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EDM Precautions


Processing quality will have a greater impact and, therefore, to be processing in the usual attention. 3 Process technology in mechanical design industry as much as the status of the position, also in the mold industry. The quality of craft products directly determines the quality. Now the single-axis EDM CNC machines or multi-axis CNC is to change the traditional process. Change process can be controlled and the number of. Another example is repeated in the Fast Wire EDM cutting technology is also changing its process and improve product quality, so that in the process of mold design or manufacturing process conditions to be reasonable under the existing arrangements for technology. In addition, the design of the electrode process, not only to consider the shape and size of the cavity,[link widoczny dla zalogowanych], and requires the use of a variety of measures, such as compensation electrodes translational ball moving, multi-electrode processing and other technological measures in order to obtain the required size accuracy and surface quality. Different process conditions, the choice of electrode material is also somewhat different, the following are commonly used graphite and copper electrode material the use of performance characteristics (Table 1). 4 electrical parameters as the EDM machine tools, power status, of course is of paramount importance. Although users in the use of these machines when electricity is not subject to control the quality of the original, but how to choose the appropriate electrical parameters is worthy of attention. Electrical parameters and processing of materials, processing area, the working fluid quality, precision machined surface roughness requirements, process and others have a direct relationship, which requires the operator in the actual process of continuous accumulation of experience, and explore some rule. 5 cleaning tools for cleaning the EDM machine has a special significance, because the EDM using a high frequency, high voltage and high current pulse current as a processing tool, the same machine insulation quality and accuracy of processing has a great influence . 38 \No. 7 Total 28 three-dimensional measuring instrument in the extrusion die of China plus at Aluminum Company Limited (Shenzhen, Guangdong 518052,[link widoczny dla zalogowanych], China) Abstract Lau Andy introduces Canada at the Shenzhen China Aluminum Industry Co., Ltd. from Japan in the crowded three-dimensional measuring system the application of pressure die. Keywords three-dimensional measuring instrument working with three-dimensional extrusion die 1 Introduction meter can be x,[link widoczny dla zalogowanych], Y,[link widoczny dla zalogowanych], Z axis coordinates of any point or continuous space coordinates of points determined the precision can reach 1m, coupled with its powerful software control system, has been used in many industries in the domestic product final inspection of the measuring instruments. But it is the application of the extrusion die at home or first. Is well known that the most critical parts of extrusion die is working with the die hole. Which work with the angle, length and surface roughness affect the profile shape and surface quality of the key factors. Extrusion plants in the country, are currently relying on the help of artificial grinding and angle gauge and micrometer to work with tools such as angle, length, and surface finishing and testing, its accuracy is often difficult to guarantee; and in foreign countries, many compression Works have started to borrow more accurate three-dimensional measuring system to the rear rear by the rear by the rear by the rear _, j �� rear by the rear rear by the rear _, j �� mold the work of the band were detected and used to profile the surface of the trap for mold analysis. 2, the composition of three-dimensional measuring instrument and measurement principles of the system hardware configuration Figure 2.1 (Figure 1) 2.2 software system measuring principle measuring principle shown in Figure 2. Measuring principle: a. In the mold assembly datum, coordinate plane to make measurements. b. The probe placed in the center and work die hole with an altitude of about the middle to start the two-sided measurement procedures. c. Automatically detect the probe A,[link widoczny dla zalogowanych], B point, and calculate the midpoint M, then raise a security height H. In summary, the accuracy of machine tools and the ~ n-r_ quality assurance in addition to the requirements of the machine itself, the operation of the operator, use and maintenance of Table 1 have a great relationship, so be sure to follow the special requirements of machine tools to make rational use of more improved processing quality. Copper material graphite electrode material requirements of fine quality, dense, uniform particles, porosity, high strength of high purity graphite impurities, by forging, machining stability is best to use copper was stable power stability better than graphite. Difficult to burn surface finish no higher than level not higher than the V7 V7 V8-class punch of a loss of oil on the electrode is not sensitive to sensitive to oil pressure loss increases impulse discharge rest time requirements for some large some small low-loss ( 10 peak current (A) ~ the peak current (A) low loss ( <1%) processing to achieve the best finish, and when the processing speed of up to four grade 10mm3/rnin5 up 2--4mm3/min:, t; tj

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