CN105784470A - 180-degree bending test fixture - Google Patents
180-degree bending test fixture Download PDFInfo
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- CN105784470A CN105784470A CN201610215993.3A CN201610215993A CN105784470A CN 105784470 A CN105784470 A CN 105784470A CN 201610215993 A CN201610215993 A CN 201610215993A CN 105784470 A CN105784470 A CN 105784470A
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- bending
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
- G01N3/04—Chucks
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- Life Sciences & Earth Sciences (AREA)
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a 180-degree bending test fixture.The 180-degree bending test fixture comprises a bending workbench, an upper pressing roller for loading a sample, bending supports and reversal blocks.The bending supports comprise a left support and a right support which are symmetrically distributed about the axis of the upper pressing roller left and right, and a bending resistance balancing device is arranged between the left support and the right support.The reversal blocks are used for supporting the sample and rotationally connected to the upper portion of the left support and the upper portion of the right support respectively, the reversal blocks are provided with wedge-shaped sliding blocks, and the upper planes and the lower planes of the wedge-shaped sliding blocks are parallel to the axis of the upper pressing roller.After tests, due to the fact that external tension produced by internal stress after the sample is bent enables the wedge-shaped sliding blocks and the reversal blocks to outwards rotate by a certain angle, the internal stress of the sample is released; slope is machined on the wedge-shaped sliding blocks, after the tests, the thick ends of the wedge-shaped sliding blocks are located on the upper portion, the thin ends of the wedge-shaped sliding blocks are located on the lower portion, force for outwards taking the wedge-shaped sliding blocks and the sample is reduced, the wedge-shaped sliding blocks and the sample are very easy to take out, and time and force are saved during operation.The fixture is provided with a circular scaleplate for displaying angles which are very visual.
Description
Technical field
The present invention relates to a kind of fixture, specifically a kind of test fixture bending 180 degree for sheet material or round specimen being arranged on universal testing machine.
Background technology
Universal testing machine is by one of measurement instrument and equipment of bend test of metal, non-metallic material material samples, is widely used in various Mechanics Laboratory, R&D institution, quality inspection department.Apparatus for Bending at low-temp is used for amount of deflection and the bending strength of test material.Bend test is to measure the test of mechanical characteristic when metal material bears bending load, is one of the basic skills of mechanical property of materials test.180 degree of bending fixtures of existing universal testing machine are simple double; two rollers and roller structures, during test, two rollers are bolted on supporting seat, supporting seat is fixed on the workbench of testing machine, bend specimen is placed on a roller, pressure roller is connected with the moving beam of testing machine, testing machine applies downward pressure by moving beam, makes sample bend.Due to the effect of sample inner tensions after doing 180 degree of bend tests, sample is caused to be difficult to take out.
Summary of the invention
It is an object of the present invention to provide a kind of simple in construction, easy to operate 180 ° of bend test fixtures, be arranged on universal testing machine, test the problem that rear sample is difficult to taking-up solving 180 degree bend test fixtures of tradition.
For achieving the above object, the technical solution used in the present invention is:
A kind of 180 ° of bend test fixtures, including bending table, the Bending support being fixed on bending table, for supporting support arrangement of sample, the upper pressure roller for sample is loaded, it is characterized in that: described Bending support includes left support abutment and right support abutment, left support abutment and right support abutment, along the symmetrical distribution of axis of upper pressure roller, are provided with bending drag bascule between left support abutment and right support abutment；A described support arrangement is the inverse block being rotationally connected with left support abutment and right support abutment top respectively, inverse block is provided with wedge block, the two sides of wedge block are parallel with the axis of upper pressure roller, and the thickness of wedge block is from the line progressive additive laterally in the axle center of upper pressure roller Yu bending table center.
Above-mentioned a kind of 180 ° of bend test fixtures, left support abutment includes:
Base plate, being provided with X to through hole and Z-direction through hole, bottom surface is provided with the positioning boss that the T-shaped locating slot with bending table matches, and leading flank bottom is provided with groove, for indicating left support abutment position on bending table, the center of the extended line of groove and Y-direction through hole coincides；
Left riser and right riser, lower end is fixed on base plate, and top is provided with Y-direction through hole, and upper end is provided with groove that communicate, that may pass through rotating shaft key with Y-direction through hole；
Described right support abutment is symmetrical with left support abutment, structure is identical；
Left support abutment and right support abutment are fixed on bending table by fixing bolt by the T-shaped locating slot of Z-direction through hole and bending table；
Described bending drag bascule is penetrate on left support abutment and right support abutment that X is to the pull bar in through hole, and the two ends of pull bar are respectively connected with nut；
Described inverse block is connected on left support abutment and right support abutment by axis of rotation；Inverse block is between left riser and right riser, and in inverse block, processing has the endoporus and keyway that match with rotating shaft, makes inverse block key be connected to the middle part of rotating shaft, and the two ends of rotating shaft can rotate in Y-direction through hole, and the axis of rotating shaft is parallel with the axis of upper pressure roller；The upper plane of inverse block is provided with locating slot, and wedge block is embedded in locating slot, and the upper plane of wedge block is parallel with the axis of rotating shaft.
