USRE19448E - Machine tool slide and lubricator - Google Patents

Description

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` 5 1935- J. R. JoHNsoN Re. 19,448

MACHINE TOOL SLIDE AND-LUBRICATOR THEREFOR original Filed March 19, 1931 2 sheets-sheet 1 fils.

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Feb. 1,935.

E.) S Si w MJHNQ Reuma Feb'. 5, 1935 Re.v 19,448

John R.. Johnson, Rockford,l Ill., assignor to The Ingersoll Milling Machine Company, Rockf ord.

lll., a corporation of Illinois original No. 1,903,865, ama Api-111s, 193s, seri No. 523,793, March 19, 1931. 'Application for reime December s. 1934, sei-ua No. 155.838

8 Claiml.

The present invention relates in general to machine tools and has particular reference tol machine tool slide and lubricator therefor.

One object of the invention is to provide an improved machine tool slide or ways on which a table or other machine tool part is mounted for reciprocationor other sliding movement. I Another, object of the invention' is to improve the lubricating facilities for machine tool4 slides whereby a preponderance of lubricant lcan be distributed over the vslide or ways in such quantities as'to flood the ways so that they will beV substantially submerged for all practical purposes.

With these and other objects in view, the invention will be more readily understood uponA reference to the accompanying drawings which have been selected for the purpose of illustrating the application of the invention.

` In said drawings, Figure 1 is a view in perspective of a portion of a milling machine table :1nd bed, showing an application of the inven- Figure 2 is avview in cross section of a milling machine table and bed with the invention applied thereto; F1riigureSisasectiontakenontheline 3-3,

2; Y Figure 4 is a detail view in section. Figure 5 is av detail.view in` perspective and 'partly in section; and f Figure 6 is a detail view of another form of A:um drain- Referring now to the drawings in detail,5repre sents va milling machine bed upon which the table l 6 is mounted for reciprocal movement. The bed 5, to accommodate the table for such reciprocal movement, is made with spaced parallel ways or slides 'I and 8 each of which being formed at Vthe bottom of a trough-like structure. At the end of each of these troughs are pans 9 and 10 which are deeper than the troughs. Slidably mounted-in these troughs Aare -the ways ll and 12 of the table 6, suitable gibbing 13 being provided for one of the troughs as shown.

Each of the table ways 11 and 12 is made with a closed ended "lubricant distributing reservoir 14 and a shoe i5 made of bronze, brass or other material suitable for the purpose, is dove-tailed upon-'the bottom of the table ways. These shoes becomev the contact surface'on the table ways which slide.- along the bed ways 7 and 8 and in intimate contact therewith, and'itis these contacting surfaces, which the lubricating facilities provided, serve. Iii Order to supply a preponderance of lubrlf (ci. m-m 'f cant to these contacting surfaces in sui'ilcient quantity so that they will always be flooded and submerged, the shoes l5 are each formed with a series of lubricant supply ducts 16 at spaced intervals inthe length of the shoes. The'se d ucts 16 communicate with the distributing reservoirs 14 and terminate in wiping relation with the bed ways 7 and 8. To better distribute thelubricant. the undersides of the shoes 15 are scored with distributing channels or grooves 17 which crisscross the undersides of the shoes and intersect at the ducts 16. In this way eachl duct is thus equipped with a cluster-like plurality of distributing grooves which extend diagonally across the surface of the shoes and up the side edges thereof as at 16'. By means of the grooves 16' in the edges of the shoes, suiliclent lubricant is directed to the sides of the ways to lubricate the same. In this connection these edge grooves 16' communicate with the clearance spaces 16. Felt pads '|30' are also inset in the clamps 30 to absorb the lubricant forced into the clearance spaces 16', and these pads serve to keep the top side of the bevels wet with lubricant. On the opposite or straight side of the ways the lubricant will be forced between the contacting side surfaces in sufficient` quantity to assure the desired lubrication.

lg'he distributing reservoirs 14 serve in the ca- Apacity of sub-sources of supply for the lubricant and they are in turn supplied with lubricant in sufdcient quantity to keep them completely lled and under pressure from a main source of supply comprising the sump-like receptacle 18. From this sump-like receptacle, the lubricant is pumped .into the distributing reservoirs 14 by a pump 19 which has an intake 20 terminating adjacent the bottom of the sump 18, and an outlet V21 lwhich is connected with a pipe 22. The pipe 22 is equipped with an L-iltting 23 to supply a branch pipe 24 leading to one of the reservoirs 14; and the other pipe section 25 which joints the L-23 leads-to the other reservoir. The ends of these pipes 24 and 25 are preferably threaded as at 26 and 27 intoopenings formedin they thickness of the b'ed ways '1 and 8 so as to establish a communication with the bearing surfaces on the ways. These openings,y one for each of the ways 7 and 8, are preferably formed interme` diate the ends of the ways/and arealigned with the distributing ducts 16 so that as the table reciprocates, the ducts 16 will successively register with these openings and 'make and break a regis-- tering communication between the reservoirs .14

and the supply pipes 24 and 25. Since the pump 19 is running continuously, there is always a head of lubricant under pressure in the pipes 24 and 25, and each time one of thel ducts registers with the openings in the bed ways, a quantity of lubricant will be forced under pressure into 'the 'distributing reservoirs 14.A In this way, the discapacity of these pipes 28 can be predetermined v so as to maintain the desired lubricant level on the Ways and in the pans 9 and 10; consequently,

not only are the supporting surfaces of the ways thoroughly lubricated, but also the sides of the troughs 7 and 8 where the table ways 11 and 12 l contact are also thus lubricated.

