DE1752199A1 - Gear grinding machine - Google Patents

Description

The invention relates to a machine for grinding relatively large gears, in which the gear to be machined is only rotatably mounted on the (jestell, while the grinding wheel is alternately moved back and forth in order to grind the teeth of the gear; the machine according to the invention comprises a cam arrangement, by means of which the gear wheel to be grinded can be rotated in order to compensate for the spiral or helical swirls, in order to grind the teeth into a crown if necessary, and in order to enable only one side or plank of a tooth to be ground at a time; the grinding wheel The supporting column or the stand of the lias cnine can be moved independently in the direction of one end of the crumbles, so that the grinding wheel can work with an unevenly bowed tool.

i / Uj.; <! tnm ! ϊ-.iulmt, iiioht IL ^ v) vi: indan «; oLivo IfagchLno zum Sehlaiftiti ro La ti /. , roß ^ r Zunnrädei '/ or, and duhot ¹ L «t ea ErwUnwcnt, ei.no arrangement - <iu vormoLdon, beL dor daa /« u üearboi ~

tende Z

in t; LiIi) L- zu ) i; iuar Aohoo purallolen ßiohtung

109829/0711

must be moved back and forth. On the other hand, the gear can be provided with helical or helical teeth, and It is therefore necessary to ensure that the grinding wheel, which is moved back and forth parallel to the axis of the gearwheel, corresponds to the helix or helix angle of the gear wheel can also be set. to provide a device which makes it possible to adjust the gear to be machined in accordance with the movement of the grinding wheel to take into account the helical or helical angle. Furthermore, it may be possible to do so ensure that the grinding wheel has an additional backward and forward rotational movement in time with the movement the grinding wheel executes so that the teeth of the gear can be ground spherically. Finally, it is desirable to ensure that the grinding wheel can make a small rotational movement in the forwards and backwards directions, so that the grinding wheel the two boundary ax faces one Can grind gap between two adjacent teeth "

The device by means of which the mentioned temporal coordinated rotation of the gear is brought about, comprises essentially a carriage assembly which is on the bed of the Machine can be moved parallel to the direction of movement of the column carrying the grinding wheel. However, it is desirable for this to borrow that grinding wheel to one end of the betto can be moved to be dressed} During this movement the Ochleifapindsl column needs the cam assembly not to be moved together with the grinding spindle column. In order to make this possible, separate movement or pre-lifting

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BAD ORiGiNAL

devices in the form of cylinder and piston units provided, and when one of these units is in operation, the cam arrangement is mechanically with the grinding spindle column coupled so that the flake arrangement takes part in the movement of the column.

It is an object of the invention to provide a machine for grinding relatively large gears including To create helical or helical gears and to provide a device that allows the teeth of a To grind the gear with the help of a simple operation, which is required to carry out the grinding process Movement is brought about by the fact that the grinding wheel is advanced or moved while the workpiece forming gear is only rotated

Another object of the invention is to provide a grinding machine of the type mentioned which has a cam or Includes sine ruler and crown grinding mechanism that is based on the Bed is displaceable, furthermore a device which, if necessary, enables the aforementioned assembly with which the grinding spindle To couple the supporting column, a first feed device, which also serves to both the grinding spindle column as well as the cam or sinusoidal linear device, Bowie a second feed device, which only the The task is to bring about a movement of the column carrying the grinding spindle.

The invention is explained in more detail below with reference to schematic drawings of an exemplary embodiment.

109828/0713

Pig. 1 is a partial perspective view of a Grinding machine according to the invention, in which certain parts are shown broken away.

Figure 2 is a fragmentary, enlarged perspective view of certain details of the workpiece support and the mechanism for rotating the workpiece.

