CN209892716U - Worm connected with spline - Google Patents
Worm connected with spline Download PDFInfo
- Publication number
- CN209892716U CN209892716U CN201920129746.0U CN201920129746U CN209892716U CN 209892716 U CN209892716 U CN 209892716U CN 201920129746 U CN201920129746 U CN 201920129746U CN 209892716 U CN209892716 U CN 209892716U
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- Prior art keywords
- worm
- spline
- worm shaft
- sleeve
- shaft part
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- 238000010273 cold forging Methods 0.000 claims description 10
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 230000003746 surface roughness Effects 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 7
- 230000002950 deficient Effects 0.000 abstract description 6
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 239000002699 waste material Substances 0.000 abstract description 3
- 230000005540 biological transmission Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Abstract
A worm with a spline connection relates to the technical field of worms. The worm gear comprises a worm shaft, a worm sleeve, a spline, a pin key hole, spiral teeth and a worm shaft hole; the worm cover matches the sliding connection at the worm epaxially through the external splines on internal spline and the second worm axial region on it, be provided with the round pin key hole on the first worm axial region left part, first worm axial region, second worm axial region, third worm axial region and external splines integrated into one piece become the worm axle, the worm cover and last helical tooth and internal spline integrated into one piece the utility model discloses beneficial effect does: the worm shaft and the worm sleeve are processed in one-step forming mode, the material utilization rate can be improved, the precision is greatly improved, defective products are reduced, the worm shaft and the worm sleeve are connected through the spline, the precision is higher, the guidance quality is good, the worm shaft and the worm sleeve are convenient to mount and dismount, and can be replaced under the condition that one of the worm shaft and the worm sleeve is damaged, and waste is avoided.
Description
Technical Field
The utility model relates to a worm technical field, concretely relates to worm that spline connection is connected.
Background
The worm refers to a gear which has one or more spiral teeth and is meshed with a worm wheel to form a staggered shaft gear pair. The indexing curved surface can be a cylindrical surface, a conical surface or a circular ring surface, and has four categories of an Archimedes worm, an involute worm, a normal straight profile worm and a conical surface enveloping cylindrical worm.
When the number of the heads of the worm z1 is selected, three aspects of transmission ratio, efficiency and manufacturing are mainly considered, from the manufacturing aspect, the more the heads are, the higher the requirement on the manufacturing precision of the worm is, and from the aspect of improving the efficiency, the more the heads are, the higher the efficiency is; if self-locking is required, a single head is selected, and a small number of heads is selected from the aspect of improving the transmission ratio; in the power transmission, on the premise of considering the compact structure, the improvement of the efficiency is well considered. When the i-drive is small, a multi-head worm is preferably adopted. When the transmission motion requires self-locking, a single-head worm is often selected.
The flanks of a plain cylindrical worm (except for a ZK-type worm) are typically machined on a lathe with a straight-edged tool. According to different installation positions of the turning tool, tooth profile curves of the processed worm tooth surface in different sections are different.
The existing worm is machined by a machine tool, more materials are used, parts with complex shapes are machined, the efficiency is low when the size and shape precision of the existing worm is high, the added surface quality is poor, the existing worm is of an integrated structure, and when the spiral teeth are damaged, the whole worm can be scrapped only to be excessively wasted.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to prior art's defect and not enough, provide a worm that spline connection connects, material utilization can be improved to one shot forming processing worm axle and worm cover, has improved the precision greatly, has reduced the production of defective products, uses splined connection, and the precision is higher, and the guidance quality is good, and worm axle and worm cover are dismantled in easy to assemble, under the condition of one of them damage, can change, avoid extravagant.
In order to achieve the above purpose, the utility model adopts the following technical scheme: the worm gear comprises a worm shaft 1, a worm sleeve 2, a spline 3, a pin key hole 4, spiral teeth 10 and a worm shaft hole 11; the worm shaft 1 is divided into a first worm shaft part 5, a second worm shaft part 6 and a third worm shaft part 7 from left to right in sequence, the spline 3 is divided into an external spline 8 and an internal spline 9, the internal spline 9 is arranged on the outer surface of the second worm shaft part 6, a worm shaft hole 11 is arranged in the middle of the worm sleeve 2 in a penetrating way, spiral teeth 10 are arranged on the outer surface of the worm sleeve 2, the external spline 8 is arranged on the inner surface of the worm sleeve 2, the external spline 8 and the internal spline 9 are of a multi-tooth structure which are matched with each other, the worm sleeve 2 is matched with an internal spline 9 on the second worm shaft part 6 through an external spline 8 on the worm sleeve and is connected on the worm shaft 1 in a sliding way, the left part of the first worm shaft part 5 is provided with a pin key hole 4, the first worm shaft part 5, the second worm shaft part 6, the third worm shaft part 7 and the internal spline 9 are integrally formed into a worm shaft 1, and the worm sleeve 2 and the spiral teeth 10 and the external spline 8 thereon are integrally formed.
