CN100515625C - Backlash eliminating method for spindle sleeve of railway lathe and spindle head stock manufactured by the method - Google Patents
Backlash eliminating method for spindle sleeve of railway lathe and spindle head stock manufactured by the method Download PDFInfo
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- CN100515625C CN100515625C CNB200610151037XA CN200610151037A CN100515625C CN 100515625 C CN100515625 C CN 100515625C CN B200610151037X A CNB200610151037X A CN B200610151037XA CN 200610151037 A CN200610151037 A CN 200610151037A CN 100515625 C CN100515625 C CN 100515625C
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Abstract
The present invention relates to backlash eliminating method for spindle sleeve of railway wheel pair lathe and thus manufactured spindle head stock of railway wheel pair lathe. The method includes increasing one sleeve core axle inside the sleeve cavity to form one narrow ring jacket, filling the ring jacket and the pressure regulating cavity with pressure guiding grease medium, compressing the pressure guiding grease medium with the pushing force to expand the spindle sleeve, so as to control the backlash between the spindle and the spindle sleeve. The present invention is superior in that the static tolerance fitting between the spindle and the spindle sleeve is changed into dynamic mechanical parameter regulation, so as to provide the relevant mechanical problem with greatly simplified solution. The practical application of the present invention has resulted in radial runout of wheel pair within 0.007 mm.
Description
Affiliated technical field
The present invention relates to the disappear crack method of a kind of railway wheel, the invention still further relates to a kind of railway wheel of this method manufacturing that utilizes spindle stock to the lathe spindle sleeve.
Background technology
Along with the continuous speed-raising of railway, railway transportation department is also more and more higher to the specification requirement of vehicle wheel tread circular runout, and present some producer will take turns the technical indicator of diameter jumping and force down 0.1mm.And want to realize that high like this machining accuracy, the clearance issues between lathe spindle and its rack sleeve just become a great problem of puzzled car wheel lathe manufacturing firm, because this gap will directly have influence on the machining accuracy of wheel tread.Gap preparation designing requirement between existing car wheel lathe main shaft and the rack sleeve is 0.02mm at present; the linearity between rack sleeve endoporus and rack sleeve all is difficult to guarantee usually in the process but owing to add at machine; in addition chuck with spindle mounted the time spindle nose endoporus also regular meeting dwindle because of distortion; cause the assembling difficulty; cause machine to install timing additional and also need to carry out the secondary reconditioning; finally all can cause the gap between main shaft and the rack sleeve to be increased to 0.1～0.2mm, sometimes even can be bigger.Such gap preparation obviously is difficult to guarantee for the footpath jump set of wheel to 0.1mm.According to our measuring and calculating, want to reach the index that 0.1mm is jumped in the footpath, the gap between lathe spindle and the rack sleeve at least should be less than 0.008mm.The disclosed related data from the home and abroad does not find that also a kind of effective especially, practicable concrete grammar can reach such requirement at present.
Summary of the invention
Goal of the invention of the present invention is to provide a kind of crack method that disappears that is used for railway wheel to the lathe spindle sleeve, is processed the right footpath of wheel to realize and jumps the technical indicator that can reach 0.1mm.Another goal of the invention of the present invention also is to provide a kind of headstock that utilizes the railway wheel of this method manufacturing to lathe.
If thinking according to prior art, only thinking limitation is cooperated with static state between the rack sleeve at main shaft, people will soon be trapped among all puzzlements of the machinery that comes from the practice, technology every aspect, and extremely difficulty is found out a kind of practicable effective ways.If but we use a kind of dynamic mode of thinking instead, depend merely on machining accuracy that mechanical processing technique is difficult to realize and be transformed to a kind of dynamic deformation process of being controlled by mechanical compress a kind of brand-new thinking of obviously can yet be regarded as this.Because people know, the elastic deformability who can appropriateness increases sleeve by structural change, in a very small scope, make it to produce a kind of uniform appropriateness distortion and be easy to realize, and more meaningfully this external force is adjustable easy control by a kind of uniform external force.
