Work fixture for heat treatment of macroscopic sample

Abstract

The utility model discloses a work fixture for heat treatment of a low-power sample, and belongs to the field of metal material processing. The tool clamp comprises an upper supporting frame and a lower supporting frame, the four corners of the upper supporting frame and the four corners of the lower supporting frame are connected through supporting rods, a plurality of first stop levers are arranged on the lower supporting frame, a plurality of second stop levers are movably connected to the upper supporting frame, and the extending directions of the first stop levers and the extending directions of the second stop levers are perpendicular to each other. A plurality of first stop levers are arranged on the lower supporting frame to support the bottom of a sample, a plurality of second stop levers are movably connected to the upper supporting frame, the upper supporting frame is divided into a plurality of spaces by the second stop levers, the second stop levers are arranged on the upper supporting frame, and fixing rings are arranged at the two ends of the second stop levers and are composed of two semicircular structures. And the second stop levers are detachably connected with the upper supporting frame, so that the number of the second stop levers can be conveniently adjusted according to different sizes of the samples, and the tool can accommodate more sample wafers for heat treatment.

Description

Technical Field

[0001] This utility model relates to the field of metal material processing, and more specifically, to a tooling fixture for heat treatment of low-magnification samples. Background Technology

[0002] Low-magnification air-firing is an effective method for detecting the uniformity of microstructure in bar stock and is a mandatory test item for bar stock leaving the factory. Each bar stock needs to undergo 200% low-magnification air-firing microstructure testing, and a large number of samples need to be air-fired.

[0003] The dry-fire process involves loading the sample into the furnace at the designated temperature, heating it to 950℃, holding it for 90 minutes, then heating it to 995℃ and holding it for 30 minutes, followed by furnace cooling to 700℃ before air cooling. From furnace start-up to final unloading, each furnace takes approximately 10.5 hours, with a maximum of two furnaces loaded per day, placing significant production pressure on the heat treatment operation. Under normal heat treatment conditions, only four samples can be loaded flat in one furnace, resulting in severe delays. Therefore, we propose a fixture for the heat treatment of low-magnification samples. Utility Model Content

[0004] The purpose of this invention is to provide a tooling fixture for heat treatment of low-magnification samples, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A tooling fixture for heat treatment of low magnification samples includes an upper support frame and a lower support frame. The upper and lower support frames are connected at their four corners by support rods. The lower support frame is provided with a plurality of first stop rods, and the upper support frame is movably connected with a plurality of second stop rods. The extension directions of the first stop rods and the second stop rods are perpendicular to each other.

[0007] Preferably, a fixing ring is provided at both ends of the second stop, the fixing ring is composed of two semi-circular structures, the two semi-circular structures are rotatably connected on the side near the end of the second stop, and a connecting strip is provided at the other end of the two semi-circular structures, the two connecting strips are fixed by bolts.

[0008] Preferably, the end of the second stop has an arc-shaped groove.

[0009] Preferably, the first stop bar is provided with connecting rings at both ends, and the connecting rings are sleeved on the lower support frame.

[0010] Preferably, the connecting ring is movably connected to the lower support frame, and a limit screw is provided through the connecting ring, with the limit screw passing through the connecting ring and contacting the surface of the lower support frame.

[0011] Preferably, the support rod is a telescopic structure.

[0012] Preferably, the support rod includes an inner sleeve and an outer sleeve, which are slidably fitted together, and both the inner sleeve and the outer sleeve have multiple limiting holes.

[0013] Preferably, the upper support frame and the lower support frame are configured as telescopic structures in their length direction.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] This invention features multiple first stop bars on a lower support frame to support the bottom of the sample, and multiple second stop bars movably connected to an upper support frame. The extension directions of the first and second stop bars are perpendicular to each other. The multiple second stop bars divide the upper support frame into multiple spaces, limiting the position of the sample on both sides. Furthermore, the second stop bars are detachably connected to the upper support frame, allowing the number of second stop bars to be adjusted according to different sample sizes. This enables the fixture to accommodate samples of different heights, shapes, and sizes for heat treatment. Attached Figure Description

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

[0017] Figure 2 This is a schematic diagram of the installation structure of the first and second stop bars of this utility model.

[0018] Figure 3 This is a schematic diagram of the connection structure between the second stop and the fixing ring of this utility model.

[0019] The labels in the diagram are as follows: 1. Upper support frame; 2. Lower support frame; 3. Support rod; 4. First stop rod; 5. Second stop rod; 6. Fixing ring; 7. Connecting ring; 8. Sample piece. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] Example:

[0022] Please see Figure 1-3A fixture for heat treatment of low-magnification samples includes an upper support frame 1 and a lower support frame 2. The upper and lower support frames 1 and 2 are connected at their four corners by support rods 3. The lower support frame 2 has multiple first stop rods 4, which support the bottom of the sample 8. At least two first stop rods 4 are provided. Multiple second stop rods 5 are movably connected to the upper support frame 1. The extension directions of the first and second stop rods 4 and 5 are perpendicular to each other. The multiple second stop rods 5 divide the upper support frame 1 into multiple spaces, accommodating a larger number of samples 8. The second stop rods 5 are movably connected to the upper support frame 1, allowing the number of second stop rods 5 to be increased as needed. Figure 1 As shown, multiple second stops 5 divide the upper support frame 1 into nine spaces, capable of accommodating nine sample pieces 8. Furthermore, the arrangement of the first stops 4 and the second stops 5 allows the fixture to accommodate sample pieces 8 of different heights, shapes, and sizes for heat treatment.

[0023] In this application, both ends of the second stop 5 are provided with fixing rings 6, which can slide along the second stop 5. The fixing rings 6 are composed of two semi-circular structures, which are rotatably connected on the side near the end of the second stop 5. The other end of the two semi-circular structures is provided with a connecting strip, and the two connecting strips are connected and fixed by bolts. The fixing rings 6 facilitate the adjustment of the distance between two adjacent second stop 5. By setting the fixing rings 6 as two opposite semi-circular structures, it is easy to connect the fixing rings 6 to the upper support frame 1. When the size of the sample 8 changes, the distance between two adjacent second stop 5 can be adjusted to adapt to the size of the sample 8. At the same time, the number of second stop 5 can be increased as needed to accommodate more samples 8.

[0024] In this application, the end of the second stop 5 is provided with an arc-shaped groove, such as... Figure 3 As shown, one of the semicircular structures is connected to the end of the second stop 5, and the other semicircular structure is located on one side of the arc-shaped groove. The arc-shaped groove facilitates the rotation of the lower semicircular structure relative to the upper semicircular structure, thereby enabling the opening and closing of the fixing ring 6.

[0025] In this application, the first stop rod 4 has connecting rings 7 at both ends, and the connecting rings 7 are sleeved on the lower support frame 2. The connecting rings 7 are movably connected to the lower support frame 2, facilitating adjustment of the distance between adjacent first stop rods 4. A limiting screw passes through the connecting ring 7 and contacts the surface of the lower support frame 2. The distance between the two first stop rods 4 can be adjusted according to changes in the size of the sample 8, providing better support for the sample 8. After adjusting the distance between the two first stop rods 4, rotating the limiting screw causes it to press against the lower support frame 2, thereby fixing the position of the first stop rod 4.

[0026] In this application, the support rod 3 is a telescopic structure, and the height of the support rod 3 can be adjusted according to the size of the sample 8 to further adapt to samples 8 of different sizes.

[0027] In this application, the support rod 3 includes an inner sleeve and an outer sleeve, which are slidably fitted together. Both the inner sleeve and the outer sleeve have multiple limiting holes. The length of the support rod 3 is fixed by a pin engaging with the limiting holes on the inner sleeve and the outer sleeve.

[0028] In one possible embodiment, the upper support frame 1 and the lower support frame 2 can also be configured as telescopic structures along their lengths. By adjusting the lengths of the upper support frame 1 and the lower support frame 2, more samples 8 can be accommodated. Simultaneously, the first stop 4 is also a telescopic structure to adapt to the length of the lower support frame 2.

[0029] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A tooling fixture for heat treatment of low-magnification samples, comprising an upper support frame (1) and a lower support frame (2), characterized in that: The upper support frame (1) and the lower support frame (2) are connected through support rods (3) at four corners, a plurality of first blocking rods (4) are arranged on the lower support frame (2), a plurality of second blocking rods (5) are movably connected on the upper support frame (1), and the extending directions of the first blocking rods (4) and the second blocking rods (5) are perpendicular to each other.

2. A fixture for heat treating a low magnification specimen as defined in claim 1, wherein: Both ends of the second blocking rod (5) are provided with fixing rings (6), the fixing ring (6) is composed of two semicircular structures, the two semicircular structures are movably connected near one side of the end of the second blocking rod (5), the other ends of the two semicircular structures are provided with connecting strips, and the two connecting strips are fixed through bolt connection.

3. A fixture for heat treating a low magnification specimen as defined in claim 2, wherein: An arc-shaped groove is formed in the end of the second blocking rod (5).

4. The fixture of claim 1, wherein: The first blocking rod (4) is provided with a connecting ring (7) at both ends, and the connecting ring (7) is sleeved on the lower support frame (2).

5. A fixture for heat treating a low magnification specimen as defined in claim 4, wherein: The connecting ring (7) is movably connected with the lower support frame (2), a limiting screw is arranged to penetrate the connecting ring (7), and the limiting screw is in surface contact with the lower support frame (2) through the connecting ring (7).

6. A fixture for heat treating a low magnification specimen as defined in claim 1, wherein: The support rod (3) is of a telescopic structure.

7. A fixture for heat treating a low magnification specimen as defined in claim 6, wherein: The support rod (3) comprises an inner sleeve and an outer sleeve, the inner sleeve and the outer sleeve are in sliding fit, and a plurality of limiting holes are formed in the inner sleeve and the outer sleeve.

8. A fixture for heat treating a low magnification specimen as defined in claim 1, wherein: The upper support frame (1) and the lower support frame (2) are provided with telescopic structures in the length direction.

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