The turning-milling composite CNC machine tool refers to a machine tool that can perform both turning and milling, and it can be used as both a lathe and a milling machine. The turning-milling compound machine was first used to process propellers, mainly to avoid the loss of precision and reference loss caused by the second clamping!
The CNC turning and milling compound machine tool is a main model of the compound processing machine tool. In addition to the functions of the CNC lathe, it can also complete plane milling, drilling, tapping, straight groove, spiral groove and tooth milling, etc. It has turning, milling and Composite functions such as boring can realize the processing concept of one-time clamping and complete completion. It is one of the most rapidly developing processing methods in recent years.
Generally speaking, turning and milling compound machine tools need to have the following two characteristics:
1. The spindle motor adopts a servo motor, and the rotation movement and feed movement of the spindle can be linked.
2. In addition to the turret tool post of the CNC lathe, at least a power tool or an independent power tool post should be configured.
Compared with separate CNC lathes and milling machines, the turning-milling compound has the following advantages:
Shorten product manufacturing process chain and improve efficiency
The CNC turning-milling compound center can be equipped with a variety of special tools, new tool arrangements, reduce tool change time, improve processing efficiency, can complete all or most of the processing procedures in one clamping, thereby greatly shortening the product manufacturing process chain. In this way, on the one hand, the production assistance time caused by the change of the installation card is reduced, and the manufacturing cycle and waiting time of the tooling fixture are also reduced, which can significantly improve the production efficiency.
Reduce the number of clamping and improve processing accuracy
The reduction in the number of card loading avoids the accumulation of errors due to the conversion of positioning benchmarks. At the same time, most of the current turning-milling composite processing equipment has the function of online detection, which can realize the in-position detection and precision control of key data in the manufacturing process, thereby improving the processing accuracy of the product; the high-strength integrated bed design improves the difficulty Gravity machining ability to cut materials
During turning and milling, the tool performs intermittent cutting, which can obtain relatively short cuts for workpieces formed of any material, and is easy to automatically remove chips. In addition, the intermittent chips can allow the tool to have sufficient time to cool down, reduce the thermal deformation of the workpiece, and can also increase the service life of the tool. Compared with traditional CNC machine tools, turning and milling has a higher speed, a better quality of cut products, reduced cutting force, improved precision of thin-walled rods and slender rods, and high quality of workpiece forming.
Since the cutting speed can be decomposed into the rotation speed of the workpiece and the rotation speed of the tool, according to the mechanical characteristics, the same processing effect can be achieved by increasing the rotation speed of the tool and reducing the rotation speed of the workpiece. This feature is particularly for the processing of large forgings. Effective, because the reduction in the speed of the forging blank can eliminate the vibration or the periodic change of the radial cutting force caused by the eccentricity of the workpiece, thereby ensuring the smooth cutting of the workpiece and reducing the error in the processing of the workpiece.
When the turning-milling compound machine tool is processing the workpiece, the low rotation speed of the workpiece can effectively reduce the centrifugal force of the workpiece, avoid the deformation of the workpiece, and help improve the machining accuracy of the part. Large longitudinal feeds can also be used in turning and milling to obtain precise cutting, and the surface roughness can also be effectively guaranteed. The turning and milling compound machine tool can use turning, milling, drilling, boring, and other different methods to realize the processing of workpieces. It can complete multi-face machining tasks with one clamping and ensure machining accuracy.
Reduce floor space and save production costs
The compact and beautiful appearance design improves the use of space and makes maintenance and repair more convenient to maximize customer satisfaction; although the single unit of turning and milling processing equipment is relatively expensive, due to the shortening of the manufacturing process chain and the reduction of equipment required for the product, And the reduction in the number of fixtures, workshop area, and equipment maintenance costs can effectively reduce the overall fixed-asset investment, production operation, and management costs.