US1938107A - Drilling machine and the like - Google Patents

Drilling machine and the like Download PDF

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Publication number
US1938107A
US1938107A US558660A US55866031A US1938107A US 1938107 A US1938107 A US 1938107A US 558660 A US558660 A US 558660A US 55866031 A US55866031 A US 55866031A US 1938107 A US1938107 A US 1938107A
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Prior art keywords
work
tool
drilling machine
controlling
lovejoy
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Expired - Lifetime
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US558660A
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Ralph M Lovejoy
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Ralph M Lovejoy
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23BTURNING; BORING
    • B23B39/00General-purpose boring or drilling machines or devices; Sets of boring and/or drilling machines
    • B23B39/04Co-ordinate boring or drilling machines; Machines for making holes without previous marking
    • B23B39/08Devices for programme control
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00Metal working
    • Y10T29/51Plural diverse manufacturing apparatus including means for metal shaping or assembling
    • Y10T29/5124Plural diverse manufacturing apparatus including means for metal shaping or assembling with means to feed work intermittently from one tool station to another
    • Y10T29/5127Blank turret
    • Y10T29/513Stationary work

Description

Dec. 5, 1933. R. M. LOVEJOY DRILLING MACHINE AND THE LIKE Filed Aug. 22, 1951 l7 Sheets-Sheet 1 \nvenTor. Ralph M.\ ovejoy b mgnwkm AHys.
Dec. 5, 1933. Q R, M. LOVEJOY 1,938,107
DRILLING MACHINE AND THE LIKE Filed Aug. 22, 1931 17 Sheets-Sheet 2 Fig. 2,
lnvenTor. Rtflph M.L ovejoy byWWVW ATTys.
Dec 5, 1933. R, Lov o 1,938,107
AND THE E Filed Aug. 22, 1931 17 Shets-Sheet 3 lnvenToT. R h M. Lovej 0y b MWJ/W ATTys.
Dec. 5, 1933. R. M. LOVEJOY 1,938,107
' DRILLING MACHINE AND THE LIKE Fi led Aug. 22, 1951 17 Sheets-Sheet 4 Fi-es 32 Fig. 6. 34 so 58 7| 26 6s 38 26 as 23 Q4 \nk/enTo r.
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DRILLING MACHINE AND THE LIKE Filed Aug- 22, 1951 17 Sheets-Sheet 5 Fig. 71 A7 \nvenTor.
Ralph M.L0ve.joy
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Dec. 5, 1933. 'R LQVEJOY 1,938,107
DRILLING MACHINE AND THE LIKE Filed Aug. 22, 1931 17 Sheets-Sheet 6 Fig. 8.
' lnvenTor. Ralph M. Lovej 0y ATTys.
- Dec. 5, 1933. R LQVEJOY 1,938,107
DRILLING MACHINE AND THE LIKE Filed Aug. 22, 1931 17 Sheets-Sheet 7 F 9 k i 1g 97 \Ol I02 7 I00 39 I04 v U I 75 \f i\ 86 84 3 I f W l [U In a \nvenTor.
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DRILLING MACHINE AND THE LIKE Filed Aug. 22, 1951 17 Sheets-Sheet 8 O I46 O \nv e n Tor. Ralph M. Lovej'oy byWMkW Dem 5 1933. R LOVEJQY 1,938,107
DRILLING MACHINE AND THE LIKE Filed Aug. 22, 1951 17 Sheets-Sheet 9 HQ H.
8! mm rTTl \39 \37 \sa "1: 78- l4! Dec. 5, 1933. R. M. LOVEJOY 1,933,107
DRILLING MACHINE AND THE LIKE Filed Aug. 22, 1931 17 She'ets-Sheet 11 Ralph M. Lovejoy Dec. 5, 1933. R. M. LOVEJOY 1,933,107
DRILLING MACHINE AND THE LIKE Filed Aug. 22, 1931 17 Sheets-Sheet 12 HUS 25 In'venTor.
R0 \ph M. Lovejoy by/mw WMQMJ AITys.
