Need a bump in the right direction from a PRO

[Deon Gerber]

Hi

Newbie asking PRO HELP!!!

Jumping into deep water.

 

First I need to clarify. I do not own a Mastercam seat but have access at my day job.

 

The trunnion is selfmade mod(for cyl.Head porting)on a old haas trunnion .

 

Here follow some the code from my Haas 5 Axis post were one is supposedly being able to change the axis alignment of your rotary axis combinations.

 

This is for a normal trunnion. A rotating around the X Axis and B rotating around the Z Axis.

 

I need to change this to a rock and roll type trunnion for cyl.head porting.....

So A should stay the same but B or C should Rotate(Rock) around the Y Axis.

At least that is what my head thinks

 

I already tried to change the Machine definition and machine control to set the appropriate rotations but the out put stays the same with one device rotating around the Z Axis.

 

A comment from Superman taken from a nother thread on the net........

 

H, we have similar transom, but the B is aligned along the X axis, which makes it an A address, limits are A20 to A-110

 

When our 4th axis=0, the 5th axis is perpendicular to the Z, this makes it a C axis address ( C rotates around Z ), limits are C0 to 360

 

This could be your problem ?

 

Remember to use the WCS of the part drawn in TOP view of the setup ( with all axes set to zero ), and T/C planes to be how the tool "sees" the part relative to this WCS"

 

Maybe a similar problem........

 

I am sooooooooooooo confused!!!!!!!!!!!

 

 

I need help with changes to the following line numbers..........

 

N16

N32

N33

N37

N38

N42 to N45

And any other changes you might think necessary.

At least this is what I think might do the trick.

I have tied various combinations but just cant seem to get it to work.

This post is working perfect on a normal trunnion.

 

Another though.......... could the way I draw the part influence the tool path??????????

 

I have really been trying for almost 4 weeks before asking for help. Comparing the Haas 5 Axis post with the Fanuc 5 Axis post shows they come from the same writer with some small changes. Tried both but still no luck.

 

N1 # --------------------------------------------------------------------------

N2 # 5 Axis Rotary Settings

N3 # --------------------------------------------------------------------------

N4 #Assign axis address

N5 str_pri_axis : "B"

N6 str_sec_axis : "A"

N7 str_dum_axis : "C"

 

N8 #Toolplane mapped to top angle position strings

N9 str_n_a_axis : "B"

N10 str_n_b_axis : "A"

N11 str_n_c_axis : "C"

 

N12 #Misc. String settings

N13 sopen_prn : "(" #String for Open Parenthesis "("

N14 sclose_prn : ")" #String for Close Parenthesis ")"

 

N15 #Machine rotary routine settings

N16 mtype : 0 #Machine type (Define base and rotation plane below)

N17 #0 = Table/Table

N18 #1 = Tilt Head/Table

N19 #2 = Head/Head

N20 #3 = Nutator Table/Table

N21 #4 = Nutator Tilt Head/Table

N22 #5 = Nutator Head/Head

 

N23 head_is_sec : 1 #Set with mtype 1 and 4 to indicate head is on secondary

 

N24 #Preferred setup is pri. zero matches sec. zero/direction

N25 #Zero machine and determine the planes perp. to axis rotations

N26 #These plane combinations are valid:

N27 #Primary plane XY XZ YZ

N28 #Secondary or XZ XY XY

N29 #Secondary YZ YZ XZ

 

N30 #Primary axis angle description (in machine base terms)

N31 #With nutating (mtype 3-5) the nutating axis must be the XY plane

N32 rotaxis1$ = vecy #Zero

N33 rotdir1$ = -vecx #Direction

 

N34 #Secondary axis angle description (in machine base terms)

N35 #With nutating (mtype 3-5) the nutating axis and this plane normal

N36 #are aligned to calculate the secondary angle

N37 rotaxis2$ = vecz #Zero

N38 rotdir2$ = vecy #Direction

 

N39 #NOTE: Use of 'top_map' requires the dealer match the

N40 # above settings below. These must match initial settings!!!

