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摘 要
本設(shè)計(jì)設(shè)計(jì)的是機(jī)械零件的加工工序、設(shè)計(jì)方案、計(jì)算過程以及夾具設(shè)計(jì)。機(jī)械零件的表面加工方法的選擇、加工順序的安排、工序集中與分散的處理、加工階段的劃分、機(jī)床和工藝裝備的選擇、加工余量與工序尺寸及公差的確定等都是編制工藝規(guī)程的主要問題。而夾具設(shè)計(jì)所面臨的是設(shè)計(jì)方案的確定、定位元件的選擇、定位誤差的分析與計(jì)算、夾緊力的計(jì)算、夾具體毛坯結(jié)構(gòu)及夾具元件配合的確定。還有毛坯圖、零件圖和夾具裝配圖的繪制,如何保證用技術(shù)條件是加工過程最為重要的問題,而夾具也起著至關(guān)重要的作用。
機(jī)械零件的合理結(jié)構(gòu)設(shè)計(jì)、加工工藝性設(shè)計(jì),保證零件的加工質(zhì)量,對(duì)提高生產(chǎn)效率有著重要意義,它是保證產(chǎn)品質(zhì)量的關(guān)鍵所在。通過對(duì)機(jī)械零件加工過程的設(shè)計(jì),可以發(fā)現(xiàn)一個(gè)產(chǎn)品的設(shè)計(jì)需要各個(gè)加工過程很好的配合才能成功。
關(guān)鍵詞:機(jī)械零件; 工藝; 夾具; 夾緊; 定位
Abstract
In this paper, the design of the fork processing speed, design, calculation and design of drilling jig. Fork the surface of the choice of processing methods, processing sequence of the arrangement, process centralization and decentralization of treatment, the division stage of processing, machine tools and process equipment selection, allowance and processes determine the size and tolerance of the preparation process are the main point of order problem. Fixture Design and facing the program is designed to identify, locate component selection, positioning errors of analysis and calculation, the calculation of clamping force, the specific folder structure and the rough with the determination of fixture elements. There are fork blank map, fixture assembly parts diagram and mapping how to ensure the technical conditions fork is the most important process, and fixture also plays a vital role.
Fork reasonable structural design, design process to ensure quality processing fork, to improve the productivity of great significance, it is to ensure that the key to product quality. Fork through the design process can be found in a product design process requires a good co-ordination to succeed.
Keywords: fork; technology; fixture; clamping; positioning
目 錄
摘要 1
Abstract 2
目錄 3
前言 4
第1章 零件的分析 6
1.1 生產(chǎn)綱領(lǐng)和生產(chǎn)類型的確定 6
1.2 零件的作用與分析 7
1.3 確定毛坯制造形式 8
1. 4 毛坯尺寸與機(jī)械加工工藝尺寸確定 8
1.4.1 加工余量的確定 8
1.4.2 工序尺寸及其公差的確定 9
第2章 工藝規(guī)程設(shè)計(jì) 10
2.1 定位基準(zhǔn)的選擇 10
2.2 零件表面加工方法的選擇 10
2.3 工藝方案的制定 11
2.4 切削用量與工時(shí)的計(jì)算 12
第3章 選擇加工設(shè)備及工藝裝備 35
3.1 機(jī)床的選擇 35
3.2 刀具的選擇 35
3.3 量具的選擇 35
第4章 擴(kuò)孔夾具設(shè)計(jì) 36
4.1 設(shè)計(jì)任務(wù) 36
4.2 夾緊方案的確定 40
4.3 分度裝置的確定 40
4.4 導(dǎo)向元件的選擇 41
4.5 鉆模板結(jié)構(gòu)的設(shè)計(jì) 42
4.6 夾具體的設(shè)計(jì) 42
4.7 夾具精度分析與計(jì)算 43
4.8 繪制夾具裝配圖,標(biāo)注有關(guān)尺寸及技術(shù)要求 45
結(jié)論與展望 47
致謝 48
參考文獻(xiàn) 49