Lathe fixture for waste heat boiler pipe joint

Abstract

The present application relates to a lathe fixture for a waste heat boiler pipe joint, belonging to the technical field of boiler equipment. The present application comprises a bottom plate fixed by a chuck, the bottom plate adopts a perforated plate with through holes arranged on the plate surface, further comprising a first jaw arranged on the bottom plate away from the chuck end, a second jaw arranged on the bottom plate at an oblique position of the first jaw, the first jaw is used for clamping the short straight pipe section of the pipe joint and making the center line of the short straight pipe section of the pipe joint coaxial with the center line of the chuck, and the second jaw is positioned by the through hole and used for clamping the long straight pipe section of the pipe joint. The present application has simple structure and is easy to operate, solves the problems that a tooling can only process a pipe joint of one pipe diameter and bend angle, and the tooling does not have universality, and greatly reduces the processing cost.

Description

TECHNICAL FIELD

[0001] The present application relates to a lathe fixture for waste heat boiler pipe joint, belonging to the technical field of boiler equipment. BACKGROUND

[0002] In the manufacturing process of the pipe joint of the waste heat boiler, due to the special structure of part of the pipe joint, the bending straight section is short, and according to the previous processing mode, the pipe joint cannot be bent after the pipe joint groove is processed, so the processing technology of bending the pipe first and then processing the pipe joint groove is needed, and the existing pipe joint fixture is shown in the accompanying drawings. Figure 1 As shown in the accompanying drawings, a pipe groove in the shape of the pipe joint 11 is milled on a whole metal base plate 10, the pipe joint 11 is placed in the pipe groove, and then a metal clamping plate 12 is clamped, and then the metal base plate 10 is clamped and fixed by the lathe chuck, and the groove is processed by the lathe tool.

[0003] The main defects of the above-mentioned fixture are that: (1) the metal base plate 10 needs to be milled by a milling machine, and the processing cost is high; (2) the fixture does not have universality, and separate fixtures need to be made for pipe joints of different specifications and different angles; (3) the pipe joint needs to be matched with the pipe groove on the metal base plate 10, and the bending processing precision of the pipe joint is required to be high.

[0004] Therefore, the development of a lathe fixture with simple structure, convenient operation, easy installation and debugging, strong universality, and capable of processing pipe joints of different specifications and different bending angles meets the actual needs of pipe joint processing. SUMMARY

[0005] The present application mainly solves the problems of the prior art that the lathe fixture does not have universality, the operation is difficult and the processing cost is high when processing the pipe joint groove of the waste heat boiler, and provides a lathe fixture for the pipe joint of the waste heat boiler, which has simple structure, convenient operation and can process pipe joints of different specifications and different bending angles.

[0006] The present application mainly solves the above technical problems through the following technical scheme: the present application includes a base plate that can be clamped and fixed by a chuck, characterized in that the base plate is a multi-hole plate with through holes arranged on the surface of the plate, and further includes a first clamping jaw positioned through the through hole and installed on one end of the base plate away from the chuck, and a second clamping jaw installed at an oblique position of the first clamping jaw, the first clamping jaw is used to clamp the short straight pipe section of the pipe joint, and the second clamping jaw is used to clamp the long straight pipe section of the pipe joint, and the pipe joint can be clamped and fixed to the base plate by the first clamping jaw and the second clamping jaw.

[0007] As a preferred embodiment, the second clamping jaw includes a U-shaped mounting seat fixedly connected to the base plate through a connecting bolt in the through hole, a clamping component arranged in the hollow position inside the U-shaped mounting seat, and a screw mechanism separately arranged at the raised position of both ends of the U-shaped mounting seat, the clamping component is driven by the screw mechanism to perform the action of clamping or releasing the long straight pipe section of the pipe joint.

[0008] As preferred, the clamping component comprises a pair of clamping blocks opposite to each other, the clamping blocks are slidably connected with the U-shaped mounting base through a sliding mechanism, the sliding mechanism comprises L-shaped guide rods arranged on the outer walls of the clamping blocks respectively, guide grooves arranged on the bottom of the U-shaped mounting base and parallel to the bottom plate, the L-shaped guide rods have protruding parts embedded in the guide grooves, and the two clamping blocks can be driven to move along the guide grooves to approach or move away from each other through a screw mechanism.

