US1129020A

US1129020A - Reaming and tapping machine.

Info

Publication number: US1129020A
Application number: US64329811A
Authority: US
Inventors: John R Saylor
Original assignee: Individual
Current assignee: Individual
Priority date: 1911-08-10
Filing date: 1911-08-10
Publication date: 1915-02-16
Anticipated expiration: 1932-02-16

Description

-J.R.SAYL0R.. RE'AMING AND TAPPING MACHINE. APPLICATION FILED AUG. 10, 1911. 1 512mm@ Patented Feb.16,1915.

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REAMING AND TAPPING MACHINE. 4APPLICATION FILED AUG'. 10, 1911.-

Patented Feb. 16, 1915.

J. R. SAYLOR.

REAMING AND TAPPING MACHINE.

APFLIQATION FILED AUG.10, 1911.

'Patented Feb. 16, 191.5.

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I Application' filed August 10, 1911. ASerialNo. 643,298. i

T0 allfwhom it may concern:

.13e it known that 1, JOHN R. Samoa, a citizen of the United States, residing in Pottstown, county of Montgomery, 'State-.bt -Pennsylvania, have invented certain" m-aljwheh will be described hereafter.

\. is a side view o f my improved tapping machine; Fig. 2, 1s a front elevation; Fig. 3,v isan enlarged view, partly in section, illustrating the chuck for holding the work; Figl' 4, is a sectional view on the line a -a, Fig. 3; Fig. 5, is a view illustrating 'the chuck moved 'back to its full'extentV and in the open position; Fig. 6, is a view showing the handige-ver mechanism for operating.

the chuck Figa'?, isa sectional View on the g. .2; Fig. 8, is a. view, similar to F10'. 7, showing the exterior of. the bearings Jihr-the shaft; Fig. 9, is a sectional View on the line c-c, Fig. 7, and Fig. 10, is a view looking in the direction of the arrow d Fig. 1.

1 is the base of the' machine having a flange 2 and thisbase forms the receptacle for the lubricant, which is pumped back into 'the reservoir to be used over and over again.

3 are standards which support part of the overhead mechanism.

4 is an electric motor having a shatt 5, which is geared to'an intermediate shaft 6, through change gearin in an ordinary change gear box 7. This shaft is in turn geared to a horizontal shaft 8, having a pinion 9, which. meshes with the gear wheel able on this frame. 1n the present instance,

Ratchet-the pinions 14' and 15 hasteeth with which the teeth of the 'clutch sleeve 16 engage. This sleeve is moved intoengagement with either of the pinions by .the

shifter 'rod 17 having a head 18 on which is an arm '19 engaging the clutch sleeve.

The 'shifter rod 17 is actuated by mechanism,

"\ theifoiward end ofthe shaft 12 is a geazr wheel 20 shown by, dotted lines in Fig. 2, whichmeshes with the gear lwheels 21 on each of the' heads 22 in which are mounted the spindles 23. The gear wheels 21 are mounted on horizontal shafts 24, Fig. 7, and on the end of each shaft is a bevel pinion 25 meshing with'a bevel wheel 26 on a sleeve 2 7 through which the spindle 23 extends. The sleeve 27 is s lined to the spindle 23 sothat while t e s indle isV free to move lofigitudinally in t e sleeve it must turn-with itQ l rll`he sleeve 27 is secured to a ,clutch 28 which extends into arecess 29 inthe'frame of the head 22. The end of the spindle `is reduced, as shown in Fig. 7, and on the red, and has a'reduced portion. rl`he strength ot this Vclipis lessthan any other part of the mechanism so that in the event of 3amming` of the work, or the strain on the mechanism being such as to cause the parts to break, the clip will be the part whichmill break andthis clip which is inexpensive can lhe readily replaced when necessary.-

lin the present machine, it will-he noticed vthat the hea'ds`22 are mounted ona frame 34, rigidly secured to the standard 3 .and the several heads are longitudinally adiustthe trame hasbrackets 35 and the anges 36 fot the head 22 rest upon the brackets.

