Solidworks HOle wizard question

[mahumada]

HI,

This is my first of probably many posts, given that i just started using solidowrks at my internship, yes i am an intern.

One question i wanted to ask it, what is the difference between a straight tap and a hole in solidworks hole wizard?
I am trying to make a simple M3 screw hole and one option, straight tap, gives a hole that is exactly 3mm in diameter, while the hole option gives me a 3.4mm diameter.

Thanks

 

[ctopher]

The difference is a straight hole and a threaded (tap) hole.
When you create the tap it shows the drill dia and thd size (and depths of each).
Check out the thd sizes

http://www.engineersedge.com/hardware/metric-external-thread-sizes1.htm

Chris
SolidWorks 10 SP4.0
ctopher's home
SolidWorks Legion

 

[mahumada]

ok thanks!

so my best bet would be to use the "hole" option under "hole type" and "Tap drills" under the "type" drop down list, correct?

by doing this, it gives me a hole that is less than 3mm in diameter, about 2.5mm, is this correct?

Sorry if this is an easy question, but im really new at this.

 

[Eltron]

You need to select Straight Tap and select ANSI Metric. Check the Help.

Dan

http://www.eltronresearch.com

Dan's Blog

 

[mahumada]

ok.

so just to get this straight, a straigh tap hole, with cosmetic thread, cuts a hole with the size of the minor diameter, it calls out the thread size, then the final hole will have the diameter of the major diameter. Am i correct, or am i just completely confused?

thanks

 

[CorBlimeyLimey]

Read the following from the Help file. The Option section toward the end shows cross-sections of the different tapped hole options available.

http://help.solidworks.com/2010/Eng...C.htm?id=f249414324414fde8fcf1c76175bdd8d#Pg0