US2472345A - Milling machine with pivoting and sliding head - Google Patents

Description

June 7, 1949. V c. SCHAUBLlN-VILLENEUVE 2,472,345

MILLING MACHINE WITH P IVOTING AND SLIDING HEAD Filed April 9, 1945 4 Sheets-Sheet 1 entor C, Scizaubleinxl zl dlezzewuc' June 7, 1949. c. SCHAUBLlN-VILLENEUVE 72,

MILLING MACHINE WITH PIVOTING AND SLIDING HEAD 4 Sheets-Sheet 2 Filed April 9, 1945 43' 42 as as VILLENEUVE 2,472,345

MILLING MACHINE WITH PIVOTING AND SLIDING HEAD Filed April 9, 1945 June 7, 1949. c. SCHAUBLIN- 4 Shets-Sheet s June 7, 1949. c. SCHAUBLlN-VILLENEUVE 2,472,345

MILLING MACHINE WITH PIVOTING AND SLIDING HEAD Filed April 9, 1945 4 Sheets-Sheet 4 2 fizz/enter I C 5 0105 Zara 1 25 Zena 0 (Q fmmys,

Patented June 7, 1 949 MILLING MACHINE WITH PIV-O'IIN G AND SLIDING HEAD Charles SchaublintVilleneuve;'Bevilard, iSwitzerland, xassignor to Schaublin S. A., ;Bevilard, Switzerland; a joint-stock company oi-Switzer-- land Application April 9, 1945, Serial No. 587,232 L=In SWitzerlandMarch 14, 1944 .Section LPulolic Law 690, August 8, 1946 Patent expires March 14, 1964 7 Claims. 1 This invention relatesto mil'lingmachines With pivotin and Sliding head. Machinesof thiskind, .permittingtthehtool carrier-to bewbrought. at a certain-distance:from. the'xframe without chan ing; anything in thertransmis'sion: means .1 driving the: mainshaft, are. well-known. In. certain types of::thesenmachinesmthe:spindle:can: also be ad- .justednaroundlacentrelying in. general, on the axis sitselfcofi the:.head. Hence: 'it follows. that the cutting: plane lotz'the'. toolscan have. very differentzdirections. Milling machinesoi this kind are;however; notr -sufficiently rigid; for certain works. 1.:Besides':this,.thelidistancel between the tablevof theaemachinez-gandxthe cut ng plane .the tool. is, almost. limited.to..;the strokeof. the table itself .Thesmmachines; require Sp ia devices for holding the head, when this latter is at its-maximum distance from the frame. "2. 13116. millingizmachine;according to the :inVentionis: characterised, in that it comprises a spindle adjustable; around an; axis; perpendicular to a separating. plane; going. through. the .axis around which the, sliding lheadlpivots. Owing to this disposition-the distance between the. table and the tool can, ;-.With-r egard to this-distance in the above-.mentioned machines be augmented or reducedbythe distance-separating the axis-of the sliding head fromthe axis of rotation-of the spindle. :Besides this, a diameter. andaweightcan be given to thebearings of. the spindle, sufiicient ior,. great. output and high .speed workwithout risking vibrationsinjuring the qualityof the work done.

lThe.,accompanying. drawings. illustrate by way of. exampleone .embodimentof the object of. invention.

Fig. 1. is a verticalsection through.v the mainshaft of the head of the milling machine,

Fig. 2 isan analogous section but seen from the other side of the machine,

' '."Fig.f.3 is a partial section. along line III-III of Fig.1,

' Fig. 4 is a partiaLview-oithe machine. ona smaller. scale thanjthe preceding figures, showing the head ina certainpositi'on,

Eigs. .5. .to..9..inclusive..are views similar to that of Fig. 4 but-with, the head other positions, ..Fig.;' is amend view. ofthe head oilthe-milling machine. the. spindle ..being.. in ...its highest horizontal position.

Referring now .toFigs. 1, 2 and 3; the framell has, on its upper.part, a cylindrical, longitudinally split bore 2 of great size in whicha hollow cylinder 1 is adjustedwith sliding seat, forming the outer envelope of the sliding. and pivoting head of the milling... machine. This cylinder can be locked in different positions. by means of a single handle 3 (Figs 5 and 6). YAt'thetOpOf the frame I a bearing 5 is mountediniwhichtthe mainshait 6 of the machine rotates. "This shaft carries a .pulley' 1 moved. by non-represented transmission means connecting .this'pulley either with agear box or a motor, according to kind of drive chosen.

