A centering fixture for flange processing that is convenient for disassembly and assembly

Abstract

The present invention discloses a centering fixture for flange processing that is convenient for disassembly and assembly, which relates to the technical field of flange processing; it includes a positioning seat, and a flipping and mounting mechanism is arranged on the outer side of the positioning seat for flipping and mounting a workpiece and preprocessing the workpiece; positioning mechanisms are arranged in an array on the positioning seat, and each positioning mechanism includes a clamping slide seat slidably mounted on the positioning seat. A sleeve is telescopically arranged on the clamping slide seat, and a clamping shaft is fixedly connected to the clamping slide seat, and the clamping shaft is located inside the sleeve; a fixing mechanism is arranged on the clamping slide seat for fixing the sleeve; a contact rod is telescopically arranged inside the sleeve, and a telescopic displacement sensor is connected between the contact rod and the sleeve for outputting and feeding back information on the surface defects of the clamping shaft; the present invention can perform convenient disassembly and assembly on the flange, has rich functions, and ensures the accuracy of centering and clamping.

Description

Technical Field

[0001] The present invention relates to the technical field of flange processing, and particularly relates to a centering fixture for flange processing that is convenient for disassembly and assembly. Background Art

[0002] A flange refers to a circular component used in mechanical engineering to connect devices such as pipes, valves, and pumps. The flange is fixed to other components through bolts and is commonly used for pipe connection, sealing, and support. The design of the flange takes into account factors such as pressure and temperature, so they have different standards and materials to adapt to different working environments; the processing of the flange is complex and involves multiple processes. During the later finishing process, machine tools are required for operations such as drilling and milling the surface. In each processing link, it is necessary to center and clamp the flange. The existing centering fixtures are not convenient to use, difficult to disassemble and assemble, and have a single function; based on this, the present invention proposes a positioning fixture that can disassemble and assemble the flange conveniently, has rich functions, and ensures the accuracy of centering and clamping. Summary of the Invention

[0003] Aiming at the above technical problems, the present invention can disassemble and assemble the flange conveniently, has rich functions, and ensures the accuracy of centering and clamping.

[0004] The implementation solution of the present invention is as follows: A centering fixture for flange processing that is convenient for disassembly and assembly includes a positioning seat. A flipping and mounting mechanism is arranged on the outer side of the positioning seat for flipping and mounting the workpiece and preprocessing the workpiece; positioning mechanisms are arranged in an array on the positioning seat. The positioning mechanism includes a clamping slide seat slidably mounted on the positioning seat. A sleeve is telescopically arranged on the clamping slide seat, and a clamping shaft is fixedly connected to the clamping slide seat. The clamping shaft is located inside the sleeve; a fixing mechanism is arranged on the clamping slide seat for fixing the sleeve; a contact rod is telescopically arranged inside the sleeve, and a telescopic displacement sensor is connected between the contact rod and the sleeve for outputting and feeding back information on the surface defects of the clamping shaft.

[0005] Further, the flipping and mounting mechanism includes a flipping frame rotatably mounted on the positioning seat and a flipping motor fixedly arranged on the positioning seat. The flipping motor is used to drive the flipping frame. A preprocessing electric cylinder is arranged on the flipping frame, and a processing motor and a processing part are arranged on the telescopic rod of the preprocessing electric cylinder. The processing motor is used to drive the processing part.

[0006] Further, a turntable is rotatably mounted on the flipping frame, and a first motor is arranged on the flipping frame. A first gear is arranged on the output shaft of the first motor, and the first gear meshes with the turntable. A connecting disc is arranged on the turntable, and a moving electric cylinder is arranged on the connecting disc. An installation seat is arranged on the telescopic rod of the moving electric cylinder, and a second motor is arranged on the installation seat. A second turntable is arranged on the output shaft of the second motor, and a first connecting rod is rotatably mounted on the second turntable. One end of the first connecting rod is rotatably connected with a positioning sliding seat, and the positioning sliding seat is slidably connected with the installation seat; a positioning shaft is arranged on the positioning sliding seat for positioning and installing a workpiece.

