DE1909637C3 - Camber adjustment device - Google Patents

Description

6. Stur / cinstell device according to the claims 1 to 4, characterized in that the The actuator of the adjusting sleeve (16) is dependent on the displacement drive of the support sleeve (3) and has a limit switch cam control (68), the switching cams (74, 75) of which are opposite Displacement directions have and proportionally to the flow sleeve versJ'iiebunc displaceable and are arranged such that the larger support sleeve projection is a smaller one and the smaller one Support sleeve projection is assigned a greater travel distance compared to the associated limit switch.

7. camber adjustment device according to claim 6, characterized in that a first limit switch (70) and its cam (74) for the positive camber, a second limit switch (71) and its switching cam (75) for the negative camber and a third limit switch (72) and its There are switching cams ((73) for zero camber.

8. Sturzeinslell device according to claims 6 and 7, characterized in that a limit switch carrier (69) is fixedly arranged on an adjusting rack (56) and the two limit switches (70, 71) for the positive and negative camber and the switching cam (73 ) for zero camber, and that the two other switching cams (74, 75) are arranged and adjustable on mutually movable racks (76, 77) with a common pinion (79), the drive of which is derived from the feed shaft (86) for shifting the support sleeve , while the limit switch (72) for the zero camber is arranged in a stationary manner.

9. camber adjustment device according to claim 8, characterized in that the transmission the adjusting movement on the adjusting sleeve (16) takes place by means of a worm drive whose worm (44) on an adjusting shaft (45) in the clamping unit (9) acting in the vertical plane in a is mounted transversely to the support sleeve (3) arranged quill (48), and that the quill has a breakthrough (66 he) for the adjusting rack arranged transversely to it (56) which meshes with a spur toothing (46) of the actuating shaft (45) stands.

10. camber adjustment device according to the claims i to 9, characterized in that 'the cylinder (26) and the quill (48) of the vertical Clamping unit (9) acting on a plane in a receiving bore (27. 49) of the headstock housing (2) are axially displaceable and by means of a headstock housing equal or threaded spindle (31, 54) mounted on parallel axes and axially displaceable by means of additional weights calibrated scale (32) are adjustable.

11. camber adjustment device according to claim 1 or the following, which is used exclusively for camber adjustment, characterized in that in place of the spiral-shaped shaft (111) one with straight grooves (14 α) is present in the vertical plane of action.

Lintel devices are known. At the Face milling cutters with milling cutters and cutter heads, which snap on the face. one gives the axis of that Tool-receiving milling sleeve or milling spindle. or their support sleeve in the feed direction slight inclination, the. so-called "fall", through that the tool slightly differs from the face milling on the side opposite to the feed direction Workpiece is lifted off so that the retracting cutter teeth are free from the workpiece. So far one has

To be able to adjust the effective plane or also in an oblique direction, the invention provides that ^ ci Spannaaeregate are arranged offset by 90 ° above and to the side of the support sleeve and that each clamping 5 a.eregat by turning its adjusting sleeve in both Dr "directional tensile and compressive forces exerted on the support sleeve, creating a positive and negative The camber can be adjusted by means of opposite adjusting movements. From these two clamping units 10, the flute acting in the horizontal plane can only be used to adjust the camber _ 'Horizontal boring and milling machines and therefore has straight grooves ^ ,: the pre-drilling spindle guided concentrically in the milling sleeve. gang in every ^ aghulsensiellung, ^ n Their most precise zero position is of great importance. The waves of the two Spannaggrejaie ^ for the accuracy of the work carried out with her 15 part of the ir

this release by tilting either the headstock or the support sleeve guided in it or quill tries to achieve and has for this purpose an adjustment of the guide elements of the same performed. The device for this is relatively complicated. It is also disadvantageous that when lifting the fall position as a result of the required return of the guide elements Repeatability of the zero position of the milling spindle with the

for the accuracy of the i g

operations. The same applies to a number of finishing and milling jobs as well as for drilling operations with the milling

mn this fixed

t one a ^ n the

p waves in

both directions ^^ ^ _n . By ^ £ _o JJ _n J ^ SKfs ^ naggregate to the

Q'- ^{se Ληο} ""'= ^ _{pr Tl} - _{n (J} hü! Se on so that de to the extreme ends of the support sleeve on ^

t as the forces associated with the pulling force _{Kkinsl value}

5 Bracket of the

at the frag-holding

■ The accuracy of this work is the grain outer face

compensation of the different sag of the "plate fest eir.j; Support sleeve in its various axial positions is just as important as the setting of the camber for corresponding milling operations.

The invention is based on the object of a

Device for setting the camber on the scale - 25 effect too

right-boring and milling machines in which the compressive forces that _

Support sleeve not, as was previously the case, by means of tilting deflection compensation

movement, but by means of a targeted bending " ^A " ⁱ " ^rl " ^I " ^{rHpn lnnn}

The support sleeve can be adjusted to lintel.

The solution of this object consists of invention 30 hülscnstirnseite screw according to the use of a deflection, plate avoids any ¹ ^ compensation means for supporting extensible sleeve cross section and __. ,,. "Sleeves with built-in work spindle on horizontal The also used in boring and milling machines, through which the deflection directions acting disk spring packages correspond to the support sleeve due to its own weight as well as on the additional units that can be clamped in both directions are compensated and the forces. With the disc spring assemblies, the adjustment compensation is increased by means of screw action by means of tensioning paths, and higher precision elements are achieved, and in the case of an de, dber or
Underside of the support sleeve a clamping element between
a known V guide piece which is firmly connected to the support sleeve and which can be tensioned by a screwing mechanism, which can be actuated via a spiral-grooved shaft parallel to the orderly support sleeve , pistons in three axial directions that run in a stationary 45 and a central position, the drive sleeve during the displacement of the support sleeve, for camber adjustment the support pistons are preferably sleeves, the drive sleeve for actuating the toothed pistons have grooved rotatable shafts of one or more tensioning travel .

Units for camber adjustment can be rotated and adjusted. According to another embodiment, the

is stored and designed as an adjusting sleeve. whose 50 actuator drives the adjusting bushing from the

Rotation angle position the lintel size ty.ft. whereby the support sleeve drove dependent and

According to one embodiment, the adjusting bushes in be-.u the support sleeve is at two stops at two end positions. This tooth- [ applied, here a constant

g g

the clamping unit, which is used exclusively for camber adjustment, has a shaft with straight grooves

treb g ^ gg

en ^ ge "g" last ^
bb dd

Se

Deflection compensation device is slidable and arranged in such a way that large-

d äl Ptt (patent application P rcn Traghulsenausführung a finer u..d derK

Counterstana of the earlier patent (patent application P! 6 52 664.0-14).

This makes it possible to adjust the camber of the support sleeve according to the principle of the deflection compensation device to be carried out with essential parts of the same, so that the otherwise necessary Facilities for camber adjustment are dispensable. This becomes the overall device for the compensation device as well as for the lintel setting device in the vertical plane of action simplified.

Around the fall not only in the vertical plane of action, but also across it in the horizontal plane

rcn support sleeve projection a smaller and Neren Traghülsenauslaüung assigned a larger travel compared to the associated limit switch is. This makes it possible that the set ^ t 11 n: \ vinkel practically in every trap sleeve position from is the same size.

According to a preferred embodiment of this second Ausfülmingsfonri are a first limit switch and its switch cam for the positive camber, a second limit switch and its switch cam for the negative camber and a third limit switch and its switching cam for the zero camber available. the Size of the necessary for the short setting

Clamping forces are controlled by the limit switch pitch control controlled.

