louboutin københavn 2 a O.f

More than 2 piercing punches into the die-shaped blanking

Selected material, high compressive strength of the punch used CrMoV material. D, lower right hole punch quenching hardness, quenching hardness take HRC52 ~ 56. 3. Four-prism design punch t the part in Figure 1 into 60 nine holes required. Taper, but also red Pina into four prism, therefore,[link widoczny dla zalogowanych], four-prism design must meet three conditions of punch. (1) the system of Kin Chong Wu industrial 1959. No. 1025 will shape the total frequency of 8 character sets paper requirements, (2) four prismatic convex chess must meet requirements of high buildings, f3) four prismatic punch must be demolished, but Fang. Designed according to these three conditions as shown in Figure 10 four-prism punch. A, four prism designed multi-step punch, and to ensure sufficient strength. B, at the bottom with an M5 thread larvae 【used to facilitate the demolition. C, four prism designed punch tip of the plane, the main strip to prevent scratches. D. Four prism part of the punch and die work by interference fit, and the very use of the discharge gap with Taiwan, to maintain sufficient stability of the punch. E punch in the four prism 142. Forming angle for the grinding wheel, 70. Edge for the punch when grinding to adjust the angle of the fixture, 135. Forming the pyramid angle. 4. Side of the edge punch, set away from the block and the guide was off the design z side of the blade is qualified to be processed strip and a jump step distance, for coarse positioning in the design of the side edge of the nominal size is equal to step away from the nominal size, and note on the positive and negative bias. The deviation is generally ± 0.01real. The mold design pilots to now be expected, so the side of the blade is equal to the nominal size of the nominal size of step with 0.05 ~ 0.1ram. Manufacturing variations be negative, the bias generally take 0.01 ~ O. 02ram. The work side end edge punch made the general plane, I mm in punching the material, made with the work of some of the steps, and its side of the blade in Blanking before, leading some countries to enter the die first, to avoid side loading The loss of ring side of the blade hole. The die is 0.8 mm punched material, according to design requirements made into flat side of knife blade side so easy sharpening. Side of the blade attachment and non-circular punch with the same way as fixed by the fixed method of hanging. Determined from the strip from the block is fixed at a distance. 1l vend its structure, such as 6 of the spear. It pinched by cover type A grant of reconnection with the preparation of devices with over Taiwan. Loading resistance, determined from the A grinding surface to match the convex side blade drag Paul O. (2 a O.f, ~ mm gap. Day said, Figure 11 is a fixed distance from the block-progressive die in a common location method, as determined from the block of wear and mold manufacturing, multi-bit level the accumulation of material sent into the bar may still be significant error. Therefore, will remain rough location from the positioning block. In order to improve the positioning accuracy of parts, we use the fixed block away from the rough location based on the increase of horses being sold a guide to correcting strip. In the design, it should be noted, the positioning guide is not sold Taiwan 0.4I scorpionfish m below the thin material, otherwise not reach the purpose of precise positioning, and even broken aperture and strips. conductance is General fixed guide pin head and guide the first two. the mold fixed pilots to positive articles Jing. 'to determine guide pin and the strip being pilot hole gap material to the attention of the elastic deformation, leading off a small positive guide head diameter pilot hole and the gap, the thickness of material Jing. According to guide precision parts are pin and the guide is to double manufacturing space 【0.01 to 0.02 mm. pilots to extend the head a great influence on the length of the feed, if stretched out too much and strip will be guided to the discharge subjects are off the board, removed from the guide strip being sold on to feed, so that the continuous blanking of the mold . According to the workpiece thickness, if the strip thickness t = 2 mm or more, lead is pin extension length is O.6t; If stock is thinner, the general guide is sold out is equal to the length of the strip thickness. In short, the mold design be considered from various aspects, including the structure of the mold, the mold material selection,[link widoczny dla zalogowanych], mold manufacturing process,[link widoczny dla zalogowanych], the mold heat treatment, the level of workers to operate the mold so great influence on the life of the mold. In addition, the adjustment in real leopard dies, as discharge with the rubber pad 10 and the pressure of the spring with a model must be the right design,[link widoczny dla zalogowanych], because they directly affect the life of the mold. work, the first spring is compressed, part stripper plate strip is pressed the case , began to punch down red plant. If there is no certain pre-pressure rubber pad, which is greater than the compression spring pre-pressure rubber pad, then punching process, the strips have not yet pressed the punch has been asked to reach out stripper plate, which will inevitably lead to the small size of the punch to break. Therefore, the rubber pad installed, 20 of the pre-pressure must be maintained. In addition, the height of the spring pressure on both sides must be consistent,[link widoczny dla zalogowanych], so as to ensure smooth and reliable cross with the work, which improve die life. Hengxian total industrial 1989.NO.8 1

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