High-precision aluminum product seamless tube perforating device

Abstract

The invention relates to a high-precision aluminum product seamless tube perforating device which comprises a positioning column and a perforating component, the perforating component is arranged at the left end of the positioning column, and a heat dissipation device and a main oil cylinder are arranged in the positioning column; the heat dissipation device comprises a mixing box, a fairing, an air suction fan, a mixing cover and a power rotating disc are sequentially fixed to the position in the mixing box from left to right, and the locking mechanism comprises a positioning groove formed in the middle, close to the right end, of a perforating component, an expansion ring pipe and a trapezoidal locking block; water vapor generated during cooling cleans oxide skin impurities on the surface layer of the perforated component through the ventilation holes; through mutual cooperation of the air suction fan and the power rotating disc, circulation of cooling water and air in the cooling process of the perforated part is completed, and extra power is not needed to drive the heat dissipation device. And the expansion ring pipe is heated to expand and extrude the positioning protruding part, the perforating component is arranged on the positioning column through the double-locking effect, and the perforating component is prevented from loosening during perforating work.

Description

Technical Field

[0001] The invention belongs to the technical field of steel pipe rolling, and in particular relates to a high-precision aluminum seamless pipe perforating device. Background Art

[0002] Seamless steel pipe is a steel pipe with no seams on the surface. It is made by perforating a whole round steel bar and has a wide range of applications. When making seamless steel pipes, the main process includes heating, perforating, oblique rolling or continuous rolling, pickling and other steps of round tube billets or square billets.

[0003] The piercing head is a key tool in the production of seamless steel pipes. The quality and service life directly affect the output, quality and economic benefits of steel pipe production. The working conditions of the piercing head are quite harsh. It not only has to withstand strong axial pressure, but also has to overcome the strong deformation friction between the inner wall. Usually, seamless steel pipes are usually made by piercing and rolling the round steel heated to a certain temperature with the piercing head of the seamless steel pipe. During the piercing process, the piercing head of the seamless steel pipe needs to withstand a large pressure from the round pipe blank, which can easily cause seamless steel pipes. The perforated plug and the middle part of the seamless steel pipe are cracked, and the top of the plug is in direct contact with the high-temperature round steel on the outer wall, which accelerates the wear of the plug at high temperature. Usually, the service life is short and the cost is high. In order to ensure the service life of the plug, the plug needs to be cooled in time during the processing of seamless steel pipes to avoid excessive temperature. In addition, the driving stroke of the plug is limited by the main plunger. The cylinder is installed inside the main plunger. The main plunger limits the size of the cylinder, which further limits the stroke of the cylinder. In addition, it is difficult to ensure the concentricity of the main cylinder and the perforation cylinder, which limits the precision of seamless pipe products.

[0004] Improvements need to be made to address the shortcomings of the existing technology. Summary of the invention

[0005] In view of this, the object of the present invention is to provide a high-precision aluminum seamless pipe perforating device to solve the above-mentioned problems.

[0006] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a high-precision aluminum seamless pipe perforating device, comprising a positioning column and a perforating component, the perforating component is arranged at the left end of the positioning column, and the positioning column is provided with two parts consisting of a heat dissipation device and a main oil cylinder, wherein the main oil cylinder is located on the right side of the heat dissipation device, and a main plunger is slidably connected in the main oil cylinder, a limit rod is fixed in the middle of the right side of the main plunger, the right end of the limit rod passes through the right end of the main cylinder body, and a limit nut is fixed to the right end of the limit rod, a cylindrical positioning protrusion is arranged in the middle of the left end of the positioning rod, the perforating component is sleeved on the positioning protrusion, and a locking mechanism is arranged inside the perforating component for fixing the perforating component on the positioning column.