In a further embodiment of the invention, a limit switch carrier can be arranged fixedly on an adjusting rack and the two limit switches for the positive and negative camber as well as the switching cam for carry the zero camber, the other two switching cams ar> mutually movable racks with a common pinion angeurdnet and adjustable, the drive of which is derived from the feed shaft for shifting the support sleeve, while the limit switch for zero camber is fixed in place. Through a possible additional adjustability the switching cams arranged on the racks can have any camber angle for a positive and a negative fall can be set.

In this embodiment, the actuator can be operated hydraulically or by an electric motor will. The transfer of the Stel'Niwegune to the The adjusting bush is made by means of a worm gear. its worm on a shaft in the vertical one Clamping unit acting on a plane is mounted in a quill arranged transversely to the support sleeve, whereby this quill has a breakthrough for the transverse to it arranged? Has adjusting rack that with a spur toothing of the StellwelJe ir. tooth grip sees.

In the first-mentioned embodiment, the actuating cylinder and in the second embodiment the pin's of the chip aggregates acting in a vertical plane in both cases in one The receiving bore of the headstock housing is axially displaceable and by means of one in the spindle lock housing Coaxial or parallel axis mounted threaded spindle axially displaceable and by a be adjustable to the calibrated scale on additional weights. These measures allow it. Correction values for Entering deflection compensation in the device if additional units are attached to the support sleeve will. These correction values are calibrated by hand using the additional weights Scale adjusted by adjusting the cylinder or the quill according to the adjusted correction value is shifted axially. This option is only provided in the vertical plane of action, as only in this a deflection compensation is made.

However, if the device is only used to adjust the camber, it is instead of the spiral grooved Clamping element such with straight grooves also available in the vertical plane of action.

The subject matter of the invention is described on the basis of several exemplary embodiments. In the drawings show:

Fig. 1 is a side view of the headstock of a horizontal boring and milling machine with extended Support sleeve,

F i g. 2 shows an axial section through the upper tensioning unit of the device according to the invention Fig- I,

F i g. 3 shows a cross section through the support sleeve with an upper and a side adjusting device for the camber setting with constant travel according to the line-lIIderFig. 1,

4 shows a cross section through the upper adjusting device with a regulated travel of a further execution form and

Fig. 5 a section along the line V-V of 4, with the support sleeve retracted and the setting device in the middle position for camber "0".

The invention is explained using a horizontal boring and milling machine, without referring to this machine tool to be limited. It is also applicable to milling machines in which the Work spindle is set to "camber".

ίο The F i g. 1 is used for a general overview and for Explanation of the positive and negative camber that can be set with the means according to the invention.

In Fig. 1, 1 is the vertical machine column 2 the arranged on stand 1 headstock with the retractable and extendable support sleeve 3. d ^p r in their mounted Fräshülsc 4 and in this mounted drilling spindle S. In place of the Frashülse, a milling spindle step if a drilling spindle is not provided. The milling sleeve or milling spindle carries the tool 6, which is shown in dash-dotted lines as a cutter head. A camber angle, for example set with respect to the surface 7 of a workpiece to be machined, is calculated with α. It corresponds to a positive camber in the vertical feed direction, with the retracting upper milling teeth lifting slightly from the workpiece surface. The deflection lines of the axis of the support sleeve for the set positive or negative camber are denoted by 8 a and 9 h. The positive camber is achieved by exerting tensile stress and the negative camber by exerting compressive stress by means of clamping units arranged eccentrically to the support sleeve. In FIG. 1, two such clamping units are provided, of which the upper clamping unit arranged in the vertical working plane is generally designated by 9 and another clamping unit arranged in the horizontal working plane is generally designated by 10. These two clamping units come into effect individually or together, depending on whether the lintel is to be divided into a vertical or horizontal plane or in an inclined plane depending on the respective feed direction of the tool. Frame milling can be referred to as a machining example for changing feed directions.

