Multi-angle clamp for milling machine

Abstract

The utility model relates to the technical field of milling machine equipment, in particular to a multi-angle clamp for a milling machine, which comprises a planar rotating platform, the planar rotating platform is arranged in the milling machine, an inclined platform is arranged on the rotating surface of the planar rotating platform, and a clamping component is mounted on the inclined surface of the inclined platform; a workpiece on the clamping assembly can be subjected to plane angle rotating adjustment through the plane rotating platform; the pitching angle is rotationally adjusted through the inclined platform; the clamping end of the clamping assembly is provided with a special-shaped clamping head. The special-shaped clamping head is connected with the clamping head adjusting assembly, the special-shaped clamping head is rotationally arranged at the clamping end through the clamping head adjusting assembly, and the rotating direction of the special-shaped clamping head is perpendicular to the clamping direction of the clamping assembly, so that the clamping angle of the special-shaped workpiece is adjusted. According to the multi-angle clamping device, the technical problems of the multi-direction angle adjusting function of a clamped workpiece and the multi-angle clamping function of a special-shaped workpiece are solved.

Description

Technical Field

[0001] This utility model relates to the field of milling machine equipment technology, and more specifically, to a multi-angle fixture for milling machines. Background Technology

[0002] Milling machine fixtures are devices used to fix workpieces during milling operations. Their function is to ensure machining accuracy, improve efficiency, and ensure operational safety. The type and structure of fixtures vary depending on the different machining requirements. Generally, flat-jaw vises (machine vises) are used, suitable for clamping square, rectangular, or regular-shaped workpieces; or pressure plate fixtures, which directly fix the workpiece to the milling machine table using bolts and pressure plates, suitable for large or irregular workpieces; there are also pneumatic fixtures or vacuum suction fixtures, etc., to achieve clamping and fixing of different types of workpieces.

[0003] However, traditional milling machine fixtures (such as flat-jaw vises and indexing heads) can usually only achieve angle adjustment on a single plane. For workpieces that need to be continuously machined at multiple angles, repeated disassembly and reassembly or auxiliary tooling is required, which is inefficient and difficult to guarantee accuracy.

[0004] A Chinese utility model patent, titled "A Fixture with Fixed Performance for Easy Angle Adjustment" and with publication number CN214816657U, includes a base plate with an adjusting component. The adjusting component contains a worm gear, and a rotating mechanism that cooperates with the adjusting component is used to adjust the angle. The rotating mechanism includes an arc block, the arc surface of which engages with the worm gear. This utility model achieves adjustable fixture angle by using an adjusting component that engages with an arc block with worm gears, thereby enabling adjustment of the workpiece angle.

[0005] Although this utility model can adjust the angle of the clamped workpiece, the adjustment angle is still only in one direction and cannot meet the needs of adjustment in more directions. Moreover, it is difficult to achieve the angle adjustment function when clamping irregularly shaped workpieces. Utility Model Content

[0006] The purpose of this application is to provide a multi-angle fixture for milling machines, which solves the technical problems of angle adjustment function for clamping workpieces in multiple directions and multi-angle clamping function for irregularly shaped workpieces.

[0007] To solve the above-mentioned technical problems, the solution adopted in this application is as follows:

[0008] A multi-angle fixture for a milling machine includes a planar rotary platform.

[0009] Preferably, the planar rotary platform is disposed inside the milling machine, and an inclined platform is disposed on the rotating surface of the planar rotary platform, and a clamping assembly is mounted on the inclined surface of the inclined platform.

[0010] Preferably, the workpiece on the clamping assembly can be rotated in planar angle using a planar rotation platform and in pitch angle using a tilting platform.

[0011] Preferably, the clamping end of the clamping assembly is provided with an irregularly shaped clamping head.

[0012] Preferably, the irregular-shaped clamping head is connected to the clamping head adjustment assembly, and the irregular-shaped clamping head is rotatably mounted at the clamping end through the clamping head adjustment assembly. The rotation direction of the irregular-shaped clamping head is perpendicular to the clamping direction of the clamping assembly.

