Flange machining centering clamp convenient to disassemble and assemble

Abstract

The invention discloses a flange machining centering clamp convenient to disassemble and assemble, and relates to the technical field of flange machining. Comprising a positioning seat, and a turnover mounting mechanism is arranged on the outer side of the positioning seat and used for turnover mounting of a workpiece and pretreatment of the workpiece; positioning mechanisms are arranged on the positioning seat in an array mode, each positioning mechanism comprises a clamping sliding seat installed on the positioning seat in a sliding mode, a sleeve is arranged on each clamping sliding seat in a telescopic mode, each clamping sliding seat is fixedly connected with a clamping shaft, and each clamping shaft is located on the inner side of the corresponding sleeve; a fixing mechanism is arranged on the clamping sliding seat and is used for fixing the sleeve; a contact rod is telescopically arranged in the sleeve, and a telescopic displacement sensor is connected between the contact rod and the sleeve and used for outputting and feeding back surface defect information of the clamping shaft; the flange can be conveniently disassembled and assembled, the functions are rich, and the centering and clamping accuracy is guaranteed.

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 an annular component used in mechanical engineering to connect devices such as pipelines, valves, and pumps. Flanges are fixed to other components through bolts and are commonly used for pipeline connection, sealing, and support. The design of flanges 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 flanges 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: a centering fixture for flange processing that is convenient for disassembly and assembly, including 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 feedbacking 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 provided on the flipping frame. A first gear is provided on the output shaft of the first motor, and the first gear meshes with the turntable. A connecting plate is provided on the turntable, a mobile electric cylinder is provided on the connecting plate, a mounting seat is provided on the telescopic rod of the mobile electric cylinder, a second motor is provided on the mounting seat, a second turntable is provided on the output shaft of the second motor, a first connecting rod is rotatably mounted on the second turntable, one end of the first connecting rod is rotatably connected to a positioning sliding seat, and the positioning sliding seat is slidably connected to the mounting seat; a positioning shaft is provided on the positioning sliding seat for positioning and mounting the workpiece.

[0007] Further, a plurality of slots are arrayed on the positioning seat, a slot plate is provided in the slot positions, and an adsorber is provided 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 provided on the slot plate, a fourth motor is provided at the bottom of the positioning seat, a fourth gear disk is provided on the output shaft of the fourth motor, and a fifth lead screw is rotatably arrayed at the bottom of the positioning seat. A fifth gear is provided at one end of the fifth lead screw, and the fifth gear meshes with the fourth gear disk; 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 provided on the sleeve, and the sliding rod is slidably matched with the clamping sliding seat. A fixing hole is provided on the clamping sliding seat, and the fixing mechanism cooperates with the fixing hole for fixing. A first roller is also provided on the sleeve.

[0009] Further, the fixing mechanism includes a fixing shaft telescopically provided on the clamping sliding seat. A second roller is provided 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 provided 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 provided on the positioning seat. A third gear is provided 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 provided on the control gear ring. An inner arc surface and an outer arc surface are provided on the second contact part, and the inner arc surface and the outer arc surface are smoothly connected. An inclined arc surface is provided 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 processing part can be controlled by the pre-processing electric cylinder, and the processing motor drives the processing part to work, enabling grinding treatment on the outer side of the workpiece to remove uneven surfaces and impurities, thus 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 sliders 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 processing 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, 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 to determine 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 slider 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 - tilting motor; 3 - tilting frame; 4 - pre - processing electric cylinder; 5 - processing motor; 6 - processing unit; 7 - motor one; 8 - gear one; 9 - turntable; 10 - moving electric cylinder; 11 - connecting plate; 12 - mounting seat; 13 - motor two; 14 - turntable two; 15 - connecting rod one; 16 - positioning slide; 17 - positioning shaft; 18 - motor three; 19 - gear three; 20 - control gear ring; 21 - adsorber; 22 - groove plate; 23 - motor four; 24 - gear disk four; 25 - lead screw five; 26 - gear five; 27 - clamping slide; 28 - clamping shaft; 29 - sleeve; 30 - spring one; 31 - roller one; 32 - slide bar; 33 - contact rod; 34 - roller two; 35 - fixed shaft; 36 - spring two; 2001 - contact part one; 2002 - contact part two. Detailed implementation manners

[0024] Embodiment: As Figures 1 to 10 shown, a centering fixture for flange processing that is convenient for disassembly and assembly includes a positioning base 1. An overturning installation mechanism is arranged on the outer side of the positioning base 1 for overturning and installing workpieces and pre - processing the workpieces. A positioning mechanism is arranged in an array on the positioning base 1. The positioning mechanism includes a clamping slide 27 slidably installed on the positioning base 1. A sleeve 29 is telescopically arranged on the clamping slide 27, and a clamping shaft 28 is fixedly connected to the clamping slide 27. The clamping shaft 28 is located inside the sleeve 29. A fixing mechanism is arranged on the clamping slide 27 for fixing the sleeve 29. A contact rod 33 is telescopically arranged inside the sleeve 29. 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.

