Flange plate turning clamp for machine tool

Abstract

The invention relates to the technical field of flange plate machining equipment, and discloses a flange plate turning clamp for a machine tool. The cutter bracket is movably arranged at one end of the upper part of the rack and is used for mounting a cutter; the clamping mechanism is arranged at the other end of the upper portion of the rack and comprises a first shell, an outer wall fixing clamp, an inner wall fixing clamp and a transmission mechanism, the outer wall fixing clamp is fixedly arranged at the end, facing the cutter support, of the first shell, the inner wall fixing clamp is movably arranged in the first shell and located in the center of the outer wall fixing clamp, and the transmission mechanism is arranged in the first shell and located in the center of the outer wall fixing clamp. The driving device is used for driving the outer wall fixing clamp and the inner wall fixing clamp to conduct clamping operation. The outer wall and the inner wall of the flange plate can be clamped, the applicability is good, repeated replacement of the clamp is avoided, and the working efficiency is improved; the inner wall fixing clamp can move, so that the inner wall fixing clamp and the outer wall fixing clamp are not located on the same machining face and do not interfere with each other during machining, and the machining quality and production safety are guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of textile fabric processing, in particular to a flange turning fixture for machine tools. Background Art

[0002] Flange is a general term for a disc-shaped metal body with several holes for fixing around it to connect pipes to each other. It is connected to the pipe end. There are holes on the flange, and bolts are used to connect the two flanges. Gaskets are used to seal the flanges. Flange is a disc-shaped part, which is the most common in pipeline engineering. Flanges are used in pairs. Because they look strange, they are called flanges as long as they look similar.

[0003] Chinese patent CN118060569B discloses a flange processing device. It includes a base, an electric rotating table, a rotating frame I, a limit plate, an anti-skid pad I, an anti-skid pad II, etc. The electric rotating table is installed on the base, the rotating frame I is connected to the turntable of the electric rotating table, and a plurality of limit plates are slidably connected to the rotating frame I in annular intervals, and the side of the upper side of the limit plates close to each other is connected to the anti-skid pad I. The present invention cooperates with the rotating frame I, the limit plate, the anti-skid pad I, the anti-skid pad II, the servo motor I, the screw rod I, the shielding mechanism and the feeding mechanism to automatically put the flange on the rotating frame I for feeding, and then the inner wall of the flange is supported by the anti-skid pad I, or the outer wall of the flange is clamped by the anti-skid pad II, so that the fixing method of the flange can be switched, so that the inner and outer sides of the flange can be processed later, which is not only convenient to operate, low cost, but also can improve work efficiency.

[0004] The technical solution provided by the above patent fixes the flange by means of internal and external clamping respectively. However, during processing, the axial depth of the anti-slip pad I and the anti-slip pad II cannot be adjusted, which will cause interference during processing and make it impossible to process the local position. Summary of the invention

[0005] To solve the above problems, the present invention adopts the following technical solutions.

[0006] A flange turning fixture for machine tools, characterized in that it comprises: frame; A tool support, movably arranged at one end of the upper part of the frame, for mounting the tool; The clamping mechanism is arranged at the other end of the upper part of the frame, and the clamping mechanism includes: Shell 1, The outer wall fixing clip is fixedly arranged on one end of the housing facing the tool support. The inner wall fixing clip is movably arranged in the housing 1 and is located at the center of the outer wall fixing clip. The transmission mechanism is arranged in the housing 1 and is used to drive the outer wall fixing clamp and the inner wall fixing clamp to perform clamping operation. The transmission mechanism includes a box body, a wall panel is longitudinally arranged in the box body, and the box body is divided into a first cavity and a second cavity from left to right. An input shaft is transversely arranged at the lower end of the box body, and one end of the input shaft is connected to the output end of the driving motor. An output shaft 1 and an output shaft 2 are transversely arranged from bottom to top in the first cavity, and the left ends of the output shaft 1 and the output shaft 2 extend out of the box body. An output shaft 3 is arranged in the second cavity, and the right end of the output shaft 3 extends out of the box body. Gear 1, gear 2 and gear 3 are arranged on the input shaft. Gear 1 and gear 2 are located in the first cavity, gear 3 is located in the second cavity, an output shaft 1 is arranged horizontally in the middle of the first cavity, a first driven gear is arranged on the output shaft 1 through a needle bearing, a coupling gear 1 is coaxially arranged on one side of the first driven gear, the coupling gear 1 is arranged on the output shaft 1 through spline meshing movement, a card slot is arranged on the outer side of the coupling gear 1 for connecting the shift fork 1, a docking slot 1 is arranged on the side of the first driven gear facing the coupling gear 1, and a card block 1 corresponding to the docking slot 1 is arranged on the coupling gear 1.

