Pressure-fit Grinding Pad Assembly for Floor Grinders
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing grinding pad assembly methods for concrete surfaces are time-consuming, costly, and prone to failure due to the braising process, which reduces the life of abrasive pads and requires complex alignment, and they lack flexibility in pad shape and configuration.
Innovation Solution
A pressure-fit grinding pad assembly that secures the abrasive pad to a metal attachment base, which is then connected to a grinding disc using through bores and a press, allowing for easy replacement and various pad configurations without braising, utilizing friction and centrifugal force for securement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the braising process is used to secure abrasive pads to the mounting base, then strong bond strength is achieved, but the assembly time becomes too long (five minutes or more per base)
Solution Approach 1:
The patent replaces the thermal braising process with a mechanical press-fit system. Through bores are formed in the mounting base, and attachment bases of pads are inserted and secured mechanically using press-fit or interference fit methods, eliminating the need for thermal processing and significantly reducing assembly time while maintaining secure attachment.
Solution Approach 2:
The mounting base is segmented with multiple through bores that allow individual pad attachment bases to be inserted and secured independently. This segmentation enables parallel assembly operations and simplifies the attachment process for each pad, contributing to faster assembly rates.
2Strength
If the braising process is used to secure abrasive pads, then pads are firmly attached, but the intense heat reduces the life of the abrasive pads by graphitizing the diamond chips
Solution Approach 1:
The patent eliminates the thermal braising process that causes graphitization of diamond chips by substituting it with a mechanical press-fit attachment system. This preserves the integrity and lifespan of the abrasive pads while still achieving secure attachment through mechanical means in the through bores.
3Strength
If the braising process is used with complex pad shapes, then pads can be securely attached, but the operation becomes more difficult and time consuming
Solution Approach 1:
The mounting base incorporates through bores that accommodate various pad attachment base shapes. This segmented approach with standardized bore locations allows different shaped pads to be attached using the same fundamental method, simplifying the manufacturing process for complex pad geometries.
Solution Approach 2:
Through bores are pre-formed in the mounting base before pad attachment. This preliminary preparation simplifies the subsequent pad attachment process, allowing various shaped pads to be quickly inserted and secured without complex braising operations, regardless of pad shape complexity.
4Ease of operation
If through bores are used for pressure-fit connection, then pad replacement becomes quick and easy, but the mounting base requires precise bore formation
Solution Approach 1:
Through bores are pre-formed in the mounting base with precise dimensions and locations during base manufacturing. This preliminary precision work enables quick and easy pad replacement operations later, as the pre-prepared bores guide proper alignment and fit of the attachment bases without requiring complex alignment procedures during replacement.
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
This method reduces assembly time and costs, enhances pad durability by avoiding heat damage, and allows for quick replacement and configuration of pads with different shapes and grits, improving the overall efficiency and reliability of the grinding process.
Implementation Method 1
dimensioned for pressure fit connection into the inner surface of the mounting base by the use of a press exerting a pressure sufficient to fully engage the attachment metal base in the through bore to prevent removal
Implementation Method 2
held secured therein by friction and the centrifugal force of the grinding disc when rotatably driven
Implementation Method 3
held secured therein by friction and the centrifugal force of the grinding disc when rotatably driven
Data Source
AI summary
A pressure-fit grinding pad assembly and a method of constructing same and connection to a grinding pad of a floor grinding machine or other suitable type grinding machines is described. The grinding pad is formed by an abrasion head of abrasion material which is immovably bonded on a metal attachment base which is shaped for pressure fit connection to a mounting base and wherein its removal therefrom requires it to be pressure punched with adequate force. The mounting base can be a steel plate shaped for connection to retainers secured to or formed in an outer surface of a grinding disc or may be constituted by holes formed in the top surface of the grinding disc. The mounting base can be formed integrally with the attachment base of the grinding pad for connection to the retainers.