Hollow strut roller bearing cage and its auxiliary processing tooling

Abstract

The present invention belongs to the technical field of bearing assembly manufacturing, and particularly relates to a cage for a hollow strut roller bearing and an auxiliary processing tooling therefor. The cage includes a first washer and a second washer. A plurality of struts are connected between the first washer and the second washer, and a roller is sleeved on each strut. A plurality of threaded through holes corresponding to the struts are formed in the first washer, and the plurality of struts are threadedly connected to the first washer through the threaded through holes. At least one movable through hole and a plurality of welding through holes corresponding to the struts are formed in the second washer. A rotation stopping groove is formed in the movable through hole, and the movable through hole is inserted and connected with the corresponding strut. The rotation of the strut is restricted by a spring wire in the rotation stopping groove, and the remaining struts are welded to the second washer through the welding through holes. The present invention can disassemble the struts and rollers in the movable through holes for observing and repairing the raceway, which is convenient for the later maintenance of the bearing, avoids damage during disassembly, can improve the service life of the bearing, and reduce the maintenance cost.

Description

Technical Field

[0001] The present invention belongs to the technical field of bearing assembly manufacturing, and particularly relates to a cage for a hollow strut roller bearing and an auxiliary processing tooling therefor. Background Art

[0002] At present, the cage structure of a hollow strut roller is composed of two washers and a number of struts between the two washers. Generally, to ensure the stability of the cage, the struts are connected to the two washers by welding or one end of the strut is threadedly connected to the washer and the other end of the strut is welded to the washer. The assembled cage cannot disassemble the rollers, and once disassembled, it will damage the cage, which is not conducive to the inspection and maintenance of the raceway after the bearing is assembled, and affects the service life of the bearing. Summary of the Invention

[0003] According to the defects existing in the above-mentioned prior art, the object of the present invention is to provide a cage for a hollow strut roller bearing and an auxiliary processing tooling therefor, which can provide a cage structure that is convenient for disassembling the rollers and struts on the basis of ensuring the stability of the cage.

[0004] To achieve the above object, the technical solution adopted by the present invention is: a cage for a hollow strut roller bearing, including a first washer and a second washer, a number of struts are connected between the first washer and the second washer, and a roller is sleeved on each strut; a number of threaded through holes corresponding to the struts are formed on the first washer, and the number of struts are threadedly connected to the first washer through the threaded through holes, at least one movable through hole and a number of welding through holes corresponding to the struts are formed on the second washer, a rotation stopping groove is formed in the movable through hole, the movable through hole is inserted and connected with the corresponding strut, and the rotation of the strut is restricted by a spring wire in the rotation stopping groove, and the remaining struts are welded to the second washer through the welding through holes.

[0005] Further, the rotation stopping groove includes two inclined holes inclined to the axis of the movable through hole, the two inclined holes are symmetrically arranged and arranged to form an inverted V-shaped structure, the spring wire assembled in the rotation stopping groove is a V-shaped spring wire, and the V-shaped spring wire contacts the strut and restricts the rotation of the strut.

[0006] Further, the strut in the movable through hole is provided with a flat end, and the spring wire abuts against the side plane of the flat end to restrict the rotation of the strut.

[0007] Further, the movable through holes are arranged as two adjacent ones.

[0008] Auxiliary processing tooling for the cage of a hollow cylindrical roller bearing, including V-shaped spring wire processing tooling for forming V-shaped spring wire. The V-shaped spring wire processing tooling includes a base and a forming punch that are separately arranged. A positioning groove with a flat surface for placing a straight spring wire is provided on the base. A V-shaped groove for forming V-shaped spring wire is provided on the positioning groove. A V-shaped convex block matching the V-shaped groove is provided on the forming punch. The V-shaped convex block of the forming punch acts on the straight spring wire in the positioning groove, pressing the straight spring wire in the positioning groove into the V-shaped groove to form V-shaped spring wire.

