DE1962878C3 - Assembly method for gyroscopes with preloaded roller bearings - Google Patents

Description

The invention relates to an assembly method for gyroscopes with roller bearings, in which by means of a clamping device for moving at least one clamping part of the gyro with respect to a receiving part with their centering surfaces between the rolling elements their inner and outer running surfaces are narrowed and the tensioning part on the receiving part by hardening an at least partially introduced between the said Zenirki'l'l'läehen plastic mass is attached.

From the German Auslegeschrift I 242002 is a Known gyroscope, whose rotor likes to be on a fixed rigid axle by means of two shoulder ball bearings is stored. When assembling, after the ball bearings are inserted, two set screws are one Jig screwed onto the ends of the stalor axles until they hit the outer end faces of the ball bearing inner rings that can be moved on this shaft issue. Now comes the actual preloading of the bearings, at least one of the two Turn the adjusting screws carefully until the gyro rotor runs smoothly. The between the two races of each ball bearing effective

However, ao force, which is important here, cannot be precisely set and cannot be measured directly. This force can only be measured indirectly and very uncertainly in the so-called run-out attempt, in which the gyro is allowed to run at a certain speed and the time between switching off the engine and standstill is measured. The tightening torque of the adjusting screw is also not a measure of the bearing preload, but at most the force exerted by the screw on the ball bearing inner ring. Due to the friction fit of the inner ring, however, this force n ^- ir can have an effect on the balls to a reduced and not precisely determinable degree.

The invention * is based on the object mentioned To avoid disadvantages and to specify an assembly method which allows the bearing preload can be set precisely and quickly to a value predetermined for the type of gyro in question.

This object is achieved in that the clamping part with one of the bias to be set correspondingly dimensioned force for the bearing against the receiving part on the one fitted into one another with a play fit Centering surfaces moved in the axial direction into an end position and in this during the Curing of the plastic mass is held.

The fit between the centering surfaces of the receiving part and the clamping part is a play fit designed so that on the one hand sufficient guidance and on the other hand sufficient ease of movement is guaranteed. If, for example, a shaft is used as the receiving part and a cylindrical sleeve is used as the clamping part

. provided, the centering surfaces are designed in particular as cylindrical outer or inner surfaces, the axes of said surfaces preferably coinciding with the axis of rotation of the rotor. The precisely measured external clamping force acting on the clamping part comes fully between the Ball bearing rings of each bearing to the effect. This elasticity is maintained until the hardening process the plastic mass has come to an end. From then on, the Spanntci! be relieved externally, because the tension is now absorbed by the attachment point and by parts of the top itself.

The new assembly process is particularly suitable for fast and precise series production of gyroscopes, because now tedious adjustment and testing is no longer necessary, and that too

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you can bring you »SpÄJ Äh ί," · ^W · "' """ ^{lini1 der} ' ^{/ x] ehmn} » ^{nlllwr grUlmcrl} · ^Is

! "errlSmSSmleiST · ^ Τ * ⁼ " ^ ' «™ '^" ni " ^ a top, nil

Ms ΐΐ iba-e i ^ S ^ M ^nniel ! ^{lbt: niili} ^ · ⁵ inner.aiur. de.sen Kuuelhmci-Innenriuue with ί (i) iV

one ? _B £ h «rIe, de 'KS, f ^ X," I ₁ ^ ₁ ^Llnie ^ "*!» - I «verspann. JmI: ~

Jüunriüssiu Ksi. that he inf, lee Ki ^ 'i ^{tk <r} , ^s °' ^H 8 · ^{2 cinen} '-ilnissselmiii through «inn Mikro

r »: is« iin »sspiili between ^, ^g '!'» effect the miniature turkish, whose rope bearing shell as

ü ϊαϊ JÄÄiiSn sX gs? r ^{niiiii ciiem unu mii} ^ ™ * ^ ^η * ^wmix

^ KntetmKwuSv? ¹¹ ^ ¹ '™ ^ «- ^I0 ""*'« * ^Fii! · ' ^Bes ^' ^dc >"*»"" ■ "« gyro from Den νSriw ηί f eiSn '"' i ¹ ^^ ¹¹ " ¹⁵⁰¹ ' ¹¹¹ ^ ¹¹ '' ¹ ^ stator axilla and the .SlaiorblcehpakeN. the

