CN211259536U - Novel split type gear device - Google Patents
Novel split type gear device Download PDFInfo
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- CN211259536U CN211259536U CN201922080764.7U CN201922080764U CN211259536U CN 211259536 U CN211259536 U CN 211259536U CN 201922080764 U CN201922080764 U CN 201922080764U CN 211259536 U CN211259536 U CN 211259536U
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- gear
- shaft sleeve
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- shaft
- shaft core
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Abstract
The utility model discloses a novel split type gear device, which comprises a gear part and a shaft sleeve part; the gear part comprises a gear and a shaft core, and the gear is fixedly connected to the upper surface of the shaft core; the shaft sleeve part comprises a shaft sleeve which is of a cylindrical structure, and the length of the shaft sleeve is equal to that of the shaft core; a through hole is formed in the central axis of the inner portion of the shaft sleeve, the inner portion of the through hole is divided into an upper transition area and a lower interference area, the transition area is in transition fit with the shaft core, and the interference area is in interference fit with the shaft core; the upper end face of the through hole is provided with an annular groove, and an annular coil is arranged in the groove; when the gear part is combined with the shaft sleeve part, the lower surface of the gear is attached to the upper surface of the shaft sleeve. Through the utility model discloses realize that gear and axle sleeve can divide into two independent individual independent processing, processing is convenient. And meanwhile, the integrated gear device has high strength and is not easy to separate.
Description
Technical Field
The utility model relates to a machine part field, concretely relates to novel split type gear device.
Background
In gear cutting operations, the gear arrangement of the cutting tool used is often an integral gear arrangement, i.e. the gear is integral with the sleeve. Because the working load of the gear device is a heavy load, in order that the gear device does not break under the working environment of the heavy load, the outer diameter of the bearing position is basically consistent with the outer diameter of the gear tooth part during gear design, so that the gear undercut or over-undercut phenomenon occurs due to the overlarge outer diameter of the gear during gear cutting, and the thickness of the tooth root of the cut gear becomes thin due to the phenomenon, the bending resistance of the gear is reduced, the overlap ratio is reduced, and the transmission stability is influenced. When the gear is assembled and used, the conditions of oil leakage and gear abrasion aggravation can occur, and the service life of the gear is seriously influenced. In order to solve the above problems, it is necessary to change an integrated gear into two independent parts for separate processing and then combining the two independent parts to form a split gear.
SUMMERY OF THE UTILITY MODEL
The utility model aims at designing a novel split type gear device, making it realize that gear and axle sleeve can divide into two independent individual independent processing, processing is convenient. And meanwhile, the integrated gear device has high strength and is not easy to separate.
In order to achieve the above object, the utility model provides a following technical scheme:
a novel split gear device comprises a gear part and a shaft sleeve part; the gear part comprises a gear and a shaft core, and the gear is fixedly connected to the upper surface of the shaft core; the shaft sleeve part comprises a shaft sleeve which is of a cylindrical structure, and the length of the shaft sleeve is equal to that of the shaft core; a through hole is formed in the central axis of the inner portion of the shaft sleeve, the inner portion of the through hole is divided into an upper transition area and a lower interference area, the transition area is in transition fit with the shaft core, and the interference area is in interference fit with the shaft core; the upper end face of the through hole is provided with an annular groove, and an annular coil is arranged in the groove; when the gear part is combined with the shaft sleeve part, the lower surface of the gear is attached to the upper surface of the shaft sleeve.
Furthermore, the coil is made of copper. Because copper has high fluidity, copper metal melted into liquid can fully flow into a narrow gap between the shaft core and the through hole when the gear part and the shaft sleeve part are combined and then are brazed and heated in a continuous sintering furnace.
Furthermore, the lower bottom surface of the groove is designed to be inclined and inclined to the through hole. So that the molten liquid copper flows to the through hole faster along the lower bottom surface of the inclined groove under the action of the gravity of the copper metal.
