CN114536017A - Double-head type coaxial boring and milling machining device for machining - Google Patents

Abstract

The invention relates to the technical field of mechanical processing, and discloses a double-headed coaxial boring and milling processing device for mechanical processing. The movable cabinet, the first movable cabinet and the second movable cabinet are rotatably provided with rotating rods, and the opposite ends of the two rotating rods are fixedly installed with drill bit fixtures; the processed parts are clamped and fixed by the chuck, The drill bit fixture is loaded with the drill bit. When drilling on both sides of the workpiece to be processed, it is enough to control the operation of the driving motor and the rotary motor. The operation of the rotary motor can make the drill bit fixture and the drill bit rotate through the transmission, which is convenient for drilling the processed parts. During processing, the operation of the driving motor can make the two drill bits approach or move away from each other through transmission, thereby facilitating the control of the drilling depth of the drill bits.

Description

A double-head coaxial boring and milling machining device for machining

technical field

The invention relates to the technical field of machining, in particular to a double-head type coaxial boring and milling machining device for machining.

Background technique

Machining refers to the process of changing the dimensions or performance of the workpiece through mechanical equipment. In mechanical processing, the most commonly used equipment is machine tools, including boring and milling machine tools, cutting machine tools, forging machine tools and woodworking machine tools. Machine tools, but all parts with high precision requirements and fine surface roughness requirements are generally processed on the machine tool;

However, in practical applications, we found that the boring and milling machine tools in the prior art still have certain shortcomings, such as:

When drilling or processing both ends of the shaft parts, the existing boring and milling machine tools can only drill or process one end of the shaft parts at a time. Drilling is performed at one end; this will lead to a very cumbersome processing process and low processing efficiency, and the parts are easily dislocated during the re-clamping process, resulting in asymmetric holes processed at both ends of the part, affecting the quality of the parts. production accuracy;

Based on this, we propose a double-head coaxial boring and milling machining device for machining.

SUMMARY OF THE INVENTION

(1) Technical problems solved

In view of the deficiencies of the prior art, the present invention provides a double-headed coaxial boring and milling machining device for machining, which has the advantage of being capable of machining both ends of a part at the same time.

(2) Technical solutions

In order to achieve the above-mentioned purpose of being able to process both ends of a part at the same time, the present invention provides the following technical solution: a double-headed coaxial boring and milling machining device for machining, comprising a base cabinet, the left and right sides of the top of the base cabinet are A first movable cabinet and a second movable cabinet are respectively movably arranged, a rotating rod is rotatably arranged in the first movable cabinet and the second movable cabinet, and a drill bit fixture is fixedly installed at the opposite ends of the two rotating rods;

A chuck is arranged between the two drill bit fixtures, the parts to be processed are clamped in the chuck, and the driving mechanism arranged in the bottom cabinet can make the first movable cabinet and the second movable cabinet on the top of the bottom cabinet. close to or away from each other.

As a preferred technical solution of the present invention, the driving mechanism includes a threaded rod, a first nut and a second nut, a threaded rod is rotatably arranged in the base cabinet, and one end of the threaded rod extends to the outside of the base cabinet and The output shaft of the drive motor is fixedly connected;

The left and right sides of the outer wall of the threaded rod are respectively provided with a first thread and a second thread with opposite directions of rotation. A movable cabinet and a second movable cabinet are respectively fixedly mounted on the tops of the first nut and the second nut.

As a preferred technical solution of the present invention, a driven wheel is fixedly installed on the outer wall of the rotating rod, the outer wall of the driven wheel is connected with a driving wheel through a timing belt, and the driving wheel is rotatably arranged on the first movable cabinet through a supporting bearing. or in the second movable cabinet;

A slot is opened at the center of the driving wheel, and a drive rod is inserted into the slot, and the drive rod is fixedly installed at the end of the output shaft of the rotating motor, the rotating motor is fixedly installed on the fixed plate, and the The fixing plate is fixedly installed on the side of the base cabinet.

As a preferred technical solution of the present invention, the outer wall of the driving rod is uniformly provided with splines, and the inner wall of the slot is uniformly provided with flower grooves coupled with the splines.

