CAD CAM Engineer CNC Granite Machining

Scope of Work :

The CAD / CAM Engineer will be responsible for the entire digital fabrication pipeline , covering :

2D Drawing Interpretation & 3D Conversion

Import, clean, and prepare 2D architectural or sculptural drawings (DWG / DXF / PDF).

Generate accurate 3D CAD geometry (solid / surface / mesh) suitable for stone machining.

Convert conceptual sketches, hand drawings, or photographs into 3D models.

Align all models to Vasthu-based coordinates, datum, and reference axes.

3D Sculpting & Detailing Preparation

Collaborate with STL artists and sculptors to refine organic or figurative forms.

Optimize mesh geometry, correct topology, and prepare STL / OBJ files for CAM readiness.

Ensure seamless continuity between adjoining components (columns, beams, panels, etc.).

CAM Programming & Toolpath Generation

Develop multi-axis toolpaths (3-axis, 4-axis, 5-axis) for all machining stages :

Roughing / Semi-finishing / Finishing / Polishing / Engraving.

Simulate machining operations, avoiding collisions or gouges.

Post-process verified G-code compatible with CNC controllers (Fanuc / Siemens / Syntec).

Calibrate tool offsets, wire saw parameters, and spindle feeds to match granite density (Mohs 6–7).

Machine Integration & Execution Support

Coordinate with CNC operators for setup, fixturing, and block orientation.

Validate output dimensions, surface accuracy, and artistic detailing.

Adjust feed rates and coolant flows for tool life and finish optimization.

Document tool libraries and machining parameters for repeat jobs.

Quality, Documentation & Data Management

Maintain CAD / CAM file archives with proper revision tracking and metadata.

Generate setup sheets, toolpath documentation, and machining time estimates.

Maintain compliance with MAMAT standards for accuracy (±1 mm) and repeatability (≤ 0.5 mm).

Collaborate with QA and structural teams to validate as-built geometry.

Software Proficiency (Full Pipeline) :

2D to 3D Design Conversion :

AutoCAD / DraftSight / BricsCAD – 2D drafting and layout base.

Rhino 3D / SolidWorks / Fusion 360 / Creo – for parametric 3D modeling and assembly.

ZBrush / Blender / Meshmixer – for organic sculpting, mesh repair, and STL cleaning.

Reverse Engineering & Scanning (if applicable) :

Geomagic Design X / MeshLab / PolyWorks – for converting 3D scan data into CAD surfaces.

CAM Programming & Toolpathing :

Autodesk PowerMill / Mastercam / RhinoCAM / WorkNC / Fusion 360 CAM – for generating toolpaths for 3-, 4-, and 5-axis CNC granite machining.

Simulation Software : Vericut / NC Viewer / ModuleWorks for collision and kinematic simulation.

Post-processing : Controller-specific postprocessors (Fanuc / Siemens / Syntec).

File Formats to be Managed :

Input : DWG, DXF, PDF, STL, OBJ, IGES, STEP.

Output : NC / G-code, CAM setup sheets, simulation files, technical drawings.

Qualifications & Experience :

Education : Diploma / B.E. / B.Tech. in Mechanical, Mechatronics, Production, or Industrial Design.

Experience : Minimum 3–5 years in CAD / CAM programming for stone, marble, or metal machining.

Preferred : Experience with granite or hard stone materials and large-format 5-axis macines.

Technical Skills :

Deep understanding of toolpath strategies for hard stone.

Expertise in tool calibration, feed / speed optimization, and coolant management.

Knowledge of diamond tool selection and wear behavior.

Familiarity with robotic or gantry-based CNC systems.

Behavioral Competencies :

Detail-oriented and methodical with artistic sensitivity.

Strong spatial visualization and analytical thinking.

Ability to work cross-functionally with sculptors, designers, and engineers.

Dedication to quality, heritage, and innovation.

Deliverables :

Approved and verified toolpaths for each stone component.

Setup sheets and machining logs for traceability.

3D and 2D data archives with full documentation trail.

Feedback reports for machining accuracy and optimization.