Many customers will find that during the use of the tool handle, the jumping momentum of the tool handle measured on the machine tool is very large, and many customers suspect that there is a problem with the tool handle. Is there really a problem with the handle? Let's make some analysis:
In fact, the runout measured on a machine tool is not the runout of a single tool handle, but rather the comprehensive runout of the entire system where the machine tool spindle, tool handle, and cutting tool (or measuring rod) are clamped together. This runout is not only related to the machine tool, tool handle, and blade, but also to whether the clamping method and operation are standardized (such as whether the spindle shank and clamping sleeve of the tool handle are clean, etc.).
However, does the small runout of the tool handle measured on a machine tool necessarily indicate a good runout accuracy of the tool handle? Actually, it's not necessarily! On the same spindle with relatively large runout, install a tool handle with good runout accuracy and a tool handle with poor runout accuracy to measure the runout, and the results may be exactly the opposite. Even if it is the same spindle and the same tool handle, the tool handle is rotated 180 ° back and forth twice and installed on the spindle to measure the jump momentum, the results may be completely different.
After the above analysis, I want to measure the runout accuracy of the tool handle on the machine tool:
1. Firstly, it is necessary to ensure that the runout accuracy of the machine tool spindle is trustworthy. You can use a measuring stick in advance to measure whether the runout accuracy of the machine tool spindle is within the required range.
2. Ensure that all mating surfaces of the machine tool spindle, tool handle, and cutting tool are clean, and that the correct method of operation is used.
However, if a large runout of the tool handle is detected on the customer's site, the customer will first suspect that it is a problem with the tool handle. Below is a method to quickly determine whether the problem is with the tool handle or the machine tool spindle in this situation:
First, mark the position of the tool handle corresponding to the maximum runout value, and then rotate the tool handle 180 ° to install it on the machine tool spindle to measure the runout. If the maximum runout value is still near the marked position of the tool handle, it indicates that there is a problem with the tool handle; If the maximum runout occurs near the relative position of the tool shank mark, there is a problem with the spindle.