CN111069645B

CN111069645B - High numerical control drilling machine of security with damping function

Info

Publication number: CN111069645B
Application number: CN202010036325.0A
Authority: CN
Inventors: 刘艳伟
Original assignee: Jiangnan Science And Technology Songyang Co ltd
Current assignee: Jiangnan Science And Technology Songyang Co ltd
Priority date: 2020-01-14
Filing date: 2020-01-14
Publication date: 2021-04-27
Anticipated expiration: 2040-01-14
Also published as: CN111069645A

Abstract

The invention relates to a high-safety numerically-controlled drilling machine with a vibration reduction function, which comprises a base, a main body, a vibration reduction mechanism, a lifting plate, a driving motor, a drilling rod, a protection mechanism and two lifting devices, wherein the protection mechanism comprises a protection plate and two connecting assemblies, each connecting assembly comprises a connecting rod, a limiting plate and a first spring, each vibration reduction mechanism comprises an air bag, a collection assembly and two vibration reduction assemblies, each vibration reduction assembly comprises a first bearing, a lead screw, a ball screw bearing, a torsion spring and a transmission unit, and the high-safety numerically-controlled drilling machine with the vibration reduction function can avoid debris from splashing around through the protection mechanism, so that the safety of equipment is improved, the vibration reduction and buffering function of the equipment is realized through the vibration reduction mechanism, and the influence on the punching precision due to overlarge shaking of.

Description

High numerical control drilling machine of security with damping function

Technical Field

The invention relates to the field of numerical control machines, in particular to a numerical control drilling machine with a vibration reduction function and high safety.

Background

The numerical control drilling machine is mainly used for machining of drilling, reaming, tapping and the like. It is a numerically controlled drilling-based hole machining tool, and due to the development of machining centers, most of the numerically controlled drilling machines have been replaced by machining centers. In the automotive, locomotive, shipbuilding, aerospace, engineering machinery industries; especially, the drilling processing of various large parts such as super-long laminated plates, longitudinal beams, structural steel, pipe-shaped parts and the like which are porous and rich in sources and become sea is preferred.

Current numerically-controlled drilling machine can produce the vibration when the work of punching, leads to the equipment to rock from top to bottom to the precision that the influence punched, moreover, current digit control machine tool produces more piece when punching, and the part piece splashes everywhere easily, has increased the piece and has spattered the probability on one's body of user, causes the threat to user's personal safety, has reduced the practicality of current digit control machine tool.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: in order to overcome the defects of the prior art, the numerical control drilling machine with the vibration reduction function and high safety is provided.

The technical scheme adopted by the invention for solving the technical problems is as follows: a high-safety numerically-controlled drilling machine with a vibration reduction function comprises a base, a main body, a vibration reduction mechanism, a lifting plate, a driving motor, a drill rod, a protection mechanism and two lifting devices, wherein the main body is arranged above the base through the vibration reduction mechanism;

the protection mechanism comprises a protection plate and two connecting components, the horizontal section of the protection plate is in a shape of a square, the drill rod is arranged in the protection plate, the two connecting components are respectively arranged on two sides of the protection plate, two small holes are formed in the lifting plate, and the small holes correspond to the connecting components one by one;

the connecting assembly comprises a connecting rod, a limiting plate and a first spring, one end of the connecting rod is fixedly connected with the protecting plate, the other end of the connecting rod penetrates through the small hole to be fixedly connected with the limiting plate, the connecting rod is matched with the small hole, and two ends of the first spring are respectively connected with the upper part of the lifting plate and the limiting plate;

the vibration reduction mechanism comprises an air bag, a collection assembly and two vibration reduction assemblies, the air bag is fixed above the base, the lower part of the main body is abutted against the upper part of the air bag, the two vibration reduction assemblies are respectively arranged at two sides above the base, two through holes are arranged below the main body, the through holes correspond to the vibration reduction assemblies one by one, the collection assembly is arranged at the top in the main body, and the vibration reduction assemblies are connected with the collection assembly;

the damping subassembly includes first bearing, lead screw, ball bearing, torsion spring and drive unit, the top at the base is fixed to first bearing, the one end of lead screw and the inner circle fixed connection of first bearing, the other end of lead screw passes the through-hole setting in the inside of main part, the other end of lead screw passes through drive unit and is connected with the collection subassembly, the inner wall fixed connection of ball bearing's outer lane and through-hole, ball bearing's the junction with the lead screw is equipped with the screw thread that matches with the lead screw, torsion spring's both ends are connected with the top and the lead screw of base respectively.

