CN102615559B - 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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- CN102615559B CN102615559B CN201210114908.6A CN201210114908A CN102615559B CN 102615559 B CN102615559 B CN 102615559B CN 201210114908 A CN201210114908 A CN 201210114908A CN 102615559 B CN102615559 B CN 102615559B
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- main shaft
- washer
- mandrel body
- taper
- mandrel
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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 tooth milling machine large 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 tooth milling machine is no exception.The designing requirement of main shaft is very strict, dimensional accuracy or taper hole and outer cone and all very high with roughness and the form and position tolerance of cylindrical of dress bearing.How the crudy of main shaft will directly affect the precision of lathe, even causes lathe exceed standard and scrap.Therefore 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 tapering mandrel is to need classification to make according to the dimension precision requirement of endoporus, only do a mandrel and cannot guarantee processing request, therefore need to make several mandrels.In addition, taper core shaft length lengthens along with the length of workpiece, and product specification strengthens brings main axis length to increase weight increase, even makes the equipment of factory cannot meet processing request at all; In mandrel, the increase of hole dimension does not have corresponding large top coupling yet.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 the 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. is just subject to serious challenge.Therefore, how 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 tooth milling machine large taper hole main shaft cylindrical precise machining device and processing method for solving the technical problem existing in known technology, this device and processing method have guaranteed 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 existing in solution known technology is:
The large taper hole main shaft of a large-scale tooth milling machine cylindrical precise machining device, comprises that mandrel body, axle are stifled, cone dish, tapered sleeve, taper faced washer, spheric washer, round nut, bolt and packing ring.It is characterized in that: the outer circumference surface of one end of mandrel body is provided with cone dish, it is stifled that this outside, end is also provided with axle, and cone dish, axle block up with mandrel body integrally welded, and are bolted with main shaft; On the other end of mandrel body, from mandrel end of body, to middle part, be coated with successively nut, spheric washer, taper faced washer and tapered sleeve, nut is connected with the external screw thread of mandrel body, the inner side 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 inner bore chamfering face of main shaft.
The large taper hole main shaft of large-scale tooth milling machine cylindrical method for fine finishing, is characterized in that: comprise that right to use requires four procedures of the large taper hole main shaft cylindrical precise machining device described in 1: the outer mill order before one, nitrogenize-ice-cold processing; Two, the outer mill order after nitrogenize-ice-cold processing; Three, the outer mill order after qualitative processing; Four, super grinding order; While using this device, should first check or the location basal plane of reconditioning mandrel, utilize the screw of processed main shaft end face, use securing member that the cone dish on mandrel and spindle taper hole are compressed, the other end adopts taper faced washer, spheric washer and nut by the chamfering locking of the tapered sleeve of mandrel body and inner hole of spindle, this device and processed main shaft is become one and 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 mandrel body, the first taper hole conical surface and taper hole end face of take processed main shaft one end is benchmark, utilize the screw of processed main shaft end face, use bolt, packing ring that the cone dish on mandrel and spindle taper hole are compressed; The inner bore chamfering face of the processed main shaft other end of take is again benchmark, by taper faced washer, spheric washer and round nut, the chamfering of the tapered sleeve on mandrel body and inner hole of spindle is locked, and this device and processed main shaft are become one.Adopt no matter dimensional accuracy or form and position tolerance all can reach requirement of this device fine finishining main shaft cylindrical, and then guaranteed the crudy of main shaft.This device not only simple in structure, be easy to manufacture, esy to use, safe and reliable, also shortened machining period, increase substantially crudy and productivity ratio, increase economic benefit cuts down finished cost.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the main shaft schematic diagram that adopts the present invention's processing.
In figure: 1, bolt; 2, packing ring; 3, axle is stifled; 4, cone 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, Characteristic, hereby exemplify following examples, and coordinate accompanying drawing to be described in detail as follows:
Refer to Fig. 1, the large taper hole main shaft of large-scale tooth milling machine cylindrical precise machining device, processed main shaft is arranged on mandrel body 5, the outer circumference surface of one end of mandrel body 5 is provided with cone dish 4, this outside, end is also provided with axle stifled 3, cone dish 4, axle stifled 3 and mandrel body 5 are integrally welded, and are connected with main shaft 6 by bolt 1, packing ring 2; On the other end of mandrel body 5, from mandrel end of body, to middle part, be coated with successively round nut 10, spheric washer 9, taper faced washer 8 and tapered sleeve 7, nut 10 is connected with the external screw thread of mandrel body 6, the inner side 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 inner bore chamfering face of main shaft 6.
Refer to Fig. 2, Fig. 2 is for adopting the main shaft 6 of this device processing, and its key dimension, tolerance and required precision are that unit is mm:1, material: 38CrMoAlA; Heat treatment: T275D0.5-900 (except screw thread); 2, size: maximum outside diameter
; Maximum taper hole diameter
tapering 1:20; Minimum diameter of bore
, 2 * 30 ° of chamferings, roughness 0.4; Overall length 732; The large end size of outer cone
tapering 1:20; Dress bearing top circle
; Main shaft both ends of the surface have respectively 6 screw holes; 3 require: the two place's dress bearing top circles of take are benchmark A and B; Roughness 0.8; With bearing match grinding gap 0.003-0.008; Circularity, axiality, the depth of parallelism are respectively: 0.001,
0.002; Outer cone and taper hole roughness 0.4; Beat 0.002 with benchmark A and B, axiality
, hold greatly end face and benchmark A and the B perpendicularity of size
The large taper hole main shaft of large-scale tooth milling machine cylindrical method for fine finishing
The designing requirement of main shaft is very strict as seen from Figure 2, dimensional accuracy or taper hole and outer cone and all very high with the cylindrical of bearing fit and roughness and form and position tolerance precision.Therefore the technique of main shaft is very complicated, and for guaranteeing that machining accuracy makes its tissue stable, the fine finishining of main shaft cylindrical needs following four procedures.
Comprise that right to use requires four procedures of the large taper hole main shaft cylindrical precise machining device described in 1: the outer mill order before one, nitrogenize-ice-cold processing; Two, the outer mill order after nitrogenize-ice-cold processing; Three, the outer mill order after qualitative processing; Four, super grinding operation.While using this device, should first check or the location basal plane of reconditioning mandrel, utilize the screw of processed main shaft end face, use securing member that the cone dish on mandrel and spindle taper hole are compressed, the other end adopts taper faced washer, spheric washer and nut by the chamfering locking of the tapered sleeve of mandrel body and inner hole of spindle, this device and processed main shaft is become one and carry out the processing of super grinding.
For weight reduction, the mandrel body 5 in Fig. 1 is made to blind hole end face welding axle stifled 3, and that mandrel body is become is hollow, and cone dish 4 makes it to become one with the method for mandrel body by welding; The 2nd, the processed main shaft 6 shown in Fig. 2 is contained on mandrel body 5, first the taper hole conical surface and the taper hole end face of processed main shaft 6 one end of take is benchmark, utilize the screw of processed main shaft end face, use bolt 1, packing ring 2 that the cone dish on mandrel 4 and spindle taper hole are compressed; Then processed main shaft 6 other end inner bore chamfering faces of take are benchmark, adopt the chamfering locking with inner hole of spindle by the tapered sleeve of mandrel body 57 of taper faced washer 8, spheric washer 9 and round nut 10, and this sample device and processed main shaft just become one.
The accurately machined step of main shaft cylindrical is:
One, the outer mill order 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 (technique with); 2,1:20 cone 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 order 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 (technique with); 2,1:20 cone 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 order after 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 (technique with); 2,1:20 cone 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 order, first this order is 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, just the processed main shaft 6 shown in Fig. 2 is contained on mandrel body 5 again, taper hole and the taper hole end face of processed main shaft one end of take is benchmark, utilize the screw of processed main shaft end face, use bolt 1, packing ring 2 that the cone dish on mandrel 4 and spindle taper hole are compressed; The other end adopts the chamfering locking with inner hole of spindle by the tapered sleeve of mandrel body 57 of taper faced washer 8, spheric washer 9 and round nut 10, and then centering benchmark A, B two cylindricals are beated and are not more than 0.0012:1, grind each cylindrical to requiring; 2, mill benchmark A, B cylindrical guarantee gap 0.003-0.008 and make marks with bearing match grinding respectively; 3, mill 1:20 cone cylindrical is to requiring and joining contact-making surface more than 90% with ring gauge.Require: the axiality of benchmark A, B two cylindricals
do to
; Cone cylindrical and other important cylindrical are to benchmark A, the B franchise 0.0015 of beating; All the other guarantee designing requirement.Finally by this high-precision centre bore in device two ends, just guarantee designing requirement and the crudy of processed main shaft cylindrical, through no matter checking dimensional accuracy or form and position tolerance all can reach requirement, received good effect.
Although by reference to the accompanying drawings the preferred embodiments of the present invention are described above; but the present invention is not limited to the above-mentioned specific embodiment; the above-mentioned specific embodiment is only schematic; be not restrictive; those of ordinary skill in the art is under enlightenment of the present invention; not departing from the scope situation that aim of the present invention and claim protect, can also make a lot of forms, within these all belong to protection scope of the present invention.
Claims (2)
1. the large taper hole main shaft of a large-scale tooth milling machine cylindrical precise machining device, comprises that mandrel body, axle are stifled, cone dish, tapered sleeve, taper faced washer, spheric washer, round nut, bolt and packing ring.It is characterized in that: the outer circumference surface of one end of mandrel body is provided with cone dish, it is stifled that this outside, end is also provided with axle, and cone dish, axle block up with mandrel body integrally welded, and are bolted with main shaft; On the other end of mandrel body, from mandrel end of body, to middle part, be coated with successively nut, spheric washer, taper faced washer and tapered sleeve, nut is connected with the external screw thread of mandrel body, the inner side 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 inner bore chamfering face of main shaft.
2. the large taper hole main shaft of a large-scale tooth milling machine cylindrical method for fine finishing, is characterized in that: comprise that right to use requires four procedures of the large taper hole main shaft cylindrical precise machining device described in 1: the outer mill order before one, nitrogenize-ice-cold processing; Two, the outer mill order after nitrogenize-ice-cold processing; Three, the outer mill order after qualitative processing; Four, super grinding order; While using this device, should first check or the location basal plane of reconditioning mandrel, utilize the screw of processed main shaft end face, use securing member that the cone dish on mandrel and spindle taper hole are compressed, the other end adopts taper faced washer, spheric washer and nut by the chamfering locking of the tapered sleeve of mandrel body and inner hole of spindle, this device and processed main shaft is become one and 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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102615559A CN102615559A (en) | 2012-08-01 |
| CN102615559B true 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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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN104044023B (en) * | 2013-03-16 | 2017-02-15 | 中煤张家口煤矿机械有限责任公司 | Hollow shaft outer circle grinding high-precision spring plug |
| 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 |
| 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 |
| 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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|---|---|---|---|---|
| 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 |
| CN102357825A (en) * | 2011-09-07 | 2012-02-22 | 池州市邦鼐机电科技有限公司 | Clamping device for processing slender axle top hole |
| 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 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005319553A (en) * | 2004-05-11 | 2005-11-17 | Sumitomo Denko Shoketsu Gokin Kk | Centering and machining method of workpiece |
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2012
- 2012-04-19 CN CN201210114908.6A patent/CN102615559B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN102357825A (en) * | 2011-09-07 | 2012-02-22 | 池州市邦鼐机电科技有限公司 | Clamping device for processing slender axle top hole |
| 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 |
Non-Patent Citations (1)
| Title |
|---|
| JP特开2005-319553AA 2005.11.07 |
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