US380496A - Machine for pointing - Google Patents

Description

(No Model.) a 7 Sheets-Shet '1. F, LEMAN.

MACHINE FUR POINTING, DRILLING, AND REAMING'.

Patented Apr. 3', 1888.-

{Ho Model.) '1 Shets-Sheet 2.

P. LEMAN.

MACHINE FOR POINTING, DRILLING, AND REAMING. No. 380,496. PatentedApr. 3, 1888.

7 Sheets-Sheet 3.

(No Model.)

I. LEMAN. MACHINE FOR POINT-ING, DRILLING,AND REAMING. No. 380 496. 5 .4?

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(No Model.) 7 Shets-Sheet 4. F. LEMAN.

MAGHINB FOR POINTING, DRILLING, AND REAMING. No. 380,496.

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v F. LEMAN. MACHINE FOR. POINTING, DRILLING, AND REAMING.

(No Model.)

Patented Apr. 3, 1888.

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I (No Model.) 7 Sheets-Shet 6. F. LEM-AN.

MACHINE FOR POINTING, DRILLING, AND RBAMING.

Patented Apr. 3, 1888.

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7 Sheets-Sheet 7.

(No Model.)

. P. LEMAN.

MACHINE FOR POINTING, DRILLING, AND REAMING.

No 380,496. Patented Apr. 3, 1888.

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UNITED STATES PATENT @FHCE.

FRANK LEMAN, OF ELGIN, ILLINOIS.

MACHINE FOR POINTING, DRILLING, AND REAMING.

SPECIFICATION forming part of Letters Patent No. 380,496, dated April 3, 1888.

Application filed August 5, 1886. Serial No. 210.096. (No model.)

To all whom it may concern:

Be it known that I, FRANK LEMAN, of Elgin, in the county of Kane, and in the State of Illinois, have invented certain new and useful Improvements in Mechanism for Pointing, Drilling, and Beaming; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, in which- Figure l is a perspective view of my machine as arranged for use. Fig. 2 is a plan view of the upper side of the same. Fig. 3 is a like view of the upper end of thejournaled head. Fig. 4 is a front elevation of said ma chine. Figs. 5 and 6 are elevations of 0pposite sides of the same. Fig. 7 is a vertical central section of said machine upon a-line extending from front to rear. Fig. 8 is an enlarged section of the journaled head upon a line through its longitudinal axis. Fig. 9 is an enlarged vertical central section of one of the chucks, and Fig. 10 is a horizontal section of the same upon line of Figs. 8 and 9.

- Letters of like name and kind refer to like parts in each of the figures.

The object of my invention is to enable the operations of pointing, drilling, and reaming to be simultaneously carried on upon a like number of parts; and to this end said invention consists, principally, in an organization in which is combined a series of rotatable workholding chucks that are adapted to have a Stepby-step rotation around a common center, a series of tool-spindles that are less in number than said chucks, and are each adapted to carry one of a series of pointing, drilling, and reaming or counterboring tools, means whereby each of said chucks may be moved into line with each of said tools and caused to rotate, and means whereby said tools may be simultaneously moved toward or from said chucks, whereby all of the various operations of pointing, drilling, and reaming or counterboring may be simultaneously carried on upon an equal number of pieces of work, substantially as and for the purpose hereinafter specified.

It consists, further, in an organization in which is combined a series of tools that are adapted by successive action to point, drill, and ream or counterbore, a series of rotatable work-holding chucks that exceed said tools in number and are each adapted to be moved by successive steps into line with each of the latter, means whereby said tools may be simultanousl y moved toward and from said chucks, and means whereby each of said chucks, after having passed within the line of action of each tool of the series, has a period of rest, whereby each of the said operations of pointing, drilling, and reaming or counterboring may be carried on simultaneously with the insertion of new and the removal of completed work, substantially as and for the purpose hereinafter shown.

It consists, further, in an organization in which a series of chuck spindles are journaled at equidistant points within a pivoted head that is adapted to have a step-by-step rotation around or upon its pivotal bearing, in combination with means, substantially as shown, whereby as each spindleis moved with said head one step from a predetermined point it is caused to revolve within its bearings, and its revolutions are caused to cease when by the farther partial rotations of said head said spindle again reaches its starting-point, substantially as and for the purpose hereinafter set forth.

It consists, further, in an organization in which a series of chuck-holding spindles are journaled at equidistant points within a pivoted head that is adapted to have a step-bystep rotation around or upon its pivotal bearing, in combination with means, substantially as set forth, whereby as each spindle is moved from a predetermined point by the partial rotation of said head its chuck is automatically closed and the spindle caused to revolve within its bearings, and when by the complete rotation of said head said spindle reaches its starting point it is automatically disconnected from its rotating mechanism and its chuck simultaneously opened,substantially as and for the purpose hereinafter shown and described.

