Difference 1. Different uses
Milling cutters are mainly used for processing planes, steps, grooves, forming surfaces and cutting workpieces on milling machines;
Drill bits It is one of the important tools for oil drilling and is generally used for drilling.
Difference 2. Different categories
Milling cutters are divided into sharp tooth milling cutters and shovel tooth milling cutters; drill bits are divided into diamond drill bits, cone drill bits and scraper drill bits.
A milling cutter is a rotating tool with one or more teeth used for milling. During operation, each cutter tooth intermittently cuts off the remainder of the workpiece.
During the drilling process, the drill bit is the main tool for breaking rocks, and the wellbore is formed by the drill bit breaking the rock. The quality of a wellbore and the length of time it takes to form it are not only related to the characteristics of the rock being drilled and the performance of the drill bit itself, but also to the degree of mutual matching between the drill bit and the formation.
Extended information:
Drill bit development history:
From 1969 to 1975, Zhengzhou No. 3 Grinding Institute produced several JR20SN-2 polycrystals of different diameters. It was first used in the manufacture of diameter-preserving impregnated drill bits and reamers to drill into strata below grade 7 in mines;
Before my country’s independently developed PDC was successful in the early 1980s, 6× 6mm polycrystalline has been widely used in core drill bits for oil and natural gas drilling and watermelon peel-type comprehensive drilling drill bits;
From the late 1980s to the present, the PDC manufacturer has made a series of improvements to PDC and innovation, the various performances of PDC have been greatly improved. As the energy market boom and crude oil prices continue to hit new highs, major drill bit companies have actively developed a series of new PDC drill bits together with oil companies, improving the performance of PDC drill bits. The use effect has expanded the use field;
Since the 1990s, from the perspective of drill bit hydraulics, the drilling mud has been successfully controlled to control the drill bit mud bag phenomenon in shale, which has solved the problem of drilling into shale interlayers. A breakthrough has been made on existing problems.
Baidu Encyclopedia - Milling Cutter
Baidu Encyclopedia - Drill Bit