US1333043A - Lathe-frame - Google Patents

Description

G. A. STEINLE, NLSMITH AND L. R. TAYLOR..

1 LATHE FRAME.

APPLICATIQN' 'man 1111315.19111.

I Patented M3129, 1920.

3 SHEETS-SHEET l.

ff N @111111, @im W .S '11u11 15111 i fiumi-4W" Humm .1

n .f 732/6722021; 6kg/mf A .S75/m. s

l G. A. STVEINLE, M. SMITH AND L. R. TAYLOR.

LATHE FRAME.

APPLICATIQN FILED Aua.15. 1913.

Patented Mar. 9,1920.

3 SHEETS-SHEET 2- G. A. STEINLE, M. SMITH AND L. R. TAYLOR. LA'IHE FRAME.

APPLICATION FILED AUG-15. |918.

Patented Mar. 9, 1920.

3 SHEETS-SHEET 3.

45 tion of one of the side bar supporting pedes- UNrTEn STATENT erntenf GEORGE A. sTEINLE, MARK SMITH, ANnLoiIIsn. TAYLOR, orivrAnrscr-r,wisconsin.`

LATHE-FRAME.

Speccaton of Letters Patent.

Application filed August 15,9 1918. Serial No. 250,027.

frames, and particularly toimprovements in the frames of long lathes adapted especially for boring and-turning the exterior-of naval and .army guns, although the advantages of the present invention maybe utilizedin the 'construction of smaller and shorter lathes.

The invention consists .generally in the constructions and combinations hereinafter described and particularly'pointed out in the claims. v Y

In the accompanying drawings, forming part ofthis specification, f f

Figure l is a plan view,'partly broken` away, showing the vmain features of a lathe having a frame constructed in `accordance with our invention. f

' Fig. 2 is a side elevation of the structure illustrated in Fig. l, Y f

Fig. 3 is an elevation of one of the end housings, v

Fig. 4 is qa similar view, partly vbroken away, of the rear headstock housing,

Fig. 5 is an elevation Fig. Gisan elevation of one of the double mediate portions ofi'the ground shafts constituting the side members of the frame, the ways .uponQwhich the tool `carriage is reciprocated, and the boring bar guides fand the head stock housings are supported. f

Fig. 7 is a side elevationfof the frame corresponding to Fig.V 2, but on a larger scale with the operative parts of the latheomitted, Fig; 8 is an end elevationand partiall sectals showing kalso one lof the groundl shafts,

for lside bars, supported thereon 'and the means forsecu'ring said side bars'in posi'- tion` w Fig. 9 is an enlarged detail of one ofthe pedestals showing the means for securing the lower side bar in position and the means for supporting the irack. Y .FiglOis adetail showingthe means for adjustably,Y supportinggthe rear `boring bar of the front headv Y stock housing, Y ,35 Y g pedestals supporting and alining the interguide fonthe upper cylindrical side members of the frame.

-In the vdrawings k2, 2, represent the end housings of the lathe. These housings are preferably duplicate castings provided with perforated outwardly extending bottom -ilanges 3,k by whichthey may be bolted or otherwise secured to a suitable base. Each housing is also provided with an upper pairv of cylindrical bearing openings 4, 4, Fig. 3

and a corresponding lowerV pair of similar bearing openings 5, 5, Fig. 3. Each `housing is also provided with yan upper cylindrical gpening 6 forming a bearing for a boring While we have shown the end housings each provided-with a single pair of upper bearing openings 4, 4, and a singlepair of lower bearingopenings 5, 5, it will beunderstood that for lathes with wider frames Patented Mar. 9, 1920.

we may employ two pairs of upper bearing'l f openings, andtwo pairs of lowerbearing.

openings, orif greater rigidity isnecessary, o the upper and lower bearing openings may arranged in groups of 3 instead of in pairs. This, however, will not alter the principle of thehereindescribed frame construction'.l We also prefer to provide the hous-y V ings with bearing openings 4` and rfor the driving shafts of the boring and turning mechanism. l Y

g For supporting the head stock and rota,-` table chuck by which the gun or other article to be bored or turned is clamped and rotated, we provide a pair of head stock housin vpreferably in the form illustrated in Fig. 4

of the drawings. These housings we design nate by the reference numerals 7 and 7". They are provided with bearing'openings for thev cylindrical side barsor1nembers, l

and, as these bearing openings are similarto those in the end housings and are corre- 'i spondingly located we have designated them v by the reference numerals 4 and 5, and have also 4designatedthe securing flanges or feetV at the bottom of the housings by the referrand 7 fare provided with openings A8 to receive and support the rotatable "chuckv9' (see Figs. 1 and k2) kand the 'gearing` arranged I ence numeral 3.k The head stock housings 7 l thereon, and are also provided wlthvbearing n openingsvlO that support a counter shaft 11. The head stock housings 7 and 7 are, preferably,v for the purpose of securingA greater rigidity,connected by a suitable arch-or castine 12.. (See lFigs-*L 2 and 7i) f '5 in the head stock housings.