As a preferred technical solution of the present invention, the outer wall of the driving rod is also connected with a fixed bearing, and the fixed bearing is fixedly installed on the inner wall of the fixed cabinet, and the fixed cabinet is fixedly installed on the top of the bottom cabinet.

As a preferred technical solution of the present invention, push rods are fixedly installed on the opposite sides of the first movable cabinet and the second movable cabinet, and pistons are fixedly installed on the opposite sides of the two push rods. The pistons are all movably arranged in the plug cylinder, and the plug cylinder is fixedly installed on the top of the fixed cabinet;

The middle part of the outer wall of the plug cylinder is connected with a water tank through a water pump, and the water tank is fixedly installed on the bottom cabinet;

The top of the plug cylinder is fixedly installed with a vertical pipe, the left and right sides of the top of the vertical pipe are connected with side connecting pipes, the top ends of the two side connecting pipes are all connected with curved pipes, and the two curved pipes are connected with each other. The top ends of the pipes are all connected with discharge pipes, and both ends of the two discharge pipes are provided with spray heads.

As a preferred technical solution of the present invention, the water intake pipe is provided with a water inlet check valve, and the vertical pipe is provided with a water outlet check valve.

As a preferred technical solution of the present invention, a first pulley is fixed in the middle of the outer wall of the drive rod, and a second pulley is connected to the outer wall of the first pulley through a linkage belt. A horizontal shaft is fixedly installed at the center, and the horizontal shaft is rotatably arranged in the bellows, the top of the bellows is provided with two collection pipes, and the tops of the two collection pipes are respectively arranged on the left and right sides of the chuck;

Fan blades are evenly arranged on the outer wall of the horizontal shaft.

As a preferred technical solution of the present invention, a filter screen is fixedly installed on the inner wall of the bellows, and an inclined baffle is arranged above the filter screen;

A collection box is fixedly installed on the outer wall of the bellows, and the collection box and the bellows communicate with each other through a communication groove.

As a preferred technical solution of the present invention, the higher end of the oblique baffle is fixedly installed on the inner wall of the bellows, and the lower end of the oblique baffle is located in the communication groove.

(3) Beneficial effects

Compared with the prior art, the present invention provides a double-headed coaxial boring and milling machining device for machining, which has the following beneficial effects:

1. The machined double-headed coaxial boring and milling processing device clamps and fixes the processed part through the chuck, and loads the drill bit through the drill bit fixture. When drilling on both sides of the processed part needs to be performed, control the driving motor. It is enough to run with the rotating motor. The rotating motor can rotate the rotating rod and the drill bit fixture through the transmission, and then use the rotating drill bit to facilitate the drilling of the processed parts. The driving motor can make the first movable cabinet and the first movable cabinet through the transmission. The two movable cabinets are close to or away from each other. The first movable cabinet and the second movable cabinet are close to or away from each other. The rotating rod and the drill bit fixture can make the two drill bits close to or away from each other, so as to control the drilling depth of the drill bit.

2. In this machined double-headed coaxial boring and milling processing device, the operation of the rotating motor drives the driving rod at the end of the output shaft to rotate, and the rotation of the driving rod can drive the driving wheel to rotate through the clamping of the splines in the flower groove, and the driving wheel rotates. The rotation drives the driven wheel to rotate through the synchronous belt. The rotation of the driven wheel can drive the drill bit fixture and the drill bit to rotate through the rotating rod, which is convenient for drilling processing. The driving wheel can also freely move left and right on the driving rod, which is convenient to adjust the position of the driving wheel.

3. In this machined double-headed coaxial boring and milling processing device, the operation of the driving motor drives the threaded rod at the top of its output shaft to rotate. The nut and the second nut move in opposite directions, approaching or moving away from each other, the first nut and the second nut approaching or moving away from each other drive the first movable cabinet and the second movable cabinet to approach or move away from each other, thus, by approaching each other Or the first movable cabinet and the second movable cabinet, which are far away from each other, can adjust the distance between the drill bit fixture and the workpiece to be processed, so as to control the drilling depth of the drill bit.

4. For the machined double-headed coaxial boring and milling processing device, when the first movable cabinet and the second movable cabinet gradually approach each other, that is, when the drilling depth of the drill bit gradually becomes deeper, the two push rods will also make the two The pistons are close to each other, and the two pistons are close to each other to squeeze the auxiliary liquid between them. The squeezed auxiliary liquid enters the two side connecting pipes through the vertical pipe, and then is sprayed from the nozzle through the elbow and the discharge pipe, just sprayed on. The processing point of the drill bit and the processed parts can play an auxiliary role in the drilling processing of the drill bit.

5. In the machined double-headed coaxial boring and milling processing device, when the rotating motor operates by controlling the rotation of the driving rod to drive the drill bit fixture to rotate, the driving rod will also drive the first pulley to rotate, and the first pulley rotates through the linkage The belt drives the second pulley to rotate, the second pulley rotates to drive the horizontal axis to rotate, the horizontal axis rotates to drive the fan blade to rotate, and the fan blade rotates to generate wind, so that a negative pressure is generated at the collection pipe. The chips generated when the parts are drilled will be sucked in by the collection pipe, and then enter the bellows and hit the inclined baffle. Under the blocking and guidance of the inclined baffle, the chips will fall into the collection box, thereby , which can automatically collect the debris generated during the machining of the machined parts.

Description of drawings

Fig. 1 is the three-dimensional schematic diagram of the overall structure of the present invention;

Fig. 2 is the sectional view of the overall structure of the present invention;

Fig. 3 is the front sectional view of the overall structure of the present invention;

Fig. 4 is the enlarged schematic diagram of the driving wheel part of the present invention;

Fig. 5 is the sectional view of the plug barrel part of the present invention;

Fig. 6 is the enlarged schematic diagram of the elbow part of the present invention;

Fig. 7 is the sectional view of the fixed cabinet part of the present invention;

Figure 8 is a cross-sectional view of the bellows portion of the present invention.

In the figure: 1. Bottom cabinet; 2. Threaded rod; 3. First nut; 4. Second nut; 5. Drive motor; 6. First movable cabinet; 7. Second movable cabinet; 8. Rotating rod; 9 , drill fixture; 10, chuck; 11, processed parts; 12, driven wheel; 13, timing belt; 14, driving wheel; 15, driving rod; 16, supporting bearing; 17, rotating motor; 18, fixing plate; 19, fixed bearing; 20, fixed cabinet; 21, slot; 22, flower groove; 23, spline; 24, push rod; 25, piston; 26, plug cylinder; 27, suction pipe; 28, water tank; 29, Vertical pipe; 30, side connecting pipe; 31, elbow; 32, discharge pipe; 33, nozzle; 34, first pulley; 35, linkage belt; 36, second pulley; 37, horizontal shaft; 38, bellows ; 39, fan blade; 40, filter screen; 41, inclined baffle; 42, collection box; 43, communication groove; 44, collection pipe.

Detailed ways

Example 1:

Please refer to FIG. 1-FIG. 4, a machined double-headed coaxial boring and milling processing device includes a base cabinet 1, and the left and right sides of the top of the base cabinet 1 are respectively movably provided with a first movable cabinet 6 and a second movable cabinet 7. Both the first movable cabinet 6 and the second movable cabinet 7 are provided with rotating rods 8, the opposite ends of the two rotating rods 8 are fixedly installed with a drill bit fixture 9, and a chuck 10 is provided between the two drill bit fixtures 9. , the workpiece 11 is clamped in the chuck 10, and the drive mechanism arranged in the base cabinet 1 can make the first movable cabinet 6 and the second movable cabinet 7 close to or away from each other on the top of the base cabinet 1;

