'about tool length off set.'

nishanth (121.243.176.163) -

while giving the tool offset the tool must touch the job or we can give above the job i.e 1mm above from job.

Comment #1 Stevo1 from USA (Contact Member) -

What is your question?? When instating tool offsets via H(value) you must also give a Z value to instate. Most times you would program G43H#Z10 to move 10mm above Z0 and instate the tool. I however do not move the tool when setting the offset. Mistakes can be made. I always set my offset in my tool change program. That way they never have to be hard coded in the program and the operator never has to worry weather they put the correct H value with the correct tool in the spindle. What kind of control are you using. On fanucs you can take the current machine position #5043 - the tool length in the offset page and use that number as your Z in the G43 line and the tool will not move. I typically use variables to capture these numbers.

G90G43Z#5043(cancels offset NO TOOL MOVE)

#20=2(current tool in the spindle)

#21=#[2000+#20]+ #[2200+#20]

(#20 is now equal to tool length and wear)

G43Z[#5043-#20]H#20

(activates tool offset no tool move)

Stevo

Comment #2 Stevo1 from USA (Contact Member) -

Correction to third comment and last line of code

(#21 is now equal to tool length and wear)

G43Z[#5043-#21]H#20

Stevo

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