Multifunction Drill Tip for One-Setup Hole and Groove Machining
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Solution Overview
Problem
The existing methods for coupling tubes to plates in industrial heat exchangers require multiple precise operations, such as drilling, boring, and milling, which are time-consuming and inefficient due to the need for multiple tools and frequent repositioning, leading to economic and industrial burdens.
Innovation Solution
A multi-function bit with a pair of radial milling inserts and centering milling inserts arranged to perform concentric and circular milling operations without the need for frequent tool repositioning, allowing for simultaneous execution of multiple machining operations, including drilling, radial milling, and centering, using a single device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If multiple separate tools are used for drilling, boring, and milling operations, then each operation can be performed with specialized equipment, but the processing time increases significantly due to frequent tool repositioning and relocation
Solution Approach 1:
The patent combines multiple separate machining tools (drilling tool, boring tool, and milling tools) into a single multifunctional bit. This bit integrates a drill bit portion, a boring portion, and multiple milling portions with different radii, all in one device. This merging eliminates the need for frequent tool changes and repositioning, directly resolving the contradiction by maintaining precision while dramatically improving processing speed.
Solution Approach 2:
The multifunctional bit is designed to perform multiple machining operations simultaneously - drilling, boring, and concentric milling - with a single tool. The bit includes a drill bit for creating holes, a boring portion for enlarging holes, and multiple milling portions for creating grooves at different radii. This multi-functionality allows one tool to replace several specialized tools, resolving the productivity issue while maintaining manufacturing precision through integrated design.
2Manufacturing precision
If multiple machining operations are performed sequentially with different tools, then each operation can be optimized independently, but the overall processing time and operational complexity increase
Solution Approach 1:
The patent merges drilling, boring, and milling operations into a single multifunctional bit that can perform all operations in one positioning. The bit includes a drill bit portion for hole creation, a boring portion for hole enlargement, and multiple milling portions for groove formation, all integrated into one tool that eliminates repeated positioning and repositioning time.
Solution Approach 2:
The multifunctional bit is designed with all necessary cutting elements (drill bit, boring portion, milling portions) pre-integrated and pre-positioned relative to each other. This preliminary arrangement of all machining functions in one tool allows sequential operations to occur without intermediate tool changes, directly reducing the time loss associated with tool repositioning while maintaining positioning accuracy.
3Productivity
If a single multifunctional bit is used to perform multiple operations, then processing efficiency improves, but the device complexity increases
Solution Approach 1:
The multifunctional bit is segmented into distinct functional portions: a drill bit portion for drilling, a boring portion for enlarging holes, and multiple milling portions with different radii for creating grooves. Each portion is designed independently but integrated into a single bit structure. This segmentation allows the complex multifunctional bit to be manufactured and maintained more easily while still achieving high processing efficiency through its multiple functions.
4Manufacturing precision
If frequent tool repositioning is required for different operations, then precise positioning can be achieved for each tool, but the overall processing time and operational burden increase
Solution Approach 1:
The patent combines multiple precision machining tools into one multifunctional bit, eliminating the need for repeated positioning and repositioning operations. The integrated design maintains machining accuracy through precise relative positioning of all cutting elements while dramatically simplifying operation by requiring only one tool setup per workpiece.
Solution Approach 2:
The multifunctional bit performs drilling, boring, and milling operations with a single tool, making the operation process much simpler. The bit's multiple functions are integrated into one device that can complete all necessary machining operations without requiring the operator to change tools or reposition multiple times, thus improving ease of operation while maintaining precision.
Data Source
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AI summary
Multifunction bit (1), comprising a tip (22) for realizing a hole (F) on a workpiece, such as a plate (P) and the like, having a surface (S), at least one radial milling insert (41, 42), arranged for realizing a concentric milling to said hole (F) on said surface (S) of said workpiece, and at least one centering milling insert (43, 44), arranged to realize a circular milling on the edge of said hole (F) realized by said milling insert for drilling (45, 46), wherein said multifunction bit (1) comprises at least one milling insert for drilling (45, 46) arranged on the top of said bit (22), a pair of radial milling inserts (41, 42), arranged so as to achieve two millings (Gl, G2) concentric to said hole (F), partially overlapped, so as to form a circular groove (G) having an irregular cross-section, wherein said at least one radial milling insert (41, 42) is arranged in a more advanced position than said centering milling insert (43, 44), with respect to the surface (S) of said workpiece, so that said at least one milling radial milling insert (41, 42) realizes a milling deeper than said at least one centering milling insert (43, 44).