CN113333811A

CN113333811A - Intelligent drilling machine

Info

Publication number: CN113333811A
Application number: CN202110538781.XA
Authority: CN
Inventors: 赵祥峰
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-05-18
Filing date: 2021-05-18
Publication date: 2021-09-03

Abstract

An intelligent drilling machine comprises a frame, an electric telescopic rod, a transverse plate, an electric drill body, a voltage-stabilized power supply, a drilling control circuit, a reset control mechanism and a load control mechanism; the sliding groove plates of the electric drill bodies are respectively sleeved in the sliding grooves of the transverse plate, the upper end of the electric telescopic rod is installed at the lower end of the rack, and the lower end of the electric telescopic rod is installed at the upper end of the transverse plate; the reset control mechanism comprises a trigger sub-circuit and a limiting rod assembly, the limiting rod is arranged at the lower end of one side of the transverse plate, and the upper end of the movable rod is sleeved in the lower end of the sleeve; the load control mechanism comprises a power generation coil, a magnet tube and a control sub-circuit, wherein the magnet tube is arranged on the outer side of a power output shaft of the electric drill body, and the power generation coil is arranged at the lower end of a shell of the electric drill body; the stabilized voltage power supply, the drilling control circuit, the trigger sub-circuit and the control sub-circuit are arranged in the element box and are electrically connected with the electric telescopic rod and the limiting rod assembly. The intelligent control system achieves the purpose of intelligent control, and effectively prevents the electric drill body from being damaged due to overlarge load.

Description

Intelligent drilling machine

Technical Field

The invention relates to the technical field of drilling machine equipment, in particular to an intelligent drilling machine.

Background

Drilling machines are a type of power tool that is commonly used. The existing drilling machine can only drill one part of a workpiece at a time due to the structural limitation. In practical situations, a plurality of holes need to be drilled transversely or longitudinally in one component, for example, a plurality of holes are drilled at certain intervals in a framework for fixing and welding railings and the like in the manufacturing process of the guardrail; because the existing drilling machine can only drill one open pore at a time, the problem of low working efficiency exists. In addition, after the existing drilling machine operates a drill bit to drill down an object and well drill a hole, the existing drilling machine controls the drill bit to move up or down manually (including manually controlling a power switch, controlling a motor reducing mechanism and the like to drive an electric drill body and the drill bit to move down or up), and the purpose of intelligent control cannot be achieved. Finally, the existing automatic electric drill does not have a load control function, that is, the speed of an electric mechanism (comprising an oil cylinder, an air cylinder or an electric screw mechanism and the like) driving the electric drill body and a drill bit drilling part is constant, so that the motor of the electric drill is damaged when a large load is met during drilling. Based on the above, it is particularly necessary to provide a gang drill drilling machine which can drill a plurality of holes at one time, automatically control the drill bit to move downwards or upwards, and automatically adjust the load during drilling.

Disclosure of Invention

The invention provides an intelligent drilling machine which can drill a plurality of holes on a part at one time under the combined action of related mechanisms, can automatically control the drilling down and resetting of a drill bit in a one-key mode, can control the load of a motor during drilling, has wider application range and brings convenience to users, and can play a good protection role on the motor.

The technical scheme adopted by the invention for solving the technical problems is as follows:

