DE102004027112A1 - Method and device for testing gearboxes, in particular manually and electronically switched load gearboxes - Google Patents

Abstract

A method for testing transmissions, in particular manual and electronically shifting load transmissions, is proposed, which is integrated in the manufacturing or assembly process of the transmission (2).

Description

The The present invention relates to a method for testing Driven, especially by manually and electronically switching Load gears according to the preamble of claim 1. Furthermore, the invention relates to a device to check Driven, in particular for carrying out the method according to the invention.

devices for testing of gears are known from the prior art. Because of the engagement such devices can Results are obtained for normally driving tests are required. They usually include a drive for the one to be tested Transmission and an output in the form of a loading machine.

From the DE 195 37 639 the applicant is a device for testing transmissions known with a drive motor, a test gear, a transmission downstream of the test gear to adapt to the engine map of at least one loading machine in which two parallel loading machines are provided, which are different and separately controlled and in a transmission for power division or line summation are merged.

Another device for testing transmissions is from the DE 39 05 983 A1 known; it comprises a designed as a turntable Prüflingsträger on which a plurality of specimens are receivable, the stepwise with the angular distance of the specimens corresponding step angle is driven to increase the throughput of specimens.

Furthermore, from the DE 43 28 537 A1 a transmission tester is known, comprising a drive motor, which is connectable to the drive shaft of the transmission with a torsionally rigid coupling, a computer and a control unit, wherein the computer and the control unit for controlling the speed of the drive motor. The test stand comprises a further motor, which is connectable via a further torsionally rigid coupling with the output shaft of the transmission and can be used both as a drive and as a brake motor.

All Devices for testing of prior art transmissions form a separately constructed Unit outside the assembly or manufacturing process. This means the gears At the end of the production line they are driven to the test stands, where test personnel the exam performs. This procedure proves to be time-consuming and expensive, because, for example, after completion of production, the transmission to test unit need to be driven and also because more staff is needed becomes; moreover, more space will be available for the separate test unit needs what prove to be disadvantageous in the optimization of the production can.

Of the The present invention is based on the object, a method for testing of transmissions, in particular manually and electronically switching Load powered to specify what the above-mentioned disadvantages of the state the technology avoids. In particular, should by the inventive method the costs are lowered and the manufacturing process included accelerates the transmission test become. Furthermore, a device for testing of Driven, which in particular for carrying out the method according to the invention is suitable to be created.

The Method and device for testing transmissions according to the invention should be both for electronically as well as for manually shifting load transmissions (manual transmissions, automated manual transmissions, Automatic transmission, etc.) be suitable.

These Task is for a method by the features of claim 1 solved. A device for testing of transmissions is the subject of claim 9. Further embodiments and advantages will be apparent from the corresponding subclaims.

Therefore will be a method of testing proposed by transmissions, which in the manufacturing or assembly process the transmission is integrated. This eliminates advantageously the need to provide a separate unit for testing transmissions. Advantageously, the gearboxes are tested on the assembly line.

The inventive device for testing of gearboxes can be integrated into the production line and is on the to be tested Transmission, which are on the assembly line or the assembly trolley can, lowerable.

in the Frame of a preferred embodiment it includes a lifting motor for height adjustment, by means of which the device is lowered onto the gear to be tested, and a longitudinally adjustable portal-shaped Support element, on both sides of each of the drive or the output motor are arranged, which over one parallel to the portal-shaped support element and by a given amount in Direction of the transmission staggered drive or driven pinion connectable with the drive or output side of the gear to be tested are.

Further includes the device for testing Driven a pneumatics for longitudinal adjustment of the portal-shaped support element as well as an electrical distributor for the motors, which in the carrier element are arranged. The drive and the output motor are preferably designed as a main spindle motors; the output motor is such that he designed in dependence decelerates or drives down the output of the shift this way to reach the synchronous speed dynamically fast, whereby the testing process A transmission can take only about three minutes. The device also has a device for filling the transmission with test oil as well for sucking off the test oil Termination of the exam on. Furthermore, a hydraulic system is provided for the hydraulic transmission clamping.

According to the invention The device can be used for testing of transmissions one controllable by the test program Have automatic switch, which for checking manually switchable Driven is used. In this case, the automatic switch preferably two actuators to choose and switching with appropriate gearboxes and is with the switching device the transmission connectable; the automatic switch thus takes over during the test procedure the role of the shift lever. For this purpose are from the transmission control the circuit diagram and the corresponding position values are read in and saved.

• ➢ Fahren des Getriebes unterhalb der Vorrichtung zum Prüfen von Getrieben mit anschließender Positionierung, wobei dies in vorteilhafter Weise mittels des Montagewagens erfolgt;
• ➢ Absenken der Vorrichtung zum Prüfen von Getrieben auf das Getriebe, Andocken der Antriebs- und Abtriebspinole an der Antriebs- bzw. Abtriebsseite des Getriebes mittels der Längsverstellung und Klem men des Getriebes hydraulisch über geeignete Einrichtungen, beispielsweise Spannpratzen;
• ➢ Befüllen des Getriebes mit Prüföl;
• ➢ Anschließen des Zentralkabelbaums für die Getriebesteuerung sowie der Getriebekabelbäume;
• ➢ Testen des Getriebes mit einem Prüfprogramm, wobei das Getriebe automatisch über das Fahrzeug-Bussystem oder für den Fall eines manuell schaltbaren Getriebes über den Schaltautomaten geschaltet wird. Hierbei können vor dem Prüflauf Barcodes von einem Begleitschein eingescannt werden, um die geeigneten Prüfparameter zu ermitteln.
• ➢ Absaugen des Prüföls und Entfernen der Kabelbäume;
• ➢ Lösen der hydraulischen Getriebeaufspannung; und
• ➢ Längsverstellung in Hubposition bringen und Getriebe entfernen.

Within the scope of a particularly advantageous variant, the method for testing transmissions comprises the following steps:

• ➢ Driving the gear below the device for testing gearboxes with subsequent positioning, this being done in an advantageous manner by means of the assembly carriage;
• ➢ Lowering the device for testing transmissions on the transmission, docking of the drive and driven pinion on the input and output side of the transmission by means of the longitudinal