[0007] Preferably, a second driven gear is coaxially arranged on the other side of the combining gear one, the second driven gear is arranged on the output shaft one through a needle bearing, a third driven gear is arranged on the output shaft two through a needle bearing, the third driven gear is meshed with the second driven gear, a combining gear two is coaxially arranged on one side of the third driven gear, the combining gear two is movable and arranged on the output shaft two through spline meshing, a card groove is arranged on the outer side of the combining gear two for connecting the shift fork two, a docking groove two is arranged on the side of the third driven gear facing the combining gear one, and a card block two corresponding to the docking groove two is arranged on the combining gear two.

[0008] Preferably, an output shaft three is horizontally arranged in the middle of the second cavity, a fourth driven gear is arranged on the output shaft three through a needle bearing, a coupling gear three is coaxially arranged on one side of the fourth driven gear, the coupling gear three is arranged on the output shaft three through spline meshing movement, a card slot is arranged on the outer side of the coupling gear three for connecting the shift fork three, a docking slot three is arranged on the side of the fourth driven gear facing the coupling gear three, and a card block three corresponding to the docking slot three is arranged on the coupling gear three.

[0009] Preferably, openings are provided at positions on the top of the box body corresponding to connecting fork one, connecting fork two and connecting fork three, and telescopic rod one, telescopic rod two and telescopic rod three are provided at the three openings respectively, the extended end of telescopic rod one is connected to connecting fork one, the extended end of telescopic rod two is connected to connecting fork two, and the extended end of telescopic rod three is connected to connecting fork three.

[0010] Preferably, a dust cover is provided at the opening.

[0011] Preferably, the outer wall fixing clamp includes a plurality of sliding seats, which are evenly distributed in an annular manner on one side of shell one, a sliding groove is obliquely arranged in the sliding seat, a clamping block is slidably arranged in the sliding groove, a push rod is arranged at one end of the clamping block facing shell one, a roller is arranged at one end of the push rod facing the clamping block, the push rod passes through the through hole on shell one and extends into the interior of shell one, a pressure plate is meshed with the three outer ends of the output shaft, a slider is arranged on the outside of the pressure plate, the slider moves in the slide rail inside the shell one, and the other end of the push rod is connected to the pressure plate.

[0012] Preferably, a guide cylinder is provided on an inner side of the shell, and the push rod slides in the guide cylinder.

[0013] Preferably, the inner wall fixing clamp comprises a cylinder, a clamp is arranged at the front end of the cylinder, a transmission shaft is arranged on the inner wall of the cylinder, a cylindrical hole is arranged at one end of the transmission shaft facing the box body, the cylindrical hole is meshed with the outer end of the output shaft one through a spline, a gear four is arranged at one end of the outer side of the cylinder close to the box body, a gear five is arranged at the outer end of the output shaft two, the gear four meshes with the gear five, an external thread is arranged on the outer side of the other end of the cylinder, a sleeve is arranged at the joint of the shell one and the cylinder, an internal thread is arranged on the inner wall of the sleeve, and the cylinder meshes and moves in the sleeve. The clamp includes a shell body 2, which is connected to one end of the cylinder body, and a plurality of slots are evenly distributed on the outer wall of the shell body. A mounting column 5-25 is arranged inside the shell body, and arc-shaped abutment blocks corresponding to the number of slots are evenly distributed on the outer side of the mounting column 5-25. An arc-shaped pressure block is rotatably arranged in the slot, and a rubber pad is arranged on the outer side of the arc-shaped pressure block. The mounting column 5-25 is fixedly connected to one end of the transmission shaft.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention is provided with an outer wall fixing clamp and an inner wall fixing clamp, which can clamp the outer wall and inner wall of the flange, thereby processing the outer side and inner hole of the flange, has good applicability, avoids repeated replacement of the clamp, and improves work efficiency; Second, the inner wall fixing clamp of the present invention is movable, so that the inner wall fixing clamp and the outer wall fixing clamp are not on the same processing surface, so that they do not interfere with each other during processing, thereby ensuring processing quality and production safety; 3. The present invention adopts a driving motor as the power input end, which has a simple and compact structure and reduces maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 for Figure 1 Partial schematic diagram at point A in the middle; Figure 3 This is a schematic diagram of the inner wall fixing clip structure of the present invention; Figure 4 It is a schematic diagram of the transmission mechanism structure of the present invention; Figure 5 It is a schematic diagram of the clamp structure of the present invention.

