M8220 Crankshaft Follow-up CNC Eccentric Grinding Machine
Category:
Product Description
Machine Tool Overview
The JKM8220 crankshaft follow-up CNC eccentric grinder is an advanced domestically produced CNC machine tool designed for grinding eccentric crankshafts used in refrigeration compressors, articulated robots, and other applications. It features high flexibility and a high degree of automation, enabling it to process eccentric crankshafts with varying eccentricity levels and different journal diameters. This machine is an ideal processing equipment for the mass production of high-precision eccentric crankshafts in multiple varieties.
Main features of the machine tool
■ Equipped with the German SIEMENS 840D sl CNC system, featuring 4 axes with 2-axis linkage;
■ Adopts eccentric circular CNC grinding software with independent intellectual property rights;
■ A motor-integrated electric spindle for grinding wheels featuring static and dynamic pressure bearings, with proprietary intellectual property rights;
■ High-speed grinding technology using a CBN grinding wheel with a speed of 100 meters per second;
■ The grinding wheel spindle is equipped with an empty-travel anti-collision device from (U.S. SBS or Italian Marposs);
■ The grinding wheel head feed system features cylindrical hydrostatic guideways paired with a German SIEMENS linear motor and a German HEIDENHAIN grating scale.
■ The headstock features a hydrostatic bearing spindle paired with a German SIEMENS spindle motor and a German HEIDENHAIN circular optical encoder.
Main specifications and technical parameters
| Project | Unit | Specifications | |||||||||||||||||||||||||||||
| Maximum length of machined parts | mm | 300 | |||||||||||||||||||||||||||||
| Maximum diameter of machined parts | mm | Φ50 | |||||||||||||||||||||||||||||
| Maximum turning diameter | mm | Φ100 | |||||||||||||||||||||||||||||
| Maximum weight of machined parts | Kilogram | 30 | |||||||||||||||||||||||||||||
| Radius of the crankshaft crank | mm | 0-20 | |||||||||||||||||||||||||||||
| External cylindrical diameter for longitudinal grinding | mm | 10-100 | |||||||||||||||||||||||||||||
| Maximum eccentricity | mm | 20 | |||||||||||||||||||||||||||||
| Top-tier center height | mm | 200 | |||||||||||||||||||||||||||||
| Spindle speed of the headstock | r/min | 10-250 | |||||||||||||||||||||||||||||
| Travel of the tailstock spindle sleeve | mm | / | |||||||||||||||||||||||||||||
| Spindle speed of the grinding wheel headstock | r/min | 7600 | |||||||||||||||||||||||||||||
| Maximum travel of the grinding wheel headstock (along the lead screw) | mm | 70 | |||||||||||||||||||||||||||||
| CBN grinding wheel specifications | mm | Φ250 × Φ20 × B (≤38) | |||||||||||||||||||||||||||||
| Maximum longitudinal travel of the worktable | mm | 400 | |||||||||||||||||||||||||||||
| Maximum peripheral speed of grinding wheel | m/s | 100 | |||||||||||||||||||||||||||||
| Average workpiece rotational speed (constant limit speed) | RPM | 10-300 | |||||||||||||||||||||||||||||
| Headstock spindle taper | MT | 4# | |||||||||||||||||||||||||||||
| Total machine power | Kw | 50 | |||||||||||||||||||||||||||||
| Total weight of the machine tool | Kilogram | 5500 | |||||||||||||||||||||||||||||
| Machine tool external dimensions (length × width × height) | mm | 2200×2000×1900 | |||||||||||||||||||||||||||||
| Roundness | mm | 0.002 | |||||||||||||||||||||||||||||
| Cylindricity | mm | 0.003 | |||||||||||||||||||||||||||||
| Eccentricity | mm | ±0.005 | |||||||||||||||||||||||||||||
| Parallelism | mm | 0.003 | |||||||||||||||||||||||||||||
| Outer diameter dimensional tolerance | mm | ±0.003 | |||||||||||||||||||||||||||||
| Surface roughness | Um | Ra ≤ 0.32 | |||||||||||||||||||||||||||||
Key words:
M8220 Crankshaft Follow-up CNC Eccentric Grinding Machine
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Address:No.58, Juye Road, Jiaojiang District, Taizhou City, Zhejiang Province, China
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