CN113043051A

CN113043051A - Electric drill equipment capable of automatically adjusting speed according to hardness

Info

Publication number: CN113043051A
Application number: CN202110247845.0A
Authority: CN
Inventors: 高远
Original assignee: Nanjing Faenya Furniture Co ltd
Current assignee: Nanjing Faenya Furniture Co ltd
Priority date: 2021-03-06
Filing date: 2021-03-06
Publication date: 2021-06-29

Abstract

The invention discloses electric drill equipment capable of automatically adjusting speed according to hardness, which comprises a moving box, wherein a reciprocating pushing cavity with an upward opening and a rightward opening is arranged in the moving box, the lower wall of the reciprocating pushing cavity is connected with a clamping box in a left-right sliding way, the lower wall of the reciprocating pushing cavity is connected with a hinged plate positioned on the left side of the clamping box in a left-right sliding way, the lower wall of the reciprocating pushing cavity is rotatably connected with a crank shaft positioned on the left side of the hinged plate, the right end surface of the hinged plate is fixedly connected with a spring block, a spring cavity is arranged in the spring block, the right wall of the spring cavity is communicated with a sliding cavity with a right opening, the invention can drive the drill bit to feed to one side at a constant speed and simultaneously carry out left-right reciprocating motion, thereby preventing the drill bit from being stuck while controlling the movement of the push block by the compressed state of the spring.

Description

Electric drill equipment capable of automatically adjusting speed according to hardness

Technical Field

The invention relates to the related field of electric drills, in particular to electric drill equipment capable of automatically adjusting speed according to hardness.

Background

The electric drill is a drilling machine using electricity as power, is an electric tool product with the largest demand, and often meets the problem that an object is hard and difficult to drill when the electric drill is used, at the moment, the rotating speed of a drill bit is usually required to be adjusted, so that the drilling operation is often suspended to be adjusted, and when the hardness of the object is difficult to determine, repeated adjustment is required, so that the time is greatly wasted, the conventional belt type transmission electric drill equipment is difficult to stably transmit, and generally does not have the function of anti-jamming.

Disclosure of Invention

In order to solve the problems, the electric drill equipment capable of automatically regulating speed according to hardness is designed in the embodiment and comprises a moving box, a reciprocating pushing cavity with an upward opening and a rightward opening is arranged in the moving box, a clamping box is connected to the lower wall of the reciprocating pushing cavity in a left-right sliding mode, a hinged plate located on the left side of the clamping box is connected to the lower wall of the reciprocating pushing cavity in a left-right sliding mode, a crankshaft located on the left side of the hinged plate is connected to the lower wall of the reciprocating pushing cavity in a rotating mode, a spring block is fixedly connected to the right end face of the hinged plate, a spring cavity is arranged in the spring block, the right wall of the spring cavity is communicated with a sliding cavity with the rightward opening, a clamping cavity with an upward opening is arranged in the clamping box, a bidirectional screw rod is connected to the left wall and right wall of the clamping, the left wall of the speed regulation cavity is communicated with a push block cavity with a leftward opening, the left wall and the right wall of the speed regulation cavity are rotatably connected with a driving shaft, the left wall and the right wall of the speed regulation cavity are rotatably connected with a driven shaft positioned on the upper side of the driving shaft, the outer circular surface of the driving shaft is fixedly connected with a driving belt pulley, the outer circular surface of the driven shaft is fixedly connected with a driven belt pulley, a belt capable of sliding left and right is wound between the driven belt pulley and the outer circular surface of the driving belt pulley, the right wall of the speed regulation cavity is fixedly connected with a screw block positioned on the upper side of the driving shaft, a screw block cavity with a leftward opening is arranged in the screw block, the right wall of the screw block cavity is rotatably connected with a screw rod, the front wall and the rear wall of the screw block cavity are slidably connected with an adjusting hinge rod extending left into the speed regulation cavity, the right wall of the speed regulation cavity, be equipped with the response piece chamber of opening left in the response piece, the preceding rear wall side to side sliding connection of response piece chamber has and extends to left the left response hinge bar in response piece chamber, the response hinge bar with it all articulates to adjust the hinge bar left end face has the promotion case, the promotion chamber that link up from top to bottom is equipped with in the promotion case, the belt runs through promote the chamber.

