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

Claim 1:
2. The cam device according to claim 1, wherein:
the rotary drive device performs one of rotational driving by controlling the forward rotation, the reverse rotation, the rotation stop, and the rotation speed of the camshaft, thereby realizing a cam shape including a lift up step, a lift down step, and a pause step;
cam curve characteristics in the lift up step and the lift down step are reproduced by controlling 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;
a lift amount in the lift up step and the lift down step is reproduced by a rotation amount in the rotational motion of the cam;
an output displacement in the lift up step and the lift down step is reproduced at a position in a rotational direction in the rotational motion of the cam;
a stop time in the pause step is reproduced by a stop time of the cam; and
an operation time in the lift up step and the lift down step is reproduced by a time of the rotational motion of the cam.