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数控机床横向进给系统毕业设计说明书.doc

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本科毕业设计 题目: CJK6140数控车床横向进 给系统设计 学生姓名 学 号 教学院系 机电工程学院 专业年级 指导教师 职 称    单  位 西南石油大学 摘 要 鉴于我国目前资金短缺,工业生产规模小的特点,用较小的资金迅速改变机械工业落后的生产面貌,使之尽可能地提高自动化程度,保证生产质量,减轻劳动强度,提高经济效益,而实现这一任务有效的、基本的途径就是普及以及应用经济型数控机床。 经济型数控车床是特定时期需求的产物,对于发展中国家工业重工化阶段的初期,经济型数控车床具有较优越的性价比,价格低廉,设备费用投入较少,可以广泛的满足企业发展初期的需要,受到企业,特别是受到民营企业的欢迎。对一个经济还不太发达的国家来说,经济型数控车床既经济又合理,符合我国国情。 经济型数控车床CJK6140采用由8031芯片为主构成开环控制系统,其进给系统是步进电机通过消隙齿轮箱,带动滚珠丝杠转动,从而实现工作台沿机床导轨的水平移动。经济型数控车床CJK6140具有加工精度高,稳定性好,生产效率高,工作可靠,价格低等优点。 机床数控化改造可以加工出传统机床加工不出来的曲线、曲面等复杂的零件。数控机床比传统机床有以下突出的优越性,由于计算机可以瞬时准确地计算出每个坐标轴瞬时应该运动的运动量,因此可以复合成复杂的曲线或曲面;可以实现加工的自动化,而且是柔性自动化,从而效率可比传统机床提高3~7倍;由于计算机有记忆和存储能力,可以将输入的程序记住和存储下来,然后按程序规定的顺序自动去执行;加工零件的精度高,尺寸分散度小,使装配容易,不再需要修配;可实现多工序的集中,减少零件 在机床间的频繁搬运;拥有自动报警、自动监控、自动补偿等多种自律功能,因而可实现长时间无人看管加工。 关键词:车床改造,数控化,进给系统,滚珠丝杠,步进电机 Abstract With the development of social production science and technology. It is essential for a machine not only to have high precision and high production and high production capability, but also to adjust to the rapid change of production. In this condition, numerical control machine was invented and put into practice. The economic number controls the lather is a particular and period and demanding outcome, turn the initial stage of stage for the heavy work of the developing country industry, the economic number controls the sex price that the lather has the superiority of compare to compare, the price is cheap, the equipments expenses devotion is less, can the extensively contented business enterprise develop the demand of the initial stage, being subjected to the business enterprise, being welcome among the run by private capital especially.To an economy still not that flourishing nation to say, the economic number controls the lather since economy and then reasonable, match the our country state of the nation. The economic NC machine-CJK6140 adopts open loop control system. Through rotation of the lead screw, this is driven by a gear box, the working table moves in parallel along
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