CN110369800B - A cutting machine with good heat dissipation effect for hardware processing - Google Patents

Abstract

The invention relates to a cutting machine with good heat dissipation effect for hardware processing, which comprises a bottom box, a cutting blade, a rotating pipe, two bearings and two connecting boxes, wherein the shape of the connecting boxes and the shape of the bottom box are both rectangular solids, the cutting blade is arranged on the rotating pipe, the rotating pipe is positioned between the two connecting boxes, one side of the connecting box, which is close to the cutting blade, is provided with a mounting hole, the rotating pipe penetrates through the mounting hole, the rotating pipe is in sliding and sealing connection with the mounting hole, the bearings are in one-to-one correspondence with the connecting boxes, the bearings are positioned between the connecting boxes and the cutting blade, the bottom box is internally provided with an auxiliary mechanism, and the two connecting boxes are internally provided with heat dissipation mechanisms respectively, so that the cutting machine with good heat dissipation effect for hardware processing realizes the function of eliminating sparks generated during cutting through the auxiliary mechanism, avoids scalding accidents, improves the safety, and not only, still promote cutting piece and rotating-tube radiating effect through heat dissipation mechanism.

Description

A cutting machine with good heat dissipation effect for hardware processing

technical field

The invention relates to the field of cutting machines, in particular to a cutting machine with good heat dissipation effect for metal processing.

Background technique

Grinding wheel cutting machine, also known as grinding wheel saw, grinding wheel cutting machine is suitable for construction, hardware, petrochemical, mechanical metallurgy and water and electricity installation and other departments. Common equipment for cutting carbon steel, tube and other materials.

During the use of the existing grinding wheel cutting machine, the grinding wheel will generate a lot of heat, and after the heat is transferred to the main shaft, it will cause the bearing and the main shaft to bite, damage the shaft or bearing, and reduce the service life. Not only that, during the cutting process, A large number of sparks will be produced, scalding accidents are prone to occur, and safety is reduced.

SUMMARY OF THE INVENTION

The technical problem to be solved by the present invention is: in order to overcome the deficiencies of the prior art, a cutting machine with good heat dissipation effect for hardware processing is provided.

The technical solution adopted by the present invention to solve the technical problem is: a cutting machine with good heat dissipation effect for hardware processing, comprising a bottom box, a cutting blade, a rotating tube, two bearings and two connecting boxes, the connecting boxes The shape of the box and the shape of the bottom box are both cuboid, the cutting piece is installed on the rotating tube, the rotating tube is located between the two connecting boxes, and the side of the connecting box close to the cutting piece is provided with a mounting hole, so The rotating pipe passes through the mounting hole, the rotating pipe is slidably and sealedly connected to the mounting hole, the bearing corresponds to the connecting box one-to-one, the bearing is located between the connecting box and the cutting blade, and the inner ring of the bearing is mounted on the connecting box. On the rotating tube, the outer ring of the bearing is fixedly connected with the connecting box, the bottom of the connecting box is fixed on the top of the bottom box, one of the connecting boxes is provided with a driving device, and the driving device is drivingly connected with the rotating tube, so the The bottom box is provided with an auxiliary mechanism, and the two connection boxes are provided with a heat dissipation mechanism;

The auxiliary mechanism includes two air extraction assemblies and at least two connecting pipes. The air extraction assemblies correspond to the connection boxes one-to-one. The top of the bottom box is provided with at least two through holes, and the through holes are located in two Between the connection boxes, the axis of the through hole is perpendicular to the axis of the rotating pipe, the through holes are arranged in a matrix, the connecting pipes correspond to the through holes one by one, and the outer diameter of the connecting pipe is equal to the diameter of the through holes , the connecting pipe passes through the through hole, the connecting pipe is sealed and fixedly connected with the inner wall of the through hole, the bottom box is provided with cooling water, and the end of the connecting pipe close to the rotating pipe is in a position with the top of the bottom box On the same plane, the other end of the connecting pipe is located in the cooling water;