[0013] Preferably, the clamping assembly includes two positioning clamps, which are fixedly installed on an inclined surface. The clamping surfaces of the two positioning clamps are vertically arranged and respectively abut against different surfaces of the workpiece.

[0014] Preferably, each positioning clamping plate has a corresponding sliding base in the direction of its clamping surface. The sliding base is slidably disposed on the inclined surface and the sliding direction is towards the clamping surface of the positioning clamping plate.

[0015] Preferably, the sliding base is rotatably connected to one end of the screw, and the other end of the screw is threaded onto the fixed seat, which is fixed on the inclined surface.

[0016] Preferably, the irregularly shaped clamping head includes a cavity plate, which is mounted on the sliding surface of the sliding base. A cavity is provided inside the cavity plate, and one side of the cavity is open, with the opening facing the clamping surface of the positioning clamping plate. A rotating shaft is fixed inside the cavity, and an arc-shaped clamping claw is rotatably mounted on the rotating shaft, with the arc-shaped clamping claw swinging in the direction of the opening.

[0017] Preferably, the arc-shaped gripper has a C-shaped structure, with the two ends of the C-shaped structure abutting against different surfaces of the workpiece.

[0018] Preferably, the outer arc surface of the arc-shaped gripper and the cavity surface of the cavity plate are respectively connected to the two elastic ends of the elastic component, and the elastic components are respectively symmetrically arranged at the two arc-shaped ends of the arc-shaped gripper.

[0019] Preferably, the clamping head adjustment assembly includes a rotating column, a cavity plate is fixedly connected to one end of the rotating column, the rotating column passes through the upper part of the sliding base and is rotatably mounted on the sliding base, and a handle is fixedly connected to the other end of the rotating column.

[0020] Preferably, a threaded hole is vertically provided on the top of the sliding base, the threaded hole is connected to the through position of the rotating column, and a fixing bolt is matched with the thread inside the threaded hole.

[0021] Preferably, the planar rotary platform includes a base, which is installed inside the milling machine. A worm gear is rotatably mounted on the base, with the worm gear's axial direction being vertical. A planar mounting table is coaxially mounted above the worm gear. The worm gear teeth on the side of the worm gear mesh with the teeth on the worm shaft, which is rotatably mounted on the base.

[0022] Preferably, the base is also threaded with a locking element that abuts against the side of the worm gear.

[0023] Preferably, the inclined platform includes a mounting base, which is coaxially fixed on the surface of the planar mounting platform. A rotating rod is inserted through the mounting base and is rotatably mounted on the mounting base. The insertion end of the rotating rod is located inside the mounting base, and a worm gear is coaxially fixedly connected to the insertion end.

[0024] Preferably, a sliding seat is fixedly connected to the upper part of the mounting base, an arc-shaped sliding groove is provided in the sliding seat, and a swing platform is rotatably installed on the surface of the arc-shaped sliding groove. The swing platform has a semi-cylindrical structure.

[0025] Preferably, a ring of worm gear teeth is provided on the cylindrical surface of the swing platform, and the arc-shaped groove space in the slide seat is connected to the through position of the rotating rod in the mounting seat. The rotating worm gear meshes with the worm gear teeth on the cylindrical surface of the swing platform.

[0026] Preferably, the slide seat is also threaded with a locking bolt, and the threaded end of the locking bolt abuts against the cylindrical surface of the swing platform.

[0027] The technical solution of this application has at least the following advantages and beneficial effects:

[0028] In this invention, by setting a planar rotary platform and a tilting platform inside the milling machine, the clamped workpiece can be rotated 360° using the planar rotary platform; and can also be rotated -60° to +60° using the tilting platform, thereby realizing the multi-directional angle adjustment function of the clamped workpiece.

