CN209945899U - Bending resilience testing device - Google Patents
Bending resilience testing device Download PDFInfo
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- CN209945899U CN209945899U CN201920760007.1U CN201920760007U CN209945899U CN 209945899 U CN209945899 U CN 209945899U CN 201920760007 U CN201920760007 U CN 201920760007U CN 209945899 U CN209945899 U CN 209945899U
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- rotating shaft
- bending
- arm
- push rod
- rod
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Abstract
The utility model belongs to the technical field of crooked resilience test, a crooked resilience testing arrangement is disclosed, include: the bending mechanism comprises a base, a first bending arm, a second bending arm, a bending core structure and a bending arm pushing structure; a first rotating shaft groove is formed in the base; a first rotating shaft is arranged at the first end of the first bending arm and is rotatably embedded in the first rotating shaft groove, a second rotating shaft groove is formed in the first rotating shaft, and the rotating central axis of the second rotating shaft groove is superposed with the rotating central axis of the first rotating shaft groove; a second rotating shaft is arranged at the first end of the second bending arm and can be rotatably embedded in a groove of the second rotating shaft; the bent core structure is fixed on the base, and the head end of the bent core structure points to the first rotating shaft groove and can be radially close to or far away from the first rotating shaft groove; the curved arm pushing structure abuts against the first curved arm and the second curved arm. The utility model provides a can restrict the scope of surrender to keep its stable crooked resilient testing arrangement.
Description
Technical Field
The utility model relates to a crooked resilience test technical field, in particular to crooked resilience testing arrangement.
Background
The springback is an inevitable phenomenon in the field of metal plate forming, the existence of the springback influences the geometric dimension precision of the formed part, and great challenges are brought to the design and assembly of the part. In the prior art, the resilience performance of the metal plate is tested through a bending resilience test, and a V-bend test is usually adopted. In the prior art, the two ends of the sample are pushed to be gradually bent by the force application structure, and in the bending process of the sample, the material near the bending core is gradually yielded and is close to the bending core in the bending process. However, in the prior art, the yield already occurs because the bending core is not contacted with the bending core after bending, so that the yield range is large; and the yield range is different with the change of the bending angle.
SUMMERY OF THE UTILITY MODEL
The utility model provides a crooked resilient testing device, it is big to solve crooked yield scope of bending resilience test pilot scale among the prior art, changes its technical problem that the yield scope also changes along with the angle.
In order to solve the technical problem, the utility model provides a crooked resilient testing device, include: the bending mechanism comprises a base, a first bending arm, a second bending arm, a bending core structure and a bending arm pushing structure;
a first rotating shaft groove is formed in the base;
a first rotating shaft is arranged at the first end of the first bending arm and is rotatably embedded in the first rotating shaft groove, a second rotating shaft groove is formed in the first rotating shaft, and the rotating central axis of the second rotating shaft groove is superposed with the rotating central axis of the first rotating shaft groove;
a second rotating shaft is arranged at the first end of the second bending arm and is rotatably embedded in the second rotating shaft groove;
the bent core structure is fixed on the base, and the head end of the bent core structure points to the first rotating shaft groove and can be radially close to or far away from the first rotating shaft groove;
the bent arm pushing structure is abutted against the first bent arm and the second bent arm and can push the first bent arm and the second bent arm to rotate;
the first bending arm is provided with a first object placing surface, the second bending arm is provided with a second object placing surface, the first object placing surface is located between the body of the first bending arm and the bending core structure, and the second object placing surface is located between the body of the second bending arm and the bending core structure.
Furthermore, a first limiting surface perpendicular to the first object placing surface is further formed on the first bending arm, and the first object placing surface is connected with the first limiting surface at the first rotating shaft;
the second bending arm is also provided with a second limiting surface which is vertical to the second object placing surface, and the second object placing surface is connected with the second limiting surface at the second rotating shaft;
when a test sample to be tested is placed on the first object placing surface and the second object placing surface to be bent, the first limiting surface and the second limiting surface abut against each other, and the first object placing surface and the second object placing surface are coplanar.
Further, the first bending arm and the second bending arm are both right-angled triangle plates or 90-degree sector plates.
Further, the bent core structure includes: the guide device comprises a guide seat, a guide rod and a pressure head;
the guide seat is fixed on the base and is provided with a guide hole groove;
the guide rod is movably embedded in the guide hole groove;
the pressure head is fixed at the first end of the guide rod and points to the first rotating shaft groove.
