阅读说明：本技术 一种线切割设备高低压复合脉冲控制系统 (High-low voltage composite pulse control system of linear cutting equipment ) 是由 王松虎 王松海 于 2018-07-25 设计创作，主要内容包括：本发明公开了一种线切割设备高低压复合脉冲控制系统,包括一数控线切割设备的控制端,以及放电端和一高压控制模块,还包括一中压控制模块,控制端包括一单片机控制端,单片机控制端和一控制电柜电性连接,还包括一和单片机控制端形成控制式电性连接的电路检测控制端,电路检测控制端可检测放电端的放电高低状态,并且可对放电端进行高压或中压放电控制；本发明接着公开了一种线切割设备高低压复合脉冲控制方法；采用该线切割设备高低压复合脉冲控制系统及控制方法,可有效减少断丝率,提高加工效率,改善加工效果,并且达到节能减排的目的。(The invention discloses a high-low voltage composite pulse control system of a linear cutting device, which comprises a control end of a numerical control linear cutting device, a discharge end, a high-voltage control module and a medium-voltage control module, wherein the control end comprises a single chip microcomputer control end which is electrically connected with a control electric cabinet; the invention then discloses a high-low voltage composite pulse control method of the linear cutting equipment; by adopting the high-low voltage composite pulse control system and the control method of the wire cutting equipment, the wire breakage rate can be effectively reduced, the processing efficiency is improved, the processing effect is improved, and the purposes of energy conservation and emission reduction are achieved.)

1. The high-low voltage composite pulse control system comprises a control end of a numerical control wire cutting device, a discharge end used for carrying out wire cutting discharge machining on the machining end, a high-voltage control module capable of conveying high voltage electricity to the discharge end, and a medium-voltage control module, wherein the medium-voltage control module is electrically connected with the discharge end, the control end comprises a single-chip microcomputer control end, and the single-chip microcomputer control end is electrically connected with a control electric cabinet.

2. The high-low voltage composite pulse control system of the wire cutting equipment as claimed in claim 1, wherein the detection control circuit end comprises: the circuit detection module, the voltage detection module, the first information feedback module and the second information feedback module;

the circuit detection module: the circuit detection module is positioned between the control end of the single chip microcomputer and the discharge end, is electrically connected with the discharge end and the high-voltage control module in a control type through a first power line and is used for detecting whether the high voltage reaches a breakdown point;

the voltage detection module: the first voltage detection module is positioned between the control end of the single chip microcomputer and the high-voltage control module and is connected with the control end of the single chip microcomputer and the high-voltage control module through a second power line; transmitting a signal whether the high voltage reaches a breakdown point to a control end of the single chip microcomputer;

the first information feedback module: the information feedback module is positioned between the control end of the single chip microcomputer and the high-voltage control module and is connected with the control end of the single chip microcomputer and the high-voltage control module through a third power line; transmitting a signal for closing or continuously opening the high-voltage control module to the high-voltage control module;

the second voltage detection module: the second information feedback module is positioned between the control end of the single chip microcomputer and the medium voltage control module and is connected with the control end of the single chip microcomputer and the medium voltage control module through a fourth power line; and transmitting a signal for opening the medium-voltage control module to the medium-voltage control module.

3. The high-low voltage composite pulse control method of the wire cutting equipment according to claim 1, characterized by comprising the following steps:

(1) the single chip microcomputer control circuit controls the discharge end to emit high voltage, so that breakdown is accelerated;

(2) detecting whether the high voltage reaches breakdown or not through a detection circuit connected with the singlechip control circuit, if the high voltage reaches breakdown, closing the high voltage, and controlling through the singlechip control circuit to release a continuous medium voltage to maintain discharge to a discharge end;

(3) and if the high voltage is not broken down, maintaining the high voltage discharge until the high voltage is broken down, and then returning to the step (2).

Technical Field

The invention relates to linear cutting equipment, in particular to a high-low voltage composite pulse control system and a control method of the linear cutting equipment, and belongs to the technical field of voltage control of the linear cutting equipment.

