US3748965A - Angularly adjustable attachment for a machine tool headstock - Google Patents

Angularly adjustable attachment for a machine tool headstock Download PDF

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Publication number
US3748965A
US3748965A US00221964A US3748965DA US3748965A US 3748965 A US3748965 A US 3748965A US 00221964 A US00221964 A US 00221964A US 3748965D A US3748965D A US 3748965DA US 3748965 A US3748965 A US 3748965A
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United States
Prior art keywords
fitting
machine
headstock
spindle
fittings
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Expired - Lifetime
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US00221964A
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English (en)
Inventor
M Galbarini
F Ramusino
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.)
INNOCENTI SOC GEN IND METALLUR
INNOCENTI SOC GEN INDUSTRIA METALLURGICA MECCANICA IT
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INNOCENTI SOC GEN IND METALLUR
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B29/00—Holders for non-rotary cutting tools; Boring bars or boring heads; Accessories for tool holders
    • B23B29/03—Boring heads
    • B23B29/034—Boring heads with tools moving radially, e.g. for making chamfers or undercuttings
    • B23B29/03432—Boring heads with tools moving radially, e.g. for making chamfers or undercuttings radially adjustable during manufacturing
    • B23B29/03435—Boring heads with tools moving radially, e.g. for making chamfers or undercuttings radially adjustable during manufacturing by means of screws and nuts
    • B23B29/03439—Boring and facing heads
    • 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
    • B23Q1/0063—Connecting non-slidable parts of machine tools to each other
    • 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
    • B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
    • B23Q3/12—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for securing to a spindle in general
    • 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
    • B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
    • B23Q3/155—Arrangements for automatic insertion or removal of tools, e.g. combined with manual handling
    • B23Q3/157—Arrangements for automatic insertion or removal of tools, e.g. combined with manual handling of rotary tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2229/00—Details of boring bars or boring heads
    • B23B2229/16—Boring, facing or grooving heads with integral electric motor
    • 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
    • Y10T409/00—Gear cutting, milling, or planing
    • Y10T409/30—Milling
    • Y10T409/30784—Milling including means to adustably position cutter
    • Y10T409/308456—Milling including means to adustably position cutter with right angle cutter drive

