CN113484107A - Special cutting device of Overlay test piece - Google Patents
Special cutting device of Overlay test piece Download PDFInfo
- Publication number
- CN113484107A CN113484107A CN202110553009.5A CN202110553009A CN113484107A CN 113484107 A CN113484107 A CN 113484107A CN 202110553009 A CN202110553009 A CN 202110553009A CN 113484107 A CN113484107 A CN 113484107A
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- Prior art keywords
- cutting
- test piece
- transverse
- blade
- clamp
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- 238000005520 cutting process Methods 0.000 title claims abstract description 99
- 238000012360 testing method Methods 0.000 title claims abstract description 70
- 238000005056 compaction Methods 0.000 claims abstract description 10
- 238000005553 drilling Methods 0.000 claims abstract description 5
- 238000006073 displacement reaction Methods 0.000 claims description 12
- 239000002002 slurry Substances 0.000 claims description 2
- 238000004080 punching Methods 0.000 abstract description 2
- 239000010426 asphalt Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000003825 pressing Methods 0.000 description 4
- 238000011160 research Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 201000010099 disease Diseases 0.000 description 2
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013100 final test Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/286—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q involving mechanical work, e.g. chopping, disintegrating, compacting, homogenising
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/286—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q involving mechanical work, e.g. chopping, disintegrating, compacting, homogenising
- G01N2001/2873—Cutting or cleaving
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention discloses a special cutting device for an Overlay test piece, which comprises a supporting base, a fixing mold, a motorized device and a cutting part, wherein a transverse cutting clamp, a longitudinal cutting clamp and the motorized device are fixed on the supporting base, a transverse control motor and a longitudinal control motor can pull and push a pressure rod, and then a blade base and the transverse control motor are controlled to move on a sliding rail of the blade base, so that the position of a blade is adjusted to control the cutting process. The device can accurately cut a rotary compaction Test piece or a punching core drilling Test piece into the geometric dimension required by an Overlay Test, can greatly reduce redundant operation, and is simple, convenient and flexible to control.
Description
Technical Field
The invention relates to the field of road engineering material research, in particular to a special cutting device for an Overlay test piece.
Background
The research on the cracking resistance of the asphalt mixture is not only beneficial to solving the problems of asphalt pavement crack diseases and the like, but also has great significance for prolonging the service life of the asphalt pavement.
Among the numerous asphalt pavement cracking diseases, the reflection cracks are one of the main failure modes, and the research on the reflection cracks by scholars at home and abroad is never stopped. The Overlay Test can accurately simulate the action process of a pavement structure layer when a reflection crack occurs, and is favored by numerous scholars. However, at present, ruler measurement and manual cutting are generally adopted when an Overlay test piece is manufactured, the precision of the geometric dimension of the test piece cannot be guaranteed, material waste is easily caused by redundant operation, and a large amount of time and labor cost are consumed. The Overlay Test has higher required precision to the geometric dimensions of Test piece, and this precision also can influence final Test result deeply simultaneously, and the accurate cutting of high accuracy can not be accomplished to the manual cutting method that adopts at present, and the urgent need not a cutting device that both convenient and fast can satisfy the high accuracy requirement again.
Disclosure of Invention
The invention aims to provide a special cutting device for an Overlay Test piece, which can directly cut a rotary compaction Test piece or a drilling core Test piece into the geometric dimension required by an Overlay Test, greatly reduces redundant operation, is simple, easy, convenient and fast, and is flexible to control.
The invention is realized by the following scheme:
a special cutting device for an Overlay test piece comprises a supporting base, a fixed die, a maneuvering device and a cutting part, and specifically comprises
Comprises a supporting base, a fixed die, a motor-driven device and a cutting component, in particular to
The sliding side plate can freely slide on the side plate slide rail along the longitudinal direction and is used for placing and taking out a test piece in the vertical cutting clamp, and the telescopic bolt can control the longitudinal displacement through the bolt and is used for fixing the sliding side plate on the test piece;
the rotatable upper clamp is arranged to freely rotate in the vertical direction and is used for fixing a test piece in the transverse cutting clamp;
the flange fastener is used for fixing the rotatable upper clamp on the transverse cutting clamp;
the cutting blade is fixed on the blade support, the vertical height of the cutting blade is adjusted by the support, and the blade shield blocks the upper part of the cutting blade to prevent slurry from splashing; the blade bracket is arranged on the transverse movable support;
the transverse movable support transversely slides on the transverse sliding rod to adjust the transverse displacement of the cutting blade; the transverse control motor can pull and push the transverse pressure rod and is used for adjusting the position of the transverse movable support;
the longitudinal control motor pulls and pushes the longitudinal pressure rod, so that the displacement of the blade base and the transverse control motor 15 on the sliding rail of the blade base is controlled, and finally the displacement acts on the blade to control the cutting process.
