A safety protection device for CNC cutting machine used for oil cylinder processing

By integrating infrared sensors and semiconductor refrigeration sheets on laser CNC cutting machines, the problem of low heat dissipation efficiency in oil cylinder processing is solved, efficient cooling and safety protection are achieved, and processing accuracy and safety are improved.

CN118527843BActive Publication Date: 2024-12-27LOUDI DINGLI HYDRAULIC TECH CO LTD
View PDF 0 Cites 0 Cited by

Patent Information

Application Number
CN202410764282.6
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-06-13
Publication Date
2024-12-27
Estimated Expiration
2044-06-13

AI Technical Summary

Technical Problem

The existing laser CNC cutting machines have low thermal protection efficiency in oil cylinder processing, which may cause high temperatures to cause material deformation and fire risks, threatening the safety of operators.

Method used

A CNC cutting machine safety protection device including infrared sensors, semiconductor refrigeration sheets and multiple cooling systems was designed, and rapid cooling was achieved using gallium indium tin alloy solution and spiral water pipes, and water flushing and dust accumulation were prevented through the filtering mechanism.

Benefits of technology

It achieves efficient cooling, improves processing accuracy and safety, reduces fire risks, reduces maintenance costs, and is suitable for processing of various materials.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN118527843B_ABST
    Figure CN118527843B_ABST
Patent Text Reader

Abstract

The present invention provides a safety protection device for a CNC cutting machine for oil cylinder processing, and relates to the technical field of CNC cutting machines. The safety protection device for a CNC cutting machine for oil cylinder processing comprises a machine tool body and a cooling mechanism, both sides of the machine tool body are embedded with infrared sensor groups, the cooling mechanism comprises a support block, a refrigeration mechanism and a filtering mechanism, a waterproof water pump is fixedly provided at the upper end of the support block, a No. 5 water pipe is fixedly provided at the output end of the waterproof water pump, a C-type water pipe is fixedly connected to the upper end of the No. 5 water pipe, a bend group is fixedly connected to both sides of the upper end of the C-type water pipe, and a cooling nozzle is fixedly provided at the upper end of the two bend groups. The present invention provides a safety protection device for a CNC cutting machine with efficient cooling and automatic control, which can improve processing accuracy, enhance safety, facilitate maintenance, be environmentally friendly and have strong adaptability, and significantly improve the efficiency and quality of oil cylinder processing.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] The invention relates to the technical field of numerical control cutting machines, in particular to a safety protection device for numerical control cutting machines used for oil cylinder processing. Background Art

[0002] Cylinder machining refers to the process of manufacturing and processing the cylinder, which is a device used for mechanical transmission and transmits power through a hydraulic system. During the cylinder machining process, precise cutting, drilling and engraving are required to ensure that the various components of the cylinder can fit accurately and work properly. Laser CNC cutting machines are very important in cylinder machining because they can provide high-precision and high-speed cutting and engraving functions. Laser CNC cutting machines use laser beams to cut materials, which can achieve very fine processing and are suitable for processing high-demand parts. It can improve processing efficiency and accuracy, reduce material waste, and is suitable for a variety of metal and non-metal materials. Therefore, laser CNC cutting machines are widely used in the fine processing of cylinders.

[0003] Laser CNC cutting machines are used for precision cutting in oil cylinder processing. Due to the high energy density and high temperature characteristics of lasers, a large amount of heat will be generated during the working process. If this heat cannot be handled in a timely and effective manner, it is easy to cause a series of safety hazards. First, high temperature may cause deformation of the processed material, affecting the processing accuracy and quality of the finished product. Secondly, the high temperature of the laser may also cause fire risks in the processing area, threatening the safety of the operator. At present, the conventional cooling method is relatively simple, usually using air cooling or water cooling. However, these methods often seem to be powerless when dealing with the large amount of heat generated by laser cutting, and it is difficult to reduce the temperature in a timely and effective manner, and cannot provide sufficient safety protection. The air cooling method is limited by the heat conduction capacity of the air, and the cooling effect is limited; although the water cooling method has a better effect, it may face problems such as complex pipeline design and high maintenance costs in actual applications. Therefore, when using laser CNC cutting machines in oil cylinder processing, special attention should be paid to heat management and safety protection, and more efficient cooling technology and perfect safety measures should be adopted to ensure the safety of the processing process and the stability of product quality. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the present invention provides a safety protection device for a CNC cutting machine for oil cylinder processing, which solves the problem of low heat dissipation protection efficiency of the existing laser CNC cutting machine.

