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According to the above analysis calculation and the shape characteristics of the workpiece, it is necessary to machine the MM hole system (ie, the OP axis system) and the KK hole system (that is, the axis system parallel to the B point and the OP), and the FOG plane must be managed in the horizontal trampoline. The plane of the machine table is parallel and the line BP is perpendicular to the machine tool spindle. To this end, the part A surface of the machine is tilted by 7.3854° and rotated along the working plane of the machine by 10.0845°, so that the KK and MM axes are parallel to the machine tool spindle and the straight line BP is perpendicular to the machine tool spindle. After one hole system, moving the part 488.5112mm horizontally, the other hole system can be smoothly processed. At this point, the analysis and calculation of the processing scheme of the double inclined hole system is completed. In the trial production process of the part, the parts processed by the above three data design fixtures are exactly the same as the imported parts by the coordinate measuring machine.
If the first scheme is adopted, the major axes of the headstocks of the KK and MM hole systems are respectively parallel to the OP straight line. That is, the main shaft should be at the composite corner of the space formed by the 7.3854° position and the 10.0845° position. Therefore, the change of one angle in the process of manufacturing, installation and adjustment will inevitably bring about a corresponding change of another angle, and vice versa, which makes the adjustment of the machine tool very difficult. Therefore, the second option is the best solution. By making the A-side pad of the part 7.3854°, and making 10.0845° on the headstock of the boring head, the spatial composite angle is decomposed into two different parts, which greatly simplifies the manufacture and installation, especially in production. Tool adjustment. (Finish)
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