[ Feature Request ] #8791: Adding ISO keyway tool (like Hole feature)

[Piero69]

an useful engineering feature to add in PD is the keyway tool (working like the hole one).

Idea could be:

1) selecting the circular edge (to measure it and offer consequently the correct standard dimensions of keyway BxH)
2) selection the reference face for the position (distance from border)
3) digiting the user's lenght according to standard one

waht do you think?

[NewJoker]

And if it could also include design calculations… But that’s likely wishing for too much.

[chrisb]

Can you post a mockup of what you would like to see automated?

[Piero69]

1) selecting circular edge for shaft

selecting edge.jpg (171.59 KiB) Viewed 1808 times

2) selecting reference face for keyway

selecting reference face.jpg (171.94 KiB) Viewed 1808 times

4) creating a datum plane

creating plane.jpg (216 KiB) Viewed 1808 times

5) generating constrained sketch

Keyway Sketch.jpg (248.73 KiB) Viewed 1808 times

6) through all pocket

Pocket.jpg (190.51 KiB) Viewed 1808 times

Can you post a mockup of what you would like to see automated?

i imagine a keyway tool that, once run, it:

1) asks you the circolar border (diameter is calculated by 3d model so also the key size by ISO table)
2) asks you a reference face for the keyway
3) asks you the key lenght

now the tool automatically

4) creates a datum plane placed at diameter/2 - keyway depth according to given user's reference
5) generates a sketch with the constrained slot according to input
6) makes a through all pocket

that's some images to make it clear

@NewJoker
@chrisb

[Piero69]

@chrisb did you see? what do you think?

[chrisb]

Sorry, I had missed this one .

This could be a sensible extension, especially if it respects/includes some ISO defaults. As I personally didn't need it in the past, I would like to see more voices of users needing it. Then it could be decided if it should be included as a native tool, or as an addon.

1) asks you the circolar border (diameter is calculated by 3d model so also the key size by ISO table)
2) asks you a reference face for the keyway
3) asks you the key lenght

There are probably two more parameters needed:
- "Position from face" as it is called in your sketch. This should be measured from the circular border
- a MapPath parameter between 0 and 1, describing where around the cylindrical face you would like to place it. Such MapPath occurs also if you attach something normal to an edge.

4) creates a datum plane placed at diameter/2 - keyway depth according to given user's reference

It doesn't need the DatumPlane, the sketch should be attached directly to the circular border.

[chrisb]

I don't know about the ISO, but the german DIN norm knows different shapes here:
- Form A (DIN 6885), this is what you describe, see e.g. https://de.wikipedia.org/wiki/Passfeder
- DIN 6887, which requires a rectangular hole. It has a nose at one end as shown here at the left bottom: https://de.wikipedia.org/wiki/Keil_(Tec ... Keile1.png
- DIN 6888, which is probably a Woodruff key

[Piero69]

@chrisb

thanks so much for you reply and remarks, can i make a poll for see people opinion about that?

[chrisb]

We had recently some discussions about polls. It is a difficult matter if they should have a binding character, but it can at least give an indication. However, I would guess that people interested in such a feature would have voiced their opinion here.

[Piero69]

I don't know about the ISO, but the german DIN norm knows different shapes here:
- Form A (DIN 6885), this is what you describe, see e.g. https://de.wikipedia.org/wiki/Passfeder
- DIN 6887, which requires a rectangular hole. It has a nose at one end as shown here at the left bottom: https://de.wikipedia.org/wiki/Keil_(Tec ... Keile1.png
- DIN 6888, which is probably a Woodruff key

ISO 773-X is DIN 6885-X (X is the suffix for the form A B and AB)
ISO 3912 is DIN 6888
ISO 774 is DIN 6887

a feature according to these standards is ideal for the mechanical design