阅读说明：本技术 一种切削刀具自动弹出保护设备 (Automatic ejection protection equipment for cutting tool ) 是由 黄雯琦 于 2021-01-14 设计创作，主要内容包括：本发明公开的一种切削刀具自动弹出保护设备,包括转动头,所述转动头下侧固定设置有切削台,所述转动头内中心设有开口向下刀具腔,所述刀具腔内设有能上下滑动的切削刀具,所述转动头内且位于所述刀具腔内左右两壁对称且连通有环形板腔,所述切削刀具内且位于所述刀具腔内一端设有开口朝向左右两侧所述环形板腔的压紧腔,本发明通过将切削刀具快速弹出的方式,先对固定件内导入弱电,之后通过切削刀具靠近固定件时发生弱电感应进而通过将切削刀具弹出的方式,对其进行保护,防止因设备出现故障导致切削刀具与固定件发生碰撞而折断的事故的发生,最后通过连接绳对切削刀具自动收回的方式,防止其弹出后不易寻找的困境。(The invention discloses a cutting tool automatic ejection protection device, which comprises a rotating head, wherein a cutting table is fixedly arranged at the lower side of the rotating head, a tool cavity with a downward opening is arranged at the center in the rotating head, a cutting tool capable of sliding up and down is arranged in the tool cavity, the left wall and the right wall in the tool cavity in the rotating head are symmetrical and are communicated with annular plate cavities, and a pressing cavity with an opening facing the left side and the right side is arranged at one end in the tool cavity in the cutting tool, the difficulty that the pop-up paper cannot be easily found after being popped up is prevented.)

1. The utility model provides a cutting tool auto-eject protection equipment, includes the rotating head, its characterized in that: a cutting table is fixedly arranged at the lower side of the rotating head, a cutter cavity with a downward opening is arranged at the center in the rotating head, a cutting tool capable of sliding up and down is arranged in the cutter cavity, the left wall and the right wall in the cutter cavity are symmetrically communicated with an annular plate cavity, a pressing cavity with an opening facing the left side and the right side is arranged at one end in the cutter cavity in the cutting tool, annular plates capable of sliding left and right are respectively arranged in the annular plate cavities at the left side and the right side, connecting blocks are respectively fixedly arranged at the centers of the end surfaces of the annular plates far away from the cutting tool at the left side and the right side, a connecting rod shaft is rotatably arranged between the upper wall and the lower wall in the annular plate cavity, connecting rods are respectively fixedly arranged on the outer circular surfaces of the connecting rod shaft at the left side and the right side, the front end of each connecting rod is hinged with the rear end of the corresponding, the end, far away from the cutting tool, of the sliding piece on the left side and the right side is respectively hinged with the rear ends of the connecting rods on the left side and the right side, when the cutting tool needs to work, the sliding piece on the left side and the right side slides towards the direction far away from the cutting tool, and then the connecting rods on the left side and the right side drive the annular plates on the left side and the right side to slide into the pressing cavity respectively so as to clamp the cutting tool, the center of the upper wall in the tool cavity is communicated with an elastic block cavity, an elastic block capable of sliding up and down is arranged in the elastic block cavity, the lower end of the elastic block is fixedly provided with a connecting cylinder, the lower end face of the connecting cylinder is abutted against the upper end face of the cutting tool, the center of the upper end face of the cutting tool is fixedly connected with a connecting rope, the left side and the right, the left side and the right side of the upper end in the cutting table are symmetrically provided with plug cavities with upward openings, the plug cavities on the left side and the right side are respectively provided with a plug capable of sliding up and down, when the cutting tool stops working, the plugs on the left side and the right side slide up and respectively enter the electrified sockets on the left side and the right side, so as to lead weak current into the electrified sockets on the left side and the right side, when the cutting tool stops working, the rotating head drives the cutting tool to be in contact with the fixing piece and collide with the fixing piece when moving, the weak current flowing in the fixing piece triggers the cutting tool, so as to drive the annular plates on the left side and the right side to rapidly move in the direction away from the cutting tool, the elastic block rapidly slides down and further drive the cutting tool to pop up downwards to prevent collision, and the connecting rope is folded to drive the popped up cutting, and the loss caused by the loss of the cutting tool after the cutting tool is ejected is prevented.

