The casting drawing controls cast surface profile to the cast datums D-E-F. The primary machine datum structure A-B-C is established with respect to the cast datum structure. Datum C is held to datum F. Machined features are then referenced to A-B-C. I stack from the cast to the machined...
Thanks Dave. Appreciate the help.
All five holes in both views are located by the same basic dimensions. Datum B in both views is an assembly pilot diameter. I provide a sketch to illustrate. My apologies. I'm trying to mask the part.
Datum F is the tertiary cast datum. A is the primary...
Burunduk,
I recognized this option. I appreciate the guidance/feedback. Please review these notes.
3DDave,
The customer interface definition matched the machine drawing early in the design process. The machine definition is our standard machined casting interface definition. My customer...
Have a look at the attached interface drawing.
Datum C in the machine definition will satisfy both location and orientation as defined in the customer interface drawing. Machine definition of Datum C (orientation and location) WRT datums A & B is defined by a position tolerance of .002...
Many Thanks for the input.
Chez311,
We have manufactured the part on three previous runs. Inspection found the groove width to sharp corners smaller than print allowable on the current manufacturing run resulting in an investigation into what we produced/shipped previously and why small on...
Hello,
I need to modify or clarify the dove tail groove geometry on one of the parts currently being processed in the shop.
The modified dove tail groove geometry, using the Parker O-Ring Handbook as a guide, is provided in the attached sketch. The Parker handbook does not define the bottom...
I'm looking through the UNEF thread specification standard and have a question.
I'll use .625-24 UNEF-3B for this discussion. The standard defines the minor diameter as .5800-.5869. The standard defines the pitch diameter as .6018-.5979. The standard defines the major diameter as .6250...
Hello,
I moved this post from the rubber engineering forum this am. I think the mechanical seal engineering forum is a more appropriate forum for this inquiry.
I need two specific o-rings that I cannot readily find. Are there any recommendations on where I can find and buy these o-rings? Both...
Hello,
I need two specific o-rings that I cannot readily find. Are there any recommendations on where I can find and buy these o-rings? Both are a metric size in the Viton GLT rubber formulation.
#1 size 1.5mmx6mm
#2 size 1.5mmx8mm
Thanks
Thank you.
Worn plugs over time. The failure to properly install and secure the plugs. I'm thinking I could replace the wing nut with a hex nut and establish an installed torque for pressure test. Air source lockout (I have this setup on a low air pressure test setup today). A lockout to...
Hello,
Thanks for the input LittleInch and btrueblood. I believe we have similar thoughts and ideas.
I'm hoping I can buy something off the shelf, however, we have other similar products we manufacture and pressure test (air and water) and I have designed and fabricated a variety of o-ring...
Hello,
LittleInch
I can't (shouldn't) provide pictures or a drawing. Access to the two .315 inch diameter holes is wide open. The length of both machined holes is approximately 2 inches. There is a large wall thickness surrounding both machined passages. I do have 'other' small/local...
I have a machined aluminum 6061 housing I need to pressure test for leaks and want recommendations/guidance to seal open external ports. Pressure test is governed by customer specifications. Pressure test is 75 psid with air in water for 10 minutes.
We machine cores/passages to make all...
