CN105424441A - Three-dimensional crack rock material test piece preparation system and application method thereof - Google Patents
Three-dimensional crack rock material test piece preparation system and application method thereof Download PDFInfo
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- CN105424441A CN105424441A CN201510939535.XA CN201510939535A CN105424441A CN 105424441 A CN105424441 A CN 105424441A CN 201510939535 A CN201510939535 A CN 201510939535A CN 105424441 A CN105424441 A CN 105424441A
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- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
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Abstract
The invention discloses a three-dimensional crack rock material test piece preparation system and an application method thereof. The test piece preparation system comprises a control device, a batching device, a printing and forming device and a test device, wherein the control device is used for controlling the batching device to batch a mixed printing material, controlling the printing and forming device to perform three-dimensional printing on test pieces, and controlling the test device to perform loading tests on the test pieces. The application method mainly comprises the following steps: a computer completes three-dimensional digital modeling, model section division, two-dimensional layer sheet information recognition and printing route planning of the test pieces; the computer controls the printing and forming device to perform layer-by-layer printing on the test pieces according to a planed printing route; the computer controls a test loading device to perform loading test on printed three-dimensional crack rock material test pieces. The test piece preparation system and the application method have the advantages that preparation of complex crack rock test piece models which cannot be prepared according to the conventional method can be realized, and the test piece preparation difficulty and the labor intensity of workers are greatly reduced.
Description
Technical field
The present invention relates to a kind of experimental system and application process thereof, especially a kind of three-dimensional fracture rock material test material preparation system and application process thereof.
Background technology
Along with the fast development of economy, the development of the underground workss such as subway, tunnel, mine digging is more and more rapider.But ubiquity the weak structural face such as crack, joint, tomography in rock stratum environment residing for underground works, impact is in various degree caused on rock mass mechanics performance, control to bring great difficulty and uncertainty to the stability of underground works.Grasp the Changing Pattern of crack rock mechanical property, underground engineering stability is controlled to have very important directive significance.
The development destructive process of research rock cranny is the important means grasping crack rock mechanical property Changing Pattern, the Original Cracks of rock mass inside produces very important impact to the strength and stability of rock mass, and lot of domestic and international Instability of Rock Body Collapse Accidents is all because the Original Cracks of rock mass inside expands the finally through result of growth under external force.For this problem, forefathers have carried out the through situation of expansion of rock mass underbead crack in a large amount of experimental work research pressurized situations, but how to process prefabricated crack in test specimen manufacturing process be a more difficult problem.About concentrating on containing crack rock correlativity Quality Research major part on rocks analog material that gypsum, sand-cement slurry etc. and other compounds make according to certain proportioning, processing main employing in traditional crack mixes the methods such as crack gage, built-in metal bar or polymkeric substance sheet.
Often need the crack making different angles and opening width on test specimen in crack rock experiment, rock is hard brittle material, and traditional Manufacturing Techniques bottleneck is:
(1) classic method, is difficult to the precision ensureing crack angle and opening width when standard rock sample makes through crack, and crack precision does not reach requirement and directly will affect test findings, can not accurately reflect the propagation law of rock fracture.
(2) another kind of classic method, the crack using the injection moulding process such as mould built-in metal bar or polymkeric substance sheet to make is only limitted to simple crack, complicated crack cannot be made, complexity is well below real scene rock structure, therefore simulation similarity degree is low, truly can not reflect the propagation law of rock fracture.
(3) shape in the crack of classic method making limits by manufacture craft, cannot carry out Design of digital.
As can be seen here, prior art awaits further improving.
Summary of the invention
The present invention is the weak point avoiding above-mentioned prior art to exist, the rapid shaping technique of advanced person is applied in the middle of fissure rock test material preparation experiment, proposes a kind of three-dimensional fracture rock material test material preparation system based on rapid shaping technique and application process thereof.
The technical solution adopted in the present invention is:
A kind of three-dimensional fracture rock material test material preparation system based on rapid shaping technique, comprise control device, batching set-up, printing shaping device and experimental provision, control device by integrated line respectively with batching set-up, printing shaping device is connected with experimental provision, control device comprises computing machine, computing machine completes the foundation of the three-dimensional digital model of test specimen, the segmentation in model cross section, the identification of two dimension synusia information and the planning of printing path, the dispensing of the composite material needed for computing machine prints according to the three-dimensional digital model control batching set-up set up, printing shaping device comprises printing head, batching set-up is connected with printing head by supply pipe, computing machine controls according to the printing path cooked up the successively printing that printing shaping device carries out three-dimensional fracture rock material test specimen, experimental provision comprises experiment charger, Experiment of Computer Control Technology charger carries out load test to the three-dimensional fracture rock material test specimen printed.
Described batching set-up comprise batching gantry, be arranged on batching gantry on mixer and servo dehvery pump, be loaded with the composite material needed for printing in mixer, the discharging opening of mixer is connected with supply pipe, and mixer is connected with servo dehvery pump.
