CN109048485A - A kind of liquid nitrogen flow intelligent control cooling system suitable for sub-zero machining - Google Patents
A kind of liquid nitrogen flow intelligent control cooling system suitable for sub-zero machining Download PDFInfo
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- CN109048485A CN109048485A CN201811181076.3A CN201811181076A CN109048485A CN 109048485 A CN109048485 A CN 109048485A CN 201811181076 A CN201811181076 A CN 201811181076A CN 109048485 A CN109048485 A CN 109048485A
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- Prior art keywords
- pipeline
- liquid nitrogen
- low temperature
- driven valve
- main pipe
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
- B23Q11/10—Arrangements for cooling or lubricating tools or work
- B23Q11/1038—Arrangements for cooling or lubricating tools or work using cutting liquids with special characteristics, e.g. flow rate, quality
- B23Q11/1061—Arrangements for cooling or lubricating tools or work using cutting liquids with special characteristics, e.g. flow rate, quality using cutting liquids with specially selected composition or state of aggregation
Abstract
The present invention relates to a kind of liquid nitrogen flow intelligent control cooling systems suitable for sub-zero machining.The pipe fitting of nozzles, cryogenic flow meter, low temperature motor-driven valve, transfer pipeline, liquid nitrogen container, central processing unit and connection is rotated including infrared radiation thermometer, two.Using the temperature of infrared radiation thermometer on-line checking rake face and flank and feed back to central processing unit.Central processing unit controls the liquid nitrogen flow of each pipeline by the cryogenic flow meter and low temperature motor-driven valve that are located on upper pipeline, lower pipeline and main pipe rail according to set temperature, the final intelligent control for realizing liquid nitrogen flow.
Description
Technical field
The invention belongs to metal cutting process related fieldss, and in particular to a kind of liquid nitrogen flow intelligence suitable for sub-zero machining
Cooling system can be regulated and controled.
Background technique
The hardly possible processed and applied such as titanium alloy and high temperature alloy is widely used in the fields such as aerospace, but during its cutting
Cutting temperature is high, and acutely, the quality of workpiece surface is difficult to control the abrasion of hot environment bottom tool.The cooling effect of traditional cutting fluid
It is unsatisfactory, and cutting fluid will lead to the pollution of environment.Therefore sub-zero machining technology is come into being, can to cutting region injection liquid nitrogen
Effectively to take away the heat generated in cutting, processing quality is improved, it is also more environmentally protective.It is deposited in current sub-zero machining technology
Technical problem be the effective monitoring that cannot achieve to liquid nitrogen flow, liquid nitrogen flow is too low to be difficult to play effective cooling make
With liquid nitrogen flow is excessive to be also unable to reach better cooling effect, and leads to the waste of liquid nitrogen.
Summary of the invention
It is an object of the invention to provide a kind of environmentally friendly, saving, efficient liquid nitrogen flow intelligent control for low temperature process
Cooling system.
In order to achieve the above objectives, the technical scheme is that the system successively includes infrared radiation thermometer (1), upper pipeline
Turn to nozzle (2), upper pipeline cryogenic flow meter (3), upper pipeline low temperature motor-driven valve (4), central processing unit (5), transport pipeline
(6), liquid nitrogen container (7), lower pipeline turn to nozzle (8), lower pipeline cryogenic flow meter (9), lower pipeline low temperature motor-driven valve (10), general pipeline
Road cryogenic flow meter (11), main pipe rail low temperature motor-driven valve (12).It is characterized in that the infrared radiation thermometer (1) is responsible for real-time detection
The temperature of rake face and flank simultaneously feeds back to the central processing unit (5).The central processing unit (5) is according to the reasonable of setting
Temperature adjusts general pipeline by the combination of the main pipe rail cryogenic flow meter (11) and the main pipe rail low temperature motor-driven valve (12) first
The liquid nitrogen flow on road.Secondly by the combination tune of the upper pipeline cryogenic flow meter (3) and the upper pipeline low temperature motor-driven valve (4)
The whole upper flow for turning to nozzle (2) and spraying to rake face.Pass through the lower pipeline cryogenic flow meter (9) and the lower pipeline again
The combination adjustment of low temperature motor-driven valve (10) the lower flow for turning to nozzle (8) and spraying to flank, finally realizes liquid nitrogen flow
Intelligent control.
