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我厂在为天津减速器厂设计制造的一台加工减速器壳体的专用机床上,设计了一种采用摩擦锥离合器传动的可变工位数的回转工作台,它可以实现12、18、22、30、36、44个分度工位数。这种回转工作台的结构如图所示。在台面1上有三条互成120°的用于固定夹具的T形槽,在台面下方有三圈与中心轴8同心的定位用的锥销孔:在外圈(φ520毫米的分度圆上)均布着44个锥销孔,中圈(φ440毫米的分度圆上)均布着36个锥销孔,内圈(φ360毫米的分度圆上)均布着30个锥销孔。12、18工位采用中圈销孔定位,22工位采用外圈销孔定位。在转台体2上有三对锥形定位销分别与台面上的销孔相对应,每对定位销互成180°对称分布,
I plant in Tianjin reducer plant design and manufacture of a processing reducer housing dedicated machine designed a friction cone clutch transmission variable number of rotary table, which can achieve 12,18, 22,30,36,44 indexing number of jobs. This rotary table structure as shown. There are three T-shaped grooves for fixing the fixture on the table 1, and there are three conical pin holes concentric with the central shaft 8 below the table. In the outer ring (φ520 mm graduation circle), There are 44 taper pin holes in the middle ring (φ440 mm indexing circle) are equipped with 36 taper pin holes, the inner ring (φ360 mm indexing circle) are equipped with 30 taper pin holes. 12,18 station using the inner circle pin hole positioning, 22-position outer ring pin hole positioning. There are three pairs of conical locating pins on the turntable body 2 respectively corresponding to the pin holes on the countertop, each pair of locating pins is symmetrically distributed at 180 ° to each other,