Machine Tool Separating Device Transverse Locking

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Solution Overview

Problem

Existing power tool parting devices face challenges in securely maintaining the blade carrier elements in place during operation, leading to potential movement and instability, which affects the precision and reliability of the cutting process.

Innovation Solution

The implementation of a transverse securing element, formed through tensile forming or other suitable connections, secures the blade carrier elements relative to each other, limiting transverse movement and ensuring a stable assembly, thereby preventing lateral displacement and enhancing the precision of the cutting process.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If blade carrier elements are connected without transverse locking elements, then the assembly is simpler and manufacturing is easier, but the blade carrier elements move transversely during operation causing instability

Engineering Contradiction:
Improvestability of blade carrier elementsVSAvoidstructure of cutting strand
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The transverse locking elements are integrally formed onto the blade carrier elements, merging the locking function into the blade carrier structure itself rather than using separate components. This reduces device complexity while maintaining reliability by preventing transverse movement through the integrated locking features.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The transverse locking elements are formed directly on the blade carrier elements, allowing each blade carrier element to provide its own locking function without requiring external locking components. This self-service approach simplifies the overall structure while ensuring stable operation during cutting.

Inventive Principle:
Principle #25Self-service

2Ease of manufacture

If traditional connection methods are used for blade carrier elements, then assembly is simpler, but assembly costs increase and disassembly control is difficult

Engineering Contradiction:
Improveassembly processVSAvoidassembly time and cost
Core Design Contradiction:
Ease of manufactureVSLoss of time

Solution Approach 1:

The transverse locking elements are pre-formed on the blade carrier elements during manufacturing, so that when assembly occurs, the locking function is already in place. This preliminary action reduces assembly time and cost by eliminating the need for separate locking operations, while the formed structure prevents unintentional disassembly.

Inventive Principle:
Principle #10Preliminary action

3Manufacturing precision

If blade carrier elements are securely locked against transverse movement, then cutting precision improves, but the device becomes more complex

Engineering Contradiction:
Improvecutting precisionVSAvoidcutting strand structure
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The locking function is merged into the blade carrier element structure itself through integral formation of transverse locking elements. This approach achieves precise cutting by preventing transverse movement while avoiding increased device complexity, as the locking features are part of the original structure rather than additional components.

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

This configuration results in a compact, cost-effective power tool parting device with improved assembly efficiency and precise work results by securely fixing the blade carrier elements, reducing assembly costs and preventing unintentional disassembly.

Implementation Method 1

the transverse locking element is designed to secure the cutting element in an assembled state as far as possible against transverse movement relative to another cutting element of the cutting strand

Methodology Applied
Scientific EffectPositive locking mechanism: Mechanical Fastener

Implementation Method 2

The transverse locking element is preferably integrally formed onto the cutting element by tensile forming

Methodology Applied
Scientific EffectTensile forming: Deformation

Data Source

PatentEP2819818B1Machine tool separating device
Publication Date: 2020.05.27 ROBERT BOSCH GMBH
  • EP2819818B1 patent drawingFigure 1~2
  • EP2819818B1 patent drawingFigure 3~4

AI summary

A machine tool separating device, in particular a manual machine tool separating device, includes at least one cutting train that comprises at least one cutter-support element and at least one connecting element that is integrally formed with the cutter-support element. The cutter-support element has at least one transverse securing element that is configured to secure the cutter-support element against a transverse movement relative to another cutter-support element of the cutting train to the greatest extent possible in the assembled state.