Thread grinding — recommended work (job) speed Typical workpiece peripheral speed selected for thread grinding operations is in the range of:

Introduction / Context:Thread grinding requires accurate lead control and crest-root definition. Because the form must be generated precisely by the wheel, job (workpiece) speed is kept low to maintain profile fidelity and minimize dynamic errors.

Given Data / Assumptions:

• Cylindrical thread grinding with a single- or multi-rib form wheel.
• High wheel speeds; careful synchronization for lead.
• Goal is accuracy and fine finish, not stock removal rate.

Concept / Approach:Lower work peripheral speeds reduce chatter risk and thermal distortion while allowing finer control of the helical path relative to wheel form. Typical practice limits work speed to only a few metres per minute, while the grinding wheel runs at very high surface speeds.

Step-by-Step Solution:Recognize the need for positional accuracy → choose conservative work speed.Typical data tables specify work speeds approximately 1–3 m/min for thread grinding.Therefore, select 1 to 3 m/min.

Verification / Alternative check:Machine builders’ charts and shop handbooks list low work speeds for thread grinding compared with plain cylindrical grinding, which often allows higher job speeds.

Why Other Options Are Wrong:Speeds above ~5 m/min increase risk of profile errors and chatter; 10–20 m/min are more typical of other grinding operations, not precision thread grinding.

Common Pitfalls:Confusing wheel speed (very high) with workpiece speed (low); mixing recommendations for traverse cylindrical grinding with form grinding of threads.

Final Answer:1 to 3 m/min