An intermediate shaft chamfering device for an automotive drive shaft assembly

Abstract

The present invention relates to the technical field of drive shaft processing, and discloses an intermediate shaft chamfering device for an automobile drive shaft assembly. The present invention includes: a base, on which a conveying cylinder mechanism is provided for conveying the intermediate shaft and driving the intermediate shaft to rotate circumferentially. A chamfering disc mechanism for chamfering both ends of the intermediate shaft is provided on the conveying cylinder mechanism. The conveying cylinder mechanism includes an outer cylinder fixedly connected to the base, and a rotatable conveying roller is arranged inside the outer cylinder. The chamfering disc mechanism includes a shaft rod rotatably arranged inside the conveying roller and capable of driving the conveying roller to rotate with differential speed. Telescopic and resetting end rods are arranged at both ends of the shaft rod. The present invention realizes a new intermediate shaft chamfering method by setting the conveying cylinder mechanism and the chamfering disc mechanism, enabling the intermediate shaft to continuously chamfer multiple intermediate shafts simultaneously, thereby improving the chamfering efficiency of the intermediate shaft.

Description

Technical Field

[0001] The present invention relates to the technical field of drive shaft processing, and particularly relates to a chamfering device for the intermediate shaft of an automobile drive shaft assembly. Background Art

[0002] The automobile drive shaft assembly, also known as the drive shaft, is an important part of the automobile transmission system. It transmits the output power of the transmission to the wheels to drive the automobile forward. It is mainly composed of an intermediate shaft, universal joints, a dust cover and other parts. During the processing of the intermediate shaft of the drive shaft assembly, processes such as milling, quenching, and chamfering need to be carried out. Among them, chamfering the two ends of the intermediate shaft can not only remove burrs, but also reduce stress concentration and strengthen the strength of the spline end of the drive shaft.

[0003] At present, when chamfering the spline end of the intermediate shaft with the existing chamfering device, generally, the intermediate shaft is first conveyed or transferred to the chamfering area, then the intermediate shaft is fixed, and finally two rotating grinding discs (generally funnel-shaped) approach the two ends of the intermediate shaft in a clamping manner, and chamfer the two ends of the shaft rod by grinding.

[0004] However, this grinding method requires steps such as moving in, fixing, chamfering, releasing, and moving out of the intermediate shaft in sequence, and can only chamfer one intermediate shaft at a time, which limits the chamfering efficiency of the intermediate shaft during batch chamfering. Therefore, it is necessary to propose a new chamfering device for the intermediate shaft of an automobile drive shaft assembly. Summary of the Invention

[0005] To solve the above technical problems, the present invention provides a chamfering device for the intermediate shaft of an automobile drive shaft assembly.

[0006] The present invention is implemented by the following technical solutions: a base, on which a conveying cylinder mechanism is provided for conveying the intermediate shaft and driving the intermediate shaft to rotate circumferentially. A chamfering disc mechanism for chamfering the two ends of the intermediate shaft is provided on the conveying cylinder mechanism. The conveying cylinder mechanism includes an outer cylinder fixedly connected to the base. A rotatable conveying roller is arranged inside the outer cylinder. The chamfering disc mechanism includes a shaft rod rotatably arranged inside the conveying roller and capable of driving the conveying roller to rotate differentially. Telescopic and resetting end rods are arranged at both ends of the shaft rod. Turntables capable of rotating synchronously with the end rods and moving telescopically synchronously are arranged on both end rods. Grinding rings for chamfering the intermediate shaft are fixedly arranged on the turntables.

[0007] As a further improvement of the above solution, a feed hopper is arranged at the top of the outer cylinder, so that the intermediate shaft can enter the conveying cylinder mechanism regularly. An outlet is arranged at the bottom of the outer cylinder. The lengths of the feed hopper and the outlet are both greater than that of the outer cylinder.

[0008] As a further improvement of the above solution, arc-shaped openings are provided at both ends of the outer cylinder, so that both ends of the intermediate shaft can extend outside the conveying cylinder mechanism.

