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CN-121997662-A - Method and equipment for designing curve hole of bare copper wire drawing die

CN121997662ACN 121997662 ACN121997662 ACN 121997662ACN-121997662-A

Abstract

The application is applicable to the technical field of industrial robots, in particular to a method and equipment for designing a curve hole of a wire drawing die of a bare copper wire, wherein the method comprises the steps of obtaining initial diameter, target diameter and material parameters of the bare copper wire; the method comprises the steps of obtaining an inlet area parameter of a wire drawing die based on an initial diameter of a bare copper wire and a friction coefficient of the copper wire, determining a reducing area parameter of the wire drawing die based on an inlet area angle, an inlet area length, a target diameter and a material plasticity parameter of the bare copper wire, determining an outlet area parameter of the wire drawing die based on the reducing area parameter of the wire drawing die and the rebound coefficient of the copper wire, constructing a curve type hole outline equation set of the wire drawing die according to the inlet area parameter, the reducing area parameter, the target sizing area parameter and the outlet area parameter, and designing a curve type hole of the wire drawing die of the bare copper wire based on the curve type hole outline equation set. The method can solve the problem that the wire breakage rate is high due to mismatching of the material and the curve type hole parameters.

Inventors

  • MA QIANG

Assignees

  • 江西津桓新材料有限公司

Dates

Publication Date
20260508
Application Date
20260127

Claims (10)

