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Dear Friends, Please help me to find the Maximum and minimum gap. I have similar drawings from one of my supplier. The dimensioning scheme and the 10° angle is making trouble to do the stack up analysis. Please provide your views and help me solving this stack up. Thank...

Hello Everyone, Please suggest me how to dimension the multiple pattern holes on drawing. I am working on machining drawing (casting component) How should I mention M4 threaded holes on drawing in one callout. I don't want to put M4 dimension multiple times as my drawing is already having to...

Yes. I am designing air-intake system for a completely new vehicle. I want some help on design calculation for number of pleats, area of filter element/paper, restriction etc. Thank you for your replies. More help on design calculation will be appreciated.

Flow rate is 195 CFM. Fuel Injection - Diesel Engine 1.5 Liter. Passenger Car with 10000 KM of service cycle.

Hello Everyone, Please help me with the calculation required to find out the area of air filter element/paper.(Gasoline engine - air filter.) Any standard design document or guidelines for IC engine air filter design will be appreciated. Thank you. Vishal

What is the tolerance value of flatness and profile of surface? If flatness tolerance zone is larger then profile, then it could happen.

Please provide your views.

Please refer to attached image.http://files.engineering.com/getfile.aspx?folder=c802f28b-a94b-449e-86e0-a4815affea76&file=2017_01_13.JPG

Hi, Please refer to attached image. http://files.engineering.com/getfile.aspx?folder=aa6261eb-fcc6-4bbd-ab65-0429dff6da43&file=2017_01_12.JPG

mkcski: 1. Can we use runout on non circular profile like cam lobe? Can not apply on curve surface... Please provide your view on below point 2. Can we use parallelism on curve surface? Thank You.

1. Can we use runout on non circular profile like cam lobe? 2. Can we use parallelism on curve surface? Instead Profile Of A Line would serve the purpose. Please provide your suggestions.

Hello Everyone, While referring to some old camshaft drawings, I come across Runout and Parallelism Gtol. (on Cam Lobe Surface) Please help me to understand this. Vishal. http://files.engineering.com/getfile.aspx?folder=83bf7005-bae7-4923-ad81-bd9eb5faece9&file=Camlobe.JPG

Hello Dho, position tolerance is only controlling axis offset from datum but does not control orientation of the hole.

Hi Jdmmech, Can you explain the working of this assembly? Just wanted to know whether concentricity between disc and sleeve is more important or perpendicularity between sleeve and disc face.

Hi Idanbrk, I think you can use composite position tolerance with pattern relating tolerance zone of dia 0.02mm. Refer to attached image. Vishal.http://files.engineering.com/getfile.aspx?folder=4f7cbf40-ac45-4553-90d6-f257d075220a&file=Pattern_hole.JPG

In worst case, flatness of surface will be within 0.6 mmhttp://files.engineering.com/getfile.aspx?folder=0932efb4-d54c-4233-8177-6446f42803b3&file=Flatness.JPG

That's right 3DDave. Deviation of straightness in X direction is zero as well as in Y direction is also zero

Thank You so much Drawoh, Kenat and juergenwt for your response. I was planning to replace 100 to basic dimesnion, but now i will not do that. Diamond pin or Slotted spring pin will be a good option. Also slotted hole is good option but i dont know how to use it on drawing for dowel. should...

CheckerHater is correct. Straightness does not control Flatness. Refer to attached image.http://files.engineering.com/getfile.aspx?folder=6e49bde9-2e3e-4c3e-bacf-09ec5120e931&file=Straightness.JPG

Hello Everyone, I need some help to decide the position tolerance value for distance between 2 dowel pin holes. Details: Need to find out position tolerance value for 2 holes on mounting bracket of Dia 10H7 and 100 mm apart. 1. Fit required: Dia 10 H7/h6 Transition fit. 2. Two Dowel pins (OD...