How to maintain the grinding accuracy of CNC roll grinding machine
CNC roll grinding machine as the last key process of roll processing, the accuracy of the grinding machine is the key, the quality of the product is related to the quality of the roll, so many steel mills and roll manufacturers have to spend a lot of money to buy domestic and foreign roll grinding machine. High precision roll grinder is the key to processing rolls, but how to maintain the accuracy of the high precision roll grinder for a long time is the key. Roll grinding machine is only a key component of processing high-precision products, not all, then how can you keep the precision of the roll grinder for a long time does not decline?
Methods to maintain the high precision of CNC roll grinder:
The top is the core component of the grinder, the top of the dismantling, loading whether standardized to determine the accuracy of the grinder to maintain the length of life. The movement of the tailstock and the expansion and contraction of the sleeve also have a great influence on the precision of the machine tool. People are the center of the whole event, and the role of people should be given full play in grinding rolls. In order to maintain the high precision of the machine tool in a lasting manner, I have summarized the management methods to maintain the long-life precision of the grinding machine:
1, the top of the installation
1.1, on the top before, with 'Loctite' 755 cleaning agent will be the head, tail frame spindle inside the tapered hole and end face cleaning and wiping clean. The standard of cleanliness is: with eyes to observe the spindle inner taper hole and end face can not have any debris and stains.
1.2, before the top of the top, the top of the rear cone, the rear end face and the top of the front cone with 'Loctite' 755 cleaning agent cleaning and wiping clean. The standard of cleanliness is: with the eyes to observe the spindle in the taper hole and end face can not have any debris and stains.
1.3, strictly prohibit the use of any ill-fitting bolts for top tightening.
1.4、If any bad buckle is found on the top bolt, it is strictly prohibited to continue to use it.
2、Tightening of top bolts:
2.1 Bring the bolts by hand in a diagonal way.
2.2 Tighten the bolts with torque wrench in steps according to the diagonal way.
2.3 After the top is tightened, hit the rotary accuracy (runout), if the rotary accuracy exceeds the standard, check the reason, and do not continue to use it without finding out the reason.
3、Undoing the top
3.1 Loosen the top bolts one by one according to the diagonal way.
3.2 A person to help the top, a person unloading bolts; unloading bolts, take down the top gently on the top frame.
3.3 When unloading the top, if you find the lubrication status of the head and tail frame is not good, you must ask the maintenance personnel to remove the lubrication faults before putting on the top.
4、Preparation before loading workpiece
4.1, before the workpiece on the machine, must check the center hole of the workpiece and the angle of the top to match. The angle of the top and the center hole of the workpiece must be the same.
4.2, the center hole of the workpiece is not allowed to have a high point in the center hole, before the workpiece on the machine tool, the center hole of the workpiece must be ground. The contact area between the top and the center hole of the workpiece must be more than 75%, and it should be ensured that the contact end of the center hole and the top is at the big head end.
4.3, with 'Loctite' 755 cleaning agent will be the center hole of the workpiece spray clean, to prevent the top of the research injury.
5、Movement of tailstock and telescoping of sleeve
5.1, the tail seat before moving, must keep the tail seat where the guide rail surface clean, no dirt in the rack. If the guideway surface is not clean or there is dirt in the rack, the tailstock cannot be moved.
5.2 Before moving the tailstock, keep the oil tank of the tailstock clamping cylinder with sufficient and effective oil.
5.3, often keep the tailstock guide surface lubricating oil tank has enough oil.
5.4, after the sleeve is extended, before retracting, must keep the surface of the extended part of the sleeve clean and oiled.