[0025] The overturning installation mechanism includes a tilting frame 3 rotatably installed on the positioning base 1 and a tilting motor 2 fixedly arranged on the positioning base 1. The tilting motor 2 is used to drive the tilting frame 3. A pre - processing electric cylinder 4 is arranged on the tilting frame 3. A processing motor 5 and a processing unit 6 are arranged on the telescopic rod of the pre - processing electric cylinder 4. The processing motor 5 is used to drive the processing unit 6. A turntable 9 is rotatably installed on the tilting frame 3. A motor one 7 is arranged on the tilting frame 3. A gear one 8 is arranged on the output shaft of the motor one 7. The gear one 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. An installation seat 12 is arranged on the telescopic rod of the moving electric cylinder 10. A motor two 13 is arranged on the installation seat 12. A turntable two 14 is arranged on the output shaft of the motor two 13. A connecting rod one 15 is rotatably installed on the turntable two 14. One end of the connecting rod one 15 is rotatably connected to a positioning slide 16. The positioning slide 16 is slidably connected to the installation seat 12. A positioning shaft 17 is arranged on the positioning slide 16 for positioning and installing workpieces.

[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 slide 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. And a fifth lead screw 25 is rotationally arrayed at the bottom of the positioning base 1. A fifth gear 26 is arranged at one end of the fifth lead screw 25, and the fifth gear 26 meshes with the fourth gear 24. The fifth lead screw 25 and the clamping slide 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 slide 27. A slide bar 32 is arranged on the sleeve 29, and the slide bar 32 is slidably matched with the clamping slide 27. A fixing hole is formed on the clamping slide 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 slide 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 slide 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, and 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 slide 16 moves, and the workpiece can be supported and positioned. The position of the processing part 6 can be controlled by the pre-processing electric cylinder 4, and the processing motor 5 drives the processing part 6 to work, and the outer side of the workpiece can be ground, that is, the uneven planes 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 tilting motor 2, the tilting frame 3 tilts, i.e., the workpiece tilts 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 slide 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 tilting frame 3 tilts 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 tilting 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 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 situation 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 flange processing centering fixture that is easy to disassemble and assemble, comprising a positioning seat (1), characterized in that: A flip installation mechanism is arranged on the outer side of the positioning seat (1) for flipping and installing a workpiece and pre-processing the workpiece; a positioning mechanism is arranged in an array on the positioning seat (1), the positioning mechanism comprising a clamping slide (27) slidably mounted on the positioning seat (1), a sleeve (29) being telescopically arranged on the clamping slide (27), and a clamping shaft (28) being fixedly connected to the clamping slide (27), the clamping shaft (28) being located on the inner side of the sleeve (29); a fixing mechanism is arranged on the clamping slide (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 surface defect information of the clamping shaft (28).

2. The flange processing centering fixture that is easy to disassemble and assemble according to claim 1 is characterized in that: The flip installation mechanism comprises a flip frame (3) rotatably mounted on a positioning seat (1), and a flip motor (2) fixedly mounted on the positioning seat (1), the flip motor (2) being used to drive the flip frame (3), a pre-processing electric cylinder (4) being arranged on the flip frame (3), a processing motor (5) and a processing part (6) being arranged on a telescopic rod of the pre-processing electric cylinder (4), and the processing motor (5) being used to drive the processing part (6).

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

4. The flange processing centering fixture that is easy to disassemble and assemble according to claim 1 is characterized in that: The positioning seat (1) is provided with a groove array, a groove plate (22) is arranged in the groove position, and an absorber (21) is arranged in the central area of ​​the positioning seat (1) for absorbing and collecting waste chips in the groove; a clamping slide (27) on the positioning mechanism is slidably arranged on the groove plate (22), a motor four (23) is arranged at the bottom of the positioning seat (1), a gear disk four (24) is arranged on the output shaft of the motor four (23), and a screw rod five (25) is rotatably arranged at the bottom of the positioning seat (1), a gear five (26) is arranged at one end of the screw rod five (25), and the gear five (26) is meshed with the gear disk four (24); the screw rod five (25) and the clamping slide (27) on the positioning mechanism form a spiral pair.

5. The flange processing centering fixture that is easy to disassemble and assemble according to claim 4 is characterized in that: The positioning mechanism comprises a spring (30) connected between the sleeve (29) and the clamping slide (27); a slide rod (32) is provided on the sleeve (29); the slide rod (32) and the clamping slide (27) are slidably matched; a fixing hole is provided on the clamping slide (27); the fixing mechanism cooperates with the fixing hole for fixing; and a roller (31) is also provided on the sleeve (29).

6. The conveniently disassembled flange processing centering fixture according to claim 5 is characterized in that: The fixing mechanism comprises a fixing shaft (35) telescopically arranged on the clamping slide (27), a second roller (34) being arranged at one end of the fixing shaft (35), and a second spring (36) being connected between the fixing shaft (35) and the clamping slide (27); a control mechanism is arranged on the positioning seat (1) for controlling the movement of the fixing mechanism and the sleeve (29).

7. The conveniently disassembled flange processing centering fixture according to claim 6 is characterized in that: The control mechanism comprises a control gear ring (20) rotatably mounted on the positioning seat (1), and a motor three (18) arranged on the positioning seat (1), a gear three (19) being arranged on the output shaft of the motor three (18), and the gear three (19) being meshed with the control gear ring (20).

8. The flange processing centering fixture that is easy to disassemble and assemble according to claim 7 is characterized in that: The control gear ring (20) is provided with a contact portion 1 (2001) and a contact portion 2 (2002); the contact portion 2 (2002) is provided with an inner arc surface and an outer arc surface, the inner arc surface and the outer arc surface are smoothly connected; the contact portion 1 (2001) is provided with an inclined arc surface; the roller 1 (31) moves on the inclined arc surface to move the sleeve (29); the roller 2 (34) moves from the inner arc surface to the outer arc surface, and the fixed shaft (35) moves telescopically.

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