lập trình gia công trên máy Điều khiển số
Post on 02-Mar-2018
224 Views
Preview:
TRANSCRIPT
-
7/26/2019 Lp Trnh Gia Cng Trn My iu Khin S
1/54
11
LP TRNH GIA CNG TRN MTRNH GIA CNG TRN MY
I
I
U KHI
KHI
N S
S
Ths.Phng Xun Lan
B mn CNCTM
Khoa C Kh
-
7/26/2019 Lp Trnh Gia Cng Trn My iu Khin S
2/54
22
Ni dung c
dung c
a b
b
i gi
gi
ng
g
Khi nim chung Quy trnh lp trnh gia cng trn my iu khin s
Phng php lp trnh
Ngn ng lp trnh M ISO c bn
Cc chc nng dch chuyn, cc chu trnh
Cc chc nng ph Cc chc nng vn hnh my
Lp trnh theo kch thc tuyt i, tng i
Cc dng ni suy Cc chc nng hiu chnh
X dch im chun
-
7/26/2019 Lp Trnh Gia Cng Trn My iu Khin S
3/54
33
Kh
h
i ni
ni
m chung
chung
Lp trnh L qu trnh thit lp cc chui lnh cho dng c ct t bn v chi
tit v s tay dng c cng vi vic pht trin cc lnchj ca
chng trnh sau chuyn tt c cc thng tin ny sang b phn
mang d liu c m ho c bit cho h thng iu khin s
Chng trnh
L ton b cc cu lnh cn thit gia cng chi tit trn my
cng c iu khin s T lnh
L s phi hp cc con s, ch ci lng ho chnh xc cc
chc nng yu cu thc hin Cu lnh
L s ghp ni ti thiu ca cc t lnh cn thit thc hin mt
dch chuyn hoc 1 chc nng khc ca my cng c
-
7/26/2019 Lp Trnh Gia Cng Trn My iu Khin S
4/5444
Kh
h
i ni
ni
m chung
chung
Cu lnh tng qut (ISO 6983)NGXYZABCIJKHDTMSF;
N: S th t ca cu lnh trong chng trnh
G:iu kin hoc d liu dch chuyn
X, Y, Z: Cc to thng
A, B, C: Cc to quay
I, J, K: Thng s ni suy
HD: Hiu chnh
T: Dng c
M: Chc nng ph
S: Tc s vng quay
F:Lng tin dao
; : Kt thc cu lnh
-
7/26/2019 Lp Trnh Gia Cng Trn My iu Khin S
5/5455
Kh
h
i ni
ni
m chung
chung
Quy trnh lp trnh gia cng NC
-
7/26/2019 Lp Trnh Gia Cng Trn My iu Khin S
6/54
66
Kh
h
i ni
ni
m chung
chung
Quy trnh lp trnh gia cng NC Xc nh im 0 (W) ca chi tit gia cng
Lp s g t chi tit gia cng trn my CNC
Lp s to
Lp tin trnh cng ngh gia cng chi tit
Quy trQuy trnh cng nghnh cng ngh, th, th tt ccc nguyn cngc nguyn cng
Lp phiu dng c ct
SShihiu dao, vu dao, v trtr ttch dao, dch dao, d liliu cng nghu cng ngh
Lp trnh chng trnh NC theo ch dn lp trnh bng ct m lp
trnh NC
Th nghim, sa i chng trnh NC
-
7/26/2019 Lp Trnh Gia Cng Trn My iu Khin S
7/54
77
PHNG PHHNG PHP LLP TRNHTRNH
-
7/26/2019 Lp Trnh Gia Cng Trn My iu Khin S
8/54
88
Phng ph
hng ph
p l
l
p tr
tr
nh
h
S cc phng php lp trnh
Cc yu t:
VV trtr llp trp trnhnh
MMc c ttng hong ho c c
KiKiu mu my ty tnh snh s ddngng
CCc phng tic phng tin hn h trtr llp trp trnh cnh c
CCc phng tic phng tin hn h trtriiu khiu khin vn v kikim tram tra
Cc phng php lp trnh
Lp trnh ti phn xngLp trnh trong khu vc
chun bsn xut
Cp lnh bng tay ti my
Lp trnh bng my
Lp trnh tng
Lp trnh bng tay
-
7/26/2019 Lp Trnh Gia Cng Trn My iu Khin S
9/54
99
Phng ph
hng ph
p l
l
p tr
tr
nh
h
Lp trnh ti phn xng
L qu trnh tm ra cc thng s iu khin v np chng vo h
iu khin thc hin trc tip trn my CNC thng qua bng iu
khin, sau khi lp trnh c th gia cng lun trn my.
