A multi-head composite boring and milling cutter module for cylinder processing

Abstract

The present application relates to the technical field of oil cylinder barrel precision machining equipment and cutter, and discloses a cutter module with multiple heads for cylinder barrel machining and capable of composite boring, honing and rolling, which comprises a connecting end, a first cutter seat and a second cutter seat integrally formed at the end of the connecting end, first roller pressing columns and second roller pressing columns are arranged on the outer wall of the first cutter seat in the forward and backward staggered mode along the feeding direction, and a fine boring cutter and a rough boring cutter are arranged on the outer wall of the second cutter seat in the forward and backward staggered mode along the feeding direction.The rough boring cutter, the fine boring cutter, the first roller pressing column and the second roller pressing column are integrated on the first cutter seat and the second cutter seat of the same cutter module to form an integrated composite machining structure, so that the rough boring, the fine boring and the roller pressing, which are three core processes in the cylinder barrel machining process, are completed through one-time clamping positioning and one-time feeding, the problems of the traditional machining process breaking and the complicated process connection are solved, the machining period of a single cylinder barrel is greatly shortened, and the overall production efficiency is significantly improved.

Description

Technical Field

[0001] This invention belongs to the field of precision machining equipment and cutting tools for hydraulic cylinder barrels, specifically relating to a multi-head composite boring and rolling cutting tool module for cylinder barrel machining. Background Technology

[0002] Hydraulic support columns and jacks are important components of mining supports. The dimensional accuracy of the inner diameter of the cylinder is one of the most important dimensional characteristics of the entire hydraulic cylinder. To obtain a high-precision cylinder inner diameter, multiple processing steps are required, the most important of which are boring and rolling.

[0003] In the existing technology, the first step is to use a rough boring tool to perform preliminary rough boring of the cylinder inner hole. After completion, the worker needs to manually change the tool and then perform fine boring to improve the dimensional accuracy and surface roughness of the inner hole. After fine boring, the tool needs to be changed again for the first roll forming process (cold extrusion of the hole wall by a roll forming tool to strengthen the surface). Finally, a high-precision roll forming head is needed to complete the final fine roll forming process. Throughout the process, the worker needs to change tools with different functions multiple times, and the lathe also needs to perform multiple machining feed actions. This method results in very low processing efficiency, which consumes more processing time and increases the cost of manual operation, ultimately increasing both the production time and labor costs of the product. Summary of the Invention

[0004] This invention provides a multi-head composite boring and rolling tool module for cylinder machining, which solves the technical problem in related technologies that require multiple machining feed actions when changing tools with different functions and lathes, resulting in very low machining efficiency and wasting more machining time.

[0005] This invention provides a multi-head composite boring and rolling tool module for cylinder machining, including a connecting end, a first tool holder and a second tool holder integrally formed at the end, a first rolling column and a second rolling column are staggered on the outer wall of the first tool holder along the feed direction, and a rough boring tool and a fine boring tool are staggered on the outer wall of the second tool holder along the feed direction.

[0006] A composite cleaning mechanism is detachably connected between the first and second cutter holders. The composite cleaning mechanism includes a first plate and a second plate connected by bolts. An absorption mechanism is provided inside the first plate, and an installation end face is provided at the junction of the first plate and the absorption mechanism. A scraping mechanism is provided inside the second plate. The absorption mechanism is used to suck up the debris scraped off by the scraping mechanism.

[0007] In a preferred embodiment, hexagonal mating blocks are provided on the upper surface of the first plate and the lower surface of the second plate. The two hexagonal mating blocks are respectively inserted into the interior of the first tool holder and the second tool holder. The surface of the first tool holder has accommodating grooves that are staggered and evenly spaced along its circumference. The first roller and the second roller are rotatably installed inside the accommodating grooves. A bearing seat is fixedly installed at the bottom of the accommodating groove. A positioning rod is inserted into the interior of the first tool holder. The positioning rod is rotatably connected to the first roller and the second roller. A limit ring is sleeved between the end of the positioning rod and the first tool holder.

[0008] In a preferred embodiment, the interior of the first plate and the interior of the hexagonal mating block are provided with a connected air intake channel. The air intake end of the air intake channel is located inside the mounting end face. The absorption mechanism is detachably installed at the connection between the air intake channel and the mounting end face. The interior of the first knife holder is provided with a heat dissipation hole. The heat dissipation hole is connected to the receiving groove, and the other end of the heat dissipation hole is connected to the air intake channel. The air outlet end of the heat dissipation hole is connected to the negative pressure device through a pneumatic rotary joint.

[0009] In a preferred embodiment, the absorption mechanism includes a positioning plate and a movable tube. The positioning plate is fixedly installed on the end face of the mounting end face by bolts. A connecting tube is provided on one side of the positioning plate. The connecting tube is inserted into the air inlet of the air intake channel. The movable tube is slidably disposed on the inner wall of the air intake channel. The movable tube and the connecting tube are located on the same axis.

[0010] In a preferred embodiment, one end of the movable tube is provided with a plurality of scrapers at equal intervals along the circumference, the scrapers being in contact with the inner wall of the air intake channel, and the other end of the movable tube is provided with an extension tube along the axial direction, the extension tube being inserted into the interior of the connecting tube, and a spring being fixedly connected between the movable tubes, with the spring being sleeved on the outer wall of the extension tube.

[0011] In a preferred embodiment, cavities for accommodating the scraping mechanism are provided inside the first plate and the second plate. The cavities are T-shaped, and each end of the cavity penetrates the first plate. A rectangular protrusion is provided on the inner wall of the central region of the cavity, and a limiting plate is provided on the inner wall of one end of the cavity.

[0012] In a preferred embodiment, the scraping mechanism includes two symmetrically arranged movable rods, and the ends of the two movable rods are connected by another spring. The movable rods are slidably disposed inside the cavity, and the ends of the movable rods are fixedly connected to positioning heads. The ends of the movable rods are disposed at the edge of the second plate.

[0013] In a preferred embodiment, the positioning end is a split type and connected by screws. One of the positioning ends is provided with a docking rod. An elastic scraper ring is sleeved on the outer wall of the docking rod. The docking rod is in a vertical state and contacts the inner wall of the cylinder.

[0014] In a preferred embodiment, a transmission block is provided between the two movable rods, and a spring for connecting the movable rods passes through the transmission block. A strip-shaped hole is provided at the junction of the transmission block and the spring, and a triangular inclined surface is provided at the junction of the transmission block and the movable rod, with the two triangular inclined surfaces being symmetrically arranged.

[0015] In a preferred embodiment, the transmission block has a rectangular hole inside, and the transmission block is sleeved on the outer wall of the rectangular protrusion through the rectangular hole. A threaded rod is rotatably installed inside the rectangular protrusion, and the threaded rod is threadedly connected to the transmission block. The end of the threaded rod is rotatably installed inside the limiting plate.

[0016] The beneficial effects of this invention are as follows:

[0017] 1. This invention integrates the rough boring tool, fine boring tool, first roller pressing column, and second roller pressing column onto the first and second tool holders of the same tool module, forming an integrated composite machining structure. This enables the three core processes of rough boring, fine boring, and roller pressing in cylinder machining to be completed in a single clamping and positioning and a single feed. Unlike traditional machining methods, there is no need for multiple machine stops to change tools with different functions, nor is there a need for separate feed adjustments and repeated feed operations for each process. This not only fundamentally solves the problems of broken processes and cumbersome process connections in traditional machining, but also significantly shortens the machining cycle of a single cylinder and significantly improves overall production efficiency. Furthermore, it avoids positioning errors caused by multiple clamping and cumulative errors caused by multiple feeds, effectively ensuring the consistency of cylinder machining accuracy and better meeting the needs of large-scale production for efficient and high-precision machining.

