DIY Thickness Planer Feed Upgrade: Using Inverter Drives, DC/AC Motors, & Strong Electronics

Question

Hello. I would like to modernize the thickness planer by equipping it with an infinitely adjustable feed. I know that inverter drives are commonly us...

1 PAWEL · Answer

Maybe some reducer and gearbox.

zatronik1 · Answer

The mechanical part is not a problem. The thing is what engine can I use and how smoothly control its speed while maintaining rotation stability at varying loads.

kortyleski · Answer

Inverter working with feedback or for dc PWM controller also with feedback.

zatronik1 · Answer

As for the inverter I have already written but just some PWM. I have two DC 24V 600W motors and I could possibly use it. However, is this 600W not enough and how to control it exactly, I am looking for appropriate diagrams. I also consider using both engines in the drive because they are identical.

kortyleski · Answer

One 600W with a reducer is enough.

Added after 2 [minutes]:

But ... how to calculate the time and cost of making a power supply, a controller with speed control, then an inverter plus an encoder will come out cheaper.

zatronik1 · Answer

Maybe cheaper or maybe not as winter is long and I want it by next spring. Occupation for accurate winter evenings and some satisfaction. I got this planer for free and will be used several times a year. However, the duplicate drive itself will be useful for other planned devices.

zatronik1 · Answer

Hello.
Still such a question in the subject. Looking through the resources, I found the motor from the washing machine on the plate is 330 / 550W or could such a motor manage? I have a controller for it on the TDA1085 with a potentiometer for speed control. It is a system with a tacho generator and keeps the rotation quite stable. However, I have no idea what the power demand of such a feed is, maybe some colleague has access to such a planer where the feed is operated by a separate engine and can check it.

Anonymous · Answer

About 0.75kW as standard. 4-19m / min (for shaft speed 4600rpm and knives = 300 knife strokes per second). For slower machining, proportionally lower feeds. A closed-gear, three-phase motor gearmotor, you can even try the 87 Hz technique with an inverter. Better yet a two-speed motor to avoid low frequency operation. Or an ordinary mechanical variator. Or with a primitive machine, multi-stage pulleys and a fast eccentric tensioner ...

zatronik1 wrote:
I found the motor from the washing machine

How do you want to use this open toy in a dusty environment? Sparks and wood dust in one place? You write in the Electro Machines and Devices section, not Hyde Park ...

zatronik1 · Answer

Thanks to colleague for saying. I accept criticism with this washing machine idea really poorly thought out. On the other hand, a rather obvious solution with an easily transferable gearbox will be used, because after consulting a professional carpenter it is completely sufficient and without cost as I have everything at my disposal.