Grinding Machine Eccentric Transverse Drive Mechanism

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Solution Overview

Problem

Conventional grinding machines with transverse moving units have complex structures and require significant time to move grinding units left and right while rotating, resulting in uneven grinding results.

Innovation Solution

A grinding machine design featuring a base with a driving unit and a grinding unit connected via a groove and slide mechanism, utilizing a second motor and eccentric unit to move the grinding unit transversely, allowing for stable and wider grinding areas.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a cam handle with multiple parts is used to drive the grinding unit to move left and right while rotating, then the grinding unit can achieve transverse movement, but the structure becomes complicated and the grinding result becomes uneven

Engineering Contradiction:

Improvetransverse movement capabilityVSAvoidstructure complexity

Core Design Contradiction:

Ease of operationVSDevice complexity

Solution Approach 1:

The patent extracts the transverse movement function from the complex cam handle mechanism and implements it separately through a motor-driven moving mechanism. The grinding unit is separated into a rotating component (driven by first motor) and a transverse moving component (driven by second motor), eliminating the need for the complicated cam handle structure while achieving the same functional result.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent segments the grinding unit into independent functional modules: a rotating mechanism driven by the first motor and a transverse moving mechanism driven by the second motor. This segmentation allows each motor to control one degree of freedom independently, simplifying the overall structure and improving grinding uniformity by eliminating the mechanical complexity of the cam handle.

Inventive Principle:

Principle #1Segmentation

2Speed

If the cam handle is driven by a motor that accelerates its rotation, then the transverse movement speed increases, but the grinding result becomes uneven

Engineering Contradiction:

Improvetransverse movement speedVSAvoidgrinding uniformity

Core Design Contradiction:

SpeedVSManufacturing precision

Solution Approach 1:

The patent replaces the mechanical cam handle acceleration mechanism with an electronically controlled motor-driven transverse moving mechanism. The second motor controls the transverse movement speed independently and uniformly, eliminating the acceleration variations inherent in cam handle mechanisms and ensuring consistent grinding quality across the workpiece surface.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Ease of manufacture

If a simple structure is used to reduce manufacturing cost and weight, then assembly and maintenance are improved, but the grinding area coverage may be limited

Engineering Contradiction:

Improvemanufacturing cost and assembly simplicityVSAvoidgrinding area coverage

Core Design Contradiction:

Ease of manufactureVSArea of stationary object

Solution Approach 1:

The patent implements a universal moving mechanism where the second motor-driven transverse moving mechanism can accommodate different grinding wheel sizes and configurations. This multi-functional design allows the same simple mechanical structure to achieve wide area coverage by adjusting the transverse movement range, rather than requiring complex mechanisms for each specific application.

Inventive Principle:

Principle #6Universality (Multi-functionality)

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

The simplified structure reduces manufacturing costs and weight, improves assembly and maintenance, and enables stable grinding with a larger and wider grinding area, accommodating objects of varying thickness and size.

Implementation Method 1

The eccentric unit includes an eccentric axle and a bearing. The eccentric axle extends through the bearing, and the bearing is located in a recess formed to the driving wheel. The driving wheel is driven by the eccentric unit of the adjustment device to move the grinding wheel set of the grinding unit transversely.

Methodology Applied

Scientific EffectEccentric mechanism: Eccentric

Data Source

PatentUS12330263B2Grinding machine with movable grinding wheels

Publication Date: 2025.06.17 YEON CHUAN MACHINERY CO LTD

AI summary

A grinding machine includes a main part and an end case. A driving unit is connected to the end case and includes a first motor which has an output shaft with a groove. A grinding unit is connected to the end case, and cantilevered above the main part. The grinding unit includes a grinding wheel set which has a central axle with a slide. The slide is located in the groove of the output shaft of the first motor. A driving wheel is connected to the central axle. An adjustment device includes a second motor which drives an eccentric unit that has an eccentric axle, and the eccentric axle extends through a bearing which is located in a recess formed to the driving wheel. The driving wheel is driven by the eccentric unit to move the grinding wheel set of the grinding unit left and right.