[0016] In the figure: 1, frame; 2 tool support; 3, shell 1; 4, outer wall fixing clip; 5, inner wall fixing clip; 6, box; 7, wall panel; 8, input shaft; 9, drive motor; 10, output shaft 1; 11, output shaft 2; 12, output shaft 3; 13, gear 1; 14, gear 2; 15, gear 3; 16, first driven gear; 17, connecting fork 1; 18, docking groove 1; 19, block 1; 20, second driven gear; 21, third driven gear; 22, combined gear 1; 23, combined gear 2; 24, connecting fork 2; 25, docking groove 2; 26, block 2; 27, fourth driven gear; 28, combined gear 3 ; 29. ​​Connecting fork three; 30. Docking groove three; 31. Block three; 32. Opening; 33. Telescopic rod one; 34. Telescopic rod two; 35. Telescopic rod three; 36. Dust cover; 4-1. Sliding seat; 4-2. Slide groove; 4-3. Clamp block; 4-4. Push rod; 4-5. Pressure plate; 4-6. Sliding block; 4-7. Slide rail; 4-8. Guide cylinder; 5-1. Cylinder body; 5-2. Clamp; 5-3. Drive shaft; 5-4. Cylindrical hole; 5-5. Gear four; 5-6. Gear five; 5-7. Sleeve; 5-21. Shell two; 5-22. Slot; 5-23. Arc-shaped block; 5-24. Arc-shaped pressure block; 5-25. Mounting column. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making creative work are within the scope of protection of the present invention.

[0019] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0020] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "mounted / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. Example

[0021] like Figure 1-5 As shown, in this embodiment, a flange turning fixture for a machine tool includes a frame 1, a tool holder 2 is movably provided at one end of the upper portion of the frame 1 for installing a tool, a clamping mechanism is provided at the other end of the upper portion of the frame 1, and the clamping mechanism includes a shell 3, an outer wall fixing clamp 4 is provided at one end of the shell 3 facing the tool holder 2, an inner wall fixing clamp 5 is also movably provided at the center position of the outer wall fixing clamp 4, and a transmission mechanism is provided in the shell 3 for driving the outer wall fixing clamp 4 and the inner wall fixing clamp 5 to perform clamping operations.

[0022] In this embodiment, the transmission mechanism includes a box body 6, a wall panel 7 is longitudinally arranged in the box body 6, and the box body 6 is divided into a first cavity and a second cavity from left to right. An input shaft 8 is transversely arranged at the lower end of the box body 6, and one end of the input shaft 8 is connected to the output end of the drive motor 9. An output shaft 10 and an output shaft 2 11 are transversely arranged from bottom to top in the first cavity, and the left ends of the output shaft 10 and the output shaft 2 11 both extend out of the box body 6. An output shaft 3 12 is arranged in the second cavity, and the right end of the output shaft 3 12 extends out of the box body 6. In this embodiment, the drive motor 9 is a servo motor.

[0023] In this embodiment, gear 13, gear 2 14 and gear 3 15 are arranged on the input shaft 8. Gear 13 and gear 2 14 are located in the first cavity, gear 3 15 is located in the second cavity, an output shaft 10 is arranged horizontally in the middle of the first cavity, a first driven gear 16 is arranged on the output shaft 10 through a needle bearing, a coupling gear 22 is coaxially arranged on one side of the first driven gear 16, the coupling gear 22 is arranged on the output shaft 10 through spline meshing movement, a card groove is arranged on the outer side of the coupling gear 22 for connecting the shift fork 17, a docking groove 18 is arranged on the side of the first driven gear 16 facing the coupling gear 22, and a card block 19 corresponding to the docking groove 18 is arranged on the coupling gear 22.

