auger screw

[Gary]

Just looking for how you guys would tackle this part. I have axis to a 4ax haas. Part is about 14long and shaft diameter is .374 lobe diameter is .860. Material is s7 heat treated to 60rc when done. Just looks like a chattering pain to me.

Any ideas would be appreciated.

 

Gary

 

http://www.emastercam.com/board/uploads/monthly_01_2011/post-735-0-97816000-1294236014_thumb.jpg

[ThRaSH]

Hard to see any detail in image, but does your print give you a degree of rotation? If so this would be your 4th axis movement.

Maybe your looking for machining strategy...We mill flutes on .625 diameter drills about that long and use a home made "steady-rest".

Basically it's a 3 piece design - Upper piece of block steel has a V in it which helps in holding your round stock from moving around.

The bottom of the V piece has two holes drilled in it for two pieces of round stock that are held in place with set screws. The 3rd piece

is the base block of steel that gets mounted to the table. This piece of steel has thru holes for those 2 pieces of round stock to pass thru.

This is all done for adjustability. Once you've adjusted the V up to your part everything is tightened down with set screws and your work piece

is supported. It doesn't eliminate all chattering, but helps in reducing it a lot. Just an idea...

[Gary]

There is a pitch callout as well as the radius at top and bottom of flute. Print calls for .3745 +.0000-.0005. I am hoping that is just for the ends where maybe a bearing goes, I am waiting to here back. Just trying to get a pre planning done. Tbe radius on top is also required to be +-.005

[NOTW Programmer]

Hi Guys,

 

I actually need help on a similar part, I cant seem to get to the roughing. I used a 4ax Swarf to finish the wall; but roughing has proven difficult. Ill upload it on the FTP under X5_files as MasaAuger.MCX-5. Thx !

[Greg Williams]

I would use the rolldie Chook for the roughing

[Reko]

I'm just throwing this out there, but it seems like that part could be turned on a CNC Lathe way more efficiently than milled on a 4th axis.

[Greg Williams]

Is this what you want to do?

 

[NOTW Programmer]

Is this what you want to do?

 

I have a part very similar to that one, Im having trouble roughing it out. I used 5ax Swarf to finish the wall, but I have tried 5ax flow and Rotary w/o success. I uploaded the MCX-5 to the FTP its called; Masa_Auger.MCX-5.

 

Thx ! Beforehand !

[NOTW Programmer]

I have a part very similar to that one, Im having trouble roughing it out. I used 5ax Swarf to finish the wall, but I have tried 5ax flow and Rotary w/o success. I uploaded the MCX-5 to the FTP its called; Masa_Auger.MCX-5.

 

Thx ! Beforehand !

Is anyone gonna be able to point me in the right direction. I really need advise on how to approach this beast. I have the finish pass using swarf but I am having gouging issues while roughing. Please Help !!

 

 

[Roger Peterson]

a simple 2d pocket with axis substitution works very well to rough out an auger. you will need to "unroll" your geometry so it is flat using xform roll (positioning = -90 to be correct). If the floor is tapered you will need to use something other than a 2d pocket with axis substitution.

 

 

HTH

[NOTW Programmer]

a simple 2d pocket with axis substitution works very well to rough out an auger. you will need to "unroll" your geometry so it is flat using xform roll (positioning = -90 to be correct). If the floor is tapered you will need to use something other than a 2d pocket with axis substitution.

 

 

HTH

Roger,

 

Thx a bunch.....that worked out really well. I appreciate the help, one of my many bosses had been pressuring me to get one of these done for R & D; its finally here. I have to modify the geomtry in order to clean the edge of the part, but everything looks great.

 

I took the solid, boolean added the shaft and flight, created a curve on all open edges, Xform Unroll, voila ! I had the geometry necesary to pocket and wall finish this baby using Axis substitution. Thx for your Help !!!

 

 

[Roger Peterson]

I'm glad it worked out for you, post pics of the finished part if you can. luckily your minor diameter is constant, they get more difficult if it is tapered.

[Chris Rizzo]

do you mind putting the finished file up on the ftp? or at least the unrolled portion and toolpath? I'm having trouble selecting the geo to unroll to get the pocket cut. Seems simple but it just wants to cut the centerline of the auger.

[Code_Breaker]

I sent you a mesage and put your file UHMW_AUGER-2.MCX-5 on the FTP site ... I didn't program the whole thing ... that's your job ...

 

But, I tackled then everyone else ... only did the finishing toolpath with 5/8 ball EM using Parallel to Multiple Curves ... play with the parameters as needed ... this is a very simple and fun toolpath ...

 

Take it from there ...

 

HTH

 

BTW ... this works ever if minor is tapered

[NOTW Programmer]

I sent you a mesage and put your file UHMW_AUGER-2.MCX-5 on the FTP site ... I didn't program the whole thing ... that's your job ...

 

But, I tackled then everyone else ... only did the finishing toolpath with 5/8 ball EM using Parallel to Multiple Curves ... play with the parameters as needed ... this is a very simple and fun toolpath ...

 

Take it from there ...

 

HTH

 

BTW ... this works ever if minor is tapered

Hi Don,

 

I got your message, I will look at the file tomorrow. The roughing is finally complete, I will take a look at the finsih toolpath you provided it might be better than the one I made. Thx !

 

I will post the file as soon as I complete the program for everyone to grab on the FTP. Thx ! Everyone !!!