Dec. 5, 1933. R. M. LOVEJOY 1,938,107
DRILLING MACHINE AND THE LIKE Filed Aug. 22, 1931 17 Sheets-Sheet 13 249 F1 20.
ZOO 240 239 202 '\nvenTor.
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DRILLING MACHINE AND THE LIKE Filed Aug. 22, 1931 17 Sheets-Sheet 14 Fig.22.
\nvenTor. Rcflph M. Lovej 0y yMMaM Dec. 5, 1933. R. M. LOVEJOY DRILLING MACHINE AND THE LIKE Filed Aug. 22, 1931 1'7 Sheets-Sheet l5 InvenTor. Roiph M. Lovejoy WW a?!" ATTys.
R. M. LOVEJOY Filed Aug. 22, 1931 17 Sheets-Sheet -16 sssqm s92 SSI B 390 InvenTor. Rcflph M. Lovej'oy WWW/1 necjs, 1933.
R. M. LOVEJOY DRILLING MACHINE AND THE LIKE Filed Aug. 22, 1931 17 Sheets-Sheet 1'7 FigZS.
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Lovejoy ATTys.
Patented Dec. 5, 1933 UNITED STATES PATENT OFFICE 44 Claims.
This invention relates to improvements in drilling machines and machines for other purposes, particularly those of the type in which the work is carried by a travelling carrier successively to aplurality of stations, at certain of'which it is operated upon by a tool such as a drill, a countersink, a reamer, a tapping tool, or other suitable tool.
More specifically the invention relates to improvements in automatic drilling machines and the like disclosed in my prior patents for drilling machines and machines for other purposes, No. 1,799,594 and 1,799,595, granted April 7, 1931; and in my prior applications, Ser. No. 441,387, filed February 3, 1930, for improvements in Fluid operated control for multi-spindle drills; Ser. No. 471,234, filed July 28, 1930, for Fluid operated control for multi-spindle drills; and Ser. No. 504,798, filed December 26, 1930, for Indexing mechanism for automatic drilling machines.
The general object of the present invention is to simplify the constructions disclosed in my prior patents and applications aforesaid, and to produce certain improvements in the indexing mechanism, the controlling mechanism for the timing thereof relatively to the operation of the tools; and in the mechanism for supporting and actuating the tools, while retaining the advantageous features of the mechanisms of my prior constructions for producing speed and accuracy of indexing and the safety mechanism for preventing interference of the indexing and tool actuating mechanisms.
The mechanisms disclosed in my prior patents and applications comprise sector-shape work supporting members which are slidably mounted upon a travelling carrier, means for actuating the carrier to present work supporting members successively at a plurality of tool stations, means for arresting the carrier with the work positioned at such stations, fluid actuated means for looking the work supporting members accurately at such stations irrespective of the correct indexing of the travelling carrier, fluid actuated controlling mechanism for causing the actuation of the tool feeding mechanisms after the work supporting members are locked at the respective tool stations, and means operable by the movement of the tool supporting members away from the work to release the locking means for the work supporting members and thereupon to initiate the action of the carrier indexing mechanism.
In the constructions disclosed in my prior patents and applications the locking mechanism for the work supporting sectors is released when the tools have been withdrawn from the work and raised to a predetermined height, so that the sectors are enabled to be moved freely upon the travelling carrier. When, during the operation of the machine, greater time is required to secure the work to the sector than that which is required for feeding the .tools into the work and. withdrawal of the tools from the work to the predetermined height the unlocking of the sectors permits them to be moved during the clamping of the work upon them. Such movement of the sectors not only makes it more difficult to secure the work to them but also it is likely to permit such movement thereof .as to force dirt or other dbris between the inner ends of the sector and the ring against which they abut thereby interfering with the accuracy of the position of the work supporting sectors.
One of the important features of the present invention is to provide fluid actuated controlling means of such character that the work supporting sectors will remain in locked position during the entire period of movement of the tools to and from the Work, and also during the time at which the work carrier is at rest, in other words, until just before beginning the tool feeding operation.
In my prior patents and applications mechanical means are provided for feeding the tools towards and into the work at a substantially uniform rate of speed. Another object of the present invention is to provide fluid-operated means for feeding the tools up to the work at a. relatively greater speed than during the operation of the tools upon the work.
Another object of the invention is to provide means for increasing the rate of feed to the tools when passing through an aperture in the work such as a core-hole and thereafter resuming the usual rate of feed.
Another object of the invention is to providea novel means for controlling the fluid-actuated feeding mechanism.
Another object of the invention is to provide novel tapping mechanism with means for reversing the direction of the rotation of the tap for the purpose of tapping screw threads into the work and withdrawing the tap without injury to the screw threads.
Another object of, the invention is to provide coordinated valve mechanisms controlled by cams upon a single cam shaft and operable to determine the sequence of operation of the various mechanisms of the machine.
These and other objects and features of the invention will more fully appear from the following description and accompanying drawings, and' will be particularly pointed out in claims.
' In the drawings:
Fig. 1 is a general view of a multiple drill construction embodied in the invention.
Fig. 2 is a plan view of the same.
Fig. 3 is a detail horizontal sectional view showing the stopping and starting mechanism for the travelling carrier.
Fig. 4 is a view mainly in vertical section of the reciprocable tool supporting and driving mechanism.
Fig. 5 is a detail view in horizontal section of the guiding mechanism of lines 5-5. Fig. 4.
Fig. 6 is a detail view of one of the guides for the tool slide.
Fig. 7 is a view partly in longitudinal section, and partly in elevation, of the reciprocable tool supporting and driving mechanism.
Fig. 8 is a side elevation of the control box and driving motor for the controlling mechanism.
Fig. 9 is a view partially in vertical section, and partially in elevation, showing the mechanism for driving a cam shaft in the control box.
Fig. 10 is an enlarged detail view partly in plan, and partly in horizontal section, of the control box and the mechanism for controlling the flow of fluid under pressure which actuates various parts of the machine and regulates the sequence of operation.
Fig. 11 is an enlarged detail view, mainly in vertical section, of the cam actuated valve for rapid traverse controlling mechanism for the tools, on line 11-11, Fig. 10.
Fig. 12 is a diagrammatic view illustrating the conduits and course of fluid under pressure when the machine is at rest.
Fig. 13 is a similar diagrammatic view showing the conduits and course of fluid under pressure when the tools are in operation.
Fig. 14 is an enlarged detail view, mainly in vertical section, of the cam actuated master valve for controlling the flow of fluid under pressure on line 14-14, Fig. 10, and also illustrating the cam actuated mechanism for controlling the normal feed of the tools.
Fig. 15 is a detail view, mainly in vertical section, longitudinally, of the clutch controlling valve.
Fig. 16 is an enlarged detail view on line 1&- 16, Fig. 17, of the mechanism for controlling the rapid and relatively slow feeding movements of the tool supporting .and actuating mechanism.
Fig. 17 is a plan view of the mechanism illustrated in Fig. 16.
Fig. 18 is a detail view of a modified controlling mechanism for varying the rate of feeding of the tool to permit it to pass more rapidly through an aperture such as a core-hole in the work.
Fig. 19 is a side elevation of the tapping mechanism.
Fig. 20 is a detail view, mainly in longitudinal section, of the feeding and actuating mechanism for a tapping or screw threading tool, and showing also the controlling mechanism therefor.
Fig. 21 is a detail sectional view of the brake mechanism for the tool drive of the tapping mechanism, on line 21-21, Fig. 19.
Fig. 22 is an enlarged detail view, mainly in vertical section, of the motor reversing mechanism for the tapping tool on line 22-22, Fig. 23.
Fig. 23 is a sectional view of the switch for the tapping mechanism on the line 23-23 of Fig. 22.
Fig. 24 is an enlarged detail view, partially in elevation, and partially in vertical section, of the units 3", C, and D", shown in Fig. 25, illustrating the same in the positions occupied when the travelling carrier is at rest and the feeler extended into the socket in the travelling carrier.
Fig. 25 is a plan view of the controlling units shown in Fig. 24 in connection with unit J and the solenoid operated valve of the electrical safety current.
Fig. 26 is a sectional view on the line 26-26 of Fig. 25.
Fig. 27 is a plan view of the controlling unit 8 for the table indexing fluid actuated motor.
Fig. 28- is a sectional view on the line 28-28 of Fig. 27.
Fig. 29 is a sectional view on the line 29-29 of Fig. 27. 8.
Much of the construction of the present ma- The fluid operated controlling mechanism disclosed in aforesaid prior patents or applications comprise essentially; 1) automatically operable 9. means for preventing the operation of the means for actuating the travelling carrier, unless and until all of the tools have been moved to a predetermined distance from the work; (2) fluid controlled means for preventing actuation of the 104 means for locking the rotating table unless the work is approximately positioned properly at the several tool stations; (3) fluid operated means for preventing actuation of the tool feeding means unless and until the work is properly positioned 10, at the tool stations and locked in such positions;
(4) means for preventing the actuation of the tool feeding means until the locking of the work carrier is completed.
The mechanisms for accomplishing these func- 1 tions which are disclosed in my prior patents or applications comprise a source of fluid under pressure and interrelated controlling units in the piping system leading from the source of fluid under pressure to the table locking mechanism and the mechanism for controlling respectively the actuation of the rotating table, the locking and unlocking of the table, the actuation and arrest of the tool feeding mechanism, and the safety control for preventing actuation of the 1;; tools unless and until the table is locked with the work positioned at the tool station. Many of the same units are employed in substantially the same construction and in the same relation in the present invention, and inasmuch as they are de- 3;, scribed in detail in the prior applications aforesaid need not be illustrated or described in detail in this application, except in such respects as slight changes in construction of the several units modifies their action to effect the same purpose, while permitting the omission of certain other units rendered unnecessary by such modification.
The units which are common to the present construction and to the constructions disclosed in my prior applications, particularly Ser. No. 504,- 798, comprise the following:
Unit B-By-pass control valve Unit C"-Table feeler release Unit "-Main pressure cut off valve Unit E-Main admission valve Unit -Distributor valve Unit -Manual safety switch Unit K"-Fluid control for table arresting mechanism Unit LControl for fluid operated motors L3 These units are identified upon the drawings herein by the same letters.
The construction illustrated in the accompanying drawings comprises a heavy hollow base 1, desirably of substantially cylindrical form, providing a reservoir for oil or other suitable fluid, and which preferably is of substantially the same construction as shown in my prior patents or applications, more particularly application Ser. No. 504,798. A travelling carrier in the form of a rotatable table 2 is mounted upon the base and carries a plurality of independent work supporting members 3, preferably in theform of flat sectors which are slidably supported upon the table 2 and are movable relatively thereto both radially and circumferentially in my'prior Patent No. 1,799,594. positioning means also provided at each tool station and are operable to position and lock the work supporting sectors against a central ring in accurately predetermined positions at each tool station, irrespective of the correct positioning of the travelling carrier, in the manner disclosed in my priorpatent aforesaid.
The upper closed end of the base is provided with an upwardly extending central cylindrical boss 5, (see Fig. 3), upon which a hub 6 extending downwardly from the table '2 is rotatably Fluid operated mounted. The upper end of the ,base is also provided with an upwardly extending intermediate flange 7 which provides a support for the table near its periphery. The base is also provided with an outer upwardly extending flange 8 providing a space between it and the flange 7 for a peripheral apron depending from the table. The flange 8 is also utilized as a base-for the tool supporting and actuating mechanism.
