What is Crankshaft Grinder?

What is Crankshaft Grinder?

The crankshaft grinder is used for grinding the crankshaft and main journal of the engine in the automobile tractor and diesel engine manufacturers and repair shops. The resolution of the grinding wheel is 0.005mm.


General crankshaft grinder is suitable for grinding crankshaft and main journal of engine in automobile tractor and diesel engine factory and repair shop.
● the headstock adopts belt speed change, and three different speeds can be obtained.
● head frame and tail frame chuck can be of cross chuck structure.
● friction clutch is used in the transmission chain of headstock, which is convenient for adjustment and operation.
● table longitudinal movement, breaking movement and maneuver, with digital display, resolution of 0.005mm.
● quick forward and backward of grinding wheel rack, controlled by hydraulic device, with digital display resolution of 0.005mm.
● the grinding wheel shaft is Φ 80mm, with sufficient rigidity and good strength.
● the grinding wheel frame adopts a rolling guide rail.
● the lubrication of bed guide rail and grinding wheel rack guide rail is automatically circulated by oil pump.
● air cushion of tailstock can be selected to move forward and backward rapidly.


Technical parameter

Rotation diameter: 750 – 1400mm
Maximum length of crankshaft: 5000 – 12000 mm
Maximum weight of crankshaft: 3000 – 25000 kg
Center crank diameter: 140 – 250 mm
Width of center handle: 90 – 200mm
Eccentricity: 90 – 250 mm depending on the structure of the crank


Operating procedures for crankshaft grinder

1. The operator must be familiar with the operation sequence and performance of the machine tool, and it is forbidden to use the equipment beyond the performance.
2. Before starting the machine, check whether the handle and travel stop iron are intact and reliable and fasten the travel switch screw.
3. Before starting, add the specified lubricating oil according to the equipment lubrication chart.
4, start the lubricating oil pump, night pressure pump motor, check and adjust the night pressure system pressure, lubrication system pressure, rotate the grinding wheel shaft with the hand, check whether the rotation is brisk; move the grinding head crossfeed, check the relative position between the grinding wheel and the diamond pen and workpiece; move the worktable for 15-20 minutes, and discharge the air in the cylinder to eliminate the crawl, then adjust the stroke and speed.
5. Always check the grinding wheel for cracks. It is forbidden to refit it for end grinding.
6. The grinding amount shall be selected reasonably, and the grinding wheel shall not be stopped before leaving the workpiece.
7. It is forbidden to process without protective cover, and it is forbidden to knock the workpiece on the top or working surface.
8. It is forbidden to use cracked grinding wheel and blunt diamond.
9. When working, adjust the feeding position according to the size of the workpiece and the bumping blocks on the workbench.
10. Check the lubrication condition of the guide rail before operation, and the production can only be started after sufficient lubrication.
11. Check the tightness of the workpiece shaft belt regularly and adjust it in time.
12. It is necessary to check if there is any crack when replacing the new grinding wheel, and it can be used only after the second balancing test run is normal after the balancing installation and dressing.
13. Before shutdown, reset first, close the cooling nozzle for 2-3 minutes, and then close the grinding head motor and workpiece motor. After grinding head stops, close the hydraulic oil pump, lubricating oil pump and cooling pump.
14. After the completion of the work, clean the equipment, cut off the power supply and make a record of the spot check card.

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