In this embodiment, the driving mechanism includes a threaded rod 2, a first nut 3 and a second nut 4. A threaded rod 2 is rotatably arranged in the base cabinet 1, and one end of the threaded rod 2 extends to the outside of the base cabinet 1 and is fixedly connected with the drive The output shaft of the motor 5, the left and right sides of the outer wall of the threaded rod 2 are respectively provided with a first thread and a second thread with opposite directions of rotation, and the outer walls of the first thread and the second thread are respectively threadedly connected with a first nut 3 and a second nut 4. The first movable cabinet 6 and the second movable cabinet 7 are fixedly installed on the tops of the first nut 3 and the second nut 4, respectively. The operation of the driving motor 5 drives the threaded rod 2 on the top of its output shaft to rotate, and the threaded rod 2 rotates through it. The first thread and the second thread with opposite rotation directions of the outer wall can make the first nut 3 and the second nut 4 move in opposite directions, approaching or moving away from each other, and the first nut 3 and the second nut 4 move closer to each other or move away from each other. The first movable cabinet 6 and the second movable cabinet 7 are close to or away from each other, so that the distance between the drill holder 9 and the workpiece 11 can be adjusted by the first movable cabinet 6 and the second movable cabinet 7 that are close to or away from each other distance to control the drilling depth of the drill bit;

As shown in FIG. 2 and FIG. 3 , a driven wheel 12 is fixedly installed on the outer wall of the rotating rod 8, and the outer wall of the driven wheel 12 is connected with a driving wheel 14 through a timing belt 13. 6 or the second movable cabinet 7, a slot 21 is opened at the center of the driving wheel 14, and a drive rod 15 is inserted in the slot 21. The drive rod 15 is fixedly installed at the end of the output shaft of the rotary motor 17, and the rotary motor 17 is fixed Installed on the fixing plate 18, the fixing plate 18 is fixedly installed on the side of the bottom cabinet 1, the outer wall of the driving rod 15 is evenly provided with splines 23, and the inner wall of the slot 21 is evenly provided with splines 23. The operation of the rotary motor 17 drives the drive rod 15 at the end of its output shaft to rotate, and the drive rod 15 rotates through the spline 23 in the flower groove 22 to drive the driving wheel 14 to rotate, and the driving wheel 14 rotates through the synchronous belt 13 Drive the driven wheel 12 Rotation, the driven wheel 12 can drive the drill bit fixture 9 and the drill bit to rotate through the rotation rod 8, which is convenient for drilling processing. The driving wheel 14 can also freely move left and right on the driving rod 15, which is convenient for adjusting the position of the driving wheel 14;

In this embodiment, the workpiece 11 is clamped and fixed by the chuck 10, and the drill bit is loaded by the drill holder 9. When drilling needs to be performed on both sides of the workpiece 11, the driving motor 5 and the rotating motor 17 are controlled to operate, namely Yes, the rotating motor 17 can make the rotating rod 8 and the drill bit holder 9 rotate through the transmission, and then use the rotating drill to facilitate the drilling of the workpiece 11. The driving motor 5 can make the first movable cabinet 6 and the first movable cabinet 6 and the first movable cabinet 6 and the first movable cabinet 6 and the first movable cabinet. The second movable cabinet 7 is close to or away from each other, and the first movable cabinet 6 and the second movable cabinet 7 are close to each other or away from each other. The rotating rod 8 and the drill bit fixture 9 can make the two drill bits close to each other or away from each other, so that it is easy to control The drilling depth of the drill bit;

As shown in FIG. 3 , the outer wall of the driving rod 15 is also connected with a fixed bearing 19 . The fixed bearing 19 is fixedly installed on the inner wall of the fixed cabinet 20 , and the fixed cabinet 20 is fixedly installed on the top of the bottom cabinet 1 . The fixed bearing 19 can further The rotation of the driving rod 15 is stabilized to make the rotation more stable.

Embodiment 2:

Please refer to FIG. 5 and FIG. 6 , on the basis of the first embodiment, push rods 24 are fixedly installed on the opposite sides of the first movable cabinet 6 and the second movable cabinet 7 , and the opposite sides of the two push rods 24 are fixed A piston 25 is installed, the two pistons 25 are movably arranged in the plug cylinder 26, the plug cylinder 26 is fixedly installed on the top of the fixed cabinet 20, and the middle part of the outer wall of the plug cylinder 26 is connected to a water tank 28 through a suction pipe 27, and the water tank 28 is fixedly installed On the bottom cabinet 1, the auxiliary liquid in the water tank 28 can be extracted through the water suction pipe 27. In this embodiment, the auxiliary liquid can be cooling liquid, cutting liquid or other auxiliary liquid for processing;