Preferably, the lower wall of the reciprocating pushing cavity is fixedly provided with a bidirectional power device located on the lower side of the crank shaft, the lower end face of the crank shaft is in power connection with the upper end face of the bidirectional power device, the top end of the outer circular face of the crank shaft is fixedly connected with a crank, the lower end face of the crank is rotatably connected with a connecting shaft extending upwards to the upper side of the crank, the top end of the outer circular face of the connecting shaft is rotatably connected with a connecting rod, and the right end face of the connecting rod is hinged to the left end face.

Preferably, the front wall and the rear wall of the spring cavity are connected with sliding plates in a left-right sliding mode, the left end face of each sliding plate is fixedly connected with an induction spring between the left walls of the spring cavity, the right end face of each sliding plate is fixedly connected with a connecting block which penetrates through the corresponding sliding cavity and extends to the right side of the corresponding spring block, and the right end face of each connecting block is fixedly connected with the left end face of the corresponding clamping box.

Preferably, the excircle face thread connection of two-way screw rod has bilateral symmetry's the tight piece of clamp, the left and right sides press from both sides tight piece with screw thread between the two-way screw rod revolves to opposite, the two-way screw rod left end extends to left the tight case left side of clamp and left end face fixedly connected with handle, articulated slab right end face top fixedly connected with runs through the ejector pad chamber just extends to right the ejector pad in the speed governing intracavity.

Preferably, the right wall of the speed regulation cavity is fixedly provided with a belt wheel motor, the left end face of the belt wheel motor is in power connection with the right end face of the driving shaft, the right end face of the driven shaft is fixedly connected with a drill bit clamping device which extends rightwards to the right side of the drilling box, the drill bit clamping device is in rotating connection with the drilling box, and a drill bit is clamped in the drill bit clamping device.

But preferably, promote two upper and lower leading wheel chambeies that chamber left and right wall intercommunication was equipped with bilateral symmetry, four the wall all rotates before the leading wheel chamber be connected with belt left and right sides terminal surface sliding connection's leading wheel, the fixed three contact inductor that is equipped with from a left side to right evenly distributed of response piece chamber upper wall, the fixed adjustment motor that is equipped with of screw piece chamber right wall, the adjustment motor left end face with screw rod right-hand member face power is connected, be equipped with the interior screw cavity of opening right in the regulation hinge bar, the screw rod stretch into to left the interior screw cavity just with interior screw cavity threaded connection.

Preferably, the right ends of the outer circular surfaces of the screw rod and the transmission screw rod are fixedly connected with transmission belt wheels, the right end of the upper wall of the cavity of the screw rod is communicated with a belt wheel cavity with an upward opening, a transmission belt penetrating through the belt wheel cavity is wound between the outer circular surfaces of the transmission belt wheels at the upper side and the lower side, the left side of the transmission screw rod is provided with a sliding block in sliding connection with the front wall and the rear wall left and right, the sliding block is internally provided with a sliding block threaded cavity with a rightward opening, the transmission screw rod extends into the sliding block threaded cavity leftwards and is in threaded connection with the sliding block threaded cavity, the left side of the sliding block is provided with a clutch block, the left end surface of the clutch block is fixedly connected with a hemispherical push block, the clutch block is internally provided with a clutch cavity with a rightward opening, the sliding block extends into the clutch cavity leftwards and is in sliding connection with the upper wall and, the clutch mechanism is characterized in that a magnetic block located on the lower side of the clutch spring is fixedly arranged on the left wall of the clutch cavity, and an electromagnet located on the lower side of the clutch spring is fixedly arranged on the left end face of the sliding block.

