CN213808549U - Sliding sleeve structure of constant velocity universal joint of automobile - Google Patents
Sliding sleeve structure of constant velocity universal joint of automobile Download PDFInfo
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- CN213808549U CN213808549U CN202022356288.XU CN202022356288U CN213808549U CN 213808549 U CN213808549 U CN 213808549U CN 202022356288 U CN202022356288 U CN 202022356288U CN 213808549 U CN213808549 U CN 213808549U
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- 238000003466 welding Methods 0.000 claims abstract description 104
- 238000000034 method Methods 0.000 claims description 13
- 239000007788 liquid Substances 0.000 claims description 4
- 238000000926 separation method Methods 0.000 claims description 4
- 238000013461 design Methods 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 238000005520 cutting process Methods 0.000 description 17
- 239000000463 material Substances 0.000 description 7
- 239000002184 metal Substances 0.000 description 7
- 230000007547 defect Effects 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- 229920001169 thermoplastic Polymers 0.000 description 5
- 239000004416 thermosoftening plastic Substances 0.000 description 5
- 239000007787 solid Substances 0.000 description 4
- 238000005452 bending Methods 0.000 description 3
- 239000003638 chemical reducing agent Substances 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 230000009191 jumping Effects 0.000 description 3
- 238000003672 processing method Methods 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 238000009721 upset forging Methods 0.000 description 3
- 239000013585 weight reducing agent Substances 0.000 description 3
- 210000001503 joint Anatomy 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
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Abstract
The utility model provides an automobile constant velocity cardan joint sliding sleeve structure, belongs to constant velocity cardan joint technical field, and wherein automobile constant velocity cardan joint sliding sleeve structure includes outer sleeve joint, hollow shaft and spline connection axle, and outer sleeve joint links to each other with the tip of drive shaft, and one end of hollow shaft and outer sleeve joint friction weld link to each other, and the spline connection axle links to each other with gearbox output shaft or hub reduction gear input shaft, and outer sleeve joint and the spline connection axle are close to the one end of hollow shaft and are provided with the blind hole respectively, the beneficial effects of the utility model are that, the utility model discloses a connect the hollow shaft through the friction welding mode at constant velocity cardan joint sliding sleeve tip and extend the universal joint, make the arrangement clearance between gearbox and the reduction gear accord with the design requirement, can effectively weaken NVH resonance peak value and improve user's riding comfort, and the whole weight of constant velocity cardan joint reduces, the purpose of light weight is achieved.
Description
Technical Field
The utility model relates to a constant velocity cardan joint technical field especially relates to an automobile constant velocity cardan joint sliding sleeve structure.
Background
The constant velocity joint drive shaft assembly is an important part in an automobile drive system and is also an important factor for ensuring the safe operation of a vehicle. In the current market, because the structural design is not reasonable, the constant velocity joint drive shaft assemblies produced by a plurality of vehicle enterprises have the problems of over standard weight, small arrangement gap, easy resonant NVH and the like, thereby influencing the oil consumption, the safety performance and the riding comfort of vehicles.
At present, the end part of a constant velocity universal joint sliding sleeve, a gearbox and a reducer are matched, a domestic autonomous vehicle and a part of joint vehicle enterprises use a solid structure, due to the problems of fit clearance and arrangement angle of the gearbox and the reducer, some vehicle types have to lengthen the solid handle part of the end part of the traditional universal joint to avoid the problem of small fit clearance of the gearbox and the reducer, but the lengthening of the handle part of the constant velocity universal joint increases the weight of a constant velocity universal joint driving shaft assembly, further increases the weight of the whole vehicle, finally leads to the increase of oil consumption, can generate a series of NVH problems, and is contrary to the call of energy conservation and emission reduction advocated by the nation.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides an automobile constant velocity cardan joint sliding sleeve structure increases the hollow shaft through the mode at constant velocity cardan joint sliding sleeve tip through friction welding and adds the extension universal joint, makes arranging the clearance between gearbox and the reduction gear accord with the designing requirement, can effectively weaken NVH resonance peak value and improve user's riding comfort, and the whole weight of constant velocity cardan joint reduces moreover, has reached lightweight purpose.
