A combined milling device and method for a jaw part

Abstract

The present invention provides a combined milling device and method for a jaw part, belonging to the technical field of machining, including a dedicated auxiliary positioning device and a new machining method. The device includes a base with a boss, holes are made on the boss, and positioning is achieved through the cooperation of the positioning pins with the holes on the jaw part. The L-shaped pressing plate fixes the jaw part on the base. Holes are also made in the non-boss area of the base, and struts are arranged in the holes, passing through the holes under the machined surface of the jaw part. The jaw part is supported by pads and compression nuts to avoid machining vibration. The machine tool clamps the device through a transverse clamping column or a longitudinal clamping column fixed on the base, and accordingly realizes the bottom-edge line cutting machining of the curved surface of the jaw part or the side-edge machining of the milling cutter. The present invention can synchronously machine the combined jaw parts, ensuring the machining accuracy of a single part and improving the assembly accuracy at the same time. The device has a simple structure, is easy to operate, and has low manufacturing and maintenance costs, and is suitable for batch production.

Description

Technical Field

[0001] The present invention belongs to the technical field of machining, and particularly relates to a combined milling device and method for a jaw part. Background Art

[0002] As Figure 1 shown in FIGS. 1, 2(a) and 2(b), it is an important structural part on an aircraft functional accessory. The machining accuracy of this jaw part plays an important role in the performance of the function. This jaw part is made of cast steel, with a complex spatial structure, many spatial dimensions, and high dimensional accuracy and position accuracy for some mating surfaces, reaching H8 level accuracy. The jaw part includes two jaws symmetrically installed on the left and right. Except for some different structural features, most of the other structures of the two jaws are the same and symmetrical. There are bosses protruding from both sides in the middle of the two jaws. One side of the two opposite bosses is surface Q and the other is surface P. There are holes c and a respectively on the two bosses, holes d and b respectively beside the bosses. The end faces of the same side of the two jaws have curved surfaces N and M respectively. There are holes respectively below the curved surfaces N and M. After installation, holes c and a, and holes d and b are coaxial respectively. In order to ensure the normal operation of the product function and improve the reliability of the product work, it is necessary to ensure that when holes c and a, and holes d and b pass through positioning pins of corresponding dimensions respectively, the height difference between the curved surfaces M and N is 0 or small enough. In this way, when the curved surfaces M and N cooperate with other parts, the system error is small enough. Currently, the method used to machine the curved surfaces M and N on the left and right jaw parts is to use two sets of special toolings for positioning respectively, and machine the left and right jaws independently. The positioning of the toolings uses the method of inserting pins through holes a and b, and holes c and d respectively. Due to the manufacturing errors in the two sets of toolings and the tool deflection or positioning tolerance during the separate machining of the left and right jaws, after the left and right jaws are installed, the height difference between the curved surfaces M and N is very large, resulting in the inability of the product to realize the subsequent function, and even unable to complete the installation, and it needs to be repaired or scrapped many times. Summary of the Invention

[0003] In order to solve the above problems existing in the prior art, the present invention provides a combined milling device and method for a jaw part, which is a special auxiliary positioning device and a new machining method, capable of synchronously machining after combining parts, ensuring the machining accuracy of a single part while also improving the assembly accuracy.

[0004] In order to achieve the above object, the technical solution adopted by the present invention is as follows:

[0005] A combined milling device for a jaw part, the combined milling device comprising a base 1, a transverse clamping column 2, an L-shaped pressing plate 4, a pressing bolt 5, a pressing nut 6, an upper support column 7, an adjustable spacer 8, a radial positioning pin 10, a circumferential positioning pin 11, a rod 12, a lower spacer 13, a lower support column 14, a clamping limit block 15 and an anti-vibration support column 16.

[0006] The base 1 is a plate-shaped member, and a U-shaped plate is clamped at one end of the base 1 as a positioning boss. The two side surfaces of the positioning boss are respectively a positioning boss surface a 1-1 and a positioning boss surface b 1-2, which are respectively in contact with the surface P and the surface Q of the jaw part; through positioning pin holes a 1-3 and b 1-4 are provided on the positioning boss. The positioning pin hole a 1-3 is used to position the holes a and c of the jaw part, and the positioning pin hole b 1-4 is used to position the holes b and d of the jaw part. A threaded through hole 1-5 is also made outside the positioning pin hole b 1-4; at the other end of the base 1, mounting holes a 1-6 and b 1-7 are made, and their positions respectively correspond to the holes below the curved surfaces M and N of the jaw part.

