三孔轴承盖加工工艺及Z525钻床夹具设计.doc

三孔轴承盖加工工艺及Z525钻床夹具设计 【 】本设计主要是关于普通钻床改造为多轴钻床的设计及其夹具设计。普通钻 床为单轴机床，但安装上多轴箱就会成为多轴的钻床，改造成多轴钻床后，能大大地缩 短加工时间，提高生产效率。因此本设计的重点是多轴箱的设计，设计内容包括齿轮分 布与选用、轴的设计、多轴箱的选用、手向装置设计等。 本次设计所选定的夹具方案为采用圆柱面定心央具（三个点确定一个圆），定位准 确，采用压板进行压紧，进行各种机械加工，夹紧力稳定，能满足普通精度机床的要求。 【关键词】：多轴钻床；立式；钻床；多轴头；固定；夹具 Three-ring bearing cover machining technology and Z525 drilling fixture design Abstract: The design is about reconstructing the ordinary drill to a multiple drill and fixture design. The ordinary drill is a single drill. It will improve its productive efficiency, shorten its processing time if assembled a multiple spindle case on. That so calls a multiple drill. Hereby，the keystone of this design paper is how to design a multiple spindle heads. The design subjects include the selection and distribution of gear wheel, the design of spindle, and the guiding equipment and selection of the multiple spindle heads，etc. This design of fixture scheme selected for using cylinder centralizer(There points define a circle) .With clamp pressure, all kinds of mechanical processing, clamping force is stable and can meet the requirement of general precision machine tools. Key words: multiple drill; drilling machine； multiple spindles heads; fixture； 1概述 1多轴头的加工应用和组成 1.2多轴头的发展现状 1.3设计多轴头的技术思路 TOC \o 1-5 \h \z HYPERLINK \l bookmark5 \o Current Document \h 1.4多轴头加工趋势 3 HYPERLINK \l bookmark6 \o Current Document \h 2工艺设计 4 HYPERLINK \l bookmark7 \o Current Document \h 1零件的技术要求分析 4 HYPERLINK \l bookmark8 \o Current Document \h 1. 1轴承盖的结构特点 4 1.2零件的技术要求表 4 HYPERLINK \l bookmark9 \o Current Document \h 1.3轴承盖的作用 4 HYPERLINK \l bookmark10 \o Current Document \h 2. 1.4毛坯的选择 4 HYPERLINK \l bookmark11 \o Current Document \h 2. 2各表面加工方法确定 5 HYPERLINK \l bookmark12 \o Current Document \h 2. 3工艺路线确定 5 2. 3. 1各表面加工方法的选择 2. 3. 2加工阶段的划分 2. 3.2加工顺序的安排 2. 4加工余量和工序尺寸确定 2. 5设备及工、卡、量具确定 7 2. 6工时定额计算 2. 6. 1工序1粗车轴承盖两端面 222222 2 2 2 2 2 2 6 6 6 6 6 6 2工序2粗车轴承盖和外圆表面 8 3工序3钻孔 9 4工序4扩孔 10 5工序5粗镗孔 10 6工序6半精镗孔 10 7工序7半精车轴承盖和外圆表面 10 TOC \