Home Hobby Hobber Part VII
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- เผยแพร่เมื่อ 14 มี.ค. 2017
- In this video I cut a bevel gear using the Home Hobby Hobber. High quality bevel gears are cut on very precise, VERY expensive dedicated gear cutting machines but bevel gears intended for slow speeds, where uniform rotational speeds are not essential, can be cut using a milling machine and an indexing head or, as I demonstrate, a Home Hobby Hobber. Part VI of the Home Hobby Hobber can be found here: • Home Hobby Hobber Part VI
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That's actually a pretty awesome mod then, should be pretty rigid.
Funnily enough I'm working up to make my own Franken-knee-mill out at a small Chester milling head attachment for a lathe.
Started investigating hobbing as I'll need a worm drive to raise and lower the mini knee table and found your channel.
Subbed ;)
Love the setup, ingenious.
Nice to see another Dore Westbury in action too :)
Hi WrenagadeWorkshop,
Thank you for your interest and words of encouragement on this project. I must say that you have a keen eye for identifying truly obscure milling machines. I built and adapted the Mark I D/W head to make yet another obscure horizontal/vertical milling machine more versatile. The main machine is an Industro-Lite.
Cheers,
F.C.
Always like seeing the many different ways to cut gears. loved the video and Thank you for sharing. Dave
Hi Dave,
Glad you found it interesting.
Cheers,
F.C.
Mi
Thanks for your kind reply.
really like seeing it, nice job dude
Beautiful!
We have a bevel gear cutting machine. its a russian straight bevel gear generator, but we are not able to generate a profile, i do not know what are we missing, can you help ?
Hi Vishal,
I'm sorry but no, I don't think I can help you. Maybe you could post a TH-cam video of your machine and explain the problem(s) you're having. Someone might know something about it. That said, what is the name, model, approximate manufacturing date for your macnine? Is there any documentation (operators manual) for the machine? I would also suggest contacting the manufacturer of the machine. Hope that helps some.
Cheers,
F.C.
Hi again, so if we are waiting for an article in a magazine, could you please tell us which magazine it is going to be in
Hi Roger,
Thank you for your interest and, above all, patience. I have been unable to get a firm publication date from any magazine. While I can understand how difficult this must be for them, I think "within the next three years" is a bit broad. One additional problem for me has been a crashed computer containing all of the Arduino source code and electrical schematics. I'm told that file recovery can be tricky but hope springs eternal.
Best wishes for a Happy New Hear,
F.C.
Is there anything I can do to help with recovery of the files etc? Would really like to build this later in the year.
Just checking on any progress regarding getting clones out in the field, be it bought plans, bought software, or open source freebee?
As soon as there are more of your hobbers out there then the TH-cam content will increase and hobbed gears may have a resurgence due to electronics.
I've touched on the cost of importing your American sourced encoder! Is there is there an encoder type, capability etc that I can try to match with a U.K. Sourced one, or shall I just bite the bullet.
Should I wait for you to publish buying links that you benefit from, or are you still unsure how you are going to proceed with this project.
If you are left to your own devices you will be trying to make Delrin copies of the Mars lander drive gears rather than the mundanity if finalising project info :o) also, if you are not quick off the mark, Banggood will be selling an inferior version!
Hello my friend I want help I want the code and method of installation please
Esto se logra dando un movimiento adicional en la herramienta e corte en un desplazamiento igual al angulo de la envolvente que también hay que sincronizarlo en el cabezal de hay la dificultad de la talla de un engranaje cónico
This is achieved by giving an additional movement in the tool e cut in a displacement equal to the angle of the envelope that also has to be synchronized in the head of there is the difficulty of the size of a bevel gear
This device is getting very clever with all these menu options. NASA will be knocking on your door soon at this rate.
Good to hear from you, Roger. BRB, someone is knocking at the door. I hope it's NASA and not British GCHQ agents here to tap my phones. ;-) The world has gone crazy!! Think I'll just forget about all this madness, spend some quality time cutting gears and try to relax.
please can you tell me where a find this readout device
Hi Moacir
This "readout" (I think you mean "controller") was designed and built by me for use in my shop and, as far as I know, is the only one in existence. I plan to make the design and code available to others some time in the future. Stay tuned.
Thanks for your interest,
F.C.
thanks
Can anyone plz tell me how to design gear shaper cutter
Hi Ranjeet,,
Designing gear cutters is a large, sometimes very complex topic. I suggest you start with reading about the topic in Machinery's Handbook. It has a lot of useful information on gears, gear cutting and gear cutters. Hope that helps.
F.C.
Al método le falta generar la envolvente y el diente del piñón en la cabeza del diente debe ser paralela para que quede bien mecanizado, existe mucha dificultad para tallar un engranaje cónico
The method is missing generate the envelope and the tooth of the pinion in the head of the tooth must be parallel to be well machined, there is much difficulty to carve a conical gear
Hi Oswaldo,
Thank you for your insightful comment. If I understand your comment correctly, yes, high quality conical (bevel) gears are difficult (impossible?) to make with inexpensive/simple equipment. However, as I pointed out, this technique works well enough for lower quality bevel gears.
Cheers,
F.C.
Nice metal work, but we are here to hear your bass playing.
Subbed
Any chance of discussing the build with me?
Hi Alfred,
Sure. What would you like to know?
I understand the controller may be a ATmega, and an encoder maybe e6b2 variety I seem to be having difficulty with composing software to be a tachometer and then use it to divide for the stepper, can you advise. I got the gene for soldering and my brother got the gene for C++. I want make gears on an old Denbigh Horz mill with a sobbing tool, I have come to terms with machining making arbor and drive trains but this software is still a hurdle
Hi Alfred,
The microcontroller used in all of these videos is an Arduno Uno. All of the code is standard "arduinoese" (a variant of C++ I'm told) and compiled with the standard Arduino compiler. I used the Arduino 2 interrupt encoder library as well as the Arduino display library. To keep the cost down there is no extra hardware used to decode the quadrature output of the encoder. To keep the code as simple as possible the HHH (Home Hobby Hobber) controller does one thing at a time and is therefor a "state machine" ,I'm told. When performing the tachometer function it only does that. When it is performing a hobbing function it only does that. As a tachometer the microcontroller starts a timer and then counts up to the resolution of the cutter spindle (3200 in this case) and then stops the timer. Simple math converts the time for 1 revolution into RPM which is displayed. When performing a hobbing function the micro controller simply counts quadrature pulses from the encoder and outputs a control pulse to the motor driver when the count is reached. It then resets the counter and starts again. There is NO frequency division of any kind involved. The key to making this work is that both the hob spindle and the work spindle MUST be the same resolution (3200 in this case). If a gear has 20 teeth the counter counts to 20 and resets. If a gear has 71 teeth the counter counts to 71 and then resets. And so on, and so on.......... I hope this helps?
Hello Mr Cleff, I have had a look at the sequence that was proposed for me and your solution using another format. I have endeavoured to implement your solution but have not achieved a workable result. I am told that Arduinos use something called a sketch to implement the programme. Is it possible to share your sketch so that I may follow a proven path, if so my email is alfredrofe (at )gmail.com it may be the solution or a guide as to where I may improve my software.
Hi Alfred,
I regret that I am not able to provide you with my source code (Arduino sketch) due to copyright issues associated with publishing all the details of this project in a hobby magazine. The good news is that this magazine is distributed worldwide. The bad news is that I have no idea when it will be published. Good luck.
F.C.
All I can say is Bloody impressive mate! What's your day job? Rocket scientist??
Hi SAMRODIAN,
Thank you for your kind words. I'm a retired OBG (old bald guy).
Cheers,
F.C.
More like H³
Hi Nullpointer,
Thank you for your interest.
Cheers,
F.C.