Does anybody know how the recommended holes sizes for screws were established in the ASME B18.3-1986 & B18.2.8 tables? For example, the following recommendations are given for a 1/4-20 screw.
ASME B18.3 - Close Fit .266" (17/64 drill)
ASME B18.3 - Normal Fit .281" (9/32 drill)
ASME B18.2.8...
I have two 4 hole circular bolt patterns, the holes are on same angles 90 deg apart. I set first pattern relative to part A(face), B(bore) and C. I want the second bolt pattern position so that the angle is aligned to that of the first pattern. I suppose I could pick one of the holes, make datum...
I have a 4 hole bolt pattern, 90 deg apart. I know how to set position these holes realative to datums A, B and C. The problem I am not sure about is how to set position on bolt releiefs (in side wall) that need to be concentric to these holes on opposite side of part. Do i need to create datum...
Hello,
I am little confused by a note in the UL674 "Electric Motors and Generators for use in Division 1 Hazardous Locations" standard. It is under the section "Connections for conduit". The specific section is detailing the requirements for a threaded conduit entry into an electric motor...
Hello,
I was wondering if anyone has come across a tool that would help you distinguish mechanical fits(ref. http://www.me.rochester.edu/courses/ME104Q.dque/PDF/Fits.pdf). I am thinking is it would be as simple as a 1" diameter x 2" tall dowel pin with a 2" thick rectangular plate that had...
Hello,
What is the correct terminology for the distance from the outer diameter of a shaft to the flat? Dimension "R" on the attached sheet. I believe it is flat height, but I am not sure.
Thanks,
-ren
Hello,
I have a question about keyway tolerances as specified by ANSI B17.1-1967 (R1998). For a 1/8" square key, for a class 1 fit, the width and height need to be .125 +.000/-.002. The key seat dimensions need to be .125+.002/-.000. That would give you a line fit in the worst case, but this...
Hello,
I have used this setup ever since I started working back in Autocad 2003. Basically, you setup your right mouse button to bring up the object snap menu. It is awesome and I am suprised these cad packages do not set this up as the default. So, now I am working with Draftsight, but I am...
Hello,
I have been investigating the differences between a hex bolt and hex cap screw. The hex cap screw has a round bearing surface underneath the head. The height of this bearing surface is .015" to .025" from the bottom of the head. The circular runout this surface needs to be within a...
Hello,
I am using 2007. Is there a way to grab a color from an image in Solidworks? I have a picture(.jpg) of a leadwire. I want to apply the color from the leadwire picture to the model.
Thanks,
-ren
Hello,
I copy and pasted an Autocad dwg into a SW sketch. Conversion worked pretty good except for degree symbols, they are showing %%D in the SW sketch(see attached).
Typically not a problem, but I have a lot of these degree symbols on the drawing. The only way I can fix is to update each...
Hello,
Trying to add the degree symbol into Sketch Text on a sketch in a model(see attached). The only way I have found to do this is using charmap.exe. Is there an easier way? I tried the alt codes, but can't get them to work.
Thanks,
-ren
Hello,
Over the past few years my company has been transitioning from Autocad 2D drawings to Solidworks 3D models. During that time we have been reluctanct to model leads/cables in 3D, because it doesn't appear to be worth it. It takes so much time to model the leads/cables, that the time would...
Hello,
I am working with SW 2007 on XP. I have an assembly with a bunch of leads. Each lead is a separate part. I want to move all the leads around like similar to a block in a 2D drawing. Is there mate that can do this? Can I turn it into a block?
I do not want to turn the leads into a...
Hello,
I am working on the design of a cantilever snap fit(see attached images). This assembly will be permanent(no dissassembly) and I want the parts held tightly together so that there will be no vibration. I have read some online documentation from BASF and Bayer, but was not able to find...
Hello,
I know display states can be used to show/hide parts in an assembly. Can they also be used to show/hide features in an assembly?
Thanks,
-renasis
Hello,
I believe it is more efficient(reduces file size; 1 sketch instead of 2) to use a cut feature vs. the hole wizard in Solidworks for simple holes. Are there any advantages to use the hole wizard for these?
Thanks,
-renasis
Hello,
I have a part that is machined on a surface. That surface is shown in two views in the drawing, front and side. Is is necessary that I have a machining mark on both surfaces or is one sufficient? Is there a standard that specifies whether the machining mark needs to be in all views...
Hello,
The arrow tip for a part callout on an assembly drawing should be coincident with the outline of the part, correct? This is recommended over the arrow tip pointing to the surface of a part, correct? Reference attached example of both methods. Is this specified in the ASNI Y14.5M...
