CN110595879A - Clamp suitable for torsion fatigue test of samples of various specifications - Google Patents
Clamp suitable for torsion fatigue test of samples of various specifications Download PDFInfo
- Publication number
- CN110595879A CN110595879A CN201910972270.1A CN201910972270A CN110595879A CN 110595879 A CN110595879 A CN 110595879A CN 201910972270 A CN201910972270 A CN 201910972270A CN 110595879 A CN110595879 A CN 110595879A
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- China
- Prior art keywords
- clamp
- piston rod
- cylinder
- samples
- cylinder body
- Prior art date
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- Pending
Links
- 238000009661 fatigue test Methods 0.000 title claims abstract description 22
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 4
- 238000012360 testing method Methods 0.000 claims description 5
- 238000006073 displacement reaction Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 230000009471 action Effects 0.000 abstract description 3
- 239000003921 oil Substances 0.000 abstract description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000007665 sagging Methods 0.000 description 1
Classifications
-
- 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
-
- 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
- G01N2203/0021—Torsional
-
- 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
- G01N2203/0058—Kind of property studied
- G01N2203/0069—Fatigue, creep, strain-stress relations or elastic constants
- G01N2203/0073—Fatigue
-
- 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
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/04—Chucks, fixtures, jaws, holders or anvils
- G01N2203/0411—Chucks, fixtures, jaws, holders or anvils using pneumatic or hydraulic pressure
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)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention relates to a clamp suitable for torsion fatigue tests of samples of various specifications, which comprises two clamp bodies which are oppositely arranged, namely a first clamp body and a second clamp body, wherein the first clamp body is connected with a swing cylinder to be used as an active end, the second clamp body is fixed on a bracket through an expansion sleeve and a torque sensor to be used as a fixed end, and the two clamp bodies jointly clamp the samples to finish the torsion fatigue tests; the fixture body adopts a piston type oil cylinder structure and comprises a cylinder body and a piston rod, the front end of the cylinder body is provided with an opening, the front end of the piston rod is connected with a pair of clamping blocks and moves inside and outside the opening of the cylinder body passively, when the cylinder body is displaced axially along the piston rod under the action of high-pressure hydraulic oil, the openings of the clamping blocks are reduced or increased, so that a sample is clamped or loosened, and the clamping blocks clamp the sample to rotate in a positive and negative swing angle along with the fixture body under the driving of the swing cylinder. The clamp has the advantages that the clamp blocks are convenient to replace, the labor intensity and the production cost are reduced, and the production efficiency is improved.
Description
Technical Field
The invention relates to a clamp, in particular to a clamp suitable for torsion fatigue tests of samples with various specifications.
Background
The universal material sample for the torsional fatigue test is a bar with different diameters, the clamping of the bar sample in the market is realized by adopting an expansion sleeve mode at present, and the corresponding expansion sleeve is replaced aiming at the samples with different diameters.
Disclosure of Invention
The invention aims to provide a clamp suitable for torsion fatigue tests of samples with various specifications. The clamp has the advantages that the clamp blocks are convenient to replace, the labor intensity and the production cost are reduced, and the production efficiency is improved.
In order to achieve the purpose, the invention adopts the following technical scheme:
a clamp suitable for torsion fatigue tests of samples of various specifications comprises two clamp bodies which are oppositely arranged, namely a first clamp body and a second clamp body, wherein the first clamp body is connected with a swing cylinder to serve as an active end, the second clamp body is fixed to a support through an expansion sleeve and a torque sensor to serve as a fixed end, and the two clamp bodies jointly clamp the samples to complete the torsion fatigue tests; the fixture body adopts a piston type oil cylinder structure and comprises a cylinder body and a piston rod, the front end of the cylinder body is provided with an opening, the front end of the piston rod is connected with a pair of clamping blocks and moves inside and outside the opening of the cylinder body passively, when the cylinder body is displaced axially along the piston rod under the action of high-pressure hydraulic oil, the openings of the clamping blocks are reduced or increased, so that a sample is clamped or loosened, and the clamping blocks clamp the sample to rotate in a positive and negative swing angle along with the fixture body under the driving of the swing cylinder.
Furthermore, a guide sleeve and a positioning pin for preventing the cylinder body and the piston rod from rotating relatively are arranged between the piston rod and the cylinder body.
Furthermore, the rear end of the clamp body is buckled with a positioning end cover.
Furthermore, the rear end of the piston rod penetrates through the supporting seat and then is connected with the swing cylinder through the diaphragm type coupler, and the swing cylinder rotates in a positive and negative swing angle to drive the piston rod to rotate, namely the clamp body rotates in the positive and negative swing angle.
Furthermore, two pairs of bearings are arranged in the supporting seat, and one end of the piston rod penetrates through the bearings to be connected with the diaphragm type coupling.
Furthermore, the clamping block is connected to the front end of the piston rod through a screw and a spring, and the clamping block slides in a guide groove at the front end of the cylinder body under the driving of the cylinder body and is reset through the restoring force of the spring.
Furthermore, one surface of the clamping block, which is opposite to the clamping surface, is an inclined surface, and the inclined surface of the clamping block is in friction fit with the inclined surface of the guide groove.
