{"data":{"fields":"term_definition","term_definition":"<div class=\"definition\">Uniform lead (or higher order motion) in the direction of the axis of a rotating member. A helical motion mechanism displaces the workpiece in the direction of the cradle axis, towards or away from the cutter, during generation. It is used to control bias and profile curvature on both sides of a tooth space when a pinion is completed with an alternate blade cutter. Gleason Duplex Helical and HELIXACTTM cutting processes require the use of helical motion.<\/div><div class=\"align align-image align-left\" itemscope itemtype=\"http:\/\/schema.org\/ImageObject\"><img src=\"https:\/\/www.gleason.com\/images\/h6fcHj.ea77\/544w\/HelicalMotion.jpg\" alt=\"HelicalMotion\"><\/div><div class=\"align align-image align-left\" itemscope itemtype=\"http:\/\/schema.org\/ImageObject\"><img src=\"https:\/\/www.gleason.com\/images\/h6fcHj.ea77\/544w\/HelicalMotion.jpg\" alt=\"HelicalMotion\"><\/div><div class=\"align align-image align-left\" itemscope itemtype=\"http:\/\/schema.org\/ImageObject\"><img src=\"https:\/\/www.gleason.com\/images\/h6fcHj.ea77\/544w\/HelicalMotion.jpg\" alt=\"HelicalMotion\"><\/div><div class=\"align align-image align-left\" itemscope itemtype=\"http:\/\/schema.org\/ImageObject\"><img src=\"https:\/\/www.gleason.com\/images\/h6fcHj.ea77\/544w\/HelicalMotion.jpg\" alt=\"HelicalMotion\"><\/div>"}}