[0006] (II) Technical solution

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: a safety protection device for a CNC cutting machine for oil cylinder processing, comprising a machine tool body and a cooling mechanism, both sides of the machine tool body are embedded with infrared sensor groups, the cooling mechanism comprises a support block, a refrigeration mechanism and a filtering mechanism, a waterproof water pump is fixedly arranged on the upper end of the support block, a No. 5 water pipe is fixedly arranged on the output end of the waterproof water pump, the upper end of the No. 5 water pipe is fixedly connected with a C-type water pipe, both sides of the upper end of the C-type water pipe are fixedly connected with a bend group, and the upper ends of the two bend groups are fixedly provided with cooling nozzles;

[0008] The refrigeration mechanism comprises a refrigeration shell, a middle baffle is longitudinally fixedly arranged at the center of the interior of the refrigeration shell, a No. 1 sealing plate is fixedly arranged at the center of both sides of the middle baffle, a semiconductor refrigeration plate is embedded at the center of the front side of the two No. 1 sealing plates, and the refrigeration temperature of the semiconductor refrigeration plate is set to -19°C, a No. 2 sealing plate is fixedly arranged at both sides of the rear end of the middle baffle, a refrigeration cavity is formed between the No. 2 sealing plate, the middle baffle, the No. 1 sealing plate and the refrigeration shell, and a gallium indium tin alloy solution is arranged inside the refrigeration cavity;

[0009] A spiral water pipe is provided through the center of the rear side of the two No. 2 sealing plates, and the spiral water pipe and the No. 1 sealing plate are both made of copper material. A drainage cavity is provided at the center of the rear side of the middle baffle plate, and the front ends of the two spiral water pipes pass through the middle baffle plate to the interior of the drainage cavity and are connected to the No. 3 water pipe. Hollow plates are fixedly provided on both sides of the front end of the middle baffle plate, and a plurality of heat dissipation copper sheets are provided through the front ends of the two hollow plates;

[0010] The filtering mechanism comprises a filtering outer shell, the front end of which is movably sleeved with a filtering inner shell, the inner bottom surface and the inner top surface of the filtering inner shell are both fixedly provided with a plurality of dust-blocking inclined plates, and a No. 2 water pipe is provided between the filtering inner shell and the input end of the waterproof water pump.

[0011] Preferably, a numerical control controller is provided on one side of the machine tool body, and support legs are fixedly provided at the four corners of the lower end surface of the machine tool body.

[0012] Preferably, a supporting grid is fixedly provided on the upper end of the machine tool body, the lower end of the supporting block is fixedly provided on the inner bottom surface of the machine tool body, and the waterproof water pump is located inside the machine tool body.

[0013] Preferably, an adjustment track is provided at the upper end of the machine tool body, and a laser cutting head is provided on the adjustment track.

[0014] Preferably, the upper end of the bend pipe group passes through the supporting grid and is fixedly connected to the supporting grid, the cooling nozzle is located at the upper end of the supporting grid, and each bend pipe body of the bend pipe group is provided with an electric control valve.

[0015] Preferably, the upper end of the No. 3 water pipe passes through the middle baffle and the refrigeration shell and is connected to the rear end of the filter shell, and the middle baffle and the hollow plate are arranged in a through manner.

[0016] Preferably, the rear ends of the multiple heat dissipating copper plates are arranged in contact with the front heating end of the semiconductor refrigeration plate, the middle part of the tube body of the No. 5 water pipe is connected to the No. 4 water pipe, the front end of the No. 4 water pipe is fixedly connected to the No. 1 water pipe, and both ends of the No. 1 water pipe pass through the refrigeration shell and are respectively connected to the hollow plate.

