US3650133A - Longitudinal carriage drive for co-ordinates tables in machine tools, particularly punching machines - Google Patents

Longitudinal carriage drive for co-ordinates tables in machine tools, particularly punching machines Download PDF

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Publication number
US3650133A
US3650133A US3650133DA US3650133A US 3650133 A US3650133 A US 3650133A US 3650133D A US3650133D A US 3650133DA US 3650133 A US3650133 A US 3650133A
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United States
Prior art keywords
longitudinal carriage
longitudinal
tables
drive
machine
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Expired - Lifetime
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English (en)
Inventor
Walter Bredow
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C Behrens AG
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C Behrens AG
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Publication date
Application filed by C Behrens AG filed Critical C Behrens AG
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Publication of US3650133A publication Critical patent/US3650133A/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D28/00—Shaping by press-cutting; Perforating
    • B21D28/24—Perforating, i.e. punching holes
    • B21D28/26—Perforating, i.e. punching holes in sheets or flat parts
    • B21D28/265—Perforating, i.e. punching holes in sheets or flat parts with relative movement of sheet and tools enabling the punching of holes in predetermined locations of the sheet, e.g. holes punching with template
    • 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
    • Y10T83/647—With means to convey work relative to tool station
    • Y10T83/654—With work-constraining means on work conveyor [i.e., "work-carrier"]

Definitions

  • Stems ABSTRACT A longitudinal carriage drive for co-ordinates tables in machine tools for impelling the carriages on co-ordinates tables, particularly the longitudinal carriage, with the transverse carriage moving thereupon transversely to the longitudinal axis of the machine, and to the material to be punched held fast thereto, in which a power transmission by two screwthreaded spindles is provided to the left and right of the center of the machine, which receive their drive synchronously from a motor arranged at about the middle of the table.
  • This invention relates to the longitudinal carriage drive for coordinates tables in machine tools, particularly punching or stamping machines, for the transporting of the carriages on the coordinates tables, particularly of the longitudinal carriage, with the transverse carriage moving thereupon transversely to the longitudinal axis of the machine, and with the material to be punched or stamped held fast thereon, with power-transmission by screw-threaded spindles.
  • the invention is particularly advantageous with
  • the invention consists in the feature that to the left and right of the center of the machine two threaded spindles are arranged, which receive their drive synchronously from a common driving motor arranged on about the center of the table. It has been found particularly advantageous in this case to employ ball rotary spindles, which, in consequence of the initial stress of the ball bearings, ensure running practically free from backlash in the transmission of the driving forces. The adoption of such spindles also has the advantage that the coefficient of friction of the driving spindle is completely invariable.
  • the driving motor and the power-transmitting means between this motor and the threaded spindles are arranged symmetrically about the Y-axis of the longitudinal carriage.
  • Such an arrangement provides particularly advantageous presumptions for the accommodation of monitoring appliances, which already show any change of equilibrium between the drives, or even cut out the drive altogether.
  • toothed belt gears are preferred.
  • Such gears provide lightweight steel-armored expansion-free toothed belts, which transmit the driving forces positively and without slipping.
  • toothed belts are associated electrical measured-value receivers, for instance electric generators, which, upon disturbance of the state of equilibrium, switch off the drive. It is also possible to associate light cabinets with the toothed belts.
  • electrical measured-value receivers for instance electric generators
  • light cabinets with the toothed belts.
  • the driving means that are to meet the highest requirements as regards accuracy must remain protected against any disturbance in operation and against overstressing.
  • the arrangement of the monitoring appliances is promoted by the same forces and the same speeds having to occur in each case at the same points in the symmetrically arranged driving system. Any change in the state of equilibrium gives rise to a response from the monitoring appliances, so that disturbances can be directly avoided.
  • a considerable improvement in the accuracy of working of punching machines is also effected, which can thereby be employed in machining operations which require particularly high accuracy.
  • FIG. 1 shows a coordinates table in side elevation
  • FIG. 2 shows a plan view of the coordinates table
  • FIG. 3 shows the coordinates table in front elevation.
  • longitudinal girders 2 and 2' Upon underpart 1 of the table are arranged, to right and left (FIG. 3), longitudinal girders 2 and 2' for the accommodation and guidance of a longitudinal carriage. To the longitudinal girders 2 and 2' are bolted guiding rails 3 and supporting rails 4, upon which the complete longitudinal carriage is guided and supported, respectively.
  • the longitudinal carriage consists essentially of a cross girder 5, with a left-hand roller shoe 6 and a right-hand roller shoe 6', in which supporting rollers 7 and lateral guiding rollers 8 are journaled.
  • roller shoes 6 and 6' To the underside of the roller shoes 6 and 6' are secured holders 9 and 9' for the accommodation of the ball rotary nuts of ball rotary spindles 10, serving advantageously as a drive, for driving the longitudinal carriage; and upon these roller shoes are secured supporting plates 11, 11 for the material to be punched. These bearing surfaces thus accompany the movement of the iongitudinal carriage.
  • the ball rotary spindles 10 are axially mounted in bearing shields 12 and 12 and bearings 13 and 13, which are connected fast, in front and behind, with the longitudinal girders 2 and 2' respectively.
  • a ball rotary nut 19 on the spindle 17 is connected on the other side by its holder with the transverse carriage 18, and to the latter in turn is bolted a clamping rail 20.
  • workpiece-stretchers 21 three in number, for example, are displaceably secured.
  • material 22 to be punched consisting of a plate, represented by dot-and-dash lines, for travelling between the upper and lower turntables of rotary punches.
  • the axial positions of the bearings of these turntables are indicated at 23, and that of one of the tool stations at 24.
  • transverse roller'guided punch-material supporting rails 25 which, upon the punched material being removed towards the left (see FIG. 1), are guided over a descending guiding curve 26 into an open space between the underpart l of the table and the transverse girder 5 of the longitudinal carriage and are there caught up.
  • Guiding and connecting chains 27 for the punched-material rails 25 are pivotally connected by their right-hand ends 28 and 28' with the punched-material supporting plates 11 and 11, and by spring-equipped tension rods 29, in the bearing shields l2, 12', which are secured, under tension, to the front ends of the longitudinal girders 2 and 2'.
  • the longitudinal carriage drive by the ball rotary spindles 10 is effected completely without slip and with the spindles turning synchronously, by a driving motor 41, which is connected by a bearing shield 40 with the front wall of the underpart 1 of the table, with the aid of toothed belts 42, by way of corresponding toothed disc wheels 43.
  • a driving motor 41 which is connected by a bearing shield 40 with the front wall of the underpart 1 of the table, with the aid of toothed belts 42, by way of corresponding toothed disc wheels 43.
  • the power transmitting means between the motor 41 and the spindles are symmetrically arranged about Y-axis of the longitudinal carriage.
  • measured-value receivers for instance electrical generators 44, or, optionally, light sensors 45, which respond to irregular running of the power-transmitting means, or to breakage of a toothed belt, and thereby preclude any injury to the drive, and to the guidance of the longitudinal carriage, by interrupting the drive.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Punching Or Piercing (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Press Drives And Press Lines (AREA)
US3650133D 1968-09-17 1969-09-03 Longitudinal carriage drive for co-ordinates tables in machine tools, particularly punching machines Expired - Lifetime US3650133A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1777180A DE1777180C3 (de) 1968-09-17 1968-09-17 Antriebsvorrichtung für Längswagen an Werkzeugmaschinen, insbesondere Stanzmaschinen