[0024] In this embodiment, a second driven gear 20 is coaxially arranged on the other side of the coupling gear 1 22, and the second driven gear 20 is arranged on the output shaft 10 through a needle bearing. A third driven gear 21 is arranged on the output shaft 2 11 through a needle bearing, and the third driven gear 21 is meshed with the second driven gear 20. A coupling gear 2 23 is coaxially arranged on one side of the third driven gear 21, and the coupling gear 2 23 is movably arranged on the output shaft 2 11 through spline meshing. A card groove is arranged on the outer side of the coupling gear 23 for connecting the shift fork 24, and a docking groove 25 is arranged on the side of the third driven gear 21 facing the coupling gear 1 22, and a card block 26 corresponding to the docking groove 25 is arranged on the coupling gear 23.

[0025] In this embodiment, an output shaft three 12 is horizontally arranged in the middle of the second cavity, a fourth driven gear 27 is arranged on the output shaft three 12 through a needle bearing, a coupling gear three 28 is coaxially arranged on one side of the fourth driven gear 27, the coupling gear three 28 is arranged on the output shaft three 12 through spline meshing movement, a card groove is arranged on the outer side of the coupling gear three 28 for connecting the shift fork three 29, a docking groove three 30 is arranged on the side of the fourth driven gear 27 facing the coupling gear three 28, and a card block three 31 corresponding to the docking groove three 30 is arranged on the coupling gear three 28.

[0026] In this embodiment, openings 32 are provided at the top of the box body 6 at positions corresponding to the connecting fork 1 17, the connecting fork 2 24 and the connecting fork 3 29, and telescopic rod 1 33, telescopic rod 2 34 and telescopic rod 3 35 are provided at the three openings 32, respectively. The extended end of the telescopic rod 1 33 is connected to the connecting fork 1 17, the extended end of the telescopic rod 2 34 is connected to the connecting fork 2 24, and the extended end of the telescopic rod 3 35 is connected to the connecting fork 3 29. In this embodiment, the telescopic rod 1 33, the telescopic rod 2 34 and the telescopic rod 3 35 are all electrically controlled telescopic rods.

[0027] In this embodiment, a dust cover 36 is provided at the opening 32 .

[0028] In this embodiment, the outer wall fixing clamp 4 includes a plurality of sliding seats 4-1, and the plurality of sliding seats 4-1 are evenly distributed in a ring shape on one side of the shell 3. A sliding groove 4-2 is obliquely arranged in the sliding seat 4-1, and a clamping block 4-3 is slidably arranged in the sliding groove 4-2. A push rod 4-4 is arranged at one end of the clamping block 4-3 facing the shell 3, and a roller is arranged at one end of the push rod 4-4 facing the clamping block 4-3. The push rod 4-4 passes through the through hole on the shell 3 and extends into the interior of the shell 3. A pressure plate 4-5 is meshed with the outer end of the output shaft 3 12, and a slider 4-6 is arranged on the outer side of the pressure plate 4-5. The slider 4-6 moves in the slide rail 4-7 on the inner side of the shell 3, and the other end of the push rod 4-4 is connected to the pressure plate 4-5.

[0029] In this embodiment, a guide cylinder 4-8 is provided inside the housing 3, and the push rod 4-4 slides inside the guide cylinder 4-8.

[0030] In this embodiment, the inner wall fixing clamp 5 includes a cylinder 5-1, a clamp 5-2 is provided at the front end of the cylinder 5-1, a transmission shaft 5-3 is provided on the inner wall of the cylinder 5-1, a cylindrical hole 5-4 is provided at one end of the transmission shaft 5-3 facing the box body 6, and the cylindrical hole 5-4 is meshed with the outer end of the output shaft 10 through a spline, a gear 4-5-5 is provided at the outer end of the cylinder 5-1 close to the box body 6, a gear 5-6 is provided at the outer end of the output shaft 2 11, and the gear 4-5-5 meshes with the gear 5-6, and an external thread is provided on the outer side of the other end of the cylinder 5-1, a sleeve 5-7 is provided at the joint of the shell 13 and the cylinder 5-1, and an internal thread is provided on the inner wall of the sleeve 5-7, and the cylinder 5-1 meshes and moves in the sleeve 5-7. The clamp 5-2 includes a shell 5-21, which is connected to one end of the cylinder 5-1. The outer wall of the shell 5-21 is evenly provided with a plurality of slots 5-22. A mounting column 5-25 is provided inside the shell 5-21. Arc-shaped abutment blocks 5-23 corresponding to the number of the slots 5-22 are evenly provided on the outer side of the mounting column 5-25. An arc-shaped pressure block 5-24 is rotatably provided in the slot 5-22. A rubber pad is provided on the outer side of the arc-shaped pressure block 5-24. The mounting column 5-25 is fixedly connected to one end of the transmission shaft 5-3.

