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January 16, 2020

How to choose a suitable grinding machine

Drill bit grinding machine is a kind of simple fool type grinding machine, which is used for industrial bit grinding.The bit worn in use can be grinder and repaired to achieve the effect of renovation and reuse. According to the different bit materials, different grinding wheels can be used to meet the repair requirements. How […]

Technology
January 15, 2020

Introduction of Drill Bit Grinder 20G

The drill bit grinder is suitable for grinding bit. This machine is portable, accurate and durable, equipped with diamond grinding wheel made in Taiwan. PG-20G type can be cutter grinding the front cutting edge (front angle) of the drill bit and the size of the apex angle (top angle), retract angle (back angle), the front […]

Technology
March 13, 2019

Several forms of wear by which a drill bit is worn

The drill bit is semi-closed cutting, and the heat of drilling is difficult to spread outward, so it is easier to form a high cutting temperature. Therefore, the main cause of bit wear is thermal wear, for high-speed steel bit, mainly phase change wear. In addition, there are contact fatigue, excessive deformation, edge breaking, brittle […]

Technology
March 6, 2019

Methods of drilling twist drill and points for attention

Drilling methods: Before drilling, the workpiece plane should be leveled. No convex platform is allowed in the center to facilitate the correct centering of the twist drill.  Align the tailstock so that the center of the twist drill is aligned with the axis of rotation of the workpiece. Otherwise, the diameter of the hole may […]

Technology
February 26, 2019

Selection of Cutting Fluid in Drilling

Selection of Cutting Fluid in Drilling   Material for twist drills Material to be drilled low carbon steel medium-carbon steel hardened steel High Speed Steel Twist Drill Use 1%~2% low concentration emulsifier, electrolyte aqueous solution or mineral oil Use 3%~5% medium concentration emulsifier or extreme pressure cutting oil Use extreme pressure cutting oil Cemented carbide […]

Technology
February 20, 2019

How to grind the worn bit by hand?

How to grind the worn bit by hand? First of all, we should observe the wear of the two main cutting edges of the drill. If the degree of wear on both sides is different, the wear on one side is slightly higher than that on the other. More attention should be paid to grinding. […]

Technology
February 12, 2019

Effect of Grinding Quality of Twist Drill on Machining

The grinding quality of twist drill directly affects its drilling quality. So the grinding of twist drill is very important. There are two kinds of grinding conditions for twist drills: 1) correct grinding and 2) incorrect grinding. The impact of these two conditions on workpiece processing is described below. 1. Correct grinding Drilling condition: When […]

Technology
February 1, 2019

How to choose the right geometric Angle of graphite tool?

Choosing the right geometric angle of the graphite tool can help to reduce the vibration of the tool. In turn, the graphite workpiece is not easy to collapse. (1) Land Angle When the negative land angle is used to process graphite, the blade strength is good, the impact resistance and the friction resistance are good. […]

Technology
January 24, 2019

Application of coating technology

In the case of constant cutting parameters, in order to improve production efficiency and reduce production costs, the tool coating technology to reduce tool wear, and in order to improve tool durability has become a trend. Tool coating refers to coating a thin layer of refractory metals or non-metallic compounds with good wear resistance on […]

Technology
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