63.5TD2HGC47MC1100M1100
63.5TC2HGC19MC1100M1100
63.5HB2HGC18MC1100M1100
63.5J2HGC1144MC1100C1144
63.5HH2HGC1144MC1100C1144
63.5DD2HGC24MC1100C1144
63.5JJ2HGC34MC1100C1144
63.5JB2HGC44MC1100C1144
63.5J2HGC17MC1100C1144
63.5J2HGC28MC1100C1144
63.5SBa2HGC29MC1100C1144
63.5TD2HGC29MC1100C1144
63.5HB2HGC27MC1100C1144
63.5DD2HGC38MC1100C1144
63.5JB2HGC39MC1100C1144
63.5DD2HGC37MC1100C1144
63.5DD2HGC48MC1100C1144
63.5H2HGC49MC1100C1144
63.5JJ2HGC47MC1100C1144
63.5BB2HGC19MC1100C1144
63.5SBa2HGC18MC1100C1144
63.5TC2HGC18MC1100C1144
63.5JJ2HGC1144MC1100C1100
63.5TC2HGC1144MC1100C1100
63.5HH2HGC24MC1100C1100
63.5H2HGC34MC1100C1100
63.5HB2HGC44MC1100C1100
63.5H2HGC17MC1100C1100
63.5JJ2HGC28MC1100C1100
63.5JB2HGC29MC1100C1100
63.5BB2HGC27MC1100C1100
63.5TC2HGC27MC1100C1100
63.5HH2HGC38MC1100C1100
63.5TB2HGC39MC1100C1100
63.5HH2HGC37MC1100C1100
63.5TB2HGC48MC1100C1100
63.5TB2HGC49MC1100C1100
63.5H2HGC47MC1100C1100
63.5JJ2HGC19MC1100C1100
63.5J2HGC18MC1100C1100
63.5BB2HGC49MC1100C1100
63.5C2HGCP14M1100M1144
63.5SBa2HGC24M1100M1144
63.5TD2HGC24M1100M1144
63.5TB2HGC34M1100M1144
63.5TC2HGC44M1100M1144
63.5HH2HGC17M1100M1144
63.5HB2HGC28M1100M1144
63.5H2HGC29M1100M1144
63.5JB2HGC27M1100M1144
63.5SBa2HGC38M1100M1144
63.5TD2HGC38M1100M1144
1000psi=68.95bar≈7MPa (欧美等国家习惯使用psi作单位,psi英文全称为Pounds per square inch。P是磅pound,S是平方square,I是英寸inch。)
1kgf/cm^2= 0.1MPa(kgf:千克力,是工程单位制中力的主单位,是一千克物质在地球上受到的地心引力)
在中国,我们一般把压力用“公斤”描述(而不是“斤”),体单位是“kg/cm^2”,一公斤压力就是一公斤的力作用在一个平方厘上。
㈠.机械
1.齿轮传动:
1)分类:平面齿轮传动、空间齿轮传动。
2)特点:
优点
适用的圆周速度和功率范围广;传动比准确、稳定、效率高。;工作可靠性高、寿命长。;可实现平行轴、任意角相交轴和任意角交错轴之间的传动
缺点
要求较高的制造和安装精度、成本较高。;不适宜远距离两轴之间的传动。
3)渐开线标准齿轮
基本尺寸的名称有齿顶圆;齿根圆;分度圆;摸数;压力角等。
2.涡轮涡杆传动:
适用于空间垂直而不相交的两轴间的运动和动力。
1)特点:
优点传动比大。;结构尺寸紧凑。
缺点轴向力大、易发热、效率低。;只能单向传动。
涡轮涡杆传动的主要参数有:模数;压力角;蜗轮分度圆;蜗杆分度圆;导程;蜗轮齿数;蜗杆头数;传动比等。
3.带传动:
包括 主动轮、从动轮 ;环形带
1)用于两轴平行回转方向相同的场合,称为开口运动,中心距和包角的概念。
2)带的型式按横截面形状可分为平带、V带和特殊带三大类。
3)应用时重点是:传动比的计算;带的应力分析计算;单根V带的许用功率。
4)带传动的特点: