如何加工不规则形状的变速箱体

张　强，郑云龙，刘　伟，郭丽坤，韩易峰，宁　莹

（哈尔滨第一机械有限公司，哈尔滨　150056）

摘　要：综合传动装置已成为装甲车辆行业的发展趋势，采用液压转向技术的综合传动是我国军用履带装甲车辆传动实现现代化目标中的一项关重技术。××变速箱体是Ch××综合传动装置中最重要的零件，主要功能是实现连接和固定，并为系统提供油路和油箱，形状复杂、壁薄且不均匀，内部呈腔形，加工部位多，加工难度大，既有精度要求较高的孔系和平面，也有许多精度要求高的紧固孔以及与箱体呈角度相通的油路孔。通过编制合理的加工工艺流程，选择合适的定位装夹方案，有效利用各种数控设备和加工刀具，设定最佳切削用量是保证复杂箱体类零件加工质量，提高生产效率的重要途径。

关键词：不规则形状；五面体；镗孔；精度；切削用量

中图分类号：TJ399　文献标志码：A

作者简介：张强（1969—），男，高级工程师，E-mail：546986044＠qq.com。(www.xing528.com)

Machining of gearbox with irregular shape

ZHANG Qiang，ZHENG Yunlong，LIU Wei，GUO Likun，HAN Yingfeng，NING Ying

（Harbin First Machinery Group co.LTD HLJ，Harbin 150056，China）

Abstract：Integrated transmission has become the development trend of armored vehicle industry，the inte⁃grated transmission device using hydraulic steering technology is a key technology in realizing modernization of military tracked armored vehicle transmission in China.The XX gearbox is the most important part of the CHXX integrated transmission.The main function is to realize connection and fixation，it also provides fuel lines and fuel tanks for the system，the shape is complex and the walls are thin and uneven，internal cavity shape，processing parts，processing difficulty.There are not only hole system and plane with high precision，but also many fastening holes with high precision and oil hole with angle connecting with the box body.It is important way to ensure the processing quality of complex box parts and improve the production efficiency by compiling reasonable processing process，selecting appropriate positioning and clamping scheme，making effective use of various CNC equipment and machining tools，and setting the optimal cutting parameters.

Keywords：irregular shape；pentahedron；boring，precision；cutting parameter