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

A laser metal additive manufacturing method with automatic cooperative controllable light spot and powder spot

A metal additive and manufacturing method technology, which is applied in the field of laser metal additive manufacturing devices, can solve problems such as the inability to guarantee the forming quality of variable melting width forming, and achieve the effect of taking into account efficiency and precision, improving cladding accuracy, and improving forming efficiency

Active Publication Date: 2019-01-22
NORTHWESTERN POLYTECHNICAL UNIV
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, according to the research on the interaction between laser and powder and the deposition process of simultaneous powder-feeding laser additive manufacturing, in the actual forming process, the spot size-powder spot size-other forming process parameters must have a good match to achieve a good forming effect
Only dynamically adjusting the size of the laser spot without synchronously controlling the powder delivery will not be able to guarantee the forming quality of variable width forming

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 laser metal additive manufacturing method with automatic cooperative controllable light spot and powder spot
  • A laser metal additive manufacturing method with automatic cooperative controllable light spot and powder spot
  • A laser metal additive manufacturing method with automatic cooperative controllable light spot and powder spot

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0035] When adopting the method described in the present invention to form the member with variable wall thickness in one pass, such as figure 2 As shown, it includes the following steps.

[0036] Step 1. Obtain the correspondence between the spot size of the workpiece processing surface and the distance Z from the focusing mirror to the workpiece processing surface, and the relationship between the powder spot size and the distance z from the powder feeding nozzle to the workpiece processing surface through experimental measurement and optical geometry calculation. Correspondence;

[0037] Step 2, through the process experiment and the measurement of the geometric dimensions of the cladding layer, establish a process database including the correspondence between the three data of cladding layer size, spot size and powder spot size, and establish the cladding layer size based on the data of the process database Controllable spot and powder spot synergistic control strategy; ...

example 2

[0044] Using the method of the present invention to improve the forming efficiency and precision of laser additive manufacturing when forming thick and large components, such as Figure 4 As shown, it specifically includes the following steps:

[0045] Step 1. Obtain the correspondence between the spot size of the workpiece processing surface and the distance Z from the focusing mirror to the workpiece processing surface, and the relationship between the powder spot size and the distance z from the powder feeding nozzle to the workpiece processing surface through experimental measurement and optical geometry calculation. Correspondence;

[0046] Step 2, through the process experiment and the measurement of the geometric dimensions of the cladding layer, establish a process database including the correspondence between the three data of cladding layer size, spot size and powder spot size, and establish the cladding layer size based on the data of the process database Controlla...

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 laser metal additive manufacturing device and method for automatically synergizing and controllable light spots and powder spots. The moving sleeve outside the barrel, the powder feeding nozzle fixed at the lower end of the moving sleeve, and the CNC workbench for placing the workpiece; the laser focusing head is used to form a spot on the workpiece processing surface through the focusing mirror; the powder feeding nozzle is used to put the powder The flow is converged and sent to the processing position to form powder spots on the workpiece processing surface; the center of the light spot and the powder spot always coincide; the CNC workbench is used to drive the workpiece to move in space relative to the focusing mirror to control the defocus distance; the moving sleeve is equipped with a driving device , the driving device is used to drive the powder feeding nozzle to move up and down through the moving sleeve to regulate the size of the powder spots. The method adopts path forming combining contour scanning and filling scanning when forming a thick and large workpiece whose cladding layer size exceeds the adjustment range.

Description

technical field [0001] The invention relates to a laser metal additive manufacturing method for synchronous powder feeding, in particular to a laser metal additive manufacturing device and method for automatically cooperating and controllable light spots and powder spots. Background technique [0002] Synchronous powder feeding laser metal additive manufacturing technology, as an emerging technology field in the manufacturing industry, has developed rapidly in recent years. The principle is to first generate the 3D CAD solid model of the part in the computer, and then slice the model layered according to a certain thickness, convert the 3D shape data information of the part into a series of 2D plane profile information, and then under the control of the numerical control system, The method of synchronous powder feeding laser cladding is used to fill the given two-dimensional shape point by point on a certain substrate with metal materials according to a certain filling path,...

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): B22F3/105B33Y10/00B33Y30/00
CPCB22F3/003B33Y10/00B33Y30/00B22F10/00B22F10/36B22F12/70B22F10/25B22F10/366B22F10/322B22F12/53Y02P10/25
Inventor 谭华王耿林鑫杨海欧黄卫东
Owner NORTHWESTERN POLYTECHNICAL UNIV
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