The side members oiC the iframe, both the upper' and lower members, are preferably composed Voi' cylindrical bars or ground shafts designated in the drawings by the reference numerals 13 and lll. The ends of the bars 13 kare secured inthe bearing openings i in the end housings 2,'and said bars extend through the corresponding lbearing openings et in the head stock housings 7 and" Tf. The lower 'baislare secured in the bearing openings in the end housings 2and'V extend through the corresponding openings The upper surfaces of the upper pair of bars 13 also torni ways upon which the tool carriage orcarriages are longitudinally re`- ciprocated, and upon whichthe rear boring bar suppoitl is longitudinally adjustable.

It is, therefore necessary Vte provide a series oi intermediate supports for both the upper side bars 13 andthe lower side bars 14, and it is alsoiiecessaiy to have the upper portions of the bars leXposed for their full Y len th so that the tool carriages andthe ad# justable boring bar support may inove'treely along' said ways, whiley being supported thereby.

For this purpose we provide a series of i standards or pedestals 15 (see Fig. 6), each of which is provided with bearing openings `5 corresponding to the like numbered open-- ings in the end housing 2 and the head stock housings 7 and 7, and we provide the upper portion of said pedestals with pairs ofA curved recesses au, the walls of' said nrecesses being arcs. of .circles corresponding in vloca- Y tion and size with corresponding arcs of the bearing openings el. inthe housings "7 and 7".

The `cylindrical bars are preferably securedV in the recesses a in the pedestals 1.5 by means of bolts 1G located in Countersunk openings 17 in said bars, as shown iu detail g in FigQS of the drawings, and we prefer to VVfill the said openings above the heads of the bolts with woodenplugs 1S, which prevent dirt'or material from' accumulating in said openings. Y i f Y l We prefer toconstructthese pedestals Vwith 'complete circular openings, that is,V to say Vwith the metal extending in a complete circle around 'each opening as indicated by the dotted'lines in ,'Fig. 8,- with a hole through the outer part thereof opposite i' 1 thehole that vis to receive the threaded end Vof the bolt, and after the side bars 13 arev placedV in position and are bolted tothe pedestals, as illustratedlin Fig. .8, the outer 'portion of the metal, or the* part indicated i byfthe dotted' circle in Fig. 8,'is cut away so as to leave the upper and a part of the outer surface ofthe bar 13 e-Xposed, as illustrated kfor example in'Fig. 10.

' The pedestals 15 are also preferably pro-V vided with flanges or feet by which theypmay be boltedV or secu-red to a suitable base and the traine, we prefer to provide the rear head stock housing '7, eachof the pedestals 15 and the rear end housing 2 with a rectangular shoulder 22 (see Figs. 5, 6, 9, and 10), upon which said rack may be supported as illustratedin detail in Fig. 9.

For the purpose of holding the boring bar guide, which is indicated in Fig. 2 by the reference numeral '23,v in position on the upper side bars 13, we prefer to provide. a block 2a which lits againstthe side. of, the bar 13 below the center thereof and is secured to the .outer portion of said boring bar guide by means of suitable screws 25. This insures retention 'of this guide in position `on the side bars 18 while it is being adjusted,longitudinally of the machine. Y Y.

Thelathe herein shown is designed to bore a cylinder, such as a cannon, from both ends.

