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Modular Fixturing System - Tech Articles - Building Modular Setups

 

 

BUILDING MODULAR SETUPS

Using Stevens Setup Components to build a fixture involves the same basic steps that are used to design conventional fixturing. Setups can be designed (1) on CAD, (2) in a setup staging area, or (3) at the machine.
STEP 1 - DETERMINE WORKPIECE LOCATING DATUMS
6 independent locating points required to fully constrain workpiece in x, y, and z. 
On many workpieces, it is convenient to categorize locating points into:

Primary (3 datums defining a plane). 

Secondary (2 datums oriented perpendicularly to primary plane).

Tertiary (1 datum oriented perpendicularly to both primary and secondary location.)

 
STEP 2 - SELECT MODULAR LOCATING COMPONENTS
To eliminate indicating or probing requirements, use the built-in accuracy of the qualified surfaces and bushing locations of Stevens Setup Components.
 
STEP 3 - SELECT CLAMPING COMPONENTS
Clamps should directly oppose locators.  Check for spindle tooling clearances when positioning clamps.
Check for spindle tooling clearances when positioning clamps.

 

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