Described mixer is provided with weight sensor, and weight sensor is connected with computing machine; Described control device also comprises control desk, and computer installation is on control desk.
Described composite material is the mixing paste raw material of manually joining water, fine sand, gypsum and the lime controlled.
Described printing head is arranged on the end of supply pipe, printing shaping device also comprise printing head can be driven along X to the X moved to control gear, the Y-direction control gear that moves along Y-direction and the Z-direction control gear moved along Z-direction, wherein, X is to the length direction for three-dimensional fracture rock material test specimen, Y-direction is the Width of three-dimensional fracture rock material test specimen, and Z-direction is the short transverse of three-dimensional fracture rock material test specimen.
Described X to control gear comprise X to servomotor, the X that is connected to the output shaft of servomotor with X to ball-screw, the X that is connected to ball-screw with X is to slide plate and be arranged on X to ball-screw side and with X to the suitable X direction guiding rail of slide plate, X is parallel to each other to the length direction of ball-screw and the length direction of X direction guiding rail, and X slides to slide plate along X direction guiding rail;
Described Z-direction control gear comprises Z-direction servomotor, the Z-direction ball-screw be connected with the output shaft of Z-direction servomotor, the Z-direction slide plate be connected with Z-direction ball-screw and is parallel to each other with the length direction of Z-direction ball-screw and the Z-direction guide rail suitable with Z-direction slide plate, Z-direction slide plate is along Z-direction slide, and Z-direction servomotor and Z-direction guide rail are all arranged on X on slide plate;
Described Y-direction control gear comprises Y-direction servomotor, the Y-direction ball-screw be connected with the output shaft of Y-direction servomotor, the Y-direction slide plate be connected with Y-direction ball-screw and is arranged on Y-direction ball-screw side and the Y-direction guide rail suitable with Y-direction slide plate, Y-direction slide plate is connected with printing head is fastening, and Y-direction servomotor is all connected with Z-direction slide plate with Y-direction guide rail;
Described printing head successively carries out 3 D stereo printing under the cooperation of X to control gear, Y-direction control gear and Z-direction control gear, realizes the rapid shaping of three-dimensional fracture rock material test specimen.
Described Z-direction guide rail has two, and it is separately positioned on the both sides of Z-direction ball-screw; Described printing shaping device also comprises X to ball-screw bracing frame and Z-direction ball-screw bracing frame, X is provided with the X that passes to ball-screw for X to guide ring on ball-screw bracing frame, the two ends of Z-direction ball-screw bracing frame are connected with the top of two Z-direction guide rails respectively, Z-direction ball-screw bracing frame are provided with the Z-direction guide ring passed for Z-direction ball-screw; Described Y-direction control gear also comprises Y-direction servomotor location-plate, and Y-direction servomotor location-plate and Z-direction slide plate are fastenedly connected, and Y-direction servomotor and Y-direction guide rail are all arranged on Y-direction servomotor location-plate; The top of described Z-direction slide plate is provided with the spacing ring passed for supply pipe.
Described experimental provision also comprises experiment table, and the side, top of experiment table is provided with that test specimen prints supporting mechanism, opposite side is placed with test specimen box for splendid attire test specimen, and the below of experiment table is provided with constant temperature oven, is contained with the test specimen printed in constant temperature oven; Described test specimen prints supporting mechanism and comprises the test specimen that some layers stack successively from bottom to top and enclose cover, and test specimen encloses the below that cover is positioned at printing head, and each test specimen encloses the accommodating cavity overlapping and be provided with for placing each two-dimentional synusia in three-dimensional fracture rock material test specimen print procedure; Each described test specimen encloses cover and includes two U-shaped deckle boards, two U-shaped deckle board docking fit in a rectangle deckle board, the top of each U-shaped deckle board is provided with U-shaped convex stupefied, the place that the bottom of each U-shaped deckle board is relative with U-shaped convex stupefied position all offers U-shaped groove, the two ends of U-shaped deckle board are fixed with location otic placode respectively, belong to a test specimen together and enclose two U-shaped deckle boards of cover by the fastening location of bolt and nut component, adjacent two layers test specimen encloses cover and is connected location by relative U-shaped convex stupefied and U-shaped groove; Described experiment table is provided with test piece base, and it is convex stupefied that the top of test piece base is provided with hollow, and the U-shaped groove that the convex stupefied test specimen with being positioned at the bottom of hollow encloses two U-shaped deckle boards of cover is connected locates.
