CN220881940U - Coreless shaft roller positioning fixture - Google Patents
Coreless shaft roller positioning fixture Download PDFInfo
- Publication number
- CN220881940U CN220881940U CN202322549590.0U CN202322549590U CN220881940U CN 220881940 U CN220881940 U CN 220881940U CN 202322549590 U CN202322549590 U CN 202322549590U CN 220881940 U CN220881940 U CN 220881940U
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- taper sleeve
- positioning
- sleeve
- shaft
- positioning shaft
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- 238000005299 abrasion Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000004807 localization Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model discloses a coreless shaft roller positioning fixture which comprises a positioning mandrel, an inner taper sleeve and an outer taper sleeve, wherein the positioning mandrel comprises a positioning shaft, an external thread is arranged on the outer wall of the circumference of the tail end of the positioning shaft, a tip shaft is arranged at the end face of the initial end of the positioning shaft, and the outer diameter of the tip shaft is larger than that of the positioning shaft; two inner taper sleeves which are identical in structure and are oppositely arranged are nested on the positioning shaft in a sliding manner, and a first opening is formed in the inner taper sleeve along the direction of a bus of the outer wall of the inner taper sleeve; an outer taper sleeve is nested at the periphery of the positioning shaft, the outer taper sleeve is of a hollow cylinder structure, conical surfaces matched with the inner taper sleeve are arranged at two ends of the inner wall of the outer taper sleeve, and the outer wall of the inner taper sleeve is attached to the conical surfaces at two ends of the outer taper sleeve; a second opening is formed in the circumferential side wall of the outer cone sleeve along the axial direction of the outer cone sleeve; the external thread of the positioning shaft is connected with the locking nut in a threaded manner, and the utility model has the advantages of more stable tensioning and clamping, simple structure, convenient operation, small clamp abrasion and the like.
Description
Technical Field
The utility model relates to the technical field of hollow pipe fitting clamps, in particular to a coreless shaft roller positioning clamp.
Background
The utility model discloses a clamping device for elastic clamping at two ends of a long hole, particularly discloses a clamping device for elastic clamping at two ends of a long hole, which is characterized in that the elastic clamping device is extruded by taper sleeves at two ends of a mandrel to expand and deform the elastic clamping device for the long hole, but the deformation of the elastic clamping device is generated by the relative sliding of the taper sleeves and the elastic clamping device, and the taper sleeves at two sides are different in structure, so that the problems of poor stability, complex structure, inconvenient operation, high clamp abrasion, short service life and the like of the clamping device for the elastic clamping device for the non-core shaft roller exist.
Disclosure of utility model
The utility model aims to overcome the existing defects, and provides the coreless roller positioning clamp which is more stable in tensioning and clamping of the coreless roller, better in clamping effect, convenient to process, simple in structure, convenient to operate, small in clamp abrasion and long in service life, and can effectively solve the problems in the background art.
In order to achieve the above purpose, the present utility model provides the following technical solutions: the positioning fixture for the coreless roller comprises a positioning mandrel, an inner taper sleeve and an outer taper sleeve, wherein the positioning mandrel comprises a positioning shaft, an external thread is arranged on the circumferential outer wall of the tail end of the positioning shaft, a tip shaft is arranged on the end face of the initial end of the positioning shaft, and the outer diameter of the tip shaft is larger than that of the positioning shaft; two inner taper sleeves which are identical in structure and are oppositely arranged are nested on the positioning shaft in a sliding manner, and a first opening is formed in the inner taper sleeve along the direction of a bus of the outer wall of the inner taper sleeve; an outer taper sleeve is nested at the periphery of the positioning shaft, the outer taper sleeve is of a hollow cylinder structure, conical surfaces matched with the inner taper sleeve are arranged at two ends of the inner wall of the outer taper sleeve, and the outer wall of the inner taper sleeve is attached to the conical surfaces at two ends of the outer taper sleeve; a second opening is formed in the circumferential side wall of the outer cone sleeve along the axial direction of the outer cone sleeve; and the external thread of the positioning shaft is connected with a locking nut in a threaded manner.
