CN202264106U - Special clamping device for ultra-slender shafts - Google Patents
Special clamping device for ultra-slender shafts Download PDFInfo
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- CN202264106U CN202264106U CN2011204141513U CN201120414151U CN202264106U CN 202264106 U CN202264106 U CN 202264106U CN 2011204141513 U CN2011204141513 U CN 2011204141513U CN 201120414151 U CN201120414151 U CN 201120414151U CN 202264106 U CN202264106 U CN 202264106U
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- pin rod
- ring flange
- tailstock
- utility
- model
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Abstract
The utility model discloses a special clamping device for ultra-slender shafts, which comprises a spindle end chuck and a positioning device. The positioning device consists of a pin rod component, a tailstock clamping chuck, a flange and a positioning block, and the pin rod component comprises a T-shaped ring block and a threaded pin rod; a bearing housing is arranged in the flange, and a bearing is mounted in the bearing housing of the flange; the T-shaped ring block is connected with the tailstock clamping chuck, through holes are disposed on one side of the flange, threaded holes are arranged on one side of the tailstock clamping chuck, and the flange is connected with the tailstock clamping chuck by screws; and threaded holes are disposed on the other side of the flange disc, through holes are arranged on the positioning block, and the flange is connected with the positioning block by screws. The special clamping device is fine in integral manufacturability, and machining cost of unconventional long shafts is effectively lowered.
Description
Technical field
The utility model relates to clamping technology and clamping device thereof, particularly the extraordinary clamping device of superfine shaft.
Background technology
Now, engineering goods become more diverse, and develop towards high accuracy, low surface roughness direction, require processing thin, planar part and superfine shaft class part.
Axial workpiece uses in mechanical industry extensively, and military project, space flight, automobile, precision optical machinery, small and special electric machine and underloading quick conveying device all have superfine shaft class part.
For the processing of major axis class, especially superfine shaft processing is one of difficult problem of mechanical processing industry.By the processing experience, usually, the draw ratio ratio of shaft diameter (axial length with) is superfine shaft more than 50.Because the superfine shaft flexibility is big, poor rigidity.During cutting, when receiving resistance to cutting, can cause bending, vibration.In addition, the radially amount of deflection that centrifugal force produced that the deadweight of superfine shaft produces, in the turning processing, the system of processing vibration takes place in the manufacturing process system that lathe-anchor clamps-cutter constituted, and these factors all influence the machining accuracy of major axis.
As shown in Figure 1, traditional axle processing and loading clamp mode is a Double Tops point clamping.This installation way makes processed axle be in an extruded state, and the axle body section upwards is prone to produce flexural deformation at the diameter of axle, is arch.
This clamping technology for draw ratio little (like draw ratio less than 20), axial length is short or the shaft run-out amount is less demanding, perhaps the axle of non-finishing step type can adopt.
As shown in Figure 2, be the processing superfine shaft, general " segmented " technology that adopts is processed.So-called " segmented " technology is meant: with the lathe spindle chuck superfine shaft one end is clamped, expose one section, process about about 50mm.Lathe tool is only to this a bit of processing.This installation way can not influence self rigidity of processed shaft part.After processing one section, axle is stretched out one section again, about about 50mm, processing.
By that analogy.Be machined to a half of a length overall,,, process successively according to the operation of front with superfine shaft switching-over dress, folder.Process until whole completion of processed superfine shaft.
Yet in " segmented " technology, when superfine shaft extends to total axial length one half, himself rigidity descends.Under the effect of lathe rotating speed, unsettled section bending occurs, shakes from side to side.At this moment need the center support frame to assist, reduce the amount of deflection of remote point, increase the whole rigidity of processed superfine shaft.
Though this technology can be processed superfine shaft, surface to be machined Duan Shangyou " laemodipodiform " and " connecing tool marks ".
Piece surface after the processing, surface accuracy and outward appearance are all not satisfactory.Reason is:
1, the whole machining process process is not that " cutter " is shaped.In the segmental machining, processed axle all will once be adorned, press from both sides, and can not guarantee to add and locate consistent with preceding one procedure man-hour.Processing rear axle surface circle is beated and is unavoidably produced deviation.
