CN101290280A - Tepid environment universal sheet shaping test machine - Google Patents
Tepid environment universal sheet shaping test machine Download PDFInfo
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- CN101290280A CN101290280A CNA2008101144334A CN200810114433A CN101290280A CN 101290280 A CN101290280 A CN 101290280A CN A2008101144334 A CNA2008101144334 A CN A2008101144334A CN 200810114433 A CN200810114433 A CN 200810114433A CN 101290280 A CN101290280 A CN 101290280A
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- heating furnace
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Abstract
The invention provides a device of performing various simulative forming performance tests to a panel under warm and vacuum state, consisting of a mechanical system, a hydraulic station, a heating furnace, a cooling system, a vacuumizing system and a detection control system. A host system adopts a three-beam four-column structure, the heating furnace not only guarantees vacuum inside the furnace during testing, but also heats a mould and a check bar; a force plug and a beading rod adopt moving seal with the bottom of the heating furnace to guarantee that the vacuity inside the furnace chamber is not reduced during actuating; the cooling system can guarantee that temperature of a furnace mantle, the force plug, the beading rod, an electrode and other positions do not rise along with the rising temperature inside the heating furnace; the detection control system is responsible for acquiring every parameter in a test and controlling the test to automatically perform at the same time. The device can complete a cupping test, a drawing test, a drifting test, a conical cup test, an earing test, a rigid die bulge test and so on under the room temperature of 1311 DEG C below zero and the working pressure with the vacuity reaching 10 <-3> Pa.
Description
Technical field:
A kind of Tepid environment universal sheet shaping test machine of the present invention is meant the device of realizing under the thermal environment plate being carried out various simulation forming performance tests: belong to the sheet material forming testing machine.
Background technology:
In recent years, serious day by day along with the energy and environmental problem, the lightweight problem of aerospace vehicle and automobile is also more and more important, alloy in lightweight (as titanium alloy, aluminium lithium alloy, magnesium alloy etc.) and super-high strength steel plate have become the light-weighted core of aerospace vehicle and automobile owing to have very high specific strength and specific stiffness and good usability.And these alloy in lightweight and super-high strength steel plate are difficult to be shaped at normal temperatures, generally all to adopt warm working or thermoforming to process, therefore the research of plate warm forming and application increase day by day, sheet forming performance experimental study under the thermal environment also presses for, sheet forming performance test commonly used mainly comprises one directional tensile test and various simulation forming performance test, the existing both at home and abroad at present device that can realize carrying out under the thermal environment one directional tensile test, but the equipment that carries out various simulation forming performance tests under thermal environment yet there are no report.
Summary of the invention:
The object of the present invention is to provide a kind of Tepid environment universal sheet shaping test machine, can not realize the deficiency of the plate simulation forming performance test under the thermal environment to overcome existing equipment.
A kind of Tepid environment universal sheet shaping test machine of the present invention, it specifically comprises:
(1) mechanical system specifically comprises: but the hydraulic cylinder of main frame, die holder and three cover individual drive, i.e. master cylinder, flanging cylinder and head part cylinder.Wherein, main frame adopts three beam four-column type structures, and master cylinder is fixed in the sill top, can realize reciprocating main piston cylinder with the common composition of main oil cylinder piston; The flanging cylinder is fixed in the below of middle cross beam, can realize reciprocating flanging piston cylinder with the common composition of flanging cylinder piston; The main oil cylinder piston bar also is the head part cylinder simultaneously, and head part cylinder piston is equipped with in its inside, and head part is installed on head part cylinder piston top; Die holder comprises upper bolster and die shoe, and upper bolster is fixed in the heating furnace upper wall, and die shoe is positioned at the heating furnace bottom.
Wherein, described main oil cylinder piston inside is equipped with force transducer, main oil cylinder piston bar and punch from top to bottom successively; Die is installed on the upper bolster below.
Wherein, described flanging cylinder piston is equipped with the spherical supporting plate of flanging, the spherical backing plate of flanging, flanging bar, die shoe and blank holder from top to bottom successively.
