A device and method for machining figure-eight oil grooves on metal bushings

Abstract

This invention discloses a device and method for machining figure-eight oil grooves on metal bushings, including a lathe, a cutter, and a three-jaw chuck. In this application, the three-jaw chuck drives a drive wheel to rotate synchronously through the cooperation of a insertion rod and a fixed ring. The drive wheel links with a driven wheel, which in turn drives a push plate to perform a horizontal reciprocating motion within a corresponding range via a linkage rod. The push plate, in turn, links with the cutter via a mounting strip, thus initiating the machining of the figure-eight oil groove. During this process, a servo motor drives a transmission rod to rotate for a specified period. The pull rod, constrained by a bottom protrusion and a sliding groove, drives the mounting strip to perform a longitudinal displacement of a specified distance. The cooperation between the transverse groove and the pull rod, as well as the sliding cooperation between the inner rod and the mounting strip, ensures stable horizontal reciprocating motion of the mounting strip while allowing adjustment of the longitudinal position of the mounting strip and the cutter. This achieves the machining of a figure-eight oil groove to a specified depth and ensures the linkage between the metal bushing and the cutter's movement.

Description

Technical Field

[0001] This invention relates to the field of metal bushing processing technology, and in particular to a device and method for processing figure-eight oil grooves in metal bushings. Background Technology

[0002] Figure-eight oil groove machining refers to machining outward spiral or oblique oil grooves in a figure-eight shape on the inner surface of a metal bushing, which is used to improve the distribution of lubricating oil between the shaft and the bushing.

[0003] Chinese Patent Publication No. CN115971809A, published on April 18, 2023, discloses a method for machining an 8-shaped oil groove in a metal bushing and a grooving tool, including the following steps: cutting into sections; rough machining the inner and outer diameters of the first surface of the metal bushing blank; rough machining the inner and outer diameters of the second surface of the metal bushing blank; machining the 8-shaped oil groove and removing burrs; the grooving tool changing direction along an arc-shaped trajectory for machining; quenching; finishing the quenched metal bushing blank; finishing the outer diameter of the metal bushing blank, rust prevention, and packaging.

[0004] Existing methods for machining figure-eight oil grooves on metal bushings mostly involve fixing the metal bushing with a three-jaw chuck. While the three-jaw chuck rotates the metal bushing, a telescopic component drives the cutter to reciprocate horizontally, thus machining the figure-eight oil groove. However, in practice, the linkage between the telescopic component and the three-jaw chuck is poor, and the machining depth of the oil groove cannot be adjusted. Therefore, there is an urgent need to propose a corresponding device and method for machining figure-eight oil grooves on metal bushings to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a device and method for machining figure-eight oil grooves in metal bushings in order to solve the above-mentioned problems.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A device for machining figure-eight oil grooves on metal bushings includes a lathe, a cutting tool, and a three-jaw chuck. The top of the horizontal end of the lathe integrates a moving table and a translation component for adjusting the horizontal position of the moving table. The moving table is fixedly connected to a side seat via a support base. A driven wheel and a drive wheel are rotatably connected to the top of the support base and the side of the side seat, respectively. The drive wheel and the driven wheel are meshed together. The drive wheel is driven by the three-jaw chuck. An installation strip is inserted between the side seat and the support base through a wide slot. A pushing component for pushing the installation strip to reciprocate horizontally is integrated between the outer side of the support base and the driven wheel. A push-pull component for pushing and pulling the installation strip longitudinally is also integrated on the outer side of the support base.

[0008] Preferably, the outer wall of the horizontal end of the drive wheel is fixedly connected to a plug rod by a fixing ring, and the three-jaw chuck has a through hole that matches the plug rod.

[0009] Preferably, a fixing sleeve that is fixedly connected to a three-jaw chuck is integrated on the outer side of the perforation, and a locking rod is screwed onto the inner surface of the fixing sleeve.

[0010] Preferably, the translation component includes a bottom rail fixedly connected to the top of the horizontal end of the lathe, the inner surface of the moving table is slidably connected to the outer surface of the horizontal end of the bottom rail, and a positioning rod is screwed onto the outer surface of the moving table, with the open end of the positioning rod abutting against the outer surface of the bottom rail.

[0011] Preferably, the pushing assembly includes a push plate that drives and cooperates with the driven wheel, and an inner rod that slides and cooperates with the mounting strip is fixedly connected to the inner wall of the push plate.

