CN108406430A - A kind of ultralow temperature medium internal combustion numerically-controlled machine tool - Google Patents
A kind of ultralow temperature medium internal combustion numerically-controlled machine tool Download PDFInfo
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- CN108406430A CN108406430A CN201810144333.XA CN201810144333A CN108406430A CN 108406430 A CN108406430 A CN 108406430A CN 201810144333 A CN201810144333 A CN 201810144333A CN 108406430 A CN108406430 A CN 108406430A
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- ultralow temperature
- temperature medium
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- hard tube
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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
-
- 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
- B23Q11/1015—Arrangements for cooling or lubricating tools or work by supplying a cutting liquid through the spindle
Abstract
A kind of ultralow temperature medium internal combustion numerically-controlled machine tool of the present invention belongs to numerical control machine tool technique field, be related to it is a kind of integrate the storage of ultralow temperature medium, transmission, adjusting function internal combustion numerically-controlled machine tool.The lathe is made of ultralow temperature medium reservoir, ultralow temperature medium conveying regulation device, hollow heat insulation main shaft and four part of safeguard structure.There are two the left side that ultralow temperature medium reservoirs in parallel are mounted on lathe, ultralow temperature medium conveying regulation devices to be connected with ultralow temperature medium reservoir for ultralow temperature medium reservoir；In hollow heat insulation main shaft, the vacuum mandrel inside main shaft is connect by nut with vacuum hose.Lathe ultralow temperature medium storage, conveying, regulating device are high, rationally distributed in lathe degree of being internally integrated.The continuity for realizing the supply of ultralow temperature medium avoids ultralow temperature medium and generates excessive power loss in transmission process, ensure that the ultralow temperature rate-of flow of output is stably and controllable.
Description
Technical field
The invention belongs to numerical control machine tool technique field, it is related to a kind of storage of ultralow temperature medium, transmission, the adjusting function of collecting in one
The internal combustion numerically-controlled machine tool of body.
Background technology
There is high viscous, high-ductility, high-strength processing characteristic as the difficult-to-machine material of representative using titanium alloy, nickel-base alloy, cause
Local cutting temperature is extremely high, and conventional water base/oil base coolant liquid (0 DEG C~20 DEG C) cooling performance is obviously insufficient.Using liquid nitrogen as generation
(- 150 DEG C or less) of the ultralow temperature medium of table is notable as coolant liquid cooling effect, and cutting temperature can be greatly reduced, improve processing
Quality extends cutter life.
The cooling effect that ultralow temperature cools down medium is related with its intervening mode.Compared with external flood irrigation formula cools down, internal combustion
Cooling has more preferably effect since cooling medium is easier to enter Tool in Cutting regional area, in cool down, lubricate etc..It examines
Consider the ultralow temperature medium such as liquid nitrogen easily to vaporize, needs the storage device of individual secure to keep its liquefaction.Ultralow temperature is situated between
Matter is easy to generate heat exchange with ambient enviroment, leads to its phase, flow velocity rapid fluctuation, to stablize conveying, flow-rate adjustment process
Bring very big difficulty.Due to the low temperature attribute of ultralow temperature medium itself, the structure of normal lathe, fit form easily fail, difficult
To maintain long-term normal work.Therefore, under conditions of not influencing lathe reliability service, realize that ultralow temperature medium internal combustion is cold
But function and the integrated difficulty of machine tool structure are very big.
Currently, domestic and foreign scholars process around ultralow temperature medium internal combustion, a variety of dedicated units or functional component are developed.
2001, Shane Y.Hong existed《International Journal of Machine Tools and Manufacture》
The 15th phase of volume 41 publishes an article《Friction and cutting forces in cryogenic machining of
Ti–6Al–4V》In describe a kind of liquid nitrogen internal combustion method for turning, liquid nitrogen is sprayed by the hollow channel of conduit to point of a knife area
Domain realizes liquid nitrogen internal combustion turnery processing.Dalian University of Technology discloses a kind of " liquid nitrogen in patent 201410228633.8
Internal combustion handle device ", liquid nitrogen is from outside by handle of a knife inner cavity in the device, the pore being circulated near hollow knife bar cutting edge
It sprays, realizes the integrated of machine tool and liquid nitrogen internal combustion function.Dalian University of Technology is in patent 201410182721.9
It discloses " liquid nitrogen internal combustion numerical control drilling milling machine main shaft device ", liquid nitrogen is by main shaft inner cavity in the device, and circulation is until hollow knife
Having cutting edge, nearby pore sprays, and realizes the integrated of machine tool main shaft structure and liquid nitrogen internal combustion function.
