A knife to adjust tool and spindle center line etc.

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The selection principle of the knife point:
(1) the knife point location selected should facilitate the mathematical treatment and makes the program simple
(2) on the machine easy to find it
(3) for check processing
(4) the machining error caused by small
The tool is the main operation in NC machining and important skill. Under certain conditions, the accuracy of the knife can decide the machining precision parts, at the same time, it also has a direct impact on the efficiency of NC machining efficiency.
The tool is generally divided into manual setting and automatic tool setting two categories. At present, most of the CNC machine tool (especially lathe) using manual tool, the basic methods are: positioning of the blade, the blade, the blade of ATC optics and try to cut knife.
In FANUC numerical control system setting method is commonly used is the cutting tool setting method to set the tool offset compensation test. The steps are as follows:
(1) with a cylindrical turning tool test an outer circle, along the Z axis and keep the X + exit coordinate invariant. Measurement of outer diameter, denoted as D.
(2) according to the "OFSET SET" (offset settings) key, enter the "shape" compensation parameter setting interface, move the cursor to the corresponding with the cutter location, location, input Xd, press the "measure" button, the system automatically calculates the X direction of the cutter offset
(3) with a cylindrical turning tool test workpiece end face along the X axis, and exit and keep the Z coordinate invariant.
(4) according to the "OFSET SET" button, enter the "shape" compensation parameter setting interface, move the cursor to the corresponding with the cutter location, location, input Z0, press the "measure" button, the system automatically calculates the Z direction of the cutter offset. Also can be "input" offset.
(5) the tool offset to set the call using T code in the CNC program.
This approach is easy to understand, simple operation, programming and tool can be completely separated etc.. Application of it in the tool is the most common.

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Introduction

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