In the carrying of my invention into practice I employ a vertical frame, A, which has the general form shown in Fig. 1, and at its lower end spreads out into a suitable base. To the front side, near the longitudinal center of said frame, is secured a housing, 13, that has a plain cylindrical interior, which from each end about one-fourth its length is made slightly conical.

Journaled within the housing 13 is a cylindrical head, G,which upon one end hasformed a conical periphal enlargement, c, that corresponds to and fits within the contiguous conical face I), while upon the opposite lower end of said head is fitted a section, B, that is adapted to conform to the conical face .b at such point, the construction being such as is usually employed for preventing longitudinal motion of a part without interference with its free rotation.

At equidistant points around the axis of the head (3 are journaled a number of spindles, D, each of which is adapted to rotate therein by means of a shaft, E, that is jonrnaled vertically within the axis of said head and within a bearing, F,which is secured to the base of the frame A. Secured to said shaft within the central portion of the head 0 is a gear-wheel, G, that meshes with a pinion, H,which'is journaled upon each of said spindles, the arrangement being such that said pinions are constantly rotated whenever said shaft is in motion.

Upon each spindle D, above its pinion is placed a clutch, I, which is locked in place thereon circumferentially, while free to move lengthwise of the same within certain limits. The lower end of said clutch is adapted to engage with the upper end of said pinion, and is held in such engagement with a yielding pressure by means of a spring, "Z, that is placed between its upper end and a collar, d, which is secured upon said spindle. This construction causes the motion of said pinion to be communicated to said spindle whenev er the former and said clutch are in engagement.

The clutch I is released from engagement with the pinion H by means ofa rod, K, which extends from below the lower end ofthespindle D upward within the same to the level of said clutch, where it is connected with the latter by means of a bolt or pin, k, that passes horizontally through said parts and through two vertically-elongated slots, d, within said spindles. Each spindle D carries a chuck, L, which may be of any usual form to adaptit to the work to be done, but which in the machine under consideration is of the kind known as clamping-chucks, and is provided upon its fiat enlarged upper end or head, Z, with a clamp, Z, that is held down upon the same by means of a bolt, Z which passes through a central slot in said clamp, and through a like opening, Z in said head Z, downward into an annular collar, M, that is placed around said chuck beneath said head.

At suitable points between the collar M and the headZare placedanu mber of spiral springs, on, preferably four, which exert a downward pressure and operate to hold the clamp Z downward upon said head with sufficient force to cause any article that is placed beneath the inner end of said clamp to be firmly held in place.

In order that the clamp Z may be raised so as to release an article held thereby, or ,to permit of the insertion beneath of any desired part, a bar, m, is placed transversely beneath the, collar M, within a suitable opening in the chuck L, and with its center is engaged one end of a rod, m*, which from thence extends downward to and is connected with a block, m that is placed within the spindle D, and through which passes the pin it. As thus arranged, an upward movement of the rod K not only releases the clutch I from engagement with the pinion H, so as to arrest the rotation of the spindle D, but also raises the clutchclamp Z and permits of the removal or insertion of work.

It is required that at one point in the rotation of the journaled head 0 each spindle D should have a period of rest for the purpose of enabling finished work to be removed and incomplete work substituted. Such point is preferably the front of the machine, where there is secured to the housing B a bar, N, that extends downward and then horizontally inward, as shown. The rear portion of the horizontal section of said bar has its upper face, at, formed upon an upward and forward inclination, and has such vertical position that as each of said spindles nears the front of said machine thelower end of its push-rod K will engage with,

said inclined face, a, and moving upon the same will be raised, so as to release the clutch I and raise the chuck-clamp Z. Upon a further rotation of said head said rod will pass out of engagement with-said tripping-lug and.

said clamp will be automatically drawn down ward again and said clutch will resume engagement with its pinion.

The head 0 is given a step-by-step rotation by means of a ring, O,whichisjournalednpon its lower portion,and is provided withaspringactuated pawl, 0, that is adapted to engage with either of a series of notches, c, which are formed within a flange, 0 that projects outward from the lower end of said head. An arm, 0, which extends radially outward from one side of said ring, enables the same to be rotated rearward upon and around its bearing, while by moving said ring forward said head is carried in the same direction. The head 0 is locked in position by means of a pawl, P, which is pivoted upon the housing B in such position as to enable its free end p to engage with either of the notches c as the same are brought into line with it. Said pawl is released from engagement by means of a lug, 9, upon its side,.which lug is engaged by a peripheral incline, 0", upon the ring 0, that occupies such relative position as to pass behind said lug p and swing said pawl P outward just before said ring reaches the rear limit of its motion, and its pawl o engages with one of the notches 0', while as said ring moves forward said locking-pawl is released and left free for engagement with the next notch c of the series. The number of said locking-notches corresponds to the number of spindles within the journaled head, and they are relatively arranged, so that cach partial rotation of the latter brings one of said spindles to the front center into position for the action of the chuck and clutch-releasing incline.