2, because every section dress, folder location and location, preceding road are inconsistent, cause finished surface that " connecing tool marks " arranged.The control of the lathe tool amount of feeding is improper, causes surface to be machined to leave " ripple " easily.Surface accuracy after the processing is low, and roughness is big.To the postorder surface coating technology, the coating skin depth is inconsistent, makes the finished surface coating shedding easily, influences quality and outward appearance.
3, " segmented " processes operation is many, length consuming time.Adding man-hour can only be to processing near this end of lathe spindle chuck, and working (machining) efficiency is low.
If a kind of process program can be arranged; Can process the superfine shaft " cutter " of draw ratio more than 50 is shaped; The circle of the superfine shaft after the processing is beated little, and helps postorder surface treatment (as: surface coating technology etc.) or assembling, so just can effectively solve this actual processing problems.
The utility model content
Problems such as major axis was prone to generation and is out of shape when the technical problem that the utility model will solve provided the extraordinary clamping device of a kind of superfine shaft and solves actual processing major axis, and working (machining) efficiency is low.
For achieving the above object, the technical scheme of the utility model is following:
The utility model clamping device comprises spindle end chuck and positioner, and said positioner comprises pin rod assembly, tailstock clamping chuck, ring flange and locating piece, and said pin rod assembly is made up of T type ring piece and screw thread pin rod; Be provided with bearing chamber in the said ring flange, in the bearing chamber of said ring flange bearing be installed; Said T type ring piece is connected with said tailstock clamping chuck, and a side of said ring flange is provided with through hole, and a side of said tailstock clamping chuck is provided with screwed hole, and said ring flange is connected through screw with tailstock clamping chuck; The opposite side of said ring flange is provided with screwed hole, and said locating piece is provided with through hole, and said ring flange is connected through screw with locating piece.
Preferably, the hardness of said screw thread pin rod is HRC60.
Preferably, said screw thread pin rod is made up of thread segment and polished rod section, and the thread segment length of said screw thread pin rod is than the little 1-2mm of processed major axis two ends thread center's hole depth, and the external diameter M of said thread segment is greater than the outside diameter d of said polished rod section.
Preferably, the size files L of said T type ring piece is 8-10mm.
Through technique scheme, the beneficial effect of the utility model is:
The extraordinary clamping device of the ultra-fine length of the utility model makes that draw ratio is that superfine shaft more than 50 adds man-hour integral body and is in " level is stretching " state, helps obtaining good machining accuracy like this.Through detecting, processed superfine shaft reaches designing requirement.Be shaped owing to belong to " cutter " during major axis fine finishining in the end, therefore processed superfine shaft surface nothing connects the tool marks mark, does not produce the processing ripple, and precision is high, helps subsequent handling.Superfine shaft after the processing of this process program is in follow-up surface treatment: nickel plating, nitrogenize, nitrogen oxidation etc., and the top layer thickness of coating is even, and coating is easy to adhere to.Obtain good apparent effect.Also help assembling.
After the positioner of the utility model is installed on the lathe tailstock seat, also need not when not using to move.Do not influence other class processing.Superfine shaft two ends processing belt threaded central aperture as fabrication hole, is to be processedly removed to size.The utility model isolated plant can be used separately as the processing superfine shaft thick, in, the Seiko preface.The effective travel that is not more than lathe tool like processed axial length all can be through installing the utility model isolated plant processing major axis.The stretching isolated plant of superfine shaft can be realized batch machining, enhances productivity, and reduces cost.The stretching isolated plant of superfine shaft is suitable to be installed on the bigger lathe of spindle chuck diameter and lathe tool stroke.
The utility model can be applicable to the processing of the superfine shaft in military small and special electric machine and the quick conveying device.
