Spindle Cover Gap Layout to Prevent Chip Adhesion
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Solution Overview
Problem
The adhesion of chips to the gap between the main shaft and the housing in cutting apparatuses interferes with the rotation of the main shaft, causing machining difficulties.
Innovation Solution
A spindle design with a gap located laterally to the main shaft, where the cover is positioned at a distance from the main shaft, reduces chip adhesion by utilizing centrifugal force to move chips away from the rotation axis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the gap between the main shaft and the cover is located farther away from the main shaft, then the structural stability is improved, but chip adhesion to the gap increases
Solution Approach 1:
The patent utilizes the centrifugal force generated by the rotating main shaft to move chips away from the gap between the main shaft and the cover. The rotation of the main shaft creates a centrifugal effect that naturally propels chips outward, preventing them from adhering to the gap. This converts the rotational motion (which could potentially cause chip adhesion) into a beneficial force that actively prevents chip accumulation.
2Object-generated harmful factors
If the gap between the main shaft and the cover is located closer to the main shaft, then chip adhesion is reduced, but the structural stability deteriorates
Solution Approach 1:
The patent employs the centrifugal force generated by the rotating main shaft to move chips away from the gap between the main shaft and the cover. The rotation of the main shaft creates a centrifugal effect that naturally propels chips outward, preventing them from adhering to the gap. This converts the rotational motion (which could potentially cause chip adhesion) into a beneficial force that actively prevents chip accumulation.
3Productivity
If chips adhere to the gap between the main shaft and the housing, then the rotation of the main shaft is interfered with, but machining efficiency is maintained
Solution Approach 1:
The patent utilizes the centrifugal force generated by the rotating main shaft to move chips away from the gap between the main shaft and the cover. The rotation of the main shaft creates a centrifugal effect that naturally propels chips outward, preventing them from adhering to the gap. This converts the rotational motion (which could potentially cause chip adhesion) into a beneficial force that actively prevents chip accumulation.
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 design effectively prevents chip adhesion, ensuring smooth rotation of the main shaft and maintaining machining efficiency by positioning the gap closer to the main shaft, reducing chip accumulation.
Implementation Method 1
When the main shaft and the cover rotate together, a centrifugal force generated by the rotation of the main shaft causes chips adhering to the cover to move outward.
Data Source
AI summary
A spindle includes a housing including a first opening, a bearing housed in the housing, a main shaft rotatably supported by the bearing, a collet chuck in a first through hole defined in the main shaft to grip a machining tool and being movable in an axial direction of the main shaft, a draw bar connected to the collet chuck, and a cover covering the first opening and including a second through hole through which the main shaft is disposed. The main shaft and the cover are disposed at a distance from each other.