Clamp for tensile testing machine

Abstract

The utility model discloses a kind of clamps for tensile testing machine, it is related to tensile testing machine technical field, including a pair of oppositely arranged fixed mechanism, each group of fixed mechanism includes: second connecting plate, the central position of second connecting plate is equipped with first through-hole;A pair of clamping components, a pair of clamping components are staggered and arranged on the edge position of the upper and lower sides of second connecting plate, and the clamping component is used to fix bar stock;First connecting plate, first connecting plate is arranged at the end of clamping component located in outside, and threaded hole is formed in first connecting plate;The utility model is fixed by being provided with two groups of clamping components at each end of bar stock, so that bar stock is clamped firmly, the arc-shaped groove of first fixed plate and second fixed plate is rough curved surface, first fixed plate and second fixed plate are made of high-hardness alloy steel, and then prevent data deviation from occurring skidding phenomenon in the process of test.

Description

Technical Field

[0001] This utility model relates to the field of tensile testing machine technology, specifically a fixture for a tensile testing machine. Background Technology

[0002] A tensile testing machine is a precision instrument used to determine the tensile properties of semi-finished and finished products. By applying axial tensile force to the specimen, it observes the elastic deformation, plastic deformation and even fracture behavior of the material during the stress process, thereby obtaining key mechanical properties such as tensile strength, yield strength and elongation of the material.

[0003] In the field of materials science, alloy materials are widely used in key industries such as aerospace and machinery manufacturing due to their excellent comprehensive properties. Their mechanical properties are directly related to product quality and safety; therefore, accurately determining the mechanical properties of alloy materials through tensile testing has become an essential means of controlling material quality.

[0004] However, existing tensile testing machines on the market cannot securely fix round bar specimens with existing clamps. During the tensile test, the specimen is prone to slippage, resulting in large deviations in the test data. This makes it impossible to truly reflect the mechanical properties of the alloy material and seriously affects the accuracy and reliability of the test results. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a fixture for a tensile testing machine, which solves the problem that existing fixtures are difficult to firmly fix round bars, and that the specimens are prone to slippage during tensile testing, resulting in large deviations in test data.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a clamp for a tensile testing machine, comprising a pair of opposing fixing mechanisms, each fixing mechanism comprising:

[0007] The second connecting plate has a first through hole at its center.

[0008] A pair of clamping assemblies are staggered at the upper and lower edges of the second connecting plate, and the clamping assemblies are used to fix the bar stock.

[0009] A first connecting plate is disposed at the end of the clamping assembly located on the outer side, and the first connecting plate has a threaded hole.

[0010] Preferably, each set of the clamping components includes:

[0011] A third connecting plate, one end of which is connected to a second connecting plate, and the first connecting plate is connected to the outer end of the third connecting plate;

[0012] A first fixing plate is detachably mounted on a third connecting plate;

[0013] The second fixing plate is detachably mounted on the third connecting plate;

[0014] Both the first fixing plate and the second fixing plate have arc-shaped grooves on opposite sides, and the arc-shaped grooves are rough curved surfaces.

[0015] Preferably, the third connecting plate has a mounting groove, and the third connecting plate has a second through hole at the position corresponding to the mounting groove. A fourth connecting plate is bolted to the third connecting plate and located in the mounting groove. The first fixing plate is disposed on the fourth connecting plate and passes through the second through hole.

[0016] Preferably, a pair of bosses are provided on both sides of the second fixing plate, and the third connecting plate and the pair of bosses are connected by bolts.

[0017] This utility model provides a fixture for a tensile testing machine, which has the following beneficial effects:

[0018] This invention secures the bar stock by providing two sets of clamping components at each end. The arc grooves of the first and second fixing plates are rough curved surfaces, and the first and second fixing plates are made of high-hardness alloy steel, thereby preventing slippage and data deviation during the test. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0020] Figure 2 This is an exploded view of the clamping assembly of this utility model;

[0021] Figure 3 This is a front perspective three-dimensional structural view of the third connecting plate of this utility model;

[0022] Figure 4 This is a rear-view perspective structural diagram of the third connecting plate of this utility model.

[0023] In the diagram: 1. First connecting plate; 1-1. Threaded hole; 2. Second connecting plate; 2-1. First through hole; 3. Bar stock; 4. Third connecting plate; 4-1. Mounting groove; 4-2. Countersunk hole; 4-3. Second through hole; 5. Fourth connecting plate; 6. First bolt; 7. First nut; 8. Second bolt; 9. Second nut; 10. First fixing plate; 11. Second fixing plate; 12. Boss; 13. Third through hole; 14. Arc groove. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figure 1-4 This utility model provides a technical solution: a clamp for a tensile testing machine, including a pair of oppositely arranged fixing mechanisms, which are arranged on the transmission components on both sides of the tensile testing machine for fixing the two ends of the bar stock;

[0026] Each set of fixed mechanisms includes:

[0027] The second connecting plate 2 has a first through hole 2-1 at its center.

[0028] Specifically, the radius of the first through hole 2-1 is larger than the radius of the bar 3, so that the bar 3 can pass through it;

[0029] A pair of clamping components are staggered at the upper and lower edges of the second connecting plate 2. The clamping components are used to fix the bar stock 3.

[0030] Specifically, a pair of clamping components can fix two points at one end of the bar stock 3, thereby improving the stability during fixing;

[0031] The first connecting plate 1 is disposed at the end of the clamping assembly located on the outer side, and the first connecting plate 1 is provided with a threaded hole 1-1;

[0032] Specifically, the first connecting plate 1 is used to connect with the transmission components of the tensile testing machine, and can be connected and fixed by bolts passing through the threaded holes and then engaging with nuts.

