Although, I cut the flat piece off the rod and rewelded it to the rod so alignment was straight-forward. Thanks for taking a look. Treadmill motor speed controller for less than $30 - YouTube Secondly, I can use its weight to tension the belt without the help of tensioners, so that it actually becomes an advantage. Super Contributor; Posts: 1592 ; Country: treadmill motor = lathe? If not, I can always make a new pulley to gear it up. These pillars are attached to the lathe bed and the table top, using self locking nuts for the upper threads, and t-nuts for the bottom threads. Lathe Modification: Variable Speed Treadmill DC Motor. Did you make this project? Stay safe and healthy. I then test turn and cut off a few pieces of steel rod with various diameters. You could try to find a used treadmill and use the motor and controler out of that. The spindle did not quite fit the Taig factory supplied pulley and I had to make it fit, by filing it down with the motor running, and shiming the then undersized result. I installed the lathe onto the new table with the four steel stand-off pillars and affixed the motor onto the motor mounting board. DIY CNC projects, 3D printer, Mach3, Cambam, Probotix, CNC how to 31. However I find it frustrating to be confined to only certain speed settings, to make adjustments to the belt tension and the position of the lathe spindle head all the time, and not be able to fine tune the optimum speed while on the job. 1) I've found that under load the motor bogs down pretty quickly. 28:46 . Any wobble will, at certain speeds, cause resonant vibrations which degrade the performance of the lathe as well as produce undue wear on the spindle bearings and the connecting belt. The motor is installed at a lower elevation using a longer belt, keeping clear of the lathe bed so its bulk does not really matter. In order to use this new belt, I needed suitably sized pulleys. Switching on the power, I run the lathe from about 100rpm to 3000rpm, changing speed smoothly and continuously at any time. The motor, as expected, runs cool and provides high torque even at low speed. He's using it as a polishing machine for his rock and mineral projects. Well, I have to make do with what I can get. This drive consists of two split pulleys. Firstly, running a 110V motor from 90V reduces its power by a third, but this still gives me ample power with plenty of margin for the modest requirement of the Taig. Cross holes are drilled on the rims, tapped M5 to accept M5 grub screws for fixing onto the spindles. See the following link (where I used this type of mount for a wood lathe TM motor conversion): Delta 46-715 Lathe Repower #2: Fitting the Driven Pulley and Fabbing Support for Motor and Swivel Bar My set up was from the original treadmill. Inexpensive belts and XL pulleys can easily be purchased from on-line stores. The Wood … This motor has served me reasonably well over these two years. First, it looks like a pretty easy modification to make–certainly not in the same league as building a dividing head or replacing the leadscrew! I really wanted to convert our wood lathe to variable speed because there’s a lot of advantages to doing so. Mini Lathe DC Treadmill Motor Conversion Part 1 - Duration: 28:46. Wood Lathe. All wooden boards are made from either ¾" thick melanin laminated fibreboard, or plywood board. Second, there is a lot of bang for the buck. Hi I have a TM Motor with these specs that I hooked up to my wood lathe. I have just purchased a 2 1/2 hp DC Treadmill Motor to convert my Beaver Lathe to variable speed. When I first installed the lathe two years ago, I found that I had to prop up the lathe bed to allow more hand room for turning the axles on the cross slide. The clearance provided allows me to clean out chips very easily, and a lot of room to wrap my fingers around the cross slide dial handles. The simplest way to do this is to run an DC motor off an electronic speed controller. My cheap Harbor Freight lathe has served me well for simple turnings but it was a slow and cumbersome process to change the belt settings. The cross slide rest is one reason I want to keep this old lathe, I can do light machine work with it as well as wood turning. 5 / 5 ( 2 votes ) Author Topic: treadmill motor = lathe? The pulley belt is tensioned by moving and locking the motor closer or further away from the lathe. Variable speed lathe using a DC treadmill motor My 1958 Craftsman lathe came with a 1/3 HP AC motor and changing speeds meant stopping and switching the belt to another pulley. Having fabricated the table and the pulleys, I disassembled the original setup. May 6, 2013 - Treadmill motor speed control for a lathe. Good idea for a polishing type system, not sure about a wood lathe but I suppose it could be a good substitute for a low powered lathe. The lathe is now ready to be tested. When I bought my Taig lathe two years ago, I went through my junk pile and came up with a ¾hp motor. It may not be a DC motor in which case it won't work. 5 / 5 ( 2 votes ) Article by Daniel Edward I am happy that I have made this modification which allows me to use the lathe easily with more flexibility. I then raised the motor by swiveling it upwards on its hinges, and put the new 10mm belt onto the pulley tracks. The treadmill motor is bulky and heavy. This conversion is great for light to medium turning, but heat rise in non SCR rated DC motors like this is a problem when pushed hard. 1.75 HP Continuous Duty @ 90 VDC Amps 15 4200 RPM @ 90 VDC using an MC-60 control board. It now has VSD (variable speed drive) fitted. Once the motor is lowered, its weight provides the tension on the belt. This allows the motor to be raised and … Since the electronics were okay I salvaged the motor and control board. Lathe Modification: Variable Speed Treadmill DC Motor. Rubber padding feet are placed underneath the bottom board to minimize vibration being transmitted to the wooden frame onto which the lathe table is placed and attached. The Aussie Shed 17,324 views. Harbor Freight Lathe Conversion using a Treadmill Motor - Duration: 34:00. I replaced the thin v-belt which came with the Taig lathe with a new 10mm XL-240 timing belt, which provides excellent strength without being unwieldy. Blech! I was usually either going too fast to sand or too slow to turn hardwoods. All wooden pieces are put together with #10 wooden screws. I installed the electronic speed controller onto one of the side legs of the lathe table, connected it to mains as well as to the motor. Lathe Modification: Variable Speed Treadmill DC Motor. Moving a lever opens and closes the width of the pulleys to change the … I actually have three questions. I chose them to make use of some scrap boards I had on hand. The controller is rated at 0-90VDC PWM, 400W maximum output power. I turned a pulley that fit the rear of the spindle for direct drive.. Works real good I now have a treadmill motor running my 9x54 south bend lathe. The electronic controller does not heat up at all. Reading over the various potential modifications, I decided the DC motor needed to come fairly early in the process for several reasons. The treadmill motor is rated at 110VDC, 4hp input power, 4200rpm max. In the process, I had to rebuild the lathe table, fabricate two new pulleys, and purchase a new belt. In this new installation, I made four stand-off pillars, 1¼" tall, with a 5/16" length of #10-24 thread on top, and a ¾" length of 3/8-18 thread at the bottom. Power from the motor is transmitted to the lathe with belt and pulley. There is no magic in choosing the height of 1¼" but any shorter will not give the clearance desired. Share it with us. This board is attached to the backside of the lathe table with two heavy duty door hinges. This removes tension on the belt and gives it a longer service life. Speed Control for the Harbor Freight (34706) Wood Lathe. These were all recommended by a KB Electronics distributor. Like most households we had an old treadmill that had seen better days and was ready for the landfill. See the embedded video clip above. This proves to be inadequate as it still gives me little room to brush out chips from underneath the lathe bed. Lathe Modification: Variable Speed Treadmill DC Motor. This allows the motor to be raised and lowered by swiveling around them. Every time I moved the belt position on the pulleys to change speeds, I had to move the Taig spindle head and re-tension the belt. Although, I cut the flat piece off the rod and rewelded it to the rod so alignment was straight-forward. I also used them on grinders and polishers. A little research yielded a cheap solution -- a treadmill motor. I had a friend that did this and put it on an old Craftsman he had. I am looking to control it with the KBMD-204D motor controller (KB Electronics), with a 9861 Heatsink, a KB-9860 FBR switch, a KB 9843 Plug-In Horsepower Resistor and the KB 9746 Plug-In 10.0 amp fuse. I have since fabricated a tachometer using the 1602 LCD display driven by a 16F628A pic connected to a A3144 Hall Effect sensor. Saved from lumberjocks.com. How to buy a vintage wood lathe; Free Plans; Bearing Guide; Books; Sunday, November 23, 2014. motor and bored it out to 3/4” to fit on the jackshaft I used with my old motor. When the lathe is not in use, I raise the motor and prop it up with a wooden wedge. I have a DC 130 volt, 2 HP, 17 Amp treadmill motor that I want to use on my wood lathe. I had a 7x12 lathe that I used a treadmill motor and controller on.. The treadmill motor is mounted onto another piece of thick wooden board. In making these pulleys, I took care to make sure that they run true on the spindles. The treadmill motor is mounted onto another piece of thick wooden board. Also, the controller output of 90VDC max seems not to deliver the full power of the motor at 110VDC. In time, I intend to make a built-in sensor and display. The melanin laminated board is used for the table top, to save me the trouble of painting and protecting it from chips and lubricant when the lathe is used. Motor Speed Diy Cnc Cnc Projects Circuit Diagram Pinterest Diy Electric Motor Electronics Projects Garage Ideas Treadmill Shop with confidence. Please practice hand-washing and social distancing, and check out our resources for adapting to these times. I managed to get a used treadmill motor off the second-hand market, and to purchase a Chinese variable speed controller both at a very reasonable cost. 5 / 5 ( 2 votes ) Here's a few photos and some videos to show that something is happening to my CQ9325 bench lathe. However, I think that for most purposes it is good enough. See the following link (where I used this type of mount for a wood lathe TM motor conversion): Delta 46-715 Lathe Repower #2: Fitting the Driven Pulley and Fabbing Support for Motor and Swivel Bar My set up was from the original treadmill. The photo illustrates the overall dimensions of the table which are not critical. 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