Silicon carbide carrying tool with magnetic force auxiliary clamping function
The silicon carbide carrying fixture, which uses magnetic assisted clamping, solves the problem of unstable clamping during silicon carbide cutting by combining slide rails and magnets, thus achieving high-precision and high-quality cutting results.
Patent Information
- Application Number
- CN202423010301.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-06
- Publication Date
- 2025-12-02
- Estimated Expiration
- 2034-12-06
AI Technical Summary
In existing silicon carbide cutting processes, vibration and displacement of the clamping fixture lead to poor cutting accuracy and surface quality, and the vacuum adsorption method has poor stability and high cost in high-temperature environments.
The silicon carbide carrying fixture, which uses magnetic assisted clamping, achieves stable clamping and shock absorption of the carrying fixture body through the combination design of slide rails and magnets. The attraction force provided by the magnets ensures positioning accuracy and stability.
It improves the positional accuracy and stability during silicon carbide cutting, reduces the impact of vibration, and enhances cutting precision and surface quality.
Smart Images
Figure CN223617975U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of silicon carbide processing technology, specifically to a magnetically assisted clamping silicon carbide carrying fixture. Background Technology
[0002] Silicon carbide (SiC) is a highly promising semiconductor material widely used in high-power electronic devices, high-temperature sensors, optoelectronic devices, aerospace, and the automotive industry. Silicon carbide possesses excellent physical properties such as extremely high hardness, high-temperature resistance, and corrosion resistance, making its precision cutting technology crucial for high-end manufacturing.
[0003] However, the high hardness and brittleness of silicon carbide make its cutting process relatively complex. Current silicon carbide cutting processes require a fixture and a tooling body for clamping the silicon carbide. Generally, a two-component adhesive (AB glue) is used to bond the silicon carbide to the platform of the tooling body, which is then clamped by the fixture. Existing clamping methods for the tooling body mainly include mechanical clamping and vacuum adsorption. Mechanical clamping primarily uses screws to lock the tooling onto the fixture; however, due to the hardness and brittleness of silicon carbide, the tooling still vibrates during processing, causing localized stress concentration or indentations. The silicon carbide also vibrates with the tooling, increasing the risk of displacement and affecting the accuracy and surface quality of the cut surface. Vacuum adsorption mainly uses a vacuum pump to adsorb the tooling body onto the table surface; however, it has poor stability under high-temperature environments, is easily affected by uneven surfaces or complex shapes of the tooling, and the vacuum adsorption system has a complex structure and high operation and maintenance costs.
[0004] Therefore, how to achieve stable clamping of silicon carbide carrying fixtures, thereby improving the stability of silicon carbide during processing and avoiding the impact of fixture displacement or shaking on cutting accuracy and surface quality, is a technical problem that needs to be solved in this field. Utility Model Content
[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a silicon carbide carrying fixture with magnetic assisted clamping. The carrying fixture body and the clamp are slidably connected by a slide rail, and magnets are set on both sides of the slide rail, which can ensure the accuracy and stability of the position and improve the efficiency of changing parts.
[0006] To achieve this objective, the present invention adopts the following technical solution:
[0007] This utility model provides a magnetically assisted clamping silicon carbide carrying fixture, the silicon carbide carrying fixture comprising a ferromagnetic carrying fixture body and a clamp for clamping the carrying fixture body;
[0008] The clamp includes a fixed frame;
[0009] The fixed frame includes a first fixed frame and a second fixed frame arranged parallel to each other.
[0010] A ferromagnetic adsorption plate is provided above the first fixed frame and the second fixed frame;
[0011] The first fixed frame, the second fixed frame, and the adsorption plate constitute a slide rail with a groove-shaped cross section, and the extension direction of the slide rail is parallel to the axial direction of the fixed frame.
[0012] The fixed frame has receiving slots on the side near the slide rail. Magnets are installed in the receiving slots. The extension direction of the magnets is parallel to the extension direction of the slide rail. The upper edge of the magnets is magnetically connected to the adsorption plate.
[0013] The upper part of the carrying fixture body is provided with a protrusion that matches the shape of the slide rail, and the carrying fixture body is slidably connected to the slide rail of the clamp through the protrusion.
