Pneumatic Fastener Tooling for Reliable Assembly
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Summary
Problems
Current fastener installation tools require significant and sustained manual force for assembly and disassembly, which can lead to inefficiencies due to the loss of effectiveness over time in pressure-maintaining systems.
Innovation solutions
An installation tooling system with a pressure chamber, ducts, blocking elements, and fluid inlets to facilitate the use of pressurized fluid for holding and ejecting fasteners, combined with a wrench driven by a motor for rotational control, and anti-rotation features to secure the fastener during assembly and disassembly.
TRIZ Analysis
Specific contradictions:
General conflict description:
Principle concept:
If manual force is applied to insert the fastener into the installation tooling, then the fastener can be held in position, but significant and sustained force is required which loses effectiveness over time
Why choose this principle:
The patent employs a pneumatic system with a pressure chamber, pneumatic actuator, and blocking elements (balls) that are propelled into grooves on the fastener body using compressed air. This replaces manual force application with a reliable pneumatic mechanism that maintains consistent holding force without degradation over time, directly resolving the contradiction between reliability and force requirement.
Principle concept:
If pressure-maintaining systems are used to hold the fastener, then the fastener can be secured during installation, but the systems lose effectiveness over time
Why choose this principle:
The pneumatic system uses compressed air stored in a pressure chamber to propel blocking elements into engagement with the fastener. This pneumatic mechanism provides reliable, repeatable action over extended periods without the degradation issues of manual pressure systems, extending the effective duration while maintaining reliability.
Application Domain
Data Source
AI summary:
An installation tooling system with a pressure chamber, ducts, blocking elements, and fluid inlets to facilitate the use of pressurized fluid for holding and ejecting fasteners, combined with a wrench driven by a motor for rotational control, and anti-rotation features to secure the fastener during assembly and disassembly.
Abstract
An installation tool ( 14 ) has a tool body ( 50 ) comprising a first opening capable of blocking the axial end of the body ( 26 ) of a fastener ( 12 ) and an actuating device ( 52 ), rotatable relative to the tool body and comprising a second opening capable of blocking a fastener actuating element ( 28 ). The tool includes a pressure chamber ( 120 ) in the tool body a duct ( 122 ) connecting the pressure chamber to the first opening ( 62 ), a blocking element ( 124 ), movable in the duct between a retracted position and a projecting position; and a fluid inlet ( 55 ) opening onto the pressure chamber. An inflow of fluid into the pressure chamber moves the blocking element ( 124 ) to the protruding position.