an intelligent drilling machine comprises a frame, an electric telescopic rod, a transverse plate, an electric drill body and a voltage-stabilized power supply, and is characterized by further comprising a drilling control circuit, a reset control mechanism and a load control mechanism; the middle part of the transverse plate is transversely provided with a sliding groove, the electric drill bodies are provided with a plurality of identical sets, the upper ends of the motor shells of the electric drill bodies are provided with sliding groove plates, the sliding groove plates of the electric drill bodies are respectively sleeved in the sliding groove of the transverse plate, and the upper ends of the sliding groove plates of the electric drill bodies are provided with fixing screws; the upper end of the electric telescopic rod is arranged at the lower end of the rack, and the lower part of the electric telescopic rod is arranged at the upper end of the transverse plate; the reset control mechanism comprises a trigger sub circuit and a limiting rod assembly, the limiting rod assembly comprises a sleeve, a movable rod and a microswitch, the sleeve is arranged at the lower end of one side of the transverse plate, the upper end of the movable rod is sleeved in the lower end of the sleeve, a fixed screw is arranged at the side end of the sleeve, and the microswitch is arranged at the lower end of the movable rod; the load control mechanism comprises a power generation coil, a magnet tube and a control sub-circuit, wherein the magnet tube is arranged on the outer side of the power output shaft of one set of the electric drill bodies, the power generation coil is arranged at the lower end of the shell of one set of the electric drill bodies, and the magnet tube is positioned in the middle of the power generation coil; the stabilized voltage power supply, the drilling control circuit, the trigger sub-circuit of the reset control mechanism and the control sub-circuit of the load control mechanism are arranged in the element box; the power supply output end of the voltage-stabilized power supply is electrically connected with the power supply input ends of the drilling control circuit, the reset control mechanism and the load control mechanism respectively; the power output ends of the drilling control circuit and the reset control mechanism are respectively and electrically connected with the positive and negative poles and the negative and positive poles of the electric telescopic rod; and the signal control ends of the reset control mechanism and the load control mechanism are respectively and electrically connected with the two paths of signal ports of the drilling control circuit.

Further, the electric telescopic rod is a reciprocating electric push rod; the stabilized voltage power supply is an AC-to-DC switching power supply module.

Further, the drilling control circuit comprises a power switch, a resistor, a silicon controlled rectifier and a relay, wherein the power switch, the resistor, the silicon controlled rectifier and the relay are electrically connected, one end of the power switch is connected with the anode of the silicon controlled rectifier and the anode control power input end of the relay, the other end of the power switch is connected with one end of the resistor, the other end of the resistor is connected with the control electrode of the silicon controlled rectifier, the cathode of the silicon controlled rectifier is connected with the anode control power input end of the relay, and the cathode of the relay and the cathode control power input end of the relay are connected.

Furthermore, the trigger sub-circuit of the reset control mechanism comprises a time control switch and a relay, the time control switch, the relay and a microswitch of the limit rod assembly are electrically connected, the microswitch is a normally open contact type microswitch, and the time control switch is a time controller module; one end of the microswitch is connected with an anode trigger signal input end of the time control switch, the other end of the microswitch is connected with an anode power input end of the time control switch and an anode control power input end of the second relay, a cathode power input end and a cathode trigger signal input end of the time control switch, a cathode power input end of the first relay, a cathode power input end of the second relay and an anode control power input end of the second relay are connected, and an anode power output end of the time control switch is connected with an anode power input end of the first relay and the anode power input end of the second relay.

Furthermore, the control sub-circuit of the load control mechanism comprises an adjustable resistor, an NPN triode, a relay, a rectifier bridge stack and a resistor, wherein the adjustable resistor, the NPN triode, the relay, the rectifier bridge stack, the resistor and a power generation coil are electrically connected, two ends of the power generation coil are respectively connected with two wire inlet ends of the rectifier bridge stack, the positive electrode of the power output end of the rectifier bridge stack is connected with one end of the adjustable resistor, the other end of the adjustable resistor is connected with the base electrode of the first NPN triode, the collector electrode of the first NPN triode is connected with one end of the resistor, the base electrode of the second NPN triode is connected with the base electrode of the second NPN triode, the collector electrode of the second NPN triode is connected with the negative electrode power input end of the relay, the negative electrode power output end of the rectifier bridge stack is connected with the emitter electrodes of the first NPN triode and the second NPN triode, and the positive electrode power input end of the relay is connected with the other end of the resistor.

