F-Type Clamp Locking Mechanism for Position Stability

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Solution Overview

Problem

Conventional F-type clamps experience displacement and accidental disengagement of the sliding bar relative to the rail due to gravity and vibrations, affecting positioning accuracy and leading to workpiece clamping failures.

Innovation Solution

A locking device is integrated between the sliding member and the rail, utilizing a spring-loaded mechanism with a locking member and screw member to maintain engagement of the upper and lower bearing points, preventing displacement and allowing external adjustment.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the sliding bar is allowed to move freely along the rail for position adjustment, then the ease of operation is improved, but the stability of the object's composition deteriorates due to displacement from gravity and vibrations

Engineering Contradiction:
Improveease of position adjustmentVSAvoidstability of sliding bar position
Core Design Contradiction:
Ease of operationVSStability of the object's composition

Solution Approach 1:

The bearing points are designed to dynamically transition between two states: a locked state where they engage with the rail to prevent displacement, and an unlocked state where they disengage to allow free movement. This dynamic switching resolves the contradiction by providing both stability during operation and ease of adjustment during positioning

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The system changes the engagement parameter of the bearing points with the rail. When adjusted, the bearing points shift from an engaged configuration (providing stability) to a disengaged configuration (allowing movement). This parameter change enables the system to switch between stable and mobile states as needed

Inventive Principle:
Principle #35Parameter changes

2Stability of the object's composition

If the bearing points are kept engaged with the rail under normal conditions, then the stability of the object's composition is improved, but the ease of operation deteriorates because adjustment requires disengagement

Engineering Contradiction:
Improvestability of sliding bar positionVSAvoidease of position adjustment
Core Design Contradiction:
Stability of the object's compositionVSEase of operation

Solution Approach 1:

The bearing points automatically transition between engaged and disengaged states based on operational needs. During normal operation, they remain engaged for stability. During adjustment, they disengage to allow movement. This dynamic behavior resolves the contradiction by providing both stability and adjustability at different times

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The bearing points are designed to self-adjust their engagement state. When the sliding bar is moved for positioning, the bearing points naturally disengage; when positioning is complete, they automatically re-engage. This self-service mechanism eliminates the need for manual intervention to switch between stable and mobile states

Inventive Principle:
Principle #25Self-service

3Stability of the object's composition

If the sliding bar is constrained to prevent displacement, then the stability of the object's composition is improved, but the ease of operation deteriorates due to restricted movement

Engineering Contradiction:
Improvepositioning accuracyVSAvoidease of sliding bar movement
Core Design Contradiction:
Stability of the object's compositionVSEase of operation

Solution Approach 1:

The constraint system is designed to be dynamic rather than static. The bearing points can switch between constrained (engaged with rail) and unconstrained (disengaged from rail) states. This allows the system to maintain positioning accuracy during operation while enabling easy adjustment when needed

Inventive Principle:
Principle #15Dynamics

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 locking device ensures stable workpiece clamping by maintaining engagement of the bearing points under normal conditions and allowing precise adjustment, enhancing the accuracy and reliability of the clamping process.

Implementation Method 1

a spring member (43) set between the locking member (41) and the screw member (42) to support the locking member (41)

Methodology Applied
Scientific EffectElasticity: Elasticity

Implementation Method 2

the effect of the gravity weight of the sliding bar 4 and the screw rod 6 can cause displacement of the sliding rail 4 relative to the rail 2

Methodology Applied
Scientific EffectGravity: Gravitation

Data Source

PatentUS8985566B2F type clamp having a locking function
Publication Date: 2015.03.24 EHOMA INDAL CORP
  • US8985566B2 patent drawing
  • US8985566B2 patent drawing
  • US8985566B2 patent drawing

AI summary

A F type clamp having a locking function includes a base frame including a locating frame bar and a rail, a sliding member having one end coupled to the rail and selectively set between a locking position and an unlocking position, a clamping member movably mounted at an opposite end of the sliding member and providing a jaw plate for working with the locating frame bar to hold down a workpiece, and a locking device set between the sliding member and the rail for locking the sliding member to the rail under normal conditions and for enabling the sliding member to be moved relative to the rail by an external force.