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The structural characteristics of five axis linkage machining machine tools

2023-07-04(83)

In the five axis linkage machining machi...
In the five axis linkage machining machine tool, there are not only X/Y and Z parallel line motion plane coordinates, but also 2 rotational vertical coordinates to complete the rotational tool walking motion. The operating table and main shaft head also have this multi axis linkage system to complete the continuous tool walking motion and achieve the goal of surface machining work.
1、 Analysis of the operation mode of rotating in accordance with the operation platform type and shaking
The operation mode of the rotary composite operating table type+shaking five axis linkage machining machine tool can generally be divided into two rotating vertical coordinates, which can be applied to the product workpiece. According to the shaking of the AB axis of the bed body, the rotation behavior is carried out along the C axis, all of which require the action of the operating table. The development trend of configuring CNC machine tools with shaking and rotating workbenches has emerged, based on the operation of the original three types of CNC machining machines.
The operating table type can generally be divided into two supports, left and right. The actual stiffness is relatively high. If the cabinet countertop is turned to the back, its controllable movement indoor space is relatively small. Therefore, its swing angle is generally larger than that of a clock, and its specific swing angle range is relatively large. At the same time, it is easy to observe and more suitable for the production and processing of small and medium-sized parts. The operating table should run according to the (ABC) axis composition to complete the work task. Not only can it promote the assembly of the bottom edge in the operating table, but the other five surfaces should rely on spindle bearings for technical production and processing, and can also be made into inclined holes or inclined surfaces. The ABC axis composition movement completes the work by assembling the bottom edge on the stage. The other five surfaces are produced and processed by spindle bearings. The ABC axis can be connected to the XYZ three linear axes, and then complex spatial surfaces are produced and processed, such as the inclined surface of a large fan impeller.
These types of equipment are generally built on the premise of operating a three-axis CNC lathe, equipped with a rotating worktable and CNC machine shaking. The structure of the spindle is generally simple, with good actual stiffness, and involves a wide range of processing technology categories, which is relatively simple to use. At this stage of operating platform design, it is necessary to clarify the actual load-bearing capacity. This process measure is a structural feature of high utilization rate of large, medium, and small five axis CNC lathes.
2、 Analysis of the operation mode of rotating composite spindle head and shaking
The operation mode of the five axis linkage machining machine tool with a rotating composite spindle head and shaking can be described as a process of rotating the vertical axis. At the same time, this will act on the CNC blade and be completed by the composite spindle head on one side of the CNC blade. After analyzing the basic elements, it is found that the composite spindle head is composed of a rotatable spindle head and a rotary head. The rotatable spindle head can complete 360 ° rotation around the Z-axis, while the rotary head can complete rotation around the XY axis. This type of CNC lathe can also be divided into many series of products.
Composite spindle head type CNC lathes and above can use ball end mills for complex oblique machining, and can also use spindle bearings to bend products. After turning one angle, the ball end mills can drill and avoid the zero line speed endpoint, which can better meet the actual needs of precision surface machining and meet the requirements of production and processing quality.


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