CN215433431U - Expansion sleeve and spline expansion sleeve - Google Patents
Expansion sleeve and spline expansion sleeve Download PDFInfo
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- CN215433431U CN215433431U CN202122234966.XU CN202122234966U CN215433431U CN 215433431 U CN215433431 U CN 215433431U CN 202122234966 U CN202122234966 U CN 202122234966U CN 215433431 U CN215433431 U CN 215433431U
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- sleeve
- sleeve body
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- expansion sleeve
- expansion
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Abstract
The utility model discloses an expansion sleeve and a spline expansion sleeve, wherein the expansion sleeve comprises a sleeve body, and an inner hole is arranged in the sleeve body; the inner hole comprises a cylindrical hole and a conical hole which are sequentially connected from top to bottom; the diameter of the taper hole is gradually increased from top to bottom; the diameter of the cylindrical hole is equal to that of the upper end of the taper hole; the sleeve body is provided with a plurality of upper cuts and lower cuts which penetrate through the side wall of the sleeve body from the radial direction of the sleeve body, the upper cuts extend downwards from the top of the sleeve body along the axial direction of the sleeve body, the upper ends of the upper cuts are open and penetrate through the top of the sleeve body, and the lower ends of the upper cuts are cut off and are positioned at the lower part of the sleeve body; the lower notch extends upwards from the bottom of the sleeve body along the axis direction of the sleeve body, the lower end of the lower notch is opened and penetrates through the bottom of the sleeve body, and the upper end of the lower notch is stopped and is positioned at the upper part of the sleeve body; at least one limiting notch is formed in the side wall of the bottom of the sleeve body, the limiting notch penetrates through the side wall of the sleeve body in the radial direction of the sleeve body, and the lower end of the limiting notch is open and penetrates through the bottom of the sleeve body. The expansion sleeve is convenient to limit the expansion sleeve to rotate on the conical seat, and meanwhile, the expansion sleeve is convenient to disassemble.
Description
Technical Field
The utility model relates to the field of gear machining, in particular to an expansion sleeve and a spline expansion sleeve.
Background
In the gear hobbing process, a gear clamp is required to clamp the gear. The existing gear clamp comprises a conical seat and an expansion sleeve, wherein a cylindrical hole and a conical hole are formed in the expansion sleeve, and the expansion sleeve is sleeved on the conical seat; during clamping, the gear is sleeved on the outer wall of the expansion sleeve, then the expansion sleeve moves downwards, the conical seat continuously extends into the expansion sleeve, the inner wall of the expansion sleeve is continuously extruded, the expansion sleeve expands outwards, an inner hole in the middle of the gear is expanded, and clamping of the gear is further completed; when the gear is disassembled, the expansion sleeve moves upwards to separate the expansion sleeve from the conical seat, the extrusion force applied to the inner wall of the expansion sleeve disappears, the expansion sleeve recovers, and the clamping of the inner hole of the gear is loosened.
In order to prevent the expansion sleeve from rotating on the conical seat, flat key grooves are formed in the inner wall of the existing cylindrical hole and the conical seat, and the conical seat and the expansion sleeve are connected through a flat key to limit the rotation of the expansion sleeve; because the conical seat and the expansion sleeve limit the rotation of the expansion sleeve in a flat key connection mode, the expansion sleeve can be inserted into the flat key groove only after the expansion sleeve is located at a working position, and the operation is troublesome. Meanwhile, due to the fact that interference fit exists between the flat key and the key groove, when the gear is detached, the expansion sleeve is difficult to detach, and the gear is not convenient to detach.
SUMMERY OF THE UTILITY MODEL
The utility model aims to: aiming at the problems, the expansion sleeve and the spline expansion sleeve are provided, the expansion sleeve is conveniently limited to rotate on the conical seat, and the expansion sleeve is convenient to disassemble.
