CN202081130U

CN202081130U - Novel electrospark surface hardening machine

Info

Publication number: CN202081130U
Application number: CN2011201582618U
Authority: CN
Inventors: 王洪斌; 王洪祥; 余兵涛
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-05-18
Filing date: 2011-05-18
Publication date: 2011-12-21
Anticipated expiration: 2021-05-18

Abstract

The utility model relates to a novel electrospark surface hardening machine. A power supply system comprises an isolation transformator, a full-wave rectifier circuit, a filter circuit, a storage capacitor circuit, and an electron switch which are sequentially connected with one another, wherein the isolation transformator is a multi-speed output transformator, the full-wave rectifier circuit is a rectifier bridge composed of four diodes, the filter circuit is an RLC (resistance-inductance-capacitance) filter circuit and is composed of capacitances, inductances and resistances, the storage capacitor circuit is formed by connecting a plurality of capacitors in parallel and connected with the switch for adjusting shunt capacitances through the make-and-break of the switch, and the electron switch is a contactless switch and is composed of a quick one-way silicon controlled rectifier and a solid state relay, and the quick one-way silicon controlled rectifier is triggered by a trigger-pulse generator; a deposition welding gun is composed of a motor, a rotating welding pin and a working chamber, wherein the tail part of the rotating welding pin is connected to the motor, and the head part of the rotating welding pin penetrates through the working chamber; and a gas protection system comprises an argon source device which controls gas supply to the working chamber of the depositing welding gun through an electromagnetic relay. The novel electrospark surface hardening machine has a smaller volume and is convenient to move.

Description

A kind of novel electric spark surface peening machine

Technical field

The utility model belongs to the metallic surface field of engineering technology, particularly a kind of novel electric spark surface peening machine.

Background technology

At present, spark surface peening is directly to utilize the electric energy with high-energy-density that workpiece surface is carried out intensive treatment, it will enter the metal works top layer as the conductive material of electrodes infiltration by the spark discharge effect, form the surface strengthen layer of alloying, thereby physics, chemistry and the mechanical property of workpiece are improved.Adopt the electric spark surface peening technology that workpiece surface is carried out intensive treatment, can prolong the work-ing life of equipment, reduce resource consumption, have very high energy-conserving and environment-protective meaning.Because the electric spark surface peening technological operation is simple, and have advantages such as less energy-consumption and tooling cost are low, obtained increasing application in the engineering field in recent years.Yet the equipment that now is used for electrospark impregnation all is manual low-power equipment mostly, and efficient is lower, strengthening layer is thin, lack of homogeneity, course of processing instability, is difficult to meet the requirements of processing quality and strengthening layer thickness.

Summary of the invention

The purpose of this utility model is to overcome the weak point that exists in the above-mentioned technology, provides a kind of simple in structure, reasonable in design, and power is big, and high efficiency can realize a kind of novel electric spark surface peening machine that the high quality workpiece surface is strengthened.

In order to achieve the above object; the technical solution adopted in the utility model is: comprise power-supply system; deposition welding gun and gas protection system; described power-supply system comprises isolating transformer; full-wave rectifier circuit; filtering circuit; reservoir capacitance circuit and electronic switch; each several part connects successively; isolating transformer is many grades of outputs; the rectifier bridge that full-wave rectifier circuit is made up of four diodes; filtering circuit is RLC filtering; constitute by capacitor and inductor and resistance; the reservoir capacitance circuit is formed in parallel by some electric capacity; and be connected with switch; adjust the shunt capacitance size by switch on and off; electronic switch is a noncontacting switch; constitute by quick one-way SCR and solid state relay; one-way SCR triggers by trigger generator fast; described deposition welding gun is by motor; rotation capillary and working chamber constitute; the Spin welding Aculeata is connected on the motor; head passes working chamber; described gas protection system mainly is made of the argon gas compressed air source unit, and the argon gas compressed air source unit is by the working chamber of electromagnetic relay control air feed to the deposition welding gun.

The utility model has the advantages that:

1, simple in structure, reasonable in design, volume is less;

2, conveniently moving is convenient to site operation, high efficiency;

3, workpiece surface strengthening layer thickness is even, and the strengthening layer quality is good, and effect is good in actual production.

Description of drawings

Fig. 1 is the utility model structural representation;

Fig. 2 is the utility model principle schematic;

Fig. 3 is the utility model trigger generator schematic circuit diagram.

Embodiment

Below in conjunction with accompanying drawing embodiment of the present utility model is described in further detail.

By Fig. 1-Fig. 3 as can be known; the utility model comprises power-supply system 1; deposition welding gun 7 and gas protection system 8; described power-supply system 1 comprises isolating transformer 2; full-wave rectifier circuit 3; filtering circuit 4; reservoir capacitance circuit 5 and electronic switch 6; each several part connects successively; isolating transformer 2 is many grades of outputs; the rectifier bridge that full-wave rectifier circuit 3 is made up of four diodes; filtering circuit 4 is RLC filtering; constitute by capacitor and inductor and resistance; reservoir capacitance circuit 5 is formed in parallel by some electric capacity; and be connected with switch; adjust the shunt capacitance size by switch on and off; electronic switch 6 is a noncontacting switch; constitute by quick one-way SCR 9 and solid state relay 10; one-way SCR 9 triggers by trigger generator 11 fast; described deposition welding gun 7 is by motor 12; rotation capillary 13 and working chamber 14 constitute; rotation capillary 13 afterbodys are connected on the motor 12; head passes working chamber 14; described gas protection system 8 mainly is made of the argon gas compressed air source unit, and the argon gas compressed air source unit is by the working chamber 14 of electromagnetic relay control air feed to deposition welding gun 7.

