Diamond grinding wheel is the hardest wheel, it has "all-conquering" ability, grinding ability is very tough, but the use of diamond wheels still have to pay attention to some matters. To extend the service life of diamond wheels.
1. Diamond grinding wheel is a valuable tool, only used in processing high hardness materials, and should not be used to grind general steel or other soft materials.
2. Diamond wheel fitted with a flange, but also after processed static balance before use. It should be noted that do not remove from the flange until the diamond wheel is used up.
3. The machines of use diamond grinding wheel, the rigidity is better, the spindle selection accuracy is higher (radial runout is not greater than 0.01 mm), and can make a trace of horizontal feed.
4. The appropriate grinding amount must be selected. The following data for reference:
(1) wheel speed:
Metal bonder: ① 10 ~ 15 * / sec (dry grinding), ② 20 ~ 35 * / sec (wet grinding)
Resin binder: ① 15 ~ 30 * / sec (dry grinding), ② 25 ~ 40 * / sec (wet grinding)
(2) workpiece line speed: generally 10 ~ 15 * / min.
(3) grinding depth: grinding depth to be small, otherwise the wheel wear quickly, and grinding efficiency is not necessarily high. Generally 0.005 to 0.01mm / oxygen stroke is appropriate.
Abrasive grain size is finer, the grinding depth should be smaller, especially when no coolant is used.
(4) vertical feed rate: generally 10 to 15 m / min.
5. Grinding should be used as much as possible coolant, which not only improve the grinding efficiency and grinding quality, and grinding wheel wear is also smaller. Commonly used coolant kerosene, light diesel oil, light oil lamp, generally kerosene as well.
6. When the new diamond grinding wheel is in use, it is also necessary to trim it in order to obtain the correct shape (outer roundness, flat face flatness). The dressing method can be made of silicon carbide grinding wheel or silicon carbide abrasive Metal plate or glass plate with handmade grinding (for dressing the wheel end). In order to save expensive diamond grinding wheel, can also be used natural finishing method, that is, the new grinding wheel for the first rough grinding, until it is worn to have a securities shape, and then used to fine grinding. In the grinding process if the grinding wheel is not sharp enough or there is a clogging phenomenon, you can also hand-held silicon carbide wheel wheel carefully on the grinding wheel surface slightly renovated.
Also notice the following questions:
First, the positive operation of the problem
In daily use, many operators are always used to operate in the front, because this direction can be used on the strength, in fact, this behavior for using the grinding wheel should be particularly prohibited. According to the operating procedures, the use of grinding machine, the operator should stand on the side of the wheel, not in the grinding wheel on the front of the operation, so as not to the wheel breakdown, the wheel flying out or grinding wheel broken out of injury.
Second, the side grinding problem
In the daily use of the grinding machine, we can often find some operators regardless of the types of grinding machine and grinding wheel, casually on the use of grinding wheel side of the grinding, which is a serious violation of safe operation procedures illegal operation behavior. According to the rules with the surface of the grinding wheel should not use the side of the grinding, the grinding wheel radial strength, axial strength is very small, the operator give too large force will cause grinding wheel broken, and even wounding, in practice The use of the process should prohibit such actions.
Third, the common operation of the problem
In the actual daily operation, there are such a situation, some people for the production task, grab the work time, the two share a grinding machine at the same time operation, which is a serious illegal operation, should be strictly prohibited. A grinding wheel is not enough time, you can add a grinding machine, absolutely not allowed to share a grinder at the same time.
Fourth, the operation of the strength problem
In the use of the grinding wheel, some operators, especially young operators, in order to grind the speed of fast, give too much forc, this is a very unsafe operation. Any grinding wheel of the body has a certain strength, this is likely to cause the grinding wheel broken, or even fly out of the wounding, which also a prohibited behavior.