Eccentric directional assembly for eccentric reaming, eccentric dosing assembly, eccentric reaming assembly, kits and methods

An eccentric and component technology, applied in the field of hole processing, can solve the problems of low workpiece positioning accuracy, no measuring mechanism, and low precision, and achieve the effects of adjustable hole diameter, convenient and simple operation, and accurate eccentric direction
CN111644664BActive Publication Date: 2021-07-23COMAC +1
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Patents(China)
Current Assignee / Owner
COMAC
Publication Date
2021-07-23

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Abstract

The invention provides an eccentric orientation assembly, an eccentric quantitative assembly, an eccentric reaming assembly, a kit and a method for eccentric hole reaming. The kit includes a fixed base (1), a telescopic mechanism (2), a variable inner diameter jigsaw set (3), a fastening screw (4), a positioning pin (5), a stop screw (6), and a positioning reference ruler ( 7). The eccentric orientation assembly includes a fixed base (1), a telescoping mechanism (2) and a positioning pin (5) in the kit. The eccentric quantitative component includes a fixed base (1), a telescoping mechanism (2), a variable inner diameter drill sleeve (3) and a positioning standard ruler (7) in the kit. The eccentric reaming assembly includes a fixed base (1), a telescopic mechanism (2), a variable inner diameter drill sleeve (3), a stop screw (6) and a hole-making drill in the kit. According to the invention, the operation of eccentric reaming is convenient and simple, and the precision is also improved.
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Description

technical field

[0001] The invention relates to the field of hole processing, in particular to a processing tool and method for eccentrically expanding existing holes. Background technique

[0002] In the field of modern civil aircraft, fastener connection is a typical form of assembly connection. In order to ensure the connection strength, the center-to-center distance of the mounting holes of adjacent fasteners must meet strict requirements, otherwise it will lead to increased stress concentration, resulting in the risk of premature fatigue failure of the aircraft structure during operation. When there is a deviation in the positioning of the mounting hole, if the mounting hole is a guide hole and the deviation is within a certain range, the problem can be solved by eccentric reaming in the direction of increasing the hole center distance, thereby avoiding scrapping of parts.

[0003] Patent application 201520286986.3 provides a jig for eccentric hole processing. This pat...

Claims

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