2. The automatic ejection protection device for a cutting tool according to claim 1, wherein: the cutting table is internally provided with a left side and a right side, power cavities are respectively arranged on the lower sides of the plug cavities, lifting motors are fixedly arranged on the left side and the right side in the inner walls of the power cavities, the left end and the right end of each lifting motor are symmetrically and dynamically connected with a lifting motor shaft, the left side and the right side of each lifting motor shaft are far away from one end of each lifting motor and respectively extend to the left side and the right side, power bevel gears are fixedly arranged in the power cavities, the lower end surfaces of the left side and the right side of each plug are respectively and fixedly connected with lifting sleeves, lifting threaded shafts are respectively and internally connected with the lifting sleeves in a threaded mode, and the lower ends of the lifting threaded shafts respectively.

3. The automatic ejection protection device for a cutting tool according to claim 1, wherein: the utility model discloses a line wheel, including line wheel intracavity, both ends face is fixed respectively and is equipped with the line wheel torsional spring about, connect the drum intracavity, connect the rope and be located connect the drum intracavity, connect the rope in the drum intracavity with the line wheel excircle winding is connected, line wheel about both ends face with it is fixed respectively to be equipped with the line wheel axis about the line wheel, the left and right sides line wheel axis is kept away from line wheel one end respectively with two walls rotate about the line wheel intracavity and are connected, connect the rope upper end upwards extend to line wheel intracavity with the line wheel excircle facial features winding is connected, line wheel about both ends face with it is fixed respectively to be equipped with the line wheel torsional spring between two walls about the line wheel intracavity, be equipped with the connection drum chamber that the opening.

4. A cutting tool automatic ejection protection apparatus as claimed in claim 3, wherein: keep away from in the annular plate intracavity the fixed spacing axle that is equipped with of cutter chamber one side inner wall front side, spacing axle is close to cutter chamber one end with front end sliding connection in the connecting block, both ends symmetry just slides and is equipped with the slide bar around in the connecting rod, the front side the slide bar with connecting block rear end hinged joint, the rear side the slide bar is kept away from connecting rod axle one end with the slider is kept away from cutter chamber one end hinged joint, annular plate intracavity rear end is close to fixed spacing post that is equipped with between the upper and lower two walls in cutter chamber one side, the left and right sides the connecting block is kept away from cutter chamber terminal surface center respectively fixed be equipped with the connecting block stay cord that the bullet piece stay cord is connected.

5. The automatic ejection protection apparatus for a cutting tool according to claim 4, wherein: the left and right sides rear end is equipped with the spacing post chamber that link up from top to bottom in the slider respectively, the left and right sides spacing post can be in the left and right sides respectively spacing post intracavity horizontal slip, the left and right sides be equipped with the opening orientation in the slider respectively the connecting thread chamber of cutter chamber one side, the left and right sides just be located in the slider inner wall rotate the head internal fixation and be equipped with flexible motor, flexible motor left and right sides both ends symmetry and power are connected with flexible motor shaft, the left and right sides flexible motor shaft is kept away from flexible motor one end extends to the left and right sides respectively the connecting thread intracavity and with connecting thread intracavity wall sliding connection.

6. The automatic ejection protection apparatus for a cutting tool according to claim 5, wherein: a connecting spring is fixedly arranged between one end face of the telescopic motor shaft far away from the telescopic motor and the inner wall of one side of the connecting threaded cavity far away from the telescopic motor, an electromagnetic block cavity is arranged at the inner center of one end of the telescopic motor shaft close to the connecting spring, an active electromagnetic block is fixedly arranged at the center in the electromagnetic block cavity, the upper wall and the lower wall in the electromagnetic block cavity are symmetrical and communicated with a threaded plate cavity with an opening far away from the electromagnetic block cavity, a threaded plate capable of sliding up and down is arranged in the threaded plate cavity, magnet connecting blocks capable of sliding up and down are symmetrically arranged at the upper side and the lower side in the electromagnetic block cavity, induction magnets magnetically connected with the active electromagnetic block are respectively fixedly arranged at the upper side and the lower side of the magnet connecting blocks close to the center of one end face of the active electromagnetic block, one end face of the magnet connecting block, and the upper end surface and the lower end surface of the driving electromagnetic block and the upper side and the lower side of the magnet connecting block are respectively and fixedly provided with an electromagnetic block spring between the end surfaces of the driving electromagnetic block.

7. The automatic ejection protection device for a cutting tool according to claim 1, wherein: the rotating head is characterized in that a rotating shaft is fixedly arranged on the upper end face of the rotating head and is connected with external power, and when the rotating shaft rotates at a high speed, the rotating head can synchronously rotate at a high speed so as to drive the cutting tool to perform cutting work.

Technical Field

The invention relates to the technical field of metal cutting, in particular to automatic ejection protection equipment for a cutting tool.

Background

The metal cutting is a crucial step in a metal forming process, the metal piece is geometrically designed through interaction between the metal piece and a cutter, a fixing piece for fixing the metal piece is also an indispensable part in the machining process, the cutter needs to be reset and returns to the original point after the work is finished, the cutter collides with the fixing piece in the moving process of the cutter due to programming errors or deviation of the fixing piece, the cutter is broken once the cutter collides, loss is caused, the collision process is extremely short, a worker often does not react, and the cutter is broken.

Disclosure of Invention

In order to solve the problems, the automatic ejection protection device for the cutting tool is designed, and comprises a rotating head, wherein a cutting table is fixedly arranged on the lower side of the rotating head, a tool cavity with a downward opening is formed in the center of the rotating head, the cutting tool capable of sliding up and down is arranged in the tool cavity, the left wall and the right wall in the tool cavity are symmetrical and communicated with annular plate cavities, a pressing cavity with an opening facing the left side and the right side is formed in one end in the tool cavity in the cutting tool, annular plates capable of sliding left and right are respectively arranged in the annular plate cavities on the left side and the right side, connecting blocks are respectively and fixedly arranged at the centers of the end surfaces of the annular plates far away from the cutting tool on the left side and the right side, a connecting rod shaft is rotatably arranged between the upper wall and the lower wall in the annular plate cavities, and connecting rods are respectively and fixedly arranged on the outer circular surfaces of the connecting, the front end of the connecting rod is hinged with the rear end of the connecting block, the rear ends of the left side and the right side of the annular plate cavities are respectively provided with a sliding part capable of sliding left and right, one end of the sliding part far away from the cutting tool is respectively hinged with the rear ends of the left side and the right side of the connecting rod, when the cutting tool needs to work, the sliding parts on the left side and the right side slide towards the direction far away from the cutting tool, and further drive the annular plates on the left side and the right side to slide into the pressing cavity respectively through the connecting rods on the left side and the right side, so as to clamp the cutting tool, the center of the upper wall in the tool cavity is communicated with an elastic block cavity, an elastic block capable of sliding up and down is arranged in the elastic block cavity, the lower end of the elastic block is fixedly provided with a connecting cylinder, the lower end face, the left side and the right side of the upper end surface in the cutting table are symmetrically and fixedly provided with fixing parts, the lower ends in the fixing parts on the left side and the right side are respectively provided with a power-on socket with a downward opening, the left side and the right side of the upper end in the cutting table are symmetrically provided with a plug cavity with an upward opening, the plug cavities on the left side and the right side are respectively provided with a plug capable of sliding up and down, when the cutting tool stops working, the plugs on the left side and the right side slide up and down simultaneously and respectively enter the power-on sockets on the left side and the right side, so that weak current is led into the power-on sockets on the left side and the right side, when the cutting tool stops working, the rotating head moves to drive the cutting tool to be in contact with the fixing parts and collide, the weak current flowing in the fixing parts triggers the cutting tool, so as to drive, and then drive cutting tool pops out downwards, prevents the collision, connect the rope through drawing in and then drive and pop out cutting tool retrieves, prevents to lose after cutting tool pops out, causes the loss.

Preferably, the cutting table is internally provided with a left side and a right side, power cavities are respectively arranged on the lower sides of the plug cavities, lifting motors are fixedly arranged on the left side and the right side in the inner walls of the power cavities, the left end and the right end of each lifting motor are symmetrically and dynamically connected with a lifting motor shaft, the left side and the right side of each lifting motor shaft are far away from one end of each lifting motor and respectively extend to the left side and the right side, power bevel gears are fixedly arranged in the power cavities, the left side and the right side of each power bevel gear are respectively and fixedly connected with lifting sleeves on the lower end surfaces of the plugs, lifting threaded shafts are respectively and internally and respectively in the lifting sleeves, and the lower ends of the lifting threaded shafts respectively.

Preferably, bullet piece intracavity upper wall with the fixed bullet piece spring that is equipped with between the bullet piece up end, the fixed bullet piece stay cord that is equipped with in bullet piece up end center, establish the line wheel chamber in the bullet piece, line wheel intracavity is equipped with can the pivoted line wheel, the line wheel is controlled both ends face and is fixed respectively and is equipped with the line axle, the left and right sides line axle is kept away from line wheel one end respectively with two walls rotate about the line wheel intracavity and are connected, connect the rope upper end upwards extend to line wheel intracavity with the outer disc winding of line wheel is connected, line wheel about both ends face with it is fixed respectively to be equipped with line wheel torsional spring to control between two walls about the line wheel intracavity, be equipped with the decurrent connection drum chamber of opening in the connection drum, it is located to connect the rope connect the drum intracavity.

But preferably, keep away from in the annular plate intracavity the fixed spacing axle that is equipped with of cutter chamber one side inner wall front side, spacing axle is close to cutter chamber one end with front end sliding connection in the connecting block, both ends symmetry just slides and is equipped with the slide bar around in the connecting rod, the front side the slide bar with connecting block rear end hinged joint, the rear side the slide bar is kept away from connecting rod axle one end with the slider is kept away from cutter chamber one end hinged joint, annular plate intracavity rear end is close to fixed spacing post that is equipped with between the two walls about cutter chamber one side, the left and right sides the connecting block is kept away from cutter chamber terminal surface center respectively fixed be equipped with the connecting block stay cord that the bullet piece stay cord is connected.

But preferably, the left and right sides rear end is equipped with the spacing post chamber that link up from top to bottom respectively in the slider, the left and right sides spacing post can be in the left and right sides respectively spacing post intracavity horizontal slip, the left and right sides be equipped with the opening orientation in the slider respectively the connecting thread chamber of cutter chamber one side, the left and right sides just be located in the slider inner wall rotate the head internal fixation and be equipped with flexible motor, flexible motor left and right ends symmetry and power are connected with flexible motor shaft, the left and right sides flexible motor shaft is kept away from flexible motor one end extends to the left and right sides respectively the connecting thread intracavity and with connecting thread intracavity wall sliding connection.

Preferably, a connecting spring is fixedly arranged between one end face of the telescopic motor shaft far away from the telescopic motor and the inner wall of one side of the connecting threaded cavity far away from the telescopic motor, an electromagnetic block cavity is arranged at the inner center of one end of the telescopic motor shaft close to the connecting spring, an active electromagnetic block is fixedly arranged at the center in the electromagnetic block cavity, the upper wall and the lower wall in the electromagnetic block cavity are symmetrical and communicated with a threaded plate cavity with an opening far away from the electromagnetic block cavity, a threaded plate capable of sliding up and down is arranged in the threaded plate cavity, magnet connecting blocks capable of sliding up and down are symmetrically arranged at the upper side and the lower side in the electromagnetic block cavity, induction magnets magnetically connected with the active electromagnetic block are respectively and fixedly arranged at the upper side and the lower side of the magnet connecting blocks close to the center of one end face of the active electromagnetic block, one end face of the magnet connecting block far, and the upper end surface and the lower end surface of the driving electromagnetic block and the upper side and the lower side of the magnet connecting block are respectively and fixedly provided with an electromagnetic block spring between the end surfaces of the driving electromagnetic block.

