An automatic numerical control machine tool for processing a fuel injector housing

Abstract

This invention discloses an automated CNC machine tool for machining fuel injector housings, relating to the field of CNC machine tool technology. It includes a machine tool body, a cutting assembly housed in a mounting slot within the machine tool body, comprising a tool holder and a cutting tool for machining the fuel injector housing; a processing assembly housed on the side of the machine tool body via a robotic arm, comprising a sleeve and a nozzle; the robotic arm drives the sleeve to fit over the outer surface of the cutting tool, and the nozzle sequentially sprays alkaline cleaning agent and organic oil to remove debris adhering to the tool contour; a protective assembly slidably disposed at one end of the processing assembly, including an elastic element, for recovering the alkaline cleaning agent sprayed from the nozzle, and, based on the recovered amount, spraying a corresponding amount of organic oil to neutralize the alkaline cleaning agent remaining on the outer surface of the cutting tool; cleaning the inner wall of the processing chamber ensures cleanliness before spraying the alkaline cleaning agent and removes any residue adhering to the wall during spraying; the organic oil and alkaline cleaning agent are fully neutralized, promoting the separation of debris along the tool contour, thus cleaning the debris on the cutting tool.

Description

Technical Field

[0001] This invention relates to the field of CNC machine tool technology, and in particular to an automated CNC machine tool for machining fuel injector housings. Background Technology

[0002] The fuel injector is a core component of the engine. Its housing structure is complex and requires extremely high precision. The materials are mostly high-strength stainless steel or tool steel. The fuel injector housing is one of the core components of the engine's fuel system, which is directly related to the performance, reliability and life of the injector. Automated CNC machine tools deeply integrate precision machining, automation and information technology in modern manufacturing technology, and complete the precision machining process in the manufacturing of the fuel injection housing machining system.

[0003] For example, Chinese Patent No. CN111890102B discloses a highly automated CNC machine tool, including a base and a bed. A fixture for holding workpieces is rotatably connected to the bed, and a cutting tool for processing workpieces is slidably connected to the base. It also includes a support seat horizontally arranged above the base, and a drive mechanism for picking up, placing and flipping workpieces is provided on the lower end face of the support seat.

[0004] For example, Chinese Patent No. CN116475778A discloses an automated CNC machine tool, including a base. A groove is provided at the middle position of the top of the base, and a fixed seat is fixedly connected to the top of the inner cavity of the groove. The fixed seat has a cavity. The machine tool is equipped with a moving rod, a swing plate, a rotating gear, a lifting rack plate, and an electric push rod.

[0005] The above technical solutions have some problems in use. For example, when traditional machine tools use a large amount of overflow coolant to flush and cool the fuel injector housing in automated production, the machining accuracy requirements are high and difficult to control.

[0006] Existing methods often employ minimum lubrication to ensure better machining accuracy. However, during prolonged cutting, the amount of lubricant decreases, making it difficult for the tool profile to reach thermodynamic equilibrium. This causes the cutting tool to heat up, resulting in some chips adhering to the tool profile. Over time, these chips form built-up edge, and the tool accuracy cannot meet the high efficiency and stability requirements for fuel injector housing machining.

[0007] Traditional water rinsing and cleaning methods are insufficient to completely remove debris from inside the tool contour. While strong alkalis are used for cleaning, and organic oil is used to neutralize the alkali, the alkaline cleaning agent is prone to splashing and damaging other mechanical parts during the cleaning process. Furthermore, when the tool is in use and its temperature varies, directly spraying alkaline cleaning agent onto the outer surface of the tool can easily cause the tool to crack, affecting its accuracy and service life.

[0008] Furthermore, if some strong alkali adheres to the inside of the sleeve and cannot be completely and effectively recovered, it will reduce the detection accuracy of residual strong alkali on the tool surface, thereby affecting the subsequent amount of organic oil sprayed out. When there is too much organic oil, it is easy to adhere to the tool surface, causing waste of organic oil and seriously affecting the subsequent tool lubrication. When there is too little organic oil, it cannot fully neutralize the residual alkaline cleaning agent, which will damage the tool in the long run and make it difficult to meet the precision requirements of the fuel injector housing machining.

[0009] Therefore, it is necessary to solve the above problems by inventing an automated CNC machine tool for processing fuel injector housings. Summary of the Invention

[0010] The purpose of this invention is to provide an automated CNC machine tool for machining fuel injector housings, in order to solve the problems mentioned in the background art.

[0011] To achieve the above objectives, the present invention provides the following technical solution: including a machine tool body, and further comprising: A cutting assembly, which is disposed in a mounting slot of the machine tool body, includes a tool holder and a cutting tool, for machining the fuel injector housing; The processing component, which is set on the side of the machine tool body by a robotic arm, includes a sleeve and a nozzle. The robotic arm drives the sleeve to be fitted onto the outer surface of the tool, and the nozzle sprays alkaline cleaning agent and organic oil in sequence to remove the waste chips attached to the tool contour. A protective component, which is slidably disposed at one end of the processing component, includes an elastic element for recovering the alkaline cleaning agent sprayed from the nozzle, and for spraying a corresponding amount of organic oil from the nozzle to neutralize the alkaline cleaning agent remaining on the outer surface of the tool according to the amount recovered.

