WO2005098389A1 - Procede et dispositif pour compenser negativement le balourd d'un rotor et procede pour produire un rotor a compensation negative de balourd - Google Patents

Procede et dispositif pour compenser negativement le balourd d'un rotor et procede pour produire un rotor a compensation negative de balourd Download PDF

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Publication number
WO2005098389A1
WO2005098389A1 PCT/EP2005/050868 EP2005050868W WO2005098389A1 WO 2005098389 A1 WO2005098389 A1 WO 2005098389A1 EP 2005050868 W EP2005050868 W EP 2005050868W WO 2005098389 A1 WO2005098389 A1 WO 2005098389A1
Authority
WO
WIPO (PCT)
Prior art keywords
impeller
laser
gripping
positioning
controlled
Prior art date
Application number
PCT/EP2005/050868
Other languages
German (de)
English (en)
Inventor
Lorenz Gernert
Peter Kunze
Manfred Richter
Hans Rohm
Klaus SCHWÖRER
Peter Tiemeyer
Original Assignee
Siemens Aktiengesellschaft
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 Siemens Aktiengesellschaft filed Critical Siemens Aktiengesellschaft
Priority to EP05716844A priority Critical patent/EP1733200A1/fr
Publication of WO2005098389A1 publication Critical patent/WO2005098389A1/fr

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M1/00—Testing static or dynamic balance of machines or structures
    • G01M1/30—Compensating imbalance
    • G01M1/34—Compensating imbalance by removing material from the body to be tested, e.g. from the tread of tyres
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
    • F04D29/662—Balancing of rotors