The air extraction assembly includes an air extraction pipe, an air extraction pump, a first connection hole and a second connection hole, the first connection hole is arranged at the bottom of the connection box, the second connection hole is arranged at the top of the bottom box, and the The axis of the first connection hole is parallel to the axis of the through hole, the first connection hole and the second connection hole are coaxially arranged, and the diameter of the first connection hole, the diameter of the second connection hole and the outer diameter of the air extraction pipe are all the same. Equally, the air extraction pipe is coaxially arranged with the second connection hole, the air extraction pipe passes through the first connection hole and the second connection hole in turn, the air extraction pipe is sealed and fixedly connected with the inner wall of the first connection hole, the air extraction pipe is The air suction pipe is sealed and fixedly connected with the inner wall of the second connection hole, the air suction pipe is located between the cooling water and the rotating pipe, the air suction pump is fixed on the bottom of the connection box, and the air suction pump is arranged on the air suction pipe;

The heat dissipation mechanism includes a push assembly, a sealing ring and at least two exhaust holes, the exhaust holes are evenly distributed on the rotating pipe in the circumferential direction with the axis of the rotating pipe as the center, and the axis of the exhaust hole is related to the axis of the rotating pipe. The axes are vertical and intersecting, the sealing ring is arranged inside the rotating tube, the sealing ring is arranged coaxially with the rotating tube, the outer diameter of the sealing ring is equal to the inner diameter of the rotating tube, and the sealing ring is directly connected to the exhaust hole. For installation, the sealing ring is slidingly and sealingly connected with the inner wall of the rotating pipe, the length of the sealing ring is greater than the diameter of the exhaust hole, the pushing assembly is located in the connection box, and the pushing assembly drives the sealing ring along the rotating pipe axial movement.

Preferably, in order to drive the seal ring to move, the push assembly includes an electromagnet, a push rod, a support block, a fixed block and a spring, the push rod is coaxial with the rotating tube, and the diameter of the push rod is smaller than the inner diameter of the seal ring , one end of the push rod is fixedly connected with the sealing ring, the fixed block is fixed on the other end of the push rod, the support block is located between the fixed block and the rotating tube, the support block is provided with a through hole, the The push rod passes through the through hole, the push rod is slidably connected to the inner wall of the through hole, the spring is located between the support block and the fixed block, the support block is connected to the fixed block through the spring, and the electromagnet is located at the end of the fixed block. On the side away from the push rod, the electromagnet and the fixing block are arranged facing each other, the electromagnet is fixed on the inner wall of the connection box, there is a gap between the electromagnet and the fixing block, and the material for making the fixing block is for iron.

Preferably, in order to reduce the frictional force between the push rod and the support block, the inner wall of the through hole is coated with lubricating oil.

Preferably, in order to achieve the effects of buffering and vibration reduction, the fixing block is provided with a rubber block, and the rubber block is laid on the side of the fixing block close to the electromagnet.

Preferably, in order to improve the tightness between the rotating pipe and the sealing ring, the inner wall of the rotating pipe is coated with sealing grease.

Preferably, in order to drive the rotating tube to rotate, the drive device includes a drive motor, a drive gear and a driven gear, the drive motor is fixed on the inner wall of the connection box, the drive motor is connected to the drive gear in a transmission, and the driven gear A gear is mounted on the rotating tube, and the drive gear meshes with the driven gear.

Preferably, in order to improve the driving force of the driving motor, the driving motor is a servo motor.

Preferably, in order to improve the heat dissipation effect, two refrigeration rods are provided at the bottom of the bottom box, and the refrigeration rods are in one-to-one correspondence with the air extraction pipes.

Preferably, in order to prolong the service life of the rotating pipe, the rotating pipe is provided with an anti-corrosion galvanized layer.

Preferably, in order to facilitate the installation of the sealing ring, the sealing ring is provided with a chamfer.

The beneficial effect of the present invention is that the cutting machine with good heat dissipation effect for hardware processing realizes the function of eliminating sparks during cutting through the auxiliary mechanism, avoids scalding accidents, and improves safety. Compared with the existing auxiliary mechanism , the auxiliary mechanism also plays the function of collecting the debris generated by cutting, which is more cost-effective. Not only that, but also improves the heat dissipation effect of the cutting blade and the rotating tube through the heat dissipation mechanism. Compared with the existing heat dissipation mechanism, the heat dissipation mechanism The structure is simple, the design is ingenious, and the practicability is stronger.

Description of drawings

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

Fig. 1 is the structural representation of the cutting machine with good heat dissipation effect for metal processing of the present invention;

Fig. 2 is the sectional view of the cutting machine with good heat dissipation effect for metal processing of the present invention;

Fig. 3 is the enlarged view of A part of Fig. 2;

Fig. 4 is the enlarged view of B part of Fig. 2;

In the picture: 1. Bottom box, 2. Cutting plate, 3. Rotating tube, 4. Bearing, 5. Connecting box, 6. Connecting tube, 7. Air suction pipe, 8. Air suction pump, 9. Seal ring, 10. Electromagnetic Iron, 11. Push rod, 12. Support block, 13. Fixed block, 14. Spring, 15. Rubber block, 16. Drive motor, 17. Drive gear, 18. Driven gear, 19. Refrigeration rod.

Detailed ways

The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are all simplified schematic diagrams, and only illustrate the basic structure of the present invention in a schematic manner, so they only show the structures related to the present invention.

As shown in Figure 1, a cutting machine with good heat dissipation effect for hardware processing includes a bottom box 1, a cutting blade 2, a rotating tube 3, two bearings 4 and two connecting boxes 5. The shape and the shape of the bottom box 1 are both cuboid, the cutting piece 2 is installed on the rotating tube 3, and the rotating tube 3 is located between the two connecting boxes 5, and the side of the connecting box 5 close to the cutting piece 2 There is a mounting hole, the rotating pipe 3 passes through the mounting hole, the rotating pipe 3 is slidably and sealedly connected with the mounting hole, the bearing 4 corresponds to the connecting box 5 one by one, and the bearing 4 is located between the connecting box 5 and the cutting Between the plates 2, the inner ring of the bearing 4 is installed on the rotating tube 3, the outer ring of the bearing 4 is fixedly connected with the connection box 5, the bottom of the connection box 5 is fixed on the top of the bottom box 1, one of the A drive device is provided in the connection box 5, and the drive device is connected with the rotating pipe 3 in a driving manner, an auxiliary mechanism is arranged in the bottom box 1, and a heat dissipation mechanism is arranged in both the connection boxes 5;

The rotating tube 3 is rotated under the support of the bearing 4 through the driving device, the rotation of the rotating tube 3 drives the cutting blade 2 to rotate, and the cutting function is realized by the rotation of the cutting blade 2. Here, the role of the auxiliary mechanism is to improve safety, The function of setting the heat dissipation mechanism is to improve the heat dissipation effect.

As shown in FIGS. 2-3 , the auxiliary mechanism includes two air extraction assemblies and at least two connection pipes 6 , the air extraction assemblies are in one-to-one correspondence with the connection boxes 5 , and the top of the bottom case 1 is provided with at least two There are through holes, the through holes are located between the two connection boxes 5, the axis of the through holes is perpendicular to the axis of the rotating pipe 3, the through holes are arranged in a matrix, and the connecting pipes 6 correspond to the through holes one-to-one , the outer diameter of the connecting pipe 6 is equal to the diameter of the through hole, the connecting pipe 6 passes through the through hole, the connecting pipe 6 is sealed and fixedly connected with the inner wall of the through hole, and the bottom box 1 is provided with a cooling water, one end of the connecting pipe 6 close to the rotating pipe 3 is in the same plane as the top of the bottom box 1, and the other end of the connecting pipe 6 is located in the cooling water;