Mt s chc nng ca bng iu khin
CCc nc nt bt bmm cc bibiu tu tng ring lng ring l cc ththggi ra mi ra mt ct cch trch trc tic tipp
ccc chc chc nng c bc nng c bn cn ca qua qu trtrnh tnh to ho hnh honh hoc nhc nhng chu trng chu trnhnh
gia cng ring.gia cng ring.
KK thuthut menut menua ra ca ra cc khc khnng lnng la cha chn thn thch hch hp trong mp trong mt lt lnhnh
vvc cc c ththcho ngcho ngi ii iu khiu khin (n (nh lnh l ccc dc d liliu vu v vvt lit liu, cu, ccc
gigi trtr ththch hch hp vp v ttc c cct,t, llng chng chy dao tngy dao tng ng sau khi chng sau khi chnn
c vc vt lit liu gia cng)u gia cng)
SoftSoft--keyskeys ll nhnhng phng phm bm bm gm gn lin lin vn vi mi mn hn hnh mnh m chchc nngc nng
cca cha chng khng xng khng xc c nh theo thnh theo thi gian (ci gian (c thth thay thay i tui tu theotheo
menu lmenu la cha chn vn vc hic hin thn th trn mtrn mn hn hnh)nh)
MMn hn hnh nh hoho ll ssm bm bo hn quo hn qu trtrnh lnh lp trp trnh bnh bng tay vng tay vnnhhnh an tonh an ton thng qua m phn thng qua m phng trn mng trn mn hn hnh inh iu khiu khinn
-
7/26/2019 Lp Trnh Gia Cng Trn My iu Khin S
10/54
1010
Phng ph
hng ph
p l
l
p tr
tr
nh
h
Lp trnh trong khu vc chun b sn xut (ngoi phn xng)
L phng php lp trnh theo ngn ng lp trnh ph hp v c
lp vi my gia cng
Lp trnh bng tay c s tr gip ca my tnh
Theo ngn ngTheo ngn ng llp trp trnh phnh ph hhp bp bng cng cch dch dng tay g cng tay g cc phc phmm
cca ma my ty tnh nh soson thn tho chng tro chng trnh gia cng NCnh gia cng NC
LLp trp trnh bnh bng tay i hng tay i hi ngi ngi li lp trp trnh phnh phi ci c kikin thn thc vc vng vng v
hhnh hnh hc vc v cng nghcng nghgia cnggia cng..
NgNgi li lp trp trnh phnh phi bii bit cht chnh xnh xc dc dng dao cng dao c vv khkhnng snng s ddngng
chchng trn mng trn mt mt my CNC xy CNC xc c nhnh
Lp trnh t ng bng my
TT dd liliu thiu thit kt kchi tichi tit (dt (d liliu CAD) chuyu CAD) chuyn giao lin giao lin cho khu gian cho khu giacng (CAM) nhcng (CAM) nh hh ttch hch hp, lin hop, lin hon theo hai bn theo hai bc chc chnh sau:nh sau:
DDng menu Design ng menu Design vv chi tichi tit gia cngt gia cng
DDng menu Create Gng menu Create G--code code llp chng trp chng trnh gia cng NC cho chi tinh gia cng NC cho chi titt
v v, k, kt ht hp chp chy m phy m phng trn mng trn my ty tnhnh
-
7/26/2019 Lp Trnh Gia Cng Trn My iu Khin S
11/54
1111
Phng ph
hng ph
p l
l
p tr
tr
nh
h
u im ca cch lp trnh bng my
Ngn ng lp trnh l thng nht cho cc phng php gia cng
khc nhau (tin, phay, khoan, laser)
Tit kim thi gian ng k khi m t chi tit v qu trnh gia cng
cn thit
Th hin bng ho cc m phng ng hc v hnh hc ca
chi tit trong qu trnh ct, trong mt s trng hp c th m
phng c dao c c th kim tra chng trnh d dng Chng trnh gia cng c lu gi rt thun tin cho vic
chuyn tin trc tip ti my, thng qua cc mng ni b hoc gin
tip qua cc vt mang tin
C th p dng cc gii php CAD/CAM-CNC tch hp- lin
thng- khp kn t thit k chi tit, lp trnh gia cng NC n gia
cng NC trn cc my cng c.
-
7/26/2019 Lp Trnh Gia Cng Trn My iu Khin S
12/54
1212
NGN NGGN NG LP TRNHTRNH
-
7/26/2019 Lp Trnh Gia Cng Trn My iu Khin S
13/54
1313
Phn
hn
lo
o
i
Cp thp
Lp trnh c s bng ngn ng ca h iu khin s (ISO code)
Cp cao
Lp trnh nng cao bng ngn ng lp trnh cao co v d (APT
Automatically Programmed Tool)
-
7/26/2019 Lp Trnh Gia Cng Trn My iu Khin S
14/54
1414
c im
Tiu chun quc t ISO 6983 quy inh mt b m (ISO code) cho
cc my NC, CNC iu khin qu trnh gia cng c kh.
