{"data":{"fields":"term_definition","term_definition":"<div class=\"definition\">The angle in a plane of rotation of a circular peripheral-mill cutter between the sharpening plane and a radial line from the tip of the cutting edge of the cutter blade to the cutter axis. For a face-mill cutter it is the angle between an axial plane containing the blade tip and the blade front face, measured in a plane parallel to the cutter axis and perpendicular to said axial plane (see also Axial Rake Angle).<\/div><div class=\"align align-image align-left\" itemscope itemtype=\"http:\/\/schema.org\/ImageObject\"><img src=\"https:\/\/www.gleason.com\/images\/7HU26f.45d4\/544w\/HookAngle.jpg\" alt=\"HookAngle\"><\/div><div class=\"align align-image align-left\" itemscope itemtype=\"http:\/\/schema.org\/ImageObject\"><img src=\"https:\/\/www.gleason.com\/images\/7HU26f.45d4\/544w\/HookAngle.jpg\" alt=\"HookAngle\"><\/div><div class=\"align align-image align-left\" itemscope itemtype=\"http:\/\/schema.org\/ImageObject\"><img src=\"https:\/\/www.gleason.com\/images\/7HU26f.45d4\/544w\/HookAngle.jpg\" alt=\"HookAngle\"><\/div>"}}