US2375408A - Machine tool - Google Patents

Description

May 8,1945. K; F. GALLlMoRE ET A1.` v u 2,375,408

' MAGHINETOOL Filed Nov. 21,1942 :s sheets-.Sheet i May 8, 1945- K. F. GALLIMORE ETAL A3753198 MACHINE4 TOOL Filed Nov. 21, 1942 v s sheets-sheet 2 sewfgw www ,mu M m aOQr @IME hw?. um?

May v8, 1945. K. F. GALLIMORE ET AL MACHINE TOOLy Filed Nov. 21; 1942 5 sheets-sheet 3 PatentedMay 8, 1945 Lewis Machine Tool Co., Fond liu4 Lac, Wis., n

corporation of Wisconsin Application November 21, 1942,- Serial No. 466.3198

7 claims. (cm1-Asi' The invention relates to machinetools oi' the `type commonly known as horizontal boring,` drilling and milling machines and more particularly tov improved chip disposal means for such machines.

Machines of the'above general character are commonly Iemployed for machining relatively large workpieces and, when performing certain types of operations. as for example, roughing operations,l they produce substantial quantities "of chips-oi the material removed from the work'. One object ofthe present invention is to provide an' improved bedconstl'uction for such ynachine lembodying novel features oi' construction whereby the' chips are collected at av point where theyc'annot interfere with the movement of the machine elements andi'rom which they can be conveniently and sai'ely removed -without stopping .the machine.

Another object is to provide 'irnproved guard means for protecting the Ways of such machine from chips or other foreign' material.

tional The exemplary fa casting andthe construction and arran ement of the component parts lconstitutes .an im feature' of the present invention as will be def.

-scribed in detail hereinafter.- For a general .understandingyoi' the machinaconstructionit isv sufiicient to note, atv thlstime, that the bed'is provided on itsupper facev with a series of longitudinally extending parallel ways. In the particular machine illustrated", three such waysare provided, namely, a front way i2, an intermediate wayr`i3 and a rear way I4, as shown in Figs. 2

and 3. A carriage or saddle il (Figs. l, 3 ando) ismounted on thev ways for translation along the'.

bed. The saddle in turnis'provided on'its upper.

' face with spaced parallel ways I6 (Fig. l) ex- Other objectsv and advantages of the invention will become apparent from the following detailed' description of the preferred embodiment illustraied in the accompanying drawings in which: Figure 1 is a front elevational view o! a hri- `zontal boring, drilling and milling machine embodying the features of the invention.

Fig. 2 is -a transverse vertical sectional view.

of the machine bed taken. along the line 2-2 oi Fig. 1.

Fig. 3 is a fragmentary plan view oi the machine bed showing ldetails ot. the section adjacent the headstock column.

`Fig. 4 is a vertical sectional view taken along the line 4--4 o! Fig. 2 showingthe construction and interiitting relationship of the .elements of the way guards.

Fig. 5 is a vertical sectional view taken. longitudinally of the machine bed substantially in the plane of the line -5--5 oi Fig. 3.

While ythe invention is susceptible 'of various modiilcations and alternative constructions, we

have shown in the drawings and will hereindescribe in detail the preferred embodiment, but it isto be understood that .we do .not thereby intend to limit the invention to the specific :form

tending transversely of the machine bea.- A table.` I1 is slidablyvmounted on the ways I6, the tablel having its upper face Aformed with a series of T-slots I8 to facilitate clamping a workpiece, such as-a casting W, thereon..

Rigidly mounted at oneend of the lbed I0 isy an vupstanding column 20- provided .with vertical M guides or ways 2i on which a. spindle headstock 22 is adapted to. travel. The headstock may be of any suitable construction and is equipped with a longitudinally disposed spindle 23 adapted to -be rotatably 'driven by a" motor M carried on the headstok. The spindle 23 projects from the side'v of the headstock adjacent the table il and is adapted to carry a boring tool, drill, milling cutter or other suitable toc for operating on the workpiece W carried on the table I5. Asherein shown a conventional milling cutter 2l is mounted on.

the spindle. l Adjustably secured to the opposite end oi-the machine bed Iii is an upstanding column 30 having vertical ways Si on which an end block or tai1stock'32 is adapted 4to travel synchronously .with the headstock.. In operation, the tailstock disclosed, but intend to cover all modiilcations,

adaptations and alternative constructions falling` within the spirit and scope of the invention as deilned in the appended claims.

