubber ring. This provides distributed support to the rubber ring from multiple positions, while adjacent support protrusions create a machining clearance space. During drilling, the drilling position aligns with this clearance space, allowing the drilling tool to pass through the rubber ring and enter the clearance space, thus avoiding direct contact with the flexible cylinder. This design effectively maintains the internal support and positioning of the rubber ring using the support protrusions, while also providing clearance for the drilling tool, reducing the possibility of damage to the flexible cylinder during drilling. This makes the clamping mechanism suitable for composite processing of rubber rings that includes drilling operations.

[0016] The clamping mechanism further includes two pressure rods and a power drive assembly for driving the two pressure rods to move. The two pressure rods are respectively disposed on both sides of the insert. The frame is provided with a U-shaped guide path corresponding to the two pressure rods. The two pressure rods are slidably connected to the corresponding U-shaped guide path. The power drive assembly is drivenly connected to the two pressure rods to drive the two pressure rods to move along the corresponding U-shaped guide path. The side of the U-shaped guide path near the insert is set as an inclined section. When the pressure rod moves to the inclined section, the pressure rod gradually approaches the insert and moves downward to press against the upper surface of the rubber ring.

[0017] With this structural design, during operation, the power drive assembly moves the two pressure rods along corresponding U-shaped guide paths. When the pressure rods move to the inclined section near the insert, under the guidance of the inclined section, the pressure rods gradually approach the insert and move downwards until they press against the upper surface of the rubber ring. At this time, the flexible cylinder provides radial support from the inside of the rubber ring, and the two pressure rods press down and position the rubber ring from above, thus forming a combined radial and axial positioning effect on the rubber ring, limiting axial movement or warping during the processing of the rubber ring, and improving processing stability. After processing is completed, the pressure rods return along the U-shaped guide path and move away from the rubber ring so that the processed rubber ring can be removed.

[0018] The main air pipe extends upward along the axial direction of the rigid cylinder, and the top of the main air pipe extends to the top of the flexible cylinder and abuts against the top of the flexible cylinder to support the top of the flexible cylinder so that the flexible cylinder can maintain a predetermined shape when it is inflated.

[0019] This structural design ensures that when gas enters the gas chamber and causes the flexible cylinder to expand, the top of the main gas pipe supports the top of the flexible cylinder, preventing it from collapsing inward or deforming excessively, thus allowing the flexible cylinder to maintain a relatively stable expansion shape. This improves the structural stability of the top of the flexible cylinder, enabling it to continuously support the inner wall of the rubber ring during clamping and subsequent processing, thereby enhancing the clamping reliability and processing stability of the rubber ring.

[0020] The invention employing the above technical solution has the following advantages: 1. This invention drives the tool assembly to move in multiple directions through a multi-axis linkage mechanism. The vertical movement of the tool assembly triggers the action of the second slide rod, rotating rod, first slide rod, and air pump, causing the flexible cylinder to expand and automatically clamp the rubber ring. At the same time, it works with the tool assembly to complete various processing steps such as turning, grooving, chamfering, and drilling. This reduces the positioning error caused by repeated clamping and repositioning of the rubber ring between different processing steps, and allows the rubber ring to complete multiple processing steps in the same clamping state. This is beneficial to improving processing accuracy, processing efficiency, and the continuity of the processing process.

[0021] 2. This invention utilizes the expansion of a flexible cylinder to provide radial support from the inside of the rubber ring. The pressure rods on both sides move along a U-shaped guide path, causing the pressure rods to gradually approach and press downward against the rubber ring in the inclined section. This forms a clamping method that combines radial inward support and axial downward pressure. The flexible cylinder can form a large range of close support with the inner wall of the rubber ring, reducing the deformation caused by local rigid clamping. At the same time, the pressure rods can limit the axial movement and warping of the rubber ring during processing, so that the rubber ring maintains a more stable positioning state during turning, grooving, chamfering and drilling.

[0022] 3. This invention sets the insert cylinder as a truncated cone structure, allowing rubber rings of different inner ring sizes to move to the corresponding installation position according to their inner ring size, and to be internally supported and clamped by the expansion of the flexible cylinder; at the same time, the processing avoidance space is formed between the multiple support protrusions on the outer circumference of the flexible cylinder, which can provide a avoidance area for the drilling tool when drilling the rubber ring, avoiding the drilling tool from directly acting on the flexible cylinder. In conjunction with the main air pipe and multiple air guide pipes to uniformly supply air to the flexible cylinder, and the tension spring to automatically reset the second slide rod, the adaptability, clamping stability and reliability of repeated use of the clamping mechanism can be improved.

[0023] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural schematic diagram of an embodiment of a multi-axis linkage automatic lathe composite machining mechanism according to the present invention; Figure 2 This is a perspective sectional view of an embodiment of a multi-axis linkage automatic lathe composite machining mechanism according to the present invention; Figure 3 This is a three-dimensional structural diagram of the clamping mechanism according to an embodiment of a multi-axis linkage automatic lathe composite machining mechanism of the present invention; Figure 4 This is a planar sectional view of the insert cylinder according to an embodiment of a multi-axis linkage automatic lathe composite machining mechanism of the present invention; Figure 5 This is a perspective sectional view of an air pump according to an embodiment of a multi-axis linkage automatic lathe composite machining mechanism of the present invention; The symbols for the main components are explained below: 1. Frame; 11. Upper cavity; 12. Lower cavity; 13. Worktable; 2. Clamping mechanism; 21. Insert cylinder; 211. Rigid cylinder; 212. Flexible cylinder; 213. Air chamber; 214. Support protrusion; 22. Main air pipe; 221. Air guide pipe; 23. Air pump; 231. Piston; 232. First slide rod; 24. Rotating rod; 25. Second slide rod; 26. Tension spring; 27. Pressure rod; 28. Power drive assembly; 3. Tool assembly; 4. Vertical drive assembly. Detailed Implementation

[0025] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that similar or identical parts are referred to by the same reference numerals in the drawings or description. Implementations not shown or described in the drawings are forms known to those skilled in the art. In addition, directional terms mentioned in the embodiments, such as "up," "down," "top," "bottom," "left," "right," "front," and "back," are only for reference to the directions in the drawings and are not intended to limit the scope of protection of the present invention.

[0026] like Figures 1-5 As shown, a multi-axis linkage automatic lathe composite machining mechanism of the present invention includes a frame 1, an upper cavity 11 and a lower cavity 12 are provided in the frame 1, a worktable 13 is provided between the upper cavity 11 and the lower cavity 12, a clamping mechanism 2 for clamping a rubber ring and a tool assembly 3 for machining the rubber ring are provided in the upper cavity 11, and the tool assembly 3 is connected to the multi-axis linkage mechanism provided in the upper cavity 11. The clamping mechanism 2 includes a tube 21, which includes a rigid tube 211 and a flexible tube 212. The bottoms of the rigid tube 211 and the flexible tube 212 are fixedly connected to the worktable 13. The flexible tube 212 is spaced out on the outside of the rigid tube 211, and a closed annular air cavity 213 is formed between the rigid tube 211 and the flexible tube 212. A main air pipe 22 is provided inside the rigid tube 211. An air pump 23 is provided below the tube 21 in the lower cavity 12. One end of the main air pipe 22 is connected to the air cavity 213 and the other end is connected to the air pump 23. A piston 231 is installed inside the air pump 23. A first slide rod 232 is installed at the bottom of the piston 231, extending outward from the air pump 23 and slidably connected thereto. A rotating rod 24 is installed inside the lower cavity 12. The middle part of the rotating rod 24 is rotatably connected to the frame 1. The bottom of the first slide rod 232 is rotatably connected to one end of the rotating rod 24. A second slide rod 25 is installed inside the lower cavity 12. The other end of the rotating rod 24 is slidably and rotatably connected to the second slide rod 25. The second slide rod 25 extends to the upper cavity 11 and is slidably connected to the worktable 13. A multi-axis linkage mechanism is driven by the second slide rod 25 to drive the second slide rod 25 to reciprocate in the vertical direction. The second slide rod 25 drives the first slide rod 232 to reciprocate through the rotating rod 24, so that the piston 231 reciprocates inside the air pump 23 and inflates the air chamber 213, thereby expanding the flexible cylinder 212 and radially supporting and clamping the rubber ring sleeved on the outside of the insert 21.

[0027] In practice, depending on the actual situation, the air pump 23 can also be replaced with an air compressor. In this embodiment, during operation, the rubber ring to be processed is first placed on the outside of the insert 21, so that the inner ring of the rubber ring corresponds to the flexible cylinder 212. Then, the second slide rod 25 is driven to move vertically through the multi-axis linkage mechanism. When the second slide rod 25 moves downward, the second slide rod 25 drives the rotating rod 24 connected to it to rotate around the rotational connection position between the middle of the rotating rod 24 and the frame 1. When the rotating rod 24 rotates, its other end drives the first slide rod 24 to rotate. The rod 232 moves, causing the first sliding rod 232 to drive the piston 231 inside the air pump 23 to reciprocate. During the reciprocating movement of the piston 231 inside the air pump 23, the air pump 23 generates gas, which is then transported through the main air pipe 22 to the sealed annular air chamber 213 formed between the rigid cylinder 211 and the flexible cylinder 212. As gas continues to enter the air chamber 213, the pressure inside the air chamber 213 gradually increases, causing the flexible cylinder 212 to expand outward, thereby causing the outer circumference of the flexible cylinder 212 to gradually come into contact with the rubber ring. The flexible cylinder 212 forms radial support and clamping on the rubber ring from the inside. When the flexible cylinder 212 reaches the corresponding expansion state, the rubber ring is stably positioned on the outside of the insert cylinder 21. At this time, the multi-axis linkage mechanism can continue to drive the tool assembly 3 to move according to the predetermined motion trajectory to process the rubber ring accordingly. After processing, the air pressure inside the flexible cylinder 212 decreases, allowing the flexible cylinder 212 to release the pressure on the inner wall of the rubber ring, thus facilitating the removal of the processed rubber ring. The rigid cylinder 211 forms inner support on the flexible cylinder 212, and the flexible cylinder 212 is inflated and clamped from the inside of the rubber ring. Compared with the rigid clamp directly clamping the rubber ring locally, the clamping action is more gentle and the support contact range is expanded, reducing the possibility of deformation of the rubber ring due to local force concentration. At the same time, the clamping mechanism 2 is linked with the multi-axis linkage mechanism, so that the positioning action of the rubber ring can be coordinated with the movement of the tool assembly 3, which helps to reduce repeated clamping operations and improve the positioning stability and processing efficiency of the rubber ring during multi-process processing.

[0028] The multi-axis linkage mechanism includes a multi-axis drive assembly for driving the tool assembly 3 to move in multiple directions. The multi-axis drive assembly includes a vertical drive assembly 4 for driving the tool assembly 3 to move vertically. The tool assembly 3 is connected to the vertical drive assembly 4. The top of the second slide rod 25 is located on the vertical movement path of the tool assembly 3. After the tool assembly 3 moves downward a preset distance, it abuts against the top of the second slide rod 25. When the tool assembly 3 continues to move downward, it pushes the second slide rod 25 to move downward. A tension spring 26 is provided in the lower cavity 12. The tension spring 26 is wound around the second slide rod 25. One end of the tension spring 26 is connected to the worktable 13 and the other end is connected to the second slide rod 25. When the second slide rod 25 moves downward, it stretches the tension spring 26. The tension spring 26 is used to retract and drive the second slide rod 25 to return to its original position after the tool assembly 3 separates from the second slide rod 25.

[0029] In practice, depending on the actual situation, the tension spring 26 can also be replaced with a compression spring. In this embodiment, during operation, the vertical drive assembly 4 drives the cutter assembly 3 to move downward. After the cutter assembly 3 moves to a preset distance, it abuts against the top of the second slide rod 25. As it continues to move downward, it pushes the second slide rod 25 downward. At this time, the second slide rod 25 moves downward relative to the worktable 13, causing the tension spring 26 connected between the worktable 13 and the second slide rod 25 to be stretched and store elastic potential energy. While the second slide rod 25 moves downward, the piston 231 is driven to move through the rotating rod 24 and the first slide rod 232, causing the air pump 23 to inflate the air chamber 213, thereby causing the flexible cylinder 212 to expand and clamp the rubber ring. After the rubber ring is clamped, the tool assembly 3 continues to move to the corresponding processing position for processing. After processing, the tool assembly 3 moves upward and separates from the second slide bar 25. The tension spring 26 contracts under its own elastic restoring force and drives the second slide bar 25 to move upward, so that the second slide bar 25 drives the first slide bar 232 and piston 231 to reset through the rotating rod 24, thereby restoring the clamping mechanism 2 to its initial state. By setting the tension spring 26, the vertical movement of the tool assembly 3 can realize the downward movement of the second slide bar 25, and the elastic restoring effect of the tension spring 26 can realize the automatic reset of the second slide bar 25, so that the clamping and loosening of the rubber ring are linked, reducing the need for additional reset drive structures.

[0030] The main air pipe 22 extends along the axial direction of the insert 21. Multiple air guide pipes 221 are connected to the main air pipe 22. The multiple air guide pipes 221 are spaced apart along the axial direction of the main air pipe 22, and the outlet ends of the multiple air guide pipes 221 are respectively connected to the air chamber 213, so that the gas is diverted through the main air pipe 22 to the multiple air guide pipes 221 and enters the air chamber 213 from multiple positions, thereby making the flexible cylinder 212 expand uniformly in the circumferential and axial directions.

[0031] In practice, depending on the actual situation, the air guide pipe 221 can also be configured to be circumferentially distributed. In this embodiment, during operation, the gas generated by the air pump 23 enters the main air pipe 22 and flows into multiple air guide pipes 221 that are spaced apart along the axial direction. Then, the multiple air guide pipes 221 enter the air chamber 213 from different positions, so that the gas can be dispersed into different areas of the air chamber 213. As the gas continues to enter, each area of ​​the flexible cylinder 212 is subjected to a relatively uniform air pressure and expands outward, so that the inner wall of the rubber ring is supported at different positions. By diverting the gas supply through multiple air guide pipes 221, the situation of local expansion of the flexible cylinder 212 caused by the concentrated gas entering a single area can be reduced, making the expansion of the flexible cylinder 212 more uniform, improving the stability of the rubber ring's internal support and clamping, and reducing the possibility of local deformation of the rubber ring under stress.

[0032] The insert 21 is shaped like a frustum of a cone. The outer diameters of the rigid cylinder 211 and the flexible cylinder 212 gradually change in the vertical direction, so that the insert 21 has different outer diameters in the vertical direction. When the rubber ring is sleeved on the outside of the insert 21, it can move in the vertical direction to a position that matches its inner ring according to its inner ring size, and the rubber ring is internally supported and clamped by the expansion of the flexible cylinder 212.

[0033] In practice, depending on the actual situation, the insert 21 can also be set in a stepped shape. In this embodiment, since the insert 21 has different outer diameters along the vertical direction, when installing rubber rings with different inner ring sizes, the rubber ring can be moved along the axial direction of the insert 21 to a position that matches its inner ring, and then the rubber ring can be internally supported and clamped by the inflation of the flexible cylinder 212. Through the cooperation of the frustum-shaped insert 21 and the flexible cylinder 212, the same clamping mechanism 2 can adapt to rubber rings with different inner ring sizes, reducing the operation of changing clamps. At the same time, the flexible cylinder 212 can provide elastic support to the inner wall of the rubber ring, improving the clamping stability of rubber rings of different specifications.

[0034] The outer circumferential surface of the flexible cylinder 212 is provided with multiple outwardly protruding support protrusions 214. The multiple support protrusions 214 are distributed at intervals along the circumference and axial direction of the flexible cylinder 212, and a processing clearance space is formed between adjacent support protrusions 214.

[0035] In practice, depending on the actual situation, the support protrusions 214 can also be configured as strip-shaped protrusions. In this embodiment, when the flexible cylinder 212 is inflated, multiple support protrusions 214 move outward with the flexible cylinder 212 and abut against the inner wall of the rubber ring, providing dispersed support to the rubber ring from multiple positions, while a processing clearance space is formed between adjacent support protrusions 214. When drilling is performed, the drilling position can be aligned with the processing clearance space, allowing the drilling tool to pass through the rubber ring and enter the processing clearance space, thereby avoiding direct contact with the flexible cylinder 212. Thus, the support protrusions 214 can be used to maintain the inner support positioning of the rubber ring, while also providing a clearance position for the drilling tool, reducing the possibility of damaging the flexible cylinder 212 during drilling, making the clamping mechanism 2 suitable for composite processing of rubber rings that includes drilling.

[0036] The clamping mechanism 2 also includes two pressure rods 27 and a power drive assembly 28 for driving the two pressure rods 27 to move. The two pressure rods 27 are respectively disposed on both sides of the insert 21. The frame 1 is provided with a U-shaped guide path corresponding to the two pressure rods 27. The two pressure rods 27 are slidably connected to the corresponding U-shaped guide path. The power drive assembly 28 is driven to the two pressure rods 27 to drive the two pressure rods 27 to move along the corresponding U-shaped guide path. The side of the U-shaped guide path near the insert 21 is set as an inclined section. When the pressure rod 27 moves to the inclined section, the pressure rod 27 gradually approaches the insert 21 and moves downward to press against the upper surface of the rubber ring.

[0037] In practice, the power drive assembly 28 can also be a cylinder, depending on the actual situation. In this embodiment, during operation, the power drive assembly 28 drives the two pressure rods 27 to move along the corresponding U-shaped guide path. When the pressure rods 27 move to the inclined section near the insertion cylinder 21, under the guidance of the inclined section, the pressure rods 27 gradually approach the insertion cylinder 21 and move downwards at the same time until they press against the upper surface of the rubber ring. At this time, the flexible cylinder 212 provides radial support from the inside of the rubber ring, and the two pressure rods 27 press down and position from above the rubber ring, thereby forming a combined radial and axial positioning effect on the rubber ring, limiting the axial movement or warping generated during the processing of the rubber ring, and improving the processing stability. After processing, the pressure rods 27 return along the U-shaped guide path and move away from the rubber ring so that the processed rubber ring can be removed.

[0038] The main air pipe 22 extends upward along the axial direction of the rigid cylinder 211. The top of the main air pipe 22 extends to the top of the flexible cylinder 212 and abuts against the top of the flexible cylinder 212 to support the top of the flexible cylinder 212 so that the flexible cylinder 212 can maintain a predetermined shape when it is inflated.

[0039] In practice, depending on the actual situation, the top of the flexible cylinder 212 can also be supported by a support block. In this embodiment, when gas enters the gas chamber 213 and causes the flexible cylinder 212 to expand, the top of the main gas pipe 22 provides support to the top of the flexible cylinder 212, limiting the top of the flexible cylinder 212 from collapsing inward or undergoing excessive deformation, thus enabling the flexible cylinder 212 to maintain a relatively stable expansion shape. This improves the structural stability of the top of the flexible cylinder 212, allowing it to continuously support the inner wall of the rubber ring during clamping and subsequent processing, thereby improving the clamping reliability and processing stability of the rubber ring.

[0040] In this embodiment, during operation, the rubber ring to be processed is first fitted onto the outside of the insert 21, and then moved along the axial direction of the frustum-shaped insert 21 to a suitable position according to the inner ring size of the rubber ring. Subsequently, the multi-axis linkage mechanism is activated, and the vertical drive assembly 4 drives the cutter assembly 3 downwards. After the cutter assembly 3 moves to a preset position, it abuts against the top of the second slide rod 25, and pushes the second slide rod 25 downwards during its continued downward movement. When the second slide rod 25 moves downwards, it stretches the tension spring 26, and simultaneously drives the first slide rod 232 to move via the rotating rod 24, causing the piston 231 inside the air pump 23 to reciprocate. The generated gas is transported to the annular air chamber 213 via the main air pipe 22, and enters the air chamber 213 from different positions through multiple air guide pipes 221, causing the flexible cylinder 212 to gradually and uniformly expand. After the flexible cylinder 212 expands, the support protrusion 214 on its outer circumference abuts against the inner wall of the rubber ring, thereby radially supporting and clamping the rubber ring. Simultaneously, the power drive assembly 28 drives the two pressure rods 27. Moving along the U-shaped guide path, when the pressure rod 27 enters the inclined section near the insert 21, it gradually approaches the insert 21 and moves downward, finally pressing against the upper surface of the rubber ring, thereby further restricting the axial movement and tilting of the rubber ring, so that the rubber ring obtains stable radial and axial positioning; after clamping, the tool assembly 3 continues to move along the predetermined trajectory under the action of the multi-axis drive assembly, and performs machining such as turning, grooving, chamfering and drilling on the rubber ring in sequence according to the processing requirements. The drilling position corresponds to the machining clearance space between the support protrusions 214 to avoid direct contact between the drilling tool and the flexible cylinder 212; after processing, the tool assembly 3 moves upward and separates from the second slide rod 25. The tension spring 26 contracts under the action of elastic restoring force and drives the second slide rod 25 to return upward, so that the air pump 23 and piston 231 return to the initial state. At the same time, the flexible cylinder 212 releases its expansion, and the pressure rod 27 returns along the guide path and releases its downward pressure, thereby completing the automatic loosening of the rubber ring, making it easy to take out the processed rubber ring.

[0041] The above provides a detailed description of a multi-axis linkage automatic lathe composite machining mechanism provided by the present invention. The specific embodiments described are merely for the purpose of helping to understand the method and core ideas of the present invention. It should be noted that those skilled in the art can make various improvements and modifications to the present invention without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. A multi-axis linkage automatic lathe composite machining mechanism, characterized in that: Includes a frame (1), in which an upper cavity (11) and a lower cavity (12) are provided, and a worktable (13) is provided between the upper cavity (11) and the lower cavity (12). The upper cavity (11) is provided with a clamping mechanism (2) for clamping a rubber ring and a tool assembly (3) for processing the rubber ring. The tool assembly (3) is connected to a multi-axis linkage mechanism provided in the upper cavity (11). The clamping mechanism (2) includes a tube (21), which includes a rigid tube (211) and a flexible tube (212). The bottoms of the rigid tube (211) and the flexible tube (212) are fixedly connected to the workbench (13). The flexible tube (212) is spaced outside the rigid tube (211). A closed annular air chamber (213) is formed between the rigid tube (211) and the flexible tube (212). A main air pipe (22) is provided inside the rigid tube (211). An air pump (23) is provided below the tube (21) in the lower cavity (12). One end of the main air pipe (22) is connected to the air chamber (213), and the other end is connected to the air pump (23). The air pump (23) is equipped with a piston (231). The bottom of the piston (231) is provided with a first slide rod (232) extending outward from the air pump (23) and slidably connected thereto. The lower cavity (12) is equipped with a rotating rod (24). The middle part of the rotating rod (24) is rotatably connected to the frame (1). The bottom of the first slide rod (232) is rotatably and slidably connected to one end of the rotating rod (24). The lower cavity (12) is equipped with a second slide rod (25). The other end of the rotating rod (24) is slidably and rotatably connected to the second slide rod (25). The second slide rod (25) extends to the upper cavity (11) and is slidably connected to the worktable (13). The multi-axis linkage mechanism is connected to the second slide rod (25) to drive the second slide rod (25) to move back and forth in the vertical direction. The second slide rod (25) drives the first slide rod (232) to move back and forth through the rotating rod (24) so ​​that the piston (231) moves back and forth in the air pump (23) and inflates the air chamber (213), thereby expanding the flexible cylinder (212) and radially supporting and clamping the rubber ring sleeved on the outside of the insert (21).

2. The multi-axis linkage automatic lathe composite machining mechanism according to claim 1, characterized in that: The multi-axis linkage mechanism includes a multi-axis drive assembly for driving the tool assembly (3) to move in multiple directions. The multi-axis drive assembly includes a vertical drive assembly (4) for driving the tool assembly (3) to move vertically. The tool assembly (3) is connected to the vertical drive assembly (4). The top of the second slide rod (25) is located on the vertical movement path of the tool assembly (3). After the tool assembly (3) moves downward a preset distance, it abuts against the top of the second slide rod (25) and continues to move downward. When moving downwards, the second slide bar (25) is pushed downwards. A tension spring (26) is provided in the lower cavity (12). The tension spring (26) is wound around the second slide bar (25). One end of the tension spring (26) is connected to the worktable (13) and the other end is connected to the second slide bar (25). When the second slide bar (25) moves downwards, the tension spring (26) is stretched. The tension spring (26) is used to retract and drive the second slide bar (25) to return to its original position after the tool assembly (3) separates from the second slide bar (25).

3. The multi-axis linkage automatic lathe composite machining mechanism according to claim 1, characterized in that: The main air pipe (22) extends along the axial direction of the insert (21). Multiple air guide pipes (221) are connected to the main air pipe (22). The multiple air guide pipes (221) are spaced apart along the axial direction of the main air pipe (22), and the outlet ends of the multiple air guide pipes (221) are respectively connected to the air chamber (213) so that the gas is diverted through the main air pipe (22) to the multiple air guide pipes (221) and enters the air chamber (213) from multiple positions, thereby making the flexible cylinder (212) expand uniformly in the circumferential and axial directions.

4. The multi-axis linkage automatic lathe composite machining mechanism according to claim 1, characterized in that: The insert (21) is generally shaped like a frustum of a cone. The outer diameter of the rigid cylinder (211) and the flexible cylinder (212) gradually changes in the vertical direction so that the insert (21) has different outer diameter dimensions in the vertical direction. When the rubber ring is sleeved on the outside of the insert (21), it can move in the vertical direction to a position that matches its inner ring according to its inner ring size, and the rubber ring is internally supported and clamped by the expansion of the flexible cylinder (212).

5. The multi-axis linkage automatic lathe composite machining mechanism according to claim 1, characterized in that: The outer circumferential surface of the flexible cylinder (212) is provided with a plurality of outwardly protruding support protrusions (214). The plurality of support protrusions (214) are distributed at intervals along the circumferential and axial directions of the flexible cylinder (212), and a processing clearance space is formed between adjacent support protrusions (214).

6. The multi-axis linkage automatic lathe composite machining mechanism according to claim 1, characterized in that: The clamping mechanism (2) further includes two pressure rods (27) and a power drive assembly (28) for driving the two pressure rods (27) to move. The two pressure rods (27) are respectively disposed on both sides of the insert (21). The frame (1) is provided with a U-shaped guide path corresponding to the two pressure rods (27). The two pressure rods (27) are slidably connected to the corresponding U-shaped guide path. The power drive assembly (28) is connected to the two pressure rods (27) to drive the two pressure rods (27) to move along the corresponding U-shaped guide path. The side of the U-shaped guide path near the insert (21) is set as an inclined section. When the pressure rod (27) moves to the inclined section, the pressure rod (27) gradually approaches the insert (21) and moves downward to press against the upper surface of the rubber ring.

7. The multi-axis linkage automatic lathe composite machining mechanism according to claim 1, characterized in that: The main air pipe (22) extends upward along the axial direction of the rigid cylinder (211), and the top of the main air pipe (22) extends to the top position of the flexible cylinder (212) and abuts against the top of the flexible cylinder (212) to support the top of the flexible cylinder (212) so that the flexible cylinder (212) can maintain a predetermined shape when it is inflated.

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