A positioning and clamping device for pipe socket milling

Abstract

This invention discloses a positioning and clamping device for milling a pipe end, specifically relating to the field of pipe machining technology. The device includes a positioning plate, a positioning disc, and a pipe. The surfaces of the fixing frame and connecting frame are provided with clamping mechanisms for holding the pipe. The surfaces of the clamping mechanisms are provided with connecting mechanisms for limiting the position of the end. The interior of the fixing frame is provided with a fixing mechanism for fixing the positioning disc. By providing detachable first clamping blocks, second clamping blocks, and the positioning disc, operators can replace clamping blocks with corresponding arc-shaped grooves according to the pipe's outer diameter, and simultaneously replace positioning discs with corresponding end grooves according to the shape and size of the end, without needing to replace the entire set of fixtures or make complex adjustments. This greatly expands the device's applicability, solves the problems of poor versatility and inconvenient replacement and adjustment of traditional fixtures, and significantly improves production efficiency.

Description

Technical Field

[0001] This invention relates to the field of pipe machining technology, and more specifically, to a positioning and clamping device for milling the milling plane of a pipe end. Background Technology

[0002] In the field of pipeline processing, milling the end faces (i.e., beveling or socket) of pipelines is a common procedure. When pipelines transport gases, liquids, or fluids containing solid particles, the sealing performance and structural strength of their connections are crucial. The quality of the milled end faces directly affects the weld quality of the pipe butt welds and the sealing performance of flange connections—angular deviations or uneven surfaces in the milled plane will lead to uneven weld gaps and inadequate sealing, potentially causing leaks and other safety hazards. Therefore, precise and stable positioning and clamping of the pipeline during the milling process is a prerequisite for ensuring processing quality.

[0003] However, existing clamping devices are mostly simple vises or V-block structures. While they can achieve basic clamping functions, they lack precise angular limiting capabilities for pipe fittings with specific opening structures. Furthermore, when processing pipe fittings of different diameters or opening sizes, traditional clamps have poor versatility, involve cumbersome parts replacement, and have separate clamping and positioning / locking actions, resulting in low operating efficiency and insufficient clamping stability.

[0004] Therefore, a positioning and clamping device for milling the surface of a pipe joint is proposed to address the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a positioning and clamping device for milling the surface of a pipe joint.

[0006] The positioning and clamping device for milling the surface of a pipe end provided by this invention adopts the following technical solution: A positioning and clamping device for milling a pipe end includes a positioning plate, a positioning disc, and a pipe. A fixing plate and a fixing frame are fixedly connected to the surface of the positioning plate. Multiple sets of guide rods are fixedly connected between the fixing plate and the fixing frame. A connecting frame is slidably connected to the surface of the guide rods. An electric push rod is fixedly connected to one side of the fixing plate. A connecting frame is fixedly connected to one end of the electric push rod. The surface of the pipe has an end. The surfaces of the fixing frame and the connecting frame are provided with clamping mechanisms for clamping the pipe. The surface of the clamping mechanism is provided with a connecting mechanism for limiting the end. A fixing mechanism for fixing the positioning disc is provided inside the fixing frame.

[0007] Preferably, the surface of the positioning plate has multiple sets of positioning holes, and the surface of the positioning plate is provided with a control rod, which is electrically connected to the electric push rod.

[0008] Preferably, the clamping mechanism includes a first connecting groove, a second connecting groove, a fixing groove, a first clamping block, a second clamping block, an arc-shaped groove, a fixing block, bolt holes, and bolts. The surface of the fixing frame is provided with a first connecting groove, and the surface of the connecting frame is provided with a second connecting groove. A fixing groove is provided at one end of the inner wall of the first connecting groove and the second connecting groove. The inner wall of the first connecting groove is slidably connected to the first clamping block, and the inner wall of the second connecting groove is slidably connected to the second clamping block.

[0009] Preferably, an arc-shaped groove is provided on one side of both the first clamping block and the second clamping block, and a fixing block is fixedly connected to one end of both the first clamping block and the second clamping block, and the inner wall of the fixing groove cooperates with the fixing block.