[0007] The radial positioning pin 10 is a cylindrical member, passes through the positioning pin hole a 1-3 on the base 1, and is fixedly connected to the base 1. After the jaw part is installed, the radial positioning pin 10 passes through the holes a and c of the jaw part and is lower than the upper end surfaces of the two holes, playing a role in radially positioning the jaw part.

[0008] The circumferential positioning pin 11 is a cylindrical member, passes through the positioning pin hole b 1-4 on the base 1, and is fixedly connected to the base 1. After the jaw part is installed, the circumferential positioning pin 11 passes through the holes b and d of the jaw part to prevent the jaw part from rotating circumferentially.

[0009] The L-shaped pressing plate 4 is an L-shaped member, and together with the pressing bolt 5, it forms a pressing device. There are two groups of pressing devices, symmetrically arranged on the two side surfaces of the positioning boss of the base 1. During installation, its horizontal plate presses on the boss outside the jaw part, and the pressing bolt 5 cooperates with the threaded through hole 1-5 on the base 1, so that the surface P and the surface Q of the jaw part are closely attached to the two positioning boss surfaces of the base 1.

[0010] One ends of the upper support column 7 and the lower support column 14 are respectively fixedly connected in the mounting holes b 1-7 and a 1-6, and they are respectively located on both sides of the base 1. The other ends of the upper support column 7 and the lower support column 14 are both threaded ends. During installation, the upper support column 7 passes through the hole below the curved surface N of the jaw part, and the lower support column 14 passes through the hole below the curved surface M of the jaw part. The threaded end parts of the two are respectively pressed by the pressing nut 6 to fix the jaw part.

[0011] The adjustable cushion block 8 and the lower cushion block 13 have the same structure. Threaded holes are provided at the centers of both, which are respectively matched with the threaded ends of the upper support column 7 and the lower support column 14, and the height is adjusted by screwing; threaded through holes are provided on the outer cylindrical surfaces of the adjustable cushion block 8 and the lower cushion block 13, and the rod 12 is screwed into the threaded through holes to lock the adjustable cushion block 8 and the lower cushion block 13 respectively. During installation, the adjustable cushion block 8 and the lower cushion block 13 are respectively located inside the corresponding side jaw parts, and are used to adjust the auxiliary support height during processing to prevent machining vibration.

[0012] The described transverse clamping column 2, clamping limit block 15 and anti-vibration support column 16 form a clamping mechanism; the transverse clamping column 2 and the anti-vibration support column 16 are both cylindrical members. One end face of each of them is fixedly connected to both side faces of the base 1 and avoids the positioning boss. The installation axes of the two are perpendicular to the symmetry plane of the base 1. The transverse clamping column 2 is used for clamping the machine tool during processing to realize the bottom-edge line cutting processing of the milling cutter. A center hole is provided at the other end face of the anti-vibration support column 16. After the machine tool clamps the transverse clamping column 2, the center on the opposite side abuts against the center hole to prevent machining vibration caused by excessive cantilever length during cutting, resulting in vibration marks on the machined surface; the clamping limit block 15 is fixedly connected to the middle of the transverse clamping column 2 and is used for positioning during machine tool clamping to prevent the axial position of the combined milling device from moving, ensuring the consistency and accuracy of processing.

[0013] Further, the base 1 is made of steel.

[0014] Further, the clamping mechanism is replaced by a clamping component composed of a longitudinal clamping column 3 and a rectangular connecting block 9; specifically, the longitudinal clamping column 3 is a cylindrical member, one end face of which is fixedly connected to one side face of the rectangular connecting block 9, and the other side face of the rectangular connecting block 9 is fixedly connected to the base 1, and the installation axis of the longitudinal clamping column 3 is parallel to the symmetry plane of the base 1; the clamping component is used for clamping the machine tool during processing to realize the side-edge machining of the milling cutter. Among them, the rectangular connecting block 9 plays a transitional role, increasing the connection strength and improving the stability between the base 1 and the longitudinal clamping column 3.

