毕业设计：jm304b变速箱箱体钻孔组合机床总体及夹具设计.zip

毕业设计：JM304B变速箱箱体钻孔组合机床总体及夹具设计
论文说明书共34页，字数总计：15927
资料简介：
开题报告.doc
课题申报表.doc
文献资料
外文翻译.doc
实习报告.doc
毕业设计说明书：JM304B变速箱箱体钻孔组合机床总体及夹具设计.doc
毕业设计说明书封面.doc
英文摘要.doc
A0-夹具后支架.dwg
A0-加工示意图.dwg
A0-夹具体.dwg
A0-右支架.dwg
A3-左支架.dwg
A3-左定位块.dwg
A1-压板.dwg
A3-下定位块.dwg
A0-气缸托板.dwg
生产率计算卡.doc
A4-球头.dwg
A0-夹具装配图.dwg
A0-机床尺寸联系图.dwg
A0-被加工零件工序图.dwg
JM304B变速箱箱体钻孔组合机床总体及夹具设计
摘 要：课题来源于生产实际，JM304B变速箱箱体为大批量生产的零件，为了提高生产效率，满足被加工零件的精度要求且保持加工精度稳定，本课题设计了一台用于JM304B变速箱箱体三面钻孔的组合机床。
第一部分是总体设计。首先，进行了总体方案论证，采用单工位三面钻削组合机床，刀具选用高速钢麻花钻，并根据切削用量的选择，计算切削力、切削扭矩及切削功率，确定主轴直径、外伸尺寸、接杆型号，选择滑台、动力箱等通用部件，再确定动力部件的工作循环及工作行程，完成机床联系尺寸的制定。最后绘制了三图一卡。
第二部分是夹具设计。经过对被加工零件的全面分析，导向采用固定钻模板可换钻套导向，夹紧装置采用机械夹紧机构，直接夹压于工件上，反应快捷，夹压平稳可靠，夹具体有良好的刚性，使夹具腀@て诒３挚煽康木群臀榷ㄐ浴Ⅻbr>该组合机床不仅能保证钻孔精度，还能提高加工效率，降低工人的劳动强度。其夹具设计定位可靠、夹压稳定、操作方便，达到了设计要求。

关键词：组合机床；钻孔；夹具

The transmission housing of the General and Jig of the modular machine-tool for drilling the JM304B crude oil engine
Abstract：Topics from actual production. The transmission housing of the JM304B is made for large quantities of mass production. In order to prone the production efficiency, and meet the precision request of the components processed and the precision stability, it designs a combined machine-tool to be used in the three-cylinder diesel engine with both sides drilling holes.
The first part is general design. First, it carries out the argumentation of the overall plan, adopts the combined machine-tool with single location three faces drilling, selects the high-speed steel twist drill. According to the cutting parameters, it calculates the cutting force, the cutting torque and the cutting power, determines spindle diameter, the extend size and the link-pole model, choose sliding table, the power box and so on, then determines the operating cycle and the stroke of the power part, formulates the relation size of the machine-tool. Finally, it draws three figures and one card.
The second part is the jig design. Having analyze the work piece, the guiding equipment use the fixed drill plate with replaceable drill bush; the clamp uses the machinery device, it directly presses on the work piece, which responds quickly, fixes steadily and reliably; the jig-body utilizes the frame structure, possess fine rigidity, causes the jig to maintain good long-term precision.
This combined machine-tool not only guarantees the drill hole precision, but also enhances the processing efficiency, reduced workers' labor intensity. The jig orients reliably, clamps stably, operates easily, then meet the design request well.

Key words：modular machine-tool; drill hole; jig

目 录
1 前言 3
1.1 概述 3
1.2 课题由来及基本条件 3
1.3课题设计思路 4
1.4预期成果及实际价值 4
2组合机床总体设计 5
2.1 工艺方案的拟定 5
2.1.1 被加工零件的特点 5
2.1.2 分析、研究被加工零件 5
2.1.3组合机床总体方案论证 5
2.1.4 定位基准及夹压点选择 6
2.2确定切削用量及刀具选择 6
2.2.1 刀具的选择 6
2.2.2 切削用量的选择 7
2.2.3 计算切削力 切削扭矩 切削功率 及刀具耐用度 9
2.2.4 确定主轴尺寸 外伸尺寸 13
2.2.5 选择接杆 13
2.2.6动力部件工作行程及循环的确定 14
2.3通用部件的选择 14
2.3.1 选用滑台形式 14
2.3.2选液压滑台的型号 15
2.3.3选动力箱型号 16
2.3.4机床装料高度的确定 16
2.3.5中间底座尺寸的确定 17
2.4机床分组 18
2.5 生产率计算卡 18
3 组合机床夹具设计 21
3.1夹具设计的基本要求和步骤 21
3.1.1夹具设计的基本要求 21
3.1.2 夹具设计的步骤 21
3.2 定位方案的确定 22
3.2.1 零件的工艺性分析 22
3.2.2 定位方案的论证 22
3.2.3导向装置 23
3.3夹紧方案的确定 25
3.3.1 夹紧装置的确定 25
3.3.2 夹紧方案论证 25
3.3.3 夹紧力确定 26
3.4误差分析 27
3.5绘制夹具装配图及零件图 30
4 结论 31
参考文献 32
致谢 33
附录 34