To improve the overall efficiency of the spiral swing cylinder, it is mainly to improve the transmission efficiency ηm1 of the screw pair and the internal leakage volume efficiency ηV2. Improving the transmission efficiency of the spiral pair ηm1 starts from the following two aspects: The first is to reasonably choose the material of the spiral pair. Spiral rods and spiral mothers are usually made of different materials to obtain a lower coefficient of friction. Spiral rods are generally made of medium carbon steel or alloy steel, such as 45 # steel when the accuracy is not high; 65Mn, etc. for high accuracy; T8A, T10A, or CrMn are generally used for small and medium load screws of precision instruments. The spiral mother is made of tin bronze or wear-resistant cast iron. When the accuracy is not high, wear-resistant cast iron or nylon is used; when the accuracy is high, tin bronze is used more, such as ZQSn6-6-3, ZQSn10-1; or cast brass; Or cast a layer of bronze or bearing alloy on steel or cast iron. The second is the use of ball screw pair, its efficiency can reach 94% to 98%. The above is the method to improve the efficiency of the spiral swing oil cylinder, I hope to help everyone.
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