译文题目： Fixture design method 夹具设计方法 Fixture design methodThe modern market is a key to meet the consumer demand diversity.In order to effectively respond to the requirements, the manufacturer to determine their manufacturing has sufficiently flexible to meet the needs of their rapid production development.Fixture design, it is to point to use install clamp workpiece fixture in the manufacturing process, so that they can be processed into meet the design specifications of the products, is beneficial to improve manufacturing flexibility is an important factor.To make flexible fixture, there has been a considerable research effort is keen to use computer aided fixture design (CAFD) aided fixture design tools and methods development.This paper includes discussions of these research efforts.More than seventy-five CAFD tools and techniques in fixture design are discussed and introduced a computer aided and on the basis of the technology.Discuss the main conclusion is that when has been significant progress in auxiliary fixture design, mainly have two research issues need further efforts.First, now CAFD research in essence is divided, and associated fixture design before and after the need to provide more support.Second, more focused on a fixture structure of detailed design.Manufacturing enterprises the main concern is the development of design and production of a variety of high quality products in a short time range.A new products before competitors enter the market quickly, is a can protect and increase market takes up the forehead and higher profits of the decisive factors.Due to the diversity of consumer desire, has already caused the manufacturers need to develop flexible manufacturing requirements, now the production of the products is the mass production of product development to achieve a rapid turnaround.Some factors to achieve flexible manufacturing ability of organization, one of them, during the period of production, in which a workpiece fixture used for after the mechanism of production operation into products by individual parts of the assembly.Fixture during production to safely, quickly and accurately locate the workpiece, the machine manufacturing meet the design specification.In the modern manufacturing accuracy to promote many different products features usually part to achieve common parts interchangeability.The cost of the jig for manufacturing 10-20% of their total cost of the system.These costs include not only the fixture products, assembly, operation, and also including their design.So in order to reduce the jig and the design cost, there are two kinds of methods have been adopted to achieve this goal.One is focused on the development of flexible fixture system, for example, using new materials properly clamping workpiece and development business module fixture system.Flexible fixture standard is important, however, it didn't handle the difficulty of fixture design.To solve this problem, the second single research method is the development of fixture design program of computer auxiliary fixture design (CAFD) system, it is being discussed in the literature of the research methods.Have a support in machine tool clamping workpiece clamping device is a workpiece properly fixed in the concrete example.Bolt during processing, so support specific artifacts, clamping clip fixed workpiece position.Positioning system has its own auxiliary units and contact the workpiece locator.A bolt positioning components, - auxiliary unit and a contact artifacts, and produce a position power to prevent the bolt is loose.Manufacturing such typical fixture design process has four stages: equipment design, fixture design, component design, and confirmation.Planning and machining information, the device for the number of each device analysis decision mechanism, complete all necessary processing operation and proper positioning base.Artifacts of manual operation on behalf of the combination of a set of process can be performed without changing positions or locate an operation.To produce each equipped with a clamp fixture planning unit design, and the phase of operational qualification.In the fixture planning, including set meet the requirements of fixture and the layout of the generated, it represents the first step in the solution to these requirements.This layout plan will be set up and the details of the fixture locating and clamping device surface contact, and on the surface of the positioning and clamping point location.Anchor point number and position, must make the six degrees of freedom in the process of workpiece machining has enough constraints.There are all kinds of convenient conceptual anchor point layout, produce the right components to design (that is, the positioning and clamping device) and a fixture in the validation phase test, then to ensure that it can satisfy the demands of fixture design process.Before because they produce and components design, 。