CN114346332A

CN114346332A - Automatic tapping machine for steel

Info

Publication number: CN114346332A
Application number: CN202210049281.4A
Authority: CN
Inventors: 曹军芳
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-01-17
Filing date: 2022-01-17
Publication date: 2022-04-15

Abstract

The invention relates to the technical field of automatic steel processing, and discloses an automatic steel tapping machine which comprises a positioning sleeve, wherein two symmetrical check valves are fixedly sleeved on the positioning sleeve, two symmetrical check valves IV are fixedly sleeved on the positioning sleeve, a gas collecting box is fixedly sleeved at the bottom of the outer side of the positioning sleeve, a liquid storage sleeve is fixedly sleeved in the positioning sleeve, and two symmetrical movable grooves are formed in the inner side of the liquid storage sleeve. According to the invention, through the designed tapping screw, the valve core and the liquid outlet channel, the liquid storage sleeve enables the valve core to be lifted by steel extrusion to open the liquid outlet channel when the tapping screw performs tapping operation, so that cooling liquid is sprayed out of the liquid outlet channel, the cooling liquid enters into tapping threads along with the tapping screw, close-range cooling and lubrication are achieved, meanwhile, the surface layer of waste chips is covered with the cooling liquid to push the waste chips to be rapidly discharged, and the problems of friction damage to the threaded holes and waste chip accumulation blockage when the waste chips are upwards discharged out of the threaded holes are avoided.

Description

Automatic tapping machine for steel

Technical Field

The invention relates to the technical field of automatic processing of steel, in particular to an automatic tapping machine for steel.

Background

The automatic tapping machine drives a tapping drill rod to move synchronously by controlling continuous circulation of forward rotation, reverse rotation, forward rotation, reverse rotation … … and unidirectional circulation of forward rotation, reverse rotation and stopping of a special motor, processes a machined part, and performs tapping, thread-threading and other operations.

The existing automatic steel tapping machine has the following defects in the actual use process: because the tapping drill rod needs to move at a high speed when working, a large amount of heat is generated when the tap cuts a workpiece, and even sintering and cutting curling phenomena occur in severe cases, generally, a cooling liquid needs to be continuously injected into a gap between the tapping drill rod and the workpiece when tapping is carried out, so that a lubricating effect is achieved, friction between the workpiece to be machined and a tool bit is reduced, heat generation is reduced, and the surface smoothness of the workpiece is improved, but the conventional tapping machine only sprays the cooling liquid on the surface of a tapping rotating rod contacting steel, so that the tapping drill rod entering the steel cannot be sufficiently cooled, the tapped thread cannot be directly cooled by the cooling liquid, and the tapping drill rod can discharge cut chips from the upper part and the turning direction of the chips is upward, the chips are greatly influenced by cutting force and have high temperature, and in the process of discharging from the inner part to the outer part, the drill bit is easily scratched to finish the surface after being machined under the influence of heat and friction force, and chips between the periphery of the drill bit and the inner wall of a tapping hole cannot be timely discharged along with the deepening of tapping, so that part of chips are accumulated in the drill bit, the drill bit is more seriously abraded, and tapped thread teeth are easily damaged.

Disclosure of Invention

Aiming at the defects of the prior steel tapping machine in the use process, the invention provides an automatic steel tapping machine which is provided with a cooling liquid that is ejected from the bottom of a drill rod and directly acts on a tapping point, the cooling liquid provides a protective layer for scraps and a processed threaded hole, the friction damage is avoided, the coolant liquid pushes the scraps to be rapidly discharged, the rotation of a tapping screw rod enables an eccentric wheel to intermittently extrude an arc-shaped bulge, the supplement and pressurization of the coolant liquid are completed, an extrusion air bag enables gas to be compressed, a liquid collection box is deformed to accelerate the flowing of the coolant liquid, the liquid collecting box deforms to open the one-way valve IV, so that the compressed gas in the gas collecting box rushes out the cooling liquid and the sweeps in the threaded holes when entering the gas collecting box for storage and withdrawal, and the technical problems that the cooling liquid cannot directly contact with heating points, the sweeps are difficult to discharge and the sweeps are discharged to cause friction damage in the background technology are solved.