According to the drawings, the grinding machine comprises a relatively large stationary bed 10, which with itself in the longitudinal direction

™ device extending guide rails 12 is provided according to the drawings can each be formed in one piece, which could, however, also be formed in two parts so that it is possible, the cam or Sinuslinealmechaniemus and the To move the grinding spindle column independently of each other. On the front part of the bed 10 is a workpiece support arranged, which is preferably adjustable in the longitudinal direction in guides not shown here and a rear one Tailstock 14 and a front tailstock 16 comprises, wherein

L · a known V / else trained, not shown here, indexing device is provided, and a device that would allow light, "a the v / orkpiece supporting shaft or spindle 18 to support so that they are in the group consisting of Mg. 1 apparent way extends between the two tailstocks.

A grinding spindle support or column 20 is arranged to move along the guides 12 of the bed 10 can be. On the front of the column 20, a bracket or bracket 22 is arranged, which is on the column with the help of a suitable device, for example the guide uninterpreted at 24

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_5_ 17B2 199

can be moved · On the underside of the holder 22 is a grinding wheel W, which is driven by a shaft with a Drive motor 28 is connected} the grinding wheel and the motor are guided in such a way that they are with them about a vertical axis Angularly adjustable with the aid of a device indicated at 30 sindo The angular distribution of the grinding wheel is made by a vertical axis running centrally through the grinding wheel, and this adjustability enables the grinding wheel Set W at the correct angle so that they form the workpiece with the helical or helical teeth of one- ™ the G- gear can work together.

It should be noted that when grinding the teeth of the gear G, the grinding spindle column 20 is moved in parallel with the guides 12; the device for producing this reciprocating movement comprises a feed device 32 comprising a cylinder and a piston and having a piston rod 34 which is coupled to a slide 36 by means of which the helix angle of the gear wheel is determined. The hereinafter referred to as oblique _etc.

The carriage 36, designated as a sliding axis, is in turn mechanically coupled to the grinding spindle column 20 by an autell 38, according to which Wig. 1 is provided with a threaded hole on its left side. The tsauteil 30 can be coupled with the grinding spindle 20 with a rod 40, which by means of a device 42 comprising a cylinder and a piston can be turned into a raw illustration; the professional BZV /, the VerbLndungsistUok where solder at its lower Kiide a recess, a tiLenoLnen kloLnereu Dui'oh-

uut-vüLnerrlen Ab.JciinLfct 41- \ oa üautelio .50 can accommodate. 10 9 8 2 8/0713

ρ _ti n ORIGINAL

The inclined slide 36 carries a rotatable shaft 46, which carries a threaded head 48 at its inner end, and a rod 50 is provided which has a carries a threaded head 52 and extends through the hollow shaft 46. The rod 50 is with the shaft 46 according to Fig. 1 connected at 54 by a mortise and tenon joint. The component 38 has a longitudinal groove into which a wedge 56 engages in order to prevent rotational movements of the component 38.

If the distance between the inclined slide 36 and the grinding spindle column 20 is to be changed, a locking nut 58 is loosened, whereupon a hand wheel 60 can be turned in order to bring about a relative longitudinal movement between the hollow shaft 46 and the component 38. When said parts have been placed in the desired position "is the lock nut tightened 58 again, whereby the threaded head 52 of the rod 50 is pulled against the threaded head 48 of the hollow shaft 46 to a frictional engagement compared to the threaded W addressed in the interior of the component 38 to bring about

When it is necessary to dress the grinding wheel W, it includes a cylinder and a piston Device 42 actuated to move the component 40 upwards and so the sole grinding spindle column 20 from the inclined shaft 36 uncouple. Furthermore, another is a cylinder and a A device comprising pistons is provided, the piston rod 64 of which is fastened to the grinding spindle column 20. The device 62 makes it possible to move the grinding spindle column along a considerable distance, so that the grinding wheel W In a

BATH ORIGINAL

109828/0719

Position can be burned in which it is directly above a dressing device designated as a whole with 66, which carries a movable dressing tool or a diamond 68. The device 66 for dressing the grinding wheel is vertically movable, together with a platform 70, which in a vertical direction with the help of a suitable Means can be moved, which includes, for example, a lead screw and a handwheel 72 not shown here. During operation the Mascnine and when the grinding wheel has to be dressed, the grinding spindle column 20 is in liichtung on the Diamonds 68 moved, and the grinding wheel is adjusted so far down that the grinding wheel in the desired Way is dressed or peeled off. After dressing, the grinding wheel is returned to its operating position. Since the dressing tool 6ü cooperates with the lower part of the grinding wheel W, the relationship between the The dressed grinding wheel and the gear G are not disturbed by the dressing process.

