High-precision rare earth metal pinch-off device

Abstract

The utility model relates to the technical field of pinch-off devices, in particular to a high-precision rare earth metal pinch-off device which comprises a mounting base, a rectangular shell is fixedly mounted on the mounting base, a metal pinch-off mechanism is movably mounted on the rectangular shell, and a pinch-off auxiliary mechanism for cooling rare earth metal is arranged on the mounting base. The metal pinch-off mechanism comprises a first lead screw assembly movably installed on the rectangular shell, the outer portion of the first lead screw assembly is in threaded connection with a movable protruding block, and a fixed sliding rail is fixedly installed at the lower end of the movable protruding block. By arranging the metal pinch-off mechanism and utilizing the synergistic effect of X-axis, Y-axis and Z-axis linkage and the angle-adjustable arc-shaped cutter, submillimeter-level positioning accuracy can be achieved, it is ensured that a cutting path is accurately matched with the geometric center of a workpiece, edge breakage caused by eccentric stress is avoided, the arc-shaped cutter replaces a traditional flat-edge cutter, and the production cost is reduced. The contact stress is uniformly distributed, and the section integrity can be effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of clamping device technology, and in particular to a high-precision rare earth metal clamping device. Background Technology

[0002] Rare earth metals (such as neodymium, praseodymium, and samarium) are widely used in new energy, aerospace and other fields due to their unique magnetic and optical properties. They need to be cut and clamped during processing.

[0003] However, most of the existing clamping devices use mechanical stamping or shearing. Due to the unique physical properties of rare earth metals (high brittleness, easy oxidation, and lattice sensitivity), stress concentration is easily caused during the clamping process, which leads to the propagation of microcracks and poor cross-sectional quality. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a high-precision rare earth metal clamping device, which solves the technical problem that existing clamping devices are prone to microcrack propagation and edge chipping during the cutting of rare earth metals, resulting in poor cross-sectional quality. It has the advantages of uniform contact stress distribution and can effectively improve cross-sectional integrity.

[0005] To solve the above technical problems, this utility model provides the following technical solution: a high-precision rare earth metal clamping device, including a mounting base, a rectangular shell fixedly mounted on the mounting base, a workpiece body placed on the upper end of the mounting base, a metal clamping mechanism movably mounted on the rectangular shell, and a clamping auxiliary mechanism for cooling the rare earth metal on the mounting base; during processing, the metal clamping mechanism automatically performs stamping clamping processing on the workpiece body. Before clamping, the clamping auxiliary mechanism rapidly cools the workpiece body, which can effectively avoid micro-cracks. The metal clamping mechanism includes a first lead screw assembly movably mounted on the rectangular shell, a movable protrusion connected to the external thread of the first lead screw assembly, a fixed slide rail fixedly mounted at the lower end of the movable protrusion, an installation platform slidably connected on the fixed slide rail, a second lead screw assembly for driving the installation platform to move horizontally inside the fixed slide rail, a driving cylinder fixedly mounted on the installation platform, and an arc-shaped cutter set at the output end of the driving cylinder. During the clamping process, the arc-shaped cutter can move along the X-axis and Y-axis respectively under the action of the first lead screw assembly and the second lead screw assembly.

[0006] Preferably, the clamping auxiliary mechanism includes a dividing platform fixedly installed on the mounting base. A liquid nitrogen storage tank is detachably installed at the lower end of the mounting base. A nozzle assembly is provided inside the rectangular shell. The nozzle assembly is connected to the liquid nitrogen storage tank. Before the clamping process, the liquid nitrogen in the liquid nitrogen storage tank will be sprayed out through the nozzle assembly, thereby rapidly cooling the workpiece body.

[0007] Preferably, the movable protrusion contacts the upper end of the rectangular housing cavity, thereby preventing the movable protrusion from rotating synchronously with the first lead screw assembly.

[0008] Preferably, the arc-shaped cutter is rotatably connected to the output end of the drive cylinder, and the output end of the drive cylinder is equipped with a micro motor for adjusting the angle of the arc-shaped cutter. During the process of clamping rare earth metals, the angle of the arc-shaped cutter can be automatically adjusted by the micro motor.

[0009] Preferably, a positioning sensor for determining the position of the arc-shaped cutter is fixedly installed on the mounting platform. During the movement of the mounting platform, the positioning sensor will monitor the position of the arc-shaped cutter in real time.

[0010] Preferably, a sliding baffle is movably mounted on the rectangular shell. The sliding baffle is a transparent acrylic plate, allowing workers to observe the state of the workpiece through the transparent acrylic plate.

[0011] By employing the above technical solution, this utility model provides a high-precision rare earth metal clamping device, which has at least the following beneficial effects:

[0012] 1. This utility model, by setting up a metal clamping mechanism, utilizes the synergistic effect of X, Y, and Z axis linkage and an angle-adjustable arc-shaped cutter to achieve sub-millimeter positioning accuracy, ensuring that the cutting path accurately matches the geometric center of the workpiece, avoiding edge chipping caused by eccentric force, and replacing the traditional flat-blade cutter with an arc-shaped cutter to make the contact stress distribution uniform, which can effectively improve the integrity of the cross-section.

