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CN-224209443-U - Wave generator assembly fixture of harmonic reducer ware

CN224209443UCN 224209443 UCN224209443 UCN 224209443UCN-224209443-U

Abstract

The utility model provides a wave generator assembly tool of a harmonic reducer, which comprises a press mounting base and a guide shaft arranged on the press mounting base, wherein the guide shaft comprises a first guide part and a second guide part, the first guide part is used for connecting a cam, the cam can slide along the axial direction of the first guide part, a guide sleeve is sleeved on the second guide part and can slide along the axial direction of the second guide part, a radially protruding positioning part is arranged on the peripheral wall of the guide sleeve, the first guide part, the second guide part and the positioning part are coaxially arranged, the positioning part is used for sleeving a flexible bearing, and the peripheral wall of the positioning part is attached to the inner wall of the flexible bearing. When assembling, the cam pushes the guide sleeve downwards, so that the positioning part is withdrawn from the inner ring of the flexible bearing, and meanwhile, the cam is extruded into the flexible bearing from the upper part, so that the cam and the flexible bearing always keep coaxial lines in the process, the assembly requirement of the wave generator is met, the flexible bearing is prevented from generating secondary deformation, and the quality of products is further ensured.

Inventors

  • Cui Jiabo
  • LIU JIABAO
  • Shen Xutao

Assignees

  • 宁波博银谐波科技有限公司

Dates

Publication Date
20260508
Application Date
20250604

Claims (7)

  1. 1. A wave generator assembly tool of a harmonic reducer is characterized by comprising a press-fit base (1) and a guide shaft (2) vertically arranged on the press-fit base (1), wherein the guide shaft (2) comprises a first guide part (21) and a second guide part (22) which are sequentially arranged from top to bottom, the first guide part (21) is used for connecting a cam (3), the cam (3) can slide along the axial direction of the first guide part (21), a guide sleeve (4) is sleeved on the second guide part (22), the guide sleeve (4) can slide along the axial direction of the second guide part (22), a radially protruding positioning part (41) is arranged on the outer peripheral wall of the guide sleeve (4), the first guide part (21), the second guide part (22) and the positioning part (41) are coaxially arranged, the positioning part (41) is used for sleeving a flexible bearing (5), and the outer peripheral wall of the positioning part (41) is attached to the inner wall of the flexible bearing (5).
  2. 2. The assembly fixture for the wave generator of the harmonic reducer according to claim 1, wherein the height dimension from the top of the guide sleeve (4) to the bottom of the positioning part (41) is smaller than the thickness dimension of the flexible bearing (5).
  3. 3. The assembly fixture for the wave generator of the harmonic reducer of claim 1 is characterized in that an annular accommodating groove (11) which extends vertically downwards and is coaxial with the guide shaft (2) is formed in the press-fit base (1), and the annular accommodating groove (11) is used for accommodating the guide sleeve (4).
  4. 4. The assembly fixture for the wave generator of the harmonic reducer according to claim 3, wherein the height dimension of the guide sleeve (4) is the same as the depth dimension of the annular accommodating groove (11).
  5. 5. The assembly fixture for the wave generator of the harmonic reducer according to claim 3, wherein the guide shaft (2) is sleeved with a spring (6), one end of the spring (6) is connected with the guide sleeve (4), and the other end of the spring is connected with the inner bottom wall of the annular accommodating groove (11).
  6. 6. The assembly fixture for the wave generator of the harmonic reducer of claim 5, wherein an annular concave table (42) is arranged at the lower end of the inner peripheral wall of the guide sleeve (4), and one end of the spring (6) is connected in the annular concave table (42).
  7. 7. The assembly tooling for the wave generator of the harmonic reducer, which is disclosed in claim 1, is characterized by further comprising a pressing block (7), wherein a connecting part (71) is arranged at the upper end of the pressing block (7) and is used for being connected by a press head, a groove (72) with an open end at the bottom is arranged at the lower end of the pressing block (7), the groove (72) is used for accommodating the upper end of the guide shaft (2), and when the pressing block (7) is driven by the press head to press down, the cam (3) is pressed into the flexible bearing (5), and the top of the guide shaft (2) is propped against the inner top wall of the groove (72).

