Forming method of uneven high-precision laser additives

A laser additive and high-precision technology, which is applied in the field of additive manufacturing, can solve the problems of low surface flatness, surface precision and quality degradation, powder bonding of formed parts, etc., and achieve good surface flatness and continuous working time. Effect of long and surface precision repair

Active Publication Date: 2018-06-01
NANJING UNIV OF SCI & TECH
View PDF10 Cites 22 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Since the arc cladding process is very complicated, there are many influencing factors, and there are various problems and deficiencies
At present, there are four main problems in the arc cladding technology: (1) During the cladding process, the powder sprayed from the nozzle will not all enter the laser molten pool, and the powder will bond on the surface of the formed part, and the surface accuracy and quality will be affected. decline
(2) The

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
  • Forming method of uneven high-precision laser additives
  • Forming method of uneven high-precision laser additives
  • Forming method of uneven high-precision laser additives

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The non-flat surface high-precision laser additive forming method in this embodiment is based on laser additive manufacturing technology, and the laser repair processing technology is connected with the industrial controller through the laser displacement sensor. The main devices include: laser additive manufacturing system, ZLDS113 laser Displacement sensor, ST-D-MF20 laser processing machine, industrial controller, tilting rotary positioner and computer. combine figure 2 , the method specifically includes the following steps:

[0036] Step 1. The cmt arc additive manufacturing system is used to manufacture parts, that is, the three-dimensional model of the computer component is input into the robot control system for additive manufacturing;

[0037] Step 2, drive the laser displacement sensor to scan back and forth on the surface of the laser additive molded part (such as figure 2 In 2) outline, the displacement sensor used is a ZLDS113 laser displacement sensor, ...

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 forming method of uneven high-precision laser additives. The method comprises the steps of forming additives by adopting an arc heat source; driving a laser displacement sensor to scan the surface profile of an additive forming piece, and calculating the surface accuracy of a workpiece according to the deviation of measured values of the sensor; inputting the accuracy into a modeled controller, and reconstructing a surface model of a part by the controller, so that the difference with the original surface accuracy is obtained, repair parameters of different areas in the surface of the part are determined, and control measures are sent; and inputting the repair parameters into a robot control cabinet, and applying laser heat sources with different energy and frequency to the different areas in the surface of the workpiece by the control cabinet according to the repair parameters. After repair, the laser displacement sensor is driven again so as to scan the surface profile, whether the repaired workpiece reaches the standard is determined, and if the repaired workpiece does not reach the standard, the workpiece is repaired again until the workpiece reaches the standard. According to the method, the surface accuracy of a laser additive member can be effectively increased, so that the quality of the laser additive forming piece is increased.

Description

technical field [0001] The invention belongs to the technical field of additive manufacturing, in particular to a high-precision laser additive forming method for non-flat surfaces. Background technique [0002] In recent years, with the rapid development of computer level, laser cladding technology has been widely used in the field of manufacturing. Combining technologies such as numerical control, computer-aided design, and material science, laser cladding has the advantages of short manufacturing cycle and simple processing technology. An "additive" manufacturing method, which directly, quickly and flexibly converts design ideas into parts with certain functions. Laser cladding technology can form a near-net shape of three-dimensional arbitrary shape high-performance metal by means of powder feeding or wire feeding. [0003] Because the arc cladding process is very complex and has many influencing factors, there are also various problems and deficiencies. At present, th...

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): B23K26/342B23K26/348B33Y10/00
CPCB23K26/342B23K26/348B33Y10/00Y02P10/25
Inventor 王克鸿彭雪周琦彭勇许华银唐燕生钱美霞吴成成
Owner NANJING UNIV OF SCI & TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products