Composite double-row conical bearing outer ring oil filler hole drilling die

Abstract

The utility model relates to a composite double-row conical bearing outer ring oil filler hole drilling die which comprises a U-shaped pedestal, and an indexing limiting assembly is arranged at the top of the U-shaped pedestal; the indexing plate is rotationally arranged in the opening of the U-shaped pedestal, a plurality of radial indexing holes are formed in the periphery of the indexing plate, and the indexing limiting assembly is connected with one of the indexing holes; a mounting disc is coaxially arranged on the end face of the indexing disc, a penetrating hole is formed in the position, located above the mounting disc, of the top of the U-shaped pedestal, and the center axis of the penetrating hole and the center axis of the indexing hole connected with the indexing limiting assembly are located on the same vertical plane. The indexing limiting assembly is convenient for accurately controlling the rotation and positioning operation of the indexing plate; a plurality of indexing holes are formed in the annular surface of the indexing plate at intervals, and the indexing plate is rotationally arranged in the opening of the U-shaped pedestal, so that the design can be conveniently carried out according to the requirements of machined parts; the mounting plate is coaxially mounted on the end face of the index plate and used for fixing the workpiece to be machined, so that synchronous rotation and positioning of the workpiece and the index plate are achieved, the drilling precision and the machining efficiency are improved, and large-batch workpiece machining is further achieved.

Description

Technical Field

[0001] This application relates to the field of drilling technology for oil injection holes in the outer ring of double-row tapered bearings, and particularly to a composite drilling mold for oil injection holes in the outer ring of double-row tapered bearings. Background Technology

[0002] When drilling multiple oil filling holes on the outer ring circumference of a double-row tapered roller bearing, a three-jaw chuck is used to hold the workpiece, and a universal indexing head is used to index the workpiece. However, this machining method has the following drawbacks:

[0003] (1) Existing auxiliary processing methods are time-consuming and have low processing efficiency, making them unsuitable for mass production.

[0004] (2) Although the universal dividing head can divide the oil injection hole to be drilled on the workpiece equally, there is an error between the actual drilling position of the workpiece and the division position of the universal dividing head during the actual processing, and it is urgent to improve the processing accuracy. Summary of the Invention

[0005] This application provides a composite double-row tapered bearing outer ring oil injection hole drilling mold to solve the problems in related technologies where the use of a universal dividing head to divide the workpiece into equal oil injection holes results in errors in the actual drilling position, low processing efficiency, and unsuitability for mass production.

[0006] A composite double-row tapered bearing outer ring oil injection hole drilling mold is provided, which includes a U-shaped base with an indexing and limiting component on the top; an indexing plate rotatably disposed in the opening of the U-shaped base, the outer circumference of the indexing plate having multiple radial indexing holes, the indexing and limiting component connecting to one of the indexing holes; a mounting plate coaxially provided on the end face of the indexing plate, the top of the U-shaped base and above the mounting plate having a through hole, the central axis of the through hole and the central axis of the indexing hole connected to the indexing and limiting component being located on the same vertical plane.

[0007] In some embodiments, the U-shaped base includes a vertical base and a top base and a base respectively connected vertically to the vertical base. The vertical base is provided with a transverse through slot. The indexing and limiting components and the through holes are both provided on the top base. The end face of the indexing plate away from the mounting plate is in close contact with the vertical base, and the end face is coaxially provided with a rotating plate with a transverse through slot.

[0008] In some embodiments, the indexing and limiting assembly includes a bolt and a limiting member; the top seat is provided with a threaded hole, the bolt is rotatably disposed along the length direction of the threaded hole, and the limiting member is disposed at the bottom of the bolt and connected to one of the indexing holes.

[0009] In some embodiments, the limiting element is a steel ball, which is connected to the bottom of the bolt via a compression spring; the diameter of the steel ball is larger than the diameter of the indexing hole.

[0010] In some embodiments, the limiting element is a vertical rod; the diameter of the vertical rod is the same as the diameter of the indexing hole.

[0011] In some embodiments, the number of indexing holes is eight, and the eight indexing holes are equally spaced along the annular surface of the indexing plate.

