I tried your suggestion and at first glance it looked liked it had worked.

 

However closer scrutiny reveals when going from left comp to no comp

the insert goes on the diameter and cuts the element using the

center of the insert and instead of being comped to one side.

 

N0460G01X4.909Z-1.0472���������� 4.971-.062=4.909

N0470( SEMI-FINISH ID TO 4.971 DIAMETER )

N0480Z-10.25

N0490X4.971���� this should be X4.917 diameter.( �.054” difference. .054/2=.027+.004=.031 rad of the insert. )

N0500X4.917���� 4.917-4.909=.008/2=.004”/side

N0510Z-11.19

 

-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
Sent: Thursday, January 22, 2004 7:19 AM
To: Michael Senack; [EMAIL PROTECTED]
Subject: Re: [mfg-smartcam] A lathe G01 plunge in move is coded as a G02 move?
Importance: High

 


Change element 34 offset to none.

-Dave-


Sent by:        [EMAIL PROTECTED]

To:        <[EMAIL PROTECTED]>
cc:        

Subject:        [mfg-smartcam] A lathe G01 plunge in move is coded as a G02 move?




I’ve attached a .SH2 lathe file along with its coded file and its job setup file for a horizontal

lathe using a Fanuc 6T General Electric control. Early 80’s vintage stuff.

 

Hopefully the files will make it through.

If they do my question is…

 

On T15 element 34 in the shape file I have the boring bar plunging in .004” per side.

 

This is the code that SC generates for that .004”  plunge in move.

 

N0460G01X4.909Z-1.0472

N0470( SEMI-FINISH ID TO 4.971 DIAMETER )

N0480Z-10.25

N0490G02X4.917Z-10.2652I0.031   �why do I get this?

N0500( NEXT MOVE BORES ID TO 4.9790 DIA )

N0510G01Z-11.19

 

Why does SC output a G02 move for the .004” plunge in move?

 

For manual editing at the machine control due to taper problems

it is easier, and a lot less error prone to have a G01 move like so…

 

N0460G01X4.909Z-1.0472

N0470( SEMI-FINISH ID TO 4.971 DIAMETER )

N0480Z-10.25

N0490X4.917                 �this line should be G01

N0500( NEXT MOVE BORES ID TO 4.9790 DIA )

N0510G01Z-11.19

 

Any reasons why this occurs?

I do not have V11.5 lathe so I cannot see whether or not it happens when

coding with that package.

 

I am using the center of the rad on the insert tip, not the virtual tip

because that is my customer’s request.

 

 

Regards,

Michael Senack

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