Preferably, in order to collect the piece, the collection subassembly is including collecting box, filter screen, the unit of bleeding, two collection units and two first hoses, the unit of bleeding sets up the top in the main part, collect the top that the box was fixed at the lifter plate, the inside at the box is fixed to the filter screen, and two collection units set up respectively in the both sides of collecting the box, the collection unit includes suction nozzle and second hose, the suction nozzle is fixed on the inner wall of the one side of guard plate that is close to the drilling rod, the suction nozzle passes through the second hose and communicates with the below of collecting the box, two first hoses respectively with the both sides intercommunication of the top of collecting the box, the other end and the unit of bleeding of first hose are connected.

As preferred, in order to realize the function of bleeding, the unit of bleeding includes box, outlet duct, piston and two second springs of bleeding, the top at the main part is fixed to the box of bleeding, the piston sets up the inside at the box of bleeding, the piston is connected with the inner wall sealing of the box of bleeding, the box and the outlet duct intercommunication of bleeding, the one end of collecting the box with bleeding the box intercommunication of keeping away from of first hose, two second springs set up the both ends in the below of piston respectively, the both ends of second spring are connected with the below of piston and the bottom in the box of bleeding respectively.

Preferably, in order to control the one-way circulation of air, check valves are arranged in the first hose and the air outlet pipe, and the check valves are electrically connected with the PLC.

Preferably, in order to limit the moving direction of the piston, the air extraction unit further comprises a bracket, the bracket is U-shaped, two through holes are formed below the air extraction box, and two ends of the bracket respectively penetrate through the two through holes to be fixedly connected with the lower portion of the piston.

Preferably, in order to drive the piston to move, the transmission unit comprises a rotary table and pull wires, the rotary table is fixedly connected with one end, far away from the first bearing, of the screw rod, one end of each pull wire is wound on the rotary table, two circular holes are formed in the lower portion of the air exhaust box and correspond to the pull wires one to one, and the other end of each pull wire penetrates through the circular holes and is fixedly connected with the lower portion of the piston.

Preferably, in order to change the direction of the pull wire, the transmission unit further comprises a fixed pulley, the fixed pulley is fixed below the air exhaust box, and one end of the pull wire, which is far away from the turntable, is fixedly connected with the piston by passing through the fixed pulley.

Preferably, in order to prolong the service life of the stay wire, the stay wire is made of nylon.

Preferably, the screw is coated with grease in order to make the ball screw bearing move smoothly.

Preferably, the horizontal cross-sectional shape of the aperture is square so that the link does not rotate when moved.

The numerical control drilling machine with the vibration reduction function and high safety has the advantages that the protective mechanism can prevent scraps from splashing around, so that the safety of equipment is improved, compared with the existing protective mechanism, the protective mechanism can also fix a workpiece, the workpiece is prevented from shifting during punching, so that the punching precision is improved, the vibration reduction and buffering function of the equipment is realized through the vibration reduction mechanism, the punching precision is prevented from being influenced due to overlarge shaking of the equipment, compared with the existing vibration reduction mechanism, the vibration reduction mechanism also realizes the function of collecting the scraps, manual cleaning is not needed, and the convenience in cleaning is improved.

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a schematic structural diagram of a high-safety numerically controlled drilling machine with a vibration reduction function according to the present invention;

FIG. 2 is an enlarged view of portion A of FIG. 1;

FIG. 3 is an enlarged view of portion B of FIG. 1;

FIG. 4 is a schematic view of a connecting structure of a connecting rod and a lifting plate of the numerically-controlled drilling machine with vibration reduction function and high safety;

in the figure: 1. the automatic drilling machine comprises a base, a main body, a lifting device, a lifting plate, a driving motor, a drill rod, a control plate, a protection plate, a connecting rod, a limiting plate, a first spring, a gas bag, a ball screw bearing, a screw rod, a torsion spring, a rotating disc, a pull wire, a piston, a second spring, a gas suction box, a gas outlet pipe, a first hose, a collecting box, a filter screen, a suction nozzle, a second hose, a support and a fixed pulley, wherein the main body is 2, the lifting device is 3, the lifting plate is 4, the driving motor is 5, the drill rod is 6, the control plate is 7, the protection plate is 8, the connecting rod is 9, the limiting plate is 10, the first.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.