[0013] 2. By setting up a clamping auxiliary mechanism, this utility model utilizes the cooperation between the nozzle assembly and the liquid nitrogen storage tank to rapidly cool the rare earth metal workpiece before clamping, causing the rare earth metal to change from a ductile to a brittle state, promoting cleavage fracture. Then, combined with the segmented clamping process (low-pressure cutting → high-pressure clamping), it can effectively avoid stress abrupt changes and prevent instantaneous stress concentration that could lead to the propagation of microcracks. Attached Figure Description

[0014] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0015] Figure 1 This is a perspective view of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the internal structure of the rectangular shell in this utility model;

[0017] Figure 3 This is a schematic diagram of the metal clamping mechanism in this utility model;

[0018] Figure 4 This is a schematic diagram of the clamping auxiliary mechanism in this utility model.

[0019] In the figure: 1. Mounting base; 2. Rectangular housing; 3. Metal clamping mechanism; 301. First lead screw assembly; 302. Movable protrusion; 303. Fixed slide rail; 304. Mounting platform; 305. Second lead screw assembly; 306. Drive cylinder; 307. Arc-shaped cutter; 308. Positioning sensor; 4. Clamping auxiliary mechanism; 401. Dividing platform; 402. Liquid nitrogen storage tank; 403. Nozzle assembly; 404. Sliding baffle; 5. Workpiece body. 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. 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.

[0021] Example 1

[0022] Most existing clamping devices rely on mechanical stamping or shearing. Due to the unique physical properties of rare earth metals (high brittleness, easy oxidation, and lattice sensitivity), stress concentration easily occurs during clamping, leading to microcrack propagation and poor fracture surface quality. To address this technical deficiency in existing technologies, such as... Figures 1-4 As shown, this embodiment proposes a high-precision rare earth metal clamping device, which can achieve sub-millimeter positioning accuracy, ensure that the cutting path accurately matches the geometric center of the workpiece, and avoid edge chipping caused by eccentric force. The device includes a mounting base 1, on which a rectangular shell 2 is fixedly mounted. The workpiece body 5 is placed on the upper end of the mounting base 1. A metal clamping mechanism 3 is movably mounted on the rectangular shell 2. The mounting base 1 is provided with a clamping auxiliary mechanism 4 for cooling the rare earth metal. During processing, the metal clamping mechanism 3 will automatically perform stamping clamping processing on the workpiece body 5. Before clamping, the clamping auxiliary mechanism 4 will quickly cool the workpiece body 5, which can effectively avoid micro-cracks.

[0023] Specifically, the metal clamping mechanism 3 includes a first lead screw assembly 301 movably mounted on the rectangular housing 2. A movable protrusion 302 is threaded onto the external side of the first lead screw assembly 301. The movable protrusion 302 contacts the upper end of the inner cavity of the rectangular housing 2, thereby preventing the movable protrusion 302 from rotating synchronously with the first lead screw assembly 301. A fixed slide rail 303 is fixedly mounted on the lower end of the movable protrusion 302. A mounting platform 304 is slidably connected to the fixed slide rail 303. A second lead screw assembly 305 is provided inside the fixed slide rail 303 for driving the mounting platform 304 to move horizontally. A drive cylinder 306 is fixedly mounted on the mounting platform 304. The output end of the drive cylinder 306 is provided with an arc-shaped... During the clamping process, the curved tool 307 can move along the X-axis and Y-axis respectively under the action of the first lead screw assembly 301 and the second lead screw assembly 305. The curved tool 307 is rotatably connected to the output end of the drive cylinder 306. The output end of the drive cylinder 306 is equipped with a micro motor to adjust the angle of the curved tool 307. During the clamping process of rare earth metal, the angle of the curved tool 307 can be automatically adjusted by the micro motor. A positioning sensor 308 for determining the position of the curved tool 307 is fixedly installed on the mounting platform 304. During the movement of the mounting platform 304, the positioning sensor 308 will monitor the position of the curved tool 307 in real time.

[0024] To improve the cross-sectional quality and enhance the material's brittleness, this embodiment includes a clamping auxiliary mechanism 4. Specifically, the clamping auxiliary mechanism 4 includes a dividing platform 401 fixedly installed on the mounting base 1. A liquid nitrogen storage tank 402 is detachably installed at the lower end of the mounting base 1. A nozzle assembly 403 is provided inside the rectangular shell 2, and the nozzle assembly 403 is connected to the liquid nitrogen storage tank 402. Before clamping, the liquid nitrogen in the liquid nitrogen storage tank 402 will be sprayed out through the nozzle assembly 403 to quickly cool the workpiece body 5. A sliding baffle 404 is movably installed on the rectangular shell 2. The sliding baffle 404 is a transparent acrylic plate, allowing the operator to observe the state of the workpiece body 5 through the transparent acrylic plate.

