CN207953251U - Small shaft-like workpiece fixture - Google Patents
Small shaft-like workpiece fixture Download PDFInfo
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- CN207953251U CN207953251U CN201820289108.0U CN201820289108U CN207953251U CN 207953251 U CN207953251 U CN 207953251U CN 201820289108 U CN201820289108 U CN 201820289108U CN 207953251 U CN207953251 U CN 207953251U
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- small shaft
- elastic clamping
- clamping portion
- fixture
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Abstract
The utility model is related to the field of fixtures of mechanical processing, specifically small shaft-like workpiece fixture.Clamping part 1, elastic clamping portion 2 and positioning region 3, clamping part 1 including coaxial integrated tubular structure are fixed on lathe chuck, and small shaft-like workpiece one end is inserted into positioning region 3, the outer circle portion of small shaft-like workpiece capable of being fixed after 2 deformation of elastic clamping portion.Small shaft-like workpiece fixture provided by the utility model quickly can be clamped and be detached from small shaft-like workpiece by 2 deformation of elastic clamping portion, and small shaft-like workpiece can be quickly positioned by the positioning region 3 of tubulose；Small axis class fixture centering precision is good, and service efficiency is high, is suitable for high-volume and the high-precision workpiece for needing secondary u-turn centering clamping processing.
Description
Technical field
The utility model is related to the field of fixtures of mechanical processing, specifically small shaft-like workpiece fixture.
Background technology
In mechanical processing process, have that some required precisions are very high, and processing quantity is very big under normal conditions, Er Qiexu
Repeatedly to reverse end for end the workpiece for beating table centering and multiple clamping processing.It is very time-consuming and laborious to process this kind of workpiece, processes part sheet
How long body has more than is needed, and the most of the time is wasted in workpiece u-turn clamping and beats table centering, thus working efficiency is very low,
But also it is not easy to ensure the requirement of drawing technology.
This allows for the processing work that fixture in the prior art is difficult to adapt to high-volume and high-precision small shaft-like workpiece.
For example, an axial flow compressor needs to use nearly thousand high-precision sleeves.For this high-volume and high-precision small axis class
The processing work of workpiece, it is ensured that except drawing technology requires, it is also necessary to promote the efficiency of processing, reduce the cost of processing.
Utility model content
In order to solve the above technical problems, the utility model provides small axis class fixture.
One side according to the present utility model, provides small shaft-like workpiece fixture, including coaxial integrated tubular structure
Clamping part, elastic clamping portion and positioning region, the clamping part are fixed on lathe chuck, and described small shaft-like workpiece one end can insert
Enter the positioning region, the outer circle portion of the small shaft-like workpiece can be fixed after elastic clamping portion deformation.
Further, the small shaft-like workpiece fixture is made of nodular cast iron.
Further, the pipe thickness in the elastic clamping portion is 2~4mm.
Further, the interior diameter of the positioning region is more than overall diameter 0.05mm~0.20mm of the small shaft-like workpiece.
Further, the oral area of the positioning region has funnelform groove.
Further, the pipe thickness of the clamping part is 10mm or more.
Further, the small shaft-like workpiece fixture further includes press member, and the press member is arranged in the elasticity
The radially outer of clamping section generates deformation after the radial forces that the elastic clamping portion is applied by the press member, institute
After stating press member removal radial forces, the elastic clamping portion can restore to the original state.
Further, the press member includes the clip and clamping screw for having V-type inner face, and the quantity of the clip is
2, the radially outer of the V-type inner face mirror symmetry of 2 clips being arranged in the elastic clamping portion, clamping screw is used for
Lock 2 clips.
Further, elastic clamping portion axial length is 20-30mm.
Small shaft-like workpiece fixture provided by the utility model, can be quickly clamped and be taken off by 2 deformation of elastic clamping portion
From small shaft-like workpiece, small shaft-like workpiece can quickly be positioned by the positioning region 3 of tubulose；Small axis class fixture centering precision is good,
Service efficiency is high, is suitable for high-volume and the high-precision workpiece for needing secondary u-turn centering clamping processing.
Description of the drawings
Fig. 1 is the positive structure diagram for the small axis class fixture that the utility model embodiment provides.
Fig. 2 is the right side structural representation for the small axis class fixture that the utility model embodiment provides.
Fig. 3 is the overlooking structure diagram for the small axis class fixture that the utility model embodiment provides.
Fig. 4 is the structural schematic diagram of the funnelform groove for the small axis class fixture that the utility model embodiment provides.
Specific implementation mode
Embodiment：
As shown in Figures 1 to 3, small shaft-like workpiece fixture, including the clamping part 1 of tubular structure, elastic clamping portion 2 and positioning region
3.Wherein, clamping part 1 is fixed on lathe chuck, the entirety of small shaft-like workpiece fixture.One end of small shaft-like workpiece is (to process
One end) be inserted into positioning region 3, for the outer circle portion of small shaft-like workpiece can be fixed after 2 deformation of elastic clamping portion.Clamping part 1, bullet
Property clamping section 2 and positioning region 3 are the structures of integral type, and elastic clamping portion 2 is arranged in one end of small shaft-like workpiece fixture.It should manage
Solution, small shaft-like workpiece includes hollow tubular workpiece and solid tubular workpiece, and is suitable for provided by the utility model small
The clamping of shaft-like workpiece fixture.
Small shaft-like workpiece fixture provided by the utility model, can be quickly clamped and be taken off by 2 deformation of elastic clamping portion
From small shaft-like workpiece, small shaft-like workpiece can quickly be positioned by the positioning region 3 of tubulose；Small axis class fixture centering precision is good,
Service efficiency is high, is suitable for high-volume and the high-precision workpiece for needing secondary u-turn centering clamping processing.
Further, 2 axial length of elastic clamping portion is 20-30mm.Elastic clamping portion 2 is for clamping machined completion
One end outer circle of small shaft-like workpiece, and then finish each portion of the other end.When finishing each portion of the other end, cutting force very little,
Axial length is that 20-30mm has limited 4 degree of freedom of small shaft-like workpiece, and axial float and center will not occur for processing when
Rotation.
In order to realize the quick positioning to small shaft-like workpiece, the internal diameter of positioning region 3, which should be more than, has processed one end
Small shaft-like workpiece outer diameter 0.05mm~0.20mm, therefore, small shaft-like workpiece is after being inserted into flexibly positioned portion 3, positioning region 3 and quilt
Workpieces processing forms gap locating effect.In such a way that gap positions, the use effect of this fixture can be further promoted
Rate.
As shown in figure 4, for the ease of small shaft-like workpiece is inserted into positioning region 3, funnelform slope is arranged in 3 oral area of positioning region
Mouthful, it is easily installed workpiece to be machined in this way.After funnelform groove, the use effect of this fixture can be further promoted
Rate.
As shown in Figures 1 to 3, the outer radial active force in elastic clamping portion 2 is radial by being looped around elastic clamping portion 2
Press member 4 (clip) is provided.Only consider that the press member 4 may be used in the prior art more in the case of compressing
Kind mode, as long as the application work of two point form or multipoint mode or face contact type can be formed to the radially outer in elastic clamping portion 2
Firmly.It is allowed to generate flexible deformation however, to ensure that press member 4 generates clamping force to clamping section 2 and clamps and be processed
After excircle of workpiece, the outer circle of workpiece to be machined and machine tool rotary center ensure with one heart, some small axis also are being clamped in order to prevent
Small shaft-like workpiece to be processed is deformed because of unbalance stress during class workpiece, the application effect of preferably symmetrical multipoint mode
The mode of power.It should be understood that the mode of the application active force of face contact type, should regard a kind of continuous symmetrical multiple spot as
The clamping mode of formula.After the radial forces that press member 4 applies the radially outer in elastic clamping portion 2, is produced from elastic clamping portion 2
Raw deformation, to form the clamping to workpiece to be machined；After 4 removal radial forces of press member, elastic clamping portion 2 restores former
Shape enables workpiece to be machined to be moved relative to elastic clamping portion 2.
As shown in Figures 1 to 3, a kind of preferred press member 4 is as follows：Include clip 41 and clamping screw with V-type face
42.Wherein, V-type face clip is 2, and clamping screw is also 2.Through-hole is respectively set in the both ends of two of which clip, for locking
Tight bolt penetrates.What 2 V-type clip V-type inner face mirror symmetries were arranged, and 2 V-type inner faces are separately positioned on elastic clamping portion
2 outside.2 clamping screws are each passed through the through-hole of two clips, and the other end is fixed with nut.In actual use, forward direction rotation
Clamping screw is twisted, 2 clips are close to each other and formed to the radial clamping in elastic clamping portion 2；Conversely, reversely screwing locking screw
Bolt, 2 clips are separated from each other so that elastic clamping portion 2 can restore to the original state.The preferred press member 4 is not only suitble to application
Solid small shaft-like workpiece is applied also in small shaft forgings, also has many advantages, such as that simple in structure, contact area is big, easy to use.
The clamping to workpiece to be machined is formed for the ease of elastic clamping portion 2 and is loosened, and the elastic clamping portion 2 of fixture uses
Ductile Metals are made.Preferred Ductile Metals are nodular cast iron.The toughness of nodular cast iron at normal temperatures is good,
Deformation can be generated under the action of by external force, can be restored to the original state under the action of being detached from external force, be suitable as fixture
Material.
Further, since clamping part 1, clamping section 2 and positioning region 3 are integral structures, this structure is by toughness gold
Belong to material to be made.Preferred Ductile Metals are nodular cast iron.