Upon the front side at the upper .end of the frame A are two A-shaped vertical ways, a,

upon which is fitted a slide, Q, which has in plan view the general shape of a triangle, and at each of its angles is provided with a vertical opening, 9, that is adapted to receive and contain a spindle, R, each of which spindles is made vertically adjustable, and at its lower end is adapted to receive and contain a suitable tool-holder, 1'. cated vertically by means of a lever, which is pivoted centrally within the frame A, and has its front end in pivotal connection with said slide and its rear end in engagement with a circumferential groove, 3, that is formed within the periphery of a horizontally-revolving cam, S. Said cam is secured to and rotates with a shaft, T, which is journaled vertically within said frame and is moved by means of a horizontallyjournaled shaft, U, that upon one end is provided with a belt-pulley, u, and upon its opposite end has a worm, a, which meshes with a worm-wheel, 25, upon said shaftT. Said cam is so timed as to move said slide slowly downward to the limit of its motion in such direction to allow a brief period of rest at such point, and then to raise said slide to the up per limit of its motion, where it is given a longer period of rest.

The mechanism shown is adapted for use in pointing, drilling, and reaming or counterboring holes, for which purpose the left-hand spindle carries within its holder a pointingtool, V, the rear center spindle carries a drill, W, and the right-hand spindle carries a reamer or counterbore, X. Each spindle becomes idle when it reaches the front of the machine, and while in such position is adapted to re ceive and discharge work.

In the use of the machine a piece of work, Y, which, for the purpose ofillustration, is the setting-lever of a watch, is placed in position upon the chuck oi the idlespindle and the journaled head then moved one-fourth of a revolution, by which movement said piece is clamped firmly in place and caused to revolve beneath the pointing-tool. The sliding head now descends andsaid pointiug'tool is brought into contact with said piece Y, within which it forms the desired conical recess. The tool slide now rises, and the spindlehead is given another partial rotation, so as to bring the part Y into position beneath the drill, when said slide again descends and said drill enters the point-recess previously formed and cuts within said piece of work a hole that has the predetermined size and depth, after which said slide returns to its upper position again. The spindle-head is now given another partial revolution, so as to bring the part Y beneath the reamer or counterbore, which tool, upon the downward movement of the slide, completes the opening within said piece of work, and is then raised, when, by a farther rotation of said spindlehead, the spindle, whose course The slide Qis reciprohas been thus followed, is brought again to the front, where its rotation ceases, its chuck is opened, and the completed piece of work may be removed and replaced by a new piece. All of the operations described are simultaneously carried on, so that at each partial rotation of said spindle-head a completed piece of work is removed and operations commenced upon a new piece.

Having thus described my invention, what I claim is 1. An organization in which is combined a series of rotatable work-holding chucks that are adapted to have a stepby-step rotation around a common center, a series of tool-spindles that are less in number than said chucks and are each adapted to carry one of a series of pointing, drilling, and reaming or counterboring tools, means whereby each of said chucks may be moved into line with each of said tools and caused to rotate, and means whereby said tools may be simultaneously moved toward or from said chucks, whereby all of the various operations of pointing, drilling, and reaming or counterboring may be simultaneously carried on upon an equal number of pieces of work, substantially as and for the purpose specified.

2. An organization in which is combined a series of tools that are adapted by successive action to point, drill, and reamor counterbore a series of rotatable work-holding chucks that exceed said tools in number and are each adapted to be moved by successive steps into line with each of the latter, means whereby said tools may be simultaneously moved toward and from said chucks, and means where by each of said chucks, after having passed within the line of action of each tool of the series, has a period of rest, whereby each of the said operations of pointing, drilling, and reaming or counterboring may be carried on simultaneously with the insertion of new and the removal of completed work, substantially as and for the purpose shown.

3. An organization in which aseries of chuck-spindles are journaled at equidistant points within a pivoted head that is adapted to have a step-by-step rotation around or upon its pivotal bearing, in combination with means, substantially as shown, whereby as each spindle is moved with said head one step from a predetermined point it is caused tov revolve within its bearings, and its revolutions are caused to cease when by the farther partial rotation of said head said spindle again reaches its starting-point, substantially as and for the purpose set forth.

4. An organization in which a series of chuck-holding spindles are journaled at equi distant points within a pivoted head that is adapted to have a step-by-step rotation around or upon its pivotal bearing, in combination with means, substantially as set forth, whereby as each spindle is moved from a predeter mined point by the partial rotation of said head its chuck is automatically closed and the II -Z spindle caused to revolve within its bearings,

In testimony that I claim the foregoing i and when by the complete rotation of said have hereunto set my hand this 14th day of head said spindle reaches its starting-point it is automatically disconnected from its rotatingme'chanism and its chuck simultaneously opened, substantially as and for the purpose shown and described.

May, 1886.

FRANK LEMAN.

Witnesses:

GEO. S. PRINDLE, CARLOS H. SMITH.

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