The utility model erecting device integrated artistic property is good, can be applicable to the general category lathe, the range of work of expansion plain edition lathe promotes working ability, has changed the idea that the high precision zero parts need be used high-end devices,
The utility model can make middle-size and small-size machining enterprise also can process superfine shaft, reduces unconventional major axis processing cost effectively.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the accompanying drawing in describing below only is some embodiment of the utility model, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
The sketch map that is squeezed of Fig. 1 major axis when adopting traditional major axis processing and loading clamp mode;
Fig. 2 is segmented processing sketch map;
Fig. 3 is the utility model structural representation;
Fig. 4 is the utility model flange plate structure sketch map;
Fig. 5 is the cutaway view of the utility model ring flange;
Fig. 6 is the structural representation of the utility model locating piece;
Fig. 7 is the cutaway view of the utility model locating piece;
Fig. 8 is the utility model pin rod modular construction sketch map;
Fig. 9 is the structural representation of the utility model screw thread pin rod;
Figure 10 is the cutaway view of the utility model T type ring piece;
Figure 11 is that the utility model positioner is at lathe tailstock clamping sketch map;
Figure 12 is the beat curve map of actual value of each null circle on the superfine shaft shaft part behind the utility model one cutter shaping finish turning;
Figure 13 is each point surface roughness measured value R on the superfine shaft shaft part behind the utility model one cutter shaping finish turning
aWith each point surface roughness measured value R on the superfine shaft shaft part behind the prior art segmentation finish turning
aThe curve comparison diagram.
The numeral corresponding component title represented among the figure with letter:
1, lathe spindle chuck 2, major axis 3, tailstock clamping chuck 4, tailstock addendum cone 10, pin rod assembly 11, screw thread pin rod 12, T type ring piece 20, ring flange 21, bearing 30, locating piece 40, screw 50, through hole 60, screwed hole.
The specific embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose and be easy to understand understanding with effect, below in conjunction with concrete diagram, further set forth the utility model.
Extremely shown in Figure 11 referring to Fig. 3; The utility model clamping device comprises lathe spindle chuck 1 and positioner; Said positioner is made up of pin rod assembly 10, tailstock clamping chuck 3, ring flange 20 and locating piece 30, and said pin rod assembly 10 is made up of T type ring piece 12 and screw thread pin rod 11; Be provided with bearing chamber (not marking among the figure) in the said ring flange 20, bearing 21 is installed in the bearing chamber of said ring flange 20; Said T type ring piece 12 is connected with said tailstock clamping chuck 3, and a side of said ring flange 20 is provided with through hole 50, and a side of said tailstock clamping chuck 3 is provided with screwed hole 60, and said ring flange 20 links together through screw 40 with tailstock clamping chuck 3; The opposite side of said ring flange 20 is provided with screwed hole 60, and said locating piece 30 is provided with through hole 50, and said ring flange 20 is connected through screw 40 with locating piece 30.
The utility model ring flange 20 adopts the hard cast aluminum alloy material and carries out the light decorations and handle, and it has increased the device integral intensity.
The utility model locating piece 30 adopts the hard cast aluminum alloy material and carries out the light decorations and handle, and it has increased the device integral intensity.
The utility model screw thread pin rod 11 adopts the Cr12 material, and its hardness is greater than HRC60.
Referring to shown in Figure 9, the utility model screw thread pin rod 11 is made up of thread segment and polished rod section, and the thread segment length of said screw thread pin rod 11 is than the little 1-2mm of processed major axis two ends thread center's hole depth, and the external diameter M of said thread segment is greater than the outside diameter d of said polished rod section.
The utility model T type ring piece 12 is a brass H62 material, and its size files L is 8-10mm.
Referring to Fig. 3 and shown in Figure 11, the utility model clamping technology is following:
(1) before processing, in advance at 2 two ends of superfine shaft machining screw centre bore M (not marking among the figure);
(2) an end screwed hole of centre of the thread segment of a screw thread pin rod 11 and processed major axis 2 is connect and screw, put T type ring piece 12 then, pin rod assembly 10 is integrally formed with processed major axis 2;
(3) other end of processed major axis 2 is connected with pin rod assembly 10, and it is identical with step (2).
