1. Product Introduction
Welcome to the M2630-K2 CNC pelletizer hob grinding machine manufactured by Nanjing Weigao. This machine is suitable for sharpening the rake faces of indexing cutters such as straight-flute hobs and formed milling cutters.
It adopts an independently developed two-axis CNC system with a Chinese interface. The entire grinding process is controlled by servo motors. The machine working program uses variable programming, which can edit, store and recall different cutter grinding programs. The operator only needs to input corresponding variable data to perform a fully automatic grinding cycle. The operation is simple, practical, easy to learn and master, and can be quickly operated by ordinary workers.
2. Main Technical Specifications
- Maximum diameter of grinding hob: 260mm
- Maximum length of grinding hob: 300mm
- Cross travel of grinding head: 600mm
- Longitudinal travel of grinding head: 200mm
- Maximum distance between two centers (tailstock & indexing head): 580mm
- Height from worktable to spindle center: 160mm
- Grinding wheel lifting stroke: 150mm
- Grinding head motor power: 380V/50Hz/1.5kW
- Grinding head speed: 3000rpm
- X-axis servo motor: 1.8kW; Y-axis servo motor: 1.8kW
- Grinding wheel specification: Dish wheel 200×20×32
- Overall dimensions (L×W×H): 2000×1450×1700mm
- Machine weight: 2000kg
3. Main Structure & Technical Features
- The machine bed and main structural parts are made of high-strength high-quality cast iron, stress-relieved by effective aging treatment to enhance stability, reduce vibration, and ensure high precision during cutter sharpening.
- Castings are analyzed by finite element method (FEM), with reasonable structural strength and rib arrangement for high mechanical rigidity.
- Extra-wide base and column adopt box-type structure; the saddle is widened and lengthened with heavy-load full-support design, ensuring solid structure and heavy cutting capacity.
- The machine adopts oil-water separation design, effectively separating lubricating oil from cutting fluid to prevent fluid deterioration and ensure processing quality.
4. High-Precision Spindle Grinding Head Motor – Features & Parameters
Features & Advantages
High efficiency, high power factor, high torque, low noise, low vibration, low temperature rise, strong overload capacity, small radial runout at shaft end; dustproof and waterproof.
Technical Parameters
- Insulation class: F; Protection class: IP54
- Voltage: 380V/220V; Frequency: 50Hz; Power: 1.5kW; Rated current: 3.75/6.46A; Speed: 3000r/min
- Spindle bearing: Back-to-back angular contact ball bearings
- Spindle runout accuracy: 0–5μm
5. CNC Indexing Head Technical Parameters
| Worm gear reduction ratio | 1:75 |
| Total transmission ratio | 1:90 |
| Max. table speed | 11rpm |
| Min. indexing unit | 0.001° |
| Servo motor power | 2KW |
| Servo motor torque | 8Nm |
| Rated load capacity | 80KG |
| Clamping torque | 120Nm/Mpa |
| Max. output torque | 80Nm |
| Indexing accuracy | ±12” |
| Repeat indexing accuracy | ±5” |
| Table center taper hole | Morse No.4 |
| Taper hole runout | <<0.01mm |
6. Machine Accuracy
| No. | Item | Parameter |
| 1 | X/Y axis positioning accuracy | 0.01mm |
| 2 | Center runout accuracy | 0.003~0.008mm |
| 3 | Grinding head spindle runout accuracy | 0~5μm |
| 4 | Indexing positioning accuracy | ±12” |
| 5 | Indexing repeat accuracy | ±5” |
7. Main Configurations
| Component | Brand |
| CNC System | Xinje |
| Low-voltage components | Schneider |
| Servo motors | Xinje |
| Linear guideways | HTPM |
8. Environmental Requirements
| Power supply | 380V±10V、50Hz |
| Ambient temperature | 0～40℃ |
| Ambient humidity | 35%～65% |
| Air supply | Clean and dry air, pressure 0.3MPa |
| Vibration isolation | Isolate from vibration sources |
| Grounding | Independent and reliable grounding: Drive an iron rod deeper than 0.5m into the concrete near the machine, fix it with concrete, then connect to the grounding bar in the electric cabinet with a single-core copper wire of diameter ≥2.5mm. |
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