In order to achieve the above object, the present invention provides a technical solution for solving the technical problem: car constant velocity cardan joint sliding sleeve structure, including outer sleeve joint, hollow shaft and spline connecting axle, outer sleeve joint links to each other with the tip of drive shaft, the one end of hollow shaft with outer sleeve joint friction weld links to each other, the other end of hollow shaft with spline connecting axle friction weld links to each other, spline connecting axle links to each other with gearbox output shaft or hub reduction gear input shaft, outer sleeve joint with the one end that spline connecting axle is close to the hollow shaft is provided with the blind hole respectively.
Furthermore, one end of the blind hole is provided with a process chamfer.
Further, the angle of the process chamfer is set to be 110-130 degrees.
Furthermore, the outer diameters of the joints among the outer sleeve joint, the hollow shaft and the spline connecting shaft are equal, the aperture of the blind hole is equal to that of the hollow shaft, and chamfer structures convenient for separation of welding liquid are respectively arranged at two ends of the hollow shaft.
Further, the angle of the chamfer structure is set to be 30-60 degrees.
The utility model has the advantages that:
1. the utility model discloses a cut off the back with current constant velocity cardan joint sliding sleeve, the mode through friction welding increases the hollow shaft between and makes the universal joint extension, length through changing the hollow shaft can make arranging the clearance between gearbox and the reduction gear accord with different designing requirement, and the hollow shaft that increases makes the whole weight reduction of constant velocity cardan joint, lightweight purpose has been reached, connect the hollow shaft between outer cup joint and spline connection axle through friction welding's mode, overall structure's rigidity and mode improve, effectively weakened NVH resonance peak value and improved user's riding comfort.
2. The chamfering structures convenient for the separation of welding liquid are arranged at the two ends of the hollow shaft, and when friction welding is carried out between the hollow shaft and the outer sleeve joint and between the hollow shaft and the spline connecting shaft, the chamfering structures are filled with thermoplastic deformation metal to form weld metal, so that the weld is more uniform, and a good welding joint can be formed; the blind holes are formed in the end portions of the outer sleeve joint and the spline connecting shaft, the process chamfer is arranged at one end of each blind hole, when the two ends of the hollow shaft are in friction welding with the outer sleeve joint and the spline connecting shaft, the flash and the thermoplastic deformation metal formed on the inner wall of the hollow shaft can be uniformly distributed at the welding seam, the tissue structure of the welding seam is more stable, the welding seam is more uniform, and the structure of the blind holes plays a role in weight reduction.
To sum up, the utility model discloses a connect the hollow shaft at constant velocity universal joint sliding sleeve tip through friction welding's mode and come the extension universal joint, make arranging the clearance between gearbox and the reduction gear accord with the designing requirement, can effectively weaken NVH resonance peak value and improve user's riding comfort, the whole weight of constant velocity universal joint reduces moreover, has reached lightweight purpose.
Drawings
The contents of the various figures of the specification and the labels in the figures are briefly described as follows:
fig. 1 is a schematic structural view of the present invention;
the labels in the above figures are: 1. the outer sleeve joint, 2, the hollow shaft, 21, the chamfer structure, 3, the spline connecting shaft, 4, the blind hole and 41, the process chamfer.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solutions in the embodiments, and the following embodiments are used for illustrating the present invention, but do not limit the scope of the present invention.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The utility model discloses specific embodiment does: as shown in figure 1, the sliding sleeve structure of the constant velocity universal joint of the automobile comprises an outer sleeve joint 1, a hollow shaft 2 and a spline connecting shaft 3, wherein the outer sleeve joint 1 is connected with the end part of a driving shaft, one end of the hollow shaft 2 is connected with the outer sleeve joint 1 in a friction welding way, the other end of the hollow shaft 2 is connected with the spline connecting shaft 3 in a friction welding way, the spline connecting shaft 3 is connected with an output shaft of a gearbox or an input shaft of a hub reduction gear, the hollow shaft 2 is additionally arranged between the outer sleeve joint 1 and the spline connecting shaft 3 in a friction welding way to lengthen the universal joint, the arrangement clearance between the gearbox and the reduction gear can meet different design requirements by changing the length of the hollow shaft 2, the overall weight of the constant velocity universal joint is reduced by the additionally arranged hollow shaft 2, the aim of lightening is achieved, the hollow shaft 2 is connected between the outer sleeve joint 1 and the spline connecting shaft 3 in a friction welding way, the rigidity and the mode of the whole structure are improved, the NVH resonance peak value is effectively weakened, and the riding comfort of a user is improved.
