A, production characteristics of special-shaped
spring?
because today in the rapid development trend of the domestic manufacturing, using special-shaped spring field more and more, the key is because special-shaped spring have prominent characteristics, thus can widely used in various industries, but special-shaped spring I think also have disadvantages:
1, special-shaped spring production and processing, usually without heating blank, also don't like cutting production and processing, a lot of cutting metal, so it not only energy saving, and save the metal;
2, stamping parts of the specifications of the precision by the mold to make sure that have the same characteristics, so the stable quality, good compatibility;
3, in view of the general press can produce dozens per minute, per minute and high speed press can make hundreds of thousands of pieces of production, so it is the efficient way of production and processing;
4, because of the special-shaped spring production and processing, thus can obtain other production processing mode can not or difficult to manufacture, wall thin, light weight, good rigidity, high surface quality, shape, complex parts, with the progress of science and technology, special-shaped spring will also get the two disadvantages of processing;
2, production of special-shaped spring defects of what would happen?
1, because of the pressure core for modalities surface therefore choose to carry out the machining of the guide surface after casting forming, guide production and processing surface and concave die surface match after being clearance error, in the mold all normal operation in the whole process of the core material left/right.
2, pressure core oriented design for 125 mm length, the actual length of 100 mm, although within the scope of the design scheme, but has hold a part of the 110 mm is beyond the reasonable guide 9 mm long, there is pressure is the core in order to not smooth, no the ills of product positioning.
3, special-shaped spring forming height 100 mm, need to design special guide board, can not rely on production and processing side sliding surface and concave die clearance guide, side to increase the friction, self-lubricating actual effect is very poor, strong lateral force is not reasonable to eliminate, after the mass production will cause the guide clearance increases, due to long-term damage to the early loss of mold all normal guide actual effect, thus cause malignant quality accident.
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