Telescopic Facing Accessory Radial Extension
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Solution Overview
Problem
Portable boring machines face challenges in machining large surfaces around the rim of bores due to limited radial extension of facing accessories, which can lead to safety risks for operators when manual radial movement is required.
Innovation Solution
A facing accessory with a telescopic arm mechanism that allows radial movement of the facing tool relative to the shaft, enabled by a drive assembly, transmission assembly, and screw shaft, allowing for controlled extension and retraction of the tool holder, and a wireless communication unit for remote operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the facing accessory extends radially further from the shaft to cover a larger surface, then the machining area is improved, but the ability to fit into small spaces deteriorates
Solution Approach 1:
The facing accessory employs a telescopic arm that can dynamically adjust its radial length. The arm extends to reach larger machining surfaces when needed, and retracts to fit into confined spaces, transforming a static structure into a dynamic one that adapts to different operational requirements.
2Ease of operation
If manual radial movement of the tool is allowed, then the operator can adjust the tool position, but the safety of the operator deteriorates
Solution Approach 1:
The patent replaces manual mechanical adjustment with an automated actuator system. The actuator controls the radial movement of the telescopic arm, eliminating the need for operators to manually position the tool near rotating components, thereby substituting a dangerous manual operation with a safe automated mechanism.
3Extent of automation
If the radial movement is coupled to the rotation of the shaft, then the tool movement is automated, but the complexity of the mechanism increases
Solution Approach 1:
The patent introduces an actuator as an intermediary component between the control system and the telescopic arm. This actuator independently controls the radial movement of the arm without being mechanically coupled to the shaft rotation, achieving automation while maintaining structural simplicity by avoiding complex coupling mechanisms.
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 safe and efficient machining of large surfaces by allowing the facing tool to extend radially further than standard accessories, reducing operator risk and improving machining precision and accessibility in confined spaces.
Implementation Method 1
a screw shaft, the second section of the telescopic arm comprising a threaded opening on a side facing the shaft mounting portion, a first end of the screw shaft being operatively connected to the transmission assembly and a second end of the screw shaft being threadingly engaged in the threaded opening
Data Source
AI summary
There is described a facing accessory for a portable boring apparatus, the accessory comprising: a shaft mounting portion for mounting to a longitudinal shaft of the portable boring apparatus extending along a longitudinal axis; a tool holder secured to the shaft mounting portion and adapted to receive a facing tool thereon, the tool holder comprising at least a telescopic arm for enabling movement of the facing tool towards and away from the shaft mounting portion along a radial axis relative to the longitudinal shaft; and an actuator operatively connected to the second section of the telescopic section for translating the second section relative to the first section along the radial axis.