2021
Denford Triac 4 Axis CNC Mill
4 axis w/ closed loop steppers on all axes. Auto or manual lube of balljoints and ways (factory). Limit switches for X, Y and Z travel (factory). Factory hand scraped on all mating and sliding surfaces. Very light use, excellent condition. Up for sale is my early model Denford Triac in excellent condition It runs Linux CNC on a Pico Universal Stepper controller. All axes are closed loop stepper motors for maximum precision. This is one of the early models where they made them the highest precision and most solid builds. For example, on this model, not only are the ways and gibs scraped in on both sides, but also where the Z column bolts into the X&Y base. Later machines were ground on one side, scraped on the other, then scraped on both. The spindle head casting is about 55 lbs on this model as opposed to about 30 on later models, and the geometry makes it more solid against angular deflections. The new models are accurate as well, but the early ones make really nice precision cuts, The 4th axis is(Chuck body and adapter plate not included) a conversion from an import 4 rotary wheel. Little Machine Shop has adapters and chucks available for this type of rotary table. The Triac itself was manufactured in the UK as a CNC machine. Gibs are the prismatic type, also scraped in on all contacting sides. The spindle is R8 and a set of collets is included, but it also works well on the TTS system. As for the motor, it worked fine for me but can be easily upgraded to a modern servo. According to the Denford forums, some people are even boring out the spindle housing and fitting high speed spindles with good results. There is nothing mechanically stopping you from raising the Z column. It would just require 2 bars about 1 3/4 wide and precision ground down to what you want height to raise it to. Compared to a Tormach, this is much higher quality build. You can find blueprints of Tormach’s scraping online, and it looks low quality. Maybe they improved that. The Triac is 80s Sheffield iron casting, hand scraped by someone who most likely did it as a lifetime craft. The Z column casting is about 3/8 walls throughout. All of this shows in the quality of cuts. The machine shows minimal wear on the ways and the table surface is flawless. Denford as a company still makes CNC machines. They stock some parts for the Triac, and can usually get a drawing of what they dont have. They also have an active forum for their old machines with original drawings, retrofits, etc. LinuxCNC is a powerful free software with a thriving forum and regular updates. PathPilot is LinuxCNC with a proprietary UI. This machine is running AXIS, a common LinuxCNC program. A touchscreen version has been recently made if you want that. With this hardware and software setup, you can add physical speed and feed overrides, an MPG, etc. It works good with the “Generic Enhanced Machine Controller (EMC)” mill post processor if you use Fusion360. EMC is the old name of LinuxCNC. It should work with the Tormach Path Pilot pp as well, as it uses LinuxCNC commands. There are factory homing sensors, but they are the 2 wire type that need some kind of amplifier. If you want home sensors, they would best be replaced with the 3 wire type. It breaks down into somewhat liftable. The machine specs are in the photos. It is 110v, not 220. Contact me for more photos or information. The item “Denford Triac 4 Axis CNC Mill” is in sale since Saturday, June 26, 2021. This item is in the category “Business & Industrial\CNC, Metalworking & Manufacturing\Metalworking Equipment\Machining Centers & Milling Machines”. The seller is “dgun99″ and is located in Los Angeles, California. This item can’t be shipped, the buyer must pick up the item.
- Model: Denford Triac 4
- Modified Item: Yes
- Machine Type: Milling Machine
- Function: Milling
- Modification Description: 4th Axis, modern electronics
- Control: CNC
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