A non-standard bearing outer ring grinding groove processing method for positioning grooves on the end face
A technology of non-standard bearings and processing methods, which is applied to aircraft parts, transportation and packaging, etc. It can solve the problems of low processing accuracy, high scrap rate of ferrules, and high position requirements, so as to improve work efficiency, reduce scrap rate, and improve The effect of machining accuracy
Active Publication Date: 2018-07-31
AVIC HARBIN BEARING
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Problems solved by technology
[0003] In order to solve the problems in the prior art that the main shaft bearing outer ring end face of the aero-engine has a high position requirement for positioning grooves, low machining accuracy, it is difficult to meet the requirement of symmetry of 0.1 μm, and the ferrule has a high scrap rate, the present invention further provides an end face Non-standard bearing outer ring grinding groove processing method for positioning groove
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specific Embodiment approach 1
[0018] Specific implementation mode one: combine Figure 1-Figure 2 Describe this embodiment, the non-standard bearing outer ring grinding groove processing method of a kind of end surface positioning groove described in this embodiment, described method is realized according to the following steps:
[0019] Step 1: Groove milling: Install the non-standard bearing outer ring module on the CNC milling machine, position it through the large end face F of the non-standard bearing outer ring and the inner circular surface E of the non-standard bearing outer ring, and mill the first The small slot P1, the second small slot P2, the third small slot P3, the fourth small slot P4, the first large slot Q1, the second large slot Q2, the third large slot Q3 and the fourth large slot Q4, and the first large slot The groove Q1, the second small groove P2, the third large groove Q3, the fourth small groove P4, the second large groove Q2, the first small groove P1, the fourth large groove Q4 ...
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Abstract
The invention relates to a non-standard bearing outer ring mill groove machining method for end surface positioning grooves, and aims to solve the problems that in the prior art, positioning grooves in the outer ring end surface of a main-shaft bearing of an aero-engine is high in position degree requirement and low in the machining precision, the 0.1-micrometer symmetry degree requirement is difficult to meet, and the loop rejection rate is high. The non-standard bearing outer ring mill groove machining method comprises the following steps: step 1, groove milling; step 2, rough grinding of a non-standard bearing outer ring for positioning; step 3, rough grinding of small grooves; step 4, rough grinding of large grooves; step 5, heat treatment; step 6, finish grinding of the non-standard bearing outer ring for positioning; step 7, finish grinding of the small grooves; and step 8, finish grinding of the large grooves. The non-standard bearing outer ring mill groove machining method provided by the invention is applicable to the field of bearing machining.
Description
technical field [0001] The invention relates to a non-standard bearing outer ring grinding groove processing method, in particular to a non-standard bearing outer ring grinding groove processing method with an end surface positioning groove. Background technique [0002] The main shaft bearings of aero-engines are made of heat-resistant steel, and some bearings are non-standard series, with positioning grooves on the end faces of the outer rings. The difficulty in processing the positioning grooves on the end face of the outer ring is mainly the processing and inspection of the positioning grooves. Since there are four symmetrical grooves on the end face, each large and small, the large and small grooves are distributed at an interval of 45°. For inspection, it takes too long to test with a universal measuring instrument, which affects the normal processing of the product. The machining accuracy is low, and it is difficult to meet the requirement of symmetry of 0.1 μm. As ...
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IPC IPC(8): B23P15/00
CPCB23P15/00B23P2700/01
Inventor 唐双晶杨雪林赵生明徐雷刘颖志宁仁强刘明阳王福成
Owner AVIC HARBIN BEARING