Preferably, a bevel gear cavity with a leftward opening is formed in the lower side of the reciprocating pushing cavity, a pushing screw rod extending leftward to the left side of the moving box is rotatably connected to the right wall of the bevel gear cavity, the lower end face of the bidirectional power device is in power connection with a power shaft extending downward into the bevel gear cavity, a driving bevel gear is fixedly connected to the lower end face of the power shaft, a driven bevel gear in meshing transmission with the driving bevel gear is fixedly connected to the right end of the outer circular face of the pushing screw rod, a fixed seat is arranged on the left side of the moving box, a left pushing thread cavity and a right pushing thread cavity which are communicated are arranged in the fixed seat, and the pushing screw rod penetrates through the pushing thread cavity.

The invention has the beneficial effects that: the invention can drive the drill bit to feed to one side at a constant speed and simultaneously carry out left-right reciprocating motion, thereby preventing the drill bit from being clamped, and simultaneously, the movement of the push block is controlled by the compression state of the spring, thereby accurately adjusting the rotating speed of the drill bit.

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 an enlarged schematic view of a in fig. 1.

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

Detailed Description

The invention will now be described in detail with reference to fig. 1-3, 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 electric drill equipment capable of automatically adjusting speed according to hardness comprises a moving box 11, wherein a reciprocating pushing cavity 12 with an upward opening and a rightward opening is arranged in the moving box 11, a clamping box 13 is connected to the lower wall of the reciprocating pushing cavity 12 in a left-right sliding manner, a hinged plate 17 positioned on the left side of the clamping box 13 is connected to the lower wall of the reciprocating pushing cavity 12 in a left-right sliding manner, a crankshaft 58 positioned on the left side of the hinged plate 17 is connected to the lower wall of the reciprocating pushing cavity 12 in a rotating manner, a spring block 63 is fixedly connected to the right end face of the hinged plate 17, a spring cavity 65 is arranged in the spring block 63, a sliding cavity 67 with a rightward opening is communicated to the right wall of the spring cavity 65, a clamping cavity 14 with an upward opening is arranged in the clamping box 13, a bidirectional screw 15 is connected to the left wall and the right wall of the clamping cavity 14 in a, a speed regulation cavity 22 is arranged in the drilling box 21, the left wall of the speed regulation cavity 22 is communicated with a push block cavity 20 with a leftward opening, the left wall and the right wall of the speed regulation cavity 22 are rotatably connected with a driving shaft 28, the left wall and the right wall of the speed regulation cavity 22 are rotatably connected with a driven shaft 24 positioned on the upper side of the driving shaft 28, the outer circular surface of the driving shaft 28 is fixedly connected with a driving belt wheel 29, the outer circular surface of the driven shaft 24 is fixedly connected with a driven belt wheel 23, a belt 30 capable of sliding left and right is wound between the driven belt wheel 23 and the outer circular surface of the driving belt wheel 29, the right wall of the speed regulation cavity 22 is fixedly connected with a screw block 54 positioned on the upper side of the driving shaft 28, a screw block cavity 53 with a leftward opening is arranged in the screw block 54, the right wall of the screw block cavity 53 is rotatably connected with a screw 52, and the front wall and the, speed governing chamber 22 right side wall rotates to be connected with and is located the drive screw 44 of screw piece 54 upside, speed governing chamber 22 right side wall rotates to be connected with and is located drive screw 44 with response piece 36 between the driven shaft 24, be equipped with the response piece chamber 37 of opening left in the response piece 36, the preceding back wall horizontal sliding connection in response piece chamber 37 has and extends to left the left response articulated rod 35 in response piece chamber 37, response articulated rod 35 with it all articulates to adjust articulated rod 56 left end face has a propelling movement case 31, be equipped with the promotion chamber 32 that link up from top to bottom in the propelling movement case 31, belt 30 runs through promote chamber 32.

Advantageously, a bidirectional power device 57 is fixedly arranged on the lower wall of the reciprocating pushing cavity 12, the lower end surface of the crank shaft 58 is in power connection with the upper end surface of the bidirectional power device 57, a crank 59 is fixedly connected to the top end of the outer circular surface of the crank shaft 58, a connecting shaft 60 extending upwards to the upper side of the crank 59 is rotatably connected to the lower end surface of the crank 59, a connecting rod 61 is rotatably connected to the top end of the outer circular surface of the connecting shaft 60, and the right end surface of the connecting rod 61 is hinged with the left end surface of the hinged plate 17.

Advantageously, a sliding plate 66 is slidably connected to the front and rear walls of the spring chamber 65 from left to right, an induction spring 64 is fixedly connected between the left end surface of the sliding plate 66 and the left wall of the spring chamber 65, a connecting block 62 is fixedly connected to the right end surface of the sliding plate 66, penetrates through the sliding chamber 67 and extends to the right of the spring block 63, and the right end surface of the connecting block 62 is fixedly connected to the left end surface of the clamping box 13.

Beneficially, the outer circular surface of the bidirectional screw 15 is in threaded connection with bilaterally symmetrical clamping blocks 16, the thread directions of the left and right clamping blocks 16 and the bidirectional screw 15 are opposite, the left end of the bidirectional screw 15 extends to the left side of the clamping box 13, the left end surface of the bidirectional screw is fixedly connected with a handle 19, and the top end of the right end surface of the hinged plate 17 is fixedly connected with a push block 18 which penetrates through the push block cavity 20 and extends to the right side into the speed regulation cavity 22.

Beneficially, the right wall of the speed regulation cavity 22 is fixedly provided with a belt wheel motor 27, the left end face of the belt wheel motor 27 is in power connection with the right end face of the driving shaft 28, the right end face of the driven shaft 24 is fixedly connected with a drill bit clamping device 25 which extends rightwards to the right side of the drilling box 21, the drill bit clamping device 25 is rotatably connected with the drilling box 21, and a drill bit 26 is clamped in the drill bit clamping device 25.

Beneficially, the left wall and the right wall of the pushing cavity 32 are communicated with an upper guide wheel cavity 33 and a lower guide wheel cavity 33 which are bilaterally symmetrical, the front wall and the rear wall of each of the four guide wheel cavities 33 are rotatably connected with guide wheels 34 which are slidably connected with the end surfaces of the left side and the right side of the belt 30, the upper wall of the sensing block cavity 37 is fixedly provided with three contact sensors 38 which are uniformly distributed from left to right, the right wall of the screw block cavity 53 is fixedly provided with an adjusting motor 51, the left end surface of the adjusting motor 51 is in power connection with the right end surface of the screw 52, an internal thread cavity 55 with a right opening is arranged in the adjusting hinge rod 56, and the screw 52 extends into the internal thread cavity 55 leftwards and is in threaded.

Beneficially, the right ends of the outer circular surfaces of the screw 52 and the transmission screw 44 are fixedly connected with a transmission belt wheel 49, the right end of the upper wall of the screw block cavity 53 is communicated with a belt wheel cavity 50 with an upward opening, a transmission belt 48 penetrating through the belt wheel cavity 50 is wound between the outer circular surfaces of the transmission belt wheels 49 at the upper side and the lower side, the left side of the transmission screw 44 is provided with a sliding block 68 slidably connected with the front wall and the rear wall of the driving shaft 222 in the left-right direction, a sliding block threaded cavity 43 with a rightward opening is arranged in the sliding block 68, the transmission screw 44 extends into the sliding block threaded cavity 43 in the left direction and is in threaded connection with the sliding block threaded cavity 43, the left side of the sliding block 68 is provided with a clutch block 39, the left end surface of the clutch block 39 is fixedly connected with a hemispherical push block 40, a clutch cavity 41 with a rightward opening is arranged in the clutch block 39, the sliding block 68 extends, a clutch spring 42 is fixedly connected between the left wall of the clutch cavity 41 and the left end face of the sliding block 68, a magnetic block 47 positioned on the lower side of the clutch spring 42 is fixedly arranged on the left wall of the clutch cavity 41, and an electromagnet 45 positioned on the lower side of the clutch spring 42 is fixedly arranged on the left end face of the sliding block 68.

