Beckhoff AL2000 Application Bedienungsanleitung PDF herunterladen (Seite 29)

Eiserstraße 5 / D-33415 Verl / Telefon 05246/963-0 / Telefax 05246/963-149

Step 3: Force analysis

Sketch a motorforce-time diagram. The motorforce depends on:

• Required accelation and deceleration forces.

• Friction forces.

• Processing contact forces (for instance when using bits or cutters).

• For vertical applications: the gravitational forces

The maximum force F

max

is the overall maximum force, driving or braking. The motor’s peak force should meet

this. Consider the square time average force F

rms

. This force should remain below the motor’s continuous force.

Case force analysis: motorforce versus time diagram:

In the case we get the following results.

Parameter

Acceleration

phase (t

)

Maximum velocity

phase (t

)

Deceleration phase

)

Settling and gripper action

phase

Dt(s) 0,1 0,167 0,1 0,5

a(m/s²) 30 0 -30 0

a,c,d

(N) 600 0 -600 0

(N) 30 30 30 0

tot

(N) 630 30 -570 0

The mean force during the cycle:

1 2 ... 24 25 26 27 28 29 30 31 32 33 34 ... 38 39

Keine Kommentare

Beckhoff AL2000 Application Bedienungsanleitung Seite 29