US2357627A - Drilling machine - Google Patents

Description

Sept. 5, 1944. E. J. BENTLEY :1- AL- DRILLING MACHINE Filed Nov. 30, 1942 6 Sheets-Sheet l Sept. 5, 1944. E. .1. BENTLEY ET AL DRILLING MACHINE Filed Nov. 50, 1942 6 Sheets-Sheet 2 BerzZZqy 9w vz/v r oms w 1 n m p 1944- E. .1. BENTLEY ET AL 7 2,357,627

DRILLING MACHINE Filed Nov. 30, 1942 6 Sheets-Shae: s

z. 13mm 1 N VEN TORS P 1944- E. J. BENTLEY'ET AL 2,357,627

DIHQILLINIG MACHINE Filed Nov. 50, 1942 e Sheets-Sheet 4 Sept. 5, 1944.

E. J. BENTLEY ET AL DRILLING MACHINE Filed Nov. 50, 1942 e Sheets-Sheet 5 ZVVEN T 0R8.

p 1@44- E. J; BENTLEY ET AL 2,357,627

DRILLING MACHINE IN VEN TORS,

Patented Sept. '5, 1944 DRILLING MACHINE Elmer Joseph Bentley and Campbell Young,

Paterson, N. J.

. Application November 30, 1942, SerialNo. 467,392

6' Claims.

This invention aims to provide a novel instrumentality whereby a line of holes may be bored in a work piece, it being possible to rotate the work piece on its axis, to present different portions thereof to the action of the drills, and it being possible to reciprocate the work piece, for a like purpose, if the work piece is flat.

The shifting of the drills with respect to the work piece is brought about by a plurality of carriages, interengaged with each other, and with the supporting frame, in a novel way, and novel means is provided for advancing the drilling mechanism with regardto the work.

It is within the provinceof the disclosure to improve generally and to enhance the utilityofi devices of that type to which the present invention ,appertains.

With the above and other objects in view, which will appear as the description proceeds,

the invention resides in the combination and arrangement of parts and in the details of construction-hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed, may be made within thescope'o'f what is claimed, without departing from the spirit of the invention. I In the accompanying drawings: 1 Fig. 1 shows in top plan, a device constructed in accordance with the invention;

Fig. 2 is an end elevation; Fig. 3 is a front elevation; Fig. 4 is a transverse section;

Fig. 5 is an end elevation showing amodification; 1

- Fig. 6 is a vertical section on the line 6-6 of Fig. 5.

In Fig. 1, which is a top plan, the letter F marks the front of the machine, and the-letter B marks the back thereof. As hereinafter employed, the word transverse means from front to back. In Fig. 3, whichis a front elevation,

the operator generally stands about where the legend "Fig. 3 appears, and longitudinal means to the right hand or to the left hand of the operator.

Th machine comprises a frame l, which may is provided and in its side portions are journaled axles 4, carrying grooved wheels 5, adapted to roll along the tracks 2. The carriage 3 moves transverselyof the machine, that is from front to back thereof. The carriage 3 includes longitudinal tracks 6. The carriage 3 has a rearward extension, including transverse rods 1, a longitudinal front cross bar 8., and a longitudinal rear cross bar 9, connected to therods 1.

The horizontal table I0 is located at the front .of the machine and is mounted upon the frame 1,, between the tracks 2. A template II is firmly but detachably mounted on the table It) and has holes or seats 2, laid out in accordance with the job of boring which is to be done. Y

A carriage I4 is provided, and has grooved wheels l5, movable along the tracks 6. The carriage l4, therefore, is adapted to move longitudinally of the machine. The carriage l4 includes a top plate or transverse arm [6, to which is secured a bracket [1, that extends forwardly, downwardly, and again forwardly, as shown in Figs. 2 and 4. An arm I8 is hinged at ISto the bracket IT, for vertical swinging movement, and issupplied witha handle 20. Near its forward end, the arm 18 carries a depending stylus, passing through the lower, forward part of the bracket I1 and adapted. to enter any selected one of the openings I 2 in the template ll.

- The rear end portion of the top plate It; of the carriage l4 extends well Within the frame I, as Fig. 4 shows, a spacer 22 being mounted on the part specified, a plate 23 being superposed on the spacer, and the parts [6, 22' and 23 being held together by securing elements 24. Near its edges, the plate 23 is provided with grooved wheels 25, mounted to rotate on vertical axes.

The end portions of the frame I are connected by tie bars 26, to which longitudinal tracks 21 are secured. The numeral 28 marks a carriage provided with grooved wheels 29, mounted to roll along the tracks 21, the carriage 28 having movement longitudinally of the machine. The carriage 28 is supplied intermediate its ends with a depending extension '30, extended downwardly between the tracks 21 and provided at its lower end with transverse guides 3|, preferably I- .beams, the wheels 25 of the carriage l4 being disposed between the lower flanges of the guides,

in engagement therewith. Near its ends, as

tends backwardly from the hinge.

tudinal rods 36, axles I06 being journaled in the end pieces, the axles carrying grooved wheels 31, the tracks 32 and 33 of the carriage 28 being engaged with the wheels, to support the truck 34.

The numeral 38 designates a tool carriage which has movement transversely of the machine, that is, from front to back. The tool carriage 38 includes longitudinal sills 39, to which depending transverse tracks 40 and 4| are secured, the tracks 40 being shaped like the tracks 32 of the carriage 28, and the tracks 4| being shaped like the tracks 33 of that carriage. The depending flanges of the tracks 46 and 4| are received in the grooved wheels 31 of the truck A framework 42 is assembled with the sills 39 of the tool carriage 38, and drilling mechanisms 46 are mounted on the framework, the drilling mechanisms including spindles 43, with which horizontal, rearwardly projecting drills 44 'are assembled, the 'drilling mechanisms being driven by electric motors 45, or in any other desired manner.

'anchored at 56, on the tracks 40 of the tool carriage 38.

It is evident from an inspection of Figs. 2 and 3 that the drills 44 are intended to perforate a piece of work which may be a bar or pipe. The work piece 5| is carried by a shaft 53, journaled in bearings 54 located at the top of the frame I at the ends thereof. and near the back of the frame. The work piece 5| is 'rotated, to present different portions of it to the drills 44.

The means for rotating the shaft 53 and work piece 5| may comprise pulleys 55, secured to the shaft 53 inwardly of the ends of the main frame of the machine,'a flexible element 56, such as .a belt, being looped about each pulley. Below the workpiece 5|, the belts are crossed as shown at 51 in Fig. 2. Tighteners 58 are mounted on rear cross bar 9 of the carriage 14, the rear ends of the flexible elements 56 being connected to the tighteners. The forward portions of the belts 56 move over direction changingidlers 59 on the ends of the frame I and are extended horizontally and forwardly, the forward ends of =the belts being connected at 60 to the cross bar 8 which forms part of the carriage 3;

The springs 49 of Figs. 2 and 1 constitute means for retracting the tool carriage 38. For the advancement of the tool carriage 38, to

cause the drills 44 to be fed into the work 5|, there is provided a means under the control of an operator and next to be described.

A pedal 6| is hinged at 62 tothe floor of the shop in which the machine is mounted, and ex- The pedal is raised by means of a pull spring 62", or a pair of such springs, having their upper ends secured .to the tracks 2 on the frame I.

The forward ends of flexible elements 63 are attached to the rear portions of the pedal 6|, and pass upwardly and rearwardly over idlers 64, mounted to rotate on the frame I. -The flexible elements 63 .extend upwardly, around idlers 65 at the lower,

rear portion of the frame I and extend forward- .ly, at the top of the frame, over idlers 66 on the .frame. The upper, forward ends of the flexible elements 63 are attached to bearings 68, in which a shaft 61 is mounted to rotate.

The shaft 61 is mounted in bearings 12 (Fig.

'4) retained at 13 in extensions 69 (Figs. 1 and 4) on the rear ends of the tracks 46 of the tool carriage 38. Between the belts 56 (Fig. 3) and the end portions of the main frame I, grooved wheels 10 are mounted rotatably on the shaft 61 and are so located as to roll along short tracks I on the ends of the main frame, the tool carriage 38 thus being given added support directly below the spindles 43 of the drilling mechanisms Referring particularly to Fig. 2, and assuming that the stylus 2| is in one of the seats |2 of the template I I, the operator depresses the pedal 6|, and the springs 62' are put under tension. The flexible elements 63 run over the sheaves 64, 65 and 66, and the tool carriage 38 is carried rearwardly, the tool carriage being supported on the wheels 31 of the truck 34. This operation elongates the springs 49. The drills 44, operated by the motors 45, form a line of holes in the work piece 5|, longitudinally thereof.

The pedal 6| is released, and swings upwardly, under the impulse of the springs 62'. The springs 49 move the tool carriage 38 forwardly, and the drills 44 are retracted with respect to the work piece 5|. As the carriage 38 moves forwardly, the flexible elements 63 pay over the sheaves 64, 65 and 66.