The invention provides the following technical scheme: an automatic steel tapping machine comprises a positioning sleeve, wherein two symmetrical check valves are fixedly sleeved on the positioning sleeve, two symmetrical check valves IV are fixedly sleeved on the positioning sleeve, a gas collecting box is fixedly sleeved at the bottom of the outer side of the positioning sleeve, a liquid storage sleeve is fixedly sleeved in the positioning sleeve, two symmetrical movable grooves are formed in the inner side of the liquid storage sleeve, a check valve II is fixedly sleeved at the bottom end of each movable groove, a pressure receiving plate is movably sleeved in each movable groove, a check valve III is fixedly sleeved on each pressure receiving plate, an arc-shaped bulge is fixedly connected to the bottom center of one end of each pressure receiving plate, which is far away from each movable groove, a connecting rod is fixedly connected to the center of one end of each movable groove, an extrusion block is fixedly connected to one end of each connecting rod, an air bag is fixedly connected to one end of the positioning sleeve, and a communicating pipe I is fixedly connected to an opening of the air bag, the other end fixedly connected with transition case of communicating pipe I, the fixed joint has the polybox in the inner chamber of transition case, the one end opening fixedly connected with communicating pipe II of polybox, the tapping screw has been cup jointed in the center activity of position sleeve, the middle part fixedly connected with eccentric wheel of tapping screw, central channel has been seted up at the bottom center of tapping screw, the striking air flue of two symmetries is seted up to the bottom of tapping screw, the play liquid passageway of two symmetries is seted up to the bottom of tapping screw, the case has been cup jointed in the bottom activity of central channel.

Preferably, the locating sleeve is fixedly connected to the bottom end of the frame.

Preferably, the inner cavity of the liquid storage sleeve forms a liquid storage cavity, cooling liquid is filled in the liquid storage cavity, and a storage cavity is formed in the space between the liquid storage sleeve and the positioning sleeve.

Preferably, the arc arch is the design of smooth circular arc, the one end of connecting rod runs through the stock solution cover to putting the thing intracavity, the winding has the spring on the connecting rod, the one end of spring just is the one end fixed connection of stock solution cover with the extrusion piece, the other end and the lateral wall fixed connection of stock solution cover.

Preferably, an opening at one end of the air bag is fixedly connected with the inner cavity wall of the positioning sleeve, and the opening of the air bag fixedly connected with the positioning sleeve is communicated with the outside through a one-way valve.

Preferably, the transition box is fixedly connected with the inner wall of the positioning sleeve, the transition box is divided into two non-communicated inner cavities from the center, the two inner cavities in the transition box are respectively communicated with the two communicating pipes I, an opening at one end of the liquid collecting box is communicated with the cooling liquid storage device, the liquid collecting box is made of rubber, only one end, the bottom end and the left end of the liquid collecting box, which are opposite to the center of the transition box, are fixedly connected with the transition box, one end, the upper end and the right end, which are opposite to the inner wall of the positioning sleeve, of the liquid collecting box are in a free state, the right end, which is opposite to the inner wall of the positioning sleeve, of the liquid collecting box is attached to the inner wall of the positioning sleeve, the one-way valve IV is located at the attachment position, and the other end of the communicating pipe II is fixedly connected with the one-way valve II which is farthest away.

Preferably, the top end of the tapping screw is fixedly connected with the output end of the motor, the eccentric wheel and the arc-shaped protrusion are positioned on the same straight line, a through hole is formed in the tapping screw, the central channel is communicated with the liquid storage cavity through the through hole, the bottom opening of the impact air channel is communicated with the liquid outlet channel, the liquid outlet channel is designed in an inclined upward direction, a reciprocating groove is formed in the bottom of the central channel, the top of the valve core is T-shaped and movably sleeved in the reciprocating groove, a communicating hole is formed in the bottom of the valve core, and the bottom of the valve core penetrates through the bottom of the tapping screw.