[0009] Further, guide plates adapted to the forming punch are provided on both sides of the base, and the forming punch performs a pressing-down action along the guide plates on both sides.

[0010] Further, the V-shaped convex block is connected to a pressure-bearing block of the forming punch. A connecting handle for easy operation is provided on the pressure-bearing block, and the axis of the connecting handle coincides with the axis of the V-shaped convex block.

[0011] Further, the V-shaped groove is located at the center position of the positioning groove.

[0012] Further, a plurality of straight spring wires are arranged and placed in the positioning groove, and the plurality of straight spring wires are simultaneously formed into V-shaped spring wire by one action of the forming punch.

[0013] Further, it also includes a cutting and fixing device for forming a straight spring wire with a fixed length. The cutting and fixing device includes a reference plate and a limiting block and a locking block provided on the reference plate. A channel for the spring wire to pass through is formed inside the locking block, and a locking screw connected to the channel is provided on the locking block.

[0014] Further, the distance between the limiting block and the locking block is consistent with the length of the predetermined straight spring wire.

[0015] Auxiliary processing tooling for the cage of a hollow cylindrical roller bearing, including auxiliary inclined hole drilling tooling for processing the inclined holes of the anti-rotation grooves. The auxiliary inclined hole drilling tooling includes a positioning disk that fits the inner diameter of the second washer of the cage and a fixing block that presses against the end face of the second washer of the cage. The inner surface of the second washer of the cage is mounted on the positioning disk. The fixing block is connected to the positioning disk and presses against the end face of the second washer of the cage. A through guiding hole for guiding the drill bit is provided inside the fixing block. The guiding hole is inclined inside the fixing block. When the fixing block is fixedly connected, the axis of the guiding hole coincides with the axis of the inclined hole to be processed. The positioning disk is inclined so that the axis of the guiding hole remains vertical and matches the position of the drill bit.

[0016] Further, the fixing block includes a connecting portion and a pressing portion. Matching connecting holes are provided on the connecting portion and the positioning disk, and the fixing block is connected to the positioning disk through the connecting holes by connecting bolts.

[0017] Further, the pressing portion presses on the end face of the second washer of the cage, and a guiding hole is formed in the pressing portion.

[0018] Further, the surfaces of the pressing portion where the two ends of the guiding hole are located are perpendicular to the axis of the guiding hole; the pressing portion is a hexagonal prism structure, and the side surface of the pressing portion includes two corresponding parallel guiding surfaces, two parallel pressing surfaces and two parallel transition surfaces. A through guiding hole is formed between the two guiding surfaces, the axis of the guiding hole is perpendicular to the two guiding surfaces, and the two parallel pressing surfaces are used for fitting and pressing against the end face of the second washer of the cage.

[0019] Further, the connecting portion and the pressing portion are of an integral structure.

[0020] Further, the connecting hole on the connecting portion is an oblong hole, and the position of the fixing block is adjusted through the oblong hole.

[0021] Further, the positioning disk includes a base and a positioning table provided on the base and adapted to the inner diameter of the second washer of the cage. The second washer of the cage is placed on the base and centered by the positioning table.

[0022] Further, a pin hole is provided on the base, and a positioning pin is installed in the pin hole through the welding through hole of the second washer of the cage to limit the circumferential position of the second washer of the cage.

[0023] Further, the height of the positioning table is the same as the axial height of the second washer of the cage.

[0024] Further, the positioning disk is installed on a workbench capable of adjusting the inclination angle.

