Direct Limit and Pushout in the Category of Semimodules;
半模范畴中的正向极限与推出
In this category, solving the homo- " # A geneous linear equation set ( A, B )X = 0(or X = 0) have close contact with seeking the pushout for morphisms B " # .
除环上有零对象的矩阵范畴是Abel范畴,在这个范畴中,解齐次线性方程组( A, B )X = A0(或者X = 0)与求态射{A,B}的推出(或者求态射{A,B}的拉回)有着密切的关系。
Througn designing three axial slots in internal threaded portion and optimizing nib structure,a design was made on the injection mould with a two-step ejecting mechanism with non-rotating.
对笔尖内螺纹部分设计三段轴向开槽,优化笔尖结构,设计了二次推出不带旋转机构的自动脱螺纹注塑模。
The decision of stepped type of parting line,design of vertical slot gate runner system,pre-replacement ejecting mechanism and insertion structure were described.
通过对主体压铸件的结构工艺性分析,确定了模具结构设计方案,介绍了台阶分型面选择、立式缝隙浇口浇注系统设计、预复位推出机构设计和镶块镶拼结构设计。
Through analyzing the technologies of clamp ferrule,the work principles of shaping mould structure and ejecting mechanism were introduced.
通过对夹套的工艺分析 ,介绍了其成形模具的结构和推出机构的工作原理 ,从根本上解决了工件取出困难的问