A multi-specification engine cylinder body milling device with rapid positioning

Abstract

The application relates to the technical field of milling equipment, in particular to a multi-specification engine cylinder body milling equipment with rapid positioning, which comprises a clamp assembly for clamping a workpiece, a tool shank arranged at the top of a tool head and a tool head arranged at the bottom end of the tool shank, the top end of the tool shank is rotationally provided with a liquid delivery pipe, an axial flow channel in communication with the inside of the liquid delivery pipe is arranged in the inside of the tool shank, a radial liquid outlet channel in communication with the axial flow channel is arranged on the outer wall of the tool shank, an adapter pipe in communication with the inside of the liquid delivery pipe is fixedly installed on the outer wall of the liquid delivery pipe, a top liquid outlet nozzle is fixedly installed on the liquid outlet end of the adapter pipe, and a trigger component is arranged on the outer wall of the tool shank. The equipment achieves the effects of pure mechanical self-adaptive switching of the cooling liquid spraying mode according to the state of chip removal and automatic avoidance of the chip removal channel.

Description

Technical Field

[0001] This invention relates to the field of milling equipment technology, and more specifically, to a multi-specification engine cylinder block milling equipment with rapid positioning. Background Technology

[0002] The engine block is a core component of the engine. During long-term engine service, the piston reciprocates at high speed within the cylinder, and the crankshaft and connecting rod mechanism exerts lateral thrust on the cylinder wall, causing uneven wear. This causes the cylinder wall's cross-section to gradually change from a standard circle to an ellipse. This out-of-roundness deformation can lead to serious problems such as blow-by, decreased compression ratio, excessive oil consumption, and power reduction. Therefore, during engine overhaul or remanufacturing, specialized milling equipment must be used to re-machine the out-of-round cylinder wall, removing the deformed layer and restoring it to a standard circle while meeting the required cylindricity.

[0003] During the recovery milling of the cylinder inner wall, due to the deep hole structure of the cylinder, the milling tool generates a large amount of cutting heat when rotating at high speed inside the cylinder. For example, Chinese patent CN120920790A discloses a milling cooling system based on multiple nozzles and supercritical carbon dioxide jets, which includes: a jet execution component, a pressure stabilizing flow component, a data acquisition component, and a system controller. By arranging N movable cooling nozzles around the workpiece to be milled, a more comprehensive cooling effect is achieved.

[0004] The aforementioned milling equipment uses a method of spraying coolant downwards from the top of the workpiece. While this method can meet the cooling needs of general flat or shallow cavity workpieces, it is difficult to adapt to the milling conditions of deep hole structures such as cylinder inner walls. When milling deep hole inner walls, the coolant sprayed from the top can only flow slowly along the cylinder wall to form a liquid film due to gravity, which is insufficient to overcome the strong centrifugal force generated by the high-speed rotating tool. This results in the coolant not being able to effectively penetrate into the contact interface between the tool and the chips, leading to low heat dissipation efficiency and easily causing accelerated tool thermal wear and cylinder wall thermal deformation. Summary of the Invention

[0005] This invention provides a multi-specification engine cylinder block milling device with rapid positioning. By setting an adaptive switching structure triggered by the thrust accumulated in the deep hole chips, it achieves dynamic switching between radial precision spraying and top high-flow spraying, thereby solving the problems mentioned in the background art, namely: when milling the inner wall of a deep hole, the top sprayed coolant is unable to overcome the centrifugal force of the high-speed rotating tool, resulting in the coolant not being able to effectively penetrate into the interface between the tool and the chips, thus causing low heat dissipation efficiency, increased tool thermal wear, and cylinder wall thermal deformation.

[0006] To achieve the above objectives, the present invention provides a multi-specification engine cylinder block milling device with rapid positioning, comprising a clamping assembly for clamping the workpiece, a tool holder disposed at the top of the tool head, and a tool head disposed at the bottom of the tool holder. A fluid inlet tube is rotatably disposed at the top of the tool holder. An axial flow channel communicating with the interior of the fluid inlet tube is formed inside the tool holder. A radial liquid outlet channel communicating with the axial flow channel is formed on the outer wall of the tool holder. A transfer pipe communicating with the interior of the fluid inlet tube is fixedly installed on the outer wall of the fluid inlet tube. A top liquid outlet nozzle is fixedly installed at the liquid outlet end of the transfer pipe. A triggering component is provided on the outer wall of the tool holder. The triggering component includes a lifting ring slidably mounted on the outer wall of the tool holder and a plurality of arc-shaped elastic plates arranged circumferentially along the lifting ring. The top ends of the arc-shaped elastic plates are fixedly connected to the outer wall of the lifting ring.

