A tooling for machining the threaded bore system of an engine cylinder block

Abstract

This invention belongs to the field of engine cylinder block machining technology, specifically a tooling for machining the threaded holes of an engine cylinder block. It includes a machine tool with a worktable mounted on it. Several grooves are formed on the top of the worktable, and an engine cylinder block is placed on the worktable. Several positioning fixtures are also provided on the worktable. This invention utilizes a sliding block within the grooves of the worktable. The sliding block moves a pressure plate towards the engine cylinder block, and by tightening bolts on a crossbeam, the bolts move towards the pressure plate, thus pressing the pressure plate and shims together. This securely fixes the engine cylinder block to the worktable for drilling operations. As the sliding block moves, it drives a scraper to remove metal shavings generated during machining from the grooves. A curved connecting plate further prevents the accumulated metal shavings from overflowing the sliding block. The curved connecting plate causes the accumulated metal shavings to continuously tumble forward and be cleared from the grooves.

Description

Technical Field

[0001] This invention belongs to the field of engine cylinder block machining technology, specifically a tooling for machining the threaded holes in an engine cylinder block. Background Technology

[0002] The engine cylinder block is a key component of an internal combustion engine. It forms the engine's main structure, supporting other major components and providing operating space. Cylinder blocks are typically made of aluminum alloy or cast iron, possessing sufficient strength and rigidity to withstand the high pressure and high temperature environment inside the engine. Drilling is required during the machining of the engine cylinder block to facilitate the subsequent installation and use of components such as piston rods. This drilling process mainly involves machining holes for cylinder bores, oil passages, and cooling water passages. Because the cylinder block needs to withstand the high temperature and pressure environment, the dimensions, location, and surface quality of these holes require extremely high precision. Drilling is usually performed using machine tools to ensure the accuracy and quality of the holes, thereby guaranteeing the normal operation and durability of the engine.

[0003] When drilling holes in an engine cylinder block, the engine cylinder block must first be placed on the machine tool's worktable and then positioned using a tooling fixture to ensure that the engine cylinder block does not shift during subsequent processing.

[0004] There are currently two methods for positioning engine cylinder blocks. One method involves using a dedicated positioning mechanism to fix the engine cylinder block. However, the models of engine cylinder blocks processed in factories often change, frequently producing different models and types. This means that the dedicated positioning mechanism cannot quickly match different engine cylinder block models, requiring replacement of the positioning mechanism. The other method involves operators using existing shims and bolts to fix the engine cylinder block to the machine tool's worktable. This method requires operators to constantly adjust the number of shims to fit the engine cylinder block, and also requires relevant experience to securely fix the engine cylinder block, making it inefficient.

[0005] Therefore, the present invention provides a tooling for machining the threaded bore system of an engine cylinder block. Summary of the Invention

[0006] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0007] The technical solution adopted by this invention to solve its technical problem is as follows: A tooling for machining the threaded bore system of an engine cylinder block, comprising a machine tool, a worktable mounted on the machine tool, a plurality of sliding grooves formed on the top of the worktable, and an engine cylinder block placed on the worktable; a plurality of positioning fixtures are provided on the worktable, each positioning fixture including a slider that slides within a sliding groove, a pressure plate slidably connected to the slider, a washer fixedly installed at the bottom of the pressure plate, a crossbeam attached to one side of the slider by screws, a bolt threadedly connected to the top of the crossbeam, ball bearings wedged on both sides of the slider, and scrapers fixedly installed on both sides of the slider; an anti-slip mechanism is provided on one side of the pressure plate, and a connecting mechanism is provided on one side of the slider.

[0008] Furthermore, a connecting plate is fixedly installed on the top of the scraper. Both the scraper and the connecting plate are arc-shaped, and the scraper and the connecting plate cooperate to form a semi-circle.

[0009] Furthermore, the anti-slip mechanism includes a hollow elastic block fixedly installed on one side of the pressure plate. An air outlet pipe with a one-way valve is fixedly installed at the bottom of the elastic block and communicates with the interior. An air inlet pipe with a one-way valve is fixedly installed at the top of the elastic block and communicates with the interior.

