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The interference check of the positioning fixture
Fixture designed to ensure that all parts can be machined and assembled, and to realize their positioning, fixture interference detection. Interference is generally divided into static
interference and dynamic interference. Static interference refers to the fixture design is completed, under resting conditions, the workpiece there is no external driving force, and between
the fixture and workpiece between the fixture and each unit within the existing interference; dynamic interference refers to the completion of the fixture design analysis of the interference
between the various components in the simulation of the assembly process.
2.1 static interference analysis
Static interference analysis including the interference between the interference and fixtures, and workpiece fixture units. Each set of fixture has a set of modules, including the completion
of the positioning and clamping effect. Because space is limited and the unit structure is more complex, and fixture design is generally layer design, it is difficult to control the space
margin, and prone to interference. In addition, the complex shape of the workpiece, the reasons for the location or structure of the fixture unit may cause the workpiece can not be properly
installed.
CATIAV5 the "DMUSpaceAnalysis" module under the fixture static interference analysis, the use of collision detection the "CheckClash" profile tool "SectioningDefinition," the prosecution
side of the fixture, the results shown in Figure 3, the fixture internally between each unit and fixtures with no static interference between the workpiece.
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