Metal cutting jig

Abstract

The application relates to a metal cutting jig which comprises a container, a cover, a movable top cover and a lifting mechanism, a containing groove is arranged in the container, the cover is arranged above the containing groove, a plurality of cutting holes are arranged on the cover, the movable top cover is arranged on the container and located above the cover, a plurality of cutting blades are arranged at the lower part of the movable top cover, the lifting mechanism is arranged between the container and the movable top cover, and the lifting mechanism drives the movable top cover to move up and down; wherein the cutting blades are arranged at equal intervals and correspond to the cutting holes one by one, when the movable top cover is lowered, the cutting blades pass through the cutting holes and enter the containing groove to uniformly cut the sample placed in the containing groove. The metal cutting jig is simple in structure, convenient to disassemble, can cut the metal sample in a molten state, can homogenize the cutting of the metal sample, and can avoid problems such as sample loss, generation of debris, large difference in uniformity when cutting the metal sample after forming, etc.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of metal cutting, more particularly to a metal cutting jig. BACKGROUND

[0002] It is crucial to study the radioactive lead-bismuth alloy for the research and development of lead-bismuth fast reactors. In the related research of radionuclides, the measurement of alpha rays involves sampling and dissolving of samples, but once the samples are dissolved, the experiment cannot be performed. At present, the most effective method for quantifying the initial sample activity is to homogenize the initial sample and take a sample in proportion, and then to obtain the total activity of the initial sample according to the experimental results of the sampling sample. Since the quantification of the initial sample activity affects the data processing and analysis of the entire experiment, it is very important to homogenize and divide the activated initial sample, and a tool capable of safely and uniformly cutting the activated initial sample needs to be developed. SUMMARY

[0003] In view of the problems in the prior art, the present application provides a metal cutting jig capable of uniformly cutting radioactive lead-bismuth alloy.

[0004] The technical scheme adopted by the present application to solve its technical problems is: a metal cutting jig is constructed, comprising:

[0005] a container, wherein an accommodating groove with an upper opening is arranged in the container,

[0006] a cover, wherein the cover is arranged above the accommodating groove, a plurality of cutting holes are arranged on the cover, and the cutting holes penetrate the cover in the vertical direction,

[0007] a movable top cover, wherein the movable top cover is arranged on the container, the movable top cover is located above the cover, and a plurality of cutting blades are arranged on the lower part of the movable top cover,

[0008] a lifting mechanism, wherein the lifting mechanism is arranged between the container and the movable top cover, and the lifting mechanism drives the movable top cover to move up and down;

[0009] wherein the cutting blades are arranged at equal intervals, the cutting blades are arranged one by one corresponding to the cutting holes, when the movable top cover descends, the cutting blades pass through the cutting holes and enter the accommodating groove to uniformly cut the sample placed in the accommodating groove.

[0010] In some embodiments, a heating element is arranged in the container, and the heating element is used to heat the sample in the accommodating groove to a molten state.

[0011] In some embodiments, a heat insulation layer is arranged on the outer surface of the container.

[0012] In some embodiments, the metal cutting jig is made of a material with a melting point higher than 300℃.

[0013] In some embodiments, the container is made of stainless steel or ceramic.

[0014] In some embodiments, the cutting blade is made of stainless steel or ceramic.

[0015] In some embodiments, the height of the cutting blade is equal to the sum of the thickness of the cover and the height of the accommodation groove.

[0016] In some embodiments, the lifting mechanism comprises a horizontally slidable lifting slider, which is arranged between the container and the movable cover. At least one of the contact surface between the lifting slider and the container and the contact surface between the lifting slider and the movable cover is provided with a ramp section. When the lifting slider slides horizontally, the movable cover is driven by the ramp section to move upward or downward.

[0017] In some embodiments, the contact surface between the lifting slider and the movable cover is provided with a first horizontal section, and the contact surface between the lifting slider and the container is provided with a second horizontal section. The distance between the first horizontal section and the second horizontal section is the height of the lifting slider.

[0018] In some embodiments, the lifting slider is provided with a guide groove, and the movable cover is provided with a guide shaft corresponding to the guide groove.

