Modular Oil Cooling Control for Machine Tool Temperature Stability
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Solution Overview
Problem
Existing temperature control devices for machine tools face challenges in responding quickly to changes in cooling capacity requirements due to machine tool specifications, leading to potential delays in cooling and instability during heavy cutting operations.
Innovation Solution
A temperature control device for machine tools that utilizes a modular oil control system with multiple oil control modules connected in parallel, each with a tank, pump, and cooler, synchronized by a machine body temperature sensor, allowing for easy addition or removal of modules to adjust cooling capacity in response to changes in machine tool specifications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If cooling capacity is controlled only by spindle rotation speed, then the control system is simple, but the cooling capacity may be insufficient during heavy cutting operations
Solution Approach 1:
The patent introduces a feedback control mechanism where the actual spindle temperature is measured by a temperature sensor and compared with the target temperature. The second liquid temperature regulator adjusts its cooling capacity based on the temperature deviation to ensure the spindle temperature reaches the target value, resolving the issue of insufficient cooling capacity during heavy cutting operations.
Solution Approach 2:
The patent makes the cooling capacity dynamic by introducing a second liquid temperature regulator that can adjust its cooling output in real-time based on actual temperature conditions. This allows the system to adapt cooling capacity to varying operational demands, particularly during heavy cutting operations where cooling requirements exceed pre-calculated values.
2Reliability
If a single large oil controller is used, then the cooling capacity is sufficient, but the system cannot be easily adjusted when machine tool specifications change
Solution Approach 1:
The patent divides the oil controller into multiple independent oil control modules (first liquid temperature regulator, second liquid temperature regulator, etc.), each capable of providing a portion of the total cooling capacity. These modules are connected in parallel to the machine tool, allowing individual modules to be added or removed based on changing cooling requirements, thus providing both sufficient cooling capacity and easy adaptability.
Solution Approach 2:
Each oil control module is designed as a universal unit that can independently provide cooling capacity and be integrated into the system. The modules can serve different functions depending on operational requirements, and their parallel connection allows the system to universally handle various cooling capacity requirements through simple module addition or removal.
3Adaptability or versatility
If multiple oil control modules are connected in parallel, then the system is easily adjustable, but the cooling oil temperature may be non-uniform across modules
Solution Approach 1:
The patent merges the cooling oil flow paths of multiple oil control modules through a common circulation system. The cooling oil flows from each module's cooler through a shared return line back to the machine tool, ensuring that all modules operate with uniform temperature conditions and achieving stable temperature control across the entire system.
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 modular system enables immediate adjustment of cooling capacity without the need for large-scale replacements, ensuring stable temperature control and energy efficiency by synchronizing cooling oil temperatures across modules, thus improving response times and reducing costs.
Implementation Method 1
a cooler for lowering the temperature of the cooling oil
Implementation Method 2
a pump for circulating the cooling oil
Data Source
AI summary
A temperature control device includes a machine body temperature sensor which measures a machine body temperature at a portion separated from a spindle device, a return oil temperature sensor which measures a temperature of cooling oil which circulates in a machine tool and which is collected by the temperature control device, an oil controller which includes at least two oil control modules, each having a cooler and which control the temperature of the cooling oil so that the temperature of the cooling oil detected by the return temperature sensor is synchronized with a reference temperature set based on a machine body temperature, in which tanks thereof communicate with each other, and the at least two oil control modules are connected in parallel to the machine tool, and a piping connection manifold for uniformizing convergence of the cooling oil to the machine tool and branching to each of the oil control modules.