US1921754A

US1921754A - Die head

Info

Publication number: US1921754A
Application number: US519093A
Authority: US
Inventors: Ralph E Hyde
Original assignee: John Oster Manufacturing Co
Current assignee: John Oster Manufacturing Co
Priority date: 1931-02-28
Filing date: 1931-02-28
Publication date: 1933-08-08
Anticipated expiration: 1950-08-08

Description

R. E. HYDE Aug. 8, 1933.

DIE HEAD Filed Feb. 28 1931 2 Sheets-Sheet 1 xx INVENTOR.

Ra 1 2); 6 flyde 0 r a Way/ w ATTORNEY. ,3;

Aug. 8, 1933. R E. H 1,921,754

DIE HEAD Filed Feb. 28, 1931 2 Sheets-Sheet 2 INVENTOR.

, Ralf/1 6. flyde BY A TTORNEY. a,

Patented Aug. 8, 1933 V 1,921,754

UNITED STATES PATENT OFFICE;

1,921,754 DIE HEAD Ralph E. Hyde, Cleveland, Ohio, assignor to The I Oster Manufacturing Company, Cleveland,

Ohio, a Corporation of Ohio Application February 28, 1931. Serial No. 519.093 4 Claims. (01. 10-96) The present invention relates to, a die-head, to slide in the slots The shank 7 'fits snugly and particularly to a die-head of the. general in a hole. 6 inj the rear edge'of the chaser body type disclosed in the patent to Oster No. 5, as shown in Fig. 2; Thechasers flarehere 1,044,808. shown as fitted with detachable cutter blades 5',

Among the objects of the present invention The grooves 6 are formed in an annular cam' are to provide a die-head of the character deplate 8 mounted on the outersurface of. the die scribed which has improved features making for carrier 2, concentric therewith, and engaging increased accuracy, eiiiciency and readiness .of against annular rabbets in the rear face of the application and removal. Another object is the flange-like member 3. This cam plate 8 is kept provision of a die-head particularly adapted for from sliding rearwardly by a fiat-ring 9 suitably 6 use on a rotating machine, particularly of the fastened to the rear outer edge of the outlet 3. semi-automatic or automatic type. It will thus be seen that the plate 8 is capable Further objects of the invention will appear ofrotation around the die carrier 2, butnot of from the following description. translation therealong.' An arcuate plate 10" is 1 It is to be understood that thedescription and fi t d by a ridge a ro v other Suitable 7 the accompanying drawings are illustrative of ar Cohehtric W t 0am plate preferred means of accomplishing the purposes of to a portion of the cam plate'B, being secured, the invention, but that these are tolbe taken thereto by means of a nut 12 and stud 12'. as examples and not as limitations. The invenarcllatefilot also concentric W the 89 1 tion is'capable of being applied in a variety or p ate, pe relative movement e l o mechanical forms, the inventive scope being inp a s 0 a a y-particular setting b i d dicated by the claims, by tightening the nut 12. Suitable index marks In the drawings, Fig. 1 is a frontelevation of s h a 1 n th pl 8 n 0 p mi any the improved die-head, certain features being 'predeterminedsetting between these plates to be 5. omitted for the sake ,of simplicity; Fig. 2 is a q y and accurately made- 3 central vertical longitudinal section through the T p at 10 is of L Shapedcross section as die-head, the back plate being omitted; Fig, 3 seen in Fig. 2, with the foot .of the L extending illustrates a detail of the adjusting means; Fig. a Short stance. above the top of die carrier 4 is a perspective view of the chaser pin shown h l p ted therefrom bya fiat shifter ring;

: in Fig. 2; Fig. 5 illustrates a cam slot used in 5. A ca ve 6 nds d a al y througnggf the shifter ring; Fig. 6 is a front view correspondthe under face of the plate lolchangihg to an g ing to Fig. 1 but illustrating a modified construcaxial direction for a. short distance near. the tion; Fig. 7 is a view on the line 7- '7 of Fig. 6; from end h 3 -'5 to prevent rota-, Fig. 8 is a partial front view looking in the ditiOhi the 0am P "when the chasers are view of the setting means on a larger scale; Fig. Of a Stud 18 g d n-the tip n the ring 9 is a section through the shifter ring on the line 15. The stud and groove may conveniently have 9--9 of Fig. '7; and Fig.10 is a partial plan view a ball-and-notch detent. to maintainthe organialso on the line-9-9 of Fig. 7 but .With the shifter zation in position, all as indicated in Fig. 2.

rin e v d d pa t of thodie i b o The shifter ring 15 is keyed on the outside of away. 7 the carrier 2, t'hus being movable axially but.not- Referring W to Figs- 1, 2 and 3, the P circumferentially of the carrier, thus moving the l 0115 is seen to cfmsist of a Q 1 f stud'l8 'circumferentially"a distance equal to the tubular die Garner 2 through Whlch the pipe 9 circumferential component of the groove 16, and other cylindrical work to be threaded'passes in l v th 1 er This die carrier ha a flange so opening or closing the Chasers eusua mann s a in ,1 like enlargement 3 at the rear within suitable To move the rmg 15 ax a yiialong the am Garner recesses 4 of which chasers 5 are carried, being a fsu1tab.1g F -P p movable on radial lines by the action of spiral nVen 1ent arrangement a,shlfter e fi cam grooves 6 which engage pins 7 on the chasers Gated m l 2 by n s g- 105 to move the latter. The pins 7, as best shown in ,olrcumferentlal groove asrshPwn 1n the 3 15, Fig. 4, consist of a cylindrical shank 7 a short and o e a 20. By m o som h enlarged cylindrical head l flconcentric upon one Chasers yb moved from then 111111051? h end of the shank, and a guide fin '7 curved ,on outmost pos tio ahy given Setting W ut it the, radiusof the slots 6 and of proper thickness bein sa y Q S op. h ta fimfi t q r. r

