| 摘要 |
A drilling machine includes a stand unit, a drilling spindle unit, and a drive motor unit. A power control member controls a drive motor of the drive motor unit so as to control the rotational speed of the drive motor. A driving shaft of the drive motor drives a driving shaft sleeve of the drilling spindle unit to bring a working spindle in the driving shaft sleeve. The rotational speed of the drive motor is controlled by the power control member only. The present invention has a simple and endurable configuration, and is convenient for use and has stable configuration.
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