[0010] Furthermore, the pressure plate has a connecting groove that communicates with the interior of the elastic block. A sealing plate is slidably connected to the connecting groove by a spring. A magnetic sheet is fixedly installed on the side of the sealing plate away from the spring. Protective powder is pre-stored in the connecting groove. A feed pipe with a one-way valve and communicating with the interior of the connecting groove is fixedly installed on the top of the pressure plate. A connecting pipe with a one-way valve and communicating with the interior of the connecting groove is fixedly installed on the bottom of the pressure plate. The end of the connecting pipe away from the connecting groove is connected to the interior of the air outlet pipe. A delay component is provided at the end of the air outlet pipe away from the elastic block.

[0011] Furthermore, the delay assembly includes an end cap rotatably connected to the air outlet pipe via a torsion spring. An arc-shaped fixing rod made of rubber is fixedly installed at the end of the end cap away from the air outlet pipe, and a fixing groove is formed on the surface of the air outlet pipe.

[0012] Furthermore, the connecting mechanism includes a rectangular frame fixedly installed on one side of the slider, a rectangular plate slidably connected inside the rectangular frame via an elastic element, a brush fixedly installed on the bottom of the rectangular plate, a connecting post fixedly installed on the end of the rectangular plate away from the elastic element, a rubber collar fixedly fitted on the surface of the connecting post, and a groove provided on the side of the slider away from the rectangular frame.

[0013] Furthermore, the elastic element is a hollow elastic ring, a fixed frame is fixedly installed inside the rectangular frame, and the fixed frame has several holes on the side near the rectangular plate. The elastic element and the fixed frame are connected by an air pipe.

[0014] Furthermore, a vibration assembly is provided in the groove of the slider. The vibration assembly includes a hollow ring fixedly installed in the groove. An arc-shaped rotating plate is rotatably connected to the scraper through a torsion spring. A hollow elastic ball is fixedly installed in the scraper. The elastic ball is fixedly connected to the rotating plate. The hollow ring and the elastic ball are connected by a flexible tube.

[0015] Furthermore, a spraying assembly is provided inside the slider. The spraying assembly includes a loading box installed inside the slider, and a rubber storage box is fixedly installed inside the rectangular frame. The loading box and the storage box are connected by a liquid guide pipe with a one-way valve. A spray pipe with a one-way valve and connected to the inside is fixedly installed on one side of the storage box. The end of the spray pipe away from the storage box is close to a bolt. An arc-shaped top plate is fixedly installed on one side of the rectangular plate.

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

[0017] 1. The present invention discloses a tooling for machining the threaded holes in an engine cylinder block. A slider within a sliding worktable groove moves a pressure plate towards the engine cylinder block. Tightening the bolts on the crossbeam moves the bolts towards the pressure plate, tightening the pressure plate and shims. This securely fixes the engine cylinder block to the worktable for drilling operations. As the slider slides, a scraper removes metal shavings generated during machining from the groove. An arc-shaped connecting plate prevents accumulated metal shavings from overflowing the slider. The arc-shaped connecting plate causes the accumulated metal shavings to continuously roll forward and be cleared from the groove. This designed positioning tooling achieves rapid fixing of the engine cylinder block without requiring a matching positioning tool. Utilizing the irregular shape and surface indentations of the engine cylinder block, the pressure plate can contact the cylinder block, enabling rapid clamping and significantly improving the efficiency of engine cylinder block installation.

[0018] 2. The tooling for machining the threaded bore system of an engine cylinder block according to the present invention uses an elastic block to buffer the pressure plate when it contacts the engine cylinder block, effectively preventing damage to the hard material pressure plate from impact. Simultaneously, the gas inside the elastic block, after being compressed, is sprayed through an inclined exhaust pipe onto the area of ​​the engine cylinder block to be pressed, thereby reducing impurities and cutting fluid residue in the pressed area and aiding in the subsequent pressing of the gasket onto the engine cylinder block. As the pressure plate continues to move, the sealing plate compresses the protective powder in the connecting groove, allowing the protective powder to enter the exhaust pipe through the connecting pipe and be sprayed onto the area of ​​the engine cylinder block to be pressed. Spraying the protective powder effectively increases the friction of the pressed area, facilitating better pressing and fixing of the engine cylinder block by the pressure plate and gasket. At the same time, the protective powder forms a protective layer on the surface of the engine cylinder block, reducing the oxidation caused by oxygen and moisture on the iron surface.

