1、 Classification of commonly used grinding wheels:
1) M: Bronze wheel (Metel), main cutting;
2) R: Resindiamond, Zhuhai Jinyang, Italy Belmore, DIA, ADI, Vincent, WINTER, etc;
3) P: Polishing wheels: 10S40, BK46, BK60, BK80, BK120, AO60 from Italian RBM or German ARTIFEX;
4) P-c: X5000, X3000, X081, CE-3 with polishing powder wheels (Polishing with CeO2) from Italian RBM or German ARTIFEX;
5) F: Felt wheel;
6) E: Flat edge of a straight line;
7) B: Bevel of a straight line;
8) S: Flatseams;
9) Pe: Peripheral of a straight line.
10) BD peripheral polishing mud wheel;
2：Key specifications and dimensions of commonly used cup wheels and bowl wheel grinding wheels,as well as benchmarks for concentricity and flatness positioning:
Mainly to eliminate radial and end face runout(how to test the radial and end face runout of the grinding wheel of the beveled edge machine);
3、The relationship between the grinding wheel or drill bit and the rotational speed of the grinding head spindle:
①The larger the diameter of the grinding wheel ring,the faster the linear speed of the grinding head when the spindle speed is the same.If necessary,the speed of the grinding head must be adjusted according to the diameter of the tool(such as FLZ25 vertical drill and various drilling machines),
②Alternatively,different types of motors can be used in conjunction with grinding wheel tools(for example,the X5000 polishing grinding wheel operates at 2840RPM for the second level motor at 380V50HZ and 1420RPM for the fourth level motor,but in Korea and the United States,it operates at 3400RPM for the second level motor at 380V60HZ and 1700RPM for the fourth level motor at 380V60HZ).(Pay attention to whether the polishing and safety chamfering head speeds of the company's bilateral grinding meet the requirements;);
4、A grinding wheel is used to cold process glass.The larger the number or mesh of the grinding wheel,the finer the particle size of the abrasive inside the grinding wheel,and the weaker the grinding force
For example,the grinding wheel configuration and grinding amount allocation of FXM371 and FZM9325:
5、The turning requirements of the grinding wheel and the requirements for the position of the cooling water spray pipe and the direction of the fastening screw teeth due to different turning directions of the grinding wheel
①The relationship between the rotation direction of the grinding wheel and the forward direction of the glass(usually opposite to the biting relationship),but in the use of machinery,opposite requirements are sometimes placed on the steering to prevent water splashing and leakage;
②The position of the water spray nozzle(when there are two water pipes,one is aligned with the center of the grinding wheel,and the other is in the direction of rotation of the grinding wheel)
③When the grinding wheel is reversed,the right tooth screw must be specially tightened(polishing the first wool wheel of FXM351),or a reverse tooth screw(YM7 linear circular edge machine)can be used
1、The diamond grinding wheel sintered with metal alloy is commonly known as diamond wheel:the diamond containing part of the diamond wheel is called the working layer,and the working layer is mostly circular,so it is also called the working ring.The height of the working ring is called the working height,and the width of the working ring is called the ring width.The outer part of the ring width located on the outer diameter of the grinding wheel is called the outer ring,and the inner part is called the inner ring;The diameter of diamond particles is commonly referred to as particle size or mesh size.The circular edge of the working ring can come into contact with the glass twice.The working ring that comes into contact first is the front ring,and the part that comes into contact later is called the back ring.The width of the glass after cutting and grinding is commonly known as the machining allowance.
2、Selection skills and debugging of grinding wheels
1.When replacing the grinding wheel,the original factory specifications should be selected,such as the 150 diameter grinding wheel cannot be interchanged with the 175 diameter grinding wheel
2.When choosing high-performance grinding wheels,the performance of grades 1,2,and 3 should be consistent,as the combination of high and low grades may have a bottleneck effect.
3.The particle size connection of the grinding wheel should be reasonable,and in principle,the overall efficiency should be ensured.The subsequent stage should be able to correct the edge chipping and grinding marks of the previous stage,continuously approaching the brightness.
4.When adjusting,it is not necessary to rely solely on experience such as ammeter swing or noise level.It is necessary to frequently exit the glass and check for scratches.The margin ratio for numbers 1,2,and 3 should be close to 7.5:2:0.52.The grinding amount for number 2 should be controlled within 1mm.
5.The grinding wheel should adopt the working mode of front and rear rings(i.e.the swing angle of the grinding wheel)as much as possible.The processing ratio of the front and rear rings should be close to 8:2,and the grinding amount of the rear ring should not be too large.It should cover the grinding marks of the front ring evenly and delicately.The direction of the front and rear rings of the grinding wheel is opposite,and the end face shape and angle should be maintained at the factory when the grinding wheel is consumed.