[0012] Preferably, both the push plate and the top of the driven wheel are rotatably connected to a retaining sleeve, and a linkage rod is fixedly connected between the two sets of retaining sleeves.

[0013] Preferably, the push-pull assembly includes an outer frame fixedly connected to a support base, a servo motor fixedly connected to the outer wall of the outer frame, a transmission rod fixedly connected to the output end of the servo motor, a pull rod screwed onto the outer wall of the transmission rod, a horizontal groove through which the mounting strip fits the pull rod, a protrusion fixedly connected to the bottom of the pull rod, and the protrusion being slidably connected to the inner wall of the bottom of the outer frame via a sliding groove.

[0014] Preferably, it includes the following steps:

[0015] S1. Fix the metal bushing with a three-jaw chuck, and push the moving stage to insert the insertion rod into the through hole on the three-jaw chuck, with the cutter inside the metal bushing.

[0016] S2. The motor on the lathe drives the three-jaw chuck and the metal bushing to rotate. The three-jaw chuck drives the drive wheel to rotate synchronously through the cooperation of the insertion rod and the fixed ring. The drive wheel is linked to the driven wheel. The driven wheel drives the push plate to perform horizontal reciprocating motion within the corresponding range through the linkage rod. The push plate is linked to the cutter through the mounting strip.

[0017] S3. The servo motor drives the transmission rod to rotate for a specified period. The pull rod is constrained by the bottom protrusion and the slide groove. The pull rod drives the mounting strip to make a specified longitudinal displacement, thus completing the processing of the figure-eight oil groove.

[0018] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0019] 1. In this application, the metal bushing is fixed by a three-jaw chuck. The moving table is pushed so that the insert rod is inserted into the through hole on the three-jaw chuck. The cutter is inside the metal bushing. The motor on the lathe drives the three-jaw chuck and the metal bushing to rotate. The three-jaw chuck drives the drive wheel to rotate synchronously through the cooperation of the insert rod and the fixed ring. The drive wheel is linked to the driven wheel. The driven wheel drives the push plate to perform horizontal reciprocating motion within a corresponding range through the linkage rod. The push plate is linked to the cutter through the mounting strip, thus starting the processing of the figure-eight oil groove. During this process, the servo motor drives the transmission rod to rotate for a specified period. The pull rod is constrained by the bottom protrusion and the slide groove. The pull rod drives the mounting strip to perform a specified longitudinal displacement. The cooperation between the transverse groove and the pull rod, as well as the sliding cooperation between the inner rod and the mounting strip, ensures the stable horizontal reciprocating motion of the mounting strip. At the same time, the longitudinal position of the mounting strip and the cutter can be adjusted to achieve the processing of the figure-eight oil groove to a specified depth, and ensures the linkage between the movement of the metal bushing and the cutter.

[0020] 2. In this application, the perforation is horizontally penetrating on the three-jaw chuck, so the perforation has a certain depth. According to the scale on the bottom rail, the moving stage is pushed so that the insertion rod engages with the corresponding position of the perforation. At this time, the cutter corresponds to the corresponding position inside the metal bushing. The locking rod is rotated to screw it into the inner surface wall of the fixed sleeve. The insertion rod is fixed to the fixed sleeve by contacting and rubbing the open end of the locking rod with the outer surface wall of the insertion rod. This further improves the stability of the linkage between the three-jaw chuck and the insertion rod, and can also adjust the horizontal position of the figure-eight oil groove inside the bushing according to the processing requirements. Attached Figure Description

[0021] Figure 1 A schematic diagram of the overall structure provided according to an embodiment of the present invention is shown;

[0022] Figure 2 A schematic diagram of a fixing sleeve structure provided according to an embodiment of the present invention is shown;

[0023] Figure 3 A schematic diagram of a support structure provided according to an embodiment of the present invention is shown;

[0024] Figure 4 A schematic diagram of the external frame structure provided according to an embodiment of the present invention is shown;

[0025] Figure 5 A schematic diagram of a transmission rod structure provided according to an embodiment of the present invention is shown.

