CN102615559A - Fine machining device and machining method of excircle of big tapered-hole spindle of large gear milling machine - Google Patents
Fine machining device and machining method of excircle of big tapered-hole spindle of large gear milling machine Download PDFInfo
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- CN102615559A CN102615559A CN2012101149086A CN201210114908A CN102615559A CN 102615559 A CN102615559 A CN 102615559A CN 2012101149086 A CN2012101149086 A CN 2012101149086A CN 201210114908 A CN201210114908 A CN 201210114908A CN 102615559 A CN102615559 A CN 102615559A
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Abstract
The invention relates to a fine machining device and a machining method of an excircle of a big tapered-hole spindle of a large gear milling machine. The fine machining device comprises a mandrel body, a shaft plug, a taper plate, a taper sleeve, a conical-face washer, a spherical washer, round nuts, bolts and washers and is characterized in that the external circumferential surface at one end of the mandrel body is provided with the taper plate, and the external side of the end part is further provided with the shaft plug; the taper plate, the shaft plug and the mandrel body are integrally welded and are connected with the spindle through the bolts; the other end of the mandrel body from the end part to the middle part of the mandrel body is sequentially sleeved with the nut, the spherical washer, the conical-face washer and the taper sleeve; the nut is connected with the external thread of the mandrel body; the spherical surface of the spherical washer is adjacently connected with the internal-side conical surface of the conical-face washer; a cylindrical end surface of the conical-face washer is adjacently connected with that of the taper sleeve; and the conical surface of the taper sleeve is supported against an internal-hole chamfered surface of the spindle. The fine machining device and the machining method disclosed by the invention have the advantages of simple structure, easiness in manufacturing, convenience in use, safety and reliability; and the accuracy requirement and the machining quality of the spindle are guaranteed, the machining time is shortened and the production efficiency is improved.
Description
Technical field
The invention belongs to field of machining, particularly relate to a kind of large-scale mill teeth machine big taper hole main shaft cylindrical precise machining device and processing method.
Background technology
Main shaft is the key component of all lathes, and the main shaft of mill teeth machine is no exception.The designing requirement of main shaft is very strict, and dimensional accuracy still is taper hole and outer cone and all very high with the roughness and the form and position tolerance of the cylindrical of adorning bearing.How the crudy of main shaft will directly influence the precision of lathe, even cause lathe to exceed standard and scrap.So the processing of main shaft is very crucial, particularly the fine finishining of main shaft cylindrical is particularly important.
At present, the precise machining device of main shaft cylindrical mainly adopts tapering stepped core axle or top greatly.Because the tapering mandrel is need classification to make according to the dimension precision requirement of endoporus, only does a mandrel and can't guarantee processing request, therefore needs to make several mandrels.In addition, tapering mandrel length extends along with the length of workpiece, and product specification strengthens brings main axis length to increase the weight increase, even makes the equipment of factory can't satisfy processing request at all; The also not corresponding big top coupling of the increase of hole dimension in the mandrel.Therefore guarantee that the accurate to dimension of main shaft and form and position tolerance have great difficulty, not only complex operation, production efficiency are low, but also have potential safety hazard.Particularly along with the demand of industries such as military project, wind-powered electricity generation, mine, gear machine must be to large-scale, accurate, high speed aspect development.The high accuracy of lathe, maximization, the raising that brings size, weight increasing and the accuracy class of part brings inconvenience to processing; The heavy parts particularly machined of important parts, key component and critical process etc. just receives serious challenge.Therefore, how the applicating new process new technology to carry out technological innovation just extremely urgent.
Summary of the invention
The present invention provides a kind of large-scale mill teeth machine big taper hole main shaft cylindrical precise machining device and processing method for solving the technical problem that exists in the known technology; This device and processing method have guaranteed the required precision and the crudy of main shaft; Reduce machining period, improved production efficiency.
The technical scheme that the present invention takes for the technical problem that exists in the solution known technology is:
The big taper hole main shaft of a kind of large-scale mill teeth machine cylindrical precise machining device comprises mandrel body, stifled, awl dish, tapered sleeve, taper faced washer, spheric washer, round nut, bolt and packing ring.It is characterized in that: the outer circumference surface of an end of mandrel body is provided with the awl dish, and it is stifled that the outside, this end also is provided with axle, awl dish, stifled and the mandrel body is integrally welded, and be connected through bolt with main shaft; On the other end of mandrel body; Be coated with nut, spheric washer, taper faced washer and tapered sleeve from the mandrel end of body successively to the middle part; Nut is connected with the external screw thread of mandrel body; The inboard conical surface adjacency of the sphere of spheric washer and taper faced washer, the cylinder end face of taper faced washer and the cylinder end surfaces of tapered sleeve, the conical surface of tapered sleeve props up the endoporus fillet surface of main shaft.
The big taper hole main shaft of large-scale mill teeth machine cylindrical method for fine finishing is characterized in that: comprise four procedures that use the described big taper hole main shaft cylindrical precise machining device of claim 1: the outer mill preface before one, nitrogenize-ice-cold processing; Two, the outer mill preface after nitrogenize-ice-cold processing; Three, the outer mill preface after the qualitative processing; Four, super grinding preface; Should check earlier when using this device or the location basal plane of reconditioning mandrel; Utilize the screw of processed main shaft end face; Use securing member that awl dish and spindle taper hole on the mandrel are compressed; The other end adopts the chamfering locking with the tapered sleeve and the main shaft endoporus of mandrel body of taper faced washer, spheric washer and nut, this device and processed main shaft is become one carry out the processing of super grinding.
Advantage and good effect that the present invention has are: because the present invention adopts technique scheme; During operation; During operation, processed main shaft is contained on the mandrel body, the taper hole conical surface and the taper hole end face with processed main shaft one end is benchmark earlier; Utilize the screw of processed main shaft end face, use bolt, packing ring that awl dish and the spindle taper hole on the mandrel compressed; Endoporus fillet surface with the processed main shaft other end is a benchmark again, through the chamfering locking with tapered sleeve on the mandrel body and main shaft endoporus of taper faced washer, spheric washer and round nut, this device and processed main shaft is become one.Adopt this device fine finishining main shaft cylindrical no matter dimensional accuracy still is a form and position tolerance all can reach requirement, and then guaranteed the crudy of main shaft.This device is not only simple in structure, be easy to make, esy to use, safe and reliable, also shortened machining period, increase substantially crudy and productivity ratio, the increase economic benefit cuts down finished cost.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the main shaft sketch map that adopts the present invention's processing.
Among the figure: 1, bolt; 2, packing ring; 3, axle is stifled; 4, awl dish; 5, mandrel body; 6, main shaft; 7, tapered sleeve; 8, taper faced washer; 9, spheric washer; 10, round nut.
The specific embodiment
For further understanding summary of the invention of the present invention, characteristics and effect, the following examples of giving an example now, and conjunction with figs. specifies as follows:
See also Fig. 1; The big taper hole main shaft of large-scale mill teeth machine cylindrical precise machining device; Processed main shaft is installed on the mandrel body 5, and the outer circumference surface of an end of mandrel body 5 is provided with awl dish 4, and this outside, end also is provided with axle stifled 3; Awl dish 4, stifled 3 integrally welded with mandrel body 5, and be connected with main shaft 6 through bolt 1, packing ring 2; Be coated with round nut 10, spheric washer 9, taper faced washer 8 and tapered sleeve 7 from the mandrel end of body successively to the middle part on the other end of mandrel body 5; Nut 10 is connected with the external screw thread of mandrel body 6; The inboard conical surface adjacency of the sphere of spheric washer 9 and taper faced washer 8; The cylinder end face of taper faced washer 8 and the cylinder end surfaces of tapered sleeve 7, the conical surface of tapered sleeve 7 props up the endoporus fillet surface of main shaft 6.
