CN-116608981-B - Metal braided wire tension testing method and device

CN116608981BCN 116608981 BCN116608981 BCN 116608981BCN-116608981-B

Abstract

The application discloses a method and a device for testing tension of a metal braided wire, wherein the method comprises the steps of constructing a tensioning area of a braided wire in the metal braided wire, determining a guiding position, an inflection point position and a guiding-out braiding position in the tensioning area, determining a reference tension of the braided wire in the tensioning area, taking a connecting line direction between the guiding-in position and the inflection point position as a reference direction, taking the connecting line direction between the inflection point position and the guiding-out braiding position as a target direction, obtaining a target included angle between the reference direction and the target direction in a braiding mechanism, and determining the target tension according to the target included angle and the reference tension. The testing method of the tension of the metal braided wire is simple, and the corresponding tension can be accurately calculated by utilizing the inclination degree of each braided wire, so that the specific tension is represented by specific numerical values, and the tension degree of each braided wire can be accurately regulated and controlled in the process of braiding the metal braided wire.

Inventors

JIA WENBING
ZHAO YONGFU
LIU XIANGHONG
FENG YONG
GUO QIANG
WANG RUILONG
LIU XIANG
ZHOU ZIJING
AN JINCHAO
ZHANG KE
ZHU YANMIN
WU BO

Assignees

西安聚能超导线材科技有限公司

Dates

Publication Date: 20260505
Application Date: 20230529

Claims (6)

1. A method for testing tension of a metal braided wire, comprising: constructing a tensioning area of the braiding wires in the metal braiding wires, and determining a guiding-in position, an inflection point position and a guiding-out braiding position in the tensioning area; determining a reference tension of the braided wire in the tensioning region; Taking the connecting line direction between the guiding position and the inflection point position as a reference direction, and taking the connecting line direction between the inflection point position and the guiding-out knitting position as a target direction, so as to obtain a target included angle between the reference direction and the target direction in the knitting mechanism; determining a target tensioning force according to the target included angle and the reference tensioning force; The reference tension comprises a minimum tension and/or a maximum tension, wherein the minimum tension refers to the tension born by the knitting thread in the tension area when the target direction is parallel to the reference direction, and the minimum tension is measured by sequentially passing the knitting thread through a guide position A and an inflection point position B in a manner of being parallel to the reference direction, and the knitting thread still keeps parallel to the reference direction beyond the inflection point position B, and measuring the current tension of the knitting thread by using force measuring equipment to obtain the minimum tension which can be provided by the current thread shuttle frame for the knitting thread; The maximum tension force is the tension force born by the knitting yarn in the tension area when the target direction is perpendicular to the reference direction, and the maximum tension force is measured by sequentially passing the knitting yarn through a guide position A and an inflection point position B in a manner parallel to the reference direction, changing the direction of the knitting yarn outside the inflection point position B to enable the knitting yarn to be in a state perpendicular to the reference direction, and measuring the current tension force of the knitting yarn by using force measuring equipment to obtain the maximum tension force which can be provided by the current yarn shuttle frame for the knitting yarn.
2. A method of testing the tension of a metal braided wire according to claim 1, wherein the reference tension is measured using a tensiometer.
3. The method of claim 1, wherein after measuring the minimum tension, determining the target tension according to the following formula: F=f1/cosα in the above formula, F is the target tension, F1 is the minimum tension, and α is the target included angle.
4. The method of claim 1, wherein after measuring the maximum tension, determining the target tension according to the following formula: F=f2·sinα in the above formula, F is the target tensioning force, F2 is the maximum tensioning force, and α is the target included angle.
5. The method of claim 1, wherein after measuring the minimum tension and the maximum tension, determining the target tension according to the following formula: F=(f1/cosα+f2·sinα)/2 In the above formula, F is the target tension, F1 is the minimum tension, F2 is the maximum tension, and α is the target angle.
6. A metal braided wire tension testing device, comprising: A region construction module for constructing a tensioning region of the braided wire in the metal braided wire, in which a lead-in position, a inflection point position and a lead-out braided position are determined; The data acquisition module is used for determining the reference tensioning force of the knitting silk thread in the tensioning area, taking the connecting line direction between the guiding position and the inflection point position as a reference direction, and taking the connecting line direction between the inflection point position and the guiding-out knitting position as a target direction, so as to acquire a target included angle between the reference direction and the target direction in the knitting mechanism; the tensioning force calculation module is used for determining a target tensioning force according to the target included angle and the reference tensioning force; The reference tension comprises a minimum tension and/or a maximum tension, wherein the minimum tension refers to the tension born by the knitting thread in the tension area when the target direction is parallel to the reference direction, and the minimum tension is measured by sequentially passing the knitting thread through a guide position A and an inflection point position B in a manner of being parallel to the reference direction, and the knitting thread still keeps parallel to the reference direction beyond the inflection point position B, and measuring the current tension of the knitting thread by using force measuring equipment to obtain the minimum tension which can be provided by the current thread shuttle frame for the knitting thread; The maximum tension force is the tension force born by the knitting yarn in the tension area when the target direction is perpendicular to the reference direction, and the maximum tension force is measured by sequentially passing the knitting yarn through a guide position A and an inflection point position B in a manner parallel to the reference direction, changing the direction of the knitting yarn outside the inflection point position B to enable the knitting yarn to be in a state perpendicular to the reference direction, and measuring the current tension force of the knitting yarn by using force measuring equipment to obtain the maximum tension force which can be provided by the current yarn shuttle frame for the knitting yarn.

