CN213257173U - Expansion sleeve type clamping structure with axial compression structure - Google Patents
Expansion sleeve type clamping structure with axial compression structure Download PDFInfo
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- CN213257173U CN213257173U CN202022318112.5U CN202022318112U CN213257173U CN 213257173 U CN213257173 U CN 213257173U CN 202022318112 U CN202022318112 U CN 202022318112U CN 213257173 U CN213257173 U CN 213257173U
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- mandrel
- expansion sleeve
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- axial compression
- elastic ring
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Abstract
The utility model discloses an expansion sleeve type clamping structure with an axial compression structure, which comprises a mandrel arranged at the center of the whole clamping structure, an expansion sleeve sleeved on the outer edge of the mandrel, an axial compression structure arranged at one side of the mandrel and a nut arranged at the end part of the mandrel; the mandrel is provided with a step end face forming axial positioning and a conical face forming radial positioning, and the outer edge of the expansion sleeve is in clearance fit with an inner hole of a clamped gear product; the axial compression structure comprises a first pressure plate, a second pressure plate and an elastic ring, when the axial compression structure is used for locking, the second compression plate enables the elastic ring to be tightly attached to the first pressure plate, the elastic ring is compressed to generate axial elasticity, the first pressure plate and a clamped gear product are tightly pressed and attached to the step end face of the mandrel, and the product is axially positioned. The structure has the advantages of high positioning precision, stability, reliability and difficult damage to products, and is suitable for clamping various processing (including turning, milling, boring, drilling, grinding, hobbing, gear shaping, gear shaving, gear honing, gear grinding and the like) and detection of various products with inner holes.
Description
Technical Field
The utility model relates to a machine tooling technical field specifically, relates to a take bloated shell type clamping structure of axial compact structure.
Background
In the field of machining, when in machining and detection, the clamping structure and the precision of the clamp directly influence the machining and detection precision of a product. The expansion sleeve type clamp (detector) has the characteristic that the expansion sleeve can eliminate the radial fit clearance, and is widely applied.
But at present, after the inner hole of the product is expanded by the expansion sleeve and is positioned radially, the friction force between the expansion sleeve and the inner hole of the product is utilized to limit the position axially, and no axial external force is applied to position the product axially; meanwhile, because of the influence of the machining of the expansion sleeve and the matching error of the expansion sleeve, after the inner hole of the product is expanded in the radial direction, the end face of the product and the end face of the mandrel can not avoid generating a small gap. The end face of the product is a very important structural element and is always used as an assembly reference, a machining process reference and a detection reference, and accurate and reliable axial positioning is required during machining or detection. Therefore, the existing clamping (detecting) tool structure for tightly expanding the inner hole of the product only by the expansion sleeve has the defect of no axial positioning, and the axial positioning error directly reduces the processing and detecting precision.
From the foregoing, the expanding sleeve type clamp (inspection) which has high positioning accuracy, is stable and reliable and is not easy to damage products has great practical significance.
Disclosure of Invention
The utility model discloses to current not enough, provide a take axial compact structure's bloated shell type clamping structure, this structure has positioning accuracy height, reliable and stable, is difficult for damaging the advantage of product to be applicable to the various clamping that have various processing (including car, milling, boring, brill, grinding, gear hobbing, gear shaping, shaving, gear honing, gear grinding etc.) and detection of hole (including cylinder hole, splined hole etc.) product.
The utility model discloses the purpose is realized through following technical scheme:
the expansion sleeve type clamping structure with the axial compression structure comprises a mandrel, an expansion sleeve, an axial compression structure and a nut, wherein the mandrel is arranged at the center of the whole clamping structure, the expansion sleeve is sleeved on the outer edge of the mandrel, the axial compression structure is arranged on one side of the mandrel, and the nut is arranged at the end part of the mandrel;
the mandrel is provided with a step end face forming axial positioning and a conical face forming radial positioning, and the outer edge of the expansion sleeve is in clearance fit with an inner hole of a clamped gear product;
the axial compression structure comprises a first compression plate, a second compression plate and an elastic ring arranged between the first compression plate and the second compression plate, when the axial compression structure is used for locking, the second compression plate enables the elastic ring to be tightly attached to the first compression plate, the elastic ring is compressed to generate axial elasticity, the first compression plate and a clamped gear product are tightly pressed and attached to the step end face of the mandrel, and the clamped gear product is axially positioned.
The utility model discloses a take the bloated shell type clamping structure of axial compact structure, be the bloated shell type that takes axial compact structure press from both sides (examine) the utensil promptly. The clamp (detection) tool comprises a mandrel, an expansion sleeve, a first pressing plate, a second pressing plate, an elastic ring and a nut. The mandrel is provided with a step end face forming axial positioning and a conical face forming radial positioning. The mandrel conical surface is provided with an expansion sleeve, the inner diameter taper of the expansion sleeve is consistent with the taper of the mandrel conical surface, the outer diameter of the expansion sleeve is in small clearance fit with the inner hole of a clamped product, the expansion sleeve is of a slotted elastic structure, namely open slots which are uniformly distributed along the circumference are arranged, when the expansion sleeve is axially pressed on the mandrel conical surface, the open slots can be elastically deformed and slightly expanded, and the expansion sleeve can be radially expanded. One end of the mandrel is provided with a first pressing plate, an elastic ring and a second pressing plate; and is provided with a thread, fitted with a nut. The structure has the advantages of high positioning precision, stability, reliability, difficult damage to products and the like, and is suitable for clamping of various processing (including turning, milling, boring, drilling, grinding, hobbing, gear shaping, gear shaving, gear honing, gear grinding and the like) and detection of various products with inner holes (including cylindrical holes, spline holes and the like).
Further, one end of the step end face far away from the mandrel is provided with an axial compression structure; and the axial pressure of the axial pressing structure is adjusted according to the thickness of the first pressing plate and the axial compression amount of the elastic ring.
Further, the end of the spindle is provided with a thread, fitted with a nut; the first pressure plate is arranged at the outer edge of the expansion sleeve, and the second pressure plate is tightly attached to the end face of the expansion sleeve.
When the nut is locked, the elastic ring is tightly attached to the first pressure plate through the second pressure plate, and the elastic ring is compressed to generate axial elasticity, so that the first pressure plate and a product are completely tightly attached to the step end face of the mandrel, and the product is axially positioned; meanwhile, the expansion sleeve is tightly attached to the conical surface of the mandrel through the second pressing plate, the expansion sleeve expands radially, and after a gap between the expansion sleeve and an inner hole of a product is eliminated, the product is expanded to enable the product to be positioned radially.
Furthermore, the mandrel, the expansion sleeve, the first pressure plate, the second pressure plate, the elastic ring and the nut are coaxially arranged. This setting has guaranteed stability and the precision that the shell type clamping structure that expands of taking axial compact structure used.
Further, the taper of the inner diameter of the expansion sleeve is the same as that of the conical surface of the mandrel.
Furthermore, the expansion sleeve is of a slotted elastic structure, namely, open slots uniformly distributed along the circumference are arranged, when the expansion sleeve is axially pressed on the mandrel conical surface, the open slots can elastically deform and slightly expand, and the expansion sleeve can be radially expanded.
Furthermore, the axial length of the expansion sleeve is larger than the sum of the hole width of the inner hole of the clamped gear product and the thickness of the pressure plate.
Further, the diameter of the step end face positioned axially by the mandrel is larger than the diameter of an inner hole of the clamped gear product.
Compared with the prior art, the utility model discloses following beneficial effect has:
the utility model discloses an expansion sleeve type clamping structure with an axial compression structure, which generates axial elasticity by compressing an elastic ring, and completely compresses and fits a product on the step end surface of a mandrel, so that the product is completely axially positioned; and the axial compression amount of the elastic ring can be adjusted to adjust the axial pressure by adjusting the thickness of the pressing plate. And simultaneously, the inner hole of the product is expanded through the expansion sleeve to enable the product to be positioned radially. Therefore, the positioning precision is higher, the positioning device is more stable and reliable, and the product processing and detection precision is improved. Meanwhile, the structure of the elastic ring pressure plate is adopted, so that the product is not easy to damage.
