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Next
Generation Technology
Engineering Design has never been more exciting
and enjoyable. With the introduction of DimXpert ( Dimensional Tolerancing
Expert ) in
SolidWorks, a new
paradigm has arrived. Design Specification for Manufacturing and
Inspection just got easier.
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GD
& T Terminology:
GD&T involves
four simple steps:
- Identify
part surfaces to serve as
origins
and provide specific rules to establish starting point and direction
for measurements
- Convey
nominal (ideal) dimensions
and
orientations from origins to other surfaces
- Establish
boundaries and / or
tolerance
zones for specific attributes of each surface along with specific rules
for conformance
- Allow
dynamic interaction between
tolerances (simulating actual assembly possibilities) where appropriate
to maximize tolerances
Keeping in mind the
Fit, Form and Functional requirements of Design, SolidWorks exploits GD
& T technology in its TolAnalyst module.
DimXpert is used to
dimension a part fully using either the Automatic or Manual
Dimensioning Mode. Variety of options are available to convey
design specifications.
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Allocation of
tolerance can be either using Plus / Minus Options or using Geometric
Dimensioning Symbol call outs according to ASME Y14.41-2003 standard.
For example the part shown below needs to be dimensioned to reflect
functional requirements. The part mates with another part on its
circular flat face (shown), gets located in the pilot bore and then
oriented with the width-type feature of the notch.
Using DimXpert the Primary, Secondary and Tertiary Datum planes are
selected accordingly and Automatically dimensioned with the 'Turned'
and 'Geometric' Options selected.
The dimensions need to be applied for the part thickness, outer
diameter, central bore diameter, pattern of hole diameters, notch width
and depth.
While Plus/ Minus Tolerances are applied on Features of Size involving
thickness, width-type and locational faces, Feature Control Frame is
used for the circular features.
The GD & T schematic layout is done per ASME Y 14.5 (2000)
Standard. The Dimensioned schematic layout created via DimXpert
is shown below. |
Note: The PCD
is not shown since it is a Basic Dimension !!
Under-constrained,
exactly constrained and over-constrained conditions
of a part (with its dimensions laid out) are highlighted as Yellow,
Green and Red respectively. The DimXpert results for the part is
shown below.
DimXpert dimensional
layout forms the basis for Tolerance Analysis using TolAnalyst inside
SolidWorks. The dimensional layout on drawing views can be
directly provided by DimXpert saving on Time and eliminating errors
arising out of dimensional ambiguities.
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Our Mission
Engineering
Development Through Effective Partnership
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Contact: SolidWorks
Reseller Chennai, Coimbatore, India
EGS Computers
India Private Limited
342/ 90 Arcot Road I Floor Kodambakkam
Chennai 600 024
Branch: 1/1 B.R.
Nagar Trichy Road Singanallur Post
(Opp. Coimbatore Stock Exchange) Coimbatore 641 005
Corporate:
+91-44-2480 3370
Corporate fax: +91-44-2484-4227
Coimbatore: +91-422-2310 268 / 2314 653
E-mail: info@egs.co.in
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