The invention has the beneficial effects that: before the electric drill is used, a worker can enter a drilling process after adjusting the distance between a plurality of sets of electric drill bodies according to the drilling distance of the part. According to the intelligent electric drill, the drilling control circuit can automatically control the two sets of electric telescopic rods to drive the multiple sets of electric drill bodies to drill downwards, and after the microswitch at the lower end of the limiting rod assembly contacts the upper end of an object after the drill is in place, the reset control mechanism can automatically control the two sets of electric telescopic rods to drive the multiple sets of electric drill bodies to move upwards to the initial position, so that the intelligent control purpose is achieved. When the electric drill body drilling device works, under the action of the load control mechanism, when the hardness of a part drilled by the electric drill body is high and the drilling speed is relatively too high, a plurality of sets of electric drill bodies can be temporarily controlled to keep a certain height and not to move downwards, and the electric drill body is controlled to move downwards continuously after the drilling load is reduced, so that the electric drill body is effectively prevented from being damaged due to too high load. Based on the above, the invention has good application prospect.

Drawings

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

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

Fig. 2 is a partial structural schematic diagram of the present invention.

Fig. 3 is a circuit diagram of the present invention.

Detailed Description

As shown in fig. 1 and 2, an intelligent drilling machine comprises a frame 1, an electric telescopic rod 2, a transverse plate 3, an electric drill body 4, a voltage-stabilized power supply 5, a drilling control circuit 6, a reset control mechanism and a load control mechanism; the middle part of the transverse plate 3 is transversely provided with a rectangular sliding groove 31, the electric drill bodies 4 are provided with six identical sets, the upper end of a motor shell of each set of electric drill body is provided with an I-shaped sliding groove plate 41 through a screw nut, the sliding groove plates 41 of the six sets of electric drill bodies are respectively sleeved in the transverse plate sliding groove 31 (the electric drill bodies 4 can move left and right along the transverse plate 3 through the sliding groove plates 41 at the upper ends), the front and back parts of the upper ends of the sliding groove plates 41 of the six sets of electric drill bodies are respectively provided with a fixed screw hole, and a fixed screw 42 is vertically screwed into each fixed screw hole (the electric drill bodies are screwed after being transversely moved in place, so that the electric drill bodies do not move any more and enter a drilling process); the frame 1 is arranged in front of an upper end fixing plate of an operation point position, the electric telescopic rods 2 are provided with two sets, the cylinders of the two sets of electric telescopic rods 2 are vertically distributed and respectively arranged at the left part and the right part of the lower end of the frame 1, and the lower parts of the piston rods of the two sets of electric telescopic rods 2 are respectively arranged at the left part and the right part of the upper end of the transverse plate 3 through screw nuts; the reset control mechanism comprises a trigger sub-circuit 71 and a limiting rod assembly 72, the limiting rod assembly comprises a sleeve 721, a movable rod 722 and a microswitch 723, the sleeve 721 is vertically welded at the lower end of the right side of the transverse plate 3, the upper end of the movable rod 722 is sleeved in the lower end of the sleeve 721, the right lower end of the sleeve 721 is provided with an internal thread opening, a hand-operated screw 724 is screwed into the opening, and the microswitch 723 is adhered to the lower end of the movable rod 722 by glue; the load control mechanism comprises an annular generating coil 81 (the generating coil is wound on the outer side of an annular hollow plastic framework), an annular magnet tube 82 and a control sub-circuit 83, wherein the magnet tube 82 is bonded on the outer side of the upper end of a power output shaft of one set of electric drill body 4 by glue, the generating coil 81 is installed in the middle of the lower end of a shell of one set of electric drill body 4 through a screw nut, the magnet tube 82 is positioned in the middle of the shell of the generating coil 81, and the outer side of the magnet tube 82 and the shell of the generating coil 81 are spaced at a certain distance; the stabilized voltage power supply 5, the drilling control circuit 6, the trigger sub-circuit 71 of the reset control mechanism and the control sub-circuit 83 of the load control mechanism are arranged on a circuit board in the element box 9 (the element box 9 is arranged on the right side of the upper end of the machine frame).

