CN-224204905-U - Rotary joint module

CN224204905UCN 224204905 UCN224204905 UCN 224204905UCN-224204905-U

Abstract

The utility model discloses a joint rotation module which comprises a motor assembly, a speed reducing assembly and a locking piece, wherein the motor assembly comprises a stator and a rotor, a mounting hole is formed in the rotor, the speed reducing assembly comprises a cam shaft, the cam shaft is arranged in the mounting hole in a penetrating mode, a transmission surface is arranged on the cam shaft, the outer diameter of the transmission surface gradually decreases along the direction that the central axis of the cam shaft is close to the motor assembly, a matching surface for abutting the transmission surface is arranged on the inner wall of the mounting hole, the locking piece abuts against one side, away from the speed reducing assembly, of the rotor and is locked with the end portion of the cam shaft, and the locking piece and the transmission surface of the cam shaft jointly clamp the rotor. According to the utility model, the transmission surface and the matching surface are obliquely arranged, so that coaxiality errors between the rotor and the cam shaft can be avoided through the abutted transmission surface and the matching surface during installation, and meanwhile, the transmission surface and the matching surface ensure that a larger contact area exists between the rotor and the cam shaft, and stable transmission between the rotor and the cam shaft is ensured.

Inventors

LIANG SHUAIFENG
XING CHUNRONG
Jin Shacheng
LIU QI
HAN YINAN
DING MIAOJIANG
HU XINFANG
He Shuaiqi
YU JINGLIAN
YUAN LIN
HAN TING
ZHANG LEILEI

Assignees

浙江捷昌线性驱动科技股份有限公司

Dates

Publication Date: 20260505
Application Date: 20250417

Claims (10)

1. A joint rotation module, comprising: The motor assembly comprises a stator and a rotor, wherein the rotor is rotatably arranged in the stator, and a mounting hole penetrating through the rotor along the axial direction is formed in the rotor; The speed reducing assembly comprises a cam shaft, the cam shaft is arranged in the mounting hole in a penetrating manner, a transmission surface surrounding the outer peripheral side of the cam shaft is arranged on the cam shaft, the outer diameter of the transmission surface gradually decreases along the direction that the central axial direction of the cam shaft is close to the motor assembly, and a matching surface for abutting against the transmission surface is arranged on the inner wall of the mounting hole; the locking piece is abutted to one side of the rotor, which is away from the speed reduction assembly, and is locked with the end part of the cam shaft, and the locking piece and the transmission surface of the cam shaft clamp the rotor together so as to be linked with the rotor.
2. The joint rotation module according to claim 1, wherein the rotor comprises a connecting section and a matching section, the matching section is positioned on one side of the connecting section close to the speed reducing assembly, and the inner diameter of the mounting hole of the matching section is gradually reduced along the direction of the central axial locking piece of the mounting hole so as to form the matching surface.
3. The joint rotating module set according to claim 2, wherein the cam shaft comprises a transmission section provided with the transmission surface and a mounting section penetrating through the connection section, an avoidance ring groove surrounding the cam shaft is arranged on the outer side wall of the cam shaft, and the avoidance ring groove is located between the transmission section and the mounting section.
4. The joint rotation module according to claim 2, wherein a chamfer surrounding the mounting hole is provided at a junction of the end face of the rotor and the mating face.
5. The joint rotation module according to claim 1, wherein the transmission surface is a conical surface facing the locking member, and the conical surface is arranged around the cam shaft.
6. The joint rotation module according to claim 1, wherein the driving surface comprises a plurality of inclined surfaces arranged towards the locking member, and the plurality of inclined surfaces are spliced to form the driving surface surrounding the cam shaft.
7. The joint rotation module according to claim 1, wherein the locking member is a locking nut screwed to an end of the cam shaft to be locked to the cam shaft.
8. The joint rotating module according to claim 1, wherein the locking member is a C-shaped clamping ring, an annular clamping groove is formed in the cam shaft, and the C-shaped clamping ring is clamped in the annular clamping groove and extends out of the annular clamping groove to be abutted with the rotor.
9. The joint rotating module according to claim 1, wherein an avoidance groove is formed in one side, away from the speed reduction assembly, of the rotor, and the locking piece is embedded in the avoidance groove.
10. The joint rotating module according to claim 1, wherein the speed reducing assembly further comprises a flexible gear arranged around the cam shaft, a flexible bearing connected between the flexible gear and the cam shaft, a steel gear sleeved on the outer side of the flexible gear, and an output shaft fixed on the steel gear, outer ring teeth of the flexible gear are meshed with inner ring teeth of the steel gear, and the output shaft is arranged in the cam shaft in a penetrating mode.