In order to bore more holes in the work piece 5|, in the same longitudinal row, the operator swings the arm l8 upwardly, by means of the handle 26, until the stylus 2| is clear of the seat l2 which it formerly occupied in the template I Using the handle 20, the operator moves the carriage |4 lengthwise of the machine, to a selected position, the carriage wheels I5 travelling along the tracks 6. The arm I8 is swung downwardly until the stylus 2| enters a selected seat l2 in the template The carriage now is fixed in a new position, longitudinally of the machine.

Referring to Fig. 4, when the carriage l4 moves lengthwise of the device, the top plate l6 of the carriage, the plate 23 thereon,the wheels 25, the guides 3| on the extension of the carriage 28, and the body of the carriage 28 are movedlongitudinally of the machine. At this time, the wheels 25 which, in effect, are mounted on the carriage l4, do not move transversely, that is from front to back, on the guides 3|, which are indirectly secured to the carriage 28.

When the carriage 28 moves longitudinally, the tool carriage 38 moves longitudinally of the machine, also, since the wheels 31 of the truck 34 are engaged with the tracks 32 and 33 (Fig. 3) of the carriage 28, and with the corresponding tracks and 4| of the carriage 38. The drills 44 are moved longitudinally of the machine.

The operator depresses and then releases the pedal 6|, the drills 44 being advanced into the work piece 5|, and being withdrawn therefrom, in the manner hereinbefore described.

Suppose that it is desired to rotate the work piece 5| on its horizontal axis, thereby to present a new portion of the work piece to the drills 44, in order to bore another line of holes extended longitudinally of the work piece, but spaced, circumferentially of the work piece, from the lines that have already been bored.

Through the ,instrumentality of the handle 20,

the arm I 8 is swung upwardly, to remove the the template I I. The operator pushes rearwardly on the handle 20, the wheels of the carriage 3 "moving rearwardly on the tracks 2 of the frame I. The arm I8 is swung downwardly,to engage the stylus 2| in another seat I2 of the template II, considered relatively to the front and the back of the machine.

' The flexible elements 56 impart rotation to the pulleys 55 and to the shaft 53, a new portion of the work piece 5| now being presented to the "drills 44.

The operator depresses and. then releases the pedal SI, and the work piece is bored,

'roll along the guides 3| that are connected to the carriage 28: nor does the carriage I4 have a front to back movement, relatively to the car- 'r age 3, because the wheels I5 of the carriage I4 are engaged with the tracks 6 of the carriage 3.

The work piece 5i may be perforated, both longitudinally and circumferentially. by the manipulation of two parts, to wit, the pedal BI and the handle 20.

Passing to the form depicted in Figs. 5 and 6,

parts hereinbefore described have been designated by numerals already used, with the suffix The frame Ia of the machine includes uprights or guides 14, sustained by inclined braces I5. A vertically movable support for flat work is provided, and may be in the form of a plate shown at I6. The plate 16 has wheels 'II, mounted to move along the guides 14.

Adjacent to their upper ends, the uprights are connected by a cross tie I8, on which are journaled inner pulleys I9. The cross tie I8 projects outwardly beyond the guides I I, and on the outwardly projecting portions of the cross tie are journaled outer pulleys 80. Flexible elements 8| are extended across the pulleys I9 and 80, and to the outer ends of the flexible elements are secured counterweights 82, or equivalent devices The inner ends of the flexible elements 8| are secured at 83 to the upper portion of the work support 16. The function of the counterweights 82 and associated parts is to aid in the raising of the work support 16.

An upper horizontal shaft 84 and a lower horizontal shaft; 85 are joumaled for rotation on the guides I4. The shaft 85 carries outer band wheels 86, and inner band wheels 81, the shaft 84 carrying band wheels 88.

Flexible elements or bands 89 are provided, and have their lower, forward ends attached to the carriage 3a, as shown at 811-6011 in Fig. 5. The bands 89 extend backwardly and upwardly over the band wheels 86, and thence downwardly over the band wheels 88, the lower ends of the bands bemg secured at 90 to the upper portion of the work support I6. Bands 9| are provided, and have their upper ends secured to the lower portion of the work support I6, the bands proceeding downwardly and rearwardly, around the band wheels 81, the rear ends of the bands being secured to the parts Ia of the carriage 3a, as shown at 9a in Fig. 5. In substance, each band 9| and the corresponding band 89 form one band, in

which the work support 16 is interposed.

Reciprocation of the carriage 3a causes an up and down movement of the work support 16, to

present different portions of the work support and the work upon it to the drills Me, the machine of Fig. 5 operating practically like the one shown in Fig. 2, aside from the fact that, in Fig. 2, the work piece 5| is rotated on its axis, whereas the work holder'lB, adapted to retain a flat piece of work, hasright line movement.