As shown in FIG. 5 and FIG. 6 , a vertical pipe 29 is fixedly installed on the top of the plug cylinder 26 , the left and right sides of the top of the vertical pipe 29 are connected with side connecting pipes 30 , and the top ends of the two side connecting pipes 30 are connected with Elbow 31, the tops of the two elbows 31 are all connected with a discharge pipe 32, and the ends of the two discharge pipes 32 are provided with nozzles 33. When the first movable cabinet 6 and the second movable cabinet 7 gradually approach each other, the drill bit When the drilling depth gradually becomes deeper, the two push rods 24 will also make the two pistons 25 approach each other. Enter the two side connecting pipes 30, and then spray out from the nozzle 33 through the elbow 31 and the discharge pipe 32, just spray on the processing place of the drill bit and the processed part 11, so as to play an auxiliary role in the drilling process of the drill bit;

In this embodiment, the water intake pipe 27 is provided with a water inlet check valve, the auxiliary liquid in the water tank 28 can enter the plug cylinder 26 through the water inlet check valve, and the auxiliary liquid in the plug cylinder 26 cannot pass through the water inlet check valve. The valve enters the water tank 28; the standpipe 29 is provided with a water outlet one-way valve, and the auxiliary liquid in the plug cylinder 26 can be discharged through the water outlet one-way valve, while the outside air cannot be inhaled through the water outlet one-way valve;

In this embodiment, the elbow 31 is arranged around the chuck 10 and does not affect the loading of parts.

Embodiment three:

Referring to FIGS. 7 and 8 , on the basis of Embodiment 1 or Embodiment 2, a first pulley 34 is fixedly arranged in the middle of the outer wall of the driving rod 15 , and the outer wall of the first pulley 34 is connected with a second pulley through the linkage belt 35 . Pulley 36, a horizontal shaft 37 is fixedly installed at the center of the second pulley 36, and the horizontal shaft 37 is rotatably arranged in the bellows 38. The top of the bellows 38 is provided with two collecting pipes 44, and the tops of the two collecting pipes 44 are respectively provided On the left and right sides of the chuck 10, fan blades 39 are evenly arranged on the outer wall of the horizontal shaft 37;

A filter screen 40 is fixedly installed on the inner wall of the bellows 38, an inclined baffle 41 is arranged above the filter screen 40, and a collection box 42 is fixedly installed on the outer wall of the bellows 38. The higher end of the baffle 41 is fixedly installed on the inner wall of the bellows 38, and the lower end of the oblique baffle 41 is located in the communication groove 43;

When the rotary motor 17 operates by controlling the rotation of the driving rod 15 to drive the bit fixture 9 to rotate, the driving rod 15 will also drive the first pulley 34 to rotate, and the first pulley 34 rotates through the linkage belt 35 to drive the second pulley 36 to rotate, The rotation of the second pulley 36 drives the rotation of the horizontal shaft 37, the rotation of the horizontal shaft 37 drives the rotation of the fan blade 39, and the rotation of the fan blade 39 can generate wind power, so that a negative pressure is generated at the collecting pipe 44, and under the action of the negative pressure, the workpiece is processed. 11 The debris generated during drilling will be sucked by the collection pipe 44, and then enter the bellows 38 and hit the inclined baffle 41. Under the blocking and guiding action of the inclined baffle 41, the debris will fall into the collection box 42, so that the chips generated when the processed part 11 is processed can be automatically collected;

In this embodiment, the collection box 42 is provided with water to prevent debris from being sucked out of the collection box 42 .