The technical scheme adopted by the utility model is as follows:
an expansion sleeve comprises a sleeve body, wherein an inner hole is formed in the sleeve body, and the inner hole penetrates through the sleeve body from top to bottom; the inner hole comprises a cylindrical hole and a conical hole which are sequentially connected from top to bottom; the diameter of the taper hole is gradually increased from top to bottom; the diameter of the cylindrical hole is equal to that of the upper end of the taper hole; the sleeve body is provided with a plurality of upper notches and lower notches which penetrate through the side wall of the sleeve body from the radial direction of the sleeve body, the upper notches extend downwards from the top of the sleeve body along the axial direction of the sleeve body, the upper ends of the upper notches are open and penetrate through the top of the sleeve body, and the lower ends of the upper notches are cut off and are positioned at the lower part of the sleeve body; the lower notch extends upwards from the bottom of the sleeve body along the axis direction of the sleeve body, the lower end of the lower notch is open and penetrates through the bottom of the sleeve body, and the upper end of the lower notch is cut off and is positioned at the upper part of the sleeve body; the side wall of the bottom of the sleeve body is provided with at least one limiting notch, the limiting notch penetrates through the side wall of the sleeve body from the radial direction of the sleeve body, and the lower end of the limiting notch is opened and penetrates through the bottom of the sleeve body.
Furthermore, spacing breach is around set body lateral wall a week equidistant setting, and every spacing breach is from supreme degree of depth homogeneous phase down.
Furthermore, the limiting notch is formed in the opening of the lower notch.
Furthermore, the width of the limiting notch is larger than that of the lower notch.
Furthermore, the upper notch and the lower notch are arranged on the sleeve body in a staggered manner.
Furthermore, the end parts of the upper notch and the lower notch are provided with deformation holes, and the deformation holes penetrate through the side wall of the sleeve body in the radial direction of the sleeve body.
Furthermore, a sleeve pulling part is arranged on the inner wall of the cylindrical hole.
Furthermore, the sleeve pulling part is a sleeve flange arranged on the inner wall of the cylindrical hole.
Furthermore, an annular groove is formed in the cylindrical hole, and the upper side wall of the annular groove is a sleeve pulling part.
The utility model also discloses a spline expansion sleeve which comprises the expansion sleeve, wherein a circle of spline teeth is arranged on the outer side wall of the sleeve body.
In summary, due to the adoption of the technical scheme, the utility model has the beneficial effects that:
according to the utility model, due to the existence of the limiting notch, the expansion sleeve limiting block can be arranged on the side part of the conical seat, and when the expansion sleeve limiting block is embedded into the limiting notch, the expansion sleeve can be limited to rotate on the conical seat. Compared with the prior art, the circumferential positioning of the expansion sleeve is more convenient, and the disassembly of the expansion sleeve and the gear is also convenient. Meanwhile, a sleeve pulling part is arranged on the inner wall of the cylindrical hole of the expansion sleeve. The expansion sleeve is conveniently detached from the conical seat, so that the gear is convenient to detach.
Drawings
FIG. 1 is a cross-sectional view of an expansion sleeve;
FIG. 2 is a structural view of a spline expanding sleeve;
FIG. 3 is a view showing the construction of an internal expanding gear clamp according to embodiment 1;
fig. 4 is a structural view of the head.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
In addition, the embodiments of the present invention and the features of the embodiments may be combined with each other without conflict.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, or orientations or positional relationships that are conventionally placed when the products of the present invention are used, or orientations or positional relationships that are conventionally understood by those skilled in the art, and are used only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element that is referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1
As shown in fig. 1, the utility model discloses an expansion sleeve 101, which comprises a sleeve body 6, wherein an inner hole is formed in the sleeve body 6, and the inner hole penetrates through the sleeve body 6 from top to bottom; the inner hole comprises a cylindrical hole 8 and a taper hole 2 which are connected in sequence from top to bottom; the diameter of the taper hole 2 is gradually increased from top to bottom; the diameter of the cylindrical hole 8 is equal to that of the upper end of the taper hole 2; the sleeve body 6 is provided with a plurality of upper notches 1 and lower notches 4 which penetrate through the side wall of the sleeve body 6 from the radial direction of the sleeve body 6, the upper notches 1 extend downwards from the top of the sleeve body 6 along the axial direction of the sleeve body 6, the upper ends of the upper notches 1 are opened and penetrate through the top of the sleeve body 6, and the lower ends of the upper notches 1 are stopped and positioned at the lower part of the sleeve body 6; the lower notch 4 extends upwards from the bottom of the sleeve body 6 along the axial direction of the sleeve body 6, the lower end of the lower notch 4 is open and penetrates through the bottom of the sleeve body 6, and the upper end of the lower notch 4 is cut off and is positioned at the upper part of the sleeve body 6; at least one limiting notch 3 is formed in the side wall of the bottom of the sleeve body 6, the limiting notch 3 penetrates through the side wall of the sleeve body 6 in the radial direction of the sleeve body 6, and the lower end of the limiting notch 3 is opened and penetrates through the bottom of the sleeve body 6.
As shown in fig. 1 and 3, due to the existence of the limiting notch 3, the expansion sleeve limiting block 102 can be arranged at the side of the conical seat 105, and when the expansion sleeve limiting block 102 is embedded into the limiting notch 3, the expansion sleeve 101 can be limited to rotate on the conical seat 105. The expansion sleeve limiting block 102 and the limiting notch 3 can slide relatively in the vertical direction, and after the expansion sleeve limiting block 102 is embedded into the limiting notch 3 and the circumferential position of the expansion sleeve 101 is determined, the expansion sleeve 101 moves up and down on the conical seat 105 to clamp or loosen the gear 106. Compared with the prior art, the circumferential positioning of the expansion sleeve 101 is more convenient, and the gear 106 is convenient to disassemble. As shown in fig. 3, the expansion sleeve limiting block 102 is inserted into the conical seat 105 from the radial direction of the conical seat 105, and the expansion sleeve 101 limiting block can be set to be a screw or a bolt, so as to facilitate the disassembly and assembly of the expansion sleeve limiting block 102.
Meanwhile, due to the existence of the limiting notch 3, when the upper end of the limiting notch 3 contacts with the expansion sleeve limiting block 102, the downward maximum displacement of the expansion sleeve 101 can be limited, and the expansion sleeve 101 is prevented from being damaged by expansion. If the downward movement of the expansion sleeve 101 is not limited by the matching of the limiting notch 3 and the expansion sleeve limiting block, a shaft shoulder must be arranged at the joint of the cylindrical hole 8 and the conical hole 2, and the downward maximum displacement of the expansion sleeve 101 can be limited only by arranging the shaft shoulder on the conical seat 105, so that the structures of the expansion sleeve 101 and the conical seat 105 are complicated.
Meanwhile, due to the existence of the upper notch 1 and the lower notch 4, the convenient sleeve body 6 is deformed to the maximum extent in the extrusion state, so that the gear 106 can be clamped or loosened better. The upper incision 1 and the lower incision 4 are only partially cut through the sleeve body 6 and are all cut to the bottom; meanwhile, the upper notch 1 and the lower notch 4 are cut in from different directions, so that the notch cut-off ends can be prevented from being located on the same end face, the structural strength of the cylinder body is prevented from being influenced, the upper notch 1 and the lower notch 4 are cut in from different directions, suction is carried out on the premise that the structural strength of the sleeve body 6 is guaranteed, the number of the notches can be increased, and the sleeve body 6 is guaranteed to be easy to deform.
Further, spacing breach 3 is around 6 lateral walls of the cover body a week equidistant setting, and every spacing breach 3 is equal from supreme degree of depth down.
Because the depth of each limiting notch 3 from bottom to top is equal, the upper end of each limiting notch 3 can be ensured to simultaneously contact with the expansion sleeve limiting block 102, and the expansion sleeve 101 is limited to continuously move downwards.
Furthermore, the limiting notch 3 is arranged at the opening of the lower notch 4.
Due to the structure, the limiting notch 3 is arranged at the opening of the lower notch 4, so that the situation that other positions of the sleeve body 6 are provided with more notches or notches to further influence the structural strength of the sleeve body 6 can be avoided. And the mouth change is more convenient at the position.
Further, as shown in fig. 1, the width of the limiting notch is greater than that of the lower notch 4, so that a stop position is present at the upper end of the limiting notch for cooperating with the expansion sleeve limiting block 102 to limit the maximum downward displacement of the expansion sleeve 101.
Furthermore, the upper incisions 1 and the lower incisions 4 are arranged on the sleeve body 6 in a staggered manner.
Furthermore, the end parts of the upper notch 1 and the lower notch 4 are provided with deformation holes 5, and the deformation holes 5 penetrate through the side wall of the sleeve body 6 from the radial direction of the sleeve body 6.
Because cover body 6 will often take place deformation at the during operation, if the deformation space of the end department of last incision 1 and lower incision 4 is less, then the crackle appears easily, consequently offered the deformation hole 5 at the end department of last incision 1 and lower incision 4, increase deformation space, then can avoid cover body 6 to damage.
Further, a sleeve pulling part is arranged on the inner wall of the cylindrical hole 8. The sleeve pulling part is a sleeve flange arranged on the inner wall of the cylindrical hole 8, or as shown in fig. 1, an annular groove 7 is formed in the cylindrical hole 8, and the upper side wall of the annular groove 7 is the sleeve pulling part.
In the prior art, in the clamping process, a downward external force is applied to the top end of the expansion sleeve 101, so that the expansion sleeve 101 can be conveniently moved downwards to clamp the gear 106. However, in the process of detaching the gear 106, it is inconvenient to apply an upward external force to the bottom of the expanding sleeve 101 to move the expanding sleeve 101 upward due to restrictions of an operation space and the like, so that the gear 106 is difficult to detach. Therefore, the utility model is provided with a sleeve pulling part on the inner wall of the cylindrical hole 8 to conveniently push the expansion sleeve 101 to move upwards.
As shown in fig. 3 and 4, an embodiment is disclosed in which an expansion sleeve 101 provided with a sleeve pulling part is matched with a pull rod 104 to push the expansion sleeve 101 to move up on a conical seat 105; as shown in fig. 3 and 4, an internal expansion gear clamp is disclosed, which comprises a gear mounting seat and an expansion sleeve 101; the gear mounting seat comprises a supporting seat 103, a conical seat 105 and a pull rod 104; the top of the supporting seat 103 is used for supporting the lower end face of the gear 106; the top of the conical seat 105 is small, and the bottom of the conical seat 105 is large, and the bottom of the conical seat 105 is arranged at the top of the supporting seat 103; the pull rod 104 comprises a head and a shaft, and the head is arranged at the upper end of the shaft; the club head comprises a pressing part 1041, a base part 1042 and a sleeve unloading part 1043 which are connected in sequence from top to bottom; the bottom of the sleeve removing part 1043 is connected with the upper end of the rod body; a pull rod 104 mounting hole is formed in the gear mounting seat, and the pull rod 104 mounting hole penetrates through the conical seat 105 and the supporting seat 103 from top to bottom; the rod body is inserted into the pull rod 104 mounting hole from top to bottom and can move up and down in the pull rod 104 mounting hole; the expansion sleeve 101 is sleeved on the conical seat 105 and can move up and down along the conical seat 105; an annular groove 7 is formed in the cylindrical hole 8 of the expansion sleeve 101, and the upper side wall of the annular groove 7 is a sleeve pulling part; the diameter of the pressing part 1041 > the diameter of the sleeve detaching part 1043 > the diameter of the base part 1042; the bottom of the sleeve-detaching part 1043 is provided with a chamfer angle, so that the sleeve-detaching part 1043 is in a shape of big top and small bottom, and the sleeve-detaching part 1043 can conveniently enter the expansion sleeve 101.
When the pull rod 104 moves downwards, the pressing part 1041 contacts with the top of the expanding sleeve 101, the sleeve unloading part 1043 enters the expanding sleeve 101 and is located in the annular groove, the pressing part 1041 pushes the expanding sleeve 101 to move downwards, and the conical seat 105 extrudes the expanding sleeve 101, so that the expanding sleeve 101 expands the inner hole of the gear 106; when the pull rod 104 moves upwards, the sleeve-detaching part 1043 abuts against the upper side wall of the annular groove 7, and pushes the expansion sleeve 101 to move upwards.
