CN107941596A - A kind of pinion and-rack bidirectional tensile tester - Google Patents
A kind of pinion and-rack bidirectional tensile tester Download PDFInfo
- Publication number
- CN107941596A CN107941596A CN201711097137.3A CN201711097137A CN107941596A CN 107941596 A CN107941596 A CN 107941596A CN 201711097137 A CN201711097137 A CN 201711097137A CN 107941596 A CN107941596 A CN 107941596A
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- Prior art keywords
- rack
- die holder
- pinion
- gear
- tensile tester
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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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0017—Tensile
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/0032—Generation of the force using mechanical means
- G01N2203/0037—Generation of the force using mechanical means involving a rotating movement, e.g. gearing, cam, eccentric, or centrifuge effects
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- 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)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a kind of pinion and-rack bidirectional tensile tester, it is characterized in that, including upper mold seat, die holder and four synchronous stretching devices between the upper mold seat and the die holder, four synchronous stretching devices are in cross distribution, connected between the upper mold seat and the die holder by two guiders, described two guiders are diagonally positioned, and the guider is between the two neighboring synchronous stretching device；The upper mold seat is fixed on press.The present invention has the advantages that easy to use, simple in structure, cost is low, small, can complete biaxial tensile test requirement.
Description
Technical field
The invention belongs to material mechanical performance testing field, and in particular to a kind of pinion and-rack biaxial tensile test dress
Put.
Background technology
For anisotropic material, it is that it is impossible to meet engineer application to obtain its mechanical property using only one directional tensile test
It is required that, particularly with having the characteristics that the sheet metal of anisotropy.Sheet metal is due to rolling so that it is rolled on edge
Direction processed and there is different mechanical properties perpendicular to rolling direction.And the forming process of sheet metal is mostly in complex stress
Completed under state.In order to meet needs, the experimental rig for testing plate mechanical property under complex loading state investigated.
Bidirectional tensile tester is exactly wherein important one kind.Biaxial tensile test is along mutually perpendicular direction by cross sample
The experiment process stretched according to certain loading ratio.Mechanical property except the material under different load conditions can be obtained
Energy, can also obtain the yield surface of material.The accuracy of material constitutive equation can be greatly improved by obtaining accurate yield surface, from
And the accuracy of forming process numbered analog simulation is improved, the ducts starting cost of forming process so can be both reduced, can also be given
Optimization design provides guidance, significant to material forming.
At present, testing equipment supplier such as MTS and Zwick has produced the biaxial tensile test for meeting test requirements document
Machine, but since its price is extremely expensive, do not bought by Most scholars.And in the homemade testing equipment of scholar, have
Experiment needs could be realized by needing the structure of the complexity such as hydraulic control；Equipment, the costs such as the driving of some need motor are higher；Have
Equipment bulky structure is not compact enough.
To sum up, one kind can realize biaxial tensile test, have the advantages that the gear that simple in structure, cost is low, small
Rack-and-pinion bidirectional tensile tester is urgently researched and developed.
The content of the invention
According to technical problem set forth above, and provide a kind of pinion and-rack bidirectional tensile tester.This present invention
The technological means of use is as follows：
A kind of pinion and-rack bidirectional tensile tester, including upper mold seat, die holder and positioned at the upper mold seat and institute
State four synchronous stretching devices (bi-directional synchronization stretching can be carried out to sample) between die holder, four synchro-draws dress
It is in cross distribution to put, and (is ensured between the upper mold seat and the die holder by two guider connections on the upper mold seat
The not translation in occurred level direction, plays guiding role during lower movement), described two guiders are in diagonally to set
Put, the guider is between the two neighboring synchronous stretching device；
The upper mold seat is fixed on press.
The synchronous stretching device includes horizontal rack, vertical rack and pinion；
The horizontal rack lower surface has draw runner, and the horizontal rack is by the draw runner with being located on the die holder
The sliding slot on surface is slidably connected, and the extending direction of the sliding slot is directed toward the midpoint of the cross distribution, and the horizontal rack is leaned on
The one end at the nearly midpoint has sample connecting portion；
The gear is engaged and (realized transmission direction by vertical direction with the horizontal rack and the vertical rack respectively
It is transformed to the purpose of horizontal direction), the gear shaft of the gear is connected by gear shaft stool with the die holder upper surface；
The upper end of the vertical rack is fixedly connected by vertical rack base with the upper mold seat lower surface.
The guider includes the guide post base positioned at the die holder upper surface, and the guide post base is equipped with and leads
Column, the upper mold seat lower surface are equipped with the guide sleeve to match with the guide post.
The die holder outer has the U-shaped limited location snap ring that the vertical rack lower end passes through, and limits the vertical rack
Movement on the horizontal level, ensures that the vertical rack is moved along vertical direction.
The sample connecting portion has link slot, and the link slot includes the class dovetail groove and rectangle close to the midpoint
Groove, the axis of the class dovetail groove and the axis of the rectangular channel, which are located on the same straight line by the midpoint, (ensure that double
Overlapped to the symmetrical centre of tensile sample with the midpoint), the small end of the class dovetail groove close to the midpoint and opens wide, described
The big end of class dovetail groove close to the matching of the side at the midpoint and connects, two cell walls of the class dovetail groove with the rectangular channel
For to the projecting inward arc cell wall of the class dovetail groove.
The moving direction of the moving direction of the horizontal rack and the vertical rack is different vertical positioned at two respectively
In plane.
The gear includes the first sub- gear and the second sub- gear, the first sub- gear and the second sub- gear difference
Engaged with the horizontal rack and the vertical rack.
A kind of pinion and-rack bidirectional tensile tester can be by replacing the gear and the horizontal rack
And the gearratio of the gear and the vertical rack, realize the purpose that inequality proportion loads.
The present invention is coordinated using horizontal rack and sliding slot, realizes the centralized positioning of biaxial tension sample；And devise tooth
The mechanical structure that wheel is engaged with horizontal rack and vertical rack at the same time, realizes vertical direction transmission being converted to horizontal direction biography
Dynamic purpose, so as to provide pulling force for biaxial tension sample；And by changing gear and horizontal rack and the biography of vertical rack
Dynamic ratio, it is possible to achieve the experimental condition of inequality proportion loading.The present invention have it is easy to use, it is simple in structure, cost is low, small
The advantages that, biaxial tensile test requirement can be completed.
The present invention can be widely popularized in fields such as material mechanical performance tests for the foregoing reasons.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is attached drawing needed in technology description to do simply to introduce, it should be apparent that, drawings in the following description are this hairs
Some bright embodiments, for those of ordinary skill in the art, without having to pay creative labor, can be with
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is a kind of structural representation of pinion and-rack bidirectional tensile tester in embodiment of the invention
Figure.
Fig. 2 is that a kind of internal structure of pinion and-rack bidirectional tensile tester is shown in embodiment of the invention
It is intended to.
Fig. 3 is the structure diagram of biaxial tension sample in embodiment of the invention.
Fig. 4 is sectional view along A-A in Fig. 3.
Fig. 5 is the front view of horizontal rack in embodiment of the invention.
Fig. 6 is the left view of horizontal rack in embodiment of the invention.
Fig. 7 is the top view of horizontal rack in embodiment of the invention.
Fig. 8 is the embodiment middle gear of the present invention and the structure diagram of gear shaft.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, the technical solution in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
Part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
All other embodiments obtained without making creative work, belong to the scope of protection of the invention.
As Figure 1-Figure 8, a kind of pinion and-rack bidirectional tensile tester, including upper mold seat 1, die holder 2 and position
Four synchronous stretching devices between the upper mold seat 1 and the die holder 2, four synchronous stretching devices are in cross point
Cloth, is connected between the upper mold seat 1 and the die holder 2 by two guiders, and described two guiders are in diagonally to set
Put, the guider is between the two neighboring synchronous stretching device；
The upper mold seat 1 is fixed on press.
The synchronous stretching device includes horizontal rack 3, vertical rack 4 and gear 5；
3 lower surface of horizontal rack has a draw runner 31, the horizontal rack 3 by the draw runner 31 with described
The sliding slot of 2 upper surface of die holder is slidably connected, and the extending direction of the sliding slot is directed toward the midpoint of the cross distribution, the horizontal teeth
The one end at the close midpoint of bar 3 has sample connecting portion；
The gear 5 is engaged with the horizontal rack 3 and the vertical rack 4 respectively, and the gear shaft 51 of the gear 5 is logical
Gear shaft stool 52 is crossed to be connected with 2 upper surface of die holder, the gear shaft stool 52 by hexagon socket cap head screw with
2 upper surface of the die holder connection, the gear shaft 51 are connected by hexagon nut with flange and the gear shaft stool 52 rotation
Connect；
The upper end of the vertical rack 4 is fixedly connected by vertical rack base 41 with 1 lower surface of upper mold seat, described
The upper end of vertical rack 4 is connected by hexagon socket cap head screw with the vertical rack base 41, the vertical rack base
41 are connected by hexagon socket cap head screw with 1 lower surface of upper mold seat.