Theseanges are slotted for the reception 'et the studs 37, on which are the clamping nuts, securing Athe heads to the brackets,

4Fig. 8,' so that on releasing the nuts the heads.- can 'be moved in or out to a limited extent. Y v e 'E1n' order to allow the

gears

25 and 23 ire to always be in mesh, yI mount; on'the shaft 24 a sleeve 38, Fig. 7, `which 'carries-the gear wheel 21 .and this sleeve is l splined on the-shaft so that while the shaft can turn with the `sleeve it may be `moved longitudinally in the sleeve with the head 22. This adjustment is necessary in somev classes of work havingholes 'on 'offset centers, by making the heads adjustableI can `drilling heads, as the machine is adapte fori either tapping, reaming'or drilling.

standard 3 is a bracket 41, c arrying the I' chuck 42. The bracket 4ll isadapted to guides in the extensionA 40 and can be'ad- Justed by the set screw :43. The chuck 42 has a base plate 44, provided with an *under-` 4 cut or dove'tailxrib45, adapted to a trans# Ais limited by stops.

' verse groove in the bracket 41 so that' the l chuck can be shifted transversely. This baseplate is under-cut as at46', Fig. 4, and fitting this undercut portion lare the'iianges 47 of.-

the main frame 48 Aof the chuck. This frame has a fixed jaw 49 and arranged to slide in` au under-cut groove in the frame is a movable jaw 50. The movement ofthis jaw 50 'This jaw 50' has a threaded recess and adapted to the recess is a threaded hollow'sleeve `514. Mounted in the sleeve is a plunger 52. The outward movement'of the plunger is limited by a lscrew 53 and between the end of the plun er and the inner wall ofthe sleeve is a coi ed'.y spring 54 so that the spring acts as a ,cuslif f ion for the clampingk mechanism, after theA lay clamped between the workhas been rigid jaws. K

0n the end of the plunger .52 is 'pivoted a bell crank lever 55 and one arm of this bell crank lever is connected-'by link l56 'to 'a pivotpin 57 on thegframe 48. The other arm of the bell crankflever' carries a block 58, which is'adapted to-aslot 59 in a lever 60 pivoted at 61v to the-base 1.` The lever 60 inf' the present instance, isactuatedby fluidfunder A lever 1s a piston rod-.62, having apiston lder is supplied witljl fiuid un'der. pressure The oipe leads to the rear vend of ,-'th,e c vlin er andthe pipel 66 leads to the .for-

ward end of the cylinder and the 'valve is so arranged that it gcanl lbe turned to allow `lever to a position to 'close theljaws", and it j can also be moved into positonso as to allow -fiuid to'enter the" rear of the cylinder;

moving the lever to open the jawsfofthe pressure- -and connected to the is levertpivoted at 68 and I .this lever is connected by a rod 69 to an` this'rock vshaft is a slotted arm 73, which Y engages one arm of the bell crank lever 55.

. This construction is particularly adapted 'for` Mounted on a forward extension 40 of the use in light machines where the pressure exerted by hand is suflicient to the parts in the chuck. y

The shifter rod 17 is actuated from the of the worm wheel, in thev present instance,

isla disk 77 having a slot 78 in which` are adjustable blocks .79. These blocks can be of the disk.

Secured to the shaft 76, in the present instance, is an'arm 80, which is connected to Y theshifter rod 1'7" and this arm -is in lthe -pathof the blocks 79 on the disk 77. 0n the.

shaft is an arm 81, havin' a weight to bal ance the shifter mechanism. -\Vlien the y wormen the shaft `11 gtu rn's"the disk in one direction, one ofthe blocks on the disk will strike the 'arm' 8O and shift the clutch sleeve', throwing said sleeve `into mesh with the opposite gear; .reversing the movement 'of the'shaft 11j. The shaft will then turn fin` thereverse'directin until the'otherblock 79 'comesin contact with the arm when the sleeve will'be shifted so thatvtheshaft l1 has a rotary movement, first 'in one direc-A '.tion and thenin the other direction. This reverse, yrotary movement is communicated to all the spindles so that during the cutting .operation the spindles move in one direction and as the spindles lare"`re tracted they move i .in'the opposite direction.`

Then it is wished to shift the clutch by hand, the handle '82, mounted on the, ,for

.Ward end of jtheshaft 76,'is o erated,1 and y y as the shifter arm 8G is attache to the lshaft ythrough the valve.i64"`a'ndpipes 65v and 66.

justed to a'nypoint desired 'on the face ioo 765th'e clutch "can be 'throw'nvin gear-with either ofthe gear wheels I4 and 15 by the movement of thesaid hand lever.4 Thus,

'lower-If an elbow or ",l' or .cross is to be. threaded. -it .is placed between' the jaws of; 'thechuckf48 and thelhand lever 67 operated so as 'to cause the'jawsto close on the article and as the jaws close the" idle movement 'w'll izo.

lof any one particular type.

