CN115055734A

CN115055734A - Magnetic drill with drill bit capable of running stably and not moving

Info

Publication number: CN115055734A
Application number: CN202210673659.8A
Authority: CN
Inventors: 刘佳兵; 刘玉高; 吴朗霞
Original assignee: Yangzhou Kedi Electromechanical Manufacturing Co ltd
Current assignee: Yangzhou Kedi Electromechanical Manufacturing Co ltd
Priority date: 2022-06-15
Filing date: 2022-06-15
Publication date: 2022-09-16

Abstract

The invention relates to the technical field of magnetic seat drills, and discloses a magnetic seat drill with a drill bit running stably and without displacement, which comprises a machine body, wherein a power storage device comprises a shell, a first partition plate, a moving cylinder, a moving rod, a first spring, a second spring and a limiting device, the shell is fixedly connected to the front side and the rear side of the machine body, the first partition plate is fixedly connected to the inner side of the shell, the moving cylinder is connected to the inner side of the first partition plate in a sliding mode, the moving rod is connected to the inner side of the moving cylinder in a sliding mode, the second spring is sleeved on the axial outer side of the moving cylinder, and the limiting device is arranged on the axial outer side of the moving rod. This magnetic drill that drill bit steady operation does not shift is bored through the mating reaction between motion pole, rope, pulley, spliced pole, linkage and the supporting shoe, and then has realized the purpose that can stabilize the magnetic drill to reach the effect that prevents that the magnetic drill from empting, shifting, and then solved the problem that has the potential safety hazard, thereby reach the purpose of steady operation.

Description

Magnetic drill with stable operation and no displacement

Technical Field

The invention relates to the technical field of magnetic drill bases, in particular to a magnetic drill base with a drill bit running stably and without displacement.

Background

The magnet bores and is the electric current production magnetic field that the magnetic drill bottom changed after the circular telegram for it adsorbs on the steel construction, then the high-speed operation of magnetic drill motor drives the drill bit, realizes drilling to the steel construction, and the magnet bores and can realize that metal work piece need not the lathe, also can carry out high accuracy drilling, now along with the continuous progress of science and technology, the developing direction that the magnet bored more and more tends to diversified direction.

The existing magnetic drill has the following technical defects: firstly, the traditional magnetic drill chuck completely depends on the current changed by the pedestal to generate magnetic field force to fix the magnetic field force on a metal workpiece, but the magnetic drill chuck has the condition that the current changed by the pedestal is suddenly cut off due to the loss of internal parts or external factors, and the drilling machine still runs at high speed due to the fact that the fixing force of the magnetic field disappears suddenly, so that the magnetic drill chuck is easy to topple and shift under the condition, and the problem of potential safety hazard is caused; secondly, when the traditional magnetic drill is in failure and the fixed magnetic field force disappears suddenly, the drilling machine cannot be braked quickly, so that the drilling machine still rotates at a high speed after losing the fixed force, the drilling machine is easy to damage metal workpieces, and the metal workpieces are scrapped.

Disclosure of Invention

The invention aims to provide a magnetic drill with a drill bit running stably and without displacement, so as to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: a magnetic drill without displacement of a drill bit, which comprises a machine body, wherein the front side and the rear side of the machine body are fixedly connected with a power storage device, a control device and a dispersing device are arranged in the power storage device, and the upper side and the lower side of the machine body are fixedly provided with main body devices;

the power storage device comprises a shell, a first partition plate, a moving cylinder, a moving rod, a first spring, a second spring and a limiting device, wherein the shell is fixedly connected to the front side and the rear side of the machine body, the first partition plate is fixedly connected to the inner side of the shell, the moving cylinder is connected to the inner side of the first partition plate in a sliding mode, the moving rod is connected to the inner side of the moving cylinder in a sliding mode, the second spring is sleeved to the outer axial side of the moving cylinder, and the limiting device is arranged on the outer axial side of the moving rod.

Further, limiting device's structure includes restriction piece, fixed frame and third spring, the axial outside of motion pole and be provided with the restriction piece at the upside of first baffle, the outside sliding connection of restriction piece has fixed frame, fixed frame is fixed connection through the inside wall of rectangle piece with the shell, fixedly connected with third spring between restriction piece and the fixed frame, set up on the motion pole and restrict the corresponding lug of piece.