Äin kimmin Dn, 'emTodef? Τ' ^Π , ^{2llm SC} " ^{lidl from dcm BIcch} " ^akel '«"«" ^ "' IcM Wickelniuf) then from« cwccimnli «-> r · ^{ere L: lgt; r kli} P ^lL ' ^{are designated l! lil 5.} The connection lines Γ U.Τ ^ οΧ'κ ^ Γη? J ^{Seii! nCnsidlcia} - ^{I5 dc} ^ ^Wicklu »S ^werdci1 tiu'-ch a longitudinal beaninuJ» lr £ t Ι ί ^{Cl klll7ZL} · '"^ '· F-rliil- and through an inclined hole 2 , 1 "" wieir Sl'SwSl ΓΓη · ^{Γ dL> S Krei} - ^der ^ """-" chsc to the outside. The Rolor. be-ΐ ile vom ilien KläVr t ' Ψ ^{Φ Rcini} S ^u ° 8 ^dcr standing at.s the two ring bowls 12 and 13, the Ui set the net Lt ¹ ' ¹ "'· T ° ^U * ^{m after the swing ring} 14 and dem Hvslcrescring 15, is. mil-ά D sdte ^ Är fT ⁿ f ^{kleht Who} - ^{20 Iels zwder} ball bearings mounted on the rigid axle, h 's soft solder 7urR _P r ^ · ^S1Cl1 , ^ c ^Venue " ^du " e dit ball bearings have each one Jnnenriim 6 and \ .. fnahme7eir ^Betesl '' ^un 8 '''Spannleilcs on 9 and an outer ring? and 10. The two outer

fiei KriMspln L-Miv, .. · ί ι j. ^r ' ⁱⁿ l' ^e are firmly integrated in the ring shells 12 and 13

«. e «. .ί .f ^en ^ "" - T. be, which press in, while the inner rings opposite the S.ator-

• wiXur BcX rn ^, "\ T ^{hr ßClÜSt who} " ^{35! Ldlse with S} P ^idsi "!" Are matched, so that

-; * eTn des Αϊ. « ^{118 d} , ^er ^ ¹¹ · ' ¹ ^ ^{dils Ver} - ^ '""bring itself first klht on the Slutor-

· .; ^ SCi hoen Ιηϊ ϊ "ι, '"' ^{Allfnahmeleil} move the axis. Outside the sphere

I -k r. ™ ahl et η f ^{g Wl} [Γ ¹ - '""'" ⁿ 'with ^an I ^ r inside sizes6 and 9 are on the axis of L-

MiKlunu kS, P "nktfo, _m , ge Schweive, - the sides the actual span mile, namely Hiil-

n, - / ii./ii,-h ri. ι, · ■ ³ ° ^{sen8 and} "· ^{£ ll! l the} Siatorachse attached Both

Ji. Durchfiihrnn T ^LRU M ^{IVCn VorailSi> L} '^ ^u "^ n sleeves have two flanges 8a. At its' * r π ^Monla 8 ^evu rlahrens are .Jnrtrhl are angled in the outer end to the round back and VV Soèa ™ Τη"'. ur-i, ^{unlcrsdlL> idc} "* ° 1J which engages in an annular groove which surrounds the ball bearing outer rings .mc 7 κ 3! n% roller bearing inner rings one and 10.