[0019] 3. The tooling for machining the threaded bore system of an engine cylinder block as described in this invention involves pulling a connecting column, causing the connecting column, carrying a rubber collar, to enter and lock into the groove of another slider. When the collar enters the groove, it compresses the hollow ring inside. The gas inside the hollow ring flows through a hose into an elastic ball and expands, thereby driving a rotating plate to rotate towards the connecting plate and impact it, thus removing residual impurities from the surface of the connecting plate and scraper. This facilitates efficient cleaning of iron filings in the groove by the connecting plate and scraper. When several sliders are connected together, sliding one slider moves several sliders together, eliminating the need to slide each slider individually, simplifying operation and improving work efficiency. Furthermore, as the sliders move, the brush at the bottom of the rectangular plate pushes iron filings from the worktable surface into the groove, where they are removed by the scraper and connecting plate.

[0020] 4. The tooling for machining the threaded bore system of an engine cylinder block as described in this invention involves a rectangular plate resetting under the action of an elastic element. Gas from the elastic element enters the hole of the fixed frame through an air pipe and is blown out, thereby cleaning the brush at the bottom of the rectangular plate and reducing the amount of impurities carried by the brush into the rectangular frame. The resetting of the rectangular plate and brush also shields the port of the rectangular frame, further reducing the entry of impurities. The top plate on one side of the rectangular plate presses against a rubber storage box, causing the maintenance fluid inside the box to be sprayed onto the bolts through a spray pipe, thus performing maintenance on the bolts. The applied maintenance fluid forms a lubricating film on the threaded surface of the bolts, helping to prevent wear and extending the bolt's service life. Simultaneously, the maintenance fluid has moisture-proof and anti-oxidation properties, effectively preventing rust and corrosion on the bolt surface. When the rubber storage box is no longer pressed and resets, the maintenance fluid in the loading box is drawn into the storage box through a liquid guide pipe with a one-way valve, ensuring that the storage box is always full of maintenance fluid, and the amount of maintenance fluid sprayed each time is controllable, reducing waste. Attached Figure Description

[0021] The invention will now be further described with reference to the accompanying drawings.

[0022] Figure 1 This is a three-dimensional structural diagram of the workbench in this invention;

[0023] Figure 2 This is a schematic diagram of the slider in this invention;

[0024] Figure 3 This is a bottom view of the pressure plate structure in this invention;

[0025] Figure 4 This is a schematic diagram of the structure of the rolling ball in this invention;

[0026] Figure 5 This is a partial cross-sectional view of the slider in this invention;

[0027] Figure 6 This is a cross-sectional view of the scraper in this invention;

[0028] Figure 7 This is a partial cross-sectional view of the pressure plate in this invention;

[0029] Figure 8 This is a partial cross-sectional view of the air outlet pipe in this invention;

[0030] Figure 9 In this invention Figure 5 A schematic diagram of the structure at point A.

[0031] In the diagram: 1. Machine tool; 2. Worktable; 3. Slide; 4. Engine block;

[0032] 10. Positioning fixture; 11. Slider; 12. Pressure plate; 13. Shim; 14. Crossbeam; 15. Bolt; 16. Ball bearing; 17. Scraper; 18. Connecting plate;

[0033] 20. Anti-slip mechanism; 21. Elastic block; 22. Air inlet pipe; 23. Air outlet pipe; 24. Connecting groove; 25. Spring; 26. Sealing plate; 27. Magnetic sheet; 28. Connecting pipe;

[0034] 29. Delay assembly; 291. End cap; 292. Fixing rod; 293. Fixing groove;

[0035] 30. Connecting mechanism; 31. Rectangular frame; 32. Rectangular plate; 33. Connecting column; 34. Collar; 35. Groove; 36. Elastic element; 37. Fixing frame;

