Camshaft machining by milling

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Camshaft machining by milling

This topic has 14 replies, 5 voices, and was last updated 31 May 2024 at 14:51 by Michael Gilligan.

Viewing 15 posts - 1 through 15 (of 15 total)

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29 May 2024 at 18:30 #733234
Simon Musson 1
Participant
@simonmusson1
The Cam Calc lift calculator on the site uses a Java Script Applet which my IPad doesn’t recognise and I understand now that this is problem with all modern sea h engines even if (as on mine) Java Script is enabled

Is there a version of Cam Calc or similar which I can use?
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29 May 2024 at 18:43 #733238
JasonB
Moderator
@jasonb
Try this one that uses Excel, seems mine and Rods (who wrote it) Drop box links have gone dead.
29 May 2024 at 19:35 #733245
Simon Musson 1
Participant
@simonmusson1
Thanks looks spot on but how do I actually input the data can view the file but not download it -am very ignorant iPad user!
29 May 2024 at 19:45 #733247
JasonB
Moderator
@jasonb
Sorry I’m Microsoft man.
29 May 2024 at 21:20 #733256
John Haine
Participant
@johnhaine32865
Do you have a Google account? I just downloaded the file to my Android phone and it opens in Sheets which is the Google online spreadsheet program. There’s an Apple program called Numbers which may be available as an iPad app.
30 May 2024 at 10:29 #733311
Michael Gilligan
Participant
@michaelgilligan61133
On 29 May 2024 at 21:20 John Haine Said:

[…] There’s an Apple program called Numbers which may be available as an iPad app.

just to confirm … Numbers is ‘standard issue’ on iPads

MichaelG.

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Ref. __ https://apps.apple.com/gb/app/numbers/id361304891

Edit: __ I will have a look later, but first indications are that the data-entry page in the file that Jason linked is locked when opened in Numbers 🙁
30 May 2024 at 11:50 #733335
Simon Musson 1
Participant
@simonmusson1
Got it ! Opens ok in Numbers and can input the data
Thanks so much for your help
30 May 2024 at 18:13 #733386
Roderick Jenkins
Participant
@roderickjenkins93242
Hi guys, sorry too be late to the party, I’m on holiday at the moment. I can’t access my Dropbox on my tablet, Google seems to have provided me with a brand new Dropbox account with nothing in it!

Simon, When you open the CamCalc file in Numbers does the cam drawing bit work? Sheets does all the calcs OK but doesn’t do the drawing bit. Microsoft used to offer a free mobile version of Excel that would do everything but now it seems to insist you buy Office 365 to edit ( change the input data).

Any problems using CamCalc please get in touch.

Rod
30 May 2024 at 18:33 #733392
JasonB
Moderator
@jasonb
I can still get it to work without paying, just save a copy to onedrive which can then be edited and keep saying No to signing up.

Dropbox does not show much of my stuff now though it does seem to still serve up some of the files even though I can’t see them listed on my account.
30 May 2024 at 19:17 #733398
John Haine
Participant
@johnhaine32865
Try OpenOffice Calc as a free alternative to Excel.
30 May 2024 at 19:54 #733405
Michael Gilligan
Participant
@michaelgilligan61133
For Rod …

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Aspect ratio of the image looks a little odd [?]

MichaelG.
31 May 2024 at 08:17 #733462
Roderick Jenkins
Participant
@roderickjenkins93242
Michael, thanks for that. Getting Excel to plot a graph with equal X and Y scaling needed a technique involving a ghost graph hidden underneath the cam display graph. I guess Apple’s display handling differs from Microsoft and Android.

Rod
31 May 2024 at 10:08 #733480
John Haine
Participant
@johnhaine32865
As a matter of interest, why does the Excel version seem to require a cubic spline add-in?
31 May 2024 at 14:13 #733520
Simon Musson 1
Participant
@simonmusson1
For Rod

caculations work ok but doesn’t do the drawing bit-but not bothered about that

Simon
31 May 2024 at 14:51 #733528
Michael Gilligan
Participant
@michaelgilligan61133
I had only viewed the file before … but properly importing it into Numbers pops-up this warning message:

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MichaelG.

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Edit: __ the image of the cam looks much better proportioned, but it doesn’t re-draw properly if the input values are changed.

[ unless of course it was utterly stupid of me to try changing tha angle from 140° to 160°]
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