Details of the tensioning units and their actuator for setting the camber are the embodiments according to FIGS. 2 to 5 can be found. The in Fig. The upper clamping unit 9 shown in FIG. 2 consists of the rear grooved shaft 11 and the front non-rotatable clamping element 12, both of which are connected to one another by a roller screw drive 13. The rotatable shaft is helically grooved with a large pitch. There are two spiral grooves 14 which are opposite one another. In Diesi spiral grooves in each case two drive rollers IS Einei access control sleeve 1 6 which is mounted rotatably and adjustable in the headstock 2 by means of a bearing 17 dei. The angle of rotation of the adjusting sleeve determines the camber size in the respective feed direction. The Welli II is mounted axially un displaceably at the inner end of the support sleeve 3 in a bearing block 18 fixedly connected to this. It is supported by disk spring assemblies 19 acting in both directions. De bearing block 18 is located at the rear end of the clamping unit, the front end of which is fastened in a spectacle-shaped holding plate 20 screwed to the support sleeve end. For fastening

the threaded pin 21 serves on the front end of the non-rotatable snann element 12. _t U is supported by a stud 22 connected to the support sleeve 3 and secured against rotation by an inserted 1 aWcda -J ^.

^g The Spamuiregat 9 can by turning u adjusting sleeve 16 in one or the other,., D- ^ tune tensile and compressive forces on di, '^' ^^ exercise. According to the Duahbimmgshmen 8., Nd 8 and Fi e 1 is thus de. Stellbuchsc a positive or em ne ^ mc camber adjustable. The clamping unit,, is protected by a cover 24. ,

The spiral grooves 14 on the rotatable shaft 11 are for the compensation of the deflection ck I ag-> ■> sleeve, which is intended for the H ^ ptpatenl. . ttds the rotatable and adjustable bushing from ^ de deflection compensation mn de, Mu./α. position

in de, vertical plane of action ™ \ ^c " ^K ₍ ^m . ™ ^U " ^ Z ~ - «, ge .; Autwand combine. If the Du. bu. gun compensation in a special case u / d, M so ,, halt the upper tensioning unit 9 at S die L sp ;:, fluted shaft such a mi ger, da, Nuta. the Indians Fi "->---'- 1, cm.ioze.chna and mt

This 5 is used exclusively for the fall of the tension register 10, which indicates that the adjustment process in each support sleeve is possible. ... · _,. _ln

<n der Fie 3 is an execution in the unu h ^ Jl "hen adjusting device for the Siel socket 16 of the two clamping units 9 and 10 are shown

The Mell socket 16 has on * ™ ^m } \ ^u *. ^ ™ _n fan.es a toothing Ua with axially g ^ .ehrten.:;, Hnen. These are in engagement with the number 25 ”of a piston 25 because of the sun.r W / an

" _Lls " 7, hnkolben "denotes is. This bennaci

S ^ t / η of the support sleeve 3 angeom- ^ Zvlinder26 and 26 "The cylinder 26 is ^ ^ which acts in a vertical plane Spannaggr.gat train 9 arranged and in a receiving bore 27 bpm -des dCtockgehäuses 2 axially verschicbb g ag rt A _ The cylinder has a thread "rs", hen. piece 28 by means of screws 29 bc: it igt desse ^

threaded hole 30 arranged coaxially ^ St un Threaded spindle 31 receives and through ^ dje c

is different. The 9 ^ ^η ^ ί £ de nS is provided with a scale J ^, "'handle 33 calibrated to additional weights.

can with the appropriate ^Au ^ '""""; f _o : _{uä use} '"elaeert 28 parallel axis in the headstock housing ge _

_{A s} .

We have ₂ en its Verstel.barkeit, st cylinder

also as "adjusting cylinder" ^be , ^zeic 5 _i ⁿ ^ ·

The cylinder 26 α for the! J ^ acting clamping unit 10 is

are. The two Hubraume in ^Stel '^' ⁱⁿ _Hubräum e 37 and 38, respectively. On each of these hu there are two flexible connections, ^ and 41. 42, which are marked with a not shown ^ _

valve are in communication, which ever nacn development by the aforementioned affiliates Pressure oil feeds and discharges, such that the toothed piston in three axial positions, two Endiellungen and one Middle position, are switchable.