As shown in fig. 1, 2 and 3, the electric telescopic rod M is a finished product of a reciprocating electric push rod with a dytp type and a working voltage of direct current of 24V, and the stroke of a piston rod of the electric telescopic rod M is 60M; the electric drill body 4 is an alternating current electric drill with 380V working voltage and 1.5KW power; the regulated power supply A1 is a finished product of a 220V/24V/1KW AC-to-DC 24V switching power supply module. The drilling control circuit comprises a power switch S (an operating handle is positioned outside an opening at the front end of the element box), a resistor R, a silicon controlled rectifier VS and a relay K1, wherein the power switch S, the resistor R, the silicon controlled rectifier VS and the relay K1 are connected through circuit board wiring, one end of the power switch S is connected with a positive electrode of the silicon controlled rectifier VS and an anode control power input end of the relay K1, the other end of the power switch S is connected with one end of the resistor R, the other end of the resistor R is connected with a control electrode of the silicon controlled rectifier VS, a negative electrode of the silicon controlled rectifier VS is connected with a positive power input end of the relay K1, and a negative electrode of the relay K1 is connected with a negative control power input end. The trigger sub-circuit of the reset control mechanism comprises a time control switch A2, relays K2 and K3, the time control switch A2, the relays K2 and K3 and a microswitch S1 of a limiting rod assembly are connected through a lead, the microswitch S1 is a normally open contact type finished product of the microswitch, a button of the microswitch faces to the lower end, the time control switch A2 is a time controller module finished product of a model YYC-2S, the working voltage of the time controller module finished product A2 is direct current 12V, the time controller module finished product is provided with a digital LED tube with four-digit time display, and is also provided with two power

supply input ends

1 and 2, two trigger

signal input ends

3 and 4, a set key 5 pin, an emergency stop key 6 pin, a time adding key 7 pin, a time reducing key 8 pin and a normally open power supply output end 9 pin, after the positive and negative pole power supply input ends of the time controller module finished product A2 are electrified, after an operator presses a setting key, a time adding key and a time subtracting key are respectively operated through digital display of a nixie tube, a positive power supply can be set to be output at an output end of a normally open power supply in a required time period, after the set time period passes, the output end of the normally open power supply stops outputting the power supply, the maximum setting time is 9999 minutes, after the time controller module finished product is set, as long as the next setting is not carried out, the setting data in the time controller module cannot change after the power is cut off, the time is set, and after the two trigger signal input ends are input with trigger power supply signals, the time relay module finished product carries out set time timing; one end of a microswitch S1 is connected with a pin 3 of a positive trigger signal input end of a time control switch A2, the other end of the microswitch S1 is connected with a pin 1 of a positive power input end of the time control switch A2, a pin 2 of a negative power input end of a second relay K2 and a pin 4 of a negative trigger signal input end of the time control switch A2, a negative power input end of a first relay K2, a negative power input end of the second relay K3 and a negative control power input end are connected, and a pin 3 of a positive power output end of the time control switch A2 is connected with a pin 3 of a positive power input end of the first relay K2 and a positive power input end of the second relay K3.

As shown in fig. 1, 2 and 3, the control sub-circuit of the load control mechanism includes an adjustable resistor RP, NPN transistors Q1 and Q2, a relay K4, a bridge rectifier A3, a resistor R1, an adjustable resistor RP, NPN transistors Q1 and Q2, a relay K4, a bridge rectifier A3, a resistor R1 and a generating coil M1 connected by wires, two ends of the generating coil M1 are connected with two

incoming terminals

1 and 2 of the bridge rectifier A3 by wires, a positive terminal 3 of a power output terminal of the bridge rectifier A3 is connected with one end of the adjustable resistor RP, the other end of the adjustable resistor RP is connected with a base of the first NPN transistor Q1, a collector of the first NPN transistor Q1 is connected with one end of the resistor R1, a base of the second NPN transistor Q2 is connected, a collector of the second NPN transistor Q2 is connected with a negative power input terminal of the relay K4, a negative power output terminal 674 of the bridge rectifier a negative electrode 3 is connected with the first NPN transistor Q1 and the second NPN transistor 2, the positive power supply input end of the relay K4 is connected with the other end of the resistor R1. The power input ends 1 and 2 of the voltage-stabilized power supply A1 and two poles of an alternating-current 220V power supply are respectively connected through leads. The power output end 3 and the pin 4 of the voltage-stabilized power supply A1, the other end of the power switch S at the two ends of the power input of the drilling control circuit, the negative power input end of the relay K1, the