We have designed following technical scheme according to above-mentioned thinking: install gap between timing main shaft and the rack sleeve additional at the machine of lathe and only need be controlled within the suitable precision and get final product, within 0.04mm.Needs according to strain will be corresponding to the wall thickness reduction at rack sleeve inner sleeve cavity place, it is close with it to set up a shape in this sleeve cavity again, size is than smaller sleeve mandrel, between the inwall of the periphery of sleeve mandrel and sleeve cavity, form a narrow annular chuck, at this annular chuck and be located at that pilot medium in the sleeve mandrel distributes and the pressure regulation tube chamber in be full of lipid pilot medium, when the work of this lathe in the process of top top tight workpiece, compress lipid pilot medium by its pressure and make rack sleeve rising distortion, control gap between main shaft and its rack sleeve with this, and remain in the gap precision scope of requirement
Above-mentioned lipid pilot medium is that solid-state lipid material is good to select for use under the normal temperature, wherein is preferred with glycerine.
In order to realize above-mentioned technical process, need existing railway wheel is done following improvement to spindle stock from equipment, gap preparation between main shaft and its rack sleeve is used designing requirement a little less than lathe, corresponding to the wall thickness at rack sleeve inner sleeve cavity place according to the suitable attenuate of the needs of strain, it is close with it to set up a shape in this sleeve cavity again, size is than smaller sleeve mandrel, between the inwall of the periphery of sleeve mandrel and sleeve cavity, form a narrow annular chuck, this annular chuck is connected with the pilot medium pressure regulation pipeline that is opened on sleeve mandrel outer end by the pilot medium distribution duct that evenly is provided with in the sleeve mandrel, also is provided with a pressure-storing cavity at the opening part of pilot medium pressure regulation pipeline.The outer end of this sleeve mandrel is installed on the end face that tailstock sleeve moves turn-screw by fixed flange and adpting flange cover.Between adpting flange cover and sleeve mandrel, a cover pilot medium pressue device is set, comprise that a top is filled in and one be provided with the rubber disc of hemisphere capsule with reservoir pressure groove corresponding position.In above-mentioned pipeline, annular chuck, pressure-storing cavity and hemisphere capsule, be full of lipid pilot medium.
The invention has the beneficial effects as follows owing to the tolerance fit of a kind of static state between main shaft and its sleeve of main shaft is for conversion into a kind of dynamic mechanically parameter transformation process of dynamic adjustable formula, add a difficult problem thereby avoided some machines harsh and that be difficult for realizing, the solution of correlation technique problem is simplified greatly.Confirm by test, if getting pressure during design is 1700Kg, dress glycerine place rack sleeve wall thickness is got 40mm, learn that through finite element analysis computation sleeve rising deflection is 0.033mm, under such gap precision preparation, realize to take turns diameter and jump technical indicator to force down 0.1mm obviously be no problem.Adopt this design lathe through after the Installation and Debugging, begun to try out, the wheel diameter of actual processing is jumped and is reached 0.007mm.
Description of drawings
Below in conjunction with the drawings and specific embodiments the present invention is done to describe in detail
Fig. 1 is a headstock structural representation of the present invention
Fig. 2 is the local A-A generalized section at chuck place among Fig. 1
Fig. 3 is the partial enlarged drawing of cooperation place between main shaft and its rack sleeve among Fig. 1
The specific embodiment
Example 1
The crack method that disappears of the present invention is as follows;
The gap that installs additional between timing control main shaft and its rack sleeve at the machine of lathe is within the 0.04mm, with the wall thickness reduction of rack sleeve to 40mm, to increase its rigidity.In rack sleeve, be full of a kind of lipid pilot medium glycerine this moment.When the work of this lathe, in the process of top top tight workpiece, compress glycerine by its pressure and make the distortion of rack sleeve rising, control the gap between main shaft and its rack sleeve and remain in the gap precision scope of requirement with this.
