A small-size inner diameter grinding apparatus for seamless pipes

Abstract

The utility model relates to the technical field of polishing device, especially small -size seamless pipe inner repair grinding equipment. It includes installation table body, one pair of installation groove is opened to the top symmetry of installation table body, every installation groove all is provided with transmission assembly, every transmission assembly all is provided with repair grinding auxiliary assembly, and the polishing plate of removable is provided between two repair grinding auxiliary assemblies. The utility model discloses adjustable fixed block through repair grinding auxiliary assembly, and the small diameter seamless steel pipe of different inner diameter is faced, and only needs to carry out fine adjustment to fixed block position through nut and screw rod, makes it and different pipe diameter steel pipe adaptation, and the polishing plate both ends are inserted into the slot fixed, and then realize the polishing of the inner wall of various pipe diameter steel pipe, greatly promote the versatility of equipment processing, satisfy the diversified production demand.

Description

Technical Field

[0001] This utility model relates to the field of grinding device technology, and in particular to a small-sized seamless pipe internal grinding device. Background Technology

[0002] In modern industrial manufacturing, small-diameter seamless steel pipes are widely used in aerospace, precision instrument manufacturing, electronic equipment, and many other industries with extremely high requirements for component precision and quality due to their excellent performance. For example, in aero engines, small-diameter seamless steel pipes are used to transport fuel and lubricating oil, and the quality of their inner walls directly affects the engine's performance and reliability. In high-end medical devices, small-diameter seamless steel pipes, as key structural components, must have smooth inner surfaces to ensure the safe and stable operation of the equipment.

[0003] However, grinding small-diameter seamless steel pipes has always been a major challenge in the industry. The narrow diameter and limited internal space of these pipes make them difficult to grind effectively using traditional large-scale grinding equipment. Manual grinding is extremely inefficient; a skilled worker can only grind a small number of pipes per day, failing to meet the demands of large-scale industrial production. Furthermore, the quality of manual grinding relies entirely on the worker's experience and feel, resulting in inconsistent grinding precision, a high scrap rate, and a significant increase in production costs.

[0004] Existing small-scale grinding equipment also has many shortcomings when dealing with small-diameter seamless steel pipes. For small-diameter seamless steel pipes of different diameters, existing equipment lacks sufficient adaptability and cannot meet diverse grinding needs through simple adjustments. Utility Model Content

[0005] The purpose of this invention is to provide a small-sized seamless tube internal grinding device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution, which includes a mounting table, a pair of mounting slots symmetrically opened on the top of the mounting table, a transmission component in each mounting slot, a grinding auxiliary component on each transmission component, and a detachable grinding plate between the two sets of grinding auxiliary components.

[0007] As a preferred embodiment of this utility model, the mounting table is provided with a pair of sliding sleeves, and a pair of telescopic cylinders are symmetrically arranged at the bottom of the mounting table. The telescopic rod of the first telescopic cylinder passes through the mounting table and is movably disposed within the sliding sleeve. A first mounting plate is provided at the top of the telescopic rod of the first telescopic cylinder, and a support pad is provided at the top of the first mounting plate. A mounting frame is provided in the middle of the mounting table, and a second telescopic cylinder is provided at the top of the mounting frame. The telescopic rod of the second telescopic cylinder passes through the mounting frame and is placed inside the mounting frame. A second mounting plate is provided at the top of the telescopic rod of the second telescopic cylinder, and a pressure pad is provided at the bottom of the second mounting plate.

[0008] As a preferred embodiment of this utility model, the transmission assembly includes a first motor disposed on the side of the mounting table body, a lead screw disposed on the transmission end of the first motor, the lead screw being movably disposed in the mounting groove, a driving component disposed on the lead screw, a nut disposed inside the driving component, the nut being threaded on the lead screw, a third mounting plate disposed on the top of the driving component, and the grinding auxiliary assembly disposed on the third mounting plate.

[0009] As a preferred embodiment of this utility model, a pair of sliding grooves are provided on both sides of each mounting groove, and sliders are symmetrically arranged on both sides of the bottom of the third mounting plate, with the sliders disposed in the sliding grooves.

[0010] As a preferred embodiment of this utility model, the grinding auxiliary component includes a turntable, a rotating rod on the back of the turntable, the rotating rod being movably mounted on a third mounting plate via a bearing seat, a bidirectional lead screw inside the turntable, both ends of the bidirectional lead screw having internal hexagonal grooves, a pair of positioning plates symmetrically arranged on the bidirectional lead screw, a pair of sliding grooves on the front of the turntable, a moving groove between the two sliding grooves, a fixing block on the front of the turntable, a pair of sliding blocks on the back of the fixing block, the sliding blocks being disposed within the sliding grooves, a screw between the two sliding blocks, the screw being disposed within the moving groove and fixed to the turntable by a nut, a slot on the front of the fixing block, and both ends of the grinding plate being inserted into the slots of the two fixing blocks and fixed by bolts.

