機(jī)械類車床外文翻譯-展示頁(yè)
2025-05-26 23:48本頁(yè)面
【正文】 let inserted into the spindle and secured either by a drawbar, or by a collet closing cap on the spindle. Suitable collets may also be used to mount square or hexagonal workpieces. A circular metal plate with even spaced holes around the periphery, mounted to the spindle, is called an index plate. It can be used to rotate the spindle a precise number of degrees, then lock it in place, facilitating repeated auxiliary operations done to the workpiece. Modes of use When a workpiece is supported at both ends, it is more stable may be applied to the workpiece, via tools, at a right angle to the axis of rotation, without fear that the workpiece may break loose. When a workpiece is mounted with a certain axis of rotation, worked, then remounted with a new axis of rotation, this is referred to as eccentric turning or multi axis turning. The result is that various cross sections of the workpiece are rotationally symmetric, but the workpiece as a whole is not rotationally symmetric. This technique is used for camshafts, various types of chair legs, etc. Varieties The smallest lathes are jewelers lathes or watchmaker lathes, which are small enough that they may be held in one hand. Although the workpieces machined on a jeweler39。s hands to hold the woodturning tools. The pedal was usually connected to a pole, often a straightgrained sapling. The system today is called the spring pole lathe. Spring pole lathes were in mon use into the early 20th Century. A twoperson lathe, called a great lathe, allowed a piece to turn continuously (like today39。畢業(yè)設(shè)計(jì)（論文） —— 外文翻譯（原文） Lathe 來(lái)源： A lathe is a machine tool which spins a block of material to perform various operations such as cutting, sanding, knurling, drilling, or deformation with tools that are applied to the workpiece to create an object which has symmetry about an axis of rotation. Lathes are used in woodturning, metalworking, and glassworking. Lathes can be used to shape pot
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