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我厂过去加工的内螺纹,当公称直径超过200时,通常是设计大型螺纹塞规来解决测量问题的。随着产品的发展,目前我厂使用最大的螺纹塞规已达到M420×6,这种大型的螺纹塞规,不仅测量精度低、体积笨重,而且造价昂贵、使用不便,保管维护也困难。我们参照西德内螺纹百分尺的原理,设计制造了大直径内螺纹百分尺,经过实际使用,效果较好。这种内螺纹测量工具,结构精巧,示值清楚,测量精度较高。测量范围可达200～600毫米(如接长,测量范围可再大),克服了大型螺纹塞规的缺点。量具结构
My factory in the past processing of internal thread, when the nominal diameter of more than 200, it is usually the design of large thread plug gauge to solve the measurement problem. At present, with the development of the products, the largest thread plug gauge used in our factory has reached M420 × 6. This large thread plug gauge not only has low measuring accuracy, bulky bulk, but also is expensive, inconvenient to use and difficult to maintain. We refer to the principle of screw thread in West Germany, designed and manufactured a large diameter internal thread scale, after actual use, the effect is better. This thread measuring tools, compact structure, shows a clear value, high accuracy. Measuring range of up to 200 ~ 600 mm (such as the long, the measurement range can be greater), to overcome the shortcomings of large thread plug gauge. Measuring structure