Cone bit palm axis R-groove axial position measuring instrument for oil

Abstract

The invention relates to a cone bit palm axis R-groove axial position measuring instrument for oil, which comprises a detecting head body, a retaining plate, and a dial indicator. The detecting head body is provided with a groove matched with a plane spiral bar of the retaining plate; the basal body and the retaining plate can rotate relatively, the three detecting heads protrude out of the basal body, the dial indicator is clamped on a rotary arm which can not have an axial swarm on a rotary arm shaft, and the axial swarm of the rotary arm is zero, but the rotary arm is not dead lock and can rotate to any position to be measured. The distance between a reference surface on the basal body and the detecting head center is in accordance with a distance nominal value between a measured component thrust face and an R groove. Three plane spiral bars on the retaining plate are triple plane threads which formed an angle of 120 degrees with each other, and the retaining plate only rotates within a range less than 120 degrees. The invention has the beneficial effects of improving qualification rate of components, simplifying assembly processing, simultaneously measuring the height of a small axis of the palm axis, obtaining geometric dimensions of multiple positions by only one-time measurement, and simplifying the detecting procedures of components.

Description

technical field [0001] The invention relates to a special instrument for measuring the axial position of the R groove of the tooth palm shaft of the oil-used roller cone bit, in particular to a measuring instrument for the axial position of the R groove of the tooth palm shaft of the oil-used roller cone bit. Background technique [0002] The roller cone bit used in oil drilling and other mining drilling is used as a steel ball for locking the axial positioning position of the cone and the palm shaft. Its runway is similar to that of ordinary rolling bearings. It is generally called R groove. Its axial The accuracy of the position is an important technical parameter of the bearing part of the roller cone bit. Its accuracy is directly related to the sealing effect of the bearing of the roller cone bit. Strictly speaking, it should be the axial position from the thrust surface, which determines the thrust Whether the surface can be tightly attached, and there is an axial momen...

AI Technical Summary

Problems solved by technology

The sealing effect is not good or invalid, and the drilling fluid carries impurities such as cuttings into the bearing cavity, the bearing wears out quickly, the roller cone bit is scrapped, and even downhole accidents occur

At present, conventional measuring instruments cannot accurately measure the axial position of the R groove of the palm shaft. In the industry, a measuring instrument that solves this problem is needed.

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