The mechanism for rotating the travelling carrier or table may be, and desirably is, of the same construction as disclosed in my prior application Ser. No. 504,798, and comprises an actuating ring 9 which is rotatably mounted upon the hub 6 of the table, and is provided with a pawl 10 adapted to engage blocks 11 fixedly secured to the hub of the table and spaced apart at suitable distances to enable the work supports which are carried by the table to be properly indexed to successive rotating mechanism. In
tool stations. The actuating ring 9' is rotated to cause the pawl 10 to engage the block 11 and move it in a proper direction by link mechanism which is operated by a hydraulic motor 12, and after the table has been properly positioned and locked the actuating ring is returned to its original position by anotherv hydraulic motor 13, as disclosed in my prior application Ser. No. 504,798, aforesaid.
The rotating movement of the table is arrested by mechanism similar to that disclosed in said prior application Ser. No. 504,798, which comprises apivotally and slidably mounted latch or stop 14, connected by a link to the piston 15 of a dash pct 16, which is supplied by fluid under constant pressure. The piston 15 of the dash pot is provided with a bevelled portion communicating with the port through which constant pressure is supplied in such manner as gradually to cut off the supply of fluid under pressure against the piston as the piston is moved inwardly, thus gradually arresting the movement of the table. The piston rod is provided with a block 1'7 having seated in a recess therein an adjustable block 18, which is adapted to engage the plunger 19 of a supplemental dash pot 20 to insure accurate stoppage of the table in properly indexed position. In my prior application Ser. No. 504,798, this dash pot, which is referred to as unit K, comprises also a valve for controlling the supply of fluid to unit L which controls the operation of the table the present case this the manner disclosed in,
4 mounted upon the base are table; and another arm which is secured to the shaft 22 which is located within the chamber of the base, is actuated by the movement of the spring pressed arm as it rides off the respective blocks-in properly timed relation to restore the by-pass valve (unit B) to'initial position, in
the manner disclosed in my prior application aforesaid. Thesequence of operation of the various mechanisms will hereafter be more fully described.
The invention is illustrated herein as applied to drilling and tapping mechanism, and comprises a plurality of like mechanisms located at certain of. the tool stations for feeding and actuating drills or boring tools, and also comprises similar mechanism of modified construction for supporting and actuating a tap for screw threading the wall of a bore in the work.
The tool supporting and actuating mechanisms of parallel girders 23, which are mounted at their outer ends upon a filler block 24, which is secured to or may be formed integral with, the peripheral flange 8 of the base 1, and are mounted at their inner ends upon a ring 25 which is secured to the hub of the base and overlies the inner ends of the sectors 3. The supports for the tool feeding and actuating mechanism comprise a pair of columns having reduced end portions which fit into sockets in blocks 26 which are bolted to the girders 23, the lower ends of the columns desirably being welded to the blocks, thereby providing a rigid construction. One of the columns desirably has a'lower section 27 of rectangular cross-section and an upper section 28 of cylindrical cross-section, while the other column is constructed so as to provide a lower section presenting flat side, and rear faces and a V-shape-front surface 29, and an upper section 30 of cylindrical cross-section. The upper ends of the columns are provided with integral cylindrical extensions of reduced cross-sectional area which extend through a top plate 31, and are provided with screw threaded upper ends to receive suitable nuts for clamping the plate 31 firmly upon the columns.
The preferred form of tool carrier or slide comprises a rectangular box-like construction having end plates 32 which are located in proximity to the respective columns and side plates 33, which are bolted to the end plates, as illustrated in Fig.
5. The end plates desirably extend above and below the side plates. The box-like construction formed by the end and side plates is provided with an upper rigid head 34 and a lower rigid head 35,
each of which is fixedly secured to the end and inner race of the bearing and is clamped there- 159
US558660A 1931-08-22 1931-08-22 Drilling machine and the like Expired - Lifetime US1938107A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2493206A (en) * 1945-06-27 1950-01-03 Perry Lowell & Co Lens grinding and polishing machine
US3128534A (en) * 1960-04-04 1964-04-14 Onsrud Machine Works Inc Multi-station operation workpiece supporting apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2493206A (en) * 1945-06-27 1950-01-03 Perry Lowell & Co Lens grinding and polishing machine
US3128534A (en) * 1960-04-04 1964-04-14 Onsrud Machine Works Inc Multi-station operation workpiece supporting apparatus

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