Mitsubishi Electronics IB-1500193(ENG)-D ユーザーズマニュアル

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[1] For speed loop gain during synchronous tapping, speed loop gain set 2, which consists of SP008 

(speed loop gain 2), SP009 (speed loop lead compensation 2), and SP010 (speed loop delay 

compensation 2), is used. Thus, SP035 has to be set as follows. For position loop gain, set 

standard 33 to SP002 (position loop gain interpolation mode).

Set the spindle and interpolation axis by tapping.

[2] Create a NC program so that the synchronous tapping operation program has 3000r/min of spindle 

speed, 1mm (equivalent of M6 screw) of screw pitch size, and depths at which the following two 

different operation patterns are generated.

(Note that the operation conditions, such as spindle speed and screw pitch, may be specified by the 

machine manufacturer.) 

33

Value in SP005 set at "5-3-2" (Initial setting value: 150)

1900

0

0200: Speed loop gain set 2 selection (Validate bit9)

Set the same value as spindle parameter "SP002"

Set it when using SHG control (when not using, set to "0" )

Set it when using SHG control (when not using, set to "0" )

A

djust depth so that motor rotation speed waveform shapes trapezoids

A

djust depth so that motor rotation speed waveform shapes mountain-valley

Constant speed area 

Spindle rotation speed (r/min) 

S

p

indle rot

a

tion speed (r/

min) 

Time (sec) 

No constant speed area 

Spindle rotation speed (r/min) 

S

pindle rot

ation speed (r/

min)

 

Time (sec)