Characteristics and Safety Operating Procedures of Centerless Grinding machines

Centerless Grinding machines is performed on a centerless grinder, where the workpiece is placed between a guide wheel and a grinding wheel. One grinding wheel serves as the grinding wheel, while the other serves as the transmission wheel, known as the guide wheel. The lower part of the workpiece is supported by a pallet. The guide wheel is made of rubber binder, and its axis forms a zero angle with the grinding wheel in the vertical direction, driving the workpiece to rotate and feed.

When using centerless grinding, the grinding wheel rotates at a circumferential speed about 75 times greater than the guide wheel. Due to the frictional force between the workpiece and the guide wheel being greater than the frictional force between the workpiece and the grinding wheel, the tolerance level of the workpiece after being driven and ground by the guide wheel is IT6~IT7, and the surface roughness value reaches Ra0.8~0.01um.

1. When manually grinding workpieces, the distance between the hand and the grinding wheel should be at least 50 millimeters, and should not be held too tightly,

2. When feeding with a push rod, hold the push rod firmly and do not use metal rods.

3. When adjusting the grinding amount, the number of trial grinding workpieces should not be less than 3.

4. When correcting the grinding wheel, it is necessary to slowly feed and provide sufficient coolant to prevent damage to the diamond.

5. When the workpiece tilts in the middle of the grinding wheel, emergency stop is required

When grinding bar materials, it is required that the center between the material support frame and the grinding wheel and guide wheel be in a straight line. It is strictly prohibited to grind bent materials. When the workpiece has not been removed from the grinding wheel, it is not allowed to take it out. When holding the workpiece by hand, quickly grasp it and stop its rotation. 8. The workpieces on the shelf should be placed properly to prevent them from rolling and injuring people.

9. Wear gloves when installing the spiral wheel; Take the inner hole of the end face of the spiral wheel, and do not take the outside of the spiral wheel.

10. The blade of the Centerless Sharpener Board should be sharpened to prevent cutting through the hand.

11. Do not add large materials that exceed the specifications. When large materials are found, they should be taken out immediately to prevent accidents.

12. The replacement of grinding wheels should follow the general safety regulations for grinders.

The following precautions should be taken when operating a centerless grinder:

(1) Before starting up, check the surrounding condition of the machine. No items should be placed on the machine, and the workpieces should be arranged neatly. The WeChat account for metal processing has good content and is worth paying attention to

(2) Before starting up, check whether the parking space of the container is normal, the water level of the cooling water tank, the gap between the grinding wheel and guide wheel and the supporting blade are normal, and whether there are any working objects or debris in the machine tool.

(3) Before starting up, check whether the switch is reliable and confirm whether the safety protection of the protective cover is effective.

(4) Turn on the power, activate the hydraulic switch, observe whether the pressure on the hydraulic gauge of the machine tool is normal, and then check whether there is oil flowing through each mirror and pipe.

(5) Before starting up, the grinding wheel and guide wheel dressing seat must be wiped clean, and the cup must be filled with oil.

(6) Before starting up, the operator must be trained according to the operation manual to understand the various work operation procedures

(7) After the above confirmation is correct, the machine can be turned on.

(8) Turn on the main power to the ON position. 09: Turn on the hydraulic switch to the ON position:

(9) Check the hydraulic system mirror and stabilize the oil gauge before starting the grinding wheel and guide wheel.

(10) After the grinding wheel and guide wheel are running normally, turn on the water pump and adjust the water volume to the appropriate level.

(11) Adjust and grind 1-3 workpieces, first check the size and appearance of the workpieces, and place the adjusted products in the adjustment box.

(12) Adjust and grind 1-3 workpieces, first check the size and appearance of the workpieces, and place the adjusted products in the adjustment box.

(13) Batch production can only be carried out after passing the inspection.

(14) After starting production, the operator must perform self inspection on the first sample according to the operation manual and record it.

(15) When abnormalities occur during the production process, the machine should be immediately stopped and reported, and relevant forms should be filled out.

(16) When shutting down, turn the water pump motor switch to the OFF position to stop the water supply and remove the work object stuck in the machine tool.

(17) The grinding wheel and guide wheel should be continuously idle for more than 5 minutes to stop the water supply and prevent the grinding wheel from becoming unbalanced when restarted. After drying the water, turn the power switch of the grinding wheel and guide wheel to the OF position. (18) After the grinding wheel and guide wheel of the centerless grinder stop, turn the oil pressure switch to the OFF position (do not stop the oil pressure motor first to avoid oil loss and wear on the bearing and spindle).