[0012] Preferably, the machine tool body includes: The bed is fixed to the ground and has a control unit and a power unit installed inside. The operator operates the control unit to drive the power unit to perform automated CNC machining of the fuel injector housing. The turret is fixedly connected to one end of the power unit and is used by the power unit to drive the turret to move and rotate for tool changing and to cut the raw material of the fuel injector housing.

[0013] Preferably, the cutting assembly further includes: The connecting part is fixedly installed in the mounting groove around the turret and is used to install and fix the tool holder or drive the tool holder to move. Multiple sets of connecting parts are arranged in an array around the turret. The tool holder is fixed to the output end of the connecting part. One end of the tool is fixedly installed inside the tool holder. Different types of tools are installed, which are used by the connecting part to drive the tool holder to move the tool to perform different cutting operations on the fuel injector housing material.

[0014] Preferably, the processing component further includes: The liquid storage chamber is located inside the sleeve on the side near the robotic arm, and it stores alkaline cleaning agent and organic oil respectively. The nozzle input end is connected to the inside of the storage chamber through the liquid inlet pipe. Two types of nozzles are arranged in an array at the top of the sleeve, which are used to draw alkaline cleaning agent and organic oil from the storage chamber and spray them in sequence. A flow detection device is fixedly installed inside the liquid inlet pipe to detect the alkaline cleaning agent and organic oil being conducted.

[0015] Preferably, the processing component further includes: The processing chamber is located inside the sleeve on the side away from the robotic arm. It is used for the cutting tool to extend into the processing chamber so that the nozzle sprays alkaline cleaning agent inside the processing chamber to wash away the waste on the surface of the cutting tool. The inlet pipe is connected to the bottom of the processing chamber. Both the inlet pipe and the outlet pipe are fixedly equipped with flow detection devices to detect the amount of alkaline cleaning agent and organic oil being conducted. Based on the flow difference of the alkaline cleaning agent detected by the flow detection device, the residual alkaline cleaning agent on the blade surface is determined, and the corresponding amount of organic oil is sprayed from the nozzle to neutralize it.

[0016] Preferably, the processing component further includes: A temperature detection device is installed on the side wall of the processing chamber near the liquid storage chamber to detect the surface temperature of the cutting tool. The position detection device is installed at the center of the side wall of the processing chamber next to the temperature detection device, and is used to detect the position of the cutting tool inside the processing chamber.

[0017] Preferably, the protective component further includes: The air outlet is located inside the elastic element, and multiple sets of them face the inner surface and the inner center of the processing chamber, respectively. The outer surface of the elastic element has an air inlet. A one-way air outlet valve is installed inside the air outlet, and a one-way air inlet valve is installed inside the air inlet. When the elastic element is squeezed, the internal gas is ejected through the air outlet to clean the alkaline cleaning agent suspended on the inner wall of the processing chamber and to rinse the surface texture of the tool with the alkaline cleaning agent. One end of the elastic element is rotatably connected to the end of the sleeve away from the robotic arm.

[0018] Preferably, the protective component further includes: The collision plate is fixedly connected to the other end of the elastic element on its side. When it collides with the tool holder, the elastic element is squeezed inward and expands to contact the surface of the tool, thus sealing the inside of the processing chamber. The retaining ring is fixedly installed on the outside of the collision plate. The protrusion on the retaining ring surface engages with the groove on the tool holder surface, so that the tool holder and tool rotate slowly during cleaning, driving the collision plate and elastic element to rotate, thereby cleaning the alkaline cleaning agent suspended on the inner wall of the treatment cavity and fixing the flushing tool.

[0019] The technical effects and advantages of this invention are as follows: 1. In this invention, the machine tool uses minimal lubrication processing to precisely spray a tiny amount of lubricating oil mixed with compressed air onto the cutting area of ​​the tool and the workpiece. Through a very small amount of efficient lubrication, friction, heat and tool wear can be significantly reduced. The temperature of the processing area is relatively stable, reducing the thermal deformation of the workpiece and meeting the higher precision requirements of fuel injector housing processing.

[0020] 2. In this invention, the machine tool removes the waste chips caused by the heating of the cutting tool by rinsing it with an alkaline cleaning agent after cutting, thus avoiding the formation of built-up edge, ensuring the accuracy of the cutting tool and extending its service life. This fully meets the high-efficiency and stable precision requirements for the machining of fuel injector housings. At the same time, the alkaline cleaning agent is neutralized by organic oil, which prevents the alkaline cleaning agent from damaging the cutting tool due to long-term residue. The product has a simple lubricating effect and is easy to volatilize, so it does not affect the subsequent use of the cutting tool.

[0021] 3. In this invention, the elastic element compresses and seals the inside of the sleeve, ensuring that the alkaline cleaning agent is only used inside the sleeve. This prevents strong alkali from splashing out and damaging other mechanical parts. At the same time, it cleans the alkaline cleaning agent adhering to the walls of the processing chamber inside the sleeve. It ensures that the difference between the amount of alkaline cleaning agent entering the processing chamber and the amount discharged is used to determine the amount of alkaline cleaning agent remaining on the tool surface. This allows for more precise quantitative neutralization with organic oil, ensuring complete removal of the alkaline cleaning agent and preventing residual organic oil from affecting the use of the tool.