[0019] The use process of the metal cutting jig of the present application is as follows: the lead-bismuth alloy sample to be cut is placed in the accommodation groove, and then the movable cover and the lifting mechanism are installed. During assembly, the cutting blade corresponds to the cutting hole one by one, and the initial state of the movable cover is the high position away from the container. The lead-bismuth alloy sample in the metal cutting jig is heated to warm up until the lead-bismuth alloy sample enters the molten state. After the lead-bismuth alloy sample enters the molten state, the metal cutting jig is taken out and the liquid lead-bismuth alloy is shaken. The lifting mechanism is operated to move the movable cover to drive the cutting blade to fall. After the cutting blade falls, it passes through the cutting hole and enters the accommodation groove to divide the liquid lead-bismuth alloy in the accommodation groove into equal parts. The metal cutting jig is placed in cold water for quenching to achieve rapid cooling of the lead-bismuth alloy. The metal cutting jig is disassembled, and the uniformly divided sample is taken out.

[0020] The metal cutting jig has at least the following beneficial effects: the metal cutting jig can cut the metal in a molten state, can cut metal samples of different shapes and sizes uniformly, avoids sample loss, debris generation, and large uniformity differences when cutting after metal forming, and the like, in addition, the metal cutting jig has a simple structure, is easy to disassemble, and is easy to clean and reuse. BRIEF DESCRIPTION OF DRAWINGS

[0021] The application will be further described below in conjunction with the drawings and examples, wherein:

[0022] Figure 1 is a structural schematic diagram of a metal cutting jig provided by some embodiments of the application;

[0023] Figure 2 is Figure 1 is an exploded schematic diagram of the metal cutting jig in the embodiment;

[0024] Figure 3 is a front view of the metal cutting jig before cutting;

[0025] Figure 4 is a left view of the metal cutting jig before cutting;

[0026] Figure 5 is a front view of the metal cutting jig after cutting;

[0027] Figure 6 is a left view of the metal cutting jig after cutting.

[0028] BRIEF DESCRIPTION OF DRAWINGS

[0029] Container 100, containing groove 110, cover 200, cutting hole 210, movable top cover 300, cutting blade 310, guide shaft 320, lifting slide 400, first horizontal section 410, slope section 420, guide groove 421, second horizontal section 430. DETAILED DESCRIPTION

[0030] In order to have a clearer understanding of the technical features, objects and effects of the application, the specific embodiments of the application will be described in detail with reference to the drawings. In the following description, many specific details are set forth in order to provide a thorough understanding of the application. However, the application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the spirit of the application, therefore the application is not limited to the specific embodiments disclosed below.

[0031] In the description of the application, it needs to be understood that the terms "longitudinal", "transverse", "upper", "lower", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings or the orientation or positional relationship commonly used when the product of the application is used, and are only for the convenience of describing the application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application.

[0032] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise explicitly specified and limited.

[0033] In this application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0034] In this application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. Moreover, the first feature "above" the second feature can be directly above or obliquely above the second feature, or only indicate that the first feature is higher than the second feature in horizontal height. The first feature "below" the second feature can be directly below or obliquely below the second feature, or only indicate that the first feature is lower than the second feature in horizontal height.

[0035] Figures 1 to 6 A metal cutting jig in some embodiments of the application is shown.

[0036] As Figure 1 , Figure 2As shown, the present application provides a metal cutting jig, which comprises a container 100, a cover 200, a movable top cover 300 and a lifting mechanism. The container 100 is provided with an upper opening containing groove 110 for placing the sample to be cut. Generally, the containing groove 110 is provided in a regular shape, such as a rectangular groove, to facilitate uniform cutting. The cover 200 is arranged above the containing groove 110 and is used to fix the sample in the container 100. The cover 200 is provided with a plurality of cutting holes 210 which penetrate the cover 200 in the vertical direction. The movable top cover 300 is arranged on the container 100 and above the cover 200. The movable top cover 300 is provided with a plurality of cutting blades 310 at the lower part. The cutting blades 310 are arranged at equal intervals and correspond to the cutting holes 210 one by one. The lifting mechanism is arranged between the container 100 and the movable top cover 300. The lifting mechanism drives the movable top cover 300 to move up and down. When the lifting mechanism drives the movable top cover 300 to move down, the cutting blades 310 pass through the cutting holes 210 and enter the containing groove 110 to uniformly cut the sample placed in the containing groove 110. The cutting holes 210 have the functions of calibrating the direction of the cutting blades 310 and preventing the cutting blades 310 from being damaged by bending.