[0010] Preferably, the surface of the fixing block is provided with bolt holes, the inner wall of the bolt holes is threaded with bolts, and one end of the bolts cooperates with the fixing frame and the connecting frame.

[0011] Preferably, the connecting mechanism includes a first groove, a locking pin groove, a positioning plate, a pull-out groove, a spring groove, a spring, and a locking pin. The surface of the first clamping block is provided with a first groove, one end of the inner wall of the first groove is provided with a locking pin groove, and the positioning plate is slidably connected to the inner wall of the first groove.

[0012] Preferably, the surface of the positioning disk is provided with a pull-out groove, one side of the positioning disk is provided with a spring groove, the inner wall of the spring groove is provided with a spring, one end of the spring is fixedly connected with a locking pin, and the inner wall of the locking pin groove cooperates with the outer wall of the locking pin.

[0013] Preferably, the fixing mechanism includes a second groove, a first rack, a sliding groove, a limiting groove, a gear, a limiting block, a locking block, a second rack, and a locking groove. The surface of the first clamping block is provided with a second groove, the inner wall of the second groove is fixedly connected to the first rack, and a sliding groove is provided on one side of the inner wall of the first connecting groove.

[0014] Preferably, the inner wall of the slide is provided with a limiting groove, the inner wall of the slide is rotatably connected with a gear, the inner wall of the limiting groove is slidably connected with a limiting block, the top of the limiting block is fixedly connected with a locking block, and the bottom of the limiting block is fixedly connected with a second rack.

[0015] Preferably, the inner wall of the slide groove cooperates with the locking block, the gear meshes with the first rack and the second rack, and a locking groove is provided on one side of the positioning disk, the inner wall of the locking groove cooperating with the outer wall of the locking block.

[0016] The technical effects and advantages of this invention are as follows: Compared with existing technologies, this positioning and clamping device for milling the milled surface of a pipe end achieves precise positioning of the angular position of the pipe end by setting the pipe end groove in the connecting mechanism to cooperate with the pipe end. This effectively prevents the pipe from deflecting in the circumferential direction, overcomes the shortcomings of traditional clamps that lack angular positioning function and rely solely on visual adjustment, resulting in poor positioning accuracy, and ensures the angular accuracy of the milled surface.

[0017] Compared with existing technologies, this positioning and clamping device for milling the surface of pipe ends features detachable first and second clamping blocks and a positioning plate. This allows operators to replace the clamping blocks with corresponding arc-shaped grooves according to the pipe's outer diameter, and to replace the positioning plate with corresponding cutting grooves according to the shape and size of the cutting end. This eliminates the need to replace the entire fixture set or perform complex adjustments, greatly expanding the device's applicability and solving the problems of poor versatility and inconvenient replacement and adjustment of traditional fixtures, thus significantly improving production efficiency. Furthermore, by electrically connecting an electric push rod to a control rod, automated control of clamping and releasing is achieved, replacing traditional manual operation, reducing operator workload, ensuring consistent clamping force and stable processing quality, and meeting the needs of batch processing. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the pipe and the pull-out joint structure of the present invention; Figure 3 This is a schematic diagram of the connection frame and the second clamping block of the present invention. Figure 4 This is a schematic diagram of the clamping mechanism of the present invention; Figure 5 This is a schematic diagram of the first groove and the locking pin groove of the present invention. Figure 6 This is a schematic diagram of the fixing mechanism of the present invention; Figure 7 For the present invention Figure 5 An enlarged diagram of A in the diagram.