As shown in fig. 1, the high-safety numerically controlled drilling machine with the vibration reduction function comprises a base 1, a main body 2, a vibration reduction mechanism, a lifting plate 4, a driving motor 5, a drill rod 6, a protection mechanism and two lifting devices 3, wherein the main body 2 is arranged above the base 1 through the vibration reduction mechanism, the two lifting devices 3 are respectively arranged on two sides above the main body 2, two ends of the lifting plate 4 are respectively connected with the two lifting devices 3, the driving motor 5 is fixed below the lifting plate 4, the driving motor 5 is in transmission connection with the drill rod 6, the protection mechanism is arranged below the lifting plate 4, a control board 7 is fixed on the main body 2, a PLC is arranged in the control board 7, and the driving motor 5 is electrically connected with the PLC;

a PLC, i.e., a programmable logic controller, which employs a programmable memory for storing therein a program, executing instructions for user-oriented operations such as logic operation, sequence control, timing, counting, and arithmetic operation, and controlling various types of machines or production processes through digital or analog input/output, is essentially a computer dedicated for industrial control, has a hardware structure substantially the same as that of a microcomputer, and is generally used for data processing and instruction reception and output for realizing central control.

This high numerically-controlled drilling machine of security with damping function passes through protection machanism, can avoid the piece to spatter all around to improve the security of equipment, through damping mechanism, realized the function to equipment damping buffering, avoid equipment to rock too big and influence the precision of punching.

As shown in fig. 1, the protection mechanism includes a protection plate 8 and two connection assemblies, the horizontal cross section of the protection plate 8 is in a shape of a square, the drill rod 6 is arranged in the protection plate 8, the two connection assemblies are respectively arranged on two sides of the protection plate 8, and the lifting plate 4 is provided with two small holes which are in one-to-one correspondence with the connection assemblies;

the connecting assembly comprises a connecting rod 9, a limiting plate 10 and a first spring 11, one end of the connecting rod 9 is fixedly connected with the protection plate 8, the other end of the connecting rod 9 penetrates through a small hole to be fixedly connected with the limiting plate 10, the connecting rod 9 is matched with the small hole, and two ends of the first spring 11 are respectively connected with the upper part of the lifting plate 4 and the limiting plate 10;

when punching is carried out, the lifting device 3 is controlled to work, the lifting plate 4 is driven to move towards the direction close to the main body 2, the drill rod 6 and the protection plate 8 move downwards, the protection plate 8 is abutted against the upper surface of a workpiece, when the workpiece is to be punched, the driving motor 5 and the lifting device 3 are simultaneously controlled to work, the drill rod 6 is driven to continue to move downwards and rotate, so that the drilling function is realized, fragments generated when the drill rod 6 drills are blocked through the shielding plate 8, the fragments are prevented from splashing, and the safety of the equipment is improved, when the lifting plate 4 continues to move downwards, the protection plate 8 is abutted against the workpiece, so that the connecting rod 9 and the lifting plate 4 relatively move, the first spring 11 is stretched, a force towards the direction close to the lifting plate 4 is given to the limiting plate 10 through the restoring force of the first spring 11, and a force towards the direction close to the workpiece is given to the protection plate 8 through the connecting rod 9, thereby make guard plate 8 can firmly support and lean on the work piece surface to carry out fixed work to the work piece, the work piece position takes place the skew when avoiding punching, thereby improved the precision of punching.

As shown in fig. 1-3, the vibration damping mechanism includes an air bag 12, a collecting assembly and two vibration damping assemblies, the air bag 12 is fixed above the base 1, the lower part of the main body 2 abuts against the upper part of the air bag 12, the two vibration damping assemblies are respectively arranged at two sides above the base 1, two through holes are arranged below the main body 2, the through holes correspond to the vibration damping assemblies one by one, the collecting assembly is arranged at the top in the main body 2, and the vibration damping assemblies are connected with the collecting assembly;

damping subassembly includes first bearing, lead screw 14, ball bearing 13, torsion spring 15 and drive unit, the top at base 1 is fixed to first bearing, the one end of lead screw 14 and the inner circle fixed connection of first bearing, the other end of lead screw 14 passes the through-hole and sets up the inside at main part 2, the other end of lead screw 14 passes through drive unit and is connected with the collection subassembly, the outer lane of ball bearing 13 and the inner wall fixed connection of through-hole, ball bearing 13 and lead screw 14 junction be equipped with the screw thread that matches with lead screw 14, torsion spring 15's both ends are connected with the top and the lead screw 14 of base 1 respectively.

