Physics · Machining and Machine Tools
The fundamental reason why the carriage must remain positively connected to the lead screw during threading is to ensure that:
- 1Backlash is fully eliminated within the rack-and-pinion feed system
- 2Automatic adjustment occurs to compensate for gradual tool wear
- 3Tool movement stays precisely synchronised with the spindle rotation✓
- 4Constant cutting force is maintained regardless of the spindle speed
Correct answer
Tool movement stays precisely synchronised with the spindle rotation
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