Further, the bending core structure further comprises: a connecting rod, a pressure lever and a spring;
the first end of the connecting rod is fixed on the second end of the guide rod, the second end of the connecting rod is embedded in the pressure rod in an axially movable manner, and the extension directions of the guide rod, the connecting rod and the pressure rod are consistent;
the spring is sleeved outside the connecting rod, and two ends of the spring respectively and correspondingly abut against the second end of the guide rod and the pressure rod one by one;
wherein, the pressure lever is provided with a connecting structure for connecting force application equipment.
Further, the bent arm pushing structure includes: a first push rod, a second push rod and a third push rod;
the first push rod is fixed on the first bending arm, the second push rod is fixed on the second bending arm, and the third push rod abuts against one side, far away from the bent core structure, of the first push rod and the second push rod.
Further, the first push rod and the second push rod are both cylindrical rods;
the circumferential surfaces of the first push rod and the second push rod are abutted against the third push rod;
wherein, the first push rod, the second push rod, the first rotating shaft and the second rotating shaft are in the same direction.
One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:
according to the bending resilience testing device provided by the embodiment of the application, the bending part is limited near the rotating shaft through the first bending arm and the second bending arm which rotate coaxially, and the bending area is further limited through the bending core structure pointing to the rotating shaft and the rotating bending arms, so that the yield range is limited. Meanwhile, the bending arm is provided with an object placing surface for supporting the surface of the test sample, and only part of the bending area is vacated during bending, so that the yield range is further limited. Meanwhile, the bending area is limited in the area near the rotating shaft, so that the problem of inconsistent yield range when the bending angle is changed can be avoided, and the relative stability is kept.
Drawings
Fig. 1 is a schematic structural diagram of a bending resilience testing device provided by the present invention;
fig. 2 is a schematic view of a base structure provided by the present invention;
FIG. 3 is a left side view of FIG. 2;
fig. 4 is a schematic view of a bending core structure provided in an embodiment of the present invention;
fig. 5 is a schematic structural view of a second bending arm according to an embodiment of the present invention;
FIG. 6 is a left side view of FIG. 5;
fig. 7 is a schematic structural view of a first bending arm according to an embodiment of the present invention;
fig. 8 is a left side view of fig. 7.
Detailed Description
The embodiment of the application provides a crooked testing arrangement that kick-backs, and it is big to solve crooked yield range of test sample among the prior art in the crooked experiment of kick-backing, and its yield range also changes along with the angle change technical problem.
In order to better understand the technical solutions, the technical solutions will be described in detail below with reference to the drawings and the specific embodiments of the present disclosure, and it should be understood that the specific features in the embodiments and examples of the present disclosure are detailed descriptions of the technical solutions of the present disclosure, but not limitations of the technical solutions of the present disclosure, and the technical features in the embodiments and examples of the present disclosure may be combined with each other without conflict.
Referring to fig. 1, a bending spring-back test apparatus includes: the bending device comprises a base 1, a first bending arm 7, a second bending arm 6, a bending core structure and a bending arm pushing structure. Specifically, the bending arm pushing structure is operated to push the first bending arm 7 and the second bending arm 6 to rotate around the same rotating shaft center, so that a bending and gathering effect is formed near the rotating shaft, a bending area is limited in a region near the rotating shaft, a yield range is reduced, and a relatively stable state is maintained.
As will be described in detail below.
Referring to fig. 2 and 3, a first rotating shaft groove 11 is formed on the base 1; as the origin of rotation of the first bending arm 7 and the second bending arm 6.
Referring to fig. 5, 6, 7 and 8, specifically, a first end of the first bending arm 7 is provided with a first rotating shaft 72, the first rotating shaft 72 is rotatably embedded in the first rotating shaft groove 11, a second rotating shaft groove 73 is formed in the first rotating shaft 72, and a rotation central axis of the second rotating shaft groove 73 coincides with a rotation central axis of the first rotating shaft groove 72. A second rotating shaft 62 is arranged at a first end of the second bending arm 6, and the second rotating shaft 62 is rotatably embedded in the second rotating shaft groove 73; therefore, when the two bending arms rotate, the formed included angle area is always located in the area near the rotating shaft, so that the yield range is limited, and the yield range can be always stable when the bending angle changes.