When equipment carries out the work of punching, can lead to main part 2 to rock from top to bottom, when main part 2 is the lapse, extrude gasbag 12, drive ball bearing 13 along lead screw 14 lapse simultaneously, make lead screw 14 rotate, torsion spring 15 takes place deformation simultaneously, restoring force through torsion spring 15, make lead screw 14 antiport, the restoring force through gasbag 12 simultaneously, thereby give 2 ascending buffers power of main part, the function of damping buffering has been realized, main part 2 rocks too greatly and influences the precision of punching when avoiding punching, in the time of lead screw 14 pivoted, can also drive the work of drive unit, make the work of cell phone unit, thereby realize collecting clastic function, need not artificial clearance, the convenience of clearance has been improved.

Preferably, in order to collect debris, the collection assembly includes a collection box 23, a filter screen 24, an air suction unit, two collection units and two first hoses 22, the air suction unit is disposed at the top of the main body 2, the collection box 23 is fixed above the lifting plate 4, the filter screen 24 is fixed inside the collection box 23, the two collection units are disposed at both sides of the collection box 23, the collection unit includes a suction nozzle 25 and a second hose 26, the suction nozzle 25 is fixed on the inner wall of the side of the protection plate 8 close to the drill rod 6, the suction nozzle 25 is communicated with the lower side of the collection box 23 through the second hose 26, the two first hoses 22 are communicated with both sides of the upper side of the collection box 23, and the other end of the first hose 22 is connected with the air suction unit.

Preferably, in order to realize the air suction function, the air suction unit includes an air suction box 20, an air outlet pipe 21, a piston 18 and two second springs 19, the air suction box 20 is fixed on the top of the main body 2, the piston 18 is arranged inside the air suction box 20, the piston 18 is hermetically connected with the inner wall of the air suction box 20, the air suction box 20 is communicated with the air outlet pipe 21, one end of the first hose 22, which is far away from the collection box 23, is communicated with the air suction box 20, the two second springs 19 are respectively arranged at two ends of the lower part of the piston 18, and two ends of the second springs 19 are respectively connected with the lower part of the piston 18 and the bottom of the air suction box 20.

Preferably, in order to control the one-way circulation of air, a one-way valve is arranged in each of the first hose 22 and the air outlet pipe 21, and the one-way valve is electrically connected with the PLC.

Preferably, in order to drive the piston 18 to move, the transmission unit includes a rotary table 16 and a pull wire 17, the rotary table 16 is fixedly connected with one end of the screw rod 14, which is far away from the first bearing, one end of the pull wire 17 is wound on the rotary table 16, two circular holes are arranged below the air exhaust box 20, the circular holes correspond to the pull wires 17 one by one, and the other end of the pull wire 17 penetrates through the circular holes to be fixedly connected with the lower part of the piston 18.

When carrying out the damping during operation, lead screw 14 rotates, it rotates to drive carousel 16, tighten up pull wire 17, it removes to the direction that is close to the round hole to drive piston 18, compress second spring 19 simultaneously, make the inside of collecting the leading-in box 20 of taking out air of box 23 through first hose 22, make the atmospheric pressure in the box 23 of collecting reduce, thereby the piece that produces when being convenient for the suction nozzle 25 will punch passes through the inside of the leading-in box 23 of collecting of second hose 26, through blockking of filter screen 24, thereby make the piece collect in filter screen 24's below, thereby clastic function has been realized, need not artificial clearance, the convenience of clearance has been improved.

Preferably, in order to limit the moving direction of the piston 18, the air extracting unit further includes a bracket 27, the bracket 27 is U-shaped, two through holes are formed below the air extracting box 20, and two ends of the bracket 27 are fixedly connected with the lower part of the piston 18 through the two through holes respectively.

By providing the bracket 27, the moving direction of the piston 18 is restricted so that the piston 18 does not rotate when moving, thereby improving the stability when the piston 18 moves.

Preferably, in order to change the direction of the pull wire 17, the transmission unit further comprises a fixed pulley 28, the fixed pulley 28 is fixed below the air exhaust box 20, and one end of the pull wire 17 far away from the turntable 16 is fixedly connected with the piston 18 by passing through the fixed pulley 28.

By arranging the fixed pulley 28, the piston 18 can be driven to move downwards when the rotary disc 16 tightens the pull wire 17, and the function of changing the direction of the pull wire 17 is realized.