[0009] As a further improvement of the above solution, a motor for driving the conveying cylinder mechanism and the chamfering disk mechanism to rotate is fixedly mounted on the base, and the motor is drivingly connected to the shaft rod.

[0010] As a further improvement of the above scheme, a first gear is fixedly sleeved on the shaft rod, a double gear is rotatably installed on one end of the outer cylinder, and a second gear is fixedly sleeved on one end of the conveying roller, the first gear is meshed with the large gear on the double gear, and the second gear is meshed with the small gear on the double gear, so that when the shaft rod drives the chamfering disk mechanism to rotate through the end rod, it can also drive the conveying roller to rotate together, and the rotation speed of the conveying roller is lower than that of the chamfering disk mechanism.

[0011] As a further improvement of the above scheme, grooves are provided at both ends of the shaft rod, and the ends of the two end rods close to each other are respectively extended into the corresponding grooves and telescopically and slidably connected therewith, and a first spring is provided in the two grooves, and the two ends of the first spring are respectively abutted against the inner wall of the groove and one end of the end rod, so that the end rod can not only drive the chamfering disk mechanism to approach the conveying roller to chamfer and grind the intermediate shaft, but also realize resetting.

[0012] As a further improvement of the above scheme, a cam plate is fixedly installed at one end of the two end rods away from each other, and two support frames are fixedly installed on the base. A pair of rollers are provided on the two support frames, and the two pairs of rollers are respectively in contact with the corresponding cam plates, so that the chamfering plate mechanism can realize reciprocating displacement when rotating.

[0013] As a further improvement of the above scheme, the turntable is telescopically and slidably connected to the end rod, and a second spring is sleeved on the end rod. The two ends of the second spring are respectively against the turntable and the cam plate, so that the cam plate can achieve adaptive buffering when the turntable and the grinding ring are driven by the end rod to contact the intermediate shaft.

[0014] As a further improvement of the above scheme, a limiting mechanism is arranged on the turntable, and the limiting mechanism includes a plurality of sliding rods distributed in a ring and telescopically mounted on the turntable, and the two ends of the plurality of sliding rods are respectively fixedly mounted with the same limiting ring and the same rotating ring, and the plurality of sliding rods are each sleeved with a third spring, and the two ends of the plurality of third springs are respectively against the turntable and the rotating ring, thereby ensuring the stability of the intermediate shaft without affecting the rotation and transfer of the intermediate shaft.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The conveying cylinder mechanism composed of an outer cylinder and conveying rollers cooperates with the chamfering disc mechanism composed of a turntable, a grinding ring and other structures to form a new intermediate shaft chamfering device. Compared with the existing chamfering devices, it can chamfer both ends of the intermediate shaft while continuously conveying the intermediate shaft, and can also achieve continuous synchronous chamfering of multiple intermediate shafts. Compared with chamfering only one intermediate shaft at a time and requiring multiple steps successively during the chamfering process, it can greatly improve the chamfering efficiency of the intermediate shaft;

[0017] By setting the connection between the turntable and the end rod as an axially sliding connection and arranging a second spring between the cam disc and the turntable, when the end rod drives the turntable and the grinding ring to move and contact the end of the intermediate shaft under the drive of the cam disc, the grinding ring and the intermediate shaft can achieve adaptive buffering through the second spring. On the one hand, the grinding ring can contact the intermediate shaft in a soft contact manner to protect both of them, and at the same time, it also prevents the grinding ring from directly jamming the intermediate shaft and causing the intermediate shaft to be unable to rotate;

[0018] The limiting mechanism of the chamfering disc mechanism is composed of multiple sliding rods, limiting rings, rotating rings and multiple third springs. The distance between the two rotating rings is slightly larger than the length of the intermediate shaft, so that after the intermediate shaft falls into the conveying cylinder mechanism, its two ends are respectively close to the two rotating rings. When the two chamfering disc mechanisms approach each other to chamfer the intermediate shaft, the two rotating rings can limit the intermediate shaft to prevent its position from shifting or tilting during circumferential rotation and transfer chamfering. Brief Description of the Drawings