[0007] The heat dissipation device includes a mixing box, a first air collecting box is arranged between the mixing box and the main oil cylinder, a plurality of first exhaust channels are evenly distributed around the mixing box, the right end of the first exhaust channel leads to the second air collecting box, the second air collecting box is annular and coincides with the axis of the first air collecting box, a mixing tube is arranged in the mixing box, the mixing tube is rotatably connected to the main body of the positioning column, the left end of the mixing tube passes through the positioning protrusion, the right end of the mixing tube is inserted into the first air collecting box, the first air collecting box is connected to an intake pipe, the second air collecting box is connected to an exhaust pipe, and the first air collecting box is connected to a cooling water pipe, the left end of the cooling water pipe is inserted into the first exhaust channel, the intake pipe, the exhaust pipe and the cooling water pipe are spirally wrapped around the main oil cylinder and pass through the right end of the positioning column.

[0008] The mixing tube is fixed with a fairing, an air intake fan, a mixing hood and a power turntable in sequence from left to right in the mixing box. The fairing, the mixing hood and the mixing box are rotatably connected, the power turntable is rotatably connected to the right end port of the mixing box, and exhaust fan blades are evenly distributed on the power turntable. The exhaust fan blades are located on the left side of the second air collecting box, so as to draw the gas in the exhaust channel into the second air collecting box and discharge it; the fairing is a conical structure convex to the left, and a fairing channel is evenly distributed in an annular shape inside the fairing. The fairing channel is parallel to the oblique side surface of the fairing, and one end of the fairing channel is connected to the mixing tube and the other end leads to the air intake fan. The mixing hood is a conical structure convex to the right, and a mixed flow channel is evenly distributed in an annular shape inside the mixing hood. The mixed flow channel is parallel to the oblique side surface of the mixing hood, and one end of the mixed flow channel is connected to the mixing tube and the other end leads to the air intake fan. An atomizing nozzle is installed at one end of the mixed flow channel leading to the air intake fan, and the atomizing nozzle is used to atomize the air and the cooling mixture in the mixing hood and then spray it out.

[0009] The locking mechanism includes a positioning groove, an expansion ring tube, and a trapezoidal locking block arranged in the middle of the right end of the perforated component. The positioning protrusion of the positioning column is inserted into the positioning groove. An annular groove is arranged in the positioning groove. The inclined surfaces of the left and right sides of the positioning groove near the two ends are inclined downward. The expansion ring tube is sleeved in the annular groove of the positioning groove, and the left and right ends of the expansion ring tube are fixedly connected to the trapezoidal locking block, and the inclined surface on the back side of the trapezoidal locking block fits with the inclined surface of the annular groove.

[0010] An intake channel and multiple second exhaust channels are arranged in the perforated component, the right end of the intake channel is connected to the mixing tube, the second exhaust channels correspond to the first exhaust channels one by one, the second exhaust channels are evenly distributed around the locking mechanism, the left end of the second exhaust channel is bent toward the axis of the perforated component and connected to the intake channel, the right end of the second exhaust channel is connected to the first exhaust channel, and multiple ventilation holes are evenly distributed on the side wall of the perforated component, and the ventilation holes are connected to the second exhaust channels.

[0011] The outer wall of the expansion ring tube is symmetrically provided with two annular heat exchange grooves, and a heat exchange annular channel is formed between the heat exchange groove and the inner wall of the annular groove of the positioning groove. A plurality of heat exchange channels are evenly distributed between the heat exchange annular channel and the second exhaust channel. One end of the heat exchange channel is connected to the second exhaust channel, and the other end of the heat exchange channel is connected to the heat exchange annular channel. A U-shaped channel is provided inside the expansion ring tube, and both ends of the U-shaped channel are respectively connected to the heat exchange grooves on the corresponding side.

[0012] Preferably, the cross-sectional diameter of the cooling water pipe is smaller than the cross-sectional diameter of the mixing tube, ensuring that a gap is left between the outer wall of the cooling water pipe and the inner wall of the mixing tube, so as to facilitate the air in the first air collecting box to enter the mixing tube.

[0013] Preferably, the cross-sectional diameters of the exhaust pipe, the air intake pipe and the cooling water pipe gradually decrease.

[0014] Preferably, the air intake pipe, the exhaust pipe and the cooling water pipe are spirally wrapped around the periphery of the master cylinder, and the left and right sides of the exhaust pipe are adjacent to the air intake pipe and the cooling water pipe respectively, so as to avoid the exhaust pipe aggregation causing excessive local temperature.

[0015] Preferably, valves are provided on the air intake pipe and the cooling pipe for respectively controlling the amounts of air and cooling water in the first exhaust passage.

[0016] The beneficial effects of the present invention are as follows: cooling water of the present invention enters the first exhaust channel through the cooling water pipe in sequence, and the outside air enters the first air collecting box through the air intake pipe, and then enters the first exhaust channel to mix with the cooling water. After the cooling water and air are mixed, they are sprayed out from the atomizing nozzle, pass through the suction fan, and then pass through the fairing to enter the first exhaust channel again. After being heated in the second exhaust channel, the water is vaporized and sprayed out from the air exchange hole, atomized by the atomizing nozzle and driven by the suction fan, so that the atomized cooling water and air are accelerated to flow to the second exhaust channel, accelerating the circulation of cooling water and air and ensuring the cooling effect; at the same time, the oxide scale impurities on the surface of the perforated component are cleaned through the air exchange hole; the airflow expanded by the heat in the second exhaust channel flows to the exhaust fan blades, and then discharged from the exhaust pipe, converting the internal energy of the cooling water and air after heating into kinetic energy to drive the power turntable to rotate, thereby driving the suction fan to rotate, and further drawing the outside air and cooling water into the first exhaust channel, completing the circulation of the cooling process of the perforated component by cooling water and air, without the need Additional power drives the heat dissipation device; due to the different specific heat capacities of air and water, valves are respectively arranged on the intake pipe and the cooling pipe to control the amount of air and cooling water entering the first exhaust channel, thereby controlling the cooling effect of the perforated component and avoiding excessive cooling of the perforated component, which causes the temperature of the round steel to drop too quickly through heat transfer, resulting in an increase in the perforation resistance, and at the same time avoids the cooling effect being not obvious, resulting in the temperature of the perforated component being too high; the water vapor in the second exhaust channel enters the U-shaped channel through the heat exchange channel, and the expansion ring tube expands due to the heat and squeezes the positioning protrusion. The double locking effect fixes the perforated component on the positioning column to avoid the loosening of the perforated component during the perforation work; under the condition of the same outer diameter of the main plunger, the positioning column body is processed into the main oil cylinder. Compared with installing the main oil cylinder inside the positioning column, the concentricity of the main oil cylinder can be guaranteed, and the precision of the seamless pipe product can be improved; and the perforated oil cylinder can be made larger, so that a larger seamless pipe can be made; the stroke of the perforated oil cylinder can be longer, and the thickness of the extrusion beam will not be affected by the stroke. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is the external structure diagram of the main body of the perforating device;

[0018] Figure 2 This is a diagram of the internal structure of the main body of the perforating device;

[0019] Figure 3 This is the internal structure diagram of the positioning column;

[0020] Figure 4 This is a diagram of the internal structure of the perforated component;

[0021] Figure 5 This is the structural diagram of the expansion ring tube.