See Figure 2, Figure 2 is processed using the main shaft 6 of the apparatus, its main dimensions, tolerances and precision requirements are, in units of mm: 1, Material: 38CrMoAlA; treatment: T275D0.5-900 (except thread); 2, Size: Maximum outer diameter
Maximum tapered bore diameter
taper 1:20; minimum bore diameter
chamfer 2 × 30 °, roughness 0.4; total length 732; outer cone big end size
taper 1:20; mounted bearings Cylindrical
spindle end faces there were six screw holes; 3 requirements: two mounted bearings Cylindrical basis A and B; roughness of 0.8; and bearing with grinding gap 0.003-0.008; roundness, concentricity, parallelism were: 0.001,
0.002; outer cone and tapered bore roughness of 0.4; beating with the reference A and B 0.002, concentricity
Big Endian face dimensions A and B with the reference vertical
The big taper hole main shaft of large-scale mill teeth machine cylindrical method for fine finishing
Designing requirement by the visible main shaft of Fig. 2 is very strict, and dimensional accuracy still is a taper hole and to reach the cylindrical that cooperates with bearing and roughness and form and position tolerance precision all very high for outer cone.Therefore the technology of main shaft is very complicated, makes its tissue stable for guaranteeing machining accuracy, and the fine finishining of main shaft cylindrical needs following four procedures.
Comprise four procedures that use the described big taper hole main shaft cylindrical precise machining device of claim 1: the outer mill preface before one, nitrogenize-ice-cold processing; Two, the outer mill preface after nitrogenize-ice-cold processing; Three, the outer mill preface after the qualitative processing; Four, super grinding operation.Should check earlier when using this device or the location basal plane of reconditioning mandrel; Utilize the screw of processed main shaft end face; Use securing member that awl dish and spindle taper hole on the mandrel are compressed; The other end adopts the chamfering locking with the tapered sleeve and the main shaft endoporus of mandrel body of taper faced washer, spheric washer and nut, this device and processed main shaft is become one carry out the processing of super grinding.
For weight reduction, the mandrel body 5 among Fig. 1 is made blind hole end face welding axle stifled 3, and that the mandrel body is become is hollow, and awl dish 4 makes it to become one with the method for mandrel body through welding; The 2nd, the processed main shaft 6 shown in Fig. 2 is contained on the mandrel body 5; At first the taper hole conical surface and the taper hole end face with processed main shaft 6 one ends is benchmark; Utilize the screw of processed main shaft end face, use bolt 1, packing ring 2 that awl dish on the mandrel 4 and spindle taper hole are compressed; Be benchmark with processed main shaft 6 other end endoporus fillet surfaces then, adopt the chamfering locking with tapered sleeve 7 with the main shaft endoporus of mandrel body 5 of taper faced washer 8, spheric washer 9 and round nut 10, this sample device and processed main shaft just become one.
The accurately machined step of main shaft cylindrical is:
One, the outer mill preface before nitrogenize-ice-cold processing.Centering benchmark A, B two cylindricals are beated and are not more than 0.03: 1, grind each cylindrical and stay mill 0.18-0.20 and require benchmark A, B two excircle dimensions consistent (technology with); 2,1: 20 awl cylindrical stays mill 0.18-0.20 and joins contact-making surface more than 75% with ring gauge; 3, each cylindrical is beated and is not more than 0.01.
Two, the outer mill preface after nitrogenize-ice-cold processing.Centering benchmark A, B two cylindricals are beated and are not more than 0.008: 1, grind each cylindrical and stay mill 0.10-0.12 and require benchmark A, B two excircle dimensions consistent (technology with); 2,1: 20 awl cylindrical stays mill 0.10-0.12 and joins contact-making surface more than 80% with ring gauge; 3, circularity franchise, tapering franchise all reach 0.0015.
Three, the outer mill preface after the qualitative processing.Centering benchmark A, B two cylindricals are beated and are not more than 0.004: 1, grind each cylindrical and stay mill 0.06-0.07 and require benchmark A, B two excircle dimensions consistent (technology with); 2,1: 20 awl cylindrical stays mill 0.06-0.07 and joins contact-making surface more than 85% with ring gauge; 3, circularity franchise, tapering franchise all reach 0.001.
