CN205148641U - Experimental device for prepare brazilian disc chevron shape crack - Google Patents
Experimental device for prepare brazilian disc chevron shape crack Download PDFInfo
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- CN205148641U CN205148641U CN201520937719.8U CN201520937719U CN205148641U CN 205148641 U CN205148641 U CN 205148641U CN 201520937719 U CN201520937719 U CN 201520937719U CN 205148641 U CN205148641 U CN 205148641U
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- base
- herringbone
- brazilian disc
- connecting rod
- experimental provision
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Abstract
The utility model discloses an experimental device for prepare brazilian disc chevron shape crack, including the aircraft nose, fixing device, base and operation panel, aircraft nose are located the one end of workstation, install the motor on the aircraft nose, and the output shaft and the connecting rod of motor are connected, install the cutting piece on the connecting rod, operation panel slidable mounting keeps away from the one end of aircraft nose at the workstation, the side of operation panel is installed the control operation platform and is controlled the action bars of back -and -forth movement from top to bottom, the base is fixed on the operation panel, is provided with a plurality of groups mounting relatively in the upper end of base, be parallel to each other in the radial line orientation between every group mounting and be all parallel with the axis direction of connecting rod, fixing device is last be provided with with the base on the corresponding through -hole I of mounting to fix on the base through through -hole I. The utility model is simple in operation, the practicality is strong, and the cutting is accurate moreover, and application prospect is good.
Description
Technical field
The utility model belongs to technical field of processing equipment, is specifically related to a kind of experimental provision and the method for operating thereof of preparing Brazilian disc herringbone crack.
Background technology
When the fracture characteristics of the quasi-brittle material such as study of rocks, the herringbone crack Brazilian disc that International Rock mechanics association is recommended due to I type can be realized, II type and I, II Mixed Mode Fracture and become one of main test specimen configuration.Whether the machining accuracy in Brazilian disc herringbone crack successfully has a significant impact experiment.But the experimental provision in existing preparation herringbone crack majority can not ensure that two faces of cutting overlap, more can not accurate control critical eigenvalue length.
Utility model content
For above-mentioned deficiency of the prior art, the purpose of this utility model is to provide a kind of easy to use, and prefabricated fracture surface is smooth, and fracture length is controlled, has experimental provision and the method for the preparation herringbone crack Brazilian disc of degree of precision.
For realizing above-mentioned technical purpose, the technical scheme that the utility model adopts is as follows:
Prepare the experimental provision in Brazilian disc herringbone crack, comprise head, fixture, base and operating desk, head is positioned at one end of workbench, and head is provided with motor, and the output shaft of motor is connected with connecting rod, and connecting rod is provided with cutting blade; Operating desk is slidably mounted on workbench one end away from head; The action bars that the side of operating desk is movable up and down about being provided with control operation platform; Base is fixed on operating desk, is relatively set with some groups of fixtures in the upper end of base; Often organize and to be parallel to each other on radial line direction between fixture and all parallel with the axis direction of connecting rod; Fixture is provided with the through hole I corresponding with the fixture on base, and is fixed on base by through hole I.
Described fixture is processed by macromolecule nylon bar material.Macromolecule nylon bar material has certain toughness, and intensity, also lower than rock material, can avoid metal fixture easily to cause the shortcoming of rock rupture at the two contact surface place when clamping rock.
Described fixture comprises the semicircular ring of two identical band platforms, and semicircular ring is provided with the through hole I corresponding with base upper fixing element, and the end of the semicircular ring of band platform is provided with the through hole II for fixing Brazilian disc.Cylinder on through hole I and the base corresponding with through hole I cooperatively interacts, and can ensure that two cut surfaces obtained can overlap, and ensure the good depth of parallelism when cutting Brazilian disc tow sides.
One end of described connecting rod is threaded with the output shaft of motor, and the other end is provided with the boss for fixing cutting blade, and cutting blade is fixedly mounted on boss, and the output shaft of motor, connecting rod and cutting blade are positioned on same axis.
Boss is provided with external screw thread, and cutting blade to be arranged on boss and locked by nut, and the external screw thread of nut and connecting rod matches.Cutting blade can be locked by boss structure, prevents the effect of skidding in cutting process.
Operating desk is provided with electromagnet.
Described base is metal plate, and be fixed on operating desk by electromagnet, between base and electromagnet face contact and need not by securing members such as screw-nuts, the planar horizontal of the Brazilian disc in the fixture that the level of base plane and then guarantee are arranged on base can be ensured on the one hand, guarantee cutting accurately, on the other hand dismounting and easy for installation.
Described fixture of often organizing includes two cylinders, and between cylinder, interval is arranged, and the axis of cylinder parallels with cutting blade.
Operating desk is provided with the water pipe for cleaning cooling lubrication and water fender, and water pipe is used for cleaning operation platform and lubricates cutting blade and lower the temperature reducing wearing and tearing, and water fender can prevent current splash, ensures the clean hygiene of working environment.
