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A System for Automated Fixture Planning with Modular Fixtures

A System for Automated Fixture Planning with Modular Fixtures

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32<br />

When a cutting <strong>for</strong>ce OT clamping <strong>for</strong>ce is direct& toward the region that cannot be supported at all by<br />

future companents, part deflection may be unacceptable. Figure 3-12 shows some cases where part<br />

deflection due to cutring or clamping <strong>for</strong>ce is difficult to prevent <strong>with</strong> modular future components. When<br />

a candidate setup is suggested, a human expert may detect such part defleXion by investigating part<br />

gemeuy and cuuing <strong>for</strong>ces be<strong>for</strong>e generating fixture plans.<br />

3.6. Summary<br />

1<br />

cuaing <strong>for</strong>ce or<br />

clampi <strong>for</strong>ce<br />

cutting <strong>for</strong>ce<br />

Figure $12: part gmeaies that are likely to defkt due to cutting <strong>for</strong>ce<br />

wheo the magniaadc of the. cming <strong>for</strong>ce is large<br />

In this chapter, variws analytical tools have been presented to automaticauy check fiMuring<br />

requirements. While interference checking and pan rotation checking due to clamping can be done rather<br />

precisely, a comptation of the clamping <strong>for</strong>oe and pal deflection checking need to be done conservatively<br />

because it is not possible to establish accurate models <strong>for</strong> the analysis. When imqmmed into a sysrem<br />

that gematm fixlure plans, these tools can be uswf to automatically identify valid fim p h <strong>with</strong> either<br />

clamp or a vise.

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