I am trying to create a flathead Phillips screw as a SolidWorks part. I was wondering what the best way was to create the Phillips head socket at the top of the screw. Below is an image of what I am talking about. Thanks!
Robertson is a way better screw design....
I am looking for the dimensions on how to make the actual Phillips inset part of the head of the screw in SolidWorks.
What he said
Here are the spec'd dimensions.
Used specs for a #8
How do you figure out the draft degree for the Phillips recess?
If you can reference MIL-STD-9006 " Recesses - Cross, Low Torque Drive, Dimensions and Gage Dimensions for" for the dimensions and work backwards from there
dont reinvent wheel.
download it from websites like mcmaster carr http://www.mcmaster.com/#machine-screws/=13vqvci
I am making a custom screw. Its head height is slightly taller than that of the models given on that website. When I try to edit the model from the website, it throws of the draft of the extruded cut for the Phillips recess.
from the second table: atn(G/((M-N)/2))
A lot of people have suggested to download screws from McMaster. McMaster screws are garbage. They have far too much detail, including threads, and have no design table or other features that would make them useful. Much better to make you own.
Simplify too much detail. Suppress the Swept Cut. Make that a simplified configuration if you choose to keep both.
I'd make my own part if I was also fabricating my own screw, which is to say I would not. Original poster clearly is. Even so, I'd take their part and rollback as needed to edit and modify to suit. It shows a simple design tree at very least to emulate or improve upon.
Another option is to download the screw from the site of your choice but bring it in as a dumb solid. Then modifications can be made to it without the issue of something further up the tree changing something else.
I've taken their models and inserted my own design table, complete with all their information - that works really well and yeah you could strip out all the threads etc... Don't know if you remember or not we had a McMaster-Carr thread going years ago and the original poster had to delete the entire thread, McMaster-Carr lawyers on the scene....lol - so for a while their was a lot of Anti McMasters
Nice one Arthur!
I am trying to build a size 6 Flat Head Phillips. I used the chart you posted and calculated the draft angle based off of what you posted. However that gave me a draft angle of .4, which seems a little small. I have attached an image of what I have drawn so far for the Phillips head recess. I am using metric units on my model (.737mm =.029" & 2.045mm = .0805"
The draft angle I got was 66.97° => tan^-1 (.106/(.174-.029))
If you turn the controlling parameters into equations you can easily use the imperial units from the chart into the metric part
ie: d1@sketch1 = .106 in
I would add the fillet to the inside of the recess after the cut.
So, can a basic McMaster-Carr screw be easily modified or not?
Example, can I just take one, cut it's length down, add a small chamfer to the end and finish rather than create a design table to do the same thing?
Yeah - you can change it however you want it - if you have a chance go to 3dcontentcentral.com and in the search bar type in my name and look for a Socket Head Cap Screw - download with configurations and see how I did them, not the best modeling but works......
Don't you have to divide (.106/(.174-.029)) by 2? When I did that, I got a draft angle of around 20 degrees. However, my drawing wont allow for a draft angle larger than around 8
..next to screw threads,,... the black hole of time/money in the engineering/design world moves ever closer to the event horizon...
and you are NOT making a drawing - you are making a model, which you could make a drawing from later, if desired.
you will not be able to include the "draft" in the extrude cut - you will need different angles on different faces.
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