CN116792464A - Flexible meshing type gear device and manufacturing method - Google Patents
Flexible meshing type gear device and manufacturing method Download PDFInfo
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- CN116792464A CN116792464A CN202310615379.6A CN202310615379A CN116792464A CN 116792464 A CN116792464 A CN 116792464A CN 202310615379 A CN202310615379 A CN 202310615379A CN 116792464 A CN116792464 A CN 116792464A
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 23
- 239000011248 coating agent Substances 0.000 claims abstract description 45
- 238000000576 coating method Methods 0.000 claims abstract description 45
- 230000002093 peripheral effect Effects 0.000 claims abstract description 25
- 238000010438 heat treatment Methods 0.000 claims description 27
- 239000000463 material Substances 0.000 claims description 15
- 238000005096 rolling process Methods 0.000 claims description 12
- 239000011247 coating layer Substances 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 238000005259 measurement Methods 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 239000010410 layer Substances 0.000 claims description 5
- 238000005452 bending Methods 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 230000002159 abnormal effect Effects 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
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Abstract
The invention discloses a flexible meshing type gear device and a manufacturing method thereof, and relates to the technical field of flexible meshing type gears, wherein the flexible meshing type gear device comprises an inner gear and an outer gear, and the outer gear is meshed with the inner gear; the flex engagement gear device comprises a vibration starting body and a vibration starting body shaft, wherein the vibration starting body enables the external gear to flex and deform, the vibration starting body shaft is arranged between the outer peripheral surface of the vibration starting body and the inner peripheral surface of the external gear, the vibration starting body shaft is provided with an outer ring, and the minimum inner peripheral length of the external gear is larger than the maximum outer peripheral length of the outer ring. The present invention can reduce the backlash between the external gear and the internal gear by coating the coating portion between the tooth surfaces, thereby achieving a flex-meshing gear device with a small backlash, and can suppress the fretting wear between the external gear and the outer ring of the oscillating body bearing by coating the inner peripheral surface of the external gear.
Description
Technical Field
The invention relates to the technical field of flexible meshing gears, in particular to a flexible meshing gear device and a manufacturing method thereof.
Background
In a flexible meshing gear device including an external gear which is deformed by deflection of an oscillating body and an internal gear which meshes with the external gear, in general, a bearing (oscillating body bearing) is arranged between the external gear and the oscillating body, an outer ring of the bearing is fitted to an inner periphery of the external gear by interference fit or the like, and in the flexible meshing gear device, the outer ring of the bearing and the external gear are deformed by rotation of the oscillating body, whereby a part of the external gear is meshed with the internal gear, and a deceleration operation is performed. The following problems exist in the prior art:
since in the flex-meshing gear device, when the external gear flexes and deforms, sliding is sometimes generated between the outer ring and the external gear based on the mechanical action, so that abnormal wear occurs at the fitting surface, the abnormal wear causes the following problems: the temperature of the portion is raised, and the abrasion powder is increased, and if abnormal abrasion progresses, a problem arises in that the meshing portion of the gear becomes loose.
Disclosure of Invention
The present invention provides a flexible meshing gear device and a manufacturing method thereof, which solve the above-mentioned problems in the prior art.
In order to solve the technical problems, the invention adopts the following technical scheme:
a flexible meshing gear device and a manufacturing method thereof comprise a flexible meshing gear device and a retainer, wherein the retainer comprises rolling bodies, the flexible meshing gear device comprises an inner gear and an outer gear, and the outer gear is meshed with the inner gear; the deflection meshing type gear device comprises a vibration starting body and a vibration starting body shaft, wherein the vibration starting body enables the outer gear to deflect and deform, the vibration starting body shaft is arranged between the outer circumferential surface of the vibration starting body and the inner circumferential surface of the outer gear, the vibration starting body shaft is provided with an outer ring, the minimum inner circumferential length of the outer gear is larger than the maximum outer circumferential length of the outer ring, the outer gear comprises an outer gear inner ring, a coating I is fixedly coated on the outer ring of the inner wall of the outer gear, a coating II is fixedly coated on the outer wall of the outer ring of the outer gear, and steel balls are lapped between the outer wall of the coating I and the outer wall of the coating II.