. rection of the arrow 8, Fig. '1, showing a front o s s groove isentered y the upp n 0'- step by step by suitable mechanism, not shown.

The above mechanism is a usual attachment for die heads and is not in itself a feature of the. present invention.

With reference to Figs. 6 to 10 inclusive, the apparatus may be modified to comprise a tubular die carrier 32 having a ring-shaped cam plate 33 mounted upon the front end of 32- and concentrically with respect to the axis of the opening through 32. This cam is being held in place by an annular cover plate 34. The cover plate includes four quadrantally placed radial channels35 which form guides for the chasers 36. Inwardly directed arcuate fins 37 are formed on the front face of the cam plate 33 and engage slots 38in the rear edges of the chasers, whereby rotation of the cam plate moves the chasers in and out radially.

Rotation of the cam plate is accomplished by a stud 4O upstanding from an arcuate plate 41 which is secured by a bolt 42, clamping bushing 43 and nut44 to the cam. ring 33. The plate 41 has a ridge and groove sliding contact with the cam ring 33 and may bemoved circuinferentially with respect therewith when the clamping elements'43 and 44 are loosened. The extent of this travel is. governed bythe length of an arcuate slot 45 in the plate 41, the relationship being substantially the same as that existing between the cam ring 8 and the plate 10 in Fig. 2.

The upstanding stud 49 projects througha slot 46 in the outer surface 47 of the die carrier 32,

the die carrier being suitably enlarged as shown in theupper part ofFig. 2 to receive the adjusting mechanism just described. The clamping bushing 43 has an enlarged head 48 which islevel at the top with the outer rear surface 47. This head :48 carries an index mark 49, Fig. 10, which may be brought opposite any one of a series of graduations 50 on the upper surface 47. When the ring 52 ismoved to the right in Fig. 7, the graduations 50 are exposed.

Motion of-the cam plate to move the chasers 36 in or out after any desired adjustment has been set, is accomplished by a shifter ring 52 movable axially along the die carrier 32 but keyed thereto as at 53 preventing relative rotation. This shifter ring is inwardly grooved diagonally as at 54, the groove 54-having a short axially directed section55 at one end, into which groove the stud 40 projects. Axial movement of the ring 52 thus causes a limited circumferential movementof the stud 40 thus moving the cam plate. The stud '49 may conveniently be provided with a ball-and-springdetent cooperthat the movement of a shifter yoke opens or closes the chasers within the predetermined setting limits. By the use of a ring type of shifter yoke it is possible to open or close the chasers while the entire assembly is rotatingso that these forms of head are particularly adapted to semi automatic or automatic machines, it being-necessary to stop the machine only for changes in adjustment.

It will be understood that the scope of the invention is not limited to the two forms herein shown and described but that the principles may be embodied in other mechanisms, the scope of the invention being determined by the following claims.

What I claim is:

1. In combination with a die head, a longitudinally disposed body, an annular cover plate on one end of said body, radially disposed. hollow ribs on said cover plate, chasers reciprocably mounted within said ribs, cam engaging elements in said chasers, a cam ring mounted rotatably within the limits of said body and behind said cover plate, means for preventing axial motion of said cam ring, a concentric arcuate plate mounted on said cam ring, means for selectively clamping said arcuate plate fast to said cam ring or for permitting relative circumferential motion between the two, a shifter ring mounted upon and between the ends of said longitudinal body,

key connections between said longitudinal body and said shifter ring permitting axial but preventing circumferential relative motion between the two, cam connections between said arcuaite plate and said shifter ring, said cam connections having both axial and circumferential, components.

2. A die head comprising in combination a laterally extending body, an annular cam plate corresponding to the cam surfaces on said'cam ring slot.

3. A die head comprising in combination a tubular body, 'a rotatable cam plate within the axial dimension of said body, chasers radially movable by said cam plate, a radial projection upon said cam plate through the side of said body, and a shifter ring surrounding said body axially movable thereon but not therebeyond, an inward cam groove onsaid ring engaging with said radial projection, whereby movement of said ring axially rotates said cam plate.

4. A die'head'compr-ising in combination a tubular body, a rotatable cam plate within the axial dimension of said body, chasers radially movableby saidcam plate, a radial projection upon said cam plate through the sideofsaid body, means carried by said cam plate housed within and projecting axially rearwardly of said body for adjusting said radial projection, and a shifter ring surrounding said bodyaxially movable thereon but not therebeyond, an inward cam groove on said ring engaging with said radial projection, whereby movement of said ring axially rotates said cam-plate.

1 RALPH E. "HYDE.