okuma LB15 Programming Manual

..-'"

OI<UMA

TECHNICAL

SINGAPORE

CENTR-E

-PROGRAMMING

-.'

"FO.R

CNC,~LATHE

..';H;1i\1;~:2~,~11~..

MANUIAL

...

PAGE

3. PROGRAMMING FORMAT

5. HOW TO PROGRAM CUTTING CONDITION

INTRODUCTION TO PROGRAMMING

PROGRAM PROCESS SHEET

.. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. ..

.. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. ..

AXIS & MOTION NOMENCLATURE

DETERMINING CUTTING CONDITIONS

REFERENCE POINT/PROGRAM ZERO

TOOL SELECTION

......................

...............

9. WORD FORMAT

.. .. .. .. .. .. ..

... ................

.. .. .. .. .. .. .. .. .. .. .. .. .. .. ..

..........

..............

4..........

. . ::,::,~~;:t.~,~;:':;;~.~;.~.,:". . :: ~ .; ;~.;l,~;~~~.~~i,~~ .

11' .

12.

" i.'

13.

'14.

COMPOUND FIXED CYCLES

LAP FUNCTION

.'..'

, ~.~

M-CODES 8 ;.,... .. .. .. .. .. .. .. .. ..

. .

PROGRAM EXAMPLES

15. TOOL NOSE RADIUS COMPENSATION.,j".......

. .

.. .. .. .. .. .. .. .. .. .. .. . .. .. .. -. . .. .. .. .. .. .. .. ..

... ..............

.. .. .. .. .. .. .. .. .. .. .. .. .. .. -. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .-.

ProgrammingFormat

Model 1S (Single Turret Model)

00100

NOOOO.

NOO01 NOO02

NOO03

N0050 GOO NOO51

Explanation:

NOOOO

NOO01

. .

G50 GOO

Xoooooo 2000000

X()()()()()O

2000000

(Cutting Program)

Xoooooo

200000o

',K,F

S.r,M

S 00 00

Soooo T0000 Moo

. M03(M04) MOB

M05M09 M02

~:.'

Dim43nsionwords. X ari~'?specify the turret inde)Cingposition,

'..

'.,

FOUr-digitSwordspecifi~s;thesPindlespee<fo,>,. . "'." .,' '. ..' '," ,.., :

X~)\.~i,=~6rc3'iiIit~;~fb~f~1~~i;~;~i~heri' ~~I;no~~'~~1h~;~ompensationi~ . no. '~-~t:J: '6r 'wit'h '

, psix-:digit number, when iLis..used. _ , .'.,'

'.~ . '" J~'; 1" .q. ~~i~'.::':' ~". ' . ,:~ '- ... ';':~$..~:~~.

::'-;Two-digitM code speci~ies the spindle Speed r~~o

N0002 : 'M03 starts the spindle r~tatiq~ in the forward dir8c~ipn.

(M~4in rever~;). . ' .

08 t

s a s cooan suppz., . '. ,_.,.,) __., ,. . , "

".'

.; ,,',., ~~,\1'.' .;..'," .

N0050 : Dim~nsionword~X'and ~return th~ t~iT~t'to'fhE{inae~ing position.'

M05 stops spindle rotation and MOBcoolant supply.

','

...;

: ",

N0051

Provide M02 at the end of a part program.

: '..

'.'.

Program Process Sheet

PROCESS SHEET

.,-.

0104

N001

N002

N003 N004

NOOS

N006

N007

N008

N009

,01O

..-

, ,(,}0.11

N012

,.NO13 '- ~:;, :':; ,W~;~:1':; .~Z40 $, '

N01l '-;;GOO'( ')(2~o5 t~4~'" N01S'

X(U) Z(W)

GOO

G01 GOO

.~192

:9°l:!,.t;;~~".:, .1"if~,8:,:,."

X800

X250

X20S

X250

X205 X230 1258

X200,

Z2000 Z100 Z53

Z43

I Z50

Z40

K F

:~~K.~;<i~:"."

.:" r

'!~'~0:', .~-.-.

, r

.,,', ',1 ./J ~I ':i,

S,T,M

M41 S120 M03 M08

FO.3,

FO.25

ro.4

"';;:'.