[0026] Legend:

[0027] 1. Lathe; 2. Bottom rail; 3. Moving table; 4. Positioning rod; 5. Support base; 6. Drive wheel; 7. Fixing ring; 8. Insert rod; 9. Mounting strip; 10. Cutting tool; 11. Driven wheel; 12. Linkage rod; 13. Push plate; 14. Three-jaw chuck; 15. Through hole; 16. Fixing sleeve; 17. Inner rod; 18. Horizontal groove; 19. Tie rod; 20. Outer frame; 21. Transmission rod; 22. Servo motor; 23. Side seat. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] Please see Figures 1-4 The present invention provides a technical solution:

[0030] A metal bushing figure-eight oil groove processing device includes a lathe 1, a cutter 10 and a three-jaw chuck 14. The top of the horizontal end of the lathe 1 is integrated with a moving table 3 and a translation component for adjusting the horizontal position of the moving table 3. The moving table 3 is fixedly connected to a side seat 23 via a support seat 5. The top of the support seat 5 and the side of the side seat 23 are respectively rotatably connected with a driven wheel 11 and a drive wheel 6. The drive wheel 6 and the driven wheel 11 are meshed and connected. The drive wheel 6 is driven by the three-jaw chuck 14. An installation strip 9 is inserted between the side seat 23 and the support seat 5 through a wide slot. A push component for pushing the installation strip 9 to reciprocate horizontally is integrated between the outer side of the support seat 5 and the driven wheel 11. A push-pull component for pushing and pulling the installation strip 9 longitudinally is also integrated on the outer side of the support seat 5.

[0031] A method for machining an 8-shaped oil groove on a metal bushing includes the following steps:

[0032] S1. Fix the metal bushing with the three-jaw chuck 14, and push the moving table 3 so that the insertion rod 8 is inserted into the through hole 15 on the three-jaw chuck 14, and the cutter 10 is inside the metal bushing.

[0033] S2. The motor on the lathe 1 drives the three-jaw chuck 14 and the metal bushing to rotate. The three-jaw chuck 14 drives the drive wheel 6 to rotate synchronously through the cooperation of the insert rod 8 and the fixed ring 7. The drive wheel 6 is linked to the driven wheel 11. The driven wheel 11 drives the push plate 13 to perform horizontal reciprocating motion within the corresponding range through the linkage rod 12. The push plate 13 is linked to the cutter 10 through the mounting strip 9.

[0034] S3. Servo motor 22 drives transmission rod 21 to rotate for a specified period. Pull rod 19 is constrained by the bottom protrusion and slide groove. Pull rod 19 drives mounting strip 9 to make a specified longitudinal displacement, thus completing the processing of figure-eight oil groove.

[0035] The metal bushing is fixed by the three-jaw chuck 14. The moving table 3 is pushed so that the insertion rod 8 is inserted into the through hole 15 on the three-jaw chuck 14. The cutter 10 is inside the metal bushing. The motor on the lathe 1 drives the three-jaw chuck 14 and the metal bushing to rotate. The three-jaw chuck 14 drives the drive wheel 6 to rotate synchronously through the cooperation of the insertion rod 8 and the fixing ring 7. The drive wheel 6 is linked to the driven wheel 11. The driven wheel 11 drives the push plate 13 to perform horizontal reciprocating motion within a corresponding range through the linkage rod 12. The push plate 13 is then linked to the cutter 10 through the mounting strip 9. This is how the process of step 8 begins. In the processing of the character-shaped oil groove, the servo motor 22 drives the transmission rod 21 to rotate for a specified period. The pull rod 19 is constrained by the bottom protrusion and the slide groove. The pull rod 19 drives the mounting strip 9 to move longitudinally for a specified distance. The cooperation between the horizontal groove 18 and the pull rod 19, as well as the sliding cooperation between the inner rod 17 and the mounting strip 9, ensures the stable horizontal reciprocating motion of the mounting strip 9. At the same time, the longitudinal position of the mounting strip 9 and the cutter 10 can be adjusted to achieve the processing of the character-shaped oil groove to a specified depth, and ensures the linkage between the metal bushing and the cutter 10.

[0036] It should be noted that the cutter 10 here directly adopts existing technology, which has detailed specifications and usage standards for the cutter 10, so they will not be repeated here.