  1. 1. The method for designing the curve hole of the bare copper wire drawing die is characterized by comprising the following steps of: obtaining initial diameter, target diameter and material parameters of a bare copper wire, wherein the material parameters comprise material plasticity parameters, copper wire rebound coefficient and copper wire friction coefficient of the bare copper wire; Obtaining an inlet area parameter of a wire drawing die based on the initial diameter of the bare copper wire and the friction coefficient of the copper wire, wherein the inlet area parameter is used for reflecting an inlet area angle and an inlet area length; determining a diameter reduction zone parameter of the wire drawing die based on the inlet zone angle, the inlet zone length, the target diameter, and the material-plasticity parameter of the bare copper wire; Determining an outlet area parameter of the wire drawing die based on the diameter reduction area parameter of the wire drawing die and the copper wire coefficient of restitution; constructing a curve hole outline equation set of the wire drawing die according to the inlet area parameter, the reducing area parameter, the target sizing area parameter and the outlet area parameter, wherein the curve hole outline equation set is a multi-section equation set; And designing the curve type hole of the wire drawing die of the bare copper wire based on the curve type hole outline equation set.
  2. 2. The method for designing a curve hole of a wire drawing die for a bare copper wire according to claim 1, wherein the obtaining of the inlet area parameter of the wire drawing die based on the initial diameter of the bare copper wire and the coefficient of friction of the copper wire comprises: determining an inlet area angle of a wire drawing die based on the copper wire friction coefficient of the bare copper wire; obtaining an inlet zone length of the wire drawing die based on the initial diameter of the bare copper wire and the inlet zone angle of the wire drawing die; and obtaining an inlet region parameter based on the inlet region angle and the inlet region length of the wire drawing die.
  3. 3. The bare copper wire drawing die curvilinear hole design method according to claim 2, wherein the determining the angle of the inlet zone of the drawing die based on the copper wire friction coefficient of the bare copper wire comprises: Extracting characteristics of the copper wire friction coefficient of the bare copper wire to obtain a copper wire friction coefficient grade of the bare copper wire; And determining the angle of the inlet area of the wire drawing die based on the copper wire friction coefficient grade and a preset angle interval of the inlet area.
  4. 4. The method of designing a curvilinear hole for a wire drawing die for bare copper wire according to claim 1, wherein the determining the diameter-reducing region parameter of the wire drawing die based on the inlet region angle, the inlet region length, the target diameter and the material-plasticity parameter of the bare copper wire comprises: determining the angle of a reducing area of the wire drawing die according to the angle of the inlet area, the length of the inlet area and the material-plasticity parameters of the bare copper wire; And determining the diameter reducing region parameters of the wire drawing die based on the diameter reducing region angle of the wire drawing die and the target diameter.
  5. 5. The method for designing a curvilinear hole for a wire drawing die for bare copper wire according to claim 4, wherein the determining the diameter reducing region parameter of the wire drawing die based on the diameter reducing region angle of the wire drawing die and the target diameter comprises: Obtaining the effective length of a reducing area of the wire drawing die according to the angle of the reducing area of the wire drawing die, the inlet diameter of the reducing area and the target diameter, wherein the inlet diameter of the reducing area is obtained by geometric conversion of the length of the inlet area and the angle of the inlet area; And determining parameters of the reducing area according to the effective length of the reducing area of the wire drawing die and the target diameter.
  6. 6. The method of designing a curvilinear hole of a bare copper wire drawing die according to claim 1, wherein the determining of the outlet area parameter of the drawing die based on the diameter reduction area parameter of the drawing die and the copper wire coefficient of restitution comprises: Obtaining an initial value of an outlet area angle of the wire drawing die based on the diameter reduction area parameter of the wire drawing die and the copper wire rebound coefficient; Determining the length of an outlet area of the wire drawing die based on the initial value of the angle of the outlet area; And determining the outlet region parameters of the wire drawing die according to the outlet region angle initial value and the outlet region length.
  7. 7. The method for designing a curve hole for a wire drawing die for bare copper wire according to claim 6, wherein the determining the length of the outlet area of the wire drawing die based on the initial value of the angle of the outlet area comprises: Dividing intervals according to the initial value of the angle of the outlet area and matching outlet proportionality coefficients, wherein the outlet proportionality coefficients are the ratio of the length of the outlet area to the effective length of the reducing area; obtaining an initial value of the length of the outlet area based on the outlet proportionality coefficient and the effective length of the reducing area; and determining the length of the outlet area of the wire drawing die based on the initial value of the length of the outlet area, the coefficient of resilience of the copper wire and a preset coefficient of resilience correction.
  8. 8. The method for designing a curve hole of a bare copper wire drawing die according to claim 1, wherein the constructing a curve hole profile equation set of the drawing die according to the inlet region parameter, the reducing region parameter, the target sizing region parameter, and the outlet region parameter comprises: establishing a die hole type coordinate system by taking a central symmetry point of a cross section of the wire drawing die as an origin; Obtaining a plurality of functional section equations according to the inlet area parameters, the diameter reduction area parameters, the target sizing area parameters, the outlet area parameters and the die hole type coordinate system, wherein the functional section equations comprise an inlet area curve equation, a diameter reduction area curve equation, a sizing area equation and an outlet area equation; And constructing a curve type hole outline equation set of the wire drawing die based on the inlet area curve equation, the reducing area curve equation, the sizing area equation and the outlet area equation.
  9. 9. The method for designing a curve hole for a wire drawing die for bare copper wire according to claim 8, wherein the constructing a set of curve hole profile equations for the wire drawing die based on the entry zone curve equation, the reducing zone curve equation, the sizing zone equation, and the exit zone equation comprises: Determining a linking continuity value of each function segment equation based on the entry zone curve equation, the reducing zone curve equation, the sizing zone equation and the exit zone equation, wherein the linking continuity value is a characteristic parameter for quantifying geometric continuity of two adjacent function segment equations at a linking point; Obtaining a plurality of function segment correction equations based on the entry zone curve equation, the reducing zone curve equation, the sizing zone equation, the exit zone equation, and the joined continuous values of each of the function segment equations; And constructing a curve type hole outline equation set of the wire drawing die according to the function segment correction equations.
  10. 10. The curve hole design system of the bare copper wire drawing die is characterized by comprising: The device comprises an acquisition unit, a control unit and a control unit, wherein the acquisition unit is used for acquiring the initial diameter, the target diameter and the material parameters of the bare copper wire, wherein the material parameters comprise the material plasticity parameters, the copper wire rebound coefficient and the copper wire friction coefficient of the bare copper wire; the inlet unit is used for obtaining inlet zone parameters of the wire drawing die based on the initial diameter of the bare copper wire and the friction coefficient of the copper wire, wherein the inlet zone parameters reflect the angle and the length of the inlet zone; A reducing unit for determining a reducing region parameter of the wire drawing die based on the inlet region parameter, the target diameter, and the material-plastic parameter of the bare copper wire; An outlet unit for determining an outlet zone parameter of the wire drawing die based on the reduced zone parameter of the wire drawing die and the copper wire coefficient of restitution; The system comprises an equation unit, a drawing die, a wire drawing unit and a wire drawing unit, wherein the equation unit is used for constructing a curve type hole outline equation set of the drawing die according to the inlet area parameter, the diameter reduction area parameter, the target sizing area parameter and the outlet area parameter, wherein the curve type hole outline equation set is a multi-section equation set; and the design unit is used for designing the curve type hole of the wire drawing die of the bare copper wire based on the curve type hole outline equation set.

