CN102343517A - Positioning device of tail frame base in special clamping process of superfine long shafts - Google Patents
Positioning device of tail frame base in special clamping process of superfine long shafts Download PDFInfo
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- CN102343517A CN102343517A CN2011103303163A CN201110330316A CN102343517A CN 102343517 A CN102343517 A CN 102343517A CN 2011103303163 A CN2011103303163 A CN 2011103303163A CN 201110330316 A CN201110330316 A CN 201110330316A CN 102343517 A CN102343517 A CN 102343517A
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- tailstock
- pin rod
- ring flange
- clamping
- positioner
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Abstract
The invention discloses a positioning device of a tail frame base in a special clamping process of superfine long shafts. The positioning device comprises a pin rod component, a tail frame retaining and clamping disk, a flange disk and a positioning block; the pin rod component consists of a T-shaped annular block and a threaded pin rod; a bearing chamber is arranged in the flange disk; a bearing is mounted in the bearing chamber of the flange disk; the T-shaped annular block is connected with the tail frame retaining and clamping disk; through holes are arranged at one side of the flange disk; threaded holes are arranged at one side of the tail frame retaining and clamping disk; the flange disk and the tail frame retaining and clamping disk are connected through screw bolts; thread holes are arranged at the other side of the flange disk; through holes are arranged on the positioning block; and the flange disk and the positioning block are connected through screw bolts. The positioning device has good overall manufacturability and can be applied to a common lathe so as to expand the machining scope of the common lathe and improve the machining capacity; and the invention changes the conception that high-precision parts/components need high-end equipment, thus, the cost for machining unconventional long shafts is effectively lowered.
Description
Technical field
The present invention relates to a kind of machined into positioner, particularly the tailstock positioner in the extraordinary clamping technology 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.
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.
Summary of the invention
The tailstock positioner that the technical problem that the present invention will solve provides in the extraordinary clamping technology of a kind of superfine shaft solves the problems such as flexural deformation that adopt traditional positioner to add the generation in man-hour.
For achieving the above object, technical scheme of the present invention is following:
Tailstock positioner in the extraordinary clamping technology of superfine shaft, said positioner comprises pin rod assembly, tailstock clamping chuck, ring flange and locating piece, 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, said ring flange is the hard cast aluminum alloy material, is enhanced surface intensity, carries out the light decorations and handles.
Preferably, said locating piece is the hard cast aluminum alloy material.
Preferably, said screw thread pin rod is the Cr12 material, and its hardness is selected above-mentioned material for use greater than HRC60, and it has strengthened the whole mechanical strength of device.
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, said T type ring piece is a brass H62 material, and its size files L is 8-10mm, and said size files plays the escape effect in turning.
Through technique scheme, the invention has the beneficial effects as follows:
Positioner of the present invention makes the superfine shaft of draw ratio more than 50 add man-hour integral body to be in " level is stretching " state.Help 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; Precision is high; Help the surface treatment of subsequent handling: nickel plating, nitrogenize, nitrogen oxidation etc., the top layer thickness of coating is even, and coating is easy to adhere to.Obtain good apparent effect.Also help assembling.
After positioner of the present invention 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 present invention 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 positioner processing major axis of the present invention.The present invention can realize batch machining, enhances productivity, and reduces cost.Positioner of the present invention is suitable to be installed on the bigger lathe of spindle chuck diameter and lathe tool stroke.
Positioner of the present invention can be applicable to the processing of the superfine shaft in military small and special electric machine and the quick conveying device.
Positioner integrated artistic property of the present invention 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 present invention 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 embodiment of the invention 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; Accompanying drawing in describing below only is some embodiments of the present invention; For those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is a positioner clamping sketch map of the present invention;
Fig. 2 is a major axis structural representation of the present invention;
Fig. 3 is a flange plate structure sketch map of the present invention;
Fig. 4 is the cutaway view of ring flange of the present invention;
Fig. 5 is the structural representation of locating piece of the present invention;
Fig. 6 is the cutaway view of locating piece of the present invention;
Fig. 7 is a pin rod modular construction sketch map of the present invention;
Fig. 8 is the structural representation of screw thread pin rod of the present invention;
Fig. 9 is the cutaway view of T type ring piece of the present invention;
Figure 10 is that positioner of the present invention is at lathe tailstock clamping sketch map;
Figure 11 is the beat curve map of actual value of each null circle on the superfine shaft shaft part behind the present invention's one cutter shaping finish turning;
Figure 12 for each point surface roughness measured value Ra and prior art segmentation finish turning on the superfine shaft shaft part behind the present invention's one cutter shaping finish turning after the curve comparison diagram of each point surface roughness measured value Ra on the superfine shaft shaft part.
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 present invention is realized, reach purpose and effect and be easy to understand and understand, below in conjunction with concrete diagram, further set forth the present invention.
To shown in Figure 10, the tailstock positioner in the extraordinary clamping technology of superfine shaft of the present invention comprises pin rod assembly 10, tailstock clamping chuck 3, ring flange 20 and locating piece 30 referring to Fig. 1, 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.
Locating piece 30 of the present invention adopts the hard cast aluminum alloy material and carries out the light decorations and handle, and it has increased the device integral intensity.
Screw thread pin rod 11 of the present invention adopts the Cr12 material, and its hardness is greater than HRC60.
Referring to shown in Figure 8, screw thread pin rod 11 of the present invention 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.
T type ring piece 12 of the present invention is a brass H62 material, and its size files L is 8-10mm.
Referring to Fig. 1 and shown in Figure 10, the clamping process of positioner of the present invention is following:
(1) at first bearing 21 is fixed in the bearing chamber of ring flange 20.Bearing chamber in the ring flange 20 and bearing 21 tight fits.
(2) centre bore of locating piece 30 passes lathe tailstock addendum cone 4, and the ring flange 20 of nested good bearing 21 is fixed on the tailstock addendum cone 4 then.The internal diameter of bearing 21 and tailstock addendum cone 4 outer circle diameter tight fits.Like this, bearing 21 internal diameters are fixed on tailstock addendum cone 4 end faces.With screw 40 ring flange 20 and locating piece 30 are coupled to one again.
(3) 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.
(4) the polished rod section of the threaded one end pin rod 11 on 3 clampings of tailstock clamping chuck and the processed major axis 2.
(5) after processed major axis 2 whole clampings are accomplished, lathe tailstock is passed backward, made an integral body be in " level is stretching " state.
Lathe spindle end clamping: the thread segment and the processed major axis threaded one end centre bore of screw thread pin rod 11 are connect, screw.Put T type ring piece 12 then.Pin rod assembly 11 is integrally formed with processed major axis, and lathe spindle chuck 1 clamps screw thread pin rod 11 polished rod sections.
Through above positioning and clamping, although major axis 2 is in " stretching " state, 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 turning
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 invention, 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 as shown in figure 11;
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 11 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 12, it is each point surface roughness measured value R on the superfine shaft shaft part behind the present invention's 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 present invention and principal character and advantage of the present invention.The technical staff of the industry should understand; The present invention is not restricted to the described embodiments; That describes in the foregoing description and the specification just illustrates principle of the present invention; Under the prerequisite that does not break away from spirit and scope of the invention; The present invention also has various changes and modifications, and these variations and improvement all fall in the scope of the invention that requires protection.The present invention requires protection domain to be defined by appending claims and equivalent thereof.
Claims (6)
1. the tailstock positioner in the extraordinary clamping technology of superfine shaft 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 tailstock positioner in the extraordinary clamping technology of superfine shaft according to claim 1, it is characterized in that: said ring flange is the hard cast aluminum alloy material.
3. the tailstock positioner in the extraordinary clamping technology of superfine shaft according to claim 1, it is characterized in that: said locating piece is the hard cast aluminum alloy material.
4. the tailstock positioner in the extraordinary clamping technology of superfine shaft according to claim 1, it is characterized in that: said screw thread pin rod is the Cr12 material, and its hardness is greater than HRC60.
5. according to the tailstock positioner in claim 1 or the extraordinary clamping technology of 4 described superfine shafts; 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.
6. the tailstock positioner in the extraordinary clamping technology of superfine shaft according to claim 1, it is characterized in that: said T type ring piece is a brass H62 material, and its size files L is 8-10mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103303163A CN102343517A (en) | 2011-10-26 | 2011-10-26 | Positioning device of tail frame base in special clamping process of superfine long shafts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103303163A CN102343517A (en) | 2011-10-26 | 2011-10-26 | Positioning device of tail frame base in special clamping process of superfine long shafts |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102343517A true CN102343517A (en) | 2012-02-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103303163A Pending CN102343517A (en) | 2011-10-26 | 2011-10-26 | Positioning device of tail frame base in special clamping process of superfine long shafts |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102343517A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103072080A (en) * | 2013-01-28 | 2013-05-01 | 查理敏 | Floating fixture for reed |
| CN107116347A (en) * | 2017-07-05 | 2017-09-01 | 泰州市东方传动技术有限公司 | A kind of processing technology of insertion axle |
| CN114559280A (en) * | 2021-12-08 | 2022-05-31 | 中国航空工业集团公司北京航空精密机械研究所 | Clamping tool for preventing deformation in machining of tiny slender shaft parts |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201186355Y (en) * | 2008-04-09 | 2009-01-28 | 上海海事大学 | Fixture for processing flexible long shaft |
| CN201324947Y (en) * | 2008-12-04 | 2009-10-14 | 上海海事大学 | Long shaft processing special tooling |
| CN102078966A (en) * | 2009-12-29 | 2011-06-01 | 上海海事大学 | Machining process for slender axle |
| 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 |
| CN202292153U (en) * | 2011-10-26 | 2012-07-04 | 上海海事大学 | Tailstock seat positioning device in special clamping process for super-slender shafts |
-
2011
- 2011-10-26 CN CN2011103303163A patent/CN102343517A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201186355Y (en) * | 2008-04-09 | 2009-01-28 | 上海海事大学 | Fixture for processing flexible long shaft |
| CN201324947Y (en) * | 2008-12-04 | 2009-10-14 | 上海海事大学 | Long shaft processing special tooling |
| CN102078966A (en) * | 2009-12-29 | 2011-06-01 | 上海海事大学 | Machining process for slender axle |
| 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 |
| CN202292153U (en) * | 2011-10-26 | 2012-07-04 | 上海海事大学 | Tailstock seat positioning device in special clamping process for super-slender shafts |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103072080A (en) * | 2013-01-28 | 2013-05-01 | 查理敏 | Floating fixture for reed |
| CN107116347A (en) * | 2017-07-05 | 2017-09-01 | 泰州市东方传动技术有限公司 | A kind of processing technology of insertion axle |
| CN114559280A (en) * | 2021-12-08 | 2022-05-31 | 中国航空工业集团公司北京航空精密机械研究所 | Clamping tool for preventing deformation in machining of tiny slender shaft parts |
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| PB01 | Publication | ||
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Application publication date: 20120208 |