Encoder Gapping Slide Top-Mounted Design

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Solution Overview

Problem

Conventional encoder gapping and centring devices are difficult to manipulate and operate when installed in confined spaces, as they often extend beyond the encoder's periphery and interfere with mounting configurations, making it challenging to mount encoders in tight spaces like tubular or pocketed areas.

Innovation Solution

A gapping and centring device with a slide that is movable between engaged and disengaged positions, featuring parallel clamping arms and clamping jaws with complementary profiles, allowing axial and radial positioning of the encoder hub without extending beyond the encoder's periphery, enabling easy mounting in various configurations, including tubular spaces.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the slide extends beyond the encoder periphery for manipulation, then the gapping and centring function is achieved, but the device becomes difficult to install in confined spaces

Engineering Contradiction:
Improvegapping and centring manipulationVSAvoidencoder assembly size
Core Design Contradiction:
Ease of operationVSVolume of moving object

Solution Approach 1:

The slide is repositioned from a bottom-mounted configuration to a top-mounted configuration on the encoder housing. This dimensional change allows the slide to be accessed and manipulated from the top side of the encoder, eliminating the need for it to extend beyond the radial periphery while still providing full manipulation capability for gapping and centring operations.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Ease of operation

If the slide is bottom mounted for ease of access, then manipulation is easier, but it interferes with mounting configurations in tight spaces

Engineering Contradiction:
Improveslide manipulationVSAvoidmounting configuration flexibility
Core Design Contradiction:
Ease of operationVSAdaptability or versatility

Solution Approach 1:

The slide mounting location is inverted from the conventional bottom-mounted position to a top-mounted position on the encoder housing. This inversion allows the slide to be accessed from the top side, providing ease of manipulation while eliminating interference with bottom-side mounting configurations and enabling flexible installation in various tight space arrangements.

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

3Volume of moving object

If the slide does not extend beyond the periphery for compact mounting, then installation in confined spaces is enabled, but manipulation becomes difficult

Engineering Contradiction:
Improveencoder assembly sizeVSAvoidslide manipulation
Core Design Contradiction:
Volume of moving objectVSEase of operation

Solution Approach 1:

By changing the mounting dimension of the slide from bottom to top, the design achieves compact integration within the encoder periphery while maintaining full manipulation accessibility. The top-mounted configuration allows operators to access and manipulate the slide from the top side without requiring it to extend beyond the radial boundaries.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

Data Source

PatentEP1724557B1Encoder device and apparatus for gapping and centring an encoder device
Publication Date: 2016.02.17 DR JOHANNES HEIDENHAIN GMBH
  • EP1724557B1 patent drawingFigure 1
  • EP1724557B1 patent drawingFigure 2
  • EP1724557B1 patent drawingFigure 3

AI summary

An encoder device includes: a housing (10); a hub (4) arranged in the housing (10), the hub (4) arranged to carry an encoder disk (41), the hub (4) rotatable in the housing (10); and a gapping and centring device carried by the housing (10) and including a slide (51) that is movable between a first position and a second position. The slide (51) in the first position is arranged to urge the hub (4) into a predetermined axial and radial position relative to a portion of the housing (10), and the slide (51) in the second position is arranged to permit axial and radial movement of the hub (4). The slide (51) is arranged on an axial side of the housing (10) opposite to an axial side on which the housing (10) is to be mounted to a device to be measured, and the slide (51) in the first position and in the second position does not extend beyond a radial periphery of the housing (10). (Figure 2)