CN207797933U - A device for measuring lateral expansion of Charpy impact specimens - Google Patents

Abstract

The utility model is related to a kind of devices for measuring Charpy bar side swell increment, including fixed seat, measurement jacking block is fixed in the fixed seat, it is movably connected with amesdial pedestal on the measurement jacking block, it is removably connected with amesdial on the amesdial pedestal, described one end for measuring jacking block has addendum cone structure, the gauge head of the addendum cone structure and amesdial is located at the same side, the device for measuring Charpy bar side swell increment also has alignment block, for ensuring that the gauge head of the addendum cone structure and amesdial is located at same vertical plane, the device of the utility model is easy to operate, measurement result is accurate, it is moved easily.

Description

A device for measuring lateral expansion of Charpy impact specimens

technical field

The utility model relates to the technical field of solid deformation measurement devices, in particular to a device for measuring side expansion of Charpy impact samples

Background technique

In the Charpy impact test, the side expansion value of the impact sample is an important indicator. The usual measurement method is to measure the expansion value of each side of any half of the fractured sample relative to the plane determined by the undeformed part of the sample, and take the larger value measured by each half of the sample and sum to obtain the result, usually with Vernier calipers are used for measurement. This measurement method is not easy to determine the undeformed part of the sample, with low accuracy and low work efficiency. The impact sample lateral expansion measurement device invented in patent 201410113470.9 is mainly aimed at the problem of direct measurement of the radiation impact sample lateral expansion, and this function cannot be applied to laboratories that do not conduct radiation impact sample testing. Patent 201510037281.2 is a lateral expansion value measurement system based on projection and digital image processing. The system includes an object stage, a parallel light source, an industrial camera and a computer. When using this system, an independent operating table is required, which is inconvenient to move, and an industrial camera, The cost of expensive electronic products such as computers is high, and the system operators need professional training due to the high degree of automation of the system.

Utility model content

The purpose of the utility model is to overcome the shortcomings of the above-mentioned prior art and provide a device for measuring the side expansion of Charpy impact samples, which is very convenient to operate and use.

In order to achieve the above object, the utility model adopts the following technical solutions:

A device for measuring the side expansion of a Charpy impact sample, comprising a fixed seat, a measuring top block is fixed on the fixed seat, and a dial gauge base is movably connected to the measuring top block, and the dial gauge A dial gauge is detachably connected to the submeter base, and one end of the measuring top block has a top cone structure, and the top cone structure is located on the same side as the probe of the dial gauge, and the Charpy impact sample side is measured The expansion device also has an alignment block, which is used to ensure that the top cone structure and the measuring head of the dial indicator are located on the same vertical plane.

Further, the base of the dial gauge is a U-shaped structure, including a dial gauge fixing plate and support plates located on both sides of the dial gauge fixing plate, the support plate has a threaded through hole, and the threaded through hole runs through There is a first fastening bolt, and the dial indicator base is fixed on the measuring top block through the first fastening bolt.

Further, the dial gauge is fixed on the dial gauge fixing plate through the second fastening bolt.

Further, the alignment block is an L-shaped structure.

Further, the bottom surface of the fixing seat has a rectangular groove, and a measuring top block is fixed on the bottom surface of the rectangular groove by a third fastening bolt.

Further, the depth of the rectangular groove is greater than the thickness of the bolt cap of the third fastening bolt.

The beneficial effects of the utility model:

1. In the measuring device of the present invention, the base of the dial indicator can move on the measuring top block, which facilitates the installation and adjustment of the dial indicator by using the alignment block.

2. In the measuring device of the present invention, the base of the dial gauge is detachably connected with the dial gauge, which facilitates the replacement of the dial gauge, and is applicable to other types of dial gauges.

3. The measuring device of the present invention is light in weight and small in size, and can be moved at any time according to the needs of the test items, which can conveniently and quickly measure the lateral expansion of Charpy impact samples, and improve test efficiency and numerical accuracy.

Description of drawings

The accompanying drawings constituting a part of the present application are used to provide further understanding of the present application, and the schematic embodiments and descriptions of the present application are used to explain the present application and not to limit the present application.

Fig. 1 is a schematic diagram of the front view of the overall structure of the utility model;

Fig. 2 is a schematic top view of the overall structure of the utility model;

Fig. 3 is a three-dimensional schematic diagram of the alignment block of the present invention;

Among them, 1. fixed seat, 11. rectangular groove, 2. measuring top block, 3. dial gauge base, 31. dial gauge fixing plate, 32. support plate, 4. dial gauge, 41. probe, 5. Alignment block, 6. First fastening bolt, 7. Third fastening bolt.

Detailed ways

It should be pointed out that the following detailed description is exemplary and intended to provide further explanation to the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

It should be noted that the terminology used here is only for describing specific implementations, and is not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprising" and/or "comprising" are used in this specification, they mean There are features, steps, operations, means, components and/or combinations thereof.

As introduced in the background technology, the existing methods for measuring the lateral expansion of Charpy impact specimens are complicated to operate and have low accuracy. In view of the above problems, this application proposes a method for measuring the lateral expansion of Charpy impact specimens device.

In a typical implementation of the present application, as shown in Figure 1-2, a device for measuring the lateral expansion of a Charpy impact sample includes a fixing base 1 on which a measuring top block 2 is fixed. , a dial gauge base 3 is movably connected to the measuring top block, a dial gauge 4 is detachably connected to the dial gauge base, and one end of the measuring top block has a top cone structure 21, the The top cone structure is located on the same side as the probe 41 of the dial gauge, and the device for measuring the side expansion of the Charpy impact sample also has an alignment block 5 for ensuring that the top cone structure is aligned with the probe of the dial gauge. on the same vertical plane.

The dial indicator base 3 is a U-shaped structure, including a dial indicator fixing plate 31 and support plates 32 positioned at both sides of the dial indicator fixing plate, the support plate has a threaded through hole, and the threaded through hole runs through There is a first fastening bolt 6, through which the base of the dial indicator is fixed on the measuring top block, and the first fastening bolt is loosened, so that the base of the dial indicator moves along the measuring top block, and the dial gauge can be adjusted After the position on the top block is measured and the dial gauge moves to the desired position, the first fastening bolt can be tightened, so that the alignment block can be used to calibrate and adjust the installation position of the dial gauge.

The dial indicator is fixed on the dial indicator fixing plate by the second fastening bolt (the position of the second fastening bolt can be set according to actual needs, not marked in the figure), and the second fastening bolt can be removed conveniently. Replace the dial gauge or use other types of dial gauges.

The alignment block is an L-shaped structure, and one of the sides of the L-shaped structure serves as a reference plane for aligning the dial gauge head with the top cone structure.

The bottom surface of the fixing seat has a rectangular groove 11, and a measuring top block is fixed on the bottom surface of the rectangular groove by two third fastening bolts 7.

The depth of the rectangular groove is greater than the thickness of the bolt cap of the third fastening bolt, which facilitates the horizontal placement of the fixing seat.

The measuring device using method of the present utility model comprises the following steps:

Step 1: Fix the measuring top block on the fixed base with two third fastening bolts, select a suitable type of dial gauge, and fix it on the dial gauge fixing plate of the dial gauge base with the second fastening bolts.

Step 2: Place the alignment block on the side of the dial indicator probe and the top cone structure of the measuring top block, so that the alignment block is close to the top cone structure, and then adjust the position of the dial gauge base on the top block so that The measuring head is in contact with the alignment block. Use the alignment block to install the dial indicator head on a plane vertical to the top cone structure, and then use the first fastening bolt to fix the dial indicator base with the measuring top block. .

Step 3: Adjust the screw cap of the dial indicator to make it read zero, and remove the alignment block.

Step 4: Take the impact sample after the Charpy impact test, put the two samples in a straight line so that the compressed side faces each other, take half of the sample, and place the part that has not undergone impact deformation close to the top of the measuring jack block On the cone structure, the dial gauge probe is in contact with the part of the sample where the impact deformation occurs, and the reading of the dial gauge is recorded, and the same side of the other half of the sample is measured in the same way, and the smaller value of the two measured values is discarded.

Step 5: Perform the measurements described in Step 4 on the other side of the impact specimen halves.

Step 6: Take the sum of the maximum values measured on both sides as the lateral expansion of the sample.

Although the specific implementation of the utility model has been described above in conjunction with the accompanying drawings, it does not limit the protection scope of the utility model. Those skilled in the art should understand that on the basis of the technical solution of the utility model, those skilled in the art do not need to Various modifications or deformations that can be made with creative efforts are still within the protection scope of the present utility model.

Claims (6)

1. A device for measuring the side expansion of a Charpy impact sample, characterized in that it comprises a fixed seat, the fixed seat is fixed with a measuring top block, and the movable connection of the measuring top block has a micrometer Table base, a dial gauge is detachably connected to the base of the dial gauge, and one end of the measuring top block has a top cone structure, and the top cone structure is located on the same side as the measuring head of the dial gauge, and the measurement The Charpy impact sample side expansion device also has an alignment block, which is used to ensure that the top cone structure and the measuring head of the dial gauge are located on the same vertical plane. 2. A kind of device that is used to measure the side expansion of Charpy impact sample as claimed in claim 1, is characterized in that, described dial gauge base is U-shaped structure, comprises dial gauge fixing plate and is positioned at dial gauge The support plates on both sides of the meter fixing plate, the support plate has a threaded through hole, and the first fastening bolt runs through the threaded through hole, and the dial gauge base is fixed on the measuring top block through the first fastening bolt . 3. A device for measuring the side expansion of a Charpy impact sample according to claim 2, wherein the dial gauge is fixed on the dial gauge fixing plate by a second fastening bolt. 4. A device for measuring lateral expansion of a Charpy impact sample according to claim 1, wherein the alignment block is an L-shaped structure. 5. A kind of device that is used to measure the lateral expansion of Charpy impact sample as claimed in claim 1, is characterized in that, described holder bottom surface has rectangular groove, and the bottom surface of rectangular groove is fastened by the third The bolt is fixed with the measuring top block. 6. A device for measuring lateral expansion of a Charpy impact sample according to claim 5, wherein the depth of the rectangular groove is greater than the thickness of the bolt cap of the third fastening bolt.