CN108942090A - A kind of equidistant arc surface and processing unit (plant) - Google Patents
A kind of equidistant arc surface and processing unit (plant) Download PDFInfo
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- CN108942090A CN108942090A CN201810120695.5A CN201810120695A CN108942090A CN 108942090 A CN108942090 A CN 108942090A CN 201810120695 A CN201810120695 A CN 201810120695A CN 108942090 A CN108942090 A CN 108942090A
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- equidistant
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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Abstract
The invention discloses a kind of equidistant arc surface and processing unit (plant)s.The equidistant arc surface R center 0e designs the i.e. R > d except equidistant arc profile inscribed circle.Small arc-shaped r in the equidistant arc surface1Center 0, design on the center of equidistant great circle cambered surface 0, i.e., multiple small arc-shapeds are concentric circles, and the roundlet arc radius r in wheel bore2Greater than the roundlet arc radius r on equidistant arc surface axis1(r2> r1).The equidistant arc surface of high-precision (h5~h6) and best bright finish (Ra0.8~0.4 μm) can be gone out with rapid stock-removal with the processing unit (plant).
Description
Technical field
The present invention relates to Isometric-multilobe connection, specifically a kind of equidistant arc surface and processing unit (plant).
Background technique
" equidistant surface " is being equidistant between any two parallel tangents on type face.Equidistant profile is coupled due to structure letter
It is single, larger torsion evidence can be transmitted, early in 16th century clock and watch, printing etc. be miniature and small-sized machine in be applied.Due to system
Make complex process, machining accuracy is low, after replaced by flat key, spline.20th century the fifties U.S., Britain, Switzerland, Japan, Soviet Union
Lian Deng state scientist has made many researchs to Isometric-multilobe connection geometrical property, formation basic theory.Austrian engineer Ke Lawuzi
With the good geometry for successively proposing convex three sides cycloid contoured profiles of Moses, designs processing technology and produces special lathe,
Realize the keyless of equidistant three sides type face axis and hub.In the 60 to 70's, Moscow State University machine tool institute is to equidistant connection
Theoretical and manufacturing process has made numerous studies, the eighties, American researcher devise finishing equidistant profile device and
Isometric-multilobe connection Practical Method of Designing.
China's 20th century the seventies, the 6th machine tool plant of Beijing made research to equidistant profile, the eighties, mining industry of Jiaozuo
" the keyless research of equidistant profile in coal mine machinery transmission " and " mechanical keyless odd-shaped cross section axis processing have been made in institute's research
The development of lathe " etc. research.The nineties, Tsinghua University, Zhejiang university, University Of Ji'nan, Marine University Of Zhanjiang etc. and 2000
Afterwards, the Central China University of Science and Technology, Shenyang Univ. of Science and Engineering, Zhejiang university, Institutes Of Technology Of He'nan etc. have made numerous studies, test, and deliver
" equidistant profile error and numerical-control processing method ", " the equidistant conjunction plane surface rugosity research of turn-milling cutting ", " shaft with equal profile
Detection method " waits papers more than 20.In March, 2016 publishing house of the Central China University of Science and Technology publishes, and Du Xinyu and Du Taisheng write ---
" type face is keyless and manufactures " book, summarizes both at home and abroad to the history and status of equidistant profile research, test result.The world
Various countries expert, scholar have made numerous studies, test to " equidistant profile ", still use the process equipment of Gao Mao so far, extremely low
Processing efficiency, the equidistant profile dimensional accuracy processed is low, and surface is again very coarse.
There are serious error in " equidistant profile " design of foreigner's invention, the (see figure 1) by taking " three equidistant arc surfaces " as an example.
Three equidistant arc surfaces are respectively with 01、O2、O3Centered on, radius be R make three partial centers 0 equidistant great circle cambered surface AF, ED,
CB；Respectively with 01、O2、O3Centered on, radius r1Make small arc surface AB, CD, EF of three partial centers 0.
There are problems: shaft with equal profile couples with hub, supports, feels relieved, positions by three great circle cambered surfaces when work.If
Three small arc-shapeds also assist in bearing, centering, positioning, and result necessarily led to positioning, this is serious to violate " three points centering "
Principle.Axis, which couples cooperation lowest accuracy with hub, should reach (H7/h6) if processing three eccentric roundlet arc radius and the wheel on rear axle
Not equal (the r of three small arc-shapeds on hub1≠r2), then when axis couples with propeller boss, interference, three small arc-shapeds are generated at small arc-shaped position
As main bearing surface (such as Fig. 2).Necessarily make to increase (5 times~10 times or more) in the contact stress at small arc-shaped position in this way, contact
Stress is more than the material stress limit, makes the small arc-shaped surface on wheel bore or axis that will generate breakage, crackle etc., so that cause wheel hub
Or axis generates failure and causes accident.
If becoming main bearing surface at the top of three small arc-shapeds, so that three great circle cambered surfaces on axis and the arc surface gap in wheel hub
Increase, this must make the wheel hub in high-speed rotation generate vibration, shake heavy curtain, and complete machine generates unstability initiation accident when serious.
Bis- " equidistant profiles ", make processing difficulties.Great circle cambered surface and small arc surface became double eccentric equidistant arc surfaces, at one week
3600Inside be designed to the equidistant off-centre operation cambered surface of two kinds of sizes, can not clamped one time Continuous maching come out.It is difficult to process size
The arc-shaped surface of precision h6-h7 is more difficult to process Ra1.6-0.8 μm of smooth arc surface below.
In March, 2009, Shenyang Univ. of Science and Engineering process from Japanese import Mazak numerical control " milling-lathe machining center " lathe
" equidistant arc surface square shaft ", using the equidistant arc surface axis in five side of " Orthogonal Method " turnning and milling (aluminum alloy test part), with " orthogonal turn-milling method
" Machining Arc face is really come out with broken line envelope " more rib " arc surfaces；And equidistant arc radius (R or r) can not be online
Measurement, that is, not can guarantee the dimensional accuracy and type identity distance precision of equidistant arc radius.It can be seen that: the numerical control of domestic external application top grade
Milling-lathe machining center processing, can only process no required precision and shaggy " sample ", cannot be attached on mechanical equipment makes
With.
Summary of the invention
The equidistant arc surface R center 0e is designed except equidistant arc profile inscribed circle, i.e. R > d (see figure 3).
Small arc-shaped r in the equidistant arc surface1Center 0, design on the center of equidistant great circle cambered surface 0, i.e., it is multiple
Small arc-shaped is concentric circles, and the roundlet arc radius r in wheel bore2Greater than the roundlet arc radius r on equidistant arc surface axis1(r2>
r1).
Keyless " equidistant profile " with foreigner's design of the equidistant arc surface, which couples, following advantage:
The isometric circle cambered surface radius R be greater than inscribed circle d, contact area can be improved in this way, improve hub operation stability and
Anti-rotation performance.
The equidistant surface arc radius R center 0e design can use dedicated unit on general grinding machine in this way outside inscribed circle
It is easy to process the equidistant arc surface of high-precision and best bright finish.
Each concentric circle of small arc-shaped radial design can use center lathe Vehicle Processing, and the roundlet arc radius r on axis1
Less than the roundlet arc radius r on wheel hub2.Axis small arc surface corresponding with hub in this way does not contact, is non-interference, improves in this way
Cooperate precision away from arc surface axis and wheel bore, centering is good, stability is good when running at high speed, and meets with stresses uniformly, transmits torque
Greatly, axis and wheel hub intensity height, large carrying capacity, are concentrated without stress, are run at high speed safe and reliable.
Detailed description of the invention
Three equidistant profile parameters of Fig. 1 foreigner design；
Fig. 2 axis and wheel bore r1≠r2, interference is generated in small arc surface；
The equidistant arc profile structure of Fig. 3 and major parameter；
R-isometric circle cambered surface radius, e-eccentricity, r-small arc surface radius, h-type identity distance, d-inscribed circle, D-are external
Circle.
The small arc-shaped of the equidistant arc surface axis of Fig. 4 and wheel hub is non-mating surface r1< r2
Four isometric circle arc oscillating axis and sliding sleeve (balance staff and sliding sleeve part on Coin packaging machine on Fig. 5 labelling machine
Figure)；
Fig. 6 quartering eccentric fixture, with index dial is installed on shaft position, clamped one time can grind 2 equidistant arc surfaces
Axis；
The equidistant arc surface square shaft process schematic diagram of Fig. 7 tetra-.
Specific implementation method
Think that Shenyang coinage company processes for four isometric circle arc oscillating axis on a collection of " labelling machine " and sliding sleeve axis (see figure
5).
On lathe, by equidistant circular arc square shaft small arc-shaped outer circle vehicle at φ 18-030(radius r=9), by φ 14-0.027Che Cheng
φ 14.5, then with cylindrical grinder by φ 14-0.027It grinds.Part after will be rough turn be attached to fixture left end it is top on, right end φ
14-0.027In the centre bore φ 14K6 of " index dial ", and (see figure 6) is fixed with jackscrew.
Fixture is attached on lathe together with workpiece, the center hole on the conical sliding support " central axis " of both ends lathe,
Circular arc square shaft in this way is in eccentric position.Eccentric distance e=001=44-7.5=36.50.Folder is stirred with " driver chuck " on lathe chuck
Tool rotation, first by equidistant circular arc square shaft it is rough turn go out first arc surface vehicle at R44.4 (rough turn, to stay 0.4mm surplus), at the same time
Outer fenestra vehicle with axis is gone out into R44.4.First practical ruler of large circular arc radius R44.4 can be gone out with on-line measurement with slide calliper rule in this way
Very little (referring to-a(44.4+44.4=88.8 Fig. 7, roughing).
Index pin is extracted, index dial turns 900, index pin is inserted into the hole index dial 2#, it is rough turn go out the second face on R44.4.Together
Quadrat method rough turn third, the 4th arc surface R44.4 out.Two isometric circle arc sizes 7.9+7.9=15.80 can be measured with slide calliper rule
Part after will be rough turn is attached on cylindrical grinder together with " fixture ", refines R44-0.035 arc surface, can be quasi- with micrometer
Really measure round φ 88-0.070Actual size, can accurately grind R44 in this way-0.039.Index dial turns 900, refine out second
A arc surface R44-0.039, index dial turn 900, refine out third arc surface R44-0.039, first is accurately measured with micrometer
Isometric circle arc sizes 15-0.027.Index dial turns 900, the 4th arc surface is refined out, second isometric circle arc sizes is obtained
15-0.027。
With " eccentric equant fixture " on general-purpose grinder, it can be easy to and quickly grind four equidistant arc surfaces (1 is small
When), following precision can be obtained:
Isometric circle cambered surface radius R44 precision reaches h5~h6, and two equidistant arc surface center angle halving precisions reach 900±
Within 0.5 ', the equidistant deviation < 0.03mm of equidistant arc surface 15, equidistant circular arc surface roughness reaches Ra0.8~0.4 μm or less.
The equidistant arc surface is processable equidistant with best bright finish in high precision out with dedicated tooling on general-purpose grinder
Arc surface, high with wheel hub cooperation precision, the stability of high-speed rotation is high and high in machining efficiency, high-quality, and processing cost is extremely low.
" sliding sleeve " uses Numerical Control Wire Cutting (jog), and precision can achieve 15H8, and surface roughness reaches
Ra1.6μm.If equidistant arc surface such as stays 0.03-0.05mm surplus, with grinding method, dimensional accuracy can achieve 15H7, surface
Roughness can achieve Ra0.8 μm.
Being connect with equidistant arc surface replaces traditional spline and circular conical surface hydraulic keyless, and is made equidistant arc surface
Shaft coupling.It can be widely applied to aircraft (such as destroying -20, C919), naval vessel (such as aircraft carrier, nuclear submarine), tank, panzer, dress
Carrier aircraft, lathe, automobile, mine, metallurgy, chemical machinery etc., containing the connection for covering all component of machine.
Non- to limit the scope of the patents of the invention the foregoing is merely present pre-ferred embodiments, other use this hair
The equivalence changes of bright patent spirit, should all belong to the scope of the patents of the invention.
Claims (2)
1. isometric circle cambered surface radius R center Oe designs the i.e. R > d except equidistant arc profile inscribed circle.
2. the small arc-shaped r in equidistant arc surface1Center 0, design on the center O of equidistant great circle cambered surface, i.e., multiple small arc-shapeds are
Concentric circles.And the roundlet arc radius r in wheel bore2Greater than the roundlet arc radius r on equidistant arc surface axis1(r2> r1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810120695.5A CN108942090A (en) | 2018-02-07 | 2018-02-07 | A kind of equidistant arc surface and processing unit (plant) |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810120695.5A CN108942090A (en) | 2018-02-07 | 2018-02-07 | A kind of equidistant arc surface and processing unit (plant) |
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| CN108942090A true CN108942090A (en) | 2018-12-07 |
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| CN201810120695.5A Pending CN108942090A (en) | 2018-02-07 | 2018-02-07 | A kind of equidistant arc surface and processing unit (plant) |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112170864A (en) * | 2020-09-11 | 2021-01-05 | 沈阳理工大学 | Turning method for workpiece with equidistant molded surfaces |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU591822A1 (en) * | 1974-09-23 | 1978-02-05 | Предприятие П/Я А-3890 | Method of correction of equidistant in numerical program control device |
| CN88212949U (en) * | 1988-06-06 | 1988-12-28 | 成都飞机公司 | Indexing-positioning disc for combined clamp |
| CN101508041A (en) * | 2008-12-26 | 2009-08-19 | 山东上汽汽车变速器有限公司 | Pitch circle clamp use technique |
| CN201826776U (en) * | 2010-07-23 | 2011-05-11 | 湖南恒至凿岩科技有限公司 | Drill advancing mechanism in three-circular-arc equidistant profile connection |
| CN103410925A (en) * | 2013-08-21 | 2013-11-27 | 湖南恒至凿岩科技有限公司 | Polyhedral swing movable tooth transmission device |
-
2018
- 2018-02-07 CN CN201810120695.5A patent/CN108942090A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU591822A1 (en) * | 1974-09-23 | 1978-02-05 | Предприятие П/Я А-3890 | Method of correction of equidistant in numerical program control device |
| CN88212949U (en) * | 1988-06-06 | 1988-12-28 | 成都飞机公司 | Indexing-positioning disc for combined clamp |
| CN101508041A (en) * | 2008-12-26 | 2009-08-19 | 山东上汽汽车变速器有限公司 | Pitch circle clamp use technique |
| CN201826776U (en) * | 2010-07-23 | 2011-05-11 | 湖南恒至凿岩科技有限公司 | Drill advancing mechanism in three-circular-arc equidistant profile connection |
| CN103410925A (en) * | 2013-08-21 | 2013-11-27 | 湖南恒至凿岩科技有限公司 | Polyhedral swing movable tooth transmission device |
Non-Patent Citations (1)
| Title |
|---|
| 曹秋霞: ""等距型三弧孔的数控切削加工"", 《煤矿机电》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112170864A (en) * | 2020-09-11 | 2021-01-05 | 沈阳理工大学 | Turning method for workpiece with equidistant molded surfaces |
| CN112170864B (en) * | 2020-09-11 | 2021-10-29 | 沈阳理工大学 | Turning method for workpiece with equidistant molded surfaces |
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