Advantageously, a bevel gear cavity 74 with a leftward opening is formed in the lower side of the reciprocating pushing cavity 12, a pushing screw 73 extending leftward to the left side of the moving box 11 is rotatably connected to the right wall of the bevel gear cavity 74, a power shaft 70 extending downward into the bevel gear cavity 74 is power-connected to the lower end face of the bidirectional power device 57, a driving bevel gear 72 is fixedly connected to the lower end face of the power shaft 70, a driven bevel gear 71 in meshing transmission with the driving bevel gear 72 is fixedly connected to the right end of the outer circular face of the pushing screw 73, a fixed seat 75 is formed in the left side of the moving box 11, a left-right through pushing threaded cavity 76 is formed in the fixed seat 75, and the pushing screw 73 penetrates through the pushing threaded cavity 76 and extends leftward to the left side of the.

The use steps herein are described in detail below with reference to fig. 1-3:

in the initial state: the belt 30 is located at the left limit transmission position between the driving pulley 29 and the driven pulley 23, the sensing spring 64 is in a relaxed state, the electromagnet 45 and the magnet 47 are in an adsorption and attachment state, the clutch spring 42 is in a tightened state, and the sensing hinge rod 35 is located at the left side of the left end touch sensor 38 to fix the fixed seat 75.

In operation, the belt wheel motor 27 and the bidirectional power device 57 are started, the rotation of the crank shaft 58 is driven by the starting of the bidirectional power device 57, the crank 59 is driven to rotate around the crank shaft 58, the connecting rod 61 is driven to turn and swing by the rotation of the crank 59 through the connection of the connecting shaft 60, the hinged plate 17 is pushed to reciprocate left and right through the hinging of the connecting rod 61 and the hinged plate 17, the spring block 63 is driven to move left and right through the left and right movement of the hinged plate 17, the clamping box 13 is driven to move left and right through the connection of the connecting block 62, the power shaft 70 is driven to rotate through the starting of the bidirectional power device 57, the driving bevel gear 72 is driven to rotate through the rotation of the power shaft 70, the pushing screw 73 is driven to rotate through the meshing transmission of the power shaft 70 and the driven bevel gear 71, and the pushing screw 73 is driven to rotate through the rotation of the pushing screw 73 and moving, at this time, the driving shaft 28 is driven to rotate by the starting of the belt wheel motor 27, so as to drive the driving belt wheel 29 to rotate, the driven belt wheel 23 is driven to rotate by the driving belt of the belt 30 by the rotation of the driving belt wheel 29, so as to drive the driven shaft 24 to rotate, so as to drive the drill bit clamping device 25 to rotate and drive the drill bit 26 to rotate, so as to perform uniform drilling, at this time, when the hardness of an object is too high and the object is difficult to drill and needs to adjust the rotating speed, the clamping box 13 is difficult to move continuously to the right, so as to drive the sliding plate 66 to tighten the induction spring 64, at this time, the pushing block 18 is driven to further extend into the speed adjusting cavity 22 by the difficult movement of the right of the clamping box 13 so as to push the upper end of the pushing box 31 to incline to the right, the upper end of the belt, at this time, the upper end of the push box 31 is inclined to the right, so that the sensing hinge rod 35 is pushed to move to the right through the hinge to contact with the contact sensor 38 at the left end, the adjusting motor 51 is started after the contact sensor 38 is contacted, so that the screw rod 52 is driven to rotate, the adjusting hinge rod 56 is driven to move to the right through the threaded connection between the screw rod 52 and the internal threaded cavity 55 through the rotation of the screw rod 52, so that the lower end of the push box 31 is pulled to move to the right, so that the connection between the belt 30 and the driving pulley 29 is adjusted to the right, the transmission ratio between the driven pulley 23 and the driving pulley 29 is reduced, the rotation speed of the drill bit 26 is driven to be.