pins

1 and 2 of the time control switch A2 at the two ends of the power input of the reset control mechanism, the positive power input end of the relay K4 at the two ends of the power input of the load control mechanism and the emitting electrode of the NPN triode Q1 are respectively connected through leads. Two normally open contact ends of a power output two-end relay K1 of the drilling control circuit, two normally open contact ends of a power output end relay K3 of the reset control mechanism and positive and negative poles and negative and positive poles power input ends of two sets of electric telescopic rods M are respectively connected through leads; the signal control end relay K2 of the reset control mechanism controls the power supply input end and the normally open contact end to be connected with the silicon controlled rectifier VS anode of the first path signal port of the drilling control circuit and one end of the power switch S through leads respectively. The signal control end relay K4 of the load control mechanism controls the power supply input end and the normally closed contact end and the positive control power supply input end of the second path of signal port relay K1 of the drilling control circuit and one end of the power switch S are respectively connected through leads.

As shown in fig. 1, 2 and 3, before the electric drill is used, a worker firstly adjusts the distance between six sets of electric drill bodies 4 according to the drilling distance of a part (the electric drill bodies 4 can be increased or decreased according to the requirement); during specific adjustment, the fixing screw rod 42 of the chute plate 41 is loosened, then the electric drill body 4 is moved transversely along the chute 31 of the transverse plate, and the fixing screw rod 42 is screwed after the electric drill body is moved to a proper position, so that the purpose of adjustment is achieved. Then, the worker adjusts the height of the movable rod 722 of the limiting rod assembly according to the drilling depth of the object; when the adjustment is carried out specifically, the manual screw 724 is loosened, and then the worker moves the movable rod 722 up and down along the sleeve 721 to a position to tighten the manual screw 724; when the height of the movable rod 722 is adjusted specifically, the worker adjusts the distance between the lower end of the drill bit of the electric drill body and the micro switch S1 at the lower end of the movable rod 722, and under the actual condition, the height difference between the lower part of the button of the micro switch S1 and the lower part of the drill bit is the drilling depth of the subsequent object (the object is fixed by a fixing clamp or a larger bench clamp and the like, and the upper surface of the object can be contacted by the micro switch at the lower end when the limiting rod assembly is subsequently lowered to a certain height).