Above-mentioned a kind of 180 ° of bend test fixtures, upper pressure roller is rotatably connected on bending roller seat by arm-tie, and bending roller seat is arranged on universal testing machine moving beam.
Above-mentioned a kind of 180 ° of bend test fixtures, the anterior side of bending table is provided with bending scale, and bending scale top edge is concordant with bending table upper surface；
Axle center, the end place of described rotating shaft is provided with pointer, and pointer can rotate with rotating shaft；, Bending support corresponding to pointer is provided with circular scale.
Above-mentioned a kind of 180 ° of bend test fixtures, bending table is arranged on universal test machine worktable, and the lower plane center of bending table is provided with hole, location, and steady pin is installed in hole in location, and bending table is positioned at universal testing machine table core position；Sidepiece in hole, location is provided with pin-and-hole, installs alignment pin, it is prevented that bending table rotates in pin-and-hole；
The upper plane of described bending table is provided with T-shaped locating slot in X-direction.
Beneficial effects of the present invention:
After off-test, the outer tension force that the internal stress after bending due to sample produces, make wedge block and inverse block outwards turn over certain angle, so that the internal stresses release of sample；Wedge block is processed gradient, after off-test, the thicker one end of wedge block upper, relatively thin one end under, be very easy to just can be taken off so reducing toward the power used by treatment with external measures wedge block and sample, wedge block and sample, it is time saving and energy saving to operate.And fixture is provided with circular scale angles of display, very intuitively.Adopting duplex pull rod to balance the outside thrust to Bending support that sample produces in BENDING PROCESS, result of the test is accurately and reliably.This clamp structure is simple, easy to operate.
Accompanying drawing explanation
Fig. 1 is the structural representation before the present invention starts test.
Fig. 2 is the structural representation after off-test of the present invention.
Fig. 3 is the schematic front view of left support abutment in the present invention.
Fig. 4 is the schematic top plan view of left support abutment in the present invention.
Fig. 5 is the left view schematic diagram of left support abutment in the present invention.
In figure: 1-alignment pin, 2-steady pin, 3-bending table, 4-bends scale, 5-pull bar, 6-nut,
7-Bending support, 71-base plate, the left riser of 72-, the right riser of 73-, 74-X to through hole, 75-Y to through hole, 76-positioning boss, 77-Z to through hole, 78-groove, 79-groove,
8-inverse block, 9-wedge block, 10-rotating shaft, the upper pressure roller of 11-, 12-bends roller seat, 13-arm-tie, 14-sample, 15-pointer, 16-circular scale, and 17-fixes bolt, and 18-fixes nut.
Detailed description of the invention
Being better understood from the present invention for the ease of those skilled in the art, below in conjunction with the drawings and specific embodiments, the present invention will be further described, following is merely illustrative of not limiting protection scope of the present invention.
A kind of 180 ° of bend test fixtures, including bending table 3, the Bending support 7 being fixed on bending table 3, for supporting support arrangement of sample 14, the upper pressure roller 11 for sample 14 is loaded, described Bending support 7 includes left support abutment and right support abutment, left support abutment and right support abutment, along the symmetrical distribution of axis of upper pressure roller 11, are provided with bending drag bascule between left support abutment and right support abutment；A described support arrangement is the inverse block 8 being rotationally connected with left support abutment and right support abutment top respectively, inverse block 8 is provided with wedge block 9, the two sides of wedge block 9 are (namely, with the plane that sample 14 contacts and the plane that inverse block 8 contacts) parallel with the axis of upper pressure roller 11, the thickness of wedge block 9 is from the line progressive additive laterally in the axle center of upper pressure roller 11 Yu bending table 3 center.
