CN214304822U - Transmission shaft with knurl - Google Patents
Transmission shaft with knurl Download PDFInfo
- Publication number
- CN214304822U CN214304822U CN202022193698.7U CN202022193698U CN214304822U CN 214304822 U CN214304822 U CN 214304822U CN 202022193698 U CN202022193698 U CN 202022193698U CN 214304822 U CN214304822 U CN 214304822U
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- shaft
- connecting shaft
- spline
- equal
- shoulder
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Abstract
The utility model discloses a transmission shaft with knurls, which comprises a first connecting shaft, a second connecting shaft, a third connecting shaft, a fourth connecting shaft, a shaft shoulder, a spline shaft, a fifth connecting shaft, a sixth connecting shaft and a seventh connecting shaft which are coaxially arranged in sequence; the shaft diameters of the first connecting shaft, the second connecting shaft, the third connecting shaft, the fourth connecting shaft, the shaft shoulder, the spline shaft and the fifth connecting shaft are gradually increased, and the shaft diameters of the fifth connecting shaft, the sixth connecting shaft and the seventh connecting shaft are gradually decreased; the spline shaft comprises a flat shaft part and a spline which is arranged on the flat shaft part in a protruding mode, the minimum distance from the spline to the shaft shoulder is larger than the minimum distance from the spline to the fifth connecting shaft, and the length of the spline shaft is larger than that of the fifth connecting shaft. The transmission shaft with the knurls has high connection strength and torque resistance, can prevent the transmission shaft from moving during working, and is flexible in connection mode and long in service life.
Description
Technical Field
The utility model belongs to the technical field of the axle technique and specifically relates to a transmission shaft of band edge knurling is related to.
Background
With the rapid development of modern industrial technologies, the requirements for transmission shafts are higher and higher, and the transmission shafts used generally need to bear higher friction force, and meanwhile, the transmission shafts need to have high-strength structures, torque resistance and impact resistance. The existing transmission shaft with knurls is often used in a complicated structure for matching with other parts such as bearings, sleeves or connecting gears, the unreasonable structure design causes the reduction of the transmission efficiency of the transmission shaft, and the transmission shaft cannot run safely and reliably for a long time due to uneven stress. There is a need for improvement.
SUMMERY OF THE UTILITY MODEL
To the not enough of above-mentioned prior art existence, the utility model aims at providing a take transmission shaft of annular knurl.
In order to realize the purpose, the utility model discloses the technical scheme who adopts is: a transmission shaft with knurls comprises a first connecting shaft, a second connecting shaft, a third connecting shaft, a fourth connecting shaft, a shaft shoulder, a spline shaft, a fifth connecting shaft, a sixth connecting shaft and a seventh connecting shaft which are coaxially arranged in sequence; the shaft diameters of the first connecting shaft, the second connecting shaft, the third connecting shaft, the fourth connecting shaft, the shaft shoulder, the spline shaft and the fifth connecting shaft are gradually increased, and the shaft diameters of the fifth connecting shaft, the sixth connecting shaft and the seventh connecting shaft are gradually decreased; the spline shaft comprises a flat shaft part and a spline which is arranged on the flat shaft part in a protruding mode, the minimum distance from the spline to the shaft shoulder is larger than the minimum distance from the spline to the fifth connecting shaft, and the length of the spline shaft is larger than that of the fifth connecting shaft. The transmission shaft with the knurls has high connection strength and torque resistance, can prevent the transmission shaft from moving during working, and is flexible in connection mode and long in service life.
Optionally: the shaft shoulder includes a first relief groove connected to the fourth connecting shaft, and the spline shaft includes a second relief groove connected to the shaft shoulder; the width of the first tool withdrawal groove is smaller than the length of the shaft shoulder, and the length of the shaft shoulder is smaller than the width of the second tool withdrawal groove.
Optionally: the shaft shoulder also comprises a first chamfer angle connected with the second tool withdrawal groove, the angle of the first chamfer angle is A, and A is more than or equal to 30 degrees and less than or equal to 40 degrees.
Optionally: the spline shaft further comprises a second chamfer angle connected to the second tool withdrawal groove, the angle of the second chamfer angle is B, and B is more than or equal to 10 degrees and less than or equal to 20 degrees.
