Opposed Multi-Piston Hydraulic Pressing for Balanced Hub Production

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Solution Overview

Problem

Existing hydraulic press equipment for automobile hubs is heavy, expensive, and inefficient in production, with a lack of clear connection methods for main cylinder devices to support assemblies.

Innovation Solution

A hydraulic machine with a main cylinder device featuring multiple piston rods arranged oppositely to form a hydraulic chamber, which changes spatially to drive the piston rods towards or away from each other, and a support assembly with sliding rails for connection, allowing for efficient pressing mechanisms and improved structural stability.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Weight of moving object

If traditional hydraulic press equipment is used for automobile hub production, then the equipment can perform pressing operations, but the equipment becomes heavy and expensive

Engineering Contradiction:
Improveequipment weightVSAvoidproduction efficiency
Core Design Contradiction:
Weight of moving objectVSProductivity

Solution Approach 1:

The hydraulic press equipment is divided into modular components including multiple main cylinder devices, support assemblies with sliding rails, and worktable assemblies. Each module can be independently configured and combined, allowing the system to achieve high productivity through parallel processing of multiple workpieces while maintaining reduced weight through optimized component selection and arrangement.

Inventive Principle:
Principle #1Segmentation

2Ease of manufacture

If traditional hydraulic press equipment is used, then pressing operations can be performed, but the equipment becomes complicated in manufacturing

Engineering Contradiction:
Improvemanufacturing complexityVSAvoidequipment complexity
Core Design Contradiction:
Ease of manufactureVSDevice complexity

Solution Approach 1:

The support assembly with sliding rails and the main cylinder devices are designed as universal components that can be applied across different pressing configurations and worktable arrangements. The standardized interface and modular design enable these components to serve multiple functions in various production scenarios, significantly reducing manufacturing complexity while maintaining equipment capability.

Inventive Principle:
Principle #6Universality (Multi-functionality)

3Productivity

If traditional hydraulic press equipment is used, then single workpiece pressing can be achieved, but production efficiency remains low

Engineering Contradiction:
Improveproduction efficiencyVSAvoidequipment complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

Multiple main cylinder devices are combined with a single support assembly and worktable system, enabling simultaneous pressing of multiple workpieces in parallel. The sliding rail mechanism coordinates the movement of multiple cylinders, achieving high production efficiency through synchronized operation while managing overall system complexity through integrated control and standardized component interfaces.

Inventive Principle:
Principle #5Merging (Combining)

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

Enhances production efficiency by enabling balanced pressure distribution and structural stability, reducing material usage and production costs while maintaining equipment performance.

Implementation Method 1

a hydraulic chamber is formed between the plurality of piston rods and the main cylinder assembly. When the main cylinder device is working, the hydraulic chamber has a spatial change, causing the at least two or two sets of piston rods to approach each other or move away from each other.

Methodology Applied
Scientific EffectHydraulic pressure: Hydraulic Press

Data Source

PatentEP3564024B1Hydraulic machine for simultaneous pressing of a plurality of workpieces
Publication Date: 2021.12.15 NINGBO DEMA INTELLIGENT MACHINERY CO LTD
  • EP3564024B1 patent drawingFigure 1~2
  • EP3564024B1 patent drawingFigure 3~4
  • EP3564024B1 patent drawingFigure 5~6

AI summary

The present disclosure discloses a main cylinder device including a main cylinder assembly (31) and a plurality of piston rods (32) connected with the main cylinder assembly (31). The number of the plurality of piston rods (32) is at least two or two sets, a hydraulic chamber is formed between the plurality of piston rods (32) and the main cylinder assembly (31). The at least two or two sets of piston rods (32) are arranged opposite to each other and move along a same straight line. When the main cylinder device is working, the hydraulic chamber has a spatial change, causing the at least two or two sets of piston rods (32) to approach each other or move away from each other. Because two or two sets of piston rods (32) are arranged opposite to each other and move along opposite directions during pressing operation, it can effectively keep pressure balance of the piston rods, and the reaction forces between the piston rods 32 can also be cancelled, improving consistency of work pieces.