The mainshaft 6 is lengthened towardsthe'inside of the hollow cylinder 4'.by-a part having key ways 8 along which can slide non-represented keys provided in a pinion 9 engaging another pinion It keyedonthe endof the countershaft ll journalledv in the hollow cylinder 4 andextending from one cylinder end to. the other. "The other end of this shaft carries a bevel wheel l2 engaging another .bevel wheel 13 "fixed" to a shaft l4. journallediin the end of the hollow 'cylinder 4 and whose axis..is"perpendicular; tosa plane goingthrough thelongitudinal axis of'the hollow cylinder. This: shaft l4.'carries on itsend a bevel wheel liimeshingxwith. another-bevel Wheel l5 fixed to thejspindle II. This latter rotates in a bearing body I8 having a foot [9 adjusted on. a flat surfacefllperpendicular. tdithe axis of the shaft l4. The footlS is held on this flat surface by means of bolts22 .(see Figs. land 8) whose headscan slide ingrooves 2| concentrical to the shaft 14. Hence it followsthatthe spindle I! can rotate varound the .aXis of the shaft l4 and can.be.adjusted in any..position ,whatever. around. this shaft.

On the foot 19 a graduation 23 (Figs. 5 and" 6) is provided allowing-of an exact inclination of the spindle relatively to.a position in which its axis is parallel to. the surface,- that is, parallel to the axis of the countershaft l I.

The bearing body 18 of the spindle. His of such a height that it finds place in half. the roomdisposable .in the end of thecylindrical bore2. In

the position shownlin. Fig. 1 where the cylinder 4 is completely .inside .this..bore,.-the non-represented cutter lfixedatoathe. .endbf the spindle. .is very near the frame of the machine. The hol-.

low-cylinder is of such dimensions that its moment of resistance is a multiple of those generally used in sliding heads of similar machines. In the position shown in the Fig. 1 it can, therefore, receive without vibrations the total reaction occurring when the cutter cuts a work piece. However, when the hollow cylinder is moved out of the bore 2 in order to adapt the position of the cutter to the working requirements, as is, for

instance, shown in Figs. 6, 7, 8 and 9, the head is held by means of supports 25 of well-known construction through the slots of which a central pin 26 passes, provided on the outer side of a counterbearing 21 having two bores. These bores receive the end of two supporting arms 28. There are on each side of the countershaft II passages and guides necessary for these supporting arms which can be drawn back at will into the hollow cylinder 4. On the end of the head hand screws 29 (Figs. 4 to are provided by means of which the supporting arms 28 can be locked.

Owing to the fact that the distance of these two supporting arms 28 around the mainshaft of the machine remains always the same and that the central pin 26 is coaxial to the mainshaft B the whole head, i. e. the cylinder 4 and all parts connected to it, can be rotated around the mainshaft without dismounting of any part becoming necessary, even when the supports are in place on the central pin 26.

The adjustment of the hollow cylinder 4 around the mainshaft 6 is effected by means of a toothed rim 30 fixed to a tubular lengthening 3| of the hollow cylinder 4. This toothed rim 30 engages a pinion 32 rotated by a shaft 33 along which it can slide in order to follow the longitudinal movements of the hollow cylinder 4. Shaft 33 is coupled with a gearing 34, one toothed wheel of which is fixed to the end of another shaft 35 journalled in the frame I and, by means of two bevel wheels 36, in connection with a shaft 31, perpendicular to the shaft 35. A hand wheel is keyed to this shaft 31, by means of which the shaft 33 can be rotated and the toothed rim 30 be acted upon in order to bring the hollow cylinder 4 into any position whatever around the mainshaft 6. It is understood that adjustment can be made in one or the other rotating direction. A graduation in degrees 50 (Figs. 9 and 10) is provided on a disc 24 on the end of the head, which allows the position of the hollow cylinder 4, thus of the whole head relatively to an initial position in which the shaft 14 is exactly perpendicular to the table of the milling machine, to be determined very exactly.

Shaft 31 is inserted into a hollow shaft 38 which carries on one end a pinion 39 and, on the other end, a hand wheel M. This pinion 39, which is especially seen in Figs. 2 and 3 meshes with a pinion 42 fixed to the end of a shaft 43 which, by means of a gearing 44 is in connection with a screw 45 parallel to the shaft 43. Screw 45 and shaft 33 are arranged symmetrically with regard to a vertical plane going through the axis of the mainshaft. On this screw 45 runs a threaded car 46 fixed to a ring 41 freely rotatable on the tubular lengthening 3! by the side of the toothed rim 30. The ring 41 is held in place by means of a ring 48 and screws 49.