Definitions

  • ABSTRACT A machine tool having a device on the end of the headstock for the automatic attachment of various fittings which are used on the machine from time to time.
  • the device comprises two relatively rotatable members, a first one attached securely to the headstock and a second one adapted for carrying the fittings.
  • a motor is provided on the first member for effecting rotational movement of the second member so that a fitting on the device can take up any desired angular position with respect to the headstock.
  • the machine is provided with a deposit or store arrangement having a plurality of frames for storing the fittings in predetermined orientations such that the machine can deposit and take up fittings automatically. To this end each frame is fitted with automatic sinewing devices which sinew on the fittings when the headstock of the machine is correctly aligned with the fitting.
  • the present invention relates to machine tools, and particularly to a device for machine tools by means of which automatic attachment of various types of fittings to the headstock of a machine tool such as a milling or a milling-boring machine can be effected.
  • the device allows the angular orientation of the fitting to be changed with respect to the headstock to which the fitting is attached.
  • Milling-boring machines or more generally, milling machines fitted with a mobile headstock such as, for example, the portal type or trestle type milling machines, are capable of executing a number of different operations on one workpiece, provided they are equipped with a suitable range of fittings. Such fittings make possible the use of tools which, owing to their adjustment angle or type, could not otherwise be borne by the operating spindle of the machine.
  • a device for the automatic attachment of fittings of various types to the headstock of a milling or millingboring machine comprising a first member rigidly attached to the front end of the headstock of the machine, a second member adapted to support any selected fitting and rotatably mounted with respect to the first member, means on the said first member for effecting angular displacement of the second member with respect to the first and means for attaching the selected fitting to the second member, both the first and second members being provided with respective coaxial openings to allow the passage of the operating spindle of the machine and a transmission device for coupling drive from the said spindle 'to the tool or tools borne by the said fittings.
  • FIG. 1 is a diagrammatic side view of a milling machine of the upright type having a fitting mounted on the. headstock by means of a device constructed as an embodiment of this invention
  • FIG. 2 is a diagrammatic perspective view of a portal type milling-boring machine the headstockjof which is suitable for being equipped with an attachment device constructed as an embodiment of the invention
  • FIG. 3 is a diagrammatic cross section of the embodiment of the invention illustrated in FIG. 1;
  • FIG. 4 is a diagrammatic front view, partially in section, of the device illustrated in FIG. 3;-
  • FIG. 5 is a diagrammatic rear view of a frame for the deposit and storage of fittings which are not in use, showing a fitting in position on the frame;
  • FIG. 6 is a view of the under part of the frame illustrated in FIG. 5 showing a fitting in position
  • FIG. 7 is a diagrammatic longitudinal vertical section of the frame illustrated in FIGS. 5 and 6, illustrating the positioning of the automatic screwing devices for the attachment of the fittings to the attachment device on the headstock of the machine;
  • FIG. 8 is a front view of one type of fitting suitable for use with the embodiment illustrated in FIG. 3',
  • FIG. 9 is a diagrammatic side view of the fitting shown in FIG. 8;
  • FIG. 10 is a diagrammatic front view of a second type of fitting suitable for use with embodiments of the invention, and having an adjustable facing platform, mounted on the device for attachment to the headstock of the machine;
  • FIG. 1 1 is a side view of the fitting illustrated in FIG. 10;
  • FIG. 12 is a sectional diagrammatic view of the fitting illustrated in FIGS. 10 and 11;
  • FIG. 13 is a diagrammatic front view of another embodiment of the invention illustrating the possibility of using tools directly linked to the spindle of the machine in spite of the presence of the embodiment.
  • FIG. 14 is a diagrammatic sectional view illustrating the directconnection of a tool onto the spindle of the machine which is fitted with an embodiment of the invention. 1
  • FIGS. land 2 there are shown known types of milling machines: in FIG. 1 there is shown a milling machine 1 of the upright type on which there is a slide 2 to which is linked a horizontal headstock 3.
  • FIG. 2 there is shown a portal type milling machine 4, mounted on lateral uprights 5 and including a mobile carriage 6, on a portal 4, A headstock 7 mounted for'vertical movement is supported by the mobile carriage 6.
  • the end 3a of the headstock 3 of FIG. 1, and the end 7a of the headstock of 7 of FIG. 2 are adapted to be linked directly to the tools 8 or to fittings of various types such as that indicated by the reference numeral 9 in FIG. 1.
  • the workpieces are mounted on a bench 10 in the machine illustrated in FIG. 1 and a bench 11 in the machine illustrated in FIG. 2.
  • the upright l of the machine illustrated in FIG. 1 can slide parallel to the bench 10 on a base 12 while the uprights 5 of the machine. illustrated in FIG. 2 can slide horizontally upon the basesl3 and 14 parallel to the bench 11.
  • a device for automatically attaching afitting such as the fitting 9 illustrated in FIG. 1, to the front part 3a of the headstock of the milling machine (or 7a in the case of the machine of FIG. 2), comprises a first member, in the form of a support plate 15 which is rigidly fixed to the front wall at the end 3 of the headstock 3 of the milling machine'
  • the member 15 is substantially disc shaped and has a certain opening 16 through which extends the main operating spindle 17 of the milling machine.
  • the spindle 17, as in known machines, is coaxial with a second spindle 18 which is used for boring and therefore mounted for axial movement.
  • the plate-like member 15 has a ring member 19, rigidly attached to it by means of screws 20; the ring member 19 provides a circular support guide for a second member 22 which will hereinafter be referred to as the attachment plate 22, which is mounted, by means of radial bearings 21, on the first member 15.
  • the second member, or attachment plate 22 is also provided with an opening 23 which is coaxial with the opening 16 of the support plate 15 to allow free access to the main spindle l7.
  • a ring gear 24 which, as shown in FIG. 3, is formed on the edge of an annular member 25 which is attached, for example, by means of screws 26 to the attachment plate 22.
  • This ring gear 24 engages with a gear wheel 27 whose shaft 28 is supported by the support plate 15 rigidly mounted on the front 3a of the headstock 3 of the milling machine.