Description

Method and equipment for designing curve hole of bare copper wire drawing die Technical Field The application belongs to the technical field of metal plastic processing, and particularly relates to a method and equipment for designing a curve hole of a bare copper wire drawing die. Background The wire drawing die has wide application, such as high-precision wires used in electronic devices, radars, televisions, instruments, aerospace and the like, and common tungsten wires, molybdenum wires, stainless steel wires, wire and cable wires and various alloy wires are drawn by the wire drawing die. The traditional wire drawing die design method does not relate plastic parameters, rebound coefficients and hole type parameters, adopts uniform parameters to adapt to all materials, is easy to generate excessive deformation of a high-plastic copper wire, has large size rebound quantity of a high-rebound copper wire finished product, and has the problem that the materials are not matched with the curve type hole parameters, so that the wire breakage rate is high. Disclosure of Invention The embodiment of the application provides a method and equipment for designing a curve hole of a bare copper wire drawing die, which can solve the problem that the wire breakage rate is high due to mismatching of materials and curve hole parameters. In a first aspect, an embodiment of the present application provides a method for designing a curve hole of a bare copper wire drawing die, including: obtaining initial diameter, target diameter and material parameters of a bare copper wire, wherein the material parameters comprise material plasticity parameters, copper wire rebound coefficient and copper wire friction coefficient of the bare copper wire; obtaining an inlet area parameter of a wire drawing die based on the initial diameter of the bare copper wire and the friction coefficient of the copper wire, wherein the inlet area parameter reflects an inlet area angle and an inlet area length; determining a diameter reduction zone parameter of the wire drawing die based on the inlet zone angle, the inlet zone length, the target diameter, and the material-plasticity parameter of the bare copper wire; Determining an outlet area parameter of the wire drawing die based on the diameter reduction area parameter of the wire drawing die and the copper wire coefficient of restitution; Constructing a curve hole outline equation set of the wire drawing die according to the inlet area parameter, the reducing area parameter, the target sizing area parameter and the outlet area parameter, wherein the curve hole outline equation set is a multi-section equation set; And designing the curve type hole of the wire drawing die of the bare copper wire based on the curve type hole outline equation set. The technical scheme provided by the embodiment of the application at least has the following technical effects: The method for designing the curve hole of the bare copper wire drawing die comprises the steps of obtaining initial diameter, target diameter and material parameters of a bare copper wire, wherein the material parameters comprise material plasticity parameters of the bare copper wire, copper wire rebound coefficients and copper wire friction coefficients, obtaining inlet area parameters of the wire drawing die based on the initial diameter and the copper wire friction coefficients of the bare copper wire, wherein the inlet area parameters reflect inlet area angles and inlet area lengths, determining reducing area parameters of the wire drawing die based on the inlet area angles, the inlet area lengths, the target diameter and the material plasticity parameters of the bare copper wire, determining outlet area parameters of the wire drawing die based on the reducing area parameters of the wire drawing die and the copper wire rebound coefficients, and constructing a curve hole profile equation set of the wire drawing die according to the inlet area parameters, the reducing area parameters, the target sizing area parameters and the outlet area parameters, wherein the curve hole profile equation set comprises preset area lengths and preset area diameter sizing tolerance, the diameter sizing area diameters are equal to the target diameter, and the curve hole profile equation set is used for designing the curve hole of the wire drawing die of the bare copper wire. According to the application, the initial diameter, the target diameter and the material parameters of the bare copper wire are obtained, the material parameters of the bare copper wire are systematically considered, the inlet area parameter, the reducing area parameter, the target sizing area parameter and the outlet area parameter corresponding to the material parameters are obtained, the curve hole outline equation set of the wire drawing die is constructed based on the inlet area parameter, the reducing area parameter, the target sizing area parameter and the outlet area parameter, and final