Two Mathematical Problems in Lathe Machining
Luo guilie
Study on improving the smoothness of forward rotating surface. First, the question is raised. When machining 45 steel bar excircle on lathe, the drawing requires the surface finish to be ▽\u 5. How to correctly select feed S and tool tip radius R? Second, the derivation of the formula When the lathe processes the excircle of the workpiece, the trajectory of the blade on the workpiece is a spiral line. Therefore, when we enlarge the workpiece, we can see that the surface of the workpiece is not a smooth cylindrical surface, but a thread surface with a small pitch (equal to the feed). This is one of the reasons for the rough surface. In the process of machining, the actual roughness H_ of the machined surface is often greater than the theoretical height h due to the plastic deformation of the machined surface and the friction between the tool and the workpiece surface. Usually, the average value H_ flat or its average root deviation H_ square of the actual roughness height H_ real of the workpiece surface is used to represent the surface smoothness. For example, microscopic
Author: Department of Mathematics, Guangxi Normal University
Key words: the mathematical problem of the arc radius of the turning tool tip on the workpiece surface; Surface smoothness of bus turning tool; Small terminal diameter; High surface cone.
DOI:CNKI:SUN:gxss . 0. 1974- 1 1-0 12
Text snapshot:
Turn and add K. Study on improving surface smoothness ①. Suggestions on scratching Liao when machining Jr screen excircle with lathe: The surface smoothness is required to be V when returning paper. How to correctly select and express Ji Jiu and the feed rate of tool tip radius 1? Second, the formula language uses a lathe to process the external leap law of the workpiece. The motion trajectory of the blade on the workpiece is spiral, so it can be seen that the surface of the workpiece is not smooth by magnifying observation.
ki . com . cn/Article/CJFDTOTAL-gxss 1974 1 10 12 . htm
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