US909300A - Feeding device for machine-tools and the like. - Google Patents

Description

C. A. HIRTH. FEEDING DEVICE FOR MACHINE TOOLS AND THE LIKE. APPLICATION rum) DEC. 10, 1901'.

909,300, Patented Jan. 12, 1909.

stone d or some other operating part.

such as t e wheel 1.

UNITED STATES PATENT OFFICE.

CARL Al BERT HIlt'IH, ()F CANNSTATT, NEAR S'IU'ITGABT, GERMANY.

FEEDING DEVICE FOR MACHINE-TOOLS AND THE m.

Specification 0t Lettem Patent.

Patented Jan. 12, 1969 Application filed December 10, 1907. Serial No. 405,907.

1 on one side with an inclinedsurface l, the

To all whom it may concern:

Be it known that I, CARL ALBERT Hm'rn,

a subject of the Germnr l'hn 'ieror, residing at Uannstatt, near Stuttgart, brrmany, have invented a certain new and us. vul improve" ment in Feeding Devices for Machine-Tools and the Like, of which the following is a specification.

This invention relates to a certain im provement connected with the feed devices i of machine tools and the like.

In the present feed devices for holders in machine tools it is usual to em ploy a screw spindle with square or taper hreads, the

. rotation of which advances or draws back tools and the like in which a reliable adjustment and extreme accuracy are obtained by em ,loying for the adjustment of the holder sli e a wheel or the like provided with incline surfaces which are brought into contact with a spring or weight-controlled holder or a lug of the same on the one side, and rest against an abutment or the frame on the other, such abutmentand the movable part being located substantially o posite to each other so that the interposed Wheel or the like transmits the ressure of the slide or 3 holder dircctly'tot c frame and thus any possibility of bending or yielding of the wheel or the like is obviated.

In the accompanying drawings: One form of the device'is shown in Figure l which is a section of a holder, while F igs. 2 and 3 show a modification in different positions.

Referring to Fig. l: On the casing a is adjustahly mounted the holder slide b which carries a grinding spindle c with a g 'Ii pd ie slide b is connected, by means of the rope e passing over a pulley f, withthe weight g, under the influenceof which the lug h of the slide is ressed' against an adjustable part This wheel i is mounted in the casing a on a stud 1;, and is provided resent invention is aother side being fiat and restin against an abutment. m on the casing a. whic is situated as is seen near the rim of the wheel. wheel i has gear teeth n on its rim and is operated by a hand wheel 0 and pinion p.

As the adjusting wheel 2' is rotated the holder slide 1) is either pushed forward by the inclined surface 1 or forced back by the weight g. In this. way,the entire pressure on the adjusting wheel is taken upl by the i casing, so that inaccuracies due to t nding or tilting of the wheel are precluded. inaccuracies due to the presence of ale. er of oil in lubricating, are also obviated, ecause when suitable materials are used for the adjusting wheel and parts in contact with same, no lubrication is required.

- The sloping surface of the Wheel can of UQUIISQ be repeated more than once in the (II'C adjusting part or wheel. In this case it is in the form of a plate, disk or wheel t bevplaced on a second eled on one side and plate disk or wheel '8 also inclined on one suracc but plane on the other. The plate or disk 1! which rests with its front inclined surface against the lug h of the holder, can be rotated on a stud uof the plate or disk 3, and held fast in any desired. position by the nut 12. The plate or disk 8 is fixed on the shaft k and rests with its rear or plane face against the stop m of the machine frame or" casing. The shaft can be turned from the gear n. By turning the plate or disk t in relation to the plate or disk 8, the extent to which the holder will be moved when the shaft is is turned canbe regulated at will.

In the position shown in Fig. 2, the incline on the plate or disk t counteracts the incline on the plate or disk s, and no feed motion is in'ipartcd when the shaft k is turned, In the position shown in Fig. 3, the inclined surfaces of the two plates or disl's act in conjunction, and a hall turn of the ear n/iinarts to the log it the maximun eed stroke,

rom hto the position It shown in dotted lines Fig. 3. Any desired intermediate stroke between nil and the maximum stroke shown in Fig. 3, can be imparted by relativel ad'usting the plates or disks. at claim is 1. In a machine of the class described,'tbe combination of a' slide, a stationary abut ment, and a cam movable relative to and Figs. 2 and 3 show a modification of the slide at a point opposite tea the surface ofthe said part that bears on the slide being inclined and contacting with the its point of contact the abutment, for the purpose, de-

scribed. V 3.- In a machine of the class described, the

combination of a slide having on one face a or stud, a stationary abutment arran%ed in line with said lug, and a cam movab e between and having its 0 pcqite faces bearin against said lug and a tment, whereb t e thrust of the slide'will e transmitted directly to the abutment and defamation of the cam preventerh- 4. In a machine of the class described, the

combination of a slide, a stationary abutment, a cam wheel having one surface engaging the slide near its periphery and its 0 posite surface t e same distance from the axis of the Wheel as the point of contact between the latter alkahd the slide, and means for turning the wheel.

5. Inimachine of the class described; the combination of a part carrying an inclined surface,means for adjusting such inclined surface on its carrying part, means for movengaging the abutment at mg said carrying part, a fixed abutment for such part on one side, and a part ada ted to abut against the inclined surface an to be moved by same, such fixed abutmentbeing located substantially opposite the part to be moved.

6. 111 a machine of the class described, the combination, of a part carrying an inclined surface and a plane surface, means for moving said part, a second art also having an inclined surface and a p ane surface, means for adjustably securing such two parts togather, a fixed abutment for the rear face of one of such parts and a part adapted to abut against the front surface of the other part and to be moved by same.

7. Inc machine of the class described, the combination of a disk having an inclined surface and a plane surface, means for moving such disk, :1 second disk also having an inclined surface and a plane surface, a stud and nut for adjustably securing one .disk to the other, a fixed abutment for the rear face of one of such arts, a movable holder and a part carried by such'holder adapted to abut against the front surface of the other part and to be moved by same.

In testimony whereof I have hereunto set my hand in thepresence of two subscribing witnesses.

CARL ALBERT BIRTH.

Witnesses OTTO GRAF, GUsTAv STEIN.

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