Rectangular screw thread gauge

Abstract

The invention discloses a rectangular screw thread gauge. The gauge comprises a go-side screw plug gauge, a no-go side screw plug gauge, a go-side thread ring gauge and a no-go side thread ring gauge, wherein a plug gauge go-side body of the go-side screw plug gauge is a spheroidal graphite cast iron circular ring; one end face of the plug gauge go-side body is vertically connected with two symmetrical plug gauge go-side handles; a plug gauge no-go side body of the no-go side screw plug gauge is also a spheroidal graphite cast iron circular ring; one end face of the plug gauge no-go side body is vertically connected with two symmetrical plug gauge no-go side handles; a ring gauge go-side body of the go-side thread ring gauge and a ring gauge no-go side body are spheroidal graphite cast iron circular rings; the outer circumferential surface of the ring gauge go-side body is vertically connected with two symmetrical ring gauge go-side handles; and the outer circumferential surface of the ring gauge no-go side body is vertically connected with two symmetrical ring gauge no-go side handles. The gauge has the advantages of reducing processing and manufacturing processes, lowering production and manufacturing costs, ensuring product quality and increasing labor productivity.

Description

technical field [0001] The invention relates to a measuring tool, in particular to a rectangular thread gauge, which is mainly used for inspection and acceptance of product parts with relatively large diameters. Background technique [0002] According to the general technical requirements of national gauges, measuring tools made of high-quality low-carbon structural steel (No. 10, 15, and No. etc.) manufacturing. The above two types must go through the heat treatment process, that is, quenching and tempering, to meet the performance requirements of the measuring tool, that is, high hardness, high wear resistance, and high dimensional stability. In addition, good grinding processability is required so that the measuring tool can achieve a high finish. All heat-treated, welded or cast gauges shall undergo aging treatment. For gauges with larger dimensions and higher precision, they must also be treated with ice. Existing standard gauges not only have complicated processing...

AI Technical Summary

Problems solved by technology

Existing standard gauges are not only complicated in processing technology, high in manufacturing cost, but also limited in scope of application, and cannot be used to inspect parts with threaded structures with a diameter greater than 200mm (thread profile triangle, trapezoid, rectangle, etc.)

If non-standard threaded gauges are manufactured according to the general technical conditions of national gauges, it is not only difficult to manufacture, but also the production cost is high. Therefore, there is no such special threaded (rectangular) gauges for sale on the market.

Images