So that the gear to be machined G is in the correct j Way that can be rotated is the one in Ji'ig. 2 construction shown intended. The spindle 18 carrying the workpiece or an extension of this spindle can perform index movements, which are brought about by a suitable indexing device; the index device is on the front piece 16 arranged, and the required, timed backward and forward rotation of the gear U is through a Rack 74 brought about, which cooperates with a pinion 75, that rotates with the shaft or spindle 18

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is
is. The rack 74 / movable together with a cross slide 76, and it can be moved with respect to this slide, since it cooperates in the manner indicated at 7ü with the protrusions provided in the cross slide. The relative movement between the rack 74 and the cross slide 76 is brought about by a pin 80 which is connected to a movement pick-up part 88, which in turn can be moved in an angled slot 84 which is formed in a block 86 which is transverse to the Longitudinal axis of the

) Carriage 76 can be moved. The block 86 is connected to a small device 88 comprising a cylinder and a piston, and the extent of the possible movement of the rack 74 relative to the carriage Ib is determined by an adjustable stop nut 90 which is arranged on a screw 92 connected to the rack 74 . When the device 88 is actuated in a certain direction, sudden movement of the rack 74 causes the gear G to be rotated a small amount, one flank of one

ν tooth or a wall of a tooth gap in contact with the Grinding wheel is brought. When the other one joins Tooth gap is to be ground, the device 88 is in operated in the opposite direction.

So that the gear 6 can be rotated at the correct timing while the grinding wheel is moved back and forth parallel to the axis of the gear, a sine ruler 94 is provided which has a slot 96 in which a slide 98 is guided. The slide 98 carries a pin 10O ₉

108828/0713 original

which engages in a cylindrical opening of the cross slide 76. The sine ruler 94 is mounted in such a way that it can move angularly can perform about a vertical axis which coincides with the axis of the pin 100; for this purpose is an adjustable one Plate 102 is provided which can be brought into the desired angular position and fixed in a suitable ϊ / iron, e.g. with the help of nuts 104 »which work together with T-bolts 106, which can be moved in a circular T-slot of a slide 108 for spherical grinding.

When the device 32 comprising a cylinder and a piston is actuated in the construction now described, the carriages 56 and 108 as well as the sine ruler 94 are moved parallel to the axis of the workpiece spindle 18 and the sine ruler 94 is moved so that the slide 9o moved along the slot 96 so that the cross slide 76 executes a corresponding movement in the transverse direction, the rack 74 connected to a cross slide 76 then causes the pinion 75 to be rotated in order to rotate the workpiece spindle 18 and the gear G accordingly. U

In the operating mode described above, gear fences are generated that do not have a crowned Β ¹ or in. However, in the customary manufacture of Zunnwheels it is normally necessary to give the cocksole-fire gearwheels spherical profiles. The convex profile results from the fact that the Pi ¹ QtIl einoa oahnradzah.no is modified in the longitudinal direction by one find .sum other in a uniform manner, so that one obtains teeth that are in the middle between their ends

109828/0713

have the greatest thickness, and their thickness increases in direction the ends of the teeth diminished too much

So that it is possible with the aid of the gear grinding machine according to the invention to grind gear teeth in a crowned manner a cam 110 is provided which is positioned between cam rollers 112 and 114 is rotatably mounted; the cam rollers are mounted on axles 116 which are built into the carriage 108 for spherical grinding are. The cam 110 is non-rotatably connected to a shaft 118 which is built into a crank arm 120} the crank arm 120 carries a motion take-off roller 122, which can be moved in a slot 124 of a further sinusoidal ruler 126 for spherical grinding is. The sinus line 126 is on a circular plate 128 arranged, which is adjustable in angle about a vertical axis which coincides with the axis of the shaft 118} the plate 128 can be fixed in the manner indicated at 130 with the aid of T-slot bolts and nuts.