If desirable, the return pipes 28 may communicate with the pans 9 and 10 at a height as shown in Fig. 6 to maintain a desired level on the ways. Ii this is resorted to, it will not be necessary to reckon their return capacity.

Tm addition tc 'the giclcing 13, the Ways are also equipped with clamps and :lo which are of beveled s sans l moe clamps a @Ming spaces 353 open at under' the table. These ie coolant to over sides of the tabi and allor new o the par l At., ion is ca. d to the tact, since the bed a e formed by machining the material from which the bed is cast since the under side of the table ways are equipped with a shoe of a different metal, such as brass or bronze, there are two different metals bearing against each other, which of course, goes to make up a desirable quality of bearing. Furthermore, since the contacting surfaces of these two metalsare constantly being flooded, any particles which may get on the bearing surfaces quickly be washed away as the table reciprocates. l suit# able filter may be installed in the lubricant supplir so that clean oil will be supplied to the ways at all tiries.v

En addition tc the foregoing features, atten= tion is also called to the details of construction Yoi the bed 5. For all practical purposes, the bed 5 comprises a one-piece casting having a base with side walls merging into a relatively thiol; web portion, on ,one side of which are the cooling iiuid collecting troughs 32 and 33, and on the other side are the trough- like Ways 7 and 8. Connecting the trough-like ways 'l and 8 is an `intermediate center depression which provides ample clearance for the rack 36. The design of this bed provides a very compact `arrangement for the diierent structural parts which make up the whole. y

Having thus described and shown an embodiment of this invention, what I claim and desire to secure by Letters Patent of the United States 1. A machine tool slide construction and lu-l bricator therefor, comprising a trough-like slide on one machine part having an opening in the tablish a communication between the reservoir and the ways to be lubricated, said openings also successively establishing a communication between the reservoir and the opening in the troughs like slide when the slidably mounted Ways slide in the trough-like ways; whereby the reservoir is intermittently supplied with lubricant.

2. In a machine tool, the combination of a plurality of slides, one of which is supported by another, a lubricant distributing reservoir in one of said slides, a slide shoe enclosing said raser7s voir having a plurality of lubricant ducts in its thickness for distributing `lubricant to said slides, and means for keeping said reservoir filled with lubricant under pressure.

3. 1n a machine tool, the combination of a bed and table, slides on the bed and ways on the table to slide' on said bed slides,v and means for the contacting bearing surfaces between the slides and Ways, compris ing, a forced iced lubricant supply including branch. pipes, each branch communicating with opening fori'n i in the thickness of each. bed ottoni each of the table enclosing a lubricant dls= armed in 'the ways and said the te l rooa"ono successively regis c in with the openings brisant into raser lubricant supply and the reservoirs the contacting bearing surfaces bet. on ne slides and ways through the openings shoes.-

fi. Means for lubricating the slide etween. chine tooi parte, comprising a lubricant reses voir inane of said parts having a series of lun brisant discharge ducts in open communication.

with the slide, a vsource of lubricant supply under pressure, comprising a delivery pipe tei iinate ing with an open end in said slide; whereby the delivery ducts or" the reservoir will successively register Awith said delivery pipe and ntain a gli supply oi? lubricant in said reservoiriinder preswhich a pipe returns the lubricant collected in the pan to the source of lubricant supply.

6. A machine tool slide construction and lubricator therefor, comprising ways on one machine part having an opening in the thickness thereof in communication with a source of lubricant supply, ways on another machine part mounted to' slide on said first named ways, a lubricant distributing reservoir in said second named machine part having a series of openings communicating with the Ways on said rst named machine part to establish communication between said reservoir and the ways on said first named machine part, said openings also successively establishing a communication with said source of lubricating supply when the second named machine part slides; whereby the reservoir is intermittently supplied with lubricant.

'7. In a machine tool organimticn, the combination of a support providing an elongated guideway, means providing a source o! lubricating iluid under pressurecommunicating with an opening in said guideway, a reciprocable member slidable along said guideway and closing said` opening, and a reservoir in said member communi-.- cating with a port opening toward said guideway and positioned to register with said opening in' B. In a machine tool organization, the combi' nation of a support providing an elongated guideway. means providing a source of lubricating fluid under pressure communicating lwith an opening in said guideway, a reciprocable member slidable in said gluideway and closing said opening, a reservoir 'in said member communicating with a port opening toward said guideway and positionedtoregisterwithsaidopeninginatleast one-position oi' the member whereby. to permit fluid from said'souree to ilow into the reservoir, and a plurality of ducts spaced along said member and establishing communication with said reservoir and the surface of said guideway for distributing the duid to the latter.

JOHN R. JOHNSON.

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