Mastercam groove milling

[ek79989]

Can somebody recommend the most efficient way to perform a simple groove

operation with this dimensions 1.5 mm wide and 3 mm deep on top surface of

the aluminum plate. Groove goes kind of circular shape on top of the plate.

When I perform pocket creation toolpath with mastercam, the setup sheet

says that it will take like 100 hours plus. Any suggestions? I needa little

help, please.

Thank you in advance

[Thad]

What is your feed rate?

 

Thad

[Brendan P]

It sounds like you should be using the contour

module to me. Why would you pocket something that is only 1.5 mm ?

[ek79989]

I have tried contour option and it still says it will take like 8 hrs.

[Brendan P]

Again like Thad said:

What are your speed and feed rates?

Are you doing depths of cut? .001dp. each pass?

What dia. roughly are you cutting for your groove?

This all adds to your time.

 

Also,forget what your "set up sheet" is saying...

What is the time when you backplot it?

Is it the same???

 

[ 01-27-2003, 10:44 PM: Message edited by: BUCKET HEAD ]

[McRae]

Post a sample on the FTP and we will have a look. Depth and width are ok - but what about the other dimensions (ie diameter). I would use a 1.0 mm 2 flute cutter as fast as the machine will spin it and ramp to the 3 mm depth taking .75mm per trip around the part and then use a contour to clean up the sides to width (if width is critical) If width is open - use a 1.5mm 2 flt and contour around the center - no comp and ramp to depth.

 

Doing this I had a cycle time of 1.5hrs to do the motion at the following cut parameters

Dia - 102mm (4")

Depth - 3mm (.125")

Spindl - 7000RPM

Feed - 355mm/m (14.0ipm)

 

Help is here if you need it.

[mikhael gutman]

Hi !

It easy. Just use contour- Ramp toolpath.

Works greate.

[ek79989]

I have posted the file in ftp under mc9 files folder. The toolpath in problem is green contour lines. If anybody can suggest anything to solve my problem I would really appreciate it.

thanks

[Eric S.]

What is it called?

 

[ 01-28-2003, 05:13 PM: Message edited by: Eric Sman ]

[ek79989]

Stupid me, the file name is top-route-1st

[McRae]

Here's my solution.

 

Size On (1.5mm) Carbide 2 flute high positive cutter (Niagara) and then use one of the chains and offset it half the width of the slot. Use this new chain inside a contour tool path. No cutter compensation and select the ramp option and use a value of .75mm per depth. select the depth from the part or key in -3.mm. Feedrate and spindle speed will be almost as fast as the machine will travel.

 

Do this and you wil definitly be less than your 8hrs. Depending on cutting parameters - I would say around 30minutes for all slots complete. This is only a 300mm wide part!

[ek79989]

I have tried your recommendations and here is what came out when I used backplotting the process:3hrs 45 min just to cut those damn 1.5 mm grooves. Feedrate I used is 50 mm/min with taking .75 mm per cut. Its still seems to be way off. What did I miss?