[0012] In some embodiments, a sealing element is detachably provided in the indexing hole, and the indexing limiting component is connected to one of the indexing holes without a sealing element.

[0013] In some embodiments, a locking assembly is also included, which includes a screw and a pad; the mounting plate includes a first mounting cylinder and a second mounting cylinder, the first mounting cylinder being coaxially disposed on the end face of the indexing plate away from the rotating plate, and the second mounting cylinder being coaxially disposed on the end face of the first mounting cylinder away from the indexing plate, so as to form a space for placing the workpiece; the screw is rotatably disposed on the second mounting cylinder to hold the workpiece against the indexing plate by means of the pad.

[0014] In some embodiments, the end face of the rotating disk away from the indexing disk is flush with the slot of the vertical seat away from the indexing disk, and a threaded disk is coaxially provided on the end face. A baffle assembly is provided on the threaded disk, and the baffle assembly abuts against the end face and the slot.

[0015] In some embodiments, the baffle assembly includes a thrust bearing, a washer, and a nut; the thrust bearing is provided on the rotating disk, and the inner wall of the transverse through-groove is provided with an annular groove to form a space to accommodate the thrust bearing; the washer is provided on the threaded disk and is in close contact with the thrust bearing, and a nut that abuts against the washer is rotatably provided on the threaded disk.

[0016] The beneficial effects of the technical solution provided in this application include:

[0017] This application provides a composite double-row tapered bearing outer ring oil injection hole drilling mold. A U-shaped base serves as the basic support structure of the mold, with an indexing and limiting component on its top surface for precise control of the indexing plate's rotation and positioning. The indexing plate has multiple indexing holes spaced at intervals, allowing for precise equal division as needed. These holes are rotatably positioned within the opening of the U-shaped base, facilitating adjustment according to the requirements of the workpiece. A mounting plate is coaxially mounted on the end face of the indexing plate to fix the workpiece, thereby achieving synchronous rotation and positioning of the workpiece and the indexing plate, improving drilling accuracy, and ensuring precise control during drilling. The stability of the workpiece during the process is ensured; the indexing and limiting component achieves indexing positioning by engaging or disengaging with the indexing hole, limiting the rotation angle of the indexing plate so that it can stop at the preset indexing position for accurate drilling; the through hole is located on the top of the U-shaped base and works with the mounting plate to drill holes in the workpiece. The position and size of the through hole are precisely matched with the oil injection hole on the workpiece according to the design requirements to ensure machining accuracy; thus solving the problem in related technologies where universal indexing heads are used to divide the workpiece into equal oil injection holes, resulting in errors in the actual drilling position and low processing efficiency, making it unsuitable for mass production. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the drilling mold structure provided in the embodiments of this application;

[0020] Figure 2 A right-side view of the indexing plate and perforation structure provided in an embodiment of this application;

[0021] Figure 3 This is a schematic diagram of the left-side structure without the workpiece installed, provided in an embodiment of this application.

[0022] In the diagram: 1. Machining part; 2. U-shaped base; 21. Top seat; 211. Through hole; 22. Vertical seat; 23. Base; 3. Indexing limit assembly; 31. Bolt; 32. Steel ball; 33. Compression spring; 4. Indexing plate; 41. Indexing hole; 5. Mounting plate; 51. First mounting cylinder; 52. Second mounting cylinder; 6. Rotating plate; 61. Thrust bearing; 7. Locking assembly; 71. Screw; 72. Spacer; 8. Threaded disc; 81. Washer; 82. Nut. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0024] Since in conventional technology, a universal dividing head can divide the oil injection holes of a workpiece into equal parts, but in actual processing, there is an error between the actual drilling position of the workpiece and the division position of the universal dividing head, and there is an urgent need to improve the processing accuracy, a mold is designed to realize the simultaneous division of the oil injection holes and drilling of the workpiece, so as to solve the problem of the error in the actual drilling position when using a universal dividing head to divide the workpiece into equal parts for oil injection holes in related technologies.

[0025] This application provides a composite double-row tapered bearing outer ring oil injection hole drilling mold, which can solve the problem in related technologies where the workpiece is divided into equal oil injection holes using a universal dividing head, resulting in errors in the actual drilling position.