Example 2
As shown in FIG. 2, the utility model also discloses a spline expanding sleeve 101, which comprises the expanding sleeve 101 in the embodiment 1, wherein a ring of spline teeth 9 is arranged on the outer side wall of the sleeve body 6.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the utility model can be made, and equivalents and modifications of some features of the utility model can be made without departing from the spirit and scope of the utility model.
Claims (10)
1. An expansion sleeve is characterized in that: the sleeve comprises a sleeve body (6), wherein an inner hole is formed in the sleeve body (6), and the inner hole penetrates through the sleeve body (6) from top to bottom; the inner hole comprises a cylindrical hole (8) and a conical hole (2) which are sequentially connected from top to bottom; the diameter of the taper hole (2) is gradually increased from top to bottom; the diameter of the cylindrical hole (8) is equal to that of the upper end of the taper hole (2); the sleeve body (6) is provided with a plurality of upper notches (1) and lower notches (4) which penetrate through the side wall of the sleeve body (6) along the radial direction of the sleeve body (6), the upper notches (1) extend downwards from the top of the sleeve body (6) along the axis direction of the sleeve body (6), the upper end of each upper notch (1) is opened and penetrates through the top of the sleeve body (6), and the lower end of each upper notch (1) is cut off and is positioned at the lower part of the sleeve body (6); the lower notch (4) extends upwards from the bottom of the sleeve body (6) along the axis direction of the sleeve body (6), the lower end of the lower notch (4) is opened and penetrates through the bottom of the sleeve body (6), and the upper end of the lower notch (4) is cut off and is positioned at the upper part of the sleeve body (6); the sleeve is characterized in that at least one limiting notch (3) is formed in the side wall of the bottom of the sleeve body (6), the limiting notch (3) penetrates through the side wall of the sleeve body (6) from the radial direction of the sleeve body (6), and the lower end of the limiting notch (3) is opened and penetrates through the bottom of the sleeve body (6).
2. The expansion sleeve according to claim 1, wherein: spacing breach (3) are around the equidistant setting of cover body (6) lateral wall a week, and supreme degree of depth homogeneous phase is all equal down followed to every spacing breach (3).
3. The expansion sleeve according to claim 1, wherein: the limiting notch (3) is arranged at the opening of the lower notch (4).
4. The expansion sleeve according to claim 3, wherein: the width of the limiting notch (3) is larger than that of the lower notch (4).
5. The expansion sleeve according to claim 1, wherein: the upper cuts (1) and the lower cuts (4) are arranged on the sleeve body (6) in a staggered mode.
6. The expansion sleeve according to claim 1, wherein: and the end parts of the upper notch (1) and the lower notch (4) are provided with deformation holes (5), and the deformation holes (5) penetrate through the side wall of the sleeve body (6) from the radial direction of the sleeve body (6).
7. The expansion sleeve according to claim 1, wherein: the inner wall of the cylindrical hole (8) is provided with a sleeve pulling part.
8. The expansion sleeve according to claim 7, wherein: the sleeve pulling part is a sleeve flange arranged on the inner wall of the cylindrical hole (8).
9. The expansion sleeve according to claim 7, wherein: an annular groove (7) is formed in the cylindrical hole (8), and the upper side wall of the annular groove (7) is a sleeve pulling part.
10. A spline expander comprising an expander as claimed in any one of claims 1 to 9, wherein: the outer side wall of the sleeve body (6) is provided with a circle of spline teeth (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122234966.XU CN215433431U (en) | 2021-09-15 | 2021-09-15 | Expansion sleeve and spline expansion sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122234966.XU CN215433431U (en) | 2021-09-15 | 2021-09-15 | Expansion sleeve and spline expansion sleeve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215433431U true CN215433431U (en) | 2022-01-07 |
Family
ID=79699891
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122234966.XU Active CN215433431U (en) | 2021-09-15 | 2021-09-15 | Expansion sleeve and spline expansion sleeve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215433431U (en) |
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2021
- 2021-09-15 CN CN202122234966.XU patent/CN215433431U/en active Active
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