Described experiment charger comprises positioning plate with the X be arranged on positioning plate to load maintainer, Y-direction load maintainer and Z-direction load maintainer, insert after three-dimensional fracture rock material test specimen has printed in test specimen box, test specimen box is placed on the middle position of positioning plate, the top of test specimen box, left end, right-hand member, front-end and back-end all offer loading hole, wherein, the axis being opened in the loading hole of test specimen box left end is located on the same line with the axis of the loading hole being opened in test specimen box right-hand member, the axis being opened in the loading hole of test specimen box front end is located on the same line with the axis of the loading hole being opened in test specimen box rear end, X comprises X to load cylinder to load maintainer, X is to load cylinder positioning seat, X is to baffle plate and X to resistance arm, X is arranged on X on load cylinder positioning seat to load cylinder, X is positioned at the offside of X to load cylinder positioning seat to baffle plate, X is connected to baffle plate to support bar with X to load cylinder positioning seat by many X, X is connected to resistance arm and X to baffle plate, X can apply X to loading force through the loading hole of test specimen box left end to the three-dimensional fracture rock material test specimen in test specimen box to the hydraulic stem of load cylinder, X contacts with the three-dimensional fracture rock material test specimen in test specimen box to resistance arm through the loading hole of test specimen box right-hand member, Y-direction load maintainer comprises Y-direction load cylinder, Y-direction load cylinder positioning seat, Y-direction baffle plate and Y-direction resistance arm, Y-direction load cylinder is arranged on Y-direction load cylinder positioning seat, Y-direction baffle plate is positioned at the offside of Y-direction load cylinder positioning seat, Y-direction load cylinder positioning seat is connected with Y-direction baffle plate by many Y-direction support bars, Y-direction resistance arm and Y-direction baffle plate are connected, the hydraulic cylinder of Y-direction load cylinder can apply Y-direction loading force through the loading hole of test specimen box front end to the three-dimensional fracture rock material test specimen in test specimen box, Y-direction resistance arm contacts with the three-dimensional fracture rock material test specimen in test specimen box through the loading hole of test specimen box rear end, Z-direction load maintainer comprises Z-direction load cylinder and Z-direction load cylinder positioning seat, Z-direction load cylinder is arranged on Z-direction load cylinder positioning seat, Z-direction load cylinder positioning seat is positioned at the top of test specimen box, Z-direction load cylinder positioning seat is connected with positioning plate by many Z-direction support bars, and the hydraulic stem of Z-direction load cylinder can apply Z-direction loading force through the loading hole on test specimen box top to the three-dimensional fracture rock material test specimen in test specimen box.
The invention also discloses a kind of as above based on the three-dimensional fracture rock material test material preparation systematic difference method of rapid shaping technique, the method comprises the steps:
Step 1, utilizes computing machine to set up the three-dimensional digital model of fissure rock material test specimen;
Step 2, is divided into multiple cross section by modeling software by three-dimensional digital model, then carries out the region recognition representing rock entity and crack in cross section, obtains discrete two-dimentional synusia information;
Step 3, by path planning program, carries out the planning of synusia scanning pattern to the two-dimentional synusia information that gained is discrete, according to the profile information of its scanning, cook up the printing path of shaping respectively;
Step 4, place bottom test specimen in advance and enclose cover, the printing head that computing machine controls adjustment printing shaping device is in corresponding Z-direction height, computing machine controls printing head according to synusia scanning pattern and carries out X, the motion of Y-direction, meanwhile, computing machine is according to the synusia information of synusia zones of different, control printing head along with at X, while Y-direction motion, the composite material of different ratio is laid to respective regions, treat that the synusia of corresponding Z-direction height is laid complete, computing machine continues to control printing head and is increased to next synusia height, carry out the laying of next synusia, until the space that this position test specimen encloses in cover is laid complete, place next test specimen again and enclose cover, by that analogy, carry out next test specimen again and enclose laying in cover, finally obtain rock sample physical model,
Step 5, is positioned in the constant temperature oven under experiment table by printing the test specimen model obtained;
Step 6, experimentally requirement, when reaching time limit stipulated time, taking out test specimen, putting into test specimen box, and be placed on by test specimen box in experiment charger, Experiment of Computer Control Technology charger carries out corresponding loading experiment to the test specimen in test specimen box.
Owing to have employed technique scheme, the beneficial effect acquired by the present invention is:
1, the quick molding method in the present invention is before beginning printing shaping article, need the three-dimensional model first being carried out object by computing machine, then three-dimensional model is divided into multiple cross section, successively object can be formed to make printing equipment, therefore the present invention is utilized to carry out the printing and making in rock sample crack, the precision of crack angle and opening width can be ensured, the propagation law of rock fracture can accurately be reflected.
2, the present invention adopts digitizing to set up containing fissare test specimen, and crack controllability is strong, can make complicated crack.
3, the present invention adopts the process of computerizeing control and printing, and greatly reduces test specimen manufacture difficulty and labor strength.
Accompanying drawing explanation
Fig. 1 is the three-dimensional structure diagram of the three-dimensional fracture rock material test material preparation system based on rapid shaping technique.
Fig. 2 is the side view of Fig. 1.
Fig. 3 is the vertical view of Fig. 1.
Fig. 4 is the three-dimensional structure diagram of printing shaping device.
Fig. 5 is three-dimensional digital model cutting schematic diagram.
Fig. 6 is the three-dimensional structure diagram of experiment table.
Fig. 7 is experiment charger three-dimensional structure diagram.