When the magnetic base broke down because of inside spare part loss or because of external factors, the electric current of the inside change of magnetic base breaks off suddenly, make its magnetic field force disappear, then the second baffle promotes first magnetic block upward movement under the effect of fourth spring force, because first magnetic block is fixed connection with a motion section of thick bamboo, make a motion section of thick bamboo compress first spring, the second spring, then at first spring, lug on the motion pole breaks through the restriction piece under the effect of second spring force, quick upward movement, make the motion pole press the push switch of upside, because push switch is electric connection with the rig, and then control rig stop work.

Further, controlling means includes first magnetic block, second baffle, guide bar, fourth spring, aggregate unit and electric installation, the first magnetic block of axial outside fixedly connected with of a motion section of thick bamboo, the downside of first magnetic block is provided with the second baffle, the inboard sliding connection of second baffle has the guide bar, the guide bar is fixed connection with the inside end lateral wall of shell, the fourth spring has been cup jointed in the axial outside of guide bar, the upside of second baffle and be provided with aggregate unit in the outside of first magnetic block, aggregate unit's upside is provided with electric installation.

Further, aggregate unit's structure includes rack bar, cam, rack bar, fifth spring and third baffle, the inside wall of shell is connected for rotating with the rack bar through square piece, the rack bar is close to one side fixedly connected with cam of first magnetic force piece, one side meshing that the rack bar is close to a motion section of thick bamboo has the rack bar, the outside sliding connection of rack bar has the third baffle, the third baffle is fixed connection with the inside wall of shell, the fifth spring has been cup jointed in the axial outside of rack bar.

Further, electric device's structure includes second magnetic block and first coil, the upside fixedly connected with second magnetic block of rack bar, the upside of second magnetic block is provided with first coil, first coil and the inside lateral wall of going up of shell are fixed connection.

Starting the machine body to enable the magnetic base to be electrified with variable current so as to generate magnetic field force, fixing the magnetic base drill on the metal workpiece in a strong mode, then starting the drilling machine to drill the metal workpiece, and meanwhile attracting the first magnetic block by the strong magnetic field force to enable the first magnetic block to push the second partition plate, wherein the fourth spring is in a compressed state; when the drilling machine is started, current is also introduced into the first coil, so that the first coil generates magnetic field force which is attracted with the second magnetic block after the current is introduced, the second magnetic block is further driven to move upwards, the rack bar is driven to synchronously move upwards along with the second magnetic block due to the fact that the second magnetic block is fixedly connected with the rack bar, and then the rack bar is meshed with the driving cam, so that the driving cam rotates 90 degrees and is separated from the second partition plate;

further, dispersion devices include fixed block, linkage, supporting shoe and pulling force device, the inside end lateral wall fixedly connected with fixed block of shell, the inboard of fixed block rotates and is connected with the linkage, the downside fixedly connected with supporting shoe of linkage, the upside fixedly connected with pulling force device of linkage.

Further, the structure of the tension device comprises a rope, a pulley, a connecting column and a connecting plate, the connecting column is fixedly connected to the upper side of the connecting rod group, the connecting plate is fixedly connected to the front inner side wall of the shell, the pulley is rotatably connected to the lower side of the connecting plate, the rope is fixedly connected between the connecting column and the moving rod, and the rope penetrates through the pulley.

In the motion pole upward movement, motion pole pulling rope, make the rope pass through the outside motion of the effect pulling spliced pole of pulley, because spliced pole and linkage be fixed connection, make the spliced pole drive the linkage and outwards expand, because the downside fixedly connected with of linkage distributes even supporting shoe, and set up the fluting corresponding with the supporting shoe on the shell, make the supporting shoe follow the linkage and outwards expand fast, because the supporting shoe outwards expands the back, the magnetic drill increases suddenly with metal work's area of contact, and then realized the purpose that can stabilize the magnetic drill, thereby reach and prevent that the magnetic drill from empting, the effect of aversion.

Further, the main body device comprises a magnetic base and a drilling machine, the lower side of the machine body is fixedly connected with the magnetic base, and the upper side of the machine body is fixedly connected with the drilling machine.

Furthermore, the drilling machine further comprises a press switch, the press switch is arranged on the upper side of the moving rod and fixedly connected with the upper side wall inside the shell, and the press switch is electrically connected with the drilling machine.

Compared with the prior art, the invention provides the magnetic drill with the drill bit running stably and without displacement, which has the following beneficial effects:

1. this magnetic drill without shifting drill bit operates steadily, through the mating reaction between first coil, second magnetic block, rack bar, first magnetic block, cam and the second baffle, and then realized guaranteeing that first magnetic block is at the magnetic drill normal operating time, the purpose that first magnetic block can not be to the powerful promotion of a motion section of thick bamboo to the effect of device reliability has been reached.

2. This magnetic drill without shifting bit operates steadily, through the second baffle, the fourth spring, first magnetic block, a motion section of thick bamboo, first spring, the second spring, the motion pole, restriction piece and press the cooperation between the switch, and then realized can the quick control rig stop work's when breaking down purpose, thereby solved traditional magnetic drill and having broken down, when fixed magnetic field power disappears suddenly, can't carry out quick braking to the rig, and then lead to the rig still high-speed rotation after losing the stationary force, make it damage metal work piece easily, thereby cause the condemned problem of metal work piece.

3. This magnetic drill seat that drill bit operates steadily and does not shift bit, through the motion pole, the rope, the pulley, the spliced pole, the mating reaction between linkage and the supporting shoe, and then realized the mesh that can stabilize the magnetic drill seat, thereby reach and prevent that the magnetic drill seat from empting, the effect of aversion, and then solved traditional magnetic drill seat and relied on the electric current that the base changes completely to produce magnetic field force, fix it on metal work, but the magnetic drill seat exists and leads to the electric current of base change to break off suddenly because of inside part loss or external factor, the fixed force that relies on magnetic field disappears suddenly and the rig is still in high-speed moving's situation, make under this situation, the magnetic drill seat takes place to empty easily, the aversion, thereby cause the problem that has the potential safety hazard, thereby reach the purpose of steady operation.

Drawings

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

FIG. 2 is a schematic perspective view of the housing of the present invention;

FIG. 3 is a schematic sectional perspective view of the housing of the present invention;

FIG. 4 is a schematic perspective view of an electrical device according to the present invention;

FIG. 5 is a perspective view of a power storage device of the present invention;

FIG. 6 is a schematic perspective view of a control device according to the present invention;

FIG. 7 is a schematic perspective view of a dispersing device according to the present invention;

fig. 8 is a schematic perspective view of the tension device of the present invention.

In the figure: 1. a body; 2. a power storage device; 21. a housing; 22. a first separator; 23. a motion cylinder; 24. a motion bar; 25. a first spring; 26. a second spring; 27. a restriction device; 271. a limiting block; 272. a fixing frame; 273. a third spring; 3. a control device; 31. a first magnetic block; 32. a second separator; 33. a guide bar; 34. a fourth spring; 35. a linkage device; 351. a gear lever; 352. a cam; 353. a rack bar; 354. a fifth spring; 355. a third partition plate; 36. an electrical device; 361. a second magnetic block; 362. a first coil; 4. a dispersing device; 41. a fixed block; 42. a linkage; 43. a support block; 44. a tension device; 441. a rope; 442. a pulley; 443. connecting columns; 444. a connecting plate; 5. a main body device; 51. a magnetic base; 52. a drilling machine; 6. the switch is pressed.

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.

Examples

Referring to fig. 1-8, a magnetic drill includes a machine body 1, a power accumulating device 2 fixedly connected to the front and rear sides of the machine body 1, a control device 3 and a dispersing device 4 disposed inside the power accumulating device 2, and a main body device 5 fixedly mounted on the upper and lower sides of the machine body 1;

the power storage device 2 comprises a shell 21, a first partition plate 22, a movement cylinder 23, a movement rod 24, a first spring 25, a second spring 26 and a limiting device 27, the shell 21 is fixedly connected to the front side and the rear side of the machine body 1, the first partition plate 22 is fixedly connected to the inner side of the shell 21, the movement cylinder 23 is connected to the inner side of the first partition plate 22 in a sliding mode, the movement rod 24 is connected to the inner side of the movement cylinder 23 in a sliding mode, the second spring 26 is sleeved on the axial outer side of the movement cylinder 23, and the limiting device 27 is arranged on the axial outer side of the movement rod 24.

