Diesel engine frame cylinder hole boring device

Abstract

The application relates to a diesel engine frame cylinder hole boring device which comprises a boring equipment composed of a machine table, a machine base, a clamping structure, a guide rail and a boring assembly; the boring assembly is composed of a sliding base, a mounting shaft, a tool holder and a tool; the tool is composed of a tool rod, a rotating seat and a boring tool; the boring device further comprises a cleaning mechanism arranged on the tool holder, the cleaning mechanism is composed of a mounting groove, a driving main shaft, a cleaning piece one and a cleaning piece two, the mounting groove is arranged in the tool holder, the driving main shaft is slidingly arranged in the mounting groove, and the end of the driving main shaft is provided with connecting assemblies which are connected with the tool rod and the cleaning piece one respectively; the cleaning piece one and the cleaning piece two are arranged in the mounting groove, and the cleaning piece one is cleaned through the driving of the driving main shaft. The boring device can effectively solve the problems that the traditional boring equipment is difficult to clean the accumulated burrs and the accumulated burrs on the hole wall after machining, the machining precision is easily affected by impurities, and the tool is difficult to clean.

Description

Technical Field

[0001] This application relates to the field of boring device technology, and in particular to a boring device for cylinder bores on a diesel engine frame. Background Technology

[0002] The machining accuracy and bore quality of the cylinder bores in a diesel engine frame directly affect the overall assembly accuracy, operational sealing, and service life of the diesel engine, making it a key core process in diesel engine precision machining. Currently, traditional diesel engine frame cylinder bore boring equipment on the market has limited functionality. During the rotary boring process, the cutting tool easily generates a large amount of metal chips, burrs, and bore area edge. Due to gravity, most of the thick chips and impurities continuously settle and accumulate at the bottom of the cylinder bore, forming a slag layer.

[0003] Conventional equipment relies solely on simple, fixed-point air blowing for chip removal. This method suffers from weak airflow and a limited cleaning range, failing to effectively remove the thick layer of chips accumulated at the bottom of the hole, resulting in extremely poor chip removal. Residual, accumulated metal debris easily becomes trapped between the scraping structure and the finished hole wall, causing three-dimensional abrasive wear that continuously scratches the machined precision hole wall, leading to excessive hole roughness and surface scratches, severely compromising the quality of the cylinder bore machining. Simultaneously, residual chips interfere with the boring machining datum, making it difficult to guarantee workpiece dimensional and roundness accuracy, significantly reducing the workpiece yield. Furthermore, traditional equipment cannot specifically remove the thick, gravity-deposited chips at the bottom of the hole and lacks a combined scraping and airflow pressurization dust removal structure, failing to address the root cause of residual chips at the bottom of the hole. Therefore, a diesel engine frame cylinder bore boring device is proposed to solve these problems. Summary of the Invention

[0004] Therefore, it is necessary to provide a device for boring cylinder bores on diesel engine frames that can solve the problem of chip accumulation at the bottom of the bore and address incomplete cleaning, in order to solve the aforementioned technical problems.

[0005] To achieve the above objectives, this application provides the following technical solution: a cylinder bore boring device for a diesel engine frame, comprising a boring machine consisting of a machine base, a mounting structure, a guide rail, and a boring assembly; the boring assembly consists of a slide, a mounting shaft, a tool holder, and a cutting tool, wherein the cutting tool consists of a tool holder, a rotating seat, and a boring tool; It also includes a cleaning mechanism disposed on the tool holder. The cleaning mechanism consists of a mounting groove, a drive spindle, a first cleaning component, and a second cleaning component. The mounting groove is opened in the tool holder. The drive spindle is slidably disposed in the mounting groove, and its end is provided with a connecting component that is linked to the tool holder and the first cleaning component respectively. Both cleaning component one and cleaning component two are disposed in the mounting slot. Cleaning component one is used for cleaning by driving the main shaft. At the same time, cleaning component one works in conjunction with cleaning component two during the cleaning process to further enhance the cleaning effect.

