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Kunshan Xuwen Precision introduction: Precision mold parts processing equipment and technology what?

Kunshan Xuwen Precision introduction: Precision mold parts processing equipment and technology what?

Precision mold manufacturing is inseparable from those advanced processing equipment. The main processes of precision mold manufacturing are CNC milling, slow wire cutting, electric discharge, grinding, turning, measurement, automation and so on.

First, CNC milling processing

From the traditional ordinary milling machine to the three-axis machining center, and then developed to today's five-axis high-speed milling, the processing of complex three-dimensional profile parts can almost become a reality, and the hardness of materials is no longer a limited problem. The main cavity and profile of the plastic mold are completed by CNC milling. The rapid development of the plastic mold manufacturing industry is mainly due to the innovation of CNC milling technology.

Two, slow wire cutting processing

Slow wire cutting is mainly used for the processing of 2D and 3D straight surface parts such as punching die, plastic die and powder metallurgy die. Among them, the proportion of processing stamping die is the largest, and the processing of punch die, punch fixing plate, concave die and discharge plate and many other precision holes of stamping die, slow wire cutting processing is an indispensable key technology. In injection mold manufacturing, common applications are insert holes, top pinholes, inclined top holes, cavity clear Angle and slider processing, generally speaking, the processing accuracy requirements are not as high as stamping dies.

Slow wire machining is a high precision machining method, high-end machine tools can achieve less than 3μm processing accuracy, surface roughness up to Ra0.05μm. At present, automatic wire cutting of electrode wire of 0.02 ~ 0.03 ㎜ can be achieved, and the practical cutting efficiency can reach about 200㎜2/min.

Third, electric discharge machining

Edm is suitable for machining complex parts such as precision small cavity, narrow slit, groove and corner. When the tool is difficult to reach the complex surface, where deep cutting is required, the EDM process is superior to milling processing in places where the length-to-diameter ratio is particularly high. For the machining of high-tech parts, milling electrode re-discharge can improve the success rate, compared with high and expensive tool costs, discharge machining is more suitable. In addition, where EDM finishing is specified, EDM is used to provide fire pattern surfaces.

Four, grinding machine processing

The grinding machine is a precision equipment for finishing the surface of a part, especially the hardened workpiece. The grinding machines used in mold processing are mainly surface grinding machines, universal internal and external circular grinding machines, coordinate grinding (PG optical curve grinding machines).

Xiaoping grinding machine is mainly used to process small size mold parts, such as precision inserts, precision molds, sliders and so on. Large water grinding machine is often used for larger size template processing. Now, the surface grinding wheel line speed and the high-speed movement of the table has become a common trend, due to the use of linear guide rail, linear motor, static screw and other advanced functional components technology, the movement speed has made great progress, in addition to constantly improve the grinding wheel dressing technology.

Five, CNC lathe

CNC lathes are also commonly used machining equipment in mold workshops. Its processing scope is all rotating parts. Due to the high development of numerical control technology, the complex shape of the rotary body can be easily realized by programming, and the machine tool can automatically change the tool, which greatly improves the production efficiency. The machining accuracy and manufacturing technology of CNC lathes are becoming more and more perfect, and there is even a trend to replace grinding with turning. It is commonly used to process the round insert, stay head, positioning ring and other parts in the mold, and is widely used in the pen die and the bottle die. In fact, the function of advanced CNC lathes is no longer limited to the "car", has been expanded to turn and milling complex integrated machine tools, a complex, multi-process parts, and even can be processed all at once.

6. Measurement

From the digital mapping involved in the early stage of mold design, to the measurement of mold processing processes, to the measurement of mold acceptance and the measurement of mold repair in the later stage, high-precision measurement equipment plays an important role.

Seven, quick clamping positioning system and automation

A mold part often needs to use a variety of processes to be manufactured. In this process, the parts should be continuously clamped and corrected, which takes a lot of time, the machine tool is also in idle state, and the processing capacity of the expensive equipment has not been fully utilized. With the increasingly fierce competition in the manufacturing field. Shorter production cycles are part of the trend. Foreign fixture manufacturers, using a set of stable and accurate reference system, to achieve milling, turning, measurement, EDM and other processes of the unified reference exchange, in the machine tool only about a minute to quickly complete the electrode clamping and alignment, repeated positioning accuracy within 3μm, to minimize the setting time, greatly improve the actual running time of the machine tool. This has proved to be an essential condition for modern production.