Talking about the selection of CNC wire cutting machine (Figure)

With the development of science and technology, mechanical manufacturing technology has undergone profound changes. Due to the strong demand for diversification of products in the society, the proportion of multi-variety, small- and medium-sized batch production has increased significantly. It has been difficult to adapt to high-efficiency, high-quality and diversified processing requirements using traditional ordinary processing equipment. The application of machine tool numerical control technology has greatly shortened the preparation time of machining and the continuous improvement of the whole process automation of machining, and also enhanced the ability of the manufacturing system to adapt to various production conditions.

The basic components of CNC wire-cutting machines include machining programs, high-frequency power supplies, drive systems, CNC systems, and machine tools. Machining programs can be written manually (such as the early 3B instructions), and now they are all drawn on a computer (such as CAXA, HL, HF, YH, etc.), and then the machining program is generated. The input of the program can be manually input by the panel of the numerical control system (single board machine), or can be transmitted through the 232 serial port of the computer, or can be transmitted by the computer USB interface.

When purchasing a CNC wire-cutting machine, it can be considered from three aspects. First, whether the machine body can meet its own processing requirements, and the quality of the machine tool. Next is the numerical control system. There are many types of numerical control systems. Choosing the right system is the key to purchasing CNC machine tools. Finally, the drive unit is also the key to machine control. Different drive units can achieve different machining accuracy. When selecting the drive unit, the appropriate drive unit should be selected according to the precision requirements of the machined workpiece.

The following analysis is carried out from three aspects: machine body, numerical control system and drive unit:

1, the choice of machine body

First of all, the machine structure design and the size and weight of the workpiece should be optimally matched. For medium and large load tables, a fully supported machining center structure is used. This design can have sufficient load bearing, stiffness, precision, vibration resistance and precision retention. Secondly, the mechanical transmission of the feed system uses a ball screw. The ball screw is superior to the triangular thread screw and the trapezoidal thread screw, and the diameter of the screw is required to be as large as possible to increase the rigidity. Once again, the guide rails and the motion guide rails of the workbench are the key to ensuring the accuracy of the motion of the workbench. Users should pay great attention to the selection. Firstly, observe the cross-section of the guide rail. Under the same conditions, the thicker the rigidity, the better the rigidity, and the more difficult the deformation is in the process, so as to ensure the highest precision and durability of the machine tool in long-term work. There are several common rail structures on the market today:

1 inlaid steel ball type rolling guide;

2 inlaid steel roller type rolling guide;

3 linear rolling guides.

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