Optionally: the length of the spline is C, wherein C is more than or equal to 9 mm and less than or equal to 10 mm.
Optionally: the fifth connecting shaft comprises at least two opposite edge cutting surfaces, the two edge cutting surfaces are connected to the spline shaft and extend towards the fifth connecting shaft, and the length of the two edge cutting surfaces is smaller than that of the fifth connecting shaft.
Optionally: the maximum diameter of the spline shaft is larger than the distance between the two oppositely arranged chamfered surfaces.
Optionally: the first connecting shaft comprises a first threaded hole, the seventh connecting shaft comprises a second threaded hole which is coaxially arranged, and the second threaded hole is coaxial with the first threaded hole.
Optionally: the depth of the first threaded hole is D, wherein D is more than or equal to 6 mm and less than or equal to 8 mm.
Optionally: the ratio of the sum of the lengths of the sixth connecting shaft and the seventh connecting shaft to the total length of the transmission shaft is E, wherein E is more than or equal to 0.4 and less than or equal to 0.6.
After the structure is adopted, compared with the prior art, the utility model the advantage that has is: the transmission shaft with the knurls has high connection strength and torque resistance, can prevent the transmission shaft from moving during working, and is flexible in connection mode and long in service life. The root stress concentration condition of the contact position has been avoided through setting up the integral key shaft, and set up longer spline and edging face and improve the area of contact of the transmission shaft of taking the annular knurl and other accessories, make the transmission shaft can bear bigger output or input power, set up the more reasonable chamfer of angle and promote spacing effect and make the installation dismantle more convenient and fast at the relative convex connection position of taking the annular knurl transmission shaft.
Drawings
The invention will be further described with reference to the following figures and examples:
fig. 1 is a front view of a first embodiment of a threaded drive shaft of the present invention;
FIG. 2 is an enlarged schematic view at F of FIG. 1;
fig. 3 is a top view of a first embodiment of the threaded drive shaft of the present invention;
fig. 4 is a front view of a second embodiment of the threaded drive shaft of the present invention;
fig. 5 is a left side view of a second embodiment of the threaded drive shaft of the present invention.
In the figure: a first connecting shaft 10; a first threaded hole 11; a second connecting shaft 20; a third connecting shaft 30; a fourth connecting shaft 40; a shoulder 50; a first relief groove 51; a first chamfer 52; a spline shaft 60; a spline 61; a second relief groove 62; a second chamfer 63; a fifth connecting shaft 70; a chamfered surface 71; a sixth connecting shaft 80; seventh connecting shaft 90.
Detailed Description
The following description is only a preferred embodiment of the present invention, and does not limit the scope of the present invention.
See fig. 1-3 for: the first embodiment of the transmission shaft with the knurl comprises a first connecting shaft 10, a second connecting shaft 20, a third connecting shaft 30, a fourth connecting shaft 40, a shaft shoulder 50, a spline shaft 60, a fifth connecting shaft 70, a sixth connecting shaft 80 and a seventh connecting shaft 90 which are coaxially arranged in sequence; the shaft diameters of the first connecting shaft 10, the second connecting shaft 20, the third connecting shaft 30, the fourth connecting shaft 40, the shoulder 50, the spline shaft 60 and the fifth connecting shaft 70 are gradually increased, and the shaft diameters of the fifth connecting shaft 70, the sixth connecting shaft 80 and the seventh connecting shaft 90 are gradually decreased; the spline shaft 60 includes a flat shaft portion and a spline 61 protruding from the flat shaft portion, a minimum distance from the spline 61 to the shoulder 50 is greater than a minimum distance from the spline 61 to the fifth connection shaft 70, and a length of the spline shaft 60 is greater than a length of the fifth connection shaft 70. The spline shaft 60 is arranged to avoid the situation of root stress concentration at the contact part, and the longer spline 61 is arranged to improve the contact area between the transmission shaft with the knurl and other spare and accessory parts, so that the transmission shaft can bear larger output or input power.
Optimally:
the shoulder 50 includes a first relief groove 51 connected to the fourth connecting shaft 40, and the spline shaft 60 includes a second relief groove 62 connected to the shoulder 50; the width of the first relief groove 51 is smaller than the length of the shoulder 50, and the length of the shoulder 50 is smaller than the width of the second relief groove 62. The first relief groove 51 and the second relief groove 62 can reduce the axial interference effect between the knurled transmission shaft and other parts when the knurled transmission shaft is used in cooperation, and can prevent the transmission shaft from moving.
