A magnesium alloy sample clamping tool

Abstract

This utility model discloses a magnesium alloy sample clamping fixture, including a mounting base. Two steel rings are coaxially mounted on the front of the mounting base and fixed together by multiple connecting rods. One steel ring near the mounting base is connected to the mounting base via multiple connecting plates. Multiple swing arms are circumferentially mounted on each of the two steel rings. The outer sides of two corresponding upper and lower swing arms are hinged together by connecting rods, and the inner sides of two corresponding upper and lower swing arms are hinged together by clamping plates. An extension rod is connected to the end of the connecting rod near the mounting base, and protrusions are provided on both sides of the end of the extension rod. A cylinder is mounted at the center of the mounting base. The cylinder shaft extends towards the steel rings and is connected to a movable plate. Multiple drive plates are circumferentially mounted on the movable plate. A first opening groove is provided at the outer end of each drive plate, and a waist hole is provided on the side of each drive plate, penetrating the first opening groove. The protrusions slide within the waist hole. This magnesium alloy sample clamping fixture can stably clamp long, strip-shaped magnesium alloy samples.

Description

Technical Field

[0001] This utility model relates to the field of magnesium-aluminum alloys, specifically to a magnesium alloy sample clamping fixture. Background Technology

[0002] Magnesium alloy samples are frequently used in laboratory tests to examine their various mechanical properties and machinability. When transferring or processing magnesium alloy samples, clamping fixtures are necessary.

[0003] A magnesium alloy sample clamping tool, as described in CN221416275U, includes a base and a sample stage mounted on the base via a support frame. The upper end of the support frame extends through the sample stage and has a threaded hole. A threaded rod is threaded into the threaded hole. The threaded rod extends radially parallel to the sample stage. A clamping plate is located at the inner end of the threaded rod, and a vertical groove is located on the outer side of the clamping plate. A slider is located within the vertical groove, and a bearing fitted onto the inner end of the threaded rod is located on the outer side of the slider. A rotating handle is located at the outer end of the threaded rod. A through hole is located in the middle of the sample stage, and a bearing platform coaxial with the through hole is located within the through hole. A cylinder connected to the bearing platform is mounted on the base.

[0004] However, this magnesium alloy sample clamping tool can no longer meet the existing clamping requirements. For example, when clamping long strip-shaped magnesium alloy samples, the clamping area is insufficient, which leads to poor stability. Utility Model Content

[0005] The purpose of this invention is to provide a magnesium alloy sample clamping fixture that can stably clamp long strip-shaped magnesium alloy samples.

[0006] To achieve the above objectives, this utility model provides a magnesium alloy sample clamping fixture, which includes a mounting base. Two steel rings are coaxially arranged at the front of the mounting base and are fixedly connected by multiple connecting rods. The steel ring near one end of the mounting base is connected to the mounting base by multiple connecting plates. Multiple swing arms are arranged circumferentially on both steel rings. The swing arms on the two steel rings are arranged parallel to each other vertically. The outer sides of two vertically corresponding swing arms are hinged together by connecting rods, and the inner sides of two vertically corresponding swing arms are hinged together by clamping plates. An extension rod is connected to one end of the connecting rod near the mounting base. Protrusions are provided on both sides of the end of the extension rod. A cylinder is installed at the center of the mounting base. The cylinder shaft extends toward the steel rings and is connected to a movable plate. Multiple drive plates are arranged circumferentially on the movable plate. A first opening groove is provided at the outer end of the drive plate. A waist hole is provided on the side of the drive plate through the first opening groove, and the protrusions slide in the waist hole.

[0007] Preferably, the steel ring is provided with a plurality of rotating shafts along the circumference; the middle part of the swing arm is provided with a rotating hole that rotatably engages with the rotating shafts.

[0008] Preferably, the outer end of the swing arm is provided with a second opening groove, and the end of the connecting rod is inserted into the second opening groove and is provided with a first pin that is rotatably connected to the swing arm.

[0009] Preferably, the outer sides of both ends of the clamping plate are provided with protruding plates, the inner end of the swing arm is provided with a third opening groove, and the end of the protruding plate is inserted into the third opening groove and is provided with a second pin that is rotatably connected to the swing arm.

[0010] Preferably, the end of the extension rod extends inward at an angle of 110-150° with the connecting rod.

[0011] Preferably, the mounting base is provided with a plurality of mounting holes.

[0012] Preferably, the inner side of the clamping plate is provided with an arc groove.

