摘 要
C6140車床撥叉是典型的叉類零件，是機(jī)床操縱機(jī)構(gòu)的重要組成零件之一．工作時，操縱變速操縱桿，通過撥叉撥動主軸箱中的滑移齒輪在軸上移動，實(shí)現(xiàn)變速．雖然撥叉不直接參予機(jī)床的成形運(yùn)動，但它的加工質(zhì)量對機(jī)床變速機(jī)構(gòu)的安全可靠性及操作者的勞動強(qiáng)度都有一定的影響。叉類零件剛性差，易產(chǎn)生彎曲變形，加工質(zhì)量不穩(wěn)定，生產(chǎn)效率較低。因此設(shè)計科學(xué)合理的撥叉加工工藝和專用夾具，對保證零件的加工質(zhì)量、提高生產(chǎn)效率、降低成本、減輕工人的勞動強(qiáng)度都具有重要的意義。
通過撥叉零件工藝和專用夾具的設(shè)計，能夠進(jìn)一步加強(qiáng)對學(xué)生知識能力與綜合素質(zhì)的培養(yǎng)，尤其是綜合設(shè)計能力、創(chuàng)新能力、工程實(shí)踐能力的培養(yǎng)與提高以及重視經(jīng)濟(jì)和環(huán)境意識的培養(yǎng)。同時也能夠使學(xué)生在外語運(yùn)用、計算機(jī)應(yīng)用、文獻(xiàn)查閱等方面的技能得以提高，為學(xué)生走向社會后獨(dú)立從事工作打下堅實(shí)的基礎(chǔ)。

關(guān)鍵詞 C6140車床 撥叉 加工


Abstract

C6140 lathe fork fork is a typical type of parts, machine tool control is an important component of body parts of one. Work, the manipulation of variable-speed joystick, struck through the fork spindle gear box in the axis of sliding movement to achieve speed. Although the fork does not directly participate in forming the machine movement, but it is the quality of the processing speed of the machine's security and operational reliability of the labor intensity has a certain impact. Parts rigid fork poor, easily bending deformation, the processing quality of instability, low productivity. Therefore the design of scientific and rational process fork and special fixtures, machining to ensure quality, increase productivity, reduce costs, reduce labor intensity are of great significance.
Process through the fork parts and special fixture designed to further strengthen the intellectual capacity of students and the overall quality of the training, in particular the capacity of integrated design, innovation, engineering practice and improve the ability, as well as economic and environmental importance to the cultivation of awareness. At the same time so that students can use in a foreign language, computer applications, documentation, inspection and other skills can be improved for students to engage in the work of the independent community and lay a solid foundation.

Keywords Modular C6140 lathe fork processing

目 錄

摘 要 I
Abstract II
第1章 撥叉零件的工藝規(guī)程的編制 2
1.1 撥叉零件的分析 2
1.2 確定毛坯尺寸、畫毛坯——零件合圖 2
1.3 工藝規(guī)程的編制 2
第 2 章 撥叉零件的夾具設(shè)計 5
2.1 銑床夾具的設(shè)計 5
2.1.1 工件加工工藝的分析 5
2.1.2 工定位方案的確定 5
2.1.3 夾緊方案的設(shè)計 6
2.1.4 夾具對定方案的確定 7
2.1.5 定位誤差的計算 8
2.1.6 切削力與夾緊力的計算 9
2.1.7 本夾具的使用說明 10
2.2 鉆床夾具設(shè)計 10
2.2.1 工件的加工工藝分析 10
2.2.2 定位方案的確定 11
2.2.3 夾緊方案的設(shè)計 14
2.2.4 夾具對定方案的確定 15
2.2.5 定位誤差的計算 16
2.2.6 切削力與夾緊力的計算 17
2.2.7 夾具的使用說明 18
第 3 章 鉆床夾具設(shè)計 19
3.1 撥叉零件的分析 19
3.2 定位方案的確定 19
3.3 夾緊方案的設(shè)計 20
3.4 夾具對定方案的確定 22
3.5 定位誤差的計算 22
3.6 切削力與夾緊力的計算 23
3.7 夾具的使用說明 24
致謝 25
參考文獻(xiàn) 26
附錄1 27
附錄2 39
附錄3 45