The air extraction assembly includes an air extraction pipe 7, an air extraction pump 8, a first connection hole and a second connection hole. The first connection hole is provided at the bottom of the connection box 5, and the second connection hole is provided at the bottom of the bottom box 1. At the top, the axis of the first connection hole is parallel to the axis of the through hole, the first connection hole and the second connection hole are coaxially arranged, the diameter of the first connection hole, the diameter of the second connection hole and the air extraction pipe The outer diameters of the 7 are equal, the air suction pipe 7 is coaxially arranged with the second connection hole, the air suction pipe 7 passes through the first connection hole and the second connection hole in turn, and the air suction pipe 7 is connected to the first connection hole. The inner wall is sealed and fixedly connected, the suction pipe 7 is sealed and fixedly connected to the inner wall of the second connection hole, the suction pipe 7 is located between the cooling water and the rotating pipe 3, and the suction pump 8 is fixed in the connection box 5. At the bottom, the air suction pump 8 is arranged on the air suction pipe 7;

The heat dissipation mechanism includes a push assembly, a sealing ring 9 and at least two exhaust holes. The exhaust holes are evenly distributed on the rotating pipe 3 in the circumferential direction with the axis of the rotating pipe 3 as the center. The axis of the rotating pipe 3 is vertical and intersecting, the sealing ring 9 is arranged inside the rotating pipe 3 , the sealing ring 9 is arranged coaxially with the rotating pipe 3 , and the outer diameter of the sealing ring 9 is equal to the inner diameter of the rotating pipe 3 , the sealing ring 9 is arranged opposite to the exhaust hole, the sealing ring 9 is slidably and sealedly connected with the inner wall of the rotating pipe 3, the length of the sealing ring 9 is greater than the aperture of the exhaust hole, and the push assembly is located in the connection Inside the box 5 , the push assembly drives the sealing ring 9 to move along the axial direction of the rotating tube 3 .

During the cutting process, through the operation of the air suction pump 8, the air suction pipe 7 extracts the air in the bottom box 1, thereby reducing the air pressure in the bottom box 1. Under the action of the air pressure, the connecting pipe 6 extracts the air above the bottom box 1 into The cooling water, so that the sparks generated during the cutting process can be sucked into the cooling water through the airflow, because the sparks are actually the debris generated by the cutting in a high temperature state, so the function of collecting the debris generated by the cutting is also realized. Push the assembly to move the sealing ring 9 toward the connection box 5, so that the inside of the rotating pipe 3 communicates with the outside of the rotating pipe 3 through the exhaust hole. Pipe 3, the air in the rotating pipe 3 is discharged from the exhaust pipe, and through the airflow discharged from the exhaust hole, on the one hand, the heat dissipation on the cutting blade 2 and the rotating pipe 3 can be accelerated, and the heat dissipation effect can be improved; The sparks are blown into the connecting pipe 6 to improve the reliability of collecting sparks.

As shown in FIG. 4 , the push assembly includes an electromagnet 10 , a push rod 11 , a support block 12 , a fixed block 13 and a spring 14 . The push rod 11 and the rotating tube 3 are coaxially arranged. The diameter of the push rod 11 is smaller than the inner diameter of the seal ring 9 , one end of the push rod 11 is fixedly connected to the seal ring 9 , the fixed block 13 is fixed on the other end of the push rod 11 , and the support block 12 is located between the fixed block 13 and the rotating tube 3 , the support block 12 is provided with a through hole, the push rod 11 passes through the through hole, the push rod 11 is slidably connected with the inner wall of the through hole, the spring 14 is located between the support block 12 and the fixed block 13, The support block 12 is connected to the fixed block 13 through a spring 14. The electromagnet 10 is located on the side of the fixed block 13 away from the push rod 11. It is fixed on the inner wall of the connection box 5, and there is a gap between the electromagnet 10 and the fixing block 13, and the material of the fixing block 13 is iron.

