The ____ grinder provides more precise X- and Y-axis movements than a vertical milling machine for extremely accurate positioning.
A) spindle
B) jig
C) cutter
D) cylindrical

Question

Quizplus · Accepted Answer

The term "jig grinder" refers to a machine tool used to grind complex shapes and holes where the highest degrees of accuracy and finish are required. The machine operates by a high-speed air spindle rotating a grinding bit. The air spindles are removable and interchangeable to achieve varying surface speeds. Jig grinders are used to grind complex shapes and holes to precise tolerances with high levels of accuracy measured in micrometers (tenths of a thousands of an inch) and surface finishes (Ra) below 1 μm.

The ____ Grinder Provides More Precise X- and Y-Axis Movements