FANUC Series 16i/18i-MB/18i-MB5 Small-Hole Peck Rigid Tapping, Specifications Additional Manual Page 13

Additional Manual
2002/08/19 T.Inagaki
3. Limitations
Axis switching
Before the tapping axis is changed, the canned cycle must be canceled. If the
tapping axis is changed in rigid mode, P/S alarm (No.206) is issued.
S command
Specifying a rotation speed exceeding the maximum speed for the gear used
causes P/S alarm (No.200).
Distribution amount for the spindle
[For an analog spindle control circuit]
Upon specifying a speed command requiring more than 4096 pulses, in
detection units, within 8 ms, a P/S alarm (No.202) is issued.
[For a serial spindle]
Upon specifying a speed command requiring more than 32767 pulses, in
detection units, within 8ms, a P/S alarm (No.202) is issued.
F command
If a value exceeding the upper limit of cutting feedrate is specified, P/S alarm
(No.011) is issued.
Unit of F command
Metric input Inch input Remarks
G94 1mm/min 0.01inch/min Decimal point programming allowed
G95 0.01mm/rev 0.0001mm/rev Decimal point programming allowed
M29 (M-code for rigid tapping mode specification)
If an S command and axis movement are specified between M29 and G84,
P/S alarm (No.203) is issued.
If M29 is specified in a tapping cycle, P/S alarm (No.204) is issued.
P/Q
Specify P and Q in a block that performs drilling. If they are specified in a
block that does not perform drilling, they are not stored as modal data.
When Q is not specified, the peck rigid-tapping, which only an
over-torque signal is concerned, is specified. If an over-torque signal is
not detected, the action of small-hole peck rigid-tapping is as same as it of
normal rigid tapping.
When Q0 is specified, the small-hole peck rigid-tapping is not performed.
A-78641EN
FANUC Series 16i/18i–MB/18i–MB5
Small-hole peck rigid tapping
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Drawing No.
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Contents Summary of FANUC Series 16i/18i-MB/18i-MB5 Small-Hole Peck Rigid Tapping, Specifications Additional Manual

  • Page 1FANUC Series 16i/18i-MB/18i-MB5 Small-hole peck rigid tapping Specifications 1. Specifications .......................................................................................................................................... 2 Outline ........................................................
  • Page 21. Specifications Outline Tapping a deep hole in rigid tapping mode may be difficult because the cutting resistance increases due to chips sticking to the tool or so on. By using this function, when the overload torque detection signal (X4#7 or G275#7) is detected, rigid tapping retraction is begun.
  • Page 3Format The mode for the small-hole peck rigid tapping cycle is selected when the M-code in parameter 13410 is specified. The cycle can start by specifying G84(normal tapping) or G74(reverse tapping) in this mode. This mode is canceled when G80 is specified or when a reset occurs. G84 (or G74) X_ Y_
  • Page 4Explanations Component operation of the cycle Positioning along X-axis and Y-axis Positioning at point R along the Z-axis (Cutting is performed with depth Q, cutting is performed to Z-point, or the overload torque detection signal (X4#7 or G275#7) is detected.) (The cutting override is effective if
  • Page 5Thread lead - In feed per minute mode, the thread lead is obtained from the expression, feedrate ÷ spindle speed. - In feed per revolution mode, the thread lead equals the feedrate speed. Tool length compensation If a tool length compensation (G43,G44, or G49) is specified in the canned cycle, the o
  • Page 6Changing the tapping conditions In a single G84/G74 cycle, tapping override is changed for each tapping operation (advance→drilling→retraction). (When 13400#0 and #1 are both set to '0', override value is not changed.) In parameters, 13411 and 13412, specify the respective rates of change applied wh
  • Page 7If the tapping override becomes smaller than the rate specified in parameter 13413, the tapping override is not changed. The cutting override can be increased up to 200(%). Custom macro interface The number of retractions made during the rigid-tapping and the number of retractions made in response t
  • Page 82. Signals and parameters Signals Over torque signals SKIP OLDTS [Classification] Input signal [Function] Retracts a tool if an overload torque is applied. [Operation] When this signal becomes "1", the control unit operates as follows: • Assuming that an overload torque is applied t
  • Page 9Parameters #7 #6 #5 #4 #3 #2 #1 #0 13400 OTD NOL OLR [Data type] Bit OLR When over torque signal is detected, the override value for rigid-tapping is: 0: not changed. 1: changed. NOL When cutting is reached to the depth of cut per action without the detection of over torque signal, the override valu
  • Page 1013411 Percentage of cutting feedtrate to be changed after over-torque [Data type] Byte [Unit of data] % [Data range] 0~100 This parameter sets the percentage of cutting feedtrate to be changed after an over-torque signal is received in a small-hole peck rigid-tapping. β=α×d1÷100 α:The override value
  • Page 1113413 Lower limit of the percentage of cutting feedtrate in a small-hole peck rigid-tapping cycle [Data type] Byte [Unit of data] % [Data range] 0~100 This parameter sets the lower limit of the percentage of cutting feedtrate changed for in a small-hole peck rigid-tapping. δ=γ×b3÷100 γ:Specified ove
  • Page 12Alarm and message Number Message Descriptions 5215 PECK RGTAP CAN'T BE ・ The small-hole peck rigid-tapping COMMANDED was specified during HPCC mode or the advanced preview control mode. ・ The small-hole peck rigid-tapping was specified during the three-dimensional coordinate conversation mode. ・ The
  • Page 133. Limitations Axis switching Before the tapping axis is changed, the canned cycle must be canceled. If the tapping axis is changed in rigid mode, P/S alarm (No.206) is issued. S command Specifying a rotation speed exceeding the maximum speed for the gear used causes P/S alarm (No.200). Distribution
  • Page 14Cancel Please don't specify a group 01 G code (G00 to G03) / G60 (when parameter MDL (No.5431#0) is set to '1') and G84/G74 in the same block. If they are specified together, G84/G74 is canceled Tool offset In the canned cycle mode, tool offsets are ignored. 3-dimensional coordinate conversion This