Specifically, blind holes 4 are respectively formed in one ends, close to the hollow shaft 2, of the outer sleeve joint 1 and the spline connecting shaft 3, a process chamfer 41 is arranged at one end of each blind hole 4, the angle of each process chamfer 41 is set to be 110-130 degrees, optimally, the angle of each process chamfer 41 is set to be 120 degrees, when the two ends of the hollow shaft 2 are in friction welding with the outer sleeve joint 1 and the spline connecting shaft 3, burrs and thermoplastic deformation metal formed on the inner wall of the hollow shaft 2 can be uniformly distributed at a welding seam, the tissue structure of the welding seam is more stable, the welding seam is more uniform, the process chamfers 41 provide storage space for the burrs generated by the friction welding, and the structure of the blind holes 4 plays a role in weight reduction.
Specifically, the outer sleeve joint 1, the outer diameter of the junction between the hollow shaft 2 and the spline connecting shaft 3 is equal, the aperture of the blind hole 4 is equal to that of the hollow shaft 2, the two ends of the hollow shaft 2 are respectively provided with a chamfer structure 21 convenient for the separation of welding liquid, the angle of the chamfer structure 21 is set to be 30-60 degrees, the optimum angle is 45 degrees, when the hollow shaft 2 and the outer sleeve joint 1 are subjected to friction welding between the spline connecting shaft 3, thermoplastic deformation metal can fill the chamfer structure 21 to form weld metal, so that the weld is more uniform, meanwhile, the thermoplastic deformation metal on the inner wall of the junction surface of the outer sleeve joint 1, the hollow shaft 2 and the spline connecting shaft 3 can be uniformly distributed at the weld, and a good welding joint can be.
Example 1
When the materials of the outer sleeve joint 1, the hollow shaft 2 and the spline connecting shaft 3 are 55#, the processing method of the sliding sleeve structure of the constant velocity universal joint of the automobile comprises the following steps:
1) cutting an existing universal joint sliding sleeve structure from the middle to form two sections of solid shafts, respectively machining blind holes 4 at the abutting surfaces of the two sections of solid shafts to form an outer sleeve joint 1 and a spline connecting shaft 3, machining a hollow shaft 2 with corresponding length according to installation requirements, and enabling the outer diameters of the hollow shaft 2, the outer sleeve joint 1 and the spline connecting shaft 3 to be equal, so that the aperture of the hollow shaft 2 is equal to that of the blind holes 4;
2) a hollow shaft 2, an outer sleeve joint 1 and a spline connecting shaft 3 are subjected to friction welding by using a friction welding machine, the structure of the friction welding machine is the prior art, the friction welding machine comprises a workbench and a positioning fixture and a machine tool spindle which are arranged on the workbench relatively, the positioning fixture can clamp and position shaft parts, and a chuck for clamping the shaft parts is installed at the end part of the machine tool spindle. The hollow shaft 2 is positioned and clamped on a positioning fixture of a workbench of a friction welding machine, the central axis of the hollow shaft 2 is opposite to a main shaft of the friction welding machine, a spline connecting shaft 3 is positioned and clamped on a chuck of the friction welding machine, the main shaft of the friction welding machine rotates and drives the spline connecting shaft 3 to perform feed motion towards the direction of the hollow shaft 2, the spline connecting shaft 3 rotates at a high speed of 1900rpm/min, meanwhile, the spline connecting shaft 3 is applied with axial pressure contact of 35 KN-70 KN, the spline connecting shaft 3 and the hollow shaft 2 are rotated, frictionally heated for 5500 ms-6000 ms, the frictional heating temperature is 900 ℃, and the frictional deformation reaches 10 mm;
2) the main shaft of the friction welding machine stops rotating instantaneously for 100ms, and simultaneously applies larger axial upsetting pressure to the spline connecting shaft 3, wherein the upsetting pressure is 200N/mm2Extruding the spline connecting shaft 3 and the hollow shaft 2, delaying the upsetting for 2000-2500 ms, and stopping when the upsetting deformation reaches 4 mm;
