rebuilding a conical gear

[Zuffi]

very kind, new forum, I immediately denounce my absolute incompetence and my being looking for help.
I am a fan of industrial watchmaking and in particular of direct reading palette watches if you are curious to look for them as solar auditoriums. Many of these objects were produced in a period between the late 50s and the 80s (at this time they are re-editing them but this is another story). because generally work objects were often started at the slaughterhouse as soon as technologically passed. I try to save someone. of course spare parts not even the shadow. one of the most delicate and fragile parts, fragility given by the aging of plastic, is represented by the pinions that allowed the movement of the palette. and I come to the therefore. I detected the gear measurements, through an online gear design software I managed to get to a cad 2d file. I would like to try printing them with a 3d printer, but I would need a 3d drawing of the gear. Is there a pious soul willing to help me? I know that I ask a lot, I offer in exchange pedagogical advice (which is my job) the gear has 20 straight teeth I attach you file[ pensavo di riuscire ad allegarlo ma il forum mi dice che ha un estensione non consentita e un. dxf]. I hope soon!

 

[exxon]

1) buy the file and attach it as .zip or .rar
2) a 3d printed pinion will have short life. very short.. .

 

[Zuffi]

thank you so much I attach the file. the pinion actually makes a fraction of round every minute and should not have excessive efforts. Surely it will be to see what the best materials are, or even better it would be to be able to access a micro frieze and at that point try to work from the full maybe the brass. Thanks again.

 

[exxon]

I don't think it's possible to get a working gear of that size with a 3d print. not in fdm, perhaps in sls, but with teeth below the millimeter I do not see what resistance it might have.

I also see it difficult. If I had to do so, I would start from a brass crude, turn the basic geometry and then I would echo the teeth for broaching with a design tool and with the help of a divider.

It's a job you can't improvise. It takes the equipment and a lot of experience.

 

[Zuffi]

Original gear was made of plastic. If I could have the design I would try to tell me that you can print different materials for resistance. .

 

[welcome to the machine]

I couldn't open your file, but if exxon talks about teeth from less than a millimeter, even in sls you would have no less than 2/10 tolerance on size, rather "random" , so the gears would be really approximate.