[0009] As preferred, the screw mechanism comprises a driving screw threadedly connected with the top plate of the U-shaped mounting base, two threaded rods with one end fixedly connected with the clamping blocks, and gears sleeved on the threaded rods, the threaded rods are threadedly connected with the side plates of the U-shaped mounting base, the driving screw is engaged with the gear teeth of the gears between the two gears, and when the driving screw rotates, the threaded rods are driven to rotate through the gears and the clamping blocks are driven to move along the guide grooves through the threaded rods.

[0010] As preferred, the first clamping jaw comprises upper and lower clamping jaws opposite to each other, and adjusting studs threadedly connected with the upper and lower clamping jaws, the lower clamping jaw is fixed to the bottom plate, and the opening distance between the upper and lower clamping jaws is adjusted through the adjusting studs.

[0011] As preferred, the first clamping jaw further comprises guide columns arranged on the two sides of the adjusting studs in parallel, the guide columns are fixedly connected with the upper clamping jaw and penetrate through the lower clamping jaw and the bottom plate.

[0012] As preferred, the angle adjusting mechanism arranged on the bottom plate and laterally to the U-shaped mounting base is further arranged, and the angle adjusting mechanism is used for limiting rotation of the U-shaped mounting base relative to the bottom plate.

[0013] As preferred, the angle adjusting mechanism comprises a clamping block fixed to the bottom plate through an adjusting bolt, a pressing plate provided with an adjusting groove, the groove width of the adjusting groove matches the outer diameter of the adjusting bolt, the pressing plate is fixedly connected with the bottom plate through a bolt and connected with the clamping block through the adjusting bolt in the adjusting groove, one end of the clamping block is threadedly connected with the adjusting bolt and the other end is abutted against the side wall of the U-shaped mounting base, the clamping block rotates around the adjusting bolt when the adjusting bolt moves along the adjusting groove, and the clamping block is fastened to the bottom plate through the pressing plate and the adjusting bolt to limit the rotation of the U-shaped mounting base relative to the bottom plate.

[0014] The present application has the following advantages:

[0015] The present application adopts the perforated plate with through holes arranged on the plate surface as the bottom plate, the first clamping jaw and the second clamping jaw are arranged on the bottom plate, the first clamping jaw and the second clamping jaw can be respectively used for clamping the short straight pipe section and the long straight pipe section of the pipe joint, the clamping jaw can be used for clamping pipe joints with different pipe diameters, the position and angle of the second clamping jaw can be adjusted to adapt to pipe joints with different elbow angles, and thus the present application greatly increases the versatility of the clamp and reduces the cost of pipe joint groove machining compared with the prior art.

[0016] Further, the second clamping jaw comprises a clamping part, a screw mechanism for driving the clamping block and a sliding mechanism for guiding the clamping block to move along the guide groove, the relative movement of the two clamping blocks is controlled to clamp or release the long straight pipe section of the pipe joint, the structure is reasonable, simple and effective;

[0017] Further, the first clamping jaw comprises an upper clamping jaw, a lower clamping jaw and an adjusting stud, the opening distance of the upper clamping jaw and the lower clamping jaw is adjusted by the adjusting stud to clamp or release the short straight section of the pipe joint, the structure is simple and effective, and the operation is also relatively convenient.

[0018] Further, an angle adjusting mechanism is arranged on the side of the second clamping jaw, the angle adjusting mechanism is provided with a clamping fastener fixed to the bottom plate, the clamping fastener abuts against the U-shaped mounting seat, the second clamping jaw can be adjusted in angle through the cooperation of the clamping fastener and the U-shaped mounting seat and is in an angle position that can accurately clamp the long straight pipe section of the pipe joint; when the opening of the clamping block is parallel to the long straight pipe section of the pipe joint, the clamping fastener is fastened to the bottom plate through the adjusting bolt, at this time, the clamping fastener can limit the U-shaped mounting seat from rotating relative to the bottom plate, so as to ensure that the second clamping jaw can accurately clamp the long straight pipe section of the pipe joint.

