Integrated tandem-type small-modulus gear hob and processing method and use method thereof

Abstract

The invention discloses an integrated tandem-type small-modulus gear hob and a processing method and use method thereof. The gear hob includes a hob rod and a hob body which is arranged on the hob rodand connected with the hob rod in an integrated mode, the hob body is provided with two or more annular isolating grooves at equal intervals, and the annular isolating grooves isolate the hob body into multiple independent hob parts in series. Since the integrated small-modulus gear hob is formed by integrating each relatively independent hob part with the mounting hob rod in a series mode, it isnot required to install the hob rod, a gasket, a pressing nut and other components during use, and therefore not only are the installation errors of the hob parts decreased, but the use costs are decreased. Moreover, coarse processing and precise processing are conducted on the same component by adopting each relatively independent hob part in series on the hob body after disposable clamping, theaccuracy of components after processing is stable, and the defects of existing small-modulus gear hobs are overcome.

Description

technical field [0001] The invention relates to a tandem small modulus gear integral hob, a processing method and a use method thereof, and belongs to the field of gear cutter manufacturing technology and use. Background technique [0002] At present, the length of the cutting edge of the conventional small modulus gear hob is less than 30mm, which is gradually reduced with the decrease of the tool modulus. This is because during the processing of the small modulus gear hob, relief grinding When the top edge relief angle and the side edge relief angle are used, due to the natural shedding and blunting of the abrasive grains of the grinding wheel, the axial pitch error of the hob will be too large. Therefore, in order to ensure the manufacturing accuracy of the small modulus gear hob , the maximum length of the cutting edge generally does not exceed 30mm, and the current small modulus gear hobs are installed in the middle hole during manufacture and use, and the disadvantage ...

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Problems solved by technology

[0002] At present, the length of the cutting edge of the conventional small modulus gear hob is less than 30mm, which is gradually reduced with the decrease of the tool modulus. This is because during the processing of the small modulus gear hob, relief grinding When the top edge relief angle and the side edge relief angle are used, due to the natural shedding and blunting of the abrasive grains of the grinding wheel, the axial pitch error of the hob will be too large. Therefore, in order to ensure the manufacturing accuracy of the small modulus gear hob , the maximum length of the cutting edge generally does not exceed 30mm, and the current small modulus gear hobs are installed in the middle hole during manufacture and use, and the disadvantage is that the length of the cutting edge of the hob is limited , that is to say, the number of hob shifting during use will be reduced accordingly, which increases the frequency of tool change and regrinding of the hob, reducing production efficiency; at the same time, during the manufacturing and use of small modulus gear hobs, If you use the center hole for positioning and installation, you must have the corresponding installation tool rod, washer, compression nut and other accessories, which not only increases the cost of the hob, but also increases the installation error of the hob and reduces the manufacturing of small modulus gears. precision

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