[0018] 2. This invention precisely sets up a composite cleaning mechanism between the boring and rolling processes. The adjustable elastic scraper ring in the scraping mechanism actively scrapes away residual iron filings adhering to the inner wall of the cylinder. Combined with the negative pressure adsorption of the absorption mechanism, the scraped iron filings are quickly discharged, achieving thorough removal of iron filings. This fundamentally prevents residual iron filings from scratching and wearing the rolling tools during subsequent rolling processes, as well as scratching the machined surface of the cylinder inner wall, ensuring the quality of the rolling process. Simultaneously, the heat dissipation holes in the first tool holder are interconnected with the air intake channel of the composite cleaning mechanism. During the negative pressure chip suction process, the airflow can simultaneously remove the heat generated by the high-speed rotation of the tool module and the rolling process, effectively reducing surface softening and wear of the rolling components due to high temperatures. This significantly improves the overall service life of the tool module and reduces production consumable costs. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0020] Figure 2 This is a schematic diagram showing the disassembled structure of the first tool holder, the second tool holder, and the composite cleaning mechanism of the present invention.

[0021] Figure 3 This is a schematic diagram of the disassembled structure of the first cutter holder, the first roller pressing column, and the second roller pressing column of the present invention.

[0022] Figure 4 This is a schematic diagram of the first tool holder half-section structure of the present invention.

[0023] Figure 5 This is a schematic diagram of the disassembled structure of the first plate, the second plate, and the scraping mechanism of the present invention.

[0024] Figure 6 This is a schematic diagram of the internal structure of the second plate of the present invention.

[0025] Figure 7 This is a schematic diagram of the planar structure of the scraping mechanism of the present invention.

[0026] Figure 8 This is a schematic diagram of the internal structure of the first plate body in half section according to the present invention.

[0027] Figure 9 This is a three-dimensional structural diagram of the positioning plate and movable tube of the present invention.

[0028] Figure 10 This is a schematic diagram showing the structural changes of the scraping mechanism of the present invention.

[0029] In the diagram: 1. Connecting end; 2. First tool holder; 21. Receiving groove; 22. Bearing seat; 23. Heat dissipation hole; 24. Limiting ring; 25. Positioning rod; 3. Second tool holder; 4. Composite cleaning mechanism; 41. First plate; 42. Second plate; 43. Hexagonal mating block; 44. Mounting end face; 45. Suction channel; 46. Absorption mechanism; 461. Positioning plate; 462. Movable tube; 463. Connecting tube; 46 4. Scraper; 465. Extension tube; 466. Spring; 47. Scraping mechanism; 471. Movable rod; 472. Positioning end; 473. Connecting rod; 474. Elastic scraper ring; 475. Transmission block; 476. Threaded rod; 477. Rectangular hole; 478. Triangular bevel; 48. Rectangular protrusion; 49. Limiting plate; 410. Cavity; 5. Fine boring tool; 6. Rough boring tool; 7. First roller; 8. Second roller. Detailed Implementation

[0030] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0031] Example 1

[0032] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a multi-head composite boring and rolling tool module for cylinder machining includes a connecting end 1, a first tool holder 2 and a second tool holder 3 integrally formed at its end. The outer wall of the first tool holder 2 is provided with a first roller pressing column 7 and a second roller pressing column 8 arranged alternately in the feed direction. The outer wall of the second tool holder 3 is provided with a rough boring tool 6 and a fine boring tool 5 arranged alternately in the feed direction.

[0033] A composite cleaning mechanism 4 is detachably connected between the first cutter holder 2 and the second cutter holder 3. The composite cleaning mechanism 4 includes a first plate 41 and a second plate 42 connected by bolts. An absorption mechanism 46 is provided inside the first plate 41. An installation end face 44 is provided at the junction of the first plate 41 and the absorption mechanism 46. A scraping mechanism 47 is provided inside the second plate 42. The absorption mechanism 46 is used to suck up the debris scraped off by the scraping mechanism 47.

