from The Century Dictionary and Cyclopedia
- n. The toothed wheels, or the train of them, by which the speed of the feeding or cutting apparatus of a lathe or other machine-tool is adjusted relatively to the speed of the spindle or the work.
Sorry, no etymologies found.
By the feeding mechanism and the change-gear train the stepped feeding speeds are set, the thread cutting with different pitches is enabled, and the leadscrew and/or feed shaft is driven.
The main parts of the gear box are the headstock with the work-driving spindle, the main driving mechanism with the drive shaft as well as the feeding mechanism and the change-gear train.
- setting various spacings, e.g. in the case of change-gear quadrants; to tension belt drives and to ensure different setting ranges for assembling constructional elements of different order or magnitude;