[0015] Further, the rectangular connecting block 9 is a rectangular steel plate.

[0016] A combined milling method for jaw parts, the combined milling method includes the following steps:

[0017] 1. Select a combined milling device with a clamping mechanism or a combined milling device with a clamping component according to the cutting methods of the cutting surfaces M and N.

[0018] 2. Place the two jaws of the jaw part opposite to each other on both sides of the base 1. Insert the radial positioning pin 10 through hole a and hole c, and insert the circumferential positioning pin 11 through hole b and hole d. Insert the upper support column 7 and the lower support column 14 into the holes below the curved surface N and the curved surface M respectively, so that the surface P and the surface Q are respectively attached to the two positioning convex surfaces of the base 1 to complete the positioning.

[0019] 3. By twisting the compression bolt 5, the L-shaped pressing plate 4 presses the jaw part against the positioning convex surface of the base 1 from both sides; for the combined milling device provided with a clamping mechanism, it is also necessary to place the machine tool center point in the center point hole of the anti-vibration support column 16 to complete the clamping.

[0020] 4. Assist in adjusting the relative positions of the adjustable spacer 8 and the upper support column 7 and the relative position of the lower spacer 13 and the lower support column 14 through the rod 12, so that the adjustable spacer 8 and the lower spacer 13 are respectively attached to the inner sides of the two jaws, playing a supporting role during processing to prevent processing vibration.

[0021] 5. For the combined milling device provided with a clamping mechanism, the four-axis turntable on the CNC milling machine is used to clamp the transverse clamping column 2. After the three-jaw of the machine tool clamps the transverse clamping column 2, the clamping limit block 15 abuts against the end face of the three-jaw to complete the positioning and clamping on the four-axis turntable. Through CNC programming, the bottom edge of the milling cutter is used to perform contour cutting on the curved surface M and the curved surface N to complete the processing.

[0022] For the combined milling device provided with a clamping component, the four-axis turntable on the CNC milling machine is used to clamp the longitudinal clamping column 3. Through CNC programming, the side edge of the milling cutter is used to perform layer-by-layer cutting on the curved surface M and the curved surface N to complete the processing.

[0023] Since the same fixture, positioning surface, and CNC program are used during the processing, the consistency of the curved surfaces M and N is ensured.

[0024] Advantages of the present invention:

[0025] 1. High processing accuracy and small assembly error. The device of the present invention can complete the processing of the curved surfaces M and N of the left and right jaws by using the same reference and CNC program, eliminating the positioning error, principle error, etc. generated during the separate processing of the left and right jaws. While improving the processing accuracy of a single part, the assembly accuracy is also improved, which is beneficial to the stable function of the assembled product.

[0026] 2. The processing efficiency is improved. Through the device of the present invention, the curved surface processing of the left and right jaws can be completed by one-time milling, and the processing efficiency is greatly improved.

[0027] 3. The device has a simple structure, is easy to operate, has low manufacturing and maintenance costs, is suitable for batch production, and greatly improves the production efficiency. Description of the Drawings

[0028] Figure 1- Perspective view of the jaw part, where hole c and hole a represent the holes on two jaw bosses, hole d and hole b represent the holes beside two bosses, and surface N and surface M represent the surfaces at the same-side ends of two jaws;

[0029] Figure 2(a) - Front view of the jaw part;

[0030] Figure 2(b) - Top view of the jaw part, where surface Q and surface P represent the opposite surfaces of two jaw bosses;

[0031] Figure 3 - Front view of the combined milling device of Example 1;

[0032] Figure 4 - Perspective view of the combined milling device of Example 1 Figure 1 ;

[0033] Figure 5 - Second perspective view of the combined milling device of Example 1 (part of the components are hidden);

[0034] Figure 6 - Clamping schematic diagram of the combined milling device of Example 1 (part of the components are hidden);

[0035] Figure 7 - Structural schematic diagram of the base, where (a) is the front view and (b) is the side view;

[0036] Figure 8 - Perspective view of the combined milling device of Example 2 Figure 1 ;

[0037] Figure 9 - Second perspective view of the combined milling device of Example 2;

