Leveling tool for drilling of inner ring and outer ring of slewing bearing

Abstract

The utility model belongs to the technical field of bearing processing, and discloses a leveling tool for drilling inner and outer rings of a slewing bearing, which comprises more than two fixed bases arranged on the lower end surfaces of the inner and outer rings of the slewing bearing by taking the circle center of the inner and outer rings of the slewing bearing on a drilling machine as the center, and the fixed bases are used for supplementing the working range of a working table of the drilling machine. The tool comprises a fixing device and an adjusting device arranged at the upper end of the fixing device, the fixing base comprises a bottom plate, a cylinder and a top cover, the cylinder is arranged in the center of the bottom plate, the adjusting device comprises an adjusting cylinder and a screw rod, the screw rod is arranged in the adjusting cylinder, and the screw rod is connected into the adjusting cylinder through threads and used for adjusting the vertical height of the tool. When the end faces of the inner and outer rings of the slewing bearing are drilled, the inner and outer rings of the slewing bearing can be supported by placing a plurality of supplementary workbench tools in the outer circumference range of the lower end faces of the inner and outer rings of the slewing bearing, and the end face levelness of the inner and outer rings of the slewing bearing can be quickly adjusted to meet the requirement; and the inner and outer rings of the slewing bearing are drilled in cooperation with a drilling machine.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical processing technology, specifically relating to a leveling fixture for drilling the inner and outer rings of a slewing bearing. Background Technology

[0002] Slewing bearing inner and outer rings, also known as slewing bearings or rotary bearings, are large bearings capable of withstanding comprehensive loads. They can simultaneously withstand large axial and radial loads and overturning moments. Slewing bearing inner and outer rings are widely used in large rotating devices of equipment such as hoisting machinery, mining machinery, construction machinery, port machinery, marine machinery, and high-precision radar machinery and missile launchers. Slewing bearing inner and outer rings are characterized by their compact structure, light weight, high load-bearing capacity, and flexible movement. Drilling is a crucial step in the machining process of slewing bearing inner and outer rings, directly affecting the bearing's performance, as it enables the bearing to be installed, fixed, or connected to other mechanical components for connection and transmission. The diameters of the inner and outer rings of slewing bearings are usually quite large, ranging from 0.4 meters to 10 meters, and some can even reach 40 meters. When drilling holes in the end faces of the inner and outer rings of the bearing, the operating table of the drilling machine has limited size and cannot accommodate large workpieces. The operating table of the drilling machine cannot hold the entire inner and outer rings of the slewing bearing, so an additional worktable is needed to support the inner and outer rings of the slewing bearing and to quickly adjust them so that the end faces of the inner and outer rings are level to the standard, thus allowing the drilling of the inner and outer rings of the slewing bearing. Utility Model Content

[0003] To address the aforementioned technical problems, this invention provides a leveling fixture for drilling the inner and outer rings of a slewing bearing. When drilling the end faces of the inner and outer rings, multiple supplementary worktables are placed within the outer circumference of the lower end faces of the inner and outer rings. These worktables provide support to the inner and outer rings, quickly adjusting the end faces to achieve the required levelness. This allows for drilling with a drilling machine. Furthermore, the fixture allows for rapid adjustment of the end faces of the inner and outer rings during drilling, ensuring drilling accuracy and improving work efficiency.

[0004] The technical solution adopted in this utility model is a leveling fixture for drilling the inner and outer rings of a slewing bearing. It includes two or more fixed bases arranged on the lower end face of the inner and outer rings of the bearing, centered on the center of the inner and outer rings on the drilling machine; a working range for supplementing the working table of the drilling machine; and an adjustment device arranged on the upper end of the fixed bases. The adjustment device is used to quickly adjust the levelness of the inner and outer rings of the slewing bearing to be processed on the drilling machine. The fixed base includes a base plate, a cylinder, and a top cover. The cylinder is detachably arranged at the center of the base plate. The top cover is a solid disc with a protrusion at its center and is detachably arranged inside the cylinder. The adjustment device includes an adjustment cylinder and a screw. The screw is arranged inside the adjustment cylinder and is threadedly connected to the adjustment cylinder for adjusting the vertical height of the fixture. A connecting rod is arranged at the upper end of the screw, and a first handle is inserted through the connecting rod. A support portion is arranged on the upper end face of the connecting rod for supporting the lower end face of the inner and outer rings of the slewing bearing.

[0005] Specifically, the base plate is a solid disc with an annular protrusion at the center. Three protrusions are symmetrically arranged along the outer circumference of the annular protrusion. The inner circumference of the lower part of the cylinder has a groove corresponding to the protrusions on the fixed base. The groove and the protrusion cooperate to fix the cylinder on the fixed base.

[0006] Specifically, it also includes a rotary clamping device separately mounted on a fixed base, used to clamp the inner and outer rings of the slewing bearing to be processed, so that it remains fixed during drilling. The rotary clamping device includes a base, a clamping component, a limiting component, and a pressure plate. The base is a rectangular block structure with two parallel threaded holes. The clamping component and the limiting component are fixed to the base through the threaded holes. The pressure plate is a rectangular block structure with threaded holes. The clamping component passes through the threaded holes on the pressure plate. An arc groove is provided on the lower surface of the pressure plate, and the upper end of the limiting component is located in the arc groove.

[0007] Specifically, the clamping component includes a stud, a nut, a pressure plate extending through the upper end of the stud, a second handle on the stud for tightening and loosening the stud, a threaded hole on the left side of the base at the lower end of the stud, a nut on the stud for locking the stud, a spring on the outer circumference of the stud with a flat washer extending through the spring for keeping the pressure plate in a raised state, and the second handle releasing the pressure plate pushes the flat washer to raise the pressure plate for easy loading and unloading of workpieces, a square boss at the upper end of the stud, and a second handle on the square boss, the second handle including a fixing part and a holding part, the fixing part being a hollow cylindrical structure with a square hole in the center for cooperating with the square boss for rotating and loosening the stud, and the holding part being a long rod shape for easy gripping with the fixing part.

[0008] Specifically, the limiting component includes a support screw, the upper part of which is cylindrical, and a hexagonal boss is provided below the cylindrical part. The hexagonal boss is detachably set in an arc groove on the lower end face of the pressure plate, and cooperates with the arc groove to limit the rotation position of the pressure plate. The lower part of the support screw is threaded, and the support screw is connected to the base through the lower thread.

[0009] The beneficial effects of this utility model are as follows: 1. When drilling holes in the end faces of the inner and outer rings of the slewing bearing using a drilling machine, multiple supplementary worktables are placed within the outer circumference of the lower end faces of the inner and outer rings of the slewing bearing. These worktables can provide support for the inner and outer rings of the slewing bearing as supplementary worktables. Furthermore, the end face level of the inner and outer rings of the slewing bearing can be quickly adjusted to meet the requirements via screws. This allows the drilling machine to drill holes in the inner and outer rings of the slewing bearing. During the drilling process, the inner and outer rings of the slewing bearing need to be repositioned before the end face level of the inner and outer rings can be quickly adjusted. This adjustment is time-saving, labor-saving, and precise, ensuring drilling accuracy and improving production efficiency.

[0010] 2. This utility model has a simple structure and is convenient and quick to install. It is placed under the workpiece during drilling as a supplementary workbench and can be retracted after drilling is completed. It does not occupy too much workshop space and saves operating space.

[0011] 3. This utility model can also be equipped with a rotary clamping device on the fixed base for clamping the inner and outer rings of the slewing bearing. The rotary clamping device has a simple structure, clamps quickly and has a strong clamping force. When it is necessary to clamp the inner and outer rings of the slewing bearing, the rotary clamping device can be used to quickly clamp the inner and outer rings of the bearing. At the same time as clamping, the fixed base also provides a supporting force for the inner and outer rings of the bearing. The operation of clamping or disassembling is quick and convenient. Attached Figure Description

[0012] Figure 1 This is a three-dimensional schematic diagram of the present invention;

[0013] Figure 2 This is a three-dimensional schematic diagram of the adjustment device on the fixed base of this utility model;

[0014] Figure 3 This is an exploded schematic diagram of the adjustment device on the fixed base of this utility model;

[0015] Figure 4 This is a three-dimensional schematic diagram of the rotary pressing device of this utility model;

[0016] Figure 5 This is an exploded schematic diagram of the rotary clamping device of this utility model.

[0017] The markings in the diagram are: 1. Fixed base; 101. Base plate; 102. Cylinder; 103. Top cover; 2. Adjustment device; 201. Adjustment cylinder; 202. Screw; 203. Adjustment rod; 204. First handle; 205. Support part; 3. Rotary pressing device; 4. Base; 5. Pressing component; 501. Stud; 502. Nut; 503. Second handle; 504. Spring; 505. Flat washer; 6. Limiting component; 601. Support screw; 7. Pressure plate; 701. Threaded hole; 702. Arc groove. Detailed Implementation

[0018] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings.

[0019] Example 1: As Figure 1-3 As shown, a leveling fixture for drilling the inner and outer rings of a slewing bearing includes two or more fixed bases 1 arranged on the lower end face of the inner and outer rings of the bearing with the center of the inner and outer rings on the drilling machine as the center; a working range for supplementing the working table of the drilling machine; and an adjustment device 2 arranged on the upper end of the fixed base 1. The adjustment device 2 is used to quickly adjust the levelness of the inner and outer rings of the slewing bearing to be machined on the drilling machine. The fixed base 1 includes a base plate 101, a cylinder 102, and a top cover 103. The cylinder 102 is detachably arranged at the center position of the base plate 101, and the top cover 103... 3 is a solid disc. The top cover 103 has a protrusion at its center. The top cover is detachably installed inside the cylinder 102. The adjusting device 2 includes an adjusting cylinder 201 and a screw 202. The screw 202 is installed inside the adjusting cylinder 201 and is threadedly connected to the adjusting cylinder 201 for adjusting the vertical height of the tooling. A connecting rod 203 is installed at the upper end of the screw 202. A first handle 204 is installed through the connecting rod 203. A support part 205 is installed on the upper surface of the connecting rod 203 for supporting the lower end surfaces of the inner and outer rings of the slewing bearing.

[0020] Preferably, the base plate 101 is a solid disc with an annular protrusion at the center. Three protrusions are symmetrically arranged along the outer circumference of the annular protrusion. The inner circumference of the lower part of the cylinder 102 is provided with a groove corresponding to the protrusions on the fixed base 1. The groove and the protrusion cooperate to fix the cylinder 102 on the fixed base 1.

[0021] Preferably, it also includes a rotary clamping device 3 separately mounted on the fixed base 1, used to clamp the inner and outer rings of the slewing bearing to be processed, so that it remains fixed when the drilling machine drills. The rotary clamping device 3 includes a base 4, a clamping component 5, a limiting component 6, and a pressure plate 7. The base 4 is a rectangular block structure with two parallel threaded holes. The clamping component 5 and the limiting component 6 are fixed to the base through the threaded holes. The pressure plate 7 is a rectangular block structure with a threaded hole 701. The clamping component 5 is disposed through the threaded hole 701. The lower surface of the pressure plate 7 is provided with an arc groove 702. The upper end of the limiting component 6 is disposed in the arc groove 702.

[0022] Preferably, the clamping component 5 includes a stud 501, a nut 502, a pressure plate 7 passing through the upper end of the stud 501, a handle 503 for tightening and loosening the stud 501, a threaded hole on the left side of the base 4 at the lower end of the stud 501, a nut 502 for locking the stud 501, a spring 504 on the outer circumference of the stud 501, a flat washer 505 passing through the spring 504, and the spring 504 for... The pressure plate remains in the raised state. When the handle is released from the pressure plate 7, the flat washer 505 is pushed to raise the pressure plate 7, which facilitates loading and unloading of workpieces. The upper end of the stud 501 is provided with a square boss, and a second handle 503 is provided on the square boss. The second handle 503 includes a fixing part and a hand-holding part. The fixing part is a hollow cylindrical structure with a square hole in the center, which is used to cooperate with the square boss for rotating and loosening the stud. The hand-holding part is a long rod shape, which cooperates with the fixing part for easy gripping.

[0023] Preferably, the limiting component 6 includes a support screw 601. The upper part of the support screw 601 is a cylindrical part, and an external hexagonal boss is provided on the lower part of the cylindrical part. The external hexagonal boss is detachably disposed in the arc groove 702 on the lower end face of the pressure plate 7, and cooperates with the arc groove 702 to limit the rotation position of the pressure plate 7. The lower part of the support screw 601 is threaded, and the support screw 601 is connected to the base 4 through the lower thread.

[0024] Working process: When drilling is required on the inner and outer ring end faces of the slewing bearing, two or more fixed bases 1 are set on the lower end face of the bearing with the center of the inner and outer rings of the slewing bearing as the center. These bases are used to supplement the working range of the drilling machine's worktable. The number of fixed bases 1 can be increased according to the specific diameter of the inner and outer rings of the slewing bearing. The adjustment device 2 on the upper end of the fixed base 1 is used to quickly adjust the level of the inner and outer rings of the slewing bearing to be processed on the drilling machine. The level of the end faces of the inner and outer rings of the slewing bearing is adjusted by holding the first handle 204 and operating the height of the screw 202 in the adjusting cylinder 201. After the adjustment is up to standard, the workpiece can be drilled. If the diameter of the inner and outer rings of the slewing bearing is too large and exceeds the working range of the drilling machine, the position of the inner and outer rings of the slewing bearing can be adjusted. After adjustment, the level can be adjusted again and drilling can continue. After the hole is drilled, the fixed base 1 and the adjustment device 2 can be retracted. This does not occupy too much space in the workshop, saves operating space, and improves work efficiency.

[0025] Example 2: Figure 4-5 As shown, when the drilling machine drills holes in the inner and outer rings of the slewing bearing and needs to clamp the inner and outer rings, the base 4 is placed on the lower end face of the inner and outer rings of the slewing bearing, and the pressure plate 7 is placed on the upper end face of the inner and outer rings of the slewing bearing. The inner and outer rings of the slewing bearing are clamped by adjusting the second handle 503 and the adjusting stud 501. When it is necessary to loosen, the second handle 503 and the adjusting stud are rotated in the opposite direction to loosen the inner and outer rings of the slewing bearing. The operation is simple and the adjustment is quick.

Claims

1. A rotary bearing inner and outer ring drilling leveling tool, characterized in that: The application relates to a fixed base (1) provided on the lower end surface of the inner and outer rings of a slewing bearing on a drilling machine, two or more than two fixed bases (1) are arranged in the center of the inner and outer rings of the slewing bearing, the fixed base (1) is used for supplementing the working range of the workbench of the drilling machine, and an adjusting device (2) is arranged on the upper end of the fixed base (1); the adjusting device (2) is used for quickly adjusting the levelness of the inner and outer rings of the slewing bearing to be machined on the drilling machine; the fixed base (1) comprises a bottom plate (101), a cylinder (102) and a top cover (103); the cylinder (102) is detachably arranged at the center position of the bottom plate (101); the top cover (103) is a solid disc; a protrusion is arranged at the center position of the top cover (103); the top cover (103) is detachably arranged in the cylinder (102); the adjusting device (2) comprises an adjusting cylinder (201) and a screw rod (202); the screw rod (202) is arranged in the adjusting cylinder (201); the screw rod (202) is connected in the adjusting cylinder (201) through threads and is used for adjusting the up-down height of the tooling; a connecting rod (203) is arranged at the upper end of the screw rod (202); a first handle (204) is arranged in the connecting rod (203); a supporting part (205) is arranged on the upper end surface of the connecting rod (203) and is used for supporting the lower end surface of the inner and outer rings of the slewing bearing.

2. The leveling tool for drilling the inner and outer rings of the slewing bearing according to claim 1, characterized in that: The bottom plate (101) is a solid disc; an annular protrusion is arranged at the center position of the bottom plate (101); three protrusions are symmetrically arranged on the annular protrusion along the outer circumferential direction of the annular protrusion; grooves corresponding to the protrusions on the fixed base (1) are arranged on the inner circumferential surface of the lower part of the cylinder (102); the grooves and the protrusions are matched to fix the cylinder (102) on the fixed base (1).

3. The leveling tool for drilling the inner and outer rings of the slewing bearing according to claim 1, characterized in that: The application also discloses a rotating pressing device (3) arranged on the fixed base (1) and used for clamping the inner and outer rings of the slewing bearing to be machined, so that the inner and outer rings of the slewing bearing are kept in a fixed state when the drilling machine drills holes; the rotating pressing device (3) comprises a base (4), a pressing part (5), a limiting part (6) and a pressing plate (7); the base (4) is a rectangular block structure; two parallel threaded holes are arranged on the base (4); the pressing part (5) and the limiting part (6) are fixed on the base (4) through the threaded holes; the pressing plate (7) is a rectangular block structure; a threaded hole (701) is arranged on the pressing plate (7); the pressing part (5) is arranged in the threaded hole (701) of the pressing plate (7); a circular arc groove (702) is arranged on the lower surface of the pressing plate (7); and the limiting part (6) is arranged in the circular arc groove (702).

4. The leveling tool for drilling the inner and outer rings of the slewing bearing according to claim 3, characterized in that: The pressing component (5) comprises a stud (501), a nut (502), a pressing plate (7) penetrating the upper end of the stud (501), a second handle (503) arranged on the stud (501) and used for tightening and loosening the stud, a threaded hole arranged on the left side of the base (4) and into which the lower end of the stud (501) is arranged, the nut (502) arranged on the stud (501) and used for locking the stud (501), a spring (504) arranged on the outer circumference of the stud (501), a flat washer (505) penetrating the spring (504), the spring (504) used for keeping the pressing plate in a raised state, the second handle (503) loosening the pressing plate and pushing the flat washer (505) to keep the pressing plate (7) in a raised state, the stud (501) having a square boss arranged on the upper end, the square boss having the second handle (503) arranged thereon, the second handle (503) comprising a fixed part and a handheld part, the fixed part being a hollow cylindrical structure, the fixed part having a square hole arranged at the center and used for cooperating with the square boss to rotate and loosen the stud, and the handheld part being a long rod shape and cooperating with the fixed part to facilitate grasping.

5. The leveling tool for drilling the inner and outer rings of the slewing bearing according to claim 3, characterized in that: The limiting component (6) comprises a supporting screw (601), the upper part of the supporting screw (601) being a cylindrical part, the lower part of the cylindrical part having an outer hexagonal boss arranged therein, the outer hexagonal boss being detachably arranged in an arc groove (702) arranged on the lower end surface of the pressing plate (7) and cooperating with the arc groove (702) to limit the position of the pressing plate (7), and the lower part of the supporting screw (601) being threaded, the supporting screw (601) being connected to the base (4) through the lower part.

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