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后钢板绷簧吊耳加工工艺及夹具规划论文
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  • 后钢板绷簧吊耳加工工艺及夹具规划摘 要

    在夹具的规划过程中,最重要的主要是被加工零件的定位、夹紧等问题。这是规划工程师有必要考虑到的问题,假如夹具呈现任何的小问题,必将影响被加工零件的加工精度,然后损坏零件的精细性。而在夹具的规划过程中,简单呈现的有规划端面夹具时的清根问题,特别是在规划端面和内孔夹具时。假如零件定位内孔孔口倒角较小或许没有倒角,就有必要清根,相反,若零件定位内孔孔口倒角较大或许是空位,就不需求清根。在规划圆盘类刀具加工夹具时,还存在让刀的问题,在规划这类夹具时,要考虑铣刀或砂轮完结切削或磨削后,铣刀或砂轮的退刀方位,而它的方位巨细应根据所运用的铣刀或砂轮的直径巨细,留出超越刀具半径尺度的方位即可。而为了进步夹具的利用率,一般把夹具规划成几个零件的通用型夹具。
    跟着机械工业的高速开展,我国现在需求大力开展高精细的机械设备仪器,特别是像关于后钢板绷簧吊耳这类非规矩类零件的加工,以及加工它所需的设备夹具等,市场上还需求更多精细、成本低和通用型的组合夹具。
    关键词:后钢板绷簧吊耳,专用夹具,加工工艺
    ABSTRACT
    In the design process of the fixture, the most important issues are the positioning and clamping of the machined parts. This is a problem that design engineers must consider. If any small problems occur in the fixture, it will affect the machining accuracy of the machined part, thus destroying the precision of the part. In the design process of the fixture, it is easy to have the problem of clearing the root when designing the end face fixture, especially when designing the end face and the inner hole clamp. If the chamfering of the inner hole of the part positioning is small or there is no chamfering, the root must be cleared. On the contrary, if the chamfering of the inner hole is large or empty, the rooting is not required. When designing a disc-type tooling fixture, there is also the problem of the knife. When designing such a fixture, consider the position of the cutter or the retracting of the grinding wheel after the milling or grinding wheel is finished cutting or grinding, and its position. The size should be based on the diameter of the milling cutter or grinding wheel used, leaving a position beyond the tool radius. In order to improve the utilization of the fixture, the fixture is generally designed as a universal fixture of several parts.
    With the rapid development of the machinery industry, China now needs to vigorously develop high-precision mechanical equipment, especially for the processing of irregular parts such as rear leaf spring lifting lugs, and the equipment fixtures needed to process it. There is also a need for more sophisticated, low cost and versatile combination fixtures.
    Key words: rear leaf spring lifting lug, special fixture, processing technology
    目 录
    1 序言---------------------------------------------------------------------------------------------1
    2 后钢板绷簧吊耳加工工艺流程规划------------------------------------------------2
    2.1 零件剖析----------------------------------------------------------------------------------4
    2.2定位基准的挑选----------------------------------------------------------------------5
    2.3拟定工艺道路-------------------------------------------------------------------------6
    2.4确认工序尺度及加工余量----------------------------------------------------------7
    2.5确认切削用量及根本工时-----------------------------------------------------------8
    3铣削后钢板绷簧吊耳内旁边面的夹具规划------------------------------------------19
    3.1粗铣后钢板绷簧吊耳内旁边面的夹具规划--------------------------------------------19
    3.2定位基准的挑选以及定位计划的剖析-----------------------------------------------19
    3.3夹紧力和铣削力的核算-----------------------------------------------------------------20
    3.4定向键设备的规划-----------------------------------------------------------------------20
    3.5夹具设备的规划及夹紧力的核算-----------------------------------------------------21
    3.6夹具设备的扼要阐明--------------------------------------------------------------------22
    3.7夹具设备的安全性剖析-----------------------------------------------------------------22
    3.8铣内旁边面夹具的三维建模--------------------------------------------------------------22
    4加工φ30mm孔的夹具规划--------------------------------------------------------------24
    4.1加工φ30mm孔的夹具规划-------------------------------------------------------------24
    4.2定位基准的挑选以及定位计划的剖析-----------------------------------------------24
    4.3夹紧力和铣削力的核算-----------------------------------------------------------------25
    4.4钻套、衬套及夹详细的规划-----------------------------------------------------------25
    4.5夹具的精度剖析--------------------------------------------------------------------------26
    4.6夹具设备的扼要阐明--------------------------------------------------------------------27
    4.7夹具设备的安全性剖析-----------------------------------------------------------------27
    5加工φ10.5mm孔的夹具规划----------------------------------------------------------------28
    5.1加工φ10.5mm孔的夹具规划----------------------------------------------------------28
    5.2定位基准的挑选以及定位计划的剖析-----------------------------------------------28
    5.3夹紧力和铣削力的核算-----------------------------------------------------------------29
    5.4定位元件的规划--------------------------------------------------------------------------29
    5.5钻套、夹详细的规划--------------------------------------------------------------------30
    5.6夹具的精度剖析--------------------------------------------------------------------------31
    5.7夹具设备的扼要阐明--------------------------------------------------------------------31
    5.8夹具设备的安全性剖析-----------------------------------------------------------------31
    6有限元剖析-------------------------------------------------------------------------------------32
    6.1有限元剖析概述--------------------------------------------------------------------------32

    6.2支承钉的有限元剖析--------------------------------------------------------------------32
    7机械加工工艺的影响要素----------------------------------------------------------36
    7.1机械加工工艺风险要素剖析和操控-----------------------------------------------------36
    7.2机械加工工艺的经济性剖析----------------------------------------------------36
    8定论------------------------------------------------------------------------------------------------37
    参考文献--------------------------------------------------------------------------------------------38
    称谢---------------------------------------------------------------------------------------------------39

    ...
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