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userpvmo
Wysłany: Wto 0:45, 24 Maj 2011
Temat postu: mulberry københavn
Mosaic-type design method of stamping die
Partners with foreign car manufacturers in the joint venture company usually holds 50% of the shares. This is the Nissan way of foreign companies to enter China's booming auto market price. Nissan chief executive, said the foreign car manufacturers to provide technology and expertise for the joint venture with China In contrast ratio, the current Chinese partner, in addition to their low-cost labor and sales channels, the actual contribution of the operation and management is almost zero. This structure will not change in the short term, but will not be long-term maintenance, Ghosn said. He believes that Chinese partners must begin to add value for the joint venture. Set to test the hearts of the heart to be in the planes together when the hole cutting assembly over the high parts, blocks away from the red and sometimes seek to fight or to consider 7 Figure NO. 1 / 2 Total 34/35 of 4. When blanking contour to contour lines and curves intersect, the mosaic is generally taken in the edge profile of the straight line, and should be a straight line from the intersection of curves and 3 ~ 5mm, as shown in Figure 5. Blanking can also be based on the size, characteristics curves and straight lines connecting (tangent, intersection of different) will be put together click on the node (the node adjacent elements of a profile that is the intersection, cut point, with characteristic points on the contour ), and in Figure 10. Split plane perpendicular to the direction to draw a straight line edge profile. 5. When blanking blanking time is long and narrow, flattened face contour length in the direction to take, the merging point of taking the most cutting edge contour length of the outer points, but there must be key or locking to prevent the relative insert move, as shown in Figure 4. If the symmetry axis blanking parts, can also be put together to take in the symmetry plane line. 6. When blanking axisymmetric parts, the pieces should be split along the radial, and combined points to take the designer deems appropriate nodes on the edge profile, and combined surface drawn along the radial direction, as shown in Figure 6. Mosaic-type convex and concave mold block location (ie merging point) the choice of processing technology of the major considerations, fixed the reliability of the detection accuracy of pieces and ease of maintenance and so on. Therefore, the mosaic block should be simple and reasonable structure, strength and rigidity to meet the needs. More than a few instances,
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, far from representative of the ever-changing size and shape of blanking. Schematic examples are given die, the mosaic surface of the edge contours are also drawn outside entities. For the punch, put together site selection and die different. The surface of the punch pieces put together to outline the direction of drawing the internal entity,
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, so the merging point of the location and direction of surface flattening should refer to the above principles and methods and in accordance with the specific contours of the punch size and shape to determine, in this non- them here. Four Die Conclusion mosaic-type design,
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, most are accumulated experience. In this paper, the production of the mosaic type used in practice to analyze and study Die on production practices and methods used to summarize the experience, induction, based on the convex and concave mold and the site selection put together put together the drawing surface to the normative direction of division and certain limitations. But not all-inclusive. In actual production, since blanking the shape, size, precision, material thickness and the different production environments, there are other pieces by more mature approach is adopted. Specific pieces by using that kind of approach should be based on a comprehensive analysis of the specific circumstances identified. References 1 Li Zhigang, Xiao Xiangzhi. Pieces die automatic segmentation method. Forging Technology, 1990, (5) 27-312 Chen Yansi,
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, GUO Jing instrument. Stamping die design and manufacturing technology, Beijing Publishing House, 1991.4.3 Wang Xiaopei. Stamping manual. Machinery Industry Press, 1990.11.4 Zhong Yubin stamping process and die design. Machinery Industry Press, 2000.5.5 MA Zheng-yuan,
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, Han Kai. Stamping process and die design. Machinery Industry Press, 2000.8. Figure 10 discharge machine tool market prospects as metal products, semi-finished products into the ultra-precision machining, discharge machine is even more important role, as the industry indispensable to the small and medium sized metal processing metal processing equipment. In recent years, the international discharge machine features continuous innovation, towards precision, automation products used in the processing of small metal parts, more effort, for example, semi-finished products can be used in all types of metal processing speed wire cutting machine and walking areas Siqie made significant progress. Thailand, Indonesia, Malaysia and other countries on a variety of metals and semi-finished products in great demand, low labor costs in these areas, various types of factories in large quantities, considerable demand for the discharge machine. Southeast Asian market demand for the discharge machine, manufacturers should continue to strengthen the research and development, improve machine performance, particularly in the precision and durability to work harder and strengthen after-sales service. In addition, use of computers to control the discharge machine. The direction is one of the joint efforts worthwhile.
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