A milling fixture for machining silicon nitride ceramic structural parts

Abstract

This utility model discloses a milling fixture for machining silicon nitride ceramic structural parts, belonging to the field of milling fixtures. The milling fixture includes a base and a panel detachably connected to the base. This utility model uses a first driving component to adjust the position of the clamping blocks, enabling the clamping and positioning of silicon nitride ceramic structural parts of different sizes. Simultaneously, the cross-shaped design of the clamping blocks can adapt to workpieces of different shapes and sizes, whether flat, circular, or irregular, achieving stable clamping. Compared to the jaws in a three-jaw chuck, additional measures may be needed to enhance stability when dealing with complex shapes or large-sized workpieces. Furthermore, by utilizing a second driving component and an arc-shaped rack, the arc-shaped rack can rotate from zero to 180 degrees along a preset axis, providing a better machining angle for the workpiece and improving machining flexibility.

Description

Technical Field

[0001] This utility model relates to the field of milling fixture technology, and in particular to a milling fixture for machining silicon nitride ceramic structural parts. Background Technology

[0002] Silicon nitride ceramics are inorganic ceramic materials that do not shrink during sintering. Silicon nitride has very high strength, especially hot-pressed silicon nitride, which is one of the hardest substances in the world. It has properties such as high strength, low density, and high temperature resistance. When milling silicon nitride ceramic structural parts, they need to be positioned by milling fixtures.

[0003] Existing milling fixtures are not convenient for fixing silicon nitride ceramic structural parts of different sizes, which reduces the machining effect of silicon nitride ceramic structural parts and makes it difficult to adjust the angle of the workpiece, thus limiting the diversity and flexibility of machining silicon nitride ceramic structural parts. Utility Model Content

[0004] The purpose of this invention is to solve the problem that existing milling fixtures are not convenient for adjusting the angle of silicon nitride ceramic structural parts, and to propose a milling fixture for machining silicon nitride ceramic structural parts.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A milling fixture for machining silicon nitride ceramic structural parts includes a base and a panel detachably connected to the base, and further includes: at least two sets of clamping blocks slidably connected to the panel, the clamping blocks having a tendency to move away from the center of the panel, wherein a first driving member is provided on the base, and when the first driving member rotates, the clamping blocks converge towards the center of the panel; and a mounting frame, wherein an arc rack is fixedly connected to the base, and a second driving member is provided on the mounting frame for driving the arc rack to rotate.

[0007] For adjusting the position of the clamping block, preferably, the first driving component includes a first motor fixedly connected to the base, a circular plate fixedly connected to the output end of the first motor, wherein a guide block is fixedly connected to the side of the circular plate away from the output end of the first motor, and a pulley is rotatably connected to the clamping block, the pulley being in contact with the inner arc surface of the guide block.

[0008] To further improve the stability of the circular plate's rotation, a guide frame is fixedly connected inside the base, and a sliding ring that is fixedly connected to the circular plate is rotatably connected inside the guide frame.

[0009] In order to adjust the processing angle of the silicon nitride ceramic structural component, preferably, the second driving component includes a second motor fixedly mounted on the mounting bracket, the output end of the second motor is fixedly connected to a transmission rod, and a gear is fixedly connected to the surface of the transmission rod, the gear meshing with an arc rack.

[0010] To limit the movement of the arc rack, preferably, a limiting wheel is rotatably connected inside the mounting bracket, and the side of the limiting wheel closest to the arc rack contacts the arc rack.

[0011] To facilitate fixing the mounting bracket, preferably, the surface of the mounting bracket is provided with a groove, and a through hole is provided in the groove.

[0012] To secure the second motor, preferably, a positioning ring is fixedly fitted onto the surface of the second motor, and the side of the positioning ring closest to the mounting bracket is fixedly connected to the mounting bracket.

[0013] In order to position silicon nitride ceramic structural parts of different sizes, preferably, the clamping block has a limiting groove on the side near the center of the panel. The limiting groove is arc-shaped and arranged in a stepped manner.

[0014] To avoid damage when clamping silicon nitride ceramic structural components, preferably, a protective pad is fixedly connected inside the limiting groove, and the protective pad is made of rubber.

[0015] To reset the clamping block, preferably, a spring is also included, with both ends of the spring fixedly connected to the panel and the clamping block respectively, and a guide rod is provided along the spring axis.

[0016] Compared with the prior art, this utility model provides a milling fixture for machining silicon nitride ceramic structural parts, which has the following beneficial effects:

[0017] 1. The milling fixture for processing silicon nitride ceramic structural parts uses a first motor to drive a circular plate to rotate, causing four guide blocks to press against four pulleys, which can quickly adjust the position of the clamping blocks, thereby improving the installation efficiency of silicon nitride ceramic structural parts.

[0018] 2. The milling fixture used for machining silicon nitride ceramic structural parts has a protective pad made of rubber material, which can protect the silicon nitride ceramic structural parts and prevent damage to the surface of the silicon nitride ceramic structural parts during the clamping process.

[0019] All parts not described in this device are the same as or can be implemented using existing technologies. This utility model can clamp and position silicon nitride ceramic structural parts of different sizes by setting a first driving component to adjust the position of the clamping block. At the same time, the cross-shaped clamping block can adapt to workpieces of different shapes and sizes, whether flat, circular or irregular, and can achieve stable clamping. Compared with the jaws in a three-jaw chuck, when facing complex shapes or large-sized workpieces, additional measures may be needed to enhance stability. Furthermore, by using a second driving component and an arc rack, since the arc rack is half a circle, when the second driving component drives the arc rack to rotate, the arc rack can rotate from zero to one hundred and eighty degrees along a preset axis, giving the workpiece a better processing angle and improving processing flexibility. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of a milling fixture for machining silicon nitride ceramic structural parts proposed in this utility model;

[0021] Figure 2 This is a structural cross-sectional view of a milling fixture base and panel for machining silicon nitride ceramic structural parts proposed in this utility model;

[0022] Figure 3 The right view shows the structure of a milling fixture for machining silicon nitride ceramic structural parts proposed in this utility model.

[0023] Figure 4 This is a rear view of the structure of a milling fixture panel and pulley for machining silicon nitride ceramic structural parts proposed in this utility model;

[0024] Figure 5 This utility model proposes a milling fixture for machining silicon nitride ceramic structural parts. Figure 4 Enlarged view of the structure at point A in the middle;

[0025] Figure 6 This is an exploded sectional view of a milling fixture base, a first motor, and a circular plate for machining silicon nitride ceramic structural parts, as proposed in this utility model.

[0026] Figure 7 This is a cross-sectional view of a milling fixture circular plate and sliding ring for machining silicon nitride ceramic structural parts proposed in this utility model;

[0027] Figure 8 This is a schematic diagram of the structure of a milling fixture with an arc rack and a second drive component for machining silicon nitride ceramic structural parts, as proposed in this utility model.

[0028] In the diagram: 1. Base; 2. Panel; 3. First driving component; 301. First motor; 302. Circular plate; 303. Guide block; 304. Sliding ring; 4. Clamping block; 5. Circular arc rack; 6. Second driving component; 601. Gear; 602. Mounting bracket; 603. Second motor; 604. Transmission rod; 605. Limiting wheel; 606. Positioning ring; 7. Pulley; 8. Guide frame; 9. Limiting groove; 10. Protective pad; 11. Spring. Detailed Implementation

[0029] 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.

[0030] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., 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.

[0031] Example:

[0032] Reference Figures 1-8 A milling jig for machining silicon nitride ceramic structural parts includes a base 1 and a panel 2 detachably connected to the base 1. It also includes at least two sets of clamping blocks 4 for clamping the silicon nitride ceramic structural parts, slidably connected to the panel 2, with the clamping blocks 4 tending to move away from the center of the panel 2. A first driving member 3 is provided on the base 1; when the first driving member 3 rotates, the clamping blocks 4 converge towards the center of the panel 2. A mounting frame 602 is also included, wherein two arc-shaped racks 5 are fixedly connected to the base 1, and a second driving member 6 is provided on the mounting frame 602 for driving the arc-shaped racks 5 to rotate. The arc-shaped racks 5 are half-circles.

