ToolBox Drill Depth Default?
ToolBox Drill Depth Default?
Does anyone know where the formula or data is kept for the default drill depth on blind tapped holes in the toolbox? Tap Depth is simply 2X diameter but I have no idea where the drill depth comes from.
Re: ToolBox Drill Depth Default?
From the Knowledge Base:
===================================
Solution Id S-060656
Product SolidWorks 2011
Created 10/9/2012
Technically Reviewed Date 3/12/2021
Area Part
Sub-Area Hole
Question How are straight tap blind hole depth values calculated?
Answer: The formula is as follows:
Blind Hole Depth = Thread Depth + 'n' * Thread Advance
Where,
Thread depth = 2 * Diameter
n = is not fixed value and has different values based on parameters like the standards and the type of standards. For 'Bottoming tapped hole', n = 3. For 'Tapped hole', n = 5
For example, for ANSI Metric Tapped Hole M10x1.25
Thread Depth = 2*10mm = 20mm
'n' = 5
Thread Advance = 1.25mm
Blind Hole Depth = 20mm + 5 * 1.25mm = 26.25mm
For ANSI Inch Tapped Hole 1/4-20
Thread Depth = 2*0.25mm = 0.5mm
'n' = 5
Thread Advance = 20 TPI which means the pitch is 1/20 inch = 0.05in.
Blind Hole Depth = 0.5in + 5 * (0.05in) = 0.75 in
=============================================
===================================
Solution Id S-060656
Product SolidWorks 2011
Created 10/9/2012
Technically Reviewed Date 3/12/2021
Area Part
Sub-Area Hole
Question How are straight tap blind hole depth values calculated?
Answer: The formula is as follows:
Blind Hole Depth = Thread Depth + 'n' * Thread Advance
Where,
Thread depth = 2 * Diameter
n = is not fixed value and has different values based on parameters like the standards and the type of standards. For 'Bottoming tapped hole', n = 3. For 'Tapped hole', n = 5
For example, for ANSI Metric Tapped Hole M10x1.25
Thread Depth = 2*10mm = 20mm
'n' = 5
Thread Advance = 1.25mm
Blind Hole Depth = 20mm + 5 * 1.25mm = 26.25mm
For ANSI Inch Tapped Hole 1/4-20
Thread Depth = 2*0.25mm = 0.5mm
'n' = 5
Thread Advance = 20 TPI which means the pitch is 1/20 inch = 0.05in.
Blind Hole Depth = 0.5in + 5 * (0.05in) = 0.75 in
=============================================
Re: ToolBox Drill Depth Default?
So I'm assuming by that that this is a hard coded number. If that is the case that's fine and it actually makes my job easier. I'm working on identifying features in CAMWorks so for the depth I can just use the above formula.JSculley wrote: ↑Tue May 18, 2021 8:31 am From the Knowledge Base:
===================================
Solution Id S-060656
Product SolidWorks 2011
Created 10/9/2012
Technically Reviewed Date 3/12/2021
Area Part
Sub-Area Hole
Question How are straight tap blind hole depth values calculated?
Answer: The formula is as follows:
Blind Hole Depth = Thread Depth + 'n' * Thread Advance
Where,
Thread depth = 2 * Diameter
n = is not fixed value and has different values based on parameters like the standards and the type of standards. For 'Bottoming tapped hole', n = 3. For 'Tapped hole', n = 5
For example, for ANSI Metric Tapped Hole M10x1.25
Thread Depth = 2*10mm = 20mm
'n' = 5
Thread Advance = 1.25mm
Blind Hole Depth = 20mm + 5 * 1.25mm = 26.25mm
For ANSI Inch Tapped Hole 1/4-20
Thread Depth = 2*0.25mm = 0.5mm
'n' = 5
Thread Advance = 20 TPI which means the pitch is 1/20 inch = 0.05in.
Blind Hole Depth = 0.5in + 5 * (0.05in) = 0.75 in
=============================================