[0037] Specifically, such as Figure 2 and Figure 4 As shown, a rod 8 is fixedly connected to the outer wall of the horizontal end of the drive wheel 6 via a retaining ring 7. A through hole 15 is provided in the three-jaw chuck 14 to fit the rod 8. A retaining sleeve 16 is integrated on the outside of the through hole 15 and fixedly connected to the three-jaw chuck 14. A locking rod is screwed onto the inner wall of the retaining sleeve 16. The translation assembly includes a bottom rail 2 fixedly connected to the top of the horizontal end of the lathe 1. The inner wall of the moving table 3 is slidably connected to the outer wall of the horizontal end of the bottom rail 2. A positioning rod 4 is screwed onto the outer wall of the moving table 3, and the open end of the positioning rod 4 abuts against the outer wall of the bottom rail 2. The through hole 15 is located in the three-jaw chuck. The hole 14 is horizontally penetrating, so the hole 15 has a certain depth. According to the scale on the bottom rail 2, the moving table 3 is pushed so that the insertion rod 8 is engaged with the corresponding position of the hole 15. At this time, the cutter 10 is aligned with the corresponding position inside the metal bushing. The locking rod is rotated to engage with the inner surface wall of the fixed sleeve 16. The insertion rod 8 is fixed to the fixed sleeve 16 by contacting and rubbing the open end of the locking rod with the outer surface wall of the insertion rod 8. This further improves the stability of the linkage between the three-jaw chuck 14 and the insertion rod 8, and can also adjust the horizontal position of the figure-eight oil groove inside the bushing according to the processing requirements.

[0038] Specifically, such as Figure 2 and Figure 3 As shown, the pushing assembly includes a push plate 13 that drives the driven wheel 11. An inner rod 17, which slides with the mounting strip 9, is fixedly connected to the inner wall of the push plate 13. This ensures stable horizontal reciprocating motion of the mounting strip 9 while allowing adjustment of the longitudinal position of the mounting strip 9 and the cutter 10. Both the push plate 13 and the driven wheel 11 are rotatably connected to a retaining sleeve, and a linkage rod 12 is fixedly connected between the two sets of retaining sleeves. The push-pull assembly includes an outer frame 20 fixedly connected to the support base 5. A servo motor 22 is fixedly connected to the outer wall of the outer frame 20. A transmission rod 21 is fixedly connected to the output end of the machine 22. A pull rod 19 is screwed onto the outer wall of the transmission rod 21. A horizontal groove 18 that fits the pull rod 19 is opened through the mounting strip 9. A protrusion is fixedly connected to the bottom of the pull rod 19, and the protrusion is slidably connected to the inner wall of the bottom of the outer frame 20 through a sliding groove. The servo motor 22 drives the transmission rod 21 to rotate for a specified period. The pull rod 19 is constrained by the protrusion and the sliding groove at the bottom. The pull rod 19 drives the mounting strip 9 to make a specified longitudinal displacement, thereby realizing the processing of the figure-eight oil groove of a specified depth.

[0039] Working principle: The metal bushing is fixed by the three-jaw chuck 14. The moving table 3 is pushed so that the insertion rod 8 is inserted into the through hole 15 on the three-jaw chuck 14. The cutter 10 is inside the metal bushing. The motor on the lathe 1 drives the three-jaw chuck 14 and the metal bushing to rotate. The three-jaw chuck 14 drives the drive wheel 6 to rotate synchronously through the cooperation of the insertion rod 8 and the fixed ring 7. The drive wheel 6 is linked to the driven wheel 11. The driven wheel 11 drives the push plate 13 to perform horizontal reciprocating motion within a corresponding range through the linkage rod 12. The push plate 13 is linked to the cutter 10 through the mounting strip 9. In this way, the processing of the figure-eight oil groove begins. During this process, the servo motor 22 drives the transmission rod 21 to rotate for a specified period. The pull rod 19 is constrained by the bottom protrusion and the slide groove. The pull rod 19 drives the mounting strip 9 to perform longitudinal displacement of a specified distance. The cooperation between the transverse groove 18 and the pull rod 19 and the inner rod 17 The sliding engagement with the mounting strip 9 ensures stable horizontal reciprocating motion of the mounting strip 9 while allowing adjustment of the longitudinal position of the mounting strip 9 and the cutter 10. This enables the processing of the figure-eight oil groove to a specified depth and ensures the linkage between the metal bushing and the cutter 10. The through hole 15 is horizontally penetrating on the three-jaw chuck 14, so the through hole 15 has a certain depth. According to the scale on the bottom rail 2, the moving stage 3 is pushed so that the insertion rod 8 engages with the corresponding position of the through hole 15. At this time, the cutter 10 corresponds to the corresponding position inside the metal bushing. By rotating the locking rod, it is screwed into the inner surface of the fixed sleeve 16. The contact friction between the open end of the locking rod and the outer surface of the insertion rod 8 achieves the fixation of the insertion rod 8 and the fixed sleeve 16. This further improves the stability of the linkage between the three-jaw chuck 14 and the insertion rod 8, and also allows adjustment of the horizontal position of the figure-eight oil groove inside the bushing according to processing requirements.

