US3523484A - Machine tool - Google Patents

Machine tool Download PDF

Info

Publication number
US3523484A
US3523484A US688156A US3523484DA US3523484A US 3523484 A US3523484 A US 3523484A US 688156 A US688156 A US 688156A US 3523484D A US3523484D A US 3523484DA US 3523484 A US3523484 A US 3523484A
Authority
US
United States
Prior art keywords
bed
column
vertical column
tie rods
machine tool
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
US688156A
Other languages
English (en)
Inventor
Marcel L Neuman
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.)
Charles Ets
Des Anciens Charles Berthiez sa Ets
Original Assignee
Charles Ets
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 Charles Ets filed Critical Charles Ets
Application granted granted Critical
Publication of US3523484A publication Critical patent/US3523484A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
    • B23Q11/001—Arrangements compensating weight or flexion on parts of the machine
    • B23Q11/0014—Arrangements compensating weight or flexion on parts of the machine using static reinforcing elements, e.g. pre-stressed ties
    • 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
    • B23Q1/01—Frames, beds, pillars or like members; Arrangement of ways
    • B23Q1/015—Frames, beds, pillars
    • 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
    • Y10T409/309576—Machine frame
    • Y10T409/309744—Machine frame including means to compensate for deformation

Definitions

  • MACHINE TOOL This invention relates to a cutting, milling, boring or like machine tool of the kind comprising a bed, a table mounted on said bed for supporting a work piece, a vertical column mounted on said bed and having a tool carrying assembly vertically slidable thereon, said assembly including a horizontally slidable carriage carrying a cutting, milling, boring or like tool.
  • the main problem which arises in the construction of such machine tools is to provide the vertical column with sufficient stability to support the weight of the tool carrying assembly and withstand the forces to which it is subjected under operating conditions.
  • the conditions are such that the resultant of the forces in the region of the junction of the vertical column on the bed lie within the middle third of the base of the column no tensile stresses arise and the 'whole unit behaves like a monolithic structure.
  • These conditions obtain very exceptionally and the resultant forces usually pass through the outside of the base, in which case the junction between the base of the column and the bed, tends to open or parts of the flange by which the column is bolted to the bed tend to bend and thus considerably reduce rigidity and'stabili-
  • the object of the present invention is to overcome this problem and to provide a construction in which all parts at the junction of the vertical column and the bed are as far as possible subjected only to compression under all operating conditions and thus eliminate or reduce loss of rigidity and stability of the vertical column which occurs in known constructions.
  • the present invention consists of a machine tool of the kind described wherein the vertical column supportingthe tool carrying assembly is mounted on the machine bed by means of one or more tie rods under tension, the arrangement being such that said tensioned tie rod or each of said tie rods hold said vertical column in rigid bearing relationship with said bed in such a manner that said column and said bed are prestressed in compression.
  • the vertical column is mounted on the machine bed by a plurality of tie rods each of which is attached at one of its ends to said column and at its other end to said bed, said tie rods being pretensioned so as to hold said column on said bed under compres-
  • FIGURE 2 is a sectional view on the line ll-ll of FIGURE 1 and showing the bed of the machine in plan and the work table and tool carrying assembly in broken lines,
  • FIGURE 3 is a sectional view on an enlarged scale taken on the line lll-lll of FIGURE 2.
  • FIGURE? is a view similar to FIGURE 3 showing a modification in which tie rods are also utilised for clamping the bed of the machine to a concrete foundation or base.
  • FIGURE 5 is an axial section on a still larger scale illustrating means for tensioning the tie rods
  • FIGURE 6 is a section on the line Vl-Vl of FIGURE 5.
  • a machine tool of the kind to which the present invention relates is shown in FIGURE 1 and comprises a bed 4, upon which is mounted a support table 6, for supporting a work piece and a vertical column 1 on which is slidably mounted a tool carrying assembly including a horizontal member 2 upon which is horizontally slidable a car-,
  • riage 3 for mounting a suitable cutting, milling, boring or other tool.
  • the vertical column I is rigidly fixed to the plane surface 5 of the bed 4 by a plurality of tie rods 7 as illustrated in FIGURES 2 and 3.
  • seven tie rods 7" to 7 pass through vertical channels or passages 7a form-ed I within substantially U-shaped ribs 7b on the inside of the verti cal column and integral with the wall thereof, said tie rods vertical column 1 and bed 4 are prestressed in compression through their vertical height and the base of the vertical column is pressed tightly against the plane surface 5 of the bed 4.
  • each of the tie rods pass through a concrete or other foundationlO upon which the bed 4 is supported.
  • a pressure plate 11 and a part spherical washer 12 are positioned between the nut 9, screwed on to the lower end of the tie rod, and the under surface of the foundation 10, and a wedging member is provided between the base of the vertical column 1 and the upper surface of the concrete foundation 10.
  • the wedging member comprises two co-operating wedge elements 13 and 14 and an adjusting screw 15 which passes through a hole in a flange at the thin edge of wedge element 13 and screws into a tapped hole in the thick end of wedge 14 whereby rotation of said screw 15 causes relative movement between said wedge element to effect wedging action between the bed 1 and foundation 10.
  • Both wedge elements l3, 14 are provided with openings for the passage of the tie rod 7. As will be understood in this embodiment not only the bed 4 and column 1 but also the foundation 10 is prestressed in compression by the tie rods.