[0036] 38. Vibration assembly; 381. Hollow ring; 382. Rotating plate; 383. Elastic ball;

[0037] 39. Spraying assembly; 391. Top plate; 392. Loading box; 393. Storage box; 394. Spraying pipe. Detailed Implementation

[0038] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0039] like Figures 1 to 9 As shown in the embodiment of the present invention, a tooling for machining the threaded bore system of an engine cylinder block includes a machine tool 1, a worktable 2 mounted on the machine tool 1, a plurality of sliding grooves 3 formed on the top of the worktable 2, and an engine cylinder block 4 placed on the worktable 2; a plurality of positioning fixtures 10 are provided on the worktable 2, each positioning fixture 10 including a slider 11 that slides within the sliding grooves 3, a pressure plate 12 slidably connected to the slider 11, a washer 13 fixedly mounted on the bottom of the pressure plate 12, a crossbeam 14 attached to one side of the slider 11 by screws, a bolt 15 threadedly connected to the top of the crossbeam 14, ball bearings 16 wedged on both sides of the slider 11, and scrapers 17 fixedly mounted on both sides of the slider 11. A connecting plate 18 is fixedly mounted on the top of the scraper 17, and both the scraper 17 and the connecting plate 18 are arc-shaped, forming a semi-circle when they cooperate.

[0040] During operation, when the engine block 4 is placed on the worktable 2, the slider 11 within the sliding groove 3 of the worktable 2 moves the pressure plate 12 towards the engine block 4. Since the engine block 4 is not a regular rectangle, its surface has many recesses and protrusions, providing space for the pressure plate 12 to contact the engine block 4. The pressure plate 12 and the gasket 13 work together to hold the engine block 4 in place. Then, the bolt 15 on the crossbeam 14 is tightened, causing the bolt 15 to move towards the pressure plate 12, thus pressing the pressure plate 12 and the gasket 13 together. This securely fixes the engine block 4 to the worktable 2 for drilling operations. After the engine block 4 has finished machining, the bolt 15 is loosened, and the slider 11 is slid again, releasing the pressure plate 11 from its original position.

[0041] Since both sides of the slider 11 are equipped with arc-shaped scrapers 17 and connecting plates 18, when the slider 11 slides, it will drive the scrapers 17 to scrape the iron filings generated during the processing in the groove 3 out of the groove 3. In addition, the arc-shaped connecting plates 18 prevent the iron filings from accumulating and passing over the slider 11. The arc-shaped connecting plates 18 will cause the accumulated iron filings to roll forward continuously and be cleaned out of the groove 3.

[0042] The positioning fixture 10 designed above achieves the function of quickly fixing the engine block 4 without the need for a positioning tool that matches the engine block 4. Utilizing the irregular shape of the engine block 4 and the fact that its surface will inevitably have depressions, the pressure plate 12 can come into contact with the engine block 4, thereby achieving a rapid pressing effect on the engine block 4 and greatly improving the work efficiency of installing the engine block 4.

[0043] The anti-slip mechanism 20 includes a hollow elastic block 21 fixedly installed on one side of the pressure plate 12. An air outlet pipe 23 with a one-way valve is fixedly installed at the bottom of the elastic block 21 and communicates with its interior. An air inlet pipe 22 with a one-way valve is fixedly installed at the top of the elastic block 21 and communicates with its interior. A connecting groove 24 communicating with the interior of the elastic block 21 is provided inside the pressure plate 12. A sealing plate 26 is slidably connected to the connecting groove 24 via a spring 25. A magnetic sheet 27 is fixedly installed on the side of the sealing plate 26 away from the spring 25. Protective powder is pre-stored in the connecting groove 24. A feed pipe with a one-way valve communicating with the interior of the connecting groove 24 is fixedly installed at the top of the pressure plate 12. A connecting pipe 28 with a one-way valve communicating with the interior of the connecting groove 24 is fixedly installed at the bottom of the pressure plate 12. The end of the connecting pipe 28 away from the connecting groove 24 is connected to the interior of the air outlet pipe 23.