Wherein, described flanging cylinder piston is a hollow-core construction, and the main oil cylinder piston bar therefrom passes through, and the two matches by ball bearing guide bushing, to reduce friction.
(2) Hydraulic Station, this Hydraulic Station is connected with main frame by hydraulic tube, for system provides power.
(3) pumped vacuum systems, specifically comprise: oil-sealed rotary pump and diffusion pump, oil-sealed rotary pump is connected with diffusion pump by corrugated tube, and diffusion pump further is connected with heating furnace, and the two all is connected with electrical control cabinet and opens and closes vacuum valve by electrical control button utilization cashier's office in a shop operates control.
Wherein, described oil-sealed rotary pump and diffusion pump constitute the two-stage pumped vacuum systems, and wherein oil-sealed rotary pump gives heating furnace and vacuumizing, and diffusion pump then carries out high vacuum exhaustion.
(4) heating furnace is to make the separate type cage structure by molybdenum (Mo) silk, wherein 2/3rds is fixed in the cavity of heating furnace, and 1/3rd are installed on the fire door, constitute a complete coaxial tubular heating zone when fire door is closed; The heating furnace bottom is provided with four through holes, supplies the flanging bar of main oil cylinder piston bar and flanging cylinder to run through.
Wherein, the heat protection screen of described heating furnace is combined by multi-layered alloy sheet, and wherein, the inside is a molybdenum plate, and the outside is that corrosion resistant plate combines, and high insulating effect is pollution-free to the workspace, and is convenient to clean and installation and maintenance.
Wherein, can further be provided with thermopair in the diverse location place in the described heating furnace,, make it even with the control furnace temperature to gather the temperature of different parts.
Wherein, described heating furnace and main oil cylinder piston bar, flanging bar mating part are provided with O-ring seals.
(5) cooling system comprises cooling tank, the air-cooled circulation system and water-cooling circulating system; Wherein cooling tank is connected with heating furnace, air-cooled circulating line by multiply plastic cool pipeline, water pump by cooling tank the inside add certain pressure make cold water enter heating furnace furnace shell, electrode and air-cooled circulating line tube wall and finally be back to cooling tank, thereby constitute water-cooling circulating system; Cooling tank power gets water and cools off by air-conditioner outdoor unit.Wherein, air-cooled circulating line and heating furnace and centrifugal blower constitute the air-cooled circulation system of sealing.
(6) detect control system, comprise compositions such as industrial computer, LCD, electrical control cabinet, thyristor voltage regulator, pressure-pad-force sensor, force transducer.Wherein, industrial computer is connected with main frame, electrical control cabinet by cable, and the operation of whole test machine is controlled automatically; Thyristor voltage regulator is connected with electrical control cabinet, heating furnace by cable, electrical control cabinet is connected with main frame, thyristor voltage regulator, heating furnace, oil-sealed rotary pump and diffusion pump by various cables, by gathering the temperature of thermopair in the heating furnace, control the size of current of thyristor voltage regulator output then, thus the temperature of control heating furnace.The pressure-pad-force sensor communicates with hydraulic oil in the flanging cylinder by high-voltage tube, measures flanging cylinder interior fluid pressure, and force transducer is installed in the main oil cylinder piston bottom, directly measures the magnitude of load that the punch on piston rod top bears.
A kind of Tepid environment universal sheet shaping test machine of the present invention, its advantage and effect are: can conveniently realize the various forming property tests of metal blank under the thermal environment, for sheet forming processing provides complete test figure; This device can be up to 10 in room temperature-1311 ℃, vacuum tightness
-3Finish AEG-process, drawing experiments, hole expansion test, conical cup test, lug test, mould bulging test just etc. under the Pa working pressure.
Description of drawings:
Fig. 1 is a Tepid environment universal sheet shaping test machine structural drawing of the present invention.
Concrete label is as follows among the figure:
1. cooling tank 2. Hydraulic Stations 3. sills 4. main oil cylinder pistons 5. pressure-pad-force sensors
6 main oil cylinder piston bars (head part cylinder) are head part cylinder piston 8. head parts 9. flanging bars 10, column 7.
