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畢業(yè)設(shè)計(jì)
課 題:
總泵缸體工藝規(guī)程及專用夾具設(shè)計(jì)【加工右端面】
專 題:
專 業(yè):
機(jī)械制造及自動化
學(xué) 生 姓 名:
班 級:
學(xué) 號:
指 導(dǎo) 教 師:
完 成 時 間:
摘 要
本設(shè)計(jì)是基于總泵缸體零件的加工工藝規(guī)程及一些工序的專用夾具設(shè)計(jì)??偙酶左w零件的主要加工表面是平面及孔系。一般來說,保證平面的加工精度要比保證孔系的加工精度容易。因此,本設(shè)計(jì)遵循先面后孔的原則。并將孔與平面的加工明確劃分成粗加工和精加工階段以保證孔系加工精度?;鶞?zhǔn)選擇以總泵缸體的孔作為粗基準(zhǔn),以結(jié)合面與兩個工藝孔作為精基準(zhǔn)。主要加工工序安排是系定位加工出工藝孔。在后續(xù)工序中除個別工序外均用頂平面和工藝孔定位加工其他孔系與平面。夾具選用專用夾具,夾緊方式多選用液壓夾緊,夾緊可靠,機(jī)構(gòu)可以不必自鎖。因此生產(chǎn)效率較高。適用于大批量、流水線上加工。能夠滿足設(shè)計(jì)要求。
關(guān)鍵詞:總泵缸體類零件;工藝;夾具;
ABSTRACT
The design is based on the body parts of the processing order of the processes and some special fixture design. Body parts of the main plane of the surface and pore system. In general, the plane guarantee processing precision than that of holes machining precision easy. Therefore, this design follows the surface after the first hole principle. Plane with holes and the processing clearly divided into roughing and finishing stages of holes to ensure machining accuracy. Datum selection box input shaft and the output shaft of the supporting hole as a rough benchmark, with top with two holes as a precision technology reference. Main processes arrangements to support holes for positioning and processing the top plane, and then the top plane and the supporting hole location hole processing technology. In addition to the follow-up processes individual processes are made of the top plane and technological hole location hole and plane processing. Supported hole processing using the method of coordinate boring. The whole process of processing machine combinations were selected. Selection of special fixture fixture, clamping means more choice of pneumatic clamping, clamping reliable, institutions can not be locked, so the production efficiency is high, suitable for large batch, line processing, can meet the design requirements.
Key words: pump parts; fixture;
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目 錄
摘 要 II
ABSTRACT III
第1章 加工工藝規(guī)程設(shè)計(jì) 1
1.1 零件的分析 1
1.1.1 零件的作用 1
1.1.2 零件的工藝分析 2
1.2 總泵缸體加工的主要問題和工藝過程設(shè)計(jì)所應(yīng)采取的相應(yīng)措施 2
1.2.1 孔和平面的加工順序 2
1.2.2加工方案選擇 2
1.3 總泵缸體加工定位基準(zhǔn)的選擇 3
1.3.1 粗基準(zhǔn)的選擇 3
1.3.2 精基準(zhǔn)的選擇 3
1.4 總泵缸體加工主要工序安排 4
1.5 機(jī)械加工余量、工序尺寸及毛坯尺寸的確定 6
1.6確定切削用量及基本工時(機(jī)動時間) 7
1.7 時間定額計(jì)算及生產(chǎn)安排 17
第2章 銑右端面夾具設(shè)計(jì) 19
2.1設(shè)計(jì)要求 19
2.2夾具設(shè)計(jì) 19
2.2.1 定位基準(zhǔn)的選擇 19
2.2.2 切削力及夾緊力的計(jì)算 19
2.3定位誤差的分析 25
3.5 確定夾具體結(jié)構(gòu)和總體結(jié)構(gòu) 26
2.4夾具設(shè)計(jì)及操作的簡要說明 27
結(jié) 論 28
參考文獻(xiàn) 29
致 謝 31
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