\ 'i'.nr ι \' ^dU , \ "" Γ " ^Inside: « ^lo r "nc! One must be careful that particles, which arise from the abrasion of matter from the electric motor using modern balancing processes, graze in .nc-n, it is suggested that the clamping penetrate the bearings.

siatorLhse J ^ ^ ^ ^{SplcWlU uui dic Üas} assembly process verlauli as follows: ί αϊ ™ ί df S Γ "", '''' I ^SO _tJ ^di : ^{ß diU der Achs} " ^First, ^ H ^ l« -T «ering 15 in the flywheel ring Z π ΑΓ Ti ^1Sei f "·· f ^{r Hulsc on dcn innc} - ⁴ ° ^l4 Quoted, then one of the two annular shell ·." XrcHniwf ^ r ί 'ann "^ ^prints -..- ^Jierbe in""eg ^d 13. The stator is now preassembled for itself. Fa N Ie du ν, Τι '"i ^' ⁸ '"" ⁰ " ^! ^Άά10 ™ ¹ ™ ^! »J« Flywheel inserted and the other channels -fl _m ? IIIRS Λ ^S rf ^{ln can gegcbe} - .fgesetzt ^{Schalc 12} ^ After that, the ball bearings, I ™: ^{kb expectant, en} · t 'n acher it is aller- used and their outer rings and 10 while in the LaSrinTdnrtt.?. ι ■ "'ρ" /, ¹ '"" ^ " ^Wäzla g ^er " 45 ring shells pressed in. It is to be ensured that the ff Ä Lp h? ^trap ". ^ 'g""but the Sta.or through Longitudinal shift in the middle of the nVl / r ^W , ^a ' ^{/ lager bes} O "ders suitable material rotor is printed.

then ^ f SS ^ ffreS ^ - ΐ '^ ί; ^S ° ** ^{After fulgl "un bracing} of the ball bearings.

iernnL -nick! rZ ^g ™ ^ 1 ^Hu ' ^{SC U} " ^{d Initially! becomes dtr S} P ^old « ⁶ tables the inner ring

IV ^ TZym ^^ llL ^W \ \ """ι; Γ ⁰⁰ ' ^{the 50 gen6 and 9 and} the stator axis with a little, KIe-

dTlZSZZ ^ Ju - ^8l f ^IChe ", ^We [ ^k l ^{toff as} over moistened. The glue penetrates through Kapillarwii -

^ X ^ oii ^ ZtL · ' Τ' K ^Ch ^ ^{e ßlei} " ^kun - ^{completely in the S} (' ^{ait a} - ^D "^{nat; h} " ^c « «Ή« " ^{which can} achieve''"' ^ ' ^KlebU " ^{g sleeves 8 and Π on lind bri} "g ' ^s " a ^{lot of glue: r} to it.

fm ün ^ rp'n Παΐι c "ι ι xs ■ . ^{daR sicti dls} fassungsspaltc soak up. f) araufhin

The LaufSXn Ϊ ti, ^Kr Tä ^U , ^{nd In particular} 55 is the top with an axis, down to a dt La «ί dJS, ° i Γ ⁸ v ' ^da 1 ^dl u ^verse P ^annu " g P ^a ^ ende A base is placed which supports both the axis ren iSirrinJi R- ' ^a ί? F ^e ™ ^hlcblin g of ^{the outer} """ ^d a sleeve as well as the ring shell that comes ^{into being} on the same ropes in the center plane of the gyroscope. Jcfzt becomes the top

™: _r ^{ß a nem soI} ? ^e "top with weighted from an in-sleeve with a certain weight. Das? romoto , Z ? _e f- ^{TrT Außenro} _c ^to ₍ ^r existing elec- 60 weight remains until the outward process, which takes place under _R 7n3h 1 J ^ Λ "Acceleration ^a flywheel ring bearing circumstances by heat. einÄÄSV · i ^{Panntole. m to} ₁ ^Schwu" 8 ^ri "e may be, is terminated. After removal of the Ge pushed are proposed rd _W1 that the il.ng- wichtes remains the bearing preload receive

ί ^e bi.den ^Z IT ^eise ₍ f ·, ^äu «erc" rolling bearing barrel When using the same ^{rotor parts, can}

KJ h h -ι ^{P m den Sdlw} "ngring 65 the method better still in another variant

The FrfinH.m! , - ι _t,. perform, which consists in the fact that initially only one

bum two "ΐΚ ^{1 n dc} . ^r . ^nu " ^ Send description ball bearing inner ring and the associated sleeve exercise two exemplary embodiments of gyroscopes that are glued to the Siator axis. After hardening