During the cutting process, the electromagnet 10 is energized, so that a mutual attraction force is generated between the electromagnet 10 and the iron fixed block 13, so that the fixed block 13 drives the push rod 11 to approach the electromagnet under the support of the support block 12. 10 and compress the spring 14. The movement of the push rod 11 drives the sealing ring 9 to move towards the direction close to the connection box 5. When the cutting is completed, the electromagnet 10 is powered off, and the push rod 11 drives the seal under the elastic action of the spring 14. The ring 9 is reset, so that the sealing ring 9 blocks the exhaust hole to prevent dust from entering the rotating pipe 3 .

Preferably, in order to reduce the frictional force between the push rod 11 and the support block 12, the inner wall of the through hole is coated with lubricating oil.

The function of the lubricating oil is to reduce the frictional force between the push rod 11 and the support block 12 and improve the smoothness of the movement of the push rod 11 .

Preferably, in order to achieve the effects of buffering and vibration reduction, the fixing block 13 is provided with a rubber block 15 , and the rubber block 15 is laid on the side of the fixing block 13 close to the electromagnet 10 .

The rubber texture is relatively soft, which can reduce the impact force generated when the electromagnet 10 abuts against the fixing block 13 during the electrification of the electromagnet 10 , and has the effect of buffering and damping.

Preferably, in order to improve the sealing performance between the rotating pipe 3 and the sealing ring 9, the inner wall of the rotating pipe 3 is coated with sealing grease.

The function of the sealing grease is to reduce the gap between the rotating tube 3 and the sealing ring 9 and improve the sealing performance.

Preferably, in order to drive the rotating tube 3 to rotate, the driving device includes a driving motor 16, a driving gear 17 and a driven gear 18, the driving motor 16 is fixed on the inner wall of the connection box 5, and the driving motor 16 and the driving gear 17 is a transmission connection, the driven gear 18 is mounted on the rotating tube 3 , and the driving gear 17 meshes with the driven gear 18 .

The driving motor 16 operates, so that the driving motor 16 drives the driving gear 17 to rotate, and the rotation of the driving gear 17 drives the rotating pipe 3 to rotate through the driven gear 18, thus realizing the function of driving the rotating pipe 3 to rotate.

Preferably, in order to improve the driving force of the driving motor 16, the driving motor 16 is a servo motor.

The servo motor has the characteristics of strong overload capacity, so that the driving force of the driving motor 16 can be improved.

Preferably, in order to improve the heat dissipation effect, two refrigeration rods 19 are provided at the bottom of the bottom box 1 , and the refrigeration rods 19 are in one-to-one correspondence with the air extraction pipes 7 .

During the cutting process, the cooling rod 19 operates, so that the temperature of the cooling water can be lowered, that is, the temperature of the gas discharged from the exhaust hole is lowered, and the heat dissipation effect is improved.

Preferably, in order to prolong the service life of the rotating pipe 3, the rotating pipe 3 is provided with an anti-corrosion galvanized layer.

The function of the anti-corrosion galvanized layer is to improve the anti-rust ability of the rotating pipe 3 and prolong the service life of the rotating pipe 3 .

Preferably, in order to facilitate the installation of the sealing ring 9, the sealing ring 9 is provided with a chamfer.

The function of the chamfer is to reduce the diameter of the sealing ring 9 when it is installed into the rotating tube 3 , which has the effect of facilitating the installation of the sealing ring 9 .