Preferably, a rotating shaft is fixedly arranged on the upper end face of the rotating head and is connected with external power, and when the rotating shaft rotates at a high speed, the rotating head can synchronously rotate at a high speed and further can drive the cutting tool to perform cutting work.

The invention has the beneficial effects that: according to the invention, by means of quickly popping the cutting tool, weak current is firstly introduced into the fixing piece, then the cutting tool is protected by means of weak current induction when approaching the fixing piece and then popping the cutting tool, so that the accident that the cutting tool collides with the fixing piece and is broken due to equipment failure is prevented, and finally, the cutting tool is automatically withdrawn by means of the connecting rope, so that the trouble that the cutting tool is not easy to find after being popped is prevented.

Drawings

In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.

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

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic view of the structure a-a in fig. 1.

Fig. 3 is an enlarged schematic view of B in fig. 1.

Fig. 4 is an enlarged schematic view of C in fig. 2.

Detailed Description

The invention will now be described in detail with reference to fig. 1-4, wherein for ease of description the orientations described hereinafter are now defined as follows: the up, down, left, right, and front-back directions described below correspond to the up, down, left, right, and front-back directions in the projection relationship of fig. 1 itself.

The invention relates to a cutting tool automatic ejection protection device, which comprises a rotating head 11, wherein a cutting table 14 is fixedly arranged at the lower side of the rotating head 11, a tool cavity 29 with a downward opening is arranged at the center in the rotating head 11, a cutting tool 21 capable of sliding up and down is arranged in the tool cavity 29, the left wall and the right wall in the tool cavity 29 in the rotating head 11 are symmetrical and are communicated with an annular plate cavity 26, a pressing cavity 30 with an opening facing to the annular plate cavity 26 at the left side and the right side is arranged at one end in the tool cavity 29 in the cutting tool 21, annular plates 31 capable of sliding left and right are respectively arranged in the annular plate cavity 26 at the left side and the right side, a connecting block 28 is respectively and fixedly arranged at the center of one end face of the annular plates 31 at the left side and the right side, which is far away from the cutting tool 21, a connecting rod shaft 33 is rotatably arranged between the upper wall and the lower wall in the annular plate cavity 26, the front end of the connecting rod 34 is hinged with the rear end of the connecting block 28, the rear ends of the left and right annular plate cavities 26 are respectively provided with a sliding part 37 capable of sliding left and right, one end of the left and right sliding parts 37 far away from the cutting tool 21 is respectively hinged with the rear ends of the left and right connecting rods 34, when the cutting tool 21 needs to work, the sliding parts 37 on the left and right sides slide towards the direction far away from the cutting tool 21, and then the left and right annular plates 31 are respectively driven by the connecting rod 34 on the left and right sides to slide into the pressing cavity 30, so as to clamp the cutting tool 21, the center of the inner upper wall of the tool cavity 29 is communicated with an elastic block cavity 42, an elastic block 44 capable of sliding up and down is arranged in the elastic block cavity 42, the lower end of the elastic block 44 is fixedly provided with a connecting cylinder 41, the lower end face of the connecting cylinder 41 is abutted against the upper, a connecting rope 49 is fixedly connected to the center of the upper end face of the cutting tool 21, the left side and the right side of the upper end face in the cutting table 14 are symmetrically and fixedly provided with fixing pieces 15, the lower ends in the fixing pieces 15 on the left side and the right side are respectively provided with an electrified socket 25 with a downward opening, the left side and the right side of the upper end in the cutting table 14 are symmetrically provided with a plug cavity 23 with an upward opening, the plug cavities 23 on the left side and the right side are respectively provided with a plug 22 capable of sliding up and down, when the cutting tool 21 stops working, the plugs 22 on the left side and the right side slide up and respectively enter the electrified sockets 25 on the left side and the right side, so that weak current is introduced into the electrified sockets 25 on the left side and the right side, when the cutting tool 21 stops working, the rotating head 11 moves to drive the cutting tool 21 to be in contact with the fixing piece 15 and then collide, and then drive the left and right sides annular plate 31 to keep away from cutting tool 21 direction rapid movement, bullet piece 44 slides down fast, and then drives cutting tool 21 pops out downwards, prevents the collision, connect rope 49 through draw in and then drive the cutting tool 21 who pops out retrieve, prevent that cutting tool 21 loses after popping out, cause the loss.