' vFor purposes ot illustration the invention has been shown as incorporated in a horizontal boring, drilling and milling machine ot the conven-l is' alined axially withftheA spindle 23 and coacts therewith Ain 'well-known manner vto support a tool bar-or arbor (not shown) whenfsuchis used.

lSuitable power drive means is provided for ltranslating the various movable elements oi the machine.. For this purpose one or more-driving motors M'. are mounted at the base of the column 20 adjacent-the endet the machine bed and are v connected through the usualshafts, gearing and other driving instrumentalltie's to the machine.A

elements. Manually operable controls are provided so that the machine attendant may readily machine comprised generally a horizontal'base or bed i0 adapted tobe anchored to the iioor or other suitable foun- .dation I-I. The bed In may -be in the f control the direction andd'ate of movement of any machine element. ese movementsv are utilized both to position the tool and work when the machine is initially set up for operation and to eect the relative feeding movements required 'to traverse the tool over the work.

Referring more particularly to Figs. 2 and 5 the machine bed l0, in its preferred form, is constructed with a front wall 35, a rear Wall A36 and' a plurality of intermediate lwalls 31, 31', 37" and 3`l'" arranged in parallel relation. The members forming these walls extend the full-length of thev bed and are integral .with or rigidly secured `to a horizontal bottom plate 38 and are suitably cored to reduce the weight ofthe bed while maintaining the necessary strength and rigidity. As herein shown, the wallmembers are arranged in pairs to provide support for the horizontal members 39 which have their upper and side surfaces machined to form the ways I2, I3 and I4.

Extending between the wall members are a plurality of cross-members or webs 40 which serve to impart the necessary rigidityto the bed. The walls, cross-members, way members and bottom plate may be cast integrally or suitably secured together as by weldingto provide a' strong, rigid machine base or bed. l

It will be apparent upon reference to Fig. 1 of the drawings that the chips removed from the workpiece W by the tool 25 wlll'iall to the table il and then onto the section of the machine bed between the saddle and the headstock column. One of the primary features of the present invention resides in the novel construction of the y bed so as to prevent -the chips from piling up infront of the saddle vand to facilitate their re` moval from the machine. To this end the intermediate walls''l, si" and 31 in the section of the bed exposed upon movement of the saddle i to the dotted line position shown in Fig. 1,

y are cut away rto provide a series of transverse l tween alternate pairs of webs. The section of passages or chip receiving compartments $5 the side Walls of which are formed by thewebs All (see Fig. 5). These compartments open upwardly between the ways I2, I3 and M as shown in Fig. 3. Preferably the compartments are provided beeach web intermediate the ways merges into a cap member 46 which `extends over and covers the space between adjacent compartments. The cap members are formed with fa'generallyconvex upper surface di (Fig. 5) which is effective to deflect falling chips into one or the other of the adjacent "compartments, The lower edge of each cap member preferably extends vover the wall of the compartment as indicated at 48 whereby the chips are directed towards the center of the compartment. At theend of the bed adjacent the headstock column, the cap member 48 extends from lastA web I@ to -a vertical wall member 49 forming a part of the column supporting section of the bed.

To facilitate chip removal, the compartments are arranged to open through the front walll of receptacles, such as rectangular metal-pans 50 having handles 5I at each end are placed therein.

l.The receptacles 50 are preferably dimensioned to t relatively snugly in the compartments so that their sides underlie the projecting edges IIS of the cap members, thus'insuring the deposit ofv all chips in thereceptacles. When two such receptacles are used in a compartment, they are pref erably arranged to meet below the intermediate sitating stopping of the machine.

compartments.

ing in substantially horizontal ledges 60,.

