Machining device for inner molded surfaces of integral spinning hemisphere-like shells

Abstract

The invention relates to the technical field of precision machining of inner molded surfaces of integral spinning-formed hemisphere-like shells, in particular to a machining device for inner molded surfaces of integral spinning hemisphere-like shells. The machining device comprises a flexible supporting mechanism, a vice clamping and shape correcting mechanism, an upper pressing plate assembly anda bottom pressing plate assembly; the flexible supporting mechanism comprises a tool base; a groove used for containing the hemisphere-like shell is formed in the tool base in a concave mode; the vice clamping and shape correcting mechanism comprises a plurality of clamping and shape correcting assemblies; the upper pressing plate assembly comprises a plurality of upper pressing plate units; allthe upper pressing plate units and the clamping and shape correcting assemblies are distributed around the end surface of the tool base in a staggered mode in the circumferential direction; the bottompressing plate assembly comprises a vertical base in the center of the bottom of the groove; and a bottom pressing plate is installed on the vertical base in a threaded mode. According to the machining device, end sockets of the hemisphere-like shells are integrally and accurately positioned and clamped, inner molded surface machining is finally completed, the hemisphere-like shell end socket machining efficiency is improved, and integral batch manufacturing of the end sockets of the hemisphere-like shells is achieved.

Description

technical field [0001] The invention relates to the technical field of precision machining of the inner profile of a hemispherical shell formed by integral spinning, in particular to a machining device for the inner profile of an integral spinning hemispherical shell. Background technique [0002] The hemispherical shell refers to the profile whose generatrix equation is a circle, ellipse or other circle-like curve rotating around the central axis. At present, the integral spinning-formed hemispherical shell head is widely used in pressure vessels, aerospace and other fields, and has significant advantages. Especially in the field of aerospace, the heads of medium and large-diameter hemispherical shells are usually manufactured by the method of separate forming of parts and then integral tailor welding, which has many welding seams, many intermediate processing steps, long process, low overall manufacturing efficiency, and lack of Interchangeability and other issues. The h...

AI Technical Summary

Problems solved by technology

[0004] In the existing clamping and positioning method of the integral spinning bottom blank, the integral spinning bottom blank and the fixture cannot be completely fitted, and the position will shake during the processing of the inner surface, resulting in large processing errors. High, the accuracy of the overall positioning and clamping of the hemispherical shell head is low, and the efficiency and product qualification rate of the overall batch manufacturing of the hemispherical shell head are low

[0005] The open application number is CN201720353149.7, a multi-lobed hemispherical protective cover processing inner spherical fixture, which includes a fixture chassis, a mold valve and a clamping block. The upper part of the fixture chassis is provided with multiple mold valves, and the top of the mold valve is installed There is a clamping block, which can completely fit the blank and the fixture, but it cannot be calibrated and the blank can not be leveled, resulting in high machining errors and low machining accuracy.

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