A fixture is a device that locates and holds parts during machining or assembly. A modular fixture employs reusable components on a regular lattice. Given a part, machinists combine intuition with trial-and-error to design an appropriate fixture. When a machinist is unable to find a design, it may be the case that (1) a feasible design was overlooked or (2) no feasible design exists. Complete a...

This paper addresses two major issues in fixture layout design: (1) to determine the feasible fixture configurations that satisfy fundamental requirements such as kinematic localization and total fixturing (formclosure) and (2) to evaluate the acceptable fixture designs on several quality criteria and select the optimal fixture appropriate with practical demands. The performance objectives cons...

This proposed method has to design and fabricate the Multipurpose Jig and Fixture, for that component which has been to reduce the manufacturing cycle time. When the component produced on a small size previously this is to produces the large quantities of requirements. The selective components requires for machining operations such as step milling, angle milling & boring and reaming. The few op...

This paper presents a method to design fixtures for complex objects in robotized environments. The object is described with a set of points on its surface. First, an initial formclosure fixture is found with an iterative algorithm. The initial fixture is then improved with an iterative approach relying on a geometrical reasoning that efficiently looks for a locally optimum fixture; the quality ...

Due to rapid changes in recent market demands, shortened production ramp-up/launch and model changeover of new products with simultaneous manufacturing of family of products on a single production line is becoming inevitable. This requires systematic methods for rapid design and analysis of reconfigurable fixture workspace synthesis and visibility. This paper presents an integrated approach for...

Fixture design is critical to the development of a mesoscale machining system capable of yielding micro-size features with high accuracies. A reconfigurable, intelligent fixturing system with embedded sensors is required (i) to fixture a large group of similar workpieces with minimal set-up changes, (ii) to sense the location of the workpieces placed on the fixture, (iii) monitor clamping force...

Finite element (FE) analysis is very useful in the early stage of a fixture development in order to reduce or eliminate design problems. Accurate prediction of fixture-workpiece deformation requires an appropriate representation of the contact relationship between fixture elements and workpieces. The paper addresses the special features of the deformation analysis between complicatedly shaped c...