[0007] In the above technical solution, when milling a deep hole, coolant is initially sprayed out from the radial outlet channel. When the arc-shaped elastic plate is pushed upward by the chips accumulated in the deep hole and moves upward to the preset position, the coolant spray channel is switched from the radial outlet channel to the top outlet nozzle so that the chips can be washed away by the coolant sprayed from the top outlet nozzle.

[0008] Based on the above, the triggering component further includes a connecting rod fixedly installed on the bottom surface of the lifting ring, a baffle fixedly installed on the bottom end of the connecting rod for blocking the radial liquid outlet channel, a V-shaped elastic plate connected between the arc-shaped elastic plate and the connecting rod, a fixing cover fixedly installed on the outer wall of the knife handle, and a fixing ring fixedly installed on the outer wall of the knife handle. The fixing cover is located at the top of the lifting ring, the fixing ring is located at the bottom of the lifting ring, one end of the V-shaped elastic plate is fixedly connected to the inner wall of the arc-shaped elastic plate, and the other end is fixedly connected to the outer wall of the connecting rod.

[0009] The fixing cover is cone-shaped.

[0010] A limiting rod is fixedly installed on the top surface of the fixed ring, and a limiting groove is provided on the bottom surface of the lifting ring for the limiting rod to pass through.

[0011] The triggering component also includes a connecting groove opened inside the adapter and communicating with the inside of the infusion tube, an installation groove opened inside the adapter and communicating with the inside of the connecting groove, a piston slidably installed inside the installation groove for sealing the connecting groove, and a guide cage fixedly installed inside the installation groove for limiting the sliding direction of the piston.

[0012] The triggering component further includes a first annular groove inside the handle, a second annular groove at the bottom of the infusion tube, a second annular block slidably mounted inside the second annular groove via a second telescopic rod, a first annular block slidably mounted inside the first annular groove via a first telescopic rod, a first connecting rope connecting the first annular block and the lifting ring, a first through hole inside the handle for the first connecting rope to slide through, a second connecting rope connecting the second annular block and the piston, and a second through hole inside the infusion tube for the second connecting rope to slide through, wherein the bottom surface of the second annular block is rotatably connected to the top surface of the first annular block.

[0013] The multi-specification engine block milling equipment also includes a base set on one side of the cutter head, a lifting seat slidably mounted on the outer wall of the base, a mounting frame fixedly mounted on the outer wall of the lifting seat, and a support plate slidably mounted on the outer wall of the mounting frame. The top of the cutter handle is rotatably connected to the bottom surface of the support plate, the outer wall of the infusion tube is fixedly connected to the outer wall of the support plate, and the inner wall of the cutter handle is rotatably fitted with the outer wall of the infusion tube.

[0014] The top end of the infusion tube is connected to an external infusion supply system.

[0015] The clamp assembly includes an operating table located at the bottom of the tool holder, a fixed seat fixedly installed on the top surface of the operating table, a rotating seat rotatably installed on the outer wall of the fixed seat, a support plate fixedly installed on the outer wall of the rotating seat, an arc-shaped seat fixedly installed on the outer wall of the support plate, a pressure plate slidably installed inside the rotating seat for pressing the engine cylinder block, and a lead screw rotatably installed inside the rotating seat, wherein the rod wall of the lead screw is threadedly connected to the inner wall of the pressure plate.

[0016] A drive motor is fixedly installed on the top surface of the support plate, a gear is fixedly installed on the output shaft of the drive motor, a gear ring adapted to the gear is fixedly installed on the outer wall of the tool holder, and a protective box for protecting the gear ring and the gear is fixedly installed on the bottom surface of the support plate.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: In this multi-specification engine block milling machine with rapid positioning, an arc-shaped elastic plate senses the upward thrust of accumulated chips inside the cylinder, driving the lifting ring, connecting rod, and baffle to block the radial coolant outlet channel. Under the conical pressure of the fixed cover, the arc-shaped elastic plate retracts axially towards the tool holder, while the mechanical traction of the first and second connecting ropes opens the piston-blocked communication groove. This achieves a purely mechanical adaptive switching of the coolant spray mode according to the chip removal status and automatic chip removal channel avoidance. This solves the problems of difficult top spray penetration into the cutting zone and chip accumulation blockage during deep hole milling, achieving a dynamic balance between radial cooling and powerful top flushing.

