CN205798481U - A kind of expansible mandrel - Google Patents
A kind of expansible mandrel Download PDFInfo
- Publication number
- CN205798481U CN205798481U CN201620360722.2U CN201620360722U CN205798481U CN 205798481 U CN205798481 U CN 205798481U CN 201620360722 U CN201620360722 U CN 201620360722U CN 205798481 U CN205798481 U CN 205798481U
- Authority
- CN
- China
- Prior art keywords
- mandrel
- nut
- out against
- workpiece
- stretching screw
- Prior art date
- 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.)
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Abstract
The utility model discloses a kind of expansible mandrel, including a mandrel, described mandrel includes installation end, piece-holder end and fixing end；Being provided with an installing hole inside described installation end, the outer surface of described fixing end is external thread structure；One stretching screw being fixed in machine tool chief axis by mandrel installation end, one end of described stretching screw is arranged on the inside of mandrel installation end installing hole；The sheathed baffle plate of the other end of described stretching screw, stretching screw is clamped on machine tool chief axis by baffle plate, and is fixed by nut；One be arranged on piece-holder end first hold out against nut；One be arranged on that workpiece fixes on end second hold out against nut；First holds out against nut and the second region holding out against between nut for installing workpiece；First holds out against nut and second holds out against and is additionally provided with a swollen heart set between nut.After this utility model makes workpiece be installed in mandrel, position immobilizes, it is ensured that the geometric accuracy after work pieces process.
Description
Technical field
This utility model relates to mandrel, particularly to a kind of expansible mandrel.
Background technology
Use mandrel processing part the most universal in manufacturing industry, it is ensured that the axiality of the geometric element of part.
But the mandrel generally used is in order to ensure that fit clearance minimizes, spindle taper, spindle taper is all used to have
One universal shortcoming, it is simply that workpiece axial position location in mandrel is not fixed, this gives and uses Digit Control Machine Tool
Upper processing brings the biggest inconvenience；So design both can guarantee that the fit clearance of workpiece and mandrel, can fix again
Workpiece position in mandrel, the convenient new spindle using Digit Control Machine Tool to process is necessary.
The spindle taper currently used, the hole dimension work in-process coordinated with mandrel due to workpiece is inevitable
Having error, after installing with mandrel, mandrel is not fixed with the relative position of workpiece, is illustrated in fig. 1 shown below: by
A margin of tolerance has been allowed in workpiece hole, so after workpiece 100 is installed in mandrel 200, sometimes in reality
Line position, sometimes at dotted line position, this brings greatly inconvenience to digital control processing.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of simple in construction, it is possible to after ensureing work pieces process
The expansible mandrel of geometric accuracy.
For reaching above-mentioned purpose, the technical solution of the utility model is as follows:
A kind of expansible mandrel, including
One mandrel, described mandrel includes installation end, piece-holder end and fixing end；Inside described installation end
Being provided with an installing hole, the outer surface of described fixing end is external thread structure；
One stretching screw being fixed in machine tool chief axis by mandrel installation end, one end of described stretching screw is installed
Inside at mandrel installation end installing hole；The sheathed baffle plate of the other end of described stretching screw, stretching screw leads to
Cross baffle plate to be clamped on machine tool chief axis, and be fixed by nut；
One be arranged on piece-holder end first hold out against nut；
One be arranged on that workpiece fixes on end second hold out against nut；First hold out against nut and second hold out against nut it
Between region be used for workpiece is installed；First holds out against nut and second holds out against and is additionally provided with a swollen heart set between nut.
In an embodiment of the present utility model, described mandrel installation end is arranged with lathe spacer shell.
In an embodiment of the present utility model, between described nut and baffle plate, it is provided with elastic washer.
By technique scheme, the beneficial effects of the utility model are:
After this utility model makes workpiece be installed in mandrel, position immobilizes, it is ensured that workpiece and mandrel zero
Gap positions, it is ensured that the geometric accuracy after work pieces process；Ensure that each workpiece and mandrel are with mandrel
The shaft shoulder positions such that it is able to use Digit Control Machine Tool batch machining to produce.
Accompanying drawing explanation
In order to be illustrated more clearly that this utility model embodiment or technical scheme of the prior art, below by right
In embodiment or description of the prior art, the required accompanying drawing used is briefly described, it should be apparent that below,
Accompanying drawing in description is only embodiments more of the present utility model, comes for those of ordinary skill in the art
Say, on the premise of not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the scheme of installation of workpiece and existing mandrel；
Fig. 2 is the structural representation that workpiece is arranged in this utility model mandrel；
Numeral and the corresponding component title represented by letter in figure:
100, workpiece 200, mandrel 210, installation end 211, lathe spacer shell 220, workpiece
Bare terminal end 230, fixing end 240, stretching screw 250, baffle plate 260, nut 270, elasticity
Packing ring 280, first hold out against nut 290, second hold out against nut 300, the swollen heart set 400, lathe master
Axle.
Detailed description of the invention
For the technological means making this utility model realize, creation characteristic, reach purpose and be readily apparent from effect
Understand, below in conjunction with being specifically illustrating, this utility model is expanded on further.
