Multi-Die Forging Roll Geometry to Prevent Holder Interference

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Solution Overview

Problem

The existing forging roll devices with dies aligned in the circumferential direction of a roll axis face interference issues with the material holder/conveyer due to the arc-shaped outer circumferential surface, leading to potential collisions and reduced operational efficiency.

Innovation Solution

A forging roll device design where the roll axes have die attaching surfaces positioned in a circumferential direction with a planar surface configuration, creating a larger gap between the roll axes and minimizing interference with the material holder/conveyer, and incorporating an adjustment mechanism to synchronize the movement of the rolls and manipulator for precise shaping.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a plurality of dies are attached aligned in the circumferential direction of a roll axis, then shaping using multiple dies can be performed with one forging roll device, but the outer circumferential surface of the roll axis creates interference with the material holder/conveyer

Engineering Contradiction:
Improvemulti-die shaping capabilityVSAvoidinterference with material holder
Core Design Contradiction:
Adaptability or versatilityVSObject-affected harmful factors

Solution Approach 1:

The roll axis outer circumferential surface is designed with a curved surface that is closer to a planar surface than a cylindrical surface, creating increased clearance between the roll axis and the material holder/conveyer. This curvature modification allows multiple dies to be mounted in the circumferential direction while preventing interference with the material conveyance path.

Inventive Principle:
Principle #14Spheroidality (Curvature)

2Device complexity

If the outer circumferential surface of the roll axis is cylindrical, then the structure is simple, but the space between the pair of roll axes becomes small causing interference with the manipulator

Engineering Contradiction:
Improveroll axis structureVSAvoidmaterial conveyance clearance
Core Design Contradiction:
Device complexityVSEase of operation

Solution Approach 1:

Instead of using a simple cylindrical outer circumferential surface, the invention employs a curved surface that is closer to planar, which increases the clearance between the roll axis and the material holder/conveyer. This design maintains operational ease by providing sufficient space for material conveyance while still allowing multiple dies to be mounted on the roll axis.

Inventive Principle:
Principle #14Spheroidality (Curvature)

Data Source

PatentUS11453042B2Forging roll device
Publication Date: 2022.09.27 NIPPON STEEL CORPORATION
  • US11453042B2 patent drawing
  • US11453042B2 patent drawing
  • US11453042B2 patent drawing

AI summary

A forging roll device includes, a pair of roll axes which are provided so that an axis center of each of the roll axes are parallel to each other and in which a die is attached to each of the roll axes; and a material holder/conveyer which conveys a held shaping target material between the pair of roll axes, wherein, each one of the pair of roll axes includes a plurality of die attaching surfaces positioned in a circumferential direction, and an outer circumferential surface between any of two of the plurality of die attaching surfaces in each one of the pair of roll axes is closer to a planar surface than a cylindrical surface with the axis center as the center.