Device for improving operation stability of heavy boring bar

Abstract

The utility model belongs to the technical field of machining equipment, and discloses a device for improving operation stability of a heavy boring bar, which comprises a base, a shell is arranged at the top of the base, the boring bar penetrates through the shell, the base is provided with a driving part for driving the boring bar to move, one end of the shell extends to the outer side of the base, and the other end of the shell extends to the inner side of the base. The driving part is arranged below the shell located on the outer side of the base, a worm shaft is arranged at the top of the driving part, a guide rail is arranged at the top of the base and is as long as the base, a sliding block is arranged at the bottom of the boring rod and is as long as the boring rod, the sliding block is in sliding fit with the guide rail, and a worm nut strip is arranged on the bottom face of the sliding block. And the worm nut strip is in meshing transmission with the worm shaft. The boring bar moving device is beneficial to improving the moving stability of the boring bar.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical processing equipment technology, and specifically relates to a device for improving the smoothness of heavy boring bar operation. Background Technology

[0002] Heavy-duty boring bars are widely used in engineering fields. In the energy and petrochemical industry, they are used to machine the internal holes of reactors, pipe flanges, etc.; in the power industry, they can machine high-precision holes in steam turbine and generator components; in the aerospace industry, they can machine blade tenons and slots and fuselage structural connection holes; and in the shipbuilding industry, they can machine engine blocks, crankcases, and stern tubes, etc.

[0003] However, heavy-duty boring bars face numerous technical challenges during manufacturing processes. For example, they are prone to vibration and deformation when machining deep holes, withstand high loads, are susceptible to wear and fatigue cracks, and suffer from thermal deformation and heat dissipation issues that affect machining accuracy and stability. Therefore, improving the operational stability of heavy-duty boring bars is a pressing issue. Based on this, we propose a device to improve the operational stability of heavy-duty boring bars. Utility Model Content

[0004] The purpose of this invention is to provide a device for improving the smoothness of heavy-duty boring bar operation, thereby solving the problems existing in the prior art mentioned above.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A device for improving the smooth operation of a heavy-duty boring bar includes a base, a housing on top of the base, through which the boring bar passes, a drive component for moving the boring bar on the base, one end of the housing extending to the outside of the base, the drive component located below the housing on the outside of the base, a worm gear shaft on top of the drive component, a guide rail on top of the base with the same length as the base, a slider on the bottom of the boring bar with the same length as the boring bar, the slider slidingly engaging with the guide rail, a worm nut on the bottom surface of the slider meshing with the worm gear shaft, and a positioning mechanism on top of the housing for positioning the boring bar.

[0007] Furthermore, the positioning mechanism includes a gear shaft, with fixed seats rotatably connected to both ends of the gear shaft. The top of the housing has an opening, and the fixed seats are located on both sides of the opening at the top of the housing. The gear portion of the gear shaft passes through the housing, and a rack is provided on the top surface of the boring bar. The gear of the gear shaft meshes with the rack.

[0008] Furthermore, the worm gear is located at the bottom center of the slider, and limiting grooves are provided on both sides of the worm gear. The guide rail is provided with a corresponding slide rail that is slidably connected to the limiting grooves.

[0009] Furthermore, one side of the limiting groove is mountain-shaped, while the other side of the limiting groove is rectangular.

[0010] Furthermore, the housing is provided with a hydraulic limiting mechanism, which includes a hydraulic oil pump and a hydraulic cylinder connected by a pipeline. The hydraulic cylinder passes through the side wall of the housing and has a piston rod inside. The piston rod is perpendicular to the side wall of the boring bar, and a high-strength rubber ring is provided at the end of the piston rod. The high-strength rubber ring is used for braking the boring bar, and a spring is sleeved on the piston rod located inside the hydraulic cylinder.

[0011] Furthermore, four sets of hydraulic cylinders are symmetrically arranged on both sides of the housing.

[0012] Compared with the shortcomings and deficiencies of the prior art, the present invention has the following beneficial effects.

[0013] 1. This utility model provides a device for improving the smooth operation of a heavy-duty boring bar. The boring bar and the base are provided with a sliding fit structure of guide rail and slider. The power component outputs power through a worm shaft. The bottom of the slider is provided with a worm nut, which meshes with the worm shaft for transmission. At the same time, it cooperates with the positioning mechanism to improve the stability of the boring bar during movement.

[0014] 2. A positioning mechanism is provided on the top of the housing. In the positioning mechanism, the gear shaft meshes with the rack at the top of the boring bar. When the boring bar moves, the gear shaft is driven to rotate through the rack, which helps to position the boring bar and facilitates the smooth movement of the boring bar.

[0015] 3. The housing is equipped with a hydraulic limiting mechanism. When the boring bar is stationary, the hydraulic cylinders on both sides simultaneously press the boring bar against the high-strength rubber ring, thereby clamping and limiting the boring bar to prevent it from moving. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a device for improving the smoothness of heavy-duty boring bar operation according to the present invention.

[0017] Figure 2 This is a schematic diagram of the drive component in this utility model.

[0018] Figure 3 This is a schematic diagram of the structure of the slider and guide rail in this utility model.