Further, the distribution ratio of the transition region to the interference region is 3: 1. when copper metal is used as the adhesive between the gear part and the shaft sleeve part, the range of the acting area for exerting the adhesive function is large enough, and the gear part and the shaft sleeve part are prevented from being separated in the using process.
Furthermore, a key position is arranged on the side edge of the shaft core, a key groove is formed in the inner side of the through hole, and the key position is matched with the key groove. The combined limiting function of the key position and the key groove is utilized to ensure that the shaft sleeve does not idle relative to the shaft core in the using process.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model discloses changing current integral type gear into split type gear, being about for original gear and axle sleeve to change into gear portion and the independent bipartite body of axle sleeve portion as an organic whole, effectively avoiding appearing the emergence of gear undercut or overcut phenomenon in carrying out the gear cutting operation, the gear quality that makes to cut out has obtained the guarantee.
Simultaneously, in the manufacturing process, place axle sleeve portion recess position on the fixing base up earlier, successively place coil, gear portion in the relevant position of axle sleeve portion, along with the conveying of conveyer belt, compress tightly axle sleeve portion and gear portion from the top through the pressure machine earlier, make its narrow and small clearance that flows into between axle core and the through-hole through the coil in the continuous sintering furnace heating melting recess again, act as the adhesive, make axle sleeve portion and gear portion difficult separation. The whole process does not need to additionally move the shaft sleeve part, so that automatic flow line production is realized, and the processing is convenient.
In order to improve the strength of the split gear, the lengths of the shaft core and the shaft sleeve are designed to be equal, so that the integrated gear device becomes an internal solid structure, and the solid structure can effectively improve the strength and the rigidity.
Meanwhile, in order to avoid the liquid metal after being heated and melted from flowing out to the outside from the bottom along the narrow gap between the through hole and the shaft core, the through hole is designed into an upper transition region and a lower interference region, and the interference fit between the lower interference region and the shaft core is utilized, so that no gap exists for the liquid metal to flow, and the liquid metal is prevented from flowing out to the outside from the bottom fundamentally.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a split view of the present invention;
FIG. 2 is a perspective view of the present invention;
fig. 3 is a partially enlarged view of a portion a of fig. 2 according to the present invention;
FIG. 4 is a second split view of the present invention;
the names of the components identified in the figures are as follows:
1. a gear portion; 101. a gear; 102. a shaft core; 103. key positions; 2. a boss portion; 201. a shaft sleeve; 202. a through hole; 203. a groove; 204. a keyway; 3. and a coil.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, only some embodiments, not all embodiments, of the present invention are described. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
The first embodiment is as follows:
as shown in fig. 1-3, a novel split gear device comprises a gear part 1 and a shaft sleeve part 2; the gear part 1 comprises a gear 101 and a shaft core 102, wherein the gear 101 is fixedly connected to the upper surface of the shaft core 102; the shaft sleeve part 2 comprises a shaft sleeve 201, the shaft sleeve 201 is of a cylindrical structure, and the length of the shaft sleeve 201 is equal to that of the shaft core 102; a through hole 202 is formed in the central axis of the inner portion of the shaft sleeve 201, the inner portion of the through hole 202 is divided into an upper transition area and a lower interference area, the transition area is in transition fit with the shaft core 102, and the interference area is in interference fit with the shaft core 102; the upper end surface of the through hole 202 is provided with an annular groove 203, and a circular coil 3 is arranged in the groove 203; when the gear portion 1 and the boss portion 2 are combined, the lower surface of the gear 101 is in contact with the upper surface of the boss 201.
The material of the coil 3 is copper. Because of the high fluidity of copper, when the gear portion 1 and the boss portion 2 are combined and brazed and heated in a continuous sintering furnace, copper metal melted into liquid can sufficiently flow into the narrow gap between the core 102 and the through hole 202.
The bottom surface of the groove 203 is designed to be inclined and inclined to the through hole 202. So that the molten copper metal flows to the through hole 202 along the lower bottom surface of the inclined groove 203 more quickly under its own weight.
The distribution ratio of the transition area to the interference area is 3: 1. when it is ensured that the copper metal can serve as an adhesive between the gear portion 1 and the boss portion 2, the range of the effective area for exerting the adhesive function is sufficiently large, and it is ensured that the gear portion 1 and the boss portion 2 are not separated during use.
The working principle of the first embodiment is as follows:
in the manufacturing process, place axle sleeve portion 2 recess 203 bit on the fixing base up earlier, successively place coil 3, gear portion 1 in the relevant position of axle sleeve portion 2, along with the conveying of conveyer belt, compress tightly axle sleeve portion 2 and gear portion 1 from the top through the pressure-fit machine earlier, heat coil 3 in the melting recess 203 through continuous fritting furnace again and make its flow in the narrow and small clearance between axle core 102 and the through-hole 202, act as the adhesive, make axle sleeve portion 2 and gear portion 1 difficult separation. The whole process does not need to additionally move the shaft sleeve part 2, automatic flow line production is realized, and the processing is convenient.
In order to improve the strength of the split gear 101, the lengths of the shaft core 102 and the shaft sleeve 201 are designed to be equal, so that the integrated gear device becomes an internal solid structure, and the solid structure can effectively improve the strength and the rigidity.
Meanwhile, in order to avoid the heated and melted liquid metal from flowing out to the outside from the bottom along the narrow gap between the through hole 202 and the shaft core 102, the through hole 202 is designed into an upper transition region and a lower interference region, and the interference fit between the lower interference region and the shaft core 102 is utilized, so that no gap exists for the liquid metal to flow, and the liquid metal is prevented from flowing out to the outside from the bottom fundamentally.
Example two:
as shown in fig. 4, on the basis of the first embodiment, the key 103 is arranged on the side of the shaft core 102, the key slot 204 is arranged on the inner side of the through hole 202, and the key 103 is matched with the key slot 204. The combined limiting function of the key positions 103 and the key slots 204 is utilized to ensure that the shaft sleeve 201 does not idle relative to the shaft core 102 in the using process.
Claims (5)
1. The utility model provides a novel split type gear device which characterized in that: comprises a gear part and a shaft sleeve part; the gear part comprises a gear and a shaft core, and the gear is fixedly connected to the upper surface of the shaft core; the shaft sleeve part comprises a shaft sleeve which is of a cylindrical structure, and the length of the shaft sleeve is equal to that of the shaft core; a through hole is formed in the central axis of the inner portion of the shaft sleeve, the inner portion of the through hole is divided into an upper transition area and a lower interference area, the transition area is in transition fit with the shaft core, and the interference area is in interference fit with the shaft core; the upper end face of the through hole is provided with an annular groove, and an annular coil is arranged in the groove; when the gear part is combined with the shaft sleeve part, the lower surface of the gear is attached to the upper surface of the shaft sleeve.
2. The novel split gear device of claim 1, wherein: the coil is made of copper.
3. The novel split gear device of claim 1, wherein: the lower bottom surface of the groove is designed to be inclined and inclined to the through hole.
4. The novel split gear device of claim 1, wherein: the distribution ratio of the transition area to the interference area is 3: 1.
5. the novel split gear device of claim 1, wherein: the side of the shaft core is provided with a key position, the inner side of the through hole is provided with a key slot, and the key position is matched with the key slot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922080764.7U CN211259536U (en) | 2019-11-27 | 2019-11-27 | Novel split type gear device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922080764.7U CN211259536U (en) | 2019-11-27 | 2019-11-27 | Novel split type gear device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211259536U true CN211259536U (en) | 2020-08-14 |
Family
ID=71988432
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922080764.7U Active CN211259536U (en) | 2019-11-27 | 2019-11-27 | Novel split type gear device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211259536U (en) |
-
2019
- 2019-11-27 CN CN201922080764.7U patent/CN211259536U/en active Active
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