[0018] 2. In this multi-specification engine cylinder block milling equipment with rapid positioning, the impact and push of the ejected chips against the arc-shaped elastic plate causes the bottom end to periodically flip upwards and downwards under the tension of the V-shaped elastic plate. Combined with the spiral downward coolant jet, and the rotating seat in the clamping assembly adapting to the cylinder block angle with the arc-shaped seat, and the rotating screw driving the pressure plate to move and clamp, this achieves the effect of forcibly bending and breaking continuous strip-shaped chips and rapidly positioning and clamping multi-specification cylinder blocks. This avoids the chip removal hazards caused by long chips entangled in the cutter head, significantly shortens the changeover and adjustment time for different cylinder block specifications, and improves the equipment's processing adaptability and operational stability under complex working conditions. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the operating console in this invention; Figure 3 This is a schematic diagram of the installation of the toothed ring in this invention; Figure 4 This is a schematic diagram of the installation of the infusion tube in this invention; Figure 5 This is a schematic diagram of the installation of the top liquid outlet nozzle in this invention; Figure 6 This is a cross-sectional view of the tool holder in this invention; Figure 7 For the present invention Figure 6 Enlarged structural diagram at point A in the middle; Figure 8 For the present invention Figure 6 Enlarged structural diagram at point B; Figure 9 For the present invention Figure 6 Enlarged structural diagram at point C; Figure 10 This is a schematic diagram of the installation of the limiting rod in this invention; Figure 11 This is a schematic diagram showing the radial liquid outlet channel of the present invention being blocked by a baffle.

[0020] The meanings of the labels in the diagram are as follows: 100. Blade tip; 101. Blade holder; 102. Infusion tube; 103. Adaptor tube; 104. Top outlet nozzle; 105. Axial flow channel; 106. Radial outlet channel; 107. Guide cage; 108. Connecting groove; 109. Mounting groove; 110. Piston; 200. Lifting ring; 201. Arc-shaped elastic plate; 202. V-shaped elastic plate; 203. Connecting rod; 204. Baffle; 205. Fixing ring; 206. Fixing cover; 207. First connecting rope; 208. First annular groove; 209. Second annular groove; 210. First annular block; 211. First telescopic rod; 212. Second annular block; 213. Second telescopic rod; 214. Second connecting rope; 215. Limiting rod; 216. Limiting groove; 300. Bearing plate; 301. Drive motor; 302. Gear; 303. Gear ring; 304. Protective box; 305. Mounting bracket; 306. Lifting seat; 307. Base; 400. Operating table; 401. Fixed seat; 402. Rotating seat; 403. Lead screw; 404. Pressure plate; 405. Support plate; 406. Arc-shaped seat. Detailed Implementation

[0021] The technical solutions of this invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0022] Therefore, the milling equipment mentioned above uses a method of spraying coolant downwards from the top of the workpiece. While this method can meet the cooling needs of general flat or shallow cavity workpieces, it is difficult to adapt to the milling conditions of deep hole structures such as cylinder inner walls. Example 1, see reference... Figure 1 and Figure 5 As shown, the present invention discloses a multi-specification engine cylinder block milling device with rapid positioning, including a clamping assembly for clamping the workpiece, a tool holder 101 disposed on the top of the tool head 100, and a tool head 100 disposed at the bottom end of the tool holder 101. A liquid inlet tube 102 is rotatably disposed at the top end of the tool holder 101. An axial flow channel 105 communicating with the inside of the liquid inlet tube 102 is opened inside the tool holder 101. A radial liquid outlet channel 106 communicating with the axial flow channel 105 is opened on the outer wall of the tool holder 101. A transfer tube 103 communicating with the inside of the liquid inlet tube 102 is fixedly installed on the outer wall of the liquid inlet tube 102. A top liquid outlet nozzle 104 is fixedly installed at the liquid outlet end of the transfer tube 103. The outer wall of the tool holder 101 is provided with a triggering component, which includes a lifting ring 200 slidably installed on the outer wall of the tool holder 101 and a plurality of arc-shaped elastic plates 201 arranged circumferentially along the lifting ring 200. The top end of the arc-shaped elastic plate 201 is fixedly connected to the outer wall of the lifting ring 200.