N41 p_nut_restore #Postblock, restores original axis settings

N42 result = updgbl(rotaxis1$, "vecy") #Zero

N43 result = updgbl(rotdir1$, "-vecx") #Direction

N44 result = updgbl(rotaxis2$, "vecz") #Zero

N45 result = updgbl(rotdir2$, "vecy") #Direction

 

N46 #Nutating machine (mtype 3-5) describe the plane that the nutated axis

N47 #lays in, this is the plane perpendicular to the primary axis and

N48 #secondary axis

N49 nut_ang_pri$ : -45 #Nutating head secondary axis angle from machine Z positive

 

N50 #Tool length, typically for head/head machine, both set to zero disables

N51 #Applied to the tool length, RA applies this along the tool

N52 use_tlength : 0 #Use tool length, read from tool overall length

N53 #0=Use 'toollength' var, 1=Mastercam OAL, 2=Prompt

N54 toollength : 0 #Tool length if not read from overall length

N55 shift_z_pvt : 0 #Shift Z by tool length, head/head program to pivot (Z axis only)

N56 #0=Pivot, 1=Pivot-Z, 2=Tool Tip Programming (without zero length)

N57 #Option 2, So we can still take advantage of brk_mv_head feature

N58 add_tl_to_lim : 0 #Add tool length after intersecting limit, always

N59 #on if limit from stock

N60 use_g45 : 1 #Use G45 offset with right angle head (RA)

N61 g45_of_add : 30 #Add this number to tool length no. for G45 offset number

 

N62 #Axis shift

N63 shft_misc_r : 0 #Read the axis shifts from the misc. reals

N64 #Part programmed where machine zero location is WCS origin-

N65 #Applied to spindle direction, independent of RA

N66 #Table/Table -

N67 #Offset of tables to secondary axis relative to machine base.

N68 #Tilt Head/Table - Head/Head -

N69 #Part programmed at machine zero location-

N70 #Offset in head based on secondary axis relative to machine base.

N71 #Normally use the tool length for the offset in the tool direction

N72 saxisx : 0 #The axis offset direction?

N73 saxisy : 0 #The axis offset direction?

N74 saxisz : 0 #The axis offset direction?

 

N75 r_intersect : 0 #Rotary axis intersect on their center of rotations

N76 #Determines if the zero point shifts relative to zero

N77 #or rotation with axis offset.

 

N78 #Nutating axis shift, used when calculations are based on mtype 3 or greater

N79 #'top_map' and toolplane tool paths use the axis shifts above, 5 axis use these

N80 n_saxisx : 0 #The axis offset direction?

N81 n_saxisy : 0 #The axis offset direction?

N82 n_saxisz : 0 #The axis offset direction?

 

N83 n_r_intrsct : 0 #Rotary axis intersection with nutating (normally zero)

 

N84 #Force rotary axis reset at toolchange and other options

N85 frc_cinit : 1

N86 typ3_brk_evn : 0 #Windup limit, use even revolution break position

N87 #Primary and/or secondary

N88 brk_mv_head : 0 #Break the 5 axis moves to remove gouge

N89 brk_max_ang : 0 #'brk_mv_head' maximum angle move, applied if chordal

N90 #calculation angles moves are greater (negative disables)

N91 skp_rdnt_ck : 0 #Skip 'brk_max_ang' redundant angle check

 

N92 top_type : 4 #With 'top_map' select the top toolplane output

N93 #0 = Post selects G7 rotation axis

N94 #1 to 4, user selected G7 rotation axis

N95 #1 = Primary C : Y zero, Secondary A

N96 #2 = Primary C : -X zero, Secondary B

N97 #3 = Primary C : -Y zero, Secondary A

N98 #4 = Primary C : X zero, Secondary B

N99 #5 = Custom settings, ptop_type_ax and ptop_type_lim

 

The toolpaths inside mastercam shows up correct but if you load the code into Cimco or moduleworks with a rock and roll setup the display go's hay-wire. Cimco canot be set up for the rock and roll setup so the toolpath display is hay-wire no matter how you change the post. Putting my trust in Moduleworks shows the toolpath only wrong when changing the Moduleworks machine setup to rock and roll.

I do realise the post is madeup of two parts(*.pst and *.psb)I can access the .pst but not the .psb.

Scared to try it out on the mill, dont want to crash on a moonligthing job :-)

 

Thanks for any help in advance

 

Deon

[Greg Williams]

The Problem here is that HAAS does not follow the standard rules. There B axis should be a C axis,

 

So you have this A and C

 

 

And you want this B and A?