[0026] refer to Figure 1-3 ,in Figure 1 This is a schematic diagram of the relevant structure of the drilling mold provided in the embodiment of this application; a composite double-row tapered bearing outer ring oil injection hole drilling mold includes a U-shaped base 2, the top of which is provided with an indexing and limiting component 3; an indexing plate 4, which is rotatably disposed in the opening of the U-shaped base 2, and the outer periphery of the indexing plate 4 is provided with a plurality of radial indexing holes 41, and the indexing and limiting component 3 is connected to one of the indexing holes 41; the end face of the indexing plate 4 is coaxially provided with a mounting plate 5, and the top of the U-shaped base 2 and above the mounting plate 5 is provided with a through hole 211, the central axis of the through hole 211 and the central axis of the indexing hole 41 connected to the indexing and limiting component 3 are located on the same vertical plane.

[0027] In this structural design, the U-shaped base 2 serves as the basic support structure for the mold. Its top surface is equipped with an indexing and limiting component 3, facilitating precise control of the rotation and positioning of the indexing plate 4. The indexing plate 4 has multiple indexing holes 41 spaced apart on its annular surface, allowing for precise equal division as needed. These holes are rotatably positioned within the opening of the U-shaped base 2, facilitating adjustment according to the requirements of the workpiece 1. The mounting plate 5 is coaxially mounted on the end face of the indexing plate 4 to fix the workpiece 1, thereby achieving synchronous rotation and positioning of the workpiece 1 and the indexing plate 4. This improves drilling accuracy and ensures proper control during the drilling process. The stability of workpiece 1 is ensured by the indexing and limiting component 3, which achieves indexing positioning by engaging or disengaging with the indexing hole 41. This limits the rotation angle of the indexing plate 4, allowing it to stop at the preset indexing position for accurate drilling. The through hole 211 is located on the top of the U-shaped base 2 and works with the mounting plate 5 to drill holes in the workpiece 1. The position and size of the through hole 211 are precisely matched with the oil injection hole on the workpiece 1 according to design requirements, ensuring machining accuracy. This solves the problem in related technologies where the use of a universal indexing head to divide the workpiece into equal oil injection holes results in errors in the actual drilling position. In this embodiment, due to the design of the indexing and limiting component 3 and the indexing plate 4, the mold can achieve highly repeatable positioning, ensuring the accuracy of each hole position. The structure of the U-shaped base 2 and the indexing plate 4 is simple and clear, making it easy for operators to understand and use, reducing the probability of operational errors.

[0028] In some preferred embodiments, the U-shaped base 2 includes a vertical base 22 and a top base 21 and a base 23 that are respectively vertically connected to the vertical base. The vertical base 22 is provided with a transverse through groove. The indexing and limiting component 3 and the through hole 211 are both provided on the top base 21. The end face of the indexing plate 4 away from the mounting plate 5 is in close contact with the vertical base 22, and the end face is coaxially provided with a rotating plate 6 through the transverse through groove.

[0029] In this embodiment, the U-shaped base 2 is further subdivided. The top base 21 is located at the top of the vertical base 22 and is provided with an indexing and limiting component 3 and a through hole 211. The base 23 is located at the bottom of the vertical base 22 and provides stable support for the entire mold. A transverse through slot is provided on the vertical base 22. The end face of the indexing plate 4 is coaxially provided with a rotating disk 6, and the rotating disk 6 passes through the transverse through slot, which makes it convenient for the operator to operate the rotating disk 6 to drive the indexing plate 4 to rotate, and can realize the limiting of the indexing plate 4, so that it abuts against the vertical base 22.

[0030] In some preferred embodiments, the indexing limiting assembly 3 includes a bolt 31 and a limiting member; the top seat 21 is provided with a threaded hole, the bolt 31 is rotatably disposed along the length direction of the threaded hole, and the limiting member is disposed at the bottom of the bolt 31 for engaging or disengaging with the indexing hole 41.

[0031] In this embodiment, the bolt 31 can rotate along its length on the top seat 21 through the threaded hole, and a limiting member is located at the bottom of the bolt 31. This design allows the user to easily adjust the position of the bolt 31 according to their needs to achieve the limiting function. The rotational design of the bolt 31 allows the operator to adjust the height of the limiting member, i.e., the contact state with the indexing hole 41, by rotating the bolt 31 in actual operation, thereby achieving precise positioning.

