Drill bit is a necessary tool for drilling on reinforced concrete, granite, marble, artificial stone and other stones. His application is widespread and common. For example, in the process of drilling, thedrill bitThe drill bit is the main tool for breaking rocks, and the borehole is formed by the rock broken by the drill bit. The quality of the borehole formation and the time taken are not only related to the characteristics of the rock in the drilled formation and the performance of the bit itself, but also related to the compatibility between the bit and the formation. The proper selection of the bit is crucial in improving drilling speed and reducing overall drilling costs. To choose a suitable bit, it is necessary to first understand the bit. This article focuses on five common types of bits.

The following is a list of contents:

Fried dough twist drillA twist drill is a tool used to drill round holes in a workpiece by rotating and cutting with a fixed axis. The most commonly used tool for hole machining, the twist drill typically has a diameter ranging from 0.25 to 80 mm. It consists of a working part and a handle, with a shape resembling a twist. The spiral grooves on the drill bit can have 2 or more grooves, with 2 grooves being the most common. Twist drills can be used in manual and electric handheld drilling tools, drilling machines, milling machines, lathes, and machining centers. The drill bit material is usually high-speed tool steel or cemented carbide.

The cutting part of the flat drill is shovel-shaped, with a simple structure and low manufacturing cost. The cutting fluid can be easily introduced into the hole, but the cutting and chip removal performance is poor. The structure of the flat drill can be divided into integral type and assembled type. The integral type is mainly used for drilling micro-holes with a diameter of 0.03 to 0.5mm. The assembled flat drill blade can be replaced and internally cooled. It is mainly used for drilling large holes with a diameter of 25 to 500mm.

Deep hole drill usually refers to the tool for machining holes with the ratio of hole depth to hole diameter greater than 6. It can be divided into external chip removal and internal chip removal. The biggest disadvantage of deep drilling and heat dissipation is the difficulty of drilling. Commonly used are gun drill, BTA Deep hole drill, jet drill, DF deep hole drill, etc. Nesting drills are also commonly used in deep hole machining.

Reaming drill is generally used for semi-finishing or final machining of holes, pre-machining before reaming or grinding or expansion of blank holes. It has 3 to 4 edge bands, no transverse edges, small changes of front and rear corners along the cutting edge, good guiding effect during machining, small axial resistance and better cutting conditions than drilling. Its rigidity is better than that of fried dough twist drill, and it is used to expand the existing hole and improve the machining accuracy and finish.

Hollow bit is also known as coring bit, hole opener, central bit, steel plate bit.magnetic drill bitThe middle of the drill pipe is a hollow drill bit, which is mainly used for drilling and coring. Hollow bit is a highly effective drill with multi-edge ring cutting. The diameter of drill hole is from 12mm to 150mm, mainly used for drilling steel parts, such as steel structure engineering, rail transit, bridge, ship, mechanical manufacturing, aerospace and other hole processing fields. Its drilling performance is obviously better than the traditional two-edged fried dough twist drill, and has the characteristics of high drilling efficiency, quick and quick drilling. The multi edge steel plate drill and the magnetic base drill can drill large workpieces in multiple directions. The operation is convenient and flexible, and can effectively shorten the construction time. It has become the preferred tool for drilling and annular groove processing of modern steel components.

Up to now, Zhejiang Hengyue Machinery Co., Ltd. has gone through 12 years of R & D and production experience in the field of drilling rig and spiral bit industry.

Since 2012, a professional R & D team has been established from basic assembly and market practice, which can design new products according to customers' ideas. We mainly supply soil drill, manual soil drill, ice drill, ice fishing drill, artisan Mini cultivator, manual coring machine, ground drill, etc.