Fig. 8 is that test specimen encloses cover three-dimensional structure diagram.
Wherein,
1, printing head 2, supply pipe 3, spacing ring 4, Z-direction guide rail supporting frame 5, Y-direction servomotor location-plate 6, positioning shaft sleeve 7, X is to servomotor 8, X is to ball-screw 9, X is to slide plate 10, X direction guiding rail 11, X is to ball-screw bracing frame 12, Y-direction servomotor 13, Y-direction ball-screw 14, Y-direction slide plate 15, Y-direction guide rail 16, Z-direction servomotor 17, Z-direction ball-screw 18, Z-direction slide plate 19, Z-direction guide rail 20, Z-direction guide rail supporting frame 21, test specimen 2101, crack 22, test piece base 23, caging bolt 24, test specimen encloses cover 24a, U-shaped groove 24b, U-shaped convex stupefied 25, bolt and nut component 26, experiment table 27, constant temperature oven 28, mixer 29, batching gantry 30, servo dehvery pump 31, weight sensor 32, positioning plate 33, Y-direction load cylinder 34, Z-direction support bar 35, test specimen box 36, control desk 37, integrated line 38, X is to load cylinder 39, X is to baffle plate 40, X is to support bar 41, X is to resistance arm 42, X is to load cylinder positioning seat 43, Y-direction load cylinder positioning seat 44, Y-direction baffle plate 45, Y-direction support bar 46, Z-direction load cylinder 47, Z-direction load cylinder positioning seat 48, Y-direction resistance arm
Embodiment
Below in conjunction with accompanying drawing and specific embodiment, the present invention is described in further detail, but the present invention is not limited to these embodiments.
As shown in Figures 1 to 8, as shown in Figures 1 to 8, a kind of three-dimensional fracture rock material test material preparation system based on rapid shaping technique, comprise control device, batching set-up, printing shaping device and experimental provision, control device is connected with experimental provision with batching set-up, printing shaping device respectively by integrated line 37, described control device comprises control desk 36, control desk 36 is provided with the foundation that computer calculate machine completes the three-dimensional digital model of test specimen, the segmentation in model cross section, the identification of two dimension synusia information and the planning of printing path, the dispensing of the composite material needed for computing machine prints according to the three-dimensional digital model control batching set-up set up, printing shaping device comprises printing head 1, batching set-up is connected with printing head 1 by supply pipe 2, computing machine controls according to the printing path cooked up the successively printing that printing shaping device carries out three-dimensional fracture rock material test specimen, experimental provision comprises experiment charger, Experiment of Computer Control Technology charger carries out load test to the three-dimensional fracture rock material test specimen printed.
Described batching set-up comprise batching gantry 29, be arranged on batching gantry 29 on mixer 28 and servo dehvery pump 30, the composite material needed for printing is loaded with in mixer 28, the discharging opening of mixer 28 is connected with supply pipe 2, and mixer 28 is connected with servo dehvery pump 30; Described mixer 28 is provided with weight sensor 31, weight sensor 31 is connected with computing machine, computing machine controls the weight of composite material in mixer 28 by controlling weight sensor 31, described composite material is the mixing paste raw material of manually accurately joining water, fine sand, gypsum and the lime controlled.
Described printing head 1 is arranged on the end of supply pipe 2, printing shaping device also comprise printing head 1 can be driven along X to the X moved to control gear, the Y-direction control gear that moves along Y-direction and the Z-direction control gear moved along Z-direction, wherein, X is to the length direction for test specimen 21, Y-direction is the Width of test specimen 21, and Z-direction is the short transverse of test specimen 21:
Described X to control gear comprise X to servomotor 7, the X that is connected to the output shaft of servomotor 7 with X to ball-screw 8, the X that is connected to ball-screw 8 with X is to slide plate 9 and be arranged on X to ball-screw 8 side and with X to the suitable X direction guiding rail 10 of slide plate 9, X is parallel to each other to the length direction of ball-screw 8 and the length direction of X direction guiding rail 10, and X slides to slide plate 9 along X direction guiding rail 10;
Described Z-direction control gear comprises Z-direction servomotor 16, the Z-direction ball-screw 17 be connected with the output shaft of Z-direction servomotor 16, the Z-direction slide plate 18 be connected with Z-direction ball-screw 17 and is parallel to each other with the length direction of Z-direction ball-screw 17 and the Z-direction guide rail 19 suitable with Z-direction slide plate 18, Z-direction slide plate 18 slides along Z-direction guide rail 19, and Z-direction servomotor 16 and Z-direction guide rail 19 are all arranged on X on slide plate 9;
Described Y-direction control gear comprises Y-direction servomotor 12, the Y-direction ball-screw 13 be connected with the output shaft of Y-direction servomotor 12, the Y-direction slide plate 14 be connected with Y-direction ball-screw 13 and is arranged on Y-direction ball-screw 13 side and the Y-direction guide rail 15 suitable with Y-direction slide plate 14, Y-direction slide plate 14 is connected with printing head 1 is fastening, and Y-direction servomotor 12 is all connected with Z-direction slide plate 18 with Y-direction guide rail 15;
Described printing head 1 successively carries out 3 D stereo printing under the cooperation of X to control gear, Y-direction control gear and Z-direction control gear, realizes the rapid shaping of three-dimensional fracture rock material test specimen.
