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스레딩 단계 를 선택 하는 방법
How to #Select Threading Steps in #YoonSun Lathe with normalized tables
한국 의 #yoosun # 선반
One of the tasks that can be performed on a parallel lathe is to make threads of various pitches and sizes, both external on shafts or internal on nuts. For this, the universal parallel lathes incorporate a mechanism called Norton Box, which facilitates this task and avoids mounting a gear train each time a thread is wanted.
The Norton box is a mechanism composed of several gears that was invented and patented in 1890, which is incorporated into parallel lathes and gave a solution to the manual change of gears to fix the steps of the pieces to be threaded. This box can consist of several movable gear trains or a tilting gear train and a gear cone. The box connects the movement of the lathe head with the tool carriage that incorporates a square threaded spindle.
The best achieved system includes a gearbox with several reducers. In this way, with the manipulation of several levers, different feed rates of the tool carriage can be set, allowing a wide variety of both metric and Withworth thread pitches to be made. There are them in an oil bath and in a dry one, with gears carved in one way or another, but basically it is a gearbox.
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27 авг 2019