Preferably, the gas collecting tank is communicated with the transition tank through a one-way valve IV, an air injection channel is formed in the bottom of the positioning sleeve, an opening at one end of the air injection channel is communicated with the gas collecting tank, the air injection channel is movably sleeved on the outer side of the tapping screw in a circular ring shape when reaching the outer side of the tapping screw and is communicated with an opening at the top end of the impact air channel, an electric control valve is fixedly sleeved in the air injection channel, and the electric control valve is in signal connection with an intelligent control mechanism.

The invention has the following beneficial effects:

1. according to the invention, through the designed tapping screw, the valve core and the liquid outlet channel, the liquid storage sleeve enables the valve core to be lifted by steel extrusion to open the liquid outlet channel when the tapping screw performs tapping operation, so that cooling liquid is sprayed out of the liquid outlet channel, the cooling liquid enters into tapping threads along with the tapping screw, close-range cooling and lubrication are achieved, meanwhile, the surface layer of waste chips is covered with the cooling liquid to push the waste chips to be rapidly discharged, and the problems of friction damage to the threaded holes and waste chip accumulation blockage when the waste chips are upwards discharged out of the threaded holes are avoided.

2. The invention uses the designed liquid storage sleeve, tapping screw, eccentric wheel and arc-shaped bulge to lead the eccentric wheel to intermittently extrude two arc-shaped bulges when the tapping screw carries out forward tapping, one pressure-receiving plate extrudes and supplements the cooling liquid in the movable groove into the liquid storage cavity, the other pressure-receiving plate is driven by the spring to reset, the cooling liquid in the liquid storage cavity is pushed to be introduced into the tapping screw for cooling treatment, and an extra force is provided for the cooling liquid to improve the impact force, and the movable groove with enlarged space sucks new cooling liquid under the pressure difference, and simultaneously, the air bag can be compressed by the extrusion block when the pressure-receiving plate extrudes the space of the movable groove, the air in the air bag is pressed into the transition box to increase the air pressure in the transition box, thereby compressing the liquid collecting box and accelerating the supplementing speed of the cooling liquid in the movable groove with enlarged space, the problem that coolant cannot be supplemented timely due to the fact that the rotating speed of the eccentric wheel is too high is solved.

3. According to the invention, through the designed eccentric wheel, the arc-shaped bulge, the air bag, the transition box, the gas collection box and the tapping screw, after the air in the air bag is introduced into the transition box to compress the liquid collection box, the air can enter the gas collection box from the check valve IV which is compressed and opened by the liquid collection box, so that a large amount of high-pressure air can be collected in the gas collection box during forward rotation tapping of the tapping screw, when the tapping screw reversely rotates and reverses, the high-pressure air can be sprayed out from the liquid outlet channel through the impact air channel to push residual scraps and cooling liquid in the threaded hole to be discharged, and the problem of inconvenience in subsequent cleaning caused by excessive residues and cooling liquid remaining in the threaded hole is avoided.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the transition box structure of the present invention;

FIG. 3 is a schematic view of the structure of the air bag of the present invention when compressed;

FIG. 4 is a schematic view of the tapping screw of the present invention.