Described Z-direction guide rail 19 has two, and it is separately positioned on the both sides of Z-direction ball-screw 17, and the bottom of two Z-direction guide rails 19 is connected by a Z-direction guide rail supporting frame 4; Described printing shaping device also comprises X to ball-screw bracing frame 11 and Z-direction ball-screw bracing frame 20, X is provided with the X that passes to ball-screw 8 for X to guide ring on ball-screw bracing frame 11, the two ends of Z-direction ball-screw bracing frame 20 are connected with the top of two Z-direction guide rails 19 respectively, Z-direction ball-screw bracing frame 20 are provided with the Z-direction guide ring passed for Z-direction ball-screw 17; Described Y-direction control gear also comprises Y-direction servomotor location-plate 5, and Y-direction servomotor location-plate 5 and Z-direction slide plate 18 are fastenedly connected, and Y-direction servomotor 12 and Y-direction guide rail 15 are all arranged on Y-direction servomotor location-plate 5; The top of described Z-direction slide plate 18 is provided with the spacing ring 3 passed for supply pipe 2; Described X is connected with positioning shaft sleeve 6 respectively to ball-screw 8 and Z-direction ball-screw 17, and the positioning shaft sleeve 6 be connected to ball-screw 8 with X is connected to slide plate 9 with X, and the positioning shaft sleeve 6 and the Z-direction slide plate 18 that are connected with Z-direction ball-screw 17 are connected.
It should be noted that, X is not limited only to above-mentioned version to the structure of control gear, Y-direction control gear and Z-direction control gear, as long as printing head 1 can be driven to move along X, Y, Z-direction, and the mechanical structure form that can realize the cooperation of three-dimensional motion all can meet the demands.
Described experimental provision also comprises experiment table 26, the side, top of experiment table 26 is provided with that test specimen prints supporting mechanism, opposite side is placed with test specimen box 35 for splendid attire test specimen, the below of experiment table 26 is provided with constant temperature oven 27, is contained with the test specimen printed in constant temperature oven 27; Described test specimen prints supporting mechanism and comprises the test specimen that some layers stack successively from bottom to top and enclose cover 24, test specimen encloses the below that cover 24 is positioned at printing head 1, and each test specimen encloses cover 24 and is provided with accommodating cavity for placing each two-dimentional synusia in three-dimensional fracture rock material test specimen print procedure; Each described test specimen encloses cover 24 and includes two U-shaped deckle boards, two U-shaped deckle board docking fit in a rectangle deckle board, the top of each U-shaped deckle board is provided with U-shaped convex stupefied 24b, the place that the bottom of each U-shaped deckle board is relative with U-shaped convex stupefied 24b position all offers U-shaped groove 24a, the two ends of U-shaped deckle board are fixed with location otic placode respectively, belong to a test specimen together and enclose two U-shaped deckle boards of cover 24 by the fastening location of bolt and nut component 25, adjacent two layers test specimen encloses cover 24 and is connected location by relative U-shaped convex stupefied 4b with U-shaped groove 24a; Described experiment table 26 is provided with test piece base 22, test piece base 22 is connected by caging bolt 23 and experiment table 26, it is convex stupefied that the top of test piece base 22 is provided with hollow, and the U-shaped groove 24a that the convex stupefied test specimen with being positioned at the bottom of hollow encloses two U-shaped deckle boards of cover 24 is connected and locates.
Described experiment charger comprises positioning plate 32 with the X be arranged on positioning plate 32 to load maintainer, Y-direction load maintainer and Z-direction load maintainer, insert in test specimen box 35 after test specimen 21 has printed, test specimen box 35 is placed on the middle position of positioning plate 32, the top of test specimen box 35, left end, right-hand member, front-end and back-end all offer loading hole, wherein, the axis being opened in the loading hole of test specimen box 35 left end is located on the same line with the axis of the loading hole being opened in test specimen box 35 right-hand member, the axis being opened in the loading hole of test specimen box 35 front end is located on the same line with the axis of the loading hole being opened in test specimen box 35 rear end, X comprises X to load cylinder 38 to load maintainer, X is to load cylinder positioning seat 42, X is to baffle plate 39 and X to resistance arm 41, X is arranged on X on load cylinder positioning seat 42 to load cylinder 38, X is positioned at the offside of X to load cylinder positioning seat 42 to baffle plate 39, X is connected to baffle plate 39 to support bar 40 with X to load cylinder positioning seat 42 by many X, X is connected to baffle plate 39 to resistance arm 41 with X, X can apply X to loading force through the loading hole of test specimen box 35 left end to the three-dimensional fracture rock material test specimen in test specimen box 35 to the hydraulic stem of load cylinder 38, X contacts with the three-dimensional fracture rock material test specimen in test specimen box 35 to resistance arm 41 through the loading hole of test specimen box 35 right-hand member, Y-direction load maintainer comprises Y-direction load cylinder 33, Y-direction load cylinder positioning seat 43, Y-direction baffle plate 44 and Y-direction resistance arm 48, Y-direction load cylinder 33 is arranged on Y-direction load cylinder positioning seat 43, Y-direction baffle plate 44 is positioned at the offside of Y-direction load cylinder positioning seat 43, Y-direction load cylinder positioning seat 43 is connected with Y-direction baffle plate 44 by many Y-direction support bars 45, Y-direction resistance arm 48 and Y-direction baffle plate 44 are connected, the hydraulic cylinder of Y-direction load cylinder 33 can apply Y-direction loading force through the loading hole of test specimen box 35 front end to the three-dimensional fracture rock material test specimen in test specimen box 35, Y-direction resistance arm 48 contacts with the three-dimensional fracture rock material test specimen in test specimen box 35 through the loading hole of test specimen box 35 rear end, Z-direction load maintainer comprises Z-direction load cylinder 46 and Z-direction load cylinder positioning seat 47, Z-direction load cylinder 46 is arranged on Z-direction load cylinder positioning seat 47, Z-direction load cylinder positioning seat 47 is positioned at the top of test specimen box 35, Z-direction load cylinder positioning seat 47 is connected with positioning plate 32 by many Z-direction support bars 34, and the hydraulic stem of Z-direction load cylinder 46 can apply Z-direction loading force through the loading hole on test specimen box 35 top to the three-dimensional fracture rock material test specimen in test specimen box 35.
As shown in Figures 1 to 8, the invention also discloses a kind of as above based on the three-dimensional fracture rock material test material preparation systematic difference method of rapid shaping technique, the method comprises the steps:
Step 1, utilizes computing machine to set up the three-dimensional digital model of fissure rock material test specimen;
Step 2, is divided into multiple cross section by modeling software by three-dimensional digital model, then carries out the region recognition representing rock entity and crack 2101 in cross section, obtains discrete two-dimentional synusia information;
Step 3, by path planning program, carries out the planning of synusia scanning pattern to the two-dimentional synusia information that gained is discrete, according to the profile information of its scanning, cook up the printing path of shaping respectively;
Step 4, place bottom test specimen in advance and enclose cover 24, the printing head 1 that computing machine controls adjustment printing shaping device is in corresponding Z-direction height, computing machine controls printing head 1 according to synusia scanning pattern and carries out X, the motion of Y-direction, meanwhile, computing machine is according to the synusia information of synusia zones of different, control printing head 1 along with at X, while Y-direction motion, the composite material of different ratio is laid to respective regions, treat that the synusia of corresponding Z-direction height is laid complete, computing machine continues to control printing head 1 and is increased to next synusia height, carry out the laying of next synusia, until the space that this position test specimen encloses in cover 24 is laid complete, place next test specimen again and enclose cover 24, by that analogy, carry out next test specimen again and enclose laying in cover 24, finally obtain rock sample physical model,
Step 5, is positioned in the constant temperature oven 27 under experiment table 26 by printing the test specimen model obtained;
Step 6, experimentally requirement, when reaching time limit stipulated time, test specimen 21 is taken out, put into test specimen box 35, be placed on by test specimen box 35 in experiment charger, Experiment of Computer Control Technology charger carries out corresponding loading experiment to the test specimen 21 in test specimen box 35.
The part do not addressed in the present invention adopts or uses for reference prior art and can realize.
In describing the invention, it will be appreciated that, term " " center ", " longitudinal direction ", " transverse direction ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", orientation or the position relationship of the instruction such as " outward " are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore limitation of the present invention can not be interpreted as.
Specific embodiment described herein is only to spiritual example explanation of the present invention.Those skilled in the art can make various amendment or supplement or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present invention or surmount the scope that appended claims defines.
Claims (10)
1. the three-dimensional fracture rock material test material preparation system based on rapid shaping technique, it is characterized in that, comprise control device, batching set-up, printing shaping device and experimental provision, control device by integrated line respectively with batching set-up, printing shaping device is connected with experimental provision, control device comprises computing machine, computing machine completes the foundation of the three-dimensional digital model of test specimen, the segmentation in model cross section, the identification of two dimension synusia information and the planning of printing path, the dispensing of the composite material needed for computing machine prints according to the three-dimensional digital model control batching set-up set up, printing shaping device comprises printing head, batching set-up is connected with printing head by supply pipe, computing machine controls according to the printing path cooked up the successively printing that printing shaping device carries out three-dimensional fracture rock material test specimen, experimental provision comprises experiment charger, Experiment of Computer Control Technology charger carries out load test to the three-dimensional fracture rock material test specimen printed.
2. a kind of three-dimensional fracture rock material test material preparation system based on rapid shaping technique according to claim 1, it is characterized in that, described batching set-up comprise batching gantry, be arranged on batching gantry on mixer and servo dehvery pump, the composite material needed for printing is loaded with in mixer, the discharging opening of mixer is connected with supply pipe, and mixer is connected with servo dehvery pump.
3. a kind of three-dimensional fracture rock material test material preparation system based on rapid shaping technique according to claim 2, it is characterized in that, described mixer is provided with weight sensor, and weight sensor is connected with computing machine; Described control device also comprises control desk, and computer installation is on control desk.
4. a kind of three-dimensional fracture rock material test material preparation system based on rapid shaping technique according to claim 1, it is characterized in that, described composite material is the mixing paste raw material of manually joining water, fine sand, gypsum and the lime controlled.
5. a kind of three-dimensional fracture rock material test material preparation system based on rapid shaping technique according to claim 1, it is characterized in that, described printing head is arranged on the end of supply pipe, printing shaping device also comprise printing head can be driven along X to the X moved to control gear, the Y-direction control gear that moves along Y-direction and the Z-direction control gear moved along Z-direction, wherein, X is to the length direction for three-dimensional fracture rock material test specimen, Y-direction is the Width of three-dimensional fracture rock material test specimen, and Z-direction is the short transverse of three-dimensional fracture rock material test specimen.
6. a kind of three-dimensional fracture rock material test material preparation system based on rapid shaping technique according to claim 5, it is characterized in that, described X to control gear comprise X to servomotor, the X that is connected to the output shaft of servomotor with X to ball-screw, the X that is connected to ball-screw with X is to slide plate and be arranged on X to ball-screw side and with X to the suitable X direction guiding rail of slide plate, X is parallel to each other to the length direction of ball-screw and the length direction of X direction guiding rail, and X slides to slide plate along X direction guiding rail;
Described Z-direction control gear comprises Z-direction servomotor, the Z-direction ball-screw be connected with the output shaft of Z-direction servomotor, the Z-direction slide plate be connected with Z-direction ball-screw and is parallel to each other with the length direction of Z-direction ball-screw and the Z-direction guide rail suitable with Z-direction slide plate, Z-direction slide plate is along Z-direction slide, and Z-direction servomotor and Z-direction guide rail are all arranged on X on slide plate;
Described Y-direction control gear comprises Y-direction servomotor, the Y-direction ball-screw be connected with the output shaft of Y-direction servomotor, the Y-direction slide plate be connected with Y-direction ball-screw and is arranged on Y-direction ball-screw side and the Y-direction guide rail suitable with Y-direction slide plate, Y-direction slide plate is connected with printing head is fastening, and Y-direction servomotor is all connected with Z-direction slide plate with Y-direction guide rail;
Described printing head successively carries out 3 D stereo printing under the cooperation of X to control gear, Y-direction control gear and Z-direction control gear, realizes the rapid shaping of three-dimensional fracture rock material test specimen.
7. a kind of three-dimensional fracture rock material test material preparation system based on rapid shaping technique according to claim 6, it is characterized in that, described Z-direction guide rail has two, and it is separately positioned on the both sides of Z-direction ball-screw; Described printing shaping device also comprises X to ball-screw bracing frame and Z-direction ball-screw bracing frame, X is provided with the X that passes to ball-screw for X to guide ring on ball-screw bracing frame, the two ends of Z-direction ball-screw bracing frame are connected with the top of two Z-direction guide rails respectively, Z-direction ball-screw bracing frame are provided with the Z-direction guide ring passed for Z-direction ball-screw; Described Y-direction control gear also comprises Y-direction servomotor location-plate, and Y-direction servomotor location-plate and Z-direction slide plate are fastenedly connected, and Y-direction servomotor and Y-direction guide rail are all arranged on Y-direction servomotor location-plate; The top of described Z-direction slide plate is provided with the spacing ring passed for supply pipe.
8. a kind of three-dimensional fracture rock material test material preparation system based on rapid shaping technique according to claim 5, it is characterized in that, described experimental provision also comprises experiment table, the side, top of experiment table is provided with that test specimen prints supporting mechanism, opposite side is placed with test specimen box for splendid attire test specimen, the below of experiment table is provided with constant temperature oven, is contained with the test specimen printed in constant temperature oven; Described test specimen prints supporting mechanism and comprises the test specimen that some layers stack successively from bottom to top and enclose cover, and test specimen encloses the below that cover is positioned at printing head, and each test specimen encloses the accommodating cavity overlapping and be provided with for placing each two-dimentional synusia in three-dimensional fracture rock material test specimen print procedure; Each described test specimen encloses cover and includes two U-shaped deckle boards, two U-shaped deckle board docking fit in a rectangle deckle board, the top of each U-shaped deckle board is provided with U-shaped convex stupefied, the place that the bottom of each U-shaped deckle board is relative with U-shaped convex stupefied position all offers U-shaped groove, the two ends of U-shaped deckle board are fixed with location otic placode respectively, belong to a test specimen together and enclose two U-shaped deckle boards of cover by the fastening location of bolt and nut component, adjacent two layers test specimen encloses cover and is connected location by relative U-shaped convex stupefied and U-shaped groove; Described experiment table is provided with test piece base, and it is convex stupefied that the top of test piece base is provided with hollow, and the U-shaped groove that the convex stupefied test specimen with being positioned at the bottom of hollow encloses two U-shaped deckle boards of cover is connected locates.