But the studies above is not directed to the ultralow temperature medium storage of ultralow temperature medium internal combustion numerically-controlled machine tool, conveying, adjusts
With the integrated development of numerically-controlled machine tool complete machine structure.
Invention content
The present invention solves the technical problem of above-mentioned deficiency is overcome, for the storage of ultralow temperature medium, conveying, work(is adjusted
A kind of ultralow temperature medium internal combustion numerically-controlled machine tool can have been invented with the integrated problem of numerically-controlled machine tool complete machine structure.The lathe
Using liquid nitrogen internal combustion hollow heat insulation main shaft, can guarantee main shaft while realizing ultralow temperature medium internal combustion refrigerating function can
By operation；Ultralow temperature medium conveying regulation device is connect by vacuum hose with main shaft, and entire pipeline insulation sealing is realized ultralow
Warm medium stablizes conveying and flow regulating function；Two ultralow temperature medium reservoirs in parallel are filled by vacuum hose and flow control
Connection is set, persistently injects ultralow temperature medium for axis system.The storage of lathe ultralow temperature medium, conveying, regulating device are in lathe
Portion is rationally distributed, and integrated level is high.The continuity of ultralow temperature medium supply is realized, ultralow temperature agent modulates device ensures output
Ultralow temperature rate-of flow is stably and controllable, prevents from causing the danger such as the excessive generation explosion of overpressure because of the gasification of ultralow temperature medium.
The technical solution adopted by the present invention is a kind of ultralow temperature medium internal combustion numerically-controlled machine tool, and X is equipped on bed piece
It is mounted on machine pillar to the spindle box with Y-direction movable working platform, Z-direction movement, characterized in that the numerically-controlled machine tool also has
IV 4 ultralow temperature medium reservoir I, ultralow temperature medium conveying regulation device II, hollow heat insulation main shaft III and safeguard structure portions
Point；
There are two ultralow temperature medium reservoirs in parallel for the ultralow temperature medium reservoir I：First ultralow temperature medium reservoirs
1.1 and the second ultralow temperature medium reservoirs 1.2, they are mounted on the left of lathe；First disengaging of the first ultralow temperature medium reservoirs 1.1
Liquid mouth 1.a is connect by screw thread with the first copper sleeve 1.3, and the first copper sleeve 1.3 passes through the first nut 1.5 and threeway vacuum hard tube
1.7 first port 1.c connections；Second liquid in-out mouth 1.b of the second ultralow temperature medium reservoirs 1.2 passes through screw thread and the second bronze medal
Connector 1.4 connects, and the second copper sleeve 1.4 is connect by the second nut 1.6 with the second port 1.d of threeway vacuum hard tube 1.7；
The ultralow temperature medium conveying regulation device II is connected with ultralow temperature medium reservoir I, the first vacuum hose
2.1 one end are connect by third nut 2.a with the third port 1.e of threeway vacuum hard tube 1.7, and the other end passes through the 4th nut
2.b is connect with the first vacuum hard tube 2.2；Horizontal positioned 2.4 side of ultralow temperature flowmeter is true by first flange 2.3 and first
Empty hard tube 2.2 connects, and the other side is connect by second flange 2.5 with the second vacuum hard tube 2.6；In second vacuum hard tube 2.6
Portion's sealing installation safety valve 2.7；For supporting the first support 2.13 of ultralow temperature flowmeter 2.4 and for positioning support second very
The second support 2.14 of empty hard tube 2.6 is respectively welded on protective cover 4.1；Second vacuum hard tube, 2.6 other end passes through third method
Orchid 2.8 connect with the electric control valve 2.9 placed vertically, and the third holder of positioning supporting role is played to electric control valve 2.9
2.15 are welded on middle rear bulkhead 4.3；Electric control valve 2.9 is connect by the 4th flange 2.10 with third vacuum hard tube 2.11；
The other end of third vacuum hard tube 2.11 passes through middle rear bulkhead 4.3, and the 4th holder by being welded on middle rear bulkhead 4.3
2.16 fixed support；Third vacuum hard tube 2.11 is connect by the 5th nut 2.c with the second vacuum hose 2.12, all connection spiral shells
Line reinforces sealing performance with sealant tape, and does cold and heat insulation processing；
In the hollow heat insulation main shaft III, main shaft 3.1 is mounted in lathe headstock, and spindle motor 3.5 is mounted on electricity
On machine bearing 3.6, motor support base 3.6 is mounted on main spindle box body 3.7；Vacuum mandrel 3.2 inside main shaft 3.1 passes through the 6th
Nut 3.a is connect with the second vacuum hose 2.12；Key 3.4 on vacuum mandrel 3.2 with pivot holder 3.3 by coordinating, limitation
The rotation of vacuum mandrel 3.2；
Safeguard structure IV is made of protective cover 4.1, protective door 4.2, middle rear bulkhead 4.3, middle left clapboard 4.4, protective cover
4.1 are fixedly connected and are constituted by two top plate, back plate and left and right side plates, and middle left clapboard 4.3 is connected with middle rear bulkhead 4.4, installation
The left side of lathe, protective door 4.2 are connect with protective cover 4.1 in protective cover 4.1, and mounted on the front of lathe；
Cold and heat insulation processing is carried out to all junctions of pipeline using polyurethane foam spray, until solidification.
The beneficial effects of the invention are as follows lathe ultralow temperature medium storage, conveying, regulating devices to be closed in lathe interior layout
Reason, integrated level are high.It is the pass that lathe realizes ultralow temperature medium internal combustion refrigerating function as the hollow heat insulation main shaft of core component
Key.Ultralow temperature is provided for hollow heat insulation main shaft by two ultralow temperature medium reservoirs in parallel and cool down medium, realize that ultralow temperature is situated between
The continuity of matter supply, eliminate processing midway influences caused by due to being replaced storage tank by forced-stopping machine；Entire ultralow temperature medium is defeated
Pipeline is sent all using vacuum heat-insulation or cold and heat insulation measure, ultralow temperature medium to be avoided to generate excessive power damage in transmission process
Consumption；Ultralow temperature agent modulates device ensures that the ultralow temperature rate-of flow of output is stably and controllable, and safety valve is more than in pipeline inner pressure
Pressure release is automatically turned on when given threshold, prevents from causing the danger such as the excessive generation explosion of overpressure because of the gasification of ultralow temperature medium.
Description of the drawings
Fig. 1 is the structure schematic diagram of ultralow temperature medium internal combustion numerically-controlled machine tool, and Fig. 2 is the vertical view of Fig. 1, and Fig. 3 is figure
1 left view, Fig. 4 are the structural schematic diagram that ultralow temperature medium conveys regulation device II in Fig. 1.Wherein：I-ultralow temperature medium stores up
Cryopreservation device, II-ultralow temperature medium conveying regulation device, III-hollow heat insulation main shaft, IV-safeguard structure；The first ultralow temperature of 1.1- is situated between
Matter storage tank, 1.2- the second ultralow temperature medium reservoirs, the first copper sleeves of 1.3-, the second copper sleeves of 1.4-, the first nuts of 1.5-, 1.6-
Second nut, 1.7- threeway vacuum hard tubes, the first shut-off valves of 1.8-, the second shut-off valves of 1.9-, the first vacuum hoses of 2.1-, 2.2-
First vacuum hard tube, 2.3- first flanges, 2.4- ultralow temperature flowmeters, 2.5- second flanges, 2.6- the second vacuum hard tubes,
2.7- safety valves, 2.8- third flanges, 2.9- electric control valves, the 4th flanges of 2.10-, 2.11- third vacuum hard tubes, 2.12-
Second vacuum hose, 2.13- first supports, 2.14- second supports, 2.15- third holders, the 4th holders of 2.16-, 3.1- master
Axis, 3.2- vacuum mandrels, 3.3- pivot holders, 3.4- keys, 3.5- spindle motors, 3.6- motor support bases, 3.7- main spindle box bodies,
4.1- protective covers, 4.2- protective doors, rear bulkhead in 4.3-, left clapboard in 4.4-, 1.a- the first liquid in-out mouths, 1.b- second are passed in and out
Liquid mouth, 1.c- first ports, 1.d- second ports, 1.e- third ports, 2.a- third nuts, the 4th nuts of 2.b-, 2.c-
Five nuts, the 6th nuts of 3.a-.
Specific implementation mode
Below in conjunction with the accompanying drawings with the technical solution specific implementation mode that the present invention will be described in detail：
In embodiment, ultralow temperature medium is liquid nitrogen (- 196 DEG C)；First ultralow temperature medium reservoirs 1.1 and the second ultralow temperature
Medium reservoirs 1.2 are to press series from supercharging Dewar tank, operating pressure 1.0MPa, nominal volume 175L in DPL；Ultralow temperature
It is -200 DEG C~850 DEG C that flowmeter 2.4, which uses WRV standard Cone Flowmeters, medium temperature, and range is 10L/h~50L/h；Peace
2.7 given threshold pressure of full valve is 1.1MPa；Electric control valve 2.9 uses 810D top guide type single-seat adjusting valves, pressure drop damage
Lose small, discharge characteristic precision height, linear regulation range 20L/h~120L/h, nominal pressure 1.6MPa；It is used in embodiment
The thermal conductivity of vacuum heat-insulating pipe is 2 × 10-5W/ (mK), the inside and outside wall temperature difference that can be born is up to 270 DEG C；The cold insulation of line connection
By the way of polyurethane spray foam, thermal conductivity is 0.024W/ (m K) for heat-insulated processing.
The storage of ultralow temperature medium internal combustion numerically-controlled machine tool, conveying, regulating device installation process are as follows：Such as attached drawing 1,2,3
It is shown, will be filled with the first ultralow temperature medium reservoirs 1.1 of liquid nitrogen first and the second ultralow temperature medium reservoirs 1.2 be placed on it is predetermined
Position observes on storage tank whether liquid level gauge, pressure gauge registration are normal, then continues to install if normal, liquid is replaced if showing exception
Nitrogen storage tank；Respectively by the first copper sleeve 1.3 for being tied with sealant tape and the second copper sleeve 1.4 be screwed into the first liquid in-out mouth 1.a and
Second liquid in-out mouth 1.b；The first port 1.c of horizontal positioned threeway vacuum hard tube 1.7 is passed through into the first included nut again
1.5 connect with 1.3 other end of the first copper sleeve, then connect second port 1.d with the second bronze medal by the second included nut 1.6
First 1.4 other end connection.
Secondly, first support 2.13 and second support 2.14 are welded on the protective cover 4.1 of lathe, in middle rear bulkhead 4.3
Rear side welds third holder 2.15, and the 4th holder 2.16 is welded in front side, and the position of these holders need to ensure the pipeline to be supported
Be horizontally mounted；As shown in Fig. 2, one 2 meters long 2.1 one end of the first vacuum hose is passed through into included third nut 2.a
It is connect with the third port 1.e of threeway vacuum hard tube 1.7, the other end passes through included the 4th nut 2.b and the first vacuum hard tube
2.2 connection；Ultralow temperature flowmeter 2.4 is placed in first support 2.13, one end passes through first flange 2.3 and the first vacuum
Hard tube 2.2 connects, and the other end is connect by second flange 2.5 with the second vacuum hard tube 2.6 being placed in second support 2.14,
The middle part sealing of wherein the second vacuum hard tube 2.6 is mounted with safety valve 2.7；It is electronic on third holder 2.15 by being placed on vertically
2.9 one end of regulating valve is connect by third flange 2.8 with the second vacuum hard tube 2.6, and the other end passes through the 4th flange 2.10 and
Three vacuum hard tubes 2.11 connect；An appropriately sized hole is bored on middle rear bulkhead 4.3, by the another of third vacuum hard tube 2.11
One end passes through, and is fixed on the 4th holder 2.16, then passes through one 3 meters long 2.12 one end of the second vacuum hose included
The 5th nut 2.c connect with third vacuum hard tube 2.11；The other end passes through included the after the bending of second vacuum hose 2.12
Six nut 3.a are connect with the vacuum mandrel 3.2 inside main shaft 3.1.Except the first vacuum hose 2.1 and second is true in above-mentioned pipeline
Outside empty hose 2.12, keeps horizontal as possible during the installation process, see attached drawing 4.
Finally, pivot holder 3.3 is mounted on by bolt on main spindle box body 3.7, key 3.4 is used in combination to connect vacuum mandrel
3.2 and pivot holder 3.3, the rotation of limitation vacuum mandrel 3.2；All junctions of pipeline are carried out using polyurethane foam spray
Cold and heat insulation processing, after 6 hours polyurethane foam cure, so far complete lathe liquid nitrogen storage, conveying, regulating device with it is hollow
The connection of heat-insulated main shaft III is installed.
When ultralow temperature medium internal combustion work of numerical control machine, the first shut-off valve 1.8, the spray of III end of hollow heat insulation main shaft are opened
Go out low temperature nitrogen, after the precooling of 10min~20min pipelines, liquid nitrogen injection and state occurs in III end of hollow heat insulation main shaft
Gradually stablize.By the big minor adjustment liquid nitrogen flow of opening degree for controlling electric control valve 2.9.Machine Z-axis stroke is 300mm, in
When empty heat-insulated main shaft III moves up and down along Z axis guide rail, 2.12 bending section of the second vacuum hose may be implemented to be servo-actuated, will not be to lathe
Normal work behavior impacts.The buoy position for observing liquid level gauge on the first ultralow temperature medium reservoirs 1.1 is incited somebody to action in the tank liquid nitrogen
When with light, the first shut-off valve 1.8 is closed, the second shut-off valve 1.9 on the second ultralow temperature medium reservoirs 1.2 is then opened, it is real
The sustainable supply of existing liquid nitrogen, detachable first copper sleeve 1.3, removes the first ultralow temperature medium reservoirs 1.1 and fills again at this time
Liquid nitrogen.After hollow heat insulation handle of a knife and inner-cooled cutter are installed, you can realize that liquid nitrogen flows through transfer pipeline, main shaft hollow channel, knife
Handle/cutter interior cavity is finally sprayed from cutting edge micropore, realizes internal combustion cooling of the liquid nitrogen apart from cutting zone less than 1mm
Function.
Liquid nitrogen storage, conveying, regulating device and hollow heat insulation main shaft are effectively internally integrated by the present invention in numerically-controlled machine tool
In one, while not influencing each component reliability service of lathe, it ensure that the sustainable supply of liquid nitrogen, maintain stable liquid phase
Transmission state meets the adjustable demand of flow, realizes numerically-controlled machine tool complete machine liquid nitrogen internal combustion refrigerating function.
Claims (1)
1. a kind of ultralow temperature medium internal combustion numerically-controlled machine tool, be equipped on bed piece X to Y-direction movable working platform, Z-direction moves
Dynamic spindle box is mounted on machine pillar, characterized in that the numerically-controlled machine tool also has ultralow temperature medium reservoir (I), surpasses
Cryogenic media conveys (IV) four regulation device (II), hollow heat insulation main shaft (III) and safeguard structure part；
There are two ultralow temperature medium reservoirs in parallel for the ultralow temperature medium reservoir (I)：First ultralow temperature medium reservoirs
(1.1) and the second ultralow temperature medium reservoirs (1.2), they are mounted on the left of lathe；The of first ultralow temperature medium reservoirs (1.1)
One liquid in-out mouth (1.a) is connect by screw thread with the first copper sleeve (1.3), and the first copper sleeve (1.3) passes through the first nut (1.5)
It is connect with the first port (1.c) of threeway vacuum hard tube (1.7)；Second liquid in-out mouth of the second ultralow temperature medium reservoirs (1.2)
(1.b) is connect by screw thread with the second copper sleeve (1.4), and the second copper sleeve (1.4) passes through the second nut (1.6) and threeway vacuum
The second port (1.d) of hard tube (1.7) connects；
The ultralow temperature medium conveying regulation device (II) is connected with ultralow temperature medium reservoir (I), the first vacuum hose
(2.1) one end is connect by third nut (2.a) with the third port (1.e) of threeway vacuum hard tube (1.7), and the other end passes through
Four nuts (2.b) are connect with the first vacuum hard tube (2.2)；Horizontal positioned ultralow temperature flowmeter (2.4) side passes through the first method
Blue (2.3) are connect with the first vacuum hard tube (2.2), and the other side is connected by second flange (2.5) and the second vacuum hard tube (2.6)
It connects；The middle part sealing installation safety valve (2.7) of second vacuum hard tube (2.6)；For supporting the first of ultralow temperature flowmeter (2.4)
Holder (2.13) supports the second support (2.14) of the second vacuum hard tube (2.6) to be respectively welded at protective cover with for positioning
(4.1) on；Second vacuum hard tube (2.6) other end is connected by third flange (2.8) with the electric control valve (2.9) placed vertically
It connects, the third holder (2.15) that positioning supporting role is played to electric control valve (2.9) is welded on middle rear bulkhead (4.3)；It is electronic
Regulating valve (2.9) is connect by the 4th flange (2.10) with third vacuum hard tube (2.11)；Third vacuum hard tube (2.11) it is another
One end passes through middle rear bulkhead (4.3), and the fixed support of the 4th holder (2.16) by being welded on middle rear bulkhead (4.3)；The
Three vacuum hard tubes (2.11) are connect by the 5th nut (2.c) with the second vacuum hose (2.12), and all connection screw threads are with close
Sealed adhesive tape reinforces sealing performance, and does cold and heat insulation processing；
In the hollow heat insulation main shaft (III), main shaft (3.1) is mounted in lathe headstock, and spindle motor (3.5) is mounted on
On motor support base (3.6), motor support base (3.6) is mounted on main spindle box body (3.7)；The internal vacuum mandrel of main shaft (3.1)
(3.2) it is connect with the second vacuum hose (2.12) by the 6th nut (3.a)；Key (3.4) on vacuum mandrel (3.2) by with
Pivot holder (3.3) coordinates, the rotation of limitation vacuum mandrel (3.2)；
The safeguard structure IV is by protective cover (4.1), protective door (4.2), middle rear bulkhead (4.3), middle left clapboard (4.4) group
At protective cover (4.1) is fixedly connected and is constituted by two top plate, back plate and left and right side plates, middle left clapboard (4.4) and middle rear bulkhead
(4.3) it is connected, is mounted on the left side of protective cover (4.1) interior lathe, protective door (4.2) is connect with protective cover (4.1), and is pacified
Mounted in the front of lathe；
Cold and heat insulation processing is carried out to all junctions of pipeline using polyurethane foam spray, until solidification.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201810144333.XA CN108406430B (en) | 2018-02-12 | 2018-02-12 | A kind of ultralow temperature medium internal combustion numerically-controlled machine tool |
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| CN201810144333.XA CN108406430B (en) | 2018-02-12 | 2018-02-12 | A kind of ultralow temperature medium internal combustion numerically-controlled machine tool |
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| CN108406430B CN108406430B (en) | 2019-09-27 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110561162A (en) * | 2019-09-12 | 2019-12-13 | 大连理工大学 | Ultra-low temperature medium internal spraying type cutter handle adaptive to main shaft |
| CN112247672A (en) * | 2020-06-11 | 2021-01-22 | 大连理工大学 | Precision self-healing method for internal injection type cooling main shaft |
| WO2021035824A1 (en) * | 2019-08-28 | 2021-03-04 | 大连理工大学 | Independent liquid nitrogen supply and regulation device for ultralow-temperature cooling machining |
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| WO2021035824A1 (en) * | 2019-08-28 | 2021-03-04 | 大连理工大学 | Independent liquid nitrogen supply and regulation device for ultralow-temperature cooling machining |
| CN110561162A (en) * | 2019-09-12 | 2019-12-13 | 大连理工大学 | Ultra-low temperature medium internal spraying type cutter handle adaptive to main shaft |
| CN112247672A (en) * | 2020-06-11 | 2021-01-22 | 大连理工大学 | Precision self-healing method for internal injection type cooling main shaft |
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| CN108406430B (en) | 2019-09-27 |
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