[0034] In this embodiment, the specific implementation scenario is as follows: The entire composite tool module consists of a first tool holder 2, a second tool holder 3, and a composite cleaning mechanism 4. During use, the connecting end 1 is connected to the power mechanism, driving the first tool holder 2 and the second tool holder 3 to rotate at high speed. During the feed process, the rough boring tool 6 first contacts the cylinder to complete the rough boring. The fine boring tool 5 immediately follows and performs fine boring on the cylinder to complete the boring operation. This saves the time of changing the boring tool. Afterward, the composite cleaning mechanism 4 cleans the inner wall of the cylinder and then performs roll forming. During roll forming, the first roll forming column 7 first rolls the inner wall of the cylinder. During the subsequent feed process, the second roll forming column 8 performs secondary roll forming simultaneously, thus saving the time of changing the roll forming tool.

[0035] It should be noted that the working principle of the roller pressing tool is to perform cold extrusion plastic deformation on the inner wall of the metal hole through rollers. However, iron filings will inevitably be generated during boring. Some of the detached iron filings will adhere to the inner wall of the hole and cannot be washed away by the cutting fluid. During the rolling process, the iron filings remaining will scratch the roller pressing rollers, scratch the workpiece hole wall, and accelerate the wear of the rollers. Therefore, this application provides a composite cleaning mechanism 4 to clean the metal filings, and the cleaning process is set between boring and rolling. The main mounting carriers of the composite cleaning mechanism 4 are the first plate 41 and the second plate 42, wherein the first plate... The body 41 is equipped with an absorption mechanism 46 that communicates with an external negative pressure device. The second plate 42 is equipped with a scraping mechanism 47 that scrapes away the debris remaining on the inner wall of the cylinder. The first plate 41 is equipped with a mounting end face 44, which separates the absorption mechanism 46 from the cylinder by a certain distance to ensure sufficient space to absorb the debris. During the rotation of the entire tool module, the scraping mechanism 47 cleans away the debris generated in the boring process from the inner wall of the cylinder to avoid damage to the roller tool and the inner wall of the cylinder by metal debris during the subsequent rolling process.

[0036] The reasons for adopting negative pressure absorption are as follows: If a cleaning scheme using high-pressure gas in conjunction with cutting fluid is used, the following problems are likely to occur in closed and semi-closed environments: First, high-pressure gas can easily blow small-diameter debris into the depth of the hole wall or the blind area of ​​the machining process, forming secondary residues that are difficult to remove completely and still pose a risk of scratching the rollers and the hole wall; Second, during gas-liquid co-jet, the impact force of the gas will change the flow direction of the cutting fluid, making it difficult for the cutting fluid to accurately reach the subsequent cutting area and failing to fully exert its cooling and auxiliary cleaning effects. Therefore, this application adopts negative pressure adsorption to clean debris.

[0037] Example 2

[0038] like Figure 3 and Figure 4As shown, since this application adopts a combined cutting tool mode, insufficient lubrication can easily lead to dry friction and high temperature during use. High temperature will soften the roller surface. This application provides an embodiment in which hexagonal mating blocks 43 are provided on the upper surface of the first plate 41 and the lower surface of the second plate 42. The two hexagonal mating blocks 43 are respectively inserted into the interior of the first tool holder 2 and the second tool holder 3. The surface of the first tool holder 2 has accommodating grooves 21 that are staggered vertically and evenly spaced along its circumference. The first roller pressing column 7 and the second roller pressing column 8 are rotatably installed inside the accommodating grooves 21. A bearing seat 22 is fixedly installed at the bottom of the accommodating groove 21. A bearing seat 22 is inserted into the interior of the first tool holder 2. The positioning rod 25 is rotatably connected to the first roller pressing column 7 and the second roller pressing column 8. The end of the positioning rod 25 is sleeved with a limit ring 24 between it and the first cutter holder 2. The interior of the first plate 41 and the interior of the hexagonal docking block 43 are provided with a connected air intake channel 45. The air inlet end of the air intake channel 45 is located inside the mounting end face 44. The absorption mechanism 46 is detachably installed at the connection between the air intake channel 45 and the mounting end face 44. The interior of the first cutter holder 2 is provided with a heat dissipation hole 23. The heat dissipation hole 23 is connected to the receiving groove 21, and the other end of the heat dissipation hole 23 is connected to the air intake channel 45. The air outlet end of the heat dissipation hole 23 is connected to the negative pressure equipment through a pneumatic rotary joint.

