US2571559A - Tool post - Google Patents

Description

Patented Oct. 16, 1951 UNITED STAT ES btir GEFICE 2,571,559.l Y v Tool. Posr Taeitusw. Gaillard, Baldwin, NT Y. Application August 1i5, 194.7. serial No. 768,848Y

1. claim.

Thisinvention relates. to new and useful improvements inv means for adjusting tools in various positions inftool posts.

An object of the invention isto. provide a simple,.eff`1cient,` durable,- and easily operated device whereby the position of a tool on a post may be readilyv variedover a Wide rangeY of longitudinal and Aangular positions.

A furthery object is tolprovide; a construction.

whereby the tool adjustments mayY be made quickly and with a highdegree of fineness and accuracy and without any special skill on the part of the operator.

Further and more specic objects, features, and advantages will more clearly appear from the detailed specification hereinafter set forth especially when taken in connection with the accompanying drawings which illustrate present preferred forms which the" invention may assume and which form part of the specification. j

In brief and general terms, the invention is related to a tool post of the usual type which generally has a vertical slot therein. Related' to thejslot and the post Vis a seat having a curved recess. in which is seated the curved lower face of anadjustable shoe. On the Atop of the shoe rests atool supporting bar, andon top of that a cam block or element which` may be slid back and forth slightly on the bar. Manual means is provided to move the shoe on its curved seat to vary the-slope of theupper face of it and thereby to adjust the slope of the tool shaft. After the proper slope is achieved the cam block is moved by manual means to press down on the bar and jam it in place.

More particularly the shoe is moved either by hand or by means of a threaded shaft connected to one end of the shoe and operated by a hand wheel to obtain fine adjustments. The cam block is moved by engagement' with a pivoted arm flxed at one end to the post and resting in a notch in the block at the other end. A threaded shaft is connected to the block and the shaft is moved by turning a threaded hand wheel or by oscillating a hand lever adapted to engage the wheel to turn it.

The present preferred form which the invention may assume is illustrated in the drawings, of which,

Fig. 1 is an elevation of the tool post construction with certain portions broken away;

Fig. 2 is a plan view of the device;

Fig. 3 is a vertical section taken on the line 3--3 of Fig. 2;

Fig. 4 is a vertical section taken on the line 4-4 of Fig. 2; and,

(onse-3.7)

justing shoe I5 having a curved lower surface resting in the concavity of the'plate I4 and a flat upper surface on which rests a tool supporting' bar I6.

On the outer endv ofl the bar I6 are disposed Wellknown clamping elements I"I and I8 between end`A 22, resting in a cavity or recess 23 on they uppersurface of a cam block or elementl 24;

which: is clamped a tool' I9. In order to clamp the.i bar I5 in position on the shoe I5 there is provided anV arm 29 pivoted at the top of' theV postfslot on a pin 2 I- and having its lower curved- W-hich is adapted to be slid along the surface of the bar I6. An adjusting rod 25 is connected to the rear of' cam block 2A and is threaded at 2B on its outer portion andis guided` throughxa bore in a strapZ-'I slidably embracing the post Ill. This bore isy of suiciently large diameter greaterr than that of the rod, as shown, to permit a certainv ample amountv of lateral axial movement of.

the rod with-respect to the strap thus preventing binding as the' shoe I5 may be angularly adjusted. A hand wheel 28 interiorly threaded is mounted on this portion of the rod 25 and as it is turned it tends to move the rod axially in one direction or the other and thus slide the cam block 24 along the top of the bar I5. This movement Will either tighten or loosen the pressure between the block 2li and the bar so as to hold the shaft firmly in any adjusted position.

The hand wheel 28 has notches 29 around its periphery which are engaged by a pin 39 projecting laterally from a hand lever 3l which is at its lower end slotted at 32 to pass around a sleeve 33 fixed to strap 21. In the slot 32 beneath the sleeve 33 is a spring 34 to resist the axial movement of the lever 3| to lift the pin 30 out of a notch 29. It will be clear that the lever may be used to turn the hand wheel 28 instead of the hand of the operator. It will thus be clear that by turning the hand wheel 28 by hand or by the intermediary of the lever 3| the shaft 25 is longitudinally moved to slide the cam block 24 along the top of the tool bar I6 and press it against said bar due to the camming action of the pivoted arm 20. Therefore the tool bar may be easily,

quickly and firmly adjusted in any desired set position as to its length adjustment.

Now as to the angular adjustment of the tool bar I6, reference is had to shoe I5 which has a curved bottom resting in a similarly curved cavity or seat on the bottom of the tool post preferably the ring plate I4. It is clear that as the shoe is moved backward or forward, the slope of its upper face will be altered and will therefore alter the slope of anything resting on it which in this case is the tool bar I6. In order to so move the shoe in the simplest form of the device I provide lug 35 on top of a laterally disposed block 36 connected to one end of the shoe as seen in Fig. 5. In this case the adjustment is simple and inexpensive. However, this adjustment is not so iine or accurate as might be desired under certain circumstances so the form of adjustment shown in Fig. 3,is available. This consists of an upright pin or lball-headed stud 31 projecting universally into the end of a casing 38 on the end of a threaded shaft 39. This shaft threadably engages a sleeve 40 which is rotatably mounted in a bore in a block 4I and the sleeve has a hand wheel 42 connected to one end thereof. By turning the wheel 42 the sleeve is turned and moves the shaft 39 axially and thus moves the casing 38 and with it the shoe so as to adjust the slope of the shoe on its curved seat. The block 4I is formed of two plates held together by screws 43 and one of these plates has a stud 44 projected into a bore in the side of the post I with an annular groove 45 therein to receive a short pin 46 which holds the stud in the bore but permits the slight rotation of the stud caused by the slight change in the angle of the shaft 39 as the shoe I is adjusted. Thereby the turning of the wheel 42 permits very ne adjustments of the shoe and therefore very ne adjustments of the tool bar I6. These various adjustments are easily and quickly achieved to a fine degree and permit wide variations in the position and angularity of the tool to be made.

In Fig. 4 is shown a simple construction whereby the device or parts thereof may be lubricated. The end of pin 2I extends through the post I0 and is hollowed out as at 41. Over the end of the shaft or pin 2l is tight-fitted a casing 48 having a chamber 49. An oil filler pipe 5|] extends into the chamber 49 and through the hollow end 41 of the pin 2| and has a lateral passage 5I con- Y limited to such details and forms since many changes and modifications may be made in the invention in its broadest aspects. Hence itis desired to cover any and all forms and modifications of the invention which may come within the language or scope of the appended claim.

I claim:

In a device of the class described. a post, a shoe associated therewith and having a lower curved surface, a seat on which the shoe rests and having a similarly curved surface, a stud on one end of the shoe, a threaded member loosely connected at one end to said stud, a, block connected to the post and having a rotatable threaded sleeve through which said threaded member extends, and a wheel on the sleeve whereby turning the wheel will longitudinally move the threaded member to move the shoe longitudinally of its seat to alter the slope of the shoe.

TACITUS WM. GAILLARD.

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

UNITED STATES PATENTS Number Name Date 880,948 Wilhelm Mar. 3, 1908 1,032,382 Davenport July 16, 1912 1,475,257 Bottone Nov. 27, 1923 1,526,849v Grabill Feb. 17, 1925 1,571,363 Barker Feb. 2, 1926 2,154,496 Darash Apr. 18, 1939 2,205,879 Fausnaugh June 25, 1940 2,390,022 Wood Nov. 27, 1945 2,458,740 Schafer Jan. 11, 1949 FOREIGN PATENTS Number Country Date 13,699 Great Britain 1913

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