When the drilling speed needs to be increased due to the fact that the drilled object is soft, the adjusting motor 51 is started, the electromagnet 45 is turned off, the screw rod 52 is driven to rotate by starting the adjusting motor 51, the adjusting hinge rod 56 is driven to move leftwards through threaded connection, the lower transmission belt wheel 49 is driven to rotate through rotation of the screw rod 52, the upper transmission belt wheel 49 is driven to rotate through connection of the transmission belt 48, the transmission screw rod 44 is driven to rotate, the sliding block 68 is driven to move leftwards through threaded connection of the transmission screw rod 44 and the sliding block threaded cavity 43, meanwhile, the clutch block 39 is driven to move leftwards through the thrust of the clutch spring 42 due to disconnection of the electromagnet 45 and the magnetic block 47, the hemispherical push block 40 is driven to move leftwards, the push box 31 is driven to move leftwards through leftward movement of the hemispherical push block 40 and the adjusting hinge rod 56, and the belt 30 is pushed leftwards so that the transmission ratio between the driven belt wheel, thereby causing the drill bit 26 to rotate faster and thereby facilitate drilling of softer objects.

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.

Claims

1. The utility model provides an electric drill equipment according to hardness automatic speed governing, is including removing the case, its characterized in that: a reciprocating pushing cavity with an upward opening and a rightward opening is arranged in the moving box, the lower wall of the reciprocating pushing cavity is connected with a clamping box in a left-right sliding manner, the lower wall of the reciprocating pushing cavity is connected with a hinged plate positioned on the left side of the clamping box in a left-right sliding manner, the lower wall of the reciprocating pushing cavity is connected with a crankshaft positioned on the left side of the hinged plate in a rotating manner, the right end surface of the hinged plate is fixedly connected with a spring block, a spring cavity is arranged in the spring block, the right wall of the spring cavity is communicated with a sliding cavity with a rightward opening, a clamping cavity with an upward opening is arranged in the clamping box, the left wall and the right wall of the clamping cavity are connected with a bidirectional screw in a rotating manner, a drilling box positioned on the front side of the bidirectional screw is placed in the clamping cavity, a speed regulating cavity is arranged, the speed regulation device is characterized in that the left wall and the right wall of the speed regulation cavity are rotatably connected with a driven shaft positioned on the upper side of the driving shaft, the outer circular surface of the driving shaft is fixedly connected with a driving belt pulley, the outer circular surface of the driven shaft is fixedly connected with a driven belt pulley, a belt capable of sliding left and right is wound between the driven belt pulley and the outer circular surface of the driving belt pulley, the right wall of the speed regulation cavity is fixedly connected with a screw block positioned on the upper side of the driving shaft, a screw block cavity with a leftward opening is arranged in the screw block, the right wall of the screw block cavity is rotatably connected with a screw, the front wall and the rear wall of the screw block cavity are rotatably connected with an adjusting hinge rod extending left into the speed regulation cavity, the right wall of the speed regulation cavity is rotatably connected with a transmission screw positioned on the upper side of the screw block, the right wall of, the left and right sliding connection of wall extends to left behind the response piece chamber the left response hinge bar in response piece chamber, the response hinge bar with it all articulates to adjust the hinge bar left end face has the promotion case, the promotion chamber that link up from top to bottom is equipped with in the promotion case, the belt runs through promote the chamber.

2. An electric drill apparatus for automatically adjusting speed according to hardness according to claim 1, wherein: reciprocal promotion chamber lower wall is fixed to be equipped with and is located the two-way power device of crank axle downside, the crank axle down the terminal surface with two-way power device up end power is connected, the outer disc top end fixedly connected with crank of crank axle, the terminal surface rotates to be connected with and upwards extends to the connecting axle of crank upside under the crank, the outer disc top of connecting axle rotates and is connected with the connecting rod, the connecting rod right-hand member face with it is articulated between the articulated board left end face.

