液压与气压传动知识大全，400页PPT一次性讲明白（可下载）
本期机械知网为大家分享《液压与气压传动》，资料共445页，篇幅较长，这里仅截图100余页供读者参考，如需获取完整PPT文档，见文末下载方式。https://p3-tt.byteimg.com/origin/pgc-image/a385606bff1a492e85ff408493e46814?from=pchttps://p1-tt.byteimg.com/origin/pgc-image/91fba33c6f4645e7b8452dbc787f2988?from=pc
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制造设备常见的传动方式机械传动：通过齿轮、齿条、蜗轮、蜗杆等机件直接把动力传送到执行机构的传递方式。 （最早出现在17世纪）电气传动：利用电力设备，通过调节电参数来传递或控制动力的传动方式。 （出现在100年前）流体传动：（液压与气压传动大力发展于1945年，二战后期）液体传动：
[*]液压传动—利用液体静压力传递动力。
[*]液力传动—利用液体流动动能传递动力。
[*]气体传动：气压传动、气力传动
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液压与气压系统的应用及发展历史：1650年的帕斯卡原理1795年第一台水压机（英国）发展：第二次世界大战及战后目前：液压技术与传感技术、微电子技术的结合，出现诸如电液比例阀、数字阀、电液伺服液压缸等机（液）电一体化的元器件，从而使液压与气压传动在众多工业领域广泛应用，例如发达国家95％的工程机械、90％的数控加工中心、95％以上的自动线。未来：液压与计算机的结合，如CAD、CAT和计算机实时控制等。https://p6-tt.byteimg.com/origin/pgc-image/9aa47851ff514a1fad1243acb611ab5f?from=pc
1.4 液压与气压传动的优缺点优点：1）体积小、重量轻、结构紧凑（指液压传动）。2）冲击小。3）实现大范围无级调速。4）操纵方便、省力。5) 易实现过载保护。6）自润滑，寿命长。7）易实现标准化、系列化、通用化。缺点：1）不能保证准确的传动比(泄漏和可压缩性引起）。2）传动效率低，不适合远距离传动。3）对温度敏感。4）制造精度高，价格贵。5) 要有单独的能源。6）易泄漏污染（指液压系统）。7）故障不易排除。https://p6-tt.byteimg.com/origin/pgc-image/fca73f2b866d4b9db0ec4af7b6a13cce?from=pc
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