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Automatic lathe processing classification and features There are many kinds of automatic lathe processing; from the major categories, there are special automatic lathe processing, there are general automatic lathe processing; from the processed varieties on the points, there are processing shell type automatic lathe processing CNC milling machine, processing Heart, automatic lathes with machining axes, turning hearts, CNC grinding machines for cams, etc.; points of control from the requirements of automatic lathe processing, single-axis numerical control CNC belt polishing machine, five linkage CNC cutting machine, CNC hob Grinding; From the complexity of the control points, there are simple numerical control, there are multi-channel numerical control; From the drive mode, there are stepping motors, there is a DC servo motor, AC synchronous servo motor, AC asynchronous servo motor, a linear motor From the spindle drive mode, there is a DC spindle motor, an AC spindle motor, and an AC spindle. From the position feedback mode, there are full closed loop feedback, semi-closed loop feedback, and open loop control.
The good flexibility, high adjustment, and high machining accuracy of automatic lathe processing have long been a concern for automakers. In the 1960s, they began to enter the auto parts manufacturing sector. Due to its high cost, system functions and efficiency are not ideal, and it has not been widely used. Entering the 1990s, along with the intensification of market competition; multi-variety production to meet the diversified needs of the market to the maximum, until to meet the needs of each automatic lathe processing users, become the goal pursued by the automotive manufacturers, with CNC machine tools, mainly flexible manufacturing units, are used extensively. There are two key development directions of today's CNC machine tools: high-speed automatic lathe machining, and high speed to achieve high efficiency. The current international level is the spindle speed ≤ 25000rpm, acceleration and deceleration ≤ 2.5g, rapid movement ≤ 160m/min, to achieve this new level, CNC machine tools drive, mechanical transmission, mechanical structure, tools must have a great Improve. The main shaft of the machine tool must use an electric spindle. The main bearing is generally a ceramic bearing. The difficulty is cooling and lubrication. The service life is generally 20,000 hours. Drives typically use linear motors plus linear guides (also used for hydrostatic guides), and 90m/min, 1g machines are also driven by dual servo motors with large pitch double ball screw pretensioning schemes. The mechanical structure generally uses a frame box structure. The cutters are made of high hardness, high heat-resistant tools, and HSK handles are used for the tool holders.
The special machine for automatic lathe machining or the numerical control of special machine tools solves the contradiction between flexibility and high efficiency. At present, European and American automobile production mostly uses an agile production system composed of high-speed processing cores. Such a system can be manufactured with 100% flexible mixed flow and multiple varieties, and is composed of a plurality of flexible processing units called islands. Each island is composed of multiple similar ones. A machine tool and a manipulator that connects the machine tools, and exchanges information with the machine tool on pallets with electronic storage. It is worth noting that these equipment suppliers not only mastered the proprietary technology of equipment manufacturing, but also attached great importance to the development of automotive manufacturing process. They can provide users with turnkey projects and have their own system development capabilities. The reliability index of the machine tool is extremely advanced, with a single machine operating rate of more than 98%. With this production system, the period of industrialization of the new products of automobile manufacturing manufacturers is greatly shortened.
After more than two decades of reform and opening up, the use of automatic lathe processing has become increasingly popular in the auto parts manufacturing sector in the country.
Industrial 4.0 automatic lathes are widely used in the automotive industry
Auto manufacturing manufacturers adopt advanced advanced product development methods, virtual manufacturing, synchronous engineering and other advanced development technologies. It is very important to benefit from the efforts of equipment suppliers who provide manufacturing equipment for automobile manufacturing, especially these equipments. Suppliers offer a variety of automatic lathes that allow automotive manufacturers to provide products that meet market demands at the fastest speed. With the production of the 4.0 automotive industry, the development cycle of new products has been shortened and the cost has been continuously reduced. According to statistics, a four-year development cycle of automotive products was needed ten years ago; today, it takes only two years to complete.