[0019] Figure 1 It is an overall front view display diagram of the intermediate shaft chamfering device for the automotive drive shaft assembly of the present invention;

[0020] Figure 2 It is an overall rear view display diagram of the intermediate shaft chamfering device for the automotive drive shaft assembly of the present invention;

[0021] Figure 3 It is a plane sectional view display diagram of the intermediate shaft chamfering device for the automotive drive shaft assembly of the present invention;

[0022] Figure 4 It is Figure 3 An enlarged display diagram of part A in

[0023] Figure 5 It is a disassembled display diagram of the conveying cylinder mechanism and the chamfering disc mechanism;

[0024] Figure 6 It is a disassembled display diagram of the conveying cylinder mechanism;

[0025] Figure 7 It is a disassembled display diagram and a partial sectional view display diagram of the chamfering disc mechanism;

[0026] Figure 8 Exploded view of the turntable, grinding ring, cam disc and limiting mechanism;

[0027] Figure 9 Partial sectional view of the shaft rod, end rod and turntable;

[0028] Figure 10 View of the abutment and rollers;

[0029] Figure 11 The first demonstration diagram of the intermediate shaft chamfering device for the automotive drive shaft assembly of the present invention;

[0030] Figure 12 The second demonstration diagram of the intermediate shaft chamfering device for the automotive drive shaft assembly of the present invention.

[0031] Main symbol description:

[0032] 1. Base; 2. Outer cylinder; 3. Feed hopper; 4. Discharge port; 5. Conveyor roller; 6. Shaft rod; 7. Motor; 8. First gear; 9. Double gear; 10. Second gear; 11. End rod; 12. First spring; 13. Turntable; 14. Grinding ring; 15. Cam disc; 16. Second spring; 17. Abutment; 18. Roller; 19. Slide bar; 20. Limiting ring; 21. Rotating ring; 22. Third spring. Detailed implementation manners

[0033] Next, in combination with the accompanying drawings and specific implementation manners, the present invention will be further described.

[0034] Please refer to Figures 1 to 12 , the intermediate shaft chamfering device for the automotive drive shaft assembly, comprising: a base 1, on which a conveying cylinder mechanism is provided for conveying the intermediate shaft and driving the intermediate shaft to rotate circumferentially, and a chamfering disc mechanism for chamfering both ends of the intermediate shaft is provided on the conveying cylinder mechanism;

[0035] The conveying cylinder mechanism includes an outer cylinder 2 fixedly connected to the base 1. The outer cylinder 2 is composed of a cylinder body and semi-circular end caps arranged at both ends of the cylinder body, so that an arc-shaped opening is reserved in the outer cylinder 2, whereby both ends of the intermediate shaft can extend outside the conveying cylinder mechanism, thus ensuring that the conveying cylinder mechanism can drive the intermediate shaft to rotate circumferentially and transfer counterclockwise along the arc-shaped opening area, and also enabling both ends of the intermediate shaft to come into contact with the grinding ring 14 smoothly. A feed hopper 3 is provided at the top of the outer cylinder 2, so that the intermediate shaft can enter the conveying cylinder mechanism regularly. A discharge port 4 is provided at the bottom of the outer cylinder 2. The lengths of the feed hopper 3 and the discharge port 4 are both greater than that of the outer cylinder 2. The overall length of the outer cylinder 2 is shorter than the length specification of the intermediate shaft, while the inner diameter length and width of the feed hopper 3 and the discharge port 4 are slightly larger than the specification of the intermediate shaft. A rotatable conveyor roller 5 is provided inside the outer cylinder 2. The conveyor roller 5 is designed with a hollow structure to reduce its weight. Moreover, the distance between the conveyor roller 5 and the outer cylinder 2 is equal to the diameter of the intermediate shaft, and rubber layers are wrapped and laid both outside the conveyor roller 5 and inside the outer cylinder 2, so as to increase the friction force between the two and the intermediate shaft, enabling the conveyor roller 5 to drive the intermediate shaft to rotate with sufficient friction force when transferring;