[0023] Specifically, by setting up the axial flow channel 105 and the radial liquid outlet channel 106, the coolant can be directly and laterally sprayed onto the cutting area of ​​the cylinder inner wall in the initial state, breaking through the vapor film barrier. Furthermore, during normal cutting, the high-pressure coolant sprayed from the radial liquid outlet channel 106 can precisely cool the cylinder inner wall and the cutting head 100 and flush away the chips. When chip removal in the cylinder is obstructed, and chips accumulate and push upwards against the arc-shaped elastic plate 201, the triggering component senses the obstruction and switches to the top liquid outlet nozzle 104 for high-flow-rate pouring. This utilizes gravitational potential energy to powerfully flush away the accumulated chips, breaking the local chip vortex and restoring smooth chip removal.

[0024] It should be noted that, in combination Figure 3 As shown, the multi-specification engine cylinder block milling equipment also includes a base 307 disposed on one side of the cutter head 100, a lifting seat 306 slidably mounted on the outer wall of the base 307, a mounting bracket 305 fixedly mounted on the outer wall of the lifting seat 306, and a support plate 300 slidably mounted on the outer wall of the mounting bracket 305. The top of the tool holder 101 is rotatably connected to the bottom surface of the support plate 300, the outer wall of the infusion tube 102 is fixedly connected to the outer wall of the support plate 300, and the inner wall of the tool holder 101 is rotatably fitted with the outer wall of the infusion tube 102. Specifically, the sliding of the support plate 300 on the mounting bracket 305 enables lateral adjustment of the tool center to adapt to the cylinder alignment requirements of different cylinder diameters or positions. The sliding of the lifting seat 306 on the base 307 drives the entire cutting spindle to move up and down, realizing the feed cutting of the tool in the deep hole of the cylinder.

[0025] In this process, the tool holder 101 rotates at high speed with the tool head 100 for cutting, while the infusion tube 102 remains stationary. The tool holder 101 and the infusion tube 102 are connected by a rotating mechanism to achieve a sealed fit. This allows the coolant to be smoothly introduced from the stationary infusion tube 102 into the rotating tool holder 101, while also preventing the tubes from getting tangled.

[0026] It should also be noted that the radial liquid outlet channel 106 is a spiral downward liquid outlet channel. In deep hole milling, chips are easily splashed upward or wrapped around the tool holder 101 by centrifugal force. The spiral downward jet has a clear downward axial momentum, which, while breaking through the vapor film, forces the broken C-shaped chips or fragments downward. Combined with the mechanical blocking of the arc-shaped elastic plate 201, it effectively interrupts the upward accumulation path of the chips and achieves directional chip removal.

[0027] Depend on Figure 6 and Figure 7As shown, the triggering component also includes a connecting rod 203 fixedly installed on the bottom surface of the lifting ring 200, a baffle 204 fixedly installed on the bottom end of the connecting rod 203 for blocking the radial liquid outlet channel 106, a V-shaped elastic plate 202 connected between the arc-shaped elastic plate 201 and the connecting rod 203, a fixing cover 206 fixedly installed on the outer wall of the knife handle 101, and a fixing ring 205 fixedly installed on the outer wall of the knife handle 101. The fixing cover 206 is located at the top of the lifting ring 200, the fixing ring 205 is located at the bottom of the lifting ring 200, one end of the V-shaped elastic plate 202 is fixedly connected to the inner wall of the arc-shaped elastic plate 201, and the other end is fixedly connected to the outer wall of the connecting rod 203.

[0028] Specifically, during normal cutting, on the one hand, after the chips detach from the cutting edge, they are usually discharged in a continuous band-like spiral upward or outward. After being discharged, the chips will first impact or adhere to the inner wall of the arc-shaped elastic plate 201. The curved surface structure of the arc itself plays a certain role in chip breaking and chip blocking, forcibly changing the natural flow direction of the chips, forcing them to curl, and increasing the amount of chip deformation.