For convenience in claiming the invention, the carriage 3 may be called a supporting carriage, the carriage I4 being an operating carriage, and the carriage 28 being a conveyor carriage. The several carriages are wheel-mounted, and friction is reduced to such an extentthat the machine may be handled by a single operator, the pedal 6| being actuated by his foot, the handle 20 and the connected parts being manually operated. In both forms of the invention, the work holder is movably mounted on the frame. In the form shown in Figs. 1 to 4, the work holder 7 f is the shaft 53, and its movement is that of rota- 25 tion. In the form shown in Figs. 5 and 6, the work holder is shown at I6, and its movement is a right line sliding movement. 7

Having thus described the invention, what is claimed is:

1. In a drilling machine, a frame, a supporting carriage mounted on the frame for movement transversely thereof, an operating carriage mounted on the supporting carriage for movement longitudinally of the frame, a conveyor carriage mounted on the frame for movement longitudinally thereof, a slidable connection between the operating carriage and the conveyor carriage and disposed transversely of the frame, the connection joining the operating carriage and the conveyer carriage together for movement together longitudinally of the frame and to permit the conveyer carriage to move relatively to the operating carriage and transversely of the frame, a tool carriage, means for mounting the tool carriage on the conveyor carriage for movement transversely of the frame, drilling mechanism on the tool carriage, a work holder movably mounted directly on the frame, in operative relation to the drilling mechanism, and mechanismextended transversely of the frame, and connected to the supporting carriage and to the work holder, for moving the work holder to present a new portion of the work to the drilling mechanism, when the supporting carriage is actuated.

2. A drilling machine constructed as set forth in claim 1, and wherein the means for mounting the tool carriage on the conveyor carriage comprises tracks mounted on those carriages, transversely thereof, and a freely movable truck interposed between those carriages and having wheels engaged with the tracks against movement longitudinally of the frame.

3. A drilling machine constructed as set forth in claim 1, and wherein the work holder comprises a shaft supported for rotation on the upper portion of the frame, a pulley on the shaft, and a flexible element engaged with the pulley and having its ends connected to the supporting carriage at widely spaced points transversely of the machine, the flexible element being crossed upon itself below the pulley, and the specified location of the shaft serving to elevate the work on the shaft, for ready inspection.

4. In a, drilling machine, a frame, upright guides located adjacent to the ends of the frame, a vertically-movable, transverse work support having its ends slidably mounted on the guides, a carriage mounted on the frame for sliding movement toward and away from the support, a.

boring mechanism upheld by the carriage for sliding movement transversely of the frame and so located as to cooperate with work on the support, a flexible element having its ends extended in opposite directions transversely of the frame and connected to the carriage at spaced places,

ing carriage, means for mounting the carriage for straight line movement transversely of the frame and for straight line movement longitudinally of the frame, the carriage having a transverse arm prolonged backwardly into the frame,

spaced tracks extended longitudinally of the frame, a conveyor carriage mounted to move along the tracks and provided with a depending extension disposed between the tracks and extended downwardly therebelow, transverse guides carried by the extension and located below the tracks, the guides extending forwardly and rearwardly beyond the tracks, the conveyor carriage being slidably engaged with the guides, a boring mechanism supported on the conveyor carriage, and means on the frame for holding a 6. In a machine for boring an approximately cylindrical piece of work transversely, under the guidance of a flat template, a frame, a workpiece holder journaled on the frame for rotation about a substantially horizontal axis, a substantially horizontal template support on the frame, a carriage, a stylus supported on the carriage in such position that it cooperates with a template on the template support, a boring mechanism so disposed as to cooperate with a work piece on the holder, a movable means, one portion of which mounts the boring mechanism on the frame for straight line sliding movement I transversely of the frame, to advance the boring mechanism with respect to a work piece on the of the frame, to shift the boring mechanism to work piece in the field of operation of the boring mechanism.

a new place with respect to a work piece on the holder, means for mounting the carriage for straight line sliding movement longitudinally of the frame and for straight line sliding movement transversely of the frame, the carriage being engaged with said other portion of the movable means, for straight line sliding movement transversely of the frame, mechanism for rotating the holder, responsive to the movement of the carriage transversely of the frame, and mechanism for actuating said one portion of themovable means, to advance the boring mechanism, the actuating mechanism terminating in a part located so close to the stylus that the stylus, said 'part, and the carriage, may be controlled by one operator occupying a single position.

ELMER JOSEPH BENTLEY. CAMPBELL YOUNG.

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