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the glue is then only followed by the gluing to the other existing material and thus its own My-;

ren ropes, which causes the pre-tensioning, stcresering, as it was used in Fig. I,

The method according to the invention has z. B. with remaining. The shoulder 23 of the ball bearing barrel

a gyro shown as being very advantageous, the slat surfaces of which are reversed here compared to FIG.

door axis and its adapter sleeve is made of titanium. 5 d. H. the shoulders on the axis are inside and

The air gap between the sleeve and the stator - those on the ring shells are on the outside. On ⁱ

axis was 0.5 to 0.8 iim, and pretty much this way the bearings are preloaded when

Thin glue had the property of moving the two ring clasps against each other. ,

To harden air exclusion, with a heating on The Ringschalcn have cylindrical outer surfaces,

elwa 80 'accelerates the curing process. The to which smoothly with the formation of a gap 24

However, the chemical process of hardening is brought about in the corresponding cylindrical inner surface of the

can be moved just by introducing it into such a flywheel 22.

narrow gap, because air oxygen is no longer there. In this gap 24 and in the corresponding |

can kick. Gap between the ring shell 21 and the swing

Fig. 2 is an illustration on a scale of 10: I; the gyro shown according to the method according to the invention has a rotor outer diameter adhesive introduced. The gyro is then placed on a scr of 10 mm. With this so-called micro of the two ring shells, whereupon ach-miniature circle was on actual ball bearings that the stator axis is not supported.
Laufringc waived, these were rather with the Then the other ring shell is integrated with the axis and with the side ring shells. 20 predetermined weight loaded until the Aushärtcvor-Dic Statorachsc is with 17, the laminated core with 18, gear is ended. It goes without saying that here and the side winding heads are first an annular shell with no weight load. The ring scarfs have the designations 20 are glued and the other Klcbung under front and 21. They carry the swing ring 22, which follows from tension only after the first one has hardened.

1 sheet of drawings

Claims (7)

1 962 claims: 1. Assembly method for circles! with WsH / ίίΐ-like. that is, by means of a tensioning device, by axially displacing at least one spinning part of the gyro with respect to a receiving part on their Zciitrierfläehen the rolling elements between their inner and outer running surfaces and the tensioning c ¹ on the Aufiiiilimeteil by hardening of a plastic that is at least partially introduced between the Züiilrierflächen Mass is attached, because the tensioning part (8, 20) with a dci to be set preload for the bearing correspondingly dimensioned force relative to the receiving part (I, 22) on the centering surfaces in the axial direction with a clearance fit into one another an end position is moved and held in this during the hardening of the plastic mass. 2. Assembly method according to claim I, characterized in that for fastening the The tensioning line on the receiving part is a self-curing one glue is used, which is so thin. that, as a result of capillary action, it closes the gap (16, 24) between the centres / surfaces completely filled. 3. Assembly method according to claim I, characterized in that for fastening the A soft solder is used on the clamping line on the receiving part. 4. Assembly method according to claim I, characterized in that the connection between Clamping part and receiving part are carried out by welding these components together. 5. Device on a gyroscope with an inner stator and an outer rotor Electric motor for carrying out the assembly method according to claim i, characterized in that that the clamping part is designed as a sleeve (8, 11) and pushed onto the stator axis (1) with a play fit is, so that the end face of the sleeve facing the Achsraitte on an inner Rolling bearing race (6,9) presses. 6. Apparatus according to claim 5, characterized in that the sleeve is the inner roller bearing barrel ring forms. 7. Device on a gyroscope with an internal stator and an external rotor consisting of an electric motor and lateral ring shells carrying a flywheel, which are inserted as clamping parts into the flywheel, for carrying out the assembly method according to claim 1, characterized in that the ring shells (20, 21 ) preferably form the outer roller bearing races and are pushed into the flywheel (22) with a clearance fit.