[0011] As a preferred embodiment of this utility model, a mounting bracket is provided on the back of one of the third mounting plates, and a second motor is provided on the mounting bracket. The transmission end of the second motor is connected to the tail end of one of the rotating rods through a coupling.

[0012] Compared with the prior art, the above-mentioned technical solution of this utility model has the following beneficial technical effects:

[0013] 1. This utility model has an adjustable fixing block in the grinding auxiliary component. When dealing with small-diameter seamless steel pipes with different inner diameters, the position of the fixing block can be finely adjusted by using nuts and screws to adapt it to steel pipes of different diameters. The grinding plate is fixed by inserting slots at both ends, thereby realizing the grinding of the inner wall of steel pipes of various diameters, which greatly improves the versatility of the equipment and meets diversified production needs.

[0014] 2. This utility model uses a telescopic cylinder to lift the steel pipe, and a transmission component to drive the positioning plate to move. At the same time, the positioning plate is adjusted by a two-way screw to accurately support the steel pipe, keeping the center of the steel pipe concentric with the center of the turntable. Combined with the telescopic cylinder driving the pressure pad to press the steel pipe, the steel pipe is stabilized from multiple angles, ensuring the stability of the steel pipe throughout the grinding process, effectively guaranteeing the grinding accuracy and meeting the requirements of high-precision processing. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the installation table structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the transmission component structure of this utility model;

[0018] Figure 4 This is a front structural diagram of the grinding auxiliary component of this utility model;

[0019] Figure 5 This is a schematic diagram of the back structure of the grinding auxiliary component of this utility model;

[0020] Figure 6 This is a schematic diagram of the bidirectional lead screw structure of this utility model;

[0021] Figure 7 This is a schematic diagram of the fixing block structure of this utility model;

[0022] Figure 8 This is a schematic diagram of the structure of the two sets of grinding auxiliary components of this utility model when the grinding plate is assembled.

[0023] Reference numerals in the attached drawings: 1. Mounting table body; 10. Mounting groove; 11. Slide groove one; 12. Telescopic cylinder one; 13. Mounting frame; 14. First mounting plate; 15. Support pad; 16. Second mounting plate; 17. Pressure pad; 18. Sliding sleeve; 19. Telescopic cylinder two; 2. Transmission assembly; 20. First motor; 21. Lead screw; 22. Drive component; 23. Nut; 24. Third mounting plate; 25. Slider one; 36. Grinding auxiliary assembly; 30. Turntable; 31. Rotating rod; 32. Bearing seat; 33. Bidirectional lead screw; 34. Inner hexagonal groove; 35. Positioning plate; 36. Moving groove; 37. Slide groove two; 38. Fixing block; 39. Slot; 310. Screw; 311. Nut; 312. Bolt group; 313. Grinding plate; 4. Mounting bracket; 5. Second motor; 50. Coupling; 51. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this utility model. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of this utility model.

[0025] like Figures 1-8 As shown, this utility model proposes a small-sized seamless pipe internal grinding device, which includes an installation table 1, which serves as the basic support structure of the entire device. A pair of mounting slots 10 are symmetrically opened on the top of the table for mounting the transmission component 2. A pair of sliding sleeves 18 are also provided on the top, and a pair of telescopic cylinders 12 are symmetrically installed on the bottom. The telescopic rods of the telescopic cylinders 12 pass through the installation table 1 and are movably installed in the sliding sleeves 18. This design ensures the stability of the telescopic rod movement and provides effective guidance. A first mounting plate 14 is connected to the top of the telescopic rod, and a support pad 15 is installed on the top of the first mounting plate 14 for placing the seamless steel pipe to be ground. An installation frame 13 is provided in the middle of the installation table 1. A second telescopic cylinder 19 is installed on the top of the installation frame 13. The telescopic rod of the second telescopic cylinder 19 passes through the installation frame 13 and is placed inside the frame. A second mounting plate 16 is connected to the top of the telescopic rod, and a pressure pad 17 is installed on the bottom of the second mounting plate 16 for pressing the seamless steel pipe during the grinding process to prevent it from moving.

[0026] The transmission component 2 is installed in the mounting slot 10 and includes a first motor 20 located on the side of the mounting table 1. The transmission end of the first motor 20 is connected to a lead screw 21, which can move within the mounting slot 10. A drive component 22 is mounted on the lead screw 21, and a nut 23 is provided inside the drive component 22. The nut 23 and the lead screw 21 are connected by a thread. This threaded connection can convert the rotational motion of the motor into the linear motion of the drive component 22. The top of the drive component 22 is connected to a third mounting plate 24. The grinding auxiliary component 3 is installed on the third mounting plate 24. In addition, a pair of sliding grooves 11 are provided on both sides of each mounting slot 10. Slider blocks 25 are symmetrically arranged on both sides of the bottom of the third mounting plate 24. The sliders 25 are embedded in the sliding grooves 11, making the third mounting plate 24 more stable during movement and ensuring the precise movement of the grinding auxiliary component 3.

