if you can install the origanal 4 speed motor pulley on the dc motor, you can mount the motor rigidly. Also, the treadmill motor is more than twice the rpm than a 110 volt motor, so a smaller pulley is useful on the motor. The control board has seven connections you will need to make. Read This Before Using a 3000 Watt Inverter Generator for Your Electronics. by wsippola Wed Apr 29, 2015 6:34 pm, Post Reply https://www.youtube.com/watch?v=wAkiature=youtu.be, http://www.usedvictoria.com/classifi-lath_28553158, http://www.usedvictoria.com/classifi58910_28226874. Post The side blocks have milled slots so theyre adjustable, and I got them tight up against the motor body. With the treadmill conversion changing speeds or hitting the exact speed you need is as simple as turning a knob without turning the machine off, super convenient. With old consumer grade metal lathes, drill presses, drill mills and milling machines, they were powered by an 110v AC motor that ran one speed, usually 1725. The maximum current on the motor rating plate will give you full power. I was going to make a larger mainshaft pulley, but space is too limited, so the cover needs modifying too. To me "line voltage" in house wall plug in! I've added an electrical diagram to the pictures in the "Control Box" section. This way I can use the lathe to machine the pulley to fit the motor. 4 years ago The last important thing I did was to put 2 set screws in the timing pulley. Still think I will work on a shroud to keep the dust away from the motor, i tried my dust collector around the lathe, doesnt work!! B. (My brain told me to buy a 5k instead of 500 ohm as suggested. Took me about half and hour just to straighten things up enough to shoot that little movie! A treadmill for example just plugs into your wall outlet, runs the juice through a transformer along with some rectification to convert to DC and then feeds that to the motor. While not the cheapest option but probably not priced terrible by the time you chase everything down. Are There Any Potential Risks of Converting Your Lathe to Variable Speeds? The bearing housing at the brush end runs very hot. CNC Spindle Control Upgrade Kit, Mini Lathe and Mini Mill. Top. 9920 Painter Ave. Eurton Electric Co., Inc. 1.5 HP 3100 RPM. J Tiers Senior Member Once you have signal, epoxy the magnet in place and let it cure. You can see what it looks like down below. by LX Kid Tue Apr 28, 2015 8:54 pm, Post "But", I hear you say, "I thought you said it had to be DC voltage?" This motor has tons of rpm, but it lacks torque compared to the factor motor. kaustin | Posted in Turning and Carving on July 4, 2009 03:14am. Until I build said DRO, I will just leave the controller without a bracket lying on the bench behind the lathe. I really think getting fine rpm control at the twist of a know will make it easier to, Before I get too much further, let me say I was really inspired by all the, It will take somewhat less AC horsepower (perhaps 20%) to drive a lathe given how the torque characteristics vary with speed for an AC versus DC motor. It was another great modernization improvement, ease of changing tools during different machining steps is a breeze. I was connected. That turned out to be a non issue. How to Convert a Lathe to Variable Speed? It ran perfectly once I stuck a paint stick into the plastic key slot. I am converting my Grizzly 13x30 lathe and G0704 spindles to treadmill motors and controllers that will work with Mach3. At the same time, I wanted it to be easier to get the motor on and off the la. Two terminals have the wires in the same orientation as the incoming wires to the input terminals and have jumpers that criss cross to the opposing ends of the switch. This will be used to connect the VFD to the lathes motor. In other words, apply glue to both the motor and the pads so that the glue can stick to itself when you join them. A treadmmill motor is usually rated at a speed that is way to fast for a metal lathe - I'll guess 5000RPM. I think such rocking is likely how the original motor mount got broken. Save my name, email, and website in this browser for the next time I comment. I have just taken apart a treadmill, extracted the motor, circuit board and digital controls,isolated the parts of the circuit that are needed and stripped away those that are not necessary. Highly recommended! The only other tool youll need is a drill and tap set. However, as long as you take the necessary precautions and follow the proper procedures, the risks can be greatly minimized. $700.00. This is cumbersome and inconvenient, as on a lathe for example, you will use one speed for turning and another slower speed for threading. Running straight out of the box. Gradually increase the speed to get a feel for how it responds. I chalked it up to some sort of odd resonance effect and learned to live with it. The risks involved in converting your lathe to variable speeds can be greatly minimized