[0014] The silicon carbide carrying fixture provided by this utility model has two main advantages. First, the sliding connection between the slide rail and the protrusion allows the fixture body to move along the slide rail, ensuring accuracy and efficiency during part changing. Simultaneously, during silicon carbide cutting, the interlocking structure of the slide rail and the protrusion limits the fixture body, ensuring it remains in the predetermined position and preventing significant positional deviation. Second, by employing a ferromagnetic fixture body and a magnet, the magnetic attraction ensures the fixture body does not shift during processing, guaranteeing its positional accuracy and stability. Furthermore, the non-contact nature of the magnet provides excellent shock absorption, effectively absorbing vibrations during cutting and preventing them from affecting cutting precision. Ultimately, this improves the surface quality and cutting accuracy of the silicon carbide product.
[0015] In this invention, the "section" refers to the cut surface obtained by cutting the fixed frame and the adsorption plate along a direction perpendicular to the axis of the fixed frame.
[0016] In this invention, the magnetic-assisted clamping includes, on the one hand, two magnets on the side of the slide rail adsorbing the protruding part of the ferromagnetic carrying fixture body inside the slide rail, and on the other hand, magnets adsorbing the ferromagnetic adsorption plate above the fixing frame. Through the cooperation of the above two aspects, the fixing effect of the carrying fixture body can be further improved.
[0017] In this invention, the magnet can be a natural magnet or an electromagnet, preferably an electromagnet, which can control the magnitude and direction of the magnetic force by controlling the current.
[0018] Preferably, a first positioning pin is provided on the contact surface between the magnet and the fixed frame; the magnet is connected to the fixed frame on the same side through the first positioning pin.
[0019] Preferably, the fixed frame is provided with a first through hole that matches the first positioning pin on the same side; the first positioning pin passes through the first through hole and is locked by an adjusting nut.
[0020] Preferably, the number of the first positioning pins on the same magnet is at least two, for example, two, three, four or five, but not limited to the listed values. Other unlisted values within the range are also applicable.
[0021] Preferably, a second through hole is provided between adjacent first through holes.
[0022] Preferably, the second through hole is provided with an internal thread.
[0023] Preferably, a second positioning pin is provided in the second through hole; the second positioning pin is threadedly connected to the second through hole; the tail of the second positioning pin passes through the second through hole and contacts the magnet.
[0024] In this invention, the first positioning pin can fix the magnet and make it accurately positioned in the receiving groove, and the second positioning pin can further secure the magnet, carry the tooling body and fix the frame.
[0025] Preferably, the cross-section of the slide rail is an inverted trapezoidal groove.
[0026] Preferably, in the carrying fixture body, the protruding bottom is connected to the silicon carbide carrying platform.
[0027] Preferably, the silicon carbide carrying platform is bonded to the silicon carbide through an epoxy resin adhesive layer.
[0028] The silicon carbide carrying fixture provided by this utility model is used to carry silicon carbide in the following manner:
[0029] (1) Place the magnets into the receiving slots of the first fixed frame and the second fixed frame respectively. The first positioning pin on the surface of the magnet passes through the first through hole on the same side and is locked with an adjusting nut. Assemble the first fixed frame, the second fixed frame and the adsorption plate with the built-in magnet to form a slide rail.
[0030] (2) Slide the protrusion carrying the tooling body into the slide rail, and screw it into the second through hole through the second positioning pin until the tooling body, magnet and fixed frame are locked.
[0031] (3) Cover the bottom surface of the silicon carbide carrying platform carrying the tool body with an epoxy resin adhesive layer, and bond the silicon carbide through the epoxy resin adhesive layer to complete the carrying of silicon carbide.
[0032] Compared with the prior art, the present invention has the following beneficial effects:
[0033] (1) The silicon carbide carrying fixture provided by this utility model can move the main body of the carrying fixture through the slide rail and the protrusion through the design of the slide rail and the protrusion, so as to ensure the accuracy and efficiency when changing parts. At the same time, during the process of cutting silicon carbide, the fitting structure of the slide rail and the protrusion can limit the main body of the carrying fixture to ensure that it is in the predetermined position and avoid large positional deviation.
