Machine Tool Clamping for Stable Axial Processing Strokes

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Solution Overview

Problem

Existing processing units for metal processing face challenges in maintaining the position of the machine tool during processing, especially when significant forces act on the machine tool along the working axis, and in applications where fastening means protruding in the forward stroke direction are a hindrance.

Innovation Solution

A processing unit design that includes a machine tool positively supported on a tool support along the working axis in both forward and backward stroke directions without the need for a fastening means in front of the machine tool in the forward stroke direction. This is achieved through a clamping device with a tension element preloaded by a tensioning device, ensuring the machine tool remains securely positioned during processing.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Stability of the object's composition

If a fastening means protrudes in the forward stroke direction to secure the machine tool, then the machine tool position stability is improved, but the applicability is worsened when protruding fastening means are a hindrance

Engineering Contradiction:
Improvemachine tool position stabilityVSAvoidapplicability in different scenarios
Core Design Contradiction:
Stability of the object's compositionVSAdaptability or versatility

Solution Approach 1:

Instead of using a fastening means that protrudes in the forward stroke direction, the invention inverts the approach by using a clamping device with a clamping element that acts in the backward stroke direction. The tension element is preloaded to clamp the machine tool against the tool support in the forward stroke direction, achieving position stability without any protruding fastening means in the forward stroke direction.

Inventive Principle:
Principle #13The other way round (Inversion)

Solution Approach 2:

The invention uses a dynamic clamping mechanism where the tension element can be preloaded to generate clamping forces. The clamping device adapts to different processing scenarios by adjusting the preload force on the tension element, providing both position stability and versatility without requiring protruding fastening means.

Inventive Principle:
Principle #15Dynamics

2Stability of the object's composition

If a clamping device with preloaded tension element is used to secure the machine tool, then the machine tool position stability under significant processing forces is improved, but the device complexity increases

Engineering Contradiction:
Improvemachine tool position stability under processing forcesVSAvoidclamping device structure
Core Design Contradiction:
Stability of the object's compositionVSDevice complexity

Solution Approach 1:

The invention merges the clamping function and the tensioning function into a single integrated clamping device. The tension element serves dual purposes: it provides the clamping force to secure the machine tool and can be preloaded through the integrated tensioning device, reducing overall system complexity despite the enhanced functionality.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The preloaded tension element creates a self-adjusting clamping system that automatically maintains the machine tool position under varying processing forces. The system uses its own preloaded tension to compensate for forces during processing, reducing the need for additional complex control mechanisms.

Inventive Principle:
Principle #25Self-service

Data Source

PatentUS12214413B2Processing unit and processing machine for processing a workpiece wall of a workpiece, and method for producing such a processing unit
Publication Date: 2025.02.04 FELSS SYST GMBH
  • US12214413B2 patent drawing
  • US12214413B2 patent drawing

AI summary

A processing unit for processing a workpiece wall of a workpiece with a forward stroke carried out by the processing unit in a forward stroke direction of the processing unit towards the workpiece, and with a backward stroke carried out by the processing unit in a backward stroke direction of the processing unit away from the workpiece, wherein the workpiece and the processing unit move relative to each other along a working axis of the processing unit. A processing machine for processing a workpiece wall of a workpiece contains the processing unit.