外文翻译---金属切削加工基础知识节选(编辑修改稿)

外文翻译---金属切削加工基础知识节选(编辑修改稿)内容摘要：

ing metal layer intermittent or continuous input of cutting a movement, with the main movement coordination can becontinuously removed metal layer， to obtain the desired surface. Feed motion is characterized by low speed, low power consumption, can be posed of one or more exercise. Figure 21 in excircle turning along the axial direction of the longitudinal feed motion is continuous, radially along the workpiece transverse feeding motion, it is intermittent. （ 3） Layer cutting Cutting layer refers to cutting cutting workpiece to a single stroke the resection of the workpiece material layer. Shown in Figure 21, the workpiece rotates a circle back to the original level, because the tool longitudinal feed motion is continuous, the cutting tool from the position I had moved to position II, in the two position of the formed workpiece material layer (Figure ABCD region ) is cutting layer. （ 4） The cutting process is formed on the workpiece surface 大连交通大学 2020 届本科毕业设计（论文）外文翻译 The workpiece in the cutting process in the formation of the three surfaces: one of the surfaces to be processed is refers to the workpiece to be cut away the surface figure external circular surface 1。 the transition surface is the workpiece cutting edges are cutting surface, as shown in the figure 2 surface。 surface refers to the workpiece by the cutting process after the formation of the the surface of external circular surface, as shown in figure 3. Cutting Between the tool and the workpiece with relative movement can be cutting, used to measure the movement of cutting size parameter called the cutting parameters, cutting speed, feed rate and depth ( depth ) called the cutting elements of the three. It is only reasonable to determine the amount of cutting can be carried out smoothly cutting. （ 1） Cutting speed The cutting edge of selected points on the workpiece relative to the main movement speed, unit or . Because each point on the cutting edge of the cutting speed is different, when calculating the maximum cutting speed cutting tool used on behalf of the cutting speed. The outer circle lathe turning cutting speed calculation formula: ( 22 ) In — the workpiece surface diameter ( mm ), — workpiece speed ( ). (2) Feed Cutting tool in the direction of feed on the workpiece relative to the displacement of said feed, different processing methods, the cutting tool and the cutting movement in different forms, the feed formulation and measurement methods are also different. Feed unit ( used for turning, boring )or Stroke ( used for planing, grinding etc.). The feed that feed movement speed. Feed velocity can also be used to feed speed ( pany ) Or feed per tooth ( used for milling cutter, reamer, cutter, unit is Tooth) Express. In general （ 23） 大连交通大学 2020 届本科毕业设计（论文）外文翻译 Type of — main motor speed（ ） , — the cutter teeth. (3) Back cutting depth (depth of cut ) In the direction perpendicular to the direction of main movement and feed movement in the direction of the working plane measurement of workpiece and the cutting tool edge cutting surface contact length. For cylindrical turning, back cutting depth for the workpiece on the machined surface and the vertical distance between the surface to be machined, the unit . That is ( 24 ) In — the workpiece surface diameter ( ), — machined surface diameter ( ) 3 Cutting tool basic knowledge In the process of metal cutting, cutting work is done directly tool, and the cutting tool is fit for cutting work, mainly by cutting part of the tool geometry and cutting tool materials reasonable physical, mechanical properties. Cutting part of the tool structural elements Cutting tool type are many, varied structure. Lathe tool, planer is a singlepoint cutting tool, and the drill bit, cutter, cutter, although they differ in shape, but they are cutting part of the structural elements and geometry have many features in mon, so a correct understanding and understanding a singlepoint cutting tool is the recognition and understanding of knife with fo。