上蓋的工工藝規(guī)程及鉆6-Ф4.5孔的夾具設計
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- 上蓋的工工藝規(guī)程及鉆6-Ф4.5孔的夾具設計
摘 要
本次設計內容涉及了機械制造工藝及機床夾具設計、金屬切削機床、公差配合與測量等多方面的知識。
上蓋加工工藝規(guī)程及其鉆6-Φ4.5孔的夾具設計是包括零件加工的工藝設計、工序設計以及專用夾具的設計三部分。在工藝設計中要首先對零件進行分析，了解零件的工藝再設計出毛坯的結構，并選擇好零件的加工基準，設計出零件的工藝路線；接著對零件各個工步的工序進行尺寸計算，關鍵是決定出各個工序的工藝裝備及切削用量；然后進行專用夾具的設計，選擇設計出夾具的各個組成部件，如定位元件、夾緊元件、引導元件、夾具體與機床的連接部件以及其它部件；計算出夾具定位時產生的定位誤差，分析夾具結構的合理性與不足之處，并在以后設計中注意改進。
關鍵詞：工藝、工序、切削用量、夾緊、定位、誤差。
ABSTRCT
This design content has involved the machine manufacture craft and the engine bed jig design, the metal-cutting machine tool, the common difference coordination and the survey and so on the various knowledge.
The reduction gear box body components technological process and its the processing ￠ 140 hole jig design is includes the components processing the technological design, the working procedure design as well as the unit clamp design three parts. Must first carry on the analysis in the technological design to the components, understood the components the craft redesigns the semi finished materials the structure, and chooses the good components the processing datum, designs the components the craft route; After that is carrying on the size computation to a components each labor step of working procedure, the key is decides each working procedure the craft equipment and the cutting specifications; Then carries on the unit clamp the design, the choice designs the jig each composition part, like locates the part, clamps the part, guides the part, to clamp concrete and the engine bed connection part as well as other parts; Position error which calculates the jig locates when produces, analyzes the jig structure the rationality and the deficiency, and will design in later pays attention to the improvement.
Keywords: The craft, the working procedure, the cutting specifications, clamp, the localization, the error
目 錄
序言…………………………………………………………………1
一. 零件分析 ……………………………………………………2
1.1 零件作用 ………………………………………………2
1.2零件的工藝分析 …………………………………………2
二. 工藝規(guī)程設計…………………………………………………3
2.1確定毛坯的制造形式 ……………………………………3
2.2基面的選擇傳 ……………………………………………3
2.3制定工藝路線 ……………………………………………3
2.4機械加工余量、工序尺寸及毛坯尺寸的確定 …………5
2.5確定切削用量及基本工時………………………………6
三 專用夾具設計………………………………………………12
3.1問題的提出………………………………………………12
3.2定位基準的選擇…………………………………………12
3.3定位元件的設計…………………………………………12
3.4切削力及夾緊力計算……………………………………12
3.5定位誤差分析……………………………………………13
3.6夾具設計及操作簡要說明………………………………13
總 結………………………………………………………………16
致 謝………………………………………………………………17
參考文獻 …………………………………………………………18
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