[0032] In some preferred embodiments, the limiting element is a steel ball 32, which is connected to the bottom of the bolt 31 via a compression spring 33; the diameter of the steel ball 32 is greater than the diameter of the indexing hole 41.

[0033] In this embodiment, the steel ball 32, acting as a limiting member, has a large diameter to ensure it can be firmly inserted into the indexing hole 41. When the steel ball 32 is within the indexing hole 41, it effectively restricts the rotation of the mold. The compression spring 33, connected between the steel ball 32 and the bottom of the bolt 31, provides necessary elastic support. When the user adjusts the position of the bolt 31, the compression spring 33 effectively pushes the steel ball 32, ensuring it can smoothly enter and exit the indexing hole 41.

[0034] In some preferred embodiments, the limiting member is a vertical rod; the diameter of the vertical rod is the same as the diameter of the indexing hole 41.

[0035] In this embodiment, this is another option for the limiting component. The diameter of the vertical rod is the same as the diameter of the indexing hole 41, meaning the vertical rod can be fully embedded in the indexing hole 41, thereby achieving a precise limiting function. The vertical rod is typically made of high-strength materials, such as steel or alloys, to ensure that it is not easily worn or deformed during long-term use.

[0036] In some preferred embodiments, the number of indexing holes 41 is eight, and the eight indexing holes 41 are equally spaced along the annular surface of the indexing disk 4.

[0037] This is a specific embodiment, in which eight indexing holes 41 are equally spaced along the annular surface of the indexing plate 4, thus ensuring that the oil injection hole drilling requirement of the workpiece 1 is eight equally spaced holes; it should be noted that there can also be nine, ten, eleven or more indexing holes 41, designed according to actual processing requirements.

[0038] In some preferred embodiments, a sealing element may be detachably provided in the indexing hole 41, and the indexing limiting component 3 may be connected to one of the indexing holes 41 without a sealing element.

[0039] In this embodiment, the indexing plate 4 achieves compatibility, meaning it can be used for multiple purposes. Equipped with sealing components, the indexing plate 4 can selectively open or close multiple indexing holes 41 according to specific processing requirements. This compatibility allows the same indexing plate 4 to adapt to various processing methods and technological requirements, reducing the frequency of equipment replacement. Furthermore, through proper configuration, a single indexing plate 4 can handle various working conditions, improving the resource utilization rate of the equipment.

[0040] In some preferred embodiments, a locking assembly 7 is also included, which includes a screw 71 and a pad 72; the mounting plate 5 includes a first mounting cylinder 51 and a second mounting cylinder 52, the first mounting cylinder 51 being coaxially disposed on the end face of the indexing plate 4 away from the rotating plate 6, and the second mounting cylinder 52 being coaxially disposed on the end face of the first mounting cylinder 51 away from the indexing plate 4, so as to form a space for placing the workpiece 1; the screw 71 is rotatably disposed on the second mounting cylinder 52 so as to hold the workpiece 1 against the indexing plate 4 by means of the pad 72.

[0041] In this embodiment, the workpiece 1 is locked onto the mounting plate 5. Specifically, the pad 72 serves as a support for the screw 71, enhancing the contact force with the workpiece 1 and dispersing pressure to prevent localized damage. The screw 71 securely fixes the workpiece 1 to the indexing plate 4, preventing displacement during processing. The locking assembly 7 ensures the stability of the workpiece 1 during processing, especially during drilling, eliminating errors caused by vibration. The coaxial connection between the first mounting cylinder 51 and the second mounting cylinder 52, as well as with the indexing plate 4, forms a stable support structure, increasing overall rigidity and ensuring accurate positioning of the workpiece 1, thus ensuring precise hole positioning during drilling. It should be noted that the pad 72 can be made of materials with good elasticity and wear resistance, such as polyurethane or rubber, to improve the compressive strength of the workpiece 1 and enhance the friction of the contact surface. The design of the second mounting cylinder 52 can incorporate adaptability, allowing for the selection of mounting cylinders with different diameters and heights to accommodate different specifications of workpiece 1, thus expanding the mold's usability.

