CL2-400

Correctly control the voltage and current of wire cutting

Correctly control the voltage and current of wire cutting     How to correctly control the voltage and current of the wire cutting machine?Let's introduce it to you. 　　1.The voltage of the fast-moving wire and medium-moving wire cutting machine should be controlled between 70-90V during processing.　　 　　2.The processing current depends on the thickness of the workpiece to be processed to determine. Generally, if the thickness of the workpiece to be cut is below 70, the current can be controlled at 2-3A.　　 　　3.As for the current jumping to 4-5A all at once, it may be that your walking speed is too fast and the short circuit is caused.　　 　　EDM wire cutting is more troublesome, and it is necessary to adjust the pulse interval, pulse width, pulse... the value of the change is too large.　　 　　For the same type of wire cutting, the practices of manufacturers are different and the performance is different.The cutting efficiency is also different.　　 　　The no-load voltage is the voltage that turns on the high frequency but does not process the workpiece.As the thickness of the workpiece changes during processing, the no-load voltage will also change. During processing, the voltage will be lower than the no-load voltage, which is the so-called load.The thickness is different, and the load is different.　　 　　There is a voltage regulator inside the control box of the EDM wire cutting machine and an external rotary switch. The voltage can be adjusted by rotating the switch back and forth (it is strictly forbidden to adjust the voltage and change the pulse width, pulse spacing, and pulse parameters during cutting.There will be a risk of broken wires and destruction of circuit components).

How to deal with the “filigree” phenomenon of medium wire cutting machine tools

How to deal with the “filigree” phenomenon of medium wire cutting machine tools 　　     How to deal with the phenomenon of “filigree” encountered in the daily use of medium-distance wire cutting machine tools?The following Xiaobian will give you a brief introduction.         The cause of the phenomenon of “filigree” in medium-distance wire cutting machine tools：　　 　　Because it cannot be effectively deionized to form a continuous arc discharge, the resistance heat of the arc of the wire cutting machine tool precipitates a small amount of carbon to form fine carbon particles, and the molybdenum wire itself is also carbonized.One of the three is that the workpiece is thicker (long discharge gap), the dielectric coefficient of water is low (poor recovery insulation), and the pulse source has a DC weight (greater than 10mA) that delays arc extinguishing. These three are the basic conditions for the “filigree” scene.An “impurity” brought in (or inherent in the workpiece) in the discharge gap that affects the spark discharge is the cause of the “filigree” phenomenon.“Filigree” is the same as the arc-drawing burn of spark electric discharge machining. Once the arc-drawing burn in the gap is formed, the workpiece and the electrode will be burned out of the pit at the same time and form carbon fine particles. If the carbon fine particles are not cleaned, they cannot be processed.When the small carbon particles stick there, they will be burned by arcs, and the area will become larger and larger, and there will be no ability to remove them by themselves.If the workpiece and the electrode are displaced, each and the opposite side will cause new arc burns, one place will change to two places.The only way is for people to liquidate, and the line cutting can be done as a force.　　 　　Analysis and treatment of the ”filigree" scene of medium-moving wire cutting machine tools　　 　　After a period of cutting, dark spots will appear on the molybdenum wire for a period of time. The dark spots are usually a few to ten millimeters long, and the dark spots are usually a few to tens of centimeters apart.Dark spots are arc discharges that continue over a period of time, burn and carbonize.After thinning, brittleness and carbonization, it is easy to break.Dark spots form black spots on the silk tube, and sometimes they are arranged in a certain order to form patterns, so they are called "filigree”.

A brief discussion on the maintenance and maintenance of machinery and equipment for cutting slow wire walking

A brief discussion on the maintenance and maintenance of machinery and equipment for cutting slow wire walking         How to maintain and maintain the machinery and equipment for cutting slow wire walking in daily use?The following Xiaobian will give you a brief introduction. 　　The slow wire cutting machine is a new type of machinery that gathers many high-tech technologies. It is classified as a category of machinery and equipment with high precision and density. The user must pass strict training before working so that he can enter the actual work.In order to ensure the safety of users, Ningbo slow wire manufacturer will briefly describe the main points that operators need to pay attention to for you. 　　It should be clear about the characteristics, functions, structure, etc. of the slow wire cutting machine, be familiar with the control process and follow the safety code of work; it should be processed within the range of models that can be cut off of the machine tool, and should not exceed the weight or exceed the stroke; it should be checked regularly whether the rotary button switch and the direction switch of the machine tool are intact and trustworthy, and can still be in operation in case of problems; the appropriate amount of lubricating oil or grease should be added to the lubrication place on time in accordance with the rules to ensure that the machine parts can operate normally, especially the guide wheels and bearings, which must be inspected, repaired and replaced on time. 　　Finally, I would like to remind everyone that in order to ensure the service life of the machine and the safety and reliability of the work, regular maintenance and maintenance must be carried out.