[0044] Specifically, the delay component 29 includes an end cap 291 rotatably connected to the air outlet pipe 23 via a torsion spring. An arc-shaped fixing rod 292 made of rubber is fixedly installed at the end of the end cap 291 away from the air outlet pipe 23. A fixing groove 293 is formed on the surface of the air outlet pipe 23.

[0045] During operation, when the slider 11 moves the pressure plate 12 towards the engine block 4, the installation of the elastic block 21 provides cushioning when the pressure plate 12 contacts the engine block 4, effectively preventing damage to the hard material pressure plate 12 upon impact. Simultaneously, after being compressed, the gas inside the elastic block 21 is sprayed through the inclined exhaust pipe 23 towards the area of ​​the engine block 4 to be pressed, reducing impurities and cutting fluid residue in the pressed area and aiding in the subsequent pressing of the gasket 13 against the engine block 4. As the gas is ejected through the exhaust pipe 23, it first pushes open the end cap 291, allowing the end cap 291, along with the rubber fixing rod 292, to be temporarily fixed into the fixing groove 293, facilitating gas ejection.

[0046] As the pressure plate 12 continues to move, the elastic block 21 is fully compressed. The magnetic sheet 27 of the sealing plate 26 then approaches the engine cylinder 4 (which is made of metal). The magnetic sheet 27 is repelled by the like poles of the engine cylinder 4, causing it to slide and extend into the connecting groove 24. The sealing plate 26 compresses the protective powder within the connecting groove 24, causing the protective powder (which can be graphite powder or alloy powder, depending on the specific situation) to enter the exhaust pipe 23 through the connecting pipe 28 and be sprayed onto the area of ​​the engine cylinder 4 to be pressed. (The connecting pipe 28 is closer to the end cap 291 than the one-way valve of the exhaust pipe 23, so the protective powder will be sprayed out after entering the exhaust pipe 23 and will not enter the elastic block 21 through the exhaust pipe 23). Spraying the protective powder effectively increases the friction of the area to be pressed, facilitating better pressing and fixing of the engine cylinder 4 by the pressure plate 12 and the gasket 13. Simultaneously, the protective powder forms a protective layer on the surface of the engine cylinder 4, reducing the oxidation caused by oxygen and moisture on the iron surface.

[0047] The connecting mechanism 30 includes a rectangular frame 31 fixedly installed on one side of the slider 11. A rectangular plate 32 is slidably connected inside the rectangular frame 31 via an elastic element 36. A brush is fixedly installed at the bottom of the rectangular plate 32. A connecting post 33 is fixedly installed at the end of the rectangular plate 32 away from the elastic element 36. A rubber collar 34 is fixedly fitted onto the surface of the connecting post 33. A groove 35 is formed on the side of the slider 11 away from the rectangular frame 31. The elastic element 36 is a hollow elastic ring. A fixing frame 37 is fixedly installed inside the rectangular frame 31. Several holes are formed on the side of the fixing frame 37 near the rectangular plate 32. The elastic element 36 and the fixing frame 37 are connected by an air pipe.

[0048] Specifically, a vibration assembly 38 is provided in the groove 35 of the slider 11. The vibration assembly 38 includes a hollow ring 381 fixedly installed in the groove 35. An arc-shaped rotating plate 382 is rotatably connected to the scraper 17 via a torsion spring. A hollow elastic ball 383 is fixedly installed in the scraper 17. The elastic ball 383 and the rotating plate 382 are fixedly connected. The hollow ring 381 and the elastic ball 383 are connected by a hose. A spraying assembly 39 is provided in the slider 11. The spraying assembly 39 includes a loading box 392 installed in the slider 11. A rubber storage box 393 is fixedly installed in the rectangular frame 31. The loading box 392 and the storage box 393 are connected by a liquid guide tube with a one-way valve. A spray pipe 394 with a one-way valve and connected to the interior is fixedly installed on one side of the storage box 393. The end of the spray pipe 394 away from the storage box 393 is close to the bolt 15. An arc-shaped top plate 391 is fixedly installed on one side of the rectangular plate 32.

