The CNC machining center is developed from the basic CNC milling machine. It integrates all the functions and characteristics of the CNC milling machine. It has the same structure and similar processing technology. Not only that, the machining center also integrates the processing functions and processing procedures of a variety of machine tools. It can complete multi-process processing for workpiece clamping at one time, such as milling, boring, drilling, tapping and threading and other multi-process processing. So what categories can CNC machining centers be divided into?
- Turning center
The turning center is based on the CNC lathe, equipped with a tool magazine and a manipulator, so that the number of tools that can be used is greatly increased. The turning center mainly focuses on turning, and can also perform milling, drilling, expanding, reaming, tapping and other processing. The main processing objects are: the conical surface of complex parts and the revolving body with complex curves as generatrix. On the turning center, it can also perform machining such as drilling radial holes, milling keyways, milling cam grooves and spiral grooves, tapered threads and variable pitch threads. Turning centers generally also have the following two advanced functions.
1) Power tool function: that is, some or all tool positions on the tool holder can use rotary tools (such as milling cutters, drills) to rotate these tools through the power in the tool holder.
2) C-axis position control function: can realize arbitrary position control of the spindle circumferential direction. Realize X-C, Z-C linkage. In addition, some turning centers also have a Y-axis function. - Five-sided machining center
In addition to the functions of a general CNC machining center, the five-sided machining center has a spindle head that can be converted from vertical to horizontal. One-time clamping of similar parts) to process five sides. This type of machining center can not only greatly reduce the auxiliary time of processing, but also reduce the impact of positioning errors on the accuracy of parts due to multiple clamping. - Boring and milling machining center
Boring and milling machining centers are the first to develop and are currently the most widely used machining centers, so what people usually call machining centers generally refers to boring and milling machining centers. Each feed axis can realize stepless speed change, and can realize multi-axis linkage control, the main shaft can also realize stepless speed change, can realize automatic clamping and loosening of tools (tool loading and unloading), with automatic chip removal and Automatic tool changer. Its main process capability is mainly boring and milling, and it can also perform processing such as drilling, expanding, reaming, countersinking, and tapping. The main processing objects are: plane parts with a fixed angle (constant) between the processing surface and the horizontal plane, such as discs, sleeves, and plate parts; variable-bevel parts with a continuously changing angle between the processing surface and the horizontal plane; Box-type parts; complex curved surfaces (cams, integral impellers, molds, spherical surfaces, etc.); irregular shapes of special-shaped parts, most of which require multi-station mixed processing of points, lines and surfaces). - Turning and milling compound processing equipment
As the name implies, turning-milling processing equipment refers to processing equipment that has both turning and milling functions. In this sense, the above-mentioned turning center also belongs to this type of processing equipment. But what is said here generally refers to large and heavy-duty turning and milling composite processing equipment, in which turning and milling functions are equally powerful, which can realize multi-surface machining of some large and complex parts (such as integral propellers for large ships) at one time. The machining accuracy of the part’s profile and the mutual positional accuracy of each machining surface (such as the mutual positional accuracy of the propeller blade profile, positioning hole, installation positioning surface, etc.) are guaranteed by the accuracy of the equipment. Due to the high technical content of this type of equipment, not only the price is high, but also due to its obvious military application background, it is listed as a national strategic substance by western developed countries, and usually restricts and blocks my country.
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