[0029] In this invention, an irregularly shaped clamping head is provided at the clamping end of the clamping component for clamping irregularly shaped workpieces; and a clamping head adjustment component is installed at the irregularly shaped clamping head so that the clamping head adjustment component can change its clamping angle on the irregularly shaped workpiece to match the stable clamping position of different irregularly shaped workpieces, so that the irregularly shaped clamping head can be compatible with clamping more workpieces with irregular structures. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the structure of this utility model.

[0031] Figure 2 This is a structural schematic diagram of the present invention from another angle.

[0032] Figure 3 This is a cross-sectional view of the worm gear in this utility model.

[0033] Figure 4 This is a cross-sectional view of the inclined platform in this utility model.

[0034] Figure 5 This is a front view structural diagram of the present invention.

[0035] Figure 6 This is a top view of the structure of this utility model.

[0036] Figure 7 This is an enlarged structural diagram of A in this utility model.

[0037] Figure 8 This is an enlarged structural diagram of B in this utility model.

[0038] In the diagram: 1-Plane rotating platform, 101-Base, 102-Worm gear, 103-Worm one, 104-Turntable, 105-Locking component, 106-Plane mounting platform, 107-Scale, 2-Inclined platform, 201-Mounting seat, 202-Rotating rod, 203-Worm two, 204-Swing platform, 205-Worm gear tooth, 206-Slide seat, 207-Swing groove, 208-Locking bolt component, 3-Clamping assembly, 301-Positioning clamping plate, 302-Sliding base, 303-Screw, 304-Fixed seat, 4-Irregular shaped clamping head, 401-Cavity plate, 402-Arc-shaped gripper, 403-Rotating shaft, 404-Elastic component, 5-Clamping head adjusting assembly, 501-Rotating column, 502-Handle, 503-Fixed bolt component. Detailed Implementation

[0039] 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.

[0040] It should be noted that similar reference numerals and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. The terms "center," "upper," "lower," "inner," and "outer," indicating orientation or positional relationships based on the orientation or positional relationships shown in the figures, or the orientation or positional relationships commonly used when the product is in use, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed or operated in a specific orientation, and therefore should not be construed as a limitation on this application. It should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," and "connect" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two elements. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0041] Example 1

[0042] Please refer to Figures 1-8 This utility model provides a multi-angle fixture for a milling machine, including a planar rotary platform 1, which is fixed inside the milling machine. An inclined platform 2 is fixed on the rotating surface of the planar rotary platform 1, and a clamping assembly 3 is installed on the inclined surface of the inclined platform 2 for clamping the workpiece to be processed. The workpiece on the clamping assembly 3 can be rotated 360° by the planar rotary platform 1. The workpiece on the clamping assembly 3 can also be rotated from -60° to +60° by the tilting platform 2.

[0043] The angle adjustment structure in the planar rotating platform 1 and the inclined platform 2 is set as a worm gear structure. The worm gear structure is connected to the rotating platform. When the worm is rotated by personnel or driving components, the rotating platform can be rotated through the worm gear structure, thereby realizing the angle rotation adjustment of the planar rotating platform 1 and the inclined platform 2.

[0044] Furthermore, the clamping end of the clamping component 3 is also provided with an irregular clamping head 4 for clamping irregular workpieces; the irregular clamping head 4 is connected to the clamping head adjustment component 5, and the clamping head adjustment component 5 can adjust the clamping position of the irregular clamping head 4 on the irregular workpiece by rotating the irregular clamping head 4, so that the irregular clamping head 4 can be compatible with clamping more workpieces with irregular structures.

[0045] The clamping assembly 3 includes a positioning clamping plate 301, a sliding base 302, a screw 303, and a fixing base 304.

[0046] For specific details, please refer to Figure 6 The inclined surface of the inclined platform 2 is set as the processing platform surface for milling by the milling machine. Two positioning clamping plates 301 are fixedly installed on the inclined surface. The clamping surfaces of the two positioning clamping plates 301 are set vertically and the clamping surfaces abut against the irregular workpiece. The two perpendicular clamping surfaces position the two planes of the workpiece.