[0019] The attached figures are labeled as follows: 1. Positioning plate; 2. Fixing plate; 3. Fixing frame; 4. Guide rod; 5. Connecting frame; 6. Electric push rod; 7. Clamping mechanism; 701. First connecting groove; 702. Second connecting groove; 703. Fixing groove; 704. First clamping block; 705. Second clamping block; 706. Arc-shaped groove; 707. Fixing block; 708. Bolt hole; 709. Bolt; 8. Connecting mechanism; 801. First groove; 802. 803. Locking pin groove; 804. Positioning plate; 805. Pulling slot; 806. Spring groove; 807. Spring; 808. Locking pin; 9. Fixing mechanism; 901. Second groove; 902. First rack; 903. Slide groove; 904. Limiting groove; 905. Gear; 906. Limiting block; 907. Locking block; 908. Second rack; 909. Locking groove; 10. Pipe; 11. Pulling slot; 12. Positioning hole; 13. Control rod. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Example like Figures 1 to 7 The positioning and clamping device for milling a pipe end, as shown, includes a positioning plate 1, a positioning disc 803, and a pipe 10. A fixing plate 2 and a fixing frame 3 are fixedly connected to the surface of the positioning plate 1. Multiple sets of guide rods 4 are fixedly connected between the fixing plate 2 and the fixing frame 3. A connecting frame 5 is slidably connected to the surface of the guide rod 4, allowing the connecting frame 5 to slide back and forth along the axial direction of the guide rod 4. An electric push rod 6 is fixedly connected to one side of the fixing plate 2, and the connecting frame 5 is fixedly connected to one end of the electric push rod 6. The electric push rod 6 is used to drive the connecting frame 5 to slide along the guide rod 4 to achieve clamping and releasing actions. The surface of the pipe 10 is provided with an end 11. The surfaces of the fixing frame 3 and the connecting frame 5 are provided with a clamping mechanism 7 for clamping the pipe 10. The surface of the clamping mechanism 7 is provided with a connecting mechanism 8 for limiting the end 11. The interior of the fixing frame 3 is provided with a fixing mechanism 9 for fixing the positioning disc 803.

[0022] In a preferred embodiment, the surface of the positioning plate 1 is provided with multiple sets of positioning holes 12. The positioning holes 12 are through holes and are evenly distributed around the perimeter of the positioning plate 1 for mounting bolts to pass through, thereby fixing the entire device on the milling machine's worktable and ensuring that the device as a whole will not shift during processing. The surface of the positioning plate 1 is provided with a control rod 13, which is electrically connected to the electric push rod 6. The control rod 13 is provided with a start button, a stop button, and a telescopic direction switching switch. By operating the control rod 13, the operator can easily control the start and stop of the electric push rod 6 and the extension and retraction of the telescopic rod, thereby achieving automated control of clamping and releasing.

[0023] In a preferred embodiment, the clamping mechanism 7 includes a first connecting groove 701, a second connecting groove 702, a fixing groove 703, a first clamping block 704, a second clamping block 705, an arc-shaped groove 706, a fixing block 707, a bolt hole 708, and a bolt 709. The surface of the fixing frame 3 is provided with the first connecting groove 701, and the surface of the connecting frame 5 is provided with the second connecting groove 702. The fixing groove 703 is provided at one end of the inner wall of the first connecting groove 701 and the second connecting groove 702. The first clamping block 704 is slidably connected to the inner wall of the first connecting groove 701, and the second clamping block 705 is slidably connected to the inner wall of the second connecting groove 702. The first clamping block 704 and the second clamping block 705 can be inserted into or pulled out from the opening ends of the first connecting groove 701 and the second connecting groove 702, respectively, so as to realize detachable installation.

[0024] In a preferred embodiment, an arc-shaped groove 706 is provided on one side of both the first clamping block 704 and the second clamping block 705. The curvature of the inner wall of the arc-shaped groove 706 is adapted to the curvature of the outer wall of the pipe 10 to be processed. When the first clamping block 704 and the second clamping block 705 are brought close together, the two arc-shaped grooves 706 together form a circular clamping space that matches the outer diameter of the pipe 10, thereby achieving close clamping of the outer wall of the pipe 10, increasing the contact area, and preventing the pipe 10 from rolling or radially jumping during processing. A fixing block 707 is fixedly connected to one end of both the first clamping block 704 and the second clamping block 705. The inner wall of the fixing groove 703 cooperates with the fixing block 707, so that the fixing block 707 can be embedded in the fixing groove 703.