. ,

. t'~G~.'~:~,-. ,'_'.~-.;". :,..,;. ¥J."i"" t'~P"T""..d':'; ~ - t:~..:. '::,,: "~~~ . };_;." i. __.: _', ~~, ..-,!~~.\~_'-"'~o..~~~';~:;~~"_

, Shown' a~ov~i:,.i1>:~~?,.:~el~-,WPleO! .a program"~'':ocess shee~. It is ~~ti~Wlgwhiph:~e~~!J~~;i~~~:~~\Bf ....

programml~g, InstrUCtions,'compnslng alphabetic and numenc char.ac~~~,,,@~raE9ep,,1.0,;;a'~:~_9.f!.QI~!!.Hft\

':)IF:;~~~f:L

programmin~fscheme:iWith'1hese"instructions,operationsofthe machin~;jirtr'exptess~d:.' y~ >t"'''::~:' :; ':~i;;:"

Ecicn'line of the~

Agr'oup of commaf\ds .wJi~tef!in o.ne,line,is referred to.as a -block- and it-describes one machine,.'.' .

operation. . , ., ;

T.' '., . " ---"" .. _' ~ ~. .~:r ~.~. '. ~ . I. :; :

Usually, '(he machine executes, the programmed commands block by block in the order as programmed to produce a part.

The steps preparing such program process sheet is called .programming~.

. . . _ ,',' .' , _,_'. :,.-:,;~, ,- .-. ," ~:_::,.,:..:():::-~~~ .-:.'\:~_-~~~~:':::.r~~:i'rj~

rocess'~t1eet ~tarts with'

, . _: '.. ',,"..~: ~.t~.- ..".' " . . : \.', " '. . "\.' . - ~

. .' . :",.,;..,,,\

'.' uencatNumber :{N''Wora)

:,~t;KIn"

,--', -:?;,;,;~.:, """;}~~?;;f~~

I~'

AXIS AND MOTION NOMENCLATURE

Models LB9/LB121LB1S1lB25

The axis designation of LB91l812/LB151lB 15-IIIL825 CNC Lathes is as follows:

LB91l812/LB 151lB25

X-axis

(+ )

(-)

Transverse Turret Movement (infeeding direction)

. . . . . . . .

X-axis

Z-axis

(+ )

Z~axis

,'.

-.t-:.;.

LongitudinalTurret ~ovement

". . .

Direction of axis movement is defined by .. +" and ..-" sign

. >

X-Axis Command (1 mm unit ~OfT!rr~an~).; :' ;, i;. . "

. ~ f;: t1 '" '{'p,. ~ '}1 i";- _ ':;, or C~"'. :';';,;' 'i~/D...:._~i-':-t;~... . ..:_.:':/:." '_"",. ',_. ;._:

X-axis command'is given'iriierms'Ofdiameter as indicatedon apart drawing.

. t. '. '1+..:, 1', . . '..0; :> :..::,.:' ".

xamp e:' . ,

Program zero

---- xo

Z-Axis Command (1 mm unit command)

Z-axis command is given in terms of longitudinal dimensions referenc~d to the progra"rt~,'3.t9;}_c;;:i'-';'-i;;-:

Example:

. ." '-;;J;~:~(~..{i~~:::~~~:~~:..~""'~',;[o"j..:_\.-~.~..

~=.~ ,..,-~~

11II'

_~.r..,~'~~",~, ~ ..

III

181

HOWTO PROGRAM CUTTING CONDITION

Basically, the cutting conditions such as SPINDLE SPEED, FEEDRATE, and

DEPTH OF CUT use on a CNC Lathe can be determined in the same manner as

in the turning operation on a co~ventionallathe.

All the programmer has to do is to convert the conditions into the coded, digital form as -per and to register thes~ numerical information on

a) SPINDLE SPEED is specified wit~ a maximum 4-d~gits S code.

e.g If a spindle speed

m/min is required,

respectively.

b) FEEDRATE is specified with a maximum of 5-digits in Metric system

of 350 rpm or constant cutting speed of 120

it can be program as G97 S350 or G96 5120

pre-determined cutting

the data input format the process sheet.

F code.

e.g If a feedrate of 0.35 mm/rev is required, it can be programmed

as G95 FO.35.

C),

Example

Where, 'st6ck-4;ditnt~t~ei..

Des iredd~pth ()t(~ut,~i. ='i~5 ;,mm 't.~nj

X value to oePEogrammed

(depth of ;~m:~{~ '~a7~ri;eter)

. ,,~uV.r~~{~'Jt..~f~~~f?~.~'~;:;~-:. r~p:;:J:

. ",~:"~;". ;--\~~. ,... ~~J:~;).r:.;;:.!.',

.:.:.. .',.f'''-,r. ;-..;i,;~',--~.."r . .

= 100 ~ (5x2)

90tfun'

,.....

Determining Cutting Conditions

Cutting conditions such as spindle speed, feedrate and depth of cut are selected more or less in

the same manner as witha conventional lathe. WithCNC lathes, these conditionsare entered in a

program process sheet using alphanumerics in the predetermined format. ' Formulas used to determine cutting conditions:

V=1rXDxn

where, V = cuttingspeed, m/min

1000

rr =circular constant (3.14)

o =workpiece diameter, mm

n =spindle speed, rpin

HP =

. . j -"'!"-~" ~... . r ". _\ .

~here, ~ HP, ~ required hor:sepo~er, ~p e/i'.:" ~'.<,.

VXKxtXf

7S x 60

, .

V xJs ~_!'-x

6000'

, , ,

'-'-":'~~i;.;t:'ieq~~~~?, ~O~!~'.~~\ 1'co' "'" ' ',Q'I~J,

.:~Y:.:~~:'~>._~~mrig'.s~ed,' m/min

~."I< =, cutting :r~sis~~nce~ ~.g/t1Jm2, ,

". ...: :1.:',,,.~ 1',0i-: .' ...

,,~~;;.1iEXartiple:' "26d'fO'r~45C :'CJJS,carbon steel)'

,', 120 for FC20 (JIS,

,~:dt ZL;' depth of cut, i'nm

cast iron)

';.,

. .,'

,'~

......

,~,

- -,'

Reference Point

On the CNC Lathes. there are two reference points as below: (1) Machine Origin

This is the fixed origin inherent in respective machines. where output values from the ~SP position encoders of X- and Z-axis become zero. Axis movement of the machine is referenced

to this fixed machine origin. .

(2) Program Zero (Workpiece Origin)

The zero point that can be set at any point as needed by "Zero Offset" operation; once the workpiece zero rs set. axis motion is controlled' on the coordinate system that has the origin at the set workpiece zero.

Cutting is carried out taking this point as the reference point.

A programmer should inform a machine operator of the established programming zero position either on the part drawing or with a memorandum.

.~.. ~..

.......

a X

. .

.\J".

XO.Zo: Zero offset value

X.Z : Programmedcommand

'~."~.

Tool Selection

LB Series

Selection of a cutting 1001is made by four-digit figures followingaddress character T,

T 00 QQ

Tool Offset No.

32 pairs (01 to 32) For two-spil)dle model, 32 pairs of tool

offsets are used on the individual turrets.

ToolNo.

The number identifying ihe turret face position is used as a tool number.

When the control features the toolnose radius compensation function,a T word comprises she-digit figures. (optionalfor OSP500L-G)

T Q.Q 00 00

(

.t .

FC;) :"ToolNumber

, '

r:~.::,;:;~~:;~~~}~. '

. . >~.. . ",,~,., .

. '~t!.::~."~~~~._t"7j. - -~..'

"..~. .. I!.~. . t.. )....

..-~ ~

. Same as above

Compensation No.

lB15

The toolnose radius compensation .

number fI:o.mo."-,o 32 is sp~cified. ;

.: <:.-~..;-;..~'

~ , .; '~j. ,":.">'~'S.<~.'

';::.". ~~.'

\;' 3~\~".:t'\~.f~",~ ''''~''

,tf~~$.~~:~_i._'-,:", .

-~''::-

;

o ~<-.- .

(2)

- -.. -. .,--, ~--'. - ~ -. .'.,.~ ..." . -.' 'p .-

As a tool number, sp'ecifythe turret (ace position number inc!icatedby a name plate.

, Note 2:, The octagonal turret is available as an option (or LB 12.

Tool Offset Number

. ~. ..~ ~1. ~ .....

, .

. '.' -. .::"". .-'{

-::to":~." ,to

. ~",'~. .

..~

WORD FORMAT

Word Format

00000

Noooo

Associated Information and Function

Program Number or Program Name

Entered at the beginning of a part program to identify respective programs.

Program Number Up to four numeric characters following

address character "0'" are used to illdicate a.Program Number.

Program Name

When an alpha character appears following address character "0", such express'ion is referred to as "Program Name". Up to three alphanumerics can be used following the first aiphabetic character.

Sequence Number or Sequence Name

Entered at the beginning of each block to identify respective

blocksin a p~r~ program. d...; -: ';.'.;,:~,. '.

~"" ". ~ :-".'1:,

~"" ~ '.' /'"..1..C'1...~ ~~;'\-.1..:"

X:::ooo.ooo

N~mbers .ar~ \£~ta lly used to Indg~te ;'tbe'exe~Jd::g~:;::gt~~?~:~.~ .

; blocks. Although program numb.e~~..a~fi!~.general.1Y"a.;>.§,{.gI1.e~,t~lth

. consecut i ve. .,numbers'~ ;such numbe.i;'!::.m~y, :1J9\t"necessarlJ.y-"r!>,;~'~,C~ri-': .

. '_'~." ,.",';~ _ ," " '., '. . .'.., .,:', '...,'~..~rv7.t, ..

-.-;. ~ _ .:1 ",' _,,~ :..,.'(. :"~'''-..:Z, ,"_ '. , ' ''''''":j .' ~...'t '~.-J: ~.,." ',:;. :

'secutive. S.e.quence'-iiame is use~;'.~~s:1-}t.~~~i:fy.;.a.'sPf~~;\}~~~J,ec.k>,

in a part program. !.~..",' '''---~~':~;,<:~'f;~';;':':~';:;'

!Sequence N.;!;iil~~:;:.'i!Jp~~" fou'hiitl~'<i.,1a...{t~~_i',

address chaE:~F,ter"N" a:reused?tO:c;:~Nlicat~

.a Sequence"-N~m!:>er'," . _.,..;:.~.:J:/':./~,~'_

. . -,.~'..

,Sequence Name

When an alpha ch~r~cter appears'.~i£,~i.~l.~~1.#g..

,..:::::::t~:1#~~~;~~ij:~~c':;~~~:;~;1:il.~~t.~~!.$.:-

three alphan~.erics can be used.fol,lowing

the first alph~betic character. "

Dimension Word' :- Diameter

. .

G CODES

{2-

Code

Goo

G Code: Three numeric characters following address character

Associated Information and function

G establishes the mode of axis movements.

GOO

Rapid Feed

Used to feed the axes .t a rapid feedrate to the commanded coordinate position.

GOI

Linear Interpolation

Used to cut Feedrate to

a straight line parallel to X- or Z-axis or a taper. be employed in this mode is commanded by an F'word,

Foooo.

G02 rCircular Interpolation, CW

Used to cut an arc in the clockwise direction. Feearate to be employed is commanded by an F word, Fooooo, as in GOI mode.

.~'f~

G03

-or,....~_._._._..

""-.

,,~.-~.-\"'" '-'''-..~:':,:~~

~L~li0:11_r.. 'I~~_~':,e.~!l~~l_'_~~,~

.Used;l~O"cut,an,'arcc-;i!.mthecounterclockwise direction. Fe~drate,

_t?.-ibe~empl,oye,d_

.........-

~OQe~.'1~..~.:.' .._ .. ,.'''':~_:=,,:''_" ,"

G04

is ,~_0!J!4~nded by an F}~ord, F()ooo. as inGOI

. t

1 :0

.-.- .. ".

'..

Code

G33

G40

G41

G42

Associated Information and Function

Fi~ed Thread Cutting Cycle : Longitudinal

Automatic thread cutting cycle as

shown at the left is executed.

Tool Nose Radius Compens~tion : Cancel. Used to cancel the tool nose radius compensation function

Tool Nose Radius Compensation: ID Ordinally Cutting

Used to callout the tool nose radius compensation mode for ordi~ally 10 cutting cycle.

Tool Nose Radius Compensation: 00 Ordinally Cutting Used to callout the tool nose radius compensation mode for

ordinally 00 cutting cycle.

G50 I Maximum Spindle Speed.Designation

:Us-ed'::t'~::;'~:t'~he 'allowable maximum spindle spe,~d.

G90 ~.

G91

G94

. l

G95

~':'5({J,.~:-;?~.~~:~~"~~:~k~~~. 5~-~;5 ~{~::-:.7?1~:?-~3:~~:':}r~7i\,*:~~~~f1,

IncreriieJl.i:aJ.d't~QgramiUing ..:',' ..

_ ..-'.'.:'~>~:'_;'t-\..~..:;.. ;;". ,~,; ,.~..:<-'.~:.~.~J~::...:t::.};. . ":..~",.

Us.ed ,t~es tabUsh increm~t\.t~l~Gpr<?gr~umil~ngD.1<>d~{

. . oJ.'~p'~.~'~""=...f'(-, .. ,"?~,,_,'l~,--~~.;~..1f~L.~-:i.~',.' . "-- ""~'(-:":~"'1::.1:~'-

Feed p~~~~:;¥n~~e- M~~e" ':;,; ;,~l:ii~r:

;Usedto:~

~~ ~ab 11 sp~~~ita~~;!!i~~~:~fJ~l!Iode ~

Feed per Revolution Mode Used to establish mm/reY~lfeedrate mode.

When the control is reset, it is' in the G95 mode.

."..'.;...,".~" . . .'.

GOO POSITIONING

( 1 ) Forma t'

Xoooo.ooo Zoooo.ooo

I .

