Forming Process And Mold Design Of Fine-blanking For The Reverse-gear Selector Fork Of Automobile

The development direction of modern manufacturing industries is standardizeddigital manufacturing, automation, high precision and high efficiency. Thetraditional design and manufacture can’t satisfy the product development needs,backward processing technology and production patterns can be difficult to adapt tochanges of the market. Adopting advanced technology, precision machining,digitization, automation and so on, and has become the inevitable trend of modernindustry for the future development.Fine Blanking technology researched in this article, is a kind of advanced metalpressure processing method, is high precision, high efficiency, high quality, lowenergy consumption, high added-value processing in the modern manufacturing.Fine blanking technology has become an important forming technology, can get highprecision,100%clean cut ratio of a surface, interchangeability, high quality parts,and reduces grinding, machining, and so on. And fine blanking technologysignificantly reduces costs, increases productivity. Fine Blanking processes for theautomobile industry reduce production costs; improve vehicle performance,increased efficiency important means of income. Fine Blanking materialsthemselves are important means to achieve lightweight automobile achieved thepurpose of vehicle energy saving and emission reduction.In this paper, the selected transmission Reverse-gear selector fork fine-blankingparts is used for technology research, design the two process program, the traditional process scheme and advanced process scheme. According to the traditional processscheme, this paper design and manufacture four sets of molds for the fine blankingcompound moulds, chamfered mould, bended mould, trimming mould. In advancedtechnology, design fine blanking progressive compound tools. Progressive mold hasa high degree of automation, high production efficiency and high technical content.For mass production, progressive mould can highlight more its advantages andeconomic benefits.Mold is the core of the products. Mold design and manufacture have a directimpact on the quality of the products. This paper introduces detailedly thefine-blanking mold design process, including the center of pressure and each forcecalculation, the strip layout, the number and arrangement of the pressure pin andejector pin, die clearance and the edge size of punch and die. Draw the moldassembly diagram and the various component parts diagram. Determine the partsassembly relationships and tolerance. Introduced the main components of the mouldand the parameter design, including the guide plate, alignment pin, the detachingpins, etc.; At last, the paper introduces the fine blanking mold manufacturing,mouldmaterial, special fine-blanking machines and the special processing andmanufacturing equipment for fine-blanking mold, etc. Fine-blanking mold design ismore complex, with higher cost, longer manufacturing cycle and expensivemanufacturing equipment. Fine-blanking parts is suitable for mass production inorder to highlight its economic benefits. This article simply introduces the key pointsof the chamfered mold, bended mold and trimming mold design; Determine the dieclearance, corner radii, and other important parameters; And to draw the moldassembly diagram and parts diagrams.In this paper, the four set mold were not only manufactured and assembly butalso investigated experimentally on the press machine. Record the experimentalresults, analyses the experimental data, obtain the production qualified parts ofmachine tools, process and mold design parameters, analyses the potential failuremodes and results of parts. Summary of the experimental data and the accumulation of production experience have important theoretical and practical significance forthe future development of the design of new products. To produce good parts, realizethe fine-blanking parts localization, reduce production costs, thereby reducing thecost of the vehicle is of great practical significance to the real production.In this article, chamfered, bending and fine-blanking process step werecombined to design the fine-blanking progressive mold. The Fine-blankingprogressive mold design process, the main components of the design and moldstructure design were introduced in this paper. Draw the diagram of the moldassembly and various component parts drawing.Fine to the continuous, automation,high efficiency, high precision direction, will be to reality the production withtheoretical guidance.Fine Blanking Technology has good development prospects. China shoulddevelop fine blanking technology by improving process, improving mold design andmanufacturing, training fine blanking technical personnel. This preliminary researchfor fine blanking technology will be of generate high application value in theproduction.