[0025] In a preferred embodiment, the surface of the fixing block 707 is provided with bolt holes 708, and bolts 709 are threaded onto the inner wall of the bolt holes 708. One end of the bolt 709 mates with the fixing frame 3 and the connecting frame 5. When the first clamping block 704 is inserted into the first connecting groove 701 and the fixing block 707 is in place, the bolt 709 is screwed into the bolt hole 708, so that the end of the bolt 709 abuts against the upper surface of the fixing frame 3, thereby locking the first clamping block 704 in the first connecting groove 701. Similarly, the second clamping block 705 is locked in the second connecting groove 702 by bolts 709. This structure allows the clamping blocks to be quickly disassembled and replaced according to the outer diameter of the pipe 10, enhancing the versatility of the device.

[0026] In a preferred embodiment, the connecting mechanism 8 includes a first groove 801, a locking pin groove 802, a positioning plate 803, a pull-out groove 804, a spring groove 805, a spring 806, and a locking pin 807. The surface of the first clamping block 704 is provided with the first groove 801, and one end of the inner wall of the first groove 801 is provided with the locking pin groove 802. The positioning plate 803 is slidably connected to the inner wall of the first groove 801, so that the positioning plate 803 can be embedded in the first groove 801.

[0027] In a preferred embodiment, the surface of the positioning disc 803 is provided with a pull-out groove 804, the shape and size of which are adapted to the pull-out 11 at the end of the pipe 10. A spring groove 805 is provided on one side of the positioning disc 803, and a spring 806 is provided on the inner wall of the spring groove 805. One end of the spring 806 is fixedly connected to a locking pin 807. The inner wall of the locking pin groove 802 cooperates with the outer wall of the locking pin 807. During installation, the first clamping block 704 is partially inserted into the first connecting groove 701, and then the positioning disc 803 is pushed into the first groove 801. The inner wall of the first groove 801 will squeeze the locking pin 807 and the spring 806. When the positioning disc 803 is in the correct position, the spring 806 returns to its original position and pushes the locking pin 807 into the locking pin groove 802, so that the positioning disc 803 can be locked in the first clamping block 704, thereby realizing the quick installation and removal of the positioning disc 803.

[0028] In a preferred embodiment, the fixing mechanism 9 includes a second groove 901, a first rack 902, a sliding groove 903, a limiting groove 904, a gear 905, a limiting block 906, a locking block 907, a second rack 908, and a locking groove 909. The surface of the first clamping block 704 is provided with the second groove 901, and the inner wall of the second groove 901 is fixedly connected to the first rack 902. A sliding groove 903 is provided on one side of the inner wall of the first connecting groove 701.

[0029] In a preferred embodiment, the inner wall of the slide groove 903 is provided with a limiting groove 904, and the shape of the limiting block 906 is adapted to the limiting groove 904, so that the limiting block 906 can only slide along the extension direction of the limiting groove 904, and cannot rotate or deviate. The inner wall of the slide groove 903 is rotatably connected to a gear 905, and the inner wall of the limiting groove 904 is slidably connected to the limiting block 906. The top of the limiting block 906 is fixedly connected to a locking block 907, and the bottom is fixedly connected to a second rack 908.

[0030] In a preferred embodiment, the inner wall of the slide groove 903 engages with the locking block 907, and the gear 905 meshes with the first rack 902 and the second rack 908. A slot 909 is provided on one side of the positioning disk 803, and the inner wall of the slot 909 engages with the outer wall of the locking block 907. After the positioning disk 803 is installed, as the first clamping block 704 slides continuously into the first connecting groove 701, the first rack 902 drives the gear 905 to rotate, and the gear 905 in turn drives the second rack 908 to move in the opposite direction, so that the first rack 902 drives the second rack 908 to move forward through the gear 905. The second rack 908 drives the limiting block 906 and the locking block 907 to extend forward simultaneously, so that one end of the locking block 907 passes through the slide groove 903 and inserts into the slot 909 on the positioning disk 803, thereby pressing and fixing the positioning disk 803 onto the first clamping block 704, realizing the linkage locking function.

