CN208147403U - Concentric tension fixture - Google Patents
Concentric tension fixture Download PDFInfo
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- CN208147403U CN208147403U CN201820532151.5U CN201820532151U CN208147403U CN 208147403 U CN208147403 U CN 208147403U CN 201820532151 U CN201820532151 U CN 201820532151U CN 208147403 U CN208147403 U CN 208147403U
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- tension
- briquetting
- fixture
- central axis
- concentric
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Abstract
The utility model provides a kind of concentric tension fixture, and the concentric tension fixture includes pedestal, central axis, tension component and briquetting；The central axis is fixed on the pedestal；The tension component is sheathed on the central axis and including multiple tension piece around the central axis, and the tension piece separates between each other；The briquetting is set to one end of the tension component and restrains towards the tension component, and the briquetting is inserted in the tension component.Due to briquetting one end and towards tension component restrain, when user applies external force to briquetting, when so that briquetting is mobile towards tension component, mutual separable tension piece can be moved along the radial direction of central axis towards workpiece, to be resisted against on workpiece and provide a tension with clamping workpiece.The workpiece that through-hole is had by using the concentric tension fixture clamping, so that the processing of the outer profile of the workpiece with through-hole not will receive the influence of fixture, to greatly reduce manufacturing procedure.
Description
Technical field
The utility model relates to field of machining, in particular to a kind of concentric tension fixture.
Background technique
In general, the clamping dependence of the workpiece for having through-hole is precision the most common in the market in machining
Flat-nose pliers.It when the machined surface of workpiece needs to change, then needs user first to disassemble workpiece, replaces a face, then will
Piece-holder is on precision flatnosed pliers.When the workpiece shapes for needing to process are complex, repeatedly replacement clamping just may require that
Face and the repeatedly position of calibration workpiece, so that manufacturing procedure is more cumbersome and complicated.
Utility model content
The technical problems to be solved in the utility model is to overcome in the prior art due to using common precision flatnosed pliers
Caused by the cumbersome and complicated defect of manufacturing procedure, a kind of concentric tension fixture is provided.
The utility model is to solve above-mentioned technical problem by following technical proposals：
A kind of concentric tension fixture, the concentric tension fixture include pedestal, central axis, tension component and briquetting；
The central axis is fixed on the pedestal；
The tension component is sheathed on the central axis and including multiple tension piece around the central axis, described to rise
Power piece separates between each other；
The briquetting is set to one end of the tension component and restrains towards the tension component, and the briquetting is inserted in institute
It states in tension component.
Preferably, the concentric tension fixture includes two briquettings, two briquettings are respectively arranged on the tension
The both ends of component.
In the technical scheme, by using two briquettings, so that tension component is easier to be softened.
Preferably, the concentric tension fixture further includes the first positioning pin and the second positioning pin；
First set pin sleeve is set to the central axis, and between the pedestal and the briquetting, and described first
Positioning pin is removably attachable to the pedestal and has positioning surface in the side opposite with the pedestal；
Second positioning pin is connected to the pedestal, and neighbouring first positioning pin is arranged, second positioning pin
For cooperating with the pin hole on the workpiece of the concentric tension fixture clamping.
Preferably, forming a step surface on first positioning pin, the step surface is the positioning surface.
In the technical scheme, by using the positioning surface on the first positioning pin, the second positioning pin and the first positioning pin,
To meet the requirement of two pin one sides required for localization method, to guarantee positioning accuracy.
Preferably, the concentric tension fixture further includes supporting block, the tail end of the supporting block is connected to the pedestal, institute
The head end for stating supporting block is equipped with second positioning pin.
In the technical scheme, the pin hole of workpiece has certain height relative to pedestal, by using supporting block to pad
High second positioning pin enables the second positioning pin to cooperate with the pin hole on workpiece.
Preferably, the supporting block is restrained from the tail end towards the head end.
In the technical scheme, by using from tail end towards the convergent supporting block of head end, so that supporting block has one
While fixed structural strength, the weight of supporting block is alleviated, to reduce production cost.
Preferably, the concentric tension fixture further includes lock screw, the end face of the head end of the central axis is equipped with screw
Hole, the lock screw are arranged in the briquetting and are connected to the screw hole, and the lock screw is used for towards the center
Axis presses the briquetting.
In the technical scheme, user presses briquetting by rotation lock screw, lock screw, so that briquetting is in
Mandrel is mobile, to strut tension component, so that tension fixture being capable of constantly clamping workpiece with one heart.
Preferably, the concentric tension fixture further includes lock washer, the lock screw is arranged in the lock washer,
The lock washer is located between the briquetting and the lock screw, and the lock screw towards the central axis for pressing
The lock washer is pressed to press the briquetting.
In the technical scheme, by using lock washer, the forced area between lock screw and briquetting is increased, is subtracted
Small pressure, to play the role of protecting lock screw and briquetting.
Preferably, the concentric tension fixture further includes rubber ring, the rubber ring is located on the tension component and is used in combination
In gathering the tension piece mutually.
In the technical scheme, by using rubber ring, tension piece is mutually gathered, avoids multiple tension pieces
When being arranged workpiece generate dislocation or be scattered when dismantle workpiece so that installation and replace workpiece it is more convenient.
Preferably, the periphery of the tension component is equipped with annular groove, the rubber ring is embedded in the annular groove；
The depth of the annular groove is greater than the diameter in the section of the rubber ring.
In the technical scheme, the annular groove of the diameter of rubber ring cross-section is greater than by setting depth, buries rubber ring
Enter in annular groove, avoid the reduction of the contact area of tension component and workpiece, rises needed for clamping workpiece to ensure that
Power.
Preferably, the quantity of the tension piece is four.
In the technical scheme, when one timing of pressure that briquetting applies, relative to the tension piece for using other quantity, pass through
Using four tension pieces, enable to the frictional force between tension component and workpiece maximum.
On the basis of common knowledge of the art, above-mentioned each optimum condition, can any combination to get the utility model respectively compared with
Good example.
The positive effect of the utility model is：
Due to briquetting one end and towards tension component restrain, when user to briquetting apply external force so that briquetting direction
When tension component is mobile, mutual separable tension piece can be moved along the radial direction of central axis towards workpiece, thus
It is resisted against on workpiece and provides a tension with clamping workpiece.The workpiece of through-hole is had by using the concentric tension fixture clamping,
So that the processing of the outer profile of the workpiece with through-hole not will receive the influence of fixture, to greatly reduce manufacturing procedure.
Detailed description of the invention
Fig. 1 is the decomposition texture schematic diagram of the concentric tension fixture and workpiece according to an embodiment of the utility model.
Description of symbols
Pedestal 1
Central axis 2
Tension component 3, tension piece 31, annular groove 32
Briquetting 4
Workpiece 5
Pin hole 51
Through-hole 52
Rubber ring 6
First positioning pin 7, positioning surface 71
Second positioning pin 8
Supporting block 9
Lock screw 10
Lock washer 11
Specific embodiment
Below by way of examples, and in conjunction with attached drawing to become apparent from completely illustrate the utility model.
As shown in Figure 1, tension fixture includes pedestal 1, central axis 2, tension component 3 and briquetting 4 with one heart.Central axis 2 is fixed
In pedestal 1, tension component 3 is sheathed on central axis 2 and including multiple tension piece 31 around central axis 2, and tension piece 31 is mutual
Between separate.Briquetting 4 is set to one end of tension component 3 and restrains towards tension component 3, and briquetting 4 is inserted in tension component 3
In.
Due to briquetting 4 one end and towards tension component 3 restrain, when user to briquetting 4 apply external force so that briquetting 4
When mobile towards tension component 3, mutual separable tension piece 31 can along central axis 2 radial direction towards workpiece 5
It is mobile, to be resisted against on workpiece 5 and provide a tension with clamping workpiece 5.It is had by using the concentric tension fixture clamping
The workpiece 5 of through-hole, so that the processing of the outer profile of the workpiece 5 with through-hole 52 not will receive the influence of fixture, to subtract significantly
Manufacturing procedure is lacked.Briquetting 4 is preferably conical by its shape.
