Grinding wheel with the grinding process, will become dull, so in the course of the use of constant repair, so that the grinding wheel to change the sharp. The following describes how a better dressing wheel so that it maintains a higher grinding efficiency and quality.


        The sharpening process is a sharpening process that grinds the abrasive grains of a superhard abrasive wheel. In this process, the need to remove the abrasive between the binder and abrasive wheel abrasive, grinding with a strong performance of the abrasive wheel prominent bonding agent, the formation of sharp cutting edge. Sharp must also remove small material from the pores of the grinding wheel surface to prevent the grinding force from acting on the grinding wheel from increasing and the grinding force on the grinding wheel to increase, which will cause vibration and surface burn.


Without proper sharpening, even the best wheels can not achieve the high quality and dimensional uniformity of machined parts. In fact, when you invest in high-quality grinding wheel, in order to obtain high grinding performance, it is very good dressing it is very important.


Shaping can be said to be part of the wheel preparation work, it is with the ordinary grinding wheel repair at the same time. For the superhard abrasive wheel, two processes are carried out separately, the first wheel to shape. In the use of superabrasive grinding wheel grinding, shaping is the use of plastic tools or rollers, repair sharp is often the use of a ceramic binder dressing rod, in the shaping is completed, the grinding wheel for sharpening treatment.


It is important to ensure that the spindle bearings are at a certain temperature (such as a normal grinding wheel condition) before the grinding wheel can be trimmed and trimmed. This avoids damage to the part geometry and non-normal wear of the grinding wheel and dressing tool. Care must be taken with dressing tools because they are generally made of hard, abrasion-resistant but brittle diamond material and are very sensitive to minor cracks and crushing due to minor impact, stress.


Because the diamond shaper itself is a tool, need to remain very sharp. The use of a dull finishing tool to dress the wheel surface will make the grinding wheel dull. In order to maintain a high-quality and sharp diamond dressing tool, at regular intervals, the need for 1/8 turn to rotate a single point or with the tip of the trimming tool. The number of rotations can be determined according to the trimming situation, according to experience, at least once a day rotation. For chisel heads and forming dressing tools, they are usually rotated 180 ° before they are dull.


Most cylindrical grinding machines place the part and wheel on a horizontal line. The highest point of the outer circle of the part and the highest point of the outer circle of the grinding wheel are called the parts / grinding wheel contact point. The diamond dressing tool should dress the grinding wheel as close as possible to the part / grinding wheel contact point. It is even more important to dress the grinding wheel for the internal grinding machine with the diamond dressing tool near the highest point of the outer circle of the grinding wheel (ie the part / grinding wheel contact point at the time of grinding).

How to choose the right grinding wheel

Grinding wheel is an important grinding tool, which is composed of a variety of binder composition of a tool.Grinding wheel in the selection of the time, we must master a certain method.
Among them, the abrasive, binder and pore is the wheel of the three basic elements. With the abrasive, binder and grinding wheel manufacturing process and so different, grinding wheel characteristics may vary greatly, the precision of grinding, roughness and production efficiency has an important impact.Therefore, the appropriate conditions must be selected according to the wheel.

Juchuang Abrasive is the first wheel factory is specialized in producing a small wheel of small and medium-sized manufacturers, loved by the majority of customers, the product is well known. The first wheel produces all kinds of suitable wheel, the whole plant has more than 130 kinds of specifications, to meet the vast majority of customer requirements of the wheel, whether it is cutting films, grinding tablets, one hundred impeller are sold.

Grinding wheel: A rounded consolidated abrasive tool with a through hole made of abrasive and binder resin. Grinding wheel is the largest amount of abrasive, the use of the most extensive one, the use of high-speed rotation, the metal or non-metallic parts of the cylindrical, inner circle, plane and a variety of surface rough grinding, semi-fine grinding and Grinding and grooving and cutting and so on. In this case, In this case, Grinding wheel is the most important kind of abrasive grinding. The grinding wheel is a porous body which is prepared by adding binder, grinding, drying and baking. Due to the different abrasives, binders and manufacturing processes, grinding wheel characteristics vary widely, and therefore have a significant impact on the quality of grinding, productivity and economy. The characteristics of the grinding wheel mainly by the abrasive, particle size, binder, hardness, organization, shape and size and other factors. In this case, 1, classification A wide range of grinding wheel. In this case, According to the used abrasive can be divided into ordinary abrasive (corundum and silicon carbide, etc.) and natural abrasive grinding wheel superhard abrasive and (diamond and cubic boron nitride, etc.) wheel; According to the shape can be divided into flat-shaped grinding wheel, bevel wheel, cylindrical grinding wheel, cup-shaped grinding wheel, disc-shaped grinding wheel, etc .; according to binder can be divided into ceramic grinding wheel, resin grinding wheel, rubber grinding wheel, metal grinding wheel. Characteristics of the grinding wheel parameters are abrasive, viscosity, hardness, bonding agent, shape, size and so on. In this case, Since the grinding wheel is normally operated at high speed, it shall be subjected to a rotary test before use (to ensure that the grinding wheel does not rupture at the maximum operating speed) and a static balance test (to prevent machine vibration during operation). The grinding wheel should be trimmed for a period of time to restore grinding performance and correct geometry.

