Dial-indicating a round part on a mill скачать в хорошем качестве

Dial-indicating a round part on a mill

This is a demonstration to show the procedure of finding the center of a round feature on a CNC mill. The video shows finding an outside boss feature, but finding the inside bore would be the same concept. The final position is approximately 0.001" concentric with the workpiece. You can achieve more accurate positions by further fine-tuning the coordinates. Using a dial-indicator with more precise resolution can also help, though they have a smaller dial range so the initial steps can be more difficult. Take note - the dial indicator used in this video has a range of one revolution forward or backward, and each dial revolution is 0.030", so the full working range of the indicator is 0.060. This means you must VISUALLY align the indicator tip within this range. Dial indicators with greater accuracy will typically have a reduced window (0.012" total, etc).