小半徑彎管件成形工藝與模具設(shè)計(jì)（本科畢業(yè)論文設(shè)計(jì)）



摘    要


汽車、摩托車上大量應(yīng)用著各種管件。隨著技術(shù)的發(fā)展，各種管件的形狀越來(lái)越復(fù)雜，例如小半徑彎管件就是一個(gè)難點(diǎn)問(wèn)題。本設(shè)計(jì)主要是根據(jù)工廠提供的圖紙等技術(shù)資料，要求按照實(shí)際生產(chǎn)中沖壓模具的設(shè)計(jì)方式完成小半徑管件彎曲、局部成形的工藝與模具設(shè)計(jì)；在計(jì)算機(jī)上完成主要的設(shè)計(jì)內(nèi)容，包括三維造型，并繪制裝配圖和零件圖等相應(yīng)圖紙。本文論述了彎曲工藝的性質(zhì)、應(yīng)用，以及該行業(yè)的現(xiàn)狀和發(fā)展趨勢(shì)，對(duì)小半徑彎管件成形工藝與模具設(shè)計(jì)進(jìn)行了分析、計(jì)算，最后通過(guò)綜合分析和比較，確定了最佳的彎曲工藝方案，并對(duì)其中的兩個(gè)重要的工步進(jìn)行模具設(shè)計(jì)及模具零件的拆繪。在設(shè)計(jì)與繪圖過(guò)程中，運(yùn)用到了工程制圖、沖壓工藝與模具設(shè)計(jì)、機(jī)械制造、工程材料等知識(shí)。


 


關(guān)鍵詞：小半徑彎管，彎曲模具設(shè)計(jì)，擠壓模具設(shè)計(jì)，模具制造工藝




Abstract

A large number of various pipes are used in vehicles, the development of technology, the shape of various pipes is increasingly complex,for example, one of the problems is to bend pipes with small radiu .This study is based on drawings or other technical information mainly provided by the factory,in accordance with the requirements of the actual production of stamping dies to complete the design of small radius of pipe bending,the process of part forming and die design; With a computer to complete the main design, including three-dimensional modeling, and the mapping assembly , parts, and other corresponding drawings. This article narrates the nature of the bending process, applications, and the industry's current situation and development trend , small bend radius of forming process and die design are analysised, the final adoption of comprehensive analysis and comparison to determine the best bending process programme.Two of the important steps for mould design and die parts are demolied. In the process of design and graphics, acknowledge are applied ,such as the engineering drawing, stamping process and die design, machinery manufacturing, engineering materials, and other knowledge.




Key words：Small bend radius, Bending die design, Extrusion die design, Mould Manufacturing Technology


 


目   錄


中文摘要 Ⅰ

英文摘要 Ⅱ

1緒論 1

  1.1 管材成形發(fā)展現(xiàn)狀 1

    1.1.1管材彎曲 1

1.1.2 管材切割 1

1.1.3管材脹形………………………………………………………………………………2.

  1.2 管材成形發(fā)展趨勢(shì) 2

    1.2.1 管材彎曲研究發(fā)展的趨勢(shì) 2

1.2.2管材塑性成形的發(fā)展趨勢(shì) 2

1.3 設(shè)計(jì)目的及要求……………………………………………………………………………3.

1.3.1設(shè)計(jì)目的 3

1.3.2設(shè)計(jì)任務(wù) 3

1.3.3設(shè)計(jì)要求 3

2 零件成形性分析 4

  2.1零件成形性分析 4

     2.1.1結(jié)構(gòu)及尺寸分析 4

     2.1.2材料分析 5

   2.2工藝分析 5

     2.2.1可成形性分析 5

 3 工藝設(shè)計(jì)及計(jì)算 7

  3.1毛坯尺寸的計(jì)算 7

  3.2工藝方案的確定和選擇 8

  3.3各工序的沖壓力計(jì)算和設(shè)備選擇 10

    3.3.1彎曲成形力的計(jì)算 10

    3.3.2擠壓成形力的計(jì)算 11

  3.4沖壓工藝卡片 12

 4 模具設(shè)計(jì) 13

  4.1彎曲模 14

    4.1.1工作過(guò)程 14

    4.1.2工作部分零件 14

 4.1.3彈簧的選用 16

 4.1.4頂桿及下模座 16

 4.1.5尺寸校核 16

 4.2擠壓成形模 17

    4.2.1工作過(guò)程 17

    4.2.2工作部分零件 17

    4.2.3滑塊及滑塊零件的結(jié)構(gòu)設(shè)計(jì) 19

    4.2.4彈簧的選用 19

    4.2..5橡膠的選用及計(jì)算 19

    4.2.6斜鍥及斜鍥固定板的設(shè)計(jì) 19

    4.2.7卸料螺釘及小導(dǎo)柱的設(shè)計(jì) 20

    4.2.8凸模固定板的設(shè)計(jì) 20

    4.2.9 導(dǎo)柱、導(dǎo)套的選擇 20

    4.2.10模架的選擇 20

 4.3模具材料的選用 20

    4.3.1彎曲模具材料的選用 20

    4.3.2擠壓模具材料的選用 20

 4.4模具熱處理 21

 4.5模具零件表面粗糙度及加工配合精度 21

 5擠壓模具凸模的制造工藝 22

  5.1模具制造特點(diǎn) 22

  5.2模具制造工藝 22

6 結(jié)論 24

7感謝詞 25

參考文獻(xiàn) 26