robodatech.CNC machines
Roboda B2 Spindle Kit
Bench moving-gantry router kit, 900 x 620 x 140 mm, profile rail and ballscrew
₹93,000.00 excluding GST
Specification
| Platform | Roboda B2 |
|---|---|
| Head | spindle |
| Operations | milling, cutting, engraving |
| Materials | Wood (Production), Plastic (Production), Acrylic (Capable), Aluminium (Light duty); not supported: Steel, Mild steel |
| Assembly time | about 10.7 hours |
| Lead time | 14 days |
| MRP incl. 18% GST | Rs 109,740.00 |
What this machine will and will not work
| Wood Production | This is the machine's production material. Ply, MDF, pine, teak, rubberwood and hardwood all cut cleanly with single- and two-flute cutters at 16 000-20 000 rpm. The reference cut is a 6 mm full-width slot 6 mm deep at 2 400 mm/min, which is 86 400 mm3/min at about 86 W - roughly a sixth of the installed spindle power and about a third of the machine's force budget, so wood work has real margin on this platform in a way that metal work does not. Run the dust shoe; MDF dust is the hazard, not the cut. |
|---|---|
| Plastic Production | Delrin, nylon, HDPE, ABS and PVC foam board machine very well at 12 000-18 000 rpm with a single-flute O-flute and a high chip load. The rule on this machine is chip load, not speed: too fine a chip melts the plastic and welds it behind the cutter. Run dry with air blast. Do not cut PVC sheet - milling it is fine mechanically but the dust and any local heating release hydrogen chloride, and this machine has no fume extraction. |
| Acrylic Capable | Cast acrylic profiles and engraves cleanly with a single-flute O-flute at 14 000-18 000 rpm and a deliberately coarse 0.10 mm chip load, finishing with a climb pass. Extruded acrylic melts behind the cutter unless the feed stays high, and any acrylic will craze if flood-cooled - use air blast only. Class is 'capable' rather than 'production' because getting a polished edge takes tuning per sheet, not because the machine struggles. |
| Aluminium Light duty | Light cuts only, and the whole machine is sized by exactly this. 6061 and 6082 with a 6 mm two-flute carbide at 12 000 rpm, 1.5 mm radial by 4 mm axial, 0.04 mm per tooth, 960 mm/min, air blast or a drop of paraffin, adaptive or trochoidal toolpaths, conventional direction. That is 144 N and it is the whole force budget. Here is the part that decides what the parts come out like: at 915 N/mm of static stiffness, 144 N of cutting force is about **0.15 mm of tool-tip deflection**. The cutter does not take the radial you commanded, it takes what is left after the machine has bent, and it gives it back on the next pass. So treat the sizing cut as a **roughing** cut, leave 0.3 mm on the wall, and finish at half the radial engagement followed by a spring pass at the same depth. Roughed only, expect about +/- 0.2 mm on a wall; with the finishing and spring pass, about +/- 0.1 mm. Expect brackets, plates, spacers and face plates in 3-10 mm stock. Do not expect to hog a slot, and do not expect a 0.05 mm tolerance out of a roughing pass on any machine in this price band. |
| Steel Not supported | Not supported, and no setting will change that. Steel at a 0.03 mm chip needs roughly 2 000 N/mm2 of specific cutting force - about 13 times the aluminium figure this machine was sized against - and it needs a spindle with torque at 1 500-3 000 rpm, which a 500 W brushless spindle with an 8 000 rpm floor simply does not have. Attempting it deflects the gantry, rubs rather than cuts, work-hardens the surface and destroys the cutter. Steel milling on a Roboda platform starts at RBK-E1. |
| Mild steel Not supported | Not supported, for the same reasons as steel, plus one more: hot-rolled mild steel carries an abrasive mill scale that a carbide cutter can only get under by taking a deep first pass, and a deep first pass is precisely what a 150 N, 915 N/mm machine cannot take. Engraving or scribing mild steel with a diamond drag bit is mechanically possible because it removes no material, but it is not milling and is not published as a capability here. |
Full specification sheet, drawings and what is in the kit
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