CN222599364U - Device for testing tensile strength of spline bending part - Google Patents

Abstract

The utility model relates to the field of material tensile testing, in particular to a device for testing tensile strength at a spline bending position, which comprises a spline clamping platform and a clamping base used for connecting a universal material testing machine, wherein the clamping base is hinged with the spline clamping platform, a limiting piece is arranged on the clamping base, the spline clamping platform is provided with a plurality of limiting parts, any one of the limiting parts can be in limiting connection with the limiting piece, the spline clamping platform can clamp and connect a bending spline, the current bending forming angle can be kept when the bending spline is subjected to tensile strength testing by rotating the spline clamping platform, the tensile strength at the bending position of the material can be accurately tested, the accuracy of a testing result is ensured, accurate data support is provided for structural design of a product, and the quality of the product is improved.

Description

Device for testing tensile strength of spline bending part

Technical Field

The utility model relates to the field of tensile testing of materials, in particular to a device for testing tensile strength of a spline bending part.

Background

In the tensile test of the strength of a bending position of a box body made of metal or other materials, a tensile strength test is usually carried out on a test spline in a test mode of stretching a flat plate material or fixing a limited press block for 90-degree stretching.

But the tensile strength of the test spline can only be tested by 90 degrees or 180 degrees due to the fact that the tensile strength of the test spline can not be tested by 90 degrees or 90 degrees due to the fact that the tensile strength of the test spline can not be changed, when the test spline with the bending angle ranging from 90 degrees to 180 degrees is tested, the bending position of the test spline can be deformed, the tensile strength of the bending position of the test spline can not be accurately obtained, and the tensile strength test results of bending positions of a box corner and the like are inaccurate.

Therefore, a technical solution is needed to solve the technical problem that the tensile strength test result of the bending test sample strip is inaccurate at present.

Disclosure of utility model

The utility model aims to provide a device for testing the tensile strength of a spline bending part, aiming at the technical problem that the tensile strength test result of a bending test spline is inaccurate at present.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

The device for testing the tensile strength of the spline bending part comprises a spline clamping platform and a clamping base used for being connected with a universal material testing machine, wherein the clamping base is hinged with the spline clamping platform;

The clamping base is provided with a limiting piece, the spline clamping platform is provided with a plurality of limiting parts, and any one of the limiting parts can be in limiting connection with the limiting piece;

the spline clamping platform can clamp and connect the bending spline.

The device for testing the tensile strength of the spline bending part is characterized in that a spline clamping platform is hinged with a clamping base, the spline clamping platform can rotate around the hinged part, so that the inclination angle of the clamping surface of the spline clamping platform is changed, the existing bending angle can be kept for tensile testing after a bending spline is clamped, a limiting piece is arranged on the clamping base, the clamping base can be fixed on a set angle through the matching of the limiting piece and a limiting part, the inaccuracy of the tensile strength testing result caused by shaking of the spline clamping platform is avoided, when the device is used, the bending part of the bending spline is positioned at the edge of the clamping surface of the spline clamping platform, an upper stretching joint of a universal material testing machine is connected with the bending spline, a lower stretching joint of the universal material testing machine is connected with the clamping base, the bending spline can be accurately tested on the premise that the current bending angle is kept by rotating and adjusting the spline clamping platform, and the tensile strength of the test spline after bending or molding can be accurately measured.

As a preferable scheme of the utility model, the spline clamping platform is provided with a rotating shaft, the clamping base is provided with a hinge part, and the rotating shaft is rotationally connected with the hinge part. The spline clamping platform can rotate around the rotating shaft by arranging the rotating shaft to be connected with the hinge part in a rotating way, so that the clamping angle of the spline clamping platform can be adjusted, and the cylindrical rotating shaft penetrates through two opposite sides of the spline clamping platform, or the rotating shaft is two cylindrical rotating shafts which are oppositely arranged on two sides of the spline clamping platform.

As a preferable scheme of the utility model, the clamping base is provided with a first clamping plate and a second clamping plate, the first clamping plate and the second clamping plate are arranged oppositely, the spline clamping platform is positioned between the first clamping plate and the second clamping plate, and the first clamping plate and the second clamping plate are both in rotary connection with the rotating shaft. Through setting up spline clamping platform between first splint and second splint, make first splint and second splint support spline clamping platform jointly, make spline clamping platform stability better, can bear bigger effort.

As a preferable scheme of the utility model, the limiting piece comprises a limiting bayonet lock, the limiting part comprises through holes penetrating through two opposite sides of the spline clamping platform, the first clamping plate is provided with a first through limiting hole, the second clamping plate is provided with a second through limiting hole, the first limiting hole, the through holes and the second limiting Kong Yici are aligned and communicated, and the limiting bayonet lock is arranged in the first limiting hole, the through holes and the second limiting hole in a penetrating mode. The spline clamping platform is limited by sequentially penetrating through the first limiting hole, the through hole and the second limiting through the limiting bayonet lock, so that stability of the spline clamping platform in the use process is ensured, and accuracy of a test result is ensured.

As a preferable scheme of the utility model, the first limiting hole and the second limiting hole comprise waist-shaped holes, the through hole comprises a first connecting hole and a second connecting hole, the first connecting hole and the second connecting hole can be communicated with the waist-shaped holes, and the first connecting hole and the second connecting hole are arranged along the radial direction of the rotating shaft. The double-row limiting bayonet locks can be inserted into the first connecting holes and the second connecting holes simultaneously, so that the limiting effect on the spline clamping platform is enhanced, and higher firmness and stretching balance are provided for the spline clamping platform.

As a preferable mode of the utility model, the rotating shaft comprises a first rotating shaft and a second rotating shaft, the first rotating shaft is arranged opposite to the second rotating shaft, the first rotating shaft is connected with the first clamping plate in a rotating way, and the second rotating shaft is connected with the second clamping plate in a rotating way. When the spline clamping device is used, the bending position of a bent spline can be arranged on the axis of the rotating shaft, so that the angle of the spline clamping platform can be conveniently adjusted.

As a preferable scheme of the utility model, a plurality of limiting parts are arranged on the spline clamping platform along the rotation direction of the rotation shaft. The spline clamping platform can be fixed under various angles through the arrangement of the limiting parts, so that the spline clamping platform can be adapted to bending splines with various bending angles.

As a preferable scheme of the utility model, the spline clamping platform comprises a rotary base and a sample pressing plate, the sample pressing plate is detachably connected with the rotary base, the spline clamping platform and the rotary base can clamp bending splines, the rotary base is hinged with the clamping base, and the limiting part is arranged on the rotary base. The rotary base table and the sample pressing plate can clamp the bending spline, so that the bending spline is convenient to detach.

As a preferable mode of the utility model, the rotary base is provided with a clamping groove, and the sample pressing plate is adaptively embedded into the clamping groove. And placing the bending spline in the clamping groove, and fixing the sample pressing plate through a bolt, so that the inner walls of the sample pressing plate and the clamping groove are abutted against the bending spline, and the bending spline is fixed on the spline clamping platform.

As a preferable scheme of the utility model, one end of the clamping base far away from the spline clamping platform is provided with a clamping part. The clamping part is used for connecting a universal material testing machine.

In summary, due to the adoption of the technical scheme, the beneficial effects of the utility model are as follows:

1. the device for testing the tensile strength of the spline bending part is characterized in that a spline clamping platform is hinged with a clamping base, the spline clamping platform can rotate around the hinged part, so that the inclination angle of the clamping surface of the spline clamping platform is changed, the existing bending angle can be kept for tensile testing after a bending spline is clamped, a limiting piece is arranged on the clamping base, the clamping base can be fixed on a set angle through the matching of the limiting piece and a limiting part, the inaccuracy of the tensile strength testing result caused by shaking of the spline clamping platform is avoided, when the device is used, the bending part of the bending spline is positioned at the edge of the clamping surface of the spline clamping platform, an upper stretching joint of a universal material testing machine is connected with the bending spline, a lower stretching joint of the universal material testing machine is connected with the clamping base, the bending spline can be accurately tested on the premise that the current bending angle is kept by rotating and adjusting the spline clamping platform, and the tensile strength of the test spline after bending or molding can be accurately measured.