[0036] The chamfering disc mechanism includes a shaft rod 6 rotatably arranged inside the conveyor roller 5 and capable of driving the conveyor roller 5 to rotate at a differential speed. A motor 7 for driving the rotation of the conveying cylinder mechanism and the chamfering disc mechanism is fixedly installed on the base 1. Synchronous wheels are fixedly provided on the output shaft of the motor 7 and the shaft rod 6, and the same synchronous belt is sleeved on the two synchronous wheels. Telescopic and resetting end rods 11 are provided at both ends of the shaft rod 6. Rotating discs 13 that can rotate and move synchronously with the end rods 11 are provided on the two end rods 11. A grinding ring 14 for chamfering the intermediate shaft is fixedly provided on the rotating disc 13. Grooves are provided at both ends of the shaft rod 6. The mutually approaching ends of the two end rods 11 respectively extend into the corresponding grooves and are slidably connected thereto by means of telescopic movement. First springs 12 are provided in the two grooves. The two ends of the first spring 12 respectively abut against the inner wall of the groove and one end of the end rod 11, so that the end rod 11 can drive the chamfering disc mechanism to approach the conveyor roller 5 to chamfer and grind the intermediate shaft and can also be reset. Cam discs 15 are fixedly installed at the mutually remote ends of the two end rods 11. A plurality of positioning rods distributed in a ring shape are provided on the cam disc 15, and a plurality of through holes distributed in a ring shape are provided on the rotating disc 13. The plurality of positioning rods respectively extend into the plurality of through holes and are slidably connected thereto, so as to ensure that synchronous rotation can be stably achieved between the two. Two abutment frames 17 are fixedly installed on the base 1. A pair of rollers 18 are provided on each of the two abutment frames 17. The two pairs of rollers 18 are respectively in contact with the corresponding cam discs 15, so that the chamfering disc mechanism can achieve reciprocating displacement when rotating.

[0037] Through the above technical solution, compared with the existing chamfering equipment, it can chamfer both ends of the intermediate shaft while continuously conveying the intermediate shaft, and can also realize the continuous synchronous chamfering of multiple intermediate shafts. Compared with chamfering only one intermediate shaft at a time and requiring multiple steps successively during the chamfering process, the chamfering efficiency of the intermediate shaft can be greatly improved.

[0038] Please refer to Figure 4 , a first gear 8 is fixedly sleeved on the shaft rod 6, a double gear 9 is rotatably installed at one end of the outer cylinder 2, a second gear 10 is fixedly sleeved at one end of the conveying roller 5, the first gear 8 meshes with the large gear on the double gear 9, and the second gear 10 meshes with the small gear on the double gear 9. In this way, when the shaft rod 6 drives the chamfering disc mechanism to rotate through the end rod 11, it can also drive the conveying roller 5 to rotate accordingly, and make the rotation speed of the conveying roller 5 lower than that of the chamfering disc mechanism.

[0039] Through the above technical solution, a single driving device can be used to drive the chamfering disc mechanism and the conveying cylinder mechanism at the same time. Moreover, by reducing the rotation speed of the conveying roller 5, the transfer speed of the conveying cylinder mechanism for the intermediate shaft can be reduced, so that the intermediate shaft has sufficient time for chamfering treatment.

[0040] Please refer to Figure 4 and Figure 8 The turntable 13 is telescopically and slidably connected to the end rod 11, a second spring 16 is sleeved on the end rod 11, and both ends of the second spring 16 are abutted against the turntable 13 and the cam disc 15 respectively. In this way, when the cam disc 15 drives the turntable 13 and the grinding ring 14 to contact the intermediate shaft through the end rod 11, adaptive buffering can be realized.

