Follower Configuration ☑亚 死 Knife-edge follower 2. Roller follower 3. Flat-faced follower 4. Oblique flat-faced follower 5. Spherical-faced follower 0
Follower Configuration 1. Knife-edge follower 2. Roller follower 3. Flat-faced follower 4. Oblique flat-faced follower 5. Spherical-faced follower
Cam Shape Plate cam or disk cam(盘凸轮)： The follower moves in a plane perpendicular to the axis of rotation of the camshaft.A translating or a swing arm follower must be constrained to maintain contact with the cam profile. Grooved cam(槽凸轮)or closed cam: This is a plate cam with the follower riding in a groove in the face of the cam
Cam Shape 1. Plate cam or disk cam(盘凸轮): The follower moves in a plane perpendicular to the axis of rotation of the camshaft. A translating or a swing arm follower must be constrained to maintain contact with the cam profile. 2. Grooved cam (槽凸轮) or closed cam: This is a plate cam with the follower riding in a groove in the face of the cam
Cam Shape(c) 3. Cylindrical cam(圆柱凸轮)or barrel cam The roller follower operates in a groove cut on the periphery of a cylinder.The follower may translate or oscillate.If the cylindrical surface is replaced by a conical one,a conical cam results. 4. End cam(端面凸轮)： This cam has a rotating portion of a cylinder.The follower translates or oscillates,whereas the cam usually rotates.The end cam is rarely used because of the cost and the difficulty in cutting its contour. *以
Cam Shape(ct) 3. Cylindrical cam （圆柱凸轮）or barrel cam : The roller follower operates in a groove cut on the periphery of a cylinder. The follower may translate or oscillate. If the cylindrical surface is replaced by a conical one, a conical cam results. 4. End cam （端面凸轮）: This cam has a rotating portion of a cylinder. The follower translates or oscillates, whereas the cam usually rotates. The end cam is rarely used because of the cost and the difficulty in cutting its contour
Force and form closure Force closure:Gravity constraint Spring constraint: Weight constraint:the weight of the follower system is sufficient to maintain contact. Spring constraint:the spring must be properly designed to maintain contact. Form closure: A groove maintains positive action.(Grooved cam mechanism) A constant-diameter cam or conjugate cam. a constant-diameter cam A (等径凸轮) 17 a dual or conjugate cam (共轭凸轮)
Force and form closure 1. Force closure:Gravity constraint & Spring constraint: Weight constraint:the weight of the follower system is sufficient to maintain contact. Spring constraint: the spring must be properly designed to maintain contact. 1. Form closure: A groove maintains positive action.(Grooved cam mechanism) A constant-diameter cam or conjugate cam. a dual or conjugate cam (共轭凸轮) a constant-diameter cam (等径凸轮)
r a constant-diameter cam (等径凸轮)
a constant-diameter cam (等径凸轮)