Frequency dividing circuit 16 and Darlington transistor 17 that the multivibrator 15 that the trigger generator 11 of described power-supply system is made of 555 chips, CD4040 chip constitute constitute, the output port of 555 chips is connected to the input port of CD4040 chip, and the output of the frequency dividing circuit 16 that the CD4040 chip constitutes is amplified by Darlington transistor 17.

Be provided with frequency pilot lamp 18 in described trigger generator 11 circuit.

The utility model is in power-supply system 1, isolating transformer 2 is step-down transformers that voltage dropped to two grades, isolate with ground, by changing the crest voltage that the voltage class can change electric capacity, so as to changing the strength of discharge of spark, the output of isolating transformer 2 is carried out full-wave rectification by bridge full wave rectifier circuit 3, rectification is after filtering circuit 4RLC filtering, become stable direct current and supply the reservoir capacitance of back reservoir capacitance circuit 5 to discharge and recharge usefulness, the filter capacitor capacity is big, adopts chemical capacitor.Can change the injected volume of reservoir capacitance by switch on and off in the reservoir capacitance circuit 5, to change strength of discharge.Discharging and recharging of reservoir capacitance controlled by electronic switch 6 break-makes, and electronic switch 6 is made of quick one-way SCR 9 and solid state relay 10, and one-way SCR 9 adopts trigger generator 11 to trigger fast.Trigger frequency generator 11, the multivibrator 15 that constitutes by 555 chips, formations such as frequency dividing circuit 16 that the CD4040 chip constitutes and Darlington transistor 17, multivibrator 15 its frequencies that 555 chips constitute can be regulated by the potentiometer that is connected 5 pin, the output of 3 pin is arranged, but its frequency is higher, be input to the CD4040 chip and carry out frequency division, draw at suitable part-frequency point, make its frequency adjustable continuously within the specific limits, the speed of frequency can show with the pilot lamp 18 of flicker, but this output rating is less, must amplify by the Darlington transistor 17 through there being three triodes to constitute, and could trigger quick one-way SCR 9 like this.When triggering signal, one-way SCR 9 conductings, reservoir capacitance discharge, in a single day one-way SCR 9 has the existence that triggers and afterflow is arranged fast, with continuous conducting, does not end, at this moment solid state relay 10 work, this solid state relay 10 has the zero voltage conducting, the characteristic that zero current ends, and reservoir capacitance is through quick one-way SCR 9, solid state relay 10 discharges, give out light very soon, when near zero current, solid state relay 10 ends, one-way SCR 9 is also less than keeping current cut-off fast, at this moment Fang Dian reservoir capacitance begins charging again, arrives up to next tripping pulse, begins discharge again, the number of times of discharge is decided by to trigger frequency, the frequency height, deposition is thin, evenly.

Deposition welding gun 7 is made of motor 12, rotation capillary 13 and working chamber 14, motor 12 energising back driven rotary capillary 13 rotations, and the argon gas compressed air source unit of gas protection system 8 is by the working chamber 14 of electromagnetic relay control air feed to deposition welding gun 7.When rotation capillary 13 contacts with workpiece to be machined; total system constitutes discharge loop; the reservoir capacitance of reservoir capacitance circuit 5 begins discharge; the argon gas compressed air source unit of gas protection system 8 is given working chamber 14 air feed automatically under electromagnetic relay control; produce spark discharge between rotation capillary 13 and the workpiece, the electrode materials infiltration is advanced workpiece surface.The quick one-way SCR 9 of electronic switch 6 ended after discharge was finished, by for some time in, the reservoir capacitance of reservoir capacitance circuit 5 is full of electricity again, when triggering frequency generator 11 next tripping pulses and arrive, begin the discharge generation spark again, like this carrying out of going round and beginning again.

Claims

1. novel electric spark surface peening machine; comprise power-supply system (1); deposition welding gun (7) and gas protection system (8); it is characterized in that: described power-supply system (1) comprises isolating transformer (2); full-wave rectifier circuit (3); filtering circuit (4); reservoir capacitance circuit (5) and electronic switch (6); each several part connects successively; isolating transformer (2) is many grades of outputs; the rectifier bridge that full-wave rectifier circuit (3) is made up of four diodes; filtering circuit (4) is RLC filtering; constitute by capacitor and inductor and resistance; reservoir capacitance circuit (5) is formed in parallel by some electric capacity; and be connected with switch; adjust the shunt capacitance size by switch on and off; electronic switch (6) is a noncontacting switch; constitute by quick one-way SCR (9) and solid state relay (10); one-way SCR (9) triggers by trigger generator (11) fast; described deposition welding gun (7) is by motor (12); rotation capillary (13) and working chamber (14) constitute; rotation capillary (13) afterbody is connected on the motor (12); head passes working chamber (14); described gas protection system (8) mainly is made of the argon gas compressed air source unit, and the argon gas compressed air source unit is by the working chamber (14) of electromagnetic relay control air feed to deposition welding gun (7).

2. a kind of novel electric spark surface peening machine according to claim 1, it is characterized in that: frequency dividing circuit (16) and Darlington transistor (17) that the multivibrator (15) that the trigger generator of described power-supply system (11) is made of 555 chips, CD4040 chip constitute constitute, the output port of 555 chips is connected to the input port of CD4040 chip, and the output of the frequency dividing circuit (16) that the CD4040 chip constitutes is amplified by Darlington transistor (17).

3. a kind of novel electric spark surface peening machine according to claim 1 and 2 is characterized in that: be provided with frequency pilot lamp (18) in described trigger generator (11) circuit.