The shaft shoulder 50 further comprises a first chamfer angle 52 connected with the second undercut 62, the angle of the first chamfer angle 52 is A, wherein A is more than or equal to 30 degrees and less than or equal to 40 degrees, and for example, A can be set to 30 degrees, 32 degrees, 34 degrees, 35 degrees, 36 degrees, 38 degrees and 40 degrees. When the angle A of the first chamfer angle 52 is within the range, the connection between the second undercut 62 and the shaft shoulder 50 is smoother, and the probability of the transmission shaft moving can be reduced by matching with other parts.
The spline shaft 60 further comprises a second chamfer angle 63 connected to the second undercut 62, the angle of the second chamfer angle 63 is B, wherein B is more than or equal to 10 degrees and less than or equal to 20 degrees, for example, B can be set to 10 degrees, 12 degrees, 14 degrees, 15 degrees, 16 degrees, 18 degrees and 20 degrees. The angle B of the second chamfer angle 63 is within the range, so that the splicing and matching of the transmission shaft with the knurls and a bearing or other parts are smoother, and the quick assembly and disassembly of the transmission shaft with the knurls are facilitated.
The length of the spline 61 is C, wherein C is 9 mm 10 mm, for example, C can be set to 9 mm, 9.2 mm, 9.4 mm, 9.5 mm, 9.55 mm, 9.6 mm, 9.8 mm, 10 mm. When the length C of the spline 61 falls within this range, the spline shaft 60 can improve the structural strength, and can be adapted to various parts at the same time, improving the reliability of use of the knurled transmission shaft.
The first connecting shaft 10 includes a first threaded hole 11, and the seventh connecting shaft 90 includes a second threaded hole (not shown) coaxially provided, the second threaded hole (not shown) being coaxial with the first threaded hole 11. The first threaded bore 11 and the second threaded bore (not shown) provide an alternative means of connection of the knurled transmission shaft to a bearing or other component, making the knurled transmission shaft more flexible to use.
The depth of the first threaded hole 11 is D, wherein D is 6 mm ≦ D ≦ 8 mm, and D may be set to 6 mm, 6.2 mm, 6.4 mm, 6.6 mm, 6.7 mm, 6.8 mm, 7 mm, 7.2 mm, 7.4 mm, 7.6 mm, 7.8 mm, 8 mm, for example. When the depth D of the first threaded hole 11 falls within the range, the transmission shaft with the knurls is matched with other parts more firmly, the probability of the transmission shaft with the knurls to play is effectively reduced, and the working stability is improved.
The ratio of the sum of the lengths of the sixth connecting shaft 80 and the seventh connecting shaft 90 to the total length of the transmission shaft is E, wherein E is more than or equal to 0.4 and less than or equal to 0.6, for example, the length of the sixth connecting shaft 80 is 50.85 mm, the length of the seventh connecting shaft 90 is 4.8 mm, the total length of the transmission shaft is 107.1 mm, the value of E is 0.5196, the precise value of E in the same design is slightly different with different processing technologies and required precision, and E can also be set to be 0.4, 0.42, 0.44, 0.46, 0.48, 0.5, 0.52, 0.54, 0.56, 0.58 and 0.6. When the length of the sixth connecting shaft 80 or the seventh connecting shaft 90 is longer, the ratio E of the sum of the lengths of the sixth connecting shaft 80 and the seventh connecting shaft 90 to the length of the transmission shaft with the knurls falls within the range, and the contact area of the transmission shaft with the knurls, which is matched with the bearing or the part thereof, is increased, so that the transmission shaft with the knurls has higher connection strength and torque resistance.
See fig. 4 and 5 for illustration: the second embodiment of the knurled transmission shaft differs from the first embodiment described above in that: the fifth connecting shaft 70 includes at least two chamfered surfaces 71 disposed opposite to each other, the two chamfered surfaces 71 are connected to the spline shaft 60 and extend toward the fifth connecting shaft 70, and the length of the two chamfered surfaces 71 is smaller than that of the fifth connecting shaft 70. The two chamfered surfaces 71 can be used in cooperation with a clamping tool to prevent the knurled transmission shaft and the clamping tool from rotating.