[0033] Specifically, by setting the position adjustment of the clamping block 4 by the first driving component 3, it is possible to clamp and position silicon nitride ceramic structural parts of different sizes. At the same time, the cross-shaped design of the clamping block 4 can adapt to workpieces of different shapes and sizes, whether flat, circular or irregular, and can achieve stable clamping. Compared with the jaws in a three-jaw chuck, when facing complex shapes or large-sized workpieces, additional measures may be needed to enhance stability. Furthermore, by using the cooperation of the second driving component 6 and the arc rack 5, since the arc rack 5 is half a circle, when the second driving component 6 drives the arc rack 5 to rotate, the arc rack 5 can rotate from zero degrees to one hundred and eighty degrees along the preset axis, so that the workpiece has a better processing angle and improves processing flexibility.

[0034] The first driving component 3 includes a first motor 301 fixedly connected to the base 1. A circular plate 302 is fixedly connected to the output end of the first motor 301. A guide block 303 is fixedly connected to the side of the circular plate 302 away from the output end of the first motor 301. A pulley 7 is rotatably connected to the clamping block 4. The pulley 7 is in contact with the inner arc surface of the guide block 303.

[0035] Specifically, by driving the circular plate 302 to rotate through the first motor 301, the four guide blocks 303 press against the four pulleys 7, which can quickly adjust the position of the clamping block 4, thereby improving the installation efficiency of the silicon nitride ceramic structural components.

[0036] The inner wall of the base 1 is fixedly connected to the guide frame 8, and the guide frame 8 is rotatably connected to the sliding ring 304 which is fixedly connected to the circular plate 302.

[0037] Specifically, by setting the guide frame 8 and the sliding ring 304 to work together, when the output end of the first motor 301 drives the circular plate 302 to rotate, the sliding ring 304 rotates inside the guide frame 8, which can improve the stability of the rotation of the circular plate 302 and prevent its position or angle from shifting during rotation, thus affecting the movement of the clamping block 4.

[0038] The second driving component 6 includes a second motor 603 fixedly mounted on the mounting bracket 602. The output end of the second motor 603 is fixedly connected to a transmission rod 604. A gear 601 is fixedly connected to the surface of the transmission rod 604. The gear 601 meshes with the arc rack 5.

[0039] Specifically, by driving the gear 601 to rotate through the second driving component 6, the arc rack can rotate from zero to 180 degrees along the preset axis, giving the workpiece a better processing angle and improving processing flexibility.

[0040] The mounting bracket 602 is rotatably connected to a limiting wheel 605 via a bearing. The side of the limiting wheel 605 closest to the arc rack 5 is in contact with the arc rack 5.

[0041] Specifically, by setting the limit wheel 605, the arc rack 5 can be limited, thereby improving the stability of the rotation adjustment of the arc rack 5.

[0042] The surface of the mounting bracket 602 has grooves, which are symmetrically distributed at the four corners of the mounting bracket 602, and through holes are formed in the grooves.

[0043] Specifically, the groove and through hole work together to limit the position of the mounting bracket 602, thereby facilitating the worker to fix and install the mounting bracket 602.

[0044] The second motor 603 is fixedly fitted with a positioning ring 606, and the side of the positioning ring 606 near the mounting bracket 602 is fixedly connected to the surface of the mounting bracket 602 by bolts.

[0045] Specifically, by setting a positioning ring 606, the second motor 603 can be fixed, thereby preventing the second motor 603 from falling off during use.

[0046] A limiting groove 9 is provided on the side of the clamping block 4 near the center of the panel 2. The limiting groove 9 is arc-shaped, and there are four limiting grooves 9 arranged in a stepped manner.

[0047] Specifically, the stepped limiting groove 9 can clamp and position silicon nitride ceramic structural parts of different sizes, thereby improving the installation efficiency of silicon nitride ceramic structural parts.

[0048] A protective pad 10 is fixedly connected to the inner side of the limiting groove 9. The protective pad 10 is made of rubber.

[0049] Specifically, the rubber protective pad 10 can protect the silicon nitride ceramic structural parts and prevent damage to the surface of the silicon nitride ceramic structural parts during clamping.

[0050] It also includes a spring 11, the two ends of which are fixedly connected to the panel 2 and the clamping block 4 respectively, and a guide rod is provided along the axis of the spring 11.

[0051] Specifically, by setting the spring 11, not only can the clamping block 4 be limited, but the clamping block 4 can also be reset, thereby improving the assembly and disassembly efficiency of silicon nitride ceramic structural components.