Chng trnh NC lp theo ISO l mt tp k t c c php ring
c lu gic lu gitrn trn a ma mm hay m hay a ca cng,ng,
c lc lp bp bng tay vng tay vi si s hh trtr cca ma mt ht h soson thn tho vn bo vn bn nn no o
hohoc lc lp tp tng (bng (bng phng phn mn mm lm lp trp trnh tnh tng trn mng trn my ty tnh nnh nii
vvi hi hiiu khiu khin cuar mn cuar my CNC)y CNC)
M ISO c b
ISO c b
n
-
7/26/2019 Lp Trnh Gia Cng Trn My iu Khin S
15/54
1515
Cc chc nng iu khin v k t m ho
M ISO c b
ISO c b
n
-
7/26/2019 Lp Trnh Gia Cng Trn My iu Khin S
16/54
1616
Cc lnh dch chuyn v chu trnh
M ISO c b
ISO c b
n
-
7/26/2019 Lp Trnh Gia Cng Trn My iu Khin S
17/54
1717
Cc lnh ph tr
M ISO c b
ISO c b
n
-
7/26/2019 Lp Trnh Gia Cng Trn My iu Khin S
18/54
1818
Cu trc mt chng trnh NC theo ISO-DIN 66025
Ngn ng
gn ng
lp tr
tr
nh theo m ISO c b
h theo m ISO c b
n
% PM; {Chng trnh chnh}
O; {S hiu chng trnh}
N01 G17 hoc G18; {Khai bo mt phng cn gia cng}
N02 G99; {Khai bo bin dng ca chi tit gia cng}
N03;
;
; {Cc cu lnh khc ca chng trnh}
;
M30; {Kt thc chng trnh}
-
7/26/2019 Lp Trnh Gia Cng Trn My iu Khin S
19/54
1919
Cu trc ca ngn ng
Bao gm cc t xc nh c ghp ni vi nhau theo mt nguyn
tc c php cho trc.
Cc ch dn ny c ngi lp trnh tng kt thnh cu v a
vo trong my tnh
Ngn ng dng cho vn bn a vo b x l NC c tiu
chun ho
Hnh hc ca chi tit Ngi lp trnh phn tch hnh dng ca chi tit gia cng thnh cc
yu t hnh hc. Mi yu t hnh hc ny xc nh khi bt u
chng trnh v c trang b bng mt tn k hiu
Hu ht tt c cc ng vin hnh hc c th hin qua cc
thnh phn hnh hc c bn nh: im (POINT), ng thng
(LINE) v vng trn (CIRCLE)
Ngn ng
gn ng
lp tr
tr
nh APT
h APT
-
7/26/2019 Lp Trnh Gia Cng Trn My iu Khin S
20/54
2020
6 loi cu lnh trong mt chng trnh gia cng NC theo ngn
ng APT
Cc cu lnh nh ngha ban u(nh ngha hnh hc, kch thc
ca phi, nh ngha hnh hc, kch thc chi tit cn gia cng, vt
liu gia cng, cc c tnh v thng s cu dng c gia cng) Cc lnh dch chuyn (nh v dng c gia cng, m t qu o
chuyn ng ca dng c gia cng)
Cc lnh m t nguyn cng (xc nh/t ch ct, chn dao,bt/tt dung dch trn ngui)
Cc lnh ph tr cng ngh (nh ngha dung sai, ch dng
my, cc lnh hiu chnh dao)
Cc cu trc iu khin (vng lp, chng trnh th cp, chng
trnh con, cc chu trnh gia cng)
Cc lnh tnh ton (thc hin cc php ton thng thng, tnh
ton cc hm s ton hc vi phn/tch phn.
