《DFMA面向制造与装配的设计》英文版 第9-10部分(86页)

  • 《DFMA面向制造与装配的设计》英文版 第9-10部分(86页)

    在产品设计阶段,充分考虑来自于产品制造和装配的要求,使得机械工程师设计的产品具有很好的可制造性和可装配性,从根本上避免在产品开发后期出现的制造和装配质量问题。

    本附件包含以下内容:

    Product Design for Manufacture and Assembly(Third Edition)

    9. Design for Sheet Metalworking....... 375

    9.1 Introduction..... 375

    9.2 Dedicated Dies and Pressworking.................... 376

    9.2.1 Individual Dies for Profile Shearing.... 377

    9.2.2 Cost of Individual Shearing Dies......... 381

    9.2.3 Individual Dies for Piercing Operations.... 387

    9.2.4 Individual Dies for Bending Operations....389

    9.2.5 Individual Dies for Deep Drawing...... 392

    9.2.6 Miscellaneous Features.......................... 398

    9.2.7 Progressive Dies............ 399

    9.3 Press Selection....400

    9.3.1 Cycle Times....................405

    9.4 Turret Pressworking..................407

    9.5 Press Brake Operations............. 410

    9.6 Design Rules.... 413

    References.................. 421

    10. Design for Die Casting.......................423

    10.1 Introduction.....423

    10.2 Die-Casting Alloys.....................423

    10.3 Die-Casting Cycle......................425

    10.4 Die-Casting Machines...............425

    10.4.1 Die-Mounting and Clamping Systems....425

    10.4.2 Metal-Pumping and Injection Systems....426

    10.4.3 Hot-Chamber Machines........................426

    10.4.4 Cold-Chamber Machines.......................427

    10.5 Die-Casting Dies........................428

    10.5.1 Trimming Dies..............429

    10.6 Finishing..........429

    10.7 Auxiliary Equipment for Automation.............. 431

    10.8 Determination of the Optimum Number of Cavities................. 431

    10.9 Determination of Appropriate Machine Size....436

    10.9.1 Required Machine Clamp Force...........436

    10.9.2 Shot Volume and Material Cost per Part....438

    10.9.3 Dimensional Machine Constraints......439

    10.10 Die Casting Cycle Time Estimation...................441

    10.10.1 Ladling of Molten Metal........................441

    10.10.2 Metal Injection...............441

    10.10.3 Metal Cooling................442

    10.10.4 Part Extraction and Die Lubrication....446

    10.10.5 Trimming Cycle Time............................448

    10.11 Die Cost Estimation...................449

    10.11.1 Die Set Costs..................449

    10.11.2 Cavity and Core Costs............................450

    10.11.3 Trim Die Costs............... 451

    10.12 Assembly Techniques................453

    10.13 Design Principles.......................455

    References..................458

  • 5168.49KB
  • 科研开发
  • 2020-01-02
  • 电子电气;材料分析;机械设备与装置;特种设备;机动车;医疗器械;建筑与建材;计量与测量