The whole worm shaft 1 is manufactured by cold forging and stamping.
The whole worm sleeve 2 is manufactured by cold forging and stamping.
The length of the first worm shaft portion 5, the length of the second worm shaft portion 6, the length of the third worm shaft portion 7, and the diameter of the worm shaft 1 are 250: 40: 20: 25.
The surface roughness of the worm shaft 1 was 0.8.
The modulus of the spline 3 is 0.5.
The number of teeth of the spline 3 is 50.
The pressure angle of the spline 3 is 45 °.
The utility model discloses a theory of operation: the worm sleeve is matched with the internal spline on the second worm shaft part through the external spline on the worm sleeve and is in sliding connection with the worm shaft to form a complete detachable worm, the left part of the first worm shaft part is provided with a pin key hole for positioning and fixing a positioning pin, the first worm shaft part, the second worm shaft part, the third worm shaft part and the internal spline are integrally formed into the worm shaft, the whole worm shaft is integrally formed by cold forging and stamping, the spiral teeth and the external spline on the worm sleeve are integrally formed, the whole worm sleeve is integrally formed by cold forging and stamping, the worm shaft and the worm sleeve are formed in one step, the material utilization rate can be improved, the precision is greatly improved, the worm sleeve can be tightly matched with other parts during assembly, the generation of defective products is reduced, the spline is connected by using the spline, the number of the splines is more, the total contact area is larger, so that larger load can be borne, and the precision, the guidance quality is good, and convenient to assemble dismantles worm axle and worm cover, under one of them damaged condition, can change, avoids extravagant.
After the technical scheme is adopted, the utility model discloses beneficial effect does: the worm shaft and the worm sleeve are processed in one-step forming mode, the material utilization rate can be improved, the precision is greatly improved, defective products are reduced, the worm shaft and the worm sleeve are connected through the spline, the precision is higher, the guidance quality is good, the worm shaft and the worm sleeve are convenient to mount and dismount, and can be replaced under the condition that one of the worm shaft and the worm sleeve is damaged, and waste is avoided.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be 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 inventive exercise.
Fig. 1 is a schematic structural diagram of the present invention;
fig. 2 is a schematic structural view of the worm shaft 1 according to the present invention;
FIG. 3 is a right side view corresponding to FIG. 2;
fig. 4 is a schematic structural view of the worm housing 2 according to the present invention;
fig. 5 is a right side view corresponding to fig. 4.
Description of reference numerals: the worm gear comprises a worm shaft 1, a worm sleeve 2, a spline 3, a pin key hole 4, a first worm shaft part 5, a second worm shaft part 6, a third worm shaft part 7, an external spline 8, an internal spline 9, spiral teeth 10 and a worm shaft hole 11.
Detailed Description
Referring to fig. 1 to 5, the technical solution adopted by the present embodiment is: the worm gear comprises a worm shaft 1, a worm sleeve 2, a spline 3, a pin key hole 4, spiral teeth 10 and a worm shaft hole 11; the worm shaft 1 is divided into a first worm shaft part 5, a second worm shaft part 6 and a third worm shaft part 7 from left to right in sequence, the spline 3 is divided into an external spline 8 and an internal spline 9, the internal spline 9 is arranged on the outer surface of the second worm shaft part 6, a worm shaft hole 11 is arranged in the middle of the worm sleeve 2 in a penetrating way, spiral teeth 10 are arranged on the outer surface of the worm sleeve 2, the external spline 8 is arranged on the inner surface of the worm sleeve 2, the external spline 8 and the internal spline 9 are of a multi-tooth structure which are matched with each other, the worm sleeve 2 is matched with an internal spline 9 on the second worm shaft part 6 through an external spline 8 on the worm sleeve and is connected on the worm shaft 1 in a sliding way, the left part of the first worm shaft part 5 is provided with a pin key hole 4, the first worm shaft part 5, the second worm shaft part 6, the third worm shaft part 7 and the internal spline 9 are integrally formed into a worm shaft 1, and the worm sleeve 2 and the spiral teeth 10 and the external spline 8 thereon are integrally formed.
The whole worm shaft 1 is manufactured by cold forging and stamping.
The whole worm sleeve 2 is manufactured by cold forging and stamping.
The length of the first worm shaft portion 5, the length of the second worm shaft portion 6, the length of the third worm shaft portion 7, and the diameter of the worm shaft 1 are 250: 40: 20: 25.
The diameter error of the diameter of the worm shaft 1 is 25.065-24.914.
The outer diameter of the external spline 8 is the diameter of the worm shaft plus 0.04.