[0022] Numbers in the figure: 1 positioning column; 101 positioning protrusion; 2 perforated component; 201 positioning groove; 3 limit rod; 4 limit nut; 5 main oil cylinder; 6 main plunger; 7 mixing box; 8 first air collecting box; 9 first exhaust channel; 10 second air collecting box; 11 mixing pipe; 12 intake pipe; 13 exhaust pipe; 14 cooling water pipe; 15 fairing; 16 intake fan; 17 mixing cover; 18 power turntable; 19 exhaust fan blades; 20 atomizing nozzle; 21 expansion ring; 22 trapezoidal locking block; 23 intake channel; 24 second exhaust channel; 25 ventilation hole; 26 heat exchange groove; 27 heat exchange channel; 28 U-shaped channel. DETAILED DESCRIPTION

[0023] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments:

[0024] like Figure 1-5 As shown, a high-precision aluminum seamless pipe perforating device includes a positioning column 1 and a perforating component 2. The perforating component 2 is arranged at the left end of the positioning column 1. The positioning column 1 is provided with a heat dissipation device and a main oil cylinder 5. The main oil cylinder 5 is located on the right side of the heat dissipation device. A main plunger 6 is slidably connected in the main oil cylinder 5. A limit rod 3 is fixed to the middle part of the right side of the main plunger 6. The right end of the limit rod 3 passes through the right end of the main cylinder body 1, and the right end of the limit rod 3 is fixed to the limit nut 4. A cylindrical positioning protrusion 101 is arranged in the middle part of the left end of the positioning rod 1. The perforating component 2 is sleeved on the positioning protrusion 101. A locking mechanism is arranged inside the perforating component 2 for fixing the perforating component 2 on the positioning column 1.

[0025] In this embodiment, the heat dissipation device includes a mixing box 7, a first air collecting box 8 is arranged between the mixing box 7 and the main oil cylinder 5, a plurality of first exhaust channels 9 are evenly distributed around the mixing box 7, the right end of the first exhaust channel 9 leads to the second air collecting box 10, the second air collecting box 10 is annular and coincides with the axis of the first air collecting box 8, a mixing tube 11 is arranged in the mixing box 7, the mixing tube 11 is rotatably connected to the main body of the positioning column 1, the left end of the mixing tube 11 passes through the positioning protrusion 101, and the right end of the mixing tube 11 is inserted into the first air collecting box 8, the first air collecting box 8 is connected to an intake pipe 12, the second air collecting box 10 is connected to an exhaust pipe 13, and the first air collecting box 8 is connected to a cooling water pipe 14, the left end of the cooling water pipe 14 is inserted into the first exhaust channel 9, the intake pipe 12, the exhaust pipe 13 and the cooling water pipe 14 are spirally wrapped around the main oil cylinder 5 and pass through the right end of the positioning column 1.

[0026] In this embodiment, the mixing tube 11 is fixed with a fairing 15, an air intake fan 16, a mixing hood 17 and a power turntable 18 in sequence from left to right in the mixing box 7. The fairing 15 and the mixing hood 17 are rotatably connected with the mixing box 7, the power turntable 18 is rotatably connected with the right end port of the mixing box 7, and exhaust fan blades 19 are evenly distributed on the power turntable 18. The exhaust fan blades 19 are located on the left side of the second air collecting box 10, so as to facilitate the gas in the exhaust channel 9 to be drawn into the second air collecting box 10 and discharged; the fairing 15 is a conical structure convex to the left, and the fairing 15 is evenly distributed with a ring of fairing channels, which are parallel to the oblique side of the fairing 15, and one end of the fairing channel is connected with the mixing tube 11 and the other end leads to the air intake fan 16.

[0027] The mixing hood 17 is a conical structure convex to the right, and a mixing flow channel is evenly distributed in an annular shape inside the mixing hood 17. The mixing flow channel is parallel to the oblique side surface of the mixing hood 17, and one end of the mixing flow channel is connected to the mixing pipe 11 and the other end leads to the suction fan 16. An atomizing nozzle 20 is installed at one end of the mixed flow channel leading to the suction fan 16, and the air and the cooling mixture in the mixing hood 17 are atomized and then sprayed out by the atomizing nozzle.

