Method for processing nozzle shell by using bar stock
A nozzle housing and bar machining technology, which is applied in the field of bar machining parts, can solve the problems of poor opening of joints and mounting edges, complex structure, and difficult material processing.
Inactive Publication Date: 2013-11-27
SHENYANG LIMING AERO-ENGINE GROUP CORPORATION
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[0003] The invention particularly provides a method for processing nozzle shells with bar stock, which solves the problem of using bar stock to process shells with complex structures, high technical requirements, poor opening of joints and mounting edges, short positioning references, and difficult materials to process. Difficulties in processing body parts
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[0042] The method for processing the nozzle housing with bar stock as described in this embodiment rationally designs the processing route, process method and processing positioning reference of the parts; The gun drill (90) solves the problem of deep hole processing, and adopts the method of CNC wire cutting, CNC milling and turning to solve the processing problem of the space angle joint (8) and the installation edge (3). The circle (12)) is relatively short. In order to improve the stability of part positioning, the large outer circle of the head (11) is extended to 25mm in the process as the process clamping positioning reference and measurement reference. After all the parts are processed, the The process benchmark is turned off to ensure the final size requirements of the parts; most of the allowance is removed by CNC wire cutting, and the unreachable parts of milling and turning are processed in place at one time, leaving a small amount of manual grinding allowance, and ...
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The invention discloses a method for processing a nozzle shell by using a bar stock, wherein the bar stock is a nickel-based high-temperature alloy. The method comprises the steps of: 1, processing the bar stock into a head part and a tail part and a mounting edge semi-finished products of the nozzle body; 2, processing a shell deep hole oil path with a diameter of 6mm, a wall thickness of 2mm and a length-diameter ratio of 17:1, processing to obtain a head part small end face, a mounting edge end face, a lengthened head part large excircle and a head part small excircle of the nozzle shell, wherein the lengthened head part large excircle is used as a process reference; 3, drilling and reaming a mounting hole on a mounting edge; 4, carrying out wire-electrode cutting on the tail part of the shell, and processing to obtain a joint, reserving machining allowance on the joint; 5, processing the tail part of the shell by using a three-shaft mill; 6, lathing to remove the machining allowance of the joint; and 7, lathing to remote the process reference. The method for processing the nozzle shell by using the bar stock, provided by the invention, solves the processing difficulties of complex processing structure of the bar stock, high technical condition requirement, poor processing openness of the joint and the mounting edge, short positioning reference and difficulty in processing materials of shell type parts.
Description
technical field [0001] The invention relates to a method for machining a part with a bar, and in particular provides a method for machining a nozzle shell with a bar. Background technique [0002] In the early stage of the development of an engine nozzle housing, the bar material was used to process complex structures, thin walls, deep holes with a length-to-diameter ratio of 17:1, joints with space angles and special-shaped mounting edges, and the material was nickel-based superalloys that are difficult to process. Using ordinary extended drills and reamers, the surface quality of the processed holes is not good, the straightness is poor, the cylindricity is poor, the processing efficiency is very low, and sometimes the drill is folded in the hole, causing the parts to be scrapped. The openness of joints with space angles and special-shaped mounting edges is not good, and it is difficult for turning tools to machine to the transition between joints and mounting edges, and t...
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IPC IPC(8): B23P15/00
Inventor 魏鉴梅赵昌辉金英卓曹勇高阳
Owner SHENYANG LIMING AERO-ENGINE GROUP CORPORATION