CN102078966A - Machining process for slender axle - Google Patents
Machining process for slender axle Download PDFInfo
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- CN102078966A CN102078966A CN2009102473780A CN200910247378A CN102078966A CN 102078966 A CN102078966 A CN 102078966A CN 2009102473780 A CN2009102473780 A CN 2009102473780A CN 200910247378 A CN200910247378 A CN 200910247378A CN 102078966 A CN102078966 A CN 102078966A
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- axle
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- lathe
- tailstock
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Abstract
The invention provides a machining process for a slender axle, which comprises the steps of: machining central screwed holes at both ends of a machined slender axle; clamping one end of the axle by a lathe spindle chuck while clamping the other end by a lathe tailstock chuck fixed with a long axle stretching tool; jointing a flange disc and the lathe tailstock chuck by bolts, wherein the inner diameter of a bearing is tightly matched with the external circular diameter of a pointed cone on the lathe tailstock chuck and the outer diameter of the bearing is tightly matched with a bearing chamber of the flange disc, the bearing is embedded in the bearing chamber of the flange disc, and the bearing is fixed on a top plate with bolts so that the bearing is in a fixed state; thrusting the lathe tailstock chuck of a lathe backward and locking the lathe tailstock chuck so that the axle is in a horizontal straightened state integrally.
Description
Technical field
The invention belongs to field of machining, be specifically related to a kind of machining slender shaft technology that is applicable to.
Background technology
Now, engineering goods become more diverse, and develop towards high accuracy, low surface roughness direction.Axial workpiece uses in mechanical industry extensively, in space flight, automobile, printing machinery, micro-machine and heavily loaded quick conveying device application is arranged all.Major axis processing is Machining of Shaft-type Parts, also is a difficult point in the machined.By the processing experience, the ratio 40～60 with axial length and shaft diameter is referred to as slender axles usually.Because this kind axle flexibility is big, poor rigidity.During cutting, because the radially amount of deflection that centrifugal force produced that the deadweight of axle produces, and in the turning processing, the system of processing vibration takes place in the manufacturing process system that lathe-anchor clamps-cutter constituted, more than these factors all influence the machining accuracy of major axis.
Traditional axle processing and loading clamp mode is: Double Tops point clamping or two chuck mode clamping.These two kinds of installation way make processed axle be in an extruded state, and as shown in Figure 1, the axle body section upwards easily produces flexural deformation at the diameter of axle.This clamping technology is little for draw ratio, axial length is short or the bigger axle class of shaft run-out tolerance amount can adopt.
The invention provides a kind of new processing technology and special tooling, make processed major axis be in the axial tension stress, as shown in Figure 2, thereby avoid making processed major axis to be in the state of being squeezed.
Summary of the invention
The object of the present invention is to provide a kind of new technology that is applicable to slender axles processing, avoid making processed major axis to be in the state of being squeezed, and make it be in the axial tension stress.Slim axle processing of the present invention be applicable to processing draw ratio 40～60, circle beat little, the slender axles that have surface accuracy to require.
Another object of the present invention provide a kind of be applicable to processing draw ratio 40～60, circle beat little, the slender axles special tooling that has surface accuracy to require.
In following text, if no special instructions, described slender axles all refer to the slender axles of draw ratio 40～60.
The present invention realizes by following scheme:
The present invention improves original " traditional axle processing and loading clamp---Double Tops point clamping or two chuck mode clamping ", adopts " stretched fixation technology ", that is: Zhou a end is fixed in the spindle end of lathe, and the other end applies clamping (clamping) state of certain pulling force.Specifically as shown in Figure 3.
Specifically, the present invention is achieved in that an end of axle is fixed in the spindle end of lathe, and the other end makes processed axle be in " stretching " state by the chuck clamping on the special frock that is fixed on the lathe tailstock.
The two ends machining center screwed hole (C type) of axle.The screwed hole aperture is about 1: 2 with the ratio of axle external diameter.