[0028] In this embodiment, the locking mechanism includes a positioning groove 201, an expansion ring tube 21, and a trapezoidal locking block 22 arranged in the middle of the right end of the perforated component 2. The positioning protrusion 101 of the positioning column 1 is inserted into the positioning groove 201. An annular groove is arranged in the positioning groove 201. The inclined surfaces of the left and right ends of the positioning groove 201 are inclined downward. The expansion ring tube 21 is sleeved in the annular groove of the positioning groove 201, and the left and right ends of the expansion ring tube 21 are fixedly connected to the trapezoidal locking block 21, and the inclined surface on the back side of the trapezoidal locking block 22 is in contact with the inclined surface of the annular groove.

[0029] In this embodiment, an intake channel 23 and a plurality of second exhaust channels 24 are provided in the perforated component 2, the right end of the intake channel 23 is connected to the mixing tube 11, and the second exhaust channels 24 correspond to the first exhaust channels 9 one by one, wherein the second exhaust channels 24 are evenly distributed around the locking mechanism, and the left end of the second exhaust channel 24 is bent toward the axis of the perforated component 2 and connected to the intake channel 23, the right end of the second exhaust channel 24 is connected to the first exhaust channel 9, and a plurality of ventilation holes 25 are evenly distributed on the side wall of the perforated component 2, and the ventilation holes 25 are connected to the second exhaust channels 24.

[0030] In this embodiment, two annular heat exchange grooves 26 are symmetrically arranged on the outer wall of the expansion ring tube 21, and a heat exchange annular channel is formed between the heat exchange groove 26 and the inner wall of the annular groove of the positioning groove 201. A plurality of heat exchange channels 27 are evenly distributed between the heat exchange annular channel and the second exhaust channel 24. One end of the heat exchange channel 27 is connected to the second exhaust channel 24, and the other end of the heat exchange channel 27 is connected to the heat exchange annular channel. A U-shaped channel 28 is arranged inside the expansion ring tube 21, and both ends of the U-shaped channel 28 are respectively connected to the heat exchange groove 26 on the corresponding side.

[0031] In this embodiment, the cross-sectional diameter of the cooling water pipe 14 is smaller than the cross-sectional diameter of the mixing tube 11 , ensuring that a gap is left between the outer wall of the cooling water pipe 14 and the inner wall of the mixing tube 11 to facilitate the air in the first air collecting box 8 to enter the mixing tube 11 .

[0032] In this embodiment, the cross-sectional diameters of the exhaust pipe 13, the intake pipe 12 and the cooling water pipe 14 gradually decrease.

[0033] In this embodiment, the intake pipe 12, exhaust pipe 13 and cooling water pipe 14 are spirally wrapped around the main cylinder 5, and the left and right sides of the exhaust pipe 13 are adjacent to the intake pipe 12 and the cooling water pipe 14 respectively, to avoid the exhaust pipe 13 from gathering and causing local excessive temperature.

[0034] In this embodiment, valves are provided on the air intake pipe 12 and the cooling pipe 14 for respectively controlling the amount of air and cooling water in the first exhaust passage 9 .

[0035] In this embodiment, the working process of the perforating device is as follows: when the perforating component 2 is used to perforate the round steel, the cooling water enters the first exhaust channel 9 through the cooling water pipe 14 in turn, and the outside air is passed into the first air collecting box 8 through the intake pipe 12, and then enters the first exhaust channel 9 to mix with the cooling water. As the first exhaust channel 9 rotates, the suction fan 16 is driven to rotate. The cooling water and air are mixed and sprayed out from the atomizing nozzle 20, and after passing through the suction fan 16, they pass through the fairing 15 and then enter the first exhaust channel 9 again, and enter the second exhaust channel 24 through the intake channel 23. After the second exhaust channel 24 is heated, the water vaporizes and sprays out from the ventilation hole 25, cleans the oxide scale impurities on the surface of the perforated component 2, and then flows back to the second exhaust channel 24 through the ventilation hole 25 and then flows to the exhaust The fan blades 19 are then discharged from the exhaust pipe 13. Since the internal energy of the cooling water and air increases when they are heated, they convert the internal energy into kinetic energy after flowing to the exhaust fan blades 19 to drive the power turntable 18 to rotate, thereby driving the suction fan 16 to rotate, and further drawing the outside air and cooling water into the first exhaust channel 9 to complete the circulation of the cooling process of the perforated component 2 by the cooling water and air; since the specific heat capacity of air and water is different, the cooling effect on the perforated component 2 is different. Valves are provided on the air intake pipe 12 and the cooling pipe 14 to respectively control the amount of air and cooling water entering the first exhaust channel 9, so as to control the cooling effect of the perforated component 2, avoid excessive cooling of the perforated component 2, cause the temperature of the round steel to drop too fast through heat transfer, and cause the perforation resistance to increase, and at the same time avoid the cooling effect being not obvious, resulting in the temperature of the perforated component 2 being too high.