[0007] Further, slots are arrayed on the positioning seat, and slot plates are arranged in the slots. An adsorber is arranged in the central area of the positioning seat for adsorbing and collecting waste chips in the slots; a clamping sliding seat on the positioning mechanism is slidably arranged on the slot plates. A fourth motor is arranged at the bottom of the positioning seat, and a fourth gear disc is arranged on the output shaft of the fourth motor. A fifth lead screw is rotatably arrayed at the bottom of the positioning seat, and a fifth gear is arranged at one end of the fifth lead screw. The fifth gear meshes with the fourth gear disc; the fifth lead screw and the clamping sliding seat on the positioning mechanism form a screw pair.

[0008] Further, the positioning mechanism includes a first spring connected between the sleeve and the clamping sliding seat. A sliding rod is arranged on the sleeve, and the sliding rod is slidably matched with the clamping sliding seat. A fixing hole is opened on the clamping sliding seat, and the fixing mechanism cooperates with the fixing hole for fixing. A first roller is also arranged on the sleeve.

[0009] Further, the fixing mechanism includes a fixing shaft telescopically arranged on the clamping sliding seat. A second roller is arranged at one end of the fixing shaft, and a second spring is connected between the fixing shaft and the clamping sliding seat; a control mechanism is arranged on the positioning seat for controlling the movement of the fixing mechanism and the sleeve.

[0010] Further, the control mechanism includes a control gear ring rotatably mounted on the positioning seat, and a third motor arranged on the positioning seat. A third gear is arranged on the output shaft of the third motor, and the third gear meshes with the control gear ring.

[0011] Further, a first contact part and a second contact part are arranged on the control gear ring. An inner arc surface and an outer arc surface are arranged on the second contact part, and the inner arc surface and the outer arc surface are smoothly connected. An inclined arc surface is arranged on the first contact part. The first roller moves on the inclined arc surface to move the sleeve; the second roller moves from the inner arc surface to the outer arc surface, and the fixing shaft telescopically moves.

[0012] The beneficial effects of the present invention compared with the prior art are as follows: (1) The position of the machining part can be controlled by the pre-processing electric cylinder, and the machining motor drives the machining part to work, enabling grinding treatment on the outer side of the workpiece to remove uneven surfaces and impurities, thereby ensuring the accuracy of subsequent clamping and centering. Specifically, when the first motor operates, the turntable rotates, driving the workpiece to perform circular motion; (2) The clamping slide seats are radially moved, the lower end surface of the workpiece is supported by the sleeve, and the circumferential surface of the workpiece is positioned by the clamping shaft; during the machining of the workpiece, waste chips fall on the positioning seat, and when they fall within the area of the trough plate, they can be adsorbed and collected by the adsorber; (3) By controlling the rotation of the gear ring, the flipping frame first passes through the inner arc surface on the second contact part. When the second roller moves from the inner arc surface to the outer arc surface, the fixed shaft moves telescopically, that is, the fixed shaft separates from the fixing hole on the sliding rod, releasing the fixation of the sleeve. Then, the first roller moves on the inclined arc surface to move the sleeve; the contact rod contacts the circumferential area for clamping on the clamping shaft, and the contact rod moves telescopically along the circumferential surface of the clamping shaft. That is, in the case of surface defects such as pits and deformations, the telescopic displacement sensor outputs and feeds back the telescopic displacement signal of the contact rod to judge the surface defect condition of the clamping shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0014] Figure 2 It is a schematic diagram of the installation structure of the flipping frame of the present invention.

[0015] Figure 3 It is a schematic diagram of the installation structure of the mounting seat of the present invention.

[0016] Figure 4 It is a schematic diagram of the installation structure of the positioning seat of the present invention.

[0017] Figure 5 It is a schematic diagram of the partial structure of the positioning seat of the present invention.

[0018] Figure 6 It is a schematic diagram of the bottom installation structure of the positioning seat of the present invention.

[0019] Figure 7 It is a schematic diagram of the structure of the clamping slide seat of the present invention.

[0020] Figure 8 It is a schematic diagram of the structure of the sleeve of the present invention.

[0021] Figure 9 It is a schematic diagram of the partial structure of the control gear ring of the present invention.

