Fine Blanking Press Ram Guide Structure to Minimize Tilting

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Solution Overview

Problem

Fine blanking presses face issues with uneven forces causing tilting of the press ram, leading to increased wear, risk of damage, and impaired part quality due to inadequate guiding during the fine blanking process.

Innovation Solution

The guide sections on the press ram extend vertically higher than the ram plate section on both sides, creating a larger guiding area and minimizing tilting, while allowing for adjustable positions and materials like lightweight metals and sensors for real-time monitoring and control.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Stability of the object's composition

If guide sections are extended vertically higher than the ram plate section, then guiding robustness and stability are improved, but the space available for the fine blanking tool is reduced

Engineering Contradiction:
Improveguiding stabilityVSAvoidtool space
Core Design Contradiction:
Stability of the object's compositionVSVolume of moving object

Solution Approach 1:

The guide sections are extended in the vertical dimension beyond the ram plate section, creating additional guiding surface area without increasing the horizontal footprint. This allows the pressing element to maintain lateral compactness while achieving enhanced vertical guidance stability through increased contact area with the press frame.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Reliability

If guide sections extend higher to provide better guiding, then wear and damage risk are reduced, but the device complexity increases

Engineering Contradiction:
Improvewear resistanceVSAvoidstructure complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The pressing element is segmented into distinct functional zones: the ram plate section carrying the fine blanking tool and the separately extended guide sections providing guidance. This segmentation allows the guide sections to be optimized for guiding function with increased height and surface area, while the ram plate section maintains its tool-carrying capability, thereby reducing wear without requiring complete redesign of the entire pressing element.

Inventive Principle:
Principle #1Segmentation

3Speed

If guide sections are made from lightweight materials to reduce inertia, then acceleration performance is improved, but structural strength may be compromised

Engineering Contradiction:
ImproveaccelerationVSAvoidstructural strength
Core Design Contradiction:
SpeedVSStrength

Solution Approach 1:

The guide sections are constructed from lightweight metal alloys or composite materials that provide high strength-to-weight ratio. These materials reduce the mass of the pressing element to minimize inertia and improve acceleration performance, while simultaneously maintaining sufficient structural strength to withstand the mechanical loads and forces experienced during the pressing operation.

Inventive Principle:
Principle #40Composite materials

Data Source

PatentUS11642716B2Press ram for a fine blanking press
Publication Date: 2023.05.09 LAPMASTER WOLTERS GMBH
  • US11642716B2 patent drawing
  • US11642716B2 patent drawing
  • US11642716B2 patent drawing

AI summary

A press ram for a fine blanking press comprises a ram plate section configured to carry a fine blanking tool and at least two guide sections positioned on opposing sides of the ram plate section. The ram plate section comprises an upper surface, a lower surface, and two opposing side surfaces. The at least two guide sections of the ram plate section are configured to guide movement of the press ram relative to a press frame during a fine blanking process. The at least two guide sections extend in a vertical direction to a level that is higher than the upper side of the ram plate section.