The guider includes the guide post base 21 positioned at 2 upper surface of die holder, is set on the guide post base 21
There is guide post 6,1 lower surface of upper mold seat is equipped with the guide sleeve 11 to match with the guide post 6, and the guide post base 21 passes through interior six
Angle fillister head screw is connected with 2 upper surface of die holder, and the guide sleeve 11 passes through hexagon socket cap head screw and the upper mold
The connection of 1 lower surface of seat.
2 outer of die holder has the U-shaped limited location snap ring 7 that vertical 4 lower end of rack passes through, the U-shaped limiting card
Ring 7 is connected by hexagon socket cap head screw with 2 outer of die holder.
The sample connecting portion has link slot, and the link slot includes the class dovetail groove 32 and square close to the midpoint
Shape groove 33, the axis of the class dovetail groove 32 and the axis of the rectangular channel 33 are located on the same straight line by the midpoint,
The small end of the class dovetail groove 32 is close to the midpoint and opens wide, and the big end of the class dovetail groove 32 and the rectangular channel 33 are close
The side matching and connection at the midpoint, two cell walls of the class dovetail groove are to the projecting inward arc groove of the class dovetail groove
Wall 321.
The moving direction of the moving direction of the horizontal rack 3 and the vertical rack 4 is different perpendicular positioned at two respectively
In straight plane.
The gear 5 includes the first sub- 53 and second sub- gear 54 of gear, the first sub- gear 53 and second son
Gear 54 is engaged with the horizontal rack 3 and the vertical rack 4 respectively.
The end of biaxial tension sample 8 matches with the link slot, and by biaxial tension sample fixed plate 9 with it is described
Link slot connects, and the end of the biaxial tension sample 8 is put into the link slot, presses the upper biaxial tension sample to fix thereon
Plate 9, and fixed by hexagon socket cap head screw.
Press moves straight up, and the upper mold seat 1 moves up, and band moving gear 5 rotates, and then drives horizontal rack 3
Moved along sliding slot direction, biaxial tension sample 8 is under tension, so as to complete biaxial tensile test.
Finally it should be noted that：The above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe is described in detail the present invention with reference to foregoing embodiments, it will be understood by those of ordinary skill in the art that：Its according to
Can so modify to the technical solution described in foregoing embodiments, either to which part or all technical characteristic into
Row equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is departed from various embodiments of the present invention technology
The scope of scheme.
Claims (7)
1. a kind of pinion and-rack bidirectional tensile tester, it is characterised in that including upper mold seat, die holder and on described
Four synchronous stretching devices between die holder and the die holder, four synchronous stretching devices are in cross distribution, it is described on
Connected between die holder and the die holder by two guiders, described two guiders are diagonally positioned, the guiding
Device is between the two neighboring synchronous stretching device；
The upper mold seat is fixed on press.
A kind of 2. pinion and-rack bidirectional tensile tester according to claim 1, it is characterised in that：The synchronous drawing
Stretching device includes horizontal rack, vertical rack and pinion；
The horizontal rack lower surface has draw runner, and the horizontal rack is by the draw runner and is located at the die holder upper surface
Sliding slot be slidably connected, the extending direction of the sliding slot is directed toward the midpoint of the cross distribution, the close institute of the horizontal rack
The one end for stating midpoint has sample connecting portion；
The gear is engaged with the horizontal rack and the vertical rack respectively, and the gear shaft of the gear passes through gear shaft branch
Seat is connected with the die holder upper surface；
The upper end of the vertical rack is fixedly connected by vertical rack base with the upper mold seat lower surface.
A kind of 3. pinion and-rack bidirectional tensile tester according to claim 1, it is characterised in that：It is described to be oriented to dress
Put including the guide post base positioned at the die holder upper surface, the guide post base is equipped with guide post, the upper mold seat lower surface
Equipped with the guide sleeve to match with the guide post.
A kind of 4. pinion and-rack bidirectional tensile tester according to claim 2, it is characterised in that：The die holder
Outer has the U-shaped limited location snap ring that the vertical rack lower end passes through.
