The following modules can be put together in various combinations to
build up a complete training programme. Modules 1 and 2 are
used for the standard Introduction to Geometrical Tolerancing
course. Modules relating to BS 8888, Geometrical Product
Specification, Moulding/Casting/Forging and Surface Specifications
can also be used to develop training programmes.
If you require training in an area that is not covered by one of the
standard modules, we will be happy to develop one for you.
| Description |
Duration |
Contents |
|
Basic module:
features and features-of-size, datums and
tolerance characteristics |
2 days |
-
what is Geometrical Tolerancing?
-
the benefits of Geometrical Tolerancing
-
features and features-of-size
-
principles
of Dependency & Independency
-
the
elements of Geometrical Tolerancing
- tolerance
frames
- tolerance
features & symbols
- tolerance
frame modifiers
-
positioning
the tolerance frame
-
datums
and datum systems
- what
is a datum?
- datum
features
- datum
planes & axes
- selecting
datums
- showing
datums on drawings
-
theoretically exact
dimensions (TEDs)
-
tolerance
characteristics - what they will and won't control
- location
- orientation
- form
- profile
- run-out
-
choosing
which tolerance to use
|
 |
Maximum Material Principle:
Bonus tolerance,
Virtual Condition, and datum shift. |
1 day |
-
simple clearance fits
-
Worst
case boundaries
-
Virtual
Condition
-
Maximum
Material Principle
- bonus tolerances
- Maximum Material Condition (MMC) with zero
tolerances
- Least
Material Condition (LMC)
- using
MMC with datums and datum shift
- restricted
application of tolerances
- combining
tolerances to control
hole patterns
- standards
- current
BS & ISO standards
- future
developments
|
 |
| Tolerance
Stack Calculations |
1 day |
-
Introduction
-
Revision
of core concepts
- Maximum
Material Principle
- Virtual
Condition
- Bonus
tolerance
- Datum
shift
- What
are tolerance stacks?
- Step-by-step,
the stack calculation process
- specify
the objective
- specify
the conditions
- derive
the vector loop for the stack chain
- complete
the stack table
- tolerance
stacks for components with conventional tolerances
- tolerance
stacks for components with geometrical tolerances
- working
with location tolerances
- working
with orientation tolerances
- working
with form tolerances
- working
with profile tolerances
- working
with run-out tolerances
- taking
account of bonus tolerances (MMC and LMC)
- taking
account of datum shift
- tolerance
stacks for assemblies
- using
the stack table to 'tune' the design
|
 |
Advanced Applications:
datums systems, special applications and
modifiers. |
1 day |
-
Introduction
-
Revision
of core concepts
- Maximum
Material Principle
- Virtual
Condition
- Bonus
tolerance
- Datum
shift
-
Multiple datum systems
-
Common Zone/Seperate Zone modifiers
-
Other modifiers for special applications
- Projected tolerance zones
- Freestate and tolerancing of flexible parts
- Reciprocity requirement
- Compound tolerances
- Default and non-default operators for defining tolerance
characteristics.
- standards
- current
BS & ISO standards
- future
developments
|
 |
3D Annotation:
guidelines, rules and additional
annotation required for fully defining component geometry in 3D |
½ day |
-
Introduction
-
Revision
of core concepts
- Features and features-of-size
- Datum Systems
- Tolerance characteristics
- Guidelines for working in 3D
- 3D annotation elements
- annotation planes
- intersection planes
- orientation planes
- Applying datum markers and datum targets
- Applying tolerance frames
- Median features
- Unilateral and unequal-bilateral tolerance zones
- standards
- current
BS & ISO standards
- future
developments
|
 |