[0047] Each positioning clamping plate 301 has a corresponding sliding base 302 positioned on its clamping surface. The sliding base 302 is slidably mounted on the inclined surface and can slide towards the clamping surface of the positioning clamping plate 301, thereby clamping the workpiece with the positioning clamping plate 301. The clamping surfaces of the two positioning clamping plates 301 and the two sliding bases 302 can clamp the workpiece on all four sides, achieving positioning and fixing of the workpiece.

[0048] The sliding base 302 is connected to one end of the screw 303 (the two are connected by a bearing, so that the sliding base 302 will not rotate when the screw 303 rotates). The other end of the screw 303 is threaded onto the fixed seat 304, which is fixed to the inclined surface. When the screw 303 is rotated, it moves through the thread on the fixed seat 304, thereby causing the sliding base 302 to move towards the positioning clamping plate 301, thus achieving clamping.

[0049] The positioning base of the clamping assembly 3 is equipped with a non-circular clamping head 4, which includes a cavity plate 401, an arc-shaped gripper 402, a rotating shaft 403, and an elastic element 404.

[0050] For specific details, please refer to Figure 7 A cavity plate 401 is installed on the sliding surface of the sliding base 302. A cavity is provided inside the cavity plate 401. One side of the cavity is open, and the opening direction faces the clamping surface of the positioning clamp plate 301 corresponding to the positioning base. A rotating shaft 403 is fixed inside the cavity. An arc-shaped gripper 402 is rotatably mounted on the rotating shaft 403. The arc-shaped gripper 402 swings along the opening direction.

[0051] The arc-shaped gripper 402 has a C-shaped structure. When the sliding base 302 moves towards the positioning clamping plate 301, the arc-shaped gripper 402 can hold the irregular surface of the irregularly shaped workpiece. Furthermore, its swingable structure allows it to adapt to larger angles on the irregular surface of the workpiece. Moreover, the C-shaped structure of the arc-shaped gripper 402 allows the concave surface (inner arc) of the C-shape to avoid some of the protrusions of the irregularly shaped workpiece when it holds the surface, improving the adaptability to the workpiece.

[0052] When the arc-shaped gripper 402 rotates, the outer arc surface of the arc-shaped gripper 402 will be blocked by the cavity wall of the cavity plate 401, so that the arc-shaped gripper 402 can only swing within the cavity plate 401 at a certain angle. This reduces the possibility of the workpiece surface coming into contact with the outer arc end of the arc-shaped gripper 402 due to the excessive swing angle of the arc-shaped gripper 402, making it impossible to clamp.

[0053] In addition, the outer arc surface of the arc-shaped gripper 402 and the cavity surface of the cavity plate 401 are also fixedly connected to the elastic ends of the elastic components. The elastic components are symmetrically arranged at the arc-shaped ends of the arc-shaped clamping plate. The elastic components are set as springs. When the arc-shaped gripper 402 abuts against and clamps the irregular workpiece, the elastic components will provide elastic force to the arc-shaped gripper 402. After the arc-shaped gripper 402 clamps the irregular workpiece, when the sliding base 302 continues to move, the arc-shaped gripper 402 and the positioning clamping plate 301 are clamped together. The arc-shaped gripper 402 receives elastic force and always abuts against the surface of the irregular workpiece. Through its arc-shaped ends, it is subjected to the extrusion force of different surfaces of the irregular workpiece. The extrusion force and the elastic force interact to drive the arc-shaped gripper 402 to swing, thereby adapting to change the clamping angle of the arc-shaped gripper 402.

[0054] It is worth noting that when the arc-shaped gripper 402 clamps a regular-shaped workpiece, the two arc-shaped ends of the arc-shaped gripper 402 are generally located on the same surface of the workpiece. At this time, the arc-shaped gripper 402 does not swing, and the arc-shaped gripper 402 and the positioning clamping plate 301 can already achieve normal clamping function.

[0055] The irregularly shaped clamping head 4 is also connected to the clamping head adjustment assembly 5, which includes a rotating column 501, a handle 502, and a fixing bolt 503.

