Cutting Tool Fixing Member With Low-Pressure-Loss Coolant Inlet
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Solution Overview
Problem
The existing fixing members in cutting tools face challenges in delivering coolant effectively due to the small cross-sectional area of the flow path, resulting in high pressure loss and inadequate coolant discharge at the cutting location.
Innovation Solution
The fixing member is designed with a fitting protrusion that has an inlet port on its outer peripheral surface, allowing for a larger diameter and reducing pressure loss. This configuration ensures smooth coolant delivery and discharge from the discharge port onto the cutting location.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the inlet port is formed in the end surface of the fitting protrusion, then the structure is simple, but the diameter is small causing large pressure loss
Solution Approach 1:
The inlet port is relocated from the end surface (one-dimensional surface) to the outer peripheral surface (two-dimensional surface) of the fitting protrusion. This dimensional transition enables a significantly larger port diameter, reducing pressure loss while maintaining structural simplicity through the integrated protrusion design.
2Ease of manufacture
If the inlet port is formed in the end surface of the fitting protrusion, then the manufacturing is easy, but the cross-sectional area is small reducing coolant delivery efficiency
Solution Approach 1:
By forming the inlet port on the outer peripheral surface rather than the end surface, the available cross-sectional area for coolant flow is dramatically increased. This dimensional repositioning allows sufficient coolant quantity to be delivered to the cutting location without complicating the manufacturing process.
3Volume of moving object
If the inlet port is formed in the end surface of the fitting protrusion, then the design is compact, but the pressure loss is large making it difficult to discharge coolant appropriately
Solution Approach 1:
The inlet port is positioned on the outer peripheral surface of the fitting protrusion, utilizing the circumferential space rather than the limited end surface area. This enables a larger diameter port that reduces pressure loss, while the overall compact design is maintained through the integrated protrusion structure.
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 increased diameter of the inlet port reduces pressure loss, enabling efficient coolant delivery and discharge, which effectively cools and lubricates the cutting location, improving the cutting process.
Implementation Method 1
the diameter of the inlet port can be increased in comparison with the configuration in which the inlet port of the flow path is formed in the end surface of the fitting protrusion. With such configuration, it is possible to reduce a pressure loss of the fluid that is delivered from the supply path of the tool body into the flow path
Implementation Method 2
The flow path may include an introduction flow path on the inlet port side, a discharge flow path on the discharge port side, and a fluid reservoir provided between the introduction flow path and the discharge flow path, the fluid reservoir having a flow path whose cross-sectional area is larger than the introduction flow path and the discharge flow path
Data Source
AI summary
A fixing member that presses and fixes a cutting insert disposed on an insert mounting part of a tool body, the fixing member including: a fixing member body that has a pressing part for pressing the cutting insert; a fitting protrusion that is provided so as to protrude from a bottom part of the fixing member body, the fitting protrusion being fitted in a fitting hole formed in the tool body; and a coolant introduction flow path, a coolant discharge flow path and a coolant reservoir that guide a coolant delivered from a coolant branch flow path of the tool body to a discharge port formed in a leading end of the fixing member body so as to be discharged therefrom, wherein an inlet port of the coolant introduction flow path which communicates with an outlet port of the coolant branch flow path of the tool body is formed in an outer peripheral surface of the fitting protrusion.