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Stress breaking process of automatic spring coiler for spring wires

A technology of spring steel wire and spring coiling machine is applied in the field of disconnection after the forming process of automatic spring coiling machine, which can solve the problems of linear deviation of spring force value, verticality, large closing force of spring support ring, and out-of-control spring precision, so as to avoid The effect of dimension deviation, reducing use intensity and ensuring production quality

Active Publication Date: 2016-10-26
陶胜治
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The traditional way of cutting the spring is to produce it after cutting. The closing force of the spring support ring is too large. The end of the spring will be larger than the spring body. Due to the change of the impact force, the size of the spring end will also change accordingly, which will lead to the loss of control of the spring precision.
At the same time, if the closing force of the spring is insufficient, there will be gaps at the end of the spring, which will lead to linear deviation of the spring force value and out-of-tolerance verticality

Method used

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  • Stress breaking process of automatic spring coiler for spring wires
  • Stress breaking process of automatic spring coiler for spring wires
  • Stress breaking process of automatic spring coiler for spring wires

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Such as figure 1 and figure 2 As shown, a spring steel wire automatic spring coiling machine stress breaking process, after the spring wire is formed by the automatic spring coiling machine, an auxiliary core 3 is set on the inner circumference of the spring, and a tool 2 located on the outer circumference of the spring is used to process a spring steel wire. At the stress concentration point 1, then the spring rotates at an angle of 90°, and the tool 2 is pressed against the spring, and the tool 5 set on the outer circumference of the spring is moved upwards, that is, an inward breaking external force is applied on the outer circumference of the spring, and the breaking external force makes the spring diameter The spring is bent and broken at the stress concentration point 1.

Embodiment 2

[0039] Such as figure 1 and image 3 As shown, a spring steel wire automatic spring coiling machine stress breaking process, after the spring wire is formed by the automatic spring coiling machine, an auxiliary core 3 is set on the inner circumference of the spring, when the tool 2 on the outer circumference of the spring processes the stress concentration point on the spring steel wire 1. The auxiliary core 3 plays a supporting role on the inner circumference of the spring to prevent the spring from being squeezed under force, and then the spring is rotated at an angle of 90°, and the modified auxiliary breaking tool 7 is used to hold the spring, and the dragging frame 5 is used to pair the outer spring The circumference exerts an inward breaking force, causing the spring to bend and break at the stress concentration point 1.

[0040] Compared with Embodiment 1, this embodiment adopts a modified auxiliary breaking tool 7 to replace the cutter 2, thereby ensuring that there i...

Embodiment 3

[0042] Such as Figure 4 and Figure 5 As shown, a spring steel wire automatic spring coiling machine stress breaking process, the spring wire is formed on the automatic spring coiling machine, to the cutting position, the core knife 4 is set on the inner circumference of the spring, the knife 2 and the core knife 4 are placed inside and outside the spring Process two indentations on the circumference and act on one stress concentration point 1, pull out the core knife 4, feed the material 180 degrees, and then clamp the breaking tool 6 on the outer circumference of the spring, and fix one end of the clamping and breaking tool 6 against the spring , the other end exerts an inward breaking external force, and the breaking external force makes the spring radially stressed, acting on the stress concentration point 1, so that the spring is bent and broken at the stress concentration point 1.

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Abstract

The invention relates to a stress breaking process of an automatic spring coiler for spring wires, after a spring wire is formed on the automatic spring coiler, a tool is used at a position where a spring is to be cut off to process at least one stress concentration point for the spring wire, and external breaking force that is inward is applied to the outer periphery of the spring or external breaking force that is outward is applied to the inner periphery of the spring such that the spring wire breaks at the stress concentrating points. The process prevents end collision and enables stability of operation, improved processing precision and production efficiency of the automatic spring coiler and greatly reduced production cost of coil springs, the bottleneck problem in the wide application of spring wires such as high-hardness spring wires and deformed spring wires is solve, and the process of coiling high-hardness spring deformed wires by the automatic spring coiler is turned into a stable and reliable process.

Description

technical field [0001] The invention relates to a stress breaking process of a spring steel wire automatic spring coiling machine, which is used for the disconnection method after the forming process of the automatic spring coiling machine. Background technique [0002] When the existing automatic spring coiling machine produces springs, the methods adopted for cutting the steel wire include straight cutting, pendulum cutting, halved cutting or twisted cutting. It is a cutting method that directly acts on the spring wire with the cutting edge of the spring coiling machine, which has a large extrusion stress on the cutting edge of the spring coiling machine, resulting in frequent damage and replacement of the cutting tool, and easy damage to the cutting and mechanical mechanism of the spring coiling machine , leading to high costs and low productivity. Twist cutting is a relatively efficient cutting method, which is characterized by forming stress concentration indentations ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21F11/00
CPCB21F11/005
Inventor 陶胜治
Owner 陶胜治
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