Bench drilling machine and method for manufacturing cast iron well lid

Abstract

The invention relates to the technical field of cast iron well lid manufacturing, and provides a bench drilling machine for cast iron well lid manufacturing and a method. The bench drilling machine for cast iron well lid manufacturing comprises a base, a machining position adjusting frame, a power plate, a grinding barrel, a planetary grinding power assembly, a material carrying power box and a material carrying frame; a drilling power box is installed on the lifting cylinder, the machining position adjusting frame penetrates through the first position adjusting assembly and is arranged on the drilling power box in a sliding mode, the power plate is arranged at the bottom of the machining position adjusting frame, the drilling assembly penetrates through the power plate, the power plate is sleeved with the grinding cylinder, and the planetary grinding power assembly is arranged in the grinding cylinder and connected with the drilling assembly. The planetary grinding power assembly comprises a plurality of planetary gears. By means of the technical scheme, the technical problem that in the prior art, when a bench drilling machine is used for machining and manufacturing a cast iron well lid, the machining efficiency is low is solved.

Description

Technical Field

[0001] This disclosure relates to the field of cast iron manhole cover manufacturing technology, specifically to a bench drill and method for manufacturing cast iron manhole covers. Background Technology

[0002] In the field of machining, bench drills are a commonly used small drilling equipment, widely used for hole machining of various small and medium-sized workpieces. The structure of existing bench drills usually includes core components such as base, column, worktable, spindle box and drive mechanism. Its working principle is to adjust the drill bit speed, feed rate and worktable position to meet drilling needs of different hole diameters and depths.

[0003] When manufacturing cast iron manhole covers, since they are produced through casting, molten iron often overflows and forms burrs on the surface during the casting process. Existing bench drills typically fix the manhole cover to the drill bit, manually adjust it to align the drill bit with the hole, and then control the drill bit to move downwards to complete the drilling operation. The manhole cover is then moved to a bench drill specifically for boring to remove the burrs. This process requires multiple bench drills with different processes, and the frequent loading, unloading, and moving of the manhole cover consumes a significant amount of time and manpower, resulting in extremely low production efficiency and making it difficult to meet the ever-increasing demand for manhole covers. Summary of the Invention

[0004] To overcome the above-mentioned defects, embodiments of this disclosure provide a bench drill and method for manufacturing cast iron manhole covers, in order to solve the technical problem mentioned in the background art, that the bench drill in the prior art has low processing efficiency when processing and manufacturing cast iron manhole covers.

[0005] The technical solution disclosed herein is as follows: A bench drill for manufacturing cast iron manhole covers, comprising a base, a machining and adjustment frame, a power plate, a grinding cylinder, a planetary grinding power assembly, a material-carrying power box, and a material-carrying frame; A lifting cylinder is installed on one side of the base, and a drilling power box is installed on the lifting cylinder; The machining adjustment frame is slidably mounted on the drilling power box through the first adjustment component; The power plate is located at the bottom of the processing and adjusting frame, and a drilling assembly is passed through the power plate; The grinding cylinder is sleeved on the power plate; The planetary grinding power assembly is disposed inside the grinding cylinder and connected to the drilling assembly. The planetary grinding power assembly includes a plurality of planetary gears, and each planetary gear has a grinding assembly at its bottom. The material-carrying power box is mounted on the base; The material carrier is slidably mounted on the material carrier power box through the second adjustment component, and the material carrier is equipped with a manhole cover positioning component that can automatically clamp the cast iron manhole cover.

[0006] Based on the aforementioned scheme, the first adjustment component includes an adjustment lead screw and an adjustment motor; The adjusting lead screw is rotatably mounted inside the drilling power box, and an adjusting ball nut assembly is driven on the adjusting lead screw. The adjusting ball nut assembly is connected to the machining adjusting frame. The first adjusting motor is installed on one side of the drilling power box, and the output end of the first adjusting motor is connected to one end of the first adjusting screw.

[0007] Based on the aforementioned scheme, the drilling assembly includes a power shaft, a power motor, a three-jaw chuck, and a drilling bit; The power shaft passes through and is rotatably mounted on the power plate; The power motor is mounted on the power plate, and the output end of the power motor is connected to one end of the power shaft; The three-jaw chuck is located at the other end of the power shaft; The drill bit is detachably mounted inside the three-jaw chuck.

[0008] As a preferred technical solution of this disclosure, the planetary grinding power assembly further includes a sun gear, an external gear ring, a positioning rod, and a positioning ring track; The sun gear is mounted on the drive shaft; The external gear ring is disposed on the outer wall of the grinding cylinder, and the planetary gear meshes between the sun gear and the external gear ring; The positioning rod is provided in a plurality of them, and each positioning rod corresponds to a planetary gear. One end of the positioning rod is rotatably mounted on the planetary gear. The positioning ring is disposed on the grinding cylinder, and one end of the positioning rod is rotatable and slidably disposed within the positioning ring.

[0009] As a preferred technical solution of this disclosure, the grinding assembly includes an adjusting cylinder, a hexagonal grinding adjusting rod, a grinding positioning spring, and a grinding head; The adjusting cylinder is mounted on the planetary gear; The hexagonal grinding adjustment rod passes through and slides on the side of the adjustment cylinder away from the planetary gear; The grinding positioning spring is located inside the adjusting cylinder and is disposed between the adjusting cylinder and the hexagonal grinding adjusting rod; The grinding head is detachably mounted on the side of the hexagonal grinding adjustment rod away from the adjustment cylinder.

[0010] Based on the aforementioned scheme, the second adjustment component includes an adjustment screw two and an adjustment motor two; The second adjusting screw is rotatably mounted inside the material-carrying power box. The second adjusting screw is equipped with a second adjusting ball nut assembly, which is connected to the material-carrying frame. The second adjusting motor is installed on one side of the material-carrying power box, and the output end of the second adjusting motor is connected to one end of the second adjusting screw.

[0011] As a preferred technical solution of this disclosure, the manhole cover positioning assembly includes a positioning material carrier, a positioning power unit, and a clamping positioning unit; The positioning material carrier is mounted on the material carrier frame; The positioning power unit is disposed through the positioning material carrier cylinder; The clamping and positioning part is provided in several parts, and the clamping and positioning parts are equally angled and pass through the positioning material carrier cylinder, and the clamping and positioning parts are engaged with the positioning power part.

[0012] Furthermore, based on the aforementioned solution, the positioning power unit includes a clamping motor and a main bevel gear; The clamping motor is installed at the bottom of the positioning material carrier cylinder; The main bevel gear is mounted on the output end of the clamping motor and is located inside the positioning loading cylinder.

[0013] Furthermore, based on the aforementioned scheme, the clamping and positioning part includes a clamping cylinder, a hexagonal clamping tube, a clamping bent rod, a clamping screw, and a bevel gear; The clamping cylinder is disposed on one side of the positioning loading cylinder; The hexagonal clamping tube passes through and is slidably disposed on the side of the clamping cylinder away from the positioning loading cylinder; The clamping bend is located on the side of the hexagonal clamping tube away from the clamping cylinder. The clamping screw passes through and is rotatably mounted on one side of the positioning material carrier cylinder. One end of the clamping screw passes through the hexagonal clamping tube. A clamping ball nut assembly is driven on the clamping screw, and the clamping ball nut assembly is connected to the hexagonal clamping tube. The driven bevel gear is located at one end of the clamping screw, and the driven bevel gear meshes with the main bevel gear.

[0014] A method of using a bench drill for manufacturing cast iron manhole covers, comprising the following steps: Step 1: Workpiece clamping. Place the cast iron manhole cover to be processed on the positioning loading cylinder, ensuring that the manhole cover is placed stably. Then start the clamping motor, which drives the driven bevel gear to rotate through the main bevel gear, causing the clamping screw to rotate. The rotation of the clamping screw drives the clamping ball nut assembly to move, which in turn pushes the hexagonal clamping tube to slide in the clamping cylinder, causing the clamping bent rod to move towards the manhole cover, so that the clamping bent rod tightly clamps the cast iron manhole cover and fixes the position of the cast iron manhole cover. Step 2: Adjusting the processing position. According to the requirements of the drilling position, the second adjusting motor can be started to drive the second adjusting screw to rotate. Through the second adjusting ball nut assembly, the material carrier slides on the material power box to adjust the manhole cover to the bottom of the drilling power box. Then, the first adjusting motor can be started to drive the first adjusting screw to rotate. Through the first adjusting ball nut assembly, the processing adjusting frame slides on the drilling power box to precisely adjust the drilling assembly and grinding cylinder to the top of the processing position. Step 3: Drilling and Grinding. When drilling holes in the cast iron manhole cover, start the power motor. The output of the power motor drives the power shaft and the drill bit to rotate at high speed. Then, by starting the lifting cylinder, the entire drilling power box is lowered. The rotation of the drill bit can drill holes in the cast iron manhole cover. After drilling the cast iron manhole cover, when grinding the surface of the cast iron manhole cover, remove the drill bit, start the power motor, and the rotation of the power shaft drives the sun gear to rotate. The sun gear drives the planetary gears that mesh with it to perform planetary motion between the sun gear and the external gear ring. The motion of the planetary gears drives the grinding assembly to perform rotation and revolution. The rotation of the grinding head grinds the hole wall produced by drilling.

[0015] The beneficial effects of this disclosure are as follows: 1. In this disclosure, by setting up a drilling assembly, a planetary grinding power assembly, and a grinding assembly, the drilling assembly and the planetary grinding power assembly are integrated on the same processing and positioning frame. Through the linkage design of the power shaft, after drilling is completed, there is no need to change equipment or re-clamp the workpiece. Only the drilling bit needs to be removed to switch to the grinding mode. In the grinding mode, in the planetary grinding power assembly, the sun gear drives the planetary gear to perform planetary motion between the sun gear and the external gear ring, so that the grinding assembly completes both rotation and revolution at the same time. It can perform all-round and efficient grinding on the hole wall and surrounding surface after drilling, effectively reducing the process changeover time. Compared with traditional split processing equipment, the processing efficiency is more convenient. 2. In this disclosure, by setting up a manhole cover positioning component, the manhole cover positioning component adopts multiple sets of clamping positioning parts working together. Through the meshing transmission of the main bevel gear and the driven bevel gear, the clamping bending rod is driven to tighten or loosen synchronously. It can quickly adapt to cast iron manhole covers of different sizes, and the clamping force is uniform, avoiding displacement of the workpiece during processing and significantly reducing the error rate of manual positioning. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments of this disclosure will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this disclosure and these drawings without any creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of a bench drill for manufacturing cast iron manhole covers according to an embodiment of the present disclosure; Figure 2 This is a partial cross-sectional structural schematic diagram of a bench drill for manufacturing cast iron manhole covers according to an embodiment of the present disclosure; Figure 3 For this disclosure Figure 2 A magnified schematic diagram of the partial structure at point A in the middle; Figure 4 For this disclosure Figure 2 A magnified schematic diagram of the local structure at point B; Figure 5 For this disclosure Figure 2 A magnified schematic diagram of the structure at point C in the middle; Figure 6 For this disclosure Figure 2 A magnified schematic diagram of the local structure at point D; Figure 7 This is a schematic diagram of the structure of the power plate, the grinding cylinder drilling assembly, the planetary grinding power assembly and the grinding assembly in an embodiment of this disclosure. Figure 8 This is a partial cross-sectional structural diagram showing the engagement of the planetary gear and the grinding assembly in an embodiment of this disclosure. Figure 9 This is a partial cross-sectional structural diagram of the clamping and positioning part in an embodiment of this disclosure.