Further, the first opening and the second opening are of straight line through groove structures, two ends of the first opening penetrate through the inner taper sleeve, and two ends of the second opening penetrate through the outer taper sleeve.
Further, a center hole is formed in the axis of the end face of the initial end of the center shaft.
Furthermore, the end surfaces at two ends of the inner taper sleeve and the outer taper sleeve are respectively provided with a chamfer structure.
Compared with the prior art, the utility model has the beneficial effects that: this coreless roller positioning fixture makes the outside deformation that expands takes place simultaneously for the inner cone cover of both sides through screwing lock nut, forces outer cone cover also to take place the expansion deformation through the expansion deformation of inner cone cover, and then make outer cone cover rise to tightly press from both sides to coreless roller, the conical surface closely laminates rather than the inner wall in inner cone cover all the time when outer cone cover takes place the expansion deformation, and the inner cone cover takes place relative slip with outer cone cover, it is more stable to rise tightly press from both sides coreless roller, the centre gripping is effectual, the anchor clamps wearing and tearing are little, long service life, the structure of inner cone cover is the same, processing is convenient, and can exchange the use, this positioning clamp simple structure, convenient operation.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a cross-sectional view of a localization fixture of the present utility model;
FIG. 3 is a schematic view of the inner cone sleeve structure of the present utility model;
FIG. 4 is a schematic view of the outer cone structure of the present utility model;
FIG. 5 is a schematic view of a positioning mandrel according to the present utility model;
FIG. 6 is a schematic view of the present utility model in use;
fig. 7 is a cross-sectional view of the present utility model in use.
In the figure: a positioning mandrel 1, a positioning shaft 11, an external thread 111, a 12-tip shaft 121-tip hole 2-inner taper sleeve 21-opening I, an outer taper sleeve 3-opening II 31-opening II and a locking nut 4.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Examples
Referring to fig. 1-7, the present utility model provides a technical solution: the positioning clamp for the coreless roller comprises a positioning mandrel 1, an inner cone sleeve 2 and an outer cone sleeve 3, wherein the positioning mandrel 1 comprises a positioning shaft 11, an external thread 111 is arranged on the outer wall of the circumference of the tail end of the positioning shaft 11, a tip shaft 12 is arranged on the end face of the initial end of the positioning shaft 11, and the outer diameter of the tip shaft 12 is larger than that of the positioning shaft 11; two inner taper sleeves 2 which are identical in structure and are oppositely arranged are nested on the positioning shaft 11 in a sliding manner, and a first opening 21 is formed in the inner taper sleeve 2 along the direction of a bus of the outer wall of the inner taper sleeve; the outer periphery of the positioning shaft 11 is nested with an outer cone sleeve 3, the outer cone sleeve 3 is of a hollow cylinder structure, both ends of the inner wall of the outer cone sleeve 3 are provided with conical surfaces matched with the inner cone sleeve 2, and the outer wall of the inner cone sleeve 2 is attached to the conical surfaces at both ends of the outer cone sleeve 3; a second opening 31 is formed in the circumferential side wall of the outer cone sleeve 3 along the axial direction of the outer cone sleeve; the first opening 21 and the second opening 31 are of straight line through groove structures, two ends of the first opening 21 penetrate through the inner taper sleeve 2, and two ends of the second opening 31 penetrate through the outer taper sleeve 3; the external thread 111 of the positioning shaft 11 is in threaded connection with a lock nut 4.
Working principle:
One inner cone sleeve 2 is nested on a positioning shaft 11 of a positioning mandrel 1, the end face of the inner cone sleeve 2 is attached to the end face of the tail end of a jacking shaft 12, an outer cone sleeve 3 is nested on the periphery of the inner cone sleeve 2, then the other inner cone sleeve 2 is nested on the positioning shaft 11 in a sliding mode, a first opening 21 is formed in the inner cone sleeve 2, a locking nut 4 is connected in a threaded mode at an outer thread 111 of the positioning shaft 11, the inner end face of the locking nut 4 is screwed to enable the inner cone sleeve 2 on the outer side to be tightly attached to the inner cone sleeve 2 on the outer side, along with movement of the locking nut 4, outer walls of the inner cone sleeves 2 on the two sides are evenly attached to conical faces on two ends of the outer cone sleeve 3, a mandrel-free roller is nested on the outer cone sleeve 3, the locking nut 4 is continuously screwed, the inner cone sleeve 2 is subjected to the external expansion deformation through the pressure exerted on the outer inner cone sleeve 2 and the jacking shaft 12, and the inner cone sleeve 2 on the two sides simultaneously expands outwards due to the fact that a second opening 31 is formed in the outer cone sleeve 3, and the inner cone sleeve 3 is subjected to the elastic expansion deformation of the mandrel-free roller.