In the figure: 1. a positioning sleeve; 2. a liquid storage sleeve; 3. a liquid storage cavity; 4. a storage cavity; 5. a movable groove; 6. a pressure receiving plate; 7. an arc-shaped bulge; 8. a connecting rod; 9. extruding the block; 10. a spring; 11. an air bag; 12. a one-way valve I; 121. a one-way valve II; 122. a one-way valve III; 123. a one-way valve IV; 13. a gas collection tank; 14. a communicating pipe I; 15. a transition box; 16. a liquid collecting tank; 17. a communicating pipe II; 18. tapping a screw rod; 181. a reciprocating groove; 19. an eccentric wheel; 20. a central channel; 21. impacting the air passage; 22. a liquid outlet channel; 23. a valve core; 231. a communicating hole; 24. an air injection passage; 241. an electrically controlled valve.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-3, an automatic tapping machine for steel comprises a positioning sleeve 1, the positioning sleeve 1 is fixedly connected to the bottom end of a machine frame to enable the machine frame to drive the positioning sleeve 1 to adjust the position, two symmetrical check valves I12 are fixedly sleeved on the positioning sleeve 1, two symmetrical check valves IV123 are fixedly sleeved on the positioning sleeve 1, a liquid storage sleeve 2 is fixedly sleeved in the positioning sleeve 1, a liquid storage cavity 3 is formed in the inner cavity of the liquid storage sleeve 2, cooling liquid is filled in the liquid storage cavity 3, a storage cavity 4 is formed in the space between the liquid storage sleeve 2 and the positioning sleeve 1, two symmetrical movable grooves 5 are formed in the inner side of the liquid storage sleeve 2, a check valve II121 is fixedly sleeved at the bottom ends of the movable grooves 5, a pressure-bearing plate 6 is movably sleeved in the movable grooves 5, a check valve III122 is fixedly sleeved on the pressure-bearing plate 6, an arc-shaped protrusion 7 is fixedly connected to the bottom center of one end of the pressure-bearing plate 6, which deviates from the movable grooves 5, the arc-shaped bulges 7 are designed to be smooth arcs, so that the tapping screw 18 can smoothly extrude the arc-shaped bulges 7 by synchronous rotation of the eccentric wheel 19 when in forward transmission or reverse rotation, the problem that the arc-shaped bulges 7 obstruct the rotation of the eccentric wheel 19 can not occur, the pressure-receiving plate 6 is fixedly connected with the connecting rod 8 just opposite to the center of one end of the movable groove 5, one end of the connecting rod 8 penetrates through the liquid storage sleeve 2 to the object placing cavity 4 and is fixedly connected with the extrusion block 9, the extrusion block 9 is fixedly connected with the spring 10 just opposite to one end of the liquid storage sleeve 2, the other end of the spring 10 is fixedly connected with the outer side wall of the liquid storage sleeve 2, the spring 10 is wound on the connecting rod 8, one end of the extrusion block 9 just opposite to the positioning sleeve 1 is fixedly connected with the air bag 11, so that the eccentric wheel 19 can intermittently impact the two symmetrical arc-shaped bulges 7 when rotating, when one of the arc-shaped bulges 7 is extruded by the eccentric wheel 19, the arc-shaped bulge 7 at the position can be pressed into the movable groove 5 at the position, make the coolant liquid in the movable groove 5 pass through check valve III122 and impress in stock solution chamber 3, receive the board 6 simultaneously and will pass through connecting rod 8, extrusion piece 9 extrusion gasbag 11, another arc arch 7 loses the extrusion of eccentric wheel 19, make the board 6 that receives here move to the inboard under the drive of spring 10 and reset, make receive the board 6 and promote the coolant liquid in the stock solution chamber 3 and get into central channel 20 in, make the coolant liquid blowout carry out the tapping cooling to upwards promote the sweeps and discharge.