Further, the structure of the limiting device 27 includes a limiting block 271, a fixing frame 272 and a third spring 273, the limiting block 271 is disposed on the outer side of the moving rod 24 in the axial direction and on the upper side of the first partition 22, the fixing frame 272 is slidably connected to the outer side of the limiting block 271, the fixing frame 272 is fixedly connected to the inner side wall of the housing 21 through a rectangular block, the third spring 273 is fixedly connected between the limiting block 271 and the fixing frame 272, and a protruding block corresponding to the limiting block 271 is disposed on the moving rod 24.

When the magnetic base 51 is damaged due to internal parts or fails due to external factors, the current changed inside the magnetic base 51 is suddenly cut off, so that the magnetic field force disappears, then the second partition plate 32 pushes the first magnetic block 31 to move upwards under the action of the spring force of the fourth spring 34, because the first magnetic block 31 is fixedly connected with the moving cylinder 23, the moving cylinder 23 compresses the first spring 25 and the second spring 26, then the bump on the moving rod 24 breaks through the limiting block 271 under the action of the spring forces of the first spring 25 and the second spring 26, and moves upwards quickly, so that the moving rod 24 presses the upper press switch 6, and because the press switch 6 is electrically connected with the drilling machine 52, the drilling machine 52 is controlled to stop working.

Further, the control device 3 includes a first magnetic block 31, a second partition plate 32, a guide rod 33, a fourth spring 34, a linkage device 35 and an electrical device 36, the first magnetic block 31 is fixedly connected to the axial outer side of the motion cylinder 23, the second partition plate 32 is arranged on the lower side of the first magnetic block 31, the guide rod 33 is slidably connected to the inner side of the second partition plate 32, the guide rod 33 is fixedly connected to the inner bottom side wall of the housing 21, the fourth spring 34 is sleeved on the axial outer side of the guide rod 33, the linkage device 35 is arranged on the upper side of the second partition plate 32 and on the outer side of the first magnetic block 31, and the electrical device 36 is arranged on the upper side of the linkage device 35.

Further, the linkage 35 structurally comprises a gear rod 351, a cam 352, a rack rod 353, a fifth spring 354 and a third partition plate 355, the inner wall of the housing 21 is rotatably connected with the gear rod 351 through a square block, the cam 352 is fixedly connected to one side, close to the first magnetic block 31, of the gear rod 351, the rack rod 353 is meshed to one side, close to the moving cylinder 23, of the gear rod 351, the third partition plate 355 is slidably connected to the outer side of the rack rod 353, the third partition plate 355 is fixedly connected with the inner side wall of the housing 21, and the fifth spring 354 is sleeved on the axial outer side of the rack rod 353.

Further, the structure of the electric device 36 includes a second magnetic block 361 and a first coil 362, the upper side of the rack rod 353 is fixedly connected with the second magnetic block 361, the upper side of the second magnetic block 361 is provided with the first coil 362, and the first coil 362 is fixedly connected with the inner upper side wall of the housing 21.

Starting the machine body 1 to enable the magnetic base 51 to be electrified with variable current so as to generate magnetic field force, fixing the magnetic base drill on the metal workpiece in a strong manner, then starting the drilling machine 52 to drill the metal workpiece, and simultaneously attracting the first magnetic block 31 by the strong magnetic field force to enable the first magnetic block 31 to push the second partition plate 32, wherein the fourth spring 34 is in a compressed state; when the drilling machine 52 is started, current is also supplied to the interior of the first coil 362, so that the first coil 362 generates magnetic field force which is attracted to the second magnetic block 361 after the current is supplied, the second magnetic block 361 is further driven to move upwards, the rack rod 353 is enabled to synchronously move upwards along with the second magnetic block 361 due to the fact that the second magnetic block 361 is fixedly connected with the rack rod 353, and then the rack rod 353 is meshed with the cam 352 to drive the cam 352 to rotate 90 degrees to be separated from the second partition plate 32;

further, the dispersing device 4 includes a fixing block 41, a linkage 42, a supporting block 43 and a pulling device 44, the fixing block 41 is fixedly connected to the inner bottom side wall of the housing 21, the linkage 42 is rotatably connected to the inner side of the fixing block 41, the supporting block 43 is fixedly connected to the lower side of the linkage 42, and the pulling device 44 is fixedly connected to the upper side of the linkage 42.

Further, the structure of the pulling force means 44 includes a rope 441, a pulley 442, a connection column 443, and a connection plate 444, the connection column 443 is fixedly connected to the upper side of the linkage 42, the connection plate 444 is fixedly connected to the inner front side wall of the housing 21, the pulley 442 is rotatably connected to the lower side of the connection plate 444, the rope 441 is fixedly connected between the connection column 443 and the moving rod 24, and the rope 441 passes through the pulley 442.

In motion pole 24 upward movement, motion pole 24 pulling rope 441, make rope 441 pass through pulley 442's effect pulling spliced pole 443 outwards to move, because spliced pole 443 is fixed connection with linkage 42, make spliced pole 443 drive linkage 42 outwards to expand, because linkage 42's downside fixedly connected with distributes even supporting shoe 43, and set up the fluting corresponding with supporting shoe 43 on the shell 21, make supporting shoe 43 follow linkage 42 and expand outwards fast, because supporting shoe 43 expands the back outwards, the area of contact of magnetic drill and metal work piece increases suddenly, and then realized the purpose that can stabilize the magnetic drill, thereby reach the effect that prevents the magnetic drill and empty, shift.

Further, the main body device 5 includes a magnetic base 51 and a drilling machine 52, the magnetic base 51 is fixedly connected to the lower side of the machine body 1, and the drilling machine 52 is fixedly connected to the upper side of the machine body 1.

Furthermore, the drilling machine further comprises a press switch 6, the press switch 6 is arranged on the upper side of the moving rod 24, the press switch 6 is fixedly connected with the upper side wall inside the shell 21, and the press switch 6 is electrically connected with the drilling machine 52.

The specific use mode and function of the embodiment are as follows:

when the machine is used, firstly, the machine body 1 is started, so that the magnetic base 51 is electrified with variable current to generate magnetic field force, the magnetic base drill is strongly fixed on a metal workpiece, then, the drilling machine 52 is started to drill the metal workpiece, meanwhile, the strong magnetic field force attracts the first magnetic block 31, so that the first magnetic block 31 pushes the second partition plate 32, and at the moment, the fourth spring 34 is in a compressed state; when the drilling machine 52 is started, current is also supplied to the interior of the first coil 362, so that the first coil 362 generates magnetic field force which is attracted to the second magnetic block 361 after the current is supplied, the second magnetic block 361 is further driven to move upwards, the rack rod 353 is enabled to synchronously move upwards along with the second magnetic block 361 due to the fact that the second magnetic block 361 is fixedly connected with the rack rod 353, and then the rack rod 353 is meshed with the cam 352 to drive the cam 352 to rotate 90 degrees to be separated from the second partition plate 32;

Further, when motion bar 24 upward movement, motion bar 24 stimulates rope 441, make rope 441 through the outside motion of pulley 442 effect pulling spliced pole 443, because spliced pole 443 is fixed connection with linkage 42, make spliced pole 443 drive linkage 42 and outwards expand, because the downside fixedly connected with of linkage 42 distributes even supporting shoe 43, and set up the fluting corresponding with supporting shoe 43 on the shell 21, make supporting shoe 43 follow linkage 42 and expand outwards fast, because supporting shoe 43 outwards expands the back, the area of contact of magnetic drill and metal work piece increases suddenly, and then realized the purpose that can stabilize the magnetic drill, thereby reach the effect that prevents that the magnetic drill from empting, shifting.

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 a drill bit operates steadily and does not shift position magnetic drill, includes organism (1), its characterized in that: the front side and the rear side of the machine body (1) are both fixedly connected with a power storage device (2), a control device (3) and a dispersing device (4) are arranged in the power storage device (2), and main body devices (5) are fixedly arranged on the upper side and the lower side of the machine body (1);

the power storage device (2) comprises a shell (21), a first partition plate (22), a moving cylinder (23), a moving rod (24), a first spring (25), a second spring (26) and a limiting device (27), wherein the shell (21) is fixedly connected to the front side and the rear side of the machine body (1), the first partition plate (22) is fixedly connected to the inner side of the shell (21), the moving cylinder (23) is connected to the inner side of the first partition plate (22) in a sliding mode, the moving rod (24) is connected to the inner side of the moving cylinder (23) in a sliding mode, the second spring (26) is sleeved to the outer axial side of the moving cylinder (23), and the limiting device (27) is arranged on the outer axial side of the moving rod (24).