[0037] In this embodiment, the lifting mechanism comprises a horizontally slidable lifting slider 400 which is arranged between the container 100 and the movable top cover 300. Figure 1 、 Figure 2 、 Figure 4 and Figure 6 As shown, the lifting slider 400 in this embodiment is wedge-shaped. The lower part of the lifting slider 400 contacts the container 100 and is a second horizontal section 430. The upper part of the lifting slider 400 contacts the movable top cover 300 and is divided into two sections, specifically, a first horizontal section 410 and an inclined section 420. The distance between the first horizontal section 410 and the second horizontal section 430 is the height of the lifting slider 400. Figure 3 and Figure 4 Before cutting, the first horizontal section 410 of the lifting slider 400 is attached to the movable top cover 300. The first horizontal section 410 and the second horizontal section 430 of the lifting slider 400 support the movable top cover 300 and the container 100 respectively, which has strong stability and can prevent the movable top cover 300 from driving the cutting blades 310 to fall. When cutting, the lifting slider 400 is moved to the position where the first horizontal section 410 is separated from the movable top cover 300. At the same time, the inclined section 420 of the lifting slider 400 contacts the movable top cover 300. Due to the unstable support of the inclined section 420 and the action of gravity, the movable top cover 300 drives the cutting blades 310 to fall. After the cutting blades 310 fall, they pass through the cutting holes 210 and enter the containing groove 110 to uniformly cut the sample placed in the containing groove 110.Figure 5 and Figure 6 Fig. 9 shows the position of the container 100, the movable top cover 300 and the lifting slider 400 after the cutting of the metal cutting jig. When the movable top cover 300 is reset, the lifting slider 400 is moved in the opposite direction, so that the movable top cover 300 rises along the inclined wave section 420 until the lower part of the movable top cover 300 is in contact with the first horizontal section 410 of the lifting slider 400. Further, in order to guide and limit the movement of the lifting slider 400, a guide groove 421 is provided on the lifting slider 400, and a guide shaft 320 corresponding to the guide groove 421 is provided on the movable top cover 300. The guide shaft 320 extends into the guide groove 421, and under the limitation of the guide groove 421 and the guide shaft 320, the lifting slider 400 can only move in the forward and backward directions. The lifting mechanism in the embodiment adopts the lifting slider 400, which can simplify the structure and reduce the manufacturing cost of the metal cutting jig.

[0038] It is easily conceivable that in other embodiments, the inclined wave section 420 can also be provided on the contact surface between the lifting slider 400 and the container 100, or on both the contact surface between the lifting slider 400 and the container 100 and the contact surface between the lifting slider 400 and the movable top cover 300. Further, in other embodiments, other forms of lifting mechanisms can also be used, such as a screw rod mechanism.

[0039] Further, the height of the cutting blade 310 is equal to the sum of the thickness of the cover 200 and the height of the accommodation groove 110, so that after the cutting blade 310 falls, the sample can be completely cut, and at the same time, the cutting blade 310 is prevented from colliding with the bottom of the accommodation groove 110, thereby improving the service life of the cutting blade 310.

[0040] The metal cutting jig of the present application is mainly used for cutting lead-bismuth alloy. Since the melting point of lead-bismuth alloy is between more than 100 degrees Celsius and more than 200 degrees Celsius (the composition and proportion of the alloy will affect the melting point), the metal cutting jig of the present application is preferably made of a material with a melting point higher than 300℃, which can avoid damage to the metal cutting jig during the process of heating and melting the lead-bismuth alloy. The container 100 is preferably made of stainless steel or ceramic, and the cutting blade 310 is preferably made of stainless steel or ceramic.

[0041] One of the use processes of the metal cutting jig of the present application is as follows: the lead-bismuth alloy sample to be cut is placed in the accommodation groove 110, the cover 200 is covered, and then the movable top cover 300 and the lifting mechanism are installed. When assembling, the cutting blade 310 corresponds to the cutting hole 210 one by one, and the initial state of the movable top cover 300 is the high position state away from the container 100; the lead-bismuth alloy sample in the metal cutting jig is heated to warm up until the lead-bismuth alloy sample enters the molten state, wherein the heating operation can choose to put the metal cutting jig into the heating furnace to heat the metal cutting jig as a whole, and the sample in the molten state is easier to cut and can better ensure the uniformity of cutting; after the lead-bismuth alloy sample enters the molten state, the metal cutting jig is taken out and the liquid lead-bismuth alloy is shaken evenly, the lifting mechanism is operated to act, the movable top cover 300 drives the cutting blade 310 to fall, the cutting blade 310 falls through the cutting hole 210 into the accommodation groove 110, and the liquid lead-bismuth alloy in the accommodation groove 110 is divided into equal parts; the metal cutting jig is placed in cold water for quenching to realize rapid cooling of the lead-bismuth alloy; the metal cutting jig is disassembled, and the uniformly divided sample is taken out. After use, the residual metal in the jig can be cleaned with nitric acid immersion to realize repeated use of the jig.