The circle of slender axles is beated and surface treatment requires than general major axis height, so during this type of major axis, not only will consider installation way in processing, also will consider the coordination between the stressed and processing technology of clamping.As adopt double end folder drawing process, be suitable for draw ratio 20～30, beat 0.25～0.35 axle class of circle.This is because of the each clamping between the operation, and being held of axle a little is not same position.Machining slender shaft requires high, and therefore this double end folder drawing process is not the ideal technology scheme.With the two ends of axle machining center screwed hole (C type) separately, the clamping stress point then is a same position.Therefore, this positioning process benchmark height, good stability.Be fit to the high slender axles processing of machining accuracy.
Add man-hour, after just an end of axle was fixed in dog plate and clamping earlier, the other end then was the other end that clamps axle by special frock, and the tail-holder rack that frock is fixed on lathe adds.
Connecting this end with lathe tailstock, processing axle head screwed hole of centre (C type).
Self-control screw thread pin rod.Polished end fluting with the screw thread pin rod.Can screw or unclamp by screwdriver like this, reach the loading and unloading purpose.
The thread segment of axle head centre bore screw thread and screw thread pin rod links, and back-up ring is between axle head and nut, and the back-up ring external diameter plays the escape effect less than the diameter of axle.Nut (two) oppositely screws each other and is fixing, makes back-up ring " stretching " axle, plays the locking effect.Chuck jaws on the tailstock blocks the polished end of screw thread pin rod.
Pointed cone outer circle diameter tight fit on the internal diameter of bearing and the lathe tailstock tailstock.Like this, bearing bore diameter is fixed on the lathe pointed cone end face.The bearing chamber tight fit of the external diameter of bearing and ring flange is embedded in the bearing chamber of ring flange.Fix by top board and screw, make bearing be in fixing state, non-migration.Subsequently, the past passing that moves to right of the tailstock tail-holder rack of lathe, and locking.Make an integral body be in " level is stretching " state.
By major axis stretching frock clamping, make slender axles integral body be in " level is stretching " state.Help obtaining good machining accuracy like this.After testing, processed major axis reaches designing requirement.Slender axles require to have surface treatment: nickel plating, nickel plating phosphorus, nitrogenize, nitrogen oxidation etc.Frock need not to move after being installed on the lathe tailstock seat.Do not influence other similar operation processing yet.Major axis two ends processing belt threaded central aperture, centre bore also can be described as fabrication hole (to be processed remove) to size, thus special frock can process respectively major axis thick, in, the Seiko preface.The maximum that is not more than claw as the diameter of processed axle open be not more than the effective travel of lathe tool apart from, axial length all can be by this type frock processing major axis is installed.Major axis stretching frock can realize batch machining, enhances productivity, and reduces cost.Major axis stretching frock is suitable to be installed on the bigger lathe of spindle chuck diameter and lathe tool stroke.Frock of the present invention can be widely used in mechanical manufacturing field, as: in space flight, automobile, printing machinery, micro-machine and the underloading quick conveying device.
Description of drawings
Fig. 1 slender axles are in the axial compression view
Fig. 2 slender axles are in the axial tension view
Fig. 3 slender axles drawing process-clamping schematic diagram
Fig. 4 machined into slender axles and frock clamping figure
Fig. 5 ring flange front view
Fig. 6 is that Fig. 5 ring flange is along A-A line profile
Fig. 7 top board front view
Fig. 8 is that Fig. 7 top board is along B-B line profile
Fig. 9 screw thread lever pin front view
Figure 10 is Fig. 9 screw thread lever pin left view
Figure 11 major axis stretching frock lathe spindle end clamping schematic diagram
Figure 12 major axis stretching frock lathe tailstock clamping schematic diagram
Figure 13 major axis stretching frock lathe tailstock assembling clamping schematic diagram
Wherein, 1 lathe spindle chuck 2 spindle end screw thread lever pins, 3 spindle end locking nuts (two), 4 spindle end back-up rings, 5 processed major axis 6 tailstock back-up rings, 7 tailstock locking nuts (two), 8 tailstock screw thread lever pins, 9 lathe tailstock chucks, 10 ring flanges, 11 bearings, 12 top boards, 13 lathe tailstock top vertebras, 14 screws, 1 15 screws 2
The specific embodiment
The two ends machining center screwed hole (C type) of processed major axis 5.The screwed hole aperture is about 1: 2 with the ratio of axle external diameter
As shown in Figure 4, by 1 clamping of lathe spindle chuck, the other end makes processed major axis 5 be in extended state by tail stock frame chuck 9 clampings that are fixed with major axis stretching frock with an end of processed major axis 5.
As shown in figure 11, the clamping of lathe spindle chuck also comprises technology accessories such as spindle thread lever pin 2, principal shaft locking nut 3, main shaft back-up ring 4.Wherein, spindle thread pin rod 2 as shown in Figures 9 and 10, its two ends are respectively thread segment and polished rod section, the screwed hole of centre of thread segment and processed major axis matches, chuck jaws blocks the polished end of spindle thread pin rod 2.The polished end of spindle thread pin rod 2 fluting can screw or unclamps like this by screwdriver, reaches the loading and unloading purpose.Back-up ring 4 is between the axle head and principal shaft locking nut 3 of processed slender axles 5, and main shaft back-up ring 4 external diameters play the escape effect less than the diameter of axle of processing slim axle 5.Totally two on principal shaft locking nut 3 oppositely screws each other and fixes, and makes back-up ring " stretching " axle, plays the locking effect.
As shown in figure 12, the lathe tailstock clamping also comprises technology accessories such as tailstock screw thread lever pin 8, tailstock locking nut 7, tailstock back-up ring 6.Wherein, tailstock screw thread pin rod 8 is identical with spindle thread lever pin 2, as shown in Figures 9 and 10.All the other accessory compound modes are identical with spindle end.
As shown in figure 13, the major axis stretching frock on the tail stock frame comprises ring flange 10, bearing 11, top board 12.Ring flange as illustrated in Figures 5 and 6, top board is shown in Fig. 7 and 8.Ring flange 10 connects by screw 114 and lathe tailstock chuck 9, pointed cone 13 outer circle diameter tight fits on the internal diameter of bearing 11 and the lathe tailstock tailstock, the bearing chamber tight fit of the external diameter of bearing 11 and ring flange 10, be embedded in the bearing chamber of ring flange 10, top board 12 makes it to be in stationary state with screw 215 rigid bearings.Subsequently, the past passing that moves to right of the tailstock tail-holder rack of lathe, and locking make an integral body be in " level is stretching " state.
Claims (4)
1. slim axle processing, it is characterized in that, the two ends machining center screwed hole of described slender axles, its aperture is about 1: 2 with the ratio of axle external diameter, add man-hour earlier with an end of axle by the clamping of lathe spindle chuck, the other end makes processed axle be in extended state by the tail stock frame chuck clamping that is fixed with major axis stretching frock.
2. slim axle processing as claimed in claim 1 is characterized in that, described chuck clamping comprises following technology accessory: chuck, screw thread lever pin, locking nut, back-up ring; The two ends of described screw thread lever pin are respectively thread segment and polished rod section, and the screwed hole of centre of thread segment and processed major axis matches, and chuck jaws blocks the polished end of screw thread pin rod; Back-up ring is between the axle head and locking nut of processed slender axles, and the back-up ring external diameter plays the escape effect less than the diameter of axle; Totally two of locking nuts oppositely screw each other and fix, and make back-up ring " stretching " axle, play the locking effect; Major axis stretching frock on the described tail stock frame comprises ring flange, bearing, top board; Ring flange connects by screw and lathe tailstock chuck, pointed cone outer circle diameter tight fit on the internal diameter of bearing and the lathe tailstock tailstock, the bearing chamber tight fit of the external diameter of bearing and ring flange is embedded in the bearing chamber of ring flange, and top board makes it to be in stationary state with the screw rigid bearing.