[0041] Through the above technical solution, when the end rod 11 drives the turntable 13 and the grinding ring 14 to move and contact the end of the intermediate shaft under the drive of the cam disc 15, adaptive buffering can be realized between the grinding ring 14 and the intermediate shaft through the second spring 16. On the one hand, the grinding ring 14 can contact the intermediate shaft in a soft contact manner to protect both of them, and at the same time, it also avoids the grinding ring 14 directly pressing the intermediate shaft to death, resulting in the inability of the intermediate shaft to rotate.

[0042] Please refer to Figure 4 , Figure 7 and Figure 8 , a limiting mechanism is arranged on the turntable 13. The limiting mechanism includes a plurality of annularly distributed slide rods 19 telescopically installed on the turntable 13. The two ends of the plurality of slide rods 19 are fixedly installed with the same limiting ring 20 and the same rotating ring 21 respectively. A third spring 22 is sleeved on each of the plurality of slide rods 19. Both ends of the plurality of third springs 22 are abutted against the turntable 13 and the rotating ring 21 respectively. In this way, the stability of the intermediate shaft can be ensured while not affecting the rotation and transfer of the intermediate shaft.

[0043] Through the above technical solution, after the intermediate shaft falls into the conveying cylinder mechanism, its two ends are respectively close to the two rotating rings 21. When the two chamfering disk mechanisms approach each other to start chamfering the intermediate shaft, the two rotating rings 21 can limit the intermediate shaft to prevent its position from shifting or tilting during circumferential rotation and transfer chamfering.

[0044] The implementation principle of an intermediate shaft chamfering device for an automobile drive shaft assembly in an embodiment of the present application is as follows:

[0045] During deployment, the intermediate shaft chamfering device can be placed at the end of the conveying device or can be used directly.

[0046] During use, the motor 7 drives the shaft rod 6 to rotate through two synchronous wheels and a synchronous belt. The shaft rod 6 drives the two chamfering disk mechanisms to rotate through two end rods 11. At the same time, the shaft rod 6 also drives the double gear 9 to rotate through the first gear 8, and the double gear 9 then drives the conveying roller 5 to rotate at a slower speed than the shaft rod 6 through the second gear 10.

[0047] Subsequently, the intermediate shaft to be chamfered is placed in the feed hopper 3. The intermediate shaft smoothly and regularly falls into the outer cylinder 2 through the feed hopper 3. When the intermediate shaft is between the conveying roller 5 and the outer cylinder 2, it will achieve circumferential rotation and counterclockwise transfer from top to bottom under the drive of the conveying roller 5.

[0048] At the same time, as the cam disk 15 rotates, it will be squeezed by the roller 18 and the abutment 17, so as to frequently achieve reciprocating movement, and thereby drive the chamfering disk mechanism to continuously approach and move away from the end of the intermediate shaft until the rotating grinding ring 14 contacts the edge of the end of the rotating and transferring intermediate shaft and grinds it until the intermediate shaft is transferred to the discharge port 4 and automatically falls and discharges, thereby completing the end chamfering work of the intermediate shaft.

[0049] The above implementation manner is only the preferred implementation manner of the present invention and cannot be used to limit the protection scope of the present invention. Any non-substantial changes and substitutions made by those skilled in the art based on the present invention belong to the protection scope required by the present invention.

Claims

1. An intermediate shaft chamfering device for an automobile drive shaft assembly, characterized in that: include: A base (1), wherein the base (1) is provided with a conveying cylinder mechanism capable of conveying the intermediate shaft and driving the intermediate shaft to rotate in a circumferential direction, and the conveying cylinder mechanism is provided with a chamfering disk mechanism for chamfering two ends of the intermediate shaft; The conveying cylinder mechanism comprises an outer cylinder (2) fixedly connected to the base (1), and a rotatable conveying roller (5) is arranged inside the outer cylinder (2); The chamfering disk mechanism comprises a shaft (6) rotatably arranged in a conveying roller (5) and capable of driving the conveying roller (5) to rotate at a differential speed, both ends of the shaft (6) being provided with end rods (11) that can be retracted and reset, both end rods (11) being provided with a rotating disk (13) that can rotate synchronously with the end rods (11) and move synchronously with the end rods (11), and a grinding ring (14) for chamfering the intermediate shaft being fixedly arranged on the rotating disk (13); The rotating disk (13) is telescopically slidably connected to the end rod (11); a second spring (16) is sleeved on the end rod (11); two ends of the second spring (16) respectively abut against the rotating disk (13) and the cam disk (15), so that the cam disk (15) can achieve adaptive buffering when the rotating disk (13) and the grinding ring (14) are brought into contact with the intermediate shaft through the end rod (11).