In the center position of the shown in FIG / Ahnkolbens 25 are both stop pistons 35 and 36 through the connecting lines 39 and 42 with pressure oil acted upon while the lines 40 and 41 are switched to drain. The same applies to the two end positions. The sduiitbarcii Stdlweue of the toothed piston 25 are constant. The attitude of the positive and negative fall is therefore at this execution i'orni regardless of the respective Extension of the support sleeve.

By shifting the setting number 26 on the basis of the scale 32, correction values for compensation can be made Enter into the facility if heavy additional units are attached to the support sleeve WCl (ItMl.

4 and 5, a further embodiment of the invention is shown in which the upper Adjusting device of the tensioning unit acting in the vertical plane with a regulated travel in Depending on the Yerschie driving the Trac, sleeve works. This Slurzeinstelleinrichtung is then to be provided if the The camber angle should be of exactly the same size in every support sleeve position.

According to this second Ausführungsfotm is the The toothing of the adjusting sleeve 16 is designed as a worm wheel 43. The worm wheel stands with a Screw 44 in unity, the file of an adjusting shaft 45 is. The actuating shaft has a spur toothing 46 and is axially immovable in bearings 47 in a quill 48 stored. For this purpose, the quill is arranged displaceably in a receiving bore 49 and by means of the Groove 50 and feather key 51 guided axially.

Analogous to the first embodiment according to FIG. 3 In this second embodiment, the quill is also firmly connected to a head piece 52, in whose threaded hole 53 the threaded spindle 54 is screwed. A cover plate 55 closes the receiving bore 49 and serves to support the threaded spindle that connects the scale 32 with the handle 33 wearing. The scale 32 is in turn calibrated for additional weights.

The actuating shaft 45 is driven by an actuating rack 56 which is used axially to adjust a positive or negative camber is displaceable in opposite directions. The controlled actuator preferably takes place hydraulically or by an electric motor. In Fig. 5 is a hydraulic actuator shown.

A cylinder 58 for an actuating piston 59 is flanged to the housing 57 of the rack is connected by a piston rod 60 to the rack. In the in F i g. 5 position shown the piston 59 is in its middle position for the camber "0". The left cylinder space 61 is used > to stop a negative fall. The right cylinder space 62 is used to set a positive one Fall. The double arrow 63 shows the directions of movement of the rack for the settings of the positive and negative fall. The pressure medium for acting on the piston 59 is through the Lines 64 and 65 are supplied and discharged.

The quill 48 has an opening 66 on its underside for the worm drive 43, 44 and

409 618/61

1 9Ü9 637

ίο

on its top an opening 66 a for the rack 56. Another slot-like opening 67 is arranged on the top of the housing 57 of the adjusting rack to connect the Adjusting rack with a limit switch cam control 68 to produce that of the displacement the support sleeve 3 is dependent.

For this purpose, a limit switch bracket 69 is attached to the top of the rack by means of screws $ 6 attached and formed so that it passes through the slot 67 in the housing 57 and the movement the rack can also perform. The movement drive of the adjusting piston 59 and the adjusting rack 56 is controlled by several limit switches 70, 71 and 72. The control is carried out by Solenoid valves, not shown, which are arranged in lines 64 and 65. The limit switch 70 controls the positive camber, the limit switch 71 the negative camber and the limit switch 72 the camber "0". The limit switches 70 and 71 are attached to the limit switch carrier 69. The limit switch 72 for the fall "0" is permanently connected to the headstock housing. The switching cam assigned to this limit switch is denoted by 73. It is arranged on the head side of the limit switch carrier 69.

The switching cams 74 and 75 assigned to the limit switches 70 and 71 are on toothed racks 76 and 77 fastened, which in a fixedly connected to the headstock housing guide block 78 against each other felt agile. The racks are opposite each other, so that the teeth are directed against each other. Between Racks meet the common drive pinion 79. The pinion shaft 80 extends through the guide block 78 and is supported therein by means of the bearing 81. The second bearing 82 is located in the at a distance bearing block 83. Between the guide block and the bearing block is on the pinion shaft a worm wheel 84 is attached, which can be driven by a worm 85 of a feed shaft 86. The feed shaft moves the support sleeve 3.

In the position shown in Fig. 5 are the two racks 76 and 77 for the positive and negative camber in a position in which the support sleeve 3 is retracted. The two switching cams 74

ίο and 75 take their outer end positions, the correspond to the longest shutdown routes.

If the support sleeve is extended, the two racks move in the direction of the two shown The arrows and the switching cams move into the position shown in dashed lines. The Absehaltwegc between the switching cams and the tappets of the limit switch and the related adjustment path on the Adjusting bushes 16 are shorter, the larger the projection the support sleeve 3 and vice versa.

The adjustment device described above for the camber in the vertical plane of action enables -Miiit the Keeping the setting angle "of the sieve in every position of the support sleeve, regardless of whether it is retracted or extended. The stcling device for the fall works because of the required variable voltage ratios depending on the Displacement drive of the support sleeve, the size of the clamping forces for the camber setting by the Limit switch cam control 68 is controlled.

The grooved clamping element 11 has in combination with the sag compensation spiral grooves 14 and without the sag compensation straight Grooves 14 ". This applies to both embodiments according to FIGS. 3 and 4, 5. '

The clamping unit arranged in the horizontal plane of action works in both embodiments with constant weight.

For this 1 sheet of drawings

Claims (5)

Patent claims: 1. Use of a deflection compensation £ ation device for extendable support sleeves with built-in work spindle on horizontal drilling and milling machines, through which the deflection of the support sleeve due to its own weight as well as attachable additional units is compensated and the compensation through screw action is achieved by means of clamping elements, and at the top or bottom of the support sleeve a clamping element between a front in the axial direction and a rear in the axial direction with the support sleeve firmly connected guide piece arranged and tensioned by a screw drive is, which can be actuated via a spiral-grooved shaft arranged parallel to the support sleeve, which at the support sleeve shift runs in a stationary drive bushing to adjust the camber of the support sleeve, the drive bushing for actuating the grooved rotatable shaft (H) of one or more Tensioning unit (9, 10) for camber adjustment rotatably and adjustable mounted and as an adjusting sleeve (16) is designed, the angle of rotation of which determines the size of the fall, this being exclusively for Camber adjustment serving clamping unit has a shaft (11) with straight grooves (14 α). 2. camber adjustment device according to claim 1, characterized in that two clamping units (9 and 10) are arranged offset by 90 ° above and to the side of the support sleeve (3) and each Tensioning unit by turning its adjusting sleeve (16) in both directions of rotation tensile and compressive forces exerts on the support sleeve (3), creating a positive and negative fall through opposite Adjusting movements are adjustable. 3. camber adjustment device according to claims 1 and 2, characterized in that the rotatable shafts (11) of the two clamping units (9 and 10) at the inner end of the support sleeve (3) firmly connected in a mn of these: i bearing block (18) are axially immovable and the non-rotatable clamping elements (12) of the two clamping units in one on the outer face the retaining plate (20) screwed onto the support sleeve are firmly screwed in. 4. camber adjustment device according to claim 3, characterized in that the rotatable shafts (Ii) supported in the bearing block (18) by disk spring assemblies (19) acting in both directions are. 5. camber adjustment device according to claims "1 to 4, characterized in that the Stcllbuchscii (IC) in a manner known per se from each a Zahnkoibcn (23) can be actuated, which in a cylinder (26, 26 a) arranged transversely to the support sleeve (3) with the aid of two stop pistons (35. 36) can be switched into three axial positions, two end positions and one central position is.