Furthermore, the height of the side plate of the vertical cutting clamp is 38mm +/-0.5 mm, the side plate is flush with the thickness of the test piece, a rotary compaction test piece or a drill core test piece with the diameter of 150mm +/-0.5 mm can be placed, the width is 76mm +/-0.5 mm, and the radius of the arc on the inner side of the side plate is 75mm +/-0.5 mm and is the same as that of the test piece.
Furthermore, the longitudinal sliding range of the sliding side plate is 0-10 mm, the sliding side plate can slide longitudinally, and the sliding side plate is pressed against the test piece through the telescopic bolt, so that the test piece is fixed.
Furthermore, the transverse cutting clamp can be used for fixing a rotary compaction test piece or a core drilling test piece with the diameter of 150mm +/-0.5 mm, the width of the clamp is 38mm +/-0.5 mm, the height of the base is 38mm +/-0.5 mm, and the circular arc radius of the rotatable upper clamp and the circular arc radius of the rotatable base are both 75mm +/-0.5 mm and are the same as the radius of the test piece.
Furthermore, the sizes of the reserved cutting seams of the vertical cutting and the transverse cutting are both 2.0mm +/-0.2 mm in width and 15mm +/-0.5 mm in depth, and the reserved cutting seams are tightly attached to the edges of two sides of the clamp to serve as positioning points of the cutting blade and facilitate cutting operation.
Furthermore, the width of the transverse movable support is 120mm +/-0.5 mm, the length of the transverse sliding rod is 210mm +/-0.5 mm, the length of the sliding rail of the blade base is 552mm +/-0.5 mm, and the transverse displacement and the longitudinal displacement of the cutting blade can be freely adjusted through the matching of the motors in two mutually perpendicular directions, so that the cutting seam is reserved by accurate alignment.
Compared with the prior art, the invention has the following remarkable advantages: the invention provides a special cutting device for an Overlay Test piece, which can directly cut a rotary compaction Test piece or a punching and core drilling Test piece into the geometric size required by an Overlay Test.
Drawings
FIG. 1 is a schematic view of an integral cutting apparatus according to the present invention.
Fig. 2 is a schematic view of a vertical cutting jig of the present invention.
Figure 3 is a schematic view of a cross-cut clamp of the present invention.
Fig. 4 is a schematic view of the motorized apparatus of the present invention.
In the figure: the cutting device comprises a telescopic bolt 1, a sliding side plate 2, a side plate sliding rail 3, a reserved vertical cutting seam 4, a rotatable upper clamp 5, a flange buckle 6, a transverse cutting clamp 7, a reserved transverse cutting seam 8, a blade base sliding rail 9, a cutting blade 10, a blade protecting cover 11, a blade base 12, a blade support 13, a transverse movable support 14, a transverse control motor 15, a transverse pressing rod 16, a transverse sliding rod 17, a longitudinal control motor 18, a longitudinal pressing rod 19 and a vertical cutting clamp 20.
Detailed Description
The specific method of the present invention will be described in detail below with reference to the accompanying drawings.
As shown in fig. 1, a special cutting device for an Overlay test piece comprises a telescopic bolt 1, a sliding side plate 2, a side plate slide rail 3, a vertical cutting reserved cutting seam 4, a rotatable upper clamp 5, a flange buckle 6, a transverse cutting clamp 7, a transverse cutting reserved cutting seam 8, a blade base slide rail 9, a cutting blade 10, a blade shield 11, a blade base 12, a blade support 13, a transverse movable support 14, a transverse control motor 15, a transverse compression bar 16, a transverse sliding bar 17, a longitudinal control motor 18, a longitudinal compression bar 19 and a vertical cutting clamp 20.