[0018] In the diagram: 001, First positioning component; 002, Drilling component; 003, Planetary grinding power component; 004, Grinding component; 005, Second positioning component; 006, Manhole cover positioning component; 1. Base; 2. Lifting cylinder; 3. Drilling power box; 4. Machining adjustment frame; 5. Power plate; 6. Grinding cylinder; 7. Planetary gear; 8. Material-carrying power box; 9. Material-carrying frame; 10. Adjustment screw one; 11. Adjustment ball nut assembly one; 12. Adjustment motor one; 13. Power shaft; 14. Power motor; 15. Three-jaw chuck; 16. Drill bit; 17. Sun gear; 18. External gear ring; 19. Positioning rod; 20. 21. Positioning ring; 22. Adjusting cylinder; 23. Hexagonal grinding adjusting rod; 24. Grinding positioning spring; 25. Grinding head; 26. Adjusting screw II; 27. Adjusting ball nut assembly II; 28. Adjusting motor II; 29. ​​Positioning loading cylinder; 30. Clamping motor; 31. Main bevel gear; 32. Clamping cylinder; 33. Hexagonal clamping tube; 34. Clamping bent rod; 35. Clamping screw; 36. Clamping ball nut assembly; 37. Driven bevel gear. Detailed Implementation

[0019] The present disclosure will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present disclosure and are not intended to limit the scope of the disclosure.

[0020] To keep the drawings concise, each drawing only schematically shows the parts relevant to the disclosure; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0021] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.

[0022] In this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0023] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.

[0024] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0025] Example 1, as Figures 1-9 As shown, a bench drill for manufacturing cast iron manhole covers includes a base 1, a machining and adjustment frame 4, a power plate 5, a grinding cylinder 6, a planetary grinding power assembly 003, a material-carrying power box 8, and a material-carrying frame 9.

[0026] As mentioned above, a lifting cylinder 2 is installed on one side of the base 1, and a drilling power box 3 is installed on the lifting cylinder 2. By starting the lifting cylinder 2, the drilling power box 3 can be driven to adjust its vertical height.

[0027] As described above, the machining adjustment frame 4 is slidably mounted on the drilling power box 3 through the first adjustment component 001. The first adjustment component 001 includes an adjustment screw 10 and an adjustment motor 12. The adjustment screw 10 is rotatably mounted inside the drilling power box 3. An adjustment ball nut assembly 11 is driven on the adjustment screw 10. The adjustment ball nut assembly 11 is connected to the machining adjustment frame 4. The adjustment motor 12 is mounted on one side of the drilling power box 3. The output end of the adjustment motor 12 is connected to one end of the adjustment screw 10.

[0028] Specifically, when adjusting the position of the machining adjustment frame 4, the adjustment motor 12 is started. The output end of the adjustment motor 12 can drive the adjustment screw 10 to rotate. The rotation of the adjustment screw 10 can cause the adjustment ball nut assembly 11 to move linearly. The movement of the adjustment ball nut assembly 11 can drive the machining adjustment frame 4 to move, thereby realizing the adjustment of the position of the machining adjustment frame 4.

[0029] As described above, the power plate 5 is located at the bottom of the processing and positioning frame 4. A drilling assembly 002 passes through the power plate 5. The drilling assembly 002 includes a power shaft 13, a power motor 14, a three-jaw chuck 15, and a drilling bit 16. The power shaft 13 passes through and is rotatably mounted on the power plate 5. The power motor 14 is mounted on the power plate 5. The output end of the power motor 14 is connected to one end of the power shaft 13. The three-jaw chuck 15 is located at the other end of the power shaft 13. The drilling bit 16 is detachably mounted inside the three-jaw chuck 15.

[0030] Specifically, when drilling holes in cast iron manhole covers, replace the drill bit 16 with a drill bit 16 that is compatible with the drilling hole, fix the drill bit 16 with a three-jaw chuck 15, and then start the power motor 14. The output end of the power motor 14 can drive the power shaft to rotate. The rotation of the power shaft 13 can drive the three-jaw chuck 15 and the drill bit 16 to rotate at high speed. The drilling operation can be performed on the cast iron by rotating the drill bit 16.

[0031] As described above, the grinding cylinder 6 is mounted on the power plate 5, the planetary grinding power assembly 003 is located inside the grinding cylinder 6 and is connected to the drilling assembly 002. The planetary grinding power assembly 003 includes several planetary gears 7, and each planetary gear 7 has a grinding assembly 004 at its bottom.

[0032] The planetary grinding power assembly 003 also includes a sun gear 17, an external gear ring 18, a positioning rod 19, and a positioning ring channel 20. The sun gear 17 is mounted on the power shaft 13, the external gear ring 18 is mounted on the outer wall of the grinding cylinder 6, the planetary gear 7 meshes between the sun gear 17 and the external gear ring 18, and there are several positioning rods 19, each corresponding to a planetary gear 7. One end of the positioning rod 19 is rotatably mounted on the planetary gear 7, and the positioning ring channel 20 is mounted on the grinding cylinder 6. One end of the positioning rod 19 can rotate and slide within the positioning ring channel 20.

[0033] Specifically, when the power shaft 13 rotates, the power shaft 13 can drive the sun gear 17 to rotate, and the sun gear 17 drives the planetary gear 7 meshing with it to perform planetary motion between the sun gear 17 and the external gear ring 18. The motion of the planetary gear 7 drives the grinding assembly 004 to perform rotation and revolution, and the rotation of the grinding head 24 grinds the hole wall generated by drilling.

[0034] When the planetary gear 7 rotates, the positioning rod 19 and the positioning ring 20 are set so that the positioning rod 19 can slide and rotate within the positioning ring 20. By rotating the positioning rod 19 and the planetary gear 7, the position of the planetary gear 7 can be positioned without affecting the normal movement of the planetary gear 7.

[0035] The grinding assembly 004 includes an adjusting cylinder 21, a hexagonal grinding adjusting rod 22, a grinding positioning spring 23, and a grinding head 24. The adjusting cylinder 21 is mounted on the planetary gear 7. The hexagonal grinding adjusting rod 22 passes through and slides on the side of the adjusting cylinder 21 away from the planetary gear 7. The grinding positioning spring 23 is located inside the adjusting cylinder 21 and is positioned between the adjusting cylinder 21 and the hexagonal grinding adjusting rod 22. The grinding head 24 is detachably mounted on the side of the hexagonal grinding adjusting rod 22 away from the adjusting cylinder 21.

[0036] Specifically, through the cooperation of the hexagonal grinding adjustment rod 22 and the grinding positioning spring 23, the hexagonal grinding adjustment rod 22 can slide inside the adjustment cylinder 21. When grinding the surface of the cast iron manhole cover, the extension and retraction of the grinding head 24 can be automatically adjusted according to the flatness of the workpiece surface to ensure that the grinding pressure remains stable and effectively avoid the problems of over-grinding or insufficient grinding.

[0037] As described above, the material-carrying power box 8 is mounted on the base 1, and the material-carrying frame 9 is slidably mounted on the material-carrying power box 8 through the second adjustment component 005. The material-carrying frame 9 is equipped with a manhole cover positioning component 006 that can automatically clamp the cast iron manhole cover.

[0038] The second adjustment component 005 includes an adjustment screw 25 and an adjustment motor 27. The adjustment screw 25 is rotatably mounted inside the material-carrying power box 8. An adjustment ball nut assembly 26 is driven on the adjustment screw 25 and is connected to the material-carrying frame 9. The adjustment motor 27 is mounted on one side of the material-carrying power box 8, and the output end of the adjustment motor 27 is connected to one end of the adjustment screw 25.

[0039] Specifically, starting the adjustment motor 27, the output of the adjustment motor 27 can drive the adjustment screw 25 to rotate. The rotation of the adjustment screw 25 can cause the adjustment ball nut assembly 26 to move linearly. The movement of the adjustment ball nut assembly 26 can drive the material carrier 9 to move, thereby realizing the adjustment of the position of the material carrier 9.

[0040] The manhole cover positioning assembly 006 includes a positioning material carrier cylinder 28, a positioning power unit, and a clamping positioning unit. The positioning material carrier cylinder 28 is mounted on the material carrier frame 9. The positioning power unit is installed through the positioning material carrier cylinder 28. Several clamping positioning units are provided, and they are installed through the positioning material carrier cylinder 28 at equal angles. The clamping positioning units mesh with the positioning power unit. The positioning power unit includes a clamping motor 29 and a main bevel gear 30. The clamping motor 29 is installed at the bottom of the positioning material carrier cylinder 28, and the main bevel gear 30 is located at the output end of the clamping motor 29 and inside the positioning material carrier cylinder 28. The clamping positioning unit includes a clamping cylinder 31, a hexagonal clamping tube 32, and a clamping... The clamping cylinder 31 is located on one side of the positioning material loading cylinder 28. The hexagonal clamping tube 32 passes through and is slidably located on the side of the clamping cylinder 31 away from the positioning material loading cylinder 28. The clamping cylinder 33 is located on the side of the hexagonal clamping tube 32 away from the clamping cylinder 31. The clamping cylinder 34 passes through and is rotatably located on one side of the positioning material loading cylinder 28. One end of the clamping cylinder 34 passes through the hexagonal clamping tube 32. A clamping ball nut assembly 35 is driven on the clamping cylinder 34 and is connected to the hexagonal clamping tube 32. The driven bevel gear 36 is located at one end of the clamping cylinder 34 and meshes with the main bevel gear 30.

[0041] Specifically, when processing the cast iron manhole cover, the manhole cover is placed on the positioning loading cylinder 28 to ensure that the manhole cover is placed stably. Then, the clamping motor 29 is started. The output end of the clamping motor 29 drives the main bevel gear 30 to rotate. The rotation of the main bevel gear 30 drives the driven bevel gear 36 to rotate, causing the clamping screw 34 to rotate. The rotation of the clamping screw 34 drives the clamping ball nut assembly 35 to move, thereby pushing the hexagonal clamping tube 32 to slide in the clamping cylinder 31, causing the clamping bent rod 33 to move towards the manhole cover. The movement of the clamping bent rod 33 tightly clamps the cast iron manhole cover, fixing the position of the cast iron manhole cover.

[0042] Example 2: Based on Example 1, Example 2 of this disclosure proposes a method for using a bench drill for manufacturing cast iron manhole covers. The specific method is as follows: Workpiece clamping: Place the cast iron manhole cover to be processed on the positioning loading cylinder 28 to ensure that the manhole cover is placed stably. Then start the clamping motor 29, which drives the bevel gear 36 to rotate through the main bevel gear 30, causing the clamping screw 34 to rotate. The rotation of the clamping screw 34 drives the clamping ball nut assembly 35 to move, which in turn pushes the hexagonal clamping tube 32 to slide in the clamping cylinder 31, causing the clamping bent rod 33 to move towards the manhole cover, so that the clamping bent rod 33 tightly clamps the cast iron manhole cover and fixes the position of the cast iron manhole cover.

[0043] For adjusting the processing position, according to the requirements of the drilling position, the second adjusting motor 27 can be started, driving the second adjusting screw 25 to rotate. Through the second adjusting ball nut assembly 26, the material carrier 9 is driven to slide on the material power box 8, adjusting the manhole cover to below the drilling power box 3. Then, the first adjusting motor 12 is started, driving the first adjusting screw 10 to rotate. Through the first adjusting ball nut assembly 11, the processing adjusting frame 4 is driven to slide on the drilling power box 3, precisely adjusting the drilling assembly 002 and the grinding cylinder 6 to above the processing position.

[0044] Drilling and Grinding: When drilling a cast iron manhole cover, the power motor 14 is started. The output of the power motor 14 drives the power shaft 13 and the drilling bit 16 to rotate at high speed. Then, the lifting cylinder 2 is started to lower the drilling power box 3 as a whole. The rotation of the drilling bit 16 can drill the cast iron manhole cover. After drilling the cast iron manhole cover, when grinding the surface of the cast iron manhole cover, the drilling bit 16 is removed, the power motor 14 is started, and the rotation of the power shaft 13 drives the sun gear 17 to rotate. The sun gear 17 drives the planetary gear 7 meshing with it to perform planetary motion between the sun gear 17 and the external gear ring 18. The motion of the planetary gear 7 drives the grinding assembly 004 to perform rotation and revolution. The rotation of the grinding head 24 grinds the hole wall produced by drilling.

[0045] It should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure and are not intended to limit it. Although this disclosure has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this disclosure without departing from the spirit and scope of the technical solutions of this disclosure, and all such modifications and substitutions should be covered within the scope of the claims of this disclosure.

Claims

1. A bench drill for manufacturing cast iron manhole covers, characterized in that, include: A base (1) is provided with a lifting cylinder (2) installed on one side of the base (1), and a drilling power box (3) is installed on the lifting cylinder (2). The machining adjustment frame (4) is slidably mounted on the drilling power box (3) through the first adjustment component (001); A power plate (5) is provided at the bottom of the processing adjustment frame (4), and a drilling assembly (002) is provided through the power plate (5). The grinding cylinder (6) is fitted onto the power plate (5); The planetary grinding power assembly (003) is disposed inside the grinding cylinder (6) and connected to the drilling assembly (002). The planetary grinding power assembly (003) includes a plurality of planetary gears (7), and each planetary gear (7) is provided with a grinding assembly (004) at its bottom. A material-carrying power box (8) is mounted on the base (1); The material carrier (9) is slidably mounted on the material carrier power box (8) through the second adjustment component (005). The material carrier (9) is provided with a manhole cover positioning component (006) that can automatically clamp the cast iron manhole cover.

2. The bench drill for manufacturing cast iron manhole covers according to claim 1, characterized in that, The first adjustment component (001) includes: The first adjusting screw (10) is rotatably installed in the drilling power box (3). The first adjusting screw (10) is equipped with an adjusting ball nut assembly (11), which is connected to the machining adjusting frame (4). The first adjustment motor (12) is installed on one side of the drilling power box (3), and the output end of the first adjustment motor (12) is connected to one end of the first adjustment screw (10).

3. A bench drill for manufacturing cast iron manhole covers according to claim 2, characterized in that, The drilling assembly (002) includes: A power shaft (13) is mounted through and rotatably on the power plate (5); A power motor (14) is mounted on the power plate (5), and the output end of the power motor (14) is connected to one end of the power shaft (13); A three-jaw chuck (15) is disposed at the other end of the power shaft (13); The drilling bit (16) is detachably mounted inside the three-jaw chuck (15).

4. A bench drill for manufacturing cast iron manhole covers according to claim 3, characterized in that, The planetary grinding power assembly (003) also includes: A sun gear (17) is mounted on the drive shaft (13); An external gear ring (18) is disposed on the outer wall of the grinding cylinder (6), and the planetary gear (7) meshes between the sun gear (17) and the external gear ring (18); A number of positioning rods (19) are provided, and each positioning rod (19) corresponds to a planetary gear (7). One end of the positioning rod (19) is rotatably mounted on the planetary gear (7). A positioning ring (20) is provided on the grinding cylinder (6), and one end of the positioning rod (19) is rotatable and slidably disposed in the positioning ring (20).

5. A bench drill for manufacturing cast iron manhole covers according to claim 4, characterized in that, The polishing assembly (004) includes: Adjustment cylinder (21) is provided on the planetary gear (7); A hexagonal grinding adjustment rod (22) is inserted through and slidably disposed on the side of the adjustment cylinder (21) away from the planetary gear (7); The grinding positioning spring (23) is located inside the adjusting cylinder (21) and is disposed between the adjusting cylinder (21) and the hexagonal grinding adjusting rod (22); The grinding head (24) is detachably mounted on the side of the hexagonal grinding adjustment rod (22) away from the adjustment cylinder (21).

6. A bench drill for manufacturing cast iron manhole covers according to claim 5, characterized in that, The second adjustment component (005) includes: The second adjusting screw (25) is rotatably installed in the material loading power box (8). The second adjusting screw (25) is equipped with a second adjusting ball nut assembly (26), which is connected to the material loading frame (9). The second adjustment motor (27) is installed on one side of the material-carrying power box (8), and the output end of the second adjustment motor (27) is connected to one end of the second adjustment screw (25).