[0042] In some preferred embodiments, the end face of the rotating disk 6 away from the indexing disk 4 is flush with the groove of the vertical seat 22 away from the indexing disk 4, and the end face is coaxially provided with a threaded disk 8, and the threaded disk 8 is provided with a baffle assembly, which abuts against the end face and the groove.

[0043] In this embodiment, in order to further strengthen the locking between the mounting plate 5, the indexing plate 4 and the rotating plate 6, a threaded plate 8 is coaxially arranged on the end face of the rotating plate 6 away from the indexing plate 4, and a baffle assembly that abuts against the groove and the end face is provided on the threaded plate 8. The groove at the other end of the transverse through groove abuts against the indexing plate 4, thereby locking the rotating plate 6 in the transverse through groove, thereby indirectly fixing the indexing plate 4 and the fixed plate 5, and improving the overall processing efficiency and accuracy.

[0044] In some preferred embodiments, the baffle assembly includes a thrust bearing 61, a washer 81, and a nut 82; the rotating disk 6 is provided with a thrust bearing 61, and the inner wall of the transverse through groove is provided with an annular groove to form a space to accommodate the thrust bearing 61; the washer 81 is provided on the threaded disk 8 and is in close contact with the thrust bearing 61, and the nut 82 is rotatably provided on the threaded disk 8 to abut against the washer 81.

[0045] In this embodiment, the baffle assembly is further subdivided into a thrust bearing 61, a washer 81, and a nut 82. Combined with the original design of the rotating disk 6 and the threaded disk 8, this optimizes the stability and smoothness of the mold's rotation. The rotating disk 6 is equipped with a thrust bearing 61, which effectively bears and distributes the axial load generated during operation. Its arrangement ensures that the rotating disk 6 remains smooth and stable during operation. An annular groove is provided on the inner wall of the transverse through-slot, allowing the groove to accommodate the thrust bearing 61, providing a compact and efficient structural layout. This design aims to accommodate and protect the thrust bearing 61 while also reducing interference from external objects. The threaded disk 8 is equipped with a retaining washer 81 and a nut 82; these two components improve the overall locking effect, especially in locking the thrust bearing 61 while also locking the rotating disk 6.

[0046] The beneficial effects of this utility model include:

[0047] A composite drilling mold for the oil injection hole of the outer ring of a double-row tapered bearing is proposed. The U-shaped base 2 serves as the basic support structure of the mold, and its top surface is equipped with an indexing and limiting component 3 for precise control of the rotation and positioning of the indexing plate 4. The indexing plate 4 has multiple indexing holes 41 spaced apart on its annular surface, allowing for precise equal division as needed. These holes are rotatably positioned within the opening of the U-shaped base 2, facilitating adjustment according to the requirements of the workpiece 1. A mounting plate 5 is coaxially mounted on the end face of the indexing plate 4 to fix the workpiece 1, thereby achieving synchronous rotation and positioning of the workpiece 1 and the indexing plate 4, improving drilling accuracy, and ensuring... The stability of workpiece 1 during drilling is ensured. The indexing and limiting component 3 achieves indexing positioning by engaging or disengaging with the indexing hole 41, limiting the rotation angle of the indexing plate 4 so that it can stop at the preset indexing position for accurate drilling. The through hole 211 is located on the top of the U-shaped base 2 and works with the mounting plate 5 to drill workpiece 1. The position and size of the through hole 211 precisely match the oil injection hole on workpiece 1 according to design requirements, ensuring machining accuracy. This solves the problem in related technologies where the use of a universal indexing head for dividing workpieces into equal oil injection holes results in errors in the actual drilling position. In this embodiment, due to the design of the indexing and limiting component 3 and the indexing plate 4, the mold can achieve highly repeatable positioning, ensuring the accuracy of each hole position. The structure of the U-shaped base 2 and the indexing plate 4 is simple and clear, easy for operators to understand and use, reducing the probability of operational errors. This solves the problem in related technologies where the use of a universal indexing head for dividing workpieces into equal oil injection holes results in errors in the actual drilling position.

