Angularity does not Locate
The Top Plate, in the caster wheel assembly (Figure 1) locates & Orients the two axle supports Figure 1 Partial Front View below (Figure 2),
COAXIALITY
There is some ambiguity regarding meaning of the geometric control COAXIALITY. This tip is intended to resolve any disagreements on the subject, and I thank
Datums & Orientation Control
(ASME Y14.5-2009, ISO 1101:2012) Orientation deviation is controlled and measured against a Datum Reference Frame, or in short – DRF. The datums and the reading
Flatness Vs. Profile Controls
[fusion_text] (ASME Y14.5-2009) Among the GD&T symbols there are overlapping areas, in some cases there is no difference in functionality when applying one control method
General Tolerance
This tip complies with ASME Y14.5-2009 and ISO1101:2012 A drawing is a binding contractual document that has financial implications, therefore it has to be clear
Hole Pattern as a Datum Feature
This tip complies with ASME Y14.5-2009, ISO 2692-2006 In many cases parts in an assembly are designed to mate simultaneously with more then one counterpart
Measurement Report & Basic Dimensions
Why BASIC Dimensions should not be in a Dim Report This tip complies with ASME Y14.5-2009 and ISO1101:2012 The most significant difference between assigning dimensions
Pattern Location
(ASME Y14.5-2009, ISO 1101:2012)Our monthly tip following Benny’s suggestion – how do datums affect the control of position with regards to groups of holes? Figure
Position & Symetry
(ASME Y14.5-2009, ISO 1101:2012) Our monthly tip, following Idan’s question on how to indicate symmetry. In Figure 1, the two threads on the front are
Straightness per unit length
Straightness and flatness per unit length are required when it is necessary to avoid sharp changes over a feature’s length or surface unit. Figure 1
