Coiling machine, method for manufacturing coil spring, and coil spring
US-11964321-B2 · Apr 23, 2024 · US
Coiling machine and manufacturing method of coil spring
US10556265B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10556265-B2 |
| Application number | US-201715686849-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 25, 2017 |
| Priority date | Feb 26, 2015 |
| Publication date | Feb 11, 2020 |
| Grant date | Feb 11, 2020 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
A coiling machine includes a material guide, first pin, second pin, pitch tool, cutting tool, heating device, temperature sensor, and controller. A material is bent between the first pin and the second pin to form an arc part between the first pin and the second pin. The controller select control data corresponding to the temperature of the material from a plurality of control data corresponding to a processing temperature. Then, the positions of the first pin and the second pin are controlled such that a radius of curvature of the arc part increases when the temperature of the material increases, and the position of the cutting tool is controlled such that a gap between the center of curvature of the arc part and the cutting tool increases.
First claim
Opening claim text (preview).
What is claimed is: 1. A coiling machine comprising: a material guide to which a material of a coil spring is inserted, the material guide having a tip from which the material is discharged; a first pin which contacts the material discharged from the tip of the material guide; a second pin disposed in a front side of a movement direction of the material with respect to the first pin, the second pin and the first pin bending the material into an arc shape; a pitch tool disposed in a front side of a movement direction of the material with respect to the second pin, the pitch tool contacting the material; a cutting tool which cuts the material, the cutting tool including a movable blade and a receiving blade; an actuator which changes a position of the receiving blade of the cutting tool; a heating device which heats the material; a temperature sensor which detects a temperature of the material; and a controller which changes a position of the first pin and a position of the second pin based on control data corresponding to a shape of a coil spring to be formed, wherein the first pin and the second pin are moved such that a radius of curvature of the arc shape increases when the temperature of the material detected by the temperature sensor increases, and the receiving blade of the cutting tool is moved by the actuator such that a gap between a center of curvature of the arc shape and the receiving blade of the cutting tool increases when the temperature of the material increases.
Assignees
Inventors
Classifications
Making springs from wire · CPC title
springs · CPC title
- B21F3/06Primary
internally on a hollow form · CPC title
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Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US10556265B2 cover?
- A coiling machine includes a material guide, first pin, second pin, pitch tool, cutting tool, heating device, temperature sensor, and controller. A material is bent between the first pin and the second pin to form an arc part between the first pin and the second pin. The controller select control data corresponding to the temperature of the material from a plurality of control data correspondin…
- Who is the assignee on this patent?
- Nhk Spring Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification B21F3/06. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Feb 11 2020 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 6 related publications on this page (citations in our corpus or others sharing the same primary CPC).