  • the length of the tie rods can be reduced by interposing a rigid transmission or support member (not shown) between for example the upper end of the vertical column and the upper ends of the tie rods, or between the lower ends of the tie rods I and the bed, or between both ends of the tie rods and the column and bed respectively, these members being arranged so as to transmit the compressive force of the tie rods to the column and/or bed.
  • a rigid transmission or support member (not shown) between for example the upper end of the vertical column and the upper ends of the tie rods, or between the lower ends of the tie rods I and the bed, or between both ends of the tie rods and the column and bed respectively, these members being arranged so as to transmit the compressive force of the tie rods to the column and/or bed.
  • Alternatively one suchmember may be provided for each rod.
  • the tensioning of the tie rods can be effected in any suitable manner but a suitable means therefor is illustrated in which said piston can be screwed onto the upper external screw threaded end of the tie rod.
  • the piston 16 is slidable in a cylinder 17 and the'axial cylindrical extension 16a is slidable in an opening in a closed end of said cylinder 17 with suitable sealing rings 18 and 18a between the piston 16 and cylinder 17 and between the cylindrical extension 16a of the piston and the opening in the closed end of the cylinder 17 respectively.
  • the closed end of the cylinder 17 is provided with legs 25 adapted to bear against the upper end of the vertical column 1.
  • the legs 25 are circumferentially spaced'around the closed end of the cylinder 17 so as to surround a nut 8, as shown when said legs bear against the upper end of the column 1.
  • the nut 8 is provided with a series of circumferentially spaced 7 5 radial holes-8a by means of whic'hsaid nut can be rotated by a tommybar; 24'. a
  • cylinder 17 is then placed on the upper end of the column 1 with its legs positioned around the nut 8.
  • the piston 16 is then screwed onto the upper end of the tie rod until its lower sur-' face is closely adjacenfto or in contact with the inner face of the closed end of the cylinder 17.
  • the relief valve 22 is then closed and the pump 20 operated to pump fluid under pressure into the chamber 19. Operation of the pump is continued to cause the pressure fluid to act on the piston .16 until the tie rod, to which the piston is connected, is thereby placed under a predetermined tension. This tensioning of the tie rod will result in the nut 8 being moved away from the upper end of the column 1 and said nut is then again'screwed down into engagement with the column 1 by means of the tommy bar 24.
  • the relief valve is opened to release the fluid pressure on the piston 16 after which the complete hydraulic device 16, 17 is removed from the tie rod.
  • the vertical column 1 may be connected with a greater or lesser number of the rods than are used in 'the embodiment described and means other than the hydraulic means shown in FIGURES and 6 may also be used for tensioning the tie rods.
  • a machine tool comprising a bed, a table mounted on said bed for supporting a work piece to be machined, a unitary vertical column having its bottom surface seated on said bed adjacently to said table, a tool carrying assembly mounted on said vertical column for working on a piece supported on said table, and vertically disposed means for rigidly securing said column and bed together and for subjecting said vertical column and all supporting surface portions of the vertical column and bed at the juncture thereof prestressed in compression, said means comprising a plurality of prestressed tie rods being fastened along at least three locations near the perimenter of the cross-sectionalarea of said column to effect compressive stresses on said vertical column and at all of said supporting juncture surface portions of the column and bed, means connecting an upper portion of each prestressed tie rod to the upper portion of said column, and means connecting a lower portion of each prestressed tie rod to said bed, said tie rods each being prestressed to a precise predetermined tension effected by means capable of applying thereto a
  • a machine tool wherein said means connecting the upper portions of each tie rod to said column is seated on the upper end of the associated channel in said vertical column and transmits the pressure of the tie rod thereto, and said means connecting a lower portion of each tie rod to said bed is seated on the lower end of the associated channel in said bed and transmits the pressure of the tie rod thereto-- 5.
  • a machine tool wherein said bed is mounted on a foundation and each of said tie rods passes through said vertical column, said bed and said foundation and is connected at one of its ends to the upper end of said vertical column and at its other end to the underside of said foundation to thereby hold said vertical column, bed and foundation under prestressed compression.
  • a machine tool according to Claim 5 wherein a wedge assembly is positioned between said foundation and said bed.
  • a machine tool comprising hydraulic means for tensioning said tie rod, said hydraulic means comprising a hydraulic cylinder adapted to be supported on said vertical column, a piston slidable in said cylinder and adaptedto be removably connected with said tie rod and a pump for supplying pressure fluid to the chamber of said cylinder through an hydraulic circuit containing a manometer and a relief valve.
  • a machine tool in which said unitary vertical column is hollow throughout the length of the portions of the tie rods extending through such column, and said tie rods are circumferentially arranged in spaced relation around the exterior wall of said hollow column.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Presses And Accessory Devices Thereof (AREA)
  • Earth Drilling (AREA)
US688156A 1966-12-20 1967-12-05 Machine tool Expired - Lifetime US3523484A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR88182A FR1532276A (fr) 1966-12-20 1966-12-20 Bâti de machine-outil perfectionné à au moins un montant