The technical scheme of the invention is further improved as follows: and the outer wall of the cam of the external gear is fixedly coated with a wear-resistant layer.
The technical scheme of the invention is further improved as follows: the manufacturing method of the deflection meshing gear comprises the following steps:
step one: a groove forming step;
step two: a through hole forming step;
step three: measuring the size;
step four: processing a cam;
step five: a coating step;
step six: and (3) a coating removal procedure.
The technical scheme of the invention is further improved as follows: the first step comprises the following steps:
a1: a first heat treatment step of performing a first heat treatment on the formation material while leaving a wall thickness at a position radially inward of a position where the internal teeth are formed;
a2: and a second heat treatment step of performing a second heat treatment on the groove of the forming material for forming the inner ring rolling surface in a state where a wall thickness is left at a position radially inward of a position at which the inner teeth are formed after the first heat treatment step, and an inner peripheral surface forming step of removing a position radially inward of a position at which the inner teeth are formed after the second heat treatment step.
The technical scheme of the invention is further improved as follows: the second step comprises the following steps:
b1: forming a through hole in a position of the forming material radially inward of a position of the forming material where the internal teeth are formed, and performing a second heat treatment on the forming material in which the through hole is formed in a second heat treatment step;
b2: in the through-hole forming step, a through-hole having a constant inner diameter in the axial direction is formed, and the manufacturing method further includes an adjacent inner peripheral surface forming step of forming an adjacent inner peripheral surface having an inner diameter larger than the inner diameter of the internal teeth at a portion adjacent to the internal teeth in the axial direction after the second heat treatment step.
The technical scheme of the invention is further improved as follows: the third step comprises the following steps:
c1: measuring the size of an internal gear, wherein the measuring part of the internal gear is a rod diameter;
c2: measuring the size of an external gear, wherein the measuring part of the external gear is a rod-crossing diameter;
and C3: the dimensions of the bearing are measured.
The technical scheme of the invention is further improved as follows: the fourth step comprises the following steps:
d1: the elliptical cam is arranged on the radial inner side of the bearing and used for bending the external gear into a non-circular shape, and when the elliptical cam is processed, the elliptical cam is processed in a mode that the meshing position between the internal gear and the external gear is fixed based on the measurement results of the internal gear, the external gear and the bearing;
d2: the major axis dimension of the elliptical cam is determined based on the measurement result, and the working dimension of the elliptical cam is set in such a manner that the perimeter of the elliptical cam is not changed.
The technical scheme of the invention is further improved as follows: the fifth step comprises the following steps: coating and assembling the outer circumferential surface and the inner circumferential surface of the outer ring of the starting body bearing, assembling a plurality of parts including the starting body bearing with the coating on the outer ring to form a flexible meshing gear device, coating the first coating and the second coating on the inner wall of the outer gear, and coating the wear-resistant coating on the outer gear cam;
the technical scheme of the invention is further improved as follows: step six includes removing the coating on the rolling surface of the outer race by operating the assembled flex-mesh gear device for a prescribed time.
By adopting the technical scheme, compared with the prior art, the invention has the following technical progress:
1. the invention provides a deflection meshing type gear device, which adopts the cooperation of an external gear, a first coating layer, a second coating layer and steel balls, wherein the inner steel balls are improved by contact with the first coating layer and the second coating layer when the external gear rotates, and the tightness between the external gear and the external gear is improved, so that abnormal abrasion between the external gear and an outer ring is inhibited.
2. The invention provides a method for manufacturing a flexible meshing gear, which adopts the combination of the steps of measuring the size, processing a cam and the like, and can restrain the deviation of the performance of a speed reducer caused by the tooth profile deflection when adjusting the proper meshing position, thereby improving the durability of the tooth surface.