[0031] The working principle of the above technical solution is: When the inner hole of the flange needs to be processed, the outer side of the flange is clamped by the outer wall fixing clamp 4. The method of use is: The first step is to start the drive motor 9. The second step is to control the extension of the telescopic rod 2 34 through the controller to drive the connecting fork 2 24 to move, so that the block 2 26 on the combined gear 23 is connected with the docking groove 25 on the third driven gear 21, so that the input shaft 8 drives the gear 2 14 to rotate, the gear 2 14 drives the second driven gear 20 to rotate, the second driven gear 20 drives the third driven gear 21 to rotate, the third driven gear 21 drives the combined gear 23 to rotate, the combined gear 23 drives the output shaft 2 11 to rotate, the output shaft 2 11 drives the gear 5 5-6 to rotate, the gear 5 5-6 drives the gear 4 5-5 to rotate, the gear 4 5-5 drives the cylinder 5-1 to rotate, thereby controlling the cylinder 5-1 to move horizontally, so that the clamp 5-2 shrinks to the position closest to the shell 1 3, and finally controls the telescopic rod 2 34 to reset; The third step is to place the flange at the center of the outer wall fixing clamp 4, and then control the telescopic rod 3 35 through the controller, extend it to drive the connecting fork 3 29 to move, so that the block 3 31 on the combination gear 3 28 is connected with the docking groove 3 30 on the fourth driven gear 27, so that the input shaft 8 drives the gear 3 15 to rotate, the gear 3 15 drives the fourth driven gear 27 to rotate, the fourth driven gear 27 drives the combination gear 3 28 to rotate, the combination gear 3 28 drives the output shaft 3 12 to rotate, and the output shaft 3 12 rotates, thereby controlling the horizontal movement of the pressure plate 4-5, and the pressure plate 4-5 makes the clamping block 4-3 move and extend in the slide groove 4-2 through the push rod 4-4, thereby clamping the outer side of the flange, and turning off the drive motor 9. After the processing is completed, the drive motor 9 is controlled to rotate in the opposite direction, so that the clamping block 4-3 is reset, and the drive motor 9 is turned off.

