Rigid tapping

[Mark C]

Good evening all.

I need to modify my post to allow for rigid tapping. Machines are Kitamura verticals with Fanuc 0M controls. What I need to do is force it into high range with a S3000 (M3 optional) in the command line with the x & y move and then a M54 and the commanded spindle speed before the G84. I can do the m54, but how do I get the S3000?

Am currently using a slightly massaged version of MPFAN.

I am new at this shop and MasterCam is new for them as well

Any ideas would really help as i don't have the time to go in and try to figure it out myself and I'm getting tired of editing it all the time. Use the technology I always say

Thanks in advance

Mark

[ 12-12-2001: Message edited by: Mark C ]

[bryan.davis]

this should be a simple enough mod, can you post a sample of code as its currently generated and a sample as you would like it and Ill let you know what to change

[Mark C]

Thank you for your response

What I have now:

T4

M6

G54G0G90X1.Y0.S640M3

G43Z.2H4M8

G98G84Z-.5R.2F20.

G80

and so on

What I need is:

T4

M6

G54G0G90X1.Y0.S3000(M3 here optional)

G43Z.2H4M8

m54s640

G98G84Z-.5R.2F20.

G80

It's probably not too dificult to do but I just can't figure out how to get a different speed in the G54 line.

Thanks again for any help

Mark C

[postman]

Here's a couple of ideas. You could use a conditional branch to flag the alternate speed at the g54 line in your psof and ptlchg postblocks. If you allways want S3000 then you could use "drillcyc" variable to flag this. Such as

(code below shorteded for example)

if drillcyc=3, n, *sgwcs, "S3000", *spindle, e

else, n, *sgwcs, *speed, *spindle, e

or you could use a misc. real and set up a spindle speed override.

eg.

fmt S 4 m_speed # override spindle speed

m_speed = mr5

if mr5>0, n, sgwcs, m_speed, *spindle, e

else, n, sgwcs, *speed, *spindle,e

Hope this helps.

 

[GREG]

Weve the same problem . There is a way to set parameters in the control so you dont need the M53.

[bryan.davis]

Postmans suggestion looks OK, get the post to recognise that you are doing a rigid taping op and get it to force "S3000" onto the line as a literal and call up the actual speed on a latter line

[Allan Brown]

It's possible that your first move and spindle commands occur at the start of file and toolchange (like all posts based on V7 Mpfan and up). If this is the case, the type of drill cycle is not yet availalbe at that point. You'll have to use the 'next drill cycle' variable - nextdc:

if opcode = 3 & nextdc = 3, ...

getnextop needs to be initialized to 1.

For the M54, check out the use_pitch variable and associated logic in the Mpmaster post available on this site.

[ 12-14-2001: Message edited by: Dave Thomson ]

[Mark C]

Thank you for all the info.

Will give it a try on Monday.

Have a good weekend all!