Cutting Blade Coolant Channel Layout for Low Pressure Loss
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Solution Overview
Problem
Existing blade designs with straight coolant supply paths suffer from pressure loss and inefficiency in coolant delivery to machining areas, leading to reduced cooling and lubrication effectiveness.
Innovation Solution
A blade design featuring curved coolant supply paths with gradually decreasing cross-sectional areas and elliptical or long hole shapes, along with a chamber for coolant accumulation and fillet portions to reduce entrance losses, ensures efficient coolant delivery and reduced pressure loss.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If straight coolant supply paths are used, then manufacturing is simple, but pressure loss increases and coolant delivery efficiency deteriorates
Solution Approach 1:
The coolant supply paths are designed with curved shapes instead of straight lines. The first coolant supply path includes a curved section, and the second coolant supply path includes another curved section. This curvature allows the coolant to flow more smoothly with reduced turbulence and pressure loss, while still being manufacturable through appropriate machining or forming processes.
2Ease of manufacture
If straight coolant supply paths are used, then manufacturing is simple, but coolant delivery efficiency to machining area deteriorates
Solution Approach 1:
The curved sections in the coolant supply paths enable more efficient coolant delivery to the machining area. The curvature is designed to guide the coolant flow directly toward the cutting insert region, reducing diffusion and ensuring concentrated coolant delivery where it is most needed, thereby improving productivity.
3Ease of manufacture
If coolant supply paths have uniform cross-sectional area, then manufacturing is simple, but flow speed and cooling efficiency deteriorate
Solution Approach 1:
The coolant supply paths have varying cross-sectional areas along their length. The cross-sectional area is larger near the supply inlet and gradually decreases toward the discharge ports. This non-uniform geometry accelerates the coolant flow speed as it approaches the machining area, improving cooling efficiency while remaining manufacturable through controlled machining processes.
4Temperature
If coolant is discharged through multiple ports, then cooling coverage is improved, but coolant flow is diffused as mist
Solution Approach 1:
The curved coolant supply paths guide the coolant flow smoothly to multiple discharge ports positioned near the cutting insert. The curvature maintains coherent flow until the discharge points, preventing premature diffusion into mist. This ensures that coolant is delivered effectively to multiple locations for comprehensive cooling coverage.
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 design enhances coolant flow speed and reduces pressure loss, improving cooling and lubrication efficiency at machining sites, thereby extending the life of cutting inserts and preventing abrasion.
Implementation Method 1
bifurcation parts 5a and bent parts 5b at intersections of the coolant supply path 4 have shapes that are likely to cause flaking of the flow of the coolant and generate a pressure loss
Implementation Method 2
the cross-sectional area of each coolant supply path gradually decreases from the supply inlet toward the corresponding discharge port. Thus, the flow speed of the coolant flowing through the coolant supply path can be increased
Implementation Method 3
coolant supplied through the supply inlet can be discharged through the plurality of coolant supply paths from the plurality of discharge ports opened at the end face nearby the insert attachment portion. Accordingly, a machining place of an object fabricated by the cutting insert attached to the insert attachment portion can be cooled and lubricated with the coolant
Implementation Method 4
a machining place of an object fabricated by the cutting insert attached to the insert attachment portion can be cooled and lubricated with the coolant
Data Source
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AI summary
A blade in which coolant can be efficiently supplied to a machining place with a reduced pressure loss is provided. In a blade 100 in which a cutting insert 13 is attached to an insert attachment portion 12 provided at a longitudinal end part of a blade body 11 formed in a long plate shape, the blade body 11 includes a supply inlet 51 opened at one side surface, a lower discharge port 53 and an upper discharge port 54 that are opened at an end face nearby the insert attachment portion 12, a lower coolant supply path 55 connecting the supply inlet 51 to the lower discharge port 53, and an upper coolant supply path 56 connecting the supply inlet 51 to the upper discharge port 54, and the lower coolant supply path 55 and the upper coolant supply path 56 each have a curved shape in a side view.