[0049] During operation, if several sliders 11 need to be slid before sliding slider 11, the connecting post 33 is pulled, causing the connecting post 33 to slide the rectangular plate 32 away from the rectangular frame 31. This allows the connecting post 33, along with the rubber collar 34, to enter the groove 35 of another slider 11 and engage. When the collar 34 enters the groove 35, it compresses the hollow ring 381 inside, allowing the gas inside the hollow ring 381 to flow through the hose into the elastic ball 383. This causes the elastic ball 383 to fill with gas and expand, thereby driving the rotating plate 382 to rotate and impact towards the connecting plate 18. This removes residual impurities from the surfaces of the connecting plate 18 and the scraper 17, facilitating efficient cleaning of iron filings from the groove 3 by the connecting plate 18 and the scraper 17. When the collar 34 of the connecting column 33 is fully engaged in the groove 35, the hollow ring 381 is no longer compressed, so the gas in the elastic ball 383 flows back into the hollow ring 381 through the hose, and the rotating plate 382 also resets, which facilitates subsequent work.

[0050] When several sliders 11 are connected together, sliding one slider 11 will move several sliders 11 together, eliminating the need for individual sliders 11 and multiple sliders 11, which facilitates operation and improves work efficiency. Furthermore, as the sliders 11 move, the brush at the bottom of the rectangular plate 32 pushes iron filings from the surface of the workbench 2 into the groove 3, where they are removed by the scraper 17 and connecting plate 18.

[0051] After the slider 11 is used, the connecting post 33 needs to be removed from the groove 35 so that the sliders 11 are no longer connected to each other. The connecting post 33 is removed from the groove 35, and the rectangular plate 32 is reset under the action of the elastic member 36. The gas in the elastic member 36 enters the hole of the fixed frame 37 through the air pipe and is blown out (because the elastic member 36 is stretched and sucks in gas when the rectangular plate 32 slides away from the rectangular frame 31, so gas will be blown out from the elastic member 36 when the rectangular plate 32 is reset). This blows air to clean the brush at the bottom of the rectangular plate 32, reducing the amount of impurities carried by the brush into the rectangular frame 31. The reset of the rectangular plate 32 and the brush also covers the port of the rectangular frame 31, which can also reduce the entry of impurities.

[0052] The prolonged processing of different engine cylinder blocks 4 necessitates frequent tightening of bolts 15. After the rectangular plate 32 is reset, it is pushed back into the rectangular frame 31. The top plate 391 on one side of the rectangular plate 32 presses against the rubber storage box 393, causing the maintenance fluid (which can be lubricating oil) inside the storage box 393 to be sprayed onto the bolts 15 through the spray pipe 394, thus performing maintenance on the bolts 15. The applied maintenance fluid forms a lubricating film on the threaded surface of the bolts 15, helping to prevent wear and extend the service life of the bolts 15. Simultaneously, the maintenance fluid has moisture-proof and anti-oxidation properties, effectively preventing rust and corrosion on the surface of the bolts 15. When the rubber storage box 393 is no longer pressed and resets, the maintenance fluid in the loading box 392 is drawn into the storage box 393 through a liquid guide pipe equipped with a one-way valve, ensuring that the storage box 393 is always full of maintenance fluid, and that the amount of maintenance fluid sprayed each time is controllable, reducing waste.

[0053] Working principle: When the engine block 4 is placed on the worktable 2, the slider 11 in the sliding groove 3 of the worktable 2 moves the pressure plate 12 towards the engine block 4. Since the engine block 4 is not a regular rectangle, its surface has many recesses and protrusions, providing space for the pressure plate 12 to contact the engine block 4. The pressure plate 12 and the gasket 13 work together to press the engine block 4. Then, the bolt 15 on the crossbeam 14 is tightened, causing the bolt 15 to move towards the pressure plate 12 and press the pressure plate 12 and the gasket 13 together, thus firmly fixing the engine block 4 on the worktable 2 for drilling operations. Since both sides of the slider 11 are equipped with arc-shaped scrapers 17 and connecting plates 18, when the slider 11 slides, it will drive the scrapers 17 to scrape the iron filings generated during the processing in the groove 3 out of the groove 3. In addition, the arc-shaped connecting plates 18 prevent the iron filings from accumulating and passing over the slider 11. The arc-shaped connecting plates 18 will cause the accumulated iron filings to roll forward continuously and be cleaned out of the groove 3.

