Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • B23B—TURNING; BORING
  • B23B5/00—Turning-machines or devices specially adapted for particular work; Accessories specially adapted therefor
  • B23B5/28—Turning-machines or devices specially adapted for particular work; Accessories specially adapted therefor for turning wheels or wheel sets or cranks thereon, i.e. wheel lathes
  • B23B5/32—Turning-machines or devices specially adapted for particular work; Accessories specially adapted therefor for turning wheels or wheel sets or cranks thereon, i.e. wheel lathes for reconditioning wheel sets without removing same from the vehicle; Underfloor wheel lathes for railway vehicles
• • 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
  • B23Q9/00—Arrangements for supporting or guiding portable metal-working machines or apparatus
  • B23Q9/0064—Portable machines cooperating with guide means not supported by the workpiece during working
  • B23Q9/0078—Portable machines cooperating with guide means not supported by the workpiece during working the guide means being fixed to a support
• • G—PHYSICS
  • G01—MEASURING; TESTING
  • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
  • G01M99/00—Subject matter not provided for in other groups of this subclass
  • G01M99/007—Subject matter not provided for in other groups of this subclass by applying a load, e.g. for resistance or wear testing
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • B23B—TURNING; BORING
  • B23B2215/00—Details of workpieces
  • B23B2215/36—Railway wheels

Definitions

• the invention relates to a device for calibrating a
• a underfloor wheel lathe without a calibration wheel set comprising: a motor having a rotation axis, a friction roller, and a measuring bridge, the friction roller being connected to the drive shaft of the motor.
• the invention also relates to an underfloor wheel lathe with such a device.
• the invention relates to a method for calibrating a
• Underfloor wheel lathes are widely used machine tools capable of reprofiling wheelsets incorporated on rail vehicles, i. to restore the original wheel disc profile. In addition to the machining of wheel sets installed on the vehicle, these machines are capable of reprofiling individual sets of wheels or wheelsets in bogies.
• the underfloor lathes are often equipped with integrated measuring systems, referred to below as measuring devices, which can measure the state of wear of the wheel set or individual wheel to be reprofiled.
• Measuring device is in addition to this pre-measurement in a position to measure the newly profiled wheelset and evaluate whether the profile produced meets the target specifications.
• the measuring device is usually once per rotary support on such underfloor lathes available to simultaneously measure the left and right wheel disc. It is often located directly next to the lathe axis on which the turning tool is clamped by means of a quick-change device. each These measuring devices are capable of measuring X and Z values to assess the profile of the wheel disc. Furthermore, at such measuring devices
• Measuring rollers are available to determine the diameters of wheelsets that are driven in rotation with the measuring rollers. The same technology is also used in mobile wheelset lathes.
• the invention is based on the object, the
• this object is achieved in that the friction roller has an approximately cylindrical friction surface with a defined
• the device is used to calibrate an underfloor wheel lathe without using a Kalibrierradsatzes.
• the apparatus comprises first a motor with a rotation axis, and a friction roller, wherein the friction roller is connected to the drive shaft of the motor.
• the engine may be, for example, a
• the device also includes a measuring bridge.
• the measuring bridge serves to bridge rails in the transverse direction and a defined nominal dimension in the transverse direction display.
• a motor with an axis of rotation and a friction roller are arranged at both ends of the measuring bridge, so that two measuring devices can be calibrated on opposite sides of the two rails simultaneously.
• the z-direction of the measuring devices can be calibrated at the measuring bridge, which was previously determined by probing the inner wheel surfaces of a
• the motor is used to drive the friction rollers, so that the friction roller rotates about the axis of rotation of the motor.
• the friction roller has an approximately cylindrical friction surface with a defined
• the friction roller can replace a Kalibrierradsatz.
• the friction roller also has a defined dimension, in particular a defined diameter, which can be measured during calibration in order to check whether the measured value agrees with the known nominal dimension a nominal diameter with a tolerance in the range of ⁇ 1/100 mm
• Nominal diameter of the friction roller should have tighter tolerances than is usually the case with Kalibrierrad accountsn, so that a more accurate calibration is possible. It can be provided that the friction roller has two or more sections with different nominal diameters. This allows measurements and calibrations with different diameters, creating a
• the device therefore makes it possible to calibrate the integrated measuring device of underfloor wheel lathes without the need and supply a Kalibrierradsatz.
• the device comprises means for detecting the rotational position of the motor and / or the friction roller.
• the detection of the rotational position serves to be able to carry out an exact calibration.
• an incremental encoder in particular an incremental encoder integrated into the motor, be used as means for detecting the rotational position of the motor and / or the friction roller.
• Incremental encoder allows a particularly precise detection of the rotational position of the motor and / or the friction roller.
• an incremental encoder has the advantage that it can deliver incremental and absolute position values.
• the friction roller is releasably connected, in particular by a clamping set with the drive shaft of the motor.
• a detachable connection of motor and friction roller has the advantage that the friction roller can be easily replaced. That way you can
• a clamping set allows a particularly convenient replacement of the friction roller.
• the motor and / or the friction roller are releasably connected to a tool holder of a tool carrier.
• a particularly precise calibration is possible, since the tool interface is typically have a well-defined and tightly tolerated position.
• tool interfaces often have standardized interfaces that allow easy and quick changeover.
• Underfloor wheel lathe is used to machine wheelsets of
• Rail vehicles it therefore typically comprises at least one tool, in particular at least one rotary tool.
• the object is finally achieved by a method for calibrating a
• Underfloor wheel lathe comprising the following steps: a) providing an underfloor wheel lathe with a measuring device, b) providing a device for calibrating, and c) calibrating the underfloor wheel lathe, in particular calibrating the measuring system.
• the calibration takes place without the use of a calibration wheel set.
• the use of a heavy calibration wheel set is dispensed with
• the waiver of a Kalibrierradsatz can be achieved, for example, that the calibration is performed by a device according to one of claims 1 to 5.
• the device described above can on a
• Kalibrierradsatz be waived, since the friction roller of the device can take over the function of the wheel discs of Kalibrierradsatzes.
• the calibration comprises the following sub-steps: c1) bringing a friction roller into contact with one another
• Measuring roller of the measuring device c2) driving the friction roller and / or the measuring roller so that the rollers roll against each other, c3) measuring the friction roller, in particular measuring the diameter of the friction roller, and c4) calibrating the measuring device taking into account the values measured in step c3) ,
• the following steps can be provided: c4a) calibration of the x-axis by contact between the friction roller (24) and a measuring roller (11, 12), and / or c4b) calibration of the z-axis by contact between the measuring bridge (18) and a measuring roller (11, 12).
• the device may comprise a material measure, called a measuring bridge, which serves to calibrate the Z axes of the integrated measuring systems. This can