Description

Metal braided wire tension testing method and device Technical Field The application relates to the technical field of metal processing and manufacturing, in particular to a method and a device for testing tension of a metal braided wire. Background At present, the braiding of metal braided wires, in particular superconducting wires, is mostly accomplished based on a braiding mechanism as shown in fig. 1, in which each braided wire is fed and tensioned based on a shuttle frame as shown in fig. 2 and 3, wherein the degree of tensioning of the braided wires is an important factor affecting the surface quality of the formed wire. In the prior art, operators mostly measure the tension of the braided wires at all positions according to professional theoretical knowledge and actual working experience, and the problems of poor tension precision, higher operation threshold and the like exist, so that the forming quality of the metal braided wires is limited. Disclosure of Invention The embodiment of the application provides a method and a device for testing the tension of a metal braided wire, which are used for solving the problems that in the prior art, an operator measures the tension of braided wires at all positions according to professional theoretical knowledge and actual working experience, and the tension precision is poor and the operation threshold is high. In one aspect, an embodiment of the present application provides a method for testing a tension of a metal braided wire, including: Constructing a tensioning area of a braiding wire in the metal braiding wire, and determining a guiding-in position, an inflection point position and a guiding-out braiding position in the tensioning area; Determining a reference tension of the braided wire in the tensioning region; Taking the connecting line direction between the leading-in position and the inflection point position as a reference direction, and taking the connecting line direction between the inflection point position and the leading-out knitting position as a target direction, so as to obtain a target included angle between the reference direction and the target direction in the knitting mechanism; And determining the target tensioning force according to the target included angle and the reference tensioning force. In another aspect, an embodiment of the present application provides a device for testing tension of a metal braided wire, including: the region construction module is used for constructing a tensioning region of the braided wire in the metal braided wire, and determining a guiding-in position, an inflection point position and a guiding-out braided position in the tensioning region; The data acquisition module is used for determining the reference tensioning force of the braiding wires in the tensioning area, taking the connecting line direction between the leading-in position and the inflection point position as a reference direction, and taking the connecting line direction between the inflection point position and the leading-out braiding position as a target direction, so as to acquire a target included angle between the reference direction and the target direction in the braiding mechanism; And the tension calculation module is used for determining the target tension according to the target included angle and the reference tension. The method and the device for testing the tension of the metal braided wire have the following advantages: The testing method of the tension of the metal braided wire is simple, and the corresponding tension can be accurately calculated by utilizing the inclination degree of each braided wire, so that the specific tension is represented by specific numerical values, and the tension degree of each braided wire can be accurately regulated and controlled in the process of braiding the metal braided wire. Drawings In order to more clearly illustrate the embodiments of the application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art. FIG. 1 is a schematic diagram of a prior art knitting mechanism; FIG. 2 is a schematic diagram of a prior art weave pattern of a shuttle frame; FIG. 3 is a schematic view of a prior art shuttle frame; FIG. 4 is a flowchart of a method for testing tension of a metal braided wire according to an embodiment of the present application; FIG. 5 is a schematic diagram of a measured minimum tension provided by an embodiment of the present application; Fig. 6 is a schematic diagram of measuring maximum tension provided by an embodiment of the present application. Detailed Description The following description of the embodiments of the present application w