Four, super grinding preface; This preface is at first checked or the location end face of reconditioning mandrel; Glacing flatness is not more than 0.001 end face run-out and is not more than 0.001, and just the processed main shaft 6 shown in Fig. 2 is contained on the mandrel body 5 again, is benchmark with the taper hole and the taper hole end face of processed main shaft one end; Utilize the screw of processed main shaft end face, use bolt 1, packing ring 2 that awl dish on the mandrel 4 and spindle taper hole are compressed; The other end adopts the chamfering locking with tapered sleeve 7 with the main shaft endoporus of mandrel body 5 of taper faced washer 8, spheric washer 9 and round nut 10, and centering benchmark A, B two cylindricals are beated and are not more than 0.0012: 1, grind each cylindrical to requiring then; 2, mill benchmark A, B cylindrical guarantee gap 0.003-0.008 with the bearing match grinding respectively and make marks; 3,1: 20 awl of mill cylindrical is to requiring and joining contact-making surface more than 90% with ring gauge.Requirements: datum A, B two cylindrical concentricity
do to
and other important cylindrical outer cone on the basis of A, B runout tolerance 0.0015; rest assured design requirements.Just guaranteed the designing requirement and the crudy of processed main shaft cylindrical at last through this high-precision centre bore in device two ends, all can reach requirement and received good effect through no matter to check dimensional accuracy still be form and position tolerance.
Although combine accompanying drawing that the preferred embodiments of the present invention are described above; But the present invention is not limited to the above-mentioned specific embodiment, and the above-mentioned specific embodiment only is schematically, is not restrictive; Those of ordinary skill in the art is under enlightenment of the present invention; Not breaking away under the scope situation that aim of the present invention and claim protect, can also make a lot of forms, these all belong within protection scope of the present invention.
Claims (2)
1. the one kind large-scale big taper hole main shaft of mill teeth machine cylindrical precise machining device comprises mandrel body, stifled, awl dish, tapered sleeve, taper faced washer, spheric washer, round nut, bolt and packing ring.It is characterized in that: the outer circumference surface of an end of mandrel body is provided with the awl dish, and it is stifled that the outside, this end also is provided with axle, awl dish, stifled and the mandrel body is integrally welded, and be connected through bolt with main shaft; On the other end of mandrel body; Be coated with nut, spheric washer, taper faced washer and tapered sleeve from the mandrel end of body successively to the middle part; Nut is connected with the external screw thread of mandrel body; The inboard conical surface adjacency of the sphere of spheric washer and taper faced washer, the cylinder end face of taper faced washer and the cylinder end surfaces of tapered sleeve, the conical surface of tapered sleeve props up the endoporus fillet surface of main shaft.
2. the one kind large-scale big taper hole main shaft of mill teeth machine cylindrical method for fine finishing is characterized in that: comprise four procedures that use the described big taper hole main shaft cylindrical precise machining device of claim 1: the outer mill preface before one, nitrogenize-ice-cold processing; Two, the outer mill preface after nitrogenize-ice-cold processing; Three, the outer mill preface after the qualitative processing; Four, super grinding preface; Should check earlier when using this device or the location basal plane of reconditioning mandrel; Utilize the screw of processed main shaft end face; Use securing member that awl dish and spindle taper hole on the mandrel are compressed; The other end adopts the chamfering locking with the tapered sleeve and the main shaft endoporus of mandrel body of taper faced washer, spheric washer and nut, this device and processed main shaft is become one carry out the processing of super grinding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210114908.6A CN102615559B (en) | 2012-04-19 | 2012-04-19 | Fine machining device and machining method of excircle of big tapered-hole spindle of large gear milling machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210114908.6A CN102615559B (en) | 2012-04-19 | 2012-04-19 | Fine machining device and machining method of excircle of big tapered-hole spindle of large gear milling machine |