[0022] Figure 10 It is of the present invention Figure 4 Schematic diagram of the structure at the A mark in

[0023] Reference numerals: 1 - positioning base; 2 - flipping motor; 3 - flipping frame; 4 - pre - processing electric cylinder; 5 - processing motor; 6 - processing part; 7 - motor 1; 8 - gear 1; 9 - turntable; 10 - moving electric cylinder; 11 - connecting plate; 12 - mounting seat; 13 - motor 2; 14 - turntable 2; 15 - connecting rod 1; 16 - positioning sliding seat; 17 - positioning shaft; 18 - motor 3; 19 - gear 3; 20 - control gear ring; 21 - adsorber; 22 - groove plate; 23 - motor 4; 24 - gear disk 4; 25 - lead screw 5; 26 - gear 5; 27 - clamping sliding seat; 28 - clamping shaft; 29 - sleeve; 30 - spring 1; 31 - roller 1; 32 - sliding rod; 33 - contact rod; 34 - roller 2; 35 - fixed shaft; 36 - spring 2; 2001 - contact part 1; 2002 - contact part 2. Detailed implementation manners

[0024] Example: As Figures 1 to 10 shown, a centering fixture for flange processing that is convenient for disassembly and assembly includes a positioning base 1. A flipping and mounting mechanism is arranged on the outer side of the positioning base 1, which is used for flipping and mounting the workpiece and pre - processing the workpiece. A positioning mechanism is arranged in an array on the positioning base 1. The positioning mechanism includes a clamping sliding seat 27 slidably mounted on the positioning base 1. A sleeve 29 is telescopically arranged on the clamping sliding seat 27, and a clamping shaft 28 is fixedly connected to the clamping sliding seat 27. The clamping shaft 28 is located inside the sleeve 29. A fixing mechanism is arranged on the clamping sliding seat 27 for fixing the sleeve 29. A contact rod 33 is telescopically arranged inside the sleeve 29, and a telescopic displacement sensor is connected between the contact rod 33 and the sleeve 29, which is used for outputting and feeding back information on the surface defects of the clamping shaft 28.

[0025] The flipping and mounting mechanism includes a flipping frame 3 rotatably mounted on the positioning base 1, and a flipping motor 2 fixedly arranged on the positioning base 1. The flipping motor 2 is used to drive the flipping frame 3. A pre - processing electric cylinder 4 is arranged on the flipping frame 3. A processing motor 5 and a processing part 6 are arranged on the telescopic rod of the pre - processing electric cylinder 4. The processing motor 5 is used to drive the processing part 6. A turntable 9 is rotatably mounted on the flipping frame 3, and a motor 1 7 is arranged on the flipping frame 3. A gear 1 8 is arranged on the output shaft of the motor 1 7. The gear 1 8 meshes with the turntable 9. A connecting plate 11 is arranged on the turntable 9. A moving electric cylinder 10 is arranged on the connecting plate 11. A mounting seat 12 is arranged on the telescopic rod of the moving electric cylinder 10. A motor 2 13 is arranged on the mounting seat 12. A turntable 2 14 is arranged on the output shaft of the motor 2 13. A connecting rod 1 15 is rotatably mounted on the turntable 2 14. One end of the connecting rod 1 15 is rotatably connected to a positioning sliding seat 16. The positioning sliding seat 16 is slidably connected to the mounting seat 12. A positioning shaft 17 is arranged on the positioning sliding seat 16 for positioning and mounting the workpiece.

[0026] The positioning base 1 is arrayed with slots, and a slot plate 22 is arranged in the slot positions. An adsorber 21 is arranged in the central area of the positioning base 1 for adsorbing and collecting waste chips in the slots. The clamping slider 27 on the positioning mechanism is slidably arranged on the slot plate 22. A fourth motor 23 is arranged at the bottom of the positioning base 1, and a fourth gear 24 is arranged on the output shaft of the fourth motor 23. Five lead screws 25 are rotationally arrayed at the bottom of the positioning base 1, and a fifth gear 26 is arranged at one end of each lead screw 25. The fifth gear 26 meshes with the fourth gear 24. The lead screw 25 and the clamping slider 27 on the positioning mechanism form a screw pair. The positioning mechanism includes a first spring 30 connected between the sleeve 29 and the clamping slider 27. A slide bar 32 is arranged on the sleeve 29, and the slide bar 32 is slidably matched with the clamping slider 27. A fixing hole is opened on the clamping slider 27, and the fixing mechanism is matched with the fixing hole for fixing. A first roller 31 is also arranged on the sleeve 29.

