Far East TDC, the only enterprise in China's hardware industry that has achieved overseas mergers and acquisitions, is one of the largest manufacturers of twist drills and an industry leader, Dalian Far East Tool Co., Ltd. ..
Tiangong TG was once a famous brand in China, a high-tech enterprise, one of the leading production bases of high-speed steel/cutting tools, a large-scale twist drill manufacturer, and Jiangsu Tiangong Tool Co., Ltd.
Black & Decker Dacker & Decker1910 was founded in the United States, a world-famous tool brand, one of the largest power tool manufacturers in the world, a large multinational company, and Stanley Black & Decker Company of the United States.
Feida Feida is one of the largest producers of high-speed tool steel in the world, and has been awarded as a famous brand in China, a national high-tech enterprise, an international enterprise group and Jiangsu Feida Bit Co., Ltd.
Harbin No.1 Tool Manufacturing Co., Ltd. is one of the largest production bases of precision tools/numerical control tools in China, and a large-scale backbone enterprise of key equipment industry in China.
Shanggong was founded in 1949, and once won a well-known trademark in China, one of the most influential brands in the domestic tool industry, and a famous brand product in Shanghai, Shanghai Tool Factory Co., Ltd.
Bosch Bosch was founded in Germany 1886. Is a world brand, is the world's leading manufacturer of power tools, is an influential brand in the industry. Bosch Electric Tool (China) Co., Ltd.
Linked LINKS was awarded as a famous brand in China, one of the largest manufacturers of precision measuring tools in China, a leader in China tool industry and Harbin Measuring Tools Group Co., Ltd.
Fangda is a leading enterprise in Wang Quanguo drilling (construction) industry base, one of the top ten twist drill brands, a well-known brand in domestic hardware tools industry, and China Fangda Holdings Co., Ltd.
Chuanpai, founded in 1956, was once a famous brand in China, a national key manufacturer of measuring tools, a national high-tech enterprise and Chengdu Liangcheng Tool Group Co., Ltd.
In addition to twist drills, other types of drills:
The cutting part of the flat drill is shovel-shaped, with simple structure and low manufacturing cost. Cutting fluid is easy to enter the hole, but its cutting chip removal performance is poor. The structure of flat drill has two kinds: integral and assembled. Integral drilling is mainly used for drilling micropores with a diameter of 0.03 ~ 0.5 mm, and the assembled flat drill blade can be replaced and internally cooled, and it is mainly used for drilling large holes with a diameter of 25 ~ 500 mm.
Deep hole drill usually refers to a tool for processing holes with the ratio of hole depth to hole diameter greater than 6. Commonly used are gun drill, BTA deep-hole drill, jet drill, DF deep-hole drill and so on. The trepanning drill is also commonly used for deep hole machining.
Reamer has 3 ~ 4 teeth, and its rigidity is better than that of twist drill. It is used to enlarge existing holes and improve machining accuracy and flatness.
Countersunk drill has many cutter teeth, and the hole end is processed into the required shape by forming method, which is used to process countersunk holes of various countersunk screws or flatten the outer end face of the holes.
The center drill is used to drill the center hole of shaft workpiece, which is essentially composed of twist drill and small spiral angle countersunk drill, so it is also called compound center drill. In the middle of the hollow drill pipe is a hollow drill bit, which is mainly used for drilling and coring.