[0036] Since the air intake pipe 12, the exhaust pipe 13 and the cooling water pipe 14 all surround the side wall of the master cylinder 5, the air intake pipe 12 and the cooling water pipe 14 cool down the master cylinder 5 area to prevent the master cylinder 5 from being overheated. In addition, under the condition of the same outer diameter of the main plunger 6, the positioning column 1 body is processed into the master cylinder 5. Compared with installing the master cylinder 5 inside the positioning column 1, the master cylinder can be made larger, which is conducive to the production of a larger seamless pipe.

[0037] In addition, the water vapor in the second exhaust channel 24 enters the U-shaped channel 28 through the heat exchange channel 27, and the expansion ring tube 21 expands due to the heat. On the one hand, the expansion ring tube 21 directly squeezes the positioning protrusion 101, and on the other hand, the expansion of the expansion ring tube 101 pushes the trapezoidal locking block 22, so that the trapezoidal locking block 22 squeezes the positioning protrusion 101. The double locking effect fixes the perforating component 2 on the positioning column 1 to prevent the perforating component 2 from loosening during the perforating work.

[0038] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A high-precision aluminum seamless pipe perforating device, comprising a positioning column and a perforating component, characterized in that: The perforated component is arranged at the left end of the positioning column, and the positioning column is provided with two parts consisting of a heat dissipation device and a main oil cylinder, wherein the main oil cylinder is located on the right side of the heat dissipation device, and a main plunger is slidably connected in the main oil cylinder, and a limited-range rod is fixed to the middle part of the right side of the main plunger, and the right end of the limited-range rod passes through the right end of the main cylinder body, and a limited-range nut is fixed to the right end of the limited-range rod, and a cylindrical positioning protrusion is arranged in the middle part of the left end of the positioning rod, and the perforated component is sleeved on the positioning protrusion, and a locking mechanism is arranged inside the perforated component for fixing the perforated component on the positioning column, and the heat dissipation device includes a mixing box, and a first An air collecting box and a mixing box are evenly distributed with multiple first exhaust channels, the right end of the first exhaust channel leads to the second air collecting box, the second air collecting box is annular and coincides with the axis of the first air collecting box, a mixing tube is arranged in the mixing box, the mixing tube is rotatably connected to the main body of the positioning column, the left end of the mixing tube passes through the positioning protrusion, and the right end of the mixing tube is inserted into the first air collecting box, the first air collecting box is connected with an air intake pipe, the second air collecting box is connected with an exhaust pipe, and the first air collecting box is connected with a cooling water pipe, and the left end of the cooling water pipe is inserted into the first exhaust channel, the air intake pipe, the exhaust pipe and the cooling water pipe are spirally wrapped around the main cylinder and pass through the right end of the positioning column.

