I have a customer drawing. The part is basically a rectangular block with all edges shown at implied 90 degree angles. All tolerances are defined in the title block and ASME Y14.5-1994 is referenced in the title block. The width, thickness, and length of the part are dimensioned leaving it to...
I admit I am a bit stumped. Probably not enough coffee yet!
I am working on a part that has a serrated end (DIN serration). The other end of the shaft has two flats milled on opposite sides of the shaft (flats are parallel).
The issue at hand is that the serration needs to be oriented WRT the...
I am working on the design of a machined casting. Tertiary datum used to position some machined features is a cast hole. I think it is appropriate to use tertiary at MMC but I do not want to add the cast hole size and tolerance to the machining drawing unless I can't avoid this.
Currently we...
Attempting to replace a European mtrl specification with something commercially available in the USA. ASTM A514 has been suggested due to the fact that the required mechanical properties of ASTM A514 are within spec.
However, the original design required some sections to be induction hardened...
I checked a drawing the other day that had 5-6 machined diameters all on the same centerline. There is no specification concerning coaxiality of the diameters on the drawing. Without some sort of coaxiality control (either position or runout) on these diameters I feel that the drawing is not...
I have been instructed to send a copy of an industry standard to a vendor. The problem is that there is an obvious statement on the document that it is protected by international copyright law and is not to be distributed, copied, etc.
I really don't want to do this and I have been dragging my...
Not sure if I need to post a picture so I will try to describe this as best as I can.
I have a hole pattern in a stamping located with a positional callout (MMC) to three datums:
A = plane, surface of part
B = central pilot diameter (MMC)
C = hole, not contained in hole pattern (MMC)
When the...
Question in regards to revisions of drawings. I won't get into the details concerning why these are issues. I can't find anything in ASME Y14.35 or Y14.100 that covers these situations.
issue 1:
Sometimes we have drawings on which a single feature has undergone multiple revisions. It is our...
We spec springs on drawings leaving the initial tension (if it is a tension spring) and the free length as ref only dimensions. We give two lengths and two loads (with tolerances) as well as other information to specify the spring.
We are not a spring manufacturer so we do not have the...
We typically specify zinc plating according to ASTM B633 including the thickness of the plating. We do not specify a tolerance for the thickness and I haven't been able to find anything that indicates what "standard" tolerances are for zinc electroplating.
Does anybody have any standards or...
Not sure where to ask this so here goes.
We recently were told that we had to schedule a certain amount of vacation time on certain dates for a company wide summer shut down or risk attendance problems.
Problem is I already scheduled all of my vacation time otherwise and have travel plans...
industry background:
I work for a company that designs and manufactures components for the off-road vehicle industry.
The problem:
Currently we do not have a formal release process for a finished component or assembly - this is a huge problem I am attempting to solve. There are also no...
We typically have 2 different product categories where I work. Product we sell to many customers ("standard" products) and highly customized products either specially designed by us or our customers.
I have been making the argument that when the customer designs a product we should embed their...
I must be losing my mind, this should be straight forward.
Here is an outline of the situation...
Customer has supplied us with the following:
1) their part drawing indicates 4 tapped holes with positional tolerance (at MMC) of 0.3 mm (T2)
2) fastener MMC (i.e. max) diameter = 9.525 mm (F)
3)...
quick question for you GD&T gurus out there.
I am working on a part that has two dowel pin holes used for alignment of a part.
I think it is possible to define the two holes as a pattern and then define the pattern as a datum to define secondary and tertiary datums to be used for location of...
Since our parent company is German we have to deal with the ISO system of GD&T regularly. They use tend to use concentricity to control coaxiality of features. Since they have design control of these drawings and indicate that ISO 1101 must be used to interpret them we are struggling to adapt...
Not sure if this is the right place to ask but here goes anyway.
I work for a company that is ISO 9001:2000 certified so document control is a big deal. All of our standards/work instruction/etc are controlled according to our ISO system.
Our title block is not currently a controlled document...
I am not sure if this is the right place to ask this question but here goes...
We produce a part for customer X. They supply us a component used in the final assembly for free, since they are buying it back after all.
We have found that it would be to our advantage to use the part in another...
I think I know the answer to this but I am not 100% sure. Here is a description of the drawing I am checking;
Imagine a flat circular plate of steel. datum A is one surface of the part. The secondary and tertiary datums are defined by a central hole (datum B) and another hole on the part (datum...
I have been arguing with the QA folks about what the ASME Y14.5M-1994 standard calls concentricity and what they are checking.
As far as I am concerned if concenctricity is called out between two cylindrical features, the median points of all correspondingly located elements have to fall within...