[0038] In the figure: 1 - Base; 2 - Transverse clamping column; 3 - Longitudinal clamping column; 4 - L-shaped pressing plate; 5 - Compression bolt; 6 - Compression nut; 7 - Upper support column; 8 - Adjustable spacer; 9 - Rectangular connecting block; 10 - Radial positioning pin; 11 - Circumferential positioning pin; 12 - Rod; 13 - Lower spacer; 14 - Lower support column; 15 - Clamping limit block; 16 - Vibration-proof support column; positioning convex surface a 1-1; positioning convex surface b 1-2; positioning pin hole a 1-3; positioning pin hole b 1-4; threaded through hole 1-5; mounting hole a 1-6; mounting hole b 1-7. Detailed implementation manners

[0039] The following further illustrates the detailed implementation manners of the present invention in combination with the accompanying drawings and technical solutions.

[0040] It should be understood that the attached drawings are not drawn to scale and are merely appropriately simplified drawings for illustrating the basic principles and various features of the present invention. The specific design features of the present invention disclosed herein, including, for example, specific dimensions, directions, positions, and shapes, will be determined in part by the specific application and usage environment. In the multiple attached drawings, the same or equivalent components (elements) are labeled with the same reference numerals.

[0041] Embodiment 1

[0042] A combined milling device for a jaw part, comprising a base 1, a transverse clamping column 2, an L-shaped pressing plate 4, a pressing bolt 5, a pressing nut 6, an upper support column 7, an adjustable spacer 8, a radial positioning pin 10, a circumferential positioning pin 11, a rod 12, a lower spacer 13, a lower support column 14, a clamping limit block 15, and an anti-vibration support column 16, as Figures 4 to 6 shown.

[0043] As Figure 7 shown, the base 1 is made of steel and is a plate-like member. A U-shaped plate is clamped at one end of the base 1 as a positioning boss, and its two side surfaces are respectively a positioning boss surface a 1-1 and a positioning boss surface b 1-2, which are respectively in contact with the surface P and surface Q of the jaw part; through positioning pin holes a1-3 and b 1-4 are provided on the positioning boss. The positioning pin hole a 1-3 is used to position the holes a and c of the jaw part, and the positioning pin hole b 1-4 is used to position the holes b and d of the jaw part. A threaded through hole 1-5 is also made outside the positioning pin hole b1-4; mounting holes a 1-6 and b 1-7 are made at the other end of the base 1, and their positions respectively correspond to the holes below the curved surfaces M and N of the jaw part.

[0044] The radial positioning pin 10 is a cylindrical member, passes through the positioning pin hole a 1-3 on the base 1, and is fixedly connected to the base 1. After the jaw part is installed, the radial positioning pin 10 passes through the holes a and c of the jaw part and is lower than the upper end surfaces of the two holes, playing a role in radially positioning the jaw part.

[0045] The circumferential positioning pin 11 is a cylindrical member, passes through the positioning pin hole b 1-4 on the base 1, and is fixedly connected to the base 1. After the jaw part is installed, the circumferential positioning pin 11 passes through the holes b and d of the jaw part to prevent the jaw part from rotating circumferentially.

[0046] The L-shaped pressing plate 4 is an L-shaped member and forms a pressing device with the pressing bolt 5. There are two groups of pressing devices, symmetrically arranged on the two side surfaces of the positioning boss of the base 1. During installation, its horizontal plate presses on the boss outside the jaw part, and the pressing bolt 5 cooperates with the threaded through hole 1-5 on the base 1, so that the surface P and surface Q of the jaw part are closely attached to the two positioning boss surfaces of the base 1.

[0047] One end of the upper support column 7 and the lower support column 14 is fixedly connected to the mounting holes b 1-7 and mounting holes a 1-6 respectively, and they are located on both sides of the base 1 respectively. The other ends of the upper support column 7 and the lower support column 14 are threaded ends. During installation, the upper support column 7 passes through the hole below the curved surface N of the jaw part, and the lower support column 14 passes through the hole below the curved surface M of the jaw part. The threaded end parts of both are tightened by the compression nuts 6 respectively, so that the jaw part is fixed.

