DIMM Press Fixture With Load-Cell Force Control
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Solution Overview
Problem
The process of inserting Dual In-line Memory Modules (DIMMs) into a motherboard is delicate and prone to human error, which can result in damage to the memory modules or the motherboard.
Innovation Solution
A fixture system with a load cell sensor, a presser, a processor or PLC, and a Human Machine Interface (HMI) is used to automate the installation of memory modules onto a motherboard, ensuring precise alignment and controlled pressing force.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual installation of DIMM is performed, then flexibility and adaptability are maintained, but the risk of human error and damage increases
Solution Approach 1:
The patent replaces manual mechanical operations with an automated mechanical system. A presser mechanism controlled by a linear actuator applies precise vertical force to press DIMM cards into motherboard sockets, eliminating manual handling while maintaining controlled mechanical interaction. This substitution improves reliability by removing human error while preserving the essential mechanical pressing function.
Solution Approach 2:
The system incorporates self-correction capabilities through sensors that detect DIMM insertion status and provide feedback to the control system. The automated presser mechanism automatically adjusts its operation based on real-time feedback from load cells and position sensors, enabling the system to self-regulate and ensure proper installation without human intervention.
2Manufacturing precision
If automated pressing is applied, then consistency and precision are improved, but the complexity of the system increases
Solution Approach 1:
The patent implements multiple feedback mechanisms including load cells that measure pressing force, position sensors that track DIMM insertion depth, and sensors that detect proper socket engagement. This feedback is continuously monitored by a PLC control system that adjusts the presser mechanism in real-time, ensuring precise and consistent pressing force while automatically compensating for variations in the installation process.
Solution Approach 2:
The fixture system is designed with multi-functional capabilities to justify its complexity. The same presser mechanism can accommodate different DIMM types (DDR3, DDR4, DDR5), the system can perform both installation and verification functions, and the modular design allows the fixture to be adapted to different motherboard form factors, providing universal applicability across multiple product lines.
3Object-affected harmful factors
If force control is implemented, then damage risk is reduced, but the control system complexity increases
Solution Approach 1:
The system performs preliminary actions before the actual pressing operation. The linear actuator positions the presser mechanism precisely above the DIMM card, load cells are zeroed and calibrated, and the control system verifies sensor readiness. This preliminary setup ensures that when pressing begins, the force application is immediately controlled and monitored, preventing damage from improper positioning or uncalibrated force measurement.
Solution Approach 2:
The pressing system transitions from static to dynamic control during operation. The presser mechanism applies force progressively rather than instantaneously, with the rate of force application controlled by the linear actuator's speed regulation. The system dynamically adjusts pressing force based on real-time feedback from load cells, increasing force gradually until proper engagement is detected, then maintaining a controlled holding force to prevent damage.
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 system reduces the risk of human error, ensures consistent and precise installation, and minimizes the risk of damage to the components, thereby improving efficiency and safety.
Implementation Method 1
a fixture base with a load cell sensor
Data Source
AI summary
A fixture system for installing one or more memory modules onto a motherboard includes a fixture base with a load cell sensor, a stage with a presser for pressing the one or more memory modules into place, a processor or a programmable logic controller (PLC) to control control the stage, a Human Machine Interface (HMI) for monitoring and controlling the pressing force applied to the DIMMs during installation, and two hand buttons for activating the fixture.