Tolerance Compensation Coupling for Automated Screw Alignment

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Solution Overview

Problem

Current tolerance compensation devices require manual alignment and setting, which is time-consuming and costly.

Innovation Solution

A tolerance compensation device equipped with a coupling agent that allows for automated alignment and attachment to a carrier element, enabling precise and efficient assembly.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If manual alignment and setting process is used, then flexibility in handling different orientations is maintained, but assembly time increases and costs rise

Engineering Contradiction:
Improveassembly speedVSAvoidalignment complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The coupling means is designed with a predefined geometric configuration (such as a T-slot or L-slot groove with undercut) that pre-establishes the correct orientation and position of the base element relative to the support element. This preliminary structural arrangement eliminates the need for manual alignment operations during assembly, allowing robots to simply feed and attach the device without complex alignment procedures.

Inventive Principle:
Principle #10Preliminary action

2Extent of automation

If automated setting process is implemented, then assembly time and costs are reduced, but the device requires specific coupling structures for automation

Engineering Contradiction:
Improveautomation capabilityVSAvoidstructural complexity
Core Design Contradiction:
Extent of automationVSDevice complexity

Solution Approach 1:

The coupling means serves multiple functions simultaneously: it provides structural attachment between the base element and support element, defines the correct orientation and position for automated feeding, and enables reproducible alignment without requiring separate alignment mechanisms. This multi-functionality achieves automation capability without proportionally increasing structural complexity.

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

3Ease of operation

If devices are stored in storage container in any orientation, then storage flexibility is maximized, but correct alignment during assembly becomes difficult

Engineering Contradiction:
Improvestorage flexibilityVSAvoidalignment precision
Core Design Contradiction:
Ease of operationVSManufacturing precision

Solution Approach 1:

The coupling means employs an asymmetric geometric design (such as a T-slot, L-slot, or dovetail groove with undercut) that creates a unique fitting relationship between the base element and support element. This asymmetric structure ensures that even when devices are stored in random orientations, only one specific orientation allows the coupling means to engage correctly with the support element, automatically achieving precise alignment during the feeding process without requiring pre-alignment during storage.

Inventive Principle:
Principle #4Asymmetry

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

The automated setting process improves alignment precision, reduces assembly time, and lowers costs compared to manual methods.

Implementation Method 1

To transmit torque from the connecting screw to the compensating element, a torque transmission means, for example in the form of a spring element, is typically provided in the passage of the compensating element.

Methodology Applied
Scientific EffectElasticity: Elasticity

Data Source

PatentEP3660338B1Tolerance compensating device with coupling means
Publication Date: 2025.04.23 WITTE AUTOMOTIVE GMBH
  • EP3660338B1 patent drawingFigure 1A~1B
  • EP3660338B1 patent drawingFigure 2
  • EP3660338B1 patent drawingFigure 3A~4

AI summary

The invention relates to a device (14) for compensating tolerances between two components to be connected by means of a connecting screw, comprising a base element (16) and a compensating element (18) movable out of the base element (16), wherein the base element (16) and the compensating element (18) form a passage (20) defining an axial direction for the connecting screw, and wherein a coupling means (43) of the device is configured to couple the device (14) with a support element (46, 48, 54) and to guide the device (14) along the support element (46, 48, 54).