11. punch 12. entablatures 13. nuts 14. main frames 15. heating furnaces
16. upper bolster 17. dies 18. heating elements 19. blank holders 20. die shoes
21. spherical supporting plate 23. middle cross beams of spherical backing plate 22. flanging of flanging 24. flanging cylinder pistons 25 ball bearing guide bushings
26. flanging cylinder 27. force transducers 28. master cylinders 29. industrial computers 30 LCD
31 electrical control cabinets, 32 thyristor voltage regulators, 33. oil-sealed rotary pumps, 34 diffusion pumps, 35 centrifugal blowers
36 air-cooled circulating lines
Embodiment:
Below in conjunction with accompanying drawing, technical scheme of the present invention is described further.
As shown in Figure 1, a kind of Tepid environment universal sheet shaping test machine of the present invention, it specifically comprises:
Main frame 14 is formed framework by sill 3, middle cross beam 23, entablature 12, four columns 10 and some nuts 13, master cylinder 28 is installed on above the sill 3, can realize reciprocating main piston cylinder with main oil cylinder piston 4 common compositions, main oil cylinder piston 4 inside are equipped with force transducer 27, main oil cylinder piston bar 6, punch 11 from top to bottom successively; Flanging cylinder 26 is by being installed on below the middle cross beam 23, can realize reciprocating flanging piston cylinder with flanging cylinder piston 24 common compositions, flanging cylinder piston 24 is equipped with the spherical supporting plate 22 of flanging, the spherical backing plate 21 of flanging, flanging bar 9, die shoe 20, blank holder 19 from top to bottom successively, pressure-pad-force sensor 5 is a pressure transducer, communicate by the hydraulic oil of high-voltage tube with the flanging cylinder interior, flanging cylinder piston 24 is a hollow-core construction, main oil cylinder piston bar 6 therefrom passes through, and the two matches to reduce friction by ball bearing guide bushing 26; Head part cylinder 6 also is the main oil cylinder piston bar simultaneously, and head part cylinder piston 7 is equipped with in its inside, and head part 8 is installed on head part cylinder piston 7 tops.
In Fig. 1, cooling tank 1 is connected with heating furnace, air-cooled circulating line 36 by multiply plastic cool pipeline, water pump by cooling tank the inside add certain pressure make cold water enter heating furnace furnace shell, electrode and air-cooled circulating line 36 tube wall and finally cycle back to cooling tank, the water in the cooling tank cools off by air-conditioner outdoor unit.
In Fig. 1, thyristor voltage regulator 32 is connected with electrical control cabinet 31, heating furnace 15 by cable, and electrical control cabinet is controlled the size of current of thyristor voltage regulator output then by gathering the temperature of thermopair in the heating furnace, thus the temperature of control heating furnace.In order to make furnace temperature even, in heating furnace, be provided with the temperature that three thermopairs are gathered different parts respectively, make it even with the control furnace temperature.
In Fig. 1, oil-sealed rotary pump 33 is connected with diffusion pump 34 by corrugated tube, diffusion pump is connected with vacuum drying oven, constitute the two-stage pumped vacuum systems, wherein oil-sealed rotary pump gives body of heater and vacuumizing, diffusion pump then carries out high vacuum exhaustion, and all control is all operated by opening and closing vacuum valve by the button above the electrical control cabinet 31.
In Fig. 1, air-cooled circulating line 36 constitutes closed cycle system with heating furnace 15, centrifugal blower 35, when after experiment finishes, needing heating furnace cooled off, open gas filling valve inert gas is full of this circulation system, gas filling valve is closed automatically when reaching set pressure, starts centrifugal blower 35 and begins the air-cooled circulation system is carried out the gas forced circulation, and cooled gas is blown in the stove, hot blast is blown into after cools down in the stove again, and so constantly circulation makes fast cooling in the stove.
In Fig. 1, heating furnace 15 is made the separate type cage structure by molybdenum (Mo) silk.Wherein 2/3rds be fixed in the chamber, 1/3rd are contained on the door, and the two halves well heater was formed a complete coaxial tubular heating zone when fire door was closed, and molybdenum filament will be changed easily.The heat protection screen of heating furnace 15 is combined by 5 layers of heat-resisting alloy sheet, and wherein, the inside is two-layer to be molybdenum plate, and three layers of outsides are for corrosion resistant plate combines, and high insulating effect is pollution-free to the workspace, and is convenient to clean and installation and maintenance.
In Fig. 1, Hydraulic Station 2 is connected with main frame 14 by hydraulic tube, for main frame provides power.
In Fig. 1, industrial computer 29 is connected with main frame 14, electrical control cabinet 31 by various cables, and the operation of whole experimental machine is controlled automatically.
In Fig. 1, electrical control cabinet 31 is connected with main frame 14, thyristor voltage regulator 32, heating furnace 15, oil-sealed rotary pump 33, diffusion pump 34 by various cables, and the signal that industrial computer is transmitted sends to the testing machine various piece operation of experimental machine is controlled automatically.
During work, at first test specimen is positioned on the blank holder 19, then heating furnace 15 is vacuumized; when reaching predetermined vacuum tightness, begin heating, temperature arrives setting value and after insulation a period of time; blank holder 19 is up, and test specimen is compressed with predetermined pressure, and punch 11 is up then; test specimen is shaped; after the shaping, it is descending that piston rod 6 drives punch 11, and flanging cylinder 26 drive blank holders 19 are descending then; stop heating; close vacuum pump, open gas filling valve, pour blanket gas; open the air-cooled circulation system; heating furnace is comprised that mould and test specimen cool off,, open fire door when temperature in the stove drops to 110 degree when following; take out test specimen, single test finishes.
Because heating furnace 15 should guarantee certain vacuum tightness and temperature; and main oil cylinder piston bar 6 and flanging bar 9 will move when experiment; be that main oil cylinder piston bar 6 and flanging bar 9 run through heating furnace 15 bottoms; for realizing the motive seal of heating furnace 15 under high temperature, high vacuum; the part that heating furnace 15 and main oil cylinder piston bar 6, flanging bar 9 cooperate adopts O-ring seals; main oil cylinder piston bar 6 and flanging bar 9 inside pass to chilled water simultaneously; temperature is unlikely very high when entering in the high temperature furnace with assurance main oil cylinder piston bar 6 and flanging bar 9, and the protection O-ring seals is not damaged by high temperature.
Claims (8)
1, a kind of Tepid environment universal sheet shaping test machine is characterized in that: this testing machine specifically comprises:
(1) mechanical system specifically comprises: but the hydraulic cylinder of main frame, die holder and three cover individual drive, i.e. master cylinder, flanging cylinder and head part cylinder; Wherein, main frame adopts three beam four-column type structures, and master cylinder is fixed in the sill top, can realize reciprocating main piston cylinder with the common composition of main oil cylinder piston; The flanging cylinder is fixed in the below of middle cross beam, can realize reciprocating flanging piston cylinder with the common composition of flanging cylinder piston; The main oil cylinder piston bar also is the head part cylinder simultaneously, and head part cylinder piston is equipped with in its inside, and head part is installed on head part cylinder piston top; Die holder comprises upper bolster and die shoe, and upper bolster is fixed in the heating furnace upper wall, and die shoe is positioned at the heating furnace bottom;
(2) Hydraulic Station, this Hydraulic Station is connected with main frame by hydraulic tube, for system provides power;
(3) pumped vacuum systems, specifically comprise: oil-sealed rotary pump and diffusion pump, oil-sealed rotary pump is connected with diffusion pump by corrugated tube, and diffusion pump further is connected with heating furnace, and the two all is connected with electrical control cabinet and opens and closes vacuum valve by electrical control button utilization cashier's office in a shop operates control;