Definitions

  • the invention relates to a device and a method for the negative balancing of an impeller and a method for producing a negatively balanced impeller.
  • Such impellers are used in particular as radial fan wheels for heating or air conditioning fans in motor vehicles.
  • Such wheels should be characterized by a low noise level under all operating conditions.
  • the prerequisite for such low noise is also the compensation of the smallest residual imbalance of the impeller.
  • Such impellers are often operated at very high speeds.
  • the imbalances lead to wobbling movements of the impeller in relation to its axis of rotation and thus lead to corresponding noise emissions.
  • the balancing can be done by removing material from the blades of the impeller or is often done by attaching clamps with the appropriate mass.
  • the setting of brackets is relatively time-consuming in the production of the fan wheel and thus increases the cycle times in production.
  • the individual impeller blades can also be difficult to access for setting the clamps.
  • negative balancing In which material is removed from the impeller at certain positions and the imbalance is thus eliminated.
  • negative balancing it is known from DE 197 48 309 C2 by means of a punch out material designed as a pistol using a cutting punch.
  • a punching tool allows a defined punching out of material from the impellers of an impeller, but the tool must be adapted to the geometry of the wheel and must therefore be converted, for example, for left-hand and right-hand impellers.
  • the object of the invention is to provide a device for the negative balancing of an impeller and a method for the negative balancing of an impeller which enable precise balancing of the impeller regardless of the geometry of the impeller. Furthermore, the object of the invention is to create a method for producing a negatively balanced impeller, which enables precise balancing of the impeller.
  • the invention is characterized by a device for negative balancing of an impeller, a corresponding method for operating the device for negative balancing of the impeller and a corresponding method for producing a negatively balanced impeller.
  • the device for negative balancing has a gripping device which has a gripping drive and a gripper which is designed for gripping an impeller. It also has a laser device which has a laser and a positioning unit, which is used to adjust the position of the laser and thus that of the laser. producible laser beam is provided.
  • a control unit is provided which is designed to control the gripping device in the sense of gripping the laurel wheel and positioning the impeller relative to the laser device, for controlling the positioning unit and the laser in such a way that the laser provides a predeterminable contour from the Impeller is cut and to control the G-rip device in the sense of further positioning the impeller and releasing the impeller.
  • the invention thus has the advantage that it can be used for different geometries of the respective impeller, in particular with regard to the alignment of the impeller blades of the laurel wheel. It can thus be used, for example, to manufacture both left-hand drive and right-hand drive wheels.
  • control unit is designed to read in unbalance data for positioning the impeller relative to the laser device.
  • the imbalance of the impeller can be determined by another device, which may be in another place, and manual input of the imbalance data is not necessary at the same time.
  • a light sensor is provided, by means of which a reference angle position of the gripped impeller can be determined in cooperation with the gripping device. In this way, precise positioning of the laurel wheel relative to the laser device is made possible in a simple manner.
  • a suction device which is formed ⁇ t for sucking material which, by means of the laser of. Impeller was cut. In this way it can easily be ensured that no waste parts “caused by the negative balancing” remain as foreign bodies in the impeller or in a device assigned to the impeller and can lead to faults there.
  • the laser is a carbon dioxide laser, it is particularly well suited for negative balancing a plastic wheel -S.
  • the gripping device for positioning the impeller is controlled relative to the laser device, the positioning unit and the laser are controlled in such a way that the laser cuts a "definable contour from the fan wheel , the gripping device for positioning the impeller in another relative position to the laser device is controlled and the positioning unit and the laser are controlled such that the laser cuts a predeterminable further contour from the impeller.
  • the balancing can take place at two axially spaced positions with respect to the axis of the impeller, ie in two unbalance levels. In this way, even at very high speeds of the impeller, a very quiet running can be guaranteed and a so-called dynamic and static imbalance can be compensated.
  • balancing in the region of the two axial ends of the impeller that is to say in the unbalance planes running there, is particularly advantageous.
  • FIG. 1 shows a device for negative balancing an impeller
  • FIG. 2 shows a further view of the device according to FIG. 2,
  • Figure 3 shows a negatively balanced impeller
  • Figure 4 is a Abla f diagram of a program that is processed in a control unit of the device for negative balancing of the impeller.
  • An impeller 6 can for example be formed as a fan wheel for a blvessevorraum Ge, for example, is provided in egg nem motor vehicle for supplying Frischluf ⁇ t or for supplying heated air or supplying cooled air.
  • the impeller is placed and pressed onto a drive shaft of a drive of the blower device during the manufacture of the blower device.
  • a balance sorter is then used to determine which imbalances the impeller 6 has.
  • the balance sorter preferably detects in the area which angle, based on the axis of rotation of the impeller 6, contains imbalances and should, for example, be printed out in a mass which is to be removed in this area in order to eliminate the imbalance.
  • first angles Alphal and second angles Alpha2 and corresponding first and second angles are provided at two positions spaced axially with respect to the axis of the impeller Unbalances UW1, UW2 recorded.
  • the first and second angles Alphal, Alpha2 and first and second imbalances UW1, UW2 thus detected are preferably temporarily stored on a workpiece carrier assigned to the blower device. If the first unbalance UW1 and / or the second unbalance UW2 exceeds a predetermined threshold value, the workpiece carrier with the blower device is guided to an unbalance compensation station.
