Integrated Boring Tool Deburring Assembly for Burr-Free Holes
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Solution Overview
Problem
Conventional drilling tools often create burrs at the entrance and exit of holes, which can lead to unsightly edges, interference with fasteners, increased fatigue stress, corrosion, and require additional deburring processes, increasing manufacturing time and cost.
Innovation Solution
Integration of a deburring assembly with brush filaments into the drill bit, which can be inserted into the hole to remove burrs automatically, either in a slot within the body portion or the cutting portion, allowing for both insertion and withdrawal deburring without additional cycle time or equipment costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional boring tools are used to drill holes, then drilling function is achieved, but burrs are formed at the entrance and exit of holes requiring additional deburring processes
Solution Approach 1:
The patent combines the boring tool and deburring assembly into a single integrated device. The deburring assembly includes brush filaments positioned to contact and remove burrs at the hole entrance and exit while the boring tool is actively drilling, eliminating the need for separate deburring operations and preventing burr formation issues.
2Object-generated harmful factors
If separate deburring processes are used to remove burrs, then burr removal is achieved, but manufacturing time and cost increase
Solution Approach 1:
The deburring assembly operates continuously during the drilling process. The brush filaments are positioned to contact burrs as they form at the hole entrance and exit, allowing deburring to occur simultaneously with hole creation rather than as a separate subsequent operation, thereby maintaining continuous productive action.
Solution Approach 2:
The deburring assembly performs preliminary deburring action at the hole entrance before the workpiece fully passes through, and at the exit as material emerges. This preliminary removal of burrs prevents them from causing downstream issues and eliminates the need for post-drilling deburring operations.
3Object-generated harmful factors
If deburring is performed manually or with separate equipment, then burr removal is achieved, but additional equipment costs and operational complexity are incurred
Solution Approach 1:
The patent merges the deburring function into the boring tool itself by positioning brush filaments on the deburring assembly to contact the workpiece at the hole entrance and exit. This integration eliminates the need for separate manual or automated deburring equipment, reducing overall system complexity while maintaining effective burr removal.
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
The deburring assembly effectively removes burrs concurrently with drilling, eliminating the need for separate deburring processes and reducing manufacturing time and costs by integrating the deburring function into the drill bit.
Implementation Method 1
a deburring assembly including a plurality of brush filaments extending outwardly from the body portion or the cutting portion
Implementation Method 2
The deburring assembly may be configured to contact the workpiece at the hole entrance and/or hole exit
Data Source
AI summary
A cutting tool may include a shank having a drive end for interfacing with a powered driver, a body portion extending operably coupled to and extending away from the shank, a cutting portion extending from the body portion and sharing an axis with the shank and the body portion, the cutting portion including a plurality of cutting edges, and a deburring assembly operably coupled to the cutting portion or the body portion. The deburring assembly may be configured to be fully insertable into a hole cut by the cutting tool.