[0056] For specific details, please refer to Figure 8 The cavity plate 401 is fixedly connected to one end of the rotating column 501. The rotating column 501 passes through the upper part of the sliding base 302 and is rotatably mounted on the sliding base 302. The other end of the rotating column 501 is fixedly connected to a handle 502. When the handle 502 is manually rotated, the arc-shaped gripper 402 inside the cavity plate 401 can be rotated through the rotating column 501. The rotation direction is perpendicular to the sliding direction of the sliding base 302.

[0057] A threaded hole is vertically provided on the top of the sliding base 302. The threaded hole is connected to the insertion position of the rotating column 501. A fixing bolt 503 (i.e., screw) is matched with the thread inside the threaded hole. When the handle 502 is manually turned, the arc-shaped gripper 402 is rotated at a certain angle, and the fixing bolt 503 is tightened. This causes the bottom of the fixing bolt 503 to abut against and press the surface of the rotating column 501, thereby limiting the rotation of the rotating column 501 through friction, and fixing the rotation position of the arc-shaped gripper 402.

[0058] When the arc-shaped gripper 402 clamps different irregularly shaped workpieces, the arc-shaped ends of the non-rotating arc-shaped gripper 402 can only clamp and abut at two fixed points. When facing some irregularly shaped workpieces with excessively long horizontal length and irregular shapes at the top and bottom, the horizontally clamping arc-shaped gripper 402 has difficulty maintaining the stability of the workpiece after clamping it (irregular top and bottom, easy to swing). Therefore, at this time, the handle 502 can be rotated to rotate the arc-shaped gripper 402, so that the clamping angle of the arc-shaped gripper 402 also changes (for example, it becomes vertical clamping, clamping the irregularly shaped workpieces with irregular shapes at the top and bottom), so as to adapt to clamping more types of irregularly shaped workpieces.

[0059] Example 2

[0060] To enable the parallel angle adjustment function of the planar rotary platform 1 for the clamped workpiece, please refer to... Figure 2 and Figure 3 In this embodiment, the planar rotating platform 1 includes a base 101, a worm gear 102, a worm 103, a turntable 104, a locking element 105, a planar mounting platform 106, and a scale 107.

[0061] Specifically, the base 101 is fixedly installed inside the milling machine to provide support for the entire fixture structure. A worm gear 102 is rotatably mounted on the base 101. The axial direction of the worm gear 102 is vertical. A flat mounting table 106 is coaxially fixedly mounted above the worm gear 102. The worm gear teeth 205 on the side of the worm gear 102 mesh with the teeth on the worm gear 103. The worm gear 103 is rotatably mounted on the base 101. A turntable 104 is fixed to one end of the worm gear 103.

[0062] When it is necessary to adjust the plane angle of the clamped workpiece, the turntable 104 is manually rotated, and the worm gear structure drives the plane mounting table 106 to rotate along the plane to adjust the plane angle.

[0063] The flat mounting platform 106 has a scale 107 on its side and a corresponding ruler on its base 101. When the flat mounting platform 106 rotates, the operator can sense the adjustment of the plane angle by the change of the scale 107, which further improves the angle adjustment accuracy when manually adjusting the plane rotation platform 1.

[0064] In addition, a locking element 105 is threaded through the base 101. The locking element 105 is a bolt. After the plane angle is adjusted, the locking element 105 is manually rotated so that the threaded end of the locking element 105 abuts against the side of the worm gear 102. The frictional resistance prevents the worm gear 102 from rotating, reducing the occurrence of spontaneous rotation of the worm gear 102 and maintaining the adjustment accuracy.

[0065] Example 3

[0066] To enable the tilting platform 2 to adjust the pitch angle of the clamped workpiece, please refer to... Figure 4 and Figure 5 In this embodiment, the tilting platform 2 includes a mounting base 201, a rotating rod 202, a worm gear 203, a swing platform 204, a worm gear tooth 205, a sliding groove seat 206, a swing groove 207, and a locking bolt 208.

