CN211248388U - High-precision double-taper expansion mandrel - Google Patents
High-precision double-taper expansion mandrel Download PDFInfo
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- CN211248388U CN211248388U CN201921501961.5U CN201921501961U CN211248388U CN 211248388 U CN211248388 U CN 211248388U CN 201921501961 U CN201921501961 U CN 201921501961U CN 211248388 U CN211248388 U CN 211248388U
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Abstract
The utility model discloses a high-precision double-taper expansion mandrel, which comprises a mandrel, a taper block and a taper sleeve; two ends of the taper sleeve are respectively provided with a taper hole towards the middle direction, and the two taper holes are communicated; the mandrel comprises a clamping end, a taper end, an axis adjusting end and a fastening end, wherein the clamping end, the taper end, the axis adjusting end and the fastening end are sequentially connected; the middle part of the taper block is provided with a through hole matched with the axis adjusting end, and the axis adjusting end is sleeved with the taper block; the taper sleeve is sleeved outside the taper end and the taper block, and the matching surfaces of the taper sleeve, the taper end and the taper block have the same taper; the outer diameter of the fastening end is smaller than that of the axis adjusting end, a fastening piece is sleeved outside the fastening end, and the outer diameter of the fastening piece is larger than that of the axis adjusting end; the utility model discloses the even inflation of tapering sleeve supports tight work piece, improves the precision nature of work piece, increases the dimensional stability of work piece.
Description
Technical Field
The utility model relates to a mandrel field, concretely relates to is a two tapering inflation mandrels of high accuracy.
Background
At present, no matter in high-precision machining such as precision turning, machining centers, grinding, gear hobbing and the like, an expansion type mandrel is adopted for clamping a product, and the high precision and the machining stability of the product are ensured. The expansion type mandrels generally adopted are single-taper mechanical sleeve expansion mandrels, and the problems that the surface expansion is uneven when the mandrel sleeve expands, the machining taper condition is caused, the machining stability of a product is poor and the like are caused.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a two tapering inflation mandrels of high accuracy, the even inflation of tapering sleeve supports tight work piece, improves the precision nature of work piece, increases the dimensional stability of work piece.
In order to achieve the above object, the utility model provides a high-precision double-taper expansion mandrel, which comprises a mandrel, a taper block and a taper sleeve; two ends of the taper sleeve are respectively provided with a taper hole towards the middle direction, and the two taper holes are communicated; the mandrel comprises a clamping end, a taper end, an axis adjusting end and a fastening end, wherein the clamping end, the taper end, the axis adjusting end and the fastening end are sequentially connected; the middle part of the taper block is provided with a through hole matched with the axis adjusting end, and the axis adjusting end is sleeved with the taper block; the taper sleeve is sleeved outside the taper end and the taper block, and the matching surfaces of the taper sleeve, the taper end and the taper block have the same taper; the outer diameter of the fastening end is smaller than that of the axis adjusting end, a fastening piece is sleeved outside the fastening end, and the outer diameter of the fastening piece is larger than that of the axis adjusting end.
Preferably, a circular groove is formed in one side, far away from the taper end, of the taper block; the bottom of the circular groove is provided with a guide hole; the end surface of the taper end close to the axis adjusting end is provided with a guide piece matched with the guide hole; the taper block moves towards the middle part of the taper sleeve under the action of the guide piece.
Preferably, the fastener is a precision nut; the outer part of the fastening end is provided with a thread matched with the precision nut; and locking the precision nut, and enabling the precision nut to be in contact with the taper block to enable the taper block to move.
Preferably, a gasket is sleeved at the fastening end between the precision nut and the taper block; increase area of contact, prevent to become flexible, protection tapering piece and precision nut.
Preferably, the number of the guide holes and the number of the guide pieces are two; when the taper block moves, the guide piece plays a role in guiding.
Preferably, a fixed block is fixed at one side of the clamping end close to the taper end, and the fixed block is in contact with the taper sleeve through a supporting block; after the taper block is contacted with the taper sleeve, the fixed block fixes the taper sleeve to enable the taper sleeve to move towards the radial direction; after the processing is finished, the supporting block can be used for withdrawing the taper sleeve.
Preferably, the taper sleeve is provided with a plurality of grooves; the groove increases the deformation effect of the taper sleeve, so that the effect of the taper sleeve tightly supporting the workpiece is better.
The utility model has the advantages that: the taper end of the clamping end and the taper block have double tapers, so that the taper sleeve can expand uniformly when expanded, the expansion area is increased, and the dimensional stability of a workpiece is improved; the fastener can make the tapering piece remove, extrudees the tapering sleeve, makes the tapering sleeve inflation even.
Drawings
Fig. 1 is a schematic structural view of a high-precision double-taper expansion mandrel according to the present invention;
FIG. 2 is a schematic structural view of the mandrel;
fig. 3 is a schematic structural diagram of the taper block.
Reference numerals: 1. a mandrel; 101. a clamping end; 102. a tapered end; 1021. a guide member; 103. an axis adjusting end; 104. a fastening end; 2. a taper block; 201. a circular groove; 202. a guide hole; 3. a tapered sleeve; 4. a fixed block; 401. a support block; 5. a fastener; 6. and (7) a gasket.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
Referring to fig. 1, 2 and 3, the present invention is shown to provide a high precision double taper expansion mandrel, comprising a mandrel 1, a taper block 2 and a taper sleeve 3; two ends of the taper sleeve 3 are respectively provided with a taper hole towards the middle direction, and the two taper holes are communicated; the mandrel 1 comprises a clamping end 101, a taper end 102, an axis adjusting end 103 and a fastening end 104, wherein the clamping end 101, the taper end 102, the axis adjusting end 103 and the fastening end 104 are sequentially connected; the middle part of the taper block 2 is provided with a through hole matched with the axis adjusting end 103, and the axis adjusting end 103 is sleeved with the taper block 2; the taper sleeve 3 is sleeved outside the taper end 102 and the taper block 2, and the matching surfaces of the taper sleeve 3, the taper end 102 and the taper block 2 have the same taper; the outer diameter of the fastening end 104 is smaller than that of the axis adjusting end 103, the fastening end 104 is sleeved with the fastening piece 5, and the outer diameter of the fastening piece 5 is larger than that of the axis adjusting end 103.
Further, a circular groove 201 is formed in one side, far away from the taper end 102, of the taper block 2; the bottom of the circular groove 201 is provided with a guide hole 202; the end surface of the taper end 102 close to the axis adjusting end 103 is provided with a guide part 1021 matched with the guide hole 202; the taper block 2 moves the middle of the taper sleeve 3 by the guide 1021.
Further, the fastener 5 is a precision nut; the fastening end 104 is externally provided with a thread matched with the precision nut; and locking the precision nut, and enabling the precision nut to be in contact with the taper block 2 to enable the taper block 2 to move.
Further, a gasket 6 is sleeved at the fastening end 104 between the precision nut and the taper block 2; increase area of contact, prevent not hard up, protection tapering piece 2 and precision nut.
Further, the number of the guide holes 202 and the guide members 1021 is two; preferably, the guiding element 1021 is a bolt, and the guiding element 1021 guides the taper block 2 when the taper block 2 moves, and facilitates to withdraw the taper block 2 from the taper sleeve 3 after the machining is completed.
Further, a fixing block 4 is fixed on one side of the clamping end 101 close to the taper end 102, and the fixing block 4 is in contact with the taper sleeve 3 through a supporting block 401; after the taper block 2 is contacted with the taper sleeve 3, the fixed block 4 fixes the taper sleeve 3, so that the taper sleeve 3 moves towards the radial direction; after the machining is finished, the supporting block 401 can be used for withdrawing the taper sleeve 3.
Further, the taper sleeve 3 is provided with a plurality of grooves; the groove increases the deformation effect of the taper sleeve 3, so that the effect of the taper sleeve 3 tightly supporting the workpiece is better.
The utility model discloses a theory of operation: after the clamping end 101 of the mandrel 1 is clamped on the processing machine, the workpiece is sleeved outside the taper sleeve 3. The fastener 5 pushes the taper block 2 to move, and under the guiding action of the guiding piece 1021, the moving block can extrude the taper sleeve 3 when the taper end 102 and the taper block 2 move axially because the matching surfaces of the taper sleeve 3, the taper end 102 and the taper block 2 have certain taper, so that the taper sleeve 3 moves in the radial direction to support the workpiece tightly.
The utility model has the advantages that: the taper end of the clamping end and the taper block have double tapers, so that the taper sleeve can expand uniformly when expanded, the expansion area is increased, and the dimensional stability of a workpiece is improved; the fastener can make the tapering piece remove, extrudees the tapering sleeve, makes the tapering sleeve inflation even.
While the preferred embodiments of the present invention have been described, the present invention is not limited to the above embodiments, and those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention, and such equivalent modifications or substitutions are intended to be included within the scope of the present invention as defined by the appended claims.
Claims (7)
1. A high-precision double-taper expansion mandrel is characterized by comprising a mandrel, a taper block and a taper sleeve; two ends of the taper sleeve are respectively provided with a taper hole towards the middle direction, and the two taper holes are communicated; the mandrel comprises a clamping end, a taper end, an axis adjusting end and a fastening end, wherein the clamping end, the taper end, the axis adjusting end and the fastening end are sequentially connected; the middle part of the taper block is provided with a through hole matched with the axis adjusting end, and the axis adjusting end is sleeved with the taper block; the taper sleeve is sleeved outside the taper end and the taper block, and the matching surfaces of the taper sleeve, the taper end and the taper block have the same taper; the outer diameter of the fastening end is smaller than that of the axis adjusting end, a fastening piece is sleeved outside the fastening end, and the outer diameter of the fastening piece is larger than that of the axis adjusting end.
2. A high precision double taper expansion mandrel as claimed in claim 1, wherein said taper block is provided with a circular groove on the side away from said taper end; the bottom of the circular groove is provided with a guide hole; and a guide piece matched with the guide hole is arranged on the end surface of the taper end close to the axis adjusting end.
3. A high precision dual taper expansion mandrel as claimed in claim 1 wherein said fasteners are precision nuts; and the outside of the fastening end is provided with a thread matched with the precision nut.
4. A high precision dual taper expansion mandrel as claimed in claim 3, wherein said fastening end is provided with a spacer between said precision nut and said taper block.
5. A high accuracy dual taper expansion mandrel as claimed in claim 2 wherein said pilot holes and said guides are two in number.
6. A high precision double taper expansion mandrel as claimed in claim 1, wherein said holding end has a fixed block fixed to a side thereof adjacent to said tapered end, said fixed block contacting said tapered sleeve through a support block.
7. A high precision dual taper expansion mandrel as claimed in claim 1 wherein said tapered sleeve is provided with a plurality of grooves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921501961.5U CN211248388U (en) | 2019-09-10 | 2019-09-10 | High-precision double-taper expansion mandrel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921501961.5U CN211248388U (en) | 2019-09-10 | 2019-09-10 | High-precision double-taper expansion mandrel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211248388U true CN211248388U (en) | 2020-08-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921501961.5U Active CN211248388U (en) | 2019-09-10 | 2019-09-10 | High-precision double-taper expansion mandrel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211248388U (en) |
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2019
- 2019-09-10 CN CN201921501961.5U patent/CN211248388U/en active Active
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