EP1907168A1 - Werzeugmaschine mit zwei spannstellen auf getrennten schlitten - Google Patents

Werzeugmaschine mit zwei spannstellen auf getrennten schlitten

Info

Publication number
EP1907168A1
EP1907168A1 EP06721959A EP06721959A EP1907168A1 EP 1907168 A1 EP1907168 A1 EP 1907168A1 EP 06721959 A EP06721959 A EP 06721959A EP 06721959 A EP06721959 A EP 06721959A EP 1907168 A1 EP1907168 A1 EP 1907168A1
Authority
EP
European Patent Office
Prior art keywords
workpiece
machine tool
axis
tool
movement
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.)
Ceased
Application number
EP06721959A
Other languages
German (de)
English (en)
French (fr)
Inventor
Lukas Betschon
Christian Glaus
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.)
STARRAGHECKERT AG
Original Assignee
STARRAGHECKERT AG
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 STARRAGHECKERT AG filed Critical STARRAGHECKERT AG
Publication of EP1907168A1 publication Critical patent/EP1907168A1/de
Ceased legal-status Critical Current

Links

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
    • B23Q1/44—Movable or adjustable work or tool supports using particular mechanisms
    • B23Q1/50—Movable or adjustable work or tool supports using particular mechanisms with rotating pairs only, the rotating pairs being the first two elements of the mechanism
    • B23Q1/54—Movable or adjustable work or tool supports using particular mechanisms with rotating pairs only, the rotating pairs being the first two elements of the mechanism two rotating pairs only
    • 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
    • B23Q1/44—Movable or adjustable work or tool supports using particular mechanisms
    • B23Q1/56—Movable or adjustable work or tool supports using particular mechanisms with sliding pairs only, the sliding pairs being the first two elements of the mechanism
    • B23Q1/60—Movable or adjustable work or tool supports using particular mechanisms with sliding pairs only, the sliding pairs being the first two elements of the mechanism two sliding pairs only, the sliding pairs being the first two elements of the mechanism
    • B23Q1/62—Movable or adjustable work or tool supports using particular mechanisms with sliding pairs only, the sliding pairs being the first two elements of the mechanism two sliding pairs only, the sliding pairs being the first two elements of the mechanism with perpendicular axes, e.g. cross-slides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B23/00—Tailstocks; Centres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C1/00—Milling machines not designed for particular work or special operations
    • B23C1/06—Milling machines not designed for particular work or special operations with one vertical working-spindle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C3/00—Milling particular work; Special milling operations; Machines therefor
    • B23C3/16—Working surfaces curved in two directions
    • B23C3/18—Working surfaces curved in two directions for shaping screw-propellers, turbine blades, or impellers
    • 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
    • B23Q1/44—Movable or adjustable work or tool supports using particular mechanisms
    • B23Q1/56—Movable or adjustable work or tool supports using particular mechanisms with sliding pairs only, the sliding pairs being the first two elements of the mechanism
    • B23Q1/60—Movable or adjustable work or tool supports using particular mechanisms with sliding pairs only, the sliding pairs being the first two elements of the mechanism two sliding pairs only, the sliding pairs being the first two elements of the mechanism
    • B23Q1/62—Movable or adjustable work or tool supports using particular mechanisms with sliding pairs only, the sliding pairs being the first two elements of the mechanism two sliding pairs only, the sliding pairs being the first two elements of the mechanism with perpendicular axes, e.g. cross-slides
    • B23Q1/621—Movable or adjustable work or tool supports using particular mechanisms with sliding pairs only, the sliding pairs being the first two elements of the mechanism two sliding pairs only, the sliding pairs being the first two elements of the mechanism with perpendicular axes, e.g. cross-slides a single sliding pair followed perpendicularly by a single sliding pair
    • B23Q1/623—Movable or adjustable work or tool supports using particular mechanisms with sliding pairs only, the sliding pairs being the first two elements of the mechanism two sliding pairs only, the sliding pairs being the first two elements of the mechanism with perpendicular axes, e.g. cross-slides a single sliding pair followed perpendicularly by a single sliding pair followed perpendicularly by a single rotating pair
    • 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
    • B23Q39/00—Metal-working machines incorporating a plurality of sub-assemblies, each capable of performing a metal-working operation
    • B23Q39/02—Metal-working machines incorporating a plurality of sub-assemblies, each capable of performing a metal-working operation the sub-assemblies being capable of being brought to act at a single operating station
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C2215/00—Details of workpieces
    • B23C2215/44—Turbine blades
    • 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
    • Y10T29/00—Metal working
    • Y10T29/51—Plural diverse manufacturing apparatus including means for metal shaping or assembling
    • Y10T29/5104—Type of machine
    • Y10T29/5109—Lathe
    • Y10T29/5114—Lathe and tool
    • 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
    • Y10T409/303752—Process
    • Y10T409/303808—Process including infeeding
    • 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
    • Y10T409/304536—Milling including means to infeed work to cutter
    • Y10T409/305544—Milling including means to infeed work to cutter with work holder
    • Y10T409/305656—Milling including means to infeed work to cutter with work holder including means to support work for rotation during operation
    • 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
    • Y10T409/306664—Milling including means to infeed rotary cutter toward work
    • Y10T409/307672—Angularly adjustable cutter head

Definitions

  • the invention relates to a machine tool for milling workpieces, which is provided with a tool carrier for receiving a chip-removing and rotationally driven machining tool having a workpiece holder in which a workpiece is clamped between two clamping points, wherein the machine tool has a plurality of driven axes of movement Movement axes are provided to produce individually or in combination with each other, spatiallyvorschubterrorismen as Reiativterrorism the machining tool with respect to the workpiece during machining of the tool on the workpiece, wherein the tool carrier with at least one linear axis of movement of the driven axes of movement and the workpiece holder with at least two physically separated Carriage is provided on each of which one of the clamping points is arranged, the two carriages of the workpiece holder together along at least one driven linear movement axis are movable.
  • the invention is therefore an object of the invention to provide a machine tool of the type mentioned above with a workpiece holder with more favorable properties, in particular a more variable workpiece holder, in which equally good conditions for a high manufacturing accuracy are available even for very different lengths of workpieces.
  • prerequisites for machine tools according to the invention should as far as possible also be present for the machine tool to have a high degree of rigidity against deformation.
  • the preferably associated with the two slides linear motion guides for machining feed movements should preferably be aligned in pairs parallel to each other se i n.
  • D i e movement axes of these linear motion guides can advantageously on the one hand parallel to a L Lucass St. Clamping axis of the workpiece and on the other hand be aligned transversely thereto to allow both clamping points or slide the workpiece holder driven machining feed movements in two mutually perpendicular directions. Since two linear axes of motion are thus placed in the workpiece in such embodiments, such machine tools can be made particularly compact and rigid despite the functionality according to the invention.
  • a particular rigid machine design which has the advantages of the inventive machine concept, can be achieved if the tool carrier is not assigned more than two linear axes of movement.
  • the tool carrier is therefore movable in only two and the workpiece holder in likewise only two linear machining feed axes.
  • both the tool carrier and the workpiece holder have the smallest possible number of linear axes of movement, which leads to high manufacturing accuracy of machine tools according to the invention.
  • At least the movements of the two clamping points along a movement feed axis should be synchronized with each other.
  • Such a synchronization can preferably be carried out with a hardware-based software-based control as part of the control ' .
  • the mechanically separated traversability of the two clamping points or .. slide along the same axis can be achieved with very little design effort, if both carriages are arranged on the same rails of the purpose provided linear motion guides.
  • For the synchronous movement of the two clamping points detectors for determining momentary Positions of both clamping points be present. Their signals should be fed to a controller. Due to the detection signals, the controller can make a comparison between the setpoint and actual positions of the two carriages or the speed of the two synchronously moving carriages.
  • the controller may also contain one or more control loops.
  • pivot axis preferably includes an acute angle with the tool axis of the clamped tool.
  • the pivot axis and the tool axis should intersect, at least pass very close to one another, wherein the point of intersection or the point with the smallest distance should be in the region of the tool tip.
  • a machine tool according to the invention may further comprise a round station, from the two clamping points of the workpiece can be added and offset during the processing of the workpiece latter in rotational movements, which is provided as a machining feed movement or as a component of the feed movement of the workpiece relative to the milling tool.
  • the round station can perform endless rotational movements.
  • FIG. 1 shows a perspective view of a machine tool according to the invention
  • FIG. 2 is a side view of the machine tool of FIG. 1.
  • the machine tool shown in highly schematic form in FIG. 1 is provided with a machine frame 1, on the upper side of which a first slide 2 is arranged.
  • the carriage 2 is movable in the X direction of a Cartesian coordinate system.
  • the mobility of the carriage 2 is achieved by two mutually parallel linear motion guides, in which a plurality of carriages 3, 4 are arranged on linear motion rails 5.
  • Such linear motion guides, in which circulate in the carriage 3, 4 rolling elements in circulation channels are many previously known.
  • the carriages 3, 4 are fixedly mounted on the machine frame 1, while the rails 5 are mounted on the movable carriage 2.
  • the carriage 2 is provided with an inclined surface 6, on which a tool slide 7 is arranged. By means of two not shown further linear motion guides the tool carriage 7 is movable on this surface 6 in the X and Z directions.
  • a tool carrier 8 On the tool carriage 7, a tool carrier 8 is mounted, in which a milling tool 9 is received and a machining axis 10 by a
  • Tool drive 1 1 can be set in rotation.
  • Rotational movement may be that required for machining
  • a round station As a workpiece holder
  • the round station 15 which is provided with two clamping points 16, 17, between which a workpiece can be clamped.
  • the round station 15 is provided with a rotary drive 16a, 17a, with which the respective workpiece is rotatable about a clamping axis 18.
  • the rotary drive 16a, 17a of the round station 15 can, for example, the clamping point
  • both clamping points 16, 17 each have their own rotary drive 16a, 17a.
  • Each of the clamping parts 16, 17 is arranged on a clamping point carrier 19, 20, which is movable parallel to the Z-axis via two parallel linear movement guides.
  • the two clamping plate supports 19, 20 are each provided with a separate drive (not shown), with which mutually independent translational movements of the clamping plate carriers can be performed. This may be important especially if a workpiece is held only by one of the clamping point 16, 17.
  • both clamping points 16, 17 simultaneously used for receiving a workpiece the movements of the two clamping plate support 19, 20 should be synchronized with each other, for example by means of suitable sensors, with the positions of the two clamping points 16, 17 along the Z-axis constantly determined , compared and, if necessary, aligned with each other.
  • At least one linear motion guide of each of the two clamping points 16, 17 a glass scale with optical read head may be provided which determines an absolute position of the respective clamping point 16, 17 with respect to a reference point.
  • suitable glass scales are, for example, offered by the company. Heidenhein (for example, the product
  • the signals of the read heads are supplied to an electronic control of the machine tools, not shown in detail, compared with it and optionally by switching on one or both drives of the two
  • a control loop may be provided which performs a readjustment until, taking into account a predetermined tolerance, both clamping points either have a predetermined distance and speed or are predetermined at the clamping point for each clamping point
  • the rails 23, 24, 25, 26 of the linear motion guide for the Z-axis of each of the two clamping plate supports 19, 20 are in turn respectively on top of a respective clamping plate carrier 19, 20 associated carriage 27, 28 are arranged.
  • both carriages 27, 28 are located on the underside of other linear motion guides, with which the carriage 27, 28 synchronously or independently translatable in the Y direction.