Abe taken up by the spring 54 within the head. rll`he movable jaw 50 is set by turning the head, so that it will properly clamp the work and as this machine is intended toI tap or ream a number of pieces which are of any one particular type. once being set, will readilyu clamp the pieces The cruck is moved forward by the operation of the pneumatic mechanism, so as to bring it in -alinement with the spindles 23'after the article is clamped between the jaws, and by moving the handle 82, the clutch sleeve 16 can be thrown into mesh withone of the gears, causing the spindle to turn forward and the master screw sleeve 30 will feed the spindle to the work. Hthere is a tap in 2. The combination of a spindle; a base;` -a chuck slidably mounted on the 'base and the spindle, the thread. of the tap will be ofv the same pitch as the master sleeve. The blocks 79 lare set on the` disk 77 soas to reverse the mechanism 'after the spindle is moved forward a certain distance and if a certain depthvof thread is required, theA block is set to that depth and the machine will automatically reverse itself, travelingback vto its starting position.

The machine in case of accident or other reasons can be stopped by moving the lever 82 at any time to the central position.

When the taps are clear of work the mechajaw; said bell-crank lever being pivotally connected close ,tothe jaw with an arm depending below said pivot; a .lever having a sliding .connection with the depending arm of the bell-crank-lever; and means foreperating said lever.

having a fixed and a mbvablejjaw; a bell crank lever and alink connecting the movable jaw with the body portion of the chuck; means for adjusting the movable'ja'w; yieldingmeans between the bell crank lever yand thesaid adjusting means a cylinder; a pist0n therein; means for controlling fluid undery pressure in the cylinder; 'a rod conne'cted to the piston.; a slotted lever pivotally n The chuck is connected to said rod;` and a block carried by the bell crank adapted to theslot.

3. In a tapping or reaming machine, the combination oi' a'spindle; means for driving thespindle; a sliding chuck for holding the Work a fixed' and a sliding jaw on the chuck; the lever mechanism for moving the sliding jaw toward and from -the xed jaw;

single actuating means for moving the slide into and out of line with the spindle and fixed jaw; and a stop for limiting the movement of the sliding chuck, the lever mechanisrn for operating 'the movable jaw retaining'the jaw in its closed position until-the chuck comes in contact with the stop and,

on the continued movement of the actuating .meansy the jaws of the clutch will be opened.

4. rl`he combination in a tapping or reaming machine, of aJ'spindle; means for driving the spindle; a base; a chuck slidably mounted on the'base and having a fined and a movable jaw; a 'stop to, limit the outward .movement of the chuck; a bell crank lever connecting the movable jaw with the body portion of the chuck; a lever for sliding the jaw on its base and for operating the bell for moving the movable jaw to and from the crank lever; a sliding connection between `said lever and thebell crank lever so that on the first movement of the operating lever the chuck will be withdrawn until 1t comes in Contact withv its stop andl then, on the continued movement of the operating lever, the jaws will be opened through the medium of the bell crank lever.

5. The combination in a tapping or reaming machine, of a spindle; means for driving. the spindle; a base; .a sliding chuck5v mounted on the base, said chuck having a' fixed and avmovable jaw to hold the work; a bell crank lever pivoted tothe movable jaw; a link connected to the fixed portion of the chuck and forming a toggle'with the bell crank lever; 'a stop to limit ythe outwardk movement of the chuck; and means for actuatingthe free arm of the bell crank lever so that thesliding chuck will be withdrawn clear ofthe spindles until it comes to the stop and then the work `will, be released by -the continued movement of the bell crank lever which will break the toggle. Y

. In testimony whereoi:n l have signed my name tothis speciication, in the presence of two subscribing witnesses. A

' JOHN R. SAYLUR.

Witnesses: WM. E. SHURE, l WM. A. BARR.' v

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