• the device can be a driven measuring roller include, which can be attached to existing in the machine tool interfaces and by rolling the diameter measuring device allows calibration of these.
• the measuring bridge can be fixed in the machine, which is done in a few simple steps.
• the measuring bridge can be clamped to the sliding rail.
• Diameter measuring device are installed in the adjacent tool holder of the measuring device to be measured.
• the measuring system of the respective machine side can thus be positioned and calibrated in the Z-axis direction on the measuring bridge, which has hitherto been done on the inside of the Kalibrierradsatzes.
• the measuring wheel of the measuring device is calibrated at the diameter measuring device.
• the measuring wheel of the measuring device is positioned on the driven friction roller and pressed so that the friction roller drives the measuring wheel without slippage as soon as it starts to move. Then the defined rotation of the friction roller takes place, which at the same time drives the measuring wheel without slip.
• a comparison of the speeds with simultaneous calculation of the two involved diameters of friction wheel and measuring wheel thus enables the calibration of the
• the contact point of the measuring roller with the friction roller can be consulted as an x value for calibrating the measuring device.
• Fig. 1 a known from the prior art measuring a
• FIG. 2B shows a section through the measuring device from FIG. 2A, FIG.
• FIG 3 shows a measuring bridge of a device according to the invention for
• Fig. 4A an inventive device for calibrating a
• Fig. 4B the device of Fig. 4A in an enlarged, perspective
• Fig. 4C a section through the device of Fig. 4B.
• FIG. 1 shows a measuring device 1 known from the prior art, which is mounted on a rotary support 2 of a (only partially shown in FIG. 1).
• Underfloor wheel lathe 3 is arranged.
• the underfloor wheel lathe 3 serves to machine a wheelset 4 of a rail vehicle and has a friction roller drive 5 which serves to drive the wheel set 4 via its wheel disks 4 'and to rotate about its axis A.
• a tool carrier 6 is arranged, which can accommodate different tools.
• the underfloor wheel lathe 3 also comprises a crossbar 7, which is parallel to the axis A of the wheelset 4 and a spindle 8, which also extends parallel to the axis A of the wheelset. A rotation of the spindle 8 leads to a linear displacement of the rotary support 2 in the direction of the axis A of the wheelset 4 - ie parallel to the crossbar 7.
• FIG. 2A the construction of the measuring device 1 of Fig. 1 is shown. Also shown is the wheel disc 4 'of the wheelset 4. The parts already described in connection with Fig. 1 are in Fig. 2A - and in all other figures - with
• the measuring device 1 comprises a lower part 9 and a movable upper part 10 which can be displaced relative to the lower part 9 along the axis A of the wheel set 4.
• the lower part 9 can be moved in the x direction of the machine.
• the measuring device 1 also comprises a tread measuring roller 11 and a back measuring roller 12, wherein both measuring rollers 11, 12 are rotatably mounted on the movable upper part 10 of the measuring device 1.
• FIG. 2B shows a section through the measuring device from FIG. 2A. Also in FIG. 2B, the parts already described in connection with FIG. 1 or FIG. 2A are provided with corresponding reference numerals.
• the movable part 10 is linearly displaceable relative to the lower part 9, which is realized by a guide 13.
• the measuring device 1 has a housing 14 which, in the embodiment shown in FIG. 2A, comprises two housing parts 14A, 14B. Both the tread measuring roller 11 and the back measuring roller 12 are rotatably supported relative to the housing 14, wherein the tread measuring roller 11 is rotatably supported by rolling bearings 15A relative to the housing part 14A and wherein the back measuring roller 12 opposite
• FIG. 3 shows a measuring bridge of a device according to the invention for calibrating an underfloor wheel lathe on the rail of FIG
• the measuring bridge 18 has at both ends a bearing 19, with which the measuring bridge 18 can be moved along sliding rails 20. Shown are also two of the previously described measuring devices 1, which are each associated with a sliding rail 20. Also shown are a plurality of roller carriers 21, on which the friction roller drives 5 already described previously (FIG. 1) are mounted, which are displaceably mounted in the vertical direction for raising and lowering wheelsets (shown by double arrows in FIG. 3).
• Fig. 4A shows a device 22 according to the invention for calibrating a
• the device 22 comprises a motor 23 and a friction roller 24 ("measuring roller") which is rotatably supported about a rotation axis D.
• the motor 23 may be, for example, a servo-electric motor
• the device 22 can be mounted on a tool holder 6 'which is arranged on the tool carrier 6
• Tool interfaces must have very low tolerances, can be achieved by using the tool holder 6 'a particularly accurate calibration. As already described in connection with FIG. 1, the
• the (calibration) device 22 is mounted such that its friction roller 24 touches the measuring device 1 and in particular the tread measuring roller 11 of
• FIG. 4B the device 22 of Fig. 4A is shown in an enlarged, perspective view.
• FIG. 4C shows a section through the device 22 from FIG. 4B.
• the friction roller 24 has an approximately cylindrical outer surface which surrounds the tread measuring roller 11 of the measuring device 1 can drive due to friction.
• the device 22 can - instead of a tool - are mounted on the tool carrier 6, since during the calibration no tool (eg for machining the wheelset) is needed.
• the assembly is performed by an angle 25.
• the friction roller 24 can be connected by a clamping set 26 with the device 22 and separated from it.

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Physics & Mathematics (AREA)
• General Physics & Mathematics (AREA)
• Turning (AREA)

Applications Claiming Priority (2)

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• 2018
  • 2018-11-16 BR BR112020008691-6A patent/BR112020008691B1/pt active IP Right Grant
  • 2018-11-16 WO PCT/EP2018/081511 patent/WO2019096971A1/de active Search and Examination
  • 2018-11-16 JP JP2020526918A patent/JP7095090B2/ja active Active
  • 2018-11-16 CN CN201880074563.1A patent/CN111356547B/zh active Active
  • 2018-11-16 US US16/762,658 patent/US11453061B2/en active Active
  • 2018-11-16 EP EP18807038.7A patent/EP3710188A1/de active Pending
  • 2018-11-16 AU AU2018369693A patent/AU2018369693B2/en active Active
  • 2018-11-16 RU RU2020116694A patent/RU2742863C9/ru active

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