Combined Processing Tool Integrating Skiving, Burnishing, and Dimple Forming
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Solution Overview
Problem
Conventional combined processing tools require multiple tools and processes to perform cutting, burnishing, and dimple forming on inner surfaces, leading to increased manpower and costs.
Innovation Solution
A combined processing tool integrating a skiving unit, a burnishing unit, and a dimple forming unit on a single tool, with a mandrel featuring a concave and convex shape area that allows for simultaneous cutting, burnishing, and dimple forming in a single stroke, utilizing rolling and surface compression members that alternate to engage with the tool's surface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple separate tools are used for cutting, burnishing, and dimple forming, then each process can be performed with dedicated equipment, but the processing time and manpower increase
Solution Approach 1:
The patent combines three separate processing functions (cutting via skiving unit, burnishing via burnishing unit, and dimple forming via dimple forming unit) into a single integrated tool that can perform all operations simultaneously during one machining pass, thereby eliminating the need for multiple separate tools and operations
Solution Approach 2:
The tool is designed with multi-functional capability where a single tool body houses multiple units that perform different operations (skiving, burnishing, dimple forming) on the workpiece inner surface, allowing one tool to replace three separate specialized tools
2Reliability
If multiple separate tools are used for cutting, burnishing, and dimple forming, then each process can be performed with dedicated equipment, but the equipment cost and manpower increase
Solution Approach 1:
The patent combines three separate processing functions (cutting via skiving unit, burnishing via burnishing unit, and dimple forming via dimple forming unit) into a single integrated tool that can perform all operations simultaneously during one machining pass, thereby eliminating the need for multiple separate tools and operations
Solution Approach 2:
The tool is designed with multi-functional capability where a single tool body houses multiple units that perform different operations (skiving, burnishing, dimple forming) on the workpiece inner surface, allowing one tool to replace three separate specialized tools
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 integrated tool achieves a high-durability, excellent sliding property finish on workpieces while reducing processing manpower and improving productivity by performing all operations within a single stroke.
Implementation Method 1
a burnishing unit (5) configured to perform a burnishing to an inner peripheral surface of a workpiece by rolling members held in the frame
Implementation Method 2
a dimple forming unit (6) configured to perform a dimple forming to the inner peripheral surface of a workpiece by surface compression members
Implementation Method 3
a dimple forming unit (6) configured to perform a dimple forming to the inner peripheral surface of a workpiece by surface compression members which are held in the frame so as to universally appear from and disappear in the frame
Implementation Method 4
the concave parts and the convex parts are alternately engaged in the surface compression members with being rotated
Data Source
AI summary
A combined processing tool includes a shank of a cylindrical shape, a mandrel fixed to the shank, a frame rotation-universally fitted outside the mandrel, a burnishing unit for performing a burnishing to an inner peripheral surface of a workpiece by rolling members, a dimple forming unit for performing a dimple forming to the surface of the workpiece by surface compression members so as to universally appear from and disappear in the frame, a body fixed to a top portion of the shank, and a skiving unit for performing a cutting, wherein, on an outer peripheral region of the mandrel, an outer peripheral surface 31c and a concave and convex shape area which consists of concave parts and convex parts alternately arranged along an outer peripheral direction of the mandrel are formed, and wherein the concave and convex parts are alternately engaged in the compression members with being rotated.