[0034] (2) The silicon carbide carrying fixture provided by this utility model ensures that the carrying fixture body will not be displaced during the processing by using the attraction force provided by the magnet, thus ensuring the accuracy and stability of its position. In addition, the non-contact characteristics of the magnet can play a good shock absorption effect, effectively absorb the vibration during the cutting process, avoid the impact of vibration on the cutting accuracy, and ultimately improve the surface quality and cutting accuracy of silicon carbide products. Attached Figure Description
[0035] Figure 1 A schematic diagram of the disassembly structure of the silicon carbide carrying tool provided in Embodiment 1 of this utility model;
[0036] Figure 2 This is a schematic diagram of the combined structure of the clamp provided in Embodiment 1 of this utility model;
[0037] Figure 3 Left view of the silicon carbide carrying tooling provided in Embodiment 1 of this utility model;
[0038] Figure 4 This is a front view of the silicon carbide carrying tool provided in Embodiment 1 of this utility model;
[0039] In the diagram: 001-First fixed frame; 002-Second fixed frame; 003-Adsorption plate; 004-Receiving groove; 005-Magnet; 006-First positioning pin; 007-First through hole; 008-Adjusting nut; 009-Second through hole; 010-Second positioning pin; 011-Silicon carbide carrying platform; 012-Protrusion. Detailed Implementation
[0040] It should be understood that in the description of this utility model, the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do 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, they should not be construed as limitations on this utility model.
[0041] It should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "set," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0042] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.
[0043] Example 1
[0044] This embodiment provides a magnetically assisted clamping silicon carbide carrying fixture, the disassembly structure of which is shown in the schematic diagram below. Figure 1 As shown, the left view and the front view are respectively as follows: Figure 3 and Figure 4 As shown, the silicon carbide carrying fixture includes a ferromagnetic carrying fixture body and a clamp for holding the carrying fixture body. A schematic diagram of the clamp is shown below. Figure 2 As shown, the fixture includes a fixed frame, which includes a first fixed frame 001 and a second fixed frame 002 arranged parallel to each other. A ferromagnetic adsorption plate 003 is arranged above the first fixed frame 001 and the second fixed frame 002. The first fixed frame 001, the second fixed frame 002 and the adsorption plate 003 form a slide rail with an inverted trapezoidal groove in cross section. The extension direction of the slide rail is parallel to the axial direction of the fixed frame. Receiving grooves 004 are respectively opened on the side of the fixed frame near the slide rail. A magnet 005 is arranged in the receiving groove 004. The extension direction of the magnet 005 is parallel to the extension direction of the slide rail. The upper edge of the magnet 005 is magnetically connected to the adsorption plate 003. The upper part of the carrying fixture body is provided with a protrusion 012 that matches the shape of the slide rail. The carrying fixture body is slidably connected to the slide rail of the fixture through the protrusion 012.
[0045] In this embodiment, the magnetic assisted clamping includes, on the one hand, the two magnets 005 on the side of the slide rail adsorb the protrusion 012 part of the ferromagnetic carrying fixture body inside the slide rail, and on the other hand, the magnets 005 adsorb the ferromagnetic adsorption plate 003 above the fixed frame. Through the cooperation of the above two aspects, the fixing effect of the carrying fixture body can be further improved.
[0046] In this embodiment, on the one hand, the sliding connection between the slide rail and the protrusion 012 allows the tooling body to move along the slide rail, ensuring accuracy and efficiency during part changing. Simultaneously, during silicon carbide cutting, the interlocking structure of the slide rail and the protrusion 012 limits the tooling body, ensuring it remains in the predetermined position and preventing significant positional deviation. On the other hand, by employing a ferromagnetic tooling body and a magnet 005, the attraction provided by the magnet 005 ensures that the tooling body will not shift during processing, guaranteeing its positional accuracy and stability. Furthermore, the non-contact nature of the magnet provides excellent shock absorption, effectively absorbing vibrations during cutting and preventing their impact on cutting precision, ultimately improving the surface quality and cutting accuracy of the silicon carbide product.
[0047] The contact surface between the magnet 005 and the fixed frame is provided with a first positioning pin 006. The magnet 005 is connected to the fixed frame on the same side through the first positioning pin 006. The fixed frame is provided with a first through hole 007 that matches the first positioning pin 006 on the same side. The first positioning pin 006 passes through the first through hole 007 and is locked by an adjusting nut 008. There are 4 first positioning pins 006 on the same magnet 005. A second through hole 009 is provided between adjacent first through holes 007. The second through hole 009 is provided with an internal thread. A second positioning pin 010 is provided in the second through hole 009. The second positioning pin 010 is threadedly connected to the second through hole 009. The tail of the second positioning pin 010 passes through the second through hole 009 and contacts the magnet 005.
