机械5

摘要 在机械工业中，产品由于在质量、效能和可靠性等方面有很高的要求，而且构造特点一般表现为形状复杂、壁雹刚度低、技术要求高等。因此，对它的制造与工艺就显得非常具有挑战性和严格性。 本次设计是针对阀导承的制造与工艺,详细地介绍了该产品的整个加工方案的拟订过程，并针对其中钻孔的工序所需的专用夹具进行了设计。工艺设计中依据现有的条件，仍选用传统的机械加工方式进行编制，但又根据零件斜孔特点及其结构性能的要求,部分按照非常规的加工路线进行加工，更好的确保了产品的质量和技术性能要求，也体现产品的加工特点。另外，在专用夹具的设计中，采用了螺栓联接式夹具体，与传统的焊接式相比，虽然成本略有提高，但更利于夹具以后更换、维修，提高了材料的利用率。此外为次道工序所加工的孔设计的夹具还要考虑到加工的孔是斜孔,夹具还要保证其与水平面的夹角,这也增加了夹具设计的难度。 关键词：工艺工序专用夹具 Abstract I
n the machi
nery i
ndustry, the products i
n the quality, performa
nce a
nd reliability requireme
nts are high, a
nd co
nstructed for the ge
neral performa
nce characteristics of the shape of complex, thi
n-walled, low stiff
ness, high tech
nical requireme
nts. Therefore, the ma
nufacturi
ng a
nd process it becomesvery challe
ngi
ng a
nd rigorous
nature. The desig
n is for thevalve guide for the ma
nufacturi
ng a
nd tech
nology, detailed descriptio
n of the product throughout the course of processi
ng programs, a
nd procedures forwhich required a special fixture desig
ned. Process desig
n based o
n existi
ng co
nditio
ns, still choose the traditio
nal approach to the preparatio
n of machi
ni
ng, but i
n accorda
ncewith the characteristics of parts a
nd the structure of their ow
n performa
nce requireme
nts, some of the processi
ng i
n accorda
ncewith the
no
n-co
nve
ntio
nal processi
ng routes a
nd better e
nsure that the products quality a
nd tech
nical performa
nce requireme
nts, but also the characteristics of their products. I
n additio
n, the dedicated fixture desig
n, the use of the bolt-type co
n
nectio
n specific folder, a
nd compared to traditio
nalwelded, although slightly higher cost, but it is more be
neficial after the replaceme
nt of fixtures, mai
nte
na
nce, improve the utilizatio
n of the material. I
n additio
n to the processi
ng procedure at the hole of the fixture desig
n must take i
nto accou
nt the processi
ng of the hole is the sla
nt-hole, jig also its a
nglewith the horizo
ntal pla
ne,which also i
ncreased the difficulty of fixture desig
n. Keywords: Process process dedicated fixture 目录 前言1 摘要2 Abstract 3 一．机床夹具5 (一).机床夹具5 （二）.机床夹具的功能5 （三）.机床夹具在机械加工中的作用5 （四）.机床夹具的发展趋势6 二.零件的分析7 （一）零件的作用7 （二）零件的工艺分析7 三．制订工艺路线。 8 （一）定位基准的选择8 （二）制订工艺路线8 （三）选择加工设备及刀、量、夹具9 （四）加工工序设计10 五、夹具设计22 设计体会23 参考文献24