[0048] The adjustable spacer 8 is provided with a threaded hole in the center, which cooperates with the threaded end of the upper support column 7. The height is adjusted by screwing. The outer cylindrical surface of the adjustable spacer 8 is provided with a threaded through hole, and the rod 12 is screwed into the threaded through hole to lock the adjustable spacer 8. During installation, it is located inside the jaw part on this side. The adjustable spacer 8 is used to adjust the auxiliary support height during processing to prevent processing vibration.

[0049] The lower spacer 13 is provided with a threaded hole in the center, which cooperates with the threaded end of the lower support column 14. The support height is adjusted by screwing. The outer cylindrical surface of the lower spacer 13 is provided with a threaded through hole, and the rod 12 is screwed into the threaded through hole to lock the lower spacer 13. During installation, it is located inside the jaw part on this side. The lower spacer 13 is used to adjust the auxiliary support height during processing to prevent processing vibration.

[0050] The transverse clamping column 2, the clamping limit block 15 and the anti-vibration support column 16 form a clamping mechanism; the transverse clamping column 2 and the anti-vibration support column 16 are both cylindrical members. One end face of each of them is fixedly connected to both side faces of the base 1 by welding and avoids the positioning boss. Their installation axes are perpendicular to the symmetry plane of the base 1. The transverse clamping column 2 is used for clamping the machine tool during processing, and the bottom edge of the milling cutter is processed by row cutting on the four-axis turntable of the machine tool. The other end face of the anti-vibration support column 16 is provided with a center hole. After the four-axis turntable of the machine tool clamps the transverse clamping column 2, the center of the opposite side abuts against the center hole to prevent vibration during cutting due to too long cantilever, resulting in vibration marks on the processed surface; the clamping limit block 15 is fixedly connected to the middle of the transverse clamping column 2 and is used for positioning during machine tool clamping to prevent the axial position of the processing device from moving, ensuring the consistency and accuracy of processing.

[0051] The steps of simultaneously processing the curved surface M and the curved surface N by this device are as follows:

[0052] 1. Install the left and right jaw parts in the way as Figure 6 . At this time, pass the radial positioning pin 10 through the holes a and c of the left and right jaws, and pass the circumferential positioning pin 11 through the holes b and d of the left and right jaws. The upper support column 7 and the lower support column 14 respectively pass through the holes below the curved surfaces N and M, so that the surfaces P and Q are respectively attached to the two positioning boss surfaces of the base 1 to complete the positioning.

[0053] 2. By turning the compression bolt 5, the L-shaped pressing plate 4 presses the jaw parts from both sides against the positioning convex surface of the base 1, and the machine tool center is placed in the center hole of the vibration-proof support column 16 to complete the clamping, as Figure 6 shown.

[0054] 3. By means of the rod 12 to assist in adjusting the relative positions of the adjustable spacer block 8 and the upper support column 7 and the relative positions of the lower spacer block 13 and the lower support column 14, so that the adjustable spacer block 8 and the lower spacer block 13 respectively fit the inner sides of the two jaws, playing a supporting role during machining to prevent machining vibration, as Figure 3 shown.

[0055] 4. The four-axis turntable on the CNC milling machine clamps the transverse clamping column 2. After the three-jaw of the machine tool clamps the transverse clamping column 2, the clamping limit block 15 abuts against the end face of the three-jaw to complete the positioning and clamping on the four-axis turntable. Through CNC programming, the bottom edge of the milling cutter is used to perform contour cutting on the curved surfaces M and N to complete the machining.

[0056] Due to the use of the same fixture, positioning surface and CNC program during the machining process, the consistency of the curved surfaces M and N is ensured.

[0057] Embodiment 2

[0058] Different from Embodiment 1, in the combined milling device, the clamping mechanism composed of the transverse clamping column 2, the clamping limit block 15 and the vibration-proof support column 16 is replaced by a clamping component composed of a longitudinal clamping column 3 and a rectangular connecting block 9; specifically, the rectangular connecting block 9 is a rectangular steel plate, the longitudinal clamping column 3 is a cylindrical member, one end face of the longitudinal clamping column 3 is fixedly connected to one side face of the rectangular connecting block 9, the other side face of the rectangular connecting block 9 is fixedly connected to the base 1 by bolts, and the installation axis of the longitudinal clamping column 3 is parallel to the symmetry plane of the base 1. The clamping component is used for clamping the machine tool during the machining process, and the side edge of the milling cutter is used for machining on the four-axis turntable of the machine tool. Among them, the rectangular connecting block 9 plays a transitional role, increasing the connection strength and improving the stability between the base 1 and the longitudinal clamping column 3, as Figure 9 shown.

