minimum thickness between holes in aluminum plate
minimum thickness between holes in aluminum plate
(OP)
Is there a guideline for the minimum distance between holes bored into a given thickness of aluminum plate?
We have a 1/16" thick plate that is ~7" diameter round of aluminum that requires 12 holes. It was suggested:
12X diameter 1.350"+- .005" thru, equally spaced at 30 degrees apart located on a diameter 5.400" BC.
So the hole centers are located radially from the center of the plate, but at these dimensions, the thickness between the holes is quite small. I want to stagger the holes, but was wondering if there is a rule for wall thickness between holes in this situation.
Thanks.
We have a 1/16" thick plate that is ~7" diameter round of aluminum that requires 12 holes. It was suggested:
12X diameter 1.350"+- .005" thru, equally spaced at 30 degrees apart located on a diameter 5.400" BC.
So the hole centers are located radially from the center of the plate, but at these dimensions, the thickness between the holes is quite small. I want to stagger the holes, but was wondering if there is a rule for wall thickness between holes in this situation.
Thanks.





RE: minimum thickness between holes in aluminum plate
But usually you can't miss making the mtl between the holes the same as the radius of the holes.
Maybe others here know what those specs are.
Chris
Sr. Mechanical Designer, CAD
SolidWorks 05 SP1.1 / PDMWorks 05
ctopher's home site
RE: minimum thickness between holes in aluminum plate
A lot of the answer depends on what you need and how you plan to achieve the holes. From my aircraft days we used an edge distance of 1.5t (t=material thickness) between the edge of a hole and the edge of the part (or in this case another hole of appreciable size). This was for pullout reasons. Other reasons for edge distance would be the method of manufacture. Edge distance requirements for punching would be different from drilling and laser cutting.
In order to give you a meaningful answer you'll need to tell us a bit more about the application (loads, life expectancy, environment, what's in the holes, etc.) and the method of manufacture. It sounds like you have a bit of decision lattitude still since you mention staggering. How fixed or flexible is your design?
- - -Dennyd
RE: minimum thickness between holes in aluminum plate
http://www.iperf.org/perfhand.htm
RE: minimum thickness between holes in aluminum plate
RE: minimum thickness between holes in aluminum plate
RE: minimum thickness between holes in aluminum plate
distance between holes where D is the
diameter of the bolt or hole. The
other consideration would be to check
out the wrench od to make certain you
have the clearance for a wrench and
the bolt head with washer. This assumes
materials are similar.
RE: minimum thickness between holes in aluminum plate
Are you putting nuts, washers and bolts in these holes or is this plate a location device for D-cell batteries?
You hardware will overlap in the current configuration.
Tofflemire
RE: minimum thickness between holes in aluminum plate
ebegt
RE: minimum thickness between holes in aluminum plate
Kenneth J Hueston, PEng
Principal
Sturni-Hueston Engineering Inc
Edmonton, Alberta Canada