2. The intermediate shaft chamfering device of the automobile drive shaft assembly according to claim 1, characterized in that: A feed hopper (3) is provided at the top of the outer cylinder (2), so that the intermediate shaft can enter the conveying cylinder mechanism in an orderly manner. A discharge port (4) is provided at the bottom of the outer cylinder (2). The lengths of the feed hopper (3) and the discharge port (4) are both greater than those of the outer cylinder (2).

3. The intermediate shaft chamfering device of the automobile drive shaft assembly according to claim 1, characterized in that: Both ends of the outer cylinder (2) are provided with arc-shaped openings, so that both ends of the intermediate shaft can extend outside the conveying cylinder mechanism.

4. The intermediate shaft chamfering device of the automobile drive shaft assembly according to claim 1, characterized in that: A motor (7) for driving the conveying cylinder mechanism and the chamfering disk mechanism to rotate is fixedly mounted on the base (1), and the motor (7) is drivingly connected to the shaft (6).

5. The intermediate shaft chamfering device of the automobile drive shaft assembly according to claim 1, characterized in that: A first gear (8) is fixedly sleeved on the shaft (6), a double gear (9) is rotatably mounted on one end of the outer cylinder (2), and a second gear (10) is fixedly sleeved on one end of the conveying roller (5), the first gear (8) meshes with a large gear on the double gear (9), and the second gear (10) meshes with a small gear on the double gear (9), so that when the shaft (6) drives the chamfering disk mechanism to rotate through the end rod (11), it can also drive the conveying roller (5) to rotate together, and the rotation speed of the conveying roller (5) is lower than that of the chamfering disk mechanism.

6. The intermediate shaft chamfering device of the automobile drive shaft assembly according to claim 1, characterized in that: Both ends of the shaft rod (6) are provided with grooves, and the ends of the two end rods (11) that are close to each other extend into the corresponding grooves and are telescopically and slidably connected thereto. The two grooves are provided with first springs (12), and the two ends of the first springs (12) respectively abut against the inner wall of the groove and one end of the end rod (11), so that the end rod (11) can drive the chamfering disk mechanism to approach the conveying roller (5) to chamfer and grind the intermediate shaft, and can also achieve reset.

7. The intermediate shaft chamfering device of the automobile drive shaft assembly according to claim 1, characterized in that: A cam plate (15) is fixedly mounted on the ends of the two end rods (11) that are away from each other. Two brackets (17) are fixedly mounted on the base (1). A pair of rollers (18) are disposed on the two brackets (17). The two pairs of rollers (18) are in contact with the corresponding cam plates (15) respectively, so that the chamfering plate mechanism can achieve reciprocating displacement when rotating.

8. The intermediate shaft chamfering device of the automobile drive shaft assembly according to claim 1, characterized in that: The rotating disk (13) is provided with a limiting mechanism, the limiting mechanism comprising a plurality of slide bars (19) which are telescopically mounted on the rotating disk (13) and are distributed in an annular shape, the two ends of the plurality of slide bars (19) being respectively fixedly mounted with a same limiting ring (20) and a same rotating ring (21), the plurality of slide bars (19) being sleeved with a third spring (22), the two ends of the plurality of third springs (22) respectively being abutted against the rotating disk (13) and the rotating ring (21), thereby ensuring the stability of the intermediate shaft without affecting the rotation and transfer of the intermediate shaft.

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