[0067] Specifically, the mounting base 201 is coaxially fixed on the surface of the planar mounting platform 106. A rotating rod 202 is inserted inside the mounting base 201. The rotating rod 202 is rotatably mounted on the mounting base 201. The two ends of the rotating rod 202 are a through end and a handle 502 end. The handle 502 end is located outside the mounting base 201, making it easy for workers to hold and drive the rotating rod 202 to rotate. The through end is located inside the mounting base 201, and a worm gear 203 is coaxially fixedly connected to the through end.

[0068] A sliding base 206 is fixedly connected to the upper part of the mounting base 201. An arc-shaped sliding groove is provided inside the sliding base 206. A swing platform 204 is rotatably mounted on the surface of the arc-shaped sliding groove. The swing platform 204 has a semi-cylindrical structure, and a slider is provided on its cylindrical surface. The slider engages with the sliding groove in the arc-shaped groove, allowing the swing platform 204 to slide smoothly within the arc-shaped sliding groove via the slider on its cylindrical surface. The platform surface of the swing platform 204 opposite to the cylindrical surface is an inclined surface used for mounting the clamping assembly 3.

[0069] The swing platform 204 has a ring of arc-shaped worm gear teeth 205 on its cylindrical surface. The arc-shaped groove in the slide seat 206 connects to the through position of the rotating rod 202 in the mounting base 201, so that the rotating worm gear 203 meshes with the worm gear teeth 205 on the cylindrical surface of the swing platform 204. When it is necessary to adjust the pitch angle of the clamped workpiece, the handle 502 is manually turned, and the rotating worm gear 203 drives the swing platform 204 to swing in the arc-shaped groove in the slide seat 206 to adjust the pitch angle.

[0070] The swing platform 204 has a scale 107 on its circular cross section and a corresponding scale on the slide seat 206. When the swing platform 204 swings within the slide seat 206, the operator can sense the adjustment of the pitch angle of the swing platform 204 by observing the change in the scale 107, thereby further improving the angle adjustment accuracy when manually adjusting the swing platform 204.

[0071] In addition, a locking bolt 208 is threaded through the slide seat 206. After the pitch angle is adjusted, the locking bolt 208 is manually rotated so that the threaded end of the locking bolt 208 abuts against the cylindrical surface of the swing platform 204. The frictional resistance prevents the swing platform 204 from swinging, reduces the occurrence of spontaneous swing of the swing platform 204, and maintains the adjustment accuracy.

[0072] It is worth noting that when the tilt angle of the swing platform 204 is adjusted to a plane, the swing platform 204 is in its initial position (ensuring that the workpiece clamped on the tilt surface is clamped in a plane), and the adjustment angle is 0°.

[0073] The various embodiments of this utility model have now been described in detail. To avoid obscuring the concept of this utility model, some details known in the art have not been described. Those skilled in the art will fully understand how to implement the technical solution of this utility model based on the above description. The scope of this utility model is defined by the appended claims.

Claims

1. A multi-angle fixture for a milling machine, comprising a planar rotary platform (1), characterized in that... ； The planar rotary platform (1) is installed inside the milling machine. An inclined platform (2) is provided on the rotating surface of the planar rotary platform (1). A clamping assembly (3) is installed on the inclined surface of the inclined platform (2). The workpiece on the clamping assembly (3) can be rotated in planar angle by the planar rotation platform (1) and rotated in pitch angle by the tilting platform (2); The clamping end of the clamping assembly (3) is provided with an irregularly shaped clamping head (4); The irregular clamping head (4) is connected to the clamping head adjustment assembly (5). The irregular clamping head (4) is rotatably set at the clamping end through the clamping head adjustment assembly (5). The rotation direction of the irregular clamping head (4) is perpendicular to the clamping direction of the clamping assembly (3).

2. A multi-angle fixture for a milling machine according to claim 1, characterized in that, The clamping assembly (3) includes two positioning clamps (301), which are fixedly installed on the inclined surface. The clamping surfaces of the two positioning clamps (301) are vertically arranged and respectively abut against different surfaces of the workpiece.

