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Process, because of the reading of some reading room values ​​in the processing BBff!
Chongqing Gearbox Co., Ltd. (Jiangjin 402263) Wang Shichen figure will produce some errors in the gear manufacturing, and how much impact of these mistakes on the accuracy of the gears requires us to analyze and study in theory and practice. These analyses and research are crucial to our gear design and process development and their manufacturing. 1. The relationship between the radial runout of the gear and the length of the common normal. After the heat treatment and finishing of the gear, the diameter will be The change to the beating is large, which makes the length control of the common normal length of the gear finishing grinding process difficult. The length of the common normal is reduced, and the gear can be ground. This requires us to find out the relationship between the factory and the horn.
In fact, the formation of the radial runout of the gear can also be understood as the displacement of the tool position relative to the center of rotation of the gear during gear machining. As shown by the overlap of the two toothed corridors with the largest change in the diameter of the gear, the tool is displaced. At, the gear diameter jump is generated from the graph analysis: At two', in this way, the relationship between the found and the relationship between the factory and the factory is found. From the right triangle MC, it can be seen that the oblique side Xian = At, right angle BC = single-sided profile common normal length length AK, a is the pressure angle. Therefore: In summary: the relationship between the length change of the double-tooth profile and the diameter jump factory is 丨0 to 7 (when the pressure angle is 20).
2. The relationship between the tooth end face jump iS and the gear tooth error value AP of the gear is different in the tooth end face AS, that is, the gear end face and the gear axis line are perpendicular to each other. In the middle, the solid line is the ideal tooth end face and the axis line position, and the broken line indicates the position of the actual tooth end face and the axis line. When the end jump value is A5, the angle between the ideal axis line and the actual axis line is: On the machine tool, it can also be understood that the tooth end face still maintains the ideal plane, but the machine tool holder (or grinding wheel) column is tilted forward or backward, as shown.
At this time, when the tool moves from bottom to top, the tool will produce some slight radial motion to the tooth profile. The radial feed is At, and the radial motion makes the AIT cut at the upper end of the tooth profile. The face tooth profile normal length is 1 degree change), here the tooth direction error will occur, we can roughly think of the proportional relationship with Qiu Chengzheng, as shown, that is, from the above formula, the same end face jump AS In other words, the wider the tooth width, the greater the influence of the end jump A3 on the tooth error value, and the smaller the diameter 0, the smaller the influence of the end jump on the tooth error value Ap.
That is, the tooth direction error value A/3 is proportional to the tooth width and the end face jump, and is inversely proportional to the diameter of the end face of the alignment. For any certain gear, the degree of impact of the end face jump on the tooth error value Qiu is generally achievable. (:I99912M) Book News EU "arms" safety mark information compilation The main contents are: for EU 89/392/FS: Amendment to the Directive C91/368/EEC), on the harmonization of electromagnetic compatibility laws of various member states The instruction [89/336/EEC], 16 low-voltage instructions (73/23/EEC), nearly 200 pages, priced at 40 yuan (including postage). Contact: Arcsal Workers, No. 39, Fang'an Hutong, Beijing
