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Classification of CNC Machine

Published on:2018/6/25 20:32:42   Reading:times


Classification of CNC Machine

 

CNC machine developed from CNC milling machine. The biggest difference from the CNC milling machine is that the CNC machine has the ability to exchange cutting tools automatically. It can be installed different knife tools on the tool library, the machining tools on the spindle can be changed by automatic tool changer in a clamping device to achieve a variety of machining functions. CNC machine is a highly efficient automatic machine tool which is composed of mechanical equipment and numerical control system,It is suitable for machining complex parts. CNC machine is often divided into vertical machining center and horizontal machining center according to the main axis in the space. The spindle of the CNC machine is vertical in the space, which is called vertical machining, and the spindle is horizontal in the space. The spindle can be changed vertically and horizontally. It is called vertical horizontal machining or five axis machining, also called compound machining. The number of columns in the CNC machine, there are single column type and double column type. There are three axis, two linkage, three axis three linkage, four axis three linkage, five axis four linkage, six axis five linkage and so on. The three axis and the four axis are the number of moving coordinates that the machining center has. The linkage refers to the control system that can control the coordinate number of the motion at the same time, so as to realize the position and speed control of the tool relative to the work piece. According to the quantity and function of the worktable, there are single worktable machining center, double worktable machining center and multi worktable machining center. According to the machining accuracy, there are common machining and high precision machining.The CNC machine has a resolution of 1 m, a maximum feed speed of 15 to 25m/min, and a positioning accuracy of l0 m. The resolution of the high precision machining center is 0.1 M, the maximum feed speed is 15 to 100m/min, and the positioning accuracy is about 2 m. Between 2 and l0 m, more than 5 m can be called precision grade. The CNC machining center is a CNC machine tool with more complete functions. It concentrates the functions of milling, boring, drilling, tapping thread and cutting thread on one device, making it have many kinds of technological means. A tool magazine is set up in the machining center, and different kinds of tools or gauges are stored in the magazine, and the process is selected and replaced by the program automatically. This is the main difference between CNC milling machine and CNC boring machine. In particular, it is necessary to use tooling and special equipment to ensure the quality and efficiency of the products. This will save a lot of time and cost for the development and upgrading of new products, so that enterprises will have strong competitiveness.


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