  • the Y-axis of the machine tool has two rails 29, 30, which are connected to the machine frame, of motion guides.
  • Carriage 31, 32; 33, 34, 35, 36 of this Ünearschis Centeren are attached to the carriage, with carriage 31, 32; 33, 34, 35, 36 of both carriages 27, 28 are arranged on the same rails 29, 30. Because of this structural design and the resulting mobility of the clamping plate carrier 19, 20 in the Y and in the Z direction, the clamping plate carriers are each a cross slide.
  • All of the carriages shown here may be provided with commercially available servomotors, not shown in more detail (for example, the type 1 FT6084-1AF71 offered by Siemens), the rotational movement of each of which is converted into a translational movement via a belt drive and a ball screw.
  • servomotors for example, the type 1 FT6084-1AF71 offered by Siemens
  • linear direct drives can also be used, for example similar to the type 1 FN3600-4WC00-0AA0 also offered by Siemens.
  • Blades of turbines or compressors are blades of turbines or compressors.
  • Clamp the workpiece are the two clamping points 16, 17 first on the Y-
  • the tool 9 Due to the described alignment of the pivot axis 14 and the pivoting of the tool 9 about this axis, the tool 9 describes in these pivotal movements a path corresponding to a portion of a lateral surface of a cone, wherein the cone tip is located in the tool tip. Despite the pivoting movement thus the cone tip remains in its spatial position with respect to the coordinate system.
  • the tool 9 can always be aligned optimally on the workpiece surface, which is known to be of crucial importance for achieving good surfaces on the workpiece.
  • the tool holder 8 sets with increasing size of the pivoting movement together with the tool 9 next to the workpiece. This allows for very large tilt angle, which always allows at least a good alignment of the tool on the workpiece for the milling process. Since a balanced load on both clamping points 16, 17 can also be achieved by the invention, overall high-quality work results are possible with such machine tools.
  • the two clamping points in the Y direction with a comparatively large distance and also in the Z direction can be arranged with distance from each other, a one-sided clamping of a workpiece and its frontal processing is possible. A production clamping accuracy detrimental second clamping of the workpiece can be avoided, which is why with machine tools according to the invention even such machining with high manufacturing accuracy are possible.
  • axles that are movable separately and simultaneously.
  • the movements are usually generated and controlled by the electronic control, processed in the programs for the production of workpieces and, where appropriate, can be stored in suitable storage means.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Machine Tool Units (AREA)
  • Turning (AREA)
EP06721959A 2005-05-16 2006-05-15 Werzeugmaschine mit zwei spannstellen auf getrennten schlitten Ceased EP1907168A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH8562005 2005-05-16
PCT/CH2006/000257 WO2006122440A1 (de) 2005-05-16 2006-05-15 Werzeugmaschine mit zwei spannstellen auf getrennten schlitten

Publications (1)

Publication Number Publication Date
EP1907168A1 true EP1907168A1 (de) 2008-04-09

Family

ID=35428105

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06721959A Ceased EP1907168A1 (de) 2005-05-16 2006-05-15 Werzeugmaschine mit zwei spannstellen auf getrennten schlitten

Country Status (7)

Country Link
US (1) US20080213057A1 (ko)
EP (1) EP1907168A1 (ko)
JP (1) JP2008540145A (ko)
KR (1) KR20080018166A (ko)
CN (1) CN101193727A (ko)
DE (1) DE202006020904U1 (ko)
WO (1) WO2006122440A1 (ko)

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Also Published As

Publication number Publication date
DE202006020904U1 (de) 2010-09-23
KR20080018166A (ko) 2008-02-27
CN101193727A (zh) 2008-06-04
WO2006122440A1 (de) 2006-11-23
JP2008540145A (ja) 2008-11-20
US20080213057A1 (en) 2008-09-04

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