Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for manually drilling hole in curved surface precisely in normal vector direction

A technology of normal vector direction and curved surface, which is applied in the field of curved surface machining, can solve the problems of large dependence on technical experience, increased equipment investment, and the risk of hole out-of-tolerance, etc., and achieve low operational difficulty, eliminate scrapped parts, and easy control of precision Effect

Inactive Publication Date: 2016-12-21
CHENGDU AIRCRAFT INDUSTRY GROUP
View PDF5 Cites 13 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method for manually making holes on a curved surface according to the normal vector direction, which is used to solve the problem that the existing manual hole making method described in the background technology relies heavily on the technical experience of the operator, resulting in holes The problem of high risk of out-of-tolerance and the use of industrial robots to achieve curved surface drilling lead to increased equipment investment

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for manually drilling hole in curved surface precisely in normal vector direction
  • Method for manually drilling hole in curved surface precisely in normal vector direction
  • Method for manually drilling hole in curved surface precisely in normal vector direction

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Below, a certain type of aircraft needs to make 16 holes of φ9.6mm on the curved surface of the wing root, and the verticality requirement is φ0.1mm as an example for further description. Among them, the root of the wing is a concave surface with a large curvature and an average radius of 450mm. Using the existing technology to carry out the operation experiment, the data are as follows:

[0031] Select a junior operator, an intermediate operator, a senior operator, an operating technician, and a senior operating technician who are equipped with aircraft riveting fitters, and respectively operate 16 holes on the above-mentioned wings. Through experimental measurements, the corresponding average The verticality is: φ2 mm, φ1.8 mm, φ1.2 mm, φ0.58 mm, φ0.36 mm, and the maximum verticality tolerance of a single hole is: φ2.8 mm, φ2.3 mm, φ1 .7 mm, φ0.69 mm, and φ0.48 mm. From this, it can be concluded that relying on personal experience and visually aligning the normal dir...

Embodiment 2

[0043] combined with Figure 1-3 As shown, a method for manually making holes on a surface accurately according to the direction of the normal vector includes the following steps:

[0044] 1.1 Install the skin 2 on the skeleton 1 and fix it in position;

[0045] 1.2 Install the curved surface drilling jig 3 on the outer surface of the skin 2, position and connect the curved surface drilling jig 3 and the skeleton 1 through the positioning pin 5 and fasten them;

[0046] 1.25 Debug and verify the gap between the skin 2 and the skeleton 1, and the gap between the skin 2 and the curved surface drilling mold 3. The tool used for the verification is a feeler gauge, and the feeler gauge is The insertion end is semicircular, the radius R=5mm, and the thickness is 0.6mm.

[0047] 1.3 Install the initial hole drill sleeve 4 in the processing hole 32 provided on the curved surface drilling mold 3; in this step, the inner diameter of the initial hole drill sleeve 4 is φ6mm, and the int...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Mean radiusaaaaaaaaaa
Login to View More

Abstract

The invention discloses a method for manually drilling a hole in a curved surface precisely in the normal vector direction. The method comprises the following steps that 1.1, a skin is installed on a framework, positioned and fixed; 1.2, a curved surface drilling jig is installed on the outer surface of the skin, connected with the framework in a positioned mode and fastened through a positioning pin; 1.3, a primary hole drill bushing is installed in a machining hole formed in the curved surface drilling jig; 1.4, the skin is drilled through from outside to inside in one time through a drill bit in the guide direction of the primary hole drill bushing; 1.5, the primary hole drill bushing in the step 1.4 is replaced with a hole expanding drill bushing, and a corresponding hole expanding drill bit is used for conducting step-by-step hole expanding and / or hole reaming till a finished hole is formed; 1.6, the steps from 1.3 to 1.5 are repeated for other machining holes; and 1.7, burr treatment is conducted on the machining holes. According to the method for manually drilling the hole in the curved surface precisely in the normal vector direction, the problem that the perpendicularity of the axis of the curved surface hole is difficult to control is solved through the curved surface drilling jig and the primary hole drill bushing, and the situation that a part is scrapped due to the fact that the perpendicularity of the machining hole is out of tolerance is greatly reduced.

Description

technical field [0001] The invention relates to the field of curved surface mechanical processing, in particular to the field of manual drilling technology on the curved surface mechanical surface, specifically, a method for manually making holes on the curved surface according to the direction of the normal vector. Background technique [0002] The verticality of the normal holes made on the curved surface during the assembly of aircraft components directly affects the verticality of the connectors. If the verticality is out of tolerance, the protruding amount of the nail head of the connectors will exceed the specified technical requirements and affect the connection of the connectors. strength. Therefore, there are strict requirements on the perpendicularity of the normal holes on the surface. With the popularization and use of new connectors and the improvement of aircraft surface quality, the verticality of such holes is becoming more and more strict. [0003] At pres...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): B23P13/02B23B47/28
CPCB23P13/02B23B47/28
Inventor 张宜德詹有河贾朝定
Owner CHENGDU AIRCRAFT INDUSTRY GROUP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com