5 ing of the same and to assist in carrying away This coolant is received in the rethe chips.

ceptacles along with the chips. The bottom of each receptacle is desirably perforated as at 52 to drain the coolant from the receptacle so that 10 it may be returned to the reservoir or sump (not shown) through suitable openings 53 in the bottom plate 38 of the bed. To facilitate drainage of the receptacles, the bottom plate may-beformed to provide spaced ribs 54 extending longitudi- 15 nally of each compartment'and operative to support the receptacle in an elevated position.

When the machine is in operation, one or more of the compartments will be exposedfor the reception of chips, depending upon the position of go the saddle l5 on the bed. Falling chips are deiiected vinto thereceptacles 50 by the overhanging caps 46 between the chip compartments and the receptacles may be withdrawn from time to time for disposing of accumulated chips without neces- A small portion of the chips produced by the tool will be deposited .on the'edge of the work table I5 and the exposed horizontal parts of the bed but these may be easily brushed off into the chip receiving The removal of chip deposits from such parts is greatly facilitated by guarding means arranged to cover the ways and other parts of the machine bed so that no grooves,.ledges, ribs or other surface irregularities are presented 36 in which the chips might accumulate and from .40 and thus materially assists in preserving the accuracy of such parts.,` y

Since the saddle I5 is translatable on the ways I2, I3 and I4, varying portions of the way surfaces are exposed in the zone in which the mostI 45 of the chips are produced, that is, in the section of the bed between the saddle and'the headstock column.' The way guarding means provided by the'present invention is accordingly constructed so as to completely enclose such exposed areas- 59 and efectually prevent theefdeposit of chips or other foreign material thereon regardless of the position of the saddle on the ways. Invthe particular machine illustrated, a separate guard isl provided for each of the three ways I2, I3 and y f5 I4.. As thesev guards are similar in construction a detailed description of one will suice. .f

Referring to Fig. 2; of the drawings, it will be observed that the ways I2 and I6 are formed with inwardly facing vertical surfaces terminat- The intermediate way 'I3 is likewise ovided with vertically Adisposed surfaces whic in this/ instance, serve to guide the saddle Iii` in its movei ments on the ways. These guidev surfaces ter-1 y 'minato at their lower edges in generally` horithe bed as shown in Figs. 1 and 2 and suitable. y

cover both the horizontal waysurfaoes and the ledges above mentioned tolprevent the' accumu- -79 lation of chips or other foreign material thereon.

To assist the guard means in performing this function a'shield `62 of sheet metal or other suit- 'able material is mounted on each ledge 'to extend upwardly tapproximately the same height as the horizontal way surfaces.- u

chips can fall between the re- Referring now to Figs. 2-5 of' the drawings, each way guard has a plurality of channelshaped sections dimensioned for interntting telescoping relation so that the guard may be closed up or collapsed to relatively short length. When so collapsed, the guard for the-way` is adapted to ilt within arecess or pocket in the basel of the column 20 when the saddle is moved into close proximity'to the column as shown in Fig. 4. The guards for the ways I2 and I3. when collapsed, t within sheet metal housings 63 carried on the column supporting section of the bed im- '.mediately below the headstock. Each of the guards, however, is capable of extension so as to cover ythe entire exposed area of the lways when the saddle is moved to the position shown in broken lines in Fig. 1, that is, to the extreme position at the opposite end of the machine bed. As shown in sFigs. 4 and 5, the housing 63 is closed at the top by a horizontal top plate 64.

The guard provided in the exemplary machine is formed in four sections 65, 66, 61 and 68 (Fig.

-5) although it will be understood that the numberof sections mayv vary.v as required byI the length of the machine bed and the ways to be enclosed. The several sections of the guard are generally similar to form but vary progressively in sizei to permit the'telescoping interfit hereinbefore referred to.` In the preferred form shown, each section comprises a horizontal top plate of suflicient width to extend over the horizontal 1I suitably attached to the undersides of the re- These. guide blocks vary spective sections. l y progressively in height so as to maintain the top plate 10 of the respective sections parallel with the waysurface.