[0029] On the other hand, the continuously discharged chips come into contact with the inner wall of the arc-shaped elastic plate 201. The bottom end of the arc-shaped elastic plate 201 is slightly flipped upward under the influence of the thrust, but the flipping angle is limited under the pulling force of the V-shaped elastic plate 202. Therefore, under the pulling force of the V-shaped elastic plate 202, the bottom end of the arc-shaped elastic plate 201 can be driven to rotate downward to reset. The bottom end of the arc-shaped elastic plate 201 flips slightly upward to make room, and the chips slide in accordingly. Then, under the pulling force of the V-shaped elastic plate 202, the bottom end of the arc-shaped elastic plate 201 quickly rotates downward to reset. This periodic action is equivalent to dynamically applying periodic downward compression and bending force to the continuously flowing chips. A severe bending stress will be generated between the root of the chip (the part close to where the blade just cut) and the bottom end of the arc-shaped elastic plate 201. When this dynamic bending stress exceeds the fracture limit of the chip material at that temperature, the continuous ribbon-like chips will be broken into C-shaped or fragmented pieces. By using the elastic micro-movement of the arc-shaped elastic plate 201, the continuous chips are forced to curl and bend repeatedly, effectively preventing long strip-shaped chips from wrapping around the cutter head 100 or tangling in the cylinder, thus reducing the hidden danger of poor chip removal from the source.

[0030] When chip removal within the cylinder is obstructed, chips accumulate and push upwards against the arc-shaped elastic plate 201. Multiple arc-shaped elastic plates 201, V-shaped elastic plates 202, lifting rings 200, connecting rods 203, and baffles 204 move upwards under the continuous thrust of the chips. During this movement, the baffles 204 gradually block the radial liquid outlet channel 106, thus cutting off the radial liquid supply and preparing for switching to top spraying. Furthermore, the fixed cover 206 and the fixed ring 205 limit the movement of the lifting ring 200 from both above and below, ensuring it can only slide smoothly along the axial direction of the tool holder 101, preventing swaying of the structure during high-speed rotation. Then through Figure 7 As can be seen, the fixing cover 206 is cone-shaped. It should be noted that the fixing cover 206 is cone-shaped so that after the multiple arc-shaped elastic plates 201 move upward, its inner wall can simultaneously squeeze the outer wall of the multiple arc-shaped elastic plates 201, so that the multiple arc-shaped elastic plates 201 contract in the axial direction of the tool holder 101, thereby forming a space between the tool and the inner wall of the cylinder for the coolant to flow downward.

[0031] refer to Figure 8 A limiting rod 215 is fixedly installed on the top surface of the fixed ring 205, and a limiting groove 216 is provided on the bottom surface of the lifting ring 200 for the limiting rod 215 to pass through. The cooperation of the limiting rod 215 and the limiting groove 216 can guide the lifting ring 200, so that it can only move vertically up and down with the tool holder 101.

[0032] Combination Figure 9 As can be seen, the triggering component also includes a connecting groove 108 that is opened inside the adapter tube 103 and communicates with the inside of the infusion tube 102, an installation groove 109 that is opened inside the adapter tube 103 and communicates with the inside of the connecting groove 108, a piston 110 that is slidably installed inside the installation groove 109 for blocking the connecting groove 108, and a guide cage 107 that is fixedly installed inside the installation groove 109 for limiting the sliding direction of the piston 110.

[0033] Furthermore, in the initial state, the piston 110 is located within the mounting groove 109 and blocks the connecting groove 108, preventing coolant from entering the top outlet nozzle 104. Only when the piston 110 disengages from the connecting groove 108 can the coolant flow through the connecting groove 108 to the top outlet nozzle 104. The guide cage 107 ensures the piston 110 maintains axial stability during sliding while allowing coolant to flow through its gaps without obstructing the flow.

[0034] Combination Figure 8As shown, the triggering component also includes a first annular groove 208 inside the handle 101, a second annular groove 209 at the bottom of the infusion tube 102, a second annular block 212 slidably mounted inside the second annular groove 209 via a second telescopic rod 213, a first annular block 210 slidably mounted inside the first annular groove 208 via a first telescopic rod 211, a first connecting rope 207 connecting the first annular block 210 and the lifting ring 200, a first through hole inside the handle 101 for the first connecting rope 207 to slide, a second connecting rope 214 connecting the second annular block 212 and the piston 110, and a second through hole inside the infusion tube 102 for the second connecting rope 214 to slide, and the bottom surface of the second annular block 212 is rotatably connected to the top surface of the first annular block 210.

[0035] Furthermore, by Figure 11 It can be seen that when the lifting ring 200 moves upward, the first connecting rope 207 is loosened, allowing the first annular block 210 to slide inside the second annular groove 209. Since the tool holder 101 is rotating during cutting, while the infusion tube 102 does not rotate, the rotational connection between the first annular block 210 and the second annular block 212 can transmit both axial push and pull forces and allow relative rotation. When the radial outlet channel 106 is completely blocked by the baffle 204, the piston 110 is pushed away from the connecting groove 108 by the water flow. The second connecting rope 214 moves synchronously with the piston 110 and pulls the second annular block 212 and the first annular block 210 to slide inside the second annular groove 209. At this time, the connecting groove 108 is opened, and the coolant spraying mode is switched to high-flow pouring from the top outlet nozzle 104. This purely mechanical linkage structure requires no additional electrical sensors and control cabinets, and has extremely high reliability and anti-interference capabilities in harsh cutting environments.

[0036] Back Figure 3 and Figure 4 As shown, a drive motor 301 is fixedly installed on the top surface of the support plate 300, a gear 302 is fixedly installed on the output shaft of the drive motor 301, a gear ring 303 adapted to the gear 302 is fixedly installed on the outer wall of the tool holder 101, and a protective box 304 for protecting the gear ring 303 and the gear 302 is fixedly installed on the bottom surface of the support plate 300.

[0037] Furthermore, after the drive motor 301 starts, it drives the tool holder 101 and the cutter head 100 below it to rotate at high speed for milling through the meshing transmission of the gear 302 and the gear ring 303. The protective box 304 encloses the gear transmission mechanism, effectively preventing splashed coolant and fine chips from entering the meshing tooth surface and causing wear, thus extending the service life of the transmission components.

[0038] pass Figure 2It can be seen that the fixture assembly includes an operating table 400 disposed at the bottom of the tool holder 101, a fixed seat 401 fixedly installed on the top surface of the operating table 400, a rotating seat 402 rotatably installed on the outer wall of the fixed seat 401, a support plate 405 fixedly installed on the outer wall of the rotating seat 402, an arc-shaped seat 406 fixedly installed on the outer wall of the support plate 405, a pressure plate 404 slidably installed inside the rotating seat 402 for pressing the engine cylinder block, and a lead screw 403 rotatably installed inside the rotating seat 402, wherein the rod wall of the lead screw 403 is threadedly connected to the inner wall of the pressure plate 404.

[0039] The clamping assembly enables rapid positioning of cylinder blocks of various sizes. The rotating base 402 can rotate on the fixed base 401, and in conjunction with the arc-shaped base 406, it can adapt to the shape of the engine cylinder block. By adjusting the angle of the rotating base 402, the cylinders on both sides of the engine cylinder block can be kept vertically aligned with the cutter head 100. The operator only needs to rotate the lead screw 403, using the threaded transmission to move the pressure plate 404, to quickly clamp or release cylinder blocks of different widths. The structure is simple and has a wide adjustment range, significantly reducing changeover time.

[0040] In addition, the top end of the infusion tube 102 is connected to an external fluid supply system (not shown in the figure). A coolant recovery tank (not shown in the figure) is provided on the top surface of the control panel 400.

[0041] The external coolant supply system is a closed-loop circulation coolant supply station consisting of a storage tank, a high-pressure supply pump, and a temperature control unit. It pressurizes clean coolant and delivers it to the inside of the delivery pipe 102. When the top nozzle 104 sprays down a large flow of chips, the coolant mixed with a large amount of chips flows out of the cylinder and falls into the coolant recovery tank on the operating table 400. The mixed chip waste liquid flowing back from the coolant recovery tank on the top surface of the operating table 400 first undergoes coarse solid-liquid separation via a chip conveyor, and then undergoes deep purification by a filtration device before flowing back to the storage tank of the external coolant supply system.

[0042] Working principle: The engine block is placed on the arc-shaped seat 406 of the clamping assembly. Rotating the lead screw 403 causes the pressure plate 404 to move horizontally, quickly clamping cylinder blocks of different widths. The support plate 300 slides laterally on the mounting bracket 305 to center the tool, and the lifting seat 306 slides on the machine base 307, causing the spindle to move downwards for feed. The drive motor 301 meshes with the gear ring 303 via the gear 302, driving the tool holder 101 and the tool head 100 to rotate at high speed. An external coolant supply system introduces coolant through the inlet pipe 102 and the axial flow channel 105.

[0043] Under normal cutting conditions, the coolant is ejected at high speed from the spiral downward radial outlet channel 106. When the chips are discharged, they impact the arc-shaped elastic plate 201. Under the tension of the V-shaped elastic plate 202, the bottom end of the arc-shaped elastic plate 201 periodically flips up to give way and presses down to reset, applying repeated bending force to the strip-shaped chips to break them into fragments. At the same time, the spiral downward jet pushes the fragments downward, and the arc-shaped elastic plate 201 blocks the chips to achieve smooth chip removal.

[0044] When chip removal is obstructed in the cylinder, chips accumulate and push upwards against the arc-shaped elastic plate 201. The lifting ring 200, connecting rod 203, and baffle 204 are pushed upwards along the tool holder 101. The upward movement of the baffle 204 gradually blocks the radial coolant outlet channel 106, while the conical fixed cover 206 simultaneously compresses the outer wall of the arc-shaped elastic plate 201, causing it to contract axially towards the tool holder 101, creating downward space for the top coolant. Simultaneously, as the lifting ring 200 moves upwards, the first connecting rope 207 is loosened, allowing the first annular block 210 to slide inside the second annular groove 209.

[0045] When the radial liquid outlet channel 106 is completely blocked by the baffle 204, the piston 110 is pushed away from the connecting groove 108 by the water flow. The second connecting rope 214 moves synchronously with the piston 110 and pulls the second annular block 212 and the first annular block 210 to slide inside the second annular groove 209. At this time, the connecting groove 108 is opened and the coolant spraying mode is switched to high-flow pouring by the top liquid outlet nozzle 104, using gravity to forcefully flush away the accumulated chips.

[0046] Once the chip removal is unobstructed and the upward thrust disappears, the lifting ring 200 and baffle 204 automatically reset under gravity, restoring the radial cooling mode. The flushed waste liquid flows into the coolant recovery tank of the operating table 400, and after separation and purification, it flows back to the external liquid supply system for recycling.

[0047] 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 preferred examples and are not intended to limit 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 multi-specification engine cylinder block milling machine with rapid positioning, comprising a clamping assembly for clamping the workpiece, a tool holder (101) disposed on the top of the cutter head (100), and a cutter head (100) disposed at the bottom end of the tool holder (101), characterized in that: The top of the knife handle (101) is rotatably provided with an infusion tube (102). An axial flow channel (105) communicating with the inside of the infusion tube (102) is opened inside the knife handle (101). A radial liquid outlet channel (106) communicating with the axial flow channel (105) is opened on the outer wall of the knife handle (101). A connecting pipe (103) communicating with the inside of the infusion tube (102) is fixedly installed on the outer wall of the infusion tube (102). A top liquid outlet nozzle (104) is fixedly installed at the liquid outlet end of the connecting pipe (103). The outer wall of the handle (101) is provided with a triggering component, which includes a lifting ring (200) slidably installed on the outer wall of the handle (101) and a plurality of arc-shaped elastic plates (201) arranged circumferentially along the lifting ring (200). The top of the arc-shaped elastic plates (201) is fixedly connected to the outer wall of the lifting ring (200). When milling a deep hole, coolant is initially sprayed out through the radial outlet channel (106). When the arc-shaped elastic plate (201) is pushed upward by the chips accumulated in the deep hole and moves upward to the preset position, the coolant spray channel is switched from the radial outlet channel (106) to the top outlet nozzle (104) so ​​that the chips can be washed away by the coolant sprayed by the top outlet nozzle (104).