[0032] When the outer side of the flange needs to be processed, the inner hole of the flange is clamped by the inner wall fixing clamp 5. The method of use is: The first step is to start the drive motor 9. The second step is to control the extension of the telescopic rod 2 34 through the controller to drive the connecting fork 2 24 to move, so that the block 2 26 on the combined gear 23 is connected with the docking groove 25 on the third driven gear 21, so that the input shaft 8 drives the gear 2 14 to rotate, the gear 2 14 drives the second driven gear 20 to rotate, the second driven gear 20 drives the third driven gear 21 to rotate, the third driven gear 21 drives the combined gear 23 to rotate, the combined gear 23 drives the output shaft 2 11 to rotate, the output shaft 2 11 drives the gear 5 5-6 to rotate, the gear 5 5-6 drives the gear 4 5-5 to rotate, the gear 4 5-5 drives the cylinder 5-1 to rotate, thereby controlling the cylinder 5-1 to move horizontally, so that the clamp 5-2 extends to a position beyond the outer wall fixing clamp 4, and finally controlling the telescopic rod 2 34 to reset; In the third step, the controller is used to control the telescopic rod 33 to extend and drive the connecting fork 17 to move, so that the block 19 on the combined gear 22 is connected to the docking groove 18 on the first driven gear 16, so that the input shaft 8 drives the gear 13 to rotate, the gear 13 drives the first driven gear 16 to rotate, the first driven gear 16 drives the combined gear 22 to rotate, the combined gear 22 drives the output shaft 10 to rotate, the output shaft 10 drives the transmission shaft 5-3 to rotate, the transmission shaft 5-3 drives the mounting column 5-25 to rotate, so that the arc-shaped block 5-23 pushes out the arc-shaped pressing block 5-24, thereby clamping the inner hole of the flange, and turning off the driving motor 9. After the processing is completed, the driving motor 9 is controlled to reverse, so that the arc-shaped pressing block 5-24 shrinks back into the shell 2 5-21, and the operation of the second step above is reversed, so that the clamp 5-2 shrinks to a position close to the shell 3. Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention is provided with an outer wall fixing clamp 4 and an inner wall fixing clamp 5, which can clamp the outer wall and inner wall of the flange, thereby processing the outer side and inner hole of the flange, has good applicability, avoids repeated replacement of the clamp, and improves work efficiency; Second, the inner wall fixing clamp 5 of the present invention is movable, so that the inner wall fixing clamp 5 and the outer wall fixing clamp 4 are not on the same processing surface, so that they do not interfere with each other during processing, thereby ensuring processing quality and production safety; 3. The present invention adopts a driving motor 9 as a power input terminal, which has a simple and compact structure and reduces maintenance costs. The above are only preferred specific implementations of the present invention; however, the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and improved concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A flange turning fixture for machine tools, characterized in that: include, Rack(1); A tool support (2) is movably arranged at one end of the upper portion of the frame (1) and is used for mounting a tool; A clamping mechanism is arranged at the other end of the upper part of the frame (1), and the clamping mechanism comprises: Shell 1 (3), The outer wall fixing clamp (4) is fixedly arranged on one end of the housing (3) facing the tool support (2). The inner wall fixing clamp (5) is movably arranged in the housing (3) and is located at the center of the outer wall fixing clamp (4). The transmission mechanism is disposed in the housing 1 (3) and is used to drive the outer wall fixing clamp (4) and the inner wall fixing clamp (5) to perform a clamping operation. The transmission mechanism comprises a box (6), wherein a wall panel (7) is longitudinally arranged in the box (6) to divide the box (6) from left to right into a first cavity and a second cavity, wherein an input shaft (8) is transversely arranged at the lower end of the box (6), one end of the input shaft (8) is connected to the output end of a drive motor (9), an output shaft 1 (10) and an output shaft 2 (11) are transversely arranged in the first cavity from bottom to top, the left ends of the output shaft 1 (10) and the output shaft 2 (11) both extend out of the box (6), an output shaft 3 (12) is arranged in the second cavity, the right end of the output shaft 3 (12) extends out of the box (6), The input shaft (8) is provided with a gear 1 (13), a gear 2 (14), and a gear 3 (15). The gear 1 (13) and the gear 2 (14) are located in a first cavity, and the gear 3 (15) is located in a second cavity. An output shaft 1 (10) is transversely arranged in the middle of the first cavity. A first driven gear (16) is arranged on the output shaft 1 (10) via a needle bearing. A coupling gear 1 (22) is coaxially arranged on one side of the first driven gear (16). The coupling gear 1 (22) is movably arranged on the output shaft 1 (10) via a spline meshing. A clamping groove is arranged on the outer side of the coupling gear 1 (22) for connecting with a shift fork 1 (17). A docking groove 1 (18) is arranged on the side of the first driven gear (16) facing the docking gear 1 (22). A clamping block 1 (19) corresponding to the docking groove 1 (18) is arranged on the coupling gear 1 (22).

2. A flange turning fixture for machine tools according to claim 1, characterized in that: A second driven gear (20) is coaxially arranged on the other side of the coupling gear 1 (22); the second driven gear (20) is arranged on the output shaft 1 (10) via a needle bearing; a third driven gear (21) is arranged on the output shaft 2 (11) via a needle bearing; the third driven gear (21) is meshed with the second driven gear (20); a coupling gear 2 (23) is coaxially arranged on one side of the third driven gear (21); the coupling gear 2 (23) is movably arranged on the output shaft 2 (11) via a spline meshing; a clamping groove is arranged on the outer side of the coupling gear 2 (23) for connecting with a shift fork 2 (24); a docking groove 2 (25) is arranged on the side of the third driven gear (21) facing the coupling gear 1 (22); and a clamping block 2 (26) corresponding to the docking groove 2 (25) is arranged on the coupling gear 2 (23).