In the present embodiment, concentric tension fixture includes two briquettings 4, and two briquettings 4 are respectively arranged on the two of tension component 3
End, so that tension component 3 is easier to be softened.
The quantity of tension piece 31 is four.When one timing of pressure that briquetting 4 applies, relative to the tension for using other quantity
Piece 31 enables to the frictional force between tension component 3 and workpiece 5 maximum by using four tension pieces 31.
Rubber ring 6 is located on tension component 3 and for so that tension piece 31 is mutually gathered, so as to avoid multiple tension pieces
31 when being arranged workpiece 5 generate dislocation or be scattered when dismantle workpiece 5 so that installation and replace workpiece 5 it is more convenient.
In addition, the periphery of tension component 3 is equipped with annular groove 32, rubber ring 6 is embedded in annular groove 32.Annular groove
The diameter that 32 depth is greater than the section of rubber ring 6 avoids tension portion so that rubber ring 6 is wholly embedded into annular groove 32
The reduction of the contact area of part 3 and workpiece 5, thus tension needed for ensure that clamping workpiece 5.
In addition, the first positioning pin 7 is sheathed on central axis 2, and between pedestal 1 and briquetting 4, the first positioning pin 7 is removable
It is connected to pedestal 1 with unloading and there is positioning surface 71 in the side opposite with pedestal 1.In the present embodiment, shape on the first positioning pin 7
At a step surface, step surface is positioning surface 71
Second positioning pin 8 may connect to pedestal 1, and neighbouring first positioning pin 7 is arranged, the second positioning pin 8 be used for it is concentric
Pin hole 51 on the workpiece 5 of tension fixture clamping cooperates.
By using the positioning surface 71 on the first positioning pin 7, the second positioning pin 8 and the first positioning pin 7, to meet positioning
The requirement of two pin one sides required for method, to guarantee positioning accuracy.
In the present embodiment, the second positioning pin 8 is connected to pedestal 1 by supporting block 9, and the tail end of supporting block 9 is connected to bottom
The head end of seat 1, supporting block 9 is equipped with the second positioning pin 8.The pin hole 51 of workpiece 5 has certain height relative to pedestal 1, passes through
Using supporting block 9 with padded second positioning pin 8, the second positioning pin 8 is enable to cooperate with the pin hole 51 on workpiece 5.
In addition, supporting block 9 is restrained from its tail end towards head end, so that supporting block 9 is with the same of certain structural strength
When, the weight of supporting block 9 is alleviated, to reduce the production cost of the concentric tension fixture.
In addition, tension fixture further includes lock screw 10 with one heart, the end face of the head end of central axis 2 is equipped with screw hole, locking
Screw 10 is arranged in briquetting 4 and is connected to the screw hole, and lock screw 10 is used to press briquetting 4 towards central axis 2.User is logical
The tight screw 10 of rotation lock is crossed, lock screw 10 presses briquetting 4, so that briquetting 4 is mobile towards central axis 2, to strut tension portion
Part 3, so that tension fixture being capable of constantly clamping workpiece 5 with one heart.
In addition, lock washer 11 is located between briquetting 4 and lock screw 10, lock screw 10 is arranged in lock washer
11, lock screw 10 is used to press lock washer 11 towards central axis 2 to press briquetting 4.By using lock washer 11, increase
Forced area between lock screw 10 and briquetting 4, reduces pressure, to play protection lock screw 10 and briquetting 4
Effect.
The application method of the concentric tension fixture briefly described below.
In use, tension component 3 is inserted into through-hole 52, the lower surface of the abutting workpiece 5 of positioning surface 71, and the second positioning pin
In 8 insertion pin holes 51, so that tension fixture and workpiece 5 are accurately positioned with one heart, lock screw 10 is then tightened so that briquetting 4
It is moved towards the direction of tension component 3, so that tension piece 31 opens, so that the inner wall of through-hole 52 is abutted, to clamp workpiece 5.