[0025] The beneficial effects of the present invention are as follows: The cage structure of the present invention can disassemble the struts and rollers in the movable through holes to form a window for observing and maintaining the raceway, which is convenient for the later maintenance of the bearing, avoids damage to the bearing during disassembly, can effectively improve the service life of the bearing, and reduces the maintenance cost of the bearing. Description of the Drawings

[0026] Figure 1 is a schematic structural diagram of the second washer of the cage of the hollow strut roller bearing of the present invention;

[0027] Figure 2 is Figure 1 the enlarged detail view at B in

[0028] Figure 3 is Figure 2Oblique hole cross-sectional view of the stop transfer groove;

[0029] Figure 4 It is a schematic structural diagram of a V-shaped spring wire;

[0030] Figure 5 It is a schematic diagram of the tooling state of the V-shaped spring wire processing tooling before the V-shaped spring wire is formed;

[0031] Figure 6 It is a schematic diagram of the tooling state of the V-shaped spring wire processing tooling after the V-shaped spring wire is formed;

[0032] Figure 7 It is a schematic structural diagram of the cutting and fixing device;

[0033] Figure 8 It is for Figure 7 top view;

[0034] Figure 9 It is a schematic diagram of the auxiliary oblique hole drilling tooling;

[0035] Figure 10 It is a schematic diagram of fixing the second washer workpiece of the cage;

[0036] Figure 11 It is a schematic structural diagram of the positioning plate;

[0037] Figure 12 It is a schematic diagram of the fixed block structure Figure One ;

[0038] Figure 13 It is a schematic diagram of the fixed block structure Figure Two ;

[0039] In the figure: 1. Base, 2. Forming punch, 3. Straight spring wire, 4. Positioning groove, 5. V-shaped groove, 6. V-shaped convex block, 7. Guide plate, 8. Bearing block, 9. Connecting handle, 10. V-shaped spring wire, 11. Reference plate, 12. Limit block, 13. Locking block, 14. Uncut spring wire, 15. Locking screw, 16. Second washer of the cage, 17. Movable through hole, 18. Welding through hole, 19. Oblique hole, 20. Positioning plate, 21. Fixed block, 22. Guide hole, 23. Connecting part, 24. Pressing part, 25. Fixed block connection hole, 26. Positioning plate connection hole, 27. Guide surface, 28. Pressing surface, 29. Transition surface, 30. Base, 31. Positioning table, 32. Pin hole, 33. Drill bit. Specific implementation method

[0040] To make the above-mentioned objects, features, and advantages of the present invention more readily apparent, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings. The following description sets forth numerous specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art may make similar modifications without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0041] See attached Figure 1-4 The hollow pillar roller bearing retainer includes a first washer and a second washer 16, and a number of pillars are connected between the first washer and the second washer, and each pillar is provided with a roller; the first washer is provided with a number of threaded through holes corresponding to the pillars, and the several pillars are threadedly connected to the first washer through the threaded through holes, and the second washer is provided with two adjacent movable through holes 17 corresponding to the pillars and a number of welding through holes 18, and a stop groove is provided in the movable through hole, and the movable through hole 17 is connected with the corresponding pillar by plugging, and the rotation of the pillar is limited by the spring wire in the stop groove, and the remaining pillars are welded to the second washer through welding through holes.

[0042] Furthermore, the anti-rotation groove includes two inclined holes 19 inclined to the axis of the movable through hole. The two inclined holes are symmetrically arranged and arranged to form an inverted V-shaped structure. The spring wire assembled in the anti-rotation groove is a V-shaped spring wire 10. The V-shaped spring wire 10 contacts the pillar and limits the rotation of the pillar.

[0043] Furthermore, the pillar in the movable through hole is provided with a flat end, and the V-shaped spring wire abuts against the side plane of the flat end to limit the rotation of the pillar.

[0044] Based on the above technical solution, the pillar in the movable through hole is the inspection pillar. Since the two ends of the V-shaped spring wire are respectively located in the two inclined holes, the V-shaped spring wire itself cannot rotate. The V-shaped spring wire rests on the side plane of the flat end, thereby limiting the rotation of the inspection pillar. The inspection pillar cannot be rotated out of the threaded through hole of the first washer, thereby ensuring the stability of the inspection pillar connected in the movable through hole. The structure of the inspection pillar is the same as that of other pillars, and no distinction can be made during assembly. When disassembling the inspection pillar, the V-shaped spring wire can be pulled out, and then the inspection pillar can be unscrewed from the threaded through hole of the first washer. The inspection pillar and the roller are disassembled together, the bearing ring is rotated, and the raceway condition is observed from the disassembly window.

[0045] In order to assemble the V-shaped spring wire, the present invention provides an auxiliary processing tool for the hollow pillar roller bearing retainer, including a V-shaped spring wire processing tool for forming the V-shaped spring wire and an auxiliary inclined hole drilling tool for processing the inclined hole of the rotation-stop groove.

[0046] See attached Figure 5-6, a processing tool for V-shaped spring wires, including a base 1 and a forming punch 2 that are separately arranged. A positioning groove 4 with a flat surface for placing a straight spring wire 3 is provided on the base 1. A V-shaped groove 5 for forming a V-shaped spring wire is provided on the positioning groove 4. A V-shaped protrusion 6 matching the V-shaped groove 5 is provided on the forming punch 2. The V-shaped protrusion 6 of the forming punch acts on the straight spring wire 3 in the positioning groove 4, pressing the straight spring wire in the positioning groove 4 into the V-shaped groove 5 to form a V-shaped spring wire 10.

[0047] Based on the above technical solution, it should be noted that the spring wire is a metal wire, and its spring performance is mainly reflected in that the two free ends can expand away from each other and compress towards each other under the action of an external force, and it can play a better constraining role on the welded end of the support column.

[0048] Furthermore, guide plates 7 adapted to the forming punch 2 are provided on both sides of the base 1, and the pressure-bearing block 8 of the forming punch 2 presses down along the guide plates 7 on both sides. The guide plates 7 can ensure that the forming punch 2 always aligns with the position of the V-shaped groove 5 of the base 1 during stamping to prevent deviation and the appearance of defective products.

[0049] Furthermore, the V-shaped protrusion 6 is connected to the pressure-bearing block 8 of the forming punch. A connecting handle 9 for easy operation is provided on the pressure-bearing block 8, and the axis of the connecting handle 9 coincides with the axis of the V-shaped protrusion 6. Pressure can be provided for the spring wire by hitting the forming punch 2 with a hammer. The pressure-bearing block 8 functions to balance the acting force, and the pressure-bearing block 8 and the V-shaped protrusion 6 are integrally formed.

[0050] Furthermore, the V-shaped groove 5 is located at the center position of the positioning groove 4. This ensures that the two sides of the formed V-shaped spring wire have uniform lengths.

[0051] Furthermore, a number of straight spring wires 3 extending linearly are arranged in the positioning groove 4, and a number of straight spring wires are simultaneously formed into V-shaped spring wires by one action of the forming punch. The positioning groove 4 functions to constrain the position of the straight spring wire 3, ensuring that the V-shaped protrusion 6 can press down at the middle position of the straight spring wire 3.

[0052] Furthermore, the processing tool for V-shaped spring wires further includes a cutting and fixing device. See the appendix Figure 7-8 , the cutting and fixing device includes a reference plate 11 and a limiting block 12 and a locking block 13 provided on the reference plate. A channel for the spring wire 14 to pass through is formed inside the locking block 13, and a locking screw 15 connected to the channel is provided on the locking block 13.

[0053] Further, the distance between the limiting block 12 and the locking block 13 is consistent with the length of the spring wire 3 extending linearly as predetermined. According to the length requirement of the spring wire, the spring wire is fixed by a cutting and fixing device and cut by a cutting tool.

