Forging process and tool of dynamometer annulus

Abstract

The invention discloses forging process and tool of a dynamometer annulus and relates to a free forging process, aiming at ensuring that the fiber direction of the internal organization of the dynamometer annulus is consistent with the forced direction of the annulus during working and fiber flows are not cut off so as to improve the force property of the annulus and guarantee the working precision and the long-term stability of the dynamometer. The forging process flow comprises the following steps of: blanking; heating; forging into a flat square shape and pulling out the tail part; heating for a second time; chamfering and punching into an annular body; upsetting; heating for a third time; chambering and pressing into a long round shape; necking and trimming the punched hole to form a required appearance and size; and cooling and annealing. The tool comprises a round drain cap, a flat drain cap and a flat punch. The invention is used for forging and processing the dynamometer annulus.

Description

technical field [0001] The invention relates to a free forging forging process and forging process equipment of a forging piece, in particular to a forging process of a dynamometer ring body and its tooling. Background technique [0002] The force measuring instrument is used for the verification and calibration of force measuring instruments such as material testing machines and presses, and is also used for the force value measurement of other equipment and parts. High precision and good stability are required, and there are strict requirements for the relative error of the repeatability of the indication value, the long-term stability of the indication value, the relative error of the indication value entering and returning, and the sensitivity. The blank of the current dynamometer ring body is processed by the cutting method. The shape and inner hole of the ring body are processed by gas cutting or mechanical cutting, and then finished. The disadvantages of this method a...

AI Technical Summary

Problems solved by technology

The blank of the ring body of the current dynamometer is processed by cutting method, and the shape and inner hole of the ring body are processed by gas cutting or mechanical cutting, and then finished. The disadvantages of this method are: 1. The fiber tissue inside the blank is cut off, The fiber flow direction of the internal tissue is inconsistent with the force direction of the ring body, and the force condition is not good, which significantly reduces the mechanical properties, resulting in low precision of the dynamometer and poor long-term stability; 2. The material has a large amount of cutting, low utilization rate, serious waste, and processing Long working hours, increased manufacturing costs, poor economy

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