Ngn ng
gn ng
lp tr
tr
nh APT
h APT
-
7/26/2019 Lp Trnh Gia Cng Trn My iu Khin S
21/54
2121
Cu trc mt chng trnh vit theo ngn ng lp trnh APT
PROGRAM
USEMAC
USEDAT T
USEDAT M
DEFCON =
ENDCON;
DEFVAR
ENDVAR;
DEFTUR < Cc cu lnh xc nh dng cgia cng>
ENDTUR;
DEFGEO < Cc cu lnh nh ngha hnh hc>
ENDGEO;
DEFPRD;
PROFIL
ENDPRD;
DEFWP < Cc cu lnh nh ngha phi>
ENDWP;
START
FINI;
Sdng cctp c sn
nh ngha cchng s
nh ngha ccbin s
nh nghadng cg/c
nh ngha bindng hnh hcchi tit cn g/c
nh ngha chitit cn giacng
nh nghaphi
Phn chng
trnh chnh
Tn chngtrnh
Ngn ng
gn ng
lp tr
tr
nh APT
h APT
-
7/26/2019 Lp Trnh Gia Cng Trn My iu Khin S
22/54
2222
Ngn ng
gn ng
lp tr
tr
nh APT
h APT
nh ngha mt im p=POINT/x,y,z - a cartesian point
p=POINT/l1,l2 - intersection of two lines
p=POINT/c - the center of a circle
p=POINT/YLARGE,INTOF,l,c - the largest y intersection of a line and a circle *Note: we can use YSMALL,XLARGE,XSMALL in place of YLARGE
nh ngha mt ng thng l=LINE/x1,y1,z1,x2,y2,z2 - endpoint cartesian components
l=LINE/p1,p2 - endpoints
l=LINE/p,PARLEL,l - a line through a point and parallel to another line
l=LINE/p,PERPTO,l - a line through a point and perpendicular to a line
l=LINE/p,LEFT,TANTO,c - a line from a point, to a left tangency point on a circle
l=LINE/p,RIGHT,TANTO,c - a line from a point, to a right tangency point on a circle l=LINE/LEFT,TANTO,c1,LEFT,TANTO,c2 - defined by tangents to two circles
l=LINE/LEFT,TANTO,c1,RIGHT,TANTO,c2 - defined by tangents to two circles
l=LINE/RIGHT,TANTO,c1,LEFT,TANTO,c2 - defined by tangents to two circles
l=LINE/RIGHT,TANTO,c1,RIGHT,TANTO,c2 - defined by tangents to two circles
-
7/26/2019 Lp Trnh Gia Cng Trn My iu Khin S
23/54
2323
Ngn ng
gn ng
lp tr
tr
nh APT
h APT
nh ngha mt ng trn c=CIRCLE/x,y,z,r - a center and radius
c=CIRCLE/CENTER,p,RADIUS,r - a center point and a radius
c=CIRCLE/CENTER,p,TANTO,l - a center and a tangency to an outside line
c=CIRCLE/p1,p2,p3 - defined by three points on the circumference c=CIRCLE/YLARGE,l1,YLARGE,l2,RADIUS,r - tangency to two lines and radius
*Note: we can use YSMALL,XLARGE,XSMALL in place of YLARGE
Cc dng phc tp PLANE/ - defines a plane
QUADRIC/a,b,c,d,e,f,g,h,i,j - define a polynomial using values
GCONIC/a,b,c,d,e,f - define a conic by equation coefficients
LCONIC/p1,p2,... - defines a conic by lofting (splining) points
RLDSRF/ - a ruled surface made of two splines POLCON/ - define a surface using cross sections
PATERN/ - will repeat a motion in a linear or circular array
-
7/26/2019 Lp Trnh Gia Cng Trn My iu Khin S
24/54
2424
Ngn ng
gn ng
lp tr
tr
nh APT
h APT
V d L1 = LINE / 10,15,0,25,40,0 [nh ngha ng thng L1 i qua 2 im c to
tng ng X,Y,Z l 10,15,0 v 25,40,0].
D5 = LINE / P1, PARLEL, D1 [ nh ngha ng thng D5 i qua im P1 v song
song vi ng thng D1].
D10 = LINE / RIGHT. TANTO, C1. LEFT, TANTO, C2 [ nh ngha ng thng D10tip tuyn vi vng trn C1 pha bn phi v tip tuyn vi vng trn C2 pha bn
tri]
-
7/26/2019 Lp Trnh Gia Cng Trn My iu Khin S
25/54
2525
Ngn ng
gn ng
lp tr
tr
nh APT
h APT
Cc lnh dch chuyn cbn FROM/p - specify a start point
FROM/x,y,z - specify a start point
GOTO/p - move to a final point
GOTO/x,y,z - move to a final point GOTO/TO,p - move until the tool touches a point
GOTO/TO,l - move until the tool touches a line
GOTO/TO,c - move until the tool touches a circle
GOLFT/l1,TO,l2 - go on the left of l1 until the tool touches l2 GORGT/l1,TO,l2 - go on the right of l1 until the tool touches l2
GOBACK/l1,TO,l2 - reverses direction along l1 to l2
GOBACK/l1,TO,c1 - reverses direction along l1 to c1
GOUP/l1,TO,l2 - goes up along l1 to l2 GODOWN/1l,TO,l2 - goes down along l1 to l2
GODLTA/x,y,z - does a relative move
Note: TO can be replaced with PAST, ON to change whether the tool goes past the
structure, or the center stops on the structure.
