How to set the tool on the cnc CNC lathe?
Often after the tool is installed, we need to perform tool setting before executing the machining program to determine the starting point. Tool setting is often a headache for operators. This takes time, especially during multi-tool machining, and also requires measuring tool offsets.
Steps for tool setting
To put it simply: first adjust to the manual gear, then crank the hand until it is close to the workpiece, remember the coordinates, retreat to the end of the workpiece, and then feed the X-axis about 1mm, and then measure the outer diameter with a knife , so that the X-axis is aligned. Note that when the outer circle is finished, the X-axis cannot be moved, and then retreat to the end of the workpiece. It is enough to cut the end face. Manually rotate the X-axis to cut, and then continue to manually rotate the X-axis to exit Come on, this is the Z coordinate, generally Z=0.
There are three main methods of tool setting for CNC lathes:
1. General knife setting
(1) General tool setting refers to manual tool setting using relative position detection on the machine tool. The following takes Z-direction tool setting as an example to illustrate the tool setting method.
(2) After the tool is installed, first move the tool to manually cut the right end face of the workpiece, then withdraw the tool along the X direction, and input the distance N between the right end face and the machining origin into the numerical control system, and complete the Z direction tool setting process of the tool.
(3) Manual tool setting is the basic tool setting method, but it still does not jump out of the "trial cutting-measurement-adjustment" tool setting mode of traditional lathes, which takes up more time on the machine tool. This method is relatively backward.
2. Tool setting with external tool setting instrument
The essence of off-machine tool setting is to measure the distance in the X and Z directions between the imaginary tool tip point of the tool and the tool table reference. Using the tool setting instrument outside the machine, the tool can be calibrated outside the machine tool in advance, so that the tool setting length can be input into the corresponding tool compensation number after installing the machine tool, as shown in Figure .
3. Automatic tool setting
Automatic tool setting is realized through the tool nose detection system. The tool tip approaches the contact sensor at a set speed. When the tool tip touches the sensor and sends a signal, the numerical control system immediately records the coordinate value at that moment and automatically corrects the tool compensation value.