  • the unbalance compensation station has a lifting shape with a lifting device which is designed to convey the blower device with the workpiece carrier to a chamber in which there is a device for negative balancing of the impeller.
  • the workpiece carrier can also remain outside the chamber.
  • the device for negative balancing of the impeller 6 has a gripping device 1 with a gripping drive 2 and a gripper 4.
  • the gripper 4 is designed for gripping the impeller, preferably on a pin formed centrally in the impeller 6, the impeller hub.
  • the gripping device is also made formed for positioning the impeller relative to the laser device.
  • the gripping drive 2 preferably comprises an electric motor, which acts on the gripper by means of a coupling device. In this way, both the gripper itself can be operated and the gripper can be rotated about its axis.
  • the device for negative balancing has a laser device 8 with a laser 9 and a positioning unit 10.
  • the laser device is provided for adjusting the position of the laser 9 and thus the laser beam that can be generated by the laser 9.
  • the laser 9 is preferably a carbon dioxide laser.
  • the laser is preferably a YAG laser.
  • the positioning unit 10 is preferably designed as a stepper motor and the beam guidance of the laser can be refocussed onto each paddle wheel by means of this.
  • the laser beam generated by the laser 9 is designated by the reference number 12.
  • a control unit 14 is provided, which is designed to actuate the gripping device 1 in the sense of gripping the impeller 6 and positioning the impeller 6 relative to the laser device 8.
  • the control unit 14 is also designed to actuate the positioning unit 10 and the laser 9 such that a predeterminable contour 16 is cut out of the impeller 6 by the laser.
  • a reading unit 18 is provided for reading in unbalance data, which are the first and second angles Alphal, Alpha2 and the first and second unbalance UW1, UW2.
  • the reading unit 18 reads in this data and then makes it available to the control unit 14.
  • a light sensor 20 is provided, by means of which a reference angle Alpha_Ref of the gripped impeller 6 can be determined in cooperation with the gripping device.
  • the gripping drive 2 rotates the impeller 6 about its axis until the light sensor 20 delivers a characteristic signal which is generated when the impeller 6 with a reference mark 22 is in alignment with a light beam generated by the light beam of the light sensor 20.
  • the first and second angles Alphal, Alpha2 are related to this reference angle Alpha_Ref.
  • a suction device 24 which sucks off material separated by means of the laser and thus ensures that this material, which is also referred to as waste material, does not remain as a foreign body in the region of the fan wheel and leads to malfunctions during later operation of the impeller.
  • FIG. 2 shows a further view of the device for negative balancing
  • FIG. 3 shows an impeller which was negatively balanced in the device for negative balancing and thus was at least partially produced in the same.
  • the program is started in a step S1, in which variables are initialized if necessary.
  • a step S2 the first and second angles Alphal, Alpha2 and the first and second imbalances UW1, UW2 are read.
  • the reference angle Alpha_Ref is then determined in a step S3.
  • a control signal CTRL_G for the gripping drive 2 is then determined as a function of the first angle Alphal.
  • the fan wheel is then positioned in a predetermined first axial position, which is, for example, in its area of its one axial end and rotated about its axis in the first angle Alphal. This is done relative to the laser device 8 in such a way that the laser beam 12 that can be generated in the laser 9 can then strike a predetermined area of the fan wheel in the area around the first angle Alphal and in the area of the predetermined first axial position.
  • the Grei drive 2 is controlled with the control signal CTRL_G.
  • a control signal CTRL_L is then generated in a step S7 both for the laser 9 and for its positioning unit 10; these can also be two separate control signals.
  • the control signal CTRL_L for the laser 9 and the positioning unit 10 is generated depending on the first imbalance UWl.
  • the laser and the positioning unit are then activated in accordance with the control signal CTRL_L.
  • the control signal CTRL_L for the laser 9 and the positioning unit 10 can simply be determined in such a way that the required mass is removed from the corresponding impeller blades.
  • the contour 16 can depend on the respective unbalance, in this case the first unbalance UW1, but also on other parameters which, for example, the current Describe the behavior of the air flowing through the impeller 6 during the operation of the impeller 6, in particular turbulence of the air flowing past the contour 16 during the operation of the impeller 6.
  • step S9 in which the control signal CTRL_G for the gripping drive 2 is determined again, depending on the second angle Alpha2.
  • the gripping drive 2 is then controlled in accordance with the control signal CTRL_G for the gripping drive 2.
  • the impeller is preferably also moved in the axial direction in such a way that the laser beam 12 can act on a region of the impeller which is located at its other axial end.
  • control signal CTRL_L for the laser 9 and the positioning unit 10 is determined as a function of the second imbalance UW2 in accordance with step S7 and the laser 9 and the positioning unit 10 are controlled accordingly.
  • the control signal CTRL_G for the gripping drive is then determined and controlled in such a way that the impeller 6 is brought into a predeterminable end position and the gripper releases the impeller again. From this end position, the impeller can then again be fed to the balancing sorter, if necessary, and if it is determined that the first and / or second unbalance UW1, UW2 falls below the predetermined threshold value, it may be directed to another station at which the drive of the Blower device is still checked and then the manufacturing ends is. The program is then ended in a step S15.
  • the device for negative balancing of the impeller is thus characterized in that the unbalance compensation can take place independently of the respective impeller, in particular in the manner in which the impeller blades are designed. Furthermore, there is no set-up effort if impellers 6 with different geometries are to be machined in succession in the device for negative balancing. It has also been shown that the unbalance compensation by means of the device for negative balancing requires on average only a third of the time that is required for positive balancing or manual negative balancing using a punching tool.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Testing Of Balance (AREA)

