Flat Output Screw Device Axial Force Torque Detection
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Solution Overview
Problem
Existing screwing devices with flat output mechanisms face challenges in accurately detecting torque applied to screwing partners due to measurement inaccuracies and tolerances caused by gear components and mechanical transmission paths, making it difficult to integrate torque detection means without increasing size or complexity.
Innovation Solution
Incorporating a helical gear wheel within the flat output housing that detects axial force and converts it into an electronic signal, using piezoelectric force sensors or hydraulic transmission for precise torque measurement at the output side, eliminating the need for a rotating measuring shaft and allowing for compact and cost-efficient design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a conventional torque measuring shaft is integrated into the flat output means, then torque detection at the output side is enabled, but the device size increases and structural compactness is compromised
Solution Approach 1:
The patent extracts the torque measurement function from a separate measuring shaft and integrates it into the existing helical gear wheel of the flat output means. The helical gear wheel serves dual purposes: torque transmission and torque measurement through axial force detection, eliminating the need for an additional measuring shaft and maintaining compact device size.
Solution Approach 2:
The helical gear wheel is designed to perform multiple functions simultaneously: it transmits torque from the drive to the output and also serves as the measurement element for detecting output torque. By making the gear wheel multi-functional, the patent avoids increasing device size while enabling accurate torque detection.
2Measurement precision
If torque detection means are added to the flat output housing, then measurement accuracy improves, but device complexity increases
Solution Approach 1:
The patent combines the torque detection means directly with the helical gear wheel and flat output housing structure. The axial force detection elements are integrated into the gear wheel assembly, merging the measurement function with the existing mechanical structure rather than adding separate complex detection systems.
Solution Approach 2:
The patent replaces complex mechanical torque measurement systems with a simplified axial force detection approach. By detecting axial forces on the helical gear wheel and converting them to electronic signals, the system achieves accurate torque measurement with simpler mechanical components.
3Power
If a helical gear wheel is used for torque transmission, then torque efficiency is improved, but measurement accuracy deteriorates due to axial forces on the gear components
Solution Approach 1:
The patent converts the axial forces, which were previously considered harmful or problematic in helical gear systems, into useful measurement signals. The axial forces that result from torque transmission are detected and used to determine the output torque, transforming a potential source of measurement error into the basis for accurate torque detection.
Solution Approach 2:
The system implements feedback by detecting the axial forces on the helical gear wheel and converting them into electronic signals that represent the output torque. This feedback mechanism allows the system to accurately measure the torque being transmitted while maintaining the efficiency benefits of helical gear transmission.
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 accurate and reliable torque detection at the output side with minimal production effort and maintenance, maintaining compactness while avoiding measurement errors associated with gear components, and enabling wireless energy harvesting for autonomous functionality.
Implementation Method 1
using piezoelectric force sensors or hydraulic transmission for precise torque measurement at the output side
Implementation Method 2
using piezoelectric force sensors or hydraulic transmission for precise torque measurement at the output side
Data Source
AI summary
The invention relates to a screw device for applying torque to a screw partner (12), comprising flat output assembly (10) provided with an output member that can be detachably connected to the screw partner and a drive to which a drive torque can be manually or mechanically applied, particularly by an interconnected angular and/or bevel gear (16), and an assembly (48) for detecting an output torque acting on the screw partner on the output side, the detection assembly associated with the flat output assembly and particularly provided on and/or in a housing (30 32) of the flat output assembly being designed such that it can detect an axial force acting on a helical gear (38) connecting the drive and the output member of the flat output assembly in a torque-transmitting manner and provide same for preferably electronic signal evaluation.