Description

Rotary joint module Technical Field The utility model belongs to the field of driving equipment, and particularly relates to a joint rotation module. Background Along with the rapid development of industrial automation technology, the application of the joint rotation module is more and more extensive. In the joint rotation module, the rotor of the motor and the cam shaft of the speed reducer are very easy to generate a gap when being matched, so that coaxiality errors exist between the rotor of the motor and the cam shaft of the speed reducer, the coaxiality errors enable the joint rotation module to generate larger vibration during working, and stable transmission of the joint rotation module is affected. In order to solve the problem, in the prior art, a mounting groove is formed in one end, far away from the speed reducer, of the rotor and the cam shaft, an expansion sleeve is embedded in the mounting groove and is respectively propped against the cam shaft and the rotor to fill a gap between the rotor of the motor and the cam shaft of the speed reducer, but the expansion sleeve fills the gap between the cam shafts of the rotor and simultaneously only can drive the cam shaft of the speed reducer through the expansion sleeve, and the matching surface of the rotor and the cam shaft is greatly shortened because the expansion sleeve is short, so that the transmission effect between the rotor and the cam shaft is poor. Disclosure of utility model The utility model aims to solve the technical problem of providing a joint rotation module to solve the problem of poor transmission effect between a rotor and a cam shaft. The utility model adopts the following technical scheme that the joint rotating module comprises a motor assembly, a speed reducing assembly and a locking piece, wherein the motor assembly comprises a stator and a rotor, the rotor is rotatably arranged in the stator, a mounting hole penetrating through the rotor along the axial direction is formed in the rotor, the speed reducing assembly comprises a cam shaft, the cam shaft penetrates through the mounting hole, a transmission surface surrounding the outer peripheral side of the cam shaft is arranged on the cam shaft, the outer diameter of the transmission surface gradually decreases along the direction of the central axial direction of the cam shaft, which is close to the motor assembly, a matching surface for abutting against the transmission surface is arranged on the inner wall of the mounting hole, and the locking piece abuts against one side of the rotor, which is away from the speed reducing assembly, is locked with the end part of the cam shaft, and the locking piece and the transmission surface of the cam shaft jointly clamp the rotor so as to be interlocked with the rotor. The technical scheme has the following technical effects: According to the utility model, the cam shaft is arranged in the mounting hole of the rotor in a penetrating way, the transmission surface inclined towards the locking piece is arranged on the cam shaft, and the matching surface matched with the transmission surface is arranged in the mounting hole of the rotor, so that when the cam shaft, the rotor and the locking piece are mounted, the cam shaft is firstly inserted into the mounting hole of the rotor until the transmission surface is abutted with the matching surface, and then the locking piece is locked with the end part of the cam shaft, so that the mounting of the cam shaft and the rotor can be completed. At this moment, the driving surface on the camshaft is abutted with the mating surface of rotor, and the retaining member is abutted with the terminal surface that the rotor deviates from the speed reduction assembly for camshaft and retaining member clamp the rotor jointly in the axial, and then make driving surface and mating surface keep the butt, and when the rotor rotates, rotor and camshaft keep the interlock under the static friction effect between driving surface and the mating surface, realize the stable transmission between motor assembly and the speed reduction assembly. Because the external diameter of driving surface is close to the direction of motor assembly along the central axis of camshaft and reduces gradually, namely, the driving surface inclines towards the retaining member, so driving surface and mating surface slope set up, the axiality error is avoided producing between rotor and the camshaft to accessible transmission surface and the mating surface of looks butt during the installation, simultaneously, driving surface and mating surface guarantee to have great area of contact between rotor and the camshaft, and then guarantee to have great static friction between the two, let the process of rotor and camshaft transmission moment of torsion more reliable and stable transmission between rotor and the camshaft is guaranteed, reduce rotor and camshaft because of contact failure or atress uneven lead to the possibility of cooperation i