Cam constant velocity curve driven by rotary indexing

The displacement standard curve of the indexing mechanism mainly involves three types, acceleration curve (deformed table-shaped curve, denoted by MT), deformed sine curve (denoted by MS), deformed constant velocity curve (denoted by MCV50).

The symbols in the curve are represented as follows: Vm represents the maximum speed, Am represents the maximum acceleration, Jm represents the maximum runout, the representation of the entire curve is shown when the indexing mechanism cam rotates 360 degrees (in the case of one revolution), related The speed type curve movement state and acceleration situation.

The acceleration curve of the indexing mechanism. The curve in the above figure is the acceleration curve of the indexing mechanism cam. The acceleration process of Am occupies a longer proportion in the entire operating cycle. The maximum acceleration curve of Vm in the middle is relatively steep, indicating that the indexing mechanism cam is in During operation, the speed changes quickly, so this type of curve is suitable for high-speed indexing mechanisms, and the load that can withstand is lighter.

Deformed sine curve of indexing mechanism. Deformed sine curve is the most commonly used type of the three curves. From the display in the graph, the overall curve tends to be smooth and stable. The speed change from acceleration to constant speed is one A relatively stable process. In actual operation, this type of curve is suitable for both medium-speed and high-speed operation, and it can be suitable for medium loads and above from the load, so it is like the Kemod indexing mechanism and other brands. Imported and domestic indexing mechanism, the indexing mechanism cam using this kind of curve is the mainstream of the industry.

Deformation iso-velocity curve, deformation iso-velocity curve According to the state of the curve, it can be seen that it is suitable for the indexing mechanism cam of low speed and heavy load. The curve from Am to Vm changes steeply, indicating that the acceleration is from the maximum to the maximum speed. The switch is larger. On the one hand, the running speed of the indexing mechanism cam is slow. Under heavy load, the speed and movement performance will become stable.