Mitsubishi Electric MELSERVO-J4 Series Instruction Manual page 570

12. APPLICATION OF FUNCTIONS
Setting example: When the sheet length is 200.0 mm, the circumferential length of the rotary knife
axis (synchronous axis length) is 600.0 mm, and the sheet synchronous width is 10.0 mm
Cycle length of the rotary
knife axis
(600.0 mm)
Sheet synchronous width
(10.0 mm)
Sheet length
(200.0 mm)
(5.0 mm)
Cam axis one cycle
current value
Rotary knife axis (cam axis)
speed
Synchronous speed
(Sheet feed speed)
Cam stroke ratio
(Cam data
100%
created by
(600.0 mm)
users)
0°
(0.0 mm)
Fig. 12.1.2 Driving example
Home position
0°
Rotary
knife axis
(Cam axis)
Sheet feeding
(5.0 mm)
Sheet length
(200.0 mm)
t
t
t
180° 360°
(100.0 mm) (200.0 mm)
12 - 29
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Basic settings require to use the simple cam
function
Item Setting
Operation mode Select "Point table
selection ([Pr. method".
PA01])
Simple cam Enable the simple cam
function setting function.
([Pr. PT35])
Device setting Assign CAMC (Cam
control command input),
CAMS (Output in cam
control), and CI0 to CI3
(Cam No. selection 0 to 3)
with I/O setting parameters
([Pr. PD_ _ ]).
When the conveyor axis (main axis) feeds a
sheet by the set length, the rotary knife makes
one rotation (360 degrees) to cut the sheet. Set
the following items as follows.
Item Setting
Cam axis one Set the sheet length.
cycle length
([Cam control
data No. 48])
Cam stroke Set the rotation amount
amount ([Cam per rotation in "degree".
control data No.
51])
Synchronous Set the unit of the sheet
encoder axis unit length.
([Cam control
data No. 14])
Unit of rotary Set "degree" as the unit of
knife axis ([Pr. position data.
PT01])
Cam data Create the cam data with
the operation pattern
shown in Fig. 12.1.2.
Set the following items as follows to use the
encoder following function.
Item Setting
Main shaft input Select the synchronous
axis selection encoder axis.
([Cam control
data No. 30])
Synchronous Refer to the synchronous
encoder axis unit encoder axis unit
multiplication: conversion gear setting in
Numerator section 12.1.7 (3) (b).
([Cam control
data No. 15])
Synchronous
encoder axis unit
multiplication:
Denominator
([Cam control
data No. 16])
Setting value
"1006"
"_ 1 _ _"
Refer to
section
7.2.4.
Setting value
200.000
360.000
0 (mm)
"_ 2 _ _"
Setting value
2
Refer to
section
12.1.7 (3)
(b).