Vertical Oscillation for Uniform Casting Hardening

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Solution Overview

Problem

Existing oscillating devices for hardening castings, such as vehicle wheels, concentrate the collision of hardening materials at the lower portion due to gravity, requiring repetitive repositioning and prolonged treatment times to achieve uniform mechanical properties.

Innovation Solution

A vertically oscillating working device with an oscillating mechanism that includes a prime mover, revolving shaft, crank, connecting rod, and oscillating plate, converting rotary motion into vertical reciprocation, allowing for uniform collision of hardening materials with the casting surface without repositioning, using steel balls as working materials.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If horizontal oscillation is used to harden castings, then the oscillating mechanism can be simple, but the collision of hardening materials concentrates at the lower portion due to gravity, requiring repetitive repositioning and increasing treatment time

Engineering Contradiction:

Improveoscillating mechanism complexityVSAvoidtreatment time

Core Design Contradiction:

Device complexityVSLoss of time

Solution Approach 1:

The patent inverts the conventional horizontal oscillation approach by implementing vertical oscillation instead. This inversion changes the direction of gravitational effect on hardening materials, allowing them to be uniformly distributed throughout the inner space during oscillation, thereby eliminating the need for repetitive repositioning and reducing treatment time while maintaining mechanism simplicity

Inventive Principle:

Principle #13The other way round (Inversion)

2Device complexity

If horizontal oscillation is used to harden castings, then the oscillating mechanism can be simple, but the mechanical properties are not uniformly imparted to the casting, requiring multiple repositioning operations

Engineering Contradiction:

Improveoscillating mechanism complexityVSAvoiduniformity of mechanical properties

Core Design Contradiction:

Device complexityVSManufacturing precision

Solution Approach 1:

By inverting the oscillation direction from horizontal to vertical, the patent ensures that hardening materials are uniformly distributed in the inner space during oscillation. This uniform distribution allows mechanical properties to be evenly imparted to all portions of the casting in a single operation, eliminating the need for repetitive repositioning and achieving uniform treatment throughout the casting

Inventive Principle:

Principle #13The other way round (Inversion)

3Ease of operation

If the casting is oscillated horizontally with hardening materials, then gravity causes materials to concentrate at the lower portion, but changing the oscillation direction to vertical resolves this concentration issue

Engineering Contradiction:

Improveoperation simplicityVSAvoiduniformity of hardening material distribution

Core Design Contradiction:

Ease of operationVSManufacturing precision

Solution Approach 1:

The patent applies vertical oscillation instead of horizontal oscillation, inverting the conventional approach. This inversion fundamentally changes how gravity affects the hardening materials during oscillation, transforming them from concentrating at the lower portion (horizontal oscillation) to being uniformly distributed throughout the inner space (vertical oscillation), thereby achieving both operational simplicity and uniform hardening

Inventive Principle:

Principle #13The other way round (Inversion)

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

Enables uniform imparting of mechanical properties to castings by preventing gravity-induced concentration of collisions, reducing treatment time and maintaining equipment burden, while correcting defects like pin holes and improving surface integrity.

Implementation Method 1

an oscillating mechanism having a prime mover 36, a revolving shaft 40, a crank 38, a connecting rod 41, and an oscillating plate 42, in which a rotary motion given by the prime mover 36 is converted to vertical motion by a crank 38 fitted to a revolving shaft 40, and the oscillating plate 42 connected with the crank 38 reciprocates vertically along linear motion guides 43a to 43d

Methodology Applied

Scientific EffectCrank mechanism: Crankshaft

Implementation Method 2

if the method for hardening of a casting disclosed in Patent Document 2 is carried out using the oscillating device, the position at which the hardening materials collide with a casting is inevitably concentrated at the lower portion of a casting by gravity

Methodology Applied

Scientific EffectGravitation: Gravitation

Implementation Method 3

works the body to be worked by colliding the working materials with the body to be worked by the oscillating

Methodology Applied

Scientific EffectImpact force: Impact Force

Data Source

PatentUS7685855B2Vertically shaking working device

Publication Date: 2010.03.30 ASAHI TEC CORP

AI summary

A vertically oscillating working device 2 has a body to be oscillated 23 having an inner space that is formed by a cover member 21 and a vehicle wheel 22, which is a body to be worked, and receives working materials 25 in it and also has oscillating means for vertically oscillating the body to be oscillated 23. The working materials 25 are allowed to collide with the vehicle wheel 22 by the oscillation, and thereby the vehicle wheel 22 is worked. With the working device 2, a casting can be oscillated together with hardening materials, and excellent mechanical properties can be uniformly added to a predetermined portion of the casting by the oscillation without changing the position of the casting.