[0019] Therefore, the structure of the present application is simple and reliable, the operation of installing and replacing the pipe joint is also relatively convenient, and the present application has the advantages of good universality, low pipe joint bevel processing cost and the like. BRIEF DESCRIPTION OF DRAWINGS

[0020] FIG. 1 is a structural schematic diagram of the prior art; Figure 1 is a structural schematic diagram of the prior art;

[0021] FIG. 2 is a structural schematic diagram of a preferred embodiment of the present application; Figure 2 is a structural schematic diagram of a preferred embodiment of the present application;

[0022] FIG. 3 is a structural schematic diagram of the first clamping jaw in the preferred embodiment of the present application; Figure 3 FIG. 4 is a structural schematic diagram of the second clamping jaw in the preferred embodiment of the present application;

[0023] Figure 4 FIG. 5 is a structural schematic diagram of the angle adjusting mechanism in the preferred embodiment of the present application.

[0024] FIG. 5 is a structural schematic diagram of the angle adjusting mechanism in the preferred embodiment of the present application. Figure 5 FIG. 5 is a structural schematic diagram of the angle adjusting mechanism in the preferred embodiment of the present application.

[0025] ​Explanation of reference numerals in the attached drawings: 1. Chuck; 2. Through hole; 3. Base plate; 4. Second jaw; 5. First jaw; 5. Upper jaw; 51. Lower jaw; 52. Adjusting stud; 53. Guide post; 54. Angle adjustment mechanism; 6. Pressure plate; 61. Adjusting bolt; 62. Clamping block; 63. Adjusting groove; 64. Bolt; 65. U-shaped mounting base; 7. Clamping component; 8. Clamping block; 81. L-shaped guide rod; 82. Protrusion; 83. Sliding mechanism; 84. Guide groove; 85. Screw mechanism; 9. Drive screw; 91. Threaded rod; 92. Gear; 93. Metal base plate; 10. Pipe joint; 11. Metal plate; 12. Connecting bolt; 13. Detailed Implementation

[0026] The technical solution of the present invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings.

[0027] Example 1: As shown in the attached document Figure 2 Appendix Figure 3 Appendix Figure 4 Appendix Figure 5 As shown, the present invention includes a base plate 3 that can be clamped and fixed by a chuck 1, a first clamping claw 5 that is positioned and installed on the base plate 3 away from the end of the chuck 1 through a through hole 2, and a second clamping claw 4 installed at an oblique position on the first clamping claw 5, an angle adjustment mechanism 6 installed on the base plate 3 and located on the side of the U-shaped mounting base 7, and a pipe connector 11 that can be clamped and fixed to the base plate 3 by the first clamping claw 5 and the second clamping claw 4, wherein the center line of the short straight section of the pipe connector 11 is coaxial with the center line of the chuck 1;

[0028] The base plate 3 is a perforated plate with through holes 2 arranged on its surface;

[0029] The second gripper 4 is used to grip the long straight pipe section of the pipe joint 11, and includes a U-shaped mounting base 7 fixed to the through hole 2 by connecting bolts 13, a gripping component 8 installed in the hollow position of the U-shaped mounting base 7, and screw mechanisms 9 respectively provided at the raised parts at both ends of the U-shaped mounting base 7. The gripping component 8 is controlled by the screw mechanism 9.

[0030] The first jaw 5 is used to clamp the short straight pipe section of the pipe joint 11, and includes an upper jaw 51 and a lower jaw 52 with opposite openings, an adjusting stud 53 threadedly connected to the upper jaw 51 and the lower jaw 52, ​​the lower jaw 52 being fixed to the base plate 3, and the opening and closing of the upper jaw 51 and the lower jaw 52 being controlled by rotating the adjusting stud 53.

[0031] The adjusting stud 53 is provided with guide posts 54 on both sides, which are parallel to the axis of the adjusting stud 53 and are fixedly connected to the upper jaw 51 with screws. The guide posts 54 pass through the lower jaw 52 and the base plate 3 and form a sliding connection with the lower jaw 52.

[0032] The angle adjusting mechanism 6 is arranged on the bottom plate 3 and located at the lateral side of the U-shaped mounting base 7, and comprises a clamping block 63 fixed to the bottom plate 3 through an adjusting bolt 62, a pressing plate 61 provided with an adjusting slot 64, the slot width of the adjusting slot 64 matches the outer diameter of the adjusting bolt 62, the pressing plate 61 is fixedly connected with the bottom plate 3 through a bolt 65 and is connected with the clamping block 63 through the adjusting bolt 62 in the adjusting slot 64, one end of the clamping block 63 is threadedly connected with the adjusting bolt 62, and the other end is abutted against the side wall of the U-shaped mounting base 7, when the adjusting bolt 62 moves along the adjusting slot 64, the clamping block 63 rotates around the adjusting bolt 62 as the shaft, and when the clamping block 63 is fastened to the bottom plate 3 through the pressing plate 61 and the adjusting bolt 62, the rotation of the U-shaped mounting base 7 relative to the bottom plate 3 is limited;