[0022] 4. In this invention, when the elastic element is compressed, it rotates towards the air outlet on the inner surface and center of the processing chamber to spray air, cleaning the inner wall of the processing chamber to ensure cleanliness before the alkaline cleaning agent is sprayed. At the same time, air is blown laterally along the tool contour to loosen the debris in the tool contour. The air circulates on the tool surface, which can ventilate and cool the tool to a certain extent, avoiding sudden temperature changes caused by direct contact between the sprayed alkaline cleaning agent and the tool, which may lead to deformation or even cracking of the tool. This ensures the stability of the process of spraying alkaline cleaning agent on the tool.

[0023] 5. In this invention, when the elastic element is squeezed, it rotates and sprays air towards the air outlet on the inner surface and the center of the processing chamber, which solves the problem of alkaline cleaning agent sticking to the wall during cleaning spray. During spraying, the alkaline cleaning agent is precisely cleaned along the tool contour to promote the complete separation of waste along the tool contour and ensure that the alkaline cleaning agent cleans the waste in the tool contour more thoroughly. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the turret structure of the present invention; Figure 3 For the present invention Figure 2 Enlarged structural diagram at point A in the middle; Figure 4 This is a schematic diagram of the processing component structure of the present invention; Figure 5 This is a cross-sectional view of the processing component of the present invention; Figure 6 This is a schematic diagram of the nozzle position structure of the present invention; Figure 7 This is a schematic diagram of the protective component structure of the present invention; Figure 8 For the present invention Figure 7 Enlarged structural diagram at point B.

[0025] In the diagram: 1. Machine tool body; 101. Bed; 102. Control unit; 103. Power unit; 104. Turret; 2. Cutting assembly; 201. Connecting part; 202. Tool holder; 203. Tool; 3. Robotic arm; 4. Processing assembly; 401. Sleeve; 402. Liquid storage chamber; 403. Liquid inlet pipe; 404. Nozzle; 405. Processing chamber; 406. Liquid outlet pipe; 407. Flow detection device; 408. Temperature detection device; 409. Position detection device; 5. Protective assembly; 501. Elastic element; 502. Air outlet; 503. One-way air outlet valve; 504. Collision plate; 505. Snap ring; 506. Air inlet; 507. One-way air inlet valve. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] Example 1 During the use of automated CNC machine tools for fuel injector housing machining, the fuel injector housing machining adopts a minimum amount of lubrication machining method to ensure better machining accuracy. During the machining process, when the cutting tool 203 is used for a long time, due to the significant reduction in lubrication dosage, the profile of the cutting tool 203 is difficult to reach thermodynamic equilibrium during machining. Partial heating of the cutting tool 203 causes some waste chips to adhere to the profile of the cutting tool 203. Over time, the adhered waste chips form built-up edge, causing the cutting tool 203 to fail prematurely. The accumulated built-up edge is not only difficult to remove, but the removal process may even damage the cutting tool 203, affecting its service life and making it impossible to meet the high efficiency and stable accuracy requirements of fuel injector housing machining.

[0028] This invention provides, for example Figures 1 to 5 An automated CNC machine tool for machining fuel injector housings is shown, comprising: The machine tool body 1 includes a bed 101, which is fixed to the ground. Inside the bed is a control unit 102 and a power unit 103. The operator operates the control unit 102 to drive the power unit 103 for automated CNC machining of the fuel injector housing. The machine tool employs minimal lubrication machining, precisely spraying a tiny amount of lubricating oil mixed with compressed air onto the cutting area between the tool 203 and the workpiece. This small but efficient lubrication significantly reduces friction, heat, and tool 203 wear. The relatively stable temperature in the machining area reduces thermal deformation of the workpiece, meeting the higher precision requirements of fuel injector housing machining. A turret 104, fixedly connected to one end of the power unit 103, is used by the power unit 103 to drive the turret 104 to move and rotate for tool changing, cutting the fuel injector housing material. This ensures positional accuracy between all features, better balancing machining accuracy, tool 203 lifespan, environmental requirements, and the needs of automated production.

[0029] The cutting assembly 2, housed in the mounting slot of the machine tool body 1, includes a tool holder 202 and cutting tools 203 for machining the fuel injector housing. The cutting assembly 2 also includes a connecting portion 201, fixedly mounted in the mounting slot around the turret 104, for mounting and fixing the tool holder 202 or driving its movement. Some cutting tools 203 are fixed to the connecting portion 201 via the tool holder 202. The cutting edges of these tools are exposed and small, making them less prone to built-up edge formation and requiring no treatment. Meanwhile, some composite tools 203, such as cutting edges of drills or reamers, are fixed to the output end of the connecting portion 201 via the tool holder 202. These tools are movable and prone to building-up edge formation when penetrating the workpiece. The cutting tool 203 is processed; multiple sets of connecting parts 201 are arranged in an array around the turret 104; the tool holder 202 is fixed to the output end of the connecting part 201; one end of the cutting tool 203 is fixedly installed inside the tool holder 202; and the cutting tool 203 is installed with different models, which are used by the connecting part 201 to drive the tool holder 202 to move the cutting tool 203 to perform different cutting operations on the fuel injector housing material; the robotic arm 3 drives the sleeve 401 to be fitted on the surface of the cutting tool 203 to clean the cutting tool 203; the cutting tool 203 is cleaned after each use, so as to avoid the accumulation of waste chips adhering to the contour of the cutting tool 203 to form built-up edge, which would affect the accuracy and service life of the cutting tool 203 in subsequent use.

