1.1数控编程的基本概念 数控编程是从零件图纸到获得数控加工程序的全过程。它的主要任务是计算加工走刀中的刀位点( cutter location point简称CL 点)。刀位点一般取为刀具轴线与刀具表面的交点,多轴加工中还要给出刀轴矢量 12数控编程技术的发展概况 为了解决数控加工中的程序编制问题,50年代,MIT设计了一种专门用于机械零件数控加工程序编制的语言,称为APT ( Automatically Programmed Tool)

Collaborate Document Management Plan and design up front Create a short model section for information content and order Create a layout template Create a document control system for revisions Accept individual responsibility and deadlines

Can you read this text??? Can you read this text? What a great way to put off an audience!!! Such attractive colours, too!

How do you start? Assume the audience is technically competent, but isn't familiar with your project? What do they need to know first?

Definitions What is Systems Engineering? the ensemble of coordinated analyses, simulations, and processes which lead to a technical product which best meets the needs of an identified customer What does it mean to manage systems engineering?

7-1装配式简支梁桥类型 7-2装配式钢筋混凝土简支ㄒ梁桥 7-3装配式预应力混凝土简支ㄒ梁桥

第一节混凝土梁桥的特点 第二节梁桥的主要类型及其适用条件 第三节支座的类型和构造

第一节永久作用 第二节可变作用 第三节偶然作用 第四节作用效应组合

第一节贴钢法 第二节贴碳纤维布法 第三节锚喷混凝土加固拱桥

第一节体外预应力的加固机理 第二节体外预应力加固法的设计和施工技术