Example 2
Following spindle stock for realizing disappearing the present invention the crack method making:
As Fig. 1, shown in Figure 3, in order to realize above-mentioned technical process, need existing railway wheel is done following improvement to spindle stock from equipment, when lathe assembles, gap preparation between main shaft 17 and the rack sleeve 1 is got 0.04mm in this example a little less than the lathe instructions for use.Wall thickness corresponding to rack sleeve 1 inner sleeve cavity 2 places reduces to 40mm, to increase the elastic deformability of rack sleeve 1.Set up again in this sleeve cavity 2 that shape is close with it, size is than smaller solid sleeve mandrel 3, forms a narrow annular chuck 4 between the inwall of the periphery of sleeve mandrel 3 and sleeve cavity 2, the gap of annular chuck 4 is 5mm in this example.This annular chuck 4 is connected with the pilot medium pressure regulation pipeline 6 that axially is provided with, is opened on sleeve mandrel 3 outer ends at sleeve mandrel 3 axis places by the pilot medium distribution duct 5 that radially evenly is provided with in sleeve mandrel 3, also is provided with a pressure-storing cavity 7 at the opening part of pilot medium pressure regulation pipeline 6; The outer end of sleeve mandrel 3 is installed on the end face that tailstock sleeve moves turn-screw 11 by fixed flange 10 and adpting flange cover 9; Between adpting flange cover 9 and sleeve mandrel 3, a cover pilot medium pressue device is set, comprises that a top fills in 13 and one and be provided with the rubber disc 12 of hemisphere capsule 16 with pressure-storing cavity 7 corresponding positions; The plug end of top plug 13 withstands on the hemisphere Nang16Chu on the rubber disc 12, and hemisphere capsule 16 forms a spherical compression body with pressure-storing cavity 7; In above-mentioned pipeline 5,6, annular chuck 4, pressure-storing cavity 7 and hemisphere capsule 16, be full of lipid pilot medium 8.
Shown in Figure 3 is the part sectioned view at chuck place among Fig. 1, when the work of this lathe in the process of top top tight workpiece, compress hemisphere capsules 16 by its pressure by top plug 13, be passed to the inwall of sleeve 1 by the lipid pilot medium 8 in the hemisphere capsule 16, make the distortion of sleeve 1 rising, control gap between main shaft and its sleeve 1 in the hope of reaching claimed condition with this, above-mentioned pressure is regulated by the adjustment pressure springs 15 that hold out against in the case 14.
Claims (3)
1, a kind of railway wheel is to the crack method that disappears of lathe spindle sleeve, it is characterized in that: install gap between timing main shaft and the rack sleeve additional at the machine of lathe and only need be controlled within the suitable precision and get final product, needs according to strain will be corresponding to the wall thickness reduction at rack sleeve inner sleeve cavity place, it is close with it to set up a shape in this sleeve cavity again, size is than smaller sleeve mandrel, between the inwall of the periphery of sleeve mandrel and sleeve cavity, form a narrow annular chuck, at this annular chuck and be located at that pilot medium in the sleeve mandrel distributes and the pressure regulation tube chamber in be full of lipid pilot medium, when the work of this lathe in the process of top top tight workpiece, compress lipid pilot medium by its pressure and make rack sleeve rising distortion, control gap between main shaft and its rack sleeve with this, and remain in the gap precision scope of requirement.
2, a kind of railway wheel according to claim 1 is characterized in that the crack method that disappears of lathe spindle sleeve: described lipid pilot medium is a glycerine.