The spline shaft 60 has a maximum diameter dimension greater than the distance separating the two oppositely disposed chamfered surfaces 71. The spline 61 protrudes out of the two chamfered surfaces 71, so that the condition that the spline 61 is damaged due to the fact that the clamping tool accidentally slides to the position of the spline 61 can be avoided, and the orientation of the clamping tool can be better defined.
The present invention is not intended to be limited to the particular embodiments shown and described, but is to be accorded the widest scope consistent with the principles and novel features herein disclosed. Other structures and principles are the same as those of the prior art, and are not described in detail herein.
Claims (10)
1. The utility model provides a take transmission shaft of annular knurl which characterized in that: the first connecting shaft, the second connecting shaft, the third connecting shaft, the fourth connecting shaft, the shaft shoulder, the spline shaft, the fifth connecting shaft, the sixth connecting shaft and the seventh connecting shaft are coaxially arranged in sequence; the shaft diameters of the first connecting shaft, the second connecting shaft, the third connecting shaft, the fourth connecting shaft, the shaft shoulder, the spline shaft and the fifth connecting shaft are gradually increased, and the shaft diameters of the fifth connecting shaft, the sixth connecting shaft and the seventh connecting shaft are gradually decreased; the spline shaft comprises a flat shaft part and a spline which is arranged on the flat shaft part in a protruding mode, the minimum distance from the spline to the shaft shoulder is larger than the minimum distance from the spline to the fifth connecting shaft, and the length of the spline shaft is larger than that of the fifth connecting shaft.
2. The knurled driveshaft according to claim 1, wherein: the shaft shoulder includes a first relief groove connected to the fourth connecting shaft, and the spline shaft includes a second relief groove connected to the shaft shoulder; the width of the first tool withdrawal groove is smaller than the length of the shaft shoulder, and the length of the shaft shoulder is smaller than the width of the second tool withdrawal groove.
3. The knurled driveshaft according to claim 2, wherein: the shaft shoulder also comprises a first chamfer angle connected with the second tool withdrawal groove, the angle of the first chamfer angle is A, and A is more than or equal to 30 degrees and less than or equal to 40 degrees.
4. The knurled driveshaft according to claim 2, wherein: the spline shaft further comprises a second chamfer angle connected to the second tool withdrawal groove, the angle of the second chamfer angle is B, and B is more than or equal to 10 degrees and less than or equal to 20 degrees.
5. The knurled driveshaft according to claim 1, wherein: the length of the spline is C, wherein C is more than or equal to 9 mm and less than or equal to 10 mm.
6. The knurled driveshaft according to claim 1, wherein: the fifth connecting shaft comprises at least two opposite edge cutting surfaces, the two edge cutting surfaces are connected to the spline shaft and extend towards the fifth connecting shaft, and the length of the two edge cutting surfaces is smaller than that of the fifth connecting shaft.
7. The knurled driveshaft according to claim 6, wherein: the maximum diameter of the spline shaft is larger than the distance between the two oppositely arranged chamfered surfaces.
8. The knurled driveshaft according to claim 1, wherein: the first connecting shaft comprises a first threaded hole, the seventh connecting shaft comprises a second threaded hole which is coaxially arranged, and the second threaded hole is coaxial with the first threaded hole.
9. The knurled driveshaft according to claim 8, wherein: the depth of the first threaded hole is D, wherein D is more than or equal to 6 mm and less than or equal to 8 mm.
10. The knurled driveshaft according to claim 1, wherein: the ratio of the sum of the lengths of the sixth connecting shaft and the seventh connecting shaft to the total length of the transmission shaft is E, wherein E is more than or equal to 0.4 and less than or equal to 0.6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022193698.7U CN214304822U (en) | 2020-09-29 | 2020-09-29 | Transmission shaft with knurl |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022193698.7U CN214304822U (en) | 2020-09-29 | 2020-09-29 | Transmission shaft with knurl |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214304822U true CN214304822U (en) | 2021-09-28 |
Family
ID=77829909
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022193698.7U Active CN214304822U (en) | 2020-09-29 | 2020-09-29 | Transmission shaft with knurl |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214304822U (en) |
-
2020
- 2020-09-29 CN CN202022193698.7U patent/CN214304822U/en active Active
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