Cutting Fluid Flow Passages for Machine Tool Thermal Stability
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Solution Overview
Problem
Conventional methods for suppressing thermal displacement in machine tools are inadequate, especially during sudden changes in ambient temperature, and require costly adjustments and warming-up operations, with existing techniques failing to effectively manage temperature differences between cutting fluids and machine tools.
Innovation Solution
A cutting fluid supplying device with a simple configuration that includes cutting fluid flow passages penetrating through or on the structure body of the machine tool, allowing heat exchange between the cutting fluid and the machine tool components, and temperature control devices to maintain the cutting fluid temperature identical to the machine tool's structure body, thereby suppressing thermal displacement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a thermal displacement compensation program using temperature sensors is used, then thermal displacement can be compensated, but the cost increases due to temperature sensors and program adjustment costs
Solution Approach 1:
The patent introduces cutting fluid as an intermediary thermal medium that circulates through heat exchange passages in contact with the structure body. The cutting fluid acts as a mediator to transfer heat between the machine tool structure and the machining area, enabling passive thermal compensation without requiring temperature sensors or complex control programs.
Solution Approach 2:
The cutting fluid system performs dual functions: it cools the machining area and simultaneously serves as a thermal management system for the structure body. The heat exchange passages allow the cutting fluid to automatically regulate the structure temperature without external control, making the system self-regulating and eliminating the need for additional sensing and control equipment.
2Manufacturing precision
If the temperature of cutting fluid is made identical to the machine tool temperature, then thermal displacement from cutting fluid temperature difference is prevented, but thermal displacement from machine tool temperature change itself cannot be suppressed
Solution Approach 1:
The patent changes the thermal parameter of the cutting fluid by circulating it through heat exchange passages that thermally couple it to the structure body. This allows the cutting fluid temperature to dynamically track the structure body temperature, maintaining thermal equilibrium even during ambient temperature changes or seasonal variations, thereby suppressing thermal displacement from both temperature differences and temperature changes.
3Manufacturing precision
If thermal displacement compensation is performed using conventional methods, then some thermal displacement is compensated, but sudden changes in ambient temperature require warming-up operations and program adjustments
Solution Approach 1:
The heat exchange passages are pre-installed within the structure body, creating a built-in thermal management infrastructure. This preliminary structural integration allows the cutting fluid to immediately begin thermal regulation when circulation starts, eliminating the need for warming-up operations and enabling immediate thermal compensation even during sudden ambient temperature changes.
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 device effectively suppresses thermal displacement in machine tools by maintaining the temperature of the cutting fluid in sync with the machine tool's structure, reducing the need for costly adjustments and warming-up operations, and ensuring precise temperature control across the machine tool's components.
Implementation Method 1
The cutting fluid flow passage is disposed to penetrate through or disposed on an outer surface of the structure body so as to allow heat exchange between the cutting fluid and the structure body
Implementation Method 2
allow heat exchange between the cutting fluid and the structure body
Implementation Method 3
heat exchange between the cutting fluid and the structure body
Data Source
AI summary
A cutting fluid supplying device for a machine tool includes a machine tool having a structure body including a bed, a column disposed on the bed, and a spindle head disposed to the column and at least one of the ejection ports for ejecting a cutting fluid. The cutting fluid supplying device for a machine tool further includes a storage tank for storing the cutting fluid to be supplied to the machine tool, at least one of the cutting fluid flow passages for connecting the storage tank and the at least one of the ejection ports, and at least one of the pumps for applying pressure to the cutting fluid to supply the cutting fluid stored in the storage tank to the at least one of the cutting fluid flow passages. The at least one of the cutting fluid flow passages is disposed to penetrate through or disposed on an outer surface of the structure body so as to allow heat exchange between the cutting fluid and the structure body.