(8) Press the SB2 knob (wire switch) on the control panel, the storage drum rotates, and the molybdenum wire is automatically wound on the storage tube. After the requirement is reached, press the SB1 emergency stop knob on the control panel to install the electrode wire. On the storage tube (Figure 6);
(9) According to the method of Fig. 7, the electrode wire is wound onto the wire frame.
(6) Fixing and aligning the workpiece
(1) Correct the perpendicularity of the wire and the table before clamping the workpiece;
(2) Select a suitable fixture to fix the workpiece on the workbench;
(3) Use the dial gauge or other gauge to find the reference plane according to the workpiece drawing requirements, so that it is parallel to the X or Y direction of the workbench;
(4) The workpiece clamping position should be such that the workpiece cutting area is within the machine stroke range;
(5) Adjust the height of the machine frame, and ensure that the workpiece and fixture do not touch any part of the frame when cutting.
(7) Machine tool operation steps
(1) Close the power switch on the machine mainframe;
(2) Close the power switch on the machine control cabinet, start the computer, double-click the YH icon on the computer desktop to enter the wire cutting control system;
(3) Release the emergency stop button on the machine main machine;
(4) Filling the lubricating oil according to the lubrication requirements of the machine tool;
(5) Turn on the machine for no-load operation for two minutes and check whether its working status is normal;
(6) According to the requirements of the dimensions, precision and process of the machined parts, the line cutting machining program is programmed in the automatic cutting system of the online cutting machine and sent to the console. Or manually programmed the program and read into the control system via a floppy drive;
(7) Simulate the program on the console to confirm that the program is accurate;
(8) workpiece clamping;
(9) opening the wire barrel;
(10) turning on the coolant;
(11) Select reasonable electrical processing parameters;
(12) Manual or automatic tool setting;
(13) Click the “Machine†button on the console to start automatic machining;
(14) After processing, press “Ctrl+Q†to exit the control system and turn off the power of the control cabinet;
(15) Remove the workpiece and clean the machine;
(16) Turn off the machine main unit power.
(8) Safety procedures for machine tools
The operation characteristics of the root DK7725E wire-cutting machine are as follows:
(1) When the student first operates the machine tool, he must carefully read the wire cutting machine tool "training instructions" or machine tool operating instructions. And under the guidance of the training teacher.
(2) When moving the table manually or automatically, attention must be paid to the position of the molybdenum wire to avoid interference between the molybdenum wire and the workpiece or tooling.
(3) When using the automatic positioning function of the machine control system for automatic alignment, the high frequency must be turned off, otherwise it will burn.
(4) When closing the wire barrel, it must stop at two extreme positions (left or right).
(5) When clamping the workpiece, the working stroke of the machine must be considered, and the machining area must be within the range of the machine stroke.
(6) The height of the workpiece and the clamp of the workpiece must be lower than the height of the machine frame. Otherwise, the workpiece or fixture will hit the wire frame during the machining process and damage the machine.
(7) The tooling position supporting the workpiece must be outside the machining area of ​​the workpiece. Otherwise, it will be cut off together with the workpiece during machining.
(8) When the workpiece is finished, the high frequency must be turned off at any time.
(9) Frequently check the vulnerable and consumable parts (products) such as guide wheels, wire reels, bearings, molybdenum wire, cutting fluid, etc., and find damage and replace them in time.
Second, the operation of CNC slow wire EDM wire cutting machine
(1) Operational essentials of CNC slow wire cutting machine
The slow wire cutting machine is mainly used to machine high precision parts. There are many varieties of slow wire EDM wire cutting machines, and the operation of various machine tools is similar. Some basic operation contents and their requirements are similar to those of the fast wire EDM machine. However, the surface roughness, roundness error, linear error and dimensional error of the workpiece processed by the slow wire cutting machine are much better than those of the wire cutting machine, and the operation requirements are more focused on the machining accuracy and surface quality.
1. Process preparation
(1) Technical performance analysis of workpiece materials Different workpiece materials have different properties such as melting point, gasification point and thermal conductivity. Even if processed in the same way, the quality of the obtained workpieces is different. Therefore, the workpiece material must be selected according to the actual surface quality required. For example, in order to achieve high precision, it is necessary to select a cemented carbide material instead of stainless steel or unquenched high carbon steel, otherwise it is difficult to achieve the required requirements. This is because the internal residual stress of the cemented carbide material has less influence on the processing, and the processing precision and surface quality are better.
(2) Optional spark discharge of working fluid must be carried out in a liquid medium with certain insulating properties. The insulating property of the working fluid can compress the discharge channel after breakdown, thereby limiting the spark discharge in a small channel radius. The instantaneous and local high temperature melts and vaporizes the metal, and after the discharge is completed, the discharge gap is quickly restored to become an insulating state. The insulation performance is too low, and electrolysis will not occur to form a breakdown spark discharge; if the insulation performance is too high, the discharge gap is small, the chip discharge is difficult, and the cutting speed is lowered.
Previous page next page
include electric tools:pump Cutting Tools drilling tools grinders
Other Electric Tools,Circular Saw,Booster Cable,Air Hose Reel
SHANGQIU DING LIAN INTERNATIONAL TRADE CO. ,LTD , https://www.dingqitools.com