(4) lathe spindle chuck 1 clamps the polished rod section of screw thread pin rod 11;
(5) bearing 21 is fixed in the bearing chamber of ring flange 20 bearing chamber in the ring flange 20 and bearing 21 tight fits;
(6) centre bore of locating piece 30 passes lathe tailstock addendum cone 4; The ring flange 20 of nested good bearing 21 is fixed on the lathe tailstock addendum cone 4; Tailstock frame addendum cone 4 outer circle diameter tight fits on the internal diameter of bearing 21 and the lathe tailstock tailstock; Like this bearing 21 internal diameters are fixed on tailstock frame addendum cone 4 end faces, with screw 40 ring flange 20 and locating piece 30 are coupled to one again;
(7) screw 40 connects the screwed hole 60 on the tailstock clamping chuck 3 through the through hole 50 of ring flange 20, and screws; Make tailstock clamping chuck 3-ring flange 20-locating piece 30 become a clamping integral body;
(8) chuck on the tailstock end clamps the polished rod section of the other end screw thread pin rod 11 on the processed major axis 2;
(9) after processed major axis 2 whole clampings are accomplished, lathe tailstock is passed backward, made an integral body be in " level is stretching " state.
The reach of the utility model major axis 2 threaded central aperture M is 15mm, and the aperture of threaded central aperture M is 1: 2 with the ratio of axle D outer diameter.
The utility model is to be the processing that the superfine shaft 2 of material carries out to 2Cr13, and 2Cr13 is a kind of easy cut material.According to practice, the best surface roughness that obtains when cutting this material, its rotating speed is at 400～425 rev/mins.Because this processing object is that draw ratio is 50 superfine shaft, vibrate for avoiding too fast causing of work in-process rotating speed, influence surface roughness.Therefore when finish turning, rotating speed is dropped to 300～350 rev/mins, to guarantee surface accuracy.
Work piece is the axle of draw ratio 50, particularly when finish turning, although processed axle is in " stretching " state, and when rotating speed improves, the easy vibration.For avoiding this type of situation to take place, the suitable rotating speed that suitably reduces guarantees machining accuracy.
In the processing, to different operations, the lathe spindle rotating speed need be controlled at certain limit.Specific as follows:
(1) rough turn
Rotating speed: about 500 rev/mins, the depth of cut: 0.10～0.15mm/ changes;
(2) half finish turnings
Rotating speed: 400～450 rev/mins, the depth of cut: 0.06～0.12mm/ changes;
(3) finish turning
Rotating speed: 300～350 rev/mins, the depth of cut: 0.05～0.06mm/ changes.
Embodiment
Adding man-hour in utility model, the end with major axis 2 is fixed in lathe spindle chuck 1 and clamping earlier, and the other end then is the other end that grasps major axis 2 through special positioner dress, and positioner is fixed on the tail-holder rack of lathe.
Special screw thread pin rod 11 with the polished end of screw thread pin rod 11 fluting, can be pulled tool through screwdriver or special use like this and screw or unclamp, and reaches the loading and unloading purpose.
The threaded central aperture at major axis 2 two ends and the thread segment of screw thread pin rod 11 link, and when T type ring piece 12 cooperated assembling with screw thread pin rod 11, size files L played the escape effect in turning, and tailstock clamping chuck 3 blocks the polished rod section of screw thread pin rod 11.
Adopt behind the major axis one of which cutter shaping finish turning of above-mentioned positioner clamping on the superfine shaft shaft part each null circle measured value of beating as shown in table 1, its curve map is shown in figure 12;
Each null circle actual value of beating on the superfine shaft shaft part behind the table 1 cutter shaping finish turning
Unit: mm/100
Curve distribution situation according to Figure 12 can find out, the greatest circle of the superfine shaft 35.5mm/100 that beats is less than the product design requirement of the 50mm/100 of designing requirement.