[0030] The processing component 4, which is mounted on the side of the machine tool body 1 via a robotic arm 3, includes a sleeve 401 and a nozzle 404. The robotic arm 3 drives the sleeve 401 to fit onto the outer surface of the cutting tool 203, causing the nozzle 404 to sequentially spray alkaline cleaning agent and organic oil to remove the waste debris adhering to the contour of the cutting tool 203. The processing component 4 also includes a liquid storage chamber 402, which is located inside the sleeve 401 near the robotic arm 3, and stores alkaline cleaning agent and organic oil respectively. The input end of the nozzle 404 is connected to the inside of the liquid storage chamber 402 through a liquid inlet pipe 403, and the nozzles 404 are arranged in an array at the top inside the sleeve 401. There are two types of alkaline cleaning agent and organic oil, which are used to extract alkaline cleaning agent and organic oil from the storage chamber 402 and spray them sequentially. A flow detection device 407 is fixedly installed inside the inlet pipe 403 to detect the alkaline cleaning agent and organic oil being conducted. The flow detection device 407 in the inlet pipe 403 detects the amount of alkaline cleaning agent entering the processing chamber 405, while the flow detection device 407 in the outlet pipe 406 detects the amount of alkaline cleaning agent being discharged from the processing chamber 405. This allows for the determination of the amount of alkaline cleaning agent remaining on the surface of the cutter 203. The sprayed organic oil reacts with the alkaline cleaning agent on the surface of the cutter 203 to form soap.

[0031] The processing component 4 also includes a processing chamber 405, which is located inside the sleeve 401 on the side away from the robotic arm 3. The cutting tool 203 extends into the processing chamber 405, allowing the nozzles 404 to spray alkaline cleaning agent inside the chamber to wash away debris from the surface of the cutting tool 203. The nozzles 404 are arranged with a denser distribution near the end of the robotic arm 3 (the tip of the cutting tool 203) and a sparser distribution away from the end of the robotic arm 3 (the tip of the cutting tool 203), thus more accurately targeting the areas of the cutting tool 203 where heat is easily generated and debris adheres. A drain pipe 406 has its inlet connected to the bottom of the processing chamber 405, and a flow detection device 407 is fixedly installed inside. This device detects the amount of alkaline cleaning agent being transferred, allowing for the determination of residual alkaline cleaning agent on the surface of the cutting tool 203 and the appropriate spraying of the corresponding agent. A certain amount of organic oil is neutralized, and a filter component is provided at the inlet end of the drain pipe 406 to separate the alkaline cleaning agent from the fallen waste at the bottom of the treatment chamber 405; a temperature detection device 408 is installed on the side wall of the treatment chamber 405 near the liquid storage chamber 402 to detect the surface temperature of the blade 203, so that the nozzle 404 sprays an appropriate amount of alkaline cleaning agent inside the treatment chamber 405; a position detection device 409 is installed at the center of the side wall of the treatment chamber 405 next to the temperature detection device 408 to detect the position of the blade 203 inside the treatment chamber 405. The position detection device 409 detects the position of the blade 203 and provides feedback to adjust the movement of the robotic arm 3 and the sleeve 401, which is suitable for processing different types of blades 203.

[0032] In summary, the minimum amount of lubrication machining method (MQL, or semi-dry machining) is used. It does not completely eliminate the need for cutting fluid, but rather mixes a very small amount of lubricating oil with compressed air to form micron-sized oil mist particles, which are then precisely sprayed onto the cutting area between the tool 203 and the workpiece. Through minimal but highly efficient lubrication, friction, heat, and tool 203 wear can be significantly reduced, rather than relying on the large amount of liquid overflow coolant used in traditional methods for flushing and cooling. When applied to modern automated production lines, the material, precision requirements, and machining characteristics of fuel injector housings are highly compatible with the advantages of MQL.

[0033] The tolerances of key features of the injector housing, such as the nozzle seat and the mating holes of the needle valve assembly, are in the micrometer range. Traditional liquid immersion cooling may cause thermal shock to the workpiece, i.e., it is cooled during machining and then returns to room temperature after leaving the machining area, resulting in dimensional changes. This makes it difficult to meet the precision requirements of fuel injector housing machining. However, the temperature of the MQL machining area is relatively stable, reducing this thermal deformation and helping to maintain extremely high dimensional stability and consistency. When completing outer diameters, end faces, stepped holes, and milling various side features, MQL can provide excellent lubrication, protect the expensive composite tool 203, and ensure the positional accuracy between all features, better balancing machining accuracy, tool 203 life, environmental requirements, and the needs of automated production.

[0034] The operator stands beside the machine bed and operates the control unit 102 to drive the power unit 103 to move and process the fuel injector housing material. During this process, the tool 203 cuts the workpiece, and simultaneously, the oil mist inside the tool 203 precisely delivers oil to the cutting edge of the drill bit or reamer. The excellent lubrication performance of MQL effectively reduces friction between the tool 203 and the workpiece, inhibits the formation of built-up edge, ensures surface quality, and extends the tool 203's lifespan. After machining at the target position, the power unit 103 drives the turret 104 to move and rotate for tool retraction and tool change. Afterwards, the robotic arm 3 on the side of the turret 104... The movable end drives the sleeve 401 close to the previously used cutter 203 for processing. As the cutter 203 gradually extends into the processing chamber 405 inside the sleeve 401, the position detection device 409 detects the position of the cutter 203 and provides feedback to adjust the movement of the sleeve 401 driven by the robotic arm 3. This process is suitable for processing different types of cutters 203, avoiding collision damage between the cutter 203 and the sleeve 401, and ensuring that the sleeve 401 is stably fitted onto the surface of the cutter 203 for cleaning. At the same time, the temperature detection device 408 senses the surface temperature of the cutter 203 and provides feedback to control the operation of the top nozzle 404 inside the processing chamber 405.