[0027] The grinding auxiliary component 3 is mounted on the third mounting plate 24 and mainly includes a turntable 30. A rotating rod 31 is connected to the back of the turntable 30. The rotating rod 31 is movably mounted on the third mounting plate 24 via a bearing seat 32, allowing the turntable 30 to rotate freely. The turntable 30 has a double-acting screw 33 inside. Both ends of the double-acting screw 33 have internal hexagonal grooves 34 for easy operation with tools such as hex wrenches. A pair of positioning plates 35 are symmetrically mounted on the double-acting screw 33 for positioning the seamless steel pipe during grinding. A pair of sliding grooves 37 are provided on the front of the turntable 30, and a groove is located between the two sliding grooves 37. The movable groove 36 and the front of the turntable 30 are also provided with a fixed block 38. The back of the fixed block 38 is provided with a pair of sliders 310. The sliders 310 are installed in the sliding groove 37. The two sliders 310 are connected by a screw 311. The screw 311 is located in the movable groove 36 and is fixed to the turntable 30 by a nut 312. In this way, the position of the fixed block 38 can be changed by adjusting the nut 312. The front of the fixed block 38 is provided with a slot 39. The two ends of the detachable grinding plate 4 are inserted into the slots 39 of the two fixed blocks 38 respectively and fixed with bolts 313 to ensure that the grinding plate 4 is installed firmly.

[0028] A mounting bracket 5 is provided on the back of one of the third mounting plates 24. A second motor 50 is mounted on the mounting bracket 5. The transmission end of the second motor 50 is connected to the tail end of one of the rotating rods 31 through a coupling 51. With this connection, when the second motor 50 is running, it can drive the rotating rod 31 and the turntable 30 to rotate, thereby driving the grinding plate 4 mounted on the turntable 30 to grind the inner wall of the seamless steel pipe. When the second motor 50 is started, the power output by the motor is transmitted to the rotating rod 31 through the coupling 51. The rotating rod 31 drives the turntable 30 to rotate at high speed, realizing the efficient grinding operation of the inner wall of the seamless steel pipe.

[0029] The first step in operating the equipment is to place the seamless steel pipe to be ground. The seamless steel pipe is placed stably on the two support pads 15 to provide basic support for subsequent operations. After it is properly placed, the operator activates the two telescopic cylinders 12 through the controller. The telescopic cylinders 12 lift the steel pipe upward. The lifting height should be such that the center of the seamless steel pipe is slightly lower than the center of the turntable 30. This height difference is set to prepare for the subsequent positioning operation, so as to more accurately achieve the positioning and fixing of the steel pipe.

[0030] Subsequently, the controller starts the first motor 20 of the two transmission components 2. The operation of the first motor 20 drives the lead screw 21 to rotate synchronously. Utilizing the cooperation mechanism between the lead screw 21 and the lead screw 23, the rotational motion is converted into linear motion, thereby driving the two drive components 22 to move inward. This movement continues until the positioning plates 35 on both sides are precisely positioned inside the ends of the seamless steel pipe. At this point, a hex wrench is used to turn the double-acting lead screw 33. The rotation of the double-acting lead screw 33 will drive the two positioning plates 35 to move outward synchronously until the positioning plates 35 fully support the seamless steel pipe and ensure positioning. Plate 35 is completely fitted to the inner wall of the seamless steel pipe. This fit directly affects the stability of the steel pipe during the grinding process. After the positioning plates 35 on both turntables 30 have completed the above adjustments, the four positioning plates 35 support the seamless steel pipe so that the center of the seamless steel pipe is aligned with the center of the turntable 30. At this time, the two telescopic cylinders 12 are activated again to continue moving upward and steadily support the seamless steel pipe. At the same time, the telescopic cylinder 19 is activated, and the telescopic cylinder 19 pushes the pressure pad 17 downward until the pressure pad 17 presses the seamless steel pipe. Through the dual action, the seamless steel pipe is accurately positioned.