Abstract

L'invention concerne un dispositif pour compenser négativement le balourd d'un rotor (6), comprenant un dispositif de préhension (1) qui présente un dispositif de commande de préhension (2) et un élément de préhension (4) conçu pour saisir le rotor (6). Le dispositif selon l'invention comprend en outre un dispositif laser (8) qui présente un laser (9) et une unité de positionnement (10) servant à régler la position du laser (9) et par conséquent celle du rayon laser (12) produit par le laser (9). Il comprend également une unité de commande (14) conçue pour commander le dispositif de préhension (1) de sorte qu'il saisisse le rotor (6) et positionne ce dernier par rapport au dispositif laser (8). Cette unité de commande est conçue en outre pour commander l'unité de positionnement (10) et le laser (9) de sorte que ce dernier (9) découpe un contour prédéfini (16) dans le rotor (6). Elle est également conçue pour commander le dispositif de préhension (1) de sorte qu'il positionne le rotor (6) et libère ce dernier.
PCT/EP2005/050868 2004-04-07 2005-03-01 Procede et dispositif pour compenser negativement le balourd d'un rotor et procede pour produire un rotor a compensation negative de balourd WO2005098389A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP05716844A EP1733200A1 (fr) 2004-04-07 2005-03-01 Procede et dispositif pour compenser negativement le balourd d'un rotor et procede pour produire un rotor a compensation negative de balourd

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004017269 2004-04-07
DE102004017269.2 2004-04-07

Publications (1)

Publication Number Publication Date
WO2005098389A1 true WO2005098389A1 (fr) 2005-10-20

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ID=34961106

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2005/050868 WO2005098389A1 (fr) 2004-04-07 2005-03-01 Procede et dispositif pour compenser negativement le balourd d'un rotor et procede pour produire un rotor a compensation negative de balourd

Country Status (2)

Country Link
EP (1) EP1733200A1 (fr)
WO (1) WO2005098389A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4037076A (en) * 1975-12-18 1977-07-19 Teledyne Industries, Inc. Apparatus for balancing rotating bodies
DE2705217A1 (de) * 1976-03-01 1977-09-15 Matsushita Electric Ind Co Ltd Rotorauswuchtvorrichtung
DE8904338U1 (de) * 1989-04-07 1990-08-09 Behr GmbH & Co, 7000 Stuttgart Radiallüfter
DE4441950A1 (de) * 1994-11-25 1996-05-30 Abb Management Ag Verfahren und Vorrichtung zum Messen und Abtragen grösserer Unwuchten rationssymmetrischer Hohlkörper in einer Balanciermaschine
EP1111362A2 (fr) * 1999-12-21 2001-06-27 Hofmann Maschinen- und Anlagenbau GmbH Procédé et dispositif de montage d'un poids de compensation de balourd par un robot

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4037076A (en) * 1975-12-18 1977-07-19 Teledyne Industries, Inc. Apparatus for balancing rotating bodies
DE2705217A1 (de) * 1976-03-01 1977-09-15 Matsushita Electric Ind Co Ltd Rotorauswuchtvorrichtung
DE8904338U1 (de) * 1989-04-07 1990-08-09 Behr GmbH & Co, 7000 Stuttgart Radiallüfter
DE4441950A1 (de) * 1994-11-25 1996-05-30 Abb Management Ag Verfahren und Vorrichtung zum Messen und Abtragen grösserer Unwuchten rationssymmetrischer Hohlkörper in einer Balanciermaschine
EP1111362A2 (fr) * 1999-12-21 2001-06-27 Hofmann Maschinen- und Anlagenbau GmbH Procédé et dispositif de montage d'un poids de compensation de balourd par un robot

Also Published As

Publication number Publication date
EP1733200A1 (fr) 2006-12-20

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