[0017] Preferably, the front ends of the refrigeration housing and the filter housing are arranged through the front end of the machine tool body, and a part of the second water pipe is located at the front end of the machine tool body.

[0018] Working principle: When in use, when the adjustment track moves to the corresponding position, it will be detected by the infrared sensor, which can remind the corresponding electric control valve on the bending pipe of the bending group to close the operation. When there is no detection, it is in the open state, and the waterproof water pump and semiconductor refrigeration plate of the cooling mechanism are turned on at the same time. The cooling end of the semiconductor refrigeration plate will cool the gallium indium tin alloy solution, and the low-temperature gallium indium tin alloy solution will transfer the temperature to the No. 1 sealing plate, the middle baffle, the No. 2 sealing plate and the spiral water pipe. After the waterproof water pump is started, the water inside the machine tool body will first enter the spiral water pipe for cooling. The cooled water enters the No. 3 water pipe and then enters the process After filtering in the filter shell, it enters the No. 2 water pipe, waterproof water pump, No. 5 water pipe, C-type water pipe, and elbow group in turn, and is finally sprayed out through the cooling nozzle to cool the oil cylinder that has not been processed or the oil cylinder that has been processed. The water in the No. 5 water pipe enters the No. 1 water pipe through the No. 4 water pipe. After the cold water in the No. 1 water pipe enters the hollow plate, the heat dissipation copper sheet is cooled by the hollow plate, and then the cold water flows back into the machine tool body through the drainage cavity, realizing the effect of multiple cycle cooling and filtering. In this process, the refrigeration shell is embedded, which is easy to disassemble, and the filter inner shell is easy to pull out, which is more convenient for maintenance.

[0019] (III) Beneficial effects

[0020] The present invention provides a safety protection device for a CNC cutting machine used for oil cylinder machining. It has the following beneficial effects:

[0021] The present invention provides a safety protection device for a numerically controlled cutting machine for oil cylinder processing. When the device processes the oil cylinder, the oil cylinder processing part will be arranged on a supporting grid, and the position of the laser cutting head will be controlled by adjusting the movement of the track for processing. During this process, the device only needs to design a waterproof water pump, which cooperates with the corresponding infrared sensor and the electric control valve to prevent the workpiece being processed from being washed by water, and the workpiece after processing can be cooled in time. At the same time, the drawn water can be quickly cooled by the spiral water pipe and the semiconductor refrigeration plate to achieve rapid cooling. The emergency cooling cold water can also improve the heat dissipation efficiency of the heat dissipation copper plate. In addition, during the cooling process, the dust can be collected by the dust shielding inclined plate. The whole process is efficient, and the safety and stability are increased. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a side view axial schematic diagram of the present invention;

[0023] Figure 2 This is a schematic diagram of the present invention when viewed from the bottom;

[0024] Figure 3 It is a left side cross-sectional schematic diagram of the present invention;

[0025] Figure 4 It is a right side cross-sectional schematic diagram of the present invention;

[0026] Figure 5 This is a schematic diagram of the cooling mechanism of the present invention from the axial side;

[0027] Figure 6 It is a top cross-sectional schematic diagram of the refrigeration mechanism of the present invention;

[0028] Figure 7 It is a side cross-sectional schematic diagram of the refrigeration mechanism of the present invention;

[0029] Figure 8 It is a side cross-sectional schematic diagram of the filtering mechanism of the present invention;

[0030] Fig. 9 It is a schematic diagram of the oblique axial section of the hollow slab of the present invention.

[0031] Among them, 1. machine tool body; 2. cooling mechanism; 3. support legs; 4. infrared sensor group; 5. support grid; 6. laser cutting head; 7. adjustment track; 8. CNC controller; 201. refrigeration mechanism; 202. No. 1 water pipe; 203. No. 2 water pipe; 204. filtering mechanism; 205. No. 3 water pipe; 206. No. 4 water pipe; 207. No. 5 water pipe; 208. C-type water pipe; 209. cooling nozzle; 2010. elbow group; 2011. waterproof water pump; 2012. support block ; 20101, refrigeration shell; 20102, No. 1 sealing plate; 20103, hollow plate; 20104, middle baffle; 20105, drainage cavity; 20106, heat dissipation copper sheet; 20107, semiconductor refrigeration sheet; 20108, gallium indium tin alloy solution; 20109, refrigeration cavity; 201010, spiral water pipe; 201011, No. 2 sealing plate; 20401, filter shell; 20402, filter inner shell; 20403, dust shield inclined plate; 20404, dust net. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] Example:

