bedinger57
Plastic
- Joined
- Apr 9, 2018
Hi guys,
This is my first post here but I have long since lurked(with no username).
I recently started as a CAD Drafter and I am reverse engineering a tubing weldment so that we can have it CNC lasercut. This will be welded to a piece of machinery, and has thru holes to bolt other pieces to it. I was just looking for some guidance as far as what kind of clearance would be necessary for bolt holes.
The bolts used will be 3/8 cap screws. I was looking to use .39(.015 clearance)but my boss is very skeptical of this number and I don't want to be the new guy who gets 500 pieces made and then has to drill out every hole. I know .39 would be fine for flat plate but as this is tubing I know if each hole is slightly off depending on tolerances you could lose all clearance.
Sorry if this is unclear, it's nearing 5oclock and I'm dreaming of afterwork beers.
So....
1: What is a safe clearance for tubing thru holes? Don't want a ton of slop if possible.
2: I'm unfamiliar with tubing lasers, for thru holes will it actually pierce all the way thru the tubing or will it pierce one wall, rotate the work piece and pierce the opposite wall?
Sorry if this has been discussed before, I'll again pull the new card. TIA!
This is my first post here but I have long since lurked(with no username).
I recently started as a CAD Drafter and I am reverse engineering a tubing weldment so that we can have it CNC lasercut. This will be welded to a piece of machinery, and has thru holes to bolt other pieces to it. I was just looking for some guidance as far as what kind of clearance would be necessary for bolt holes.
The bolts used will be 3/8 cap screws. I was looking to use .39(.015 clearance)but my boss is very skeptical of this number and I don't want to be the new guy who gets 500 pieces made and then has to drill out every hole. I know .39 would be fine for flat plate but as this is tubing I know if each hole is slightly off depending on tolerances you could lose all clearance.
Sorry if this is unclear, it's nearing 5oclock and I'm dreaming of afterwork beers.
So....
1: What is a safe clearance for tubing thru holes? Don't want a ton of slop if possible.
2: I'm unfamiliar with tubing lasers, for thru holes will it actually pierce all the way thru the tubing or will it pierce one wall, rotate the work piece and pierce the opposite wall?
Sorry if this has been discussed before, I'll again pull the new card. TIA!