Preferably, in order to prolong the service life of the stay wire 17, the stay wire 17 is made of nylon.

Preferably, in order to make the ball screw bearing 13 move smoothly, the screw 14 is coated with grease, so that the friction between the screw 14 and the ball screw bearing 13 is reduced, and the ball screw bearing 13 moves more smoothly along the screw 14.

As shown in fig. 4, the horizontal cross-sectional shape of the small hole is a square.

When punching is carried out, the lifting device 3 is controlled to work, the lifting plate 4 is driven to move towards the direction close to the main body 2, the drill rod 6 and the protection plate 8 move downwards, the protection plate 8 is abutted against the upper surface of a workpiece, when the workpiece is to be punched, the driving motor 5 and the lifting device 3 are simultaneously controlled to work, the drill rod 6 is driven to continue to move downwards and rotate, so that the drilling function is realized, fragments generated when the drill rod 6 drills are blocked through the shielding plate 8, the fragments are prevented from splashing, and the safety of the equipment is improved, when the lifting plate 4 continues to move downwards, the protection plate 8 is abutted against the workpiece, so that the connecting rod 9 and the lifting plate 4 relatively move, the first spring 11 is stretched, a force towards the direction close to the lifting plate 4 is given to the limiting plate 10 through the restoring force of the first spring 11, and a force towards the direction close to the workpiece is given to the protection plate 8 through the connecting rod 9, thereby make guard plate 8 can firmly support and lean on the work piece surface to carry out fixed work to the work piece, the work piece position takes place the skew when avoiding punching, thereby improved the precision of punching. When the device is used for punching, the main body 2 can be caused to shake up and down, when the main body 2 moves downwards, the air bag 12 is extruded, the ball screw bearing 13 is driven to move downwards along the screw rod 14, the screw rod 14 rotates, the torsion spring 15 deforms, the screw rod 14 reversely rotates through the restoring force of the torsion spring 15, meanwhile, the restoring force of the air bag 12 is utilized, an upward buffering force is provided for the main body 2, the function of vibration reduction and buffering is realized, the main body 2 is prevented from shaking too much to influence the punching precision when punching is performed, the screw rod 14 rotates, meanwhile, the rotary table 16 is driven to rotate, the pull wire 17 is tightened, the piston 18 is driven to move towards the direction close to the round hole, the second spring 19 is compressed, the air in the collection box 23 is led into the inside of the air suction box 20 through the first hose 22, the air pressure in the collection box 23 is reduced, and therefore, the suction nozzle 25 can conveniently lead the scraps generated during punching into the collection box 23, through stopping of filter screen 24 to make the piece collect in filter screen 24's below, thereby realized clastic function, need not artificial clearance, improved the convenience of clearance.

Compared with the prior art, this high numerically-controlled drilling machine of security with damping function passes through protection machanism, can avoid the piece to spatter all around, thereby the security of equipment has been improved, compare with current protection machanism, this protection machanism can also fix the work piece, work piece offset when avoiding punching, thereby the precision of punching has been improved, through damping mechanism, the function to equipment damping buffering has been realized, avoid equipment to rock too big and influence the precision of punching, compare with current damping mechanism, this damping mechanism has still realized collecting clastic function, need not artificial clearance, the convenience of clearance has been improved.

In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. A high-safety numerical control drilling machine with a vibration reduction function is characterized by comprising a base (1), a main body (2), a vibration reduction mechanism, a lifting plate (4), a driving motor (5), a drill rod (6), a protection mechanism and two lifting devices (3), the main body (2) is arranged above the base (1) through a vibration damping mechanism, the two lifting devices (3) are respectively arranged at two sides above the main body (2), two ends of the lifting plate (4) are respectively connected with the two lifting devices (3), the driving motor (5) is fixed below the lifting plate (4), the driving motor (5) is in transmission connection with the drill rod (6), the protection mechanism is arranged below the lifting plate (4), the main body (2) is fixed with a control plate (7), a PLC is arranged in the control panel (7), and the driving motor (5) is electrically connected with the PLC;

the protection mechanism comprises a protection plate (8) and two connecting components, the horizontal section of the protection plate (8) is in a shape of a square, the drill rod (6) is arranged in the protection plate (8), the two connecting components are respectively arranged on two sides of the protection plate (8), two small holes are formed in the lifting plate (4), and the small holes correspond to the connecting components one to one;

