Why are fixtures important?

Accurate & Repeatable geometric assessment

Whether measurement is performed by laser scanner, co-ordinate measuring machine or dial test indicator, a consistent means of securely locating the part to be measured enables geometry to be accurately and repeatably assessed.

Independent physical verification to CAD data

The fixture can help independently resolve issues between departments and/or companies by confirming, either visually or through quantitative measurement, whether or not the part conforms to the CAD data.

Functional assessment

Fixturing is not simply confined to geometrical assessment. Dynamic assessment of operations can be performed (e.g. opening and closing of a glove box) and issues such as poor damping and latching, and physical clashes can be identified.

Interface assessment

Through the use of simulators and form bars, visual assessments (often end-of-line) of potential gap and flush conditions with interfacing components can be made.

Simulation of operating environment

In addition to functional and interface assessment, the realistic operation of the part can be further simulated through the attachment of multiple components in a functional environment (e.g. combining IP, door casing and B-pillar with the ability to open and close the door)!

Issue identification and resolution

Through visual and dimensional assessment, issues can be identified and resolved in-house, rather than shipping the part and waiting to hear whether it fitted the vehicle or not.

Statistical Process Control (SPC)

Because of the consistent and repeatable nature of a high quality, purpose made holding fixture, SPC can be performed for a number of parts and measurements, as variables associated with the locating and measuring of the part are minimised.

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