The utility model realizes the three-dimensional movement in front and back up and down of operating desk by three action bars, can not only accurately make the center of circle of Brazilian disc corresponding with cutting blade in cutting process, and can also cut crack time accurate control critical eigenvalue length size.Through-hole structure in the fixture cylindrical fit corresponding with on base uses, Brazilian disc can not only be made to fix well, and the center of circle of need not aliging again when overturning cutting another face of Brazilian disc just can ensure that the position of cutting is positioned at the center of circle, and can ensure that two cut surfaces are in same plane.The utility model is simple to operate, practical, and cutting accurately, and application prospect is good.
Accompanying drawing explanation
Fig. 1 is front view of the present utility model.
Fig. 2 is the A-A profile of Fig. 1.
Fig. 3 is the front view of fixture in the utility model.
Fig. 4 is the B-B profile of this Fig. 3.
Fig. 5 is the front view of connecting rod in the utility model.
Fig. 6 is the left view of Fig. 5.
Fig. 7 is the geometric representation that the utility model depth of cut controls slot length.
What in figure, each mark represented is meant to: 1, head; 2, cutting blade; 3, base; 4, cylinder; 5, operating desk; 6, electromagnet; 7, action bars; 8, water fender; 9, water pipe; 10, motor; 11, connecting rod; 12, fixture; 13, through hole I; 14, through hole II.
Detailed description of the invention
Embodiment: a kind of experimental provision preparing Brazilian disc herringbone crack, comprises head 1, fixture 12, base 3 and operating desk 5.Head 1 is positioned at one end of workbench, head 1 is provided with motor 10, the output shaft of motor 10 is connected with the threaded one end of connecting rod 11, the other end of connecting rod 11 is provided with the boss for fixing cutting blade 2, boss is provided with external screw thread, cutting blade 2 to be arranged on boss and locked by nut, and the external screw thread of nut and connecting rod matches.Cutting blade can be locked by boss structure, prevents the effect of skidding in cutting process.The output shaft of motor 10, connecting rod 11 and cutting blade 2 are positioned on same axis.
Operating desk 5 is arranged on workbench one end away from head 1; The side of operating desk 5 is provided with the action bars 7 that control operation platform 5 moves forward and backward up and down.Described action bars 7 be three respectively about control operation platforms, the movement of up and down and back and forth direction, the principle that action bars controls console 5 movement is identical with the action bars operation principle on RSG-200 grinding machine.Operating desk 5 is provided with electromagnet 6.For the base 3 of metal plate is fixed on operating desk 5 by electromagnet 6, between base 3 and electromagnet 6 face contact and need not by securing members such as screw-nuts, the planar horizontal of the Brazilian disc in the fixture that the level of base plane and then guarantee are arranged on base can be ensured on the one hand, guarantee cutting accurately, on the other hand dismounting and easy for installation.
Some groups of fixtures are relatively set with in the upper end of base 3.Often organize and to be parallel to each other on radial line direction between fixture and all parallel with the axis direction of connecting rod.Described fixture of often organizing includes two cylinders 4, and between cylinder, interval is arranged, and the axis of cylinder 4 parallels with cutting blade 2.
Described fixture 12 is processed by macromolecule nylon bar material, comprise the semicircular ring of two identical band platforms, the semicircular ring of band platform is provided with the through hole I 13 corresponding with base 3 upper fixing element, is provided with the through hole II 14 for fixing Brazilian disc in the end of semicircular ring.Through hole I 13 and the cylinder 4 corresponding with through hole I 13 cooperatively interact, and fixture 12 are fixed on the base 3, ensure that two cut surfaces obtained can overlap, and ensure good planar smoothness when cutting Brazilian disc tow sides.Macromolecule nylon bar material has certain toughness, and intensity, also lower than rock material, can avoid metal fixture when clamping rock easily in the shortcoming broken in the two contact surface place.
Operating desk 5 is provided with the water pipe 9 for cleaning cooling lubrication and water fender 8, and water pipe 9 is for cleaning operation platform and lubricate cutting blade 2 and reduction wearing and tearing of lowering the temperature, and water fender 8 can prevent current splash, ensures the clean hygiene of working environment.
In use, feed velocity must be slow, feed place not so can be caused to occur larger breach or damage the blade of cutter.
The utility model can ensure two crack cut surfaces in one plane, and key is the cylinder 4 on the through hole I 13 of fixture and base 3.It is fixing on the base 3 that both support the use the fixture 12 making to be fixed with Brazilian disc, after a face of cutting Brazilian disc, fixture 12 is overturn 180 °, then fixture 12 fixed on the base 3, the position of whole process cutting blade is motionless again.Perpendicular bisector due to cylindrical center's line crosses the center of Brazilian disc, so can not only ensure that home position is constant after upset, and cutting blade is constant relative to the position of Brazilian disc.So the double-edged cut surface of Brazilian disc can overlap.