Sdc grinding wheel and the difference between where the CBN wheel? SDC is a metal-coated diamond abrasive wheel to do; CBN is to CBN (cubic boron nitride) as abrasive grinding wheel, are generally used are diamond grinding wheel. SDC grinding wheel is a diamond grinding wheel, and CBN grinding wheel hardness. General abrasive wheel commonly used: A-corundum WA-white corundum C-black carbonized silicon GC green silicon carbide AC mixed abrasive SA-single crystal corundum MA-microcrystalline corundum BA-black corundum ZA-zirconia corundum PA-chrome corundum FA-semi-brittle corundum SG-ceramic Corundum SC-cubic silicon carbide BC-boron carbide D-diamond

According to the structure of the machine and the need for grinding, grinding wheel made of various shapes and sizes. Table 6 is commonly used in several wheel shape, size, code and use. The outer diameter of the grinding wheel should be chosen as much as possible in order to improve the wheel's peripheral speed, so to improve the productivity of grinding and surface roughness favorable. In addition, in the machine stiffness and power permit conditions, such as the choice of a larger width of the wheel, the same can be received to improve productivity and reduce the effect of roughness, but the grinding of high-sensitivity materials, in order to avoid surface burns and Resulting in cracks, grinding wheel width should be appropriately reduced.

The safe operating rules of grinding wheel

The safe operating rules of grinding wheel: 1. Before installing the wheel should check whether the cracks, if the naked eye is not easy to identify, can be used to hold up the wheel of solid lines, and then a wood gently tap, listen to their sound (metal sound is excellent, dumb sound inferior). 2. Grinding wheel machine must have a solid appropriate wheel cover, or shall not be used. 3. Install the wheel, the nut shall not be too loose, too tight, should be checked before using the nut loose. 4. After the wheel is installed, be sure to idle test 2 - 3 minutes to see whether the balance of its operation, protection device is properly reliable, in the test run, should arrange two staff, one wheel side wheel, In case of abnormality, the power supply should be cut off immediately by another person in the power distribution cabinet to prevent the accident. 5. When using the grinder, wear protective glasses. 6. Grinding wheel must be 40 - 60 seconds after the stable speed grinding, grinding tools should stand on the side of the wheel, not on the wheel, to prevent broken pieces of worn out of the wheel. 7. It is strictly forbidden to use one wheel at the same time. 8. Sharpen, the tool should be slightly higher than the center of the wheel.Not too much force to prevent slippage injury hand. 9. Grinder without permission, not to indiscriminate use. 10. Turn off the grinder immediately after use. 11. Grinding wheel should be cleaned cleanly after get off work.

The grinding wheel is made of abrasive and bonding agent with a circular hole in the central consolidated abrasive.

41-A30Q4BF MAX SPEED R.P.M.

41

According to international practice means T41-parallel wheel T42-cymbals-type cutting wheel T27-cymbals-type grinding wheel

A

Abrasive: A-corundum WA-white corundum C-black carbonized silicon GC green silicon carbide
AC mixed abrasive SA-single crystal corundum MA-microcrystalline corundum BA-black corundum ZA-zirconium corundum
PA-chrome corundum FA-semi-brittle corundum SG-ceramic corundum SC-cubic silicon carbide BC-boron carbide D-diamond

30

80, 90, 100, 120, 150, 180, 220 (hereinafter referred to as "fine powder") in the form of fine particles of abrasive grain size: 16, 20, 24, 30, 36, 40, 46, 54, 60, 70,

Q

Hardness of grinding wheel: F, Q, H, J, K, L, M, N, P, Q, R, S, T, Y

4

Organization number: According to the abrasive in the grinding wheel products in the volume ratio points
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12

B

Binder Type

F

Enhanced

MAX SPEED

Maximum permissible linear velocity in meters per second

R.P.M.