[0031] The working process of this invention is as follows: Before processing, the operator first selects a first clamping block 704 and a second clamping block 705 with corresponding arc-shaped grooves 706 according to the outer diameter of the pipe 10 to be processed; at the same time, according to the shape and size of the end port 11 of the pipe 10, a positioning plate 803 with corresponding port grooves 804 is selected. The first clamping block 704 is partially inserted into the first connecting groove 701, and then the positioning plate 803 is pushed into the first groove 801. The inner wall of the first groove 801 will squeeze the locking pin 807 and the spring 806. When the positioning plate 803 is in the correct position, the spring 806 resets and pushes the locking pin 807 into the locking pin groove 802, so that the positioning plate 803 is locked in the first clamping block 704. Then, as the first clamping block 704 slides into the first connecting groove 701... When the first rack 902 rotates, it drives the gear 905 to rotate. The gear 905 then drives the second rack 908 to move in the opposite direction, so that the first rack 902 drives the second rack 908 to move forward through the gear 905. The second rack 908 drives the limiting block 906 and the locking block 907 to extend forward simultaneously, so that one end of the locking block 907 passes through the sliding groove 903 and inserts into the locking groove 909 on the positioning plate 803, thereby pressing and fixing the positioning plate 803 onto the first clamping block 704, realizing the linkage locking function. When the first clamping block 704 is inserted into the first connecting groove 701 and the fixing block 707 is in place, the bolt 709 is screwed into the bolt hole 708, so that the end of the bolt 709 abuts against the upper surface of the fixing frame 3, thereby locking the first clamping block 704 into the first connecting groove 701. Similarly, the second clamping block 705 is locked in the second connecting groove 702 by bolts 709. The operator aligns the pull end 11 of the pipe 10 with the pull groove 804 on the surface of the positioning plate 803 and pushes the pipe 10 axially so that the pull end 11 passes through the pull groove 804. At this time, the pull end 11 cooperates with the groove wall of the pull groove 804, and the angular position of the pipe 10 is precisely defined, effectively preventing the pipe 10 from deflecting in the circumferential direction. The operator starts the electric push rod 6 by operating the start button on the control rod 13. The telescopic end of the electric push rod 6 retracts, pulling the connecting frame 5 to slide along the guide rod 4 towards the fixed plate 2.The connecting frame 5 drives the second clamping block 705 in the second connecting groove 702 to move synchronously towards the fixed frame 3, so that the second clamping block 705 gradually approaches the first clamping block 704. As the first clamping block 704 and the second clamping block 705 approach each other, the two arc-shaped grooves 706 together form a circular clamping space that matches the outer diameter of the pipe 10. The inner wall of the arc-shaped groove 706 is tightly attached to the outer wall of the pipe 10, realizing radial clamping of the pipe 10 and preventing the pipe 10 from rolling or radially jumping during processing. This ensures that the pipe 10 is completely positioned and locked in the radial, axial and angular dimensions, achieving a stable and reliable processing state. After processing is completed, the operator controls the electric... The telescopic end of the push rod 6 extends, pushing the connecting frame 5 to slide away from the fixed plate 2 along the guide rod 4. The first clamping block 704 and the second clamping block 705 separate from each other, releasing the pipe 10 and allowing the processed pipe 10 to be removed. When different specifications of pipes need to be processed, simply loosen the bolt 709, pull out the first clamping block 704 and the second clamping block 705 from the first connecting groove 701 and the second connecting groove 702 respectively, replace the clamping block with the corresponding arc groove 706, and replace the positioning plate 803 with the corresponding drawing groove 804. There is no need to make complex adjustments to the entire device, achieving rapid changeover. The above is the working principle of this positioning and clamping device for milling the milled surface of a pipe.

Claims

1. A positioning and clamping device for milling a pipe end, comprising a positioning plate (1), a positioning disk (803), and a pipe (10), characterized in that: The surface of the positioning plate (1) is fixedly connected to a fixing plate (2) and a fixing frame (3). Multiple sets of guide rods (4) are fixedly connected between the fixing plate (2) and the fixing frame (3). A connecting frame (5) is slidably connected to the surface of the guide rod (4). An electric push rod (6) is fixedly connected to one side of the fixing plate (2). A connecting frame (5) is fixedly connected to one end of the electric push rod (6). The surface of the pipe (10) is provided with a pull-out port (11). The surfaces of the fixing frame (3) and the connecting frame (5) are provided with a clamping mechanism (7) for clamping the pipe (10). The surface of the clamping mechanism (7) is provided with a connecting mechanism (8) for limiting the pull-out port (11). The interior of the fixing frame (3) is provided with a fixing mechanism (9) for fixing the positioning plate (803).

