Busbar processing machine threading method

First, the general method of processing threads

    There are generally four methods for machining the thread in the CNC lathe bus processing machine; the straight-forward method, the oblique-feed method, the left-right cutting method and the grooving knife rough-cutting method.



    1. Straight-forward method; (Threading knife intermittently feeds to the depth of the tooth (when the trapezoidal thread is machined by this method (the three sides of the thread turning tool are involved in the cutting (causing the machining of the chip removing difficulty (the cutting force and the cutting heat increase) Sharp tip wear (when the feed rate is too large (there may also be a knives phenomenon. Obviously (processing large pitch trapezoidal threads and worms is not advisable).

    2, the oblique advance method; (the thread turning tool is intermittently fed obliquely to the depth of the tooth along the angular direction of the tooth (when the trapezoidal thread is machined by this method (the thread turning tool always has only one side cutting edge to participate in the cutting (so the chip discharging is relatively smooth) (The force and heat of the tool tip are improved (it is not easy to cause the knife in the turning).

    3. Left and right cutting method: As shown (the thread turning tool feeds the tooth depth along the angular direction of the tooth shape) (this method is the same as the oblique method (implemented by macro programming on a CNC lathe).

    4, busbar processing machine grooving knife rough cutting groove method; (This method first use the grooving knife rough cutting groove (and then use the trapezoidal thread turning tool to machine the two sides of the thread (this method is more difficult to achieve in the CNC car.



    Second, the characteristics of worm and large pitch trapezoidal thread and processing method

      Turning worm and large lead thread (whether it is inclined or left and right) (the cutting resistance is very large (previously it was only possible to use high speed steel turning tools for low speed turning) (production efficiency is very low. It can also be processed with carbide tools) (I have to try to reduce the cutting depth of the blade (so I used the "layered cutting" method to process.

    Third, the macro program of processing worm and trapezoidal thread

    1, the choice of tools; because SMEs buy more economical CNC lathes (common domestic machine is Guangzhou CNC and Huazhong CNC (so this article uses a wide number of 980TD as an example to program processing. The tool is hard

    Busbar machining alloy alloy turning tool (the width of the cutter head is slightly smaller than the groove bottom width of the trapezoidal thread.