By manipulating the hand wheel 4 i the screw 45 is rotated and the hollow cylinder 4 acted upon by means of the ear 46 and the ring 4'! in order to give it a longitudinal movement. This movement can be imparted whatever the position of 4 the hollow cylinder around the mainshaft 6 may be.

The two hand wheels 40 and 4| can be manipulated at the same time so that the longitudinal and pivoting movements can be executed simultaneously.

Fig. 4 illustrates the position occupied by the sliding and pivoting head when the hollow cylinder has been rotated by 180 relatively to its position shown in Fig. 1.

In Fig. 5 the head has been considerably advanced, however, without holding by means of the supporting arms 28 and the supports 25 becoming necessary. The spindle is still parallel to the mainshaft.

In the position shown in Fig. 6 the spindle is turned by relatively to the position which it occupied in Fig. 5, the counterbearing 21 is in place on the end of the supporting arms 28.

In Fig. 7 the spindle I1 is vertical. In Fig. 8 it is inclined. In Fig. 9 still another position of the Spindle and use of the supports 25 in combination with the counterbearing 21 is shown.

In Fig. 10 the hollow cylinder is turned by relatively to the position of Fig. 1, and the spindle i1 is likewise turned by 90.

What I claim is:

1. In a milling machine, a frame with a bore, a hollow cylindrical head slidably and pivotally mounted in said bore, a spindle with its rotation axis in a plane parallel to the rotation axis of said hollow head, a support carrying said spindle and mounted on said head adjustably around a revolving axis perpendicular to the rotation axis of said hollow head, said support having an outer circumference lying, together with said spindle, within the cross sectional area of said bore on said spindle being adjusted parallel to said rotation axis so as to allow withdrawing of said support and said spindle into said bore and driving means for said spindle, goin through said hollow head.

2. In a milling machine, a mainshaft, a frame with a bore coaxial to said mainshaft, a hollow cylindrical head slidably and pivotally mounted in said bore, a spindle with its rotation axi in a plane parallel to the rotation axis of said hollow head, driving means connecting said spindle with said mainshaft and going through said hollow head, a support carrying said spindle and mounted on said hollow head adjustably around a revolving axi perpendicular to the rotation axis of said hollow head, said support having an outer circumference lying, together with said spindle. within the cross sectional area of said bore on said spindle being adjusted parallel to said rotation axis so as to allow withdrawing of said support and said spindle into said bore, said hollow head comprising a supportin surface lying in the direction of said mainshaft, said support having an outer surface perpendicular to said revolving axi and movably adjusted on said supporting surface 3. In a milling machine according to claim 2, a drivin wheel in connection with said driving means and keyed to said mainshaft in a manner to allow relative axial movement between said mainshaft and said driving wheel.

4. In a milling machine according to claim 2, a toothed rim in rigid connection with said hollow head, a toothed wheel in engagement with said toothed rim, able to follow said hollow head on its longitudinal movements and a control device in driving connection with said toothed wheel for angularly adjusting said hollow head around to rotation axis.

5. In a milling machine according to claim 2, a ring freely rotatable on, but axially fixed relatively to said hollow head, a screw rotatably mounted on said frame and in engagement with said ring, and control means in engagement with said screw for displacing said hollow head longitudinally.

6. In a milling machine according to claim 2, a toothed rim in rigid connection with said hollow head, a toothed wheel in engagement with said toothed rim, able to follow said hollow cylinder on its longitudinal movements, a control device in driving connection with said toothed wheel for angularly adjusting said hollow head around its rotation axis, a ring freely rotatable on but axially fixed relatively to said hollow head, a screw rotatably mounted on said frame and in engagement with said ring, control means in engagement with said screw for displacing said hollow head longitudinally, said control device and said control means comprising together two concentrically arranged shafts and two superimposed hand wheels for operating said control device and control means, said screw and said toothed wheel being arranged symmetrically with regard to a vertical plane going through the axis of said hollow head.

7. In a milling machine according to claim 2, a counterbearing, said head comprising guides and locking means on both sides of said driving means, two supporting arms slidably adjusted in said guides and organised to be locked by said locking means and to be fixed to said counterbearing, said counterbearing having a pin coaxial to the rotation axis of said head, and supports with slots passed through by said pin to support said counterbearing.

CHARLES SCHAUBLIN-VILLENEUVE.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,967,107 Archea Oct. 9, 1934 2,175,592 Bennett Oct. 10, 1939 Bannow Mar. 3, 1942

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