  • the gear wheel 27 engages with a pinion 29 carried on a shaft 30 which is also supported by the support plate 15.
  • the fitting 9 is supported by the attachment plate 22 by a known type of screwing means which is not visible in FIG. 3.
  • an arrangement of teeth 36 shaped to engage with a corresponding arrangement of teeth (not illustrated), on the input shaft of the fitting 9.
  • the tooth arrangement 36 may alternatively be mounted on an adaptor (not shown) attached to the spindle 17.
  • the opening 23 of the attachment plate 22 is sufficiently wide to accommodate a mechanism for coupling the input shaft of a fitting 9 to the shaft 17 or 18.
  • the mechanism is arranged so that it can couple a tool directly to the shaft 17 in the case of operations where fittings such as the fitting 9 are not necessary.
  • Such coupling mechanisms which do not form part of the present invention, are shown in diagrammatic form by a lever 37 pivoted at 38 and provided with a hooking device 39 and a small roller 40 running on a cam 41 borne by the boring spindle l8.
  • Mechanisms such as this which form the subject of another patent by the same applicant, permit the locking of a tool by means of the hooking device 39 by means of an axial movement of the boring spindle 18 which moves the cam 41 and causes the lever 37 to rotate about its pivot 38.
  • the support plate 15 has a projection 15a on which are mounted two pulleys 42 and 43; the former is pivoted at 50, and the latter, pivoted at 44, is mounted on rails 45 and biased by a counterweight 46 to which is attached the end of a cable 48.
  • Aroundthe pulleys 42 and 43 is wound a flexible tube'47 which enables lubricating liquid to reach the fitting 9, in a known manner.
  • the device is completed by a damper 51 which operates on the periphery of the attachment plate 22 to lock the plate 22 in any desired angular position to which it is moved in relation to the support plate 15.
  • the rotary movement of main spindle 17, in the specific case of the fitting 9, illustrated, is transferred to the delivery spindle 52 of this fitting 9, whose axis is at with respect of the axis of the main spindle 17 of the machine.
  • the gear train comprising the worm screw 32, the gears 31, 29 and 27, and the ring gear 24, effects rotation of the assembly formed by the attachment plate 22 and the fitting 9 by any desired angle with respect to the support plate which is fixed to the headstock 3a of the machine.
  • FIGS. 13 and 14 illustrate a situation in which a cutter 8 is shown joined to the spindle 17 by the automatic coupling means described above while at the same time the headstock 3a of the machine carries a device for automatically attaching the fittings of the type which has been described above.
  • the present invention lends itself to the adaption of a machine tool possibly programmed with digital control to have automatic attachment of the fittings to the headstock of the machine tool with the help of a deposit or store for receiving and storing the said fittings.
  • a suitable deposit or store comprises a polygonal frame made of cross pieces 53 and longitudinal beams 54 connected by transverse struts 55 on the sides and transverse struts 56 on the bottom.
  • a fitting 9 is shown supported by this frame; the frame is located near to the machine so that it can be reached by the end of the headstock by means of the normal displacement movements of the headstock.
  • the beams 54 house automatic screwing devices generally indicated 155 in FIG. 7.
  • the devices 155 operated by respective motors 156.
  • the automatic screwing-on devices 155 and consequently the beams 54 which house them, in the embodiment illustrated, are aligned with the screw devices 57 on the fitting 9 which serve to fix the fitting to the attachment plate 22 of the attachment device on the headstock of the machine.
  • These screw devices comprise a microswitch 58 the trigger 59 of which is engaged by a cam 60 borne on a sliding component 61 restrained by a spring 62.
  • a fitting such as the fitting 9, for example, is resting on a frame and it is desired to attach the fitting 9, on to the component 22 of the automatic attachment device on the headstock 3a of the machine:
  • the headstock is driven, until it is adjacent the frame in which the fitting 9 is housed; this can be effected, for example, by means of a programming device (not shown).
  • the headstock is then driven to approach the fixing device 57 frontally until they are inserted into the corresponding holes 57a of the attachment plate 22. This operation is facilitated by suitable centering means of known type.
  • the fitting 9 is removed from its housing by this movement and, together with the headstock of the machine, moves to the work area.
  • the screw devices 55 are provided with safety means (not illustrated)-which switch to prevent continuation of the cycle of taking up the fitting if one or more of the fixing screws is not properly screwed on.
  • the programming device will obviously include a step in which the fitting previously in use is deposited upon its respective frame before the headstock moves automatically in front of the frame holding the next fitting to be taken up.
  • the fittings can be of various types.
  • FIGS. 8 and 9 a fitting very commonly in use, in which the output spindle 52 is at an angle of 90 in relation to the axial direction of the main spindle of the machine to which it is to be attached. This corresponds to the fitting marked 9 in FIGS. 1 to 7.
  • FIGS. 10, l l and 12 illustrated another fitting which is very frequently used; this consists of a facing platform 63 provided with removable parts 64 and 65 which carry tools 66.
  • the removable parts 64, 65 slide upon rails on the platform 63 and are moved along these rails by respective nuts 67 and 67a which in turn, are moved by screws 68 and 68a.
  • the screws 68 and 68a are driven by a bevel opinion transmission 69 which is driven by a motor 70 via a shaft 71; the motor 70 may be, for example, a stepping motor.
  • the whole assembly described above is rotatably mounted on a fixed platform 72 by means of a pinion 73 which meshes with a ring gear 74 which is integral with the inner structure 75 of the platform 63.
  • the pinion 73 is driven by the main spindle of the milling machine through the shaft 76 and the bevel gears 77 and 78.
  • a device for the automatic attachment of one of a plurality of fittings, each having an input shaft and carrying at least one tool, to a machine of the milling or milling-boring type, having a headstock and an operating spindle comprising;
  • said means for coupling said spindle of said machine to said input shaft of said fitting comprises an arrangement of teeth carried on the end of said spindle
  • a machine tool having the device of claim 7, and further comprising,
  • a store for said plurality of fittings said store having a plurality of frames adapted for receiving and storing each said fitting

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Drilling And Boring (AREA)
  • Machine Tool Units (AREA)
  • Multi-Process Working Machines And Systems (AREA)
  • Automatic Tool Replacement In Machine Tools (AREA)
  • Milling Processes (AREA)
  • Turning (AREA)
US00221964A 1971-03-31 1972-01-31 Angularly adjustable attachment for a machine tool headstock Expired - Lifetime US3748965A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT6807671 1971-03-31

Publications (1)

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US3748965A true US3748965A (en) 1973-07-31

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Country Status (5)

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US (1) US3748965A (enrdf_load_stackoverflow)
JP (1) JPS526907B1 (enrdf_load_stackoverflow)
DE (1) DE2209031A1 (enrdf_load_stackoverflow)
FR (1) FR2131763A5 (enrdf_load_stackoverflow)
GB (1) GB1343363A (enrdf_load_stackoverflow)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4020537A (en) * 1974-01-22 1977-05-03 Rene Deflandre Head-stock for a milling and boring machine
USRE31304E (en) * 1975-06-20 1983-07-12 Kabushiki Kaisha Komatsu Seisakusho Machine for drilling holes in right-angular work surfaces
US5242358A (en) * 1991-12-06 1993-09-07 Joy Technologies Inc. Machine tool accessory mounting method and apparatus
US5772566A (en) * 1995-09-02 1998-06-30 Chiron-Werke Gmbh & Co. Kg Machine tool
US9056356B2 (en) 2009-02-25 2015-06-16 Heckert Gmbh Device for machining workpieces
CN111872415A (zh) * 2020-08-03 2020-11-03 泉州市高谦机械产品有限公司 一种航空航天紧固零件车削加工机构
CN115464444A (zh) * 2022-09-07 2022-12-13 纽威数控装备(苏州)股份有限公司 龙门铣床自动头库以及机床