[0027] The fixing mechanism includes a fixing shaft 35 telescopically arranged on the clamping slider 27. A second roller 34 is arranged at one end of the fixing shaft 35, and a second spring 36 is connected between the fixing shaft 35 and the clamping slider 27. A control mechanism is arranged on the positioning base 1 for controlling the movement of the fixing mechanism and the sleeve 29. The control mechanism includes a control gear ring 20 rotatably installed on the positioning base 1, and a third motor 18 arranged on the positioning base 1. A third gear 19 is arranged on the output shaft of the third motor 18, and the third gear 19 meshes with the control gear ring 20. A first contact part 2001 and a second contact part 2002 are arranged on the control gear ring 20. An inner arc surface and an outer arc surface are arranged on the second contact part 2002, and the inner arc surface and the outer arc surface are smoothly connected. An inclined arc surface is arranged on the first contact part 2001. The first roller 31 moves on the inclined arc surface to move the sleeve 29. The second roller 34 moves from the inner arc surface to the outer arc surface, and the fixing shaft 35 telescopically moves.

[0028] Operating principle: The workpiece is placed on the positioning shaft 17. By the operation of the second motor 13, the second turntable 14 rotates. Under the connection action of the first connecting rod 15, the positioning slider 16 moves, and the workpiece can be supported and positioned. The position of the machining part 6 can be controlled by the pre-processing electric cylinder 4, and the machining motor 5 drives the machining part 6 to work, and the outer side of the workpiece can be ground, that is, the uneven plane and impurities are removed, so as to ensure the accuracy of subsequent clamping and centering. Specifically, by the operation of the first motor 7, the turntable 9 rotates, and the workpiece can be driven to perform a circular motion.

[0029] Further, by operating the flipping motor 2, the flipping frame 3 flips, i.e., the workpiece flips towards the positioning seat 1 and is located above the positioning seat 1. The movement of the workpiece is controlled by the connecting plate 11, i.e., the workpiece is located inside each positioning mechanism. By operating the fourth motor 23, the fourth gear disk 24 rotates, and then the fifth lead screw 25 rotates, causing each clamping slider 27 to move radially. The lower end surface of the workpiece is supported by the sleeve 29, and the circumferential surface of the workpiece is positioned by the clamping shaft 28. When machining the workpiece, if the waste chips fall on the positioning seat 1 and in the area where the trough plate 22 is located, they can be adsorbed and collected by the adsorber 21.

[0030] During disassembly and assembly, the flipping frame 3 flips to transfer the workpiece from the positioning seat 1. To ensure the accuracy of centering and clamping, the surface of the clamping shaft 28 can be periodically inspected. That is, the clamping shaft 28 is in contact with the circumferential area of the workpiece. Surface defects on the clamping shaft 28 will affect the clamping centering effect. Specifically, by operating the third motor 18, the gear ring 20 is controlled to rotate. The flipping frame 3 first passes through the inner arc surface on the second contact part 2002. When the second roller 34 moves from the inner arc surface to the outer arc surface, the fixed shaft 35 moves telescopically, i.e., the fixed shaft 35 separates from the fixing hole on the slide rod 32, releasing the fixation of the sleeve 29. Then the first roller 31 moves on the inclined arc surface to move the sleeve 29. The contact rod 33 contacts the circumferential area of the clamping shaft 28 for clamping, and the contact rod 33 moves telescopically along with the circumferential surface of the clamping shaft 28. That is, when surface defects such as pits and deformations occur, the telescopic displacement sensor outputs and feeds back the telescopic displacement signal of the contact rod 33 to judge the surface defect condition of the clamping shaft 28.

[0031] The present invention is not limited to the above specific embodiments. Those skilled in the art can make various changes starting from the above concepts without creative labor, and all fall within the protection scope of the present invention.