Background

Wire cut electrical discharge machining is called wire cutting for short. It is developed on the basis of electric spark perforation and forming processing. It not only develops the application of electric spark machining, but also replaces electric spark punching and forming machining in some aspects. Wire-cut electrical discharge machines have been the majority of electrical discharge machines. The working principle is as follows: the electrode wire wound on the wire conveying cylinder moves at a certain speed along the rotation direction of the wire conveying cylinder, and a workpiece arranged on a worktable of a machine tool relatively moves with the electrode wire in a shaping mode according to a preset control track. One pole of the pulse power supply is connected with the workpiece, and the other pole is connected with the electrode wire. A certain discharge gap is always kept between the workpiece and the electrode wire, and working liquid is sprayed, so that a certain gap is corroded by spark discharge between the electrodes, and the workpiece with the required shape and size is cut by continuous pulse discharge.

The discharge of the electrode wire mainly depends on the discharge end of the linear cutting equipment, and the discharge can be realized only by outputting certain voltage. The stable output of the voltage is a key for the purpose of stable discharge. However, in actual operation, it is found that the voltage output often tends to an unstable state, either the voltage is too high or too low, and if the voltage is too low, the effect of breakdown cannot be achieved, and cutting cannot be performed normally, so that the cutting effect and quality are seriously affected; if the voltage is too high, the wire breaking rate is increased, the loss of the molybdenum wire is accelerated, the power consumption is increased, and the purpose of energy conservation cannot be achieved.

Disclosure of Invention

The invention aims at the problems and provides a high-low voltage composite pulse control system and a control method of linear cutting equipment.

In order to achieve the technical purpose, the invention adopts a high-low voltage composite pulse control system of a linear cutting device, which comprises a control end of a numerical control linear cutting device, a discharge end used for carrying out linear cutting discharge machining on the machining end, a high-voltage control module capable of conveying high voltage to the discharge end, a medium-voltage control module and a circuit detection control end, wherein the high-voltage control module is electrically connected with the discharge end, the medium-voltage control module is electrically connected with the discharge end, the control end comprises a singlechip control end, the singlechip control end is electrically connected with a control electric cabinet, the circuit detection control end is electrically connected with the singlechip control end in a control mode, and the circuit detection control end can detect the discharge high-low state of the discharge end and can carry out high-voltage or medium-voltage discharge control on the discharge end.

Preferably, the detection control circuit includes: the circuit detection module, the voltage detection module, the first information feedback module and the second information feedback module;

the circuit detection module: the circuit detection module is positioned between the control end of the single chip microcomputer and the discharge end, is electrically connected with the discharge end and the high-voltage control module in a control type through a first power line and is used for detecting whether the high voltage reaches a breakdown point;

the voltage detection module: the first voltage detection module is positioned between the control end of the single chip microcomputer and the high-voltage control module and is connected with the control end of the single chip microcomputer and the high-voltage control module through a second power line; transmitting a signal whether the high voltage reaches a breakdown point to a control end of the single chip microcomputer;

the first information feedback module: the information feedback module is positioned between the control end of the single chip microcomputer and the high-voltage control module and is connected with the control end of the single chip microcomputer and the high-voltage control module through a third power line; transmitting a signal for closing or continuously opening the high-voltage control module to the high-voltage control module;

the second voltage detection module: the second information feedback module is positioned between the control end of the single chip microcomputer and the medium voltage control module and is connected with the control end of the single chip microcomputer and the medium voltage control module through a fourth power line; and transmitting a signal for opening the medium-voltage control module to the medium-voltage control module.

On the basis, the invention further discloses a high-low voltage composite pulse control method of the linear cutting equipment, which comprises the following steps:

(1) the single chip microcomputer control circuit controls the discharge end to emit high voltage, so that breakdown is accelerated;

(2) detecting whether the high voltage reaches breakdown or not through a detection circuit connected with the singlechip control circuit, if the high voltage reaches breakdown, closing the high voltage, and controlling through the singlechip control circuit to release a continuous medium voltage to maintain discharge to a discharge end;

(3) and if the high voltage is not broken down, maintaining the high voltage discharge until the high voltage is broken down, and then returning to the step (2).

The invention mainly adopts a plurality of circuit detection modules to carry out real-time detection and feedback on the medium-high voltage control end of the discharge end, thereby achieving the purposes of carrying out high-voltage discharge to a breakdown point in a short time and then continuing the medium-voltage discharge to maintain breakdown.