As the prioritization scheme of this case, the temperature of rake face and flank when the infrared radiation thermometer (1) can detecte cutting
Degree, feeds back information to the central processing unit (5).
As the prioritization scheme of this case, the upper pipeline turns to nozzle (2) and lower pipeline steering nozzle (8), can be with
It flexibly turns to, respectively by liquid nitrogen spray in rake face and flank.
As the prioritization scheme of this case, the upper pipeline cryogenic flow meter (3), the lower pipeline cryogenic flow meter (9), institute
Stating main pipe rail cryogenic flow meter (11) can be with the liquid nitrogen flow in real-time detection upper pipeline, lower pipeline and main pipe rail, by information reality
When feed back to the central processing unit (5).
As the prioritization scheme of this case, the upper pipeline low temperature motor-driven valve (4), the lower pipeline low temperature motor-driven valve (10),
The main pipe rail low temperature motor-driven valve (12) can be controlled by the central processing unit (5), respectively real-time control upper pipeline, down tube
The flow on road and main pipe rail.
As the prioritization scheme of this case, the central processing unit (5) can receive the infrared radiation thermometer (1), it is described on
Pipeline low-temperature flowmeter (3), the lower pipeline cryogenic flow meter (9), the main pipe rail cryogenic flow meter (11) information feedback,
Control the upper pipeline low temperature motor-driven valve (4), the lower pipeline low temperature motor-driven valve (10) and the main pipe rail low temperature motor-driven valve
(12).
The beneficial effects of the present invention are:
(1) it uses liquid nitrogen as coolant, can effectively take away heat caused by cutting, reduce tool wear, improve workpiece table
Face quality, not can cause environmental pollution;
(2) cutting temperature of infrared radiation thermometer real-time detection rake face and flank is used, so as to make central processing unit real
When regulate and control the liquid nitrogen flow in each pipeline to realize the optimal of cutting effect, the degree of automation is greatly improved;
(3) cryogenic flow meter and low temperature motor-driven valve are used, opposite manually-operated gate both can be with the liquid nitrogen stream in each pipeline of real-time detection
Situation is measured, and the flow demand of variation can timely be regulated and controled, it is more flexible.
Detailed description of the invention
Fig. 1 is overall diagram of the invention.
Fig. 2 is infrared radiation thermometer schematic diagram of the invention.
Fig. 3 is cryogenic flow meter schematic diagram of the invention.
Fig. 4 is low temperature motor-driven valve schematic diagram of the invention.
Fig. 5 is liquid nitrogen container schematic diagram of the invention.
Fig. 6 is control principle drawing of the invention.
Infrared radiation thermometer 1 in figure, upper pipeline turn to nozzle 2, upper pipeline cryogenic flow meter 3, upper pipeline low temperature motor-driven valve 4,
Central processing unit 5, transport pipeline 6, liquid nitrogen container 7, lower pipeline turn to nozzle 8, lower pipeline cryogenic flow meter 9, lower pipeline low temperature electric
Dynamic valve 10, main pipe rail cryogenic flow meter 11, main pipe rail low temperature motor-driven valve 12.
Specific embodiment
The present invention and its effect are further elaborated below in conjunction with accompanying drawings and embodiments.
As shown in Figure 1.The system successively includes infrared radiation thermometer (1), upper pipeline steering nozzle (2), upper pipeline low temperature stream
Meter (3), upper pipeline low temperature motor-driven valve (4), central processing unit (5), transport pipeline (6), liquid nitrogen container (7), lower pipeline turn to spray
Mouth (8), lower pipeline cryogenic flow meter (9), lower pipeline low temperature motor-driven valve (10), main pipe rail cryogenic flow meter (11), main pipe rail are low
Warm motor-driven valve (12).The infrared radiation thermometer (1) is responsible for the temperature of real-time detection rake face and flank and is fed back in described
Central processor (5).The central processing unit (5) passes through the main pipe rail cryogenic flow meter according to the reasonable temperature of setting first
(11) and the combination of the main pipe rail low temperature motor-driven valve (12) adjusts the liquid nitrogen flow in main pipe rail.Secondly by the upper pipeline
The combination of cryogenic flow meter (3) and the upper pipeline low temperature motor-driven valve (4) adjusts the upper steering nozzle (2) and sprays to rake face
Flow.Again by the combination of the lower pipeline cryogenic flow meter (9) and the lower pipeline low temperature motor-driven valve (10) adjust it is described under
The flow that nozzle (8) spray to flank is turned to, liquid nitrogen flow intelligent control is finally realized.
