Horizontal numerical control machining method of plane beam-type parts
A processing method and parts technology, applied in the field of CNC machining of aircraft beam parts, can solve problems such as interrupted processing, restricted parts processing range, waste of resources, etc.
Active Publication Date: 2011-04-06
XIAN AIRCRAFT IND GROUP
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Problems solved by technology
But there is such a problem at present, the chip removal of vertical machine tool processing is often not as convenient as horizontal processing, not only difficult to clean, but also easy to cause secondary cutting of aluminum chips, affecting the quality of the processed surface; Machine tool processing also greatly restricts the processing range of such parts, and the advantages of horizontal CNC machine tools are also difficult to play, resulting in a waste of resources
[0003] However, there are some problems that need to be solved when using horizontal CNC machine tools to process large and complex structural parts such as aircraft beam parts.
First of all, the machine tool workbench in horizontal machining is perpendicular to the ground, and the workpiece must be suspended on the workbench. Therefore, it is necessary to overcome the influence of the gravity of the part itself on the clamping stability of the part during processing, and ensure the coordination of dimensions; The weight of the clamping system requires the clamping system to be as light and simple as possible; at the same time, horizontal CNC machine tools are often closed automatic processing, which requires higher safety of the clamping system, and cannot interrupt processing or switch clamping during the processing
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[0020] This embodiment describes a method for horizontal continuous numerical control machining of an aircraft beam part by using a horizontal machining center, and the necessary clamping fixtures for realizing this method. The method proceeds as follows:
[0021] First, the preparation of wool 2 before horizontal processing. The wool should be prepared in advance with a reference plane 5, a lateral reference edge 4, an end face reference edge 1, and several stepped holes 3. The step hole satisfies just being able to put the hexagon socket bolt 10 for fixing the workpiece into and has an appropriate gap, and the length of the small hole part of the step hole is as small as possible. see figure 1 , figure 2 .
[0022] Second, the preparation of the vacuum fixture 7 for horizontal processing. The vacuum fixture should meet the following requirements: a positioning reference plane 23; an end face positioning block 9 on the reference plane, and several side positioning block...
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The invention discloses a horizontal numerical control machining method of plane beam-type parts and a clamping clamp necessary for realizing the method. Under an one-time clamping condition, the method effectively realizes the rough machining and the fine machining of a beam part of a plane beam-type part under horizontal numerical control machining, ensures the coordination of machining size, and avoids interrupting to machine and switch clamping during the horizontal closed-type numerical control machining.
Description
technical field [0001] The invention relates to the technical field of numerical control machining, in particular to a numerical control machining method for aircraft beam parts. Background technique [0002] Aircraft girder parts are a typical part structure in the aircraft structure and one of the main structural parts that constitute the aircraft structure. Beam parts are generally slender structures with multiple grooves on one side, with edge plates with curved shapes on both sides, and reinforcing vertical ribs in the grooves. Beam parts are generally processed by CNC machining of aluminum alloy pre-stretched plates. The current processing methods generally use vertical five-coordinate CNC milling machines or machining centers for processing, which is determined by their structural characteristics and process complexity. But there is such a problem at present, the chip removal of vertical machine tool processing is often not as convenient as horizontal processing, not...
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IPC IPC(8): B23P15/00
Inventor 田辉梁恩让王俊斌赵丽君惠昕周鹏
Owner XIAN AIRCRAFT IND GROUP