-
7/26/2019 Lp Trnh Gia Cng Trn My iu Khin S
26/54
2626
Cc lnh khc
Lnh b dao
TLLFT (Dap ct bn tri chi tit).
TLON (Khng b dao, lp trnh theo tm dao).
TLRGH (Dao ct bn phi chi tit).
Cc lnh iu khin my v cc lnh b sung:
Dung dDung dch trn nguch trn ngui: COOLNT (coolant).i: COOLNT (coolant).
CCt: CUTTER (cutter)t: CUTTER (cutter) Di chuyDi chuyn: MOVE (move).n: MOVE (move).
ChChy nhanh: RAPID (rapid).y nhanh: RAPID (rapid).
DDng cng c: TOOL (tool).: TOOL (tool).
TTc c cct: FEDRAT (feedrat).t: FEDRAT (feedrat).
GiGim tm tc c cct tt ti ni chuyi ni chuyn tin tip trp trnh cnh ct lt lm: MCHTOLm: MCHTOL
KKt tht thc: END hoc: END hoc FINI....c FINI....
Ngn ng
gn ng
lp tr
tr
nh APT
h APT
-
7/26/2019 Lp Trnh Gia Cng Trn My iu Khin S
27/54
2727
V d
Ngn ng
gn ng
lp tr
tr
nh APT
h APT
-
7/26/2019 Lp Trnh Gia Cng Trn My iu Khin S
28/54
2828
M ISO C B ISO C BN
M ISO c b
ISO c b
n
-
7/26/2019 Lp Trnh Gia Cng Trn My iu Khin S
29/54
2929
Cc chc nng dch chuyn, cc chu trnh
Cc chc nng dch chuyn v cc chu trnh c biu th bng ccch ci a ch G v mt con s c hai ch s ng sau
Mt s chc nng dch chuyn c bn
G00:G00: ChChy dao nhanh khng cy dao nhanh khng ctt G01:G01: DDch chuych chuyn theo n theo ng thng thngng
G02/G03:G02/G03: DDch chuych chuyn theo cung trn cn theo cung trn cng/nng/nggc chic chiu kim u kim ng hng h
G17/G18/G19:G17/G18/G19: Gia cng theo mGia cng theo mt pht phng XY, XZ, YZng XY, XZ, YZ
G20/G21:G20/G21: HHn vn vmmt/incht/inch G90/G91:G90/G91: Ghi kGhi kch thch thc tuyc tuyt t i,i, tng tng ii
Cc chu trnh l nhng chc nng dch chuyn c nhc i nhc
li trong chng trnh. Chu trnh do ng ch to my quy nh v lu tr trong phn mm
G83:G83: Chu trChu trnh khoan lnh khoan l susu
G87/G89:G87/G89: Chu trChu trnh phay hnh phay hc vung, trnc vung, trn
M ISO c b
ISO c b
n
-
7/26/2019 Lp Trnh Gia Cng Trn My iu Khin S
30/54
3030
Cc chc nng ph
Cc chc nng ph c biu th bng cc ch ci a ch M v mt
con s c hai ch s ng sau
Mt s chc nng ph c bn
M03/M04:M03/M04: Quay trQuay trc chc chnh theo/nnh theo/nggc chic chiu kim u kim ng hng h
M06:M06: Thay dao tThay dao tngng
M30:M30: KKt tht thc chng trc chng trnhnh
M ISO c b
ISO c b
n
-
7/26/2019 Lp Trnh Gia Cng Trn My iu Khin S
31/54
3131
Cc chc nng vn hnh my
S vng quay trc chnh (S...)
Trn mTrn my tiy tin sn s ddng sng svng quay trvng quay trc chc chnh vnh v ttc c cct i kt i km vm vii
ccc lc lnh:nh:
G96 S120G96 S120 {{TTc c cct v = 120 m/pht v = 120 m/phtt}} G97 S1000G97 S1000 {{SSvng quay trvng quay trc chc chnh n = 1000 v/phnh n = 1000 v/phtt}}
Trn mTrn my phay chy phay ch ss ddng sng svng quay trvng quay trc chc chnhnh
S1000S1000 {{SSvng quay trvng quay trc chc chnh n = 1000 v/phnh n = 1000 v/phtt}}
Lng chy dao (F) Trn mTrn my tiy tin sn s ddng lng lng chng chy dao vy dao vi ci cc n vc n v khkhc nhauc nhau
G94 F120G94 F120 {{LLng chng chy dao = 120 m/phy dao = 120 m/phtt}}
G95 F0.25G95 F0.25 {{LLng chng chy dao = 0,25 mm/vngy dao = 0,25 mm/vng}}
Trn mTrn my phay chy phay ch ss ddng sng svng quay trvng quay trc chc chnhnh
F1000F1000 {{LLng chng chy dao = 1000 mm/phy dao = 1000 mm/phtt}}
Dng c ct (T..)