Processing flow of unilateral loose wire of wire cutting machine tool

Processing flow of unilateral loose wire of wire cutting machine tool 　　Often wire cutting machines find that the wire is loose and tight on one side, and many methods have been used to deal with it, but they have not been completely solved. The following is the process of processing a single-sided loose wire machine tool, which can be provided for your reference. Processing flow： 1. Use the method of cutting and processing to reproduce the fault phenomenon first, and record the various parameters of the processing, cutting time and other indicators in detail.After the failure phenomenon reappears, let the relevant personnel confirm that the phenomenon is the same. 2. When processing, it is step by step and verified in sequence. Each step is processed in accordance with the process of analysis-plan-filing-verification-recording. 3. Analyze the cause of the failure, formulate a solution and treatment method, and report it to the technical supervisor for the record. 4. Start to implement the processing method, verify the results after processing, and record them in detail. 5. If the problem is not solved, repeat the process again in accordance with this process.    The above is the processing process of single-sided loose wire of the wire cutting machine for your reference.

Teach you to correctly control the voltage and current of the wire cutting machine

Teach you to correctly control the voltage and current of the wire cutting machine   How to correctly control the voltage and current of the wire cutting machine in daily use? 　　1.The voltage of the fast-moving wire and medium-moving wire cutting machine should be controlled between 70-90V during processing.　　 　　2.The processing current depends on the thickness of the workpiece to be processed to determine. Generally, if the thickness of the workpiece to be cut is below 70, the current can be controlled at 2-3A.　　 　　3.As for the current jumping to 4-5A all at once, it may be that your walking speed is too fast and the short circuit is caused.　　 　　EDM wire cutting is more troublesome, and it is necessary to adjust the pulse interval, pulse width, pulse... the value of the change is too large.　　 　　For the same type of wire cutting machine, the practices of manufacturers are different and the performance is different.The cutting efficiency is also different.　　 　　The no-load voltage is the voltage that turns on the high frequency but does not process the workpiece.As the thickness of the workpiece changes during processing, the no-load voltage will also change. During processing, the voltage will be lower than the no-load voltage, which is the so-called load.The thickness is different, and the load is different.　　 　　There is a voltage regulator inside the EDM wire cutting control box and an external rotary switch. The voltage can be adjusted by rotating the switch back and forth (it is strictly forbidden to adjust the voltage and change the pulse width, pulse spacing, and pulse parameters during cutting.There will be a risk of broken wires and destruction of circuit components).     The above is the correct way to control the voltage and current of the wire cutting machine. I hope it will be of help to everyone.

The concept and principle of medium wire cutting machine

Medium wire walking belongs to the category of reciprocating high-speed wire walking EDM wire cutting machine tools. It realizes multiple cutting functions on high-speed reciprocating wire walking EDM wire cutting machines, which are commonly known as “medium wire cutting”.Medium wire walking technology points out here that the so-called “medium wire walking” does not mean that the wire walking speed is between high speed and low speed, but a composite wire walking machine tool, that is, the principle of wire walking is to use high-speed (8-12m/s) wire walking during roughing, and low-speed (1-3m/s) wire walking during finishing, so that the work is relatively stable, the jitter is small, and the material deformation and molybdenum wire loss are reduced through multiple cuts. The error caused by the loss of molybdenum wire, the processing quality is also relatively improved, and the processing quality can be between the high-speed wire walking machine and the low-speed wire walking machine.Therefore, it can be said that what the user refers to as “medium wire walking” is actually a reciprocating wire walking EDM wire cutting machine that draws on the processing technology of some low-speed wire walking machines, and realizes stripe-free cutting and multiple cutting.The medium wire-walking technology has been derived from practice. In multiple cuts, the first cutting task is mainly high-speed and stable cutting. High-peak current and longer pulse width standards can be selected for high-current cutting to obtain a higher cutting speed.The task of the second cutting is to refine and ensure the dimensional accuracy of the processing.Medium specifications can be selected so that the roughness Ra after the second cutting is between 1.4 and 1.7µm. In order to achieve the purpose of finishing, the low-speed wire walking method is usually used. The wire walking speed is 1 to 3m/s, and the tracking feed speed is limited to a certain range to eliminate round-trip cutting stripes and obtain the required machining dimensional accuracy.      The task of the third, fourth or more cuts (currently, the wire-walking control software can achieve up to seven cuts) is polishing and polishing, and the minimum pulse width (currently the minimum can be divided into 1µs) can be used for polishing, and the peak current varies with the processing surface quality requirements. In fact, the finishing process is a kind of electric spark grinding, the processing volume is very small, and the size of the workpiece will not be changed.The wire-walking method is like the second cutting, and the low-speed wire-walking speed limit can be used to feed.In the processing process of medium-wire technology, multiple cuts also need to pay attention to deformation treatment, because when the workpiece is cut online, with the action of the original internal stress and the influence of the processing thermal stress generated by the spark discharge, it will produce undirected and irregular deformation, which will make the subsequent cutting uneven in thickness and thickness, which affects the processing quality and machining accuracy.Therefore, different processing margins need to be reserved according to different materials, so that the workpiece can fully release the internal stress and completely torsional deformation, and there can be sufficient margin for fine cutting in multiple subsequent cuts, so that the final size of the workpiece can be guaranteed.