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

A pressure-assisted precision machining method for thin-walled blanks

A technology of precision machining and blanks, applied in the field of precision machining of thin-walled blanks, it can solve the problems of inability to guarantee the shape and dimensional accuracy of the final parts, and achieve the effects of low cost, good versatility and reasonable design

Active Publication Date: 2017-03-01
HARBIN INST OF TECH
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims to solve the problem that the existing cutting processing methods and devices cannot avoid complex deformation or movement during cutting of large-size thin-walled blanks, resulting in the inability to guarantee the shape and dimensional accuracy of the final parts, and further proposes a pressure-assisted thin-walled blank Precision Machining Method

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
  • A pressure-assisted precision machining method for thin-walled blanks
  • A pressure-assisted precision machining method for thin-walled blanks
  • A pressure-assisted precision machining method for thin-walled blanks

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0020] Specific implementation mode one: combine Figure 1-6 To illustrate, a pressure-assisted precision machining method for thin-walled blanks in this embodiment is implemented in accordance with the following steps:

[0021] Step 1, placing the blank 1 to be processed on the support tire mold 2;

[0022] Step 2, placing the pressure medium chamber 3 on the blank 1 to be processed, so that the lower end of the pressure medium chamber 3 is in close contact with the peripheral area of ​​the blank 1 to be cut to realize sealing;

[0023] Step 3: Fill medium 5 into the pressure medium cavity 3, the pressure of the medium is 0.2-10MPa, and use the medium 5 to press the blank 1 to be cut tightly against the support tire mold 2;

[0024] Step 4, using the cutting tool 6 placed inside the pressure medium cavity 3 to cut the blank 1 to be cut to obtain the final required parts;

[0025] Step 5, remove the pressure in the pressure medium chamber 3, remove the cutting tool 6 and the...

specific Embodiment approach 2

[0028] Specific implementation mode two: combination figure 1 , figure 2 , Figure 5 and Figure 7 Note that the pressure medium cavity 3 used in step 2 of this embodiment is a composite structure of a rigid pressure medium cylinder 4 and a flexible bladder 9, and a sealing strip 11 is provided between the lower end of the rigid pressure medium cylinder 4 and the blank 1 to be cut. , the rigid pressure medium cylinder 4 is pressed against the blank 1 to be cut by the briquetting block 13 to realize the sealing between the rigid pressure medium cylinder 4 and the blank 1 to be cut; the upper end surface of the rigid pressure medium cylinder 4 is combined with the flexible bag 9 , the specific way of compounding is to use bolts 15 and nuts 14 to squeeze each other between the briquetting block 13 and the rigid pressure medium cylinder 4, so as to realize the sealing between the extruded flexible bag 9 and the rigid pressure medium cylinder 4; the rigid pressure medium cylinde...

specific Embodiment approach 3

[0032] Specific implementation mode three: combination image 3 , Figure 4 , Figure 6 and Figure 7 Explain that the pressure medium cavity 3 adopted in the second step of this embodiment is a composite structure of the rigid constraining frame 8 and the flexible bladder 9, and the lower end of the rigid constraining frame 8 uses a pressing block 13 to press the lower edge of the flexible bladder 9 against the surface to be cut. On the processed blank 1, the upper part of the flexible bag 9 is sealed between the sealing ring 12 and the actuator 7, so that a pressure medium cavity is formed between the flexible bag 9 and the blank 1 to be cut.

[0033] The pressure medium cavity 3 used in step 2 is a composite structure of the rigid constraint frame 8 and the flexible capsule 9, and the lower end of the rigid constraint frame 8 presses the lower edge of the flexible capsule 9 against the blank 1 to be cut, so that the flexible capsule 9 A pressure medium cavity is formed b...

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 discloses a pressure-assistant thin-wall blank precise processing method, relating to a precise processing method of a thin-wall blank and solving the problem that the shape and size precision of the final part cannot be guaranteed as an existing cutting processing method and device cannot avoid complex deformation or movement of large-size thin-wall blank during the cutting process. The method comprises the main steps of: step 1, placing a to-be-cut blank on a support molding bed and positioning the blank; step 2, placing a pressure medium cavity on the to-be-processed blank; step 3, filling a medium with the pressure medium cavity; step 4, cutting the to-be-cut blank by utilizing a cutting tool placed inside the pressure medium cavity to obtain a finally needed part; step 5, removing pressure in the pressure medium cavity, moving away the cutting tool and the pressure medium cavity and taking the part out. The pressure-assistant thin-wall blank precise processing method is used for precise processing of the thin-wall blank.

Description

technical field [0001] The invention relates to a precision machining method for thin-walled blanks, in particular to a pressure-assisted precision machining method for thin-walled blanks. Background technique [0002] In the field of aerospace, there are many large-sized sheet metal parts, the size of which can reach 2m or more in one direction in the plane, and the thickness is generally in the range of 5-30mm, which is a typical thin-walled sheet metal part. Such parts usually use the original slab with equal wall thickness, and make the required single curvature parts or parts with complex curved surface shapes through plastic forming processes such as drawing, deep drawing or roll bending. In order to further reduce the weight of the parts, it is necessary to perform cutting or chemical milling on the parts after plastic forming to remove excess material at local positions, and to maximize the final parts while ensuring the overall mechanical properties and stiffness re...

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
Patent Type & Authority Patents(China)
IPC IPC(8): B23Q3/00
CPCB23Q3/00B23Q2703/04
Inventor 何祝斌苑世剑
Owner HARBIN INST OF TECH
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