Machining method for numerical control milling of thin-wall curved-surface irregular parts

A processing method and numerical control milling technology, applied in the field of mechanical processing, can solve the problems of difficult clamping and complex processing.

Active Publication Date: 2016-03-09
XIAN AEROSPACEMOTOR MACHINE FACTORY
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  • Abstract
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Problems solved by technology

[0007] In order to overcome the shortcomings of difficult clamping and complicated processing process in the processing of thin-walled curved surface special-sha

Method used

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  • Machining method for numerical control milling of thin-wall curved-surface irregular parts
  • Machining method for numerical control milling of thin-wall curved-surface irregular parts
  • Machining method for numerical control milling of thin-wall curved-surface irregular parts

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Experimental program
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Embodiment Construction

[0075] This embodiment is a method of milling the upper and lower profiles of a thin-walled curved surface special-shaped part using a three-axis milling machining center.

[0076] The thin-walled curved surface special-shaped parts are made of ultra-high-strength steel 30Si2MnCrMoVe. The blanking size is Ф330×138. After turning the end face and outer circle and flaw detection, a circular block-shaped blank with thin-walled curved surface is obtained. The upper profile, the lower profile and the workpiece lifting lug of the thin-walled curved surface special-shaped part are processed by numerical control milling according to the following steps.

[0077] Step 1, process the milling process to press the groove. Horizontal process pressure grooves 10 are milled on both sides of the blank respectively, and are used for clamping and positioning of the workpiece during subsequent processing of the profile. The space between the centerline in the width direction of the process emb...

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Abstract

A machining method for numerical control milling of thin-wall curved-surface irregular parts aims at providing a technological scheme and a clamping method used in the machining process of the thin-walled curved-surface irregular parts. According to the machining method, an upper irregular curved-surface area and a lower irregular curved-surface area are divided in a blocked mode and technological clamping blocks are reserved by reasonably arranging the technological process and dividing a cutting area, positioning tools and rough and finish milling numerical control machining procedures are designed, and cutting tool selecting and cutting parameters are determined, linear cutting machining of the like products is replaced by milling machining, the machining cost is reduced, and the machining efficiency and product quality are improved.

Description

technical field [0001] The invention relates to the field of mechanical processing, in particular to a numerical control milling method for thin-walled curved surface special-shaped parts. Background technique [0002] This part is one of the most important parts of a solid rocket motor casing. When the final product is used, it plays the role of mounting and connection. The processing quality of the workpiece directly affects the final performance of the product. Moreover, the size of the lug part of the part is the size of the final assembly interface, and the requirements for shape and position tolerances and dimensional tolerances are high. [0003] This part belongs to thin-walled curved surface special-shaped parts. The workpiece is mainly composed of two parts: the lifting lug part and the thin-walled curved surface part. The lifting lug part can be regarded as a simple two-dimensional graphic stretching entity (see attached figure 1 ), the thin-walled curved surface...

Claims

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Application Information

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IPC IPC(8): B23C3/00B23C3/28B23C3/16
CPCB23C3/00B23C3/16B23C3/28B23C2220/605
Inventor 闫飞宇马延枫宋鑫姚蕾曲中兴谢勇智刘强陈刚陈榕孟继东穆为迎刘琦苗金龙赵润辉张博王蕾田珍珠张立平张杨白文怡王文娟
Owner XIAN AEROSPACEMOTOR MACHINE FACTORY
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