{"data":{"fields":"term_definition","term_definition":"<div class=\"definition\">A machine element on gear-generating machines which carries the swinging base and workhead and which moves in the direction of the cradle axis. It is used to engage the work with the cutter or grinding wheel during generation and to disengage the work from the cutter or grinding wheel during withdrawal and indexing (see Postition 1 in drawing below).<\/div><div class=\"align align-image align-left\" itemscope itemtype=\"http:\/\/schema.org\/ImageObject\"><img src=\"https:\/\/www.gleason.com\/images\/DM9416.3490\/544w\/ED-159C.jpg\" alt=\"ED-159C\"><\/div>"}}