刀具预调仪又叫对刀仪，是对数控机床刀具进行检测的主要仪器设备。对新刀以及刀具的磨损情况能进行准确的测量，从而保证数控机床的加工精度。

随着加工中心的效率和精度要求越来越高，加上数控机床的日益普及，对刀具预调仪的要求也越来越高。刀具预置测量仪主要用于检测数控机床、加工中心和柔性制造单元上的镗铣床刃口X/Z坐标数据。它还可以用来检查刀尖的角度、圆角、刀刃的形状和多刃刀具的跳动。它是专门为简化刀具预设和测量而设计的。该仪器的使用可以减少机床试切次数，缩短辅助时间，保证加工质量，实现刀具管理的现代化。

主要参数有：

综上所述，刀具预调仪或对刀仪的作用就是通过对数控机床刀具的测量，保证刀具磨损在合理区间，以保证加工精度。

Tool presetting instrument, also known as tool setting instrument, is the main instrument and equipment for the detection of NC machine tools. It can accurately measure the wear of new knives and cutters, so as to ensure the machining accuracy of CNC machine tools.

With the increasing efficiency and accuracy requirements of machining centers and the increasing popularity of CNC machine tools, the requirements for tool presetters are also higher and higher. The tool preset measuring instrument is mainly used to detect the x/z coordinate data of the boring and milling machine edge on CNC machine tools, machining centers and flexible manufacturing units. It can also be used to check the angle of the tip, the fillet, the shape of the blade and the runout of the multi blade tool. It is specially designed to simplify tool presetting and measurement. The use of this instrument can reduce the number of machine tool trial cutting, shorten the auxiliary time, ensure the processing quality, and realize the modernization of tool management.

主要参数有：

综上所述，刀具预调仪或对刀仪的作用就是通过对数控机床刀具的测量，保证刀具磨损在合理区间，以保证加工精度。