Digital program control lathe is generally referred to as Disc Type Special Machine, which is a high-efficiency automatic lathe controlled by numerical control equipment or computer. It generally uses automatic control technology, computer technology, fine measurement technology, hydraulic and pneumatic technology, and uses new technology in the lathe structure. The Disc Type Special Machine refers to the various operations required for machining, such as shifting speed, loosening the workpiece, feeding, reversing the tool, starting and parking, automatic supply of coolant, etc., and the tool is related to the displacement between the workpiece.
Disc Type Special machines have spindle parts, some have only one spindle part, have more than one. Disc Type Special Machine spindle refers to the axis on the machine tool that is used to drive the workpiece or tool rotation. It is a hollow stepped shaft. Disc Type Special Machine hollow shafts take up a relatively large amount of space, but the weight can be reduced. According to the mechanical analysis of the material, when the torque is transmitted through the shaft, the higher the effect of transmitting the effective torque, because the external view is from the radial section. When the Disc Type Special Machine shaft needs to transmit a large torque, a thicker shaft diameter is required. Since the effect of transmitting torque in the axial part is small, hollow is usually used to reduce the weight of the rotating shaft. A spindle unit usually consists of a spindle, a bearing, and a transmission unit (gear or pulley).
The processing process of small Disc Type Special Machine is similar to that of general lathes, but because the Disc Type Special Machine is a clamping and continuous active processing to complete all turning processes, the following aspects should be paid attention to. Reasonable selection of cutting parameters: For high-power metal cutting, the processed data, cutting things, and cutting conditions are the three major elements. These determine the processing time, tool life and processing quality. An economical and useful processing method must be a reasonable selection of cutting conditions. Three elements of cutting conditions: cutting speed, feed rate and cutting depth directly cause tool damage. With the improvement of cutting speed, the temperature of the tool tip will rise, and mechanical, chemical, and thermal wear will occur. The cutting speed is improved by 20%, and the tool life will be reduced by 1/2. The feed conditions and the wear behind the tool are associated with a very small range. But the feed amount is large, the cutting temperature rises, and the rear wear is large. It has less effect on the tool than the cutting speed. Although the effect of cutting depth on the tool is not as large as the cutting speed and feed amount, the hardening layer of the cutting data will also affect the life of the tool when the fine cutting is deep cut.
The user should select the cutting speed according to the material to be processed, hardness, cutting condition, material variety, feed rate, cutting depth, etc. The selection of suitable processing conditions is selected on the basis of these elements. Select high-quality Disc Type Special Machine custom processing plant, regular, stable wear to reach the life is the ideal condition. However, in actual operation, the selection of tool life is related to tool wear, change of machining scale, appearance quality, cutting noise, processing heat and so on.
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