3. An electric drill apparatus for automatically adjusting speed according to hardness according to claim 1, wherein: the spring clamping box comprises a spring cavity, a spring block and a connecting block, wherein the spring cavity is provided with a front wall and a rear wall, the front wall and the rear wall of the spring cavity are connected with a sliding plate in a left-right sliding mode, the left end face of the sliding plate is fixedly connected with an induction spring between the left wall of the spring cavity, the right end face of the sliding plate is fixedly connected with the connecting block which penetrates through the sliding cavity and extends to the right side of the spring block.

4. An electric drill apparatus for automatically adjusting speed according to hardness according to claim 1, wherein: the outer disc thread connection of two-way screw rod has bilateral symmetry's the tight piece of clamp, the left and right sides press from both sides tight piece with screw thread between the two-way screw rod revolves to opposite, the two-way screw rod left end extends to left the tight case left side of clamp and left end face fixedly connected with handle, articulated slab right-hand member face top fixedly connected with runs through the ejector pad chamber just extends to right the ejector pad in the speed governing intracavity.

5. An electric drill apparatus for automatically adjusting speed according to hardness according to claim 1, wherein: the speed regulation cavity right wall is fixedly provided with a belt wheel motor, the left end face of the belt wheel motor is in power connection with the right end face of the driving shaft, the right end face of the driven shaft is fixedly connected with a drill bit clamping device which extends to the right side of the drilling box rightwards, the drill bit clamping device is connected with the drilling box in a rotating mode, and a drill bit is clamped in the drill bit clamping device.

6. An electric drill apparatus for automatically adjusting speed according to hardness according to claim 1, wherein: promote two upper and lower leading wheel chambeies that chamber left and right wall intercommunication was equipped with bilateral symmetry, four the leading wheel chamber is preceding the back wall all rotate be connected with belt left and right sides terminal surface sliding connection's leading wheel, the fixed three contact inductor that is equipped with from a left side to right evenly distributed of response piece chamber upper wall, the fixed adjustment motor that is equipped with of screw piece chamber right wall, adjustment motor left end face with screw rod right-hand member face power is connected, be equipped with the interior thread cavity of opening right in the regulation hinge bar, the screw rod stretch into to left the interior thread cavity just with interior thread cavity threaded connection.

7. An electric drill apparatus for automatically adjusting speed according to hardness according to claim 1, wherein: the right ends of the outer circular surfaces of the screw rod and the transmission screw rod are fixedly connected with transmission belt wheels, the right end of the upper wall of a cavity of the screw rod is communicated with a belt wheel cavity with an upward opening, a transmission belt penetrating through the belt wheel cavity is wound between the outer circular surfaces of the transmission belt wheels at the upper side and the lower side, the left side of the transmission screw rod is provided with a sliding block in sliding connection with the front wall and the rear wall left and right, a sliding block threaded cavity with a rightward opening is arranged in the sliding block, the transmission screw rod extends into the sliding block threaded cavity leftwards and is in threaded connection with the sliding block threaded cavity, the left side of the sliding block is provided with a clutch block, the left end surface of the clutch block is fixedly connected with a hemispherical push block, a clutch cavity with a rightward opening is arranged in the clutch block, the sliding block extends into the clutch cavity leftwards and is in sliding connection with the upper wall and, the clutch mechanism is characterized in that a magnetic block located on the lower side of the clutch spring is fixedly arranged on the left wall of the clutch cavity, and an electromagnet located on the lower side of the clutch spring is fixedly arranged on the left end face of the sliding block.

8. An electric drill apparatus for automatically adjusting speed according to hardness according to claim 1, wherein: the reciprocating pushing device is characterized in that a bevel gear cavity with a left opening is arranged on the lower side of the reciprocating pushing cavity, the right wall of the bevel gear cavity is rotatably connected with a pushing screw rod which extends leftwards to the left side of the moving box, a power shaft which extends downwards into the bevel gear cavity is connected with the lower end face of the two-way power device, a driving bevel gear is fixedly connected with the lower end face of the power shaft, a driven bevel gear which is meshed with the driving bevel gear is fixedly connected with the right end face of the outer circular face of the pushing screw rod, a fixed seat is arranged on the left side of the moving box, a left pushing thread cavity which is communicated with the left side and the right side is arranged.