CN204628440U - Improve the harmonic wave speed reducing machine structure in life-span - Google Patents
Improve the harmonic wave speed reducing machine structure in life-span Download PDFInfo
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- CN204628440U CN204628440U CN201520221492.7U CN201520221492U CN204628440U CN 204628440 U CN204628440 U CN 204628440U CN 201520221492 U CN201520221492 U CN 201520221492U CN 204628440 U CN204628440 U CN 204628440U
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- flexbile gear
- speed reducing
- harmonic wave
- reducing machine
- wave speed
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Abstract
The utility model discloses a kind of harmonic wave speed reducing machine structure improving the life-span, comprise firm wheel, flexbile gear, wave-generator, flexbile gear is carnival hat type or cup type, the relation between the radius of curvature R and flexbile gear height H of cup type flexbile gear crooked position: 0.4H≤R≤0.7H; Relation between the radius of curvature R and flexbile gear height H of carnival hat type flexbile gear crooked position: 0.4H≤R≤0.7H.The utility model is rational in infrastructure, by improving the radius of curvature increasing flexbile gear crooked position (A position) and external tooth lower end part (B position), makes it have higher load capacity and fatigue resistance, thus improves the working life of harmonic wave speed reducing machine.
Description
Technical field
The utility model relates to a kind of harmonic wave speed reducing machine structure.
Background technique
It is high that harmonic wave speed reducing machine has precision, and volume is little, the feature that bearing torque is high, is widely used in industrial robot field.Fig. 1 has the harmonic wave speed reducing machine structure diagram of cup type flexbile gear.This harmonic wave speed reducing machine has three basic elements of character, has namely just taken turns 1, flexbile gear 2 and wave-generator 3.Flexbile gear 2 is bent to ellipse by wave-generator 3, and the external tooth of flexbile gear 2 engages with the internal tooth of just taking turns 1 at the two-end part of oval long axis direction.Fig. 2 is harmonic wave speed reducing machine gear engagement states schematic diagram.Fig. 3 is the harmonic wave speed reducing machine structure diagram with carnival hat type flexbile gear.
The failure mode of harmonic wave speed reducing machine more than 80% is flexbile gear crooked position (the A position of Fig. 1 and Fig. 3) torsional deformation.Because the wall thickness of flexbile gear is no more than 0.5mm, in A position be nearly 90 degree and bend, so when harmonic wave speed reducing machine bears overload or impact, this part is distorted distortion, causes harmonic wave speed reducing machine to lose efficacy.
In addition, also in 90 degree of shapes, there is shearing stress when transmitting torque, cause moment of torsion transmission efficiency to decline in flexbile gear external tooth lower end part (the B position of Fig. 1 and Fig. 3) joint.Meanwhile, flexbile gear external tooth lower end part fatigue resistance declines, and causes speed reducer service life reduction.
Summary of the invention
The purpose of this utility model is to provide a kind of rational in infrastructure, and load capacity and the fatigue resistance of flexbile gear are high, the harmonic wave speed reducing machine structure in the raising life-span of harmonic wave speed reducing machine long service life.
Technical solution of the present utility model is:
Improve the harmonic wave speed reducing machine structure in life-span, comprise firm wheel, flexbile gear, wave-generator, flexbile gear is carnival hat type or cup type, it is characterized in that: the relation between the radius of curvature R and flexbile gear height H of cup type flexbile gear crooked position: 0.4H≤R≤0.7H;
Relation between the radius of curvature R and flexbile gear height H of carnival hat type flexbile gear crooked position: 0.4H≤R≤0.7H.
Relation between rate radius r in the external tooth lower end part joint of cup type or carnival hat type flexbile gear and the outer tine length d of flexbile gear: 0.8d≤r≤1.2d.
The utility model is rational in infrastructure, by improving the radius of curvature increasing flexbile gear crooked position (A position) and external tooth lower end part (B position), makes it have higher load capacity and fatigue resistance, thus improves the working life of harmonic wave speed reducing machine.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is described in further detail.
Fig. 1 is the harmonic reducing mechanism schematic diagram of cup type flexbile gear in prior art.
Fig. 2 is harmonic wave speed reducing machine gear engagement states schematic diagram in prior art.
Fig. 3 is the harmonic reducing mechanism schematic diagram of carnival hat type flexbile gear in prior art.
Fig. 4 is the harmonic reducing mechanism schematic diagram of the utility model cup type flexbile gear.
Fig. 5 is the harmonic reducing mechanism schematic diagram of the utility model carnival hat type flexbile gear.
Fig. 6 is the utility model flexbile gear external tooth lower end part structural representation.
Embodiment
Embodiment 1:
A kind of harmonic wave speed reducing machine structure improving the life-span, comprise just wheel 4, flexbile gear 5, wave-generator 6, flexbile gear is cup type, and being significantly increases bending radius of curvature, the relation between its radius of curvature R and flexbile gear height H: 0.4H≤R≤0.7H at the crooked position (A position) of cup type flexbile gear.
The radius of curvature of joint is increased, the relation between its radius of curvature r and the outer tine length d of flexbile gear: 0.8d≤r≤1.2d at the external tooth lower end part (B position) of cup type flexbile gear.
Embodiment 2:
A kind of harmonic wave speed reducing machine structure improving the life-span, comprise just wheel 7, flexbile gear 8, wave-generator 9, flexbile gear is carnival hat type, and being significantly increases bending radius of curvature, the relation between its radius of curvature R and flexbile gear height H: 0.4H≤R≤0.7H at the crooked position (A position) of carnival hat type flexbile gear.
The radius of curvature of joint is increased, the relation between its radius of curvature r and the outer tine length d of flexbile gear: 0.8d≤r≤1.2d at the external tooth lower end part (B position) of carnival hat type flexbile gear.
Claims (2)
1. improve the harmonic wave speed reducing machine structure in life-span, comprise firm wheel, flexbile gear, wave-generator, flexbile gear is carnival hat type or cup type, it is characterized in that: the relation between the radius of curvature R and flexbile gear height H of cup type flexbile gear crooked position: 0.4H≤R≤0.7H;
Relation between the radius of curvature R and flexbile gear height H of carnival hat type flexbile gear crooked position: 0.4H≤R≤0.7H.
2. the harmonic wave speed reducing machine structure in raising life-span according to claim 1, is characterized in that: the relation between the rate radius r in the external tooth lower end part joint of cup type or carnival hat type flexbile gear and the outer tine length d of flexbile gear: 0.8d≤r≤1.2d.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520221492.7U CN204628440U (en) | 2015-04-14 | 2015-04-14 | Improve the harmonic wave speed reducing machine structure in life-span |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520221492.7U CN204628440U (en) | 2015-04-14 | 2015-04-14 | Improve the harmonic wave speed reducing machine structure in life-span |
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| CN204628440U true CN204628440U (en) | 2015-09-09 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104747660A (en) * | 2015-04-14 | 2015-07-01 | 上海鑫君传动科技有限公司 | Harmonic reducer structure for extending service life |
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2015
- 2015-04-14 CN CN201520221492.7U patent/CN204628440U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104747660A (en) * | 2015-04-14 | 2015-07-01 | 上海鑫君传动科技有限公司 | Harmonic reducer structure for extending service life |
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