Although the foregoing describe specific embodiment of the present utility model, it will be appreciated by those of skill in the art that
This is merely illustrative of, and the protection scope of the utility model is defined by the appended claims.Those skilled in the art
Under the premise of without departing substantially from the principles of the present invention and essence, many changes and modifications may be made,
But these change and modification each fall within the protection scope of the utility model.
Claims (11)
1. a kind of concentric tension fixture, which is characterized in that the concentric tension fixture include pedestal, central axis, tension component and
Briquetting；
The central axis is fixed on the pedestal；
The tension component is sheathed on the central axis and including multiple tension pieces around the central axis, the tension piece
It is separable between each other；
The briquetting is set to one end of the tension component and restrains towards the tension component, and the briquetting is inserted in described rise
In power component.
2. tension fixture with one heart as described in claim 1, which is characterized in that the concentric tension fixture includes two pressures
Block, two briquettings are respectively arranged on the both ends of the tension component.
3. tension fixture with one heart as described in claim 1, which is characterized in that the concentric tension fixture further includes the first positioning
Pin and the second positioning pin；
First set pin sleeve is set to the central axis, and between the pedestal and the briquetting, first positioning
Pin is removably attachable to the pedestal and has positioning surface in the side opposite with the pedestal；
Second positioning pin is connected to the pedestal, and neighbouring first positioning pin is arranged, and second positioning pin is used for
Cooperate with the pin hole on the workpiece of the concentric tension fixture clamping.
4. tension fixture with one heart as claimed in claim 3, which is characterized in that a step surface is formed on first positioning pin,
The step surface is the positioning surface.
5. tension fixture with one heart as claimed in claim 3, which is characterized in that the concentric tension fixture further includes supporting block,
The tail end of the supporting block is connected to the pedestal, and the head end of the supporting block is equipped with second positioning pin.
6. tension fixture with one heart as claimed in claim 5, which is characterized in that the supporting block is from the tail end towards the head
End convergence.
7. tension fixture with one heart as described in claim 1, which is characterized in that the concentric tension fixture further includes locking screw
The end face of silk, the head end of the central axis is equipped with screw hole, and the lock screw is arranged in the briquetting and is connected to the spiral shell
Wire hole, the lock screw are used to press the briquetting towards the central axis.
8. tension fixture with one heart as claimed in claim 7, which is characterized in that the concentric tension fixture further includes lock pad
Piece, the lock screw are arranged in the lock washer, the lock washer be located in the briquetting and the lock screw it
Between, the lock screw is used to press the lock washer towards the central axis to press the briquetting.
9. tension fixture with one heart as described in claim 1, which is characterized in that the concentric tension fixture further includes rubber ring,
The rubber ring is located on the tension component and for so that the tension piece is mutually gathered.
10. tension fixture with one heart as claimed in claim 9, which is characterized in that it is recessed that the periphery of the tension component is equipped with annular
Slot, the rubber ring are embedded in the annular groove；The depth of the annular groove is greater than the straight of the section of the rubber ring
Diameter.
11. tension fixture with one heart as described in claim 1, which is characterized in that the quantity of the tension piece is four.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820532151.5U CN208147403U (en) | 2018-04-13 | 2018-04-13 | Concentric tension fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820532151.5U CN208147403U (en) | 2018-04-13 | 2018-04-13 | Concentric tension fixture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208147403U true CN208147403U (en) | 2018-11-27 |
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ID=64377951
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820532151.5U Active CN208147403U (en) | 2018-04-13 | 2018-04-13 | Concentric tension fixture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208147403U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108340177A (en) * | 2018-04-13 | 2018-07-31 | 上海阿为特精密机械股份有限公司 | Concentric tension fixture |
-
2018
- 2018-04-13 CN CN201820532151.5U patent/CN208147403U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108340177A (en) * | 2018-04-13 | 2018-07-31 | 上海阿为特精密机械股份有限公司 | Concentric tension fixture |
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