Structural Improvement of High-tech Nut Lock Wire Hole Processing Liu Junxiao Zhang Xiangdong Li Yuan Zhang Tong Liu Peng (Shenyang Liming Aerospace Parts Manufacturing Co., Ltd., Shenyang 110043, China) The processing of such holes is usually processed directly on the fixture or in six aspects. Drilling after the nest, but it is easy to cause large burrs, low efficiency, difficulty in size control, etc. This paper starts from the technical standard of the hexagonal part safety hole and changes the previous processing method to improve the structure of the lock wire hole, and design the structure. Simple and convenient drilling process hole clamp wire hole processing accurate and fast related dimensions have theoretical basis lock wire hole burr small, high processing efficiency, high pass rate, the overall quality of the parts has been greatly improved, also for the lock wire hole Processing opens up a new way of thinking. Nut parts are one of the most widely used and most commonly used fastening parts in the machinery industry. Most of these parts have locking wire holes and fastening and connecting functions in the thread structure assembly. In recent years, the wide application of numerical control equipment nuts as a typical type of rotating parts of fastener parts, the process route and method have been very mature and the lock wire hole is a common structure among hexagonal nuts, and its processing has always been burr Problems such as difficulty in dimensional control confuse the quality and efficiency of part production. 2 processing status of hexagonal nut lock wire hole Traditional nut lock wire hole has two processing methods. First, put the part into the fixture, drill the hole, and the burr is difficult. The part is difficult to take out. Find the center of the hole and then use a drill bit larger than the hole diameter to drill the hole on the bench drill and finally drill the hole with the drill. These two processing methods have many defects and drawbacks. The time-consuming and laborious processing is low. The quality is difficult to ensure that the hole burr is large. The diameter of the drill bit is slightly larger than the diameter of the lock wire hole. However, the choice of the drill diameter depends on the operator's experience. There is no file support, so the size of the nest is inconsistent. The depth of the nest can not control the aging of the machine. The bit stroke cannot accurately reflect the depth of the operator's feel. The depth of the station head slips naturally. Therefore, these methods restrict the processing of the lock wire hole, and the quality of the production parts is not guaranteed. 3 lock wire hole processing improvement research to improve the quality of lock wire hole work lock wire hole standardization We use the basic technical documents such as design drawings to start from the professional standard of hexagonal thread parts safety hole according to the standard, the process of locking wire hole According to the specifications and aperture of the hexagonal parts, the size requirements of the process holes for drilling the through holes after drilling the process holes are first specified in the standard. By carefully studying the standard documents and combining the design drawings, We have re-recognized the specific requirements and processes for processing the hexagonal parts to lock the wire holes and found a strong basis for this breakthrough. After analysis and research, combined with the status quo of on-site processing, we have selected a kind of hexagonal nut with a hexagonal size of S36 hexagonal two lock holes with a diameter of 1.5mm. The distance from the center to the end of the hole is 2.5 mm to the distance of the hexagonal point. 2mm. According to the professional standard of the lock wire hole, the size and limit deviation of the process hole for the lock wire hole have fine rules, so the processing of the process hole has a strong theoretical basis. In order to accurately process the process hole, a special drill hole clamp is designed. The fixture structure of the first design is designed by the hexagonal shape. The two drill sleeves are arranged on the basis of the hexagonal and end faces. The structure is stable and easy to flip. Loading and unloading, the six parts of the parts are placed in the inner hexagonal support. Although the structure is easy to process and the parts are loaded and unloaded, the scheme can theoretically realize the purpose of drilling the process holes, but the manufacturing of the clamp has a limited structure and is not well processed. Therefore, it is decided to change the fixture structure support into two parts: the flat support and the inner hexagonal support plate, and the positioning pin is added for positioning and accurate connection. After the improvement, the reference is not changed and the manufacturing process of the clamp is facilitated. After the fixture is manufactured, a batch of parts are processed according to the new scheme. The relevant dimensions of the parts lock wire hole are all qualified. The L-mouth burr is small enough to fully meet the design and process requirements, and the part quality is good. The processing speed is fast, and the parts are easy to load and unload. The effect proves the feasibility and correctness of the scheme. The structural improvement made this time changed the method of direct drilling of the wire hole in the past. The design of the special jig drilling process hole is accurate, the structure of the protruding device is simple, the convenient loading and unloading parts are convenient, the time and labor are saved, and the labor saving of the operator is saved. The time for overall processing of the line and the dot is greatly shortened! The drill bit drilled into the hole on one side has a small burr. The slippage phenomenon is significantly less. The quality and efficiency of the lock wire hole are greatly improved. The improvement effect is obvious and satisfactory. This jig can be used as a basic prototype. The change of the processing of the wire lock hole that can adapt to different structure and shape requirements has opened up a new idea for the processing of the lock wire hole. 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