Yes, understood. I currently don't use MMC modifiers in any of my work. I need to learn about it and start using it if applicable in designs.
Thanks everyone for all the help.
Hobbs101
Mechanical Design Engineer
How about this?
Hobbs101
Mechanical Design Engineerhttp://files.engineering.com/getfile.aspx?folder=6431f715-b83e-4d5a-8928-8a21fb7ea69d&file=snip_20160914131616.jpg
Hi all. Sorry for the lack of input. Kenat is correct, I'm asking for positioned centrally and oriented correctly. The JonSelby example does not position it centrally. The 300 dimns could be +/-10mm.
I like the Belanger example. I think this is pretty much what I'm after. See attached for my...
As far as I understand, my drawing positions the hole pattern (not specifically the holes, but the complete hole pattern) on the centre lines of the plate.
On second thoughts, I'm not sure my drawing is correct. What's saying that the hole pattern centre should be on the centrelines?
What I'm...
Do mean as the attached?
Hobbs101
Mechanical Design Engineerhttp://files.engineering.com/getfile.aspx?folder=fee7b1e5-1289-4b72-a105-79bfed4897fb&file=snip_20160909172316.jpg
Hi. I have a plain square plate of unknown exact size and I want to ensure that 4 holes on a 100x100 square pattern are positioned centrally and oriented correctly. How is this dimensioned/toleranced?
I've seen many drawings where plate centrelines will be marked and =100= dimensions are put...
I'm modifying an existing framework to be lifted by a forklift. The framework weighs 2000kg and is 4m x 4m footprint by 2m height, so it's quite a wide load. Centre of mass is central and is 0.7m height.
We'll be using a large forklift (versalift) with ample capacity and fork length to lift...
Thanks all for your help.
I'm using brass. The ally threads won't be anodised.
I understand with hard anodise the anodise build up is generally half of the anodise thickness.
Hobbs101
Mechanical Design Engineer
The reason I need to do this is because I'm designing a lead mask for an x-ray machine. The mask sits behind the cone object. Ideally the mask would be a perfect cutout, blocking all the rays (emitted from a point source) outside the perimeter of the object.
I know there will be other...
Hi. I need to project the 'shadow' of an object from a point source of light onto a flat surface. This object is a cone, but could be more complex.
Any thoughts on how this might be achieved?
Hobbs101
Mechanical Design Engineer
Hi. I've got an M40x1 threaded hole in a 12mm plate of aluminium alloy (6082-T6). An threaded adjuster bar sits in the hole. What's the best material to make the bar out of to prevent galling? I'm thinking brass, bronze or aluminium bronze. I am also able to use lubricant e.g. grease.
Hobbs101...
Hi. I'm intending to get a welded aluminium assembly bead blasted to remove blemishes and give a satin finish.
I understand glass beads are best for aluminium. I'm looking for a 'fine smooth finish'. Can anyone recommend a typical bead size to achieve this? Or, I can specify a surface roughness...
When I say 'to my mind it's clear' I mean I think it's clear to everyone! But, yes, I accept your points. Clarity can save many subsequent issues. In fact, I do have one instance where my adopted terminology isn't clear, so I have indeed put in a section :-).
Hobbs101
Mechanical Design Engineer
Kenat, I agree that generally a section would be the clearest. In my current case sections are not the most practical. I have a complicated fabrication with many holes. To my mind me using 'M6 THRU PLATE AND ONE WALL' and 'M6 THRU PLATE AND TWO WALLS' is clear.
Hobbs101
Mechanical Design Engineer
Thanks. One day I'll learn to search the forums before posting!!
I'm going to adopt the 'one wall' terminology. Seems clear to me.
Hobbs101
Mechanical Design Engineer
Hi. If I have a plate and with a hole through the plate, I put on the drawing 'M6 THRU'. That's clear.
But, if I have a box section and I want the hole to just go through the wall of the box section, what is the standard notation? I've previously stated 'M6 THRU SECTION WALL', but that sounds a...
Hi. I've not been using iparts for long and am realising that they might be more trouble than they are worth!
So, I've got a family of shafts, 4 off, identical other than lengths. I've converted the part to an ipart and set the lengths accordingly. I've put the iparts into my assembly. All is...
Thanks desertfox, but I don't see any reference to combined compression and torsion in that document. Have I missed it?
Hobbs101
Mechanical Design Engineer
