US2194729A - Lathe carriage - Google Patents

Description

@ 26, 1940. c. A. WILLS LATHE CARRIAGE Filed April '7', 1959 unuunnnnnuunnunnnun INVENTOR. CHARLES A.WILLs. BY

ATTORNEY.

Patented Mar. 26, 1940 UNl'lE STATESPATENT OFFlCE Charles A. Wills, Omaha, Nebr.

Application April 7, 1939, Serial No. 266,510

3 Claims.

This invention relates generally to lathes and particularly to carriages therefor. Generally it is diflicult if not impossible to do milling work on the ordinary lathe without special attachmerits and usually the vertical movement of said attachments are relatively limited. Tool posts in the ordinary lathe are of such character that considerable difficulty is encountered in adjusting the cutting tool.

device of this character whereby cutting tools 'may be more accurately set and more quickly adjusted for proper cutting.

A further object of the invention is to provide a device of this character having a rest base or table that is rotatable and adapted to be held in rotatable positions of adjustment.

A still further object of the invention is to provide a device of this character of simple and durable construction and of relatively low manufacturing cost.

Numerous other objects and advantages of the invention will be apparent as it is better understood from the following detailed description, which, taken in connection with the accompanying drawing, discloses a preferred embodiment thereof.

Referring more particularly to the drawing, Figure 1 is a side elevation of a lathe having my carriage operably mounted therein.

Figure 2 is a plan view of the carriage.

Figure 3 is a vertical section through the carriage taken on line 3-'3 of Figure 2. i

Figure 4 is a sectional view taken on line 44 of Figure 3.

Figure 5 is an enlarged vertical section through carriage taken on line 5-5 of Figure 1.

Figure 6 is a sectional view taken on line 6-6 of Figure 5.

Referring more particularly to the drawing, the lathe includes a bed having tracks or guides to. The carriage is operably mounted to the bed, said carriage having a base portion II with grooves 2 for reception of tracks Ill of the bed. A depending hollow housing It! is attached to the base by means of bolts M. Within the housing is is a sliding member I 5 adapted for vertical movement therein, said member l5 having diametrically opposed guides IE adapted to be received in interior grooves in the housing to prevent rotation of the member 15 in said housing I3. The lower end of member I5 is closed at I! which is provided with a central opening centrally disposed therein. An adjustment screw 48 is received in said opening and is journaled adjacent the lower end in aplate l9 screwed to the lower end of the housing 13 by bolts 20. A collar 2! is secured to the lower end of screw l8 to retain same in operative position. A beveled gear 22 is screwed to the screw l8 adjacent the lower end and within the housing and is meshed with a second beveled gear 23 secured to a horizontal shaft 24 journaled in the casing. A collar 25 retains the shaft 24 against inward movement and said shaft 24 is provided with a crank 26 adjacent the outer end thereof. Rotation of shaft 24 by means of crank 26 effects turning of screw l8 through the beveled gears 22 and 23, for raising and lowering member 15. The upper end of member I5 is open and is adapted to receive a depending shaft like member 21which is formed integrally with base member 28. A shaft like member 21 is rotatable in member l5 and is adapted to be locked in rotatable positions by a bolt 29. A base member 28 is substantially U-shaped in cross section and is provided adjacent the free ends thereof with outwardly extending longitudinal flanges 30 which provide track means for rest base or table 3|, said table 3! having depending side portions 32 which are longitudinally grooved to receive the flanges 30, said table being adapted for horizontal movement on the base member 28. Base member 28 is provided with an upturned end portion. 33 in which is journaled one end of a horizontal adjustment screw 34 said screw extending inwardly of the base member 28 and is operably received in an opening in depending end portion 35 of the table. A crank 36 is attached to the outwardly extending free end of screw 34 for turning same. The table is provided with threaded openings 31 whereby a tool post 38 or other devices may be attached thereto. The carriage also includes an apron 39 of conventional type with a handwheel 40 for feed to the carriage and half-nut means not shown for power feed, said half-nuts being operated by half-nut lever4l, said half-nuts being adapted for engagement with lead screw 42. The lathe also includes a tailstock center 43 and a headstock spindle 44. In using my invention for ordinary cutting purposes, the cutting tool is secured in the tool box 38 and the table 3! raised or lowered to bring the cutting surface of the cutting tool into a horizontal plane through the axis of the tailstock and headstock piece. In this manner the cutting tool may be more easily and quickly and accurately set than heretofore. The table 3i may be aligned at right angles to the axis of the tailstook and headstock by abutting the side of same against face plate and tightening bolt 2%. Any of the angular adjustment relative to the face plate may be effected by loosening bolt 29 and rotating shaft like member 21 in member l5 and then tightening bolt 29 to retain same in position. Vertical adjustment of the table is eifected by rotation of screw [8 and horizontal adjustment of the table is effected by means of screw 34. Suitable devices for holding material to be worked on may be attached to the table.

It is thought that the invention and many of its attendant advantages will be understood from the foregoing description and it will be apparent that various changes may be made "in the form, construction and arrangement of the various parts without departing from the spirit and scope of the invention or sacrificing all of its material advantages, the form hereinbefore described being merely a preferred embodiment thereof.

Having thus described my invention, what I claim is:

l. A lathe carriage having a base with grooves adapted to receive the guides of a lathe bed, a depending housing secured to the base and havin longitudinally extending interior grooves, a slidable member within the housing, longitudinally extending flanges on the slidable member, said flanges being received in the grooves of the housing, screw means for moving the slidable member vertically in the housing, a horizontal :base member rotatably mounted in the slidable member, means for securing the horizontal base member in rotatable positions, said. base members having longitudinal grooves therein, a horizontal table operably mounted in the grooves of the horizontal base member, said table having means for attachment of a tool post and the like to the same, and screw means for moving the table horizontally in the horizontal base member and longitudinally thereof.

2. A lathe carriage having a base operably associated with a lathe bed, a depending housing screwed to the base and having longitudinally extending interior grooves, a slidable member within the housing having longitudinally ex- .tending flanges received in the grooves of said housing, screw means for moving the slidable member vertically in the housing, a horizontal base member having longitudinal grooves therein, a horizontal table operably mounted in the grooves of the horizontal base member, said table having means for attachment of a tool post and the like to same, and screw means for moving the table horizontally in the horizontal base member and longitudinally thereof.

3. A lathe carriage having a base operably mounted in a lathe bed, a depending housing screwed to the base and having longitudinally extending interior grooves, a slidable member Within the housing having longitudinally extending flanges received in the grooves of said housing, screw means for moving the slidable member vertically in the housing, a horizontal base member having longitudinal grooves therein, and a horizontal. table operably mounted in the grooves in the horizontal base member, and means for operably moving the table in the horizontal base member.

CHARLES A. WILLS.

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