Self-adaptive positioning nut riveting tool and method

A riveting tooling and self-adaptive technology, applied in the field of machining, can solve the problems of low riveting qualification rate of riveting shaft nut, and achieve the effect of solving the low riveting qualification rate, simple operation and high efficiency

Pending Publication Date: 2021-01-22
AECC AVIATION POWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In order to solve the problems existing in the prior art, the present invention provides a self-adaptive positioning nut riveting tool and method, which is simple in operation, high in effici

Method used

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  • Self-adaptive positioning nut riveting tool and method
  • Self-adaptive positioning nut riveting tool and method
  • Self-adaptive positioning nut riveting tool and method

Examples

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Embodiment

[0044]Nut riveting in low-pressure turbine shaft workpieces as an example, such as Figure 1 to Figure 5 As shown, an adaptive positioning nut riveting tool is characterized in that it includes a push rod 1, a positioning compression sleeve 2, a bow body, a conical head 4 and an end face positioning sleeve 5; the ejector rod 1 and the positioning compression sleeve 2 The ejector rod thread 8 is set between them; the positioning sleeve thread 8 is set between the positioning compression sleeve 2 and the arched body. The riveting mandrel 1 is driven by the mandrel thread 8, and the axial load is transmitted to the conical head 4 at the front end of the mandrel to realize the expansion of the riveting shaft nut 6; the positioning sleeve thread 9 is used to drive the positioning compression sleeve 2, and transmit the shaft The load is given to the end face positioning sleeve 5 to realize the compression and abutment of the end face positioning sleeve 5 and the mounting edge end fa...

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Abstract

The invention discloses a self-adaptive positioning nut riveting tool and method. The self-adaptive positioning nut riveting tool comprises an ejector rod, a positioning pressing sleeve, a tool base,a conical ejector head and an end face positioning sleeve. The tool base is of an opening structure, and a through hole is formed in one side of an opening and used for containing a rivet shaft nut. Athreaded through hole is formed in the other side of the opening, and the axis of the through hole is coaxial with that of the threaded through hole. The positioning pressing sleeve is cylindrical, athreaded through hole is formed in the central axis of the positioning pressing sleeve, the positioning pressing sleeve is rotationally connected with the end face positioning sleeve, and a through hole is formed in the central axis of the end face positioning sleeve. The positioning pressing sleeve penetrates the threaded through hole to press the end face positioning sleeve against the circumferential mounting face of a rivet shaft nut mounting hole in a workpiece, and the positioning pressing sleeve is in threaded connection with the tool base through the positioning sleeve. The ejector rod is cylindrical and is rotationally connected with the conical ejector head. The ejector rod penetrates the threaded through hole in the center of the positioning pressing sleeve to press the conicalejector head against the rivet shaft nut of the workpiece, and the ejector rod is in threaded connection with the positioning pressing sleeve through the ejector rod.

Description

technical field [0001] The invention relates to the field of mechanical processing, in particular to a self-adaptive positioning nut riveting tool and method. Background technique [0002] Riveting shaft nut installation technology is an important part of aero-engine research and development, and a key technology to ensure engine reliability and life. Riveting shaft nuts are widely used in aero-engines, and the installation quality of rivet shaft nuts is related to the reliability and life of the engine. At present, the installation of riveting shaft nuts in the aero-engine industry usually adopts traditional single-threaded manual tooling and pressure riveting. This type of riveting tooling has great risks in the use process, and accurate alignment and riveting cannot be achieved. The installation pass rate and efficiency Depending on the technical ability and experience of the operator, usually the qualified rate of riveting will not exceed 50%. Misalignment of the exist...

Claims

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Application Information

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IPC IPC(8): B21D39/00B21D43/00
CPCB21D39/00B21D43/003
Inventor 宋宝鑫宋树林赵建樊常江杜忠华党红武孙智康刘学凯
Owner AECC AVIATION POWER CO LTD
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