Mechanical Unloading Control for Collision-Free Machining Products

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Solution Overview

Problem

Existing methods for unloading machining products from a product support in a spatially limited unloading region are prone to collisions and inefficiencies, particularly in laser cutting systems where the unloading region is confined by a housing wall, leading to potential collisions and incomplete unloading.

Innovation Solution

A method involving a transfer movement along a transfer axis with defined spatial limits, where a reference point and reference length are established to ensure the machining product is fully within the unloading region before unloading, using a mechanical unloading arrangement with adaptive unloading elements and numerical control to prevent collisions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Area of stationary object

If the unloading region is confined by a housing wall to reduce space usage, then the space efficiency is improved, but the risk of collisions and incomplete unloading increases

Engineering Contradiction:

Improveunloading region spaceVSAvoidunloading reliability

Core Design Contradiction:

Area of stationary objectVSReliability

Solution Approach 1:

The control unit performs preliminary checks before unloading to ensure the machining product is fully within the unloading region. The method determines whether the front end point of the machining product has passed the unloading region limit along the transfer axis, and only continues unloading when this condition is met, preventing collisions with the housing wall

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system uses feedback control by continuously monitoring the position of the machining product relative to the unloading region limit. The control unit receives information about the product position and automatically adjusts the unloading process, ensuring the product is fully within the region before completing unloading, thus preventing collisions while maintaining space efficiency

Inventive Principle:

Principle #23Feedback

2Productivity

If the unloading operation continues immediately after the machining product is moved into the unloading region, then the productivity is improved, but collisions with the unloading region limit may occur

Engineering Contradiction:

Improveunloading speedVSAvoidcollision prevention

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

Before continuing the unloading operation, the control unit performs a preliminary verification to ensure the front end point of the machining product has passed the unloading region limit. This preliminary check ensures the product is fully within the unloading region before the unloading operation continues, preventing collisions while maintaining efficient throughput

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The control unit uses feedback control by monitoring the position of the machining product and only continuing the unloading operation when the position confirms the product is fully within the unloading region. This feedback mechanism ensures both high productivity and collision prevention

Inventive Principle:

Principle #23Feedback

3Reliability

If the unloading region length is made larger than the actual product length to ensure complete unloading, then the unloading reliability is improved, but the space utilization is reduced

Engineering Contradiction:

Improvecomplete unloadingVSAvoidunloading region size

Core Design Contradiction:

ReliabilityVSArea of stationary object

Solution Approach 1:

The control unit performs a preliminary determination to verify that the unloading region length is sufficient for the specific machining product before initiating unloading. This ensures complete unloading reliability while optimizing the unloading region size for each product type

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system dynamically adjusts the unloading process based on the specific dimensions of the machining product. The control unit determines the appropriate unloading region length for each product, ensuring complete unloading while optimizing space utilization for different product sizes

Inventive Principle:

Principle #15Dynamics

Data Source

PatentUS20250332677A1Unloading method and mechanical unloading arrangement for unloading a machining product of a workpiece machining operation, production method and mechanical production arrangement

Publication Date: 2025.10.30 TRUMPF WERKZEUGMASCHINEN GMBH & CO KG

AI summary

An unloading method for unloading a machining product of a workpiece machining operation from a product support is provided. The method includes moving the machining product with a transfer movement along a transfer axis into an unloading region including a spatial unloading region limit located along the transfer axis and an unloading region length along the transfer axis which is larger than an actual product length of the machining product along the transfer axis; and continuing the unloading operation after the machining product has been provided for unloading. A reference length extends along the transfer axis and is at least the actual product length. After completion of the transfer movement, a distance along the transfer axis is compared with the limit distance from the reference point, and the unloading operation is continued only under a condition that the distance is less than the limit distance.