BiBiu thu th vv trtr cca da dng cng c cct trong ht trong hp tp tch daoch dao T01T01
Lp tr
tr
nh theo k
h theo k
ch th
h th
c tuy
tuy
t
i,
,
tng
ng
i
-
7/26/2019 Lp Trnh Gia Cng Trn My iu Khin S
32/54
3232
Lp trnh theo kch thc tuyt i
Lp trnh theo v tr ca cc im ch.
im ch c gi tr to lun gn vi im 0 ca chi tt W (gc
kch thc xc nh v tr ca cc im ch)
Gc to c nh l im 0 ca chi tit W
Chc nng dch chuyn cho dng lp trnh ny l G90
Lp tr
tr
nh theo k
h theo k
ch th
h th
c tuy
tuy
t
i,
,
tng
ng
i
-
7/26/2019 Lp Trnh Gia Cng Trn My iu Khin S
33/54
3333
Lp trnh theo kch thc tng i
im ch c gi tr to lun gn vi v tr ca dng c ct n
trc
Gc to thay i lin tc
ng dng ch yu i vi cc chu trnh v cc chng trnh con
Cc d
d
ng n
g n
i suy
suy
-
7/26/2019 Lp Trnh Gia Cng Trn My iu Khin S
34/54
3434
c im chung
Dng tnh ton cc im trung gian trn qu o gia cng, n l
mt cng phn mm cng lin tc cc on gia tng bng nhau
theo cc gi tr to ca im xut pht Pa
Ni suy ng thng G00: Dch chuyn nhanh khng ct ca dng c t m hin ti ca
n n im tip theo c lp trnh vi tc ti a
G00 XG00 X YY ZZ G01: Dch chuyn dng c ct t im hin ti ca n n mt im
tip theo c lp trnh trn mt ng thng vi lng chy dao
gia lp trnh
G01 XG01 X YY ZZ FF
Cc d
d
ng n
g n
i suy
suy
-
7/26/2019 Lp Trnh Gia Cng Trn My iu Khin S
35/54
3535
Ni suy cung trn
G02/G03: Dch chuyn theo/ngc chiu kim ng h
G02/G03 XG02/G03 XYYZZIIJJKKFF
X, Y, Z: ToX, Y, Z: Toiim cum cui ci ca cung trna cung trn
I, J, K: ToI, J, K: Totng tng i ci ca tm cung trn theo ha tm cung trn theo hng trng trc X, Y, Z soc X, Y, Z sovvi ii im m u cu ca cung trna cung trn
Cc d
d
ng n
g n
i suy
suy
-
7/26/2019 Lp Trnh Gia Cng Trn My iu Khin S
36/54
3636
V d
-
7/26/2019 Lp Trnh Gia Cng Trn My iu Khin S
37/54
3737
CC CHCHC NNG HINNG HIU CHCHNHH
Cc ch
ch
c nng hi
nng hi
u ch
ch
nh
h
-
7/26/2019 Lp Trnh Gia Cng Trn My iu Khin S
38/54
3838
c im
Hiu chnh kch thc ca dng c nh chiu di, bn knh dao
H iu khin s tnh ton li qu o chuyn ng ca dng c
theo cc gi tr hiu chnh
To ra chuyn ng chnh xc ca li ct dc theo ng vin giacng hoc cc im ph
Cc chc nng dch chuyn
HiHiu chu chnh chinh chiu du di dao (mi dao (mi khoan, phay, dao tii khoan, phay, dao tinn)) HiHiu chu chnh bnh bn kn knh dao(phay theo bin dnh dao(phay theo bin dngng))
HiHiu chu chnh bnh bn kn knh lnh li ci ct dao tit dao tin (tin (tinn))
HiHiu chu chnh vnh v trtr dao (vdao (v trtrnh lnh li ci ct khi tit khi tinn))
Hi
i
u ch
ch
nh chi
h chi
u d
d
i dao
dao
-
7/26/2019 Lp Trnh Gia Cng Trn My iu Khin S
39/54
3939
Phay,
khoan
Tin
c im
B chiu di dao l quy trnh hiu chnh khong cch gia chiu di
lp trnh ca dao v chiu di thc ca dao
Gi tr hiu chnh ca b nh dng c chn c cng thm vo
gi tr Z (vi phay, khoan) hoc X, Z (vi tin) c lp trnh cch n du
M lnh
G43 BG43 B
chichi
u du d
i dao dngi dao dng
G44: BG44: B chichiu du di dao mi dao m
G49: HuG49: Hu bb bb chichiu du di daoi dao
Hi
i
u ch
ch
nh chi
h chi
u d
d
i dao
dao
-
7/26/2019 Lp Trnh Gia Cng Trn My iu Khin S
40/54
4040
Cch tnh ton hiu chnh
Cng thc tnh hiu chnh chiu di dao (c tnh n x dch im
chun)
Z
d
= W
z
+ Z
t
+ H