[0033] As one embodiment of this utility model, each set of clamping components includes:

[0034] The third connecting plate 4 has one end connected to the second connecting plate 2, and the first connecting plate 1 is connected to the end of the outer third connecting plate 4.

[0035] For example, such as Figure 1 As shown in the upper second connecting plate 2, if a third connecting plate 4 is connected to the right edge of the upper surface of the second connecting plate 2, and another third connecting plate 4 is connected to the left edge of the lower surface of the second connecting plate 2, the top of the first connecting plate 1 is connected to the upper third connecting plate 4.

[0036] The first fixing plate 10 is detachably mounted on the third connecting plate 4;

[0037] The second fixing plate 11 is detachably mounted on the third connecting plate 4;

[0038] The first fixing plate 10 and the second fixing plate 11 each have an arc-shaped groove 14 on their opposite sides. The arc-shaped groove 14 is a rough curved surface.

[0039] Specifically, after the first fixing plate 10 is installed on the third connecting plate 4, the bar stock 3 is embedded into the arc groove 14, and then the second fixing plate 11 is installed on the third connecting plate 4, so that the first fixing plate 10 and the second fixing plate 11 clamp and fix the bar stock 3.

[0040] As an embodiment of the present utility model, a mounting groove 4-1 is provided on the third connecting plate 4, a second through hole 4-3 is provided on the third connecting plate 4 at the position corresponding to the mounting groove 4-1, a fourth connecting plate 5 is bolted to the third connecting plate 4 and located in the mounting groove 4-1, and a first fixing plate 10 is provided on the fourth connecting plate 5 and is disposed through the second through hole 4-3.

[0041] Specifically, the cross-section of the second through hole 4-3 is smaller than the cross-section of the mounting groove 4-1. Both the third connecting plate 4 and the fourth connecting plate 5 are provided with a pair of countersunk holes 4-2, which are connected. The nut of the first bolt 6 is placed in the countersunk hole 4-2 on the fourth connecting plate 5, and the first nut 7 is placed in the countersunk hole 4-2 on the third connecting plate 4. The fourth connecting plate 5 is installed in the mounting groove 4-1 on the third connecting plate 4 by the first bolt 6 and the first nut 7 placed in the pair of countersunk holes 4-2.

[0042] As an embodiment of the present utility model, a pair of bosses 12 are provided on both sides of the second fixing plate 11, and the third connecting plate 4 and the pair of bosses 12 are connected by bolts.

[0043] Specifically, a pair of bosses 12 and a pair of third through holes 13 are provided on each of the third connecting plates 4. The second fixing plate 11 and the third connecting plate 4 are fixed by the second bolt 8 passing through the third through hole 13 and cooperating with the second nut 9.

[0044] Those skilled in the art should connect all electrical components and their compatible power supplies in this case via wires, and should select appropriate controllers according to actual conditions to meet control requirements. The specific connection and control sequence should refer to the working principle described below, where the electrical connections between the various electrical components are completed in sequence. The detailed connection methods are well-known technologies in the field. The following mainly introduces the working principle and process, and will not describe the electrical control further.

[0045] The working principle and usage process of this utility model are as follows: In use, each first connecting plate 1 is bolted to the transmission component of the tensile testing machine. The two ends of the bar 3 are inserted into the first through hole 2-1 of the second connecting plate 2 and aligned with the position of the arc groove 14 of each first fixing plate 10. After aligning the position of the arc groove 14 of each second fixing plate 11 with the position of the bar 3, the second fixing plate 11 is mounted on the third connecting plate 4 by the second bolt 8 and the second nut 9, so that the first fixing plate 10 and the second fixing plate 11 clamp and fix the bar 3.

[0046] This utility model provides two sets of clamping components at each end of the bar stock 3 for fixing, so that the bar stock 3 is firmly clamped. The arc groove 14 of the first fixing plate 10 and the second fixing plate 11 is a rough curved surface. The first fixing plate 10 and the second fixing plate 11 are made of high hardness alloy steel, thereby preventing slippage during the test and thus preventing data deviation.

[0047] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fixture for a tensile testing machine, characterized in that, Includes a pair of opposing fixing mechanisms, each set of fixing mechanisms including: The second connecting plate (2) has a first through hole (2-1) at its center. A pair of clamping components are staggered at the upper and lower edges of the second connecting plate (2), and the clamping components are used to fix the bar stock (3); A first connecting plate (1) is disposed at the end of the clamping assembly located on the outside, and a threaded hole (1-1) is provided on the first connecting plate (1).

2. The fixture for a tensile testing machine according to claim 1, characterized in that, Each set of clamping components includes: The third connecting plate (4) is connected at one end to the second connecting plate (2), and the first connecting plate (1) is connected to the end of the outer third connecting plate (4). The first fixing plate (10) is detachably mounted on the third connecting plate (4); The second fixing plate (11) is detachably mounted on the third connecting plate (4); The first fixing plate (10) and the second fixing plate (11) each have an arc-shaped groove (14) on their opposite sides, and the arc-shaped groove (14) is a rough curved surface.

3. A fixture for a tensile testing machine according to claim 2, characterized in that, The third connecting plate (4) has an installation groove (4-1) and a second through hole (4-3) corresponding to the installation groove (4-1). A fourth connecting plate (5) is bolted to the third connecting plate (4) and located in the installation groove (4-1). The first fixing plate (10) is set on the fourth connecting plate (5) and passes through the second through hole (4-3).

4. A fixture for a tensile testing machine according to claim 2, characterized in that, The second fixing plate (11) has a pair of bosses (12) on both sides, and the third connecting plate (4) and the pair of bosses (12) are connected by bolts.

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