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一、小模數齒輪的公差 (1)圓柱齒輪傳動各項要素的公差 齒輪的質量决定於其各項要素加工完成的精度,而整个齒輪傳動的質量尚决定於其裝配的精度。因此为了達到所要求的齒輪傳動的精度,必須限制其傳動系統中各項要素名义值在製造和装配上的偏差。规定齒輪和传动系統各項要素的公差,其目的是: a)保持傳動的速比不变,使其对传动數值具有最小的誤差。 b)保証沿全齒长的接觸。为了將負荷沿接觸線由一个齒輪傳遞到另一个齒輪,应充分利用齒輪的全部寬度。 b)使有適当的間隙,以避免在傳動中發生齒的楔住或过份大的間隙。 1643 46中对動力傳動模數为1～20公厘的圓柱齒轮的公差作了規定。对讀數用的模數为0.3～1公厘的圓柱齒輪傳動,尚未有全苏标準。对讀數用的傳動,要求在有最小齒隙時其傳動
First, the small module gear tolerance (1) cylindrical gear drive tolerance of the various elements of gear quality depends on the completion of the processing of its various elements of precision, and the quality of the entire gear drive is still determined by the accuracy of its assembly. Therefore, in order to achieve the required accuracy of the gear drive, the transmission system must limit the nominal value of each element in the manufacture and assembly of the deviation. The provisions of the gear and transmission system of the various elements of tolerance, its purpose is: a) to keep the transmission speed ratio, so that the transmission value with the smallest error. b) Ensure contact along the entire tooth length. In order to transmit the load from one gear to the other along the contact line, the full width of the gear should be fully utilized. b) Make proper clearance to avoid wedging or excessive clearance of teeth in the drive. 1643 46 in the power transmission module for the 1 to 20 mm cylindrical gear tolerance requirements were made. The readings with a module of 0.3 to 1 mm cylindrical gear drive, has not yet all the Soviet Union standards. The transmission used for reading requires the transmission when there is a minimum backlash