3) after a welding sub-assembly between the spline connecting shaft 3 and the hollow shaft 2 is taken out, the welding sub-assembly is positioned and clamped on a positioning fixture of a workbench of a friction welding machine, the central axis of the welding sub-assembly is opposite to a main shaft of the friction welding machine, the outer sleeve joint 1 is positioned and clamped on a chuck of the friction welding machine, the main shaft of the friction welding machine rotates and drives the outer sleeve joint 1 to perform feed motion towards the direction of the welding sub-assembly, and the friction welding machine performs upset forging after rotary friction welding according to the methods of the step 1) and the step 2);
4) and taking out the welded sliding sleeve structure from the friction welding machine, cutting and correcting the flash formed at the friction butt joint, and grinding and forming.
Performing a pressure fracture test on the formed universal joint sliding sleeve structure through a pressure fracture testing machine, wherein the pressure fracture force borne by the sliding sleeve structure when the sliding sleeve structure is deformed at a welding seam but not fractured is 50% -60% of the static torsion of the assembly; the welding defects such as microcracks and the like do not appear at the welding seam through ultrasonic flaw detection; slicing in a +/-20 mm area near a welding seam, observing the sliced tissue form under a metallographic microscope, and finding no welding defect, wherein the hardness near the welding seam is HRC36 Min-HRC 39Max, and the jumping amount is 0.2-0.5 mm; cutting the parts of +/-20 mm near the welding seams at the two ends of the sliding sleeve structure to form a tubular structure, cutting 14-16 petals on the periphery of the tube wall at a cutting fracture, wherein the maximum cutting depth is 2mm over the welding seams and the minimum cutting depth is in the center of the welding seams, expanding the cut tube wall into a 90-degree opening by using a tool to ensure that the petals are perpendicular to the central line of the tubular structure, and then bending the cut tube wall (petals) by using a cylindrical tool without material fracture.
Example 2
When the material of the outer sleeve joint 1 and the spline connecting shaft 3 is 55# and the material of the hollow shaft 2 is 40Cr, the processing method of the sliding sleeve structure of the constant velocity universal joint of the automobile is different from that of the embodiment 1 in the steps of 2), 3) and 4), specifically:
2) the hollow shaft 2 is positioned and clamped on a positioning fixture of a friction welding machine workbench, the central axis of the hollow shaft 2 is opposite to a main shaft of the friction welding machine, the spline connecting shaft 3 is positioned and clamped on a chuck of the friction welding machine, the main shaft of the friction welding machine rotates and drives the spline connecting shaft 3 to perform feed motion towards the direction of the hollow shaft 2, the spline connecting shaft 3 rotates at a high speed of 1800rpm/min, meanwhile, the spline connecting shaft 3 is applied with axial pressure contact of 35 KN-50 KN, the spline connecting shaft 3 and the hollow shaft 2 are heated by rotary friction for 4500 ms-5000 ms, and the friction heating temperature is 850 ℃ until reaching 10mm friction deformation;
3) the main shaft of the friction welding machine stops rotating instantaneously for 100ms, and simultaneously applies larger axial upsetting pressure to the spline connecting shaft 3, wherein the upsetting pressure is 180N/mm2Extruding the spline connecting shaft 3 and the hollow shaft 2, delaying the upsetting for 1500-2000 ms, and stopping when the upsetting deformation reaches 4 mm;
4) after the welding sub-assembly between the spline connecting shaft 3 and the hollow shaft 2 is taken out, the welding sub-assembly is positioned and clamped on a workbench of a friction welding machine, the central axis of the welding sub-assembly is opposite to the main shaft of the friction welding machine, the outer sleeve joint 1 is positioned and clamped on a chuck of the friction welding machine, the main shaft of the friction welding machine rotates and drives the outer sleeve joint 1 to perform feed motion towards the direction of the welding sub-assembly, and the friction welding machine performs upset forging after rotary friction welding according to the methods of the step 2) and the step 3).
