US2290766A - Machine tool, and especially radial drilling machine - Google Patents

Machine tool, and especially radial drilling machine Download PDF

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Publication number
US2290766A
US2290766A US312371A US31237140A US2290766A US 2290766 A US2290766 A US 2290766A US 312371 A US312371 A US 312371A US 31237140 A US31237140 A US 31237140A US 2290766 A US2290766 A US 2290766A
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US
United States
Prior art keywords
arm
column
shaft
locking
motor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US312371A
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English (en)
Inventor
Pegard Marcel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of US2290766A publication Critical patent/US2290766A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
    • B23Q1/25—Movable or adjustable work or tool supports
    • B23Q1/26—Movable or adjustable work or tool supports characterised by constructional features relating to the co-operation of relatively movable members; Means for preventing relative movement of such members
    • B23Q1/28—Means for securing sliding members in any desired position
    • Y—GENERAL 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T408/00—Cutting by use of rotating axially moving tool
    • Y10T408/91—Machine frame
    • Y10T408/93—Machine frame including pivotally mounted tool-carrier
    • Y—GENERAL 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T82/00—Turning
    • Y10T82/25—Lathe
    • Y10T82/2531—Carriage feed
    • Y10T82/2541—Slide rest

Definitions

  • the object of'the present invention is to provide improvements in machines of this kind, and,
  • Fig. 2 is a sectional view ill a horizontal plane
  • Fig. 3 is a vertical section on the line III-III of Fig. 1; i
  • connection between said shaft and the arm of the drilling machine being designed in such manner as to be able to absorb, without transmitting them, the reactions that result from the lockin and unlocking operations, in said shaft, whereby said reactions act practically neither on the arm nor on the carriage and consequently do not produce any displacement of the tool from its correct working position.
  • Fig. 5 is a sectional view,on an enlarged scale, on the line V-V of Fig. 2;
  • Fig. 7 is a diagram of the electric connections of a locking device working in two'steps, according to the invention.
  • Fig. 9 is an elevational view of l and 2. l
  • the radial drilling machine shown by the drawings includes the following essential eleline ments:
  • a fixed cylindrical column I supports a radial arm 2 pivotally mounted thereon and bearing on said column throughiits tubular sleeve 3.
  • a carriage I movable along the slideways or tracks 2a, 2b of the radial arm, carries the drill-
  • the driving of this shaft is advantageously ensured by an electric motor.
  • the immobilization of the arm on the column is prepared by producing a radial locking, which will be hereinafter called temporary locking, obtained by means of parts which are brought into play slightly before, and during, the final locking operation, whereby the arm is wholly immobilized during the arm locking and releasing operations.
  • the temporary locking action may .be supplied by an electromagnetic device connected in shunt with the final locking control motor, which ensures the quick and automatic succession of the two locking operations.
  • This hollow bracket ll constitutes a casing containing a speed reducing gear, with a tangential screw l5, mounted on the shaft l6 of the motor and meshing with helical wheel H, which is keyed on an intennediate shaft 4 l3.
  • This shaft l8 carries, at its other end, a
  • crank arm32 is fixed by means of screws 33 on a ring 35 acting as journal and oscillating in a brass bearing 36 immobilized by means of studs 31 in a support ll rigid with the arm of the drilling machine.
  • to the axis of shaft I3 is smaller than the radius of crank arm 32. Therefore, a.
  • This shaft 3 is guided, or joumalled, at the other end of the arm of the drilling machine, in a bearing H, which may, in some cases, be of the swivel type.
  • Temporary locking device The left hand side of Fig. 1 shows, in axial section, thesleeve 3'rigid with arm 2 which ,is mounted on the column.
  • Fig. 2 gives a transverse section of the system and Fig. 9 an elevational view thereof.
  • the magnetic circuit of the corresponding electro-magnet cores is closed through the metal of the column and the shoes II,- II and 54 are tightly applied against the column.
  • Most of the lines of force of the magnetic ileld which cause (the shoes to adhere against the column are perpendicular to the air gap and are directed toward the axis of the column. If 1" is the resultant of the forces of application produced in the three shoes, and 6 the coemcient of friction of said shoes against the column when the electro-magnets are energized, the force opposing the rotation of the arm of the drilling machine is equal to axF.
  • roller 85 is applied against the circular outline of cam 84, the circuit-breaker bar 88 then closthe carriage on slideways 2a, 2! without producpractical and efficient embodiments of the present invention as there might be changes made in the arrangement, disposition and form of the parts without departing from the principle of the present invention as comprehended within the scope of the accompanying claims.
  • a machine tool of the type described which comprises, in combination, a column, a radial arm carried by said column and pivotable about the axis thereof, locking means for fixing said arm with respect to said column, said locking means being liable to produce, when applied or released, tangential reactions of said column with respect to said arm, a shaft for operating said locking means, means for connecting said shaft with said arm comprising a bearing in which said shaft extends, in a loose fit, permitting transverse movement of the shaft in said bearing substantially to the extent that such transverse movement may be induced in said shaft by said tangential reactions, a motor carried by said arm adapted to turn always in the same direction, means interposed between said motor and said shaft, for causing said shaft to oscillate under the eifect of the rotation of said motor, a cam driven by said motor, a contactor inserted in the feed circuit of said motor including an energizing circuit adapted, when closed, to close the circuit of said motor, a circuit for maintaining the energizing of said contactor, a switch

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Automatic Tool Replacement In Machine Tools (AREA)
US312371A 1939-09-02 1940-01-04 Machine tool, and especially radial drilling machine Expired - Lifetime US2290766A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR862682T 1939-09-02

Publications (1)

Publication Number Publication Date
US2290766A true US2290766A (en) 1942-07-21

Family

ID=9342938

Family Applications (1)

Application Number Title Priority Date Filing Date
US312371A Expired - Lifetime US2290766A (en) 1939-09-02 1940-01-04 Machine tool, and especially radial drilling machine

Country Status (3)

Country Link
US (1) US2290766A (enrdf_load_stackoverflow)
BE (1) BE444065A (enrdf_load_stackoverflow)
FR (1) FR862682A (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3023792A (en) * 1957-10-02 1962-03-06 Emerson Electric Mfg Co Radial arm saw
US3538778A (en) * 1968-04-09 1970-11-10 Western Electric Co Apparatus for accurately aligning a device with a workpiece

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3023792A (en) * 1957-10-02 1962-03-06 Emerson Electric Mfg Co Radial arm saw
US3538778A (en) * 1968-04-09 1970-11-10 Western Electric Co Apparatus for accurately aligning a device with a workpiece

Also Published As

Publication number Publication date
FR862682A (fr) 1941-03-12
BE444065A (enrdf_load_stackoverflow)

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