[0034] like Figure 1-9 As shown, the embodiment of the present invention provides a safety protection device for a CNC cutting machine for oil cylinder processing, comprising a machine tool body 1 and a cooling mechanism 2, both sides of the machine tool body 1 are embedded with an infrared sensor group 4, the cooling mechanism 2 comprises a support block 2012, a refrigeration mechanism 201 and a filtering mechanism 204, a waterproof water pump 2011 is fixedly provided at the upper end of the support block 2012, a No. 5 water pipe 207 is fixedly provided at the output end of the waterproof water pump 2011, the upper end of the No. 5 water pipe 207 is fixedly connected with a C-type water pipe 208, both sides of the upper end of the C-type water pipe 208 are fixedly connected with a bend group 2010, and the upper ends of the two bend groups 2010 are fixedly provided with a cooling nozzle 209;

[0035] The refrigeration mechanism 201 includes a refrigeration shell 20101, a middle baffle 20104 is longitudinally fixedly arranged at the center of the interior of the refrigeration shell 20101, a No. 1 sealing plate 20102 is fixedly arranged at the center of both sides of the middle baffle 20104, a semiconductor refrigeration plate 20107 is embedded in the center of the front side of the two No. 1 sealing plates 20102, and the refrigeration temperature of the semiconductor refrigeration plate 20107 is set to -19°C, and a No. 2 sealing plate 201011 is fixedly arranged at both sides of the rear end of the middle baffle 20104, and a refrigeration cavity 20109 is formed between the No. 2 sealing plate 201011, the middle baffle 20104, the No. 1 sealing plate 20102 and the refrigeration shell 20101, and a gallium-indium-tin alloy solution 20108 is arranged inside the refrigeration cavity 20109;

[0036] The rear centers of the two No. 2 sealing plates 201011 are penetrated with spiral water pipes 201010, and the spiral water pipes 201010 and the No. 1 sealing plate 20102 are both made of copper material. A drainage cavity 20105 is opened at the rear center of the middle baffle 20104. The front ends of the two spiral water pipes 201010 penetrate the middle baffle 20104 to the interior of the drainage cavity 20105 and are connected with the No. 3 water pipe 205. Hollow plates 20103 are fixedly arranged on both sides of the front end of the middle baffle 20104, and a plurality of heat dissipation copper sheets 20106 are penetrated at the front ends of the two hollow plates 20103.

[0037] The filtering mechanism 204 includes a filtering outer shell 20401, the front end of which is movablely sleeved with a filtering inner shell 20402, the inner bottom surface and the inner top surface of the filtering inner shell 20402 are fixedly provided with a plurality of dust-blocking inclined plates 20403, a No. 2 water pipe 203 is provided between the filtering inner shell 20402 and the input end of the waterproof water pump 2011, and a dust-proof net 20404 is fixedly provided at the front end inside the filtering inner shell 20402.

[0038] A numerical control controller 8 is disposed on one side of the machine tool body 1 , and support legs 3 are fixedly disposed at the four corners of the lower end surface of the machine tool body 1 .

[0039] A support grid 5 is fixedly provided at the upper end of the machine tool body 1 , a lower end of the support block 2012 is fixedly provided on the inner bottom surface of the machine tool body 1 , and a waterproof water pump 2011 is located inside the machine tool body 1 .

[0040] An adjustment rail 7 is arranged at the upper end of the machine tool body 1 , and a laser cutting head 6 is arranged on the adjustment rail 7 .

[0041] The upper end of the bend group 2010 passes through the supporting grid 5 and is fixedly connected to the supporting grid 5. The cooling nozzle 209 is located at the upper end of the supporting grid 5. Each bend of the bend group 2010 is provided with an electric control valve.