Performing a pressure fracture test on the formed universal joint sliding sleeve structure through a pressure fracture testing machine, wherein the pressure fracture force borne by the sliding sleeve structure when the sliding sleeve structure is deformed at a welding seam but not fractured is 50% -60% of the static torsion of the assembly; the welding defects such as microcracks and the like do not appear at the welding seam through ultrasonic flaw detection; slicing in a +/-20 mm area near a welding seam, observing the sliced tissue form under a metallographic microscope, and finding no welding defect, wherein the hardness near the welding seam is HRC35 Min-HRC 38Max, and the jumping amount is 0.2-0.5 mm; cutting the parts of +/-20 mm near the welding seams at the two ends of the sliding sleeve structure to form a tubular structure, cutting 14-16 petals on the periphery of the tube wall at a cutting fracture, wherein the maximum cutting depth is 2mm over the welding seams and the minimum cutting depth is in the center of the welding seams, expanding the cut tube wall into a 90-degree opening by using a tool to ensure that the petals are perpendicular to the central line of the tubular structure, and then bending the cut tube wall (petals) by using a cylindrical tool without material fracture.
Example 3
When the material of the outer sleeve joint 1, the hollow shaft 2 and the spline connecting shaft 3 is 40Cr, the processing method of the sliding sleeve structure of the constant velocity universal joint of the automobile is different from that of the embodiment 1 in the steps 2), 3) and 4), specifically:
2) the hollow shaft 2 is positioned and clamped on a positioning fixture of a workbench of a friction welding machine, the central axis of the hollow shaft 2 is opposite to a main shaft of the friction welding machine, a spline connecting shaft 3 is positioned and clamped on a chuck of the friction welding machine, the main shaft of the friction welding machine rotates and drives the spline connecting shaft 3 to perform feed motion towards the direction of the hollow shaft 2, the spline connecting shaft 3 rotates at a high speed of 1700rpm/min, meanwhile, the spline connecting shaft 3 is in axial pressure contact with 25 KN-35 KN, the spline connecting shaft 3 and the hollow shaft 2 are heated by rotary friction for 4000 ms-4500 ms, the friction heating temperature is 800 ℃, and the friction deformation reaches 10 mm;
3) the main shaft of the friction welding machine stops rotating instantaneously for 100ms, and simultaneously applies larger axial upsetting pressure to the spline connecting shaft 3, wherein the upsetting pressure is 150N/mm2Extruding the spline connecting shaft 3 and the hollow shaft 2, delaying the upsetting for 1000-1500 ms, and stopping when the upsetting deformation reaches 4 mm;
4) after the welding sub-assembly between the spline connecting shaft 3 and the hollow shaft 2 is taken out, the welding sub-assembly is positioned and clamped on a workbench of a friction welding machine, the central axis of the welding sub-assembly is opposite to the main shaft of the friction welding machine, the outer sleeve joint 1 is positioned and clamped on a chuck of the friction welding machine, the main shaft of the friction welding machine rotates and drives the outer sleeve joint 1 to perform feed motion towards the direction of the welding sub-assembly, and the friction welding machine performs upset forging after rotary friction welding according to the methods of the step 2) and the step 3).