[0039] In this embodiment, the specific implementation scenario is as follows: the first plate 41 and the second plate 42 are respectively connected to the first tool holder 2 and the second tool holder 3 through hexagonal docking blocks 43, ensuring the overall rigidity of the tool and enabling rapid heat transfer. During use, the receiving groove 21 determines the position of the first roller pressing column 7 and the second roller pressing column 8, and high-temperature grease is injected into the bearing seat 22 to reduce insufficient lubrication. During use, the positioning rod 25 is inserted into the first roller pressing column 7 and the second roller pressing column 8 to ensure overall rigidity and not affect the rolling process. A limit ring 24 is set at the top of the positioning rod 25 to improve structural stability. During the rolling and debris removal process, the external negative pressure equipment continuously absorbs air from the cylinder through negative pressure to achieve the purpose of absorbing debris. In addition, during the absorption process, the air in the cylinder is also absorbed through the air intake channel 45 and the heat dissipation hole 23, thereby simultaneously dissipating the heat on the entire tool module and effectively improving the service life of the tool module.

[0040] Example 3

[0041] like Figure 3 , Figure 4 , Figure 8 and Figure 9As shown, when the negative pressure device absorbs metal debris inside the cylinder, some of the debris becomes coiled due to the machining of the boring tool. This type of debris can easily cause blockage when it enters the suction channel 45. Therefore, this application provides an embodiment in which the absorption mechanism 46 includes a positioning plate 461 and a movable tube 462. The positioning plate 461 is fixedly mounted on the end face of the mounting end face 44 by bolts. A connecting tube 463 is provided on one side of the positioning plate 461, and the connecting tube 463 is inserted into the air inlet of the suction channel 45. The movable tube 462 is slidably disposed on the inner wall of the air intake channel 45. The movable tube 462 and the connecting tube 463 are located on the same axis. One end of the movable tube 462 is provided with multiple scrapers 464 at equal intervals along the circumference. The scrapers 464 are in contact with the inner wall of the air intake channel 45. The other end of the movable tube 462 is provided with an extension tube 465 along the axial direction. The extension tube 465 is inserted into the inside of the connecting tube 463. A spring 466 is fixedly connected between the movable tubes 462, and the spring 466 is sleeved on the outer wall of the extension tube 465.

[0042] In this embodiment, the specific implementation scenario is as follows: the absorption mechanism 46 is mainly set in the first plate 41, wherein the positioning plate 461 is fixed at the mounting end face 44, and the connecting pipe 463 set on one side is inserted into the suction channel 45 to improve its structural stability. The positioning plate 461 is used to protect the suction channel 45 to prevent it from being scratched by metal debris and affecting the absorption effect. The movable pipe 462 is set inside the suction channel 45. In the initial state, the movable pipe 462 is pushed inside the suction channel 45 by the spring 466. When the rotation speed of the tool module increases, the centrifugal force gradually increases. When the centrifugal force exceeds the supporting force of the spring 466, the movable tube 462 will move towards the positioning plate 461. During this process, the spring 466 will be compressed. When the rotation speed of the tool module slows down, the centrifugal force decreases, and the restoring force of the spring 466 will push the movable tube 462 to move in the opposite direction. Through the reciprocating movement of the movable tube 462, the debris in the suction channel 45 can be cleaned, thereby solving the problem of pipe blockage. The specific operation method is that during the processing, the movable tube 462 can be moved back and forth in the suction channel 45 by slowing down or speeding up the rotation speed of the tool module for a certain period of time.

[0043] It should be further explained that the scraper 464 and extension tube 465, which are respectively set at both ends of the movable tube 462, are used to push metal debris and protect the spring 466. The length of the extension tube 465 is adapted to the length of the spring 466. When the metal debris enters the suction channel 45, it will not come into contact with the spring 466, thereby ensuring that the performance of the spring 466 will not be affected. During the movement of the movable tube 462, the extension tube 465 can also push the debris blocked in the connecting tube 463, and together with the scraper 464, it plays an auxiliary role in clearing the blockage.

[0044] Example 4

[0045] like Figure 5 , Figure 6 , Figure 7 and Figure 10 To ensure normal processing is not affected, the dimensions of the first plate 41 and the second plate 42 must be consistent with the first tool holder 2 and the second tool holder 3, and the overall dimensions cannot be adjusted. However, in actual processing, the boring dimensions of cylinders of different sizes are also different, causing the composite cleaning mechanism 4 to be unable to adapt to larger cylinders. Therefore, this application provides an embodiment in which cavities 410 for accommodating the scraping mechanism 47 are provided inside the first plate 41 and the second plate 42. The cavity 410 is T-shaped, and each end of the cavity 410 penetrates the first plate 41. A rectangular protrusion 48 is provided on the inner wall of the central area of ​​the cavity 410, and a limit plate 49 is provided on the inner wall of one end of the cavity 410. The scraping mechanism 47 includes two symmetrically arranged movable rods 471, and the ends of the two movable rods 471 are connected by another spring 466. The movable rods 471 are slidably disposed inside the cavity 410, and a positioning end 4 is fixedly connected to the end of the movable rod 471. 72. The end of the movable rod 471 is located at the edge of the second plate 42. The positioning end 472 is a split type and connected by screws. One of the positioning ends 472 is provided with a connecting rod 473. An elastic scraper ring 474 is sleeved on the outer wall of the connecting rod 473. The connecting rod 473 is in a vertical state and contacts the inner wall of the cylinder. A transmission block 475 is provided between the two movable rods 471, and a spring 466 for connecting the movable rods 471 passes through the transmission block 475. The transmission block 475 and the spring A strip-shaped hole is provided at the junction of 466. A triangular inclined surface 478 is provided at the junction of the transmission block 475 and the movable rod 471, and the two triangular inclined surfaces 478 are symmetrically arranged. A rectangular hole 477 is provided inside the transmission block 475. The transmission block 475 is sleeved on the outer wall of the rectangular protrusion 48 through the rectangular hole 477. A threaded rod 476 is rotatably installed inside the rectangular protrusion 48. The threaded rod 476 is threadedly connected to the transmission block 475. The end of the threaded rod 476 is rotatably installed inside the limiting plate 49.

[0046] In this embodiment, the specific implementation scenario is as follows: the scraping mechanism 47 is set in the cavity 410, with two movable rods 471 symmetrically arranged. The movable rods 471 are mainly used to control the position of the positioning end 472. When it is necessary to extend the positioning end 472 a certain distance, the threaded rod 476 set on the limiting plate 49 can be rotated to drive the transmission block 475. The triangular inclined surface 478 of the transmission block 475 is used to push the two movable rods 471 outward at the same time, thereby achieving the purpose of adjusting the cleaning range. Furthermore, the presence of the triangular inclined surface 478 means that two inclined surfaces are in contact with the movable rods 471. Therefore, the purpose of pushing the movable rods 471 can be achieved no matter which direction the threaded rod 476 is rotated. This method can greatly speed up the adjustment speed, thereby shortening the time required to adjust the composite cleaning mechanism 4. When the end of the movable rod 471 is aligned with the groove of the triangular inclined surface 478, under the tension of the spring 466, the two movable rods 471 move inward at the same time to complete the contraction and achieve the purpose of reducing the cleaning range.

[0047] It should be further explained that the positioning end 472 is used to determine the position of the elastic scraper ring 474. During the rotation of the tool module, the elastic scraper ring 474 contacts the inner wall of the cylinder and scrapes away the debris on the inner wall. The falling debris is immediately sucked out of the cylinder by the absorption mechanism 46, thereby avoiding the debris from scratching the inner wall of the cylinder. After the machining is completed, the positioning end 472 can be disassembled, and the elastic scraper ring 474 can be removed from the docking rod 473 for replacement without disassembling the entire composite cleaning mechanism 4.

[0048] It should also be noted that when the threaded rod 476 is rotated, the rectangular protrusion 48 can determine the movement path of the transmission block 475. The rectangular hole 477 inside the transmission block 475 ensures that it has enough room to adjust the position of the movable rod 471, and can also simultaneously improve the stability of the transmission block 475 to prevent it from shaking and affecting the movable rod 471.

[0049] In the above embodiment, the connecting end 1 of the tool module is first connected to the power mechanism of the processing equipment. According to the size of the cylinder to be processed, the threaded rod 476 in the scraping mechanism 47 is rotated to drive the transmission block 475 to move along the rectangular protrusion 48. The triangular inclined plane 478 is used to push the movable rod 471 to extend and retract, and the position of the elastic scraping ring 474 is adjusted to match the inner diameter of the cylinder.

[0050] Then the cylinder is clamped on the processing equipment, the power mechanism is started to drive the tool module to rotate at high speed and start the feed. During the feed, the rough boring tool 6 on the second tool holder 3 first contacts the cylinder to complete the rough boring, and the fine boring tool 5 that follows immediately completes the fine boring operation.

[0051] After the boring is completed, the tool module continues to feed. The elastic scraper ring 474 of the composite cleaning mechanism 4 rotates with the tool to scrape off the iron filings remaining on the inner wall of the cylinder. At the same time, the external negative pressure equipment is activated to suck in and discharge the scraped debris through the suction channel 45.

[0052] During the processing, if it is necessary to clear the blockage in the air intake channel 45, the speed of the tool module can be adjusted briefly. The centrifugal force and the spring 466 are used to drive the movable tube 462 to move back and forth, and the tube is cleared by the scraper 464 and the extension tube 465.

[0053] After cleaning, the first roller 7 on the first tool holder 2 first rolls the inner wall of the cylinder. When the tool is fed in, the second roller 8 simultaneously completes the second roll. During this process, the air intake channel 45 continuously absorbs the heat from the first roller 7 and the second roller 8 through the heat dissipation hole 23.

[0054] After processing is completed, the detachable positioning end 472 can be replaced with the elastic scraper ring 474 to complete the entire processing flow.

[0055] The embodiments described above are merely examples of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention.

Claims

1. A multi-head composite boring and rolling tool module for cylinder barrel machining, characterized in that, It includes a connecting end (1), a first tool holder (2) and a second tool holder (3) integrally formed at its end. The outer wall of the first tool holder (2) is provided with a first roller pressing column (7) and a second roller pressing column (8) arranged alternately in front and behind along the cutting direction. The outer wall of the second tool holder (3) is provided with a rough boring tool (6) and a fine boring tool (5) arranged alternately in front and behind along the cutting direction. A composite cleaning mechanism (4) is detachably connected between the first cutter holder (2) and the second cutter holder (3). The composite cleaning mechanism (4) includes a first plate (41) and a second plate (42) connected by bolts. An absorption mechanism (46) is provided inside the first plate (41). An installation end face (44) is provided at the junction of the first plate (41) and the absorption mechanism (46). A scraping mechanism (47) is provided inside the second plate (42). The absorption mechanism (46) is used to suck up the debris scraped off by the scraping mechanism (47). The first plate (41) and the second plate (42) each have cavities (410) for accommodating the scraping mechanism (47). The cavities (410) are T-shaped, and each end of the cavity (410) penetrates the first plate (41). A rectangular protrusion (48) is provided on the inner wall of the central region of the cavity (410), and a limit plate (49) is provided on the inner wall of one end of the cavity (410). The scraping mechanism (47) includes two symmetrically arranged movable... A movable rod (471) is provided, and the ends of the two movable rods (471) are connected by another spring (466). The movable rods (471) are slidably disposed inside the cavity (410). The ends of the movable rods (471) are fixedly connected to positioning heads (472). The ends of the movable rods (471) are disposed at the edge of the second plate (42). The positioning heads (472) are split and connected by screws. One of the positioning heads (472) is provided with a connecting rod (466). 473), an elastic scraper ring (474) is sleeved on the outer wall of the connecting rod (473). The connecting rod (473) is in a vertical state and contacts the inner wall of the cylinder. A transmission block (475) is provided between the two movable rods (471), and a spring (466) for connecting the movable rods (471) passes through the transmission block (475). A strip hole is provided at the junction of the transmission block (475) and the spring (466). A groove is provided at the junction of the transmission block (475) and the movable rod (471). There is a triangular inclined surface (478), and the two triangular inclined surfaces (478) are symmetrically arranged. The transmission block (475) has a rectangular hole (477) inside. The transmission block (475) is sleeved on the outer wall of the rectangular protrusion (48) through the rectangular hole (477). A threaded rod (476) is rotatably installed inside the rectangular protrusion (48). The threaded rod (476) is threadedly connected to the transmission block (475). The end of the threaded rod (476) is rotatably installed inside the limiting plate (49).