[0019] Figure 4 yes Figure 3 A schematic diagram of the cross-sectional structure at point AA.

[0020] Figure 5 This is a schematic diagram of the hydraulic limiting mechanism in this utility model.

[0021] Figure 6 This is a schematic diagram of the internal structure of the hydraulic cylinder in this utility model.

[0022] Figure 7 This is a schematic diagram of the oil circuit control system in this utility model.

[0023] In the diagram: 10. Base; 11. Guide rail; 111. Slide rail; 20. Housing; 21. Support component; 30. Boring rod; 31. Slider; 311. Limiting groove; 32. Worm gear; 33. Rack; 40. Drive component; 41. Worm shaft; 50. Positioning mechanism; 51. Gear shaft; 52. Fixed seat; 60. Hydraulic limit mechanism; 61. Hydraulic oil pump; 62. Hydraulic cylinder; 63. Piston rod; 64. High-strength rubber ring; 65. Spring; 66. Oil circuit control system; 661. Oil tank; 662. Solenoid valve; 663. Diverter / combiner valve; 664. Check valve; 665. Relief valve. 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 the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0025] Reference Figures 1-7 A device for improving the smooth operation of a heavy-duty boring bar includes a base 10, a housing 20 on the top of the base 10, the housing 20 being 3m long and having horizontally extending ends, a boring bar 30 passing through the housing 20, the boring bar 30 being 17m long, a guide rail 11 located at the top of the base 10 inside the housing 20, the guide rail 11 being the same length as the base 10, a slider 31 located at the bottom of the boring bar 30, the slider 31 being arranged along the length direction of the boring bar 30, and the length of the slider 31 being the same as the length of the boring bar 30, the slider 31 being slidably engaged with the guide rail 11.

[0026] One end of the housing 20 extends along the sliding direction of the boring bar 30 to the outside of the base 10. A support member 21 is provided between the bottom of the extended portion of the housing 20 and the side wall of the base 10. The support member 21 is used to assist in supporting the housing 20. A driving member 40 is provided below the extended portion of the housing 20. The driving member 40 is used to drive the boring bar 30 to move. Specifically, a worm shaft 41 is provided at the top of the driving member 40. The extension direction of the axis of the worm shaft 41 is the same as the moving direction of the boring bar 30, and the worm shaft 41 is located below the boring bar 30. A worm nut 32 is provided at the bottom of the slider 31. The worm nut 32 meshes with the worm shaft 41 for transmission. The driving member 40 drives the worm shaft 41 to rotate. The worm shaft 41 meshes with the worm nut 32 for transmission, thereby driving the boring bar 30 to move.

[0027] In one embodiment, the worm gear 32 is positioned at the center of the bottom surface of the slider 31. The bottom surface of the slider 31 is provided with limiting grooves 311 on both sides of the worm gear 32. One limiting groove 311 is shaped like a "mountain" and the other limiting groove 311 is rectangular, forming two sets of limiting grooves 311, one mountain and one flat. The top surface of the guide rail 11 is provided with corresponding slide rails 111 of suitable shape and size on both sides. The slide rails 111 slide in cooperation with the limiting grooves 311, which helps to ensure the accuracy of the boring bar 30 when it moves and reduces the risk of the boring bar 30 deviating.

[0028] In one embodiment, a positioning mechanism 50 is provided on the top of the housing 20. The positioning mechanism 50 is used to position the boring bar 30 and improve the stability of the boring bar 30 during movement. Specifically, the positioning mechanism 50 includes a gear shaft 51 disposed on the top of the housing 20. Fixed seats 52 are provided at both ends of the gear shaft 51 and are rotatably connected to it. The fixed seats 52 are disposed on the top of the housing 20, and the top of the housing 20 has an opening. The gear portion of the gear shaft 51 passes through the housing 20. A rack 33 is provided on the top of the boring bar 30, and the rack 33 meshes with the gear. During the movement of the boring bar 30, the gear shaft 51 rotates through the meshing transmission between the rack 33 and the gear, which helps to position the boring bar 30, reduces the risk of the boring bar 30 deflection, and improves the stability of the boring bar 30's movement.

[0029] In one embodiment, the housing 20 is provided with a hydraulic limiting mechanism 60. The hydraulic limiting mechanism 60 is used to limit the boring bar 30 when it is stationary, preventing it from moving and reducing the risk of damage to the worm gear 32 and worm shaft 41. Specifically, the hydraulic limiting mechanism 60 includes a hydraulic cylinder 62, a hydraulic pump 61, and an oil circuit control system 66. The hydraulic pump 61 and the hydraulic cylinder 62 are connected by a pipeline. The hydraulic cylinders 62 are symmetrically arranged on both sides of the housing 20, preferably with four sets of hydraulic cylinders 62 on each side of the housing 20. The hydraulic cylinders 62 pass through the side wall of the housing 20, and each hydraulic cylinder 62 has a piston rod 63 inside. The piston rod 63 faces the side wall of the boring bar 30, and a high-strength rubber ring is provided at the end of the piston rod 63. 64. A spring 65 is fitted onto the piston rod 63 located inside the hydraulic cylinder 62. Under the action of the hydraulic oil pump 61, hydraulic oil enters the hydraulic cylinder 62 and pushes the piston rod 63 out, causing the high-strength rubber ring 64 to abut against the side wall of the boring bar 30, thereby limiting the boring bar 30. When the solenoid valve 662 in the oil circuit control system 66 is in the unloading position, the piston rod 63 retracts under the action of the spring 65, the high-strength rubber ring 64 separates from the side wall of the boring bar 30, and the boring bar 30 can move.