2. The magnetic drill bit as claimed in claim 1, wherein the drill bit is operable to move smoothly without displacement, and the magnetic drill bit is characterized in that: the structure of restricting device (27) includes restriction piece (271), fixed frame (272) and third spring (273), the axial outside of motion pole (24) and be provided with restriction piece (271) at the upside of first baffle (22), the outside sliding connection of restriction piece (271) has fixed frame (272), fixed frame (272) is fixed connection through the inside wall of rectangle piece and shell (21), fixedly connected with third spring (273) between restriction piece (271) and fixed frame (272), set up on motion pole (24) and restrict the corresponding lug of piece (271).

3. The magnetic drill bit as claimed in claim 1, wherein the drill bit is operable to move smoothly without displacement, and the magnetic drill bit is characterized in that: control device (3) include first magnetic block (31), second baffle (32), guide bar (33), fourth spring (34), aggregate unit (35) and electric installation (36), the first magnetic block (31) of the axial outside fixedly connected with of motion section of thick bamboo (23), the downside of first magnetic block (31) is provided with second baffle (32), the inboard sliding connection of second baffle (32) has guide bar (33), guide bar (33) are fixed connection with shell (21) inside end lateral wall, fourth spring (34) have been cup jointed in the axial outside of guide bar (33), the upside of second baffle (32) and be provided with aggregate unit (35) in the outside of first magnetic block (31), the upside of aggregate unit (35) is provided with electric installation (36).

4. The magnetic drill according to claim 3, wherein the drill bit runs smoothly without displacement, and is characterized in that: the structure of linkage device (35) includes gear pole (351), cam (352), rack bar (353), fifth spring (354) and third baffle (355), the inside wall of shell (21) is connected for rotating through square piece and gear pole (351), one side fixedly connected with cam (352) that gear pole (351) are close to first magnetic force piece (31), one side meshing that gear pole (351) are close to motion section of thick bamboo (23) has rack bar (353), the outside sliding connection of rack bar (353) has third baffle (355), third baffle (355) are fixed connection with the inside wall of shell (21), the axial outside of rack bar (353) has cup jointed fifth spring (354).

5. The magnetic drill bit as claimed in claim 4, wherein the drill bit is operable to move smoothly without displacement, and the magnetic drill bit is characterized in that: the structure of electric device (36) includes second magnetic block (361) and first coil (362), upside fixedly connected with second magnetic block (361) of rack bar (353), the upside of second magnetic block (361) is provided with first coil (362), first coil (362) are fixed connection with the inside lateral wall that goes up of shell (21).

6. The magnetic drill bit as claimed in claim 1, wherein the drill bit is operable to move smoothly without displacement, and the magnetic drill bit is characterized in that: dispersing device (4) are including fixed block (41), linkage (42), supporting shoe (43) and tension device (44), the inside bottom lateral wall fixedly connected with fixed block (41) of shell (21), the inboard rotation of fixed block (41) is connected with linkage (42), the downside fixedly connected with supporting shoe (43) of linkage (42), the upside fixedly connected with tension device (44) of linkage (42).

7. The magnetic drill bit as claimed in claim 6, wherein the drill bit is operable to move smoothly without displacement, and the magnetic drill bit is characterized in that: the structure of the tension device (44) comprises a rope (441), a pulley (442), a connecting column (443) and a connecting plate (444), wherein the connecting column (443) is fixedly connected to the upper side of the linkage (42), the connecting plate (444) is fixedly connected to the front inner side wall of the shell (21), the pulley (442) is rotatably connected to the lower side of the connecting plate (444), the rope (441) is fixedly connected between the connecting column (443) and the moving rod (24), and the rope (441) penetrates through the pulley (442).

8. The magnetic drill bit as claimed in claim 1, wherein the drill bit is operable to move smoothly without displacement, and the magnetic drill bit is characterized in that: the main body device (5) comprises a magnetic base (51) and a drilling machine (52), the magnetic base (51) is fixedly connected to the lower side of the machine body (1), and the drilling machine (52) is fixedly connected to the upper side of the machine body (1).

9. The magnetic drill bit as claimed in claim 8, wherein the drill bit is operable to move smoothly without displacement, and the magnetic drill bit further comprises: the drilling machine is characterized by further comprising a press switch (6), the press switch (6) is arranged on the upper side of the moving rod (24), the press switch (6) is fixedly connected with the upper side wall inside the shell (21), and the press switch (6) is electrically connected with the drilling machine (52).