Manufacturing and assembly processes often require objects to be held in such a way that they can resist all external wrenches. The problem of " xture planning" is to compute, for a given object and a set of xturing elements, the set of placements of the xturing elements that constrain all nite and in nitesimal motions of the object (due to applied wrenches). As xturing problems occur frequentl...

Using computer-aided modular fixture (CAMF) system to fixture configuration and assembly could save time and be efficient. The MF element library (MFEL) was generally connected with a certain special CAD system, so data exchange should be carried out if different CAD platforms shared it. The MF graphics were divided into many elements, then CSG-based method was used to draw the MF graphics, bas...

Damage to adjacent teeth is one of the various complications that may occur during implant placement and is often the result of improper direction during fixture placement or excessive depth of placement. In general, if detrimental symptoms, such as reaction to percussion in damaged teeth, mobility, and pulp necrosis, are not present, osseointegration should be observed at follow-up. In three c...

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In assembly process control and design optimization, it is critical to establish a mathematical model that describes the relationship between the dimensional quality of the final product and the various process parameters (e.g., the fixture layout and locator position deviation). This article presents a surrogate modeling methodology for multistage assembly processes to characterize the relatio...

This paper presents a new test fixture with associated deembedding procedure for effecient and accurate on-wafer device measurements at microwave frequencies. The fixture is based on a substrate shield and (i) provides an accurate common ground for N-port measurements, (ii) effectively reduces substrate carried coupling, (iii) gives well-defined parasitics for simplified de-embedding, and (iv) ...