Yield experiment auxiliary clamping tool

Abstract

The utility model discloses yield experiment auxiliary clamping frock, its characterized in that, including: the fixed base for supporting the broken workpiece, the fixed base has at least one support station, and the support station makes the broken workpiece part overhang, at least one lateral ejector rod of the broken workpiece is clamped from both sides to be arranged in the both ends of fixed base, the vertical pressure bar of the broken workpiece one side is pressed down to be arranged on the upper portion of fixed base. One side, through lateral ejector rod from both ends synchronous top tight sample, combine vertical ejector rod unilateral down pressure, cooperate with the realization of multiple point fixation of profiling groove, ensure that sample is not loose, on the other side, the support station of suspension type and the flange structure of unilateral facilitate operating personnel to implement measurement to workpiece from the other side.

Description

Technical Field

[0001] This utility model relates to the field of chassis connecting rod mechanical testing, and in particular to an auxiliary clamping fixture for yield testing. Background Technology

[0002] After the chassis metal parts are sampled, tensile tests on the metal materials need to be conducted according to national standards to evaluate the mechanical properties of the parts. After the specimen breaks due to tensile load during the test, parameters such as gauge length and fracture diameter need to be measured to calculate key indicators such as elongation and reduction of area.

[0003] Currently, in the laboratory, broken samples are fixed by manual assembly or simple bow-shaped clamps. Since the two ends of the broken sample are prone to slippage or tilting due to incomplete constraint, the measurement reference is offset. Therefore, the position of the clamp needs to be adjusted many times to align with the sample, which is inefficient and has poor repeatability. In particular, it is difficult to complete the test fixation and measurement work at the same time when there is only one experimental personnel. Utility Model Content

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A yield test auxiliary clamping fixture includes: a fixed seat for supporting a fractured workpiece, the fixed seat having at least one support platform, the support platform suspending part of the fractured workpiece; at least one lateral push rod disposed at both ends of the fixed seat to clamp the fractured workpiece from both sides; and a vertical pressure rod disposed on the upper part of the fixed seat to press one side of the fractured workpiece downward.

[0006] Furthermore, the support platform is located at the first end and the second end of the fixed seat respectively, and the lateral push rod passes through the first end and the second end and is inserted into the fixed seat respectively.

[0007] Furthermore, a flange extending toward the first end is provided at the second end, and a vertical pressure bar for vertically pressing the broken workpiece is provided on the flange.

[0008] Furthermore, the vertical pressure bar is a set screw screwed onto the litigation flange.

[0009] Furthermore, the flange is provided with at least one mounting hole, through which the vertical pressure rod is fixed.

[0010] Furthermore, a damping structure is arranged between the lateral push rod and the first end and / or the second end.

[0011] Furthermore, a handle is provided at the outer end of the lateral push rod.

[0012] Furthermore, the support platform is provided with a contour groove that matches the outer contour surface of the fractured workpiece.

[0013] The beneficial effects of this utility model are as follows:

[0014] The yield test auxiliary clamping fixture provided by this utility model, on the one hand, uses lateral push rods to simultaneously press the sample from both ends, combined with vertical push rods pressing down from one side, and uses contour grooves to achieve multi-point fixation to ensure that the sample does not loosen; on the other hand, the suspended support platform and the single-sided flange structure make it convenient for the operator to measure the workpiece from the other side. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0016] Figure 1 This is a schematic diagram of the structure of this utility model. Figure 1 .

[0017] Figure 2 This is a schematic diagram of the structure of this utility model. Figure 2 .

[0018] Figure 3 This is a schematic diagram of the structure of this utility model. Figure 3 . Detailed Implementation

[0019] In the description of this utility model, it should be noted that the terms "upper", "lower", "left", "right", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. The above description is for the purpose of simplifying the description of this utility model and does not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this utility model.

[0020] Unless otherwise specified, the singular forms “a,” “the,” and “the” used in this specification include the plural forms. The terms “comprising,” “including,” and “containing” used in this specification indicate the presence of the claimed feature but do not exclude the presence of one or more other features. The term “and / or” used in this specification includes any and all combinations of one or more of the relevant listed items.

[0021] When a component is described in the specification as being "on", "fixed" to, "connected" to, or "joined" to another component, the component may be directly located on, fixed to, connected to, joined to, or in contact with the other component, or there may be an intermediate component present.

[0022] It is understood that although the terms "first," "second," etc., may be used herein to describe different elements, these elements should not be limited by these terms. These terms are merely used to distinguish one element from another. Therefore, a first element may be referred to as a second element without departing from the teachings of this application.

