Machining method for gear ring gear of slewing bearing
A processing method and technology of slewing bearings, applied to belts/chains/gears, gear teeth, components with teeth, etc., can solve problems such as increased manufacturing costs of slewing bearings, broken teeth, large deformation, etc., to save labor costs and The effect of machine tool cost, improvement of processing efficiency, and improvement of service life
Active Publication Date: 2018-09-18
MAANSHAN FY PRECISION MACHINERY CO LTD
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Problems solved by technology
Some construction machinery hosts have harsh working conditions. In order to improve the strength, hardness, wear resistance and toughness of the ring gear of the slewing ring, we usually adopt a surface quenching process for the ring gear, otherwise the wear resistance of the ring gear will decrease. , broken teeth and other failure problems
However, after the ring gear is quenched, the deformation is generally large, and the gear tooth deviation usually does not meet the design requirements. In order to ensure compliance, we usually adopt the following process: after the gear surface is quenched, the gear grinding process is added, and the gear grinding process costs Higher, which greatly increases the manufacturing cost of the slewing ring
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[0016] A method for machining a slewing bearing ring gear proposed by the present invention will be further described in conjunction with the accompanying drawings and embodiments.
[0017] like figure 1 As shown, taking the inner ring gear as an example, the method of the present invention is to increase the feed amount ΔP through the non-mounting surface 1 before quenching, and keep the other end as it is. ΔP decreases uniformly to zero along the tooth thickness.
[0018] The value of ΔP can be expressed as:
[0019]
[0020] In the formula, h is the tooth width, and m is the gear module.
[0021] After the above-mentioned processing of the inner ring gear is completed, the surface quenching process step of the ring gear is carried out. Since the feed rate has been increased in advance before quenching, the thermal deformation caused by tooth surface quenching can be compensated, so that the total deviation of the gear helix (or tooth direction deviation) of the ring g...
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The invention discloses a machining method for a gear ring gear of a slewing bearing. The machining method comprises the machining steps that before quenching, added forming milling tooth root feedingamount delta P is set at one end of the non-mounting face of a gear ring, the feeding amount is linearly reduced until the added feeding amount to the mounting face is zero; and then the quenching treatment is carried out. The machining method is suitable for machining inner gear rings and outer gear rings, meanwhile, by means of the method, the lead variation precision is improved, the tooth surface contact is improved, the service life of the gear is prolonged, the cost is reduced, and a reasonable and feasible guarantee is provided for transmission stability of a main machine.
Description
technical field [0001] The invention belongs to the technical field of slewing bearings, and mainly relates to a processing method for ring gears of slewing bearings. Background technique [0002] Slewing bearings are used in a wide range of fields, and are mainly used in construction machinery, construction machinery, heavy equipment and clean energy. [0003] In recent years, with the continuous development of the construction machinery industry, more requirements have been placed on the transmission stability and load-carrying capacity of the main drive pinion gear and the slewing ring gear of the main engine of construction machinery. Whether the gear tooth deviation of the slewing bearing ring gear meets the design requirements will directly affect the transmission stability and carrying capacity. Some construction machinery hosts have harsh working conditions. In order to improve the strength, hardness, wear resistance and toughness of the ring gear of the slewing rin...
Claims
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IPC IPC(8): B23F1/06
CPCB23F1/06
Inventor 王景龙高盟邵悦王慧董德营杨少龙谢程李小飞
Owner MAANSHAN FY PRECISION MACHINERY CO LTD