Furthermore, the section of the clamping surface of the clamping block is V-shaped.
Compared with the prior art, the invention has the beneficial effects that:
according to the clamp suitable for the torsional fatigue test of the samples with various specifications, the piston type oil cylinder is adopted to drive the clamping blocks to clamp or loosen the samples, a plurality of groups of V-shaped clamping blocks can be provided according to the samples with different size ranges, the clamping range of each group of clamping blocks depends on the axial displacement amount of the cylinder body relative to the piston rod in the clamp body, the test can be carried out by simply replacing the clamping blocks according to the sizes of the samples, the operation is simple, the labor intensity and the production cost are reduced, and the production efficiency is improved.
Drawings
In order to more clearly illustrate the embodiments of the present application or technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to the drawings.
FIG. 1 is a front view of the clamp of the present invention suitable for torsional fatigue testing of test specimens of various specifications;
FIG. 2 is a non-cross-sectional view of the clamp body of the present invention;
FIG. 3 is a side view of the clamp block of the present invention;
FIG. 4 is a front view of the clamp block of the present invention;
FIG. 5 is a side view of the piston rod of the first clamp body of the present invention;
figure 6 is a front view of the piston rod of the first clamp body of the present invention.
Detailed Description
In order to make the technical solutions of the present invention better understood, the present invention is further described below with reference to the accompanying drawings:
the clamp suitable for the torsional fatigue tests of the samples with various specifications shown in fig. 1-6 comprises two oppositely arranged clamp bodies, namely a first clamp body and a second clamp body, wherein the first clamp body is connected with a swing cylinder 10 to serve as an active end, the second clamp body is fixed to a support 14 through an expansion sleeve 12 and a torque sensor 13 to serve as a fixed end, and the two clamp bodies clamp the samples together to complete the torsional fatigue tests; the fixture body adopts piston cylinder structure, including cylinder body 2 and piston rod 3, 2 front end openings of cylinder body, 3 front ends of piston rod connect a pair of clamp splice 1 and move passively inside and outside 2 openings of cylinder body, when cylinder body 2 takes place axial displacement along piston rod 3 under the effect of high-pressure hydraulic oil, the opening of a pair of clamp splice 1 will reduce or increase to press from both sides tight or loosen sample 11, clamp splice 1 and press from both sides sample 11 and do positive and negative pivot angle rotation along the fixture body under the drive of swing cylinder 10.
Preferably, a guide sleeve 4 and a positioning pin 5 for preventing the cylinder 2 and the piston rod 3 from rotating relatively are arranged between the piston rod 3 and the cylinder 2. The rear end of the clamp body is buckled with a positioning end cover 6.
The rear end of the piston rod 3 penetrates through the supporting seat 7 and then is connected with the oscillating cylinder 10 through the diaphragm type coupler 9, and the oscillating cylinder 10 rotates in a positive and negative oscillating angle to drive the piston rod 3 to rotate, namely the clamp body rotates in the positive and negative oscillating angle. Two pairs of bearings 8 are arranged in the supporting seat 7, one end of the piston rod 3 penetrates through the bearings 8 to be connected with the diaphragm type coupling 9, the bearings 8 are used for increasing the supporting length of the rear end of the piston rod 3, so that the clamp body is prevented from sagging under the action of self weight, and the coaxiality of a clamped sample 11 is ensured to be basically unchanged.
The clamping block 1 is connected to the front end of the piston rod 3 through a screw 15 and a spring 16, and the clamping block 1 slides in a guide groove 17 at the front end of the cylinder body 2 under the driving of the cylinder body 2 and is reset through the restoring force of the spring 16. The opposite side of the clamping block 1 and the clamping surface is an inclined surface, and the inclined surface of the clamping block 1 is in friction fit with the inclined surface of the guide groove 16. The section of the clamping surface of the clamping block 1 is V-shaped. The clamping blocks 1 are provided with a plurality of groups of V-shaped clamping blocks, the clamping range of each group of clamping blocks 1 depends on the axial displacement of the cylinder body 2 relative to the piston rod 3 in the clamp body, and the test can be carried out by simply replacing the clamping blocks 1 according to samples with different size ranges.
The above-mentioned embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solution of the present invention by those skilled in the art should fall within the protection scope defined by the claims of the present invention without departing from the spirit of the present invention.
Claims (8)
1. The utility model provides an anchor clamps suitable for multiple specification sample twists reverse fatigue test which characterized in that: the test fixture comprises two oppositely arranged fixture bodies, namely a first fixture body and a second fixture body, wherein the first fixture body is connected with a swing cylinder (10) to serve as an active end, the second fixture body is fixed to a support (14) through an expansion sleeve (12) and a torque sensor (13) to serve as a fixed end, and the two fixture bodies jointly clamp a test sample to complete a torsional fatigue test; the fixture body adopts piston cylinder structure, including cylinder body (2) and piston rod (3), cylinder body (2) front end opening, a pair of clamp splice (1) and passive activity are inside and outside cylinder body (2) opening to piston rod (3) front end connection, when cylinder body (2) take place axial displacement along piston rod (3) under the effect of high-pressure hydraulic oil, the opening of a pair of clamp splice (1) will reduce or increase to press from both sides tightly or loosen sample (11), clamp splice (1) and press from both sides sample (11) and follow the fixture body and do positive and negative pivot angle rotation under the drive of swing cylinder (10).
