rough so good

During our development of new high accuracy parameters, we came across some neat stuff. More to come soon, but for now, here’s how to kick some adaptive clearing ass.

While performing research and development on settings for High Accuracy Mode B, we stumbled upon what we believe are the first real High Accuracy parameters released from the factory. These settings are connected to a new High Accuracy interface that is installed (but not turned on) in v8.0 of the C-00 firmware. There is lots of great stuff coming into your Speedio from all this soon, but we were so exited by our initial tests, this had to be shared.

The biggest shock? High Accuracy Mode A is a beast! Like most, we had assumed Mode B was the new thing worthy of all our attention, while Mode A was only put on the Speedio so it would run code designed for older Brother machines. We were wrong; by every indication we’ve seen, Brother control engineers consider Mode A to be the de facto setup for all rough material removal (including semi-finishing of 3D surfaces) and the mode for attaining maximum accuracy. Mode B is used by the factory exclusively for finishing.

So how big a beast is Mode A for roughing?

Star Artefact Roughing Test Iteration
500ipm Cutting / 600ipm Non Engagement (Programmed)
Fusion 360 2D Adaptive Clearing
— .015 Stock to Leave
— 0.0005 Tolerance
— Smoothing Off
— 307kb of Code

Raw Code : 1:05.3, significant gouging on 3 of 5 corners
Yamazen M287 Test Code: 1:30.9
New Factory Rough Strategy: 1:14.5

Try as we might, and even using what we’re learning from these new parameters, we could not get Mode B in any configuration, to come close to Mode A. We were also pretty shocked by the machine motion - it’s that right combination of violence and smoothness that you usually see in demos for really exotic machine tools.

Setup

1. Look over your Machine Parameters/High Accuracy - Common tab. If you’ve been like us and futzing with these numbers to make Mode A or B run better, revert back to stock. You’ll find the factory settings in the manual.

2. Enable parameter modification in I/O Mode, Input Output Screen, Versions tab (on the far right). Set Parameter Change to 1 (Enabled)

3. Go back to Machine Parameters / High Accuracy - Common. We will change one number “Reference Feedrate A” (on v8.0, this is parameter 8003). Set it to 20000 mm/min (stock is 10000mm/min). Back out of the data bank, confirm/save changes, and hit reset.

4. Now to install the goodness in the User Parameters/High Accuracy/Mode A

5. We’ll use M265 and make it act like the marketing promised:

   • Corner Deceleration Override: 800

   • Arc Deceleration Override: 6000

   • Curve Apprx Deceleration Override: 6000

   • Smooth Path Offset Level: 1

   • Smooth Override: 64

   • Cutting feed time constant selection: 0

   • Minute Block Deletion Distance: 0.010mm

Usage

Obviously, this is a Mode A code, so if you’ve festooned your programs with Mode B codes and are use to randomly switching between them without using the cancel code (M289), you’ll need to put a little more thought into using this. Mode A codes need to be canceled with an M269 before Mode B codes can be activated. For those of you using Manual NC or hand tweaking code, no big deal. If you’ve set a post up to automatically apply Mode B codes, you’ll have some work to do.