2. The multi-specification engine cylinder block milling equipment according to claim 1, characterized in that: The triggering component also includes a connecting rod (203) fixedly installed on the bottom surface of the lifting ring (200), a baffle (204) fixedly installed on the bottom end of the connecting rod (203) for blocking the radial liquid outlet channel (106), a V-shaped elastic plate (202) connected between the arc-shaped elastic plate (201) and the connecting rod (203), a fixing cover (206) fixedly installed on the outer wall of the handle (101), and a fixing ring (205) fixedly installed on the outer wall of the handle (101). The fixing cover (206) is located at the top of the lifting ring (200), the fixing ring (205) is located at the bottom of the lifting ring (200), one end of the V-shaped elastic plate (202) is fixedly connected to the inner wall of the arc-shaped elastic plate (201), and the other end is fixedly connected to the outer wall of the connecting rod (203).

3. The multi-specification engine cylinder block milling equipment according to claim 2, characterized in that: The fixing cover (206) is cone-shaped.

4. The multi-specification engine cylinder block milling equipment according to claim 2, characterized in that: A limiting rod (215) is fixedly installed on the top surface of the fixed ring (205), and a limiting groove (216) is provided on the bottom surface of the lifting ring (200) for the limiting rod (215) to pass through.

5. The multi-specification engine cylinder block milling equipment according to claim 3, characterized in that: The triggering component also includes a connecting groove (108) opened inside the adapter tube (103) and communicating with the inside of the infusion tube (102), an installation groove (109) opened inside the adapter tube (103) and communicating with the inside of the connecting groove (108), a piston (110) slidably installed inside the installation groove (109) for blocking the connecting groove (108), and a guide cage (107) fixedly installed inside the installation groove (109) for limiting the sliding direction of the piston (110).

6. The multi-specification engine cylinder block milling equipment according to claim 5, characterized in that: The triggering component further includes a first annular groove (208) inside the handle (101), a second annular groove (209) at the bottom of the infusion tube (102), a second annular block (212) slidably mounted inside the second annular groove (209) via a second telescopic rod (213), a first annular block (210) slidably mounted inside the first annular groove (208) via a first telescopic rod (211), a first connecting rope (207) connecting the first annular block (210) and the lifting ring (200), a first through hole inside the handle (101) for the first connecting rope (207) to slide, a second connecting rope (214) connecting the second annular block (212) and the piston (110), and a second through hole inside the infusion tube (102) for the second connecting rope (214) to slide, and the bottom surface of the second annular block (212) is rotatably connected to the top surface of the first annular block (210).

7. The multi-specification engine cylinder block milling equipment according to claim 1, characterized in that: It also includes a base (307) disposed on one side of the blade head (100), a lifting seat (306) slidably mounted on the outer wall of the base (307), a mounting bracket (305) fixedly mounted on the outer wall of the lifting seat (306), and a support plate (300) slidably mounted on the outer wall of the mounting bracket (305). The top of the blade handle (101) is rotatably connected to the bottom surface of the support plate (300), the outer wall of the infusion tube (102) is fixedly connected to the outer wall of the support plate (300), and the inner wall of the blade handle (101) is rotatably fitted with the outer wall of the infusion tube (102).

8. The multi-specification engine cylinder block milling equipment according to claim 7, characterized in that: The top end of the infusion tube (102) is connected to an external infusion system.

9. The multi-specification engine cylinder block milling equipment according to claim 1, characterized in that: The clamp assembly includes an operating table (400) disposed at the bottom of the tool holder (101), a fixed seat (401) fixedly installed on the top surface of the operating table (400), a rotating seat (402) rotatably installed on the outer wall of the fixed seat (401), a support plate (405) fixedly installed on the outer wall of the rotating seat (402), an arc-shaped seat (406) fixedly installed on the outer wall of the support plate (405), a pressure plate (404) slidably installed inside the rotating seat (402) for pressing the engine cylinder, and a lead screw (403) rotatably installed inside the rotating seat (402), wherein the rod wall of the lead screw (403) is threadedly connected to the inner wall of the pressure plate (404).

10. The multi-specification engine cylinder block milling equipment according to claim 7, characterized in that: A drive motor (301) is fixedly installed on the top surface of the support plate (300), a gear (302) is fixedly installed on the output shaft of the drive motor (301), a gear ring (303) adapted to the gear (302) is fixedly installed on the outer wall of the tool holder (101), and a protective box (304) for protecting the gear ring (303) and the gear (302) is fixedly installed on the bottom surface of the support plate (300).

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