[0033] The clamping component 8 comprises two clamping blocks 81 with opposite openings, and the clamping blocks 81 are slidably connected with the U-shaped mounting base 7 through a sliding mechanism 84;

[0034] The sliding mechanism 84 comprises L-shaped guide rods 82 arranged on the outer walls of the two clamping blocks 81 respectively, guide grooves 85 arranged on the bottoms of the two sides of the U-shaped mounting base 7 respectively, and protruding parts 83 at the lower ends of the L-shaped guide rods 82, which are clamped in the guide grooves 85, the clamping blocks 81 are controlled by the screw rod mechanism 9 to slide along the guide grooves 85 through the L-shaped guide rods 82, and the action of clamping or loosening the long straight pipe section of the pipe joint 11 is completed;

[0035] The screw rod mechanism 9 comprises a driving screw rod 91, two threaded rods 92 and two gears 93, the threaded rods 92 are threadedly connected with the side plates of the U-shaped mounting base 7 and are fixedly connected with the clamping blocks 81 at one end, the two gears 93 are respectively sleeved on the two threaded rods 92, the driving screw rod 91 is threadedly connected with the top plate of the U-shaped mounting base 7 and is meshed with the gear teeth of the gears 93 between the two gears 93, when the driving screw rod 91 rotates, the threaded rods 92 are driven to rotate through the gears 93 and drive the clamping blocks 81 to move along the guide grooves 85 through the threaded rods 92.

[0036] In use, the first clamping jaw 5, the second clamping jaw 4 and the angle adjusting mechanism 6 are first installed on the bottom plate 3;

[0037] The driving screw rod 91 of the second clamping jaw 4 is rotated upward, the gears 93 are driven to rotate in the opposite direction, the threaded rods 92 move outward, and thus the two clamping blocks 81 are loosened;

[0038] The adjusting stud 53 on the first clamping jaw 5 is rotated, so that the upper clamping jaw 51 and the lower clamping jaw 52 are away from each other;

[0039] The short straight pipe section of the pipe joint 11 is placed between the openings of the upper clamping jaw 51 and the lower clamping jaw 52 of the first clamping jaw 5, and the long straight pipe section of the pipe joint 11 is placed between the openings of the two clamping blocks 81 of the first clamping jaw;

[0040] The adjusting screw 53 of the first clamping jaw 5 is used to clamp the short straight pipe section of the pipe joint 11 with the upper clamping jaw 51 and the lower clamping jaw 52, and to adjust the center line of the short straight pipe section of the pipe joint 11 to be parallel to the center line of the chuck 1;

[0041] The fixed angle adjusting mechanism 6 is adjusted so that the clamping block 63 is parallel to the long straight pipe section of the pipe joint 11, the U-shaped mounting seat 7 is adjusted and abuts against the clamping block 63, at this time the opening of the clamping block 81 is also parallel to the long straight pipe section of the pipe joint 11, and the U-shaped mounting seat 7 is fixed to the bottom plate 3 with the bolt 65 and is tightened;

[0042] Finally, the driving screw 91 on both sides is rotated to drive the two clamping blocks 81 to clamp the long straight pipe section of the pipe joint 11, and the pipe joint 11 is stably fixed on the bottom plate 3. After the bottom plate 3 is clamped and fixed on the chuck 1 of the lathe, the pipe joint 11 can be machined.

[0043] Of course, the above-mentioned drawings and embodiments are only used for explaining and illustrating the present application, and cannot be used as improper limitation of the present application. Any technical solution obtained by equivalent adjustment and change according to the present application by those skilled in the art falls within the protection scope of the present application.

Claims

1. A lathe fixture for a waste heat boiler pipe joint, comprising a base plate (3) that can be fixed by means of a chuck (1), characterised in that, The bottom plate (3) is a multi-hole plate with through holes (2) arranged on the plate surface, and further comprises a first clamping jaw (5) positioned through the through hole (2) and mounted on the end of the bottom plate (3) away from the chuck (1), and a second clamping jaw (4) mounted at an oblique position of the first clamping jaw (5), the first clamping jaw (5) is used for clamping a short straight pipe section of a pipe joint (11), the second clamping jaw (4) is used for clamping a long straight pipe section of the pipe joint (11), and the pipe joint (11) can be clamped and fixed to the bottom plate (3) through the first clamping jaw (5) and the second clamping jaw (4).

