The DVR XP was just the start of the story (and more recently, the DVR 2024) – a lathe with a direct drive motor. But not just any motor – a fully computer-controlled compact, powerful, state-of-the-art digital variable reluctance motor. This provided a significant number of benefits, including a motor that can both sense load and immediately react to load changes to maintain a constant speed. Happens to provide significant power savings as well, seeing as when there isn’t any load, the power consumption of the motor drops right away. So power is consumed only when needed, and only the amount that is required for the load applied.
The computer can also detect other adverse conditions, such as if the shaft is locked, if the tool is digging in etc, and immediately cuts power to the shaft. Given the spindle of the motor is the drive for the machine, there is no loss in belts slipping, loss in gearing or other methods to transfer the motor power to the chuck. There is a significant decrease in the amount of noise produced compared to a traditional motor and belt (or gear) solution.
The lathe obviously benefits greatly from having a DVR motor as its power source, but it isn’t the only machine that could.
The next chapter in the story was the introduction of a DVR motor to the ShopSmith PowerPro- the first use of the DVR in an independent manufacture’s product. (Yes, I know there is a Record branded DVR lathe, but a rebranding doesn’t count!)
Then of course is the DVR Drillpress. But that is not the only tool that will have the DVR motor added to it. For one, if you own a Nova 1624, there will soon be a DVR package drive that can be retrofitted to this, and other machines so they gain the advantages of the DVR motor. (Don’t forget remote control, such as the upgrade I did to my XP). For the 1624, it won’t be a direct drive, but will only use a single belt position, and all the speed changes will be done with the DVR motor alone. You will still have chisel dig-in sensing, the ability to upgrade to remote control, and the power saving benefits of the DVR motor. Oh, and of course digital speed control through the full RPM range.
Now to the drill press – more info!
The extra information makes the drill press even more amazing – and making a drill press amazing is a feat in itself!
The load sensing function allows:
1. Slow Start – The slow start function detects the load on the drill bit. The motor will initially run at a slow speed (to make a small hole) and when a load is detected past a certain threshold the speed will then increase to the predetermined running speed.
2. Breakthrough Detection – Detects at a micro-second level if a breakthrough in material has occurred or not, if it has, then the speed will be increased to reduce the amount of burr/tear out.
3. Tool Analysis – indicates dull or damaged drill bits.
4. Proximity Sensors – detects chuck keys left in drill, proximity of hands and sleeves to the moving tool.
In addition, the DVR smarts means that there is intelligence available with its onboard computer;
Intelligent Speed Selection – no belts to change, you can digitally select your speed or choose your project and materials and drill bit, and allow the DVR Drill Press to do it for you.
Wide speed range – from 100 to 5500 rpm
Drill Depth/Tapping/Reverse Cycle – The tapping cycle uses sophisticated depth sensors to drill until a user defined depth is reached, and when the user lifts the drill press handle, the drill then runs in reverse
Speed Wheel – Activating the handle allows the motor to speed or slow down accordingly
Dull tool indicator
Wireless Remote Enabled – Can take optional accessory wireless wrist remote
USB ready for software updates
On board memory – allows user to store favorite programs and settings – useful in production environment or in returning to set/favorite projects.
Low maintanence – no belts to replace, and mechanically a very simple design with industrial grade electronics.
Full smartphone device integration – software upgrades could be available to allow integration with smartphones for control of panel and integration with project Apps.
Hang on – what was that last point?