3. The invention provides a method for manufacturing a flexible meshing gear, which adopts the coating procedure to enable a coating part to exist between tooth surfaces, thereby reducing the tooth gap between an external gear and an internal gear, realizing a flexible meshing gear device with small idle stroke, and inhibiting fretting wear between the external gear and an outer ring of a vibration starting body bearing through the coating of the inner peripheral surface of the external gear.
Drawings
FIG. 1 is a schematic overall cross-sectional view of the structure of the present invention;
FIG. 2 is a schematic view of an external gear of the structure of the present invention;
FIG. 3 is a schematic view of the present invention with the outer gear and the oscillating body bearing configured in a perfect circle;
fig. 4 is a perspective view of an external gear cam of the structure of the present invention;
FIG. 5 is a schematic flow chart of the manufacturing method of the present invention.
In the figure: 1. a flex-engagement gear device; 11. an internal gear; 12. an external gear; 121. coating I; 122. steel balls; 123. a second coating layer; 124. an outer gear inner ring; 125. a wear-resistant layer; 13. an outer ring; 2. a rolling element; 3. a retainer; 4. a vibrator shaft; 41. a vibration starting body.
Detailed Description
The invention is further illustrated by the following examples:
example 1
As shown in fig. 1 to 5, the present invention provides a flexible meshing gear device and a manufacturing method thereof, comprising a flexible meshing gear device 1 and a retainer 3, wherein the retainer 3 comprises a rolling element 2, the flexible meshing gear device 1 comprises an inner gear 11, an outer gear 12, the outer gear 12 meshes with the inner gear 11, the flexible meshing gear device 1 comprises a vibration starting body 41 and a vibration starting body shaft 4, the vibration starting body 41 deflects the outer gear 12, the vibration starting body shaft 4 is configured between the outer circumferential surface of the vibration starting body 41 and the inner circumferential surface of the outer gear 12, the vibration starting body shaft 4 is provided with an outer ring 13, the minimum inner circumferential length of the outer gear 12 is greater than the maximum outer circumferential length of the outer ring 13, the outer gear 12 comprises an outer gear inner ring 124, the inner wall outer ring of the outer gear 12 is fixedly coated with a coating layer one 121, the outer wall of the outer gear inner ring 124 is fixedly coated with a coating layer two 123, and steel balls 122 are lapped between the coating one 121 and the outer wall of the coating two 123.
In the present embodiment, one of the two internal gears 11 meshes with a tooth portion on one end side of the center in the axial direction of the external gear 12, and the other internal gear 11 meshes with a tooth portion on the other end side of the center in the axial direction of the external gear 12, the internal gear 11 is constituted by providing internal teeth on a corresponding portion of an inner peripheral portion of an internal gear member, and a maximum circumferential length of an outer peripheral surface of the outer ring 13 is shorter than a minimum circumferential length of an inner peripheral surface of the external gear 12, where the maximum circumferential length of the outer peripheral surface of the outer ring 13 is compared because: for example, in the case where the outer peripheral edge portion of the outer ring 13 is formed with a chamfer, the circumferential length of the portion of the outer ring 13 that contacts the outer gear 12 is set as a comparison target, and the circumferential length of the chamfer portion is not set as a comparison target, and similarly, the smallest circumferential length of the inner circumferential surface of the outer gear 12 is compared because: for example, in the case where a chamfer or the like is formed on the inner peripheral edge portion of the external gear 12, the circumferential length of the portion of the external gear 12 in contact with the outer ring 13 is set as a comparison target, and the circumferential length of the chamfer portion is not set as a comparison target, the vibration starting body shaft 4 is disposed between the outer peripheral surface of the vibration starting body 41 and the inner peripheral surface of the external gear 12, and the vibration starting body shaft 4 has a plurality of rolling bodies 2, the outer ring 13, which are flexible cylindrical metal members, and the cage 3, which holds the positions in the axial direction and the intervals in the circumferential direction of the plurality of rolling bodies 2.
Example 2
As shown in fig. 1-5, on the basis of embodiment 1, the present invention provides a technical solution: preferably, the outer cam wall of the outer gear 12 is fixedly coated with a wear layer 125.
In the present embodiment, the wear of the external gear 12 is reduced by coating the wear-resistant layer 125 on the cam of the external gear 12, thereby reducing the backlash.
Example 3
As shown in fig. 1-5, on the basis of embodiment 1, the present invention provides a technical solution: preferably, the method for manufacturing the flexible meshing gear includes the steps of:
step one: a groove forming step;
step two: a through hole forming step;
step three: measuring the size;
step four: processing a cam;
step five: a coating step;
step six: and (3) a coating removal procedure.
Example 4
As shown in fig. 1-5, on the basis of embodiment 1, the present invention provides a technical solution: preferably, the first step includes the steps of:
a1: a first heat treatment step of performing a first heat treatment on the formation material while leaving a wall thickness at a position radially inward of a position where the internal teeth are formed;
a2: a second heat treatment step of performing a second heat treatment on the groove for forming the inner ring rolling surface of the forming material in a state where a wall thickness is left on the inner side in the radial direction than the position where the inner teeth are formed after the first heat treatment step, and an inner peripheral surface forming step of removing the position on the inner side in the radial direction than the position where the inner teeth are formed after the second heat treatment step;
the second step comprises the following steps:
b1: forming a through hole in a position of the forming material radially inward of a position of the forming material where the internal teeth are formed, and performing a second heat treatment on the forming material in which the through hole is formed in a second heat treatment step;
b2: in the through-hole forming step, a through-hole having an inner diameter that is constant in the axial direction is formed, and the manufacturing method further includes an adjacent inner peripheral surface forming step of forming an adjacent inner peripheral surface having an inner diameter that is larger than an inner diameter of the internal teeth at a portion adjacent to the internal teeth in the axial direction after the second heat treatment step;
the third step comprises the following steps:
c1: measuring the size of an internal gear, wherein the measuring part of the internal gear is a rod diameter;
c2: measuring the size of an external gear, wherein the measuring part of the external gear is a rod-crossing diameter;
and C3: measuring the size of the bearing;
step four comprises the following steps:
d1: the elliptical cam is arranged on the radial inner side of the bearing and used for bending the external gear into a non-circular shape, and when the elliptical cam is processed, the elliptical cam is processed in a mode that the meshing position between the internal gear and the external gear is fixed based on the measurement results of the internal gear, the external gear and the bearing;
d2: determining a major axis dimension of the elliptical cam based on the measurement result, and setting a processing dimension of the elliptical cam in such a manner that a circumference of the elliptical cam is not changed;
step five comprises the following steps: coating and assembling the outer circumferential surface and the inner circumferential surface of the outer ring of the starting body bearing, assembling a plurality of parts including the starting body bearing with the coating on the outer ring to form a flexible meshing gear device, coating the first coating and the second coating on the inner wall of the outer gear, and coating the wear-resistant coating on the outer gear cam;
step six includes removing the coating on the rolling surface of the outer race by operating the assembled flex-mesh gear device for a prescribed time.
The foregoing invention has been generally described in great detail, but it will be apparent to those skilled in the art that modifications and improvements can be made thereto. Accordingly, it is intended to cover modifications or improvements within the spirit of the inventive concepts.
Claims (9)
1. A flex engagement gear device comprising a flex engagement gear device (1), a holder (3), characterized in that: the retainer (3) comprises rolling bodies (2), the flexible meshing type gear device (1) comprises an inner gear (11) and an outer gear (12), the outer gear (12) is meshed with the inner gear (11), the flexible meshing type gear device (1) comprises a vibration starting body (41) and a vibration starting body shaft (4), the vibration starting body (41) enables the outer gear (12) to flex and deform, the vibration starting body shaft (4) is arranged between the outer circumferential surface of the vibration starting body (41) and the inner circumferential surface of the outer gear (12), the vibration starting body shaft (4) is provided with an outer ring (13), the minimum inner circumferential length of the outer gear (12) is larger than the maximum outer circumferential length of the outer ring (13), the outer gear (12) comprises an inner ring (124), a coating layer I (121) is fixedly coated on the inner wall of the outer ring (12), a coating layer II (123) is fixedly coated on the outer wall of the inner ring (124), and a steel ball (122) is lapped between the coating I (121) and the outer wall of the coating II (123).
