Runout Controls

Runout Controls
Alessandro Anzalone, Ph.D.
Hillsborough Community College, Brandon Campus
Runout Controls
Sections:
1. Introduction
2. Circular Runout
3. Total Runout
4. Comparison Between Circular and Total Runout
5. Runout Calculations
6. Summary
7. References
Introduction
Runout is a composite control. A composite control controls the
form, location, and orientation of a part feature simultaneously
(in a single gage reading). Runout controls are often used to control
the coaxiality of diameters. A runout control always requires a
datum axis. There are two types of runout controls: circular runout
and total runout.
A runout control can be applied to any part feature that surrounds,
or is intersected by, the datum axis. A runout tolerance value
specified in a feature control frame indicates the maximum
permissible indicator reading (gage travel) of the considered feature,
when the part is rotated 360° about its datum axis.
Circular Runout
Circular runout is a composite control that affects the form,
orientation, and location of circular elements (individually) of
a part feature relative to a datum axis. A circular runout control
is a geometric tolerance that limits the amount of circular runout of
a part surface. Circular runout applies independently to each
circular element of a diameter. It is referred to as a composite
control because it controls the form, location, and orientation of a
part feature simultaneously (in a single gage reading). Circular
runout is frequently used to control the location of circular
elements of a diameter. When applied to a diameter, it controls the
form (circularity) and location of the diameter to a datum axis.
Circular Runout
Circular Runout
Circular Runout
Circular Runout
Circular Runout
Circular Runout
Circular Runout
Circular Runout
Total Runout
Total runout is a composite control affecting the form,
orientation, and location of all surface elements
(simultaneously) of a diameter (or surface) relative to a datum
axis. A total runout control is a geometric tolerance that limits the
amount of total runout of a surface. It applies to the entire length
of a diameter simultaneously. It is referred to as a composite
control because it affects the form, orientation, and location of a
part feature simultaneously. Total runout is frequently used to
control the location of a diameter. When applied to a diameter, it
controls the form (cylindricity), orientation, and location of the
diameter relative to a datum axis.
Total Runout
Total Runout
Total Runout
Total Runout
Total Runout
Total Runout
Comparison Between Circular and Total Runout
Comparison Between Circular and Total Runout
Runout Calculations
Summary
References
http://www.dimcax.com/gdt_web/march-98.htm
http://www.emachineshop.com/machine-shop/Runout/page607.html
http://www.toolingu.com/definition-350200-36199-total-runout.html
http://www.tec-ease.com/tips/june-97.htm