In a matching manner, the bent core structure is fixed on the base 1, and the head end of the bent core structure points to the first rotating shaft groove 11 and can be radially close to or far away from the first rotating shaft groove 11; thereby ensuring that the yield range is in the rotating shaft area and is stable and adjustable.
The bending arm pushing structure is abutted against the first bending arm 7 and the second bending arm 6 and can push the first bending arm 7 and the second bending arm 6 to rotate; in this embodiment, the two bending arms are pushed synchronously, i.e. the rotation amplitude is identical, so as to further ensure the stability of the yield range.
Wherein, seted up first object plane of putting on the first crooked arm 7, seted up the second on the second crooked arm 6 and put the object plane, just first object plane of putting is located the body of first crooked arm 7 with between the curved core structure, the second object plane of putting is located the body of second crooked arm 6 with between the curved core structure, that is to say, crooked application of force direction is mirror symmetry to the application of force effect of assurance effect in crooked regional both sides is balanced, has further guaranteed the stability in the yield region, thereby guarantees yield range and its stability.
That is, the test specimen 5 is placed between the bent core structure and the bent arm.
Furthermore, a first limiting surface perpendicular to the first object placing surface is further formed on the first bending arm 7, and the first object placing surface is connected with the first limiting surface at the first rotating shaft; the second bending arm 6 is further provided with a second limiting surface perpendicular to the second object placing surface, and the second object placing surface is connected with the second limiting surface at the second rotating shaft; when a test sample to be tested is placed on the first object placing surface and the second object placing surface to be bent, the first limiting surface and the second limiting surface abut against each other, and the first object placing surface and the second object placing surface are coplanar. Therefore, the plate surface of the sample 5 is supported in the standby state, and compared with the existing end part supporting force application structure, the yield range can be greatly reduced.
Referring to fig. 5 and 7, the first bending arm 7 and the second bending arm 6 are both right-angled triangle plates or 90-degree sector plates.
Referring to fig. 1 and 4, the bent core structure includes: the guide base 2, the guide rod 42 and the pressure head 41; the guide seat 2 is fixed on the base 1, and a guide hole groove is formed in the guide seat 2; the guide rod 42 is movably embedded in the guide hole groove; the adjustment of pressure and displacement is realized. The pressing head 41 is fixed to a first end of the guide bar 42 and directed toward the first pivot recess 11.
Further, the bending core structure further comprises: a connecting rod, a pressure rod 44, and a spring 43;
the first end of the connecting rod is fixed on the second end of the guide rod 42, the second end of the connecting rod is embedded in the pressure rod 44 in an axially movable manner, and the extending directions of the guide rod 42, the connecting rod and the pressure rod 44 are consistent, so that the coaxiality of force application operation is ensured.
The spring 43 is sleeved outside the connecting rod, and two ends of the spring 43 respectively and correspondingly abut against the second end of the guide rod 42 and the pressure rod 44; the pressure can be adjusted, so that the requirement of various bending pressures can be met.
Wherein, the pressure lever 44 is provided with a connecting structure for connecting a force application device, so as to realize the adjustment of pressure or displacement.
Further, the bent arm pushing structure includes: a first push rod 71, a second push rod 61, and a third push rod 8.
The first push rod 71 is fixed on the first bending arm 7, the second push rod 61 is fixed on the second bending arm 6, and the third push rod 8 abuts against one sides of the first push rod 71 and the second push rod 61 away from the bending core structure; thereby pushing against the bent core structure.
Further, the first push rod 71 and the second push rod 61 are both cylindrical rods; the circumferential surfaces of the first push rod 71 and the second push rod 61 abut against the third push rod 8; wherein the first push rod 71, the second push rod 61, the first rotating shaft 72 and the second rotating shaft 73 are oriented in the same direction. So that the first push rod 71 and the second push rod 61 are stably rotated with respect to the third push rod 8 when pushed, thereby ensuring the stability of the bending process.