2. The clamp suitable for the torsional fatigue test of samples with various specifications as claimed in claim 1, wherein: and a guide sleeve (4) and a positioning pin (5) for preventing the cylinder body (2) and the piston rod (3) from rotating relatively are arranged between the piston rod (3) and the cylinder body (2).
3. The clamp suitable for the torsional fatigue test of samples with various specifications as claimed in claim 1, wherein: the rear end of the clamp body is buckled with a positioning end cover (6).
4. The clamp suitable for the torsional fatigue test of samples with various specifications as claimed in claim 1, wherein: the rear end of the piston rod (3) penetrates through the supporting seat (7) and then is connected with the swing cylinder (10) through the diaphragm type coupler (9), and the swing cylinder (10) rotates in a positive and negative swing angle to drive the piston rod (3) to rotate, namely, the clamp body rotates in the positive and negative swing angle.
5. The clamp suitable for the torsional fatigue test of samples with various specifications as claimed in claim 4, wherein: two pairs of bearings (8) are arranged in the supporting seat (7), and one end of the piston rod (3) penetrates through the bearings (8) to be connected with the diaphragm type coupler (9).
6. The clamp suitable for the torsional fatigue test of samples with various specifications as claimed in claim 1, wherein: the clamping block (1) is connected to the front end of the piston rod (3) through a screw (15) and a spring (16), and the clamping block (1) slides in a guide groove (17) at the front end of the cylinder body (2) under the driving of the cylinder body (2) and is reset through the restoring force of the spring (16).
7. The clamp suitable for the torsional fatigue test of samples with various specifications as claimed in claim 6, wherein: the clamping block (1) and the opposite side of the clamping surface are inclined surfaces, and the inclined surfaces of the clamping block (1) are in friction fit with the inclined surfaces of the guide grooves (17).
8. The clamp suitable for the torsional fatigue test of samples with various specifications as claimed in claim 7, wherein: the section of the clamping surface of the clamping block (1) is V-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910972270.1A CN110595879A (en) | 2019-10-14 | 2019-10-14 | Clamp suitable for torsion fatigue test of samples of various specifications |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910972270.1A CN110595879A (en) | 2019-10-14 | 2019-10-14 | Clamp suitable for torsion fatigue test of samples of various specifications |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110595879A true CN110595879A (en) | 2019-12-20 |
Family
ID=68866981
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910972270.1A Pending CN110595879A (en) | 2019-10-14 | 2019-10-14 | Clamp suitable for torsion fatigue test of samples of various specifications |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110595879A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114324032A (en) * | 2021-12-20 | 2022-04-12 | 中机试验装备股份有限公司 | Be used for high temperature low cycle fatigue test anchor clamps |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012242173A (en) * | 2011-05-17 | 2012-12-10 | Shimadzu Corp | Material testing machine |
| CN103760014A (en) * | 2013-12-24 | 2014-04-30 | 深圳市瑞格尔仪器有限公司 | Hydraulic horizontally pushing clamp |
| CN203643250U (en) * | 2013-12-24 | 2014-06-11 | 深圳市瑞格尔仪器有限公司 | Hydraulic horizontal push clamp |
| CN207991973U (en) * | 2018-03-16 | 2018-10-19 | 华北理工大学 | Rock sample torsional fracture breaking test device |
| CN109738179A (en) * | 2019-03-18 | 2019-05-10 | 南昌航空大学 | A kind of fatigue test clamper of HF fatigue testing machine |
| CN210741998U (en) * | 2019-10-14 | 2020-06-12 | 长春仟邦测试设备有限公司 | Clamp suitable for torsion fatigue test of samples of various specifications |
-
2019
- 2019-10-14 CN CN201910972270.1A patent/CN110595879A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012242173A (en) * | 2011-05-17 | 2012-12-10 | Shimadzu Corp | Material testing machine |
| CN103760014A (en) * | 2013-12-24 | 2014-04-30 | 深圳市瑞格尔仪器有限公司 | Hydraulic horizontally pushing clamp |
| CN203643250U (en) * | 2013-12-24 | 2014-06-11 | 深圳市瑞格尔仪器有限公司 | Hydraulic horizontal push clamp |
| CN207991973U (en) * | 2018-03-16 | 2018-10-19 | 华北理工大学 | Rock sample torsional fracture breaking test device |
| CN109738179A (en) * | 2019-03-18 | 2019-05-10 | 南昌航空大学 | A kind of fatigue test clamper of HF fatigue testing machine |
| CN210741998U (en) * | 2019-10-14 | 2020-06-12 | 长春仟邦测试设备有限公司 | Clamp suitable for torsion fatigue test of samples of various specifications |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114324032A (en) * | 2021-12-20 | 2022-04-12 | 中机试验装备股份有限公司 | Be used for high temperature low cycle fatigue test anchor clamps |
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| PB01 | Publication | ||
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