Referring to fig. 1-3, an opening at one end of an airbag 11 is fixedly connected with an inner cavity wall of a positioning sleeve 1, the opening fixedly connected with the positioning sleeve 1 and the airbag 11 is communicated with the outside through a one-way valve I12, when a pressing block 9 drives the airbag 11 to expand, outside air can enter the airbag 11 through the one-way valve I12 to supplement the air, an opening at the other end of the airbag 11 is fixedly connected with a communicating pipe I14, the other end of the communicating pipe I14 is fixedly connected with a transition box 15, when the pressing block 9 presses the airbag 11, the air in the airbag 11 can enter the transition box 15 through the communicating pipe I14, the air pressure of an inner cavity pressed by the transition box 15 is increased, a liquid collecting box 16 at the position is compressed, cooling liquid in the liquid collecting box is pressed and accelerated to be introduced into the communicating pipe II17, the cooling liquid is rapidly supplemented into a movable tank 5, meanwhile, the compression of the liquid collecting box 16 enables the one-way valve IV123 in the inner cavity at the position of the transition box 15 not to be blocked any more, the pressed gas is led into the gas collecting box 13 through the one-way valve IV123, when the extrusion block 9 drives the air bag 11 to expand, the outside gas can enter the air bag 11 through the one-way valve I12, when the gas is supplemented, the gas in the transition box 15 can be sucked back into the expanded air bag 11 under the pressure difference, so that the air pressure of the inner cavity at the gas backflow position of the transition box 15 is reduced, the liquid collecting box 16 at the position is expanded and recovered, and the one-way valve IV in the inner cavity at the position is blocked again.

Referring to fig. 2-3, the transition box 15 is fixedly connected with the inner wall of the positioning sleeve 1, the transition box 15 is divided into two non-communicated inner cavities from the center, the two inner cavities in the transition box 15 are respectively communicated with two communicating pipes I14, the inner cavity of the transition box 15 is fixedly sleeved with the liquid collecting box 16, one end opening of the liquid collecting box 16 is communicated with a coolant storage device, so that coolant can continuously pass through the liquid collecting box 16 and enter the movable tank 5, and when the liquid collecting box 16 serves as a transition point, the problem that gas pressed into the transition box 15 cannot extrude the transition box 15 to be deformed due to overlarge volume is avoided, the liquid collecting box 16 is made of rubber, the liquid collecting box 16 is only fixedly connected with the transition box 15 at one end, the bottom end and the left end opposite to the center of the transition box 15, the upper end and the right end opposite to the communicating pipe I14 of the liquid collecting box 16 and the right end opposite to the inner cavity wall of the positioning sleeve 1 are in a free state, the right end of the liquid collecting box 16 opposite to the inner wall of the positioning sleeve 1 is attached to the inner wall, and the one-way valve IV123 is positioned at the joint part, so that the liquid collecting tank 16 can deform, the cooling liquid compressed when the gas is pressed in is quickly introduced into the movable groove 5, and the blocked one-way valve IV123 is opened to ensure that the pressed gas can enter the gas collection box 13, when the air pressure in the transition box 15 is reduced, the liquid collecting box 16 can expand and recover, so as to provide enough space for next extrusion of cooling liquid, and the check valve IV123 is blocked again, so that the opportunity of extruding the liquid collecting tank 16 is provided for next air pressing, one end opening of the liquid collecting tank 16 is fixedly connected with a communicating pipe II17, the other end of the communicating pipe II17 is fixedly connected with the check valve II121 which is farthest away, so that when the air is pressed into one inner cavity of the transition tank 15, the liquid collecting tank 16 is compressed by extrusion, so that the cooling liquid in the liquid collecting tank is quickened to be introduced into the connected communicating pipe II17, and the cooling liquid enters the movable tank 5 with enlarged space under the pressure difference.

Referring to fig. 1-3, a tapping screw 18 is movably sleeved at the center of a positioning sleeve 1, the top end of the tapping screw 18 is fixedly connected with the output end of a motor, an eccentric wheel 19 is fixedly connected with the middle part of the tapping screw 18, the eccentric wheel 19 and the arc-shaped protrusion 7 are in the same straight line, when the eccentric wheel 19 rotates synchronously with the tapping screw 18, the arc-shaped protrusion 7 can be extruded intermittently, a central channel 20 is arranged at the center of the bottom of the tapping screw 18, a through hole is formed in the tapping screw 18, the central channel 20 is communicated with a liquid storage cavity 3 through the through hole, so that cooling liquid in the liquid storage cavity 3 can be pressed into the central channel 20 through the through hole, two symmetrical impact air passages 21 are formed at the bottom of the tapping screw 18, two symmetrical liquid outlet passages 22 are formed at the bottom of the tapping screw 18, the bottom end opening of the impact air passages 21 is communicated with the liquid outlet passage 22, and the liquid outlet passage 22 is designed obliquely upwards, so that the cooling liquid can be sprayed out from the liquid outlet channel 22 to carry out tapping cooling treatment, the cooling liquid can upwards push the scraps in the threads to be discharged quickly, the cooling liquid can form a protective film on the scraps and the threaded holes to avoid friction damage, the bottom of the central channel 20 is provided with a reciprocating groove 181, the bottom of the central channel 20 is movably sleeved with a valve core 23, the top of the valve core 23 is in a T shape, and is movably sleeved in the reciprocating groove 181, the bottom of the valve core 23 is provided with a communicating hole 231, the bottom of the valve core 23 penetrates through the bottom of the tapping screw 18, so that the reciprocating groove 181 limits the position of the valve core 23 to avoid the falling off of the valve core 23, at the same time, when the tapping screw 18 starts tapping, the valve body 23 can be lifted up by the reaction force of the steel material, the reciprocating groove 181 regulates the position thereof, the communication hole 231 is communicated with the liquid outlet passage 22, and the coolant in the central passage 20 can be discharged from the liquid outlet passage 22 through the communication hole 231.

Referring to fig. 1 and 4, a gas collection tank 13 is fixedly sleeved at the bottom of the outer side of a positioning sleeve 1, the gas collection tank 13 is communicated with a transition tank 15 through a one-way valve IV123, when an airbag 11 is compressed, gas can enter the gas collection tank 13 through the one-way valve IV123, so that compressed gas can be filled in the gas collection tank 13 during tapping, a gas injection channel 24 is formed at the bottom of the positioning sleeve 1, an opening at one end of the gas injection channel 24 is communicated with the gas collection tank 13, the gas injection channel 24 is movably sleeved on the outer side of a tapping screw 18 in a circular ring shape from the outer side of the tapping screw 18 and is communicated with an opening at the top end of an impact gas channel 21, an electric control valve 241 is fixedly sleeved in the gas injection channel 24, the electric control valve 241 is in signal connection with an intelligent control mechanism, so that when the tapping screw 18 reversely rotates and retreats, the valve core 23 is squeezed and falls, the central channel 20 is not communicated with a liquid outlet channel 22, the intelligent control mechanism can open the electric control valve 241, so that high-pressure gas accumulated in the gas injection channel 13 can be flushed into the impact gas channel 21 through the one-way 24, the high-pressure gas pushes the residual cooling liquid in the impact air channel 21 to be sprayed out from the liquid outlet channel 22, so that the high-pressure gas rushes out and pushes the residual cooling liquid and the waste chips in the threaded hole to be quickly discharged along with the drill pushing action.

The use method (working principle) of the invention is as follows:

firstly, aligning a tapping screw 18 to a position of a steel material to be punched, starting a motor to enable the tapping screw 18 to rotate forwards at a high speed, simultaneously pushing a positioning sleeve 1 by a rack to press the steel material downwards, enabling a valve core 23 contacting the steel material to be pressed upwards, enabling a central channel 20 to be communicated with a liquid outlet channel 22 through a communication hole 231, enabling cooling liquid in a liquid storage cavity 3 to be sprayed out from the liquid outlet channel 22 under the height difference, and continuing to press the rack at the moment to enable the rotating tapping screw 18 to start tapping the steel material;

then, the eccentric wheel 19 rotates synchronously with the tapping screw 18, so that the eccentric wheel 19 intermittently extrudes two symmetrical arc-shaped protrusions 7, when one of the arc-shaped protrusions 7 is extruded by the eccentric wheel 19, the arc-shaped protrusion 7 at the position drives the pressure receiving plate 6 to be pressed into the movable groove 5 at the position, so that the cooling liquid in the movable groove 5 is pressed into the liquid storage cavity 3 through the one-way valve III122, meanwhile, the pressure receiving plate 6 extrudes the air bag 11 through the connecting rod 8 and the extrusion block 9, so that the gas in the air bag 11 is pressed into the transition tank 15 through the connecting pipe I14, the transition tank 15 is compressed and deformed against the liquid collecting tank 16 at the side of the pressed gas, so that the cooling liquid in the compressed and deformed liquid collecting tank 16 is rapidly introduced into the other movable groove 5 with large space through the connecting pipe II17 and the one-way valve II121, the pressure receiving plate 6 moves inwards to reset under the driving of the spring 10, so that the pressure receiving plate 6 pushes the cooling liquid in the liquid storage cavity 3 to enter the central channel 20, the cooling liquid is sprayed out for tapping and cooling, waste scraps are pushed upwards to be discharged, the extrusion block 9 drives the airbag 11 at the position to expand, outside air is led into the airbag 11 with enlarged space through the one-way valve I12, air in the inner cavity of the transition box 15 communicated with the expanded airbag 11 through the communication pipe I14 flows back to the airbag 11 with enlarged space through the communication pipe I14, meanwhile, after the air is pressed into the transition box 15 to cause the liquid collection box 16 to be compressed and deformed, the one-way valve IV123 blocked by the liquid collection box 16 is communicated with the transition box 15, the pressed air in the transition box 15 is led into the gas collection box 13 through the one-way valve IV123, and the liquid collection box 16 in the inner cavity of the transition box 15 where the air flows back expands and recovers to block the one-way valve IV123 in the inner cavity at the position, and the process is repeated;

finally, after tapping is completed, the motor drives the tapping screw 18 to rotate reversely, the rack is lifted synchronously, the tapping screw 18 is made to move back, the valve core 23 is not extruded and falls back at the moment, the central channel 20 is not communicated with the liquid outlet channel 22 any more, meanwhile, the electric control valve 241 is opened, high-pressure gas accumulated in the gas collection box 13 is made to rush into the impact air channel 21 through the gas injection channel 24, the high-pressure gas is made to push residual cooling liquid in the impact air channel 21 to be sprayed out from the liquid outlet channel 22, the high-pressure gas is made to rush out and push residual cooling liquid and waste chips in the threaded hole to be quickly discharged along with the drill pushing movement until the drill is completely withdrawn, and the electric control valve 241 is closed.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an automatic tapping machine of steel, includes position sleeve (1), its characterized in that: the gas collecting tank (13) is fixedly sleeved at the bottom of the outer side of the positioning sleeve (1), the liquid storage sleeve (2) is fixedly sleeved in the positioning sleeve (1), two symmetrical movable grooves (5) are formed in the inner side of the liquid storage sleeve (2), the one-way valve II (121) is fixedly sleeved at the bottom end of each movable groove (5), the pressure receiving plate (6) is movably sleeved in each movable groove (5), the one-way valve III (122) is fixedly sleeved on the pressure receiving plate (6), the arc-shaped bulge (7) is fixedly connected to the center of the bottom of one end, deviating from each movable groove (5), of the pressure receiving plate (6), the connecting rod (8) is fixedly connected to the center of one end of each movable groove (5), the extrusion block (9) is fixedly connected to the extrusion block (9), and the airbag (11) is fixedly connected to one end of the positioning sleeve (1), the utility model discloses a pneumatic control valve, including gasbag (11), one end opening fixedly connected with communicating pipe I (14) of gasbag (11), the other end fixedly connected with transition case (15) of communicating pipe I (14), the fixed joint has liquid gathering case (16) in the inner chamber of transition case (15), the one end opening fixedly connected with communicating pipe II (17) of liquid gathering case (16), tapping screw (18) have been cup jointed in the center activity of position sleeve (1), the middle part fixedly connected with eccentric wheel (19) of tapping screw (18), central passageway (20) have been seted up at the bottom center of tapping screw (18), two symmetrical impact air flue (21) have been seted up to the bottom of tapping screw (18), liquid outlet channel (22) of two symmetries have been seted up to the bottom of tapping screw (18), case (23) have been cup jointed in the bottom activity of central passageway (20).