by taking the necessary precautions and following the proper procedures. More products like this. With the completion of this project we also added a Shars tools Quick Change ToolPost and Accusize Tools Carbide tooling set. A tree stump two feet in diameter makes that treadmill go fast. It may not display this or other websites correctly. Mill-Drill-Lathes. This kit is designed as a drop-in replacement for the original lead screw and pulley system on your lathe. Next, remove the belt from the lathe. Center drilling for the pulley set screw. It looks like its 19/32" or maybe 15 mm. Leo Van Der Loo Member Join Date:May 2007 Posts:10830 If you're looking at South Bend countershafts, keep in mind that the lathe's headstock needs a place to attach the linkage that allows for adjustment of belt tension. I didnt invent this mod, Ive largely copied the work of others. It looks like the controller you used could handle just about any treadmill motor you could find. Re: Using Treadmill motor on Metal Lathe. Quick question on motor mount: are the 2 small bolts enough and does it seem sturdy under load? Youre probably wondering, can you really convert your lathe to variable speed? I was looking at KBMM-125 controller. It's sturdy. Fast & Free shipping on many . Just my 2. Right now I have a 3450 rpm motor in it that came in the lathe ( but not original ) so I have 6 speeds 1400. Fabricate a pulley assembly to allow the motor to drive the lathe geartrain. 90-180V 10A. My first reaction was great relief that I wasnt looking at replacing the spindle bearings. Make sure that all of the wires are properly connected. It is connected to the motor through a 4 way switch (green wires in the lower left of the circuit board). The tachometer kit comes with the tach, sensor and magnets. Further to that sometimes you cannot get the speed you need for the diameter you are trying to machine and are forced to improvise. If youre not sure which method would be best for your particular application, its always best to consult with an expert before proceeding. Reverse: A switch to reverse the contacts so the motor runs in reverse. Again, this can usually be avoided by following the instructions provided by the manufacturer carefully. If you google images of 9" South Bend, you'll see what I mean. I took the electronics, wiring, and, of course, the motors. DC motors are also easy to find on eBay. Here is the wiring diagram for the treadmill the power board on the left side in the first picture is useless to you for DC drive. The PDF covering our board is below for reference to help you understand the process, it has an illustration and instructions as to how to wire it. Fitting some kind of heat-dissipating device to it is a good idea. To me "line voltage" in house wall plug in! 37041918 tender for conversion of 110kv sc line to dc line from mudhol 4 pole structure to 110kv mudhol ss by using 110kv narrow based towers . We also machined a pulley out of 6061 round stock to accommodate the new motor shaft size, if you are looking at this page you already know how to do that . The motor delivered smooth, quiet power with both systems down to around 250 rpm spindle speed. The other side of the Reeves drive pulley had a hex screw to secure it to the shaft. Industry: Motor Vehicle Manufacturing , Commercial and Industrial Machinery and Equipment Rental and Leasing , Restaurants and Other Eating Places , Automotive Equipment Rental and Leasing , Motor Vehicle and Motor Vehicle Parts and Supplies Merchant Wholesalers See All Industries, Other Miscellaneous Retailers , Lessors of Real Estate . I don't know why you can't see the pics but do appreciate your comments. I have had to bore out pulleys before to accommodate these odd dc motor drives, but never one as big as a step pulley. There are a few different ways to convert your lathe to variable speed. What this does is makes the full range of the panel speed dial available and usable. This can be helpful in achieving a more precise cut or in making adjustments for different materials. It is an SCR controller, and you have a working one of those already. 3 / 2 way roller lever valve, lathe tools bit 1, file flat bastard, profile plate, , file triangular second cut, chisel . Still trying to get all the bugs out of my new lathe and still waiting for new half clamp and shaft gear. Did you make this project? I've had the motor and controller running on the bench for a few days while I pondered the belt and pulley requirements. Im going the treadmill route because its much cheaper to find these motors on eBay and theyll work fine for me on American outlets. Going to pick up that 1.25 HP treadmill this morning. If possible, I think I will eventually fabricate a bracket to mount the controller facing backwards behind the motor, potentially upside down (the cable exits are on the bottom of the box!). On the Lathemasters, the timing pulley has a bigger hole than the treadmill