During the cutting process of the cutting machine, the air is sucked into the cooling water through the connecting pipe 6, so that the sparks generated during the cutting process can be sucked into the cooling water through the airflow. At the same time, the air drawn into the bottom box 1 by the connecting pipe 6 passes through the exhaust pipe 7, the connecting box 5 and the connecting pipe 6 in turn, and then is discharged from the exhaust pipe, and is discharged through the exhaust hole. On the one hand, the heat dissipation on the cutting blade 2 and the rotating tube 3 can be accelerated, and the heat dissipation effect can be improved;

Compared with the prior art, the cutting machine with good heat dissipation effect for hardware processing realizes the function of eliminating sparks during cutting through the auxiliary mechanism, avoiding the occurrence of scalding accidents, and improving the safety. Compared with the existing auxiliary mechanism , the auxiliary mechanism also plays the function of collecting the debris generated by cutting, which is more cost-effective. Not only that, but also improves the heat dissipation effect of the cutting blade 2 and the rotating tube 3 through the heat dissipation mechanism. Compared with the existing heat dissipation mechanism, the The heat dissipation mechanism is simple in structure, ingenious in design and more practical.

Taking the above ideal embodiments according to the present invention as inspiration, and through the above description, relevant personnel can make various changes and modifications without departing from the technical idea of the present invention. The technical scope of the present invention is not limited to the contents in the specification, and the technical scope must be determined according to the scope of the claims.

Claims (10)

1. The utility model provides a cutting machine tool that radiating effect is good for hardware processing, includes bottom case (1), cutting piece (2), rotating tube (3), two bearings (4) and two connecting boxes (5), the shape of connecting box (5) and the shape of bottom case (1) are the cuboid, cutting piece (2) are installed on rotating tube (3), rotating tube (3) are located between two connecting boxes (5), one side that is close to cutting piece (2) of connecting box (5) is equipped with the mounting hole, rotating tube (3) pass the mounting hole, rotating tube (3) and mounting hole slip and sealing connection, bearing (4) and connecting box (5) one-to-one, bearing (4) are located between connecting box (5) and cutting piece (2), the inner circle of bearing (4) is installed on rotating tube (3), the outer lane and the connecting box (5) fixed connection of bearing (4), the bottom of each connecting box (5) is fixed to the top of each bottom box (1), a driving device is arranged in one connecting box (5) and is in transmission connection with the rotating pipe (3), and the bottom box is characterized in that an auxiliary mechanism is arranged in each bottom box (1), and heat dissipation mechanisms are arranged in the two connecting boxes (5);

the auxiliary mechanism comprises two air exhaust assemblies and at least two connecting pipes (6), the air exhaust assemblies correspond to the connecting boxes (5) one by one, at least two through holes are formed in the top of the bottom box (1), the through holes are located between the two connecting boxes (5), the axes of the through holes are perpendicular to the axes of the rotating pipes (3), the through holes are arranged in a matrix mode, the connecting pipes (6) correspond to the through holes one by one, the outer diameters of the connecting pipes (6) are equal to the aperture of the through holes, the connecting pipes (6) penetrate through the through holes, the connecting pipes (6) are hermetically and fixedly connected with the inner walls of the through holes, cooling water is arranged in the bottom box (1), one ends, close to the rotating pipes (3), of the connecting pipes (6) and the top of the bottom box (1) are located on the same plane, and the other ends of the connecting pipes (6;

the air extraction component comprises an air extraction pipe (7), an air extraction pump (8), a first connecting hole and a second connecting hole, the first connecting hole is arranged at the bottom of the connecting box (5), the second connecting hole is arranged at the top of the bottom box (1), the axis of the first connecting hole is parallel to the axis of the through hole, the first connecting hole and the second connecting hole are coaxially arranged, the aperture of the first connecting hole, the aperture of the second connecting hole and the outer diameter of the air extraction pipe (7) are equal, the air extraction pipe (7) and the second connecting hole are coaxially arranged, the air extraction pipe (7) sequentially penetrates through the first connecting hole and the second connecting hole, the air extraction pipe (7) is hermetically and fixedly connected with the inner wall of the first connecting hole, the air extraction pipe (7) is hermetically and fixedly connected with the inner wall of the second connecting hole, and the air extraction pipe (7) is positioned between the cooling water and the rotating pipe (3), the air pump (8) is fixed at the bottom in the connecting box (5), and the air pump (8) is arranged on the air extraction pipe (7);