2. The multi-head composite boring and rolling tool module for cylinder machining according to claim 1, characterized in that, Hexagonal mating blocks (43) are provided on the upper surface of the first plate (41) and the lower surface of the second plate (42). The two hexagonal mating blocks (43) are respectively inserted into the interior of the first tool holder (2) and the interior of the second tool holder (3). The surface of the first tool holder (2) is provided with a receiving groove (21) at equal intervals along its circumference. The first roller pressing column (7) and the second roller pressing column (8) are rotatably installed inside the receiving groove (21). A bearing seat (22) is fixedly installed at the bottom of the receiving groove (21). A positioning rod (25) is inserted into the interior of the first tool holder (2). The positioning rod (25) is rotatably connected to the first roller pressing column (7) and the second roller pressing column (8). A limit ring (24) is sleeved between the end of the positioning rod (25) and the first tool holder (2).

3. The multi-head composite boring and rolling tool module for cylinder machining according to claim 2, characterized in that, The first plate (41) and the hexagonal docking block (43) have interconnected air intake channels (45). The air intake end of the air intake channel (45) is located inside the mounting end face (44). The absorption mechanism (46) is detachably installed at the connection between the air intake channel (45) and the mounting end face (44). The first knife holder (2) has heat dissipation holes (23) inside. The heat dissipation holes (23) are connected to the receiving groove (21), and the other end of the heat dissipation holes (23) is connected to the air intake channel (45). The air outlet end of the heat dissipation holes (23) is connected to the negative pressure device through a pneumatic rotary joint.

4. A multi-head composite boring and rolling tool module for cylinder machining according to claim 3, characterized in that, The absorption mechanism (46) includes a positioning plate (461) and a movable tube (462). The positioning plate (461) is fixedly installed on the end face of the mounting end face (44) by bolts. A connecting tube (463) is provided on one side of the positioning plate (461). The connecting tube (463) is inserted into the air inlet of the air intake channel (45). The movable tube (462) is slidably disposed on the inner wall of the air intake channel (45). The movable tube (462) and the connecting tube (463) are located on the same axis.

5. A multi-head composite boring and rolling tool module for cylinder machining according to claim 4, characterized in that, One end of the movable tube (462) is provided with a plurality of scrapers (464) at equal intervals along the circumference. The scrapers (464) are in contact with the inner wall of the air intake channel (45). The other end of the movable tube (462) is provided with an extension tube (465) along the axial direction. The extension tube (465) is inserted into the inside of the connecting tube (463). A spring (466) is fixedly connected between the movable tubes (462), and the spring (466) is sleeved on the outer wall of the extension tube (465).

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