Project ForgeManufacturing Engineering
Machining Processes
GATE 2022
Easy
Which one of the following CANNOT impart linear motion in a CNC machine?
- ALinear motor
- BBall screw
- CLead screw
- Chain and sprocket
Explanation
Linear motors directly produce linear motion; ball screws and lead screws convert rotary motion to linear motion via a threaded shaft/nut mechanism. Chain and sprocket drives transmit rotary motion between shafts (or convert rotary to linear motion of a conveyor-like chain loop) but are not used as a precision linear-positioning drive for a CNC axis.
Source: GATE ME 2022 Session 2 (ME-2) (2022)
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