3. A flange turning fixture for machine tools according to claim 2, characterized in that: An output shaft three (12) is transversely arranged in the middle of the second cavity, a fourth driven gear (27) is arranged on the output shaft three (12) via a needle bearing, a coupling gear three (28) is coaxially arranged on one side of the fourth driven gear (27), the coupling gear three (28) is movably arranged on the output shaft three (12) via spline meshing, a clamping groove is arranged on the outer side of the coupling gear three (28) for connecting with a shift fork three (29), a docking groove three (30) is arranged on the side of the fourth driven gear (27) facing the coupling gear three (28), and a clamping block three (31) corresponding to the docking groove three (30) is arranged on the coupling gear three (28).

4. A flange turning fixture for machine tools according to claim 3, characterized in that: The top of the box body (6) is provided with openings (32) at positions corresponding to the connecting fork 1 (17), the connecting fork 2 (24) and the connecting fork 3 (29), and the three openings (32) are provided with telescopic rod 1 (33), the telescopic rod 2 (34) and the telescopic rod 3 (35), respectively. The extended end of the telescopic rod 1 (33) is connected to the connecting fork 1 (17), the extended end of the telescopic rod 2 (34) is connected to the connecting fork 2 (24), and the extended end of the telescopic rod 3 (35) is connected to the connecting fork 3 (29).

5. The flange turning fixture for machine tools according to claim 4, characterized in that: A dust cover (36) is provided at the opening (32).

6. The flange turning fixture for machine tools according to claim 1, characterized in that: The outer wall fixing clamp (4) comprises a plurality of sliding seats (4-1), the plurality of sliding seats (4-1) are evenly distributed in an annular manner on one side of the shell one (3), a sliding groove (4-2) is obliquely arranged in the sliding seat (4-1), a clamping block (4-3) is slidably arranged in the sliding groove (4-2), a push rod (4-4) is arranged at one end of the clamping block (4-3) facing the shell one (3), a roller is arranged at one end of the push rod (4-4) facing the clamping block (4-3), the push rod (4-4) passes through a through hole on the shell one (3) and extends into the shell one (3), a pressure plate (4-5) is meshedly arranged at the outer end of the output shaft three (12), a slider (4-6) is arranged on the outer side of the pressure plate (4-5), the slider (4-6) moves in a slide rail (4-7) on the inner side of the shell one (3), and the other end of the push rod (4-4) is connected to the pressure plate (4-5).

7. The flange turning fixture for machine tools according to claim 6, characterized in that: A guide cylinder (4-8) is arranged on the inner side of the housing 1 (3), and the push rod (4-4) slides in the guide cylinder (4-8).

8. The flange turning fixture for machine tools according to claim 1, characterized in that: The inner wall fixing clamp (5) comprises a cylinder (5-1), a clamp (5-2) is arranged at the front end of the cylinder (5-1), a transmission shaft (5-3) is arranged on the inner wall of the cylinder (5-1), a cylindrical hole (5-4) is arranged at one end of the transmission shaft (5-3) facing the housing (6), the cylindrical hole (5-4) meshes with the outer end of the output shaft one (10) through a spline, a gear four (5-5) is arranged at the outer end of the cylinder (5-1) close to the housing (6), a gear five (5-6) is arranged at the outer end of the output shaft two (11), the gear four (5-5) meshes with the gear five (5-6), an external thread is arranged on the outer side of the other end of the cylinder (5-1), a sleeve (5-7) is arranged at the joint of the housing one (3) and the cylinder (5-1), the inner wall of the sleeve (5-7) is arranged with an internal thread, and the cylinder (5-1) meshes and moves in the sleeve (5-7). The clamp (5-2) comprises a second shell (5-21), the second shell (5-21) being connected to one end of the cylinder (5-1), the outer wall of the second shell (5-21) being evenly provided with a plurality of slots (5-22), a mounting column (5-25) being provided inside the second shell (5-21), arc-shaped abutting blocks (5-23) corresponding in number to the slots (5-22) being evenly provided outside the mounting column (5-25), an arc-shaped pressing block (5-24) being rotatably provided inside the slot (5-22), a rubber pad being provided outside the arc-shaped pressing block (5-24), and the mounting column (5-25) being fixedly connected to one end of the transmission shaft (5-3).

Images