Fusion Tool Change Logic Customisation
The tool change is where many crashes and wasted seconds happen. We customise how your Fusion post handles every tool change: safe retracts, preselection, spindle and coolant sequencing, tool life and sister tools, broken tool checks and turret indexing.
Safe and fast, every time
A good tool change sequence stops coolant and spindle at the right moment, retracts safely (in Z first, then to the tool change position, and on multi-axis machines with rotaries unwound or cleared), calls the tool, reapplies length and diameter offsets, restarts the spindle and coolant, and approaches the part safely. Each machine does this slightly differently, and small mistakes cost either time or tools.
ENGIMANDI customises tool change logic in Fusion posts. We set retract strategy per machine, add next-tool preselection to save cycle time, output tool life and sister tool codes, insert broken tool detection after critical tools, handle turret indexing and live tools on lathes, and make every tool change block a safe restart point for operators.
Read tool change logic in post processors and safe retract strategies.
What you get
- Safe retract sequence
- Next-tool preselection
- Spindle & coolant timing
- Tool length & diameter offsets
- Tool life & sister tools
- Broken tool checks
- Turret indexing on lathes
- Restart-safe tool blocks
Tool change features
Every step around the change.
Retracts
Z-first, machine home or safe-plane retracts per machine.
Preselection
Next tool called ahead to cut change time.
Tool Life
Tool life groups and sister tool codes.
Broken Tool
Laser or probe breakage checks after chosen tools.
Turrets
Turret indexing, offsets and live tool activation.
Multi-Axis
Rotary clearing or unwinding before a change.
Tool change stack
Post engine and machine options.
Typical projects
- Preselection to cut cycle time
- Safe retract on a trunnion 5-axis
- Broken tool check after small drills
- Sister tools for lights-out runs
- Lathe turret with live tools
- Faster change on a drill-tap centre
How we customise tool changes
Observe
Current change sequence.
Define
Safe, fast sequence.
Build
Post logic and options.
Test
Dry runs and trials.
Measure
Time saved per program.
Tool change questions
Does preselection really save time?
On machines with a carousel or chain magazine, yes. The next tool is ready when the change happens.
Can we check for broken tools?
Yes, if your machine has a laser or probe system. We add checks after tools you choose.
What about restarting mid-program?
We output full modal state at each tool so operators can restart safely.
Do lathes need different logic?
Yes. Turrets index rather than change, and live tools need activation codes.
Is this a big change to the post?
Usually a focused change. We test it thoroughly because tool changes run on every program.