[0040] The above description of the embodiments enables those skilled in the art to make or use the invention. 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 the invention. Therefore, the invention 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 disclosed herein.

Claims

1. A device for machining figure-eight oil grooves on metal bushings, comprising a lathe (1), a cutter (10), and a three-jaw chuck (14), characterized in that, The lathe (1) has a movable table (3) and a translation component for adjusting the horizontal position of the movable table (3) integrated at the top of its horizontal end. The movable table (3) is fixedly connected to a side seat (23) via a support base (5). A driven wheel (11) and a drive wheel (6) are rotatably connected to the top of the support base (5) and the side of the side seat (23), respectively. The drive wheel (6) is meshed with the driven wheel (11). The drive wheel (6) is driven by a three-jaw chuck (14). An installation strip (9) is inserted between the side seat (23) and the support base (5) through a wide slot. A push assembly for pushing the mounting strip (9) to reciprocate horizontally is integrated between the outer side of the drive wheel (11) and the driven wheel (6), and a push-pull assembly for pushing and pulling the mounting strip (9) longitudinally is integrated on the outer side of the support base (5). The outer wall of the horizontal end of the drive wheel (6) is fixedly connected to the insert rod (8) by the fixing ring (7). The three-jaw chuck (14) has a through hole (15) that fits with the insert rod (8). The outer side of the through hole (15) is integrated with a fixing sleeve (16) that is fixedly connected to the three-jaw chuck (14). The inner wall of the fixing sleeve (16) is screwed with a locking rod. The translation... The assembly includes a bottom rail (2) fixedly connected to the top of the horizontal end of the lathe (1), the inner surface of the moving table (3) being slidably connected to the outer surface of the horizontal end of the bottom rail (2), a positioning rod (4) being screwed onto the outer surface of the moving table (3), and the open end of the positioning rod (4) abutting against the outer surface of the bottom rail (2). The pushing assembly includes a push plate (13) that drives and cooperates with the driven wheel (11), an inner rod (17) that slides and cooperates with the mounting strip (9) being fixedly connected to the inner surface of the push plate (13), and a retaining sleeve being rotatably connected to the top of both the push plate (13) and the driven wheel (11). A linkage rod (12) is fixedly connected between the card sleeves. The push-pull assembly includes an outer frame (20) fixedly connected to the support base (5). A servo motor (22) is fixedly connected to the outer wall of the outer frame (20). A transmission rod (21) is fixedly connected to the output end of the servo motor (22). A pull rod (19) is screwed onto the outer wall of the transmission rod (21). A horizontal groove (18) that fits the pull rod (19) is opened through the mounting strip (9). A protrusion is fixedly connected to the bottom of the pull rod (19), and the protrusion is slidably connected to the inner wall of the bottom of the outer frame (20) through a sliding groove.

2. A method for machining an 8-shaped oil groove on a metal bushing, based on the 8-shaped oil groove machining apparatus for a metal bushing as described in claim 1, characterized in that, Includes the following steps: S1. Fix the metal bushing with a three-jaw chuck (14), and push the moving table (3) to insert the rod (8) into the through hole (15) on the three-jaw chuck (14), with the cutter (10) inside the metal bushing. S2. The motor on the lathe (1) drives the three-jaw chuck (14) and the metal bushing to rotate. The three-jaw chuck (14) drives the drive wheel (6) to rotate synchronously through the cooperation of the insert rod (8) and the fixed ring (7). The drive wheel (6) is linked to the driven wheel (11). The driven wheel (11) drives the push plate (13) to perform horizontal reciprocating motion within the corresponding range through the linkage rod (12). The push plate (13) is linked to the cutter (10) through the mounting strip (9). S3. The servo motor (22) drives the transmission rod (21) to rotate for a specified period. The pull rod (19) is constrained by the bottom protrusion and the slide groove. The pull rod (19) drives the mounting strip (9) to make a longitudinal displacement of a specified distance to complete the processing of the figure-eight oil groove.

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