Machining device for outer profile of integral spinning type hemispherical shell

Abstract

The invention relates to the technical field of precision machining of integral spinning forming type hemispherical shell outer profiles, in particular to a machining device for an outer profile of anintegral spinning type hemispherical shell. The machining device comprises a positioning seat, an adjusting and correcting mechanism and a pressing mechanism, the positioning seat comprises a positioning tire body, a middle vertical seat and a welding base, the pressing mechanism comprises a top pressing assembly and an outer pressing assembly, the adjusting and correcting mechanism comprises a radial adjusting mechanism and a clamping and correcting mechanism, the top pressing assembly comprises a top pressing plate and a vertical bolt, the outer pressing assembly comprises an outer pressingpart, the radial adjusting mechanism comprises a plurality of inner supporting tire bodies and a plurality of adjusting lead screws, and the clamping and correcting mechanism comprises a plurality ofvice clamping and correcting assemblies and a plurality of screw leveling assemblies. Efficient and stable clamping of an overall spinning type hemispherical shell product is achieved, the product machining quality and the machining precision stability are guaranteed, radial shape correction of the product is realized, and inner molded surface positioning and tire sticking of the product are ensured.

Description

technical field [0001] The invention relates to the technical field of precision machining of the outer profile of a hemispherical shell formed by integral spinning, in particular to a machining device for the outer profile of an integral spinning hemispherical shell. Background technique [0002] 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 head of the medium and large diameter hemispherical shell adopts the overall manufacturing process improvement plan of integral spinning forming and machini...

AI Technical Summary

Problems solved by technology

[0004] In the existing clamping and positioning method of the integral spinning bottom blank, the position will shake during the processing, resulting in a high rate of processing defective products, and the overall positioning and clamping accuracy of the hemispherical shell head is low , then the machining efficiency of hemispherical shell heads is low, and the efficiency and product qualification rate of the overall batch manufacturing of hemispherical shell heads are low

[0005] The open application number is CN201720352717.1 A multi-lobed hemispherical protective cover processing outer spherical fixture, which includes a fixture bottom plate, a mold valve and a limit block. There are multiple mold valves on the fixture bottom plate. Position block, U-shaped groove I, limit mounting hole, locking hole I and locking hole II are uniformly arranged on the bottom plate of the fixture, the outer surface of the mold valve is spherical structure, and the lower part of the mold valve is provided with a pre-positioning hole and a ball diameter The adjustment hole, the pre-positioning hole and the U-shaped groove I of the fixture bottom plate are connected by bolts, the ball diameter adjustment hole and the locking hole I are connected by bolts, the limiting block is in an L-shaped structure, and the wall at one end is provided with There are fastening holes, the fastening holes and the limit mounting holes on the bottom plate of the fixture are locked by bolts, and the shell can be clamped, but there will be a problem that the product shell cannot be tightly fitted on the outer spherical fixture, resulting in the shell When being processed, an error occurs

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