Grinding mankind since ancient times is an ancient technique known adjustable CNC drilling machine manufacturers, Paleolithic, polished stone is used this technique. Later, with the use of metal utensils, and promote the development of grinding technology. But adjustable CNC drilling products designed veritable modern grinding machine or something, even in the early 19th century, it is still a natural by rotating grindstone, make contact with objects grinding process. The first grinder (1864) in 1864, the United States made the world's first adjustable grinder CNC drilling machine, which is in the turret lathe slide plate installed on the wheel, and it has a device for the automatic transmission. After 12 years, the United States, Brown invented the modern grinders near universal grinder. Artificial grindstone - Wheel of birth (1892) artificial grindstone demand will rise. How to develop a more wear-resistant than natural grindstone millstone it? In 1892, Americans Acheson successful trial with coke and sand made of silicon carbide, which is now known as an artificial grindstone C abrasive; two years later, as the main component alumina abrasive A trial again Adjustable multi-axis CNC drilling success, so that they will have a grinder more widely used. Later, due to the bearings, to further improve the rail portion of the increasingly high precision grinding machine, and the development of the professional direction, there has been internal grinder, surface grinder, roll grinders, gear grinders, universal grinders and so on. Evaluate the technical performance of the machine can be attributed to the ultimate indicator of precision and productivity. Comprising a workpiece machining accuracy dimensional accuracy, shape accuracy, positional accuracy, surface quality and accuracy of the machine tool retention. Productivity involves cutting time and auxiliary time, as well as the degree of automation and reliability of the machine. These indicators depend on the one hand, the static characteristics of the machine, such as static geometrical precision and rigidity; on the other hand with the dynamic characteristics of the machine, such as a greater relationship between motion accuracy, dynamic stiffness, heat distortion and noise. Supplementary motor includes adjustment tool or workpiece fast approaching and exiting, machine parts position workpiece indexing turret indexing, send clamp the material, start, speed, change direction, stop, and automatic tool change and other sports. Shandong adjustable CNC drilling, Chen Hua machinery (certified), CNC drilling adjustable by Chen Hua Machinery Co., Ltd. Qingdao. Qingdao Hua Chen Machinery Co., Ltd. (www.qdchenhua.com) is Qingdao, a leader in CNC machine tools over the years, the company implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Chen Hua Machinery leadership in the staff warmly welcome all inquiries negotiations to create a better mechanical Chen Hua future.