As shown in fig. 1, 2 and 3, after the 220V ac power supply enters

pins

1 and 2 of regulated power supply a1, regulated power supply a1 outputs stable 24V power supply to the power input terminals of the drilling control circuit, the reset control mechanism and the load control mechanism under the action of its internal circuits, so that the above circuits and mechanisms are powered on and in working state. In the drilling control circuit, after the object is fixed and the distance between the limiting rod assembly and the object is adjusted (the power switches of the six sets of electric drill bodies 4 with the power input ends connected in parallel are turned on simultaneously, so that the six sets of electric drill bodies 4 are in an electrified working state), when drilling is needed, a worker does not do any operation any more by pressing a button of the power switch S (a touch normally open contact type microswitch) with hands, and then the drilling and upward resetting can be fully automatically completed. After the power switch S is pressed down, the anode of the 24V power supply can be subjected to voltage reduction and current limitation through the resistor R to trigger the conduction of the silicon controlled rectifier VS, so that the anode of the 24V power supply can enter the anode power supply input end of the relay K1 through the conducted silicon controlled rectifier VS, the control power supply input end of the relay K2 and the normally closed contact end, and then the relay K1 is electrified to attract the two control power supply input ends and the two normally open contact ends of the relay K1 to be closed respectively. Because the two normally open contact ends of the relay K1 are respectively connected with the positive and negative pole power input ends of the two sets of electric telescopic rods M, the two sets of electric telescopic rods M can be powered to work at the moment, piston rods of the two sets of electric telescopic rods M push the six sets of electric drill bodies 4 at the lower end of the transverse plate 3 to simultaneously and gradually move downwards (drilling parts move by about 3 millimeters per second), and when the six sets of electric drill bodies 4 move downwards, the six sets of electric drill bodies can gradually drill holes on objects at a certain interval. When the six sets of electric drill bodies 4 drill the object to a set depth, namely after a microswitch S1 button at the lower end of a limit rod assembly just contacts the upper end of the object, the internal contact of the microswitch S1 is closed, and then the positive electrode of a 24V power supply enters the 3 pins of a time control switch A2, after a high level signal is input into the 3 pins of the time control switch A2, under the action of the internal circuit and the 9 pin output power time set by a technician, the 9 pins can output a period of power (for example, 20 seconds) to enter the positive power input ends of the relays K2 and K3, so that the relay K2 is powered to attract the control power input end and the normally closed contact end of the relay, and the relay K3 is powered to attract the two control power input ends and the two normally open contact ends of the relay to. Because the control power supply input end and the normally closed contact end of the relay K2 are connected in series between the silicon controlled rectifier VS anode and one end of the power switch S, after the six sets of electric drill bodies 4 drill the object to the set depth, the silicon controlled rectifier VS anode loses voltage, further the relay K1 loses power and is not closed, and the two sets of electric telescopic rods M do not push the transverse plate 3 and the six sets of electric drill bodies 4 at the lower ends of the transverse plate to go downwards (even if the relay K2 loses power, the relay K1 still cannot be powered and attracted because the silicon controlled rectifier VS control electrode does not have a trigger power supply, and only after the next time the operator needs to drill the object and press the power switch S, the silicon controlled rectifier VS is triggered to turn on the relay K1 to be powered and attracted, so that the normal work of the electric drill is ensured. Because two normally open contact ends of the relay K3 are connected with the negative and positive power input ends of the two sets of electric telescopic rods M, after the depth of a drilled object of the electric drill body 4 is in place, the two sets of electric telescopic rods M can be electrically operated, piston rods of the two sets of electric telescopic rods M drive the transverse plate 3 and the electric drill body 4 at the lower end to ascend to the original position before drilling, and preparation is made for next drilling.

As shown in fig. 1, 2 and 3, in the load control mechanism, the power and the rotation speed of six sets of electric drill bodies 4 of the present invention are completely consistent, and in the six sets of electric drill bodies 4 drilling components, the power output shaft of one set of electric drill body 4 drives the magnet tube 82 to rotate, so that the magnet tube 82 cuts the power generation coil M1 to generate an alternating current power to enter the 1 and 2 feet of the rectifier bridge stack A3, the lower the load of the drilling component of the electric drill body 4, the higher the rotation speed of the power generation coil M1, the higher the load of the drilling component of the electric drill body 4, the lower the rotation speed, and the lower the power generation coil M1. After the electric energy generated by the power generation coil M1 of the drilling part of the electric drill body enters the