Beneficially, power cavities 12 are respectively arranged in the cutting table 14 and at the lower sides of the plug cavities 23 at the left and right sides, lifting motors 18 are fixedly arranged in the inner walls of the power cavities 12 at the left and right sides, the left and right ends of each lifting motor 18 are symmetrically and dynamically connected with a lifting motor shaft 17, one ends of the lifting motor shafts 17 at the left and right sides, far away from the lifting motor 18, respectively extend to the left and right sides, power bevel gears 20 are fixedly arranged in the power cavities 12, lifting sleeves 24 are respectively and fixedly connected to the lower end surfaces of the plugs 22 at the left and right sides, lifting threaded shafts 19 are respectively and threadedly connected in the lifting sleeves 24 at the left and right sides, and lifting bevel gears 13 meshed with the power bevel gears 20 are respectively and fixedly arranged in the power cavities 12 at the left and right sides and the.

Beneficially, a spring block spring 45 is fixedly arranged between the upper wall in the spring block cavity 42 and the upper end face of the spring block 44, a spring block pull rope 50 is fixedly arranged at the center of the upper end face of the spring block 44, a wire wheel cavity 46 is arranged in the spring block 44, a rotatable wire wheel 47 is arranged in the wire wheel cavity 46, wire wheel shafts 48 are fixedly arranged on the left end face and the right end face of each wire wheel 47 respectively, one ends of the wire wheel shafts 48 far away from the wire wheel 47 are rotatably connected with the left wall and the right wall in the wire wheel cavity 46 respectively, the upper end of a connecting rope 49 upwards extends into the wire wheel cavity 46 to be wound and connected with the outer circular face of each wire wheel 47, wire wheel torsion springs 43 are fixedly arranged between the left end face and the right end face of each wire wheel 47 and the left wall and the right wall in the wire wheel cavity 46 respectively, a connecting cylinder cavity 40 with a downward opening is arranged in the.

Beneficially, a limiting shaft 27 is fixedly arranged on the front side of the inner wall of one side, far away from the cutter cavity 29, of the annular plate cavity 26, the limiting shaft 27 is close to one end of the cutter cavity 29 and is connected with the front end of the interior of the connecting block 28 in a sliding mode, sliding rods 35 are symmetrically and slidably arranged at the front end and the rear end of the interior of the connecting rod 34, the sliding rods 35 on the front side are hinged to the rear end of the connecting block 28, the rear end of the sliding rods 35 on the rear side is far away from one end of the connecting rod shaft 33 and hinged to one end, far away from the cutter cavity 29, of the sliding piece 37, limiting columns 51 are fixedly arranged between the upper wall and the lower wall of the side, close to the cutter cavity 29, of the rear end of the annular plate cavity 26, and pull rope connecting blocks.