The working principle of the present invention and the use flow:

The workpiece 11 is clamped and fixed by the chuck 10, and the drill bit is loaded through the drill holder 9. When drilling needs to be performed on both sides of the workpiece 11, the driving motor 5 and the rotary motor 17 can be controlled to operate. The rotary motor 17 Through transmission, the rotating rod 8 and the drill bit fixture 9 can be rotated by operation, and the rotating drill bit can be used to facilitate the drilling of the workpiece 11. The driving motor 5 can make the first movable cabinet 6 and the second movable cabinet 7 through transmission. Close to or away from each other, the first movable cabinet 6 and the second movable cabinet 7 are close to or away from each other. The rotating rod 8 and the drill bit fixture 9 can make the two drill bits close to each other or away from each other, so that it is convenient to control the drilling depth of the drill bit. ;

The operation of the rotary motor 17 drives the drive rod 15 at the end of its output shaft to rotate, and the drive rod 15 rotates through the spline 23 in the flower groove 22 to drive the driving wheel 14 to rotate, and the driving wheel 14 rotates through the synchronous belt 13 Drive the driven wheel 12 Rotation, the driven wheel 12 can drive the drill bit fixture 9 and the drill bit to rotate through the rotation rod 8, which is convenient for drilling processing. The driving wheel 14 can also freely move left and right on the driving rod 15, which is convenient for adjusting the position of the driving wheel 14;

The operation of the drive motor 5 drives the threaded rod 2 on the top of its output shaft to rotate, and the rotation of the threaded rod 2 can make the first nut 3 and the second nut 4 move in the opposite direction through the first thread and the second thread whose outer wall rotates in opposite directions. approaching or moving away from each other, the first nut 3 and the second nut 4 approaching or moving away from each other drive the first movable cabinet 6 and the second movable cabinet 7 to approach or move away from each other. The cabinet 6 and the second movable cabinet 7 can adjust the distance between the drill bit fixture 9 and the processed part 11 to control the drilling depth of the drill bit;

When the first movable cabinet 6 and the second movable cabinet 7 gradually approach each other, that is, when the drilling depth of the drill bit gradually becomes deeper, the two push rods 24 will also make the two pistons 25 approach each other, and the two pistons 25 will be pressed against each other. The auxiliary liquid between the two, the squeezed auxiliary liquid enters the two side connecting pipes 30 through the vertical pipe 29, and then is sprayed from the nozzle 33 through the elbow 31 and the discharge pipe 32, just sprayed on the drill bit and the processed part 11. It can play an auxiliary role in the drilling process of the drill bit;

When the rotary motor 17 operates by controlling the rotation of the driving rod 15 to drive the bit fixture 9 to rotate, the driving rod 15 will also drive the first pulley 34 to rotate, and the first pulley 34 rotates through the linkage belt 35 to drive the second pulley 36 to rotate, The rotation of the second pulley 36 drives the rotation of the horizontal shaft 37, the rotation of the horizontal shaft 37 drives the rotation of the fan blade 39, and the rotation of the fan blade 39 can generate wind power, so that a negative pressure is generated at the collecting pipe 44, and under the action of the negative pressure, the workpiece is processed. 11 The debris generated during drilling will be sucked by the collection pipe 44, and then enter the bellows 38 and hit the inclined baffle 41. Under the blocking and guiding action of the inclined baffle 41, the debris will fall into the collection box 42, so that the chips generated when the workpiece 11 is machined can be automatically collected.

Claims (10)