[0042] The upper end of the No. 3 water pipe 205 passes through the middle baffle 20104 and the refrigeration shell 20101 and is connected to the rear end of the filter shell 20401, and the middle baffle 20104 and the hollow plate 20103 are arranged in a through manner.

[0043] The rear ends of the plurality of heat dissipating copper plates 20106 are arranged in contact with the front heating ends of the semiconductor refrigeration plates 20107. The middle part of the tube body of the No. 5 water pipe 207 is connected to the No. 4 water pipe 206. The front end of the No. 4 water pipe 206 is fixedly connected to the No. 1 water pipe 202. Both ends of the No. 1 water pipe 202 penetrate the refrigeration shell 20101 and are respectively connected to the hollow plate 20103.

[0044] The front ends of the refrigeration housing 20101 and the filter housing 20401 are arranged through the front end of the machine tool body 1 , and a part of the second water pipe 203 is located at the front end of the machine tool body 1 .

[0045] Efficient cooling: The safety protection device for the CNC cutting machine of the present invention uses a combination of semiconductor cooling sheet 20107 and gallium indium tin alloy solution 20108, which can quickly and effectively reduce the high temperature generated during the cutting process. This multiple cooling mechanism makes the cooling process more efficient and avoids the problem of poor cooling effect of traditional air cooling and water cooling methods.

[0046] Automatic control: The combination of infrared sensor group and electric control valve realizes automatic control of the cooling system. When the cutting head moves to the corresponding position, the system can automatically open or close the cooling device to ensure the timeliness and accuracy of the cooling process, and improve the convenience and safety of operation.

[0047] Improve processing accuracy: The efficient cooling system can effectively prevent material deformation caused by high temperature, thereby ensuring the accuracy of the processing process and the quality of the finished product. This is especially important for cylinder parts that require fine processing, and can significantly improve the reliability and life of the product.

[0048] Improved safety: The device is equipped with a waterproof water pump and a filter mechanism during the cooling process, which can effectively filter the dust and impurities generated during the cutting process, reduce the risk of fire, and protect the safety of operators. In addition, the system's multiple protection design further enhances the safety of equipment operation.

[0049] Easy maintenance: The refrigeration shell 20101 and the filter shell 20401 are designed to be embedded, which is easy to disassemble and maintain. The filter inner shell 20402 can be easily pulled out, which greatly facilitates daily cleaning and maintenance work and reduces the maintenance cost and downtime of the equipment.

[0050] Environmentally friendly: The design of the cooling system allows water resources to be recycled, reducing water waste and meeting the requirements of green environmental protection. At the same time, the use of semiconductor cooling film 20107 avoids the pollution of the environment by traditional refrigerants.

[0051] Strong adaptability: The device is suitable for processing various metal and non-metal materials and has a wide range of applications. Whether it is a large cylinder or a small component, it can effectively cool and protect it, with strong adaptability and high flexibility.

[0052] To sum up, the safety protection device of the CNC cutting machine for cylinder processing provided by the present invention has the advantages of efficient cooling, automatic control, improved processing accuracy, improved safety, easy maintenance, environmental friendliness and strong adaptability. It can significantly improve the efficiency and safety of cylinder processing and has broad application prospects.