Performing a pressure fracture test on the formed universal joint sliding sleeve structure through a pressure fracture testing machine, wherein the pressure fracture force borne by the sliding sleeve structure when the sliding sleeve structure is deformed at a welding seam but not fractured is 50% -60% of the static torsion of the assembly; the welding defects such as microcracks and the like do not appear at the welding seam through ultrasonic flaw detection; slicing in a +/-20 mm area near a welding seam, observing the sliced tissue form under a metallographic microscope, and finding no welding defect, wherein the hardness near the welding seam is HRC35 Min-HRC 38Max, and the jumping amount is 0.2-0.5 mm; cutting the parts of +/-20 mm near the welding seams at the two ends of the sliding sleeve structure to form a tubular structure, cutting 14-16 petals on the periphery of the tube wall at a cutting fracture, wherein the maximum cutting depth is 2mm over the welding seams and the minimum cutting depth is in the center of the welding seams, expanding the cut tube wall into a 90-degree opening by using a tool to ensure that the petals are perpendicular to the central line of the tubular structure, and then bending the cut tube wall (petals) by using a cylindrical tool without material fracture.
To sum up, the utility model discloses a connect the hollow shaft at constant velocity universal joint sliding sleeve tip through friction welding's mode and come the extension universal joint, make arranging the clearance between gearbox and the reduction gear accord with the designing requirement, can effectively weaken NVH resonance peak value and improve user's riding comfort, the whole weight of constant velocity universal joint reduces moreover, has reached lightweight purpose.
The foregoing is merely illustrative of some of the principles of the present invention and the description is not intended to limit the invention to the specific constructions and applications shown, so that all modifications and equivalents that may be utilized are within the scope of the invention.
Claims (5)
1. The utility model provides an automobile constant velocity cardan sliding sleeve structure, its characterized in that, includes outer sleeve joint (1), hollow shaft (2) and spline connecting axle (3), outer sleeve joint (1) links to each other with the tip of drive shaft, the one end of hollow shaft (2) with outer sleeve joint (1) friction weld links to each other, the other end of hollow shaft (2) with spline connecting axle (3) friction weld links to each other, spline connecting axle (3) link to each other with gearbox output shaft or hub reduction gear input shaft, outer sleeve joint (1) with the one end that spline connecting axle (3) are close to hollow shaft (2) is provided with blind hole (4) respectively.
2. The automobile constant velocity joint sliding sleeve structure according to claim 1, characterized in that: one end of the blind hole (4) is provided with a process chamfer (41).
3. The automobile constant velocity joint sliding sleeve structure according to claim 2, characterized in that: the angle of the process chamfer (41) is set to be 110-130 degrees.
4. The sliding sleeve structure for an automobile constant velocity universal joint according to any one of claims 1 to 3, characterized in that: the outer diameter of the joint between the outer sleeve joint (1), the hollow shaft (2) and the spline connecting shaft (3) is equal, the aperture of the blind hole (4) is equal to that of the hollow shaft (2), and chamfering structures (21) convenient for separation of welding liquid are arranged at the two ends of the hollow shaft (2) respectively.
5. The automobile constant velocity joint sliding sleeve structure according to claim 4, wherein: the angle of the chamfer structure (21) is set to be 30-60 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022356288.XU CN213808549U (en) | 2020-10-21 | 2020-10-21 | Sliding sleeve structure of constant velocity universal joint of automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022356288.XU CN213808549U (en) | 2020-10-21 | 2020-10-21 | Sliding sleeve structure of constant velocity universal joint of automobile |
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| Publication Number | Publication Date |
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| CN213808549U true CN213808549U (en) | 2021-07-27 |
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| CN202022356288.XU Active CN213808549U (en) | 2020-10-21 | 2020-10-21 | Sliding sleeve structure of constant velocity universal joint of automobile |
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- 2020-10-21 CN CN202022356288.XU patent/CN213808549U/en active Active
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