Forming Device Stroke Adjustment for Cup Hollow Bodies

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Solution Overview

Problem

Existing forming devices for cup-shaped hollow bodies struggle to adapt to varying outer geometries and sizes of hollow bodies, requiring adjustable processing strokes and frequencies to prevent tool acceleration exceeding limits and ensure precise processing.

Innovation Solution

Incorporating a stroke adjustment arrangement connected to a control device for variably adjusting the working stroke of the cyclical linear movement, and a coupling device to synchronize rotary step and cyclical linear movements, allowing for phase shifts and precise phase positioning between drive means, ensuring tools are always moved within safe acceleration limits.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the working stroke is increased to process different hollow body geometries, then adaptability is improved, but the risk of exceeding tool acceleration limits increases

Engineering Contradiction:
Improveadaptability to different hollow body geometriesVSAvoidtool acceleration limit compliance
Core Design Contradiction:
Adaptability or versatilityVSReliability

Solution Approach 1:

The forming device implements dynamic adjustment of the working stroke through a stroke adjustment arrangement that allows the cyclical linear movement range to be varied based on the specific hollow body geometry being processed. This dynamic adaptability ensures the tools remain within safe acceleration limits while accommodating different processing requirements

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The system changes the working stroke parameter continuously or in discrete steps to match different hollow body geometries. The control device receives information about the hollow body type and automatically adjusts the working stroke parameter to optimize processing while maintaining safety limits

Inventive Principle:
Principle #35Parameter changes

2Productivity

If the processing frequency is increased to improve productivity, then output is improved, but the precision of phase synchronization between rotary and linear movements deteriorates

Engineering Contradiction:
Improveprocessing frequencyVSAvoidphase synchronization precision
Core Design Contradiction:
ProductivityVSManufacturing precision

Solution Approach 1:

The control device implements feedback control to monitor and adjust the phase position between the rotary step movement and cyclical linear movement. This feedback mechanism ensures precise phase synchronization is maintained even at higher processing frequencies, preventing timing errors in the forming process

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The system replaces purely mechanical coupling with a control-based synchronization system that uses control signals to coordinate the rotary and linear movements. This allows for precise phase control through electronic means rather than relying solely on mechanical timing

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

3Adaptability or versatility

If manual adjustment of working stroke is implemented, then adaptability is improved, but device complexity and operation time increase

Engineering Contradiction:
Improveworking stroke adjustabilityVSAvoidadjustment mechanism complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The forming device performs self-adjustment of the working stroke through automated control systems. The control device automatically sets the appropriate working stroke based on pre-programmed parameters or input data about the hollow body geometry, eliminating the need for manual intervention and reducing operational complexity

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The control device serves multiple functions: it manages the stroke adjustment arrangement, coordinates the phase position between movements, and oversees the entire forming process. This multi-functionality consolidates what would otherwise require separate manual adjustment mechanisms into a single integrated control system

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

Data Source

PatentUS8997544B2Forming device
Publication Date: 2015.04.07 HINTERKOPF
  • US8997544B2 patent drawing
  • US8997544B2 patent drawing
  • US8997544B2 patent drawing

AI summary

A forming device for cup-shaped hollow bodies having a machine frame, a drive device, a workpiece rotary table for accommodating hollow bodies and a tool holder for accommodating processing tools, wherein the workpiece rotary table and the tool holder face one another and can be turned about a rotational axis in relation to one another and can be linearly moved in relation to one another along the rotational axis, and wherein the drive device comprises first drive means for providing a rotary step movement and second drive means for providing a cyclical linear movement between workpiece rotary table and tool holder to enable the hollow bodies to be formed by means of the processing tools in a plurality of consecutive processing steps. The second drive means has a stroke adjustment arrangement which is designed for adjusting a working stroke of the cyclical linear movement as a function of a control signal of a control device and/or for continuously variably adjusting the working stroke.