2. The device for testing the tensile strength of the bending part of the spline has the advantages of simple structure, easy manufacture and convenient use, can maintain the current bending forming angle when the bending spline is subjected to the tensile strength test by rotating the spline clamping platform, can accurately test the tensile strength of the bending part of the material, ensures the accuracy of a test result, provides accurate data support for the structural design of a product, improves the quality of the product, and has good economic value and practical value.

Drawings

FIG. 1 is a schematic diagram of an exploded structure of an apparatus for testing tensile strength at spline bending of example 1;

FIG. 2 is a schematic structural diagram of an apparatus for testing tensile strength at spline bending in accordance with example 1;

FIG. 3 is a schematic side view of the apparatus for testing tensile strength at spline bending of example 1;

Fig. 4 is a schematic side view of the rotary base of embodiment 1;

FIG. 5 is a schematic sectional view showing the structure of the device for testing tensile strength at spline bending in accordance with example 1;

fig. 6 is a schematic sectional view showing the structure of the device for testing tensile strength at spline bending in accordance with example 1.

Icon:

The device comprises a 1-rotating base, a 2-clamping base, a 3-limiting piece, a 4-limiting part, a 5-rotating shaft, a 6-hinging part, a 7-first clamping plate, an 8-second clamping plate, a 9-first limiting hole, a 10-second limiting hole, a 11-sample pressing plate, a 12-clamping groove, a 13-clamping part, a 14-bending spline, a 41-first connecting hole and a 42-second connecting hole.

Detailed Description

The present utility model will be described in detail with reference to the accompanying drawings.

The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

Example 1

1-6, A device for testing tensile strength of a spline bending part comprises a spline clamping platform and a clamping base 2 for connecting a universal material testing machine, wherein the clamping base 2 is hinged with the spline clamping platform;

The clamping base 2 is provided with a limiting piece 3, the spline clamping platform is provided with a plurality of limiting parts 4, and any one of the limiting parts 4 can be in limiting connection with the limiting piece 3;

the spline clamping platform is capable of clamping and connecting the bent spline 14.

The spline clamping platform is hinged with the clamping base 2, so that the spline clamping platform can rotate around the hinged position, the inclination angle of the clamping surface of the spline clamping platform is changed, the existing bending angle can be kept for tensile testing after the bending spline 14 is clamped, the limiting piece 3 is arranged on the clamping base 2, the clamping base 2 can be fixed on a given angle through the matching of the limiting piece 3 and the limiting part 4, and inaccurate tensile strength testing results caused by shaking of the spline clamping platform are avoided.

Specifically, the spline clamping platform is composed of a rotating base 1 and a sample pressing plate 11, the sample pressing plate 11 is detachably connected with the rotating base 1 through bolts, the spline clamping platform and the rotating base 1 are respectively abutted against two sides of a bending spline 14 to clamp and fix the bending spline 14, the rotating base 1 is hinged with a clamping base 2, a limiting part 4 is arranged on the rotating base 1, and the rotating base 1 is rotated to change the stress angle of the bending spline 14, so that the bending spline 14 can be subjected to tensile test under the condition of maintaining the current bending state, and more accurate test results can be obtained.

Specifically, the rotary base 1 is provided with a clamping groove 12, the sample pressing plate 11 is adaptively embedded into the clamping groove 12, and the bottom wall of the clamping groove 12 and the sample pressing plate 11 are respectively abutted against two sides of the bending spline 14, so that the sample pressing bar is clamped.

Specifically, the clamping base 2 is provided with the clamping part 13 at one end far away from the spline clamping platform, so that the universal material tester can more conveniently apply stretching force to the bending spline 14.

Specifically, the clamping base 2 is provided with a first clamping plate 7 and a second clamping plate 8, the first clamping plate 7 and the second clamping plate 8 are respectively positioned on two opposite sides of the clamping base 2, the first clamping plate 7 and the second clamping plate 8 are oppositely arranged, the rotary base 1 is arranged between the first clamping plate 7 and the second clamping plate 8, the first clamping plate 7 and the second clamping plate 8 are oppositely provided with hinge holes serving as hinge parts 6, the rotating shaft 5 arranged on the rotary base 1 is rotationally connected with the hinge holes, the rotary base 1 can rotate around the rotating shaft 5, the rotary base 1 can rotate to any angle, and therefore, a spline after bending and forming can be subjected to tensile test on the premise of not changing the current bending form, and the accuracy of a tensile test result is ensured.

Specifically, the rotating shaft 5 is composed of a first rotating shaft and a second rotating shaft, the first rotating shaft 5 and the second rotating shaft 5 are oppositely arranged, the first rotating shaft is in rotating connection with the first clamping plate 7, the second rotating shaft is in rotating connection with the second clamping plate 8, the first clamping plate 7 and the second clamping plate 8 are respectively connected through the two rotating shafts, the space from the first rotating shaft to the second rotating shaft is empty, the bending part of the bending spline 14 can be placed on the axes of the first rotating shaft and the second rotating shaft, and the rotating angle of the bending spline 14 can be controlled more easily.

Specifically, the locating part 3 is spacing bayonet lock, and spacing portion 4 is the through-hole, and first splint 7 is offered and is link up first spacing hole 9, and second splint 8 is offered and is link up second spacing hole 10, and first spacing hole 9, through-hole and second spacing hole 10 align in proper order and communicate, and spacing bayonet lock wears to locate first spacing hole 9, through-hole and second spacing hole 10. The spline clamping platform is limited by sequentially penetrating through the first limiting hole 9, the through hole and the second limiting through the limiting bayonet lock, so that stability of the spline clamping platform in the use process is ensured, and accuracy of a test result is ensured.

Specifically, along the rotation direction of the rotation shaft 5, a plurality of through holes are arranged in the rotation base 1, so that the rotation base 1 can be limited in various angles, and the rotation base 1 can be used for tensile testing of bending splines 14 with different bending degrees.

Specifically, the first limiting hole 9 and the second limiting hole 10 comprise waist-shaped holes, the through hole comprises a first connecting hole 41 and a second connecting hole 42, the first connecting hole 41 and the second connecting hole 42 can be communicated with the waist-shaped holes, and the first connecting hole 41 and the second connecting hole 42 are arranged in a staggered mode along the radial direction of the rotating shaft 5. The adjacent first and second connection holes 41 and 42 are different by 10 degrees with respect to the rotation axis as a center.

When the device for testing the tensile strength of the bending part of the spline is used, the bending part of the bending spline 14 is located at the edge of the clamping surface of the spline clamping platform, the upper stretching joint of the universal material testing machine is connected with the bending spline 14, the lower stretching joint of the universal material testing machine is connected with the clamping base 2, the bending spline 14 is subjected to stretching test on the premise of keeping the current bending angle by rotating and adjusting the spline clamping platform, and the tensile strength of the bending part of the material can be accurately tested, so that the tensile strength of the bent or molded test spline can also be accurately measured.

Example 2

The device for testing tensile strength at spline bending point of this embodiment has the same structure as that of embodiment 1, but the rotating base 1 is provided with a row of through holes along the radial direction of the rotating shaft 5, unlike embodiment 1.

Specifically, the first limiting hole 9 and the second limiting hole 10 are circular holes.

The bolt sequentially passes through the first limiting hole 9, the through hole and the second limiting hole 10 to limit the rotating base table 1;

Example 3

The device for testing tensile strength at bending position of spline in this embodiment has the same structure as that in embodiment 1, except that the limiting portion 4 is a limiting protrusion or a limiting groove, which is different from embodiment 1.

Specifically, spacing protruding can with spacing bolt butt, or, spacing bolt can the adaptation insert spacing recess in.

Through the cooperation of the limiting bolt and the limiting protrusion or the limiting groove, the limiting of the rotary base table 1 is realized.

Example 4

The device for testing tensile strength at spline bending point of this embodiment is substantially the same as embodiment 1 in structure, but is different from embodiment 1 in that the first connecting holes 41 and the second connecting holes 42 are arranged in a radial direction of the rotation shaft 5.

Specifically, about the rotation axis, the adjacent first connecting holes 41 are different by 10 degrees, and the adjacent second connecting holes 42 are different by 10 degrees.

The limiting bayonet locks are inserted simultaneously through the first connecting holes 41 and the second connecting holes 42, so that the limiting effect on the spline clamping platform is enhanced, and higher firmness and stretching balance are provided for the spline clamping platform.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.

Claims (10)

1. The device for testing the tensile strength of the spline bending part is characterized by comprising a spline clamping platform and a clamping base (2) for connecting a universal material testing machine, wherein the clamping base (2) is hinged with the spline clamping platform;

The clamping base (2) is provided with a limiting piece (3), the spline clamping platform is provided with a plurality of limiting parts (4), and any one of the limiting parts (4) can be in limiting connection with the limiting piece (3);

The spline clamping platform can clamp and connect the bending spline (14).

2. Device for testing the tensile strength of spline bending places according to claim 1, characterized in that the spline clamping platform is provided with a rotation shaft (5), the clamping base (2) is provided with a hinge part (6), and the rotation shaft (5) is rotatably connected with the hinge part (6).

3. A device for testing the tensile strength of a spline bending place according to claim 2, characterized in that the clamping base (2) is provided with a first clamping plate (7) and a second clamping plate (8), the first clamping plate (7) and the second clamping plate (8) are oppositely arranged, the spline clamping platform is positioned between the first clamping plate (7) and the second clamping plate (8), and the first clamping plate (7) and the second clamping plate (8) are both in rotary connection with the rotating shaft (5).

4. A device for testing tensile strength at bending positions of splines according to claim 3, characterized in that the limiting piece (3) comprises a limiting bayonet, the limiting part (4) comprises a through hole penetrating through two opposite sides of the spline clamping platform, the first clamping plate (7) is provided with a first through limiting hole (9), the second clamping plate (8) is provided with a second through limiting hole (10), the first limiting hole (9), the through hole and the second limiting hole (10) are sequentially aligned and communicated, and the limiting bayonet is penetrated in the first limiting hole (9), the through hole and the second limiting hole (10).

5. The device for testing the tensile strength of the spline bending place according to claim 4, wherein the first limiting hole (9) and the second limiting hole (10) comprise waist-shaped holes, the through holes comprise a first connecting hole (41) and a second connecting hole (42), the first connecting hole (41) and the second connecting hole (42) can be communicated with the waist-shaped holes, and the first connecting hole (41) and the second connecting hole (42) are arranged along the radial direction of the rotating shaft (5).

6. A device for testing the tensile strength of a spline bending place according to claim 3, characterized in that the rotating shaft (5) comprises a first rotating shaft and a second rotating shaft, the first rotating shaft is arranged opposite to the second rotating shaft, the first rotating shaft is rotatably connected with the first clamping plate (7), and the second rotating shaft is rotatably connected with the second clamping plate (8).

7. A device for testing the tensile strength of a spline bending place according to claim 2, characterized in that a plurality of the limit parts (4) are arranged on the spline clamping platform in a direction of rotation of the rotating shaft (5).

8. Device for testing the tensile strength of a spline bending place according to any one of claims 1-7, characterized in that the spline clamping platform comprises a rotary base (1) and a sample pressing plate (11), the sample pressing plate (11) is detachably connected with the rotary base (1), the spline clamping platform and the rotary base (1) can clamp a bending spline (14), the rotary base (1) is hinged with the clamping base (2), and the limiting part (4) is arranged on the rotary base (1).

9. Device for testing the tensile strength of spline bending places according to claim 8, characterized in that the rotating base (1) is provided with a clamping groove (12), the sample pressure plate (11) being adapted to be embedded in the clamping groove (12).

10. A device for testing the tensile strength of a spline bending place according to claim 2, characterized in that the clamping base (2) is provided with a clamping part (13) at the end remote from the spline clamping platform.