2. The high-precision aluminum seamless pipe perforating device according to claim 1 is characterized in that: The mixing tube is fixed with a fairing, an air intake fan, a mixing hood and a power turntable in sequence from left to right in the mixing box. The fairing, the mixing hood and the mixing box are connected in a rotatable sleeve manner. The power turntable is rotatably connected to the right end port of the mixing box. Exhaust fan blades are evenly distributed on the power turntable. The exhaust fan blades are located on the left side of the second air collecting box, so as to facilitate the gas in the exhaust channel to be drawn into the second air collecting box and discharged; The fairing is a conical structure convex to the left, and a fairing channel is evenly distributed in an annular shape inside the fairing. The fairing channel is parallel to the oblique side surface of the fairing, and one end of the fairing channel is connected to the mixing tube and the other end leads to the intake fan. The mixing hood is a conical structure convex to the right, and a mixed flow channel is evenly distributed in an annular shape inside the mixing hood. The mixed flow channel is parallel to the oblique side surface of the mixing hood, and one end of the mixed flow channel is connected to the mixing tube and the other end leads to the intake fan. An atomizing nozzle is installed at one end of the mixed flow channel leading to the intake fan, and the atomizing nozzle is used to atomize the air and the cooling mixture in the mixing hood and then spray it out.

3. The high-precision aluminum seamless pipe perforating device according to claim 1 is characterized in that: The locking mechanism includes a positioning groove, an expansion ring tube, and a trapezoidal locking block arranged in the middle of the right end of the perforated component. The positioning protrusion of the positioning column is inserted into the positioning groove. An annular groove is arranged in the positioning groove. The inclined surfaces of the left and right sides of the positioning groove near the two ends are inclined downward. The expansion ring tube is sleeved in the annular groove of the positioning groove, and the left and right ends of the expansion ring tube are fixedly connected to the trapezoidal locking block, and the inclined surface on the back side of the trapezoidal locking block fits with the inclined surface of the annular groove.

4. The high-precision aluminum seamless pipe perforating device according to claim 1 is characterized in that: An intake channel and multiple second exhaust channels are arranged in the perforated component, the right end of the intake channel is connected to the mixing tube, the second exhaust channels correspond to the first exhaust channels one by one, the second exhaust channels are evenly distributed around the locking mechanism, the left end of the second exhaust channel is bent toward the axis of the perforated component and connected to the intake channel, the right end of the second exhaust channel is connected to the first exhaust channel, and multiple ventilation holes are evenly distributed on the side wall of the perforated component, and the ventilation holes are connected to the second exhaust channels.

5. The high-precision aluminum seamless pipe perforating device according to claim 3 is characterized in that: The outer wall of the expansion ring tube is symmetrically provided with two annular heat exchange grooves, and a heat exchange annular channel is formed between the heat exchange groove and the inner wall of the annular groove of the positioning groove. A plurality of heat exchange channels are evenly distributed between the heat exchange annular channel and the second exhaust channel. One end of the heat exchange channel is connected to the second exhaust channel, and the other end of the heat exchange channel is connected to the heat exchange annular channel. A U-shaped channel is provided inside the expansion ring tube, and both ends of the U-shaped channel are respectively connected to the heat exchange grooves on the corresponding side.

6. The high-precision aluminum seamless pipe perforating device according to claim 1 is characterized in that: The cross-sectional diameter of the cooling water pipe is smaller than that of the mixing pipe, ensuring that a gap is left between the outer wall of the cooling water pipe and the inner wall of the mixing pipe, so as to facilitate the air in the first air collecting box to enter the mixing pipe.

7. A high-precision aluminum seamless pipe perforating device according to claim 1 is characterized in that the intake pipe, exhaust pipe and cooling water pipe are spirally wrapped around the main cylinder, and the left and right sides of the exhaust pipe are adjacent to the intake pipe and the cooling water pipe respectively, so as to avoid the exhaust pipe aggregation causing local excessive temperature.

8. The high-precision aluminum seamless pipe perforating device according to claim 2 is characterized in that: The air intake pipe and the cooling pipe are both provided with valves for respectively controlling the amount of air and cooling water in the first exhaust passage.

Images