The surface roughness of the worm shaft 1 was 0.8.
The modulus of the spline 3 is 0.5.
The number of teeth of the spline 3 is 50.
The pressure angle of the spline 3 is 45 °.
The utility model discloses a theory of operation: the worm sleeve is matched with the internal spline on the second worm shaft part through the external spline on the worm sleeve and is in sliding connection with the worm shaft to form a complete detachable worm, the left part of the first worm shaft part is provided with a pin key hole for positioning and fixing a positioning pin, the first worm shaft part, the second worm shaft part, the third worm shaft part and the internal spline are integrally formed into the worm shaft, the whole worm shaft is integrally formed by cold forging and stamping, the spiral teeth and the external spline on the worm sleeve are integrally formed, the whole worm sleeve is integrally formed by cold forging and stamping, the worm shaft and the worm sleeve are formed in one step, the material utilization rate can be improved, the precision is greatly improved, the worm sleeve can be tightly matched with other parts during assembly, the generation of defective products is reduced, the spline is connected by using the spline, the number of the splines is more, the total contact area is larger, so that larger load can be borne, and the precision, the guidance quality is good, and convenient to assemble dismantles worm axle and worm cover, under one of them damaged condition, can change, avoids extravagant.
After the technical scheme is adopted, the utility model discloses beneficial effect does: the worm shaft and the worm sleeve are processed in one-step forming mode, the material utilization rate can be improved, the precision is greatly improved, defective products are reduced, the worm shaft and the worm sleeve are connected through the spline, the precision is higher, the guidance quality is good, the worm shaft and the worm sleeve are convenient to mount and dismount, and can be replaced under the condition that one of the worm shaft and the worm sleeve is damaged, and waste is avoided.
The above description is only for the purpose of illustrating the technical solutions of the present invention and not for the purpose of limiting the same, and other modifications or equivalent replacements made by those of ordinary skill in the art to the technical solutions of the present invention should be covered within the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solutions of the present invention.
Claims (8)
1. A spline-connected worm, characterized by: the worm gear comprises a worm shaft (1), a worm sleeve (2), a spline (3), a pin key hole (4), spiral teeth (10) and a worm shaft hole (11); the worm shaft (1) is sequentially divided into a first worm shaft part (5), a second worm shaft part (6) and a third worm shaft part (7) from left to right, the spline (3) is divided into an external spline (8) and an internal spline (9), the external spline (8) is arranged on the outer surface of the second worm shaft part (6), a worm shaft hole (11) is formed in the middle of the worm sleeve (2) in a penetrating manner, the external spline (8) is arranged on the outer surface of the worm sleeve (2), the internal spline (9) is arranged on spiral teeth (10), the internal spline (9) is arranged on the inner surface of the worm sleeve (2), the external spline (8) and the internal spline (9) are of a multi-tooth structure matched with each other, the worm sleeve (2) is matched with the external spline (8) on the second worm shaft part (6) through the external spline (8) on the worm sleeve (2) in a sliding manner, the left part of the first worm shaft part (5) is provided with a pin key hole (4), the first worm shaft part (5), the second worm shaft part (6), the third worm shaft part (7) and the external spline (8) are integrally formed into a worm shaft (1), and the worm sleeve (2) and the spiral teeth (10) and the internal spline (9) thereon are integrally formed.
2. A splined-connection worm according to claim 1, wherein: the whole worm shaft (1) is manufactured by cold forging and stamping.
3. A splined-connection worm according to claim 1, wherein: the whole worm sleeve (2) is manufactured by cold forging and stamping.
4. A splined-connection worm according to claim 1, wherein: the length of the first worm shaft part (5), the length of the second worm shaft part (6), the length of the third worm shaft part (7) and the diameter of the worm shaft (1) are 250: 40: 20: 25.
5. A splined-connection worm according to claim 1, wherein: the surface roughness of the worm shaft (1) is 0.8.
6. A splined-connection worm according to claim 1, wherein: the modulus of the spline (3) is 0.5.
7. A splined-connection worm according to claim 1, wherein: the number of teeth of the spline (3) is 50.
8. A splined-connection worm according to claim 1, wherein: the pressure angle of the spline (3) is 45 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920129746.0U CN209892716U (en) | 2019-01-25 | 2019-01-25 | Worm connected with spline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920129746.0U CN209892716U (en) | 2019-01-25 | 2019-01-25 | Worm connected with spline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209892716U true CN209892716U (en) | 2020-01-03 |
Family
ID=68996120
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920129746.0U Expired - Fee Related CN209892716U (en) | 2019-01-25 | 2019-01-25 | Worm connected with spline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209892716U (en) |
-
2019
- 2019-01-25 CN CN201920129746.0U patent/CN209892716U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200103 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |