The PWS plane double enveloping toroidal worm reducer (GB/T16449—1996), whose worm tooth surface uses a plane as the mother surface, through relative circular motion, envelops the tooth surface of the toroidal worm, and then uses the worm tooth The surface is the generatrix, which envelops the tooth surface of the worm gear through relative motion, which is called a plane double-envelope toroidal worm pair.It includes three types: PWU, PWO, and PWS, which are suitable for reduction transmission of machinery and equipment in metallurgy, mining, lifting, transportation, petroleum, chemical, construction and other industries.
1. Center distance
The center distance a of PW type worm reducer is shown in Table 1.
Table 1 Center distance a /mm
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The first series
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80 100 125 160 200 250 315 400 500 630
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Second series
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140 180 225 280 355 450 560 710
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Note: The first series is preferred.
2. Nominal transmission ratio
The nominal transmission ratio iN of PW type worm reducer is shown in Table 2.
Table 2 Nominal transmission ratio iN
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The first series
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10 12.5 16 20 25 31.5 40 50 63
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Second series
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14 18 22.4 28 35.5 45 56
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PWS包络蜗杆减速机—蜗杆在蜗轮之侧平面二次，型号包括PWS80、PWS100、PWS125、PWS140、PWS160、PWS180、PWS200、PWS225 PWS250、PWS280、PWS315、PWS355、 PWS400、PWS450、PWS500、PWS560、PWS630、PWS710