[0054] See the appendix Figure 9-13 , an auxiliary inclined hole drilling tooling, including a positioning disk 20 that fits the inner diameter of the second cage washer 16 and a fixing block 21 that presses on the end face of the second cage washer. The inner surface of the second cage washer 16 is mounted on the positioning disk 20. The fixing block 21 is connected to the positioning disk 20 and presses on the end face of the second cage washer 16. A through guiding hole 22 for guiding a drill bit 33 is provided in the fixing block 21. The guiding hole 22 is inclined in the fixing block 21. When the fixing block 21 is connected and fixed, the axis of the guiding hole 22 coincides with the axis of the inclined hole 19 of the second cage washer to be machined. The positioning disk 20 is inclined so that the axis of the guiding hole 22 remains vertical and matches the position of the drill bit 33.

[0055] Further, the fixing block 21 includes an integrated connecting portion 23 and a pressing portion 24. Matching connecting holes 25 and 26 are provided on the connecting portion 23 and the positioning disk. A connecting bolt connects the fixing block 21 to the positioning disk 20 through the connecting holes. The pressing portion 24 presses on the end face of the second cage washer 16, and the guiding hole 22 is formed in the pressing portion 24. The pressing portion 24 is a hexagonal prism structure. The side surface of the pressing portion 24 includes two corresponding parallel guiding surfaces 27, two parallel pressing surfaces 28, and two parallel transition surfaces 29. A through guiding hole 22 is formed between the two guiding surfaces 27. The axis of the guiding hole 22 is perpendicular to the two guiding surfaces 27. The two parallel pressing surfaces 28 are used to fit and press tightly against the end face of the second cage washer 16. The fixing block connecting hole 25 is formed between the two parallel pressing surfaces 28.

[0056] Based on the above technical solution, it should be noted that the connecting portion 23 is a cuboid structure. The hexagonal prism structure of the pressing portion is actually formed by cutting off two triangular prisms at the diagonal positions of the cuboid that continues with the connecting portion, as Figure 12 and Figure 13As shown, the two cutting bevels formed after cutting are the guide surfaces 27 of the holding portion. The holding surface 28 and the transition surface 29 are perpendicular planes to the original rectangular parallelepiped surface. The purpose of cutting is to reduce the thickness, reduce the length of the guide hole 22, and reduce the influence of the guide hole 22 on the length of the drill bit. At the same time, because the angle of the drill bit cannot be adjusted and can only act in the vertical direction, the guide surface 27 is made into a plane perpendicular to the guide hole 22, that is, the guide surface 27 is perpendicular to the drill bit 33, which facilitates the adjustment of the position of the entire workpiece and prevents the guide hole 22 from deflecting. At the same time, the holding portion 24 itself can play a role in holding the workpiece, which can position the workpiece and make it easier for the drill bit to work.

[0057] Furthermore, the connection hole 25 on the fixing block connection portion 23 is a long waist hole, and the position of the fixing block 21 is adjusted through the long waist hole.

[0058] Furthermore, the positioning plate 20 includes a base 30 and a positioning platform 31 disposed on the base 30 that mates with the inner diameter of the second retainer washer 16. The second retainer washer 16 is placed on the base 30 and centered by the positioning platform 31. The positioning plate connection hole 26 is provided on the positioning platform 31, and the fixing block 21 is connected to the connection hole 26 on the positioning platform via an elongated waist hole. The base 30 is provided with two pin holes 32. The positioning pins pass through the welding holes 18 of the second retainer washer 16 and are installed in the pin holes to limit the circumferential position of the second retainer washer 16.

[0059] Furthermore, the height of the positioning platform 31 is the same as the axial height of the second retainer washer 16. The two parallel pressing surfaces 28 and the upper and lower surfaces of the connecting portion 23 are located on the same plane.

[0060] Furthermore, the positioning plate 20 is mounted on a workbench capable of adjusting the tilt angle. The workbench capable of adjusting the tilt angle can be any workbench in the prior art.

