Beijing RichAuto S&T Co., Ltd.
Forging ahead and determined to win 70
9.6
Calculate pulse equivalent
9.6.1
Stepper driver
1.
linear axis
Unit
:
pul/mm
Formula
=
pulses per revolution / distance per revolution
Pulses per revolution formula: (360 °/stepper angle)* Driver subdivision
Some stepper drivers mark pulse number directly.
Distance/r formula
:
►
Screw drive
=
screw pitch*mechanical transmission ratio
►
Rack
(
straight
)
drive = rack module*gear teeth number*π*mechanical transmission ratio
►
Rack
(
helical
)
drive = rack module*gear teeth number*π*mechanical transmission ratio/cos
►
Pulley&belt drive = π*pulley diameter*mechanical transmission ratio
Screw drive
:
pulse =
360
°
Stepper angle
∗
Driver subdivision
Screw pitch
∗
transmission ratio
Driver nameplate 1 Driver nameplate
2
Motor nameplate
Screw pitch(above picture): The distance that the nut moves when the ball screw makes one
rotation.
Transmission ratio: The speed ratio or angular velocity ratio of the capstan and the driven wheel.
stepper angle=1.8
°
RichAuto