Free one 2 one cam

Face cams may also be used to reference a single output to two inputs, typically where one input is rotation of the cam and the other is radial position of the follower. These were once common is mechanical analog computation and special functions in control systems.A face cam that implements three outputs for a single rotational input is the stereo phonograph, where a relatively constant lead groove guides the stylus and tone arm unit, acting as either a rocker-type (tone arm) or linear (linear tracking turntable) follower, and the stylus alone acting as the follower for two orthogonal outputs to representing the audio signals.In designing the cam, the lift and the dwell angle Several key terms are relevant in such a construction of plate cams: base circle, prime circle (with radius equal to the sum of the follower radius and the base circle radius), pitch curve which is the radial curve traced out by applying the radial displacements away from the prime circle across all angles, and the lobe separation angle (LSA - the angle between two adjacent intake and exhaust cam lobes).The base circle is the smallest circle that can be drawn to the cam profile.A once common, but now outdated, application of this type of cam was automatic machine tool programming cams.Each tool movement or operation was controlled directly by one or more cams.In some applications, a single element, such as a gear, a barrel cam, or other rotating element with a flat face, may do duty as a face cam in addition to other purposes.Face cams may provide repetitive motion with a groove that forms a closed curve, or may provide function generation with a stopped groove.

A variant of the face cam provides motion parallel to the axis of cam rotation.Instructions for producing programming cams and cam generation data for the most common makes of machine were included in engineering references well into the modern CNC era.A cylindrical cam or barrel cam is a cam in which the follower rides on the surface of a cylinder.A cylinder may have several grooves cut into the surface and drive several followers.Cylindrical cams can provide motions that involve more than a single rotation of the cylinder and generally provide positive positioning, removing the need for a spring or other provision to keep the follower in contact with the control surface.

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