3000 B CNC circular saw blade grinding machine

3000 B CNC circular saw blade grinding machine was built in 2023 in Poland. The brand-new machine, equipped with intuitive software and a CNC controller with memory for 128 programmes, is used to sharpen the following types of circular saws, mainly used in the furniture industry for cutting laminated chipboard:
– flat circular saws (GM)
– alternately mitre circular saws (GS)
– trapezoidal circular saws (GB)
– trapezoidal-flat circular saws (GA)

The 3000 B CNC circular saw sharpener allows for grinding tooth rake angles and tooth face angles in a single pass without removing the saw blade. The grinding wheel arrives at the tooth plane at two feed speeds – the slower feed increases grinding precision, while the faster one reduces sharpening time by up to half. To ensure precise feeding of the tooth under the grinding wheel, a claw feeder is used, which prevents the grinding wheel from colliding with a saw blade with different tooth spacing, which is particularly important in the case of reconditioned saws.

During machining, the saw blade is held firmly in place by a brake assisted by a pneumatic cylinder, which releases the pressure for the feeding of the next tooth. In this way, the circular saw blade does not move during sharpening and is completely locked in place, ensuring excellent machining quality. In addition to sharpening rake angles and tooth contact angles, the machine also allows trapezoidal teeth to be ground on both sides in one pass, thanks to the use of a swivel head with automatic 45° rotation in both directions.

The circular saw blade grinding machine has a full housing, which prevents splashing of coolant along with swarf outside the machine’s working area. At the end of the process, the coolant pump and grinding wheel are switched off automatically, guaranteeing low electricity consumption. The 3000 B CNC circular saw sharpener for all grinding processes consumes just 0.5 kW of power per hour of operation.

Example of sharpening time for a 350 mm diameter saw with 96 teeth:
– rake angle: 9 minutes
– contact angle, trapezoidal-flat tooth: 19 minutes

Technical specifications of the 3000 B CNC grinding machine

• CNC controller with 3 axes
• maximum circular saw blade diameter: 600 mm
• minimum circular saw blade diameter: 100 mm
• cutting speed: 39 m/s
• grinding wheel type: diamond
• grinding wheel diameter: 125 mm
• grinding wheel rotational speed: 6000 rpm
• cooling type: cooling emulsion
• cooling system tank capacity: 30 l
• power consumption: 0,5 kW
• power supply: 380-400 V; 50 Hz
• dimensions (L x W x H): 1100 x 900 x 1400 mm
• weight of machine: 300 kg