As shown in figure 2, the vertical cutting clamp 20 fixes a test piece through two side plates, the height of each side plate is 38mm +/-0.5 mm, the width of each side plate is 76mm +/-0.5 mm, the radius of an inner arc of each side plate is 75mm +/-0.5 mm, the sliding side plates 2 are pushed against the test piece through the telescopic bolts 1, the displacement range of the sliding side plates 2 on the side plate slide rails 3 is 0-10 mm, the vertical cutting reserved cutting seams 4 are arranged on the two sides of the clamp, the size of each cutting seam is 2.0mm +/-0.2 mm in width, and the depth of each cutting seam is 15mm +/-0.5 mm.
As shown in figure 3, the width of the transverse cutting clamp 7 is 38mm +/-0.5 mm, the height of the base is 38mm +/-0.5 mm, the arc radiuses of the rotary upper clamp and the base are both 75mm +/-0.5 mm, the transverse cutting clamp is fixed through the flange fastener 6, the two sides of the clamp are provided with transverse cutting reserved cutting seams 8, the size of each cutting seam is 2.0mm +/-0.2 mm in width, and the depth is 15mm +/-0.5 mm.
As shown in fig. 4, the transverse movable support 14 can slide transversely on the transverse sliding rod 17 to adjust the transverse displacement of the cutting blade, the transverse control motor 15 can pull and push the transverse pressing rod 16 for adjusting the position of the transverse movable support 14, and the longitudinal control motor 18 can pull and push the longitudinal pressing rod 19, thereby controlling the displacement of the blade base and the transverse control motor 15 on the blade base sliding rail 9.
The working process of the invention is as follows:
firstly, selecting a rotary compaction instrument to form an asphalt mixture rotary compaction test piece, wherein a sleeve with the diameter of 150mm is selected, a cushion block is placed in the sleeve, the thickness of the sleeve is 50mm, a standard calibration mould with the thickness of 150mm +/-0.5 mm is selected for calibration, the forming height is set to be 100mm, and the geometric dimension of the finally formed test piece is 150mm +/-0.5 mm in diameter and 100mm +/-0.5 mm in height.
And secondly, opening the rotatable upper clamp 5, placing the test piece in the middle of the transverse cutting clamp 7, covering the rotatable upper clamp 5, and fixing the flange buckle 6 by using a bolt.
And thirdly, opening the transverse control motor 15, adjusting the position of the transverse movable support 14 on the transverse sliding rod 17, and aligning the cutting blade to transversely cut the reserved cutting seam 8.
And fourthly, opening the longitudinal control motor 18, pushing the longitudinal pressure rod 19, enabling the blade base 12 to slide on the blade base slide rail 9, transversely cutting the test piece, and cutting the upper surface and the lower surface to obtain the rotary compaction test piece with the height of 38mm +/-0.5 mm.
And fifthly, loosening the telescopic bolts 1 to enable the sliding side plates 2 to freely move on the side plate slide rails 3, placing the test piece obtained in the fourth step in the vertical cutting fixture 20, screwing the telescopic bolts 1, and pushing the sliding side plates 2 against the test piece.
And sixthly, opening the transverse control motor 15, adjusting the position of the transverse movable support 14 on the transverse sliding rod 17, and aligning the cutting blade to the vertical cutting reserved cutting seam 4.
And seventhly, opening the longitudinal control motor 18, pushing the longitudinal pressure rod 19, enabling the blade base 12 to slide on the blade base slide rail 9, longitudinally cutting the Test piece, and cutting the left side and the right side to finally obtain a centrally symmetrical Overlay Test special Test piece with the width of 76mm +/-0.5 mm.
At present, in an Overlay Test, the preparation of an experimental Test piece is the most time-consuming one-step operation, the cut Test piece needs to be installed on a Test fixture, the stress of the Test piece is influenced by the size of the Test piece in the final calculation process, the used formula is directed at the standard size, and the standardization of the Test piece size is also quite important. At present mainly take the ruler directly to measure the mark on the test piece in the laboratory, in addition the test piece itself is cylindrical, often leads to the test piece to cut and cuts askewly, needs integrated device to promote cutting efficiency to preset good distance in advance comes control accuracy.
