Adaptable Sanding Head for Angle Grinders
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional sanding and polishing systems in grinding machines require complete disassembly for disk changes, leading to uneven wear and vibrations when handling rounded surfaces, making the process difficult and potentially rendering the machine useless.
Innovation Solution
A sanding head with a plate having a cylindrical end and internal nut for secure attachment to the machine shaft, featuring a Velcro-type attachment system for easy disk replacement and centering, allowing for uniform wear and reduced vibrations on non-planar surfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If a conventional sanding disk is assembled directly in the shaft of the grinder using a locking nut, then the disk can be securely fixed, but changing the disk requires complete disassembly and reassembly of the shaft assembly
Solution Approach 1:
The sanding head is divided into two separate parts: a reusable plate that attaches to the grinder shaft, and a replaceable sanding disk that attaches to the plate. This segmentation allows the sanding disk to be changed without removing the plate from the shaft, significantly reducing replacement time and complexity
Solution Approach 2:
The plate acts as an intermediary component between the grinder shaft and the sanding disk. It provides a standardized interface (threaded connection) to the shaft and a simplified interface (Velcro-type attachment) to the disk, mediating the connection and enabling easy disk replacement
2Ease of manufacture
If a planar sanding disk is used on rounded surfaces, then the disk can be easily manufactured, but it causes uneven wear and vibrations that render the machine useless
Solution Approach 1:
The sanding disk is designed with a tapered configuration rather than a planar shape. This dynamic adaptation allows the disk to conform to rounded surfaces during operation, ensuring uniform contact and wear while eliminating vibrations that would occur with a rigid planar disk
Solution Approach 2:
The geometry of the sanding disk is changed from planar to tapered, modifying the contact parameters between the disk and the workpiece. This parameter change enables the disk to adapt to curved surfaces while maintaining manufacturing feasibility
3Ease of manufacture
If the sanding disk attachment means are simple and planar, then the manufacturing is easier, but the disk cannot be properly centered and secured on non-planar surfaces
Solution Approach 1:
The attachment system is segmented into two distinct mechanisms: a threaded connection for securing the plate to the shaft, and a Velcro-type attachment for connecting the disk to the plate. This segmentation provides both simplicity and effectiveness in the attachment process
Solution Approach 2:
An axial protrusion is added to the plate that fits into a corresponding hole in the sanding disk. This curved/rounded feature provides automatic centering of the disk on the plate, ensuring proper alignment while maintaining simple manufacturing
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 quick and simple disk changes with improved surface adaptation and reduced machine vibrations, ensuring efficient operation on rounded surfaces without interfering with the abrasive surface.
Implementation Method 1
forming between both an attachment system through Velcro-type hooks and loops
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The invention relates to a sanding head adaptable to an orbital grinder, having a plate (1) provided on its front face with an end (11) incorporating an inner threaded area (12) into which it screws and is fixed to the shaft (31) of the machine (3), and on its front face it has a peripheral discoid surface (14) forming the contact mechanical attachment means for a sanding disk (2), formed by a Velcro-type hook and loop system. The plate (1) likewise has, in the center of said front face, an axial protrusion (15) extending until being located inside a hole (22) existing in the center of the sanding disk (2), in which it is adapted facilitating its centering and securing.