[0053] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A safety protection device for a CNC cutting machine for oil cylinder machining, comprising a machine tool body (1) and a cooling mechanism (2), characterized in that: Infrared sensor groups (4) are embedded on both sides of the machine tool body (1); the cooling mechanism (2) comprises a support block (2012), a refrigeration mechanism (201) and a filtering mechanism (204); a waterproof water pump (2011) is fixedly provided on the upper end of the support block (2012); a No. 5 water pipe (207) is fixedly provided on the output end of the waterproof water pump (2011); a C-shaped water pipe (208) is fixedly connected to the upper end of the No. 5 water pipe (207); both sides of the upper end of the C-shaped water pipe (208) are fixedly connected to a bent pipe group (2010); and a cooling nozzle (209) is fixedly provided on the upper ends of the two bent pipe groups (2010); The refrigeration mechanism (201) comprises a refrigeration shell (20101), a middle baffle (20104) is longitudinally fixedly arranged at the center of the interior of the refrigeration shell (20101), a No. 1 sealing plate (20102) is fixedly arranged at the centers of both sides of the middle baffle (20104), a semiconductor refrigeration plate (20107) is embedded at the centers of the front sides of the two No. 1 sealing plates (20102), the refrigeration temperature of the semiconductor refrigeration plate (20107) is set to -19°C, a No. 2 sealing plate (201011) is fixedly arranged at both sides of the rear end of the middle baffle (20104), a refrigeration cavity (20109) is formed between the No. 2 sealing plate (201011), the middle baffle (20104), the No. 1 sealing plate (20102) and the refrigeration shell (20101), and a gallium-indium-tin alloy solution (20108) is arranged inside the refrigeration cavity (20109); A spiral water pipe (201010) is provided through the center of the rear side of the two No. 2 sealing plates (201011); the spiral water pipe (201010) and the No. 1 sealing plate (20102) are both made of copper material; a drainage cavity (2105) is provided at the center of the rear side of the middle baffle (20104); the front ends of the two spiral water pipes (201010) penetrate the middle baffle (2104) and pass to the interior of the drainage cavity (2105) and are connected to a No. 3 water pipe (205); hollow plates (2103) are fixedly provided on both sides of the front end of the middle baffle (20104); and a plurality of heat dissipation copper sheets (20106) are provided through the front ends of the two hollow plates (20103); The filtering mechanism (204) comprises a filtering outer shell (20401), the front end of which is movably sleeved with a filtering inner shell (20402), the inner bottom surface and inner surface of the filtering inner shell (20402) being A plurality of dust-blocking inclined plates (20403) are fixedly arranged on the top surface, a second water pipe (203) is arranged between the filter inner shell (20402) and the input end of the waterproof water pump (2011), and a dust-proof net (20404) is fixedly arranged inside the filter inner shell (20402) near the front end; The rear ends of the plurality of heat dissipation copper sheets (20106) are arranged in contact with the front heating end of the semiconductor refrigeration sheet (20107); the middle of the tube body of the No. 5 water pipe (207) is connected to the No. 4 water pipe (206); the front end of the No. 4 water pipe (206) is fixedly connected to the No. 1 water pipe (202); both ends of the No. 1 water pipe (202) pass through the refrigeration shell (20101) and are respectively connected to the hollow plate (20103).

2. A safety protection device for a CNC cutting machine for oil cylinder machining according to claim 1, characterized in that: A numerical control controller (8) is provided on one side of the machine tool body (1), and support legs (3) are fixedly provided at the four corners of the lower end surface of the machine tool body (1).

3. The safety protection device for a CNC cutting machine for oil cylinder machining according to claim 1 is characterized in that: A supporting grid (5) is fixedly arranged at the upper end of the machine tool body (1), the lower end of the supporting block (2012) is fixedly arranged on the inner bottom surface of the machine tool body (1), and the waterproof water pump (2011) is located inside the machine tool body (1).

4. The safety protection device for a CNC cutting machine for oil cylinder machining according to claim 1 is characterized in that: An adjustment track (7) is provided at the upper end of the machine tool body (1), and a laser cutting head (6) is provided on the adjustment track (7).

5. The safety protection device for a CNC cutting machine for oil cylinder machining according to claim 1 is characterized in that: The upper end of the curved pipe group (2010) passes through the supporting grid (5) and is fixedly connected to the supporting grid (5); the cooling nozzle (209) is located at the upper end of the supporting grid (5); and each curved pipe of the curved pipe group (2010) is provided with an electric control valve.

6. The safety protection device for a CNC cutting machine for oil cylinder machining according to claim 1 is characterized in that: The upper end of the No. 3 water pipe (205) passes through the middle baffle (20104) and the refrigeration shell (20101) is connected to the rear end of the filter housing (20401), and the middle baffle (20104) and the hollow plate (20103) are arranged in a continuous manner.

7. The safety protection device for a CNC cutting machine for oil cylinder machining according to claim 1 is characterized in that: The front ends of the refrigeration housing (20101) and the filter housing (20401) are arranged through the front end of the machine tool body (1), and a portion of the second water pipe (203) is located at the front end of the machine tool body (1).