Publications (1)

Publication Number Publication Date
US3523484A true US3523484A (en) 1970-08-11

Family

ID=8622724

Family Applications (1)

Application Number Title Priority Date Filing Date
US688156A Expired - Lifetime US3523484A (en) 1966-12-20 1967-12-05 Machine tool

Country Status (5)

Country Link
US (1) US3523484A (ru)
DE (1) DE1602974A1 (ru)
FR (1) FR1532276A (ru)
GB (1) GB1214648A (ru)
SU (1) SU401038A3 (ru)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4921781A (ru) * 1972-06-22 1974-02-26
JPS5269080U (ru) * 1976-09-06 1977-05-23
US5258040A (en) * 1982-09-10 1993-11-02 W. L. Gore & Associates Prosthesis for tensile load-carrying tissue and method of manufacture
ITBS20090234A1 (it) * 2009-12-22 2011-06-23 Camozzi Machine Tools S P A Macchina utensile a montante verticale
EP2561954A1 (de) * 2011-08-23 2013-02-27 KERN Micro- und Feinwerktechnik GmbH & Co. KG Maschinenständer einer Werkzeugmaschine
US20130149055A1 (en) * 2011-12-13 2013-06-13 Alex-Tech Machinery Industrial Co., Ltd. Machine tool
ITBS20130012A1 (it) * 2013-02-07 2014-08-08 Innse Berardi S P A Macchina utensile con dispositivo per il contrasto del peso della testa di lavorazione
EP2829359A3 (en) * 2013-05-31 2015-09-23 Prime Supply Inc. Improved abrasive device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS579535Y2 (ru) * 1977-12-12 1982-02-24