As shown in Fig. 2, being passed the information on after the infrared radiation thermometer (1) can detecte the temperature of rake face and flank
Give the central processing unit (5).
As shown in figure 3, the upper pipeline cryogenic flow meter (3), the lower pipeline cryogenic flow meter (9), the main pipe rail
Cryogenic flow meter (12) can detecte the liquid nitrogen flow in each pipeline, pass information to the central processing unit (5).
As shown in figure 4, the upper pipeline low temperature motor-driven valve (4), the lower pipeline low temperature motor-driven valve (10), the main pipe rail
The signal that low temperature motor-driven valve (12) can receive the central processing unit (5) controls the liquid nitrogen flow in each pipeline.
As shown in figure 5, the liquid nitrogen container (7) can provide liquid nitrogen, there is pressure gauge on the liquid nitrogen container (7), pass through pressure
Power table can check the pressure in the liquid nitrogen container (7).
As shown in fig. 6, being control principle drawing of the present invention.The infrared radiation thermometer (1) detects rake face and flank automatically
Temperature, temperature information is fed back into the central processing unit (5).The main pipe rail cryogenic flow meter (11), the upper pipeline
Cryogenic flow meter (3), the lower pipeline cryogenic flow meter (9) detect the flow in each pipeline, feed back information to the center
Processor (5).The central processing unit (5) passes through the control main pipe rail low temperature motor-driven valve according to the reasonable temperature of setting
(12), the upper pipeline low temperature motor-driven valve (4), the lower pipeline low temperature motor-driven valve (10) control the liquid nitrogen flow in each pipeline,
It is final to realize liquid nitrogen flow intelligent control.
The course of work of the invention is as follows: the infrared radiation thermometer (1) is responsible for the temperature of real-time detection rake face and flank
It spends and feeds back to the central processing unit (5).The central processing unit (5) passes through main pipe rail according to the reasonable temperature of setting first
Liquid nitrogen flow in cryogenic flow meter (11) and the combination adjustment main pipe rail of the main pipe rail low temperature motor-driven valve (12).Secondly by
The combination of the upper pipeline cryogenic flow meter (3) and the upper pipeline low temperature motor-driven valve (4) adjusts the upper pipeline and turns to nozzle
(2) liquid nitrogen flow of rake face is sprayed to.Pass through the lower pipeline cryogenic flow meter (9) and the lower pipeline low temperature motor-driven valve again
(10) combination adjusts the lower pipeline and turns to the liquid nitrogen flow that nozzle (8) spray to flank.Finally realize auto-control liquid
Nitrogen flow solves the cooling not enough environmental protection of traditional cutting fluid, cannot achieve the effective monitoring to liquid nitrogen flow when liquid nitrogen is cooling,
The problem of wasting liquid nitrogen flow.Realize environmental protection, saving and efficient sub-cooled.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, several improvement and replacement can also be made, these are improved and replacement
Also it should be regarded as protection scope of the present invention.