[0052] Working principle: In use, the operator fixes the mounting bracket 602 on the milling lathe, then places the silicon nitride ceramic structural component close to the center of panel 2, and starts the first motor 301 using an external control switch. The output end of the first motor 301 drives the circular plate 302 to rotate. When the circular plate 302 rotates, it drives the four guide blocks 303 to rotate around the center of the circular plate 302. When the guide blocks 303 rotate, they press the pulley 7, causing the pulley 7 to drive the clamping block 4 to press the spring 11. After the clamping block 4 is pressed and moves towards the center of panel 2, it can press the silicon nitride ceramic component. The structural components are clamped and positioned, and the stepped limiting grooves 9 on the surface of the clamping block 4 can clamp silicon nitride ceramic structural components of different sizes. During milling, the operator starts the second motor 603 using an external control switch. The output end of the second motor 603 drives the transmission rod 604 to rotate. When the transmission rod 604 rotates, it drives two gears 601 to rotate. When the two gears 601 rotate, they drive two arc racks 5 to rotate, which can adjust the angle of the base 1 and the silicon nitride ceramic structural components, thus facilitating multi-angle milling.

[0053] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A milling jig for machining a silicon nitride ceramic structural part, comprising a base (1) and a face plate (2) detachably connected to the base (1), characterized in that, Also includes: At least two sets of clamping blocks (4) are slidably connected to the panel (2), and the clamping blocks (4) tend to move away from the center of the panel (2). The base (1) is provided with a first driving member (3). When the first driving member (3) rotates, the clamping block (4) converges toward the center of the panel (2). Mounting bracket (602), The base (1) is fixedly connected to a circular arc rack (5), and the mounting bracket (602) is provided with a second driving member (6) for driving the circular arc rack (5) to rotate.

2. A milling jig for machining a silicon nitride ceramic structure according to claim 1, wherein The first driving component (3) includes a first motor (301) fixedly connected to the base (1), and a circular plate (302) is fixedly connected to the output end of the first motor (301). Among them, a guide block (303) is fixedly connected to the side of the circular plate (302) away from the output end of the first motor (301), and a pulley (7) is rotatably connected to the clamping block (4), and the pulley (7) is in contact with the inner arc surface of the guide block (303).

3. The milling jig for processing a silicon nitride ceramic structural member according to Claim 1, wherein A guide frame (8) is fixedly connected inside the base (1), and a sliding ring (304) that is fixedly connected to the circular plate (302) is rotatably connected inside the guide frame (8).

4. The milling jig for processing a silicon nitride ceramic structural member according to Claim 1, wherein The second driving component (6) includes a second motor (603) fixedly mounted on the mounting bracket (602). The output end of the second motor (603) is fixedly connected to a transmission rod (604). A gear (601) is fixedly connected to the surface of the transmission rod (604). The gear (601) meshes with the arc rack (5).

5. A milling fixture for machining silicon nitride ceramic structural parts according to claim 4, characterized in that, The mounting bracket (602) is rotatably connected to a limiting wheel (605), and the limiting wheel (605) is in contact with the arc rack (5) on the side near the arc rack (5).

6. A milling fixture for machining silicon nitride ceramic structural parts according to claim 4, characterized in that, The mounting bracket (602) has a groove on its surface and a through hole in the groove.

7. A milling fixture for machining silicon nitride ceramic structural parts according to claim 4, characterized in that, The second motor (603) is fixedly fitted with a positioning ring (606), and the positioning ring (606) is fixedly connected to the mounting bracket (602) on the side near the mounting bracket (602).

8. A milling fixture for machining silicon nitride ceramic structural parts according to claim 1, characterized in that, The clamping block (4) has a limiting groove (9) on one side near the center of the panel (2). The limiting groove (9) is arc-shaped and arranged in a stepped manner.

9. A milling fixture for machining silicon nitride ceramic structural parts according to claim 8, characterized in that, A protective pad (10) is fixedly connected inside the limiting groove (9), and the protective pad (10) is made of rubber.

10. A milling fixture for machining silicon nitride ceramic structural parts according to claim 1, characterized in that, It also includes a spring (11), the two ends of which are fixedly connected to the panel (2) and the clamp (4) respectively, and a guide rod is provided along the axis of the spring (11).

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