[0035] One set of nozzles 404 at the top of the processing chamber 405 is connected to the storage chamber 402 containing alkaline cleaning agent through a set of inlet pipes 403. At this time, the nozzles 404 draw alkaline cleaning agent from the storage chamber 402, which is detected by the flow detection device 407 and sprayed out at the top of the processing chamber 405. The sprayed high-pressure alkaline cleaning agent liquid washes the surface of the tool 203 under its own high-pressure flow. On the other hand, the alkaline cleaning agent is caustic soda, i.e., sodium hydroxide, which can better clean the debris in the contour of the tool 203. While the nozzles 404 are spraying and cleaning the tool 203, the connecting part 201 drives the tool holder 202 and the tool 203 to rotate slowly in the processing chamber 405 to ensure that the spraying and cleaning of the tool 203 is more comprehensive.

[0036] The alkaline cleaning agent sprayed by nozzle 404 collects at the bottom of the processing chamber 405 after cleaning the blade 203. Excess alkaline cleaning agent is discharged through drain pipe 406 after being detected by flow detection device 407. The flow detection device 407 in inlet pipe 403 detects the amount of alkaline cleaning agent entering the processing chamber 405, while the flow detection device 407 in drain pipe 406 detects the amount of alkaline cleaning agent discharged from the processing chamber 405. This allows for the determination of the amount of alkaline cleaning agent remaining on the surface of blade 203, thus determining the required amount of organic oil.

[0037] Because another set of nozzles 404 at the top of the processing chamber 405 is connected to the storage chamber 402 containing organic oil through another set of inlet pipes 403, the nozzles 404 draw organic oil from the storage chamber 402 and, after being detected by the flow detection device 407, spray it out at the top of the processing chamber 405. The sprayed organic oil reacts with the alkaline cleaning agent on the surface of the tool 203 to form soap, which provides a simple lubricating effect during the subsequent use of the tool 203. The soap is easy to evaporate but does not affect the subsequent use of the tool 203 and does not replace mechanical lubricating oil. In this way, the organic oil neutralizes the alkaline cleaning agent remaining on the surface of the tool 203. The amount of organic oil sprayed is slightly greater than the amount of alkaline cleaning agent remaining on the surface of the tool 203 to ensure that the alkaline cleaning agent can be fully neutralized. This completely neutralizes the alkaline cleaning agent remaining on the tool 203 and prevents the alkaline solvent from remaining on the surface of the tool 203 for a long time, which would damage the performance of the tool 203 and affect its service life.

[0038] The alkaline cleaning agent is a strong alkali. Both the sleeve 401 and the elastic element 501 are made of corrosion-resistant materials or coated with a protective layer. The sleeve 401, to a certain extent, prevents the alkaline cleaning agent from splashing, thus protecting other mechanical structures and operators. Furthermore, the robotic arm 3 can only move the sleeve 401 slightly during the alkaline cleaning agent spraying process to avoid splashing and damaging other mechanical parts. Simultaneously, the nozzles 404 are densely distributed near the end of the robotic arm 3 (the tip of the cutter 203) and sparsely distributed further away (the end of the cutter 203), thus more accurately targeting the areas where the cutter 203 is prone to heat and adhesion of debris. The parts are treated to ensure better cleaning effect. The waste debris adhering to the contour of the tool 203 is washed by alkaline cleaning agent and falls to the bottom of the treatment chamber 405. Since the tool 203 is cleaned after a single use and the temperature of the tool 203 does not rise significantly, the amount of waste debris adhering to the tool 203 is not large. The waste debris that falls to the bottom of the treatment chamber 405 with the alkaline cleaning agent is separated from the alkaline cleaning agent by the filter component at the input end of the drain pipe 406 when the alkaline cleaning agent is discharged. This small amount of waste debris is temporarily stored inside the sleeve 401 and will be cleaned by the staff later.

[0039] Example 2 Based on the above embodiments, the amount of alkaline cleaning agent remaining on the surface of the tool 203 is determined by judging the difference between the amount of alkaline cleaning agent entering the treatment chamber 405 and the amount of alkaline cleaning agent exiting the treatment chamber 405, thereby determining the amount of organic oil sprayed for neutralization. However, when the alkaline cleaning agent is sprayed at high pressure to wash the rotating tool 203, it often splashes in large quantities. In order to accommodate different types of tools 203, the opening of the sleeve 401 at the end where the tool 203 extends is relatively large. At this time, the splashed alkaline cleaning agent leaks out, especially into the connection end between the tool 203 and the tool holder 202, which is closest to the sleeve 401, affecting the stability of the tool 203 installed inside the tool holder 202. After cutting, the tool 203 experiences varying temperatures. If alkaline cleaning agent is sprayed directly onto the outer surface of the tool 203, it can easily cause cracking, affecting the tool's accuracy and service life. Furthermore, if the splashed alkaline cleaning agent is not promptly discharged through the drain pipe 406, or if it splashes inside the sleeve 401, it can easily adhere to the sleeve wall, resulting in an excessive amount of alkaline cleaning agent remaining on the surface of the tool 203. This leads to an excessive amount of sprayed organic oil adhering to the surface of the tool 203, wasting organic oil. Moreover, the lubricating and cooling properties of organic oil are significantly inferior to those of mechanical lubricating oil, thus the excessive organic oil residue severely affects the subsequent use of the tool 203.