Adopt behind the major axis one of which cutter shaping finish turning of above-mentioned positioner clamping each point surface roughness measured value R on the superfine shaft shaft part
aAs shown in table 2;
Each point surface roughness measured value R on the superfine shaft shaft part behind the table 2 cutter shaping finish turning
a
Unit: μ m
Each point surface roughness measured value R on the superfine shaft shaft part behind its segmented finish turning of major axis of prior art processing
aAs shown in table 3;
Each point surface roughness measured value R on the superfine shaft shaft part behind the table 3 segmented finish turning
a
Unit: μ m
Referring to shown in Figure 13, it is each point surface roughness measured value R on the superfine shaft shaft part behind the utility model one cutter shaping finish turning
aWith each point surface roughness measured value R on the superfine shaft shaft part behind the prior art segmentation finish turning
aThe curve comparison diagram.
More than show and described basic principle of the utility model and the advantage of principal character and the utility model.The technical staff of the industry should understand; The utility model is not restricted to the described embodiments; The principle of describing in the foregoing description and the specification that the utility model just is described; Under the prerequisite that does not break away from the utility model spirit and scope, the utility model also has various changes and modifications, and these variations and improvement all fall in the utility model scope that requires protection.The utility model requires protection domain to be defined by appending claims and equivalent thereof.
Claims (4)
1. the extraordinary clamping device of superfine shaft comprises spindle end chuck and positioner, it is characterized in that said positioner comprises pin rod assembly, tailstock clamping chuck, ring flange and locating piece, and said pin rod assembly is made up of T type ring piece and screw thread pin rod; Be provided with bearing chamber in the said ring flange, in the bearing chamber of said ring flange bearing be installed; Said T type ring piece is connected with said tailstock clamping chuck, and a side of said ring flange is provided with through hole, and a side of said tailstock clamping chuck is provided with screwed hole, and said ring flange is connected through screw with tailstock clamping chuck; The opposite side of said ring flange is provided with screwed hole, and said locating piece is provided with through hole, and said ring flange is connected through screw with locating piece.
2. the extraordinary clamping device of superfine shaft according to claim 1, it is characterized in that: the hardness of said screw thread pin rod is HRC60.
3. the extraordinary clamping device of superfine shaft according to claim 1; It is characterized in that: said screw thread pin rod is made up of thread segment and polished rod section; The thread segment length of said screw thread pin rod is than the little 1-2mm of processed major axis two ends thread center's hole depth, and the external diameter M of said thread segment is greater than the outside diameter d of said polished rod section.
4. the extraordinary clamping device of superfine shaft according to claim 1, it is characterized in that: the size files L of said T type ring piece is 8-10mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204141513U CN202264106U (en) | 2011-10-26 | 2011-10-26 | Special clamping device for ultra-slender shafts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204141513U CN202264106U (en) | 2011-10-26 | 2011-10-26 | Special clamping device for ultra-slender shafts |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202264106U true CN202264106U (en) | 2012-06-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204141513U Expired - Fee Related CN202264106U (en) | 2011-10-26 | 2011-10-26 | Special clamping device for ultra-slender shafts |
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| Country | Link |
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| CN (1) | CN202264106U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102357810A (en) * | 2011-10-26 | 2012-02-22 | 上海海事大学 | Special clamping technology for ultrathin long shaft and clamping device thereof |
| CN104043999A (en) * | 2014-06-26 | 2014-09-17 | 无锡市威海达机械制造有限公司 | Numerically controlled lathe clamping and holding device |
| CN107791069A (en) * | 2016-09-07 | 2018-03-13 | 台湾丽驰科技股份有限公司 | Turn-milling cutting stretches fixing device |
-
2011
- 2011-10-26 CN CN2011204141513U patent/CN202264106U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102357810A (en) * | 2011-10-26 | 2012-02-22 | 上海海事大学 | Special clamping technology for ultrathin long shaft and clamping device thereof |
| CN104043999A (en) * | 2014-06-26 | 2014-09-17 | 无锡市威海达机械制造有限公司 | Numerically controlled lathe clamping and holding device |
| CN107791069A (en) * | 2016-09-07 | 2018-03-13 | 台湾丽驰科技股份有限公司 | Turn-milling cutting stretches fixing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120606 Termination date: 20121026 |