CN103707124A - Temperature-controllable cryogenic cooling device - Google Patents
Temperature-controllable cryogenic cooling device Download PDFInfo
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- CN103707124A CN103707124A CN201210376159.4A CN201210376159A CN103707124A CN 103707124 A CN103707124 A CN 103707124A CN 201210376159 A CN201210376159 A CN 201210376159A CN 103707124 A CN103707124 A CN 103707124A
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- temperature
- heat transfer
- liquid nitrogen
- cooling device
- transfer member
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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
- B23Q11/1053—Arrangements for cooling or lubricating tools or work using cutting liquids with special characteristics, e.g. flow rate, quality using the cutting liquid at specially selected temperatures
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Abstract
The invention relates to the field of mechanical manufacturing, in particular to a temperature-controllable cryogenic cooling device which comprises a fixture, a heat transfer component and a liquid nitrogen container. The fixture is used for clamping a machined material, the heat transfer component is connected with the fixture, and the liquid nitrogen container is connected with the heat transfer component; liquid nitrogen in the liquid nitrogen container is vaporized, absorbs heat and cools the heat transfer component, the heat transfer component cools the machined material by means of heat transfer, and the machined material is clamped by the fixture. The temperature-controllable cryogenic cooling device has the advantages that a large quantity of heat can be absorbed by the aid of vaporization of the liquid nitrogen, the machined material clamped by the fixture is cooled by the heat transfer component with an excellent heat conducting property, and the heat generated during milling machining can be taken away; an obvious cooling effect can be realized, the lowest temperature of the temperature-controllable cryogenic cooling device can reach the temperature of the liquid nitrogen, and accordingly certain materials which are difficult to machine under room-temperature conditions can be effectively milled.
Description
Technical field
The present invention relates to mechanical manufacturing field, be specifically related to a kind of temperature low temperature-controlled cooling device.
Background technology
In mechanical processing process, because material category is various, the difficult-to-machine material special to some, the milling method of normal temperature exists certain limitation, not competent its processing request.As: metal niobium has normal temperature ductility, do not need intermediate heat-treatment just can reach large deformation, and when Milling Process, can produce a large amount of heats, make to add the sticky cutter phenomenon of easy appearance in man-hour, be bonded in niobium on cutter bits along with cutter together rotates, serious impact the quality of surface of the work; The chemism of Titanium is large, under high cutting temperature, easily absorb airborne oxygen element and nitrogen element and form hard and crisp crust, plastic deformation in working angles simultaneously also can cause surface sclerosis, chill phenomenon not only can reduce the fatigue strength of part, and can aggravate tool wear, significant deficiency when this is titanium alloy cutting.
At present mostly to use cutting fluid or air-cooled technology to carry out workpiece cooling for milling equipment on the market, the temperature of its cooling medium only at-50 ℃ between normal temperature, actual cooling effect is difficult to meet process requirements.
Summary of the invention
(1) technical problem that will solve
The object of the present invention is to provide a kind of temperature low temperature-controlled cooling device, for difficult to machine material under room temperature condition is reached to better cooling effect.
(2) technical scheme
Technical solution of the present invention is as follows:
A temperature low temperature-controlled cooling device, comprises the fixture for clamping machined material, the heat transfer member being connected with described fixture and the liquid nitrogen container being connected with described heat transfer member; The cooling described heat transfer member of liquid nitrogen vaporization heat absorption in described liquid nitrogen container, described heat transfer member conducts the machined material of cooling described fixture clamping by heat.
Preferably, described liquid nitrogen container is movable along the length direction of described heat transfer member, to regulate the contact area of described heat transfer member and described liquid nitrogen.
Preferably, described heat transfer member comprises the thermal conductive wire being connected with described fixture and is enclosed within described thermal conductive wire outer for keeping the insulating tube of described thermal conductive wire temperature.
Preferably, described thermal conductive wire is copper pigtail, and described insulating tube is Dewar pipe.
Preferably, described temperature low temperature-controlled cooling device also comprises the heating unit being connected with described fixture, for heating described machined material, coordinates the stable temperature of controlling described machined material with described heat transfer member.
Preferably, described temperature low temperature-controlled cooling device also comprises the control module being connected with described liquid nitrogen container, heating unit and machined material respectively, and described control module is for controlling described liquid nitrogen container with respect to the power that heats of the displacement of heat transfer member and heating unit.
Preferably, described control module comprises control module and connected collecting unit, the temperature of machined material monitoring result is sent to described control module described in described collecting unit Real-Time Monitoring, described control module is controlled described liquid nitrogen container with respect to the power that heats of the displacement of heat transfer member and heating unit according to described monitoring result.
Preferably, described temperature low temperature-controlled cooling device also comprises and is arranged at the outer baffle plate for controlled working environment water vapour content of described fixture.
(3) beneficial effect
The present invention utilizes liquid nitrogen vaporization to absorb a large amount of heats, by heat conductivility good heat transfer member, the machined material of fixture clamping is carried out cooling, and the heat producing while taking away Milling Process; Cooling effect is remarkable, and the minimum liquid nitrogen temperature that reaches has well solved the milling problem of difficult to machine material under some room temperature conditions.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of a kind of temperature low temperature-controlled of the present invention cooling device.
In figure, 1: milling machine; 2: machined material; 3: temperature sensor; 4: fixture; 5: heating wire; 6: baffle plate; 7: workbench; 8: Dewar pipe; 9: copper pigtail; 10: liquid nitrogen container; 11: guide rail; 12: motor; 13: liquid nitrogen container platform.
The specific embodiment
Below in conjunction with drawings and Examples, the specific embodiment of invention is described further.
A kind of temperature low temperature-controlled cooling device as shown in Figure 1, comprises fixture 4, the heat transfer member being connected with fixture 4 and the liquid nitrogen container 10 being connected with heat transfer member; Fixture 4 is preferably the material of good heat conductivity, copper fixture for example, and specification can be selected according to the actual demand that clamps, can good heat conductive when being mainly used in clamping machined material 2; Liquid nitrogen in liquid nitrogen container 10 for absorbing a large amount of heat when vaporizing, thereby Cooling Heat Transfer member, heat transfer member conducts the machined material 2 of Cooling fixture 4 clampings by heat, the heat having produced while simultaneously having taken away Milling Process, has well solved under some room temperature conditions difficult to machine material as the milling problem of niobium, titanium etc.
Wherein, liquid nitrogen container 10 can move with respect to heat transfer member, not only changes the distance of material to be processed and liquid nitrogen liquid level, and regulates the contact area of heat transfer member and liquid nitrogen, and distance is less, and contact area is larger, and cooling effect is more remarkable; Contact area is less, and cooling effect is more not remarkable.Liquid nitrogen container in the present embodiment is arranged on liquid nitrogen container platform 13, liquid nitrogen container platform 13 can be under the driving of motor 12 on guide rail 11 relatively heat transfer member move up and down, thereby the contact area of Heat Transfer Control member and liquid nitrogen.
Wherein, heat transfer member comprises the thermal conductive wire being connected with fixture 4 and is enclosed within the insulating tube outside described thermal conductive wire; Thermal conductive wire is the material that heat conductivility is good, and as copper pigtail 9, insulating tube, for isolated air, keeps described thermal conductive wire temperature, and insulating tube is preferably Dewar pipe 8, and Dewar pipe 8 is the silver-plated and evacuated double-layer glass tube of interlayer, has good heat insulation effect.
Further, temperature low temperature-controlled cooling device also comprises the heating unit being connected with fixture 4, and heating unit can be heating wire 5, for the heating to machined material 2, and coordinate the stable temperature of controlling machined material 2 with heat transfer member, heat is provided when chilling temperature is too low.
