Power Tool Attachment Drive for Alignment and Reciprocating Motion
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing power tools lack efficient mechanisms to convert rotational motion into linear reciprocating motion or to utilize rotational motion for airless spraying of paints and other fluids, and they often experience side-loading and misalignment issues during operation.
Innovation Solution
A power tool appliance that attaches to a power tool, featuring a drive mechanism to receive rotational input, a housing, and a support assembly with springs or struts to align and statically connect the power tool, allowing for conversion of rotational motion into linear reciprocating motion or airless spraying, while incorporating load compensation and adjustable interfaces to accommodate various tool sizes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a power tool appliance is attached to a power tool without proper alignment mechanisms, then the rotational motion can be received, but side-loading and misalignment issues occur during operation
Solution Approach 1:
The spring-loaded support assembly acts as a counterbalancing mechanism that compensates for misalignment forces. The spring applies a pre-load force to maintain proper alignment between the power tool and appliance, counteracting the side-loading that would otherwise occur during operation
Solution Approach 2:
The support assembly allows for adjustable positioning parameters of the power tool relative to the appliance. By changing the position parameters through the adjustable support, proper alignment is achieved, eliminating side-loading while maintaining reliable operation
2Strength
If a rigid connection is used to connect the power tool to the appliance housing, then stable connection is achieved, but misalignment and side-loading occur
Solution Approach 1:
The connection system transitions from a purely rigid static connection to a dynamic connection that incorporates spring-loaded adjustment capabilities. This allows the connection to maintain strength while adapting to alignment requirements, preventing misalignment and side-loading through controlled flexibility
Solution Approach 2:
The support assembly acts as an intermediary element between the power tool and appliance housing. It provides the necessary connection strength while simultaneously enabling alignment adjustment, mediating between the conflicting requirements of rigidity and flexibility
3Ease of manufacture
If the power tool interface is fixed without adjustment capabilities, then manufacturing is simplified, but adaptability to various tool sizes is reduced
Solution Approach 1:
The interface is made dynamically adjustable rather than fixed. The support assembly incorporates adjustment mechanisms that allow the interface parameters to be modified to accommodate different power tool sizes, maintaining ease of manufacture while significantly improving adaptability
Solution Approach 2:
The adjustable support assembly creates a universal interface that can accommodate multiple power tool sizes and configurations. This single adjustable mechanism serves the function of adapting to various tools, eliminating the need for multiple specialized interfaces
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 power tool appliance effectively converts rotational motion into linear reciprocating motion for operations like pumping or sawing, and enables efficient airless spraying by aligning and securing the power tool, reducing side-loading and ensuring stable operation.
Implementation Method 1
a shaft aligner supported on the housing, the shaft aligner configured to bias the housing vertically upwards relative to the power tool
Implementation Method 2
a spring disposed between the housing and the support assembly, the spring configured to bias the housing upwards and away from the support assembly to align the power tool and the power tool assembly
Data Source
AI summary
A power tool attachment is configured to connect to a power tool at a static interface and a dynamic interface. The static interface statically fixes the power tool and power tool attachment together. The dynamic interface provides rotational motion generated by the power tool to the power tool attachment. The rotational motion is provided to a drive of the power tool attachment that converts the rotational motion to a linear reciprocating output.