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FANUC Series 16i/18i-MA Electronic Gear Box Automatic phase synchronization Additional Manual Page 6

Additional Manual
FANUC Series 16i/18i -MA
SPECIFICATIONS FOR
ELECTRONIC GEAR BOX
AUTOMATIC PHASE SYNCHRONIZATION
EDT. DATE DESIG.
DESCRIPTION
PAGE
6 / 14
A – 77934E
NO.
TITLE
01
1999.OCT.29
NEWLY
1. Move the workpiece axis to the position that corresponds to that of the
one-rotation signal of the spindle.
2. Specify G81R2 to start synchronization.
When G81R2 is specified, the workpiece axis is accelerated with the
acceleration according to the acceleration rate set in the parameter (No.2135
,2136 or No.4384,4385). When the synchronization speed is reached, phase
synchronization is performed automatically. Upon the completion of phase
synchronization, synchronization mode signal SYNMOD is set to 1, and the
G81R2 block is terminated.
3. For cancellation, specify G80R2 while the tool is moved away from the
workpiece.
4. When G80R2 is specified, the synchronization mode signal is set to 0, and
deceleration according to the acceleration rate set in the parameter
(No.2135,2136 or No.4384,4385) is started immediately. When the speed is
reduced to 0, the G80R2 block is terminated.
Caution) In automatic phase synchronization, specify the speed in parameter No.7776
and the movement direction in parameter PHD, bit 7 of No. 7702.
In phase synchronization, rapid-traverse linear acceleration/deceleration (with
the time constant specified in parameter No. 1620) is performed.
The workpiece-axis speed is obtained by superposing the speed in automatic
phase synchronization onto the speed corresponding to spindle rotation.
In consideration of this superposition, specify a position deviation limit in
parameter No. 1828.
Note1) The one-rotation signal used for automatic phase synchronization is issued not
by the spindle position coder but by the separate pulse coder attached to the
spindle and used to collect EGB feedback information. This means that the
orientation position based on the one-rotation signal issued by the spindle
position coder does not match the position used as the reference for the
workpiece axis when establishing phase synchronization for automatic phase
synchronization based on G81R2.
Moreover, the one-rotation signal of the separate pulse coder must be turned
on for each rotation of the spindle.
Note2) With the use of parameter No.7777, the position at which the phase of the
workpiece axis is matched can be shifted from the position corresponding
to the one-rotation signal in automatic phase matching.
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Contents Summary of FANUC Series 16i/18i-MA Electronic Gear Box Automatic phase synchronization Additional Manual

  • Page 1FANUC Series 16i/18i -MA Electronic Gear Box Automatic phase synchronization Specifications Contents 1. Outlines ---------------------------------------------------------------------------------- 2 2. Operations ------------------------------------------------------------------------------ 3 2.1. Ac
  • Page 21. Outlines In the electronic gear box (EGB), when synchronization start or cancellation is specified, synchronization is not started or canceled immediately. Instead, acceleration/deceleration is executed first. Therefore, synchronization can be started or canceled while the spindle is rotating. Al
  • Page 32. Operations 2.1 Acceleration/deceleration type Format G81 T_ L_ R1; Synchronization start G80 R1; Synchronization end T : Number of teeth (range of valid settings: 1-1000) L : Number of hob threads (range of valid settings: -21 to +21, excluding 0) When L is positive, the direction of rotation abo
  • Page 41. Specify G81R1 to start synchronization. When G81R1 is specified, acceleration according to the acceleration rate set in the parameter (No.2135,2136 or No.4384,4385) is performed on the workpiece axis (slave axis). Once the synchronization feedrate is reached, synchronization mode signal SYNMOD is
  • Page 52.2 Acceleration/deceleration plus automatic phase synchronization type Format G81 T_ L_ R2; Synchronization start G80 R2; Synchronization end T : Number of teeth (range of valid settings: 1-1000) L : Number of hob threads (range of valid settings: -21 to +21, excluding 0) When L is positive, the di
  • Page 61. Move the workpiece axis to the position that corresponds to that of the one-rotation signal of the spindle. 2. Specify G81R2 to start synchronization. When G81R2 is specified, the workpiece axis is accelerated with the acceleration according to the acceleration rate set in the parameter (No.2135
  • Page 7Note3) In automatic phase synchronization, when a synchronization command is issued again in a synchronization state, movement about the workpiece axis is performed such that the position corresponding to the one-rotation signal of the spindle matches the position about the workpiece axis specified
  • Page 82.3 Program example ・ Acceleration/deceleration type M03 ; Clockwise spindle rotation command G81 T_ L_ R1 ; Synchronization start command G00 X_ ; Positions the workpiece at the machining position. Machining in the synchronous state G00 X_ ; Retract the workpiece from the tool. G81 T_ L_ R1 ; Synch
  • Page 92.4 About the direction of the rotation (This item is for spindle EGB.) The EGB automatic phase synchronization is made on the premise that the rotation of the slave axis is the same direction as the master axis. Refer to the following chart. + Command + Kp/S Sensor Motor Spindle + Direction - [Mast
  • Page 103. Parameters #7 #6 #5 #4 #3 #2 #1 #0 7702 PHD PHS [Data type] Bit PHS Specifies whether to perform acceleration/deceleration when EGB synchronization is started or canceled if there is no R command in a G81/G80 block. 0: Do not perform acceleration/deceleration when EGB synchronization is started o
  • Page 11#7 #6 #5 #4 #3 #2 #1 #0 4000 RETRN ROTA2 (This parameter is for spindle EGB.) [Data type] Bit ROTA2 This bit must be set to “0 (the rotary direction of the spindle is CCW when the command sign is the positive)”. RETRN If the master axis is driven by the speed control during the EGB mode, this bit(th
  • Page 12#7 #6 #5 #4 #3 #2 #1 #0 4016 RFCHK3 (This parameter is for spindle EGB.) [Data type] Bit RFCHK3 When the EGB master axis is driven by speed control mode, if you use automatic phase synchronization, you should set RFCHK3 of EGB master axis to “0”. Maximum speed in workpiece-axis acceleration/decelera
  • Page 13Time constant related to the maximum speed in workpiece-axis 4385 acceleration/deceleration for the electronic gear box automatic phase synchronization function for the function of Spindle EGB. (This parameter is for spindle EGB.) Time constant related to the maximum speed in workpiece-axis 2136 acc
  • Page 144. Signals 7 6 5 4 3 2 1 0 F065 SYNMOD Synchronization mode signal SYNMOD [Classification] Output signal [Function] Confirmation of the EGB synchronization [Operation] The signal becomes “1” when : : The EGB synchronization is active. The signal becomes “0” when : : The EGB synchronization is cancel