Drawings
Fig. 1 is the whole schematic diagram of the expansion sleeve type clamping structure with the axial compression structure of the present invention.
Fig. 2 is the whole schematic diagram of the expanding sleeve type clamping structure with the axial compression structure.
The gear comprises a mandrel 1, an expansion sleeve 2, a pressure plate I3, an elastic ring 4, a pressure plate II 5, a nut 6, a step end face 7, a mandrel conical surface 8, an expansion sleeve inner diameter 9, an expansion sleeve outer diameter 10, a gear product 11, an inner hole 12 and a thread 13.
Detailed Description
The present invention will be further described with reference to the following embodiments. Wherein the showings are for the purpose of illustration only and are shown by way of illustration only and not in actual form, and are not to be construed as limiting the present patent; for a better understanding of the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
Example 1
As shown in fig. 1 and fig. 2, the expanding sleeve type clamping structure with an axial compression structure in the present embodiment includes a mandrel 1 disposed at the center of the whole clamping structure, an expanding sleeve 2 sleeved on the outer edge of the mandrel 1, a first pressure plate 3 disposed at one side of the mandrel 1, a second pressure plate 5, an elastic ring 4, and a nut 6 disposed at the end of the mandrel 1; the mandrel 1 is provided with a step end face 7 forming axial positioning and a conical face 8 forming radial positioning, and the outer diameter 10 of the expansion sleeve is in clearance fit with an inner hole 12 of a clamped gear product 11; one end of the mandrel 1, which is far away from the step end face 7, is provided with a first pressure plate 3 and a second pressure plate 5; an elastic ring 4 is arranged between the first pressing plate 3 and the second pressing plate 5; the end of the spindle 1 is provided with a thread 13 fitted with a nut 6; the first pressing plate 3 is arranged on the outer edge of the expansion sleeve 2, and the second pressing plate 5 is tightly attached to the end face of the expansion sleeve 2. The mandrel 1, the expansion sleeve 2, the first pressure plate 3, the second pressure plate 5, the elastic ring 4 and the nut 6 are coaxially arranged.
Wherein, the taper of the inner diameter 9 of the expansion sleeve is the same as that of the conical surface 8 of the mandrel. The expansion sleeve 2 is of a slotted elastic structure, namely, open slots uniformly distributed along the circumference are arranged, when the expansion sleeve 2 is axially compressed on the conical surface 8 of the mandrel, the open slots can be elastically deformed and slightly expanded, and the expansion sleeve 2 can be radially expanded. The axial length of the expansion sleeve 2 is greater than the sum of the hole width of the inner hole 12 of the clamped gear product 11 and the thickness of the first pressing plate 3; the diameter of the step end face 7 positioned axially by the mandrel 1 is larger than the diameter of the inner hole 12 of the clamped gear product 11.
The sleeve-expanding clamping structure with the axial compression structure in the embodiment is a sleeve-expanding clamping (detecting) tool with the axial compression structure. One end of the mandrel 1 is provided with a first pressure plate 3, an elastic ring 4 and a second pressure plate 5; and is provided with a thread 13 fitted with a nut 6. When the nut 6 is locked, the elastic ring 4 is tightly attached to the first pressure plate 3 through the second pressure plate 5, the elastic ring 4 is compressed to generate axial elasticity, and the first pressure plate 5 and a product are completely tightly pressed and attached to the step end face 7 of the mandrel 1, so that the product is axially positioned; meanwhile, the expansion sleeve 2 is tightly attached to the conical surface 8 of the mandrel through the second pressing plate 5, the expansion sleeve 2 expands radially, and the product is expanded to be positioned radially after a gap between the expansion sleeve 2 and the inner hole 12 of the product is eliminated. The invention has the advantages of high positioning precision, stability, reliability, difficult damage to products and the like. The clamp can be manufactured according to various processing equipment and specifications of products, and is suitable for clamping various processing (including turning, milling, boring, drilling, grinding, hobbing, gear shaping, shaving, gear honing, gear grinding and the like) and detection of various products with inner holes (including cylindrical holes, spline holes and the like).