Shown in Figure 2, the utility model discloses a kind of expansible mandrel, including a mandrel 200,
Mandrel 200 includes installation end 210, piece-holder end 22 and fixing end 230；On installation end 210 sheathed
Having lathe spacer shell 211, be provided with an installing hole inside installation end, the outer surface of fixing end is external thread structure；
One stretching screw 240 that mandrel installation end is fixed in machine tool chief axis 400, one end of stretching screw 240
It is arranged on the inside of mandrel installation end installing hole；The sheathed baffle plate 250 of the other end of stretching screw 240, draws
Tight screw rod 240 is clamped on machine tool chief axis 400 by baffle plate 250, and is fixed by nut 260,
Elastic washer 270 it is provided with between nut 260 and baffle plate 250；One the first top being arranged on piece-holder end
Jack panel 280；One be arranged on that workpiece fixes on end second hold out against nut 290；First holds out against nut and
Two hold out against the region between nut for installing workpiece；First holds out against nut and second holds out against and also sets between nut
There is a swollen heart set 300, expansion sleeve interlock and is provided with the wide groove of 2mm, easy spreading, but do not reach end face,
Ensure that the entirety of set does not dissipates.
This utility model is installed and operation principle is as follows:
Mandrel 200 is installed in machine tool chief axis 400, with turnbuckle 240 by lathe spacer shell 211
By baffle plate 250, elastic washer 270, finally with nut 260, mandrel 200 is tightly held in lathe
In main shaft 400, then hold out against nut 280 by first and be screwed in mandrel 200, swollen heart set 300 is installed to
In mandrel 200, then being enclosed within by workpiece 100 on swollen heart set 300, the most swollen heart set 300 is in compact state,
Workpiece can be directly against on the shaft shoulder face of mandrel 200, then holds out against nut 290 by second and screws in mandrel 200
And tighten, second holds out against nut 290 makes swollen heart set 300 slide along mandrel inwards, due to mandrel 200 He
It is taper that the swollen heart overlaps 300 cooperation faces, so swollen heart set 300 spreading while sliding inwards, is supportted by workpiece
Tightly, thus be fixed in mandrel；Even if hole, workpiece location varies, but can be close at the mandrel shaft shoulder
On face；After work pieces process is complete, first unclamps second and hold out against nut 290, then rotate first and hold out against nut 280,
Workpiece 100 and swollen heart set 300 and mandrel 200 is made to occur relative movement, swollen heart set 300 to restore to the original state, with
Workpiece separates, thus unloads workpiece.
Of the present utility model ultimate principle and principal character and of the present utility model excellent have more than been shown and described
Point.Skilled person will appreciate that of the industry, this utility model is not restricted to the described embodiments, above-mentioned reality
Execute and principle of the present utility model is simply described, without departing from this utility model spirit described in example and description
On the premise of scope, this utility model also has various changes and modifications, and these changes and improvements both fall within
In the range of claimed this utility model.This utility model claims scope by appending claims
And equivalent defines.
Claims (3)
1. an expansible mandrel, it is characterised in that include
One mandrel, described mandrel includes installation end, piece-holder end and fixing end；Inside described installation end
Being provided with an installing hole, the outer surface of described fixing end is external thread structure；
One stretching screw being fixed in machine tool chief axis by mandrel installation end, one end of described stretching screw is installed
Inside at mandrel installation end installing hole；The sheathed baffle plate of the other end of described stretching screw, stretching screw leads to
Cross baffle plate to be clamped on machine tool chief axis, and be fixed by nut；
One be arranged on piece-holder end first hold out against nut；
One be arranged on that workpiece fixes on end second hold out against nut；First hold out against nut and second hold out against nut it
Between region be used for workpiece is installed；First holds out against nut and second holds out against and is additionally provided with a swollen heart set between nut.
A kind of expansible mandrel the most according to claim 1, it is characterised in that described mandrel is pacified
It is arranged with lathe spacer shell on dress end.
A kind of expansible mandrel the most according to claim 1, it is characterised in that described nut with
Elastic washer it is provided with between baffle plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620360722.2U CN205798481U (en) | 2016-04-26 | 2016-04-26 | A kind of expansible mandrel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620360722.2U CN205798481U (en) | 2016-04-26 | 2016-04-26 | A kind of expansible mandrel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205798481U true CN205798481U (en) | 2016-12-14 |
Family
ID=58144734
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620360722.2U Expired - Fee Related CN205798481U (en) | 2016-04-26 | 2016-04-26 | A kind of expansible mandrel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205798481U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107971510A (en) * | 2017-10-21 | 2018-05-01 | 福州大学 | Ensure the expansive force spindle unit and its method of work of miniature workpiece concentricity |
-
2016
- 2016-04-26 CN CN201620360722.2U patent/CN205798481U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107971510A (en) * | 2017-10-21 | 2018-05-01 | 福州大学 | Ensure the expansive force spindle unit and its method of work of miniature workpiece concentricity |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161214 Termination date: 20170426 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |