A power lift for the popular RF30 style drill/mill machine. The first step in improving the operation of this machine. Two further episodes will cover more modifications.
I do not have records of the sprocket count, but the ration is roughly 2:1. The motor speed is 50RPM, so the drive is 25RPM. I do not believe that the ration is critical, it lifts without any apparent difficulty; the up and down rate are very similar.
hi friend, I copied your project and now that I would like to test it, I would kindly like to know what type of current and amperage I should use...for example 24v..how many amps? what type of transformer should I use? Thanks in advance for your kindness.
The voltage should match the rating of the motor you are using. My motor was 24v with a 30W rating- so rated current was 1.25A; however starting current may well be higher, so 2A gives some overhead. In practice, much depends on the gearing and the weight plus friction involved. If your motor is 24v I would aim for 2A, if 12v then 4A. The simplest way to provide this is with one of the modular power supplies widely available on eBay, Amazon, etc. Not really worth building your own these days...
my engine works at both 12v 30w and 24v 50w torque 15Nm...64rpm at 24V.... pulley ratio 14 teeth in the engine.. and 21 teeth in the lifting pin... this is what I had at home.. the lifting weight is similar to yours could you show me an Amazon link of what type of transformer do I need? sorry if my translation is not correct: Thank you.
Rather than using a transformer and components to build a supply (I did this because I already had them) I would buy a 24v DC 'open frame' power supply (it will be cheaper) with at least 2A rating. Another solution is to use the power supply from an old laptop- if you can find one for free (people throw them out) it may well work fine.
I wanted to ask you if the chain you put in the gears must be perfectly tightened or even if it has a little bit of play is it still fine? Why not, it's easy to make the perfect measurement...
@@Roberto-cc4el Chain drive is quite tolerant of both alignment and slack in the chain. A little slack is actually desirable, it reduces the friction a tight chain can have.
Started life in heavy electrical engineering, retired (eventually) from consulting systems design. Much in-between. Love trying to find what mathematicians call an 'elegant solution'- do not always succeed...
Thank you for the advice, now I'll try with a 24V 15A power supply that I have at home
What little setup. This the nicest version I have seen of this converssion
Thanks! It is certainly working well, I have had no issues with it.
Excellent great job I'm going to copy this on to my mill drill. Cheers
Thanks- let me know how it goes.
Great will be my project soon have motor ... just need scavenge gears..thanks
I like the size of your lift, compact.
Thanks! It worked out better than I expected. Two years on, and no issues...
@@Tensquaremetreworkshop I was worried about gear wear on mine. With the power lift and guide bar to stop rotation I moved it a lot more often.
Very neat, effective solution and well thought out.😀👍
Thank you!
Nicely done! can you please provide info on the gears used; # teeth etc.?
I do not have records of the sprocket count, but the ration is roughly 2:1. The motor speed is 50RPM, so the drive is 25RPM. I do not believe that the ration is critical, it lifts without any apparent difficulty; the up and down rate are very similar.
FYI - I counted the teeth from the video. 30 on the mill shaft & 24 on the motor. Thanks for the additional info.
hi friend, I copied your project and now that I would like to test it, I would kindly like to know what type of current and amperage I should use...for example 24v..how many amps? what type of transformer should I use?
Thanks in advance for your kindness.
The voltage should match the rating of the motor you are using. My motor was 24v with a 30W rating- so rated current was 1.25A; however starting current may well be higher, so 2A gives some overhead. In practice, much depends on the gearing and the weight plus friction involved. If your motor is 24v I would aim for 2A, if 12v then 4A. The simplest way to provide this is with one of the modular power supplies widely available on eBay, Amazon, etc. Not really worth building your own these days...
my engine works at both 12v 30w and 24v 50w torque 15Nm...64rpm at 24V....
pulley ratio 14 teeth in the engine.. and 21 teeth in the lifting pin... this is what I had at home.. the lifting weight is similar to yours could you show me an Amazon link of what type of transformer do I need?
sorry if my translation is not correct:
Thank you.
Rather than using a transformer and components to build a supply (I did this because I already had them) I would buy a 24v DC 'open frame' power supply (it will be cheaper) with at least 2A rating. Another solution is to use the power supply from an old laptop- if you can find one for free (people throw them out) it may well work fine.
I wanted to ask you if the chain you put in the gears must be perfectly tightened or even if it has a little bit of play is it still fine? Why not, it's easy to make the perfect measurement...
@@Roberto-cc4el Chain drive is quite tolerant of both alignment and slack in the chain. A little slack is actually desirable, it reduces the friction a tight chain can have.
Nice solution. What line of work are/were you in?
Started life in heavy electrical engineering, retired (eventually) from consulting systems design. Much in-between. Love trying to find what mathematicians call an 'elegant solution'- do not always succeed...