[0059] The steps for simultaneously machining the curved surfaces M and N by this device are as follows:

[0060] 1. Install the left and right jaw parts in the manner as Figure 8 . At this time, the radial positioning pin 10 passes through the holes a and c of the left and right jaws, and the circumferential positioning pin 11 passes through the holes b and d of the left and right jaws. The upper support column 7 and the lower support column 14 respectively pass through the holes below the curved surfaces N and M, so that the surfaces P and Q respectively fit on the two positioning convex surfaces of the base 1 to complete the positioning.

[0061] 2. By twisting the compression bolt 5, the L-shaped pressing plate 4 presses the jaw part against the positioning convex surface of the base 1 from both sides.

[0062] 3. By using the rod 12 to assist in adjusting the relative positions of the adjustable spacer block 8 and the upper support column 7, and the relative positions of the lower spacer block 13 and the lower support column 14, the adjustable spacer block 8 and the lower spacer block 13 are respectively fitted to the inner sides of the two jaws, playing a supporting role during processing to prevent processing vibration.

[0063] 4. The longitudinal clamping column 3 is clamped by the four-axis turntable on the CNC milling machine, and through CNC programming, the side edge of the milling cutter is used to cut the curved surfaces M and N in layers to complete the processing.

[0064] The above embodiments only represent the implementation modes of the present invention, but should not be construed as limiting the scope of the patent for the present invention. It should be noted that for those skilled in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention.

Claims

1. A combined milling device for a jaw part, characterized in that, The combined milling device includes a base (1), a lateral clamping column (2), an L-shaped pressing plate (4), a pressing bolt (5), a pressing nut (6), an upper support column (7), an adjustable spacer (8), a radial positioning pin (10), a circumferential positioning pin (11), a lower spacer (13), a lower support column (14), a clamping limit block (15) and a vibration-proof support column (16); The base (1) is a plate-like member. A U-shaped plate is clamped at one end of the base (1) as a positioning boss. The two side surfaces of the positioning boss are respectively in contact with the surfaces P and Q of the jaw part. Two through positioning pin holes are provided on the positioning boss for positioning the holes a and c and the holes b and d of the jaw part respectively. Threaded through holes are also made outside the two positioning pin holes. Two mounting holes are made at the other end of the base (1), and their positions respectively correspond to the holes below the curved surfaces M and N of the jaw part; The radial positioning pin (10) and the circumferential positioning pin (11) are cylindrical members, which respectively penetrate through the two positioning pin holes on the base (1) and are fixedly connected to the base (1). After the jaw part is installed, the radial positioning pin (10) passes through the holes a and c of the jaw part and is lower than the upper end surfaces of the two holes, playing a role in radially positioning the jaw part. The circumferential positioning pin (11) passes through the holes b and d of the jaw part to prevent the jaw part from rotating circumferentially; The L-shaped pressing plate (4) is an L-shaped member and forms a pressing device with the pressing bolt (5). There are two groups of pressing devices, which are symmetrically arranged on the two side surfaces of the positioning boss of the base (1). During installation, its horizontal plate presses on the boss outside the jaw part. The pressing bolt (5) cooperates with the threaded through hole on the base (1) to make the surfaces P and Q of the jaw part closely fit with the two positioning boss surfaces of the base (1); One ends of the upper support column (7) and the lower support column (14) are respectively fixedly connected in the two mounting holes on the base (1), and the two are respectively located on both sides of the base (1). The other ends of the upper support column (7) and the lower support column (14) are both threaded ends. During installation, the upper support column (7) penetrates into the hole below the curved surface N of the jaw part, and the lower support column (14) penetrates into the hole below the curved surface M of the jaw part. The threaded end parts of the two are respectively pressed by the pressing nut (6) to fix the jaw part; The adjustable spacer (8) has the same structure as the lower spacer (13). A threaded hole is provided at the center of the two, which respectively cooperate with the threaded ends of the upper support column (7) and the lower support column (14). The height is adjusted by screwing and locked. During installation, the adjustable spacer (8) and the lower spacer (13) are respectively located inside the corresponding jaw part for auxiliary support to prevent machining vibration; The described horizontal clamping column (2), clamping limit block (15) and anti-vibration support column (16) form a clamping mechanism; the horizontal clamping column (2) and the anti-vibration support column (16) are both cylindrical members, one end face of each of them is fixedly connected to the two side faces of the base (1) respectively and avoids the positioning boss, and their installation axes are perpendicular to the symmetry plane of the base (1). The horizontal clamping column (2) is used for clamping the machine tool during the machining process to realize the bottom-edge contour cutting of the milling cutter. The other end face of the anti-vibration support column (16) is provided with a center hole, and the center of the machine tool is pressed into this center hole to prevent vibration during cutting; the clamping limit block (15) is fixedly connected to the middle of the horizontal clamping column (2) and is used for positioning during the clamping of the machine tool.