[0054] When the slider 11 moves towards the engine block 4 with the pressure plate 12, the installation of the elastic block 21 provides cushioning when the pressure plate 12 contacts the engine block 4, effectively preventing damage to the hard material pressure plate 12 from impact. Simultaneously, after being compressed, the gas inside the elastic block 21 is sprayed through the inclined exhaust pipe 23 towards the area of ​​the engine block 4 to be pressed, reducing impurities and cutting fluid residue in the pressed area and aiding in the subsequent pressing of the gasket 13 against the engine block 4. As the gas is ejected through the exhaust pipe 23, it first pushes open the end cap 291, allowing the end cap 291, along with the rubber fixing rod 292, to be temporarily fixed into the fixing groove 293, thus facilitating gas ejection. As the pressure plate 12 continues to move, the elastic block 21 is fully compressed, and the magnetic sheet 27 of the sealing plate 26 approaches the engine cylinder 4. The magnetic sheet 27 is repelled by the like pole of the engine cylinder 4, and then slides and extends into the connecting groove 24. The sealing plate 26 compresses the protective powder in the connecting groove 24, so that the protective powder enters the exhaust pipe 23 through the connecting pipe 28 and is sprayed onto the area of ​​the engine cylinder 4 to be pressed.

[0055] Before sliding slider 11, if several sliders 11 need to be slid, pull the connecting post 33. This causes the connecting post 33 to slide the rectangular plate 32 away from the rectangular frame 31, allowing the connecting post 33, with its rubber collar 34, to enter and lock into the groove 35 of another slider 11. When the collar 34 enters the groove 35, it compresses the hollow ring 381 inside, causing the gas inside the hollow ring 381 to flow into the elastic ball 383 through a hose. This causes the elastic ball 383 to fill with gas and expand, thereby driving the rotating plate 382 to rotate and impact towards the connecting plate 18, thus removing residual impurities from the surfaces of the connecting plate 18 and the scraper 17, facilitating efficient cleaning of iron filings in the groove 3 by the connecting plate 18 and the scraper 17. When the collar 34 of the connecting post 33 is fully engaged in the groove 35, the hollow ring 381 is no longer compressed, so the gas inside the elastic ball 383 flows back into the hollow ring 381 through the hose, and the rotating plate 382 also resets, facilitating subsequent work. After the slider 11 is used up, the connecting post 33 needs to be removed from the groove 35 so that the sliders 11 are no longer connected to each other. The connecting post 33 is removed from the groove 35, and the rectangular plate 32 is reset under the action of the elastic member 36, allowing the gas in the elastic member 36 to enter the hole of the fixed frame 37 through the air pipe and be blown out.

[0056] The prolonged processing of different engine cylinder blocks 4 necessitates frequent tightening of bolts 15. After the rectangular plate 32 is reset, it is pushed again to slide into the rectangular frame 31. The top plate 391 on one side of the rectangular plate 32 presses against the rubber storage box 393, causing the maintenance fluid inside the storage box 393 to be sprayed onto the bolts 15 through the spray pipe 394, thereby performing maintenance on the bolts 15.