[0006] Optionally, the cleaning component includes a fixed seat that is slidably installed inside the mounting groove, an adjusting rod that is installed through the fixed seat, and an abutment plate that is threaded onto the end of the adjusting rod, wherein the abutment plate is arc-shaped and adapted to the inner side of the workpiece.

[0007] Optionally: Both the abutment plate and the adjusting rod have an air supply channel that cooperates with the cleaning component 2. Several air nozzles 1 that are connected to the air supply channel are installed on the side wall of the abutment plate. Each air nozzle 1 has a pressurization zone inside, which consists of an expansion zone and a narrow neck zone in the shape of a trumpet.

[0008] Optionally, the first cleaning component further includes a frame fixed to the outer wall of the abutment plate. A roller is rotatably mounted on the inner side of the frame, and an eccentric wheel connected to the end of the roller is mounted on the outer side of the frame. The outer side of the eccentric wheel abuts against the second cleaning component. The roller is set at the same horizontal level as the abutment plate.

[0009] Optionally, the connecting assembly includes a connecting seat detachably mounted on one end of the drive spindle, and a connecting rod hinged to the fixed seat is mounted on the outer wall of the connecting seat; by extending the drive spindle into the mounting groove, the connecting seat connected to it is synchronously displaced and pushes the connecting rod, the connecting rod pushes the fixed seat downward, so that the abutment plate is displaced and fits against the inner wall of the workpiece, and at the same time the roller also fits against the inner wall of the workpiece, so that the abutment plate can be cleaned when the boring assembly retracts.

[0010] Optionally: A buffer block is fixed on the side of the connecting seat away from the drive spindle. Two interference-fit wedge seats are installed on the top outer surface of the connecting seat. One of the wedge seats is fixed to the bottom end of the tool holder. When the drive spindle extends into the mounting groove, the wedge seat on the drive spindle transitions to the lower surface, realizing the downward movement of the tool so that the subsequent boring assembly can retract.

[0011] Optional: The second cleaning component consists of a first pressure chamber, a second pressure chamber, a pressure rod, a connecting frame, and a three-way pipe. The first pressure chamber is located inside the tool holder, and the second pressure chamber is located inside the drive spindle. The three-way pipe is connected to the first pressure chamber, the second pressure chamber, and the air supply channel, respectively. The outer side of the second pressure chamber is fixedly connected to a second air nozzle extending to the outside of the tool holder and an outer pipe. The air outlet of the second air nozzle faces the tool.

[0012] Optional: The booster rod is slidably sealed inside the booster chamber, and a return spring is installed on the outside of the connecting frame. The end of the booster rod extends to the outside of the tool holder and connects with the connecting frame. The booster rod abuts against the eccentric wheel through the connecting frame to achieve reciprocating motion. During the reciprocating motion of the booster rod, gas is delivered to the gas supply channel and the booster chamber through the three-way pipe. This not only helps to clean the abutment plate but also cleans the tool.

[0013] Optionally: the slide block is slidably mounted on the guide rail, enabling the boring assembly to move; the mounting shaft is fixedly inserted through the interior of the slide block; and the tool holder is fixed to one end of the mounting shaft.

[0014] Optionally: the bottom end of the tool bar is slidably installed inside the tool holder, and a return spring connected to the inner wall of the mounting groove is wound around its bottom outer surface; the boring tool is detachably installed inside the rotating seat, and the rotating seat is rotatably installed on the top of the tool bar; a collection groove is provided inside the machine tool.

[0015] In summary, the present invention has the following beneficial effects: 1. This invention achieves dual cleaning functions of physical scraping and high-pressure air blowing by setting up cleaning component one and cleaning component two in synergy. When the tool is retracted, the arc-shaped abutment plate slides against the hole wall, which can forcibly scrape off the built-up edge, burrs and strongly adhesive metal chips generated during the cutting process, solving the problem that stubborn deposits cannot be removed by simply relying on cutting fluid flushing.

[0016] 2. In this invention, the pressurized airflow generated by the second cleaning component forms a high-speed jet through the pressurization zone of the first air nozzle, which completely blows away the fine impurities after physical scraping away from the hole wall. The two complement each other and effectively reduce the burden on the subsequent honing process.

[0017] 3. In this invention, the connecting component utilizes the wedge-shaped seat to achieve automatic radial retraction of the boring tool while driving the spindle to perform cleaning. This ensures that the tool tip maintains a safe clearance with the machined surface during the tool retraction process, completely avoiding the generation of retraction scratches and preventing the tool tip from chipping due to contact with hard chips. In addition, another high-pressure gas stream from the second cleaning component blows directly onto the tool cutting edge through the second air nozzle, which can promptly remove built-up edge and high-temperature oil stains on the cutting edge in the cutting gap, reducing the accumulation of cutting heat.

[0018] 4. This invention integrates a collection tank inside the machine tool, allowing the cleaned iron filings and dust to fall directly into the collection tank under the guidance of gravity and airflow, effectively preventing the metal dust from scattering in the processing area and protecting precision moving parts such as guide rails and slides from contamination. Attached Figure Description

[0019] Figure 1This is a schematic diagram of the boring equipment in one embodiment; Figure 2 This is a schematic diagram of the boring device from another perspective in one embodiment; Figure 3 This is a schematic diagram of a boring assembly in one embodiment; Figure 4 This is a cross-sectional view of a boring assembly in one embodiment; Figure 5 This is a schematic diagram of the overall cleaning mechanism in one embodiment; Figure 6 This is a cross-sectional view of cleaning component one and cleaning component two in one embodiment; Figure 7 This is a partial structural diagram of cleaning component two in one embodiment; Figure 8 In one embodiment Figure 7 A magnified structural diagram of structure A is shown.

[0020] Explanation of reference numerals in the attached drawings: 1. Boring equipment; 11. Machine base; 12. Machine stand; 13. Clamping structure; 14. Guide rail; 15. Boring assembly; 151. Slide; 152. Mounting shaft; 153. Tool holder; 154. Tool; 1541. Tool shank; 1542. Rotary seat; 1543. Boring tool; 1544. Return spring one; 16. Collection groove; 2. Cleaning mechanism; 21. Mounting groove; 22. Drive spindle; 23. Cleaning component one; 231. Fixed seat; 232. Adjusting rod; 2 33. Abutment plate; 234. Nozzle 1; 235. Frame; 236. Roller; 237. Eccentric wheel; 238. Air supply channel; 239. Pressurization zone; 24. Connecting assembly; 241. Connecting seat; 242. Connecting rod; 243. Buffer block; 244. Wedge seat; 25. Cleaning component 2; 251. Pressurization rod; 252. Connecting frame; 253. Return spring 2; 254. T-pipe; 255. Pressurization chamber 1; 256. Pressurization chamber 2; 257. Nozzle 2; 26. External connecting pipe. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0022] Example 1: like Figures 1-3As shown, this invention provides a cylinder bore boring device for a diesel engine frame. Its core components include a boring device 1 and a cleaning mechanism 2 integrated thereon. The boring device 1 serves as a basic processing platform, comprising a machine base 11 fixed to a foundation or workbench, which acts as the load-bearing base for the entire device. A base 12 is mounted above the machine base 11, and the base 12 integrates a high-precision rotary drive system, such as a torque motor or a servo spindle drive unit. A clamping structure 13 is fixedly connected to the output end of the base 12. The clamping structure 13 can be a hydraulic expansion mandrel or a three-jaw or four-jaw self-centering chuck, used for positioning and radially locking the cylinder bore portion of the diesel engine frame workpiece. A guide rail 14 extending horizontally is also fixed on the machine base 11, and the precision level of the guide rail 14 must meet or exceed P grade.

[0023] Specifically, such as Figures 2-4 As shown, the boring assembly 15 is slidably mounted on the guide rail 14 via its slide 151 and is driven by a lead screw and nut pair or a linear motor to achieve longitudinal feed. The mounting shaft 152 is fixedly inserted through the slide 151, and its front end is fixedly connected to the tool holder 153. The tool 154 consists of a tool holder 1541, a rotary seat 1542, and a boring bar 1543. The bottom end of the tool holder 1541 is slidably mounted in a guide hole inside the tool holder 153, and a return spring 1544 is wound around its outer surface. The boring bar 1543 is detachably mounted inside the rotary seat 1542 via screws or a pressure block, and the rotary seat 1542 is rotatably mounted on the top end of the tool holder 1541 via a precision bearing to achieve self-rotation, so that the cleaning mechanism 2 can clean the boring bar 1543.

[0024] To achieve online cleaning during the machining process, the cleaning mechanism 2 is installed in the internal cavity of the tool holder 153. For example... Figures 4-7 As shown, specifically, the cleaning mechanism 2 consists of a mounting groove 21, a drive spindle 22, a first cleaning component 23, and a second cleaning component 25; the tool holder 153 has a longitudinally extending mounting groove 21 inside. The drive spindle 22 is slidably disposed in the mounting groove 21, and its power comes from an external hydraulic cylinder or pneumatic cylinder (not shown in the figure). One end of the return spring 1544 abuts against the shoulder of the tool holder 1541, and the other end abuts against the inner wall of the mounting groove 21, which is used to provide a preload force for the retraction of the tool holder 1541. A connecting assembly 24 is provided at the end of the drive spindle 22, which forms a linkage with the tool holder 1541 and the first cleaning component 23 respectively.

[0025] Example 2: This embodiment optimizes the specific structure and linkage method of the cleaning component 23 in Embodiment 1: like Figures 5-7As shown, the cleaning component 23 includes a fixed seat 231 that is slidably installed inside the mounting groove 21. The fixed seat 231 can only slide radially in a direction perpendicular to the axis of the tool 154. An adjusting rod 232 is installed through the fixed seat 231 and its extension length is adjusted by a locking nut. An abutment plate 233 is threaded onto the end of the adjusting rod 232, and the abutment plate 233 has an arc shape. Its arc surface is adapted to the inner wall curved surface of the cylinder hole to be processed to ensure the contact area. It should be noted that since the chips and coolant are all settled at the bottom of the workpiece due to gravity, when the drive spindle 22 pushes it down, the lowest point of the arc plate is exactly aligned with the bottom of the workpiece. This allows the abutment plate 233 to forcibly scrape up and push the thick layer of chips accumulated by gravity out of the hole when the tool is retracted.

[0026] Furthermore, such as Figure 7 and Figure 8 As shown, both the abutment plate 233 and the adjusting rod 232 have interconnected air supply channels 238 inside. Several air nozzles 234, each communicating with the air supply channels 238, are embedded in the side wall of the abutment plate 233. The nozzle 234 has a pressurization zone 239 inside. The pressurization zone 239 consists of an expansion zone and a narrow neck zone in the shape of a trumpet. When the gas flows through this zone, the flow velocity increases sharply, forming a pressurized airflow. When the abutment plate 233 scrapes off the built-up edge and burrs against the hole wall, the scraped metal debris is in a free state. The scraped hard debris is easily trapped between the scraping edge of the abutment plate 233 and the hole wall. As the abutment plate 233 slides, it frantically scratches the newly bored precision hole wall. The high-speed jet generated by the pressurization zone 239 is sprayed outward from the inner root of the abutment plate 233. A positive pressure air curtain is instantly formed at the tiny gap between the abutment plate 233 and the hole wall. The airflow forces the debris that has just detached from the base material to blow outward and backward away from the contact surface, so that the abutment plate 233 always scrapes in a clean environment without debris accumulation. To further explain, during boring, the hole wall will expand at high temperature due to the heat of cutting; scraping friction will also generate a lot of heat. If relying solely on the scraper, the scraped dimensions under thermal expansion will shrink back after cooling, resulting in distortion of the final dimensions. However, when the high-pressure airflow closely adhering to the contact plate 233 passes through the narrow neck area during adiabatic expansion, the temperature drops sharply. The low-temperature, high-speed airflow instantly acts on the exposed metal surface that has just been scraped, causing a transient thermal hardening effect on the surface of the hole wall. This not only quickly stabilizes the thermal expansion and contraction dimensions of the hole diameter, but also causes a sudden change in the thermal expansion coefficient of residues such as oil and chips due to the rapid temperature drop, resulting in a sharp decrease in their bonding force with the substrate, thus making scraping easier and less labor-intensive.

[0027] In addition, such as Figure 5 and Figure 6As shown, the cleaning component 23 also includes a frame 235 fixed to the outer wall of the abutment plate 233. The frame 235 is U-shaped or C-shaped, and rollers 236 are rotatably mounted on its inner side via pins. Roller 236 and abutment plate 233 are set at the same horizontal level, meaning their working surfaces are flush in height to ensure simultaneous contact with the inner wall of the workpiece. It should be noted that roller 236 and abutment plate 233 maintain the same horizontal height and form a staggered fit. During operation, the abutment plate 233, positioned in front, prioritizes contact with the hole wall to complete scraping and cleaning, while roller 236, positioned behind, follows and rolls along the cleaned workpiece hole wall. This not only ensures good rolling transmission for roller 236, but also allows for adaptive detection of hole wall accuracy after boring, relying on the differentiated cooperation between abutment plate 233 and roller 236 to perform defect self-inspection: Firstly, the front-positioned arc-shaped abutment plate 233 has a fixed fit structure that perfectly matches the curvature of a standard cylinder bore. Firstly, if the bore wall has ellipticity deviation, local protrusions, or dimensional deviations after boring, the abutment plate 233 will not fit tightly, will be partially suspended, or will be squeezed and offset, which can intuitively predict abnormalities in the bore wall machining accuracy. Secondly, the rear roller 236 is a rollable and self-adaptive structure that rolls synchronously with the abutment plate 233. When the cleaned bore wall has unevenness, bore diameter deviation, or residual protruding burrs, the roller 236 will experience rolling jamming, radial runout, and offset shaking, directly changing the rotation trajectory and extrusion stroke of the eccentric wheel 237. Furthermore, the movement changes of the eccentric wheel 237 will be synchronously transmitted to the second cleaning part 25, causing the air pressure boosting frequency and jet pressure to fluctuate regularly. By observing the air pressure fluctuations and structural movement, the machining defects of the workpiece bore wall can be quickly identified, achieving simultaneous cleaning and inspection.

[0028] In this embodiment, an eccentric wheel 237 connected to the end of the roller 236 is installed on the outer side of the frame 235. That is, the rotation center of the eccentric wheel 237 coincides with the rotation center of the roller 236, and its outer contour is cam-shaped. The outer side of the eccentric wheel 237 abuts against the cleaning component 25.

[0029] Example 3: This embodiment details the specific structure and transmission function of the connecting component 24 and the second cleaning component 25: like Figures 4-6 As shown, the connecting assembly 24 includes a connecting seat 241 that is detachably mounted to one end of the drive spindle 22 by bolts. A connecting rod 242 is hinged to the outer wall of the connecting seat 241, and the other end of the connecting rod 242 is hinged to the fixed seat 231 to form a crank-slider mechanism. It should be noted that an electric positioning shaft can also be installed inside the mounting groove 21 to be inserted into the tool holder 1541 so as to position the boring tool 1543 after it has been moved upward by the wedge seat 244.

[0030] As a further improvement, such as Figure 5 and Figure 6 As shown, a resiliently configured buffer block 243, preferably a polyurethane rubber block, is fixed to the side of the connecting seat 241 away from the drive spindle 22 to absorb the impact force during tool retraction. A first wedge-shaped seat 244 is mounted on the top outer surface of the connecting seat 241, while a second wedge-shaped seat 244 with an interference fit is fixedly mounted on the bottom end of the tool holder 1541. The angle of the mating slope of the two wedge-shaped seats 244 is 30° to 45°. When the drive spindle 22 extends into the mounting groove 21, the high surface of the first wedge-shaped seat 244a on the drive spindle 22 transitions to the low surface of the second wedge-shaped seat 244b, generating a wedge effect. This overcomes the elastic force of the return spring 1544, achieving a slight downward compression of the tool 154, so that the subsequent boring assembly 15 can safely retract without scratching the machined surface.

[0031] like Figure 6 and Figure 7 As shown, the second cleaning component 25 consists of a first pressurizing chamber 255, a second pressurizing chamber 256, a pressurizing rod 251, a connecting frame 252, and a three-way pipe 254. The first pressurizing chamber 255 is located inside the tool holder 153, and the second pressurizing chamber 256 is located inside the drive spindle 22. The first port of the three-way pipe 254 is connected to the first pressurizing chamber 255, the second port is connected to the second pressurizing chamber 256, and the third port is connected to the air supply channel 238 via a rotary joint. The three-way pipe 254 consists of a rigid pipe and a flexible pipe, and its end is equipped with a valve. The valve connected to the first pressurizing chamber 255 and the side of the tool holder 153 are both equipped with check valves connected to the first pressurizing chamber 255. The check valve on the tool holder 153 can be connected to an air tank via a pipe (not shown in the figure). Specifically, the pressurizing rod 251 is slidably sealed inside the first pressurizing chamber 255, and its end extends to the outside of the tool holder 153 and connects to the connecting frame 252. A return spring 253 is installed on the outer side of the connecting frame 252, which provides elastic force for the pressure rod 251 to extend outward. The inner side of the connecting frame 252 abuts against the eccentric wheel 237. When the roller 236 rotates, it drives the eccentric wheel 237 to rotate, which in turn periodically pushes the connecting frame 252, causing the pressure rod 251 to reciprocate against the return spring 253.

[0032] In addition, an air nozzle 257 and an external connecting pipe 26 extending to the outside of the pressure chamber 256 are fixedly connected to the outside of the tool holder 153. The external connecting pipe 26 can be connected to a fluid delivery pipe. The air outlet of the air nozzle 257 faces the cutting edge of the tool 154. A collection tank 16 is provided inside the machine base 11 for collecting and recycling the mixture of iron filings and coolant that has been cleaned up.

[0033] The working principle of this invention is as follows: Before processing, the workpiece is fixed on the clamping structure 13 of the machine base 12 to complete the workpiece positioning and locking, ensuring the machining reference accuracy of the cylinder bore. The slide 151 is slidably mounted on the guide rail 14, which can drive the overall boring assembly 15 to achieve longitudinal displacement adjustment to adapt to the machining stroke of the cylinder bore of different specifications of diesel engine frames. During boring, the machine base 12 has a built-in special rotary drive device, which can drive the clamping structure 13 and the workpiece to rotate at a uniform speed, forming a workpiece rotation machining mode. At the same time, the drive spindle 22 in the cleaning mechanism 2 is in the retracted state, and the interference fit of the two wedge seats 244 drives the boring tool 1543 to extend outward to perform boring work. After boring, the drive spindle 22 extends forward, and the connecting seat 241 of the connecting assembly 24 moves synchronously with the drive spindle 22. On one hand, it pushes the hinged connecting rod 242, which pushes the fixed seat 231 of the cleaning component 23 downward along the mounting groove 21, so that the arc-shaped abutment plate 233 fits against the inner wall of the cylinder bore workpiece. At the same time, the roller 236 on the inner side of the frame 235 fits against the inner wall of the workpiece, achieving precise positioning of the cleaning structure. On the other hand, the wedge-shaped seat 244 on the connecting seat 241 switches between high and low surfaces with the displacement, cooperating with the tool holder 1. The wedge-shaped seat 244 structure at the bottom of 541 drives the tool 154 to move slightly downward, reserving working space for subsequent tool retraction and cleaning; during the tool retraction process of the boring assembly 15, the abutment plate 233 slides against the hole wall to physically scrape off residual debris and burrs on the hole wall. At the same time, the eccentric wheel 237 on the outside of the abutment plate 233 rotates synchronously with the roller 236, continuously abutting against the connecting frame 252 of the second extrusion cleaning part 25, overcoming the elastic force of the second return spring 253 to drive the pressure rod 251 to reciprocate and seal and slide inside the first pressure chamber 255; The second cleaning component 25 achieves air flow diversion and pressurization through the three-way pipe 254. The pressurizing rod 251 reciprocates to compress the gas inside the first pressurizing chamber 255. The gas is then delivered to two air paths through the three-way pipe 254: the first gas enters the air delivery channel 238 inside the regulating rod 232 and the abutment plate 233, and is finally ejected from the first air nozzle 234. The trumpet-shaped pressurizing zone 239 inside the first air nozzle 234 can pressurize and accelerate the airflow. The high-pressure airflow, together with the physical scraping of the abutment plate 233, thoroughly cleans the fine debris and dust from the hole wall; the second gas enters the second pressurizing chamber 256 inside the drive spindle 22, and is finally ejected from the second air nozzle 257. The high-pressure airflow is directed directly toward the boring tool 1543, removing the metal shavings and oil residue remaining on the cutting edge of the tool 154. At this time, the impurities pushed out by the abutment plate 233 enter the collection tank 16 for centralized processing.

Claims

1. A cylinder bore boring device for a diesel engine frame, comprising a boring machine (1) consisting of a machine base (11), a base (12), a clamping structure (13), a guide rail (14), and a boring assembly (15); characterized in that, The boring assembly (15) consists of a slide (151), a mounting shaft (152), a tool holder (153), and a cutting tool (154), wherein the cutting tool (154) consists of a tool holder (1541), a rotating seat (1542), and a boring tool (1543); It also includes a cleaning mechanism (2) disposed on the tool holder (153). The cleaning mechanism (2) consists of a mounting groove (21), a drive spindle (22), a first cleaning component (23), and a second cleaning component (25). The mounting groove (21) is opened in the tool holder (153). The drive spindle (22) is slidably disposed in the mounting groove (21), and its end is provided with a connecting component (24) that is linked to the tool bar (1541) and the first cleaning component (23) respectively. The first cleaning component (23) and the second cleaning component (25) are both located in the mounting slot (21). The first cleaning component (23) is used for cleaning by driving the main shaft (22). At the same time, the first cleaning component (23) is used in conjunction with the second cleaning component (25) during the cleaning process to further enhance the cleaning effect.

2. The diesel engine frame cylinder bore boring device according to claim 1, characterized in that: The cleaning component (23) includes a fixed seat (231) that is slidably installed inside the mounting groove (21), an adjusting rod (232) that is installed through the fixed seat (231), and an abutment plate (233) that is threaded onto the end of the adjusting rod (232). The abutment plate (233) is arc-shaped and fits the inner side of the workpiece.

3. The diesel engine frame cylinder bore boring device according to claim 2, characterized in that: Both the abutment plate (233) and the adjusting rod (232) have an air supply channel (238) that cooperates with the cleaning component (25). Several air nozzles (234) that communicate with the air supply channel (238) are installed on the side wall of the abutment plate (233). The air nozzles (234) have a pressurization zone (239) inside. The pressurization zone (239) consists of an expansion zone and a narrow neck zone that are shaped like a trumpet.