[0025] As can be seen from the above, when cutting and clamping rare earth metals, the workers first push the sliding baffle 404 upward, then place the workpiece body 5 above the dividing platform 401. After placement, the sliding baffle 404 is pulled down to make the interior of the rectangular shell 2 a sealed environment.

[0026] Next, the first lead screw assembly 301 will drive the movable protrusion 302 to move along the X-axis, and the second lead screw assembly 305 will drive the mounting platform 304 to move along the Y-axis. During the movement, the positioning sensor 308 will always monitor the position of the arc-shaped cutter 307, so that the arc-shaped cutter 307 moves above the designated cutting point.

[0027] At the same time, the liquid nitrogen inside the liquid nitrogen storage tank 402 will be sprayed out through the nozzle assembly 403, thereby rapidly cooling the workpiece body 5 and increasing the brittleness of the rare earth metal.

[0028] Subsequently, the arc-shaped cutter 307 will first perform low-pressure cutting on the workpiece body 5 under the action of the drive cylinder 306, and then perform high-pressure clamping, which can effectively avoid stress sudden change and prevent microcrack propagation caused by instantaneous stress concentration.

[0029] Furthermore, using an arc-shaped cutting tool can also disperse contact stress and reduce the generation of microcracks.

[0030] This embodiment, by setting up a metal clamping mechanism 3, utilizes the synergistic effect of X, Y, and Z-axis linkage and an angle-adjustable arc-shaped cutter 307 to achieve sub-millimeter-level positioning accuracy, ensuring that the cutting path precisely matches the geometric center of the workpiece, avoiding edge chipping caused by eccentric force. Furthermore, replacing the traditional flat-blade cutter with the arc-shaped cutter 307 ensures uniform distribution of contact stress, effectively improving the integrity of the cross-section. Moreover, by setting up a clamping auxiliary mechanism 4, this embodiment utilizes the cooperation between the nozzle assembly 403 and the liquid nitrogen storage tank 402 to rapidly cool the rare earth metal workpiece before clamping, causing the rare earth metal to change from a ductile to a brittle state, promoting cleavage fracture. Then, combined with a segmented clamping process (low-pressure cutting → high-pressure clamping), it can effectively avoid stress abrupt changes and prevent instantaneous stress concentration that could lead to microcrack propagation.

[0031] The control method of this utility model is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art. The power supply is also common knowledge in the field. Since this utility model is mainly used to protect mechanical devices, the control method and circuit connection will not be explained in detail.

[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0033] 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 high-precision rare earth metal clamping device, comprising a mounting base (1), a rectangular shell (2) fixedly mounted on the mounting base (1), and a workpiece body (5) placed on the upper end of the mounting base (1), characterized in that: A metal clamping mechanism (3) is movably installed on the rectangular shell (2), and a clamping auxiliary mechanism (4) for cooling rare earth metals is provided on the mounting base (1); The metal clamping mechanism (3) includes a first lead screw assembly (301) movably mounted on a rectangular housing (2). The first lead screw assembly (301) is externally threaded with a movable protrusion (302). A fixed slide rail (303) is fixedly mounted on the lower end of the movable protrusion (302). An installation platform (304) is slidably connected on the fixed slide rail (303). A second lead screw assembly (305) for driving the installation platform (304) to move horizontally is provided inside the fixed slide rail (303). A drive cylinder (306) is fixedly mounted on the installation platform (304). An arc-shaped cutter (307) is provided at the output end of the drive cylinder (306).

2. The high-precision rare earth metal clamping device according to claim 1, characterized in that: The clamping auxiliary mechanism (4) includes a dividing platform (401) fixedly installed on the mounting base (1). A liquid nitrogen storage tank (402) is detachably installed at the lower end of the mounting base (1). A nozzle assembly (403) is provided inside the rectangular shell (2). The nozzle assembly (403) is connected to the liquid nitrogen storage tank (402).

3. The high-precision rare earth metal clamping device according to claim 1, characterized in that: The movable protrusion (302) contacts the upper end of the inner cavity of the rectangular shell (2).

4. The high-precision rare earth metal clamping device according to claim 1, characterized in that: The arc-shaped cutter (307) is rotatably connected to the output end of the drive cylinder (306), and the output end of the drive cylinder (306) is equipped with a micro motor for adjusting the angle of the arc-shaped cutter (307).

5. The high-precision rare earth metal clamping device according to claim 1, characterized in that: A positioning sensor (308) for determining the position of the arc-shaped cutter (307) is fixedly installed on the mounting platform (304).

6. The high-precision rare earth metal clamping device according to claim 2, characterized in that: A sliding baffle (404) is movably mounted on the rectangular shell (2), and the sliding baffle (404) is a transparent acrylic plate.

Images