[0023] Exemplary embodiments of this application will now be described with reference to the accompanying drawings. However, it should be understood that this application can be presented in many different ways and is not limited to the embodiments described below. It should also be understood that the embodiments disclosed herein can be combined in various ways to provide further additional embodiments. Throughout the drawings, the same reference numerals denote the same or functionally identical elements.

[0024] Figures 1 to 3 This yield test auxiliary clamping fixture is shown from various angles. The fixed base 20 has support platforms 29a and 29b for supporting the fractured workpiece 10 after the test. Support platform 29a is located inside the first end 21 of the fixed base 20, while support platform 29b is located inside the second end 22. Support platforms 29a and 29b are not connected to each other, so that the fractured workpiece 10 is partially suspended in the fixed base 20. A lateral push rod 27a passes through from the outside of the first end 21 and presses against the end 11 of the fractured workpiece 10. Another lateral push rod 27b passes through from the second end 22 and presses against the other end 11 of the fractured workpiece 10, thus clamping and fixing the fractured workpiece 10 from both sides. A flange 23 is provided on the second end 22, extending towards the first end 21. A vertical push rod 26 is arranged on the flange 23, pressing against one end of the fractured workpiece 10 from above and below. The flange 23 is provided on one side, which facilitates measurement of the fractured workpiece 10 from the other end. Furthermore, contour grooves 29c similar to the outer contour surface of the fractured workpiece 10 are provided on the support platforms 29a and 29b, so as to prevent the fractured workpiece 10 from sliding and rolling at will when supporting it.

[0025] In a preferred embodiment, at least one mounting hole 24 is provided on the flange 23 to accommodate workpieces 10 of different sizes. The vertical pressure bar 26 is a set screw screwed into the mounting hole 24, thereby pressing the workpiece 10 downward.

[0026] In a preferred embodiment, the outer ends of the lateral push rods 27a and 27b are each provided with a handle 28 for easy operation.

[0027] In a preferred embodiment, the lateral push rod 27a and the first end 21, and the lateral push rod 27b and the second end 22 are damped, specifically, they can be damping friction plates arranged between the two elements, to prevent the lateral push rods 27a and 27b from loosening after being tightened.

[0028] In use, the workpiece 10, which has broken after the test, is placed in the contour groove 29c. First, the handles 28 at both ends are operated to initially clamp the workpiece 10 using the lateral push rods 27a and 27b. Then, the vertical push rod 26 is operated to press and fix one end of the workpiece 10. Finally, the lateral push rod 27a at the first end 21 is operated to fully clamp the workpiece 10. Before the test, a gauge length is drawn on the workpiece 10. After the test, the workpiece is fixed using an auxiliary clamping fixture. The gauge length and diameter after fracture are measured. Finally, the yield strength, tensile strength, elongation, and shrinkage rate of the workpiece 10 are calculated based on the data.

Claims

1. A clamping fixture for yield testing, characterized in that, include: A mounting base for supporting a broken workpiece, the mounting base having at least one support platform, the support platform suspending part of the broken workpiece in the air. At least one lateral push rod is provided at both ends of the fixed base to clamp the broken workpiece from both sides; a vertical pressure rod is provided on the upper part of the fixed base to press one side of the broken workpiece downward.

2. The yield test auxiliary clamping fixture as described in claim 1, characterized in that, The support platform is located at the first end and the second end of the fixed seat respectively, and the lateral push rod passes through the first end and the second end and is inserted into the fixed seat respectively.

3. The yield test auxiliary clamping fixture as described in claim 2, characterized in that, A flange extending toward the first end is provided at the second end, and a vertical pressure bar is provided on the flange for vertically pressing the broken workpiece.

4. The yield test auxiliary clamping fixture as described in claim 3, characterized in that, The vertical pressure bar is a set screw screwed onto the litigation flange.

5. The yield test auxiliary clamping fixture as described in claim 3, characterized in that, The flange is also provided with at least one mounting hole, through which the vertical pressure rod is fixed.

6. The yield test auxiliary clamping fixture as described in claim 2, characterized in that, A damping structure is arranged between the lateral push rod and the first end and / or the second end.

7. The yield test auxiliary clamping fixture as described in claim 6, characterized in that, The outer end of the lateral push rod is also provided with a handle.

8. The yield test auxiliary clamping fixture as described in claim 1 or 2, characterized in that, The support platform is provided with a contour groove that matches the outer contour surface of the fractured workpiece.

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