1:20:25
A 5.8 m part, one robot on a rail
Foam hull plug 5.8 × 1.12 m, KRL programs, 56 000 robot moves. 0 collisions and 0 gouges after the fixes the simulation pointed to; 5.4% stock left (roughing allowance and finishing cusps).
5-axis CNC and robot simulation
CncSim
See the part, the machine and every move before the first chip.
Your machine or robot cell built from its CAD assembly, your real NC and robot programs, verified collisions and the machined stock at 0.1 mm. CncSim is a Windows desktop application developed by Eulogika: data stays in house and no cloud service is needed.
Why simulate
A mistake found on the machine is the most expensive one
Collisions
A head, spindle or holder against the table, the fixture or the part means repairs and days of downtime.
Overtravel
A 5-axis move that needs more stroke than the machine has stops the program halfway through the part.
Gouges and leftover stock
A wrong offset or tool length shows up only at inspection, when the part is already scrap.
What CncSim does
From your machine and your program to a verified part
1
Machine model
Built from the builder's STEP assembly: axes, limits, spindles, index tables, robots.
2
NC programs
Fanuc, Haas, Heidenhain, Siemens and KUKA, ABB, FANUC robot programs, read the way the control reads them.
3
Material removal
The stock is cut move by move, down to 0.1 mm: the part as it will come off the machine.
4
Verification
Collisions, overtravel, gouges and cycle time, in a report linked to the NC lines.
Machine models
Your machine, built from your CAD assembly
- STEP and IGES assemblies split into components, axes and limits
- Real kinematic chains: moving columns, rams, A/B heads, index tables with stations
- Several spindles and tool mounts on the same machine
- Part names in any encoding: a 50-part assembly with Chinese names, read as is
Beyond 3+2
Multi-axis machines, not only machining centres
- Heads with A and B, index table T, stations C1 and C2: eight axes in one program
- Work offsets that follow the part on a rotating station (DWO)
- Rotary moves interpolated so the part turns under the tool, as on the machine
- Each tool on its own spindle: grinding wheel, rod, ball point
Verification
Every move checked before the first chip
- Machine against machine: heads, columns, tables, walls
- Tool, shank and holder against part and fixture
- Overtravel on every axis, rapids into material
- Gouges and leftover stock, from the machined stock against the finished part
- Each event jumps to its NC line; one HTML report per job
NC programs
The programs your controls actually run
| Family | Controls | What is interpreted |
|---|---|---|
| ISO | Fanuc 31i-B5, Haas NGC | TCP (G43.4, G234), tilted planes (G68.2), DWO (G254), inverse time (G93), drilling cycles, G41/G42 |
| Heidenhain | TNC, Klartext | L, C and CC moves, RL/RR, PLANE SPATIAL, TCPM, CYCL 200 |
| Siemens | SINUMERIK | TRAORI, CYCLE800, TRANS, drilling cycles, WAITM |
| Robots | KUKA KRL, ABB RAPID, FANUC TP | PTP, LIN and CIRC with approximation, tool and base data, external axes, loops, registers, subroutines, signals and sync |
All 22 programs of the test kit move the machine exactly as the reference motion. Codes that are not supported are reported with their line, never skipped in silence.
Material removal
A material model sized for real jobs
0.1 mm
Material resolution, with fine tiles only where finishing happens
168 s
Projected for 500 000 blocks at 0.1 mm on 8 cores, against a 180 s target
3.7–10×
Speed-up of the GPU compute kernel over the CPU, with identical material
Swept volumes in closed form for ball, flat and drill moves; 5-axis moves split by tool orientation; SIMD and all CPU cores. Figures measured on the development machine with the synthetic test kit, to be confirmed on customer programs.
A whole job
From loading to unloading, in one simulation
- 1Index table in
- 2Roughing
- 3Curved edge, C2 turning
- 4Ball finishing
- 5Index table out
No collisions or overtravel · 0.42% stock left over the part, no gouges · 13:23 estimated cycle time
Freeform mould, synthetic demo data
Real stock
Start from the stock you really have
- Point clouds from scanners and laser profilometers: XYZ, CSV, PTS, PLY
- Scans from several sides, or height maps taken from above
- Solid rebuilt on the measured points: within 1% of the volume in tests
- Castings, forgings and repair work, with their real allowance
Inspection
Look inside, measure, take the stock away
Section plane
Cut part, stock and fixture on any plane of the part frame.
Click to measure
Coordinates, stock left over the part and distances between points.
Path to NC line
Click the toolpath or an event and the timeline jumps to that line.
Stock as STL
The machined stock at any moment, as a closed mesh for the next setup.
Cycle time
From axis speeds and accelerations; ±10% target, to calibrate per machine.