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| CN102615559A true CN102615559A (en) | 2012-08-01 |
| CN102615559B CN102615559B (en) | 2014-03-26 |
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| CN201210114908.6A Expired - Fee Related CN102615559B (en) | 2012-04-19 | 2012-04-19 | Fine machining device and machining method of excircle of big tapered-hole spindle of large gear milling machine |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103111880A (en) * | 2013-02-21 | 2013-05-22 | 上海电气电站设备有限公司 | Clamping and supporting device used for adjusting guide sleeve processing |
| CN104044023A (en) * | 2013-03-16 | 2014-09-17 | 中煤张家口煤矿机械有限责任公司 | Hollow shaft outer circle grinding high-precision spring plug |
| CN106271935A (en) * | 2015-06-26 | 2017-01-04 | 北京航天计量测试技术研究所 | A kind of air bearing Thrust Faces and the polishing method of axis of rotation perpendicularity |
| CN106514443A (en) * | 2016-12-14 | 2017-03-22 | 济南第机床有限公司 | Special mandrel tool for accurately grinding excircle of main shaft of high-precision numerical control machine tool |
| CN112621111A (en) * | 2020-11-16 | 2021-04-09 | 中国航发西安动力控制科技有限公司 | Method for processing large-diameter conical core rod with hole |
| CN113059490A (en) * | 2021-03-09 | 2021-07-02 | 广东今科机床有限公司 | Adjustable shaft core grinding clamp |
| CN116673705A (en) * | 2023-08-03 | 2023-09-01 | 东方电气集团东方汽轮机有限公司 | Manufacturing method of high-precision sleeve part |
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| CN201906851U (en) * | 2010-12-22 | 2011-07-27 | 广元瑞峰精工机械制造有限公司 | Clamp for processing shaft sleeve |
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| CN202668270U (en) * | 2012-04-19 | 2013-01-16 | 天津第一机床总厂 | Big taper hole main shaft excircle finish machining device of large gear milling machine |
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Patent Citations (5)
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| JP2005319553A (en) * | 2004-05-11 | 2005-11-17 | Sumitomo Denko Shoketsu Gokin Kk | Centering and machining method of workpiece |
| CN2776620Y (en) * | 2005-03-29 | 2006-05-03 | 应知信 | Special guide roller for cylindrical lapping machine |
| CN201906851U (en) * | 2010-12-22 | 2011-07-27 | 广元瑞峰精工机械制造有限公司 | Clamp for processing shaft sleeve |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103111880A (en) * | 2013-02-21 | 2013-05-22 | 上海电气电站设备有限公司 | Clamping and supporting device used for adjusting guide sleeve processing |
| CN103111880B (en) * | 2013-02-21 | 2015-09-30 | 上海电气电站设备有限公司 | For the clamping brace device of guide sleeve of adjusting valve processing |
| CN104044023A (en) * | 2013-03-16 | 2014-09-17 | 中煤张家口煤矿机械有限责任公司 | Hollow shaft outer circle grinding high-precision spring plug |
| CN106271935A (en) * | 2015-06-26 | 2017-01-04 | 北京航天计量测试技术研究所 | A kind of air bearing Thrust Faces and the polishing method of axis of rotation perpendicularity |
| CN106271935B (en) * | 2015-06-26 | 2019-08-13 | 北京航天计量测试技术研究所 | A kind of polishing method of air bearing Thrust Faces and axis of rotation verticality |
| CN106514443A (en) * | 2016-12-14 | 2017-03-22 | 济南第机床有限公司 | Special mandrel tool for accurately grinding excircle of main shaft of high-precision numerical control machine tool |
| CN112621111A (en) * | 2020-11-16 | 2021-04-09 | 中国航发西安动力控制科技有限公司 | Method for processing large-diameter conical core rod with hole |
| CN112621111B (en) * | 2020-11-16 | 2023-09-01 | 中国航发西安动力控制科技有限公司 | Processing method of large-diameter conical core rod with holes |
| CN113059490A (en) * | 2021-03-09 | 2021-07-02 | 广东今科机床有限公司 | Adjustable shaft core grinding clamp |
| CN116673705A (en) * | 2023-08-03 | 2023-09-01 | 东方电气集团东方汽轮机有限公司 | Manufacturing method of high-precision sleeve part |
| CN116673705B (en) * | 2023-08-03 | 2023-10-13 | 东方电气集团东方汽轮机有限公司 | Manufacturing method of high-precision sleeve part |
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| CN102615559B (en) | 2014-03-26 |
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Granted publication date: 20140326 Termination date: 20200419 |