Bore Operation
Not applicable
11-15-2017
10:59 AM
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Hi Fusion 360 CAM Community!
I'm new to these forums so I apologise if I've posted this question in the wrong manner.
I know Fusion 360 is a very reliable program so I'm positive this is something I'm doing wrong. I recently built an Openbuilds cbeam based router. I'm using Fusion for CAD / CAM and bCNC for sending. My first real project is my router's sub-plate. It's a large piece of .5" cast aluminum that spans the entire length of my machine. I'm really only adding a bunch of strategically placed holes for attachment of waste board material and some t-track. I designed the plate in fusion and I'm working on it in sections with each section utilizing the same origin. I'm using the Bore option in fusion. All the holes I'm boring are to be 4mm in the end and I'm using a 3.175mm 2 flute end mill. I scribed my origin on the piece of cast plate before running the first bore operation and cycled .y machine a few times to make sure the position was repeatable. (Zero G54 WPOS on scribe mark, home machine then send machine to WPOS G54 zero and it was very repeatable). So I ran my first bore operation on the front half of the plate. I will have to remove the plate and flip it around and run basically a mirrored operation because the router can't reach the back part. Anyway, my zero is located at the center of one of the bore holes in the middle of the plate. After running the first bore operation, I sent the machine to return to WPOS zero and I noticed the end mill wasn't centered in the hole. It was off to one side by about .5mm. The only settings I changed were my cutting feed rate and pitch. I lowered the pitch because 1mm was too aggressive. I'm just wondering why my zero is off after running the operation. Is there a setting I should be looking at? I'm really sorry if this is a silly question. I'm really just trying to eliminate as many variables as possible before I tear the machine apart to inspect the and backlash nuts.
I'm new to these forums so I apologise if I've posted this question in the wrong manner.
I know Fusion 360 is a very reliable program so I'm positive this is something I'm doing wrong. I recently built an Openbuilds cbeam based router. I'm using Fusion for CAD / CAM and bCNC for sending. My first real project is my router's sub-plate. It's a large piece of .5" cast aluminum that spans the entire length of my machine. I'm really only adding a bunch of strategically placed holes for attachment of waste board material and some t-track. I designed the plate in fusion and I'm working on it in sections with each section utilizing the same origin. I'm using the Bore option in fusion. All the holes I'm boring are to be 4mm in the end and I'm using a 3.175mm 2 flute end mill. I scribed my origin on the piece of cast plate before running the first bore operation and cycled .y machine a few times to make sure the position was repeatable. (Zero G54 WPOS on scribe mark, home machine then send machine to WPOS G54 zero and it was very repeatable). So I ran my first bore operation on the front half of the plate. I will have to remove the plate and flip it around and run basically a mirrored operation because the router can't reach the back part. Anyway, my zero is located at the center of one of the bore holes in the middle of the plate. After running the first bore operation, I sent the machine to return to WPOS zero and I noticed the end mill wasn't centered in the hole. It was off to one side by about .5mm. The only settings I changed were my cutting feed rate and pitch. I lowered the pitch because 1mm was too aggressive. I'm just wondering why my zero is off after running the operation. Is there a setting I should be looking at? I'm really sorry if this is a silly question. I'm really just trying to eliminate as many variables as possible before I tear the machine apart to inspect the and backlash nuts.
Fusion