In the present embodiment, left support abutment includes:
Base plate 71, it is provided with X to through hole 74 and Z-direction through hole 77, bottom surface is provided with the positioning boss 76 that the T-shaped locating slot with bending table 3 matches, leading flank bottom is provided with groove 79, for indicating left support abutment position on bending table 3, the center of the extended line of groove 79 and Y-direction through hole 75 coincides；
Left riser 72 and right riser 73, lower end is fixed on base plate 71, and top is provided with Y-direction through hole 75, and upper end is provided with groove 78 that communicate, that may pass through rotating shaft key with Y-direction through hole 75；
Described right support abutment is symmetrical with left support abutment, structure is identical；
Left support abutment and right support abutment are fixed on bending table 3 by fixing bolt 17 by the T-shaped locating slot of Z-direction through hole 77 and bending table 3；
Described bending drag bascule is penetrate on left support abutment and right support abutment that X is to the pull bar 5 in through hole 74, and the two ends of pull bar 5 are respectively connected with nut 6；For balancing the sample 14 extrapolability to Bending support 7 in BENDING PROCESS；
Described inverse block 8 is rotationally connected with on left support abutment and right support abutment by rotating shaft 10；Inverse block 8 is between left riser 72 and right riser 73, in inverse block 8, processing has the endoporus and keyway that match with rotating shaft 10, making inverse block 8 key be connected to the middle part of rotating shaft 10, the two ends of rotating shaft 10 can rotate in Y-direction through hole 75, and the axis of rotating shaft 10 is parallel with the axis of upper pressure roller 11；The upper plane of inverse block 8 is provided with locating slot, and wedge block 9 is embedded in locating slot, and the upper plane of wedge block 9 is parallel with the axis of rotating shaft 10.
In the present embodiment, upper pressure roller 11 is rotatably connected on bending roller seat 12 by arm-tie 13, and bending roller seat 12 is arranged on universal testing machine moving beam.
In the present embodiment, the anterior side of bending table 3 being provided with bending scale 4 by stickup and crossed countersunk head screw, bending scale 4 top edge is concordant with bending table 3 upper surface；
Axle center, the end place of described rotating shaft 10 is provided with pointer 15 by screw, and pointer 15 can rotate with rotating shaft 10；, Bending support 7 corresponding to pointer 15 is provided with circular scale 16.
In the present embodiment, bending table 3 is arranged on universal test machine worktable, and the lower plane center of bending table 3 is provided with hole, location, and steady pin 2 is installed in hole in location, and bending table 3 is positioned at universal testing machine table core position；Sidepiece in hole, location is provided with pin-and-hole, installs alignment pin 1, it is prevented that bending table 3 rotates in pin-and-hole；
The upper plane X-direction of described bending table 3 is provided with T-shaped locating slot.
During test, the groove first passed through on bending scale 4 and left support abutment, right support abutment indicates and adjusts left support abutment, right support abutment in the position of bending table；Then sample 14 is positioned on wedge block 9, starting testing machine makes moving beam move down, and upper pressure roller 11 contacts with sample 14 and applies test force, in sample 14 BENDING PROCESS, wedge block 9 can rotate around Bending support 7 with inverse block 8, rotating shaft 10, it is achieved the bend test of 180 degree；The angle of sample bending is read by circular scale 16.After off-test, the outer tension force that the internal stress after bending due to sample 14 produces, make wedge block 9 and inverse block 8 outwards turn over certain angle, so that the internal stresses release of sample 14；Processing gradient on wedge block 9, after off-test, the thicker one end of wedge block 9 is upper, relatively thin one end under, being very easy to just can be taken off so reducing toward the power used by treatment with external measures wedge block 9 and sample 14, wedge block 9 and sample 14, it is time saving and energy saving to operate.And fixture is provided with circular scale 16 angles of display, very intuitively.Adopting duplex pull rod to balance the outside thrust to Bending support 7 that sample 14 produces in BENDING PROCESS, result of the test is accurately and reliably.
Above only describes the ultimate principle of the present invention and preferred implementation, those skilled in the art can make many changes and improvements according to foregoing description, and these changes and improvements should belong to protection scope of the present invention.
Claims (5)
1. 180 ° of bend test fixtures, including bending table, the Bending support being fixed on bending table, for supporting support arrangement of sample, the upper pressure roller for sample is loaded, it is characterized in that: described Bending support includes left support abutment and right support abutment, left support abutment and right support abutment, along the symmetrical distribution of axis of upper pressure roller, are provided with bending drag bascule between left support abutment and right support abutment；A described support arrangement is the inverse block being rotationally connected with left support abutment and right support abutment top respectively, inverse block is provided with wedge block, the two sides of wedge block are parallel with the axis of upper pressure roller, and the thickness of wedge block is from the line progressive additive laterally in the axle center of upper pressure roller Yu bending table center.
2. a kind of 180 ° of bend test fixtures according to claim 1, it is characterised in that: described left support abutment includes:
Base plate, being provided with X to through hole and Z-direction through hole, bottom surface is provided with the positioning boss that the T-shaped locating slot with bending table matches, and leading flank bottom is provided with groove, for indicating left support abutment position on bending table, the center of the extended line of groove and Y-direction through hole coincides；
Left riser and right riser, lower end is fixed on base plate, and top is provided with Y-direction through hole, and upper end is provided with groove that communicate, that may pass through rotating shaft key with Y-direction through hole；
Described right support abutment is symmetrical with left support abutment, structure is identical；
Left support abutment and right support abutment are fixed on bending table by fixing bolt by the T-shaped locating slot of Z-direction through hole and bending table；
Described bending drag bascule is penetrate on left support abutment and right support abutment that X is to the pull bar in through hole, and the two ends of pull bar are respectively connected with nut；
Described inverse block is connected on left support abutment and right support abutment by axis of rotation；Inverse block is between left riser and right riser, and in inverse block, processing has the endoporus and keyway that match with rotating shaft, makes inverse block key be connected to the middle part of rotating shaft, and the two ends of rotating shaft can rotate in Y-direction through hole, and the axis of rotating shaft is parallel with the axis of upper pressure roller；The upper plane of inverse block is provided with locating slot, and wedge block is embedded in locating slot, and the upper plane of wedge block is parallel with the axis of rotating shaft.
3. a kind of 180 ° of bend test fixtures according to claim 1, it is characterised in that: described upper pressure roller is rotatably connected on bending roller seat by arm-tie, and bending roller seat is arranged on universal testing machine moving beam.
4. a kind of 180 ° of bend test fixtures according to claim 1, it is characterised in that: the anterior side of described bending table is provided with bending scale, and bending scale top edge is concordant with bending table upper surface；
Axle center, the end place of described rotating shaft is provided with pointer, and pointer can rotate with rotating shaft；, Bending support corresponding to pointer is provided with circular scale.
5. a kind of 180 ° of bend test fixtures according to claim 1, it is characterized in that: described bending table is arranged on universal test machine worktable, the lower plane center of bending table is provided with hole, location, steady pin is installed in hole in location, and bending table is positioned at universal testing machine table core position；Sidepiece in hole, location is provided with pin-and-hole, installs alignment pin, it is prevented that bending table rotates in pin-and-hole；
The upper plane of described bending table is provided with T-shaped locating slot in X-direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610215993.3A CN105784470A (en) | 2016-04-10 | 2016-04-10 | 180-degree bending test fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610215993.3A CN105784470A (en) | 2016-04-10 | 2016-04-10 | 180-degree bending test fixture |
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| CN105784470A true CN105784470A (en) | 2016-07-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610215993.3A Pending CN105784470A (en) | 2016-04-10 | 2016-04-10 | 180-degree bending test fixture |
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| CN (1) | CN105784470A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107219118A (en) * | 2017-05-26 | 2017-09-29 | 上海研微电子科技有限公司 | A kind of performance test fixture of flexible display material under the conditions of specific curvature |
| CN108645716A (en) * | 2018-07-11 | 2018-10-12 | 天津泰格瑞祥仪器设备有限公司 | Bend test system |
| CN114088514A (en) * | 2021-11-22 | 2022-02-25 | 中铁十七局集团第一工程有限公司 | Clamp for concrete axial tensile test |
| CN114397178A (en) * | 2022-01-24 | 2022-04-26 | 济南纳斯诺工业测试系统有限公司 | Load testing device for autoclaved aerated concrete plate |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107219118A (en) * | 2017-05-26 | 2017-09-29 | 上海研微电子科技有限公司 | A kind of performance test fixture of flexible display material under the conditions of specific curvature |
| CN108645716A (en) * | 2018-07-11 | 2018-10-12 | 天津泰格瑞祥仪器设备有限公司 | Bend test system |
| CN114088514A (en) * | 2021-11-22 | 2022-02-25 | 中铁十七局集团第一工程有限公司 | Clamp for concrete axial tensile test |
| CN114088514B (en) * | 2021-11-22 | 2023-12-29 | 中铁十七局集团第一工程有限公司 | Clamp for concrete axial tensile test |
| CN114397178A (en) * | 2022-01-24 | 2022-04-26 | 济南纳斯诺工业测试系统有限公司 | Load testing device for autoclaved aerated concrete plate |
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Application publication date: 20160720 |