3. slim axle processing as claimed in claim 2 is characterized in that, may further comprise the steps: the two ends machining center screwed hole of processed slender axles; One end of axle is by the clamping of lathe spindle chuck, and the other end is by the tail stock frame chuck clamping that is fixed with major axis stretching frock; Ring flange connects by screw and lathe tailstock chuck, pointed cone outer circle diameter tight fit on the internal diameter of bearing and the lathe tailstock tailstock, the bearing chamber tight fit of the external diameter of bearing and ring flange is embedded in the bearing chamber of ring flange, and top board makes it to be in stationary state with the screw rigid bearing; The tailstock tail-holder rack of lathe is passed backward, and locking, makes an integral body be in the stretching state of level.
4. as the arbitrary described slim axle processing of claim 1 to 3, can be used for processing major axis thick, in, the Seiko preface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102473780A CN102078966A (en) | 2009-12-29 | 2009-12-29 | Machining process for slender axle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102473780A CN102078966A (en) | 2009-12-29 | 2009-12-29 | Machining process for slender axle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102078966A true CN102078966A (en) | 2011-06-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009102473780A Pending CN102078966A (en) | 2009-12-29 | 2009-12-29 | Machining process for slender axle |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102343517A (en) * | 2011-10-26 | 2012-02-08 | 上海海事大学 | Positioning device of tail frame base in special clamping process of superfine long shafts |
| 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 |
| CN102501087A (en) * | 2011-10-26 | 2012-06-20 | 上海海事大学 | Pin component used in special clamping process for ultra-slender shafts |
| CN102922314A (en) * | 2012-10-24 | 2013-02-13 | 大连德迈仕精密轴有限公司 | Fixture special for machining discs |
| CN103801954A (en) * | 2014-03-12 | 2014-05-21 | 无锡威孚马山油泵油嘴有限公司 | Fixture structure for machining herringbone groove in plunger part |
| CN110524066A (en) * | 2019-08-30 | 2019-12-03 | 中国航发动力股份有限公司 | A kind of axial workpiece screw thread clamps striking gear and its processing method |
| CN113478186A (en) * | 2021-08-26 | 2021-10-08 | 齐齐哈尔建华机械有限公司 | Machining method of slender threaded workpiece |
-
2009
- 2009-12-29 CN CN2009102473780A patent/CN102078966A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102343517A (en) * | 2011-10-26 | 2012-02-08 | 上海海事大学 | Positioning device of tail frame base in special clamping process of superfine long shafts |
| 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 |
| CN102501087A (en) * | 2011-10-26 | 2012-06-20 | 上海海事大学 | Pin component used in special clamping process for ultra-slender shafts |
| CN102922314A (en) * | 2012-10-24 | 2013-02-13 | 大连德迈仕精密轴有限公司 | Fixture special for machining discs |
| CN102922314B (en) * | 2012-10-24 | 2014-11-05 | 大连德迈仕精密轴有限公司 | Fixture special for machining discs |
| CN103801954A (en) * | 2014-03-12 | 2014-05-21 | 无锡威孚马山油泵油嘴有限公司 | Fixture structure for machining herringbone groove in plunger part |
| CN103801954B (en) * | 2014-03-12 | 2016-03-09 | 无锡威孚马山油泵油嘴有限公司 | A kind of clamp structure for the processing of plunger member chevron-notch |
| CN110524066A (en) * | 2019-08-30 | 2019-12-03 | 中国航发动力股份有限公司 | A kind of axial workpiece screw thread clamps striking gear and its processing method |
| CN113478186A (en) * | 2021-08-26 | 2021-10-08 | 齐齐哈尔建华机械有限公司 | Machining method of slender threaded workpiece |
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Application publication date: 20110601 |