....

With the commands indicated dinate point is carried out

(2) .Example Program

above. positioning at a rapid traverse

300

to the programmed

rate.

coor-

.-.

;;)'. r

Position:ing'i"s\made to .Xl(N-along X-axis ata rapid tra-

verse: rate.:. . ,No Z-axis mov.ement occurs.

. ._r...,,...),;..,.,'~'' : , .. . ~"" .'

, ...;, ,:.". . ,'-.

GOl STRAIGHT-LINE CUTTING

(1) Format

GQl Xoooo.ooo (Zoooo.ooo) Fo.ooo

With the commands abGve, axis mov~ment from the current position to

the commanded position is perf~rmed along the ~traight line parallel to either X- or Z-axis at a feedrate specified by an F wordo

(2) Program Example

; ._,

(Coordinates Commanded on

Process Sheet)

100

.' '$

-....

': "0

...-6:-f':~;'

! ; . .

, 120

....

i;~;d~r;)1;';

204

200

~.~t" ;",.,:>.l~.:.j

<5>

'0-

. I

X2~ ([) (!)X8/f4

ItA -~

.zIOff ;._ - - i Z24>4

@_-- - . I

:.;' '

~- . X194> I

,.,.,.. .?z 12~ 0,

-)(j9~" , t.

..:!/~.;'.<:fi. .(zt~)

,.:!, ';'

, '~:,,"Z !2~' >:',.~;.;

X!e5

" ...,

"5..'>

"'.-

..\..-:,.~,

Feedrate:

;':b) ,

NOOO): G01 2200 feeds the cutting tool to the starting point of the arc

to be cut at the specified feedrate.

N0004: Since the arc is to be cut in the counterclockwise direction, GO)

is provided.

X and 2 words are used to ~pecify the coordinates of the end point of the arc. L word is to specify

the radius she.

. ~.

Center of arc

N0005: 2185 in~icates the coordinate of the starting point of arc.

N0006: Since the. ~r~ .is to be cut in the clockwise direction, G02 code is

. provided."'~ J.~

center,:'of'~~f~~;-:-~1~~.~.."': :.-,:."i,.' .

,.,u:~ :~~~,;;;:t~;~~~:~~::~:t;1r;r~~~1~e t:~:~~~l~~t~h~. C~:t:~;~:~;

.~~; ., ,'\(':tf1'",' , '

- -. ., , , '-..

; .__~-..~~ ~,.,\..::;';~~~.._._~._no','.'

-."' -.: f~~"~-"~'~'--; ~~;;:'::;:f~'\ ~~...' .", . -

N0007:

.X80~.<~2q~~ retu'rns the cutting :to~l to the starting point.

.~'/~:';:'~~:;!'..\; ~~':.. _..' _ '. . --:-..:~--<~t~.

M05 'stops'::1,th~-;;spinalerotation~ >.:';~ .

~'. '.; :'j:_~~?~"-:-

M09 stops.~.th.~ _~9pl~nt ~upply .;.

.;--L

N0008: M02 resets the control.

G02/G03 ARC CUTTING

Format

G02!G03

Xl 21

L F

G02 and G03 are used to specify the directi:'n of arc. X and Z words indicate

the coordinates of .end point of arc to be cut and L is to specify the size

of the radius. F is to designate the feedrate.

point

'G -.

. ....$

..-.-..-

NOOOO G50

NOGGLeo .c,,

N(,)G(,)2-

NIJG/J3G1J1'

NOGIJ4 GO)) X19/J

, .N1J1J1J5 GIJI. . ..--,.:.... '.. Zl-85

1/J1J1J6

NOGIJ7

N(,J008

Vl.'

GQ2S

GIJG XSO/)

,',.... ..

--X Z

\,.

'., ....

'XIS/J'

:2(J1J:>

8GG

t.-c ::.

Z204.

Z20/J FO .' 2

'195

Z18/J

Z204

..< .: . )ii1

. L5\

'L5:U

. .

:': -:r;':'

,..",.:.I..

..... ."...".

.;\;.;it:,

.';':;1r£.i::'

c,;t'i

. ..,'-

-!' t:"t1t">

'..&\iPJ

NOIJ/)I: Commands in NO/)lJl indicate:

.0;. ..

-. .

S,T,M .

53000 )-" .,;.:,):.

ij;'.'..::

,s2QIJi.$fkTQ 1<1 14

M08 MG3

-:i . .:.'.::

.----------.----..::- _...:...

.'('..

...'

M09 .M1J5

!:-;-

MIJ2

,_:,- '..-'

-OJ."

.~j

-- ". .

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