CN202212614U

CN202212614U - Light magnetic drill

Info

Publication number: CN202212614U
Application number: CN2011202483554U
Authority: CN
Inventors: 陆春茂
Original assignee: YANGZHOU BOST TOOLS CO Ltd
Current assignee: YANGZHOU BOST TOOLS CO Ltd
Priority date: 2011-07-14
Filing date: 2011-07-14
Publication date: 2012-05-09
Anticipated expiration: 2021-07-14

Abstract

The utility model discloses a light magnetic drill, comprising an electromagnet (1) and a motor (2). A normally-on magnetic control switch (11) is disposed adjacent to a magnetic pole of the electromagnet. The magnetic control switch is parallely connected with a light emitting diode (12) and then is connected to a power source. The magnetic control switch of the light magnetic drill of the utility model is normally turned on. After the electromagnetic is powered on and a magnetic field is generated, the switch is turned off, and an indicating lamp is subjected to short circuit and then is off. Once the magnetic field is lost or is seriously weakened due to power failure or other faults of the electromagnet, the magnetic control switch is turned off, and the indicating lamp shines to indicate that the magnetic field is lost or the magnetic force is insufficient so as to remind an operator to pay attention. In this way, the stable working state of the light magnetic drill is effectively guaranteed, and manufactured products and the light magnetic drill are protected.

Description

Light-duty magnetic drill press

Technical field

The utility model relates to a kind of electric tool, relates in particular to a kind of light-duty magnetic drill press.

Background technology

Light-duty magnetic drill press is widely used in commercial production in the prior art, and it has electromagnet, and light-duty magnetic drill press is fixed on the machined object surface, is convenient to location and operation.Therefore electromagnet is as the function part of the location of light-duty magnetic drill press, and the stability influence of its work is to the stability of whole light-duty magnetic drill press.In actual use, electromagnet can be because dead electricity or other reasons cause its magnetic to disappear or instability, if the operator can not find in time that this problem will cause the damage of processing parts even the damage of light-duty magnetic drill press.

Summary of the invention

Goal of the invention: the purpose of the utility model is the deficiency to prior art, and a kind of light-duty magnetic drill press is provided, and in use when the disappearance of the not enough perhaps magnetic of electromagnet magnetic, can send photoelectricity caution operator and note.

Technical scheme: in order to realize the foregoing invention purpose, the technical scheme that the utility model adopted is:

A kind of light-duty magnetic drill press comprises electromagnet and motor, near the magnetic pole of described electromagnet, is provided with the magnetic switch of often opening, described magnetic switch be connected to power supply after light emitting diode is parallelly connected.

Described motor is provided with reversing switch.

In described motor, be provided with normally closed temperature detect switch (TDS), this temperature detect switch (TDS) is connected with the control circuit of motor.

Beneficial effect: the utility model compared with prior art, its beneficial effect is:

1, the magnetic switch normality is for often opening, after the electromagnet energising produces magnetic field, and switch closure; With the indicator lamp short circuit, indicator lamp extinguishes, in case electromagnet is because dead electricity or when causing loss of excitation or magnetic field to seriously undermine because of other faults; Magnetic switch breaks off, and indicator lamp gets electroluminescence, and indication magnetic field loss of excitation or magnetic force are not enough; Remind the operator to note, effectively guaranteed the stable of light-duty magnetic drill press duty, protected processed product and light-duty magnetic drill press;

2, described motor is provided with reversing switch, and reversing switch is in diverse location, and then the wiring direction of the coil of motor and carbon brush changes, and has changed motor steering from face, can adjust turning to of motor according to action need, and is easy to operate;

3, in described motor, be provided with normally closed temperature detect switch (TDS), temperature detect switch (TDS) is a normally off, does not influence the work of Electric Machine Control system circuit; When motor temperature too high; The threshold values that has surpassed temperature detect switch (TDS), temperature detect switch (TDS) work, the control circuit of cut-out motor; Motor quits work, thereby the protection motor does not burn because of overheated.

Description of drawings

Fig. 1 is the utility model structural representation;

Fig. 2 is the circuit theory diagrams of the utility model.

The specific embodiment

Below in conjunction with accompanying drawing, through a most preferred embodiment, the utility model technical scheme is elaborated, but the protection domain of the utility model is not limited to said embodiment.

As depicted in figs. 1 and 2; A kind of light-duty magnetic drill press comprises electromagnet 1 and motor 2, near the magnetic pole of described electromagnet, is provided with the magnetic switch of often opening 11; Be connected to power supply after described magnetic switch and light emitting diode 12 are parallelly connected; Described motor is provided with reversing switch 13, in described motor, is provided with normally closed temperature detect switch (TDS) 14, and this temperature detect switch (TDS) is connected with the control circuit of motor.

Speed-regulating function: speed-regulating potentiometer 15 control motor speeds, phase place and controllable silicon 16 turn-on angle that adjusting speed-regulating potentiometer 15 has promptly changed controllable silicon 16 triggerings change, and have changed motor speed.

The power adjusting function: Power Regulation potentiometer 17 is installed in the SCR control circuit, and position influence controllable silicon 16 turn-on angle of Power Regulation potentiometer 17 are regulated power of motor from face.

Limit merit function: be provided with sample resistance 18 and selector switch 19 at the SCR control circuit; Sample resistance 18 work when selecting switch 19 to break off, thus mend merit according to load state, and when selecting switch 19 closures; Sample resistance is by short circuit; The turn-on angle size of controllable silicon 16 can only be selected according to preliminary election, can not adjust voluntarily, thereby power is restricted.

Claims

1. a light-duty magnetic drill press comprises electromagnet (1) and motor (2), it is characterized in that: near the magnetic pole of described electromagnet, be provided with the magnetic switch of often opening (11), described magnetic switch be connected to power supply after light emitting diode (12) is parallelly connected.

2. light-duty magnetic drill press according to claim 1 is characterized in that: described motor is provided with reversing switch (13).

3. light-duty magnetic drill press according to claim 1 is characterized in that: in described motor, be provided with normally closed temperature detect switch (TDS) (14), this temperature detect switch (TDS) is connected with the control circuit of motor.