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| 阀螺栓的机械加工设计 摘要 计算生产纲领，确定生产类型；对产品装配图进行分析，完成零件图纸的审查；明确毛坯的类型、形状、尺寸和精度；绘制工艺路线（划分工艺过程的级成、确定定位基准、选择具体的零件外部加工方法、明确加工顺序、机床的选型）；完成工序设计（明确不同工序的余量、切削用量、工序尺寸和公差，工艺装备选型，通过计算确定时间定额）；明确工序的技术要求和检验方法，完善工艺文件。 基于生产、技术条件以及产品使用要求，从工艺层面着手，从如下几个方面审查零件图纸：视图、尺寸、公差和技术要求；加工要求是否合理；零件结构的工艺性等。 关键词：工序，工艺，工序余量，公差 Abstract Calculate the production plan, determine the production type, analyze the product assembly drawing, complete the examination of the part drawing, define the type, shape, size and precision of the blank, draw the process route (divide the process into stages, determine the positioning datum,Select specific external machining methods of parts, define machining order, type selection of machine tools, complete process design (define allowance of different working procedures, cutting parameters, working procedure dimensions and tolerances, type selection of process equipment, etc.Time quota is determined by calculation, technical requirements and inspection methods of working procedure are defined, and process documents are improved.Based on the production, technical conditions and product usage requirements, this paper reviews the drawings from the following aspects: views, dimensions, tolerances and technical requirements; whether the processing requirements are reasonable; and the workmanship of the parts' structure, etc. Keyword: Process, process, procedure allowance, tolerance  |
