Two ways to compensate for tool length

1) Use the actual tool length as tool length compensation (this method is recommended). Using the tool length as compensation means using the tool setter to measure the tool length, and then inputting this value into the tool length compensation register as tool length compensation. The reasons for using the tool length as tool length compensation are as follows：

First, using the tool length as tool length compensation can avoid the constant change of tool length offset when processing the workpiece differently. In this way, the tool can be used on different workpieces without changing the tool length offset. In this case, you can create a file for each tool according to certain tool numbering rules, and use a small sign to record the relevant parameters of each tool, including length, radius and other tool information. All processing enterprises adopt this method to manage the tools of CNC processing equipment. For those companies with a special tool management department, there is no need to personally tell the operator the tool parameters. At the same time, even if the tool is removed due to the capacity of the tool magazine and will be reinstalled next time, it only needs to be based on the tool length value on the nameplate, which is used as the tool length compensation without further measurement.

Secondly, using the tool length as the tool length compensation allows the machine tool to perform processing while measuring the length of other tools on the tool setter, without having to occupy the machine tool time due to the tool setting on the machine. full play to the efficiency of the machining center. In this way, when the spindle moves to the programmed Z coordinate point, it is the Z coordinate value after adding (or subtracting) the tool length compensation to the spindle coordinate.

2) Use the distance value (positive or negative) between the tool tip and the programmed zero point in the Z direction as the compensation value. This method is suitable for use when only one person operates the machine and the time for using the tool setter to measure the tool length is not enough. Therefore, when using one tool to machine another workpiece, the tool length compensation setting must be reset. When using this method to compensate for the tool length, the compensation value is the distance the tool tip moves when the spindle moves from the machine’s Z coordinate zero point to the programmed workpiece zero point, so the compensation value is always negative and very large.