[Deon Gerber]

Hi Greg

 

Thanks for the reply. You are spot on. Now if you say Haas does not follow the standard rules what do you meen by that. Witch axis is A and witch Axis is B in the setup I need, maybe I've got that wrong.

Can't the axis numbers be changed in the post.Ive got movement on all the right axis numbers but the left right rocking throw the toolpath out.

The post is a generic Haas 5Axis post. I have also tried the generic Fanuk 5 Axis post as said in my first comment but as stated there are very few differences when you compare the posts.

 

 

This is and exract from the post

 

#Table/Table configuration:

# All 3 axis offsets are supported.

#

#Table/Head configuration (only primary table/secondary head):

# Axis offsets are supported on primary axis.

#

#Head/Head configuration:

# All 3 axis offsets are supported for non-nutating machines.

# Only the primary to secondary axis offset is supported for nutating machines.

 

Table/Table configuration All 3 axis offsets are supported.(Does this mean rotary or linear)

 

Acording to the following what do they mean by #Zero and "# direction"

 

#Machine rotary routine settings

mtype : 0 #Machine type (Define base and rotation plane below)

#0 = Table/Table

#1 = Tilt Head/Table

#2 = Head/Head

#3 = Nutator Table/Table

#4 = Nutator Tilt Head/Table

#5 = Nutator Head/Head

 

head_is_sec : 1 #Set with mtype 1 and 4 to indicate head is on secondary

 

#Preferred setup is pri. zero matches sec. zero/direction

#Zero machine and determine the planes perp. to axis rotations

#These plane combinations are valid:

#Primary plane XY XZ YZ

#Secondary or XZ XY XY

#Secondary YZ YZ XZ

 

#Primary axis angle description (in machine base terms)

#With nutating (mtype 3-5) the nutating axis must be the XY plane

rotaxis1$ = vecy #Zero

rotdir1$ = vecx #Direction

 

#Secondary axis angle description (in machine base terms)

#With nutating (mtype 3-5) the nutating axis and this plane normal

#are aligned to calculate the secondary angle

rotaxis2$ = vecz #Zero

rotdir2$ = vecx #Direction

 

#NOTE: Use of 'top_map' requires the dealer match the

# above settings below. These must match initial settings!!!

p_nut_restore #Postblock, restores original axis settings

result = updgbl(rotaxis1$, "vecy")#Zero

result = updgbl(rotdir1$, "vecx")#Direction

result = updgbl(rotaxis2$, "vecz")#Zero

result = updgbl(rotdir2$, "vecx")#Direction

 

#Nutating machine (mtype 3-5) describe the plane that the nutated axis

#lays in, this is the plane perpendicular to the primary axis and

#secondary axis

nut_ang_pri$ : -45 #Nutating head secondary axis angle from machine Z positive

 

Thanks for trying to help

 

Deon

[Greg Williams]

You will need something like this for the MX55 above, The rotdir depends on the rotary +/- direction of your machine

 

B axis rotates around Y

A axis rotates around X

 

#Primary axis description (in machine base terms)

# A AXIS

rotaxis1$ = vecz

rotdir1$ = vecy

 

#Secondary axis description (in machine base terms)

# B AXIS

rotaxis2$ = vecz

rotdir2$ = vecx

[Deon Gerber]

Hi Greg

 

Thanks....Realy appreciate your time and effort to try and help.

 

I will double check those settings and report back.

At least I have another angle to look at this in an affort to get it working.

 

Your help is really appreciated.

 

Thanks

Deon

[Deon Gerber]

Hi Greg

 

Your the man. You gave me the bump I needed(I think)

Got every thing to display correctly. I changed the Primary Axis to B and the Secondary Axis to A and eureka!!!!!!!

Now to give it a dry run on the machine.

 

Thanks again for your Help.

 

Deon

[Greg Williams]

Ok cool. Please keep us posted

[mayday]

Bump

I'm trying to duplicate this same setup as the MX-55 photo with no luck on the correct output

I'm doing this on a Mazak with the A axis mounted to a large sine plate and locked at 10 degrees.

I have this setup in MC as you would with any standard 4 axis, rotary on the left side.

Trying to configure the generic 5 axis post with A rotating about X and secondary axis locked rotated around Y

Anyone able to help?

Thanks