3, a kind of headstock that utilizes railway wheel as claimed in claim 1 that the crack method that disappears of lathe spindle sleeve is made, it is characterized in that: the gap preparation between main shaft (17) and the rack sleeve (1) is used designing requirement a little less than lathe, the wall thickness of locating corresponding to rack sleeve (1) inner sleeve cavity (2) is according to the needs attenuate setting of strain, it is close with it to set up a shape in this sleeve cavity (2) again, size is than smaller sleeve mandrel (3), between the inwall of the periphery of sleeve mandrel (3) and sleeve cavity (2), form a narrow annular chuck (4), this annular chuck (4) is connected with the pilot medium pressure regulation pipeline (6) that is opened on sleeve mandrel (3) outer end by the pilot medium distribution duct (5) that evenly is provided with in sleeve mandrel (3), also is provided with a pressure-storing cavity (7) at the opening part of pilot medium pressure regulation pipeline (6); The outer end of this sleeve mandrel (3) is installed on the end face that tailstock sleeve moves turn-screw (11) by fixed flange (10) and adpting flange cover (9); One cover pilot medium pressue device is set between adpting flange cover (9) and sleeve mandrel (3), comprises that a top plug (13) and one are being provided with the rubber disc (12) of hemisphere capsule (16) with reservoir pressure groove (7) corresponding position; In above-mentioned pipeline (5,6), annular chuck (4), pressure-storing cavity (7) and hemisphere capsule (16), be full of lipid pilot medium (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200610151037XA CN100515625C (en) | 2006-11-13 | 2006-11-13 | Backlash eliminating method for spindle sleeve of railway lathe and spindle head stock manufactured by the method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200610151037XA CN100515625C (en) | 2006-11-13 | 2006-11-13 | Backlash eliminating method for spindle sleeve of railway lathe and spindle head stock manufactured by the method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101088683A CN101088683A (en) | 2007-12-19 |
| CN100515625C true CN100515625C (en) | 2009-07-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200610151037XA Expired - Fee Related CN100515625C (en) | 2006-11-13 | 2006-11-13 | Backlash eliminating method for spindle sleeve of railway lathe and spindle head stock manufactured by the method |
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| Country | Link |
|---|---|
| CN (1) | CN100515625C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109630780B (en) * | 2019-01-31 | 2024-04-19 | 中国工程物理研究院机械制造工艺研究所 | Air supporting rotary joint |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4366735A (en) * | 1980-08-25 | 1983-01-04 | Dubois Sr Russell E | Workpiece holding device |
| US4738187A (en) * | 1985-10-23 | 1988-04-19 | Roehm Guenter H | Self-lubricating hydraulic actuator for power chuck |
| GB2224678A (en) * | 1988-11-10 | 1990-05-16 | Terry William Portlock | Mandrel |
| US6311987B1 (en) * | 1997-03-06 | 2001-11-06 | Unicraft Oy | Hydraulic pressurizing arrangements |
| CN1347353A (en) * | 2000-02-16 | 2002-05-01 | 夹紧工具工厂申克两合公司 | Expansion chuck tool |
| WO2005097383A1 (en) * | 2004-04-03 | 2005-10-20 | Kennametal Inc. | Hydraulic expanding chuck |
| DE202005018002U1 (en) * | 2005-11-17 | 2006-01-12 | Deckel Maho Pfronten Gmbh | motor spindle |
| EP1529585B1 (en) * | 2003-11-05 | 2006-03-01 | Schunk GmbH & Co. KG Spann- und Greiftechnik | Expanding clamping device |
-
2006
- 2006-11-13 CN CNB200610151037XA patent/CN100515625C/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4366735A (en) * | 1980-08-25 | 1983-01-04 | Dubois Sr Russell E | Workpiece holding device |
| US4738187A (en) * | 1985-10-23 | 1988-04-19 | Roehm Guenter H | Self-lubricating hydraulic actuator for power chuck |
| GB2224678A (en) * | 1988-11-10 | 1990-05-16 | Terry William Portlock | Mandrel |
| US6311987B1 (en) * | 1997-03-06 | 2001-11-06 | Unicraft Oy | Hydraulic pressurizing arrangements |
| CN1347353A (en) * | 2000-02-16 | 2002-05-01 | 夹紧工具工厂申克两合公司 | Expansion chuck tool |
| EP1529585B1 (en) * | 2003-11-05 | 2006-03-01 | Schunk GmbH & Co. KG Spann- und Greiftechnik | Expanding clamping device |
| WO2005097383A1 (en) * | 2004-04-03 | 2005-10-20 | Kennametal Inc. | Hydraulic expanding chuck |
| DE202005018002U1 (en) * | 2005-11-17 | 2006-01-12 | Deckel Maho Pfronten Gmbh | motor spindle |
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| Publication number | Publication date |
|---|---|
| CN101088683A (en) | 2007-12-19 |
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Granted publication date: 20090722 Termination date: 20161113 |