pins

1 and 2 of the rectifier bridge pile A3, the pin 3 of the rectifier bridge pile A3 outputs a direct current power supply to enter one end of the adjustable resistor RP. When the drilling load of all six sets of electric drill bodies 4 is not large, at the moment, the electric energy generated by the power generation coil M1 is rectified by the rectifier bridge A3, and enters the base electrode of the NPN triode Q1 after the adjustable resistor RP is subjected to voltage reduction and current limitation, the base electrode is higher than 0.7V, then the NPN triode Q1 is conducted, the collector electrode is output, the low level enters the base electrode of the NPN triode Q2, the base electrode of the NPN triode Q2 is not provided with proper forward bias and is in a cut-off state, then the NPN triode Q2 cannot be conducted, and the two sets of electric telescopic rods M keep a normal power-on working state to push the six sets of electric drill bodies 4 to normally drill objects downwards. In practical situations, when the load of the six sets of electric drill bodies 4 drilling objects is large, at the moment, the electric energy generated by the power generation coil M1 is rectified by the rectifier bridge stack A3, and the base voltage of the electric energy entering the NPN triode Q1 after being subjected to voltage reduction and current limitation by the adjustable resistor RP is lower than 0.7V, so that the NPN triode Q1 is in a cut-off state, the collector of the NPN triode Q1 stops outputting a low level to enter the base of the NPN triode Q2, further, the base of the NPN triode Q2 obtains a proper normal bias voltage from the 3 feet of the voltage-stabilized power supply a1 through the resistor R1 for voltage reduction and current limitation, the collector of the NPN triode Q2 outputs a low level to enter the negative power supply input end of the relay K4, and the relay K4 is powered to attract the control power supply input end and the normally closed contact end to be open. Because the control power supply input end of the relay K4 is communicated with the 3-pin of the stabilized voltage power supply A1, and the normally closed contact end of the relay K4 is connected with the positive control power supply input end of the relay K1, the positive control power supply input end of the electric appliance K1 loses power after the drilling part load of the six sets of electric drill bodies 4 is large, and then the two sets of electric telescopic rods M stop working temporarily, so that the six sets of electric drill bodies 4 do not descend to drill objects at the height and keep drilling at the current height. After a period of time, the load of the six sets of electric drill bodies 4 can be reduced after the six sets of electric drill bodies drill into an object at a certain depth, so that the electric energy voltage sent by the power generation coil M1 can be increased, the base voltage entering the NPN triode Q1 can be higher than 0.7V, the control power supply input end and the normally closed contact end of the relay K4 are powered off again, the positive control power supply input end of the relay K1 can be powered on again, and the two sets of electric telescopic rods M can be powered on to work to push the six sets of electric drill bodies to drill into the object continuously. Through the combined action of the circuit and the mechanism, the electric drill can automatically drill objects in application, the six sets of electric drill bodies are temporarily kept at the current drilling height to drill the objects when the load is large, the six sets of electric drill bodies 4 are controlled to drill the objects again when the load is reduced, and the six sets of electric drill bodies 4 are automatically reset upwards after drilling is finished and the initial state is restored to prepare for next drilling of the objects. The intelligent control system achieves the purpose of intelligent control, and effectively prevents the electric drill body from being damaged due to overlarge load.

As shown in fig. 1, 2 and 3, the resistance value of the adjustable resistor RP needs to be determined before production, specifically, when the six sets of electric drill bodies are just under heavy load when drilling objects (when the drilling speed of the electric drill body 4 is reduced due to heavy load and the sound becomes low and heavy), the resistance value of the adjustable resistor RP is adjusted, and when the relay K4 is just adjusted to be electrically sucked, the resistance value of the adjustable resistor RP is adjusted to the required resistance value; then, the power supply is disconnected to measure the resistance value of the adjustable resistor RP at the moment, and the measured resistance value is the resistance value required by the subsequent actual production of the adjustable resistor RP; the subsequent production can directly adjust the resistance value of the adjustable resistor RP in place or replace the adjustable resistor RP with a fixed resistor with the same resistance value without determining again. In the circuit, the resistance value of the adjustable resistor RP is 8M; model numbers of NPN triodes Q1 and Q2 are 9013; the resistance of the resistor R1 is 47K; the resistance value of the resistor R is 4.7K; the VS model of the controlled silicon is MCR 100-1; relays K1, K2, K3, K4 are DC24V relays; the model of the rectifier bridge stack A3 is KBP 310; the output power supply voltage when the generator coil M1 operates is 12V ac.

