New Version 4.93.03

[John T]

Hi Art,
All three font sizes work clear and sharp on my machine, but then I didn't have a big problem before.  It is much clearer now.

This is version 4.93.03 but my about in GT says 1.07 and GM 4.920  Not a problem for me but thought you might like to know.

To access at the options in the drop down menu I have to right click is that correct?  On Right Click the changes I make take effect with no problem.

Naming of items works as advertised.

Thanks as aways Art

[John S]

Art,
Font is a lot lot better.
However  :) you have to diameter listed now as you said you would but pitch circle is still in radii.

Also in GM if you shift a gear you get the ex-pitch diameter listed, not so in GT you get shift coefficient listed which is showing in the box anyway.

I have been playing with 2 gears today a 125T and 127 and because of design limitations I have to make these identical even though they are 2 teeth different.
Far easier to do in GM than GT. and the printed results in diameters are more meaningful.

BTW Small son liked his license file !! No one will steal that !!

[ArtF]

Hi :

  Thanks for the font reports, sounds as  if their getting better now.

John:

  Ill swap the pitch to diam, and see about the ex-pitch on shifted coef.. I hadnt spent much time in there,
it was mostly just getting the control code done, Ill slowly be changing the actual displayed data to whatever
people find usefull, trivial now that the code is complete.

Thx
Art

[ArtF]

John:

  In future will be as shown before. ( Unless people want other data added. )
In this version, since you can see EX-Pitch and such, the difference between GM's
coeff shift and GT's becomes apparent as the numbers differ quite a bit. GT's are
the correct figures. :)

  Art

[John S]

Magic.
Does GT show the max endmill required like GM did ?

[ArtF]

John:

  Good point.. Not as yet, Ill add it to my list. You can, however, see the tool path created, which, if the tool
is too large can be seen crossing over itself. Ill set about the required calculations as to max diam and min length..

Art

[John S]

helical gears,
leave the left handed box unclicked and so it's right handed but it list a LH helical.
If you select 2 RH or2 LH it shows them offset in the project tree but if you go back and alter then the project window doesn't get updated.

Then delete the last gear leaving the first gear in the project screen and you can't tab back to the circular gear module to make any changes.

[ArtF]

Hi John:

  Thx for those. The LH/RH was backwards on its selection. Also, when a gear is deleted, all creation windows
are closed so "Round gear" would have had to be selected again, that window to tab to should have been closed, Ill
fix that as well. The closing of tool windows when a gear is deleted is just to ensure that no crashes occur from
windows trying to access an object no longer available, Ill see if I can tighten that up as well.

  Its still a bit early going for the GUI, though its getting much more stable , it still needs some cleaning up
functionallity wise now that stability has been achieved, ( no crash reports in several versions now..).

Thx
Art

[ArtF]

Hi John:

(as of next release)

  OK, fixed up those so that LH/RH is correct ( in my world of logic its CCW and CW so I sometimes
get them backwards. :) )

  Also, I fixed it up so only the tool that NEEDs to be closed to stop inadvertant crashing close, so now
if you delete a gear you can still tab into the gear window to create another without reselecting that tool.
( I do find this works better..thx for that bug..)

  I also added more text in the involute text to show the pressure angle, the extended pressure angle if shifting
is also displayed. This sections worries me as the differences between GM and GT are quite large. If you
for example do a profile shift of .5 on the wheel and -.5 on the pinion, the result is no change on the
pitch diameter on either gear. I had to triple check this as it sounds wrong.. but the formulas are
pretty insistant on that point, they do not consider profile shift to be a 1 gear calculation, both gears are
included and cancel each other out, but do increase the outside radius. ( which to me implies a new pitch radius..
but apparently not ...or we're into bad formula's published again.. ).  We'll see I guess...

Art

[John S]

OK designed my gear in GT
Bit special [ more later ] got more corrections than a Tippex factory.

Sent it to 3D printing as an STL

Now how do I get back to that gear to make more alterations for a second gear.

All I have is the STL screen, or DXF or Print.
If I select tools and circular gears I get to start off new again with M5 as default mod.

Only way i can get it to do it and loose e the gear thats now written in stone in the project screen is to exit the program and start again.

The more later bit
Sorting the design out for a job.

Oh how things have progressed. Did the design work and drawing yesterday.

'Made' 4 gears today on the 3D printer to prove the concept on a simple jig. Two seperate gears and one double pinion made all in one.

The production gears will be separate gears pressed on a shaft but easier to print together.

OK doesn't look anything special but the ratio needed has to be accurate to 3 decimal places, no plus or minus.

100 year old gear book gave me the ratios



Gearotic gave me the options using two different pitches. Now here is where it gets fancy. None of the 4 gears are standard, the two finer teeth ones are corrected so they fit fixed centres that are written in stone.

Of the two courser gears one is standard for the pitch, one is corrected but both have the pitch corrected to fit the same centres.

Anyone know where I can get a 44.53 DP gear cutter ? wink

[ArtF]

John:

:-)

>>Only way i can get it to do it and loose e the gear thats now written in stone in the project screen is to exit the program and start again.

  You can press the "new project" icon ( top left of bar), OR select the gear by mouse on screen or project tree, and then press
delete on the properties tab. The first will get rid of all objects, the second just gets rid of one.

>>Now how do I get back to that gear to make more alteratio ns for a second gear.

  You use the Redesign button...( not yet implemented, should be out fairly soon though..)... :)

>>Anyone know where I can get a 44.53 DP gear cutter ?

I guess you could use the dxf of the involute profile to make a cutter
or we could start the discussion of how the heck I can do it for you from the dxf profile. GM's cutter maker didnt work
great , so I think we have to figure out the best GCode method of creating a cutter.. Ive made sure GT has the data
to create it, just a question now as to how best to do it..

(Gears look good though.. good 3d printer, eh?)

Art

[John S]

Printer is fine but a lot of the parts I have made with the blue filament haven't come out as good as the white that came with the machine even though they are both genuine filament.

Overall very pleased with it.

Found something very useful. RS Components worldwide have released a cut down version of Spaceclaim that they call Designspark

Google it and download it, it's free, then you can go on their website and download loads of things for all sorts of manufacturers, load it into Designspark, save as STL and print it.

I did a small 10 pin plastic connector I had broken the other day, printed the new holder and swapped the pins over into the new one.

Connectors from RS were in quantities of 10 

[ArtF]

Wow.. that IS a good way of making connectors and such isnt it.. Man..what a world we're entering..

Art