In the embodiment, the elastic ring of the expansion sleeve type clamping structure with the axial compression structure is compressed to generate axial elasticity, so that a product is completely pressed and attached to the step end face of the mandrel, and the product is completely and axially positioned; and through adjusting the thickness between the clamp plates, the axial compression amount of the elastic ring can be adjusted to adjust proper axial pressure. The precision and the reliability of axial positioning are ensured.
It should be understood that the above-mentioned embodiments are only examples for clearly illustrating the technical solutions of the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (8)
1. An expansion sleeve type clamping structure with an axial compression structure is characterized by comprising a mandrel, an expansion sleeve, an axial compression structure and a nut, wherein the mandrel is arranged at the center of the whole clamping structure;
the mandrel is provided with a step end face forming axial positioning and a conical face forming radial positioning, and the outer edge of the expansion sleeve is in clearance fit with an inner hole of a clamped gear product;
the axial compression structure comprises a first compression plate, a second compression plate and an elastic ring arranged between the first compression plate and the second compression plate, and when the axial compression structure is used for locking, the second compression plate is compressed to enable the elastic ring to be tightly attached to the first compression plate and the elastic ring to be compressed to generate axial elasticity, so that the first compression plate and a gear product to be clamped are compressed and attached to the step end face of the mandrel, and the gear product to be clamped is axially positioned.
2. The expansion sleeve type clamping structure with the axial compression structure as claimed in claim 1, wherein one end of the step end face far away from the mandrel is equipped with the axial compression structure; and the axial pressure of the axial compression structure is adjusted according to the thickness of the first pressure plate and the axial compression amount of the elastic ring.
3. The expansion sleeve type clamping structure with the axial compression structure as claimed in claim 2, wherein the end of the mandrel is provided with threads and is assembled with a nut; the first pressure plate is arranged at the outer edge of the expansion sleeve, and the second pressure plate is tightly attached to the end face of the expansion sleeve.
4. The expansion sleeve type clamping structure with the axial compression structure according to claim 1, wherein the mandrel, the expansion sleeve, the first pressing plate, the second pressing plate, the elastic ring and the nut are coaxially arranged.
5. The expanding sleeve type clamping structure with the axial compression structure as claimed in claim 1, wherein the taper of the inner diameter of the expanding sleeve is the same as the taper of the conical surface of the mandrel.
6. The expansion sleeve type clamping structure with the axial compression structure as claimed in claim 1, wherein the expansion sleeve is a slotted elastic structure.
7. The expanding sleeve type clamping structure with the axial compression structure as claimed in claim 6, wherein the axial length of the expanding sleeve is greater than the sum of the hole width of the inner hole of the clamped gear product and the thickness of the pressing plate.
8. The expanding sleeve type clamping structure with the axial compression structure as claimed in claim 1, wherein the diameter of the step end face positioned axially by the mandrel is larger than the diameter of the inner hole of the clamped gear product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022318112.5U CN213257173U (en) | 2020-10-19 | 2020-10-19 | Expansion sleeve type clamping structure with axial compression structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022318112.5U CN213257173U (en) | 2020-10-19 | 2020-10-19 | Expansion sleeve type clamping structure with axial compression structure |
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| CN213257173U true CN213257173U (en) | 2021-05-25 |
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| CN202022318112.5U Active CN213257173U (en) | 2020-10-19 | 2020-10-19 | Expansion sleeve type clamping structure with axial compression structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115289131A (en) * | 2022-08-24 | 2022-11-04 | 徐州徐工矿业机械有限公司 | Pin shaft structure and mounting method of steering oil cylinder of hinged dumper |
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2020
- 2020-10-19 CN CN202022318112.5U patent/CN213257173U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115289131A (en) * | 2022-08-24 | 2022-11-04 | 徐州徐工矿业机械有限公司 | Pin shaft structure and mounting method of steering oil cylinder of hinged dumper |
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