[0042] Further, the container 100 can also be provided with a heating element, which is used to heat the sample in the accommodation groove 110 to make the sample enter the molten state without putting the metal cutting jig into the heating furnace as a whole. In order to improve the utilization rate of the heat emitted by the heating element and avoid burns caused by overheating of the container 100, the outer surface of the container 100 can also be provided with a thermal insulation layer.

[0043] The metal cutting jig of the present application can cut the metal in the molten state, can homogenize the cutting of metal samples of different shapes and sizes, avoids the problems of sample loss, generation of debris, large difference in uniformity when cutting after forming, etc. caused by cutting after metal forming, in addition, the metal cutting jig of the present application has simple structure, is easy to disassemble, clean and reuse.

[0044] The above embodiments only express the specific implementation of the present application, which is described in detail and specifically, but it cannot be understood as a limitation on the scope of the patent of the present application; it should be pointed out that for ordinary skilled persons in the art, the above technical features can be freely combined without departing from the concept of the present application, and some deformations and improvements can be made, which all belong to the protection scope of the present application; therefore, any equivalent transformation and modification within the scope of the claims of the present application shall belong to the scope of the claims of the present application.

Claims

1. A metal cutting fixture, characterized in that, include: A container (100) having an opening at the top for receiving groove (110) inside. A cover (200) is disposed above the receiving groove (110). The cover (200) has a plurality of cutting holes (210) that penetrate the cover (200) vertically. A movable top cover (300) is disposed on the container (100) and located above the sealing cap (200). A plurality of cutting blades (310) are provided at the lower part of the movable top cover (300). A lifting mechanism is provided between the container (100) and the movable top cover (300), and the lifting mechanism drives the movable top cover (300) to perform lifting movements; The cutting blades (310) are arranged at equal intervals, and each cutting blade (310) corresponds to a cutting hole (210). When the movable top cover (300) descends, the cutting blades (310) pass through the cutting holes (210) and enter the receiving groove (110) to uniformly cut the sample placed in the receiving groove (110).

2. The metal cutting fixture according to claim 1, characterized in that, The container (100) is provided with a heating element, which is used to heat the sample in the accommodating tank (110) to make it melt.

3. The metal cutting fixture according to claim 2, characterized in that, The outer surface of the container (100) is provided with a heat insulation layer.

4. The metal cutting fixture according to any one of claims 1 to 3, characterized in that, The metal cutting fixture is made of a material with a melting point higher than 300°C.

5. The metal cutting fixture according to claim 4, characterized in that, The container (100) is made of stainless steel or ceramic.

6. The metal cutting fixture according to claim 4, characterized in that, The cutting blade (310) is made of stainless steel or ceramic.

7. The metal cutting fixture according to claim 1, characterized in that, The height of the cutting blade (310) is equal to the sum of the thickness of the cap (200) and the height of the receiving groove (110).

8. The metal cutting fixture according to claim 1, characterized in that, The lifting mechanism includes a horizontally slidable lifting slider (400), which is disposed between the container (100) and the movable top cover (300). At least one of the contact surfaces of the lifting slider (400) with the container (100) and the contact surfaces of the lifting slider (400) with the movable top cover (300) is provided with a sloping section (420). When the lifting slider (400) slides horizontally, the movable top cover (300) moves up or down under the action of the sloping section (420).

9. The metal cutting fixture according to claim 8, characterized in that, The contact surface between the lifting slider (400) and the movable top cover (300) is provided with a first horizontal section (410), and the contact surface between the lifting slider (400) and the container (100) is provided with a second horizontal section (430), and the distance between the first horizontal section (410) and the second horizontal section (430) is the height of the lifting slider (400).

10. The metal cutting fixture according to claim 8, characterized in that, The lifting slider (400) is provided with a guide groove (421), and the movable top cover (300) is provided with a guide shaft (320) corresponding to the guide groove (421).

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