Claims (6)
1. a kind of liquid nitrogen flow intelligent control cooling system suitable for sub-zero machining, which successively includes infrared radiation thermometer
(1), upper pipeline turn to nozzle (2), upper pipeline cryogenic flow meter (3), upper pipeline low temperature motor-driven valve (4), central processing unit (5),
Transport pipeline (6), liquid nitrogen container (7), lower pipeline turn to nozzle (8), lower pipeline cryogenic flow meter (9), lower pipeline low temperature motor-driven valve
(10), main pipe rail cryogenic flow meter (11), main pipe rail low temperature motor-driven valve (12), characterized in that the infrared radiation thermometer (1) is responsible for
The temperature of real-time detection rake face and flank simultaneously feeds back to the central processing unit (5), and central processing unit (5) basis is set
Fixed reasonable temperature passes through the combination of the main pipe rail cryogenic flow meter (11) and the main pipe rail low temperature motor-driven valve (12) first
The liquid nitrogen flow for adjusting main pipe rail, secondly by the upper pipeline cryogenic flow meter (3) and the upper pipeline low temperature motor-driven valve (4)
Combination adjustment upper turn to nozzle (2) spray to the flow of rake face, then pass through the lower pipeline cryogenic flow meter (9) and institute
The combination adjustment lower flow for turning to nozzle (8) and spraying to flank for stating lower pipeline low temperature motor-driven valve (10), finally realizes
Liquid nitrogen flow intelligent control.
2. a kind of liquid nitrogen flow intelligent control cooling system suitable for sub-zero machining according to claim 1, feature
It is that the temperature of rake face and flank, feeds back information to the centre when infrared radiation thermometer (1) can detecte cutting
It manages device (5).
3. a kind of liquid nitrogen flow intelligent control cooling system suitable for sub-zero machining according to claim 1, feature
It is that the upper pipeline turns to nozzle (2) and the lower pipeline turns to nozzle (8), can flexibly turns to, liquid nitrogen spray exists respectively
Rake face and flank.
4. a kind of liquid nitrogen flow intelligent control cooling system suitable for sub-zero machining according to claim 1, feature
It is that the upper pipeline cryogenic flow meter (3), the lower pipeline cryogenic flow meter (9), the main pipe rail cryogenic flow meter (11) can
With the liquid nitrogen flow in real-time detection upper pipeline, lower pipeline and main pipe rail, information Real-time Feedback is given to the central processing unit
(5).
5. a kind of liquid nitrogen flow intelligent control cooling system suitable for sub-zero machining according to claim 1, feature
It is the upper pipeline low temperature motor-driven valve (4), the lower pipeline low temperature motor-driven valve (10), the main pipe rail low temperature motor-driven valve (12),
It can be controlled by the central processing unit (5), respectively the flow of real-time control upper pipeline, lower pipeline and main pipe rail.
6. a kind of liquid nitrogen flow intelligent control cooling system suitable for sub-zero machining according to claim 1, feature
Be, the central processing unit (5) can receive the infrared radiation thermometer (1), the upper pipeline cryogenic flow meter (3), it is described under
Pipeline low-temperature flowmeter (9), the main pipe rail cryogenic flow meter (11) information feedback, control the upper pipeline low temperature motor-driven valve
(4), the lower pipeline low temperature motor-driven valve (10) and the main pipe rail low temperature motor-driven valve (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811181076.3A CN109048485A (en) | 2018-10-11 | 2018-10-11 | A kind of liquid nitrogen flow intelligent control cooling system suitable for sub-zero machining |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811181076.3A CN109048485A (en) | 2018-10-11 | 2018-10-11 | A kind of liquid nitrogen flow intelligent control cooling system suitable for sub-zero machining |
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|---|---|
| CN109048485A true CN109048485A (en) | 2018-12-21 |
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ID=64763753
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110026811A (en) * | 2019-04-19 | 2019-07-19 | 沈阳理工大学 | A kind of liquid nitrogen internal combustion numerical control drilling-milling bed gas regulating system |
| CN110058621A (en) * | 2019-04-17 | 2019-07-26 | 大连理工大学 | A kind of liquid nitrogen spray amount On-Line Control Method for the cooling processing of ultralow temperature |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110058621A (en) * | 2019-04-17 | 2019-07-26 | 大连理工大学 | A kind of liquid nitrogen spray amount On-Line Control Method for the cooling processing of ultralow temperature |
| CN110058621B (en) * | 2019-04-17 | 2020-09-29 | 大连理工大学 | Liquid nitrogen injection amount on-line control method for ultralow temperature cooling processing |
| CN110026811A (en) * | 2019-04-19 | 2019-07-19 | 沈阳理工大学 | A kind of liquid nitrogen internal combustion numerical control drilling-milling bed gas regulating system |
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Application publication date: 20181221 |