|Table of Contents|

Machining technology research of cavitating venturi with deep tapered micro-hole(PDF)

《火箭推进》[ISSN:1672-9374/CN:CN 61-1436/V]

Issue:
2015年06期
Page:
68-72
Research Field:
工艺与材料
Publishing date:

Info

Title:
Machining technology research of cavitating venturi with deep tapered micro-hole
Author(s):
HE Weidong;  ZHAN Haipeng;  SHI Yong
Xi’an Space Engine Factory, Xi’an 710100, China
Keywords:
deep tapered micro-hole;  cavitating venturi;  precision machining
PACS:
V434-34
DOI:
-
Abstract:
The precision machining technology of cavitating venturi with deep tapered micro-hole is introduced in this paper. In order to realize precision machining of the cavitating venturi with deep tapered micro-hole, the precision lathing-boring machining of convergent section and throat of cavitating venturi, drilling of Ф0.65 through-hole, and milling and reaming of 6° tapered hole were studied. Kyocera 6° tapered milling cutter and 6° tapered reamer were customized for the milling and reaming of 6° tapered holes. Both the cutter and reamer are made of high strength submicron tungsten carbide, and coated with high hardness nano-composite structure coating. The special structure of the two tools could eliminate vibration and increase the intensity of cutting edge. The optimal process specifications of cavitating venturi with deep tapered micro-hole machining were obtained. The cavitating venturi made with the optimal process specifications can whose inner surface roughness is Ra0.4. It has passed the liquid flow test. The engine with the cavitating venturi was verified in the ground hot firing test.

References:

[1]中国航天工业总公司. 液体火箭发动机汽蚀文氏管通用规范, QJ1783A-96[S]. 北京: 中国航天工业总公司第七零八研究所, 1997.
[2]刘国球, 任汉芬, 朱宁昌, 等. 液体火箭发动机原理[M]. 北京: 宇航出版社, 1993.
[3]黄立德, 林忠岳, 尹克敏, 等. 发动机制造技术[M]. 北京:宇航出版社, 1990.
[4]曾忠, 黎永明. 微孔加工技术的现状[J]. 磨床与磨削, 1994 (4): 20-23.

[5]潘小苏. 高精度深小孔车(镗)加工刃具的应用[J]. 电子机械工程, 2004 (3): 40-44.

[6]黄传真, 李兆前, 艾兴, 等. 新型陶瓷刀具JX-2-Ⅱ切削电镀纯镍的研究[J]. 工具技术, 1995 (29): 37-39.
[7]许祥泰, 刘艳芳. 数控实用加工技术[M]. 北京: 机械工业出版社, 2000.
[8]文氏管在液压与气动技术中的应用[J]. 液压与气动, 2002 (6): 29-30.
[9]汪光文. 空调系统文氏管设计研究[J].科技信息, 2011(22): 804.
[10]李钰, 马继山. 钣金件快速精确加工中的激光切割工艺分析[J]. 火箭推进, 2008(4): 43-47. LI Yu, MA Jishan. Process analysis of laser cutting for sheet metal parts rapid precision machining[J]. Journal of Rocket Propulsion, 2008(4): 43-47.
[11]吴望一. 流体力学[M]. 北京: 北京大学出版社, 2004.
[12]徐之焜. 薄壁半球类零件的数控加工[J]. 火箭推进, 2006(2): 41-45. XU Zhikun. Numerical processing of thin-wall hemi- spherical type parts[J]. Journal of Rocket Propulsion, 2006 (2): 41-45.
[13]赵飞, 黄红耀. 大直径薄壁球形阀芯加工工艺[J]. 火箭推进, 2012 (1): 62-67. ZHAO Fei, HUANG Hongyao. Machining technology of thin-walled spherical valve core with large diameter[J]. Journal of Rocket Propulsion, 2012 (1): 62-67.

Memo

Memo:
-
Last Update: 1900-01-01