9. a kind of three-dimensional fracture rock material test material preparation system based on rapid shaping technique according to claim 5, it is characterized in that, described experiment charger comprises positioning plate with the X be arranged on positioning plate to load maintainer, Y-direction load maintainer and Z-direction load maintainer, insert after three-dimensional fracture rock material test specimen has printed in test specimen box, test specimen box is placed on the middle position of positioning plate, the top of test specimen box, left end, right-hand member, front-end and back-end all offer loading hole, wherein, the axis being opened in the loading hole of test specimen box left end is located on the same line with the axis of the loading hole being opened in test specimen box right-hand member, the axis being opened in the loading hole of test specimen box front end is located on the same line with the axis of the loading hole being opened in test specimen box rear end, X comprises X to load cylinder to load maintainer, X is to load cylinder positioning seat, X is to baffle plate and X to resistance arm, X is arranged on X on load cylinder positioning seat to load cylinder, X is positioned at the offside of X to load cylinder positioning seat to baffle plate, X is connected to baffle plate to support bar with X to load cylinder positioning seat by many X, X is connected to resistance arm and X to baffle plate, X can apply X to loading force through the loading hole of test specimen box left end to the three-dimensional fracture rock material test specimen in test specimen box to the hydraulic stem of load cylinder, X contacts with the three-dimensional fracture rock material test specimen in test specimen box to resistance arm through the loading hole of test specimen box right-hand member, Y-direction load maintainer comprises Y-direction load cylinder, Y-direction load cylinder positioning seat, Y-direction baffle plate and Y-direction resistance arm, Y-direction load cylinder is arranged on Y-direction load cylinder positioning seat, Y-direction baffle plate is positioned at the offside of Y-direction load cylinder positioning seat, Y-direction load cylinder positioning seat is connected with Y-direction baffle plate by many Y-direction support bars, Y-direction resistance arm and Y-direction baffle plate are connected, the hydraulic cylinder of Y-direction load cylinder can apply Y-direction loading force through the loading hole of test specimen box front end to the three-dimensional fracture rock material test specimen in test specimen box, Y-direction resistance arm contacts with the three-dimensional fracture rock material test specimen in test specimen box through the loading hole of test specimen box rear end, Z-direction load maintainer comprises Z-direction load cylinder and Z-direction load cylinder positioning seat, Z-direction load cylinder is arranged on Z-direction load cylinder positioning seat, Z-direction load cylinder positioning seat is positioned at the top of test specimen box, Z-direction load cylinder positioning seat is connected with positioning plate by many Z-direction support bars, and the hydraulic stem of Z-direction load cylinder can apply Z-direction loading force through the loading hole on test specimen box top to the three-dimensional fracture rock material test specimen in test specimen box.
10. the three-dimensional fracture rock material test material preparation systematic difference method based on rapid shaping technique as described in any one of claim 5 to 9 claim, the method comprises the steps:
Step 1, utilizes computing machine to set up the three-dimensional digital model of fissure rock material test specimen;
Step 2, is divided into multiple cross section by modeling software by three-dimensional digital model, then carries out the region recognition representing rock entity and crack in cross section, obtains discrete two-dimentional synusia information;
Step 3, by path planning program, carries out the planning of synusia scanning pattern to the two-dimentional synusia information that gained is discrete, according to the profile information of its scanning, cook up the printing path of shaping respectively;
Step 4, place bottom test specimen in advance and enclose cover, the printing head that computing machine controls adjustment printing shaping device is in corresponding Z-direction height, computing machine controls printing head according to synusia scanning pattern and carries out X, the motion of Y-direction, meanwhile, computing machine is according to the synusia information of synusia zones of different, control printing head along with at X, while Y-direction motion, the composite material of different ratio is laid to respective regions, treat that the synusia of corresponding Z-direction height is laid complete, computing machine continues to control printing head and is increased to next synusia height, carry out the laying of next synusia, until the space that this position test specimen encloses in cover is laid complete, place next test specimen again and enclose cover, by that analogy, carry out next test specimen again and enclose laying in cover, finally obtain rock sample physical model,
Step 5, is positioned in the constant temperature oven under experiment table by printing the test specimen model obtained;
Step 6, experimentally requirement, when reaching time limit stipulated time, taking out test specimen, putting into test specimen box, and be placed on by test specimen box in experiment charger, Experiment of Computer Control Technology charger carries out corresponding loading experiment to the test specimen in test specimen box.
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