Origin Microadjustment Mechanism for Linear Motor Sensing Member

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Solution Overview

Problem

Conventional linear motors face difficulties in adjusting the position of sensing members, which are typically fixed by adhesive, leading to inconvenience and potential misalignment, especially in uniaxial and gantry linear motors.

Innovation Solution

An origin microadjustment mechanism that includes a load bearing member with a positioning post and base, allowing the sensing member to be adjusted by moving the load bearing member through positioning seats fixed on the stator, and utilizing a knob with teeth to precisely adjust the position of the sensing member relative to the stator.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the sensing member is fixed on the stator by adhesive, then the sensing member can be securely attached, but the position adjustment becomes inconvenient and time-consuming

Engineering Contradiction:

Improvesecure attachment of sensing memberVSAvoidposition adjustment convenience

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The device is divided into separate functional components: a positioning seat fixed to the stator, a load bearing member that carries the sensing member, and an adjustable connection between them. This segmentation allows the sensing member to be securely attached to the load bearing member while enabling independent adjustment of the load bearing member relative to the positioning seat, thus resolving the contradiction between secure attachment and ease of adjustment.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The connection between the load bearing member and positioning seat is made dynamically adjustable rather than fixed. The load bearing member can be moved along the positioning seat to different positions and then fixed in place, allowing the system to transition from a static fixed state to a dynamic adjustable state and back, thereby enabling both secure attachment and convenient position adjustment.

Inventive Principle:

Principle #15Dynamics

2Ease of manufacture

If the sensing members are fixed on the stators by adhesive separately, then each sensing member can be individually attached, but the alignment precision between multiple sensing members becomes difficult to control

Engineering Contradiction:

Improveindividual attachment of sensing membersVSAvoidalignment precision of sensing members

Core Design Contradiction:

Ease of manufactureVSManufacturing precision

Solution Approach 1:

The positioning seat serves multiple functions: it provides a standardized mounting interface for the sensing member, establishes a common reference frame for alignment, and enables precise positioning through the load bearing member adjustment mechanism. By making the positioning seat universal and multi-functional, the system achieves both ease of individual attachment and high alignment precision across multiple sensing members.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The adhesive-based mechanical attachment system is replaced with a mechanical adjustment system comprising the positioning seat and load bearing member. This substitution eliminates the need for adhesive while providing precise mechanical alignment through the structured interface between the load bearing member and positioning seat, thereby improving both ease of manufacture and alignment precision.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Adaptability or versatility

If the sensing member position needs to be adjusted by removing and re-fixing with adhesive, then the position can be changed, but the assembly process becomes complex and time-consuming

Engineering Contradiction:

Improveposition adjustability of sensing memberVSAvoidassembly process complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The load bearing member acts as an intermediary between the positioning seat and the sensing member. Instead of directly attaching the sensing member to the positioning seat (which would require adhesive and complex assembly), the load bearing member mediates this connection, providing a simple mechanical interface that enables easy position adjustment without complex assembly procedures.

Inventive Principle:

Principle #24Intermediary (Mediator)

4Strength

If the sensing member is firmly fixed by adhesive, then the connection is strong, but the position cannot be easily adjusted after assembly

Engineering Contradiction:

Improveconnection strength of sensing memberVSAvoidpost-assembly position adjustment

Core Design Contradiction:

StrengthVSEase of operation

Solution Approach 1:

The connection system is designed to be dynamic during assembly and adjustment, allowing the load bearing member to be moved freely along the positioning seat. Once the desired position is achieved, the connection becomes static and firm, maintaining the sensing member in the correct position. This dynamic-to-static transition resolves the contradiction between strong connection and easy adjustment.

Inventive Principle:

Principle #15Dynamics

Data Source

PatentUS7579720B2Origin microadjustment mechanism for a linear motor

Publication Date: 2009.08.25 HIWIN MIKROSYST

AI summary

An origin microadjustment mechanism for a linear motor is assembled on a stator of the linear motor and comprises a load bearing member fixed to a sensing member and two positioning seats. The load bearing member is movably passed through the positioning seats, and the positioning seats are fixed to the stator, so as to adjust the position of the sensing member relative to the stator.