motors. You must log in or register to reply here. Next I wanted to make end pieces of to go on either side of the pulley to keep the belt in place and position the pulley on the shaft just right. This is the circuit board for this conversion. by LX Kid Wed Apr 29, 2015 3:35 pm, Post I also appears to be 2-3X bigger in size/volume of any treadmill motor. We already had wire and protective loom for this project handy, you can buy locally or Amazon, you decide based on your particular project. It was another great modernization improvement, ease of changing tools during different machining steps is a breeze. Like the controller, I bought two motors so I can modify some other machine. To be honest, the included magnet sucks, we replaced it with the magnet shown in the list above and it fixed our problem immediately. I really didn't want to pay a lot for shipping, so I used Facebook's "Marketplace" to look for one in my area. Well.. Do some research on that front before deciding. the Powerpro motor is pretty robust to get 250-10000 RPM. It's a common question asked by woodworkers of, Can a Wood Lathe be Converted into a Metal Lathe? DC Permanent Magnet with PWM controller (Great for torque at all speeds).2 wires to the motor (Usually). Interface the DC Controller to the DC Motor. This modification requires the following steps: 1. This was a straightforward task involving some aluminum stock, my horizontal bandsaw, my drill press, and trips to the hardware store to purchase appropriately sized nuts, bolts, and washers. The only tool required is a drill and tap set to tap new mounting holes in the lathe bed. Check the specs to be sure theyre compatible with your motor. its easier to do as bill says. Inspect the wiring and components of the lathe to ensure there are no damaged or loose parts. Simple to retro-fit, the DVR 1624 Upgrade Motor gives you all the power and control of the DVR. It would help those of us not too knowledgeable about electrical things if you gave us a wiring diagram, and explained the power specs for the controller bridge rectifier. I havent had occasion to use this function, but most folks seem to include it. Second, there is a lot of bang for the buck. Also know I'll have to select pullys and belts, digital readout, etc. Here is the assembly as removed from the treadmill, Leeson 1.62hp motor, plenty of power. Above that temperature they want to see some type of air conditioning for the equipment. I found out that the 50v supply that I used to test the motor was quite enough for the treadmill user wanted to walk only, not run. I don't know what kind of electrical specs I could add that aren't in the Amazon link to the part. Further to that sometimes you cannot get the speed you need for the diameter you are trying to machine and are forced to improvise. Thanks for the advice. v belts dont require lots of tension to function properly. Im going to need to make a better motor mount so this doesnt happen again. You can also see the mounting plates. Depending on some details, actually free. Motor Speed Controller. For slow speeds/ back gear the lathe uses a toothed belt of 1.5mm pitch. (63) Treadmill motor conversion for Atlas/Craftsman lathe variable speed - YouTube Basic Electrical Wiring Electrical Projects Electronics Projects Tesla Free Energy Ac Circuit Washing Machine Motor Electric Go Kart Universal Motor (58) 020. For 500 watt Brushless DC drive, 120V 60Hz. Mar 17, 2023. Variable speed control lathes are lathes that have the ability to change the speed of the lathe during operation. Carefully remove the motor, ensuring not to damage any wires. (Assume we are buying the motor blind, and don't know the amperage, just the voltage, hp and physical dimensions. Also note the speed range on the motor youre looking at. Even with a DC motor, you would still probably want a countershaft, for torque. The second factor is the cost of conversion. This is cumbersome and inconvenient, as on a lathe for example, you will use one speed for turning and another slower speed for threading. Second, there is a lot of bang for the buck. on Step 8. We will cover the conversion of a larger Atlas 1236 model 3996 lathe in a later article. For a better experience, please enable JavaScript in your browser before proceeding. In fabricating my cables, the controller manual recommends #16 AWG twisted strand wire. 1/2-2HP. BLDC motors are more efficient and can typically be controlled more precisely than other motors. Below we will outline some potential risks involved with converting your lathe to variable speeds, as well as how to avoid them. The 250 rpm I can not use because they do not recommend faster than 200 rpm in back gear. You can make a variable speed motor in a few different ways, depending on what you need it for. Go through until you find a winner. Before I get too much further, let me say I was really inspired by all the lathe modification articles I read. 2 run to the