Load Sensing Attachment for Precise Axial Force Measurement
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Solution Overview
Problem
Existing technologies fail to accurately measure the total axial load applied to machine tool assemblies during operations on workpieces, particularly with handheld tools and manipulative robots, as they only provide discrete sensor inputs.
Innovation Solution
A load sensing attachment for machine tool assemblies, comprising a machine tool interface, a load sensing device, and a bit clamp interface, which detects axial loads on the machine tool housing and translates rotational force to the bit clamp, using components like strain gauges or load cells to provide comprehensive load measurements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If discrete sensor inputs (e.g., integrated glove with pressure points) are used to measure load, then the device complexity is reduced, but the measurement precision of total axial load is insufficient
Solution Approach 1:
A load sensing attachment is introduced as an intermediary device between the machine tool and the workpiece. This attachment includes load sensing means (such as strain gauges or load cells) that directly measure the axial load on the machine tool housing, providing accurate total load measurement without requiring complex integration of multiple discrete sensors throughout the system.
2Measurement precision
If multiple discrete sensors are integrated throughout the system to capture all force inputs, then the measurement precision improves, but the device complexity increases
Solution Approach 1:
The load sensing function is extracted from the main machine tool system and consolidated into a separate, dedicated load sensing attachment. This attachment houses the load sensing means and signal processing components independently, allowing for accurate measurement without complicating the overall machine tool architecture.
Solution Approach 2:
Multiple sensing functions (axial load measurement, rotational force detection) are merged into a single integrated attachment device that interfaces with the machine tool at one location, rather than distributing multiple discrete sensors throughout the system.
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
Enables precise measurement of axial loads, facilitating ergonomic evaluations and ensuring safe and efficient operation by minimizing human impact and maximizing safety in machine tool applications.
Implementation Method 1
using components like strain gauges or load cells to provide comprehensive load measurements
Implementation Method 2
using components like strain gauges or load cells to provide comprehensive load measurements
Data Source
AI summary
A load sensing attachment for a machine tool assembly includes a machine tool interface, a load sensing device and a bit clamp interface. The machine tool interface couples the load sensing attachment to a drive train for a machine tool of the machine tool assembly. The load sensing device detects an axial load exerted on a housing of the machine tool when the load sensing attachment is coupled to the machine tool. The bit clamp interface couples the load sensing attachment to a bit clamp that selectively receives and secures a working bit. The bit clamp interface is coupled to the machine tool interface. A machine tool assembly for performing an operation on a workpiece includes the machine tool, the bit clamp and the load sensing attachment. A method for performing an operation on a workpiece using the machine tool assembly with the load sensing attachment is also disclosed.