[0048] In this embodiment, the first positioning pin 006 can fix the magnet 005 and make it accurately located in the receiving groove 004, and the second positioning pin 010 can further fasten the magnet 005, carry the tooling body and fix the frame.
[0049] In the carrying fixture body, the bottom of the protrusion 012 is connected to the silicon carbide carrying platform 011, and the silicon carbide carrying platform 011 is bonded to the silicon carbide through an epoxy resin adhesive layer (not shown in the figure).
[0050] The silicon carbide carrying fixture provided in this embodiment is used to carry silicon carbide in the following manner:
[0051] (1) Place the magnet 005 into the receiving slots 004 of the first fixed frame 001 and the second fixed frame 002 respectively. The first positioning pin 006 on the surface of the magnet 005 passes through the first through hole 007 on the same side and is locked with the adjusting nut 008. Assemble the first fixed frame 001, the second fixed frame 002 and the adsorption plate 003 with the built-in magnet 005 to form a slide rail.
[0052] (2) Slide the protrusion 012 carrying the tooling body into the slide rail, and screw it into the second through hole 009 through the second positioning pin 010 until the tooling body, magnet 005 and fixed frame are locked.
[0053] (3) Cover the bottom surface of the silicon carbide carrying platform 011 carrying the tooling body with an epoxy resin adhesive layer, and bond the silicon carbide through the epoxy resin adhesive layer to complete the carrying of silicon carbide.
[0054] In summary, the carrying fixture body and the clamp provided by this utility model are slidably connected by a slide rail, and magnets are set on both sides of the slide rail, which can ensure the accuracy and stability of the position and improve the efficiency of changing parts.
[0055] The applicant declares that the above description is only a specific embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Those skilled in the art should understand that any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present utility model fall within the protection and disclosure scope of the present utility model.
Claims
1. A magnetically assisted clamping silicon carbide carrying fixture, characterized in that, The silicon carbide carrying fixture includes a ferromagnetic carrying fixture body and a clamp for holding the carrying fixture body. The clamp includes a fixed frame; The fixed frame includes a first fixed frame and a second fixed frame arranged parallel to each other. A ferromagnetic adsorption plate is provided above the first fixed frame and the second fixed frame; The first fixed frame, the second fixed frame, and the adsorption plate constitute a slide rail with a groove-shaped cross section, and the extension direction of the slide rail is parallel to the axial direction of the fixed frame. The fixed frame has receiving slots on the side near the slide rail. Magnets are installed in the receiving slots. The extension direction of the magnets is parallel to the extension direction of the slide rail. The upper edge of the magnets is magnetically connected to the adsorption plate. The upper part of the carrying fixture body is provided with a protrusion that matches the shape of the slide rail, and the carrying fixture body is slidably connected to the slide rail of the clamp through the protrusion.
2. The magnetically assisted clamping silicon carbide carrying fixture according to claim 1, characterized in that, The contact surface between the magnet and the fixed frame is provided with a first positioning pin; The magnet is connected to the fixed frame on the same side via a first positioning pin.
3. The magnetically assisted clamping silicon carbide carrying fixture according to claim 2, characterized in that, The fixed frame is provided with a first through hole that matches the first positioning pin on the same side; The first locating pin passes through the first through hole and is locked by the adjusting nut.
4. The magnetically assisted clamping silicon carbide carrying fixture according to claim 3, characterized in that, The number of the first locating pins on the same magnet is at least two.
5. The magnetically assisted clamping silicon carbide carrying fixture according to claim 4, characterized in that, A second through hole is provided between adjacent first through holes.
6. The magnetically assisted clamping silicon carbide carrying fixture according to claim 5, characterized in that, The second through hole is provided with internal threads.
7. The magnetically assisted clamping silicon carbide carrying fixture according to claim 6, characterized in that, A second positioning pin is provided inside the second through hole; The second locating pin is threadedly connected to the second through hole; The tail of the second locating pin passes through the second through hole and comes into contact with the magnet.
8. The magnetically assisted clamping silicon carbide carrying fixture according to claim 1, characterized in that, The slide rail has an inverted trapezoidal groove in cross-section.
9. The magnetically assisted clamping silicon carbide carrying fixture according to claim 1, characterized in that, In the carrying fixture body, the protruding bottom is connected to the silicon carbide carrying platform.
10. The magnetically assisted clamping silicon carbide carrying fixture according to claim 9, characterized in that, The silicon carbide carrier platform is bonded to silicon carbide through an epoxy resin adhesive layer.