4. The diesel engine frame cylinder bore boring device according to claim 3, characterized in that: The cleaning component (23) further includes a frame (235) fixed to the outer wall of the abutment plate (233). A roller (236) is rotatably mounted on the inner side of the frame (235), and an eccentric wheel (237) connected to the end of the roller (236) is mounted on the outer side of the frame (235). The outer side of the eccentric wheel (237) abuts against the cleaning component (25); the roller (236) and the abutment plate (233) are set at the same level.

5. The diesel engine frame cylinder bore boring device according to claim 4, characterized in that: The connecting assembly (24) includes a connecting seat (241) detachably mounted on one end of the drive spindle (22). A connecting rod (242) hinged to the fixed seat (231) is mounted on the outer wall of the connecting seat (241). The drive spindle (22) extends into the mounting groove (21), and the connecting seat (241) connected to it moves synchronously and pushes the connecting rod (242). The connecting rod (242) pushes the fixed seat (231) down, so that the abutment plate (233) moves to fit against the inner wall of the workpiece. At the same time, the roller (236) also fits against the inner wall of the workpiece. When the boring assembly (15) retracts, the abutment plate (233) can perform cleaning work.

6. The diesel engine frame cylinder bore boring device according to claim 5, characterized in that: A buffer block (243) is fixed on the side of the connecting seat (241) away from the drive spindle (22). Two interference fit wedge seats (244) are installed on the top outer surface of the connecting seat (241). One of the wedge seats (244) is fixed to the bottom end of the tool holder (1541). When the drive spindle (22) extends into the mounting groove (21), the wedge seat (244) on the drive spindle (22) transitions to the lower surface, realizing the downward movement of the tool (154) so ​​that the subsequent boring assembly (15) can retract.

7. A diesel engine frame cylinder bore boring device according to claim 4, characterized in that: The second cleaning component (25) consists of a first pressure chamber (255), a second pressure chamber (256), a pressure rod (251), a connecting frame (252), and a three-way pipe (254). The first pressure chamber (255) is located inside the tool holder (153), and the second pressure chamber (256) is located inside the drive spindle (22). The three-way pipe (254) is connected to the first pressure chamber (255), the second pressure chamber (256), and the air supply channel (238). The outer side of the second pressure chamber (256) is fixedly connected to a second air nozzle (257) extending to the outside of the tool holder (153) and an outer pipe (26). The air outlet of the second air nozzle (257) faces the tool (154).

8. A diesel engine frame cylinder bore boring device according to claim 7, characterized in that: The booster rod (251) is slidably sealed inside the booster chamber (255). A reset spring (253) is installed on the outside of the connecting frame (252). The end of the booster rod (251) extends to the outside of the tool holder (153) and is connected to the connecting frame (252). The booster rod (251) abuts against the eccentric wheel (237) through the connecting frame (252) to achieve reciprocating motion. During the reciprocating motion of the booster rod (251), gas is delivered to the gas delivery channel (238) and the booster chamber (256) through the three-way pipe (254). It not only works with the abutment plate (233) for cleaning, but also cleans the tool (154).

9. A diesel engine frame cylinder bore boring device according to claim 1, characterized in that: The slide block (151) is slidably mounted on the guide rail (14) and can move the boring assembly (15). The mounting shaft (152) is fixedly inserted inside the slide block (151), and the tool holder (153) is fixed to one end of the mounting shaft (152).

10. A diesel engine frame cylinder bore boring device according to claim 1, characterized in that: The bottom end of the tool bar (1541) is slidably installed inside the tool holder (153), and a return spring (1544) connected to the inner wall of the mounting groove (21) is wound around its bottom outer surface. The boring tool (1543) is detachably installed inside the rotating seat (1542), and the rotating seat (1542) is rotatably installed on the top of the tool bar (1541). A collection groove (16) is provided inside the machine base (11).

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