A Study for Development of Plastic Worm Gears : 1st Report, Plastic Worm Gears Filled with Fiber and Solid Lubricant

Abstract

Worm gears, which undergo a great deal of slipping, produce a large amount of heat and suffer from a high degree of wear, being low in resistance to heat and wear. However, plastic worm gears are currently demanded for use in food processing equipment which should be free of oil getting into products. In the hope of developing practical morm gears from composite plastic material filled with fiber and solid lubricants, worm gears made of such plastics are produced and tests are callied out to determine degree of wear, coefficient of friction, surface roughness and changes in temperature.