7. A bench drill for manufacturing cast iron manhole covers according to claim 6, characterized in that, The manhole cover positioning assembly (006) includes: Positioning material cylinder (28) is set on the material rack (9); The positioning power unit is installed through the positioning material cylinder (28); The clamping and positioning part is provided in several parts, and the clamping and positioning parts are equally angled and pass through the positioning material carrier (28), and the clamping and positioning parts are engaged with the positioning power part.

8. A bench drill for manufacturing cast iron manhole covers according to claim 7, characterized in that, The positioning power unit includes: A clamping motor (29) is installed at the bottom of the positioning loading cylinder (28); The main bevel gear (30) is located on the output end of the clamping motor (29) and is located inside the positioning loading cylinder (28).

9. A bench drill for manufacturing cast iron manhole covers according to claim 8, characterized in that, The clamping and positioning part includes: A clamping cylinder (31) is disposed on one side of the positioning loading cylinder (28); A hexagonal clamping tube (32) is inserted through and slidably disposed on the side of the clamping cylinder (31) away from the positioning loading cylinder (28); The clamping bend (33) is disposed on the side of the hexagonal clamping tube (32) away from the clamping cylinder (31). A clamping screw (34) is inserted through and rotatably disposed on one side of the positioning material carrier (28). One end of the clamping screw (34) is inserted into the hexagonal clamping tube (32). A clamping ball nut assembly (35) is driven on the clamping screw (34). The clamping ball nut assembly (35) is connected to the hexagonal clamping tube (32). A bevel gear (36) is disposed at one end of the clamping screw (34), and the bevel gear (36) meshes with the main bevel gear (30).

10. A method of using a bench drill for manufacturing cast iron manhole covers, comprising the bench drill for manufacturing cast iron manhole covers as described in claim 9, characterized in that... Includes the following steps: S1. Workpiece clamping: Place the cast iron manhole cover to be processed on the positioning loading cylinder (28) to ensure that the manhole cover is placed stably. Then start the clamping motor (29), which drives the bevel gear (36) to rotate through the main bevel gear (30), causing the clamping screw (34) to rotate. The rotation of the clamping screw (34) drives the clamping ball nut assembly (35) to move, thereby pushing the hexagonal clamping tube (32) to slide in the clamping cylinder (31), causing the clamping bent rod (33) to move towards the manhole cover, so that the clamping bent rod (33) tightly clamps the cast iron manhole cover and fixes the position of the cast iron manhole cover. S2. Adjusting the processing position: According to the requirements of the drilling position, the second adjustment motor (27) can be started to drive the second adjustment screw (25) to rotate. The second adjustment ball nut group (26) drives the material carrier (9) to slide on the material power box (8) to adjust the well cover to the bottom of the drilling power box (3). Then, the first adjustment motor (12) is started to drive the first adjustment screw (10) to rotate. The first adjustment ball nut group (11) drives the processing adjustment frame (4) to slide on the drilling power box (3) to precisely adjust the drilling assembly (002) and the grinding cylinder (6) to the top of the processing position. S3. Drilling and Grinding: When drilling a cast iron manhole cover, start the power motor (14). The output end of the power motor (14) can drive the power shaft (13) and the drilling bit (16) to rotate at high speed. Then, by starting the lifting cylinder (2), the drilling power box (3) is lowered as a whole. The rotation of the drilling bit (16) can drill the cast iron manhole cover. When the drilling of the cast iron manhole cover is completed and the surface of the cast iron manhole cover is ground, remove the drilling bit (16), start the power motor (14), and drive the sun gear (17) to rotate through the rotation of the power shaft (13). The sun gear (17) drives the planetary gear (7) meshing with it to perform planetary motion between the sun gear (17) and the external gear ring (18). The motion of the planetary gear (7) drives the grinding assembly (004) to perform rotation and revolution. The grinding head (24) is rotated to grind the hole wall produced by the drilling.

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