Seek answers from the great god of mechanical design

(1) error, the cam mechanism is not only used for automatic control of machinery, but also used for converting motion and transmitting power.

(2) Correct, the spiral follower can realize complex motion laws and can be used in high-speed and medium-load situations.

(3) Wrong, the cam mechanism is usually a low pair mechanism, because a cam only drives one follower.

(4) Wrong, the motion law of the follower is related to the steering of the cam.

(5) Wrong, the self-locking of cam mechanism is usually not caused by insufficient driving torque, but by friction or the shape of cam.

(6) Wrong. The greater the pressure angle of the cam mechanism, the better the force transmission performance of the mechanism.

(7) wrong. Flexible impact usually occurs when the follower is in equal acceleration and deceleration motion, rather than in equal acceleration and deceleration motion.

(8) Wrong. The pressure angle of disc cam mechanism with flat-bottomed follower is not always constant, but changes with the change of cam angle.

(9) Correct. The greater the pressure angle of the cam mechanism, the greater the radius of the cam to the follower, and the force transmission performance of the mechanism usually becomes worse.

(10) correct. Roller followers cannot be used for cam profiles with concave parts to avoid motion deformation.

(1 1) Correct. The sudden change and flexible impact of the follower speed can be avoided by adopting the laws of equal acceleration and equal deceleration.

(12) error. Generally speaking, the allowable lift pressure angle of cam mechanism is usually greater than the return pressure angle.

(13) correct. By selecting the appropriate cam profile, the cam mechanism can make the follower obtain various predetermined motion laws.

(14) correct. When the follower moves according to the law of constant velocity, its acceleration is zero, so the cam mechanism is often designed according to the law of constant velocity of the follower.

(15) Correct, the conductive radius of theoretical contour curve of disk cam with convex roller follower is usually larger than that of actual contour curve of corresponding point.