The method that the utility model guarantor font fracture length has degree of precision realizes by accurately controlling depth of cut, and the action bars that depth of cut is moved up and down by control operation platform controls.The action bars of upper and lower function there are dial plate and scale.The drilling depth amount that action bars one encloses is 2mm, and one has 100 scales, and the drilling depth amount of each lattice is 0.02mm.Dial plate can record the number of turns of action bars.Depth of cut controls the geometric representation of slot length as shown in Figure 7, and for CCNBD, the reduction formula of depth of cut and slot length is as follows:
(1)；
(2)；
In formula: a
1for half of outer crack is long; a
0for half of internal fissure is long; R is the radius of Brazilian disc; B is the thickness of Brazilian disc; R
sfor the radius of cutting blade; D is depth of cut.
And depth of cut d=n+x × 0.02, wherein n is the reading of dial plate, and x is the scale on action bars.
It is by adopting the cutting blade of different-thickness to realize that the utility model controls herringbone fracture width.This device provides thickness to be the cutting blade of 0.3mm, 0.5mm, 0.6mm, 0.8mm, 1.0mm and 1.2mm, and diameter has 80mm respectively, 100mm and 110mm.After cutting, the width clearance gauge in crack is measured.
Claims (9)
1. prepare the experimental provision in Brazilian disc herringbone crack for one kind, it is characterized in that: comprise head (1), fixture (12), base (3) and operating desk (5), head (1) is positioned at one end of workbench, head 1 is provided with motor (10), the output shaft of motor 10 is connected with connecting rod (11), connecting rod (11) is provided with cutting blade (2); Operating desk (5) is slidably mounted on workbench one end away from head (1); The side of operating desk (5) is provided with control operation platform (5) action bars (7) movable up and down; Base (3) is fixed on operating desk (5), is relatively set with some groups of fixtures in the upper end of base (3); Often organize and to be parallel to each other on radial line direction between fixture and all parallel with the axis direction of connecting rod; Fixture (12) is provided with the through hole I (13) corresponding with the fixture on base (3), and is fixed on base (3) by through hole I (13).
2. the experimental provision in preparation Brazilian disc herringbone crack according to claim 1, is characterized in that: described fixture (12) is processed by macromolecule nylon bar material.
3. the experimental provision in preparation Brazilian disc herringbone crack according to claim 2, it is characterized in that: described fixture (12) comprises the semicircular ring of two identical band platforms, semicircular ring is provided with the through hole I (13) corresponding with base (3) upper fixing element, the end of the semicircular ring of band platform is provided with the through hole II (14) for fixing Brazilian disc.
4. the experimental provision in the preparation Brazilian disc herringbone crack according to claim 1 or 3, it is characterized in that: one end of described connecting rod (11) is threaded with the output shaft of motor (10), the other end is provided with the boss for fixing cutting blade (2), cutting blade (2) is fixedly mounted on boss, and the output shaft of motor (10), connecting rod (11) and cutting blade (2) are positioned on same axis.
5. the experimental provision in preparation Brazilian disc herringbone crack according to claim 4, is characterized in that: on boss, be provided with external screw thread, and cutting blade (2) to be arranged on boss and locked by nut, and the external screw thread of nut and connecting rod (11) matches.
6. the experimental provision in preparation Brazilian disc herringbone crack according to claim 1, is characterized in that: on operating desk (5), be provided with electromagnet (6).
7. the experimental provision in the preparation Brazilian disc herringbone crack according to claim 1 or 6, is characterized in that: described base (3) is metal plate, and is fixed on operating desk (5) by electromagnet (6).
8. the experimental provision in preparation Brazilian disc herringbone crack according to claim 7, is characterized in that: described fixture of often organizing includes two cylinders (4), and between cylinder (4), interval is arranged, and the axis of cylinder (4) parallels with cutting blade (2).
9. the experimental provision in the preparation Brazilian disc herringbone crack according to claim 1 or 6, is characterized in that: on operating desk (5), be provided with the water pipe (9) for cleaning cooling lubrication and water fender (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520937719.8U CN205148641U (en) | 2015-11-23 | 2015-11-23 | Experimental device for prepare brazilian disc chevron shape crack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520937719.8U CN205148641U (en) | 2015-11-23 | 2015-11-23 | Experimental device for prepare brazilian disc chevron shape crack |
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| Publication Number | Publication Date |
|---|---|
| CN205148641U true CN205148641U (en) | 2016-04-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520937719.8U Expired - Fee Related CN205148641U (en) | 2015-11-23 | 2015-11-23 | Experimental device for prepare brazilian disc chevron shape crack |
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| CN (1) | CN205148641U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105345937A (en) * | 2015-11-23 | 2016-02-24 | 河南理工大学 | Experiment device for manufacturing Brazilian disc Y-shaped crack and operation method of experiment device |
-
2015
- 2015-11-23 CN CN201520937719.8U patent/CN205148641U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105345937A (en) * | 2015-11-23 | 2016-02-24 | 河南理工大学 | Experiment device for manufacturing Brazilian disc Y-shaped crack and operation method of experiment device |
| CN105345937B (en) * | 2015-11-23 | 2017-06-30 | 河南理工大学 | Prepare the experimental provision and its operating method in Brazilian disc herringbone crack |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160413 Termination date: 20191123 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |