US3730051A - Support adjusting device - Google Patents

Support adjusting device Download PDF

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Publication number
US3730051A
US3730051A US00002477A US3730051DA US3730051A US 3730051 A US3730051 A US 3730051A US 00002477 A US00002477 A US 00002477A US 3730051D A US3730051D A US 3730051DA US 3730051 A US3730051 A US 3730051A
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US
United States
Prior art keywords
spindle
support
spindles
cylinder
transverse
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
US00002477A
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English (en)
Inventor
E Hatzig
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.)
Waldrich H dt GmbH
Waldrich H GmbH
Original Assignee
Waldrich H GmbH
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 Waldrich H GmbH filed Critical Waldrich H GmbH
Application granted granted Critical
Publication of US3730051A publication Critical patent/US3730051A/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
    • 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
    • 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
    • Y10T408/92—Machine frame with counterweight mechanism
    • 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
    • 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
    • Y10T83/00—Cutting
    • Y10T83/141—With means to monitor and control operation [e.g., self-regulating means]
    • Y10T83/148—Including means to correct the sensed operation

Definitions

  • a device is used for correcting the bearing of transverse carriers of single post and double post machine tools with tool holders movable upon the carriers.
  • the device is particularly characterized by electrical or hydraulic tensioning devices which engage lower ends of spindles. These tensioning devices exert a force which varies depending upon the load of the ends of spindles by the support location and amplify it to a constant total tension.
  • This invention relates to a device for correcting the position of transverse carriers of single post and double post machine tools, such as postal milling machines, boring machines, planing machines, surface polishing machines and lathes, as well as combinations of these machines.
  • An object of the present invention is the provision of a device operable upon a different principle than those of prior devices and having a greater precision than prior devices.
  • the actual constructional embodiment can be accomplished hydraulically or pneumatically in a simple manner by providing the lower end of the spindle with a piston or causing it to cooperate with a piston which is movable in a fixed cylinder, for example, a cylinder fixed to the post. Transmitting means, possibly with gears, can be provided between the piston and the lower end of the spindle so that, for example, it is also possible to let the cylinder operate horizontally when this is deemed advisable due to available locations or other constructional considerations.
  • the lower end of the spindle can be provided with a drive, such as a drive corresponding to known differential gears, whereby it is advisable to insert between this point of engagement of the pulling force and the lower end of the spindle a spring package for balancing purposes and also for the utilization of its spring characteristics.
  • a drive such as a drive corresponding to known differential gears
  • the present invention can be used also in the reverse manner, namely, the arrangement can be such that, as in known balancing devices, the lower ends of spindles are firmly fixed while balancing drives engage the upper ends of spindles.
  • these drives are operative not by auto-collimation but by measuring tensions in the spindle or by changes in the position of support or supports.
  • the weight of the transverse beam is 12 t. and the support weight when only one support is used is 8 t.
  • each spindle In the central position of the support each spindle is subjected to one half of the weight of the transverse beam plus one half of the weight of the support, or a total of 10 t.
  • each spindle receives an additional pressure or tension of 10L
  • each spindle is subjected below the bolt of the transverse beam to a load of 10 t., while above the bolt of the transverse beam the spindles are subjected to a load of 20 t. This total load above the bolt of the transverse beam must be mentained constant when the support is moved to one side out of the middle position.
  • the support is moved up to the right-hand spindle, then this spindle in addition to one half of the transverse beam weight is loaded with the .entire support weight, that is, with 14 t.
  • the left hand spindle on the other hand, then carries a load corresponding to one half of the weight of the transverse beam, namely, 6 t. Therefore, if the present invention is not utilized the part of the right hand spindle above the transverse beam bolt would carry the load of 24 t. while the corresponding part of the left hand spindle would carry 16 t.
  • the present invention must change the tension in that the tension device of the present invention must add 4 t. to the load of the left hand spindle and must diminish the load of the right hand spindle to the extent of 4 t., so that both spindles will be again subjected to a load of 20t. each.
  • the present invention provides that the actuation should take place through gauging devices in the head of the spindle which continuously measure the force affecting the spindle and provide tension uniformity in both spindles by a balancing switching device and the device of the present invention providing additional load. This is of particular importance for milling with vertical feed of the transverse beam.
  • the present invention can be also applied to one stand machine tools wherein it is necessary to maintain constant the torque which changes corresponding to the changes in position of the support upon the transverse carrier, at the base of the stand and also upon the transverse carrier itself, whereby the same conditions apply as have been described already in connection with spindles for machine tools having two stands.
  • the upper end of the stand can be provided with an iron tie or a pressure device by means of which the transverse carrier can be always maintained in a horizontal position depending upon the variable torque produced by the location of the support.
  • the iron tie can be fixed at the stand by a separate slide since this provides the possibility of compensating for the change in the location of the transverse beam caused by play in the guides of the transverse carrier at the stands.
  • Bendings of the stand itself can be balanced by an iron tie or the like engaging at an acute angle and outside of the swinging range of the stand.
  • an iron tie or the like engaging at an acute angle and outside of the swinging range of the stand.
  • These arms can be swingable jointly with the transverse carrier and can .engage iron ties or the like at its outer free ends.
  • the iron ties extend to the base of the stand and their force is so regulated that the horizontal location as well as the high position of the transverse carrier are kept constant independantly of the location of the support or the supports.
  • FIGURE is a digrammatic from view of a two stand portal machine tool with two supports.
  • This embodiment of the present invention is shown by way of example only and parts which are not important for the purposes of the present invention have been left out.
  • the portal of the illustrated machine consists of a right-hand stand 1 and a left hand stand 2 which are connected by a yoke 3.
  • Spindles 4 and 5 are mounted in upper longitudual pressure bearings 6 in the stands and are rotatable by a worm drive 7.
  • a transverse carrier 8 is vertically adjustable by screws 9.
  • Two supports 10 and l l are slidable upon the transverse carrier, the supports being shown in symmetrical positions in the drawmg.
  • Bearing brackets 12 are provided in the lower ends of the stands 1 and 2. According to the present invention cylinders 13 are firmly fixed in these brackets. Pistons 14 are movable in these cylinders and their upper surfaces are engaged by pressure conduits l5. Piston rods 16 transmit the actions of the pistons to bearing sockets 17. The lower ends 18 of the spindles held in ball bearings 19 are carried by the sockets 17. The sockets 17 are secured against rotation in the brackets 12 but are movable longitudinally.
  • Pressure is regulated by an extension strip (not shown) which is located upon the upper end of each spindle and which acts as the servo-regulator for the driving motor 20 of a hydraulic pump 21 connected with each spindle.
  • the pump transmits the pressure medium from a supply container 22 though a conduit 23 on the one hand to the conduit 15 directed to the piston 13 and on the other hand to a throttle 24 and a regulating valve having a closing part 27 and a flow part 28, the valve being operated electrically by a relay 25 and subjected to the action of a return spring 26.
  • oil can flow back to a container 30 which can be combined with the container 22.
  • the drawing shows diagrammatically means 31 actuating the tensioning device depending upon the location of the support 10 upon the carrier 8, and adding and subtracting device 32, a balancing drive 33, a spring package 34 and an iron tie 35.
  • a tensioning device for correcting the bearing of the transverse carrier comprising a separate socket connected with one end of each spindle, a separate cylinder fixed in each stand, a piston movable in said cylinder, a spring package located between said piston and said socket, and means supplying a pressure medium to said cylinder to exert a force variable depending upon the load on the spindle ends, said means comprising a regulatable motor, a hydraulic pump connected with said motor, a container for the pressure medium connected with said pump, a conduit connected with said cylinder, another conduit connected with said pump and the first-mentioned conduit, a regulating valve connected with the first-mentioned conduit, electrical means operating said valve, and another container connected with said valve.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Machine Tool Units (AREA)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)
US00002477A 1969-01-11 1970-01-13 Support adjusting device Expired - Lifetime US3730051A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1901363A DE1901363C3 (de) 1969-01-11 1969-01-11 Anordnung zur Lageberichtigung von Querträgern an Zweiständer-Werkzeugmaschinen

Publications (1)

Publication Number Publication Date
US3730051A true US3730051A (en) 1973-05-01

Family

ID=5722221

Family Applications (1)

Application Number Title Priority Date Filing Date
US00002477A Expired - Lifetime US3730051A (en) 1969-01-11 1970-01-13 Support adjusting device

Country Status (4)

Country Link
US (1) US3730051A (enExample)
DE (1) DE1901363C3 (enExample)
FR (1) FR2028150A1 (enExample)
GB (1) GB1302351A (enExample)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4354404A (en) * 1979-03-27 1982-10-19 Innocenti Santeustacchio S.P.A. Arrangement for increasing the precision of a machine tool
US5297907A (en) * 1992-02-14 1994-03-29 Climax Portable Machine Tools, Inc. Portable machine tool
US5425607A (en) * 1994-07-13 1995-06-20 Thermwood Corporation Anti-whip device for machine drive screws
US6302315B1 (en) 2000-05-01 2001-10-16 General Tool Company Friction stir welding machine and method
EP1128931A4 (en) * 1998-08-18 2001-11-14 Unova Ind Automation Sys Inc METHOD FOR ERROR COMPENSATING ANGLE ERRORS DURING A PROCESSING PROCESS (INCLINATION CORRECTION)
US20050031429A1 (en) * 2003-07-15 2005-02-10 Kazuyuki Hiramoto Machine tool

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113588422B (zh) * 2021-08-06 2023-03-21 东南大学 一种在单柱上施加水平荷载和竖向荷载的试验装置及其试验方法

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2171519A (en) * 1938-08-20 1939-09-05 Norton Co Hydraulically operated surfacegrinding machine
US2759378A (en) * 1954-12-08 1956-08-21 Genevoise Instr Physique Machine-tool
US2899869A (en) * 1955-09-02 1959-08-18 Suspension mechanism for machine tools
US2901947A (en) * 1954-04-07 1959-09-01 Waninger Gilbert Adjustment of machine parts
US2912905A (en) * 1952-05-16 1959-11-17 Const De Machines Outils Et D Bracing device for overhanging machine member
US3008381A (en) * 1958-01-02 1961-11-14 Method and means of machine support
US3027813A (en) * 1958-08-01 1962-04-03 Ingersoll Milling Machine Co Rail leveling system
US3233521A (en) * 1963-11-27 1966-02-08 Giddings & Lewis Rail leveling device
US3524248A (en) * 1967-09-13 1970-08-18 Heller Geb Gmbh Maschf Machine tool with automatic tool changing

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2171519A (en) * 1938-08-20 1939-09-05 Norton Co Hydraulically operated surfacegrinding machine
US2912905A (en) * 1952-05-16 1959-11-17 Const De Machines Outils Et D Bracing device for overhanging machine member
US2901947A (en) * 1954-04-07 1959-09-01 Waninger Gilbert Adjustment of machine parts
US2759378A (en) * 1954-12-08 1956-08-21 Genevoise Instr Physique Machine-tool
US2899869A (en) * 1955-09-02 1959-08-18 Suspension mechanism for machine tools
US3008381A (en) * 1958-01-02 1961-11-14 Method and means of machine support
US3027813A (en) * 1958-08-01 1962-04-03 Ingersoll Milling Machine Co Rail leveling system
US3233521A (en) * 1963-11-27 1966-02-08 Giddings & Lewis Rail leveling device
US3524248A (en) * 1967-09-13 1970-08-18 Heller Geb Gmbh Maschf Machine tool with automatic tool changing

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4354404A (en) * 1979-03-27 1982-10-19 Innocenti Santeustacchio S.P.A. Arrangement for increasing the precision of a machine tool
US5297907A (en) * 1992-02-14 1994-03-29 Climax Portable Machine Tools, Inc. Portable machine tool
US5425607A (en) * 1994-07-13 1995-06-20 Thermwood Corporation Anti-whip device for machine drive screws
EP1128931A4 (en) * 1998-08-18 2001-11-14 Unova Ind Automation Sys Inc METHOD FOR ERROR COMPENSATING ANGLE ERRORS DURING A PROCESSING PROCESS (INCLINATION CORRECTION)
US6302315B1 (en) 2000-05-01 2001-10-16 General Tool Company Friction stir welding machine and method
US6554175B1 (en) 2000-05-01 2003-04-29 General Tool Company Friction stir welding machine and method
US20030209586A1 (en) * 2000-05-01 2003-11-13 General Tool Company Friction stir welding machine and method
US6742696B2 (en) 2000-05-01 2004-06-01 General Tool Company Friction stir welding machine
US20050031429A1 (en) * 2003-07-15 2005-02-10 Kazuyuki Hiramoto Machine tool
US7237991B2 (en) * 2003-07-15 2007-07-03 Mori Seiki Co., Ltd. Machine tool

Also Published As

Publication number Publication date
GB1302351A (enExample) 1973-01-10
DE1901363B2 (de) 1973-05-10
FR2028150A1 (enExample) 1970-10-09
DE1901363C3 (de) 1973-11-22
DE1901363A1 (de) 1970-09-03

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