Patent ID: 11920667
Assignee: NSK LTD.
Field: Mechanical elements (Mechanical engineering)
Classification: CPC F | IPC F

Claim 2:
3. The cam device according to claim 1 comprising:
a control unit that controls an actuation of the rotary drive device such that the rotary drive device performs any of rotational driving by controlling the forward rotation, the reverse rotation, the rotation stop, and the rotation speed of the camshaft, in order to realize a cam shape including a lift up step, a lift down step, and a pause step, wherein
the control unit includes:
an angular velocity and angular acceleration control unit that controls an angular velocity and an angular acceleration in the rotational motion of the cam when the cam roller passes through the lift region formed of the single constant velocity curve in order to reproduce cam curve characteristics in the lift up step and the lift down step;
a rotation amount control unit that controls a rotation amount in the rotational motion of the cam in order to reproduce a lift amount in the lift up step and the lift down step;
a position control unit that controls a position in a rotational direction in the rotational motion of the cam in order to reproduce an output displacement in the lift up step and the lift down step;
a stop time control unit that controls a stop time of the cam in order to reproduce a stop time in the pause step; and
a motion time control unit that controls a rotational motion time of the cam in order to reproduce an operation time in the lift up step and the lift down step.