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4921781A (ru) * 1972-06-22 1974-02-26
JPS5269080U (ru) * 1976-09-06 1977-05-23
US5258040A (en) * 1982-09-10 1993-11-02 W. L. Gore & Associates Prosthesis for tensile load-carrying tissue and method of manufacture
ITBS20090234A1 (it) * 2009-12-22 2011-06-23 Camozzi Machine Tools S P A Macchina utensile a montante verticale
EP2338639A1 (en) * 2009-12-22 2011-06-29 Camozzi Machine Tools S.p.A. Column machine tool
EP2561954A1 (de) * 2011-08-23 2013-02-27 KERN Micro- und Feinwerktechnik GmbH & Co. KG Maschinenständer einer Werkzeugmaschine
US20130149055A1 (en) * 2011-12-13 2013-06-13 Alex-Tech Machinery Industrial Co., Ltd. Machine tool
ITBS20130012A1 (it) * 2013-02-07 2014-08-08 Innse Berardi S P A Macchina utensile con dispositivo per il contrasto del peso della testa di lavorazione
WO2014122510A1 (en) * 2013-02-07 2014-08-14 Innse-Berardi S.P.A. Machine tool with a device for acting against the weight of a machining head
US10730157B2 (en) 2013-02-07 2020-08-04 Innse-Berardi S.P.A. Machine tool with a device for acting against the weight of a machining head
EP2829359A3 (en) * 2013-05-31 2015-09-23 Prime Supply Inc. Improved abrasive device

Also Published As

Publication number Publication date
SU401038A3 (ru) 1973-10-01
GB1214648A (en) 1970-12-02
FR1532276A (fr) 1968-07-12
DE1602974A1 (de) 1970-11-05

Similar Documents

Publication Publication Date Title
US3523484A (en) Machine tool
US4553795A (en) Mold supporting arrangement
US3800636A (en) Concrete frame machines
CN102528538A (zh) 一种阀门阀体的加工方法及装夹夹具和加工设备
US4459909A (en) Mold supporting arrangement in a press
KR101725405B1 (ko) 솔 플레이트의 강판부재 측면가공용 고정유닛
FI76012B (fi) System foer att med en faestpress faesta bearbetbara stycken vid en arbetsmaskin.
US4546572A (en) Belt grinding machine
US4311091A (en) Rapid-separation mounting arrangement for rollers of a calendering machine
US4240342A (en) Frame structure for a press assembly
US5504987A (en) Device for manufacturing a screening body
US3592131A (en) Hydraulic cylinder apparatus
US3656860A (en) Device for correcting bending of a horizontal machine-tool support element
US3802310A (en) Precision punch press
US3563167A (en) Frames for presses
CN219413397U (zh) 一种可调式压缩弹簧缓冲机构
US3168851A (en) Multi-combination machines for machining workpieces of large dimension that have a general form of revolution
JPH044049B2 (ru)
US3468196A (en) Drilling head movable horizontally and vertically
US5105693A (en) Machine tool with movable positioning device
EP0006899A4 (en) BAYONET FIXING DEVICE FOR MACHINE TOOLS.
DE2808608A1 (de) Vorrichtung zum erleichtern des ausrichtens schwerer werkstuecke auf einem maschinentisch
US3223407A (en) Precision vise
CN212600316U (zh) 加工航空发动机环形机匣用夹具
US5044616A (en) Locating device for workpiece-processing apparatus