A fixture for processing eccentric drill bushings and a processing method for eccentric drill bushings
A processing method, the technology of eccentric drilling, is applied in the direction of manufacturing tools, metal processing equipment, and machine tools designed for grinding the rotating surface of workpieces. Effect
Active Publication Date: 2019-11-08
CHINA HANGFA GUIZHOU LIYANG AVIATION POWER CO LTD
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Problems solved by technology
At present, the processing of this kind of eccentric drill sleeve parts is mostly processed by slow wire-feeding or high-precision CNC coordinate grinding. Although this type of processing can meet the requirements, the processing cost is too high, which is not conducive to the processing of small batch parts.
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[0020] The fixture and the processing method of the eccentric drill bushing according to the present invention will be described in detail below in conjunction with the accompanying drawings.
[0021] Such as figure 1 with figure 2 As shown, it is a structural schematic diagram of the eccentric drill sleeve part 2 to be processed involved in the present invention, and the eccentric value of the eccentric hole 5 is H.
[0022] Such as Figure 3-5 As shown, first design the fixture: design a special series of eccentric fixtures according to the clamping and positioning methods of the processing machine tool and the structural characteristics of the workpiece, such as image 3 shown. Then, according to the structure of the fixture parts and the machining accuracy of the machine tool, the dimensional tolerance of each part of the fixture is reasonably allocated. According to the fixture process structure, formulate the best process route, reduce machining errors, improve fixt...
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The invention discloses a clamp used for eccentric drill bushing processing and a processing method for the eccentric drill brushing. A circular step through hole is formed in the upper end surface ofa cylindrical clamp body (1); the circular step through hole comprises a first circular hole and a second circular hole with the outer diameter smaller than that of the first circular hole; the axisof the circular step through hole is parallel to that of the cylindrical clamp body (1); and a vertical interval between the two axes is H. A to-be-processed eccentric drill brushing part (2) is accurately clamped on a special tool while the clamp is guaranteed to be accurately clamped on an internal grinding machine; and a proper grinding tool and proper parameters are selected for grinding parts. The clamp can realize small-batch processing, on common grinding equipment, of eccentric drill brushing parts, improves processing efficiency, and reduces processing cost of the parts.
Description
technical field [0001] The invention belongs to the field of mechanical processing, and relates to a specific processing and manufacturing method for an eccentric drill sleeve clamp in a fixture of a tooling drilling machine. Background technique [0002] The eccentric drill sleeve in the tooling fixture is the key part of the fixture in the machining of aviation parts. The quality directly affects the dimensional accuracy and position accuracy of the holes of the aeroengine parts. At present, the processing of such eccentric drill sleeve parts is mostly processed by slow wire-feeding or high-precision CNC coordinate grinding. Although this type of processing can meet the requirements, the processing cost is too high, which is not conducive to the processing of small batches of parts. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a fixture for processing eccentric drill bushings and a processing method for ecce...
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IPC IPC(8): B24B5/48B24B41/06
CPCB24B5/48B24B41/06
Inventor 王意豪韩前宏邹朝亮周琦浩
Owner CHINA HANGFA GUIZHOU LIYANG AVIATION POWER CO LTD