While there have been shown and described what are at present considered to be the essential features of the invention and advantages thereof, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Furthermore, it should be understood that although the present description refers to embodiments, the embodiments do not include only one independent technical solution, and such description is only for clarity, and those skilled in the art should take the description as a whole, and the technical solutions in the embodiments may be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An intelligent drilling machine comprises a frame, an electric telescopic rod, a transverse plate, an electric drill body and a voltage-stabilized power supply, and is characterized by further comprising a drilling control circuit, a reset control mechanism and a load control mechanism; the middle part of the transverse plate is transversely provided with a sliding groove, the electric drill bodies are provided with a plurality of identical sets, the upper ends of the motor shells of the electric drill bodies are provided with sliding groove plates, the sliding groove plates of the electric drill bodies are respectively sleeved in the sliding groove of the transverse plate, and the upper ends of the sliding groove plates of the electric drill bodies are provided with fixing screws; the upper end of the electric telescopic rod is arranged at the lower end of the rack, and the lower part of the electric telescopic rod is arranged at the upper end of the transverse plate; the reset control mechanism comprises a trigger sub circuit and a limiting rod assembly, the limiting rod assembly comprises a sleeve, a movable rod and a microswitch, the sleeve is arranged at the lower end of one side of the transverse plate, the upper end of the movable rod is sleeved in the lower end of the sleeve, a fixed screw is arranged at the side end of the sleeve, and the microswitch is arranged at the lower end of the movable rod; the load control mechanism comprises a power generation coil, a magnet tube and a control sub-circuit, wherein the magnet tube is arranged on the outer side of the power output shaft of one set of the electric drill bodies, the power generation coil is arranged at the lower end of the shell of one set of the electric drill bodies, and the magnet tube is positioned in the middle of the power generation coil; the stabilized voltage power supply, the drilling control circuit, the trigger sub-circuit of the reset control mechanism and the control sub-circuit of the load control mechanism are arranged in the element box; the power supply output end of the voltage-stabilized power supply is electrically connected with the power supply input ends of the drilling control circuit, the reset control mechanism and the load control mechanism respectively; the power output ends of the drilling control circuit and the reset control mechanism are respectively and electrically connected with the positive and negative poles and the negative and positive poles of the electric telescopic rod; and the signal control ends of the reset control mechanism and the load control mechanism are respectively and electrically connected with the two paths of signal ports of the drilling control circuit.

2. The intelligent drilling machine according to claim 1, wherein the electric telescopic rod is a reciprocating electric push rod; the stabilized voltage power supply is an AC-to-DC switching power supply module.

3. The intelligent drilling machine according to claim 1, wherein the drilling control circuit comprises a power switch, a resistor, a thyristor and a relay, the power switch, the resistor, the thyristor and the relay are electrically connected, one end of the power switch is connected with a positive electrode of the thyristor and a positive control power input end of the relay, the other end of the power switch is connected with one end of the resistor, the other end of the resistor is connected with a control electrode of the thyristor, a negative electrode of the thyristor is connected with a positive power input end of the relay, and a negative electrode of the relay is connected with a negative control power input end of the relay.

4. The intelligent drilling machine according to claim 1, wherein the trigger sub-circuit of the reset control mechanism comprises a time switch and a relay, the time switch, the relay and the micro switch of the limit rod assembly are electrically connected, the micro switch is a normally open contact type micro switch, and the time switch is a time controller module; one end of the microswitch is connected with an anode trigger signal input end of the time control switch, the other end of the microswitch is connected with an anode power input end of the time control switch and an anode control power input end of the second relay, a cathode power input end and a cathode trigger signal input end of the time control switch, a cathode power input end of the first relay, a cathode power input end of the second relay and an anode control power input end of the second relay are connected, and an anode power output end of the time control switch is connected with an anode power input end of the first relay and the anode power input end of the second relay.

5. The intelligent drilling machine according to claim 1, wherein the control sub-circuit of the load control mechanism comprises an adjustable resistor, an NPN triode, a relay, a bridge rectifier and a resistor, the adjustable resistor, the NPN triode, the relay, the rectifier bridge stack, the resistor and the generating coil are electrically connected, two ends of the generating coil are respectively connected with two wire inlet ends of the rectifier bridge stack, the anode of the power supply output end of the rectifier bridge stack is connected with one end of the adjustable resistor, the other end of the adjustable resistor is connected with the base electrode of the first NPN triode, the collector electrode of the first NPN triode is connected with one end of the resistor and the base electrode of the second NPN triode, the collector electrode of the second NPN triode is connected with the input end of the negative electrode power supply of the relay, the output end of the negative electrode power supply of the rectifier bridge stack is connected with the emitter electrodes of the first NPN triode and the second NPN triode, and the input end of the positive electrode power supply of the relay is connected with the other end of the resistor.