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

Manufacturing method of special-shaped hole at threads of thin wall part

A technology of thin-walled parts and special-shaped holes, which is applied in the field of thin-walled parts manufacturing, can solve the problems of complicated procedures, high cost, and the gas and liquid in the holes cannot be discharged smoothly, and achieves the effect of simple procedures and reduced processing costs.

Inactive Publication Date: 2012-07-11
AVIC STANDARD PARTS MFG
View PDF5 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The parts processed according to the traditional process method need to be clamped many times. When processing the special-shaped hole on the punching machine, if the ordinary punch is used, the gas and liquid in the hole cannot be discharged smoothly, and a strong pressure is generated in an instant, causing the thread to swell and deform locally.
The traditional process scheme not only cannot meet the requirements of thread and special-shaped holes of thin-walled parts, but also has cumbersome procedures and high cost

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
  • Manufacturing method of special-shaped hole at threads of thin wall part
  • Manufacturing method of special-shaped hole at threads of thin wall part
  • Manufacturing method of special-shaped hole at threads of thin wall part

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0018] Taking the processing of a countersunk screw as an example, the thread of the countersunk screw has a hexagonal hole, the width across the hexagon is 1.63mm, the depth of the hole is 3.00mm, the small thread diameter and the wall thickness of the hexagonal hole are only 0.53mm~0.58mm, see figure 2 and image 3 shown.

[0019] Adopt manufacturing method of the present invention to finish processing according to the following steps:

[0020] Step 1: Rolling thread, thread ring gauge, major diameter, minor diameter, middle diameter, root radius are all qualified.

[0021] Step 2: On an ordinary hexagonal lathe, use a Φ1.61mm drill bit to make a preparatory hole (cylindrical hole). The prepared preparatory hole has a diameter of Φ1.61mm~Φ1.62mm and a depth of 4.3mm~4.5mm.

[0022] Step 3: After making the preparatory hole, directly make the hexagonal hole, choose a special hexagonal punch with a width across the side of 1.64mm for processing special-shaped holes in the th...

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

No PUM Login to View More

Abstract

The invention relates to a manufacturing method of a thin wall part, particularly a processing method of a special-shaped hole at threads of a thin wall part. The manufacturing method is implemented on a common turret lathe or numerical-controlled lathe, and completed by one-time clamping of a preparation hole (cylindrical hole) and a special-shaped hole. The manufacturing method comprises steps as follows: 1. threads are rolled according to a conventional method; 2. the part is clamped on the common turret lathe or numerical-controlled lathe to make the preparation hole; 3. after the preparation hole is made, the part is not taken down, and the special-shaped hole is directly processed by using a purpose-made special punching head; and 4. when processing the special-shaped hole on the common turret lathe or numerical-controlled lathe, the part does not rotate, and the punching head slowly extrudes the cylindrical hole in a manual feed mode by using the punching head, wherein the axial feed speed is not suitable to be too high, generally 0.1-1mm per second.

Description

technical field [0001] The invention relates to a manufacturing method of a thin-walled part, in particular to a method for processing a special-shaped hole at a screw thread on a thin-walled part. technical background [0002] Thin-walled parts are widely used in various industries, especially aviation and aerospace industries. The traditional process method of this kind of parts: rolling thread, making a preparatory hole (cylindrical hole), making a special-shaped hole on a punch, and finally correcting the thread. The parts processed according to the traditional process method need to be clamped many times. When processing the special-shaped hole on the punching machine, if the ordinary punch is used, the gas and liquid in the hole cannot be discharged smoothly, and a strong pressure is generated instantly, causing the thread to swell and deform locally. The traditional process scheme not only cannot meet the requirements of thin-walled parts threads and special-shaped h...

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): B23P15/00B21D28/34
Inventor 马勇张建勋王锐锋施雪辉杨荣祥
Owner AVIC STANDARD PARTS MFG
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