Solve the problem of upper cutter head with scientific method 1. When the cutter head is checked after machining, it is found that the angle D of C slot and d slot is not correct. Is clearly according to the Diagram d inclined programming processing, why this situation, what causes it? 2. The analysis and research can only start from the whole process of machining technology, such as the examination of the drawing of the upper cutter head, the selection of the equipment, the selection of the cutting tools, the positioning and positioning of the workpiece, the determination of the machining datum and the machining method By using the method of exclusion to analyze and study item by item, find out the reason of the existing problems and put forward the solution. (1) graphic aspect. The view is projected correctly, the dimensions are correct, and there is nothing wrong with it. (2) equipment selection. MEDIUM-SIZED CNC boring machine with rotary table. Can satisfy with the procedure processing and the separate request, has any improper place. (3) selection of cutting tools. End Mill with bar type. Can meet the requirements of both end milling and peripheral milling, there is nothing wrong with it. (4) the positioning and positioning of the upper cutter head. The upper cutter head is horizontally placed on the rotary table of the NC boring machine through three equal height spacers, and the outer circle of the upper cutter head is aligned with the dial indicator Adjust the center line of rotation of upper cutter head and the center line of rotation of NC boring machine. Positioning and positioning methods in line with the accuracy of the rules of processing requirements, there is no problem. (5) determination of the starting point for processing e and F slots (6) processing e and F slots. According to the above datum point as the starting point, with (L / 2-b) step-by-step Cutter, according to the Angle d as the inclined direction, using two-axis and half-way programming, using rod milling cutter to process e Chute and f Chute and related a and B above;. 3. The discovery and solution of the problem from the above analysis process, seems to be all reasonable, but the problem exists, the reason in the end where? In my perplexity, I think of the working process of cutting steel strip with up and down cutter disk, which is similar to the transmission of helical gear pair The tilt angle of the projection is different in the overhead view. 4. Conformity Test (1) electronic measuring arm test: Because the accuracy of NC boring machine and other factors have some impact on the accuracy of processing, whether the sloped groove meets the design requirements or not, it is very difficult to test it by conventional methods. In order to ensure the reliability of the inspection, the electronic measuring arm with high precision is selected to check the slope groove and the degree of separation. (2) in-kind installation inspection: through the installation of the upper and lower cutter disks and the related cutting edges on the user's site, manual and no-load rotation tests, it is proved that the cutting edges in the upper cutter disks and the lower cutter disks are in the correct position at the cutting point and meet the design requirements. 5. Conclusion through the above analysis of the problems on the cutter head, according to the specific position of the starting point of the machining, using the principle of three-view projection to find out the root of the problem, re-determine the degree of d inclination angle. After reprogramming, processing, to a successful installation test to meet the design requirements. It illustrates a truth: When encountering a complex problem, do not be afraid, do not shrink back, to use their own scientific knowledge to judge, put forward in line with the objective and practical ways to solve.