It is, therefore, provided withY twoi boring bars marked 26 and 27. These bars are suit ably supported in line with each other andV are provided with racks 28 and are arranged to loe-fed forward as the progresses. Y ,f Y Y The present invention, however, is conboring Yoperation fined to the construction of the lathe. traine and we do not consider it necessary to describe in this application the means for supporting or feeding thejboring bars or the means for rotating the chuck, the means `for reciprocating the tool carriage, orthe means for adjusting the boriiiggbar guide.v These' features, inV so faras they are new with us, areV claimed in separate applications, Serial Nos. 250,028 vand 250,029. filed ofi even date herewith. Y i Y 'i For the purpose of cheapening.'thejcon- Vstruction we prefer to employ sideibars 13 madeV up of several 'sections arranged with iioV abutting ends as shown i'nFigs. 1, 2 and 7, ,Y the Joint'at the abutting ends of the sectionsbeing indicated by the reference iuiineralO,V

and heldwe prefer touse pedestalsl at the 'i joints substantially `double the Width ofthe other pedestals as illustrated particularly in 1 Y Fig. 7. This pedestal vis the saine as the other pedestals 15 except that it hasV substantially double Width to forni a bea-ring for the abutting endsof sections of the bars 13.

` There numerous advantages resulting 'from this `frame censtruction'.fY'ilhecyli'ruilriL l2() To permit thesen'endsto be properly alinedV bars.

'cal bars 1.3 and 14 are commercial articles l designated in the market as ground shafts.

With a lathe of ordinary construction the ways of the lathe bed must be planed. For

these large lathes only .big planers canbe employed and at the present time such planers are very difficult if not impossible to obtain. With our construction `any number of sections may be employed to form the side This necessitates no change in the .construction except to require the use of a greater number ofsupporting pedestals.

As hereiiibefore stated instead of using a single pair of the upper-side bars 13 and a single pair of the lower side bars 14, one bar of each pair being located at one side of the center of the machine, we may use two pairs c able construct-ion for very large machines, iny which case each carriage will be supported upon two bars 13 both located on one side of the machine.

A frame embodying this invention is very quickly constructed, and the length of the frame may at any time be increased or decreased by adding or removing sections of side bars and their supporting pedestals.

Ve do not limit ourselves to the details of the construction as the same may be varied in many particulars within the scope of the claims which follow. y Y

We claim as our invention:

1. A latheframe comprising end housings lic ving bearing openings therein, cylindrical bars having their ends seated in said openings, pedestals supporting said bars intermediate to said housings and a lathe-carriage mounted for longitudinal movement on said bars.

' 2. A lathe frame comprising end housings,

' movement onsaid members. v

. housings and each of said members compris-v ing a plurality of said bars placed end to end, y

3. A lathe `frame comprising end housings, side members consisting of upper and lower cylindrical bars seated at their ends 1n said whereby the length of the lathe may be increased or decreased, pedestals supporting said members and having lbearings for the abuttingends thereof, and a lathe carriage mounted' for forward and backward movement onsaid members.

4.- A lathe frame comprising end housings, each having a pair of upper and a pairof lower bearing openings therein, cylindrical bars seated at their ends in said openings and forming the upper and lower side members `of the lathe frame, pedestals lhaving lower openings lfor the lower-cylindrical bars and upper curved seats for the upper cylindrical bars, and a lathek carriage supported on said upper bars and movab-le longitudinally ofthe lathe thereon.

5. A `lathe frame comprising end housings,

upper and lower side members mountedl therein, pedestals supporting said side members intermediate to said housings, head stock housings having openings therein through which Vsaid upper and lower side members extend, and an arched casting for said head stock housings.

G. A lathe frame comprising end housings, cylindrical bars mounted in said end housings and forming the'upper and lower side members of the lathe frame, pedestals supporting said cylindrical lbars intermediaie to said end housings,some of said pedestals being wider than others for supporting the abutting ends of the cylindrical bars forming said side members, said bars being removable from said housings and pedestals whereby the length of the lathe frame may be increased or decreased.

ings, cylindrical bars having their ends seated'in said housings, and `pedestals; supyportingsaid bars by engagement with the` under surfaces thereof leaving the upper Ysurfaces of said bars exposed.

' 8. A lathe frame comprising end housings, cylindrical bars having their endsV c 7. A lathe frame comprising end housbars exposed4 to form'ways for supporting a Y p lathe carriage and permitting its longitudinal movement on said bars.

9. -A lathe frame comprising end housings, cylindrical side bars seated at their ends in said housings, yand pedestals arranged between said endv housings and having curved seatsv for receiving and support- Ving said cylindrical bars and leaving their upper surfaces exposed, whereby a lathe'carriage supported on said bars is movable longitudinally thereon over said pedestals.

In witness whereof, we have hereunto set 'our hands this Srdday of August 1918.

GEORGE A. s'rEiNLn MARK SMITH.

Louis n. TAYLOR.

Witnesses:

WM. R. BAGLEY, FRANK'D. REED.y

i'io

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