[0031] After the seamless steel pipe is positioned, the positioning plate 35 and the repair auxiliary components are reset to prepare for the installation of the grinding plate 4. The grinding plate 4 is placed inside the seamless steel pipe, and then the two grinding auxiliary components 3 are adjusted. The positions of the fixing blocks 38 on the two grinding auxiliary components 3 are adjusted so that the slots 39 on the fixing blocks 38 are exactly flush with the two ends of the grinding plate 4. After the position is determined, the nuts 312 are screwed onto the screws 311 to position the fixing blocks 38 and prevent them from shifting in subsequent operations. Then, the transmission component 2 is controlled by the controller. The transmission component 2 drives the grinding auxiliary components 3 on both sides to gradually approach the two ends of the seamless steel pipe. When the grinding auxiliary components 3 move to the appropriate position, the two ends of the grinding plate 4 are inserted into the two slots 39 respectively and tightened with bolts 313 to ensure that the grinding plate 4 is installed firmly and to avoid shaking or falling off during the grinding process.

[0032] After all preparations are completed, the second motor 50 is started. The operation of the second motor 50 drives a turntable 30 to rotate. The rotation of the turntable 30 is transmitted to the grinding plate 4, so that the grinding plate 4 can perform efficient grinding on the inner wall of the seamless steel pipe.

[0033] It should be understood that the specific embodiments described above are merely illustrative or explanatory of the principles of this utility model and do not constitute a limitation thereof. Therefore, any modifications, equivalent substitutions, improvements, etc., made without departing from the spirit and scope of this utility model should be included within its protection scope. Furthermore, the appended claims are intended to cover all variations and modifications falling within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.

Claims

1. A small-sized seamless pipe internal grinding device, comprising a mounting table (1), wherein a pair of mounting slots (10) are symmetrically provided on the top of the mounting table (1), characterized in that: Each of the mounting slots (10) is provided with a transmission assembly (2), and each of the transmission assemblies (2) is provided with a grinding auxiliary assembly (3). A detachable grinding plate (4) is provided between the two sets of grinding auxiliary assemblies (3). The grinding auxiliary assembly (3) includes a turntable (30). A rotating rod (31) is provided on the back of the turntable (30). The rotating rod (31) is movably mounted on the third mounting plate (24) through a bearing seat (32). A double-acting screw (33) is provided in the turntable (30). Both ends of the double-acting screw (33) are provided with internal hexagonal grooves (34). A pair of positioning plates (35) are symmetrically provided on the double-acting screw (33). A [missing information] is provided on the front of the turntable (30). For the second slide (37), a moving groove (36) is provided between the two slides (37). A fixing block (38) is provided on the front of the turntable (30). A pair of sliders (310) are provided on the back of the fixing block (38). The sliders (310) are located in the slide (37). A screw (311) is provided between the two sliders (310). The screw (311) is located in the moving groove (36) and is fixed to the turntable (30) by a nut (312). A slot (39) is provided on the front of the fixing block (38). The two ends of the grinding plate (4) are respectively inserted into the slots (39) of the two fixing blocks (38) and are fixed by bolts (313).

2. The small-size seamless tube internal grinding equipment according to claim 1, characterized in that: The mounting table (1) is provided with a pair of sliding sleeves (18). The bottom of the mounting table (1) is symmetrically provided with a pair of telescopic cylinders (12). The telescopic rod of the telescopic cylinder (12) passes through the mounting table (1) and is movably disposed in the sliding sleeve (18). The top of the telescopic rod of the telescopic cylinder (12) is provided with a first mounting plate (14). The top of the first mounting plate (14) is provided with a support pad (15). The middle of the mounting table (1) is provided with a mounting frame (13). The top of the mounting frame (13) is provided with a telescopic cylinder (19). The telescopic rod of the telescopic cylinder (19) passes through the mounting frame (13) and is placed inside the mounting frame (13). The top of the telescopic rod of the telescopic cylinder (19) is provided with a second mounting plate (16). The bottom of the second mounting plate (16) is provided with a pressure pad (17).

3. The small-size seamless pipe internal grinding equipment according to claim 2, characterized in that: The transmission assembly (2) includes a first motor (20) disposed on the side of the mounting table (1). A lead screw (21) is disposed on the transmission end of the first motor (20). The lead screw (21) is movably disposed in the mounting groove (10). A drive member (22) is disposed on the lead screw (21). A nut (23) is disposed in the drive member (22). The nut (23) is threaded on the lead screw (21). A third mounting plate (24) is disposed on the top of the drive member (22). The grinding auxiliary assembly (3) is disposed on the third mounting plate (24).

4. The small-size seamless tube internal grinding equipment according to claim 3, characterized in that: Each mounting slot (10) has a pair of sliding grooves (11) on both sides, and the bottom sides of the third mounting plate (24) are symmetrically provided with sliders (25), which are located in the sliding grooves (11).

5. The small-size seamless pipe internal grinding equipment according to claim 4, characterized in that: One of the third mounting plates (24) has a mounting bracket (5) on its back. A second motor (50) is mounted on the mounting bracket (5). The transmission end of the second motor (50) is connected to the tail end of one of the rotating rods (31) via a coupling (51).

Images