Roller Burnishing Tool Automatic Diameter Adjustment
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Solution Overview
Problem
Existing roller burnishing tool devices have complex structures, leading to large housing sizes and maintenance difficulties due to the need for adjustable mechanisms and consumable flexible rollers, which restrict their application and usability in various processing machines.
Innovation Solution
A roller burnishing tool device with a simplified structure featuring a tool diameter following mechanism, including a shank, housing, roller support member, tapered rollers, mandrel, and a pin member that moves spirally along a lead groove, allowing for automatic adjustment of pressing force and tool diameter to accommodate variations in workpiece diameters, eliminating the need for flexible rollers within the housing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If an adjustment spring mechanism and displacement mechanism are used to automatically follow tool diameter variations, then the tool can automatically cope with hole diameter variation, but the housing structure becomes complex and the outer size increases
Solution Approach 1:
The invention extracts the displacement mechanism from the housing structure and relocates it to the tool body. The tool body itself is made adjustable in the axial direction relative to the housing, eliminating the need for a separate displacement mechanism within the housing. This reduces housing complexity while maintaining the automatic tool diameter following capability.
Solution Approach 2:
The tool body serves multiple functions: it supports the burnishing rollers, acts as part of the tool diameter following mechanism through its adjustability, and provides the structural connection to the processing machine via the shank. This multi-functionality reduces the need for separate components and simplifies the overall housing structure.
2Adaptability or versatility
If flexible rollers are used in the displacement mechanism, then automatic tool diameter following is achieved, but maintenance becomes difficult due to complex housing structure and consumable roller replacement
Solution Approach 1:
The invention replaces the consumable flexible rollers with a durable, non-consumable tool body that has built-in adjustability. The tool body can be adjusted and reused without replacement, eliminating the need for periodic roller replacement and simplifying maintenance significantly.
Solution Approach 2:
The tool body has built-in adjustability through its connection to the processing machine, allowing it to automatically follow tool diameter variations without requiring external displacement mechanisms or consumable components. This self-adjusting capability reduces maintenance requirements.
3Adaptability or versatility
If a large housing is used to accommodate the displacement mechanism, then automatic tool diameter following is possible, but the attachable processing machine options are restricted
Solution Approach 1:
The invention extracts the displacement function from the housing and relocates it to the tool body, which has a much smaller volume. This allows the housing to be compact while still achieving automatic tool diameter following through the adjustable tool body connected to the processing machine.
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 solution enables a compact, easily maintainable tool device that can produce uniform, high-quality finishes with improved sliding characteristics by automatically adjusting pressing force and tool diameter, enhancing the tool's applicability across various processing machines.
Implementation Method 1
a lead groove formed spirally in the hollow cylindrical portion, the lead groove being configured to pass through the hollow cylindrical portion; a pin member disposed so as to be capable of moving spirally along the lead groove
Implementation Method 2
a biasing unit attached to the shank and biasing the mandrel forward
Implementation Method 3
rollers having tapered shapes and supported by the roller support member; a mandrel having a tapered portion matched with the tapered shapes of the rollers
Data Source
Figure 1
Figure 2
Figure 3A~3C
AI summary
Provided is a roller burnishing tool device (1) including a shank (2); a housing (3) connected to the shank, a connected position of the housing relative to the shank being adjustable; a roller support member (5) supported to be capable of rotating relative to the housing and attached to follow a movement of the housing in a case of adjusting the connected position; tapered rollers (51) supported by the roller support member; a mandrel (6) having a tapered portion (61b) matched with the tapered rollers and movable relative to the roller support member; and a tool diameter following mechanism (8) connecting the shank and the mandrel, having a lead groove (24) formed spirally in a front portion of the shank, a pin member (81) capable of moving along the lead groove, a pin member insertion hole (62b) formed in the mandrel to insert the pin member therein, and a biasing unit (82) biasing the mandrel forward.