Further, since the outer tube wall of clamping part 1 and the chuck of lathe are fixed, in order to avoid clamping part 1 is filling
Deformation is generated during being stuck in chuck, the wall thickness of clamping part 1 should be arranged in rational thickness, to ensure clamping part 1
Using.In order to ensure the rigidity of clamping part 1, preferably it sets the thickness of clamping part 1 to 10mm or more.
Further, it is difficult to generate deformation during clamping workpiece to be machined in order to avoid elastic clamping portion 2 or need
It wants external force is larger could generate deformation, the thickness in elastic clamping portion 2 should be set to easy to produce deformation and is easy to restore former
The thickness of shape.By actual test, preferably it sets the thickness in elastic clamping portion 2 to 2mm~4mm.
The operation principle of the utility model is as follows：
Clamping part 1 is long tube, and elastic clamping portion 2 is short tube, and positioning region 3 is matched interior with small shaft-like workpiece outer circle
Hole.Clamping part 1 is identical as the interior diameter in elastic clamping portion 2.Small shaft-like workpiece is inserted into positioning region 3, elastic clamping portion 2
Deformation can be generated after by external radial forces and being capable of radially fixed small shaft-like workpiece.In order to ensure positioning region 3 with
Elastic clamping portion 2 and lathe are concentric, after 1 outer tube wall of clamping part is carried out clamping fixation as the chuck of fixed part and lathe,
3 endoporus of clamped one time Vehicle Processing positioning region and 2 outer circle of clamping section.Then it is sequentially inserted into calmly by small shaft-like workpiece to be processed
In position portion 3, pass through clamp positioning region 2.Positioning region 2 generates elastomeric radial, and flexible deformation acts on workpiece to be machined
In outer circle, shaft-like workpiece small in this way completes radial positioning.And form radial clamping.Flexible deformation behind clamping section 2 after clip unclamps
It restores to the original state, outer circle and 3 endoporus of positioning region of small shaft-like workpiece loosen.Since small shaft-like workpiece outer circle and positioning region 3 are gaps
Cooperation, can freely take out workpiece to be machined, not interfere with positioning and the clamping of next workpiece to be machined.Therefore, this implementation
The small axis class fixture of example can promote the efficiency of processing small shaft class workpiece on the basis of ensureing that the technology of drawing requirement requires, and fit
Answer the processing work of high-volume and high-precision small shaft-like workpiece.
The above is only the preferred embodiment of the present invention, and it does not limit the scope of the patent of the present invention,
Equivalent structure transformation made by using the description of the utility model and the drawings is applied directly or indirectly in other phases
The technical field of pass, is equally included in the patent within the scope of the utility model.
Claims (9)
1. small shaft-like workpiece fixture, which is characterized in that the clamping part (1) including coaxial integrated tubular structure, elastic clamping portion
(2) it is fixed on lathe chuck with positioning region (3), the clamping part (1), it is described fixed that described small shaft-like workpiece one end is inserted into
Position portion (3) can fix the outer circle portion of the small shaft-like workpiece after elastic clamping portion (2) deformation.
2. fixture according to claim 1, which is characterized in that the small shaft-like workpiece fixture is made of nodular cast iron.
3. fixture according to claim 1, which is characterized in that the pipe thickness of the elastic clamping portion (2) is 2~4mm.
4. fixture according to claim 1, which is characterized in that the interior diameter of the positioning region (3) is more than the small axis class
Overall diameter 0.05mm~0.20mm of workpiece.
5. fixture according to claim 1, which is characterized in that the oral area of the positioning region (3) has funnelform groove.
6. fixture according to claim 1, which is characterized in that the pipe thickness of the clamping part (1) is 10mm or more.
7. fixture according to claim 1, which is characterized in that the small shaft-like workpiece fixture further includes press member (4),
Press member (4) setting is in the radially outer of the elastic clamping portion (2), and the elastic clamping portion (2) is by the pressure
Deformation is generated after the radial forces that power component (4) applies, after press member (4) the removal radial forces, the elasticity
Clamping section (2) can restore to the original state.
8. fixture according to claim 7, which is characterized in that the press member (4) includes the clip for having V-type inner face
(41) and clamping screw (42), the quantity of the clip (41) is 2, the V-type inner face mirror symmetry of 2 clips (41)
Radially outer in the elastic clamping portion (2) is set, and clamping screw (42) is for locking 2 clips (41).
9. fixture according to claim 7, which is characterized in that elastic clamping portion (2) axial length is 20-30mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820289108.0U CN207953251U (en) | 2018-03-01 | 2018-03-01 | Small shaft-like workpiece fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820289108.0U CN207953251U (en) | 2018-03-01 | 2018-03-01 | Small shaft-like workpiece fixture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207953251U true CN207953251U (en) | 2018-10-12 |
Family
ID=63740589
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820289108.0U Active CN207953251U (en) | 2018-03-01 | 2018-03-01 | Small shaft-like workpiece fixture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207953251U (en) |
-
2018
- 2018-03-01 CN CN201820289108.0U patent/CN207953251U/en active Active
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