Method for determining structural size of rolling and spinning blank of large-taper complex special-shaped ring disc part

Abstract

The invention discloses a method for determining the structural size of a rolling and spinning blank of a large-taper complex special-shaped ring disc part. The rolling ratio k is determined through the size of a ring disc part and the diameter of a core roller. The height h0, the wall thickness b0, the inner diameter d0 and the outer diameter D0 of the rolling and spinning blank rectangular section ring are determined according to the determined rolling ratio. The inner diameter d01 of the small end and the outer diameter D01 of the large end of the conical section ring of the rolling and spinning blank are determined according to the determined outer diameter D0 of the rectangular section ring of the rolling and spinning blank and the length of the neutral layer when the rolling and spinning blank is bent. The height h10 of the large end of the conical section ring of the rolling spinning blank is determined through the volume of the conical section ring of the ring disc part, and then the height h20 of the small end of the conical section ring of the rolling spinning blank is determined. For the determined large-taper complex special-shaped ring disc part, a series of rolling and spinning blanks with different sizes are obtained by selecting different rolling ratios k and the value of the height h10 of the large end of the conical section ring of the rolling and spinning blank, so that the design efficiency of the blanks can be improved by 60-70%, and the production cost is reduced by 40-50%; Technical support is provided for the rolling spinning forming process scheme design of the large-taper complex special-shaped ring disc part.

Description

technical field [0001] The invention belongs to the field of rolling and forming processing of large-taper complex special-shaped ring and disk parts, and specifically relates to a method for determining the structural size of a large-taper complex special-shaped ring and disk piece rolling blank. Background technique [0002] The large-taper complex special-shaped ring-disk rolling forming is a new process method proposed for the manufacture of ring-disk components such as the front and rear joints of rocket and missile engine combustion chamber shells. Proposed "a rolling and spinning method for large-taper and complex special-shaped ring-disk components". Dimensional accuracy has an important influence, so it is the first key technology that the process urgently needs to solve. At present, the design of rolling blanks still relies on experience and trial and error, and there is still a lack of scientific and effective methods, resulting in a large difference between the ...

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Problems solved by technology

[0003] In order to overcome the shortcomings of low forming accuracy, low material utilization rate, high cost and difficult performance guarantee due to the lack of reasonable blank size design methods in the prior art, the present invention proposes a complex special-shaped ring disc with large taper The Method of Structural Dimensions of Rolling Billet

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