Further, temperature low temperature-controlled cooling device also comprises the control module being connected with liquid nitrogen container 10, heating unit and machined material 2 respectively, and control module is for controlling liquid nitrogen container 10 with respect to the power that heats of the displacement of heat transfer member and heating unit.
Wherein, control module comprises control module and connected collecting unit.The temperature of collecting unit Real-Time Monitoring machined material 2 also sends to control module by monitoring result, and collecting unit is preferably temperature sensor 3 or thermocouple; Control module is controlled liquid nitrogen container 10 with respect to the power that heats of the displacement of heat transfer member and heating unit according to monitoring result, thereby stablely controls whole chilling temperature.
Further, temperature low temperature-controlled cooling device also comprises the baffle plate 6 being arranged at outside fixture 4, and baffle plate 6, for barrier air, avoids steam to condense into the processing of frost impact to machined material.
In practical operation, fixture 4 is fixed on to milling device as on the workbench 7 of milling machine 1, and clamps machined material 2 by fixture 4; Liquid nitrogen container platform 13 is fixed on workbench 7 belows, and only vertical direction can move, and places liquid nitrogen container 10 on liquid nitrogen container platform 13; 9 one of copper pigtails are put into 10, one of liquid nitrogen containers and are connected with fixture 4, the isolated normal temperature air of the sheathed Dewar pipe 8 in outside of copper pigtail 9 mid portions; By being arranged on the temperature sensor 3 of contiguous machined material 2 on fixture 4, obtain real time temperature data; By actual measurement and predefined two temperature value Input Control Elements, according to the temperature difference between two temperature values, obtain two controlled quentity controlled variables of contact area that heat power and copper pigtail 9 and liquid nitrogen of heating wire 5, displacement by the heating voltage of control module automatic control electric heated filament 5 and liquid nitrogen container 10 with respect to copper pigtail 9, realizes the stable control of final temperature during to materials processing.
The present invention has the following advantages compared to existing technology:
1, can control material temperature to be processed, high temperature can reach 100 degrees Celsius, the minimum liquid helium temperature that reaches;
2, can be integrated in the form of annex on existing conventional milling turning equipment, with low cost;
3, simple in structure, easy to loading and unloading, can change integrated equipment according to process requirements.
Above embodiment is only for illustrating the present invention; and be not limitation of the present invention; the those of ordinary skill in relevant technologies field; without departing from the spirit and scope of the present invention; can also make a variety of changes and modification, therefore all technical schemes that are equal to also belong to protection category of the present invention.
Claims (8)
1. a temperature low temperature-controlled cooling device, is characterized in that: comprise the fixture for clamping machined material, the heat transfer member being connected with described fixture and the liquid nitrogen container being connected with described heat transfer member; The cooling described heat transfer member of liquid nitrogen vaporization heat absorption in described liquid nitrogen container, described heat transfer member conducts the machined material of cooling described fixture clamping by heat.
2. temperature low temperature-controlled cooling device according to claim 1, is characterized in that: described liquid nitrogen container is movable along the length direction of described heat transfer member, to regulate the contact area of described heat transfer member and described liquid nitrogen.
3. temperature low temperature-controlled cooling device according to claim 1, is characterized in that: described heat transfer member comprises the thermal conductive wire being connected with described fixture and be enclosed within described thermal conductive wire outer for keeping the insulating tube of described thermal conductive wire temperature.
4. temperature low temperature-controlled cooling device according to claim 3, is characterized in that: described thermal conductive wire is copper pigtail, and described insulating tube is Dewar pipe.
5. temperature low temperature-controlled cooling device according to claim 2, it is characterized in that: described temperature low temperature-controlled cooling device also comprises the heating unit being connected with described fixture, be used for heating described machined material, coordinate the stable temperature of controlling described machined material with described heat transfer member.
6. temperature low temperature-controlled cooling device according to claim 5, it is characterized in that: described temperature low temperature-controlled cooling device also comprises the control module being connected with described liquid nitrogen container, heating unit and machined material respectively, described control module is for controlling described liquid nitrogen container with respect to the power that heats of the displacement of heat transfer member and heating unit.
7. temperature low temperature-controlled cooling device according to claim 6, it is characterized in that: described control module comprises control module and connected collecting unit, the temperature of machined material monitoring result is sent to described control module described in described collecting unit Real-Time Monitoring, described control module is controlled described liquid nitrogen container with respect to the power that heats of the displacement of heat transfer member and heating unit according to described monitoring result.
8. according to the temperature low temperature-controlled cooling device described in any one in claim 1 to 7, it is characterized in that: described temperature low temperature-controlled cooling device also comprises and is arranged at the outer baffle plate for controlled working environment water vapour content of described fixture.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210376159.4A CN103707124B (en) | 2012-09-29 | 2012-09-29 | Temperature-controllable cold cooling unit |
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| CN201210376159.4A CN103707124B (en) | 2012-09-29 | 2012-09-29 | Temperature-controllable cold cooling unit |
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| CN103707124A true CN103707124A (en) | 2014-04-09 |
| CN103707124B CN103707124B (en) | 2016-03-02 |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104260143A (en) * | 2014-07-18 | 2015-01-07 | 西安交通大学 | Low-temperature drilling device of resin-based fiber reinforced composite material and method thereof |
| CN105215375A (en) * | 2014-07-04 | 2016-01-06 | 中国科学院宁波材料技术与工程研究所 | A kind of high speed pulsating method for turning and realize the device of the method |
| CN105698458A (en) * | 2014-11-26 | 2016-06-22 | 安徽智新生化有限公司 | Deep cooling device |
| CN106054803A (en) * | 2016-06-01 | 2016-10-26 | 大连理工大学 | Appropriate-temperature cutting real-time control method of composite material |
| CN107966361A (en) * | 2017-12-18 | 2018-04-27 | 宋越 | Liquid nitrogen refrigerating type fixture and biological mechanics determining equipment |
| CN108857567A (en) * | 2018-06-21 | 2018-11-23 | 重庆工业职业技术学院 | Heating type metal material low pressure process equipment |
| CN109571131A (en) * | 2018-11-14 | 2019-04-05 | 安徽浦进轨道装备有限公司 | A kind of cooling equipment of track equipment 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 |
| 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 |
| CN113119151A (en) * | 2019-12-30 | 2021-07-16 | 上海原能细胞生物低温设备有限公司 | Plate rack clamping mechanism |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105215375A (en) * | 2014-07-04 | 2016-01-06 | 中国科学院宁波材料技术与工程研究所 | A kind of high speed pulsating method for turning and realize the device of the method |
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| CN105698458A (en) * | 2014-11-26 | 2016-06-22 | 安徽智新生化有限公司 | Deep cooling device |
| CN106054803B (en) * | 2016-06-01 | 2019-02-01 | 大连理工大学 | A kind of thermophilic cutting real-time control method of composite material |
| CN106054803A (en) * | 2016-06-01 | 2016-10-26 | 大连理工大学 | Appropriate-temperature cutting real-time control method of composite material |
| CN107966361A (en) * | 2017-12-18 | 2018-04-27 | 宋越 | Liquid nitrogen refrigerating type fixture and biological mechanics determining equipment |
| CN108857567A (en) * | 2018-06-21 | 2018-11-23 | 重庆工业职业技术学院 | Heating type metal material low pressure process equipment |
| CN109571131A (en) * | 2018-11-14 | 2019-04-05 | 安徽浦进轨道装备有限公司 | A kind of cooling equipment of track equipment processing |
| 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 |
| CN113119151A (en) * | 2019-12-30 | 2021-07-16 | 上海原能细胞生物低温设备有限公司 | Plate rack clamping mechanism |
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| CN103707124B (en) | 2016-03-02 |
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