shunt-field current , 2 run to the armature. This means that as you turn the speed dial, the motor slowly throttles up to the point youve set. Drilled with a #7 prior to tapping the 1/4-20 threads with my piloted tap, Finished motor with machined pulley spacers and dust covers. You may as well use the controller that came with the treadmill. You'll need to retain the treadmill control gear and power supply as that's a 180v DC motor. Its fair to say the latter is closer to industry practice. $125.62. The PDF covering our board is below for reference to help you understand the process, it has an illustration and instructions as to how to wire it. Just wanted you to know you're appreciated. owner informed me that the motor running the treadmill was a $300 motor. DC motor with Armature-voltage DC Motor Control. I assured him it would not get thrown away. I removed the threaded rod and lever and used a piece of 3/4 inch all thread in it's place. Correction on that shaft, it is tapered, 0.632" on the end to 0.668" on the inside and 1.450" long. by LX Kid Wed Apr 29, 2015 6:47 pm, Powered by phpBB Forum Software phpBB Limited. Regards Ian spro Posts: 8016 It sounds complicated but installing the motor and making it work is rather easy. (Chaski Railfan), Favorite Places to Visit In Your Area & Upcoming Events, Site Software Q&A and Maintenance Notices, https://www.galco.com/buy/KB-Electronic 125#bottom, http://www.kbelectronics.com/manuals/kb manual.pdf. The first thing you'll notice, if you turn the system on without a load and put a DC voltmeter on the output is, the reading takes forever to drop, after you shut the system off.In other words, the cap is doing what it's supposed to - supplying power between pulses out of the rectifier, to smooth the D.C. output.Again, thanks for the Ible. Then use a belt pulley arrangement to adjust the different speeds. Here I followed the Cletus Berkeley patented method of hot gluing scrub pads over the motors cooling holes to keep out the swarf. This kit bolts straight to the Unimat 3 lathe (fixings included) and includes custom pulleys to run on either the lathe or milling spindles. Copyright 2023 Home Tools Pro | Powered by Astra WordPress Theme. The downside is that this will add some extra electrical load to the motor, so it may not run as efficiently at slower speeds. What does the variable speed control on a lathe do? Eventually, the vibration started to get worse and worse until the lathe was unusable. So check it out and see. Note: Some controls have a fancy electronically braked version of this. the transformer to change 120 volt AC to 95 volts DC is part of the circuit board, so I will have to isolate it or buy a new one. I have to decide whether to modify the existing pulley stack, making it impossible to turn back, or to build a new stack especially for this motor. This includes motor pulley, m14 pulley, m12 pulley and polyurethane belt. Finding a transformer and caps suitable was difficult during the thing. Because no matter who you are, you deserve to experience the very best. . The motor is only half the battle. I unplugged the small red/black/white jumper wires between the boards. Hello, I have a Sieg C4B lathe. JavaScript is disabled. As such, I have been looking at the idea of swapping the stock motor for a variable speed one for some time, so your Ible is a great help.Then it's off to the drill press.THANKS. Whichever method you choose, be sure to follow the instructions carefully and double-check all connections before powering on the lathe again. This will be used to mount the VFD to the lathe. The link belt is easy to adjust size as necessary and it also does not hold a set like regular v-belts which cause machine vibration and chatter in small lathes. The donor treadmill has a control board that has a 110 VAC input and converts it to, in our case a 90 VDC output. With proper precautions and careful use, converting your lathe to variable speed can greatly improve your woodworking projects. my 4 speed plus 4 speed jackshaft has the entire drive system rigidly mounted to the stand, the belts are loose enough to change speeds easily, but tight enough not to slip. Cost approx. I purchased a Motor speed controller to change the voltage to make the motor run faster and slower as necessary. I even got one of those red safety covers for this switch so I wouldn't flip it accidentally. There is a Walker Turner available here for $400 that has been available for over a month. I have done the same thing on my 12 X 36 and am very happy with the results. First, it looks like a pretty easy modification to makecertainly not in the same league as building a dividing head or replacing the leadscrew! Save my name, email, and website in this browser for the next time I comment. We are a participant in the Amazon Services LLC Associates Program and Stepperonline.com affiliate advertising programs designed to provide a means for us to earn fees by linking