the heat dissipation mechanism comprises a pushing assembly, a sealing ring (9) and at least two exhaust holes, the exhaust holes are circumferentially and uniformly distributed on the rotating pipe (3) by taking the axis of the rotating pipe (3) as the center, the axis of the exhaust hole is vertical to and intersected with the axis of the rotating pipe (3), the sealing ring (9) is arranged in the rotating pipe (3), the sealing ring (9) and the rotating pipe (3) are coaxially arranged, the outer diameter of the sealing ring (9) is equal to the inner diameter of the rotating pipe (3), the sealing ring (9) is arranged opposite to the exhaust hole, the sealing ring (9) is connected with the inner wall of the rotating pipe (3) in a sliding and sealing way, the length of the sealing ring (9) is larger than the aperture of the exhaust hole, the pushing component is positioned in the connecting box (5), the pushing assembly drives the sealing ring (9) to move along the axial direction of the rotating pipe (3).

2. The cutting machine with good heat dissipation effect for hardware processing as claimed in claim 1, wherein the pushing assembly comprises an electromagnet (10), a push rod (11), a supporting block (12), a fixed block (13) and a spring (14), the push rod (11) and the rotating tube (3) are coaxially arranged, the diameter of the push rod (11) is smaller than the inner diameter of the sealing ring (9), one end of the push rod (11) is fixedly connected with the sealing ring (9), the fixed block (13) is fixed at the other end of the push rod (11), the supporting block (12) is located between the fixed block (13) and the rotating tube (3), a through hole is formed in the supporting block (12), the push rod (11) penetrates through the through hole, the push rod (11) is slidably connected with the inner wall of the through hole, and the spring (14) is located between the supporting block (12) and the fixed block (13), the supporting block (12) is connected with the fixing block (13) through a spring (14), the electromagnet (10) is located on one side, far away from the push rod (11), of the fixing block (13), the electromagnet (10) is arranged opposite to the fixing block (13), the electromagnet (10) is fixed on the inner wall of the connecting box (5), a gap is formed between the electromagnet (10) and the fixing block (13), and the fixing block (13) is made of iron.

3. The cutting machine with good heat dissipation effect for hardware processing as claimed in claim 2, wherein the inner wall of the through hole is coated with lubricating oil.

4. The cutting machine with the good heat dissipation effect for hardware processing as claimed in claim 2, characterized in that a rubber block (15) is arranged on the fixing block (13), and the rubber block (15) is laid on one side, close to the electromagnet (10), of the fixing block (13).

5. The cutting machine with good heat dissipation effect for hardware processing as claimed in claim 1, characterized in that the inner wall of the rotating tube (3) is coated with sealing grease.

6. The cutting machine with the good heat dissipation effect for hardware processing as claimed in claim 1, wherein the driving device comprises a driving motor (16), a driving gear (17) and a driven gear (18), the driving motor (16) is fixed on the inner wall of the connecting box (5), the driving motor (16) is in transmission connection with the driving gear (17), the driven gear (18) is installed on the rotating pipe (3), and the driving gear (17) is meshed with the driven gear (18).

7. The cutting machine with good heat dissipation effect for hardware processing as claimed in claim 6, characterized in that the driving motor (16) is a servo motor.

8. The cutting machine with good heat dissipation effect for hardware processing as claimed in claim 1, characterized in that two refrigeration rods (19) are arranged at the bottom inside the bottom box (1), and the refrigeration rods (19) are in one-to-one correspondence with the air exhaust pipes (7).

9. The cutting machine with good heat dissipation effect for hardware processing as claimed in claim 1, characterized in that the rotating pipe (3) is provided with an anti-corrosion zinc coating.

10. The cutting machine with good heat dissipation effect for hardware processing as claimed in claim 1, characterized in that the sealing ring (9) is provided with a chamfer.

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