The cam 110 for spherical grinding is shaped so that its transverse dimension, which runs through the axis of the shaft 118, is uniform, with the result that when the crank arm 120 is moved to rotate the cam 110, the movement take-off members 112 and 114 are always fixed to the cam 110 issue·

It should be noted that any rotational movement of the cam 110 a (fine movement of the carriage 10a for spherical grinding with respect to the carriage 36 causes, and that this movement causes the Sohrägeaainuslineal 94 perpendicular to the Axis of the workpiece spindle 18 is moved.

109828/0713 'bad original

It should also be noted that it is only borrowed to grind one tooth flank in a crowned manner, because the movement used for crowning grinding, which is superimposed on the slope or slope compensation movement, and by means of which produces the desired crowning of a flank of a tooth, not a similar crowning of the opposite lying tooth flank would lead. For crown grinding, the stop nut that is used to limit the movement is therefore used 90 and the cylinder and piston device 88 to effect adjustment after the grinding wheel has a or has carried out several passes.

Bs can be seen that the gear to be machined G can be stored between the two tailstocks, and that it is possible through a suitable adjustment of the handwheel 60 that Set the gear to be machined so that the material to be removed is set exactly on the grinding wheel W.

It should also be noted that a simplified device is provided which enables the grinding wheel to be dressed at short intervals in the required manner without the need to change the setting of the other parts of the machine and without the need to advance the grinding wheel to be set precisely after dressing. Since the gear to be machined is stored between two heavy .Reitstocks ^ st, it is possible to support heavy or large gearwheels in a very simple way without the machine being exposed to the stresses that would occur if the gearwheel were also used tu its rotary movement would also have to perform a feed or longitudinal movement.

109828/0713

The drawings and the description above give such a complete, clear and accurate picture of the invention Gear grinding machine that it is hereafter every professional is possible to put the invention into practice.

109121/0713

Claims (1)

