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Length control method of flared catheter based on digital manufacturing

A control method and catheter technology, which are applied in the fields of electrical digital data processing, design optimization/simulation, special data processing applications, etc., can solve the problems of inability to accurately control the length of the catheter, complicated modeling process of the flared catheter, etc., to simplify the design and construction. mold process, improve preparation efficiency, and control the effect of length

Active Publication Date: 2018-12-21
CHENGDU AIRCRAFT INDUSTRY GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the existing flaring catheter design modeling process is complex, the manufacturing process can not accurately control the length of the catheter, etc., the present invention proposes a method for controlling the length of the flared catheter based on digital manufacturing

Method used

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  • Length control method of flared catheter based on digital manufacturing

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A method for controlling the length of a flaring catheter based on digital manufacturing, comprising the following steps:

[0028] Step 1, specify the modeling method of flared catheter end for digital manufacturing, refer to figure 1 Carry out flaring conduit design modeling, the flare model of the conduit end is not established during modeling, so that the conduit end is flush with the end surface of the threaded joint;

[0029] Step 2, refer to figure 1 Define the flare compensation amount A of the conduit, and determine the flare compensation amount of conduits of different materials and specifications through finite element simulation and flare tests, and form a process parameter table as a process control amount for the manufacture of flared conduits.

[0030] Step three, refer to figure 1 , define the flare shrinkage of the conduit, and determine the flare shrinkage of conduits of different materials and specifications through experiments to form a process para...

Embodiment 2

[0046] The material is LF2, the outer diameter is 34mm, the wall thickness is 1mm, the length of the design modeling catheter is L1=450mm, and the catheter with single-end flare is taken as an example:

[0047] Step 1, refer to figure 1 Design modeling is carried out, and the design length of the conduit is L1=450.00mm.

[0048] Step 2, look up in the process parameter table, the material is LF2, the outer diameter is 34mm, and the wall thickness is 1mm, the catheter flaring compensation amount A=8.72mm, and the catheter flaring shrinkage amount L’=2.32mm.

[0049] Step three, refer to figure 1 , extract the design modeling conduit length L1, increase the conduit flaring compensation amount A at the end of the conduit, and obtain L2, that is, L2=L1+A=450.00mm+8.72mm=458.72mm.

[0050] Step 4, refer to figure 1 , carry out flaring processing on the catheter after increasing the flaring compensation amount, and obtain the length L3 of the catheter after flaring.

[0051] Ste...

Embodiment 3

[0054] The material is 1Cr18Ni9Ti, the outer diameter is 18mm, the wall thickness is 1mm, the design modeling conduit length L1=450mm, and the single-end flared conduit is an example:

[0055] Step 1, refer to figure 1 Design modeling is carried out, and the design length of the conduit is L1=450.00mm.

[0056] Step 2, look up in the process parameter table, the material is 1Cr18Ni9Ti, the outer diameter is 18mm, and the wall thickness is 1mm.

[0057] Step three, refer to figure 1 , extract the design modeling conduit length L1, increase the conduit flaring compensation amount A at the end of the conduit, and obtain L2, that is, L2=L1+A=450.00mm+4.98mm=454.98mm.

[0058] Step 4, refer to figure 1 , carry out flaring processing on the catheter after increasing the flaring compensation amount, and obtain the length L3 of the catheter after flaring.

[0059] Step 5, use the laser vector measuring machine to measure, and get the actual length L3=453.69mm after the catheter is...

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Abstract

The invention discloses a flared catheter length control method based on digital manufacturing, which provides a flared catheter end modeling method oriented to digital manufacturing, simplifies the flared catheter design modeling process, and improves the flared catheter modeling efficiency. Defined the flare compensation, and through the finite element simulation and flare test, determined the flare compensation of different materials, different specifications of the pipe, formed the process parameter table, as the process control of the flare pipe manufacturing, improve the flare pipe manufacturing process preparation efficiency, can improve the processing quality of the flare pipe, effectively control the length of the flare pipe; The shrinkage of the tube flared is determined, and theshrinkage of the tube flared with different materials and specifications is determined by experiments, and the technological parameter table is formed, which is convenient for the measurement and inspection by the laser vector measuring machine after the tube flared is finished.

Description

technical field [0001] The invention relates to the field of catheter manufacturing, in particular to a method for controlling the length of flared catheters based on digital manufacturing. Background technique [0002] On December 3, 2008, the State Intellectual Property Office published an invention patent with the application number CN200710049224.1 titled Extruded Flareless Combined Catheter Tip Manufacturing Technology, which disclosed an extruded non-flare combined Catheter tip manufacturing techniques. The non-flare combined catheter end refers to the structure in which the sleeve is sealed and connected to the catheter end. The extrusion forming technology of the end of the non-flare catheter is to use the expansion of the rubber sleeve of the tie rod assembly and the assembly tool to extrude the pipe wall of the catheter into the ring groove of the sleeve, and multiple processes such as forming, testing, and testing The process parameters of the link, this technol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F2119/18G06F30/23G06F30/17
Inventor 寸文渊赵正大张晶舒阳黄光强
Owner CHENGDU AIRCRAFT INDUSTRY GROUP
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