A kind of 5. pinion and-rack bidirectional tensile tester according to claim 2, it is characterised in that：The sample connects
Socket part has link slot, and the link slot includes the class dovetail groove and rectangular channel close to the midpoint, the class dovetail groove
The axis of axis and the rectangular channel is located on the same straight line by the midpoint, and the small end of the class dovetail groove is close to described
Midpoint and open wide, the big end of the class dovetail groove is matched and connected, the class close to the side at the midpoint with the rectangular channel
Two cell walls of dovetail groove are to the projecting inward arc cell wall of the class dovetail groove.
A kind of 6. pinion and-rack bidirectional tensile tester according to claim 2, it is characterised in that：The horizontal teeth
The moving direction of the moving direction of bar and the vertical rack is respectively in two different perpendiculars.
A kind of 7. pinion and-rack bidirectional tensile tester according to claim 6, it is characterised in that：The gear bag
Include the first sub- gear and the second sub- gear, the first sub- gear and the second sub- gear respectively with the horizontal rack and institute
State vertical rack engagement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711097137.3A CN107941596A (en) | 2017-11-09 | 2017-11-09 | A kind of pinion and-rack bidirectional tensile tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711097137.3A CN107941596A (en) | 2017-11-09 | 2017-11-09 | A kind of pinion and-rack bidirectional tensile tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107941596A true CN107941596A (en) | 2018-04-20 |
Family
ID=61934619
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711097137.3A Pending CN107941596A (en) | 2017-11-09 | 2017-11-09 | A kind of pinion and-rack bidirectional tensile tester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107941596A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109946182A (en) * | 2019-03-18 | 2019-06-28 | 三峡大学 | A kind of pulse force loading device and its method suitable for sheet metal biaxial tensile test |
| CN111751217A (en) * | 2020-06-29 | 2020-10-09 | 西安建筑科技大学 | Horizontal concrete uniaxial tensile test device and use method thereof |
| CN113390717A (en) * | 2021-06-22 | 2021-09-14 | 安徽省水利水电工程检测有限公司 | Tensile detection device and detection method for rock-soil body |
| CN114506180A (en) * | 2022-02-21 | 2022-05-17 | 上海立达学院有限公司 | Art planar design typeface adjusting device |
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| US20090282929A1 (en) * | 2008-05-14 | 2009-11-19 | Fadi Abu-Farha | Uniaxially-driven controlled biaxial testing fixture |
| CN105424471A (en) * | 2015-12-24 | 2016-03-23 | 合肥工业大学 | Sheet metal bidirectional stretching apparatus based on die technology |
| CN205209873U (en) * | 2015-11-19 | 2016-05-04 | 中国矿业大学(北京) | Tensile anchor clamps of experiment machine suitable for scanning electron microscope |
| CN106989988A (en) * | 2017-04-25 | 2017-07-28 | 上海交通大学 | A kind of device that uniaxial pressure is converted to multidirectional pulling force and pressure |
-
2017
- 2017-11-09 CN CN201711097137.3A patent/CN107941596A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090282929A1 (en) * | 2008-05-14 | 2009-11-19 | Fadi Abu-Farha | Uniaxially-driven controlled biaxial testing fixture |
| CN205209873U (en) * | 2015-11-19 | 2016-05-04 | 中国矿业大学(北京) | Tensile anchor clamps of experiment machine suitable for scanning electron microscope |
| CN105424471A (en) * | 2015-12-24 | 2016-03-23 | 合肥工业大学 | Sheet metal bidirectional stretching apparatus based on die technology |
| CN106989988A (en) * | 2017-04-25 | 2017-07-28 | 上海交通大学 | A kind of device that uniaxial pressure is converted to multidirectional pulling force and pressure |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109946182A (en) * | 2019-03-18 | 2019-06-28 | 三峡大学 | A kind of pulse force loading device and its method suitable for sheet metal biaxial tensile test |
| CN109946182B (en) * | 2019-03-18 | 2022-02-01 | 三峡大学 | Pulse force loading device and method suitable for sheet metal biaxial tension test |
| CN111751217A (en) * | 2020-06-29 | 2020-10-09 | 西安建筑科技大学 | Horizontal concrete uniaxial tensile test device and use method thereof |
| CN113390717A (en) * | 2021-06-22 | 2021-09-14 | 安徽省水利水电工程检测有限公司 | Tensile detection device and detection method for rock-soil body |
| CN114506180A (en) * | 2022-02-21 | 2022-05-17 | 上海立达学院有限公司 | Art planar design typeface adjusting device |
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Application publication date: 20180420 |
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