(4) heating furnace is to make the separate type cage structure by molybdenum filament, wherein 2/3rds is fixed in the cavity of heating furnace, and 1/3rd are installed on the fire door, constitutes a complete coaxial tubular heating zone when fire door is closed; The heating furnace bottom is provided with four through holes, supplies the flanging bar of main oil cylinder piston bar and flanging cylinder to run through;
(5) cooling system comprises cooling tank, the air-cooled circulation system and water-cooling circulating system; Wherein cooling tank is connected with heating furnace, air-cooled circulating line by multiply plastic cool pipeline, water pump by cooling tank the inside add certain pressure make cold water enter heating furnace furnace shell, electrode and air-cooled circulating line tube wall and finally be back to cooling tank, thereby constitute water-cooling circulating system; Cooling tank power gets water and cools off by air-conditioner outdoor unit; Wherein, air-cooled circulating line and heating furnace and centrifugal blower constitute the air-cooled circulation system of sealing;
(6) detect control system, comprise compositions such as industrial computer, LCD, electrical control cabinet, thyristor voltage regulator, pressure-pad-force sensor, force transducer; Wherein, industrial computer is connected with main frame, electrical control cabinet by cable, and the operation of whole test machine is controlled automatically; Thyristor voltage regulator is connected with electrical control cabinet, heating furnace by cable, electrical control cabinet is connected with main frame, thyristor voltage regulator, heating furnace, oil-sealed rotary pump and diffusion pump by various cables, by gathering the temperature of thermopair in the heating furnace, control the size of current of thyristor voltage regulator output then, thus the temperature of control heating furnace; The pressure-pad-force sensor communicates with hydraulic oil in the flanging cylinder by high-voltage tube, measures flanging cylinder interior fluid pressure, and force transducer is installed in the main oil cylinder piston bottom, directly measures the magnitude of load that the punch on piston rod top bears.
2, a kind of Tepid environment universal sheet shaping test machine according to claim 1 is characterized in that: described main oil cylinder piston inside is installing force sensor, main oil cylinder piston bar and punch successively from top to bottom; Die is installed on the upper bolster below.
3, a kind of Tepid environment universal sheet shaping test machine according to claim 1 is characterized in that: described flanging cylinder piston is installed the spherical supporting plate of flanging, the spherical backing plate of flanging, flanging bar, die shoe and blank holder from top to bottom successively.
4, a kind of Tepid environment universal sheet shaping test machine according to claim 1 is characterized in that: described flanging cylinder piston is a hollow-core construction, and the main oil cylinder piston bar therefrom passes through, and the two matches by ball bearing guide bushing, to reduce friction.
5, a kind of Tepid environment universal sheet shaping test machine according to claim 1, it is characterized in that: described oil-sealed rotary pump and diffusion pump constitute the two-stage pumped vacuum systems, wherein oil-sealed rotary pump gives heating furnace and vacuumizing, and diffusion pump then carries out high vacuum exhaustion.
6, a kind of Tepid environment universal sheet shaping test machine according to claim 1 is characterized in that: the heat protection screen of described heating furnace, combine by multi-layered alloy sheet, and wherein, the inside is a molybdenum plate, the outside is that corrosion resistant plate combines.
7, a kind of Tepid environment universal sheet shaping test machine according to claim 1 is characterized in that: can further be provided with thermopair in the diverse location place in the described heating furnace, to gather the temperature of different parts, make it even with the control furnace temperature.
8, a kind of Tepid environment universal sheet shaping test machine according to claim 1 is characterized in that: described heating furnace and main oil cylinder piston bar, flanging bar mating part are provided with O-ring seals.
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| CN2008101144334A CN101290280B (en) | 2008-06-05 | 2008-06-05 | Tepid environment universal sheet shaping test machine |
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| CN2008101144334A CN101290280B (en) | 2008-06-05 | 2008-06-05 | Tepid environment universal sheet shaping test machine |
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| CN101290280A true CN101290280A (en) | 2008-10-22 |
| CN101290280B CN101290280B (en) | 2011-01-12 |
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