电加工与模具
電加工與模具
전가공여모구
ELECTROMACHINING & MOULD
2014年
2期
18-20,28
,共4页
陈伟%韩福柱%王津%徐成
陳偉%韓福柱%王津%徐成
진위%한복주%왕진%서성
磁流变抛光%电火花线切割加工%型腔模具
磁流變拋光%電火花線切割加工%型腔模具
자류변포광%전화화선절할가공%형강모구
magnetorheological polishing%WEDM%cavity mould
电火花线切割贯通形型腔模具的内腔形状复杂,一般抛光方法很难达到高精度的要求。在型腔模具的加工过程中,切割的内型与型腔模具相符合,如能利用内型抛光型腔,会极大地降低成本。针对这一问题,提出了一种新的型腔模具磁流变抛光方法,并对其磁场分布进行了分析。该方法利用加工型腔模具时切割下来的内型,与柱状磁铁连接,在其表面产生磁场,对浸在磁流变抛光液中的型腔模具进行往复循环抛光。这种方法不需单独制作与型腔形状吻合的永久磁铁抛光磨具,节省了成本,提高了效率。
電火花線切割貫通形型腔模具的內腔形狀複雜,一般拋光方法很難達到高精度的要求。在型腔模具的加工過程中,切割的內型與型腔模具相符閤,如能利用內型拋光型腔,會極大地降低成本。針對這一問題,提齣瞭一種新的型腔模具磁流變拋光方法,併對其磁場分佈進行瞭分析。該方法利用加工型腔模具時切割下來的內型,與柱狀磁鐵連接,在其錶麵產生磁場,對浸在磁流變拋光液中的型腔模具進行往複循環拋光。這種方法不需單獨製作與型腔形狀吻閤的永久磁鐵拋光磨具,節省瞭成本,提高瞭效率。
전화화선절할관통형형강모구적내강형상복잡,일반포광방법흔난체도고정도적요구。재형강모구적가공과정중,절할적내형여형강모구상부합,여능이용내형포광형강,회겁대지강저성본。침대저일문제,제출료일충신적형강모구자류변포광방법,병대기자장분포진행료분석。해방법이용가공형강모구시절할하래적내형,여주상자철련접,재기표면산생자장,대침재자류변포광액중적형강모구진행왕복순배포광。저충방법불수단독제작여형강형상문합적영구자철포광마구,절성료성본,제고료효솔。
The WEDMed pierced cavity mould has a complex shape and demands high polishing precision,and the general polishing methods are hard to meet the requirements. It finds that in the process of machining a pierced cavity mould by WEDM,the core is obtained of which the shape is well coincide with the cavity. If the core can be used to polish the cavity,the processing cost will decrease greatly. To solve this problem,this paper presents a new magneto-rheological scheme for polishing pierced cavities mould and makes an analysis of the magnetic field distribution. In this scheme,the core formed in cutting pierced cavity mould is connected with the columnar permanent magnet which produces magnetic field on for the core,then reciprocating motions are made for the core to polish the cavity in the MRF polishing slurry. Using this method,the polishing tool made from a permanent magnet which fits the cavity in shape is no necessary. Therefore,it saves cost and improve the polishing efficiency.