2. A lathe fixture for a waste heat boiler pipe joint according to claim 1, characterized in that, The second clamping jaw (4) comprises a U-shaped mounting seat (7) fixedly connected with the bottom plate (3) through a connecting bolt (13) at the through hole (2), a clamping component (8) arranged in a hollow position inside the U-shaped mounting seat (7), and a screw rod mechanism (9) separately arranged at the two end raised positions of the U-shaped mounting seat (7), the clamping component (8) is driven by the screw rod mechanism (9) to complete the action of clamping or loosening the long straight pipe section of the pipe joint (11).

3. A lathe fixture for a waste heat boiler pipe joint according to claim 2, characterized in that, The clamping component (8) comprises two clamping blocks (81) with opposite openings, the clamping blocks (81) are slidably connected with the U-shaped mounting seat (7) through a sliding mechanism (84), the sliding mechanism (84) comprises L-shaped guide rods (82) separately arranged on the outer walls of the two sides of the clamping blocks (81), and guide grooves (85) arranged on the outer walls of the two sides of the bottom of the U-shaped mounting seat (7) and parallel to the bottom plate (3), the L-shaped guide rods (82) have protruding portions (83) embedded in the guide grooves (85), and the two clamping blocks (81) can be driven by the screw rod mechanism (9) to move towards each other or away from each other along the guide grooves (85).

4. A lathe fixture for a waste heat boiler pipe joint according to claim 3, characterized in that, The screw rod mechanism (9) comprises a driving screw rod (91) threadedly connected with the top plate of the U-shaped mounting seat (7), two threaded rods (92) with one end fixedly connected with the clamping blocks (81), and gears (93) sleeved on the threaded rods (92), the threaded rods (92) are threadedly connected with the side plates of the U-shaped mounting seat (7), the driving screw rod (91) is engaged with the teeth of the gears (93) between the two gears (93), and when the driving screw rod (91) rotates, the gears (93) drive the threaded rods (92) to rotate, and the clamping blocks (81) are driven by the threaded rods (92) to move along the guide grooves (85).

5. A lathe fixture for a tube joint of a waste heat boiler according to claim 1 or 2 or 3 or 4, characterized in that, The first clamping jaw (5) comprises upper and lower clamping jaws (51, 52) with opposite openings, and an adjusting stud (53) threadedly connected with the upper and lower clamping jaws (51, 52), the lower clamping jaw (52) is fixed to the bottom plate (3), and the spacing between the openings of the upper and lower clamping jaws (51, 52) is adjusted by the adjusting stud (53).

6. A lathe fixture for a waste heat boiler pipe joint according to claim 5, characterized in that The first clamping jaw (5) further comprises guide columns (54) arranged in parallel on the two sides of the adjusting stud (53), the guide columns (54) are fixedly connected with the upper clamping jaw (51) and penetrate through the lower clamping jaw (52) and the bottom plate (3).

7. A lathe fixture for a waste heat boiler pipe joint according to claim 2, characterized in that, An angle adjusting mechanism (6) is arranged on the bottom plate (3) and located at the side of the U-shaped mounting base (7), and is used to limit the rotation of the U-shaped mounting base (7) relative to the bottom plate (3).

8. A lathe fixture for a waste heat boiler pipe joint according to claim 7, characterized in that, The angle adjusting mechanism (6) comprises a clamping block (63) fixed to the bottom plate (3) through an adjusting bolt (62), a pressing plate (61) provided with an adjusting groove (64) with a groove width matching the outer diameter of the adjusting bolt (62), the pressing plate (61) is fixedly connected to the bottom plate (3) through a bolt (65) and connected to the clamping block (63) through the adjusting bolt (62), one end of the clamping block (63) is threadedly connected to the adjusting bolt (62) and the other end is abutted against the side wall of the U-shaped mounting base (7), when the adjusting bolt (62) moves along the adjusting groove (64), the clamping block (63) rotates about the adjusting bolt (62) as the axis, and when the clamping block (63) is fastened to the bottom plate (3) through the pressing plate (61) and the adjusting bolt (62), the rotation of the U-shaped mounting base (7) relative to the bottom plate (3) is limited.

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