2. The positioning and clamping device for milling a pipe end according to claim 1, characterized in that: The positioning plate (1) has multiple sets of positioning holes (12) on its surface, and a control rod (13) is provided on its surface. The control rod (13) is electrically connected to the electric push rod (6).

3. The positioning and clamping device for milling a pipe end according to claim 1, characterized in that: The clamping mechanism (7) includes a first connecting groove (701), a second connecting groove (702), a fixing groove (703), a first clamping block (704), a second clamping block (705), an arc groove (706), a fixing block (707), a bolt hole (708), and a bolt (709). The surface of the fixing frame (3) is provided with the first connecting groove (701), and the surface of the connecting frame (5) is provided with the second connecting groove (702). The inner wall of the first connecting groove (701) and the second connecting groove (702) is provided with a fixing groove (703) at one end. The inner wall of the first connecting groove (701) is slidably connected to the first clamping block (704), and the inner wall of the second connecting groove (702) is slidably connected to the second clamping block (705).

4. The positioning and clamping device for milling a pipe end according to claim 3, characterized in that: An arc-shaped groove (706) is provided on one side of the first clamping block (704) and the second clamping block (705). A fixing block (707) is fixedly connected to one end of the first clamping block (704) and the second clamping block (705). The inner wall of the fixing groove (703) cooperates with the fixing block (707).

5. The positioning and clamping device for milling a pipe end according to claim 4, characterized in that: The surface of the fixing block (707) is provided with bolt holes (708), and the inner wall of the bolt holes (708) is threaded with bolts (709). One end of the bolts (709) is engaged with the fixing frame (3) and the connecting frame (5).

6. The positioning and clamping device for milling a pipe end according to claim 3, characterized in that: The connecting mechanism (8) includes a first groove (801), a locking groove (802), a positioning plate (803), a pull groove (804), a spring groove (805), a spring (806), and a locking pin (807). The surface of the first clamping block (704) is provided with a first groove (801), and one end of the inner wall of the first groove (801) is provided with a locking groove (802). The positioning plate (803) is slidably connected to the inner wall of the first groove (801).

7. The positioning and clamping device for milling a pipe end according to claim 6, characterized in that: The positioning disk (803) has a pull slot (804) on its surface and a spring slot (805) on one side. A spring (806) is provided on the inner wall of the spring slot (805). A locking pin (807) is fixedly connected to one end of the spring (806). The inner wall of the locking pin groove (802) cooperates with the outer wall of the locking pin (807).

8. The positioning and clamping device for milling a pipe end according to claim 3, characterized in that: The fixing mechanism (9) includes a second groove (901), a first rack (902), a slide groove (903), a limiting groove (904), a gear (905), a limiting block (906), a locking block (907), a second rack (908), and a locking groove (909). The surface of the first clamping block (704) is provided with a second groove (901). The inner wall of the second groove (901) is fixedly connected to the first rack (902). A slide groove (903) is provided on one side of the inner wall of the first connecting groove (701).

9. A positioning and clamping device for milling a pipe end according to claim 8, characterized in that: The inner wall of the slide (903) is provided with a limiting groove (904), and a gear (905) is rotatably connected to the inner wall of the slide (903). A limiting block (906) is slidably connected to the inner wall of the limiting groove (904). A locking block (907) is fixedly connected to the top of the limiting block (906), and a second rack (908) is fixedly connected to the bottom.

10. A positioning and clamping device for milling a pipe end according to claim 9, characterized in that: The inner wall of the slide (903) engages with the locking block (907), the gear (905) meshes with the first rack (902) and the second rack (908), and a locking groove (909) is provided on one side of the positioning disk (803), the inner wall of the locking groove (909) engages with the outer wall of the locking block (907).

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