51400700-100
咨询***：18506919598（卢工）
***：312782195
因为西门子系统在用户手写程序功能扩展方面比较强大，所以我厂一直都是自己开发循环配合西门子循环组合使用。因为西门子标准的循环要考虑很多问题，尤其是安全问题，这就制约了程序的功能，现***介绍下我厂***早开发的一个用户循环。
此循环开发之初是为了在镗孔时使刀具在距离***终深度一定距离时，自动地改变进给和转速。程序源代码（参数和标准循环顺序一样，各参数为返回平面、参考平面安全距离、***终深度坐标、孔深、距离***终坐标需要变换的距离、变换后的进给及变换后的转速）如下：
%_N_TMK_SPF
;$PATH=/_N_CUS_DIR
PROC TMK(REAL RTP,REAL
RFP,REAL SDIS,REAL DP,REAL
DPR,REAL RJS,REAL JSF,REAL JSS)
S***E SBLOF DISPLOF
;VERSION: 11.5.31 MAY 31, 2011
;CHANGE : 11.5.31 MAY 31, 2011
;DEVELOPER: KECHENGCUI
DEF REAL RBLS,RF,RJSF,RJSS
DEF AXIS A_3
DEF INT IPB5
DEFINE LX AS G01 G60 G90
DEFINE LY AS G00 G64 G90
A_3=$P_AXN3
RBLS=$P_S[1]
IF ($P_SUBPAR[2]==FALSE)
RFP=$AA_IW[$P_AXN3] SDIS=0
ENDIF
I F ($P_SUBPAR[4]<>TRUE)
AND($P_SUBPAR[5]==TRUE)
DP=RFP+DPR
ENDIF
IPB5=(RFP-DP)/ABS(RFP-DP)
LYAX[$P_AXN3]=SDIS*IPB5+
RFP
RF=$P_F
IF$P_SUBPAR[6]==TRUE
LXAX[A_3]=DP+RJS*IPB5；
IFJSF<0；
IFABS(JSF)<1
RJSF=ABS(JSF)*RF
ELSE
RJSF=RF/ABS(JSF)
ENDIF
ELSE
RJSF=JSF
ENDIF
IF($P_SUBPAR[8]==TRUE)
AND(JSS<0)
IFABS(JSS)<1
RJSS=ABS(JSS)*RBLS
ELSE
RJSS=RBLS/ABS(JSS)
ENDIF
ELSE
RJSS=JSS
ENDIF
IF$P_SUBPAR[8]==TRUE
LXAX[A_3]=DP FB=RJSF
S=RJSS
ELSE
LXAX[A_3]=DP FB=RJSF
ENDIF
ELSE
LXAX[A_3]=DP
ENDIF
G04S2
IFRBLS<>$P_S[1]
S=RBLSF=RF
ENDIF
IF ($P_SUBPAR[1]==TRUE)
AND($P_SUBPAR[2]==TRUE)
LYAX[A_3]=RTP
ENDIF
M17
上面程序只有一个减速的功能，下面是使用实例：
G54G90 G00 X0 Y0 Z100 D1
S300F60 M3
TMK(100,0,5,-50,,5,20,350)
M5
G00SUPA Z0 D0
M30
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