[0048] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0049] It should be noted that in this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0050] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A composite double-row tapered bearing outer ring oil injection hole drilling mold, characterized in that, It includes: U-shaped platform (2), with an indexing limit component (3) on its top; The indexing plate (4) is rotatably disposed in the opening of the U-shaped base (2). The outer periphery of the indexing plate (4) is provided with a plurality of radial indexing holes (41), and the indexing limiting component (3) is connected to one of the indexing holes (41). The end face of the indexing plate (4) is coaxially provided with a mounting plate (5). The top of the U-shaped base (2) and above the mounting plate (5) is provided with a through hole (211). The central axis of the through hole (211) and the central axis of the indexing hole (41) connected to the indexing limiting component (3) are located on the same vertical plane.

2. The composite double-row tapered bearing outer ring oil injection hole drilling mold as described in claim 1, characterized in that: The U-shaped base (2) includes a vertical base (22) and a top base (21) and a base (23) that are vertically connected to the vertical base (22) respectively. The vertical base (22) is provided with a transverse through groove. The indexing limiting component (3) and the perforation (211) are both located on the top seat (21); The end face of the indexing plate (4) away from the mounting plate (5) is in close contact with the vertical seat (22), and the end face is coaxially provided with a rotating plate (6) through the transverse through groove.

3. The composite double-row tapered bearing outer ring oil injection hole drilling mold as described in claim 2, characterized in that: The indexing and limiting assembly (3) includes a bolt (31) and a limiting element; The top seat (21) is provided with a threaded hole, the bolt (31) is rotatably arranged along the length direction of the threaded hole, the limiting member is provided at the bottom of the bolt (31), and is connected to one of the indexing holes (41).

4. The composite double-row tapered bearing outer ring oil injection hole drilling mold as described in claim 3, characterized in that: The limiting component is a steel ball (32), which is connected to the bottom of the bolt (31) via a compression spring (33); The diameter of the steel ball (32) is greater than the diameter of the indexing hole (41).

5. The composite double-row tapered bearing outer ring oil injection hole drilling mold as described in claim 3, characterized in that: The limiting component is a vertical rod; The diameter of the vertical rod is the same as the diameter of the indexing hole (41).

6. The composite double-row tapered bearing outer ring oil injection hole drilling mold as described in claim 1, characterized in that: The number of the indexing holes (41) is eight, and the eight indexing holes (41) are equally spaced along the annular surface of the indexing disk (4).

7. The composite double-row tapered bearing outer ring oil injection hole drilling mold as described in claim 1, characterized in that: A sealing element may be detachably provided in the indexing hole (41), and the indexing limiting component (3) is connected to one of the indexing holes (41) that does not have the sealing element.

8. The composite double-row tapered bearing outer ring oil injection hole drilling mold as described in claim 2, characterized in that: It also includes a locking assembly (7), which includes a screw (71) and a pad (72); The mounting plate (5) includes a first mounting cylinder (51) and a second mounting cylinder (52). The first mounting cylinder (51) is coaxially disposed on the end face of the indexing plate (4) away from the rotating plate (6), and the second mounting cylinder (52) is coaxially disposed on the end face of the first mounting cylinder (51) away from the indexing plate (4) to form a space for placing the workpiece (1). The screw (71) is rotatably mounted on the second mounting cylinder (52) to hold the workpiece (1) against the indexing plate (4) by means of the pad (72).

9. The composite double-row tapered bearing outer ring oil injection hole drilling mold as described in claim 2, characterized in that: The end face of the rotating disk (6) away from the indexing disk (4) is flush with the groove of the vertical seat (22) away from the indexing disk (4), and the end face is coaxially provided with a threaded disk (8). The threaded disk (8) is provided with a baffle assembly, and the baffle assembly abuts against the end face and the groove.

10. The composite double-row tapered bearing outer ring oil injection hole drilling mold as described in claim 9, characterized in that: The baffle assembly includes a thrust bearing (61), a washer (81), and a nut (82); The rotating disk (6) is provided with a thrust bearing (61), and the inner wall of the transverse through groove is provided with an annular groove to form a space to accommodate the thrust bearing (61). The washer (81) is disposed on the threaded disc (8) and is in close contact with the thrust bearing (61). The nut (82) is rotatably disposed on the threaded disc (8) to abut against the washer (81).

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