1. A machined double-headed coaxial boring and milling processing device, comprising a bottom cabinet (1), characterized in that: the left and right sides of the top of the bottom cabinet (1) are respectively movably provided with a first movable cabinet (6). ) and a second movable cabinet (7), a rotating rod (8) is rotatably arranged in the first movable cabinet (6) and the second movable cabinet (7), and the opposite ends of the two rotating rods (8) A drill bit fixture (9) is fixedly installed; A chuck (10) is arranged between the two drill bit fixtures (9), and a processed part (11) is clamped in the chuck (10), and the drive mechanism arranged in the bottom cabinet (1) can The first movable cabinet (6) and the second movable cabinet (7) are brought close to each other or away from each other at the top of the base cabinet (1). 2. The double-headed coaxial boring and milling machining device for machining according to claim 1, wherein the drive mechanism comprises a threaded rod (2), a first nut (3) and a second nut ( 4), a threaded rod (2) is rotatably arranged in the bottom cabinet (1), and one end of the threaded rod (2) extends to the outside of the bottom cabinet (1) and is fixedly connected with the output shaft of the drive motor (5). ; The left and right sides of the outer wall of the threaded rod (2) are respectively provided with a first thread and a second thread with opposite directions of rotation, and the outer walls of the first thread and the second thread are respectively screwed with a first nut (3) and a second thread. Two nuts (4), the first movable cabinet (6) and the second movable cabinet (7) are respectively fixed and installed on the tops of the first nut (3) and the second nut (4). 3 . The double-headed coaxial boring and milling machining device for machining according to claim 1 , wherein a driven wheel ( 12 ) is fixedly installed on the outer wall of the rotating rod ( 8 ), and the driven wheel The outer wall of (12) is connected with a driving wheel (14) through a timing belt (13), and the driving wheel (14) is rotatably arranged on the first movable cabinet (6) or the second movable cabinet (7) through a supporting bearing (16). Inside; A slot (21) is provided at the center of the driving wheel (14), a drive rod (15) is inserted in the slot (21), and the drive rod (15) is fixedly mounted on the rotating motor (17) The end of the output shaft of the rotary motor (17) is fixedly installed on a fixing plate (18), and the fixing plate (18) is fixedly installed on the side of the bottom cabinet (1). 4 . The double-headed coaxial boring and milling machining device for machining according to claim 3 , wherein the outer wall of the drive rod ( 15 ) is evenly provided with splines ( 23 ), and the slot The inner wall of (21) is uniformly provided with splines (22) coupled with the splines (23). 5. The double-headed coaxial boring and milling machining device for machining according to claim 3, characterized in that: the outer wall of the driving rod (15) is also connected with a fixed bearing (19), and the fixed bearing (19) is fixedly installed on the inner wall of the fixed cabinet (20), and the fixed cabinet (20) is fixedly installed on the top of the bottom cabinet (1). 6 . The double-headed coaxial boring and milling machining device for machining according to claim 5 , wherein the opposite sides of the first movable cabinet (6) and the second movable cabinet (7) are both A push rod (24) is fixedly installed, a piston (25) is fixedly installed on the opposite side of the two push rods (24), and the two pistons (25) are movably arranged in the plug cylinder (26), The plug barrel (26) is fixedly installed on the top of the fixed cabinet (20); The middle part of the outer wall of the plug cylinder (26) is connected with a water tank (28) through a water pumping pipe (27), and the water tank (28) is fixedly installed on the bottom cabinet (1); A vertical pipe (29) is fixedly installed on the top of the plug cylinder (26), and side connecting pipes (30) are penetratingly connected to the left and right sides of the top of the vertical pipe (29). The top ends of the two elbows (31) are all connected with an elbow (31), the tops of the two elbows (31) are all connected with a discharge pipe (32), and the ends of the two discharge pipes (32) are provided with a nozzle ( 33). 7 . The double-headed coaxial boring and milling machining device for machining according to claim 6 , wherein the water intake pipe ( 27 ) is provided with a water inlet check valve, and the vertical pipe ( 29 ) ) is provided with a water outlet check valve. 8 . The double-headed coaxial boring and milling machining device for machining according to claim 5 , wherein a first pulley ( 34 ) is fixedly arranged in the middle of the outer wall of the drive rod ( 15 ). 9 . The outer wall of the first pulley (34) is connected with a second pulley (36) through a linkage belt (35), and a horizontal shaft (37) is fixedly installed at the center of the second pulley (36). The shaft (37) is rotatably arranged in the bellows (38), the top of the bellows (38) is provided with two collecting pipes (44), and the tops of the two collecting pipes (44) are respectively arranged on the chuck (10) the left and right sides; Fan blades (39) are uniformly arranged on the outer wall of the horizontal shaft (37). 9 . The double-headed coaxial boring and milling machining device for machining according to claim 8 , wherein a filter screen ( 40 ) is fixedly installed on the inner wall of the bellows ( 38 ), and the filter screen ( 40) above is provided with an inclined baffle (41); A collection box (42) is fixedly installed on the outer wall of the bellows (38), and the collection box (42) is communicated with the bellows (38) through a communication groove (43). 10 . The double-headed coaxial boring and milling machining device for machining according to claim 9 , wherein the higher end of the oblique baffle plate ( 41 ) is fixedly installed on the inner wall of the bellows ( 38 ). 11 . , the lower end of the inclined baffle plate (41) is located in the communication groove (43).

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