[0040] like Figures 6 to 8The automated CNC machine tool for processing fuel injector housings, as shown, also includes a protective component 5, which is slidably disposed at one end of the processing component 4. This component includes an elastic element 501 for recovering the alkaline cleaning agent sprayed from the nozzle 404, allowing the nozzle 404 to spray a corresponding amount of organic oil to neutralize residues. The elastic element 501 compresses and expands inward, sealing the inside of the sleeve 401 at one end, ensuring the alkaline cleaning agent is only used inside the sleeve 401 and preventing splashing and leakage that could damage other mechanical parts. The protective component 5 also includes vent holes 502, which are located inside the elastic element 501, with multiple sets facing the inner surface and center of the processing chamber 405 respectively. An air inlet 506 is provided on the outer surface of the elastic element 501. A one-way air outlet diaphragm 503 is installed inside the vent hole 502, and a one-way air inlet diaphragm 507 is installed inside the air inlet 506. When the elastic element 501 is compressed, internal gas is ejected through the vent holes 502, cleaning the processing chamber. Alkaline cleaning agent suspended on the inner wall of chamber 405, along with the alkaline cleaning agent, washes along the surface texture of tool 203. The collision plate 504 and sleeve 401 press against elastic element 501, and the vent 502 on elastic element 501 sprays air towards the inner wall of processing chamber 405, thereby cleaning the inner wall of processing chamber 405. This ensures the inner wall of processing chamber 405 is clean before the alkaline cleaning agent is sprayed. During spraying, the vent 502 on elastic element 501 sprays air towards the inner wall of processing chamber 405 to clean up any residue caused by splashing alkaline cleaning agent. Before spraying the alkaline cleaning agent, the air outlet 502 on the elastic element 501 sprays air laterally toward the surface of the tool 203, which loosens the waste chips in the contour of the tool 203 and allows the air to circulate on the surface of the tool 203, which can provide a certain degree of ventilation and cooling for the tool 203. During spraying, the lateral air causes the alkaline cleaning agent to precisely clean along the contour of the tool 203, so as to promote the complete separation of waste chips along the contour of the tool 203. One end of the elastic element 501 is rotatably connected to the end of the sleeve 401 away from the robotic arm 3.

[0041] The protective assembly 5 also includes a collision plate 504, whose side is fixedly connected to the other end of the elastic element 501. The collision plate 504 impacts the tool holder 202, causing the elastic element 501 to expand inwards and contact the surface of the tool 203, thus sealing the interior of the processing chamber 405 to a certain extent. A retaining ring 505 is fixedly installed on the outside of the collision plate 504. The protrusion on the surface of the retaining ring 505 engages with the groove on the surface of the tool holder 202, allowing the tool holder 202 and tool 203 to rotate slowly during cleaning, thus rotating the collision plate 504 and the elastic element 501. This rotation cleans the alkaline cleaning agent suspended on the inner wall of the processing chamber 405 and fixes and washes the tool 203. The collision plate 504 moves to contact the tool holder 202. Simultaneously, the tool holder 202 drives the tool 203 to rotate slowly. The collision plate 504 moves with the sleeve 401 and the robotic arm 3, so that the retaining ring 505 engages with the groove on the surface of the tool holder 202. Alternatively, after the tool holder 202 and the tool 203 have rotated partially, the retaining ring 505 aligns with the groove on the surface of the tool holder 202 before engaging. This causes the tool holder 202 to drive the tool 203 to rotate, while simultaneously driving the elastic element 501 and the collision plate 504 to rotate. At the same time, when the elastic element 501 is under pressure, the vent 502 sprays out the gas inside the elastic element 501, and the gas flows unidirectionally inside the elastic element 501, preventing the liquid in the sleeve 401 from mixing into the interior of the elastic element 501 through the vent 502.

[0042] In summary, during use, the robotic arm 3 gradually moves the sleeve 401, causing the tool 203 to gradually extend into the sleeve 401. The sleeve 401 then moves the elastic element 501 and the collision plate 504, causing the collision plate 504 to contact the tool holder 202. The elastic element 501 prevents a rigid collision between the collision plate 504 and the tool holder 202. As the robotic arm 3 continues to move the sleeve 401, the collision plate 504 and the sleeve 401 compress the elastic element 501. Under pressure, the gas inside the elastic element 501 is unidirectionally transmitted through the one-way vent valve 503 inside the vent hole 502. The cleaning agent is discharged through the air outlet 502 facing the inner surface and center of the treatment chamber 405. The air outlet 502 facing the inner surface of the treatment chamber 405 sprays air to clean the inner wall of the treatment chamber 405, ensuring that the inner wall of the treatment chamber 405 is clean. This allows the alkaline cleaning agent splashed inside the treatment chamber 405 to slide better to the bottom of the treatment chamber 405 and be completely discharged through the drain pipe 406. At the same time, it avoids the presence of liquid residue from the previous cleaning process inside the treatment chamber 405, which would affect the flow detection device 407 in the drain pipe 406 to detect the alkaline cleaning agent.