The foregoing is only a preferred embodiment of this patent, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of this patent, and these modifications and substitutions should also be regarded as the protection scope of this patent.
Claims (7)
1. The utility model provides a special cutting device of Overlay test piece which characterized in that: comprises a supporting base, a fixed die, a motor-driven device and a cutting component, in particular to
A sliding side plate (2) which can freely slide on the side plate slide rail (3) along the longitudinal direction and is used for placing and taking out a test piece in the vertical cutting clamp (20),
the telescopic bolt (1) can control longitudinal displacement through the bolt and is used for fixing the sliding side plate (2) on the test piece;
a rotatable upper clamp (5) is arranged to freely rotate in the vertical direction and is used for fixing a test piece in a transverse cutting clamp (7);
the flange fastener (6) is used for fixing the rotatable upper clamp (5) on the transverse cutting clamp (7);
the cutting blade (10) is fixed on the blade bracket (13), the vertical height of the cutting blade is adjusted by the bracket, and the blade shield (11) blocks the upper part of the cutting blade to prevent slurry from splashing; the blade bracket (13) is arranged on the transverse movable support (14);
the transverse movable support (14) transversely slides on the transverse sliding rod (17) to adjust the transverse displacement of the cutting blade; the transverse control motor (15) can pull and push the transverse pressure lever (16) and is used for adjusting the position of the transverse movable support (14);
the longitudinal control motor (18) pulls and pushes the longitudinal pressure rod (19), so that the displacement of the blade base (12) and the transverse control motor (15) on the blade base sliding rail (9) is controlled, and finally the blade is acted on to control the cutting process.
2. The special cutting device for the Overlay test piece according to claim 1, wherein: the height of the side plate of the vertical cutting clamp (20) is 38mm +/-0.5 mm, a rotary compaction test piece or a drill core test piece with the diameter of 150mm +/-0.5 mm can be placed, and the longitudinal sliding range of the sliding side plate (2) is 0-10 mm.
3. The special cutting device for the Overlay test piece according to claim 1, wherein: the transverse cutting clamp (7) can be used for fixing a rotary compaction test piece or a core drilling test piece with the diameter of 150mm +/-0.5 mm, the width of the clamp is 38mm +/-0.5 mm, and the height of the base is 38mm +/-0.5 mm.
4. The special cutting device for the Overlay test piece according to claim 1, wherein: the vertical cutting clamp (20) is provided with a vertical cutting reserved cutting seam (4) with the size as follows: the width is 2.0mm plus or minus 0.2mm, and the depth is 15mm plus or minus 0.5 mm.
5. The special cutting device for the Overlay test piece according to claim 1, wherein: the transverse cutting clamp (7) is provided with a transverse cutting reserved cutting seam (8) with the size as follows: the width is 2.0mm plus or minus 0.2mm, and the depth is 15mm plus or minus 0.5 mm.
6. The special cutting device for the Overlay test piece according to claim 1, wherein: the width of the transverse movable support (14) is 120mm +/-0.5 mm, and the length of the transverse sliding rod (17) is 210mm +/-0.5 mm.
7. The special cutting device for the Overlay test piece according to claim 1, wherein: the length of the blade base sliding rail (9) is 552mm +/-0.5 mm, and the cutting direction can be freely adjusted through the matching of two motors in the mutually perpendicular direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110553009.5A CN113484107B (en) | 2021-05-20 | 2021-05-20 | Special cutting device of Overlay test piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110553009.5A CN113484107B (en) | 2021-05-20 | 2021-05-20 | Special cutting device of Overlay test piece |
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| CN113484107A true CN113484107A (en) | 2021-10-08 |
| CN113484107B CN113484107B (en) | 2023-12-08 |
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| Application Number | Title | Priority Date | Filing Date |
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|---|---|---|---|---|
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| CN211278523U (en) * | 2019-09-27 | 2020-08-18 | 南京汇鑫光电材料有限公司 | Rupture membrane cutting equipment |
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| CN112317837A (en) * | 2020-10-19 | 2021-02-05 | 中国水利水电第五工程局有限公司 | Metal section bar detection test piece processing equipment |
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2021
- 2021-05-20 CN CN202110553009.5A patent/CN113484107B/en active Active
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| CN113484107B (en) | 2023-12-08 |
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