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Structural design of feeding roller of thermal forming spring coiling machine

A technology of spring coiling machine and feeding roller, which is applied in the field of spring production, can solve problems such as spring surface damage, and achieve the effects of improving production efficiency, improving cost and improving surface quality

Active Publication Date: 2022-05-27
无锡金峰园弹簧制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Once the blank 3 is pulled by the feeding roller 2, it often spreads over the entire spring surface, which will cause serious damage to the spring surface

Method used

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  • Structural design of feeding roller of thermal forming spring coiling machine
  • Structural design of feeding roller of thermal forming spring coiling machine
  • Structural design of feeding roller of thermal forming spring coiling machine

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Embodiment Construction

[0039] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0040] In this embodiment, a mechanical hot coil spring machine is used to produce a spring, and the specifications of the spring are as follows:

[0041] Spring material diameter d=Φ42mm

[0042] Spring outer diameter D 外 =Φ174mm

[0043] Spring free height H 0 =315mm

[0044] The number of spring working turns n=5.0

[0045] The total number of spring turns n1=6.5

[0046] When using feed rollers with straight and arc-shaped feed troughs, the surface of the spring produced has serious strains. More than half of the more than 200 finished springs that have been produced have serious strains and indentations, which require manual gri...

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Abstract

The invention discloses a structural design of a feeding roller of a thermal forming spring coiling machine, the feeding roller comprises an arc-shaped material groove, the arc end of the arc-shaped material groove meets the following formula: X2 / D2 + J2 / dmax < 3 > = 1, dmax is the maximum diameter size possibly occurring during coiling of a spring blank and serves as the short axis of an ellipse, D is the long axis of the ellipse, and the size of D meets the formula: D = dmax / C0Salpha, according to the feeding roller structure of the thermal forming spring coiling machine, the phenomena of spring coiling strain and indentation can be effectively relieved, the surface quality of the spring is improved, then the production efficiency is improved, and the target service life of the spring in the service process is guaranteed.

Description

technical field [0001] The invention relates to the technical field of spring production, in particular to the structural design of a feeding roller of a thermoforming spring coiling machine. Background technique [0002] Surface defects of hot coil springs are one of the main causes of early fatigue fracture of springs, so it is very important to protect the outer surface of hot coil springs during the production process. Burns and other mechanical damages in the heating process of the hot coil spring are relatively easy to prevent and control, but the tension of the heated blank by the feeding roller when coiling the spring is difficult to avoid. [0003] Now most of our hot coil spring manufacturers use the hot coil spring machine, whether it is a mechanical or two-axis CNC spring coil machine, as long as the feeding roller is non-digital program control or the coil spring machine body cannot rotate, refer to figure 1 , The common process of hot coil spring rolling is: a...

Claims

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Application Information

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IPC IPC(8): B21F23/00B21F3/02
CPCB21F23/00B21F3/02
Inventor 袁金戈孙希发张建平
Owner 无锡金峰园弹簧制造有限公司