Job report
One HTML page with view, events, messages and material figures.
Robots
Multi-axis robots in the same simulator
Any arm
6-axis arms, 7-axis cobots, arms on tracks or hanging from gantries, positioners in coordinated motion: one inverse kinematics for any chain.
Robot languages
KUKA KRL, ABB RAPID and FANUC TP next to ISO, Heidenhain and Siemens, with loops, sub-programs, functions and approximation zones. The same path in the three languages moves the robot the same way.
Same checks
Collisions (also arm against arm), overtravel, singularities, material removal and cycle time, as for the machine tools.
Several robots
One channel per robot on one timeline: sync points, robot against robot, one robot holding the part for another.
Linear and circular paths are followed within 0.05–0.1 mm between computed points, so collisions and removed material follow the real path.
Robot cells from the feasibility study
Feasibility study on synthetic data.
27:41
Two robots on one rail, half the time
ABB MultiMove: each robot roughs half of the hull, against 54:21 with one. Start and end synchronized (WaitSyncTask); robot against robot checked over time.
22:27
The part moves while the robot cuts
Dome finished while a 2-axis positioner turns it: KRL, RAPID, TP and ABB MultiMove. Surface within 0.04 mm.
2 robots
One holds, one machines
One robot turns a disc, the other mills its rim in synchronized moves. Rim within 0.04 mm, the arms never touch.
9 axes
Robot hanging from a gantry
The 3-axis gantry follows the pass, the arm stays in one posture. 26:11, 0 collisions, 0 gouges.
7 axes
7-axis cobot
Facing and trimming a plate: the program gives only tool poses, the elbow stays in its preferred posture. 0.01% stock left.
Machine designer
Machine data straight from the builder
- Every model value next to the builder's: travels, speeds, axis directions, tools, NC addresses
- Questionnaire in English, Italian or Chinese, printable or as an Excel table
- Answers imported and written back into the model
- 3D preview with axis sliders and limit checks
International teams
Ready for teams in Italy, Europe and China
- Interface, messages and reports in English, Italian and Chinese
- Number and date formats chosen apart from the language
- Language switch without restarting, even for messages already shown
- The same choice in the simulator and in the machine designer
Projects and deployment
Projects that travel with the job
Readable project files
Machine, control, tools, models and programs in one JSON file, with paths that move with the folder.
Verified packages
One .cncsim.zip for customers and builders, with SHA-256 fingerprints checked when it is opened.
Consecutive operations
Each program starts from the stock the previous one left; part handling and the whole sequence in one job.
Any Windows PC, data in house
A desktop application with no cloud service; it runs even without a graphics card.
Status
Where CncSim stands today
Available now
- Machine models from STEP assemblies
- ISO, Heidenhain and Siemens programs
- Verification and material removal at 0.1 mm
- Scanned stock, part handling, consecutive operations
- Machine designer; English, Italian, Chinese
- Robot cells: arms on tracks and gantries, 7-axis cobots, positioners; KRL, RAPID, TP; several robots
Next
- Validation on pilot customers' machines and programs
- Cycle time calibrated on real machines
- Measurements on workstation graphics cards
- Robots: more controllers, a customer cell
CncSim: Frequently Asked Questions
What is CncSim?+
CncSim is a Windows desktop application developed by Eulogika that simulates 5-axis CNC machines and multi-axis robot cells. It builds the machine from its STEP assembly, runs the real NC and robot programs, removes material at 0.1 mm and reports collisions, overtravel, gouges and cycle time linked to the NC lines.
Which CNC controls and robot languages does CncSim support?+
CncSim interprets ISO programs for Fanuc 31i-B5 and Haas NGC, Heidenhain TNC Klartext and Siemens SINUMERIK, including TCP, tilted planes, DWO and drilling cycles. For robots it reads KUKA KRL, ABB RAPID and FANUC TP. Unsupported codes are reported with their line, never skipped.
Can CncSim simulate my specific machine?+
Yes. The machine model is built from the builder's STEP or IGES assembly, with its real kinematic chain, axis limits, spindles and index tables. The machine designer collects the remaining data from the builder through a questionnaire in English, Italian or Chinese.
Does CncSim need the cloud or a powerful graphics card?+
No. CncSim is a desktop application with no cloud service, so programs and models stay in the company. It runs on any Windows PC, even without a dedicated graphics card; a GPU, when present, speeds up material removal.
How can I try CncSim?+
Eulogika runs pilots: bring one machine and one program. Eulogika builds the model from your STEP assembly, runs your real programs on it and shows you what the machine would do.
Pilot
Bring one machine and one program
We build the model from your STEP assembly, run your real programs on it and show you what the machine would do.