Cnc Lathe Thread Cutting Knife Method

Intelligent-seeking-location processing technology is a kind of modern manufacture technology which is developed in recent years. It replaces traditional "fixation-clamping-processing" manufacture mode with fire-new "fixation- seeking location-processing" manufacture mode, which can largely improve the smartness of bottom layer manufacture procedure of the corporation and is the important base to realize smart manufacture among the corporations.This paper research the question of adjusting tool when processing screw making use of the numerical control method along original groove. From analyzing numerical control (cutting) principle about screw we can come to the conclusion that in order to fulfill the process of this kind of workpiece the key is to realize consistency between the zero-position signal positions of main shaft of lathe and the beginning point of original screw helix. At the same this paper introduces the principle of three feasible ways to adjust tool that can realize consistency between the zero-position signal positions and the beginning point of original screw helix. Among these three adjusting methods, manual adjusting tool adopt traditional "fixation and processing" method, and that automatic or semi-automatic adjusting tool is to use the "seeking location" method of intelligent-seeking-location processing technology.For two methods about automatic or semi-automatic adjusting tool, this paper puts forward concrete scheme and introduce the testing situation to this two methods of adjusting tool. From these tests, we can come to the conclusion that these two methods are feasible in practice.This paper introduces the implementing scheme in detail from two sides: hardware structure and software design. Semi-automatic adjusting tool is realized through dynamic adjusting system of zero-position signal based on 8031 SCM. This dynamic adjusting system of zero-position signal can carry through real-time dynamic adjustment to zero impulse-signal of main shaft of lathe. Using this adjusted zero-position signal as control signal, we can fulfill numerical control manufacture of this kind of workpiece.The structure of the dynamic adjusting system of zero-position signal introduced in this paper is simple, and the control precision is high, and if using this system the changing to numerical control machine tools is very simple, just connecting this system to zero-position signal output-end of photoelectric encoder of main shaft to replace its zero-position signal output. Moreover because of its practicality and simpleness, it has popularizing and application value to a certain extent.