Publications (1)

Publication Number Publication Date
US3650133A true US3650133A (en) 1972-03-21

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ID=5703077

Family Applications (1)

Application Number Title Priority Date Filing Date
US3650133D Expired - Lifetime US3650133A (en) 1968-09-17 1969-09-03 Longitudinal carriage drive for co-ordinates tables in machine tools, particularly punching machines

Country Status (3)

Country Link
US (1) US3650133A (de)
DE (1) DE1777180C3 (de)
GB (1) GB1251113A (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2315366A1 (fr) * 1975-06-23 1977-01-21 So Fine Precision Sheet Metal Machine pour executer des trous
FR2403128A1 (fr) * 1977-09-14 1979-04-13 Raskin Sa Dispositif de protection d'une pince-tole de machine a travailler la tole
US4515050A (en) * 1982-11-09 1985-05-07 Hammerle Ag Maschinenfabrik Apparatus for feeding sheet metal plates to a sheet shear arrangement
US4548115A (en) * 1983-04-28 1985-10-22 Usm Corporation Positioning apparatus
US4669346A (en) * 1986-03-05 1987-06-02 Roper Whitney Co., Division Of Roper Industries, Inc. Machine with work positioning carriage
US4753099A (en) * 1985-09-18 1988-06-28 Trumpf Gmbh & Co. Bending press for sheet metal

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3203348A1 (de) * 1981-02-20 1982-09-09 Hauni-Werke Körber & Co KG, 2050 Hamburg Werkzeugmaschine

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2887914A (en) * 1956-10-19 1959-05-26 Mannesmann Meer Ag Mandrel-protecting device for coldpilger rolling mills
US2901245A (en) * 1958-05-07 1959-08-25 Ty Sa Man Machine Company Plate positioning tables
US3330175A (en) * 1965-09-02 1967-07-11 Bridges Vernon Bruce Moveably supported cut off saw
US3391840A (en) * 1965-10-25 1968-07-09 Du Pont Yarn break detector and control circuit
US3429491A (en) * 1967-05-08 1969-02-25 Du Pont Break detector and shut down means

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2887914A (en) * 1956-10-19 1959-05-26 Mannesmann Meer Ag Mandrel-protecting device for coldpilger rolling mills
US2901245A (en) * 1958-05-07 1959-08-25 Ty Sa Man Machine Company Plate positioning tables
US3330175A (en) * 1965-09-02 1967-07-11 Bridges Vernon Bruce Moveably supported cut off saw
US3391840A (en) * 1965-10-25 1968-07-09 Du Pont Yarn break detector and control circuit
US3429491A (en) * 1967-05-08 1969-02-25 Du Pont Break detector and shut down means

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2315366A1 (fr) * 1975-06-23 1977-01-21 So Fine Precision Sheet Metal Machine pour executer des trous
FR2403128A1 (fr) * 1977-09-14 1979-04-13 Raskin Sa Dispositif de protection d'une pince-tole de machine a travailler la tole
US4515050A (en) * 1982-11-09 1985-05-07 Hammerle Ag Maschinenfabrik Apparatus for feeding sheet metal plates to a sheet shear arrangement
US4548115A (en) * 1983-04-28 1985-10-22 Usm Corporation Positioning apparatus
US4753099A (en) * 1985-09-18 1988-06-28 Trumpf Gmbh & Co. Bending press for sheet metal
US4669346A (en) * 1986-03-05 1987-06-02 Roper Whitney Co., Division Of Roper Industries, Inc. Machine with work positioning carriage

Also Published As

Publication number Publication date
GB1251113A (de) 1971-10-27
DE1777180C3 (de) 1975-02-20
DE1777180B2 (de) 1974-07-11
DE1777180A1 (de) 1971-08-26

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