MK8340 Ultra-High-Speed CBN Convex-Concave Composite Surface Follow-Up CNC Grinding Machine
Category:
Product Description
Typical machined parts
Main features of the machine tool
■ Siemens 840D SL CNC System from Germany
■ Compatible with robotic arms
Machine tool configuration
■ Adopts the German Siemens (SIEMENS) 840D SL CNC system;
■ Adopts camshaft CNC grinding software with our company’s proprietary intellectual property rights;
■ Equipped with an integrated online grinding wheel dynamic balancing, empty-travel elimination, and anti-collision device by Italian Marposs;
■ Equipped with the AROBOTECH automatic tracking center frame from the United States;
■ The headstock features high-precision, high-rigidity hydrostatic bearings and a Siemens torque motor;
■ It can be equipped with a robotic arm for loading and unloading, enabling fully automatic control and meeting the requirements of automated production on assembly lines.
Grinding wheel head
■ Wheelhead feed
The grinding wheel feed utilizes cylindrical hydrostatic guideways developed with our company’s proprietary intellectual property. Both the large and small grinding heads are equipped with electric spindles featuring hydrostatic and hydrodynamic bearings, also developed with our company’s proprietary intellectual property.
■ Grinding wheel spindle
The machine tool employs a dual-grinding-head, dual-feed system for follow-up grinding. The large grinding wheel has a diameter of 400 mm, and its spindle can reach a maximum speed of 5,000 rpm. The small grinding-wheel spindle can accommodate a 125-mm diameter grinding wheel with a maximum speed of 15,000 rpm, enabling the grinding of complex-shaped composite surfaces as well as concave and convex cams.
Work accuracy
| Base circle runout tolerance | Full lift tolerance of the cam | Cam adjacent lift tolerance | Cam phase angle tolerance | Surface roughness |
| ±0.015 mm | ±0.025 mm | ±0.006 mm/° | ±10' | Ra ≤ 0.4 μm |
Main specifications and technical parameters
| Item | Specification | Item | Specification |
| Maximum length of machined parts | 1000mm | Tolerance for non-circular section contour curves | ±0.025 mm |
| Maximum diameter of machined parts | φ400mm | Adjacent lift tolerance of non-circular section | 0.005 mm/° |
| Maximum weight of machined parts | 160kg | Grinding diameter range | 0.005mm |
| Maximum eccentricity of non-circular parts | 50mm | Grinding surface roughness | Ra ±0.4 µm |
| Maximum linear speed of grinding wheel (CBN grinding wheel) | 120mm | Number of linked axes | Six-axis two-linkage |
| CBN grinding wheel specifications (grinding outer concave and convex wheels) | φ400 × φ152.4 × B mm φ125 x B (≤40) mm | Numerical control system | SIEMENS 840D SL |
| Workpiece speed (constant linear speed) | 0-300rpm | Total machine power | 100kw |
| Base circle runout tolerance | 0.015mm | Total weight of the machine | 22000kg |
| Tolerance for the position angle of non-circular sections | ±10' | Machine tool external dimensions (length × width × height) | 6400x2450x2100mm |
Key words:
MK8340 Ultra-High-Speed CBN Convex-Concave Composite Surface Follow-Up CNC Grinding Machine
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