the connecting assembly comprises a connecting rod (9), a limiting plate (10) and a first spring (11), one end of the connecting rod (9) is fixedly connected with the protecting plate (8), the other end of the connecting rod (9) penetrates through a small hole to be fixedly connected with the limiting plate (10), the connecting rod (9) is matched with the small hole, and two ends of the first spring (11) are respectively connected with the upper part of the lifting plate (4) and the limiting plate (10);

the vibration reduction mechanism comprises an air bag (12), a collection assembly and two vibration reduction assemblies, wherein the air bag (12) is fixed above the base (1), the lower part of the main body (2) is abutted against the upper part of the air bag (12), the two vibration reduction assemblies are respectively arranged on two sides above the base (1), two through holes are arranged below the main body (2), the through holes correspond to the vibration reduction assemblies one by one, the collection assembly is arranged at the top in the main body (2), and the vibration reduction assemblies are connected with the collection assembly;

the vibration reduction assembly comprises a first bearing, a screw rod (14), a ball screw bearing (13), a torsion spring (15) and a transmission unit, the first bearing is fixed above the base (1), one end of the screw rod (14) is fixedly connected with an inner ring of the first bearing, the other end of the screw rod (14) penetrates through a through hole to be arranged inside the main body (2), the other end of the screw rod (14) is connected with the collection assembly through the transmission unit, an outer ring of the ball screw bearing (13) is fixedly connected with an inner wall of the through hole, a thread matched with the screw rod (14) is arranged at the connection part of the ball screw bearing (13) and the screw rod (14), and two ends of the torsion spring (15) are respectively connected with the upper part of the base (1) and the screw rod (14);

the collecting assembly comprises a collecting box (23), a filter screen (24), an air extracting unit, two collecting units and two first hoses (22), the air extracting unit is arranged at the top of the main body (2), the collecting box (23) is fixed above the lifting plate (4), the filter screen (24) is fixed inside the collecting box (23), the two collecting units are respectively arranged at two sides of the collecting box (23), each collecting unit comprises a suction nozzle (25) and a second hose (26), the suction nozzle (25) is fixed on the inner wall of one side, close to the drill rod (6), of the protecting plate (8), the suction nozzle (25) is communicated with the lower portion of the collecting box (23) through the second hose (26), the two first hoses (22) are respectively communicated with two sides of the upper portion of the collecting box (23), and the other end of the first hose (22) is connected with the air extracting unit;

the air extraction unit comprises an air extraction box (20), an air outlet pipe (21), a piston (18) and two second springs (19), the air extraction box (20) is fixed at the top in the main body (2), the piston (18) is arranged inside the air extraction box (20), the piston (18) is hermetically connected with the inner wall of the air extraction box (20), the air extraction box (20) is communicated with the air outlet pipe (21), one end, far away from the collection box (23), of the first hose (22) is communicated with the air extraction box (20), the two second springs (19) are respectively arranged at two ends below the piston (18), and two ends of the second springs (19) are respectively connected with the lower part of the piston (18) and the bottom in the air extraction box (20);

one-way valves are arranged in the first hose (22) and the air outlet pipe (21) and are electrically connected with the PLC;

the air extraction unit further comprises a support (27), the support (27) is U-shaped, two through holes are formed below the air extraction box (20), and two ends of the support (27) penetrate through the two through holes respectively and are fixedly connected with the lower portion of the piston (18);

the transmission unit comprises a rotary table (16) and a pull wire (17), the rotary table (16) is fixedly connected with one end, far away from a first bearing, of the screw rod (14), one end of the pull wire (17) is wound on the rotary table (16), two round holes are arranged below the air exhaust box (20), the round holes correspond to the pull wire (17) in a one-to-one mode, and the other end of the pull wire (17) penetrates through the round holes and is fixedly connected with the lower portion of the piston (18).

2. The high-safety numerically controlled drilling machine with the vibration damping function as claimed in claim 1, wherein the transmission unit further comprises a fixed pulley (28), the fixed pulley (28) is fixed below the air suction box (20), and one end of the pull wire (17) far away from the rotary table (16) is fixedly connected with the piston (18) by passing around the fixed pulley (28).

3. The safe numerically controlled drilling machine with vibration reduction function according to claim 2, wherein the stay (17) is made of nylon.

4. The high-safety numerically controlled drilling machine with vibration damping function according to claim 1, wherein the screw (14) is coated with grease.

5. A highly safety-equipped numerically controlled drilling machine with vibration damping function according to claim 1, wherein the horizontal cross-sectional shape of the small hole is a square shape.