Description

Wave generator assembly fixture of harmonic reducer ware Technical Field The utility model relates to the technical field of wave generator processing, in particular to a wave generator assembly fixture of a harmonic reducer. Background With the rapid development of domestic humanoid robots in recent years, the demand of harmonic reducers in the market is increasing, which is also a challenge for manufacturers of harmonic reducers. The principle of the harmonic reducer is that the relative motion of the rigid gear, the flexible gear and the wave generator is utilized, the flexible gear generates controllable elastic deformation by rotating an elliptical cam in the wave generator in the flexible gear so as to transmit motion and power, and the harmonic reducer has the advantages of high transmission precision, high bearing capacity, small volume, stable transmission and the like. Because the harmonic reducer belongs to accurate parts, the problem of poor consistency of assembly precision exists for the assembly of the harmonic reducer in a large batch, and the problem is particularly embodied in the assembly of the wave generator. The wave generator of the harmonic reducer consists of a cam and a flexible bearing, and the inner ring of the flexible bearing is matched with the elliptic cylindrical surface of the cam. The current mainstream wave generator assembly method is that a flexible bearing is placed in a specific deformation block, the inner ring of the flexible bearing is forced to deform in a mode of applying force to the outer ring of the flexible bearing, the inner ring is changed into an ellipse which is matched with a cam, and then the cam is forced to be pressed into the inner ring of the flexible bearing by external force. The obvious defect that this assembly method exists is probably because the attention of assembly personnel is not concentrated when assembling in batches, is pressing the cam into the major axis of advance cam major axis insufficiently aiming at flexible bearing inner race to can lead to the cam to slide into flexible bearing inner race in the impressing process, make flexible bearing produce secondary deformation, can lead to flexible bearing's inner and outer circle to produce wearing and tearing like this, thereby make harmonic reducer produce abnormal sound in the operation process, this can lead to flexible bearing's life-span reduction, causes economic loss. Disclosure of utility model The utility model aims to solve the technical problem of providing a wave generator assembly fixture of a harmonic reducer, which improves assembly precision so as to avoid secondary deformation of a flexible bearing. The technical scheme of the utility model is that a wave generator assembly fixture of a harmonic reducer is provided, wherein the wave generator assembly fixture comprises the following structures: The flexible bearing pressing device comprises a pressing base and a guide shaft vertically arranged on the pressing base, wherein the guide shaft comprises a first guide part and a second guide part which are sequentially arranged from top to bottom, the first guide part is used for connecting a cam, the cam can slide along the axial direction of the first guide part, a guide sleeve is sleeved on the second guide part and can slide along the axial direction of the second guide part, a radially protruding positioning part is arranged on the peripheral wall of the guide sleeve, the first guide part, the second guide part and the positioning part are coaxially arranged, the positioning part is used for sleeving a flexible bearing, and the peripheral wall of the positioning part is attached to the inner wall of the flexible bearing. After adopting above structure, the wave generator assembly fixture of the harmonic reducer has the following advantages compared with the prior art: When the press machine is used for assembling, the flexible bearing is firstly placed on the top of the press mounting base, the flexible bearing is sleeved on the positioning part of the guide sleeve, the flexible bearing and the positioning part are coaxial, then the first guide part passes through the central hole of the cam, the cam and the first guide part are coaxial, and in the process of driving the cam to press down, the cam and the flexible bearing are coaxial because the first guide part, the second guide part and the positioning part are coaxial. The cam pushes down the in-process, its lower terminal surface offsets with the up end of guide sleeve to push away guide sleeve downwards, make the locating part withdraw from flexible bearing's inner circle, the cam directly extrudees the inner circle that gets into flexible bearing from the top simultaneously, accomplishes one shot extrusion, and this in-process, cam and flexible bearing remain coaxial line throughout, accord with the assembly requirement of wave generator, avoid flexible bearing to produce secondary deformation, and then guarantee