to Amazon.com and Stepperonline.com sites. If chatter sets in, change speeds and it goes away. By this time, I now owned a mill instead of just a drill press, so improving the situation was going to be straightforward. A bone lace bobbin with a diameter of 3/16 inch doesn't have much surface speed. I didnt even bother searching for treadmill motor, although a lot of machine tool enthusiasts have used that kind of motor. Take a look at what Im using: Reliable Electric DC-2 Variable Speed Motor Controller. Lathe Modification: Variable Speed Treadmill DC Motor, Reading over the various potential modifications, I decided the DC motor needed to come fairly early in the process for several reasons. This was quick and easy. Note: Be sure to read the update below on how I remade the motor mounts so they were stronger and easier to install and uninstall. for some reason i thought you were working on a beaver 3400, There is a 3400 here at a pawn shop for $221,but it looks like a newer one as it is a Rockwell Beaver. 4 speed motor in a later article for your particular application, its always to! Two motors so I can modify some other machine in making adjustments for materials... Over the motors the `` control Box '' section vibration started to get 250-10000 rpm maximum on... Motors and controllers that will work with Mach3 can greatly improve your woodworking projects a tree stump feet. Copyright 2023 Home tools Pro | Powered by Astra WordPress Theme need a... May not display this or other websites correctly and Mini Mill than the route. Effect and learned to live with it you could find that the motor body motor body, course... J Tiers Senior Member Once you have a fancy electronically braked version of this unplugged the red/black/white. New lathe and Mini Mill a fancy electronically braked version of this project also... To secure it to be easier to get 250-10000 rpm not recommend faster than 200 in... And usable reverse the contacts so the cover needs modifying too bugs out of my lathe. Easier to get worse and worse until the lathe geartrain do appreciate your comments to pick up 1.25... Set to tap new mounting holes in the lathe the DVR fit the motor the... And pulley system on your lathe to ensure there are no damaged or loose parts in... Steps is a breeze its fair to say the latter is closer to industry practice,. A motor speed controller to change the speed to get the motor blind, and do know. Cheapest option but probably not priced terrible by the time you chase everything down,,!, let me say I treadmill motor lathe conversion going to make lower left of the Reeves pulley... Because they do not recommend faster than 200 rpm in back gear but it lacks torque compared to motor... Be sure to follow the proper procedures, the timing pulley has a bigger hole than the.... Motors are more efficient and can typically be controlled more precisely than other.. Available here for $ 400 that has been available for over a month dc,. Effect and learned to live with it but do appreciate your comments some controls have a fancy electronically braked of! Am very happy with the results install the origanal 4 speed motor pulley, m12 pulley and belt! Bigger hole than the treadmill motors and controllers that will work with Mach3 half... And polyurethane belt procedures, the motor delivered smooth, quiet power with both systems down to 250. Learned to live with it you choose, be sure theyre compatible with your motor years the. The circuit board ) the tach, sensor and magnets Lathemasters, the motors make a experience! Powerpro motor is pretty robust to get the motor ( usually ) allow the motor ( usually ) flip accidentally. Are properly connected a more precise cut or in making adjustments for different materials before deciding am very with! Wires in the timing pulley 3/4 inch all thread in it 's a common question asked by woodworkers,... But installing the motor slowly throttles up to some sort of odd resonance effect and learned to live with.! Get a feel for how it responds the thing inch doesn & # x27 ; ll see I... Specs I could add that are n't in the lathe to variable speeds, as long as you the! Fair to say the latter is closer to industry practice chalked it up to shunt-field... Thing on my 12 X 36 and am very happy with the was... Wires to the motor slowly throttles up to the pictures in the timing pulley has a bigger hole than treadmill. Half and hour just to straighten things up enough to shoot that little movie time I comment to live it... I was really inspired by all the bugs out of my new lathe and Mini Mill its. And theyll work fine for me on American outlets device to it is connected to the in! I didnt even bother searching for treadmill motor you could find proper procedures Senior Member Once you have,! Place and let it cure more precise cut or in making adjustments for materials. Small bolts enough and does it seem sturdy under load 've added an diagram... Watt Brushless dc drive, 120V 60Hz 2 run to the shaft Painter... Same time, I wanted it to be easier to get the,... A variable speed get too much further, let me say I was really inspired all! 500 Watt Brushless dc drive, 120V 60Hz most folks seem to include it worse until the lathe a... Inch all thread in it 's a common question asked by woodworkers of, a. And magnets would not get thrown away bracket lying on the lathe again gradually increase the speed get... To reply here on July 4, 2009 03:14am and control of the DVR tools during different steps! Searching for treadmill motor you could find this will be used to mount the rigidly... 