[0030] The hydraulic circuit control system 66 includes a two-position three-way solenoid valve 662, a flow divider / combiner valve 663, a check valve 664, and a relief valve 665 installed in the pipeline. The hydraulic oil pump 61 pumps the hydraulic oil in the oil tank 661 into the flow divider / combiner valve 663 through the two-position three-way solenoid valve 662, and then distributes it to each hydraulic cylinder 62 after diversion. When the hydraulic oil returns, the hydraulic oil in the hydraulic cylinder 62 returns to the oil tank 661 through the check valve 664 and the two-position three-way solenoid valve 662. The flow divider / combiner valve 663 helps to evenly distribute the hydraulic oil from the same oil source to the hydraulic cylinder 62 connected to it.

[0031] When the device for improving the smoothness of heavy-duty boring bar operation is in use, the drive component 40 drives the worm shaft 41 to rotate, and the worm shaft 41 meshes with the worm nut 32 to drive the boring bar 30 to move. During the movement of the boring bar 30, the limiting groove 311 of the slider 31 slides and engages with the slide rail 111 of the guide rail 11. At the same time, the rack 33 located at the top of the boring bar 30 drives the gear shaft 51 to rotate, thereby ensuring the stability of the boring bar 30 movement. After the drive component 40 stops power input and the boring bar 30 is braked, oil is injected into the hydraulic cylinder 62, and the piston rod 63 drives the high-strength rubber ring 64 to move towards the boring bar 30. The hydraulic cylinders 62 on both sides of the housing 20 simultaneously drive the high-strength rubber ring 64 to press against the boring bar 30, thereby limiting the boring bar 30 and preventing the boring bar 30 from shaking or moving, so as to maintain the stability of the boring bar 30 when stationary.

[0032] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A device for improving the smoothness of operation of a heavy-duty boring bar, comprising a base (10), a housing (20) on the top of the base (10), through which a boring bar (30) passes, and a driving member (40) for driving the boring bar (30) to move, characterized in that, One end of the housing (20) extends to the outside of the base (10). The drive member (40) is located below the housing (20) outside the base (10). The top of the drive member (40) is provided with a worm shaft (41). The top of the base (10) is provided with a guide rail (11). The guide rail (11) is the same length as the base (10). The bottom of the boring bar (30) is provided with a slider (31). The slider (31) is the same length as the boring bar (30). The slider (31) slides with the guide rail (11). The bottom surface of the slider (31) is provided with a worm nut (32). The worm nut (32) meshes with the worm shaft (41) for transmission. The top of the housing (20) is provided with a positioning mechanism (50). The positioning mechanism (50) is used to position the boring bar (30).

2. The device for improving the operational stability of heavy-duty boring bars as described in claim 1, characterized in that, The positioning mechanism (50) includes a gear shaft (51), with fixed seats (52) rotatably connected to both ends of the gear shaft (51). The top of the housing (20) has an opening, and the fixed seats (52) are located on both sides of the top opening of the housing (20). The gear part of the gear shaft (51) passes through the housing (20), and the top surface of the boring bar (30) is provided with a rack (33). The gear of the gear shaft (51) meshes with the rack (33).

3. The device for improving the running stability of a heavy-duty boring bar as described in claim 1, characterized in that, The worm gear (32) is located at the bottom center of the slider (31), and the two sides of the worm gear (32) are respectively provided with limiting grooves (311). The guide rail (11) is provided with a slide rail (111) that is slidably connected to the limiting grooves (311).

4. The device for improving the operational stability of heavy-duty boring bars as described in claim 3, characterized in that, One side limiting groove (311) is mountain-shaped, and the other side limiting groove (311) is rectangular.

5. The device for improving the operational stability of heavy-duty boring bars as described in claim 1, characterized in that, The housing (20) is provided with a hydraulic limiting mechanism (60), which includes a hydraulic oil pump (61) and a hydraulic cylinder (62) connected by a pipeline. The hydraulic cylinder (62) passes through the side wall of the housing (20), and a piston rod (63) is provided inside the hydraulic cylinder (62). The piston rod (63) is perpendicular to the side wall of the boring bar (30), and a high-strength rubber ring (64) is provided at the end of the piston rod (63). The high-strength rubber ring (64) is used for braking the boring bar (30). A spring (65) is sleeved on the piston rod (63) located inside the hydraulic cylinder (62).

6. The device for improving the operational stability of a heavy-duty boring bar as described in claim 5, characterized in that, Four sets of hydraulic cylinders (62) are symmetrically arranged on both sides of the housing (20).

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