[0061] The fixing block 21 of the present invention has two pressing surfaces 28. When the workpiece is pressed by different pressing surfaces, the directions of the guiding holes 22 in the fixing block are opposite. Therefore, two inclined holes 19 of the V-shaped groove can be machined through one fixing block 21, and the consistency of the lengths and inclination angles of the two inclined holes 19 can be ensured. The specific machining process is as follows: Place the cage second washer 16 workpiece on the positioning disk 20 and limit it by two positioning pins. Taking the moving through-hole 17 of the cage second washer as the reference, connect the fixing block 21 to the positioning disk 20, so that the first pressing surface of the fixing block 21 presses on the surface of the cage second washer 16. Adjust the inclination angle of the positioning disk 20 to make the guiding surface 27 horizontal. Adjust the position of the drill bit 33 to align with the guiding hole 22, start the drill bit 33 to drill, and after the drilling is completed, the drill bit exits to form the first inclined hole 19. Rotate the cage second washer workpiece by 180° and limit it by the positioning pins. Reverse the direction of the fixing block 21 so that the second pressing surface of the fixing block 21 presses on the surface of the cage second washer 16. According to the orifice of the first inclined hole, adjust the position of the drill bit to align with the guiding hole 22, start the drill bit to drill, and after the drilling is completed, the drill bit exits to form the second inclined hole 19. The two inclined holes are arranged in a V shape.

[0062] Working principle: When machining a cage with inclined holes in this example, during the conventional drilling of the inclined holes, the drill bit will slide away from the center position of the hole. With this design, the workpiece can be pressed and, taking this surface as the reference surface, the drill bit can be guided to perform inclined hole machining. Principle: "After adjusting the angle of the workpiece itself, the drill bit is perpendicular to the drilling position at 90°, and the drill bit can be guided to perform drilling machining in a relatively conventional manner.

[0063] It should be noted that the parts not detailed in the present invention are prior art.

[0064] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention.

[0065] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0066] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0067] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0068] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0069] The above examples are merely preferred embodiments of the present invention. Obviously, the present invention is not limited to the above examples, and many variations are possible. All variations that can be directly derived or imagined by a person skilled in the art from the disclosure of the present invention should be considered to be within the scope of protection of the present invention.

Claims

1. Cage for a hollow cylindrical roller bearing, characterized in that: It includes a first washer and a second washer. A number of struts are connected between the first washer and the second washer, and a roller is sleeved on each strut. A number of threaded through holes corresponding to the struts are formed in the first washer, and the number of struts are threadedly connected to the first washer through the threaded through holes. At least one movable through hole and a number of welding through holes corresponding to the struts are formed in the second washer. A rotation prevention groove is formed in the movable through hole, and the movable through hole is inserted and connected with the corresponding strut. The rotation of the strut is restricted by a spring wire in the rotation prevention groove, and the remaining struts are welded to the second washer through the welding through holes. The rotation prevention groove includes two inclined holes inclined to the axis of the movable through hole. The two inclined holes are symmetrically arranged and arranged to form an inverted V-shaped structure. The spring wire assembled in the rotation prevention groove is a V-shaped spring wire, and the V-shaped spring wire contacts the strut and restricts the rotation of the strut.

2. The cage of the hollow cylindrical roller bearing according to claim 1, characterized in that: A flat end is provided on the strut in the movable through hole, and the spring wire abuts against the side plane of the flat end to restrict the rotation of the strut.

3. The cage of the hollow cylindrical roller bearing according to claim 1, characterized in that: The two adjacent movable through holes are provided.

4. The auxiliary processing tooling for the cage of a hollow cylindrical roller bearing according to any one of claims 1-3, characterized in that: It includes a V-shaped spring wire processing tool for forming a V-shaped spring wire. The V-shaped spring wire processing tool includes a separately arranged base and a forming punch. A positioning groove arranged in a plane for placing a straight spring wire is provided on the base. A V-shaped groove for forming a V-shaped spring wire is provided on the positioning groove. A V-shaped protrusion matching the V-shaped groove is provided on the forming punch. The V-shaped protrusion of the forming punch acts on the straight spring wire in the positioning groove to press the straight spring wire in the positioning groove into the V-shaped groove to form a V-shaped spring wire.

5. The auxiliary processing tooling for the cage of the hollow cylindrical roller bearing according to claim 4, characterized in that: Guide plates adapted to the forming punch are provided on both sides of the base, and the forming punch performs a pressing-down action along the guide plates on both sides. The V-shaped protrusion is connected to a bearing block of the forming punch. A connecting handle convenient for operation is provided on the bearing block, and the axis of the connecting handle coincides with the axis of the V-shaped protrusion. The V-shaped groove is located at the center position of the positioning groove. A number of straight spring wires are arranged and placed in the positioning groove, and a number of straight spring wires are simultaneously formed into V-shaped spring wires by one action of the forming punch.

6. The auxiliary processing tooling for the cage of the hollow cylindrical roller bearing according to claim 4, characterized in that: It also includes a cutting and fixing device for forming a straight spring wire with a fixed length. The cutting and fixing device includes a reference plate and a limiting block and a locking block arranged on the reference plate. A channel for the spring wire to pass through is formed inside the locking block. A locking screw connected to the channel is provided on the locking block. The distance between the limiting block and the locking block is consistent with the length of the predetermined straight spring wire.

7. The auxiliary processing tooling for the cage of the hollow cylindrical roller bearing according to any one of claims 1-3, characterized in that: It includes an auxiliary inclined hole drilling tool for processing the inclined holes of the rotation prevention groove. The auxiliary inclined hole drilling tool includes a positioning disk matched with the inner diameter of the second washer of the cage and a fixing block pressed on the end face of the second washer of the cage. The inner surface of the second washer of the cage is clamped on the positioning disk. The fixing block is connected to the positioning disk and pressed on the end face of the second washer of the cage. A through guiding hole for guiding a drill bit is provided inside the fixing block. The guiding hole is inclinedly arranged inside the fixing block. When the fixing block is fixedly connected, the axis of the guiding hole coincides with the axis of the inclined hole to be processed. The positioning disk is inclinedly arranged so that the axis of the guiding hole remains in a vertical state and is matched with the position of the drill bit.

8. The auxiliary processing tooling for the cage of the hollow cylindrical roller bearing according to claim 7, characterized in that: The fixed block includes a connecting portion and a pressing portion. Matching connecting holes are provided on the connecting portion and the positioning disk, and the fixed block is connected to the positioning disk through the connecting holes by connecting bolts; the pressing portion presses on the end face of the second washer of the cage; a guiding hole is formed in the pressing portion; the surfaces of the pressing portion where the two ends of the guiding hole are located are perpendicular to the axis of the guiding hole; the pressing portion is a hexagonal prism structure, and the side surface of the pressing portion includes two corresponding parallel guiding surfaces, two parallel pressing surfaces and two parallel transition surfaces. A through guiding hole is formed between the two guiding surfaces, and the axis of the guiding hole is perpendicular to the two guiding surfaces. The two parallel pressing surfaces are used to fit and press against the end face of the second washer of the cage; the connecting portion and the pressing portion are an integral structure; the connecting hole on the connecting portion is an oblong hole, and the position of the fixed block is adjusted through the oblong hole.

9. The auxiliary processing tooling for the cage of the hollow cylindrical roller bearing according to claim 7, characterized in that: The positioning disk includes a base and a positioning table provided on the base and adapted to the inner diameter of the second washer of the cage. The second washer of the cage is placed on the base and centered by the positioning table; a pin hole is provided on the base, and a positioning pin is installed in the pin hole through the welding through hole of the second washer of the cage to limit the circumferential position of the second washer of the cage; the height of the positioning table is the same as the axial height of the second washer of the cage; the positioning disk is installed on a workbench whose tilt angle can be adjusted.

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