Drawings

FIG. 1 is a block diagram of the system architecture of the present invention;

wherein, 1, a discharge end; 2. a high voltage control module; 3. a medium voltage control module; 4. a control end of the single chip microcomputer; 5. controlling the electric cabinet; 6. a circuit detection module; 7. a voltage detection module; 8. a first information feedback module; 9. a second information feedback module; 10. a first power line; 11. a second power supply line; 12. a third power supply line; 13. and a fourth power line.

Detailed Description

The invention is further described with reference to the following figures and detailed description.

As shown in fig. 1, a high-low voltage composite pulse control system for a wire cutting device includes a control end of a numerical control wire cutting device, a discharge end 1 for performing wire cutting discharge machining on a machining end, and a high voltage control module 2 capable of delivering high voltage to the discharge end 1, where the high voltage control module 2 and the discharge end 1 are electrically connected.

The invention also comprises a medium voltage control module 3, and the medium voltage control module 3 is electrically connected with the discharge end 1.

The control terminal of the invention comprises a single chip microcomputer control terminal 4, and the single chip microcomputer control terminal 4 is electrically connected with a control electric cabinet 5.

The invention also comprises a circuit detection control end which is electrically connected with the singlechip control end 4 in a control mode, can detect the discharge high-low state of the discharge end 1 and can control the discharge end 1 to discharge at high voltage or medium voltage.

In the present invention, a preferred detection control circuit terminal includes: the circuit detection module 6, the voltage detection module 7, the first information feedback module 8 and the second information feedback module 9;

the circuit detection module 6 is located between the singlechip control terminal 4 and the discharge terminal 1, and forms a control type electric connection with the discharge terminal 1 and the high-voltage control module 2 through a first power line 10, and the circuit detection module 6 mainly functions as follows: detecting whether the high voltage reaches a breakdown point;

the voltage detection module 7 is positioned between the singlechip control end 4 and the high-voltage control module 2 and is connected with the singlechip control end 4 and the high-voltage control module 2 through a second power line 11; the main functions are as follows: transmitting a signal whether the high voltage reaches a breakdown point to the singlechip control end 4;

the first information feedback module 8 is positioned between the singlechip control end 4 and the high-voltage control module 2 and is connected with the singlechip control end 4 and the high-voltage control module 2 through a third power line 12; the main functions are as follows: transmitting a signal for closing or continuously opening the high-voltage control module 2 to the high-voltage control module 2;

the second voltage detection module 9 is arranged between the singlechip control end 4 and the medium voltage control module 3 and is connected with the singlechip control end 4 and the medium voltage control module 3 through a fourth power line 13; a signal to turn on the medium voltage control module 3 is transmitted to the medium voltage control module 3.

On the basis, the invention further discloses a high-low voltage composite pulse control method of the linear cutting equipment, which comprises the following steps:

(1) a high voltage is discharged to the discharge end 1 through the control of a singlechip control circuit, so that the breakdown is accelerated;

(2) detecting whether the high voltage reaches breakdown or not through a detection circuit connected with the singlechip control circuit, if the high voltage reaches breakdown, closing the high voltage, and controlling through the singlechip control circuit to release a continuous medium voltage to maintain discharge to a discharge end;

(3) and if the high voltage is not broken down, maintaining the high voltage discharge until the high voltage is broken down, and then returning to the step (2).

In combination with the above system structure and method, we can see that the circuit detection module 6 is used to detect whether the high voltage reaches the breakdown point; the voltage detection module 7 transmits a signal indicating whether the high voltage reaches a breakdown point to the singlechip control end 4; transmitting a signal for closing or continuously opening the high-voltage control module 2 to the high-voltage control module 2 through the first information feedback module 8; and a signal to turn on the medium voltage control module 3 is transmitted to the medium voltage control module 3 through the second voltage detection module 9. Thus, the high voltage breakdown and the medium voltage continuous state are achieved.

In general, the invention mainly adopts a plurality of circuit detection modules to carry out real-time detection and feedback on the medium-high voltage control end of the discharge end, so as to achieve the purposes of carrying out high-voltage discharge in a short time to reach a breakdown point and then continuing the medium-voltage discharge to maintain breakdown.

The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.