2. The automatic steel tapping machine according to claim 1, wherein: the positioning sleeve (1) is fixedly connected to the bottom end of the rack, two symmetrical check valves I (12) are fixedly sleeved on the positioning sleeve (1), and two symmetrical check valves IV (123) are fixedly sleeved on the positioning sleeve (1).

3. The automatic steel tapping machine according to claim 1, wherein: the inner cavity of the liquid storage sleeve (2) forms a liquid storage cavity (3), cooling liquid is filled in the liquid storage cavity (3), and a space between the liquid storage sleeve (2) and the positioning sleeve (1) forms an object storage cavity (4).

4. The automatic steel tapping machine according to claim 1, wherein: arc arch (7) are the design of the smooth circular arc, the one end of connecting rod (8) runs through stock solution cover (2) to putting thing chamber (4) in, the winding has spring (10) on connecting rod (8), the one end of spring (10) just is the one end fixed connection of stock solution cover (2) with extrusion piece (9), the lateral wall fixed connection of the other end and stock solution cover (2).

5. The automatic steel tapping machine according to claim 1, wherein: the opening at one end of the air bag (11) is fixedly connected with the inner cavity wall of the positioning sleeve (1), and the opening of the air bag (11) fixedly connected with the positioning sleeve (1) is communicated with the outside through a one-way valve I (12).

6. The automatic steel tapping machine according to claim 1, wherein: the transition box (15) is fixedly connected with the inner wall of the positioning sleeve (1), the transition box (15) is internally divided into two non-communicated inner cavities from the center, two inner cavities in the transition box (15) are respectively communicated with two communicating pipes I (14), an opening at one end of the liquid collecting box (16) is communicated with a cooling liquid storage device, the liquid collecting box (16) is made of rubber, the liquid collecting box (16) is only fixedly connected with the transition box (15) at one end, the bottom end and the left end which are opposite to the center of the transition box (15), one end and the upper end of the liquid collecting box (16) opposite to the communicating pipe I (14) and the right end opposite to the inner cavity wall of the positioning sleeve (1) are in a free state, the right end of the liquid collecting box (16) opposite to the inner wall of the positioning sleeve (1) is attached with the positioning sleeve, and the check valve IV (123) is positioned at the joint, and the other end of the communication pipe II (17) is fixedly connected with the check valve II (121) which is farthest away.

7. The automatic steel tapping machine according to claim 1, wherein: the top end of the tapping screw (18) is fixedly connected with the output end of a motor, the eccentric wheel (19) and the arc-shaped bulge (7) are positioned on the same straight line, a through hole is formed in the tapping screw (18), the central channel (20) is communicated with the liquid storage cavity (3) through the through hole, the bottom end opening of the impact air channel (21) is communicated with the liquid outlet channel (22), the liquid outlet channel (22) is designed in an inclined upward mode, a reciprocating groove (181) is formed in the bottom of the central channel (20), the top of the valve core (23) is T-shaped and movably sleeved in the reciprocating groove (181), a communicating hole (231) is formed in the bottom of the valve core (23), and the bottom of the valve core (23) penetrates through the bottom of the tapping screw (18).

8. The automatic steel tapping machine according to claim 1, wherein: gas collection tank (13) are put through with transition case (15) through check valve IV (123), jet-propelled passageway (24) have been seted up to the bottom of position sleeve (1), the one end opening and the gas collection tank (13) switch-on of jet-propelled passageway (24), jet-propelled passageway (24) are the activity of ring form during to the outside of tapping screw rod (18) and cup joint in the outside of tapping screw rod (18), and with the top end opening intercommunication of assaulting air flue (21), jet-propelled passageway (24) internal fixation has cup jointed automatically controlled valve (241), automatically controlled valve (241) and intelligent control mechanism signal connection.