One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:
according to the bending resilience testing device provided by the embodiment of the application, the bending part is limited near the rotating shaft through the first bending arm and the second bending arm which rotate coaxially, and the bending area is further limited through the bending core structure pointing to the rotating shaft and the rotating bending arms, so that the yield range is limited. Meanwhile, the bending arm is provided with an object placing surface for supporting the surface of the test sample, and only part of the bending area is vacated during bending, so that the yield range is further limited. Meanwhile, the bending area is limited in the area near the rotating shaft, so that the problem of inconsistent yield range when the bending angle is changed can be avoided, and the relative stability is kept.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the examples, those skilled in the art should understand that the technical solutions of the present invention can be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the scope of the claims of the present invention.
Claims (7)
1. A bend rebound testing device, comprising: the bending mechanism comprises a base, a first bending arm, a second bending arm, a bending core structure and a bending arm pushing structure;
a first rotating shaft groove is formed in the base;
a first rotating shaft is arranged at the first end of the first bending arm and is rotatably embedded in the first rotating shaft groove, a second rotating shaft groove is formed in the first rotating shaft, and the rotating central axis of the second rotating shaft groove is superposed with the rotating central axis of the first rotating shaft groove;
a second rotating shaft is arranged at the first end of the second bending arm and is rotatably embedded in the second rotating shaft groove;
the bent core structure is fixed on the base, and the head end of the bent core structure points to the first rotating shaft groove and can be radially close to or far away from the first rotating shaft groove;
the bent arm pushing structure is abutted against the first bent arm and the second bent arm and can push the first bent arm and the second bent arm to rotate;
the first bending arm is provided with a first object placing surface, the second bending arm is provided with a second object placing surface, the first object placing surface is located between the body of the first bending arm and the bending core structure, and the second object placing surface is located between the body of the second bending arm and the bending core structure.
2. The bending springback test device of claim 1, wherein the first bending arm is further provided with a first limiting surface perpendicular to the first object holding surface, and the first object holding surface is connected with the first limiting surface at the first rotating shaft;
the second bending arm is also provided with a second limiting surface which is vertical to the second object placing surface, and the second object placing surface is connected with the second limiting surface at the second rotating shaft;
when a test sample to be tested is placed on the first object placing surface and the second object placing surface to be bent, the first limiting surface and the second limiting surface abut against each other, and the first object placing surface and the second object placing surface are coplanar.
3. The bending springback test device of claim 2, wherein the first bending arm and the second bending arm are each a right angle triangle or a 90 degree fan.
4. The bend resilience test apparatus of claim 1, wherein the bending core structure comprises: the guide device comprises a guide seat, a guide rod and a pressure head;
the guide seat is fixed on the base and is provided with a guide hole groove;
the guide rod is movably embedded in the guide hole groove;
the pressure head is fixed at the first end of the guide rod and points to the first rotating shaft groove.
5. The bend resilience test apparatus of claim 4, wherein the bend core structure further comprises: a connecting rod, a pressure lever and a spring;
the first end of the connecting rod is fixed on the second end of the guide rod, the second end of the connecting rod is embedded in the pressure rod in an axially movable manner, and the extension directions of the guide rod, the connecting rod and the pressure rod are consistent;
the spring is sleeved outside the connecting rod, and two ends of the spring respectively and correspondingly abut against the second end of the guide rod and the pressure rod one by one;
wherein, the pressure lever is provided with a connecting structure for connecting force application equipment.
6. The device for testing flexural resilience of any one of claims 1 to 5, wherein the flexure arm urging structure includes: a first push rod, a second push rod and a third push rod;
the first push rod is fixed on the first bending arm, the second push rod is fixed on the second bending arm, and the third push rod abuts against one side, far away from the bent core structure, of the first push rod and the second push rod.
7. The device according to claim 6, wherein the first push rod and the second push rod are cylindrical rods;
the circumferential surfaces of the first push rod and the second push rod are abutted against the third push rod;
wherein, the first push rod, the second push rod, the first rotating shaft and the second rotating shaft are in the same direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920760007.1U CN209945899U (en) | 2019-05-24 | 2019-05-24 | Bending resilience testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920760007.1U CN209945899U (en) | 2019-05-24 | 2019-05-24 | Bending resilience testing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209945899U true CN209945899U (en) | 2020-01-14 |
Family
ID=69134064
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920760007.1U Expired - Fee Related CN209945899U (en) | 2019-05-24 | 2019-05-24 | Bending resilience testing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209945899U (en) |
-
2019
- 2019-05-24 CN CN201920760007.1U patent/CN209945899U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200114 |