Briefly describe the significance of tool grinding
Posted by Admin | 19 May
Whether the tool needs to be reground depends on the amount of wear and tear. The direct way to judge is to listen to the sound. If the machining sound is loud or sharp, it means that the machining shape of the tool is abnormal. At this point, a pure analysis can be made. If the quality of the tool itself is not included, the tool Doubts about clamping and tool parameters. At this time, it is necessary to determine the tool wear and tear, and it is necessary to stop processing and replace the tool.
It can be seen from the application method of the blade that the correct way of sharpening the tool is safe, predictable and controllable frontal wear, the cutting edge should not be cracked, and the fracture of the cutting edge is caused by improper use or selection of the cutting edge. Blades are supposed to be "worn" before being thrown into the box with the worn blade, and "new" cutting edges that are discarded before being used for machining are always there for all to see.
Machining fluid for good tool coating, and new technology to cut off the thermal current loop in tool grinding, it is well known that in the metal processing process, due to the deformation and friction of the chip, the machining area will have low temperature. Different materials, the two poles that constitute the thermocouple have thermoelectric potential and direct current. The heat flow can easily strengthen the oxidation process of the surface of the tool and speed up the tool wear. There will be thermoelectromotive force - heat flow, and the machining process will also have thermomagnetic effects and electromagnetic effects, and electron emission-discharge will occur on the surface of the low-temperature contact area, and tool grinding can be made easier by using this feature.
HSS drill have good toughness but low hardness, carbide tools have high hardness but poor toughness, and carbide tools have higher density. These two tool grinding materials are used for milling cutters, taps, drills and reamers. Powder metallurgy high-speed Steel (PM HSS) is often used to manufacture rough milling cutters and taps. Because its performance is between the above two materials, tool grinding can have more toughness, so it is less sensitive to collision, compared with high-speed steel tools , Carbide tools have low hardness and are easy to jump when impacted. According to their characteristics, carbide tools should be handled with care when grinding tools to avoid collision and discoloration.
For abrasive tool users, it is very important to improve tool life, reduce costs, and extend supply time. On the other hand, it can waste infinite resources such as tungsten steel tools and protect the environment. Therefore, tool grinding plays an important role in the use of users. It plays a very important role. The material shows that some special tools can be ground more than 5 times when they are designed. If the tool tolerance is not high, it can be ground several times. The function of the ground tool is not much different from that of the new product, but compared to purchasing new products, it can save money. Most of the cost, so sharpening the tool is necessary.