Beneficially, the rear ends in the sliding parts 37 on the left and right sides are respectively provided with a limiting column cavity 39 which is through up and down, the limiting columns 51 on the left and right sides can slide left and right in the limiting column cavity 39 respectively, the sliding parts 37 on the left and right sides are respectively provided with a connecting thread cavity 56 with an opening facing one side of the cutter cavity 29, the sliding parts 37 on the left and right sides are internally provided with a telescopic motor 38 which is fixedly arranged in the rotating head 11, the left and right ends of the telescopic motor 38 are symmetrically and dynamically connected with telescopic motor shafts 36, and one ends of the telescopic motor shafts 36 on the left and right sides, far away from the telescopic motor 38, respectively extend into the connecting thread cavities 56 on the left and right sides and are in sliding connection with the inner walls of.

Beneficially, a connecting spring 52 is fixedly arranged between an end face of the telescopic motor shaft 36 far from the telescopic motor 38 and an inner wall of one side of the connecting threaded cavity 56 far from the telescopic motor 38, an electromagnetic block cavity 58 is arranged at the center of one end of the telescopic motor shaft 36 close to the connecting spring 52, an active electromagnetic block 59 is fixedly arranged at the center of the electromagnetic block cavity 58, an upper wall and a lower wall of the electromagnetic block cavity 58 are symmetrical and communicated with a threaded plate cavity 57 with an opening far from the electromagnetic block cavity 58, a threaded plate 55 capable of sliding up and down is arranged in the threaded plate cavity 57, magnet connecting blocks 54 capable of sliding up and down are symmetrically arranged at the upper side and the lower side of the electromagnetic block cavity 58, induction magnets 53 magnetically connected with the active electromagnetic block 59 are respectively fixedly arranged at the centers of the upper side and the lower side of the magnet connecting blocks 54 close to one end face of the active electromagnetic block 59, one end face of the magnet connecting block 54 far from the active electromagnetic block 59 and one The surfaces of the driving electromagnetic block 59 are fixedly connected, and electromagnetic block springs 60 are respectively and fixedly arranged between the upper end surface and the lower end surface of the driving electromagnetic block 59 and the end surfaces of the magnet connecting blocks 54 close to the driving electromagnetic block 59.

Advantageously, a rotating shaft 16 is fixedly arranged on the upper end surface of the rotating head 11, the rotating shaft 16 is connected with external power, and when the rotating shaft 16 rotates at a high speed, the rotating head 11 can synchronously rotate at a high speed, so as to drive the cutting tool 21 to perform cutting work.

The following will describe in detail the use steps of an automatic ejection protection device for a cutting tool in the present text with reference to fig. 1 to 4:

in an initial state, the left and right annular plates 31 are separated from the pressing cavity 30, the telescopic motor 38 is not started, the telescopic motor shaft 36 is located in the connecting threaded cavity 56, one end face, away from the driving electromagnetic block 59, of the threaded plate 55 is in a separation threaded connection state with the inner wall of the connecting threaded cavity 56, the outer circular surface of the telescopic motor shaft 36 is free of threads, the inner wall of the connecting threaded cavity 56 is provided with threads, the reel torsion spring 43 is in a natural state, the elastic block spring 45 is in a compression state, the plug 22 and the power-on socket 25 are in a separation connection state, and the lifting motor 18 is not.