ZZdd: Kho: Khong cng cch dch dch chuych chuyn theo trn theo trc Zc Z WWzz: Gi: Gi trtr toto llm vim vic c i vi vi tri trc Z (Thic Z (Thit lt lp bp bng lng lnh G54nh G54))
ZZtt: V: V trtrch trn trch trn trc Z (toc Z (to Z)Z)
H: GiH: Gi trtr cca sa sbbH H cc p dp dngng
V d -Wz = 0.02, v tr ch trn trc Z = 1.0, gi tr b H03 tng
ng vi -7.47 ta c khong dch chuyn thc ca dao s l
Zd = +0.02) + +1.0) + -7.47) = -6.45
V d -Wz = 0.02, v tr ch trn trc Z = -0.625, gi tr b H01 tng
ng vi -8.28 ta c khong dch chuyn thc ca dao s l
Zd = +0.02) + -0.625) + -8.28) = -8.885
Hi
i
u ch
ch
nh chi
h chi
u d
d
i dao
dao
-
7/26/2019 Lp Trnh Gia Cng Trn My iu Khin S
41/54
4141
Phng php xc nh chiu di dao
Xc lp trc chiu di dao cch xa my
Phng php o xc lp bchiu di dao
Phng php o cinXc lp chiu di dao ct bnngoi my Gim thi gian g lp Dng g dao o lm tngchi ph
Yu cu sdng sx dch imchun G54-G59
Phng php o ph binXc lp chiu di dao ct trong
qu trnh g lp Tng thi gian glpKhng s dng sx dch im
chun G54-G59, s b chung cxc lp theo Z0.0000
Hi
i
u ch
ch
nh chi
h chi
u d
d
i dao
dao
-
7/26/2019 Lp Trnh Gia Cng Trn My iu Khin S
42/54
4242
S dng chiu di dao chnh
Hiu chnh chiu di dao sdng phng php chiudi dao chnh. T02: dao chnh vi xc lp H02 = 0.0
Hi
i
u ch
ch
nh chi
h chi
u d
d
i dao
dao
-
7/26/2019 Lp Trnh Gia Cng Trn My iu Khin S
43/54
4343
S dng chiu di dao chnh
Phng php ny c th rt ngn thi gian r rt
Dao chnh chn thng l dao di nht
Qui trnh xc lp:
1. Lp dao chnh vo trc chnh
2. Chu n 0 cho trc X v m bo so trn mn hnh tng i l
Z0.000
3. o chiu di dao chnh. Sau khi chm vo b mt o, ginguyn daovtr .
4. ng k gi tr tng ng vi gi trx dch theo Z dng trong
G54-G59 (Z m)
5. Trong khi dao chnh chm vo b mt o, xc lp gi trtrc Z tng
i l 0
6. o tng dao cn li ly tnh dao chnh thay v tzero ca my
7. Nhp cc gi tro vo chs b H trn mn hnh (mang gi trmvi mi dao ngn hn dao chnh)
Hi
i
u ch
ch
nh b
h b
n k
k
nh dao khi phay bin d
h dao khi phay bin d
ng
g
-
7/26/2019 Lp Trnh Gia Cng Trn My iu Khin S
44/54
4444
Hi
i
u ch
ch
nh b
h b
n k
k
nh dao khi phay bin d
h dao khi phay bin d
ng
g
-
7/26/2019 Lp Trnh Gia Cng Trn My iu Khin S
45/54
4545
c im
Khi khng c chc nng hiu chnh, to ra mt bin dng vi
kch thc nh mong mun, ngi lp trnh phi thit lp mt bin
dng ng dng vi bin dng chi tit theo khong cch bng bn
knh dao. Vi chc nng hiu chnh bn knh dao ny, khi phay cc bin
dng, h iu khin s t ng tnh ton qu o chuyn ng ca
tm dao sao cho c th to ra bin dng ca chi tit cch xa tm
dao mt khong bng bn knh dao
Gi tr hiu chnh lu tr trong b nh v d liu dao s c gi ra
khi c lnh hiu chnh
Hi
i
u ch
ch
nh b
h b
n k
k
nh dao khi phay bin d
h dao khi phay bin d
ng
g
-
7/26/2019 Lp Trnh Gia Cng Trn My iu Khin S
46/54
4646
Cc t lnh hiu chnh
G41: Dao bn tri ng vin gia cng
G42: Dao bn phi ng vin gia cng
G40: Hu b lnh hiu chnh chn
Hi
i
u ch
ch
nh b
h b
n k
k
nh
h
nh l
h l
i c
c
t dao ti
dao ti
n
-
7/26/2019 Lp Trnh Gia Cng Trn My iu Khin S
47/54
4747
c im
nng cao tui bn dao tin v cht lng b mt gia cng ngita lm trn nh li ct dao tin. Bn knh nh li ny ct dnn sai lch ng vin gia cng ca chi tit
H iu khin CNC loi b cc sai lch ny bng lnh b bnknh nh li ct.
Gi tr ca bn knh nh li ct c nhp vo trong h iu khinnh mt gi tr hiu chnh v s c h iu khin x l khi gi
lnh hiu chnh
Hi
i
u ch
ch
nh b
h b
n k
k
nh
h
nh l
h l
i c
c
t dao ti
dao ti
n
-
7/26/2019 Lp Trnh Gia Cng Trn My iu Khin S
48/54
4848
Phng thc hiu chnh
Khi gi chc nng hiu chnh, h iukhin s t ng tnh ton qu o tmca nh li ct dao tin theo bin dngca chi tit v cch mt khong bng bn
knh ca li ct.
Cc vect hiu chnh khc nhau theo ccgc phn t
-
7/26/2019 Lp Trnh Gia Cng Trn My iu Khin S
49/54
4949
X D
D
CH I
H I
M CHU
CHU
N
X d
d
ch i
h i
m chu
chu
n
-
7/26/2019 Lp Trnh Gia Cng Trn My iu Khin S
50/54
5050
c im
X dch im chun c s dng ng nht im 0 ca chi tit
hay chng trnh trng vi im 0 ca my.
KhoKhong cng cch tch tiim 0 cm 0 ca chi tia chi tit t n in im 0 cm 0 ca ma my ngy ngi ta gi ta gi li l
khokhong cng cch x dch x dch ich im chum chun.n. Sai lch v tr ny c xc nh v ci t vo trong b nh hiu
chnh cho x dch im chun
Khi gi lnh x dch im chun, h iu khin s cng thm vo
cho cc gi tr lp trnh cc gi tr hiu chnh ny
GGi li lnh x dnh x dch ich im chum chunn G54G54G59G59
HuHu bb llnhnh G53G53
X d
d
ch i
h i
m chu
chu
n i
i
u ch
ch
nh
h
-
7/26/2019 Lp Trnh Gia Cng Trn My iu Khin S
51/54
5151
c im
L x dch im chun lu gi trong b nh hay ni cch khc
l x dch im chun iu chnh
Cc kch thc x dch chnh xc c xc nh hoc bng cc
thit b o hoc do ngi vn hnh my trc khi tin hnh giacng thc hin v c ci t vo b nh hiu chnh
X dch im chun iu chnh c ngha ln khi gia cng trn cc
bn my.
NgNgi ta ci ta cn thin thit cho gia cng 4 mt cho gia cng 4 mt ct ca chi tia chi tit,t, 44 iim 0 cm 0 ca chi tia chi titt
khkhc nhau tc nhau tt ct c ccn n c dc dch chuych chuyn n n in im 0 cm 0 ca ma myy
X d
d
ch i
h i
m chu
chu
n i
i
u ch
ch
nh
h
-
7/26/2019 Lp Trnh Gia Cng Trn My iu Khin S
52/54
5252
V d
X d
d
ch i
h i
m chu
chu
n lp tr
tr
nh
h
-
7/26/2019 Lp Trnh Gia Cng Trn My iu Khin S
53/54
5353
c im
Khi dng x dch im chun lp trnh, cc gi tr x dch phi c
bit r trong chng trnh.
Cc gi tr x dch im chun lp trnh trong chng trnh gia cng
khng c ci t vo trong b nh hiu chnh Khi gi x dch im chun lp trnh h iu khin s cng thm
vo cc gi tr x dich c ch n du cho tt c cc gi tr to
.
X dch im chun lp trnh c ngha khi cn lp li chng trnh
gia cng nhiu ln cc v tr bt k trn chi tit
khoan ckhoan cc dy lc dy l giging nhaung nhau
gia cng cgia cng cc c ng ving vin nh nhaun nh nhau
X d
d
ch i
h i
m chu
chu
n l
l
p tr
tr
nh
h
-
7/26/2019 Lp Trnh Gia Cng Trn My iu Khin S
54/54
5454
V d
top related