Recent content by Madhu454

Hi All, Need help with choosing the correct material modifier for press fit holes (H7), while using a positional tolerance. Need to position TWO HOLE PATTERN (Diagonally placed on a rectangular plate) with a position tolerance, Dowel pins to be fitted to these holes, these dowel pins(m6) will be...

Hi All, I need your help. I have two 3mm steel sheet. I want to connect both of them with the screw stud. Also I don't want the screw surface to protrude over the sheet on both sides. Is there any self tapping screw studs available? if So can anyone help me with the Standard of screws? Is there...

Hi All, Thanks a lot for the reply:)

Dear All, I had completed ASME GDTP technologist certification in 2011 on 1994 std. Now I am planning to prepare for ASME GDTP senior level exam. Could any one help me to understand. 1)How Technologist level exam is different compare to senior level exam? 2)Is the questions are more related...

Hi All, Could you please suggest any good books on Mechanisms and Robotics to start with. With suitable practical applications Thanks in advance.

Hi, Thanks for the reply. One such method I found recently was, I was editing the linked body in the part navigator, by edit with roll back option and then linking to the new body. By doing so I was missing the associativity on some of the section curves which was already made, then the other...

Hi All, Could any one of you tell me the best practices that needs to be followed while adjusting the NX models based on the existing files. Most of the times we have to use new part file instead of the existing one, and still maintain the associativity of all the child features. How best this...

Hi All, Thanks for the reply. It was helpful.

Hi, Is there any thumb rule or acceptable guidelines to convert Ra surface roughness values to Rz surface roughness values?

Hi, Appendix B of 2009 std explains the formula for Fixed and Floating fasteners. For some reason if I want tapped holes on both the plates. How to calculate the positional tolerance for such cases? Can anyone help please me on this.

Thank you John-Paul

Hi, I am referring to figure 4-29 of ASME Y14.5-2009 standard. Could anyone help me to understand the concept clearly. 1) The datum feature "B" is a semicircular surface (feature). Since there is no opposed surface to this, it is not a feature of size, But in fig (b) Datum B is identified with...

Hi, In continuation to the above discussion, now I got some more doubts. 1) Is adding the LMB for datum feature A, change the Min wall thickness? 2) Does it also means, when datum feature A produced at LMC, it should have perfect form?

HI pmarc, Thanks for the explanation. It is clear now, :)

Hi pmarc, Thanks for the reply. I was calculating the minimum thickness as below. The boundary for inner dia = 16.5 + 0.1 + 0.2 (pos tol) = 16.8 The boundary for outer dia = 20.3 (lmc) Minimum wall thickness = (20.3 _ 16.8 )/2 = 1.75 But, you have mentioned that the min wall thickness is 1.65mm...