Fatantaneprfl oh a 1. Zannradeohlelfeaeohln ·, dadurah gek β η η -salehnac, da ·· daa Verkitilek (O) axially unaraahiabbar on minw wirable workpiece spindle (18) sitit and dia Sehlalfeettaloa (W) to a "In Utogsrlohfcunc the Werket" loc "pin del down «And harbawagbareji Sohlelf« ohelb «titräger (20) arranged and dl · ··» opposite, among other things, a door Aehe · dar werketaokeplndel cankraoht · Aehea (Ach «· da · Drahtaller« 30) corresponding to daa Sehrauben- or 3ohr & gung «wlnk« l The angle is distributed through the processing and the dar SohlelfeaheibentragAr ribar ala Qatrlab ’(36, 3 V ** 76, 9 ** 100) connected to the Werket-Heekeplndel, because there is an old going back and forth Movement da · Sehlalfsohalbentrttger · «eltiloh abgaetlaata back and forth · Rotation of the Warkattflakeplndal hartarruf« · 2 «Zahnradeohlelfnaeohine naoh Aaepruoh 1, thereby g · -kinaiilohnit ι da ·· da · Oatrlaba aln talUlnaal (V4) uaf» * et, da «on a« with d «a Sohlelfeohelbentriger (20) su gaaalnsaaar back and forth movement there * Ha- • Ghinetjbett ·· (10) yerbundenen bed "ohlltten (36) la angle lii •" k "hBar angaordnat and let alna KHhrung F \ r a dta old drive (/ 4, 73) of the W * RKit (lokfpin" iel (U) f «rbundenen Uieiletein (96) adar like image ·« · 109828/0713 βλι: original 3 · ZehBradaahlelfmaaehtna BMn Anapntah 2, dadurah g akiniiilohiit, Hn dia connection mlaehe »d« a Oleltatela (ft) and MF VarmattakapUdal (It) HMfNr sur B «« «eun« »rl« htt «nt «ms Bcttaehllttftans · ZahMtanga (7 *) MfMM ₉ 41a «it · Ι» Μ Mf der WerketOokaplAdel illmdii Mtael (75) **. ZatmradaohltlfMMhlM · BMk AnaprMh t or 3 »thereby gikiiBiililiiti, 4aae« 1% 4M Qalrtaaa (36, 38, 7 * · 74 »t *» UX » mm B ^ muim furthermore in the hargah 4M Drahun« 4a »Varbatnokapladal. (18 ) ate aoaatacatrlab · (lOd-120) vartaMl «! Ut ₉ daa dar Werkattakapittdel M fcr- hargabandam BaMagua «4m Sehlalfaahalkaatrtcara (to) alaa luattliliaha kl »» wm hamtii4a nmwau artailt. 5 2Uuuna4atflla & fMjMlitBa saaii ABaaawah% ■ 4aftirah κ kaniiialeliMat · 4M · 4M Ataatacatrlato (lOt-120) alMR Mf 4m Baataahii% t «i (34) ν * · * μ wmgMritMmm » to4 ) fflr 4m Lai% li »aal (· *) did UB4 μ 4M alM m BattaahilttM talagarta Maatawaahatba (110), dia In AbatlBMiig ait 4ar BattaaMLIttMaadrahbar 1st BAO ORIGINAL 109828/0713 / Γ 6 * Zalmradsohlelf * asehln «according to claim 5 · äadurah g · -kennitiehnit that both sides of the Nookensehel ~ be (110) Jewells · 1η · «a Quersehlltten (108) supported Nekkenfolder (112, 11 **) sngrelft and dl · Sum · dw balden Radii of the cam disk, dl · a point of contact «it "Lnwr No" k "ifolp:" roll · "thai *", constant Ut. 7 · Zahnradsehlelfteesehlne «ash elxea dar speech 1 bis 6 »by the fact that Ala stüokspindel (18) sus & tslioh «u your hl · -« ad Rotation can be rotated in such a way on both sides of a Zshnlüeke opposite the workpiece (0) welfare catfish are slipped 8. ZahnradsehlelfsAsehlne naah Aaspruah 3 «A4 7 , dadmreh gekenaselehnet, "aas dia Sshaatsaffs (7 ^) Hhp \ dia sahrlttwelse Drehws" Ur WarkeWaksptaeal (ti) U lh * «r, ^ LängTlefitttoc swlsahan AasahlIgen (9O ₉ 9t) Utaf ·« i »« r Rill · \ rung, 78) Tersehleeea * U%, en dar dar Olaltstalii (9 ·) Lattllneals (94) «alagsrt Ut« aa sdt Ur «la Ober eine« el <«MB Aatriaä { It-M) m» «sjH« m tat · 9 · 2ahnradseiaeifB «a« hl »e« a «tt Anapraah 1 as ·» e * ettraa C «kennseieii« at _t em Ala Va «% la« «« f Ua Sehlelfaahelaeatr & fera (10) «1% da« Be «% a «* Uit« * lSear Ut «ad« a «Im« μ le% tsatill »t« i «« greifι 109828/0713 DAD OBiGINAL Drive (32, 3 * 0 PIr al «UtagabawefnBig an unalterable« η Srhlelfechelbentröger attacking drive (6 ?, 64) pre- • ehan lit, old the «loh the Schielfaeheibantr & ßar without the Bettaahlltten should proceed in "in" position, in which "in · "In the" inen! 2nd "de · machine bed · (10) provided Abrlohtvorrlehtung (68-72)« n which the soleplate fairy · (W) attacks. 10 · Zahjuradsohlelfieaohlne after Aneprueh 9, thereby t, «-kennselohnet, that ·· the Detteohllttan (36) on the ron the Abriehtvorriahtung (68-72) aadte string daa Sehlalfeoheibentriigar · (20) is arranged, 11. Zahnradeehleifaaaehine naoh Anepruah 9 or 10, dadurdh gakanntaiahnat, daa · dia IAage daa dm Bettaahlitten (36) alt daa Sehlelfaoheibentra ^ ar (20) ▼ arblndandan Kupplmgaeüiadaa (38) elnatellbar lat. BATH ORIGINAL 109828/0713 Blank page