Finish machining method of the frame of the rotating table
A frame and turntable technology, applied in metal processing equipment, metal processing machinery parts, manufacturing tools, etc., can solve the problems of inability to meet high-precision frame processing requirements, reduce frame processing accuracy, and long production cycle, so as to improve processing accuracy and consistency, convenient and intuitive operation, and the effect of improving yield
Active Publication Date: 2009-07-08
BEIJING INST OF AEROSPACE CONTROL DEVICES
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Problems solved by technology
This method can reduce the cost of frame processing and ensure the technological requirements and processing monitoring requirements of frame processing. However, in the process of frame processing, measuring tools must be calibrated in each process to ensure the accuracy of processing benchmarks, resulting in long frame processing production cycles and cumbersome operations. , at the same time, due to the accumulation of various errors during the calibration process, the machining accuracy of the frame is reduced
This method cannot meet the high-precision frame processing requirements
Method used
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[0015] There are an outer frame, a middle frame and an inner frame on the turntable. The middle frame has 4 shaft holes that need to be processed. The axes of the two opposite shaft holes must be strictly controlled on the same axis. Each shaft hole must be strictly at an angle of 90°, and each shaft hole is composed of multiple holes with different diameters in series, which is the most difficult to process among all the frames of the turntable. The specific implementation of the processing of the frame of the turntable will be described below by taking the processing method of the middle frame of the turntable as an example.
[0016] Such as figure 1 , figure 2 As shown, first, the flatness of the reference plane 11 of the middle frame 1 of the turntable is not greater than 0.003mm by means of scraping and grinding. Grind four pad irons 10 to make them equal in height, ensuring that the height difference is within 0.01mm. Taking the reference plane 11 of the middle frame...
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A finishing method for a turntable frame belongs to the technical field of mechanical finishing. First determine the center of rotation of the precision boring machine worktable and install the end-face multi-tooth indexing table on it, install the tetrahedron on the end-face multi-tooth indexing table and adjust its alignment with the photoelectric autocollimator to determine the mechanical zero for machining position; install the turntable frame on the workbench and adjust it to be symmetrical to its center of rotation; fine-boring the side of the frame where the shaft holes of the turntable frame and the shaft holes are located until the required precise size is reached, when the frame rotates from one side to the other When using the multi-tooth indexing table on the end face, turn the worktable to the corresponding angle, measure the tetrahedron with the photoelectric autocollimator, and fine-tune the workbench to make the corresponding surface of the tetrahedron collimate with the outgoing light of the photoelectric autocollimator. , the angle of rotation at this time is the exact value, and then it is processed. The method is convenient and intuitive to operate, reliable in processing technology, reduces error accumulation, and improves frame processing precision.
Description
technical field [0001] The invention relates to a processing method for a turntable frame and belongs to the technical field of mechanical finishing. Background technique [0002] The turntable is a device for calibration, testing and inspection of inertial devices, and its precision requirements are particularly high. The turntable body is mainly composed of base, frame and shafting. The frame is an important part of the turntable, and its accuracy largely determines the accuracy of the turntable body. The turntable frame has the characteristics of large size, complex structure, strict symmetry requirements, high rigidity, high strength, light weight, high design precision requirements, and good stability. Therefore, the production and processing of the turntable frame is mainly completed through precision casting, heat treatment, scraping, machining, stability treatment, precision machining and other processes. Its technological characteristics are high processing preci...
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IPC IPC(8): B23B35/00B23B41/00B23Q17/24B23Q17/00B23Q16/02B23Q3/06
Inventor 陈伟孙文利席少明
Owner BEIJING INST OF AEROSPACE CONTROL DEVICES