[0057] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A tooling for machining the threaded holes of an engine cylinder block, comprising a machine tool (1), a worktable (2) mounted on the machine tool (1), a plurality of sliding grooves (3) being provided on the top of the worktable (2), and an engine cylinder block (4) being placed on the worktable (2). Its features are: The workbench (2) is provided with several positioning fixtures (10). The positioning fixtures (10) include a slider (11) that slides in a slide groove (3). A pressure plate (12) is slidably connected to the slider (11). A gasket (13) is fixedly installed at the bottom of the pressure plate (12). A crossbeam (14) is attached to one side of the slider (11) by screws. A bolt (15) is threaded to the top of the crossbeam (14). Roller balls (16) are wedged on both sides of the slider (11). Scrapers (17) are fixedly installed on both sides of the slider (11). One side of the pressure plate (12) is provided with an anti-slip mechanism (20), and one side of the slider (11) is provided with a connecting mechanism (30). The anti-slip mechanism (20) includes a hollow elastic block (21) fixedly installed on one side of the pressure plate (12). The bottom of the elastic block (21) is fixedly installed with an air outlet pipe (23) that is connected to the interior and has a one-way valve. The top of the elastic block (21) is fixedly installed with an air inlet pipe (22) that is connected to the interior and has a one-way valve. The connecting mechanism (30) includes a rectangular frame (31) fixedly installed on one side of the slider (11). A rectangular plate (32) is slidably connected inside the rectangular frame (31) via an elastic element (36). A brush is fixedly installed at the bottom of the rectangular plate (32). A connecting post (33) is fixedly installed at the end of the rectangular plate (32) away from the elastic element (36). A rubber collar (34) is fixedly fitted on the surface of the connecting post (33). A groove (35) is provided on the side of the slider (11) away from the rectangular frame (31).

2. The tooling for machining the threaded bore system of an engine cylinder block according to claim 1, characterized in that: A connecting plate (18) is fixedly installed on the top of the scraper (17). Both the scraper (17) and the connecting plate (18) are arc-shaped, and the scraper (17) and the connecting plate (18) cooperate to form a semi-circle.

3. The tooling for machining the threaded bore system of an engine cylinder block according to claim 2, characterized in that: The pressure plate (12) has a connecting groove (24) that communicates with the interior of the elastic block (21). A sealing plate (26) is slidably connected to the connecting groove (24) by a spring (25). A magnetic sheet (27) is fixedly installed on the side of the sealing plate (26) away from the spring (25). Protective powder is pre-stored in the connecting groove (24). A feed pipe with a one-way valve and communicating with the interior of the connecting groove (24) is fixedly installed on the top of the pressure plate (12). A connecting pipe (28) with a one-way valve and communicating with the interior of the connecting groove (24) is fixedly installed on the bottom of the pressure plate (12). The end of the connecting pipe (28) away from the connecting groove (24) is connected to the interior of the air outlet pipe (23). A delay component (29) is provided at the end of the vent pipe (23) away from the elastic block (21).

4. The tooling for machining the threaded bore system of an engine cylinder block according to claim 3, characterized in that: The delay component (29) includes an end cap (291) rotatably connected to the air outlet pipe (23) via a torsion spring. An arc-shaped fixing rod (292) made of rubber is fixedly installed at the end of the end cap (291) away from the air outlet pipe (23). A fixing groove (293) is provided on the surface of the air outlet pipe (23).

5. The tooling for machining the threaded bore system of an engine cylinder block according to claim 1, characterized in that: The elastic element (36) is a hollow elastic ring. A fixed frame (37) is fixedly installed inside the rectangular frame (31). The fixed frame (37) has several holes on the side near the rectangular plate (32). The elastic element (36) and the fixed frame (37) are connected by an air pipe.

6. The tooling for machining the threaded bore system of an engine cylinder block according to claim 1, characterized in that: A vibration assembly (38) is provided in the groove (35) of the slider (11). The vibration assembly (38) includes a hollow ring (381) fixedly installed in the groove (35). An arc-shaped rotating plate (382) is rotatably connected in the scraper (17) by a torsion spring. A hollow elastic ball (383) is fixedly installed in the scraper (17). The elastic ball (383) and the rotating plate (382) are fixedly connected. The hollow ring (381) and the elastic ball (383) are connected by a flexible tube.

7. The tooling for machining the threaded bore system of an engine cylinder block according to claim 6, characterized in that: The slider (11) is provided with a spraying assembly (39), which includes a loading box (392) installed in the slider (11). A rubber storage box (393) is fixedly installed in the rectangular frame (31). The loading box (392) and the storage box (393) are connected by a liquid guide pipe with a one-way valve. A spraying pipe (394) with a one-way valve is fixedly installed on one side of the storage box (393). The end of the spraying pipe (394) away from the storage box (393) is close to the bolt (15). An arc-shaped top plate (391) is fixedly installed on one side of the rectangular plate (32).

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