2. A flex engagement gear assembly as defined in claim 1 wherein: and the outer wall of the cam of the external gear (12) is fixedly coated with a wear-resistant layer (125).
3. A method of manufacturing a flex-mesh gear, comprising: the manufacturing method of the deflection meshing gear comprises the following steps:
step one: a groove forming step;
step two: a through hole forming step;
step three: measuring the size;
step four: processing a cam;
step five: a coating step;
step six: and (3) a coating removal procedure.
4. A method of manufacturing a flex spline gear according to claim 3, characterized in that: the first step comprises the following steps:
a1: a first heat treatment step of performing a first heat treatment on the formation material while leaving a wall thickness at a position radially inward of a position where the internal teeth are formed;
a2: and a second heat treatment step of performing a second heat treatment on the groove of the forming material for forming the inner ring rolling surface in a state where a wall thickness is left at a position radially inward of a position at which the inner teeth are formed after the first heat treatment step, and an inner peripheral surface forming step of removing a position radially inward of a position at which the inner teeth are formed after the second heat treatment step.
5. A method of manufacturing a flex spline gear according to claim 3, characterized in that: the second step comprises the following steps:
b1: forming a through hole in a position of the forming material radially inward of a position of the forming material where the internal teeth are formed, and performing a second heat treatment on the forming material in which the through hole is formed in a second heat treatment step;
b2: in the through-hole forming step, a through-hole having a constant inner diameter in the axial direction is formed, and the manufacturing method further includes an adjacent inner peripheral surface forming step of forming an adjacent inner peripheral surface having an inner diameter larger than the inner diameter of the internal teeth at a portion adjacent to the internal teeth in the axial direction after the second heat treatment step.
6. A method of manufacturing a flex spline gear according to claim 3, characterized in that: the third step comprises the following steps:
c1: measuring the size of an internal gear, wherein the measuring part of the internal gear is a rod diameter;
c2: measuring the size of an external gear, wherein the measuring part of the external gear is a rod-crossing diameter;
and C3: the dimensions of the bearing are measured.
7. A method of manufacturing a flex spline gear according to claim 3, characterized in that: the fourth step comprises the following steps:
d1: the elliptical cam is arranged on the radial inner side of the bearing and used for bending the external gear into a non-circular shape, and when the elliptical cam is processed, the elliptical cam is processed in a mode that the meshing position between the internal gear and the external gear is fixed based on the measurement results of the internal gear, the external gear and the bearing;
d2: the major axis dimension of the elliptical cam is determined based on the measurement result, and the working dimension of the elliptical cam is set in such a manner that the perimeter of the elliptical cam is not changed.
8. A method of manufacturing a flex spline gear according to claim 3, characterized in that: the fifth step comprises the following steps: and a coating and assembling step of coating at least the outer peripheral surface and the inner peripheral surface of the outer ring of the oscillating body bearing, wherein a plurality of parts including the oscillating body bearing with the coating applied on the outer ring are assembled to form a flexible meshing gear device, and simultaneously, a coating I and a coating II are coated on the inner wall of the outer gear, and a wear-resistant coating is coated on the outer gear cam.
9. A method of manufacturing a flex spline gear according to claim 3, characterized in that: step six includes removing the coating on the rolling surface of the outer race by operating the assembled flex-mesh gear device for a prescribed time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310615379.6A CN116792464A (en) | 2023-05-29 | 2023-05-29 | Flexible meshing type gear device and manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310615379.6A CN116792464A (en) | 2023-05-29 | 2023-05-29 | Flexible meshing type gear device and manufacturing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116792464A true CN116792464A (en) | 2023-09-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310615379.6A Pending CN116792464A (en) | 2023-05-29 | 2023-05-29 | Flexible meshing type gear device and manufacturing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116792464A (en) |
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2023
- 2023-05-29 CN CN202310615379.6A patent/CN116792464A/en active Pending
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