Band Saw Blade Cooling Layout for High-Speed Semi-Dry Cutting
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Solution Overview
Problem
The semi-dry cutting method using a band saw blade results in lower cooling efficiency, necessitating reduced cutting speeds to prevent blade temperature rise and extending blade life, thus requiring improvements for higher process efficiency.
Innovation Solution
A band saw machine with specific fluid supply and removal units to apply cutting fluid as a mist or fluid flow, and a scraper to remove deposits, enabling effective cooling and lubrication of the blade during high-speed cutting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If the semi-dry method is used to minimize cutting oil consumption, then product cleaning time is reduced and working environment is improved, but cooling efficiency decreases and cutting speed must be reduced
Solution Approach 1:
The invention divides the cooling function into two separate supply units: one for lubrication at the cutting point and another for cooling the blade. This segmentation allows the cutting zone to receive minimal mist for lubrication while the blade receives adequate cooling fluid, resolving the contradiction between minimal oil usage and sufficient cooling efficiency to maintain high cutting speeds
Solution Approach 2:
The invention introduces a dual-fluid supply system where cutting fluid is used as an intermediary substance in two different forms: as mist for lubrication at the cutting point and as fluid flow for cooling the blade. This intermediary approach enables the system to achieve both minimal oil adherence to products and sufficient cooling to maintain high cutting speeds
2Productivity
If cutting speed is increased to improve productivity, then process efficiency is improved, but blade temperature rises excessively and blade life is shortened
Solution Approach 1:
The invention applies cooling fluid to the blade in advance of the cutting zone and continuously during the blade's travel through the cutting area. This preliminary and continuous cooling action prevents temperature buildup that would occur with high-speed cutting, allowing increased productivity without excessive blade temperature rise
Solution Approach 2:
By separating the lubrication function (at the cutting point) from the cooling function (along the blade path), the system can apply adequate cooling fluid to maintain blade temperature within acceptable limits during high-speed operation, while using minimal mist for lubrication to enable high cutting speeds
3Duration of action of stationary object
If cutting speed is reduced to maintain blade temperature, then blade life is extended, but process efficiency decreases
Solution Approach 1:
The invention segments the fluid supply into two distinct functions: minimal mist for lubrication at the cutting point and adequate fluid flow for cooling the blade. This segmentation enables high cutting speeds that improve process efficiency while the dedicated cooling function maintains blade temperature within limits to preserve blade life
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
Enables high-speed cutting processes with reduced blade temperature and extended blade life by ensuring efficient cooling and lubrication, while minimizing oil adherence to the workpiece.
Implementation Method 1
a first supply unit arranged between a lowermost end of the second wheel and a workpiece cutting position along a travelling direction from the second wheel toward the first wheel in a rotary travel path of the band saw blade and configured to spray a cutting fluid formed in a mist
Implementation Method 2
a second supply unit arranged between the workpiece cutting position and the second wheel and configured to pour or spray the cutting fluid or a fluid for cooling over the band saw blade
Implementation Method 3
a removal unit arranged in a section of the band saw blade from a contact end edge of the second wheel to a contact start edge of the first wheel and arranged between the contact end edge of the second wheel and the first supply unit in the rotary travel path of the band saw blade, the removal unit being configured to remove a deposit adhering to the band saw blade
Data Source
AI summary
A band saw machine includes a first wheel and a second wheel arranged lower than the first wheel, the first wheel and the second wheel being configured to apply a tension to a band saw blade for tracking, a first supply unit arranged between a lowermost end of the second wheel and a workpiece cutting position along a travelling direction from the second wheel toward the first wheel in a rotary travel path of the band saw blade and configured to spray a cutting fluid in a mist or to drop the cutting fluid onto a tooth part of the band saw blade, and a second supply unit arranged between the workpiece cutting position to the second wheel and configured to pour or spray the cutting fluid or a fluid for cooling over the band saw blade.