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目前,全国具有批量生产游标卡尺能力的工厂约有100家,测量范围在300mm和300mm以下的游标卡尺年产量约300万把,其中,材料为碳素钢或工具钢的共占95％以上。在大批量生产卡尺的过程中,尺身头部和尺框的外廊(直接关系到测量爪质量)加工成形,一直是各制造厂生产上的技术关键。这个问题不解决,直接影响产品质量和生产效率的提高。对于游标卡尺的型式、测量爪的尺寸精度和表面粗糙度,GB1214-85有如下规定: 1.卡尺型式测量范围在300mm和
At present, there are about 100 factories that have the ability to produce vernier calipers in China. The annual output of vernier calipers measuring 300mm and 300mm is about 3 million. Among them, the materials are carbon steel or tool steel, accounting for more than 95%. In the mass production of calipers, the head of the scale and the frame of the outer corridor (directly related to the quality of the measuring jaws) forming, has been the technical key to the manufacturing plant. This problem is not solved, a direct impact on product quality and production efficiency. For the type of vernier caliper, measuring the dimensional accuracy and surface roughness of the claw, GB1214-85 has the following provisions: 1. Caliper type measuring range of 300mm and