During cutting, the telescopic motor 38 is started to drive the left and right telescopic motor shafts 36 to rotate, at this time, the active electromagnetic block 59 is started, the upper and lower induction magnets 53 are driven to move towards the direction away from the active electromagnetic block 59 through magnetic connection, and further, the threaded plate 55 is driven to move towards the direction away from the active electromagnetic block 59 through the magnet connecting block 54 until the end surface of the threaded plate 55 away from the active electromagnetic block 59 is in threaded connection with the inner wall of the connecting threaded cavity 56, at this time, the telescopic motor shaft 36 rotates, and the sliding piece 37 can be driven to slide towards the direction away from the telescopic motor 38 through the threaded connection between the threaded plate 55 and the inner wall of the connecting threaded cavity 56, the limiting column 51 is fixed, the inner wall of the limiting column cavity 39 is in sliding connection with the outer circular surface of the limiting column 51, so as to achieve left and right limiting, the sliding piece 37 moves to drive the rear side sliding rod 35 to move, the connecting rod 34 further drives the front slide rod 35 to move towards the direction close to the cutter cavity 29, so as to drive the connecting block 28 to move towards the direction close to the cutter cavity 29 through the hinge connection, the cutter cavity 29 drives the annular plate 31 to slide towards the cutter cavity 29 through the fixed connection until the annular plate is pressed against the inner wall of the pressing cavity 30, further fixing the cutting tool 21, starting the rotating shaft 16 to start rotating at high speed, further driving the rotating head 11 to rotate at high speed through the fixed connection, driving the clamped cutting tool 21 to rotate at high speed by the rotating head 11 through the left and right annular plates 31, the metal material on the upper end surface of the cutting table 14 is cut, at this time, the connecting block 28 drives the connecting block pull rope 32 to move towards the direction of the cutter cavity 29 through the fixed connection, the elastic block pull rope 50 is driven to slide upwards through the fixed connection, the elastic block 44 is driven to move upwards, and the elastic block spring 45 is in a limit compression state at the moment;

when the cutting is completed, the rotation shaft 16 stops rotating to drive the cutting tool 21 to stop, the rotation shaft 16 drives the cutting tool 21 to move and reset by moving back and forth and left and right, at this time, the lifting motor 18 is started to drive the left and right lifting motor shafts 17 to rotate, and further drives the power bevel gear 20 to rotate through a fixed connection, the power bevel gear 20 drives the lifting bevel gear 13 to rotate through gear engagement, the lifting bevel gear 13 drives the lifting threaded shaft 19 to rotate, and further drives the lifting sleeve 24 to slide upwards through a threaded connection, the lifting sleeve 24 drives the plug 22 to slide upwards through a fixed connection, enter the energized socket 25 to be electrically connected with the energized socket 25, and further introduces weak current into the energized socket 25, when the cutting tool 21 and the fixing member 15 are about to collide due to program errors, programmed code input errors and the like, the cutting tool 21 passes through the weak current in the induction fixing piece 15, the active electromagnetic block 59 stops working, and then the electromagnetic block spring 60 drives the magnet connecting block 54 to reset rapidly, the magnet connecting block 54 drives the thread plate 55 to reset rapidly and is separated from the thread connection with the inner wall of the connecting thread cavity 56, at this time, the connecting spring 52 in a stretching state drives the sliding piece 37 to reset by self-restoring force, and then drives the connecting block 28 to reset by the connecting rod 34, the connecting block 28 drives the ring plate 31 to reset and is separated from the pressing cavity 30, at this time, the cutting tool 21 is not pressed by the ring plate 31 to reset rapidly, the connecting block pull rope 32 is driven to move in a direction away from the tool cavity 29, and then the elastic block pull rope 50 is driven to slide rapidly downwards, the elastic block spring 45 drives the elastic block 44 to slide rapidly downwards by self-restoring force, the elastic block 44, at this moment, the cutting tool 21 drives the connecting rope 49 to pop up downwards quickly, the connecting rope 49 drives the reel 47 to rotate, the reel torsion spring 43 rotates to start to accumulate the torsional force, when the reel torsion spring 43 drives the reel 47 to rotate reversely by the self torsional force of the reel torsion spring 43, the connecting rope 49 can be driven to move upwards, and then the cutting tool 21 is driven to move upwards, so that the predicament that the cutting tool 21 is not easy to find after popping up is prevented.

The invention has the beneficial effects that: according to the invention, by means of quickly popping the cutting tool, weak current is firstly introduced into the fixing piece, then the cutting tool is protected by means of weak current induction when approaching the fixing piece and then popping the cutting tool, so that the accident that the cutting tool collides with the fixing piece and is broken due to equipment failure is prevented, and finally, the cutting tool is automatically withdrawn by means of the connecting rope, so that the trouble that the cutting tool is not easy to find after being popped is prevented.

The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.