[0013] According to the above technical solution, this utility model provides a magnesium alloy sample clamping fixture, which includes a mounting base. Two steel rings are coaxially arranged at the front of the mounting base and are fixedly connected by multiple connecting rods. The steel ring near one end of the mounting base is connected to the mounting base by multiple connecting plates. Multiple swing arms are arranged circumferentially on both steel rings. The swing arms on the two steel rings are arranged in parallel and corresponding vertically. The outer sides of two vertically corresponding swing arms are hinged together by connecting rods, and the inner sides of two vertically corresponding swing arms are hinged together by clamping plates. An extension rod is connected to one end of the connecting rod near the mounting base. Protrusions are provided on both sides of the end of the extension rod. A cylinder is installed at the center of the mounting base. The cylinder shaft extends toward the steel ring and is connected to a movable plate. Multiple drive plates are arranged circumferentially on the movable plate. A first opening groove is provided at the outer end of the drive plate. A waist hole is provided on the side of the drive plate through the first opening groove. The protrusions slide in the waist hole.

[0014] The usage and beneficial effects of this magnesium alloy sample clamping fixture are as follows: The upper and lower swing arms, along with the connecting rods and clamping plates, form a parallel four-bar linkage structure. This clamping fixture has multiple parallel four-bar linkages circumferentially. A cylinder pushes the movable plate axially, causing the surrounding drive plates to move axially, which in turn pushes the extension rods. This, in turn, causes the swing arms to swing, bringing the clamping plates closer together or further apart, thus creating a clamping or releasing state. The clamping plates move synchronously. When the swing arms swing, the radial distance between the connecting rods changes. To overcome this lateral change, a lateral sliding structure is provided between the protruding post and the waist hole to overcome the lateral displacement of the extension rods. This magnesium alloy sample clamping fixture can stably clamp long, strip-shaped magnesium alloy samples.

[0015] Other features and advantages of this invention will be described in detail in the following detailed description section. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the following detailed description to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0017] Figure 1 This is a schematic diagram of the overall structure of a preferred embodiment of a magnesium alloy sample clamping fixture.

[0018] Figure 2 This is a front view schematic diagram of a preferred embodiment of a magnesium alloy sample clamping fixture;

[0019] Figure 3 yes Figure 2 A schematic diagram of the AA cross-sectional structure;

[0020] Figure 4 yes Figure 1 A magnified schematic diagram of a portion of region B.

[0021] Explanation of reference numerals in the attached figures

[0022] 1-Steel ring; 2-Swing arm; 3-Connecting rod; 4-Clamping plate; 5-Extension rod; 6-Moving plate; 7-Mounting seat; 8-Cylinder; 9-First pin; 10-Drive plate; 11-Waist hole; 12-Protruding column; 13-Mounting hole; 14-Protruding plate; 15-Second pin; 16-Rotating shaft; 17-Connecting plate; 18-Connecting rod. Detailed Implementation

[0023] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.

[0024] In this utility model, unless otherwise stated, directional terms such as "up, down, left, right, front, back, inside, outside" in the terminology only represent the orientation of the term in its conventional use or are common terms understood by those skilled in the art, and should not be regarded as a limitation on the term.

[0025] See Figure 1-4 The magnesium alloy sample clamping fixture shown includes a mounting base 7. Two steel rings 1 are coaxially arranged at the front of the mounting base 7, and the two steel rings 1 are fixed together by multiple connecting rods 18. One end of the steel ring 1 near the mounting base 7 is connected to the mounting base 7 by multiple connecting plates 17. Multiple swing arms 2 are arranged circumferentially on each of the two steel rings 1. The swing arms 2 on the two steel rings 1 are arranged parallel to each other, one vertically and one horizontally. The outer sides of two vertically corresponding swing arms 2 are hinged together by connecting rods 3. 2. The inner side is hinged by a clamping plate 4. The end of the connecting rod 3 near the mounting base 7 is connected to an extension rod 5. The ends of the extension rod 5 are provided with protruding posts 12 on both sides. The center of the mounting base 7 is equipped with a cylinder 8. The cylinder shaft of the cylinder 8 extends toward the steel ring 1 and is connected to a movable plate 6. The movable plate 6 is provided with a plurality of drive plates 10 along the circumference. The outer end of the drive plate 10 is provided with a first opening groove. The side of the drive plate 10 is provided with a waist hole 11 that passes through the first opening groove. The protruding post 12 slides in the waist hole 11.

[0026] Through the implementation of the above technical solution, since the upper and lower swing arms 2, the connecting rods 3, and the clamping plates 4 form a parallel four-bar linkage 3 structure, the clamping fixture has multiple parallel four-bar linkage 3 structures in its circumference. The cylinder 8 pushes the movable plate 6 to move axially, which in turn drives the surrounding drive plate 10 to move axially, pushing the extension rod 5 to move. Thus, under the push of the connecting rods 3, the swing arms 2 swing, causing the distance between the multiple clamping plates 4 to move closer or further apart, forming a clamping or releasing state, with the multiple clamping plates 4 moving synchronously. When the swing arms 2 swing, the radial distance between the connecting rods 3 changes. To overcome this lateral change, a lateral sliding structure is provided between the protruding post 12 and the waist hole 11 to overcome the lateral displacement change of the extension rod 5. This magnesium alloy sample clamping fixture can stably clamp long strip-shaped magnesium alloy samples.

[0027] In this embodiment, the steel ring 1 is provided with a plurality of rotating shafts 16 along its circumference; the middle part of the swing arm 2 is provided with a rotating hole that rotatably engages with the rotating shafts 16. With this arrangement, the rotating shafts 16 are arranged parallel to the tangential direction of the steel ring 1, so that the swing arm 2 can swing in the radial section.

[0028] In this embodiment, the outer end of the swing arm 2 is provided with a second opening groove, and the end of the connecting rod 3 is inserted into the second opening groove and is provided with a first pin 9 that is rotatably connected to the swing arm 2. This arrangement provides a hinged connection between the swing arm 2 and the connecting rod 3.

[0029] In this embodiment, the outer sides of both ends of the clamping plate 4 are provided with protruding plates 14, and the inner end of the swing arm 2 is provided with a third opening groove. The end of the protruding plate 14 is inserted into the third opening groove and is provided with a second pin 15 that is rotatably connected to the swing arm 2. This arrangement provides a hinged connection between the clamping plate 4 and the swing arm 2.

[0030] In this embodiment, the end of the extension rod 5 extends inward at an angle of 110-150° with the connecting rod 3. This arrangement causes the end near the mounting base 7 to be in a retracted state, reducing the extension distance of the outermost end of the drive plate 10. The connecting plate 17 also extends in a retracted state.

[0031] In this embodiment, the mounting base 7 is provided with a plurality of mounting holes 13. The mounting holes 13 allow for connection to the tooling table using bolts, or to the end of the robotic arm.

[0032] In this embodiment, the inner side of the clamping plate 4 is provided with an arc groove. The inner side of the clamping plate 4 can be a flat surface or an arc groove. When the clamping surface is a flat surface, a flat clamping plate 4 can be used, and when the clamping surface is an arc surface, a clamping plate 4 with an arc groove can be used.

[0033] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the protection scope of the present invention.

[0034] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable way without contradiction. In order to avoid unnecessary repetition, this utility model will not describe the various possible combinations separately.

[0035] Furthermore, various different embodiments of this utility model can be combined in any way, as long as they do not violate the spirit of this utility model, they should also be regarded as the content disclosed by this utility model.

Claims

1. A magnesium alloy sample clamping fixture, characterized in that, Includes a mounting base (7), with two steel rings (1) coaxially arranged at the front of the mounting base (7), the two steel rings (1) being fixedly connected by multiple connecting rods (18), and the steel ring (1) near one end of the mounting base (7) being connected to the mounting base (7) by multiple connecting plates (17); Multiple swing arms (2) are provided on both steel rings (1) along the circumference. The swing arms (2) on the two steel rings (1) are arranged in parallel with each other, one above the other. The outer sides of the two swing arms (2) that are corresponding to each other are hinged together by a connecting rod (3), and the inner sides of the two swing arms (2) that are corresponding to each other are hinged together by a clamping plate (4). An extension rod (5) is connected to one end of the connecting rod (3) near the mounting base (7). Protrusions (12) are provided on both sides of the end of the extension rod (5). A cylinder (8) is installed at the center of the mounting base (7). The cylinder shaft of the cylinder (8) extends toward the steel ring (1) and is connected to a movable plate (6). The movable plate (6) is provided with a plurality of drive plates (10) along the circumference. The outer end of the drive plate (10) is provided with a first opening groove. The side of the drive plate (10) is provided with a waist hole (11) that passes through the first opening groove. The protrusion (12) slides in the waist hole (11).

2. The magnesium alloy sample clamping fixture according to claim 1, characterized in that, The steel ring (1) is provided with multiple rotating shafts (16) along the circumference; The middle part of the swing arm (2) is provided with a rotating hole that rotatably engages with the rotating shaft (16).

3. The magnesium alloy sample clamping fixture according to claim 1, characterized in that, The outer end of the swing arm (2) is provided with a second opening groove, and the end of the connecting rod (3) is inserted into the second opening groove and is provided with a first pin (9) that is rotatably connected to the swing arm (2).

4. The magnesium alloy sample clamping fixture according to claim 1, characterized in that, The outer sides of both ends of the clamping plate (4) are provided with protruding plates (14), the inner end of the swing arm (2) is provided with a third opening groove, the end of the protruding plate (14) is inserted into the third opening groove and is provided with a second pin (15) rotatably connected to the swing arm (2).

5. The magnesium alloy sample clamping fixture according to claim 1, characterized in that, The end of the extension rod (5) extends inward at an angle, forming an angle of 110-150° with the connecting rod (3).

6. The magnesium alloy sample clamping fixture according to claim 1, characterized in that, The mounting base (7) is provided with multiple mounting holes (13).

7. The magnesium alloy sample clamping fixture according to claim 1, characterized in that, The inner side of the clamp (4) is provided with an arc groove.

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