[0043] The air outlet 502 facing the center of the processing chamber 405 pre-cleans the surface of the tool 203. The sleeve 401 moves back and forth along the outer surface of the tool 203 and the one-way air outlet diaphragm 503 continuously sprays gas into the processing chamber 405. The transverse air blowing along the contour of the tool 203 can better loosen the waste in the contour of the tool 203, so as to facilitate better cleaning later. The air circulation on the surface of the tool 203 can provide a certain degree of ventilation and cooling for the tool 203, avoiding direct contact between the sprayed alkaline cleaning agent and the tool 203, which could cause temperature change, deformation or even cracking of the tool 203, thereby affecting the performance and accuracy of the tool 203 and ultimately reducing the service life of the tool 203. When the temperature value detected by the temperature detection device 408 reaches the set temperature value, the sleeve 401 stops moving back and forth.

[0044] When the elastic element 501 is continuously compressed, it tends to flatten under pressure. At this time, the elastic element 501 expands inward and gradually contacts the surface of the tool 203, thereby providing a simple seal inside the sleeve 401. This effectively prevents the alkaline cleaning agent from splashing out and leaking, thus avoiding the subsequent high-pressure spray of alkaline cleaning agent from scouring and splashing onto the rotating tool 203. The leakage of alkaline cleaning agent from the sleeve 401 could damage other components and affect the stability of the tool 203 installed inside the tool holder 202. This also prevents excessive amounts of sprayed organic oil from adhering to the surface of the tool 203 and affecting subsequent use. It protects the external machinery of the sleeve 401, ensures the stability of the alkaline cleaning agent during use, and ensures the accuracy of neutralizing the alkaline cleaning agent with organic oil.

[0045] When the elastic element 501 expands inward and contacts the surface of the tool 203, the nozzle 404 activates and rapidly sprays alkaline cleaning agent onto the tool 203. Simultaneously, the robotic arm 3 drives the sleeve 401, in conjunction with the collision plate 504, to continue compressing the elastic element 501. This causes the gas inside the elastic element 501 to continue to be discharged through the vent 502 towards the inner surface and center of the processing chamber 405. At this time, the vent 502 towards the inner surface of the processing chamber 405 cleans the alkaline cleaning agent splashed liquid that is difficult to fall from the inner wall of the processing chamber 405, preventing the alkaline cleaning agent from splashing and adhering to the sleeve 401. This would prevent the amount of alkaline cleaning agent remaining on the surface of the tool 203 from being too large. Cleaning the alkaline cleaning agent adhering to the wall further accurately determines the amount of oil sprayed out, while the vent 502 towards the center of the processing chamber 405 discharges... The gas emitted drives the alkaline cleaning agent sprayed from part of the nozzle 404 to precisely clean along the contour of the tool 203, so as to better promote the separation of waste chips from the tool 203. The waste chips are washed and separated along the tool 203, which to a certain extent avoids the waste chips scratching the tool 203 and ensures better cleaning effect of the alkaline cleaning agent. The sleeve 401 is moved back and forth in a small range by the robotic arm 3, and the inward expansion part of the elastic element 501 is kept in contact with the surface of the tool 203. Thus, the air inlet hole 506 and the one-way air inlet valve 507 on the surface of the elastic element 501 continuously draw in external gas under the one-way conduction, and continuously discharge it through the air outlet hole 502 and the one-way air outlet valve 503 of the elastic element 501 toward the processing chamber 405. Moreover, the one-way pulse conduction of gas inside the elastic element 501 can prevent liquid from mixing in and affecting the use of the elastic element 501.

[0046] When the sleeve 401 moves the elastic element 501 and the collision plate 504, causing the collision plate 504 to contact the tool holder 202, the connecting part 201 drives the tool holder 202 to slowly rotate the tool 203. At this time, the retaining ring 505 on the side of the collision plate 504 engages with the slotted surface of the tool holder 202. Since the elastic element 501 is rotatably connected to the sleeve 401, the tool holder 202 drives the tool 203 to rotate while simultaneously driving the elastic element 501 and the collision plate 504 to rotate at one end of the sleeve 401. This allows the elastic element 501 to rotate and pulse air jet when reciprocated under pressure, ensuring that the air jet process of the air outlet 502 towards the inner surface and center of the processing chamber 405 is more uniform, and improving the cleaning of the inner wall of the processing chamber 405 and the transverse cleaning along the contour of the tool 203 to be more uniform and comprehensive.

[0047] When the robotic arm 3 stops moving the sleeve 401, the nozzle 404 stops spraying the alkaline cleaning agent. Based on the flow difference detected by the flow detection device 407 inside the liquid storage chamber 402 and the drain pipe 406, the amount of alkaline cleaning agent remaining on the surface of the tool 203 is determined. The nozzle 404 then quickly sprays a measured amount of organic oil for neutralization. After spraying stops, the drain pipe 406 conducts and collects some of the excess liquid. The robotic arm 3 drives the sleeve 401 to retract away from the tool 203. At this time, the connecting part 201 drives the tool holder 202 and the tool. 203 stops rotating, and the robotic arm 3 drives the sleeve 401 to continuously retract, colliding with the collision plate 504 and the retaining ring 505 to separate from the tool holder 202, completing the cleaning of waste chips on the surface of the tool 203, thereby preventing the accumulation of waste chips on the contour of the tool 203 to form a built-up edge. After the robotic arm 3 drives the sleeve 401 away from the tool 203, the set of tools 203 can be used again for subsequent fuel injector housing machining, and the robotic arm 3 drives the sleeve 401 to move again, thereby cleaning the tool 203 after different cutting uses, and continuing the above stroke.

