Cylindrical grinding methods In plunge (infeed) grinding, how are the work and wheel motions arranged and what component length can be produced relative to wheel face width?

Introduction / Context:
External cylindrical grinding is performed either by traverse (longitudinal) grinding or plunge (infeed) grinding. Correct understanding of motion and capacity helps select the right method for part geometry and productivity.

Given Data / Assumptions:

• Cylindrical work is mounted between centers or in a chuck and rotates.
• Grinding wheel feeds radially (in plunge grinding).
• Wheel face width is finite and determines maximum plunge-ground length.

Concept / Approach:
In plunge grinding, the wheel is fed radially into a rotating workpiece without table reciprocation. The wheel face covers the ground length; hence, the part length is typically equal to or less than the wheel face width. For longer parts, traverse grinding with work table reciprocation is used.

Step-by-Step Solution:

Verification / Alternative check:
Process texts classify plunge grinding for steps, shoulders, and short cylindrical surfaces; traverse grinding for longer shafts and journals.

Why Other Options Are Wrong:
Options with reciprocating work describe traverse grinding, not plunge.Producing lengths longer than the wheel face in plunge mode is not feasible without traversing.Non-rotating work would rub and burn; grinding requires relative speed.

Common Pitfalls:
Trying to plunge-grind long journals causes ridging and thermal issues; select traverse grinding or a wider wheel as appropriate.

Final Answer:

Work rotates in a fixed position; produces cylinders equal to or shorter than wheel face width