Angled Deburring Blade for Intersecting Borehole Edges
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Solution Overview
Problem
Deburring tools face challenges when dealing with intersecting boreholes, particularly when the deburring blade encounters interfering contours, leading to a risk of breakage due to lack of deflecting torque, especially when the blade is perpendicular to the bore's inner circumference.
Innovation Solution
The deburring blade is positioned at an angle deviating from the traditional 90-degree pivot, with a backstop mechanism preventing it from returning to the neutral position, ensuring it can deflect and avoid interference contours, thus preventing breakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the deburring blade is positioned perpendicular to the bore's inner circumference (90-degree pivot position), then the blade can effectively remove material, but the blade runs the risk of breaking when encountering interfering contours due to lack of deflecting torque
Solution Approach 1:
The patent applies asymmetry by positioning the deburring blade at an angled position relative to the longitudinal axis of the base body, rather than perpendicular (90 degrees). This asymmetric angular position creates a permanent deflecting torque that prevents the blade from running into interfering contours, thereby reducing breakage risk while maintaining deburring effectiveness
Solution Approach 2:
The patent implements preliminary action by pre-positioning the blade in an angled rest position before operation begins. The blade is spring-loaded and held in this angled position by a backstop mechanism, so that when the blade encounters an interfering contour, the deflecting torque is already present to prevent breakage rather than waiting for the problem to occur
2Adaptability or versatility
If the deburring blade is spring-loaded and pivotable about a pivot point, then the blade can adapt to bore edges, but the blade cannot deflect when encountering interfering contours, leading to imminent breakage
Solution Approach 1:
The patent modifies the symmetric 90-degree pivot position by introducing an asymmetric angular position. The blade remains pivotable for adaptability but is biased by a spring mechanism to rest at an angled position, creating inherent asymmetry that provides deflecting torque against interfering contours
Solution Approach 2:
The patent changes the angular parameter of the blade position from 90 degrees to an angled position. This parameter change is maintained through a backstop mechanism that prevents the blade from returning to the neutral 90-degree position, ensuring the deflecting torque parameter remains active during operation
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 approach allows for safe and reliable deburring of intersecting boreholes by maintaining deflecting forces, preventing blade breakage and ensuring effective edge removal without risking tool damage.
Implementation Method 1
a bending spring (30), whose other end acts on the knife holder (20), is clamped on the base body part (16)
Data Source
Figure 1
Figure 1a
Figure 1b
AI summary
Deburring tool with deburring blade (9) for deburring bore edges with straight or non-circular shape, consisting of a base body rotatably driven about its longitudinal axis, at the lower end of which at least one blade holder (20) with at least one deburring blade (9) attached thereto is pivotably mounted vertically on a blade bearing (27) on the base body, and on the outer circumference of the blade holder (20) a control groove (31) open radially outwards is arranged, into which the free bendable end of a bending spring (30) engages, the other end of which is clamped on the base body, wherein during the deburring process the deburring blade (9) is extended from the base body by an angle (51, 52,53) is pivoted out to the longitudinal axis of the base body and the knife axis (55) of the deburring knife (9) with its at least one cutting edge rests against the bore edge to be deburred under spring pressure and, when the deburring tool is rotated, performs spring-loaded pivoting movements following the contour of the bore edge, wherein the deburring knife (9) in the rest position pivoted out of the base body forms an angled pivot position (52, 53) with its knife axis which deviates from the 90 degree position and that the deburring knife (9) is assigned a backstop which prevents it from pivoting back into the position pivoted 90 degrees out of the base body.