Grinding Wheel Geometry 220

Abrasives Training

Class Information

Tooling U classes are offered at the beginner, intermediate, and advanced levels. The typical class consists of 12 to 25 lessons and typically requires at least two hours of instruction time.

Class Name:	Grinding Wheel Geometry 220
Description:	This class describes the major types of grinding wheels listed in the ANSI standard and explains the relationship between wheel geometry and workpiece shape.
Prerequisites:	250110 250120
Difficulty:	Intermediate
Number of Lessons:	19

Class Outline

Objectives
The Importance of Wheel Geometry
ANSI Standard
Major Wheel Categories
Key Grinding Surfaces
Wheel Differences
Wheel Dimensions
Letter Designations
Numbered Wheel Types
Type 1: Straight Wheels
Type 2: Cylinder Wheels
Type 5: Recessed One-Side Wheels
Type 6: Straight Cup Wheels
Type 7: Double-Recessed Wheels
Type 11: Flaring Cup Wheels
Type 12: Dish Wheels
Type 13: Saucer Wheels
Wheel Profiles
Summary

Class Objectives

Understand the factors that determine wheel shape.
Describe the benefits of grinding wheel standards.
Identify the most common groups of grinding wheel shapes.
Describe how wheels are classified with regard to their grinding surface.
Describe the purpose of different wheel features.
Identify common dimensions for grinding wheels.
Describe the process for communicating grinding wheel dimensions.
Describe the process for communicating grinding wheel types.
Recognize the key features of a Type 1 straight wheel.
Recognize the key features of a Type 2 cylinder wheel.
Recognize the key features of a Type 5 recessed one-side wheel.
Recognize the key features of a Type 6 straight cup wheel.
Recognize the key features of a Type 7 double-recessed wheel.
Recognize the key features of a Type 11 flaring cup wheel.
Recognize the key features of a Type 12 dish wheel.
Recognize the key features of a Type 13 saucer wheel.
Name common wheel types that often receive special profiles.

Class Vocabulary
American National Standards Institute		A non-profit organization that works to standardize many aspects of the business marketplace.
contour grinding		A type of grinding operation in which the wheel follows a machine-generated contour path. It may involve wheel crossfeed, which may round both the corners of the part and the edge of the wheel.
cup wheel		A grinding wheel that is shaped like a cup or a bowl. A cup wheel may have sides that are either straight, known as Type 6, or flaring, known as Type 11.
depth		The top-to-bottom measurement of a recess or relief.
diameter		The distance from edge to edge of the widest point of a circle.
dimension		A measurement of space, especially length, width and height.
face		In grinding, the part of the wheel that contacts the workpiece.
flange		A flat or raised metal disk that helps deflect mounting stresses from the wheel's hole.
flat		The bottom of a recess or the horizontal area that lies between the relief edge and the wheel edge.
geometry		The measurement and properties of the lines and points of an object that make up its shape.
peripheral wheel		A grinding wheel that has its grinding surface, or face, on its periphery.
periphery		The outermost portion or edge.
profile		A specialized edge that is added to the face of a wheel to help it conform to a particular grinding operation or part shape.
radius		The distance from the center to the edge of a circle.
recess		An indentation or a hollow area.
relief		A gradual, angular impression.
side wheel		A grinding wheel that has its grinding surface, or face, on its side.
snagging		A rough grinding operation intended to remove material with little regard to surface finish.
straight wheel		A grinding wheel with parallel sides, a 90-degree face, and no recesses or relieved areas. Known as a Type 1 wheel.
stud		A projection from one part that matches a hole in another part intended to aid in attaching or mounting one part to another.
thickness		The top-to-bottom measurement of a wheel or a hole.
width		The measurement or size of the grinding edge.