Claims

1. A centering fixture for flange processing that is convenient for disassembly and assembly, including a positioning seat (1), characterized in that: A flipping and mounting mechanism is provided on the outer side of the positioning base (1) for flipping and mounting workpieces and preprocessing the workpieces; positioning mechanisms are arranged in an array on the positioning base (1). The positioning mechanism includes a clamping slide base (27) slidably mounted on the positioning base (1). A sleeve (29) is telescopically arranged on the clamping slide base (27), and a clamping shaft (28) is fixedly connected to the clamping slide base (27). The clamping shaft (28) is located inside the sleeve (29); a fixing mechanism is provided on the clamping slide base (27) for fixing the sleeve (29); a contact rod (33) is telescopically arranged inside the sleeve (29), and a telescopic displacement sensor is connected between the contact rod (33) and the sleeve (29) for outputting and feeding back information on the surface defects of the clamping shaft (28). Slots are arrayed on the positioning base (1), and a slot plate (22) is arranged in the slots. An adsorber (21) is arranged in the central area of the positioning base (1) for adsorbing and collecting waste chips in the slots; the clamping slide base (27) on the positioning mechanism is slidably arranged on the slot plate (22). A motor four (23) is arranged at the bottom of the positioning base (1). A gear disk four (24) is arranged on the output shaft of the motor four (23), and a lead screw five (25) is rotationally arrayed at the bottom of the positioning base (1). A gear five (26) is arranged at one end of the lead screw five (25), and the gear five (26) meshes with the gear disk four (24). The lead screw five (25) and the clamping slide base (27) on the positioning mechanism form a screw pair. The positioning mechanism includes a spring one (30) connected between the sleeve (29) and the clamping slide base (27). A slide bar (32) is arranged on the sleeve (29), and the slide bar (32) is slidably matched with the clamping slide base (27). A fixing hole is formed in the clamping slide base (27), and the fixing mechanism cooperates with the fixing hole for fixing. A roller one (31) is also arranged on the sleeve (29). The fixing mechanism includes a fixing shaft (35) telescopically arranged on the clamping slide base (27). A roller two (34) is arranged at one end of the fixing shaft (35), and a spring two (36) is connected between the fixing shaft (35) and the clamping slide base (27); a control mechanism is arranged on the positioning base (1) for controlling the movement of the fixing mechanism and the sleeve (29). The control mechanism includes a control gear ring (20) rotatably mounted on the positioning base (1), and a motor three (18) arranged on the positioning base (1). A gear three (19) is arranged on the output shaft of the motor three (18), and the gear three (19) meshes with the control gear ring (20). The control gear ring (20) is provided with a contact part one (2001) and a contact part two (2002). The contact part two (2002) is provided with an inner arc surface and an outer arc surface, and the inner arc surface and the outer arc surface are smoothly connected. The contact part one (2001) is provided with an inclined arc surface. The roller one (31) moves on the inclined arc surface to move the sleeve (29); the roller two (34) moves from the inner arc surface to the outer arc surface, and the fixing shaft (35) telescopically moves.

2. The centering fixture for flange processing that is convenient for disassembly and assembly according to claim 1, wherein: The flipping and mounting mechanism includes a flipping frame (3) rotatably mounted on a positioning seat (1), and a flipping motor (2) fixedly arranged on the positioning seat (1). The flipping motor (2) is used to drive the flipping frame (3). A pre-processing electric cylinder (4) is arranged on the flipping frame (3), and a processing motor (5) and a processing part (6) are arranged on the telescopic rod of the pre-processing electric cylinder (4). The processing motor (5) is used to drive the processing part (6).

3. The centering fixture for flange processing that is convenient for disassembly and assembly according to claim 2, characterized in that: A turntable (9) is rotatably mounted on the flipping frame (3), and a first motor (7) is arranged on the flipping frame (3). A first gear (8) is arranged on the output shaft of the first motor (7). The first gear (8) meshes with the turntable (9). A connecting plate (11) is arranged on the turntable (9). A moving electric cylinder (10) is arranged on the connecting plate (11). A mounting seat (12) is arranged on the telescopic rod of the moving electric cylinder (10). A second motor (13) is arranged on the mounting seat (12). A second turntable (14) is arranged on the output shaft of the second motor (13). A first connecting rod (15) is rotatably mounted on the second turntable (14). One end of the first connecting rod (15) is rotatably connected with a positioning sliding seat (16). The positioning sliding seat (16) is slidably connected with the mounting seat (12); A positioning shaft (17) is arranged on the positioning sliding seat (16) for positioning and mounting the workpiece.

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