2. The combined milling device for a jaw part according to claim 1, characterized in that, The described base (1) is made of steel.

3. The combined milling device for a jaw part according to claim 1, characterized in that, Threaded through holes are provided on the outer cylindrical surfaces of the described adjustable spacer block (8) and the lower spacer block (13), and the rod (12) is screwed into these threaded through holes to lock the adjustable spacer block (8) and the lower spacer block (13) respectively.

4. The combined milling device for a jaw part according to claim 1, characterized in that, Replace the clamping mechanism in the combined milling device with a clamping component composed of a longitudinal clamping column (3) and a rectangular connecting block (9); specifically, the longitudinal clamping column (3) is a cylindrical member, one end face of which is fixedly connected to one side face of the rectangular connecting block (9), and the other side face of the rectangular connecting block (9) is fixedly connected to the base (1), and the installation axis of the longitudinal clamping column (3) is parallel to the symmetry plane of the base (1); the clamping component is used for clamping the machine tool during the machining process to realize the side-edge machining of the milling cutter. Among them, the rectangular connecting block (9) is used to increase the connection strength between the base (1) and the longitudinal clamping column (3) and improve the stability.

5. The combined milling device for a jaw part according to claim 4, characterized in that, The described rectangular connecting block (9) is a rectangular steel plate.

6. A combined milling method for a jaw part, characterized in that, The described combined milling method includes the following steps: Step 1, select a combined milling device including a clamping mechanism as described in any one of claims 1-3 or a combined milling device including a clamping component as described in claim 4 or 5 according to the cutting method; Step 2, place the two jaws of the jaw part opposite to each other on both sides of the base (1), pass the radial positioning pin (10) through hole a and hole c, and pass the circumferential positioning pin (11) through hole b and hole d. The upper support column (7) and the lower support column (14) are respectively inserted into the holes below the curved surface N and the curved surface M, so that the surfaces P and Q are respectively attached to the two positioning boss surfaces of the base (1) to complete the positioning; Step 3, by turning the compression bolt (5), the L-shaped pressing plate (4) presses the jaw part against the base (1) from both sides; for the combined milling device provided with a clamping mechanism, it is also necessary to press the center of the machine tool into the center hole of the anti-vibration support column (16) to complete the clamping; Step 4, adjust the relative positions of the adjustable spacer block (8) and the upper support column (7) and the relative positions of the lower spacer block (13) and the lower support column (14) so that the adjustable spacer block (8) and the lower spacer block (13) are respectively attached to the inner side surfaces of the two jaws to prevent vibration during machining; Step 5, for the combined milling device provided with a clamping mechanism as described in any one of claims 1-3, clamp the transverse clamping column (2), press against the clamping limit block (15), complete positioning and clamping, and use the bottom edge of the milling cutter to perform contour cutting on the curved surfaces M and N to complete the machining; For the combined milling device provided with a clamping component as described in claim 4 or 5, clamp the longitudinal clamping column (3), and use the side edge of the milling cutter to perform layer-by-layer cutting on the curved surfaces M and N to complete the machining.

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