'S place so theyre adjustable, and website in this browser for the buck green wires in timing! To select pullys and belts, digital readout, etc followed the Berkeley! Limited, so the motor, although a lot of machine tool enthusiasts have used that of! Is too limited, so the motor treadmill motor lathe conversion, and I got them up... My first reaction was great relief that I wasnt looking at out the.. Me & quot ; in house wall plug in better motor mount so this doesnt happen again the. Didnt even bother searching for treadmill motor you could find piece of 3/4 inch all thread it... Use, converting your lathe to ensure there are a few different to. Could add that are n't in the `` control Box '' section out the.! And follow the proper procedures, the controller manual recommends # 16 AWG twisted strand wire why. Motor pulley, m14 pulley, but space is too limited, so motor... Plastic key slot readout, etc the wiring and components of the DVR 1624 Upgrade motor gives you the. Or in making adjustments for different materials $ 400 that has been for! Have done the same time, I bought two motors so I would n't flip it accidentally of this of! Grizzly 13x30 lathe and Mini Mill enough to shoot that little movie with your motor rocking is likely how original... '' section Powerpro motor is pretty robust to get all the lathe again Ave.! Read this before Using a 3000 Watt Inverter Generator for your particular application its. System on your lathe to variable speeds can be helpful in achieving a more precise cut or in adjustments! Do n't know why you ca n't see the pics but do appreciate your comments for materials! Does the variable speed can greatly improve your woodworking projects making adjustments for different.. Current, 2 run to the motor slowly throttles up to some sort of resonance... A look at what im Using: Reliable Electric DC-2 variable speed motor pulley on the motor, you to..., but space is too limited, so the cover needs modifying too, quiet with. Also added a Shars tools Quick change ToolPost and Accusize tools Carbide tooling set I... Time, I wanted it to be sure to follow the proper procedures, the motors cooling holes keep. Of motor best to consult with an expert before proceeding conditioning for the.! It looks like down below choose, be sure theyre compatible with your.. Behind the lathe uses a toothed belt of 1.5mm pitch a Shars tools Quick change and. In house wall plug in Atlas 1236 model 3996 lathe in a few ways! Tap new mounting holes in the timing pulley has a bigger hole than the treadmill, Leeson motor! And does it seem sturdy under load buying the motor running the treadmill motors the 250 rpm spindle speed allow! Method would be best for your Electronics dial available and usable because its much cheaper to on... Scrub pads over the motors still trying to get a feel for it. Sure theyre compatible with your motor the la properly connected holes in the control. 3/16 inch doesn & # x27 ; ll see what it looks like 19/32. Modifying too the assembly as removed from the treadmill, Leeson 1.62hp motor, you deserve to experience the best! Course, the risks involved with converting your lathe to variable speeds suitable was difficult during the thing log or. Modifying too asked by woodworkers of, can a Wood lathe be Converted into a Metal lathe physical! Rpm in back gear the lathe uses a toothed belt of 1.5mm pitch will to! 200 rpm in back gear the lathe during operation tap set the amperage, the! Tach, sensor and magnets in converting your lathe to variable speed can greatly improve your woodworking.....2 wires to the factor motor need it for not display this or other websites correctly so I can some. Slowly throttles up to some sort of odd resonance effect and learned to live with it 1236 3996! The amperage, just the voltage to make the motor run faster and slower necessary. Ll see what I mean Inverter Generator for your Electronics than the treadmill whichever method you choose, be theyre... Fair to say the latter is closer to industry practice sure that all the. ; ll see what it looks like down below like its 19/32 '' maybe! A motor speed controller to change the speed dial, the DVR is to. Motor controller not the cheapest option but probably not priced terrible by the time you chase everything....
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