[0048] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An automated numerical control machine tool for fuel injector housing machining, comprising a machine tool body (1), characterized in that, Also includes: The cutting assembly (2), which is disposed in the mounting slot of the machine tool body (1), includes a tool holder (202) and a cutting tool (203) for cutting the fuel injector housing; The processing component (4) is set on the side of the machine tool body (1) by the robotic arm (3), including a sleeve (401) and a nozzle (404). The robotic arm (3) drives the sleeve (401) to be fitted onto the outer surface of the tool (203), and the nozzle (404) sprays alkaline cleaning agent and organic oil in sequence to remove the waste chips attached to the contour of the tool (203). The processing component (4) further includes: a liquid storage chamber (402), which is located inside the sleeve (401) on the side near the robotic arm (3), and stores alkaline cleaning agent and organic oil respectively; the input end of the nozzle (404) is connected to the inside of the liquid storage chamber (402) through the liquid inlet pipe (403); The processing chamber (405) is located inside the sleeve (401) on the side away from the robotic arm (3). It is used for the cutting tool (203) to extend into the processing chamber (405) so that the nozzle (404) sprays alkaline cleaning agent inside the processing chamber (405) to wash the waste on the surface of the cutting tool (203). The drain pipe (406) has its input end connected to the bottom of the processing chamber (405). Both the inlet pipe (403) and the drain pipe (406) are fixedly equipped with flow detection devices (407) to detect the amount of alkaline cleaning agent and organic oil being conducted, and to determine the amount of alkaline cleaning agent remaining on the surface of the cutter (203) based on the flow difference of the alkaline cleaning agent detected by the flow detection device (407), so that the nozzle (404) sprays the corresponding amount of organic oil for neutralization. The protective component (5) is slidably disposed at one end of the processing component (4) and includes an elastic element (501). The protective component (5) further includes: an air outlet (502), which is opened inside the elastic member (501), and multiple sets are respectively facing the inner surface and the inner center of the processing chamber (405). A one-way air outlet valve (503) is installed inside the air outlet (502). When the elastic member (501) is squeezed, the internal gas is ejected through the air outlet (502) to clean the alkaline cleaning agent suspended on the inner wall of the processing chamber (405) and to wash the surface texture of the tool (203) with the alkaline cleaning agent.

2. An automatic NC machine for processing a fuel injector housing according to claim 1, wherein The machine tool body (1) includes: The bed (101) is fixed to the ground and has a control unit (102) and a power unit (103) installed inside it. The operator operates the control unit (102) to drive the power unit (103) to perform automated CNC machining of the fuel injector housing. The turret (104) is fixedly connected to one end of the power unit (103) and is used by the power unit (103) to drive the turret (104) to move and rotate for tool changing and to cut the raw material of the fuel injector housing.

3. An automatic NC machine for processing a fuel injector housing according to claim 2, wherein The cutting assembly (2) further includes: The connecting part (201) is fixedly installed in the mounting groove around the turret (104) for installing and fixing the tool holder (202) or driving the tool holder (202) to move. The connecting part (201) is arranged in multiple arrays around the turret (104). The tool holder (202) is fixed to the output end of the connecting part (201). One end of the tool (203) is fixedly installed inside the tool holder (202). The tool (203) is installed with different models, which are used by the connecting part (201) to drive the tool holder (202) to move the tool (203) to perform different cutting operations on the fuel injector housing material.

4. An automatic NC machine for processing a fuel injector housing according to claim 1, wherein The nozzles (404) are arranged in two types on the top of the sleeve (401) to draw alkaline cleaning agent and organic oil from the liquid storage chamber (402) and spray them in sequence.

5. An automatic NC machine for processing a fuel injector housing according to claim 1, wherein The processing component (4) further includes: A temperature detection device (408) is installed on the side wall of the processing chamber (405) near the liquid storage chamber (402) to detect the surface temperature of the cutting tool (203); A position detection device (409) is installed at the center of the side wall of the processing chamber (405) next to the temperature detection device (408) to detect the position of the cutting tool (203) inside the processing chamber (405).

6. An automatic NC machine for processing a fuel injector housing according to claim 1, wherein An air inlet (506) is provided on the outer surface of the elastic element (501), and a one-way air inlet valve (507) is installed inside the air inlet (506). One end of the elastic element (501) is rotatably connected to the end of the sleeve (401) away from the robotic arm (3).

7. An automatic NC machine for processing a fuel injector housing according to claim 6, wherein The protective component (5) also includes: The collision plate (504) is fixedly connected to the other end of the elastic element (501) on its side. When it collides with the tool holder (202), the elastic element (501) is squeezed and expands inward, and contacts the surface of the tool (203) to seal the inside of the processing cavity (405). A retaining ring (505) is fixedly installed on the outside of the collision plate (504). The protrusion on the surface of the retaining ring (505) engages with the groove on the surface of the tool holder (202), so that the tool holder (202) and the tool (203) rotate slowly during cleaning and drive the collision plate (504) and the elastic element (501) to rotate and clean the alkaline cleaning agent suspended on the inner wall of the cleaning chamber (405) and fix the flushing tool (203).

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