The coreless shaft roller positioning fixture disclosed by the embodiment enables the inner cone sleeves 2 on two sides to simultaneously deform in an outward expansion manner by screwing the lock nut 4, the outer cone sleeve 3 is forced to expand and deform by the expansion deformation of the inner cone sleeve 2, so that the outer cone sleeve 3 tightly clamps the coreless shaft roller, the inner cone sleeve 2 is tightly attached to the conical surface of the inner wall of the coreless shaft roller all the time when the outer cone sleeve 3 expands and deforms, the inner cone sleeve 2 does not slide relative to the outer cone sleeve 3, the coreless shaft roller is more stable in expansion clamping, the clamping effect is good, the inner cone sleeve 2 has the same structure, the processing is convenient, the positioning and clamping structures are simple, and the operation is convenient.
Further, a center hole 121 is formed at the axial center of the end face of the start end of the center shaft 12, and the center hole 121 is used for positioning a center seat of the grinding machine.
Further, the end faces of the two ends of the inner cone sleeve 2 and the outer cone sleeve 3 are respectively provided with a chamfer structure, the inner cone sleeve 2 and the outer cone sleeve 3 are conveniently installed through the chamfer structures, and abrasion generated when the inner cone sleeve 2 and the outer cone sleeve 3 are installed and detached is small.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. The utility model provides a no mandrel roller positioning fixture, includes location dabber, interior taper sleeve and outer taper sleeve, its characterized in that: the positioning mandrel comprises a positioning shaft, an external thread is arranged on the outer wall of the circumference of the tail end of the positioning shaft, a tip shaft is arranged on the end face of the initial end of the positioning shaft, and the outer diameter of the tip shaft is larger than that of the positioning shaft; two inner taper sleeves which are identical in structure and are oppositely arranged are nested on the positioning shaft in a sliding manner, and a first opening is formed in the inner taper sleeve along the direction of a bus of the outer wall of the inner taper sleeve; an outer taper sleeve is nested at the periphery of the positioning shaft, the outer taper sleeve is of a hollow cylinder structure, conical surfaces matched with the inner taper sleeve are arranged at two ends of the inner wall of the outer taper sleeve, and the outer wall of the inner taper sleeve is attached to the conical surfaces at two ends of the outer taper sleeve; a second opening is formed in the circumferential side wall of the outer cone sleeve along the axial direction of the outer cone sleeve; and the external thread of the positioning shaft is connected with a locking nut in a threaded manner.
2. A coreless roll positioning fixture as claimed in claim 1, wherein: the first opening and the second opening are of straight line through groove structures, two ends of the first opening penetrate through the inner taper sleeve, and two ends of the second opening penetrate through the outer taper sleeve.
3. A coreless roll positioning fixture as claimed in claim 1, wherein: and a center hole is formed in the axis center of the end face of the initial end of the center shaft.
4. A coreless roll positioning fixture as claimed in claim 1, wherein: the end surfaces of the two ends of the inner taper sleeve and the outer taper sleeve are respectively provided with a chamfer structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322549590.0U CN220881940U (en) | 2023-09-20 | 2023-09-20 | Coreless shaft roller positioning fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322549590.0U CN220881940U (en) | 2023-09-20 | 2023-09-20 | Coreless shaft roller positioning fixture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220881940U true CN220881940U (en) | 2024-05-03 |
Family
ID=90841632
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322549590.0U Active CN220881940U (en) | 2023-09-20 | 2023-09-20 | Coreless shaft roller positioning fixture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220881940U (en) |
-
2023
- 2023-09-20 CN CN202322549590.0U patent/CN220881940U/en active Active
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