齒輪泵泵體的加工工藝與專用夾具設計

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。

泵體加工工藝規程及其銑削、鉆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

Gear pump body process and special fixture design

Abstract

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.

Body process planning and drilling fixture was designed to include part machining process design, process design, and dedicated fixture design of three parts. In process design, analysis of the part must first understand the parts of the process re-engineering the structure of a blank, and select a good part of the processing of the base to design parts process route; followed by the various working steps on the part of the procedures for the size of the calculation, the key is to determine the various stages of work out of process equipment and cutting consumption; then dedicated fixture design, selection of design out of all the component parts fixture, such as the positioning components, clamping components, guiding elements, the specific folder connection with the machine parts and other components; calculate the positioning fixture positioning error generated, analysis fixture structure is reasonable and deficiencies, and attention to improving the design in the future.

Key words：The craft、the working procedure、the cutting specifications?????????????clamp、the localization

目錄

摘要

Abstract

引言?......................................................................................................................

第1章 緒論 1

1.1?機械加工工藝概述及發展趨勢 1

??1.2 機床夾具的概述及發展趨勢....................................................................1 ?????

第2章 零件的分析 3

2.1?零件的作用及工藝分析 3

2.2?零件的生產綱領 4

第3章 確定毛坯類型，繪制毛坯件圖 5

3.1?確定毛坯尺寸公差和機械加工余量 5

3.2?繪制毛坯簡圖 6

第4章?工藝設計.................................................................................................7

?4.1?定位基準的選擇 7

????4.1.1?精基準的選擇 7

4.1.2?粗基準的選擇 8

?4.2工序的合理組合..........................................................................................9

?4.3加工階段的劃分..........................................................................................9

?4.4工藝路線.....................................................................................................10

?4.5加工設備及工藝裝備的選用.....................................................................11

?4.6加工余量、尺寸公差的確.........................................................................12

?4.7切削用量及時間定額的算.........................................................................13

第5章 專用夾具設計 42

?5.1定位方案及定位裝置的設計計算............................................................42

?5.1.1?定位方案的確定 42

?5.1.2?定位誤差的分析計算 42

?5.2?夾緊方案的設計及裝置的設計計算

?5..2.1?夾具方案的確定

??5.2.2?夾緊力大小的分析計算

5.3?夾具的總體設計

5.3.1?定向鍵與對刀裝置設計

5.3.2?夾具設計及操作簡要說明

結論

參考文獻

致謝

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總結

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