Speeds and feeds
（重定向自Cutting speed）
![A line drawing showing some basic concepts of speeds and feeds in the context of lathe work. The angular velocity of the workpiece (rev/min) is called the](/Images/godic/202501/07/Speeds_and_feeds_00014359.png")
![Milling cutter paused after taking a cut. Arrows show the vectors of various velocities collectively known as speeds and feeds. The circular arrow represents the angular velocity of the spindle (rev/min), called the](/Images/godic/202501/07/StimUmfangsfraesen2B4359.png")
The phrase speeds and feeds or feeds and speeds refers to two separate velocities in machine tool practice, cutting speed and feed rate. They are often considered as a pair because of their combined effect on the cutting process. Each, however, can also be considered and analyzed in its own right.