Tool setting means that after the workpiece is aligned and tightened on the CNC machining center, the machine coordinate of the origin of the workpiece coordinate (programming coordinate) is determined (the value of X, y, Z of g54 is determined). Because a complete machining process of a workpiece may involve several or even dozens of cutting tools, because the trial cutting method is relatively primitive and the accuracy of tool setting is poor, it is rarely used. So how to determine the tool point of CNC machining center? After the center is aligned and tightened, determine the machine coordinate of the origin of the workpiece coordinate (programming coordinate) (determine the value of X, y, Z of g54). Because a complete machining process of a workpiece may involve several or even dozens of cutting tools, because the trial cutting method is relatively primitive and the accuracy of tool setting is poor, it is rarely used. So how to determine the tool point of CNC machining center?
CNC machining of aluminum parts
Tool setting point is the reference point used to determine the position of workpiece coordinate system in the machine coordinate system after the workpiece is aligned and clamped on the machine tool. The tool setting point can be selected on the workpiece or clamping positioning element, but there must be an accurate, reasonable and simple position corresponding relationship between the tool setting point and the workpiece coordinate point, so as to facilitate the calculation of the position of the workpiece coordinate point on the machine tool (the machine coordinate of the workpiece coordinate point). The tool setting point should coincide with the workpiece coordinate point.
The common tool setting methods of CNC machining center mainly include automatic tool setting method, tool setting instrument tool setting method, etc. How to realize the two common methods?
1. Automatic tool setting
The automatic tool setting is realized by using the tool detection function configured by the CNC machining center. This device can automatically and accurately measure the length of each tool in each coordinate direction, and can automatically correct the tool error value. The whole detection and correction process can be realized on the basis of the normal operation of the machine tool. This tool setting method is completely realized by electronic control device, which eliminates the error of manual tool setting, so the accuracy and efficiency of tool setting are higher.
2. Tool setting method of tool setting instrument
Tool setting instrument is the main tool setting method for CNC machining center because of its high economy. There are two kinds of tool setting instruments: inside and outside. The tool setting of the external tool setting instrument needs to be calibrated outside the machine tool in advance, and then the tool can be used after being installed on the machine tool; the tool setting of the internal tool setting instrument is a method to directly install the tool on a fixed position of the machine tool for measurement.