Since the terminal section 68 is anchoredl to the saddle I3, this section, of coursel follows the movements of the saddle von the guide ways. In

order to enable the other sections to follow such movements, suitable interlockingmeans is provided between adjacent sections of the series. As herein shown this interlocking means comprises a stop strip mounted on the underside of the section adjacent its forward edge in position tov be engaged by a stop engaging strip 16 'attached to the upper surface of the plate 10 adjacent its rear edge. Thus, when the section 68 is' moved to the left the strip 16 engages the stop 15 to draw the section G1 along with it.

Section 61 in turn ypulls along the section 66 .while the latter coacts in the same manner with section 65. To -prevent complete withdrawal of the latter sections from the recess or housings 63, stop members 11 are provided on the column 20 and on the plate 6l for engagement by the stop engaging strip 16 of the respective se'etions 65.

The stop strip 15 and stop engaging strip 16 are preferably in the form of relatively thin metal strips extending across the entire width of the top plate 10 of each section. A double sliding bearing is thus provided between the top plates of adjacent sections which forms an eifective seal against the entry of chips or other foreign material into the assembly of guide sections.

each of thel stop strips 15 rides over the surface of the adjacent underlying section, if; is operative in the collapsing of the sections to push the collected chips oif of the same, the chips falling into the compartments provided for their reception: The recess in the column and the housings 63 are effectively sealed by a wiper 18 of felt or other suitable material arranged for coaction with the top plate lllof the terminal section 65. f

In the above lconstruction the way .guard is readily collapsed by telescoping the several sections together so that the entire assembly may be received within the column recess or housingv 83 when the saddle is shiftedploselyladjacent the headstock-column 2D as shown in Fig. 4. Tracks 19 act to guide and support the sections' in their collapsed condition. As the saddle is traversed to the left (as viewed in Fig. 5) the guard section 68 is first withdrawn from the nested series of sections followed successively by sections 61, 66 and 65 thus insuring complete coverage of the Ways regardless of the position of the saddle I3 thereon. Moreover, due to the eiiicient seal prow ve ently removed while themachine is operating Wit out endangering the attendant.

The invention also provides improved guard means which eil'ectually prevents the deposit of chips or other foreign material on the ways regardless of the position of the machine element which is translatable on such ways. The guard means is simple in construction, eflicient in operation and does not interfere in any way with the normal operation of the machine.

We claim as our invention:

1. In a horizontal boring machine, in combination, an elongated bed having horizontal guide Ways on its upper face, a saddle mounted for reclprocation on said ways, a work supporting table mounted on said saddle, an upright column on saidv bed adjacent one end of said ways, a spindleV headstock on said column adapted tol carry a tool for operating on a workpiece supported on said table, said saddle being shiftable on said ways to vary the spacing of the. table with reference to the headstock column, and guard means for preventing the deposit of chips removed from the .work by the tool upon the section of the ways between lthe saddle and the column, said guard means comprising a series of inverted generally channel-shaped sections arranged in telescoping relation upon each offsaid ways, means operatively connecting one terminal section of each series with the saddle, and stop engaging means on each section cooperating withy stop means on the next adjacent section for limiting the extent of movement of the one section with respect to the other wereby to maintain a continuous cover overthe ways in any position of the saddle.

V2. In a horizontallboring machine, in combination, an elongated bed having a plurality of.

horizontal guide ways on its upper face, a saddle mounted for reciprocation on said ways, a work supporting table mounted on said saddle, an upright column on said bed adjacent one end of said ways, a spindle headstock on vsaid column adapted to carry a tool for operating on a workpiece supported on said table, said saddle beingv shiftable on said ways to vary the spacing of the table with reference to the headstock column, and guard means associated with each of saidways for preventing the deposit of chips removed from the work by the tool upon the portion thereof between the saddle and the column, 'each of said guard means comprising a series of generally channel-shaped sheet metal sections of gradually decreasing width arranged in nesting relation, means anchoring one terminal section of the series to the saddle, stop engaging means on the other terminal section cooperating with a stationary stop adjacent said column, and stop engaging means on said one terminal section and the intermediate sections cooperating with stop means on the next adjacent sections for limiting the extent of movement of one section with respect to the other, said sections being movable along the ways in succession from a telescoping nested relation upon movement Iof the saddle away from the column so as to provide a continuous cover for the way in all positions of the saddle.

3. In a. horizontal boring machine, in combination, an elongated bed having horizontal guide ways on `its upper face, a ,saddle mounted for reciprocation on said ways, a work supporting table mounted on said saddle, an upright column on said bed adjacent one end of said ways, a

spindle headstock on said column adapted to. i'

carry a tool for operating on a workpiece supported on said table, said saddle being shiftable on said ways to' vary the spacing of the table with reference to the headstock column, and, guard means assoclated'with each guideway foro preventing the deposit of chips removed from the work by the tool, upon the portion thereof between the saddle and the column, each of said guard means comprising 'a series of generally channelshaped sheet metal sections of gradually decreasing width arranged in nesting relation, means anchoring the forward end of one terminal nation, an elongated bed including front and rear longitudinal walls, spaced horizontally disposed ways on the upper face of said bed, a work support reciprocable on said ways, a support at one end of said bed for a tool adapted to operate on the Work, rigid cross members extending between said front andV rear walls and defining a longitudinal series of transverse compartments within said bed, cap members rigid with and extending between the'front and rear walls of the bed and rigid with and overlying said cross members to close the alternate compartments defined by such members, the other of said compartments opening upzwardly between said ways to receive chips removed from the work by the tool, said 'chip receiving compartments also opening through one of said walls to facilitate the removal of chips therefrom. y 6. In a machine of the type described, in combination, an elongated bed including front and rear. vertical longitudinally extending walls,

spaced horizontally disposed Ways on the upper portion of said bed, a work support reciprocable on' said ways, rigid vertical walls connected to and extending crosswise in parallel spaced relation between said front and rear walls and constiof transverse compartments entirely within said bed, rigid cap members connected to and extendsection to the saddle, stop engaging means on the rear end of said one section and on each succeeding section adapted to cooperate with stop means on the forward endv of the next adjacent sectionto eiect movement of the sections along the ways in succession incident to the move'- lment of the saddle away from the column, and

stop engaging lmeans on the rear end of the` other terminal section of the series cooperating /with stationary stop meer@ djacent the column for limiting the extent of m v ment of said other terminal member.

i 60 4. In a machine of the type described, in comments opening upwardly between said ways to receive chips removed from the work by the tool,

- the compartments intermediate said chip receiving compartments being closed at their upper ends :and means carried by certain of thel adapted to cooperate with the adjacent underlying sections in the collapsing of said sections? for discharging the chips deposited thereon into ing between said front and rear walls and con-V nected to and overlying said cross members to close vcompletely alternate ones of said compartments and projecting partially over while leaving open the others of said compartments to receive chips dropping between said ways, said chip receiving compartments each having a bottom wall with parallel spaced upstanding ribs extending transversely of rsaid bed and having access openings in at least one of said walls, and a plurality of chip pans removably inserted through said openings respectivelyinto said open compartments-and supported on said ribs, said pans being disposed to receive the chips dropping into said open compartments, and the intermediate ones of vsaid cap members being of inverted V-shape to direct chips falling thereon into the compartments contiguous thereto.

bination, an elongated bed including -front and rear longitudinal Walls, horizontally disposed elevated ways extending longitudinally of the bed, a tool support at one end of said bed, a work lsupport mounted on said ways for movement toward and from saidl tool support, cross members connecting said walls of said bed and dening a series of chip receiving compartments opening upwardly between. the ways, chip guards protecting said ways, each 'guard comprising a group ofinverted generally channel shaped sections arranged in nesting relation upon the associated way, means operably connecting the terminal sections of each group with the Work and tool supports respectively whereby said guard sections are automatically extended and collapsed in response to the movements of said work support, sections said chip receiving compartmentsm v KEITH F. G UMORE.

GARNER SCI-IURGER.

Images