3. A multi-angle fixture for a milling machine according to claim 2, characterized in that, Each positioning clamp (301) has a corresponding sliding base (302) facing the clamping surface. The sliding base (302) is slidably disposed on the inclined surface and the sliding direction is towards the clamping surface of the positioning clamp (301). The sliding base (302) is rotatably connected to one end of the screw (303), and the other end of the screw (303) is threaded onto the fixed seat (304), which is fixed on the inclined surface.

4. A multi-angle fixture for a milling machine according to claim 1, characterized in that, The irregular clamping head (4) includes a cavity plate (401), which is installed on the sliding surface of the sliding base (302). A cavity is provided inside the cavity plate (401), one side of which is open and the opening direction faces the clamping surface of the positioning clamping plate (301). A rotating shaft (403) is fixed inside the cavity, and an arc-shaped clamping claw (402) is rotatably mounted on the rotating shaft (403). The swing direction of the arc-shaped clamping claw (402) faces the opening direction.

5. A multi-angle fixture for a milling machine according to claim 4, characterized in that, The arc-shaped gripper (402) has a C-shaped structure, and the two ends of the C-shaped structure abut against different surfaces of the workpiece.

6. A multi-angle fixture for a milling machine according to claim 4, characterized in that, The outer arc surface of the arc-shaped gripper (402) and the cavity surface of the cavity plate (401) are respectively connected to the two elastic ends of the elastic component, and the elastic components are respectively symmetrically arranged at the two arc-shaped ends of the arc-shaped gripper.

7. A multi-angle fixture for a milling machine according to claim 1, characterized in that, The clamping head adjustment assembly (5) includes a rotating column (501), a cavity plate (401) is fixedly connected to one end of the rotating column (501), the rotating column (501) passes through the upper part of the sliding base (302) and is rotatably mounted on the sliding base (302), and a handle (502) is fixedly connected to the other end of the rotating column (501). The sliding base (302) has a threaded hole vertically provided at its top end. The threaded hole is connected to the insertion position of the rotating column (501), and a fixing bolt (503) is matched with the thread inside the threaded hole.

8. A multi-angle fixture for a milling machine according to claim 1, characterized in that, The planar rotary platform (1) includes a base (101), which is installed inside the milling machine. A worm gear (102) is rotatably mounted on the base (101). The axial direction of the worm gear (102) is vertical. A planar mounting table (106) is coaxially mounted above the worm gear (102). The worm gear teeth (205) on the side of the worm gear (102) mesh with the teeth on the worm (103). The worm (103) is rotatably mounted on the base (101). A locking element (105) is threaded through the base (101), and the locking element (105) abuts against the side of the worm gear (102).

9. A multi-angle fixture for a milling machine according to claim 1, characterized in that, The inclined platform (2) includes a mounting base (201), which is coaxially fixed on the surface of the planar mounting platform (106). A rotating rod (202) is inserted through the mounting base (201), and the rotating rod (202) is rotatably mounted on the mounting base (201). The insertion end of the rotating rod (202) is located inside the mounting base (201), and a worm gear (203) is coaxially fixedly connected to the insertion end. The mounting base (201) is fixedly connected to the upper part of the sliding base (206), the sliding base (206) is provided with an arc-shaped sliding groove, and a swing platform (204) is rotatably installed on the surface of the arc-shaped sliding groove. The swing platform (204) has a semi-cylindrical structure. The swing platform (204) has a ring of worm gear teeth (205) on its cylindrical surface. The arc-shaped groove space in the slide seat (206) is connected to the through position of the rotating rod (202) in the mounting seat (201). The rotating worm gear (203) meshes with the worm gear teeth (205) on the cylindrical surface of the swing platform (204). The slide seat (206) is also threaded with a locking bolt (208), and the threaded end of the locking bolt (208) abuts against the cylindrical surface of the swing platform (204).

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