Efficient grid milling method for inner curved surface of tapered revolving body
A technology of revolving body and inner surface, applied in the field of milling, can solve the problems of long processing cycle, difficult to guarantee processing quality, uneven wall thickness, etc., and achieve the effect of improving processing efficiency, shortening manufacturing cycle and improving part quality
Active Publication Date: 2015-03-25
HUBEI SANJIANG AEROSPACE GRP HONGYANG ELECTROMECHANICAL
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[0018] Aiming at the above defects or improvement needs of the prior art, the present invention provides a high-efficiency milling method for the inner grid surface of a conical rotary body, which is used to process and shape the integrally forged blank into a thin-walled cone with a multi-opening inner grid surface. Shaped rotary parts, the parts have small deformation and high dimensional accuracy, which can effectively improve the processing efficiency and solve the existing processing methods such as large deformation, uneven wall thickness, corner gnawing on the inner mesh surface, and the use of fitter grinding for side wall cleaning. The processing cycle is long and the processing quality is difficult to guarantee
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[0038] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.
[0039] refer to Figure 1 ~ Figure 3 , a method for efficient milling of an inner mesh surface of a tapered body of revolution, comprising the following steps:
[0040] 1) Rough milling of the inner surface of the conical rotary body: the inner surface of the blank is originally smooth and has no grid, so it is necessary to divide the inner surface into a grid structure, and the network structu...
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The invention discloses an efficient grid milling method for an inner curved surface of a tapered revolving body. The efficient grid milling method comprises the following steps: 1) conducting coarse milling on the inner curved surface of the tapered revolving body; 2) conducting heat treatment on the tapered revolving body so as to control the roundness deformation to be within 2 mm; 3) conducting semi-fine milling on the inner surface of the tapered revolving body, wherein the allowance in the inner surface is 0.7 to 1.3 mm; 4) conducting artificial ageing treatment on the tapered revolving body to remove stress generated during coarse milling and semi-fine milling of the tapered revolving body; 5) conducting fine milling on the inner surface of the tapered revolving body till the wall thickness achieves the design size. Due to semi-fine milling, artificial ageing treatment and reasonable machining allowance distribution, problems of part deformation, uneven wall thickness and poor roundness of the tapered revolving body are solved; the product processing efficiency is improved by designing cutting parameter and tool path, wherein the part processing efficiency is improved by 2 to 3 times, the part qualified rate is improved from 70 percent to higher than 97 percent.
Description
technical field [0001] The invention belongs to the field of milling processing, and in particular relates to a high-efficiency milling method for an inner grid curved surface of a conical revolving body. Background technique [0002] At present, large-scale thin-walled conical rotary parts are mainly manufactured by skeleton-skin riveting, casting, chemical milling, fusion welding, integral forging or friction stir welding. [0003] The manufacturing process level and manufacturing equipment capability of large-scale conical rotary body put forward the requirements of updating and low-cost manufacturing. The manufacture of large-scale integral conical rotary body must not only satisfy the light structure, but also have good comprehensive mechanical properties. Currently, the network The large conical body of revolution with the inner surface of the lattice bar has become a preferred structure type for product design. It is usually manufactured by forging blank + mechanical...
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IPC IPC(8): B23C3/16
CPCB23C3/02
Inventor 郭玉罗加斌刘凯程慧珍
Owner HUBEI SANJIANG AEROSPACE GRP HONGYANG ELECTROMECHANICAL