Grinding Wheel Bolt Mounting for Rapid Replacement
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Solution Overview
Problem
Existing grinding apparatuses require complex modifications and changes to the mount disk and motor controller settings when replacing worn grinding wheels, leading to time-consuming processes and potential need for spindle replacement.
Innovation Solution
A grinding apparatus design featuring a mount disk with internally threaded holes and protrusions, combined with a grinding wheel having an annular base and insertion holes, allows for easy bolt-fastening without modifying the mount disk, eliminating the need for suction forces and motor controller adjustments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a complex fastening mechanism (such as wedge engagement with multiple chuck claws or wheel engaging member) is used to facilitate grinding wheel replacement, then the ease of operation is improved, but the device complexity increases and the mount disk becomes heavier
Solution Approach 1:
The fastening function is segmented into multiple bolts distributed around the mount disk, each independently fastening the grinding wheel. This distributes the fastening load and simplifies the overall structure compared to a single complex fastening mechanism.
Solution Approach 2:
Instead of using a complex mechanism to hold the grinding wheel in place, the invention uses simple bolts that thread into the mount disk. The mount disk provides the threaded holes and protrusions for bolt engagement, inverting the traditional approach where the grinding wheel would have complex fastening features.
2Ease of operation
If the mount disk is modified to incorporate a complex fastening mechanism, then the ease of operation is improved, but the weight of the mount disk increases
Solution Approach 1:
The invention uses simple, inexpensive bolts as the fastening mechanism rather than a permanent, complex integrated mechanism. The bolts can be easily replaced or adjusted without modifying the mount disk structure, keeping the mount disk lightweight.
3Ease of operation
If the mount disk is modified to incorporate a complex fastening mechanism, then the ease of operation is improved, but the time required for modification increases
Solution Approach 1:
The mount disk is pre-designed with threaded holes and protrusions that guide the bolts into the correct positions. This preliminary structural design eliminates the need for time-consuming modifications during grinding wheel replacement, as the fastening features are already in place.
4Ease of operation
If the mount disk is modified to incorporate a complex fastening mechanism, then the ease of operation is improved, but the reliability of the spindle system decreases due to potential need for spindle replacement
Solution Approach 1:
The fastening system is segmented into removable bolts rather than an integrated mechanism. This allows the grinding wheel to be replaced without affecting the spindle or mount disk integrity, maintaining spindle system reliability while enabling easy grinding wheel replacement.
Data Source
AI summary
A grinding apparatus has a grinding wheel fastened to a mount disk connected a spindle by a plurality of bolts. The mount disk has at least three threaded holes and a plurality of protrusions protruding from a mount surface thereof. Each of the bolts includes an externally threaded shank, a neck coupled to the externally threaded shank, and an engaging flange coupled to the neck and extending radially outwardly. The grinding wheel includes an annular open hole defined in a mating surface of an annular base for mating with the mount surface, an annular slot that is wider than the annular open hole and is fluidly connected to the annular open hole, at least three insertion holes in the annular open hole for allowing the engaging flange to be inserted into the annular slot, and a plurality of protrusion insertion holes for receiving the engaging flanges of the bolts.