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1083111B (it) * 1977-05-18 1985-05-21 Bisiach & Carru Testa portautensile per macchina operatrice particolarmente per pinze di saldatura a resistenza o torce per saldatura in tig mig o mag
JPS58171232A (ja) * 1982-03-29 1983-10-07 Toyoda Mach Works Ltd 工作機械
DE3330942A1 (de) * 1982-09-17 1984-03-22 Scharmann GmbH & Co, 4050 Mönchengladbach Horizontal-, bohr- und fraesmaschine
JPS5968518A (ja) * 1982-10-13 1984-04-18 Mitsubishi Heavy Ind Ltd 副室式機関の燃焼室
IT1161889B (it) * 1983-02-11 1987-03-18 Innocenti Santeustacchio Spa Macchina fresatrice-alesatrice
IT1173463B (it) * 1984-03-23 1987-06-24 Andrea Spa D Testa a fresare nonche' a forare per macchina utensile
FR2564012B1 (fr) * 1984-05-11 1986-10-10 Renault Plateau d'alesage-dressage, notamment pour ensemble d'usinage a tetes interchangeables
DD246896A3 (de) * 1985-07-31 1987-06-24 Werkzeugmasch Forschzent Automatische zusatzgeraetewechseleinrichtung fuer vorzugsweise waagerecht- bohr- und fraeswerke in kreuzbettausfuehrung
JPS63112224U (enrdf_load_stackoverflow) * 1987-01-16 1988-07-19
IT1235796B (it) * 1989-09-11 1992-10-26 Josb S P A Macchina utensile a sostituzione automatica di "attuatori multifunzione" per eseguire automaticamente una sequenza di operazioni diverse, in particolare per l'installazione di organi di collegamento per l'assemblaggio di sottoinsiemi meccanici quali strutture aeronautiche, automobilistiche, nautiche ecc
FR2668730B1 (fr) * 1990-11-07 1995-05-05 Brisard Machines Outils Dispositif et procede de changement d'outils sur machine-outils a portique mobile.
FR2711932B1 (fr) * 1993-11-04 1996-03-01 Line Henri Dispositif porte-outil, notamment tête de fraisage, à porte-broche orientable.
CN102000868B (zh) * 2010-12-17 2013-06-19 德阳宏源机电工程有限责任公司 角铣头

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4020537A (en) * 1974-01-22 1977-05-03 Rene Deflandre Head-stock for a milling and boring machine
USRE31304E (en) * 1975-06-20 1983-07-12 Kabushiki Kaisha Komatsu Seisakusho Machine for drilling holes in right-angular work surfaces
US5242358A (en) * 1991-12-06 1993-09-07 Joy Technologies Inc. Machine tool accessory mounting method and apparatus
US5772566A (en) * 1995-09-02 1998-06-30 Chiron-Werke Gmbh & Co. Kg Machine tool
US9056356B2 (en) 2009-02-25 2015-06-16 Heckert Gmbh Device for machining workpieces
CN111872415A (zh) * 2020-08-03 2020-11-03 泉州市高谦机械产品有限公司 一种航空航天紧固零件车削加工机构
CN111872415B (zh) * 2020-08-03 2021-09-14 哈尔滨市金海盛工贸有限公司 一种航空航天紧固零件车削加工机构
CN115464444A (zh) * 2022-09-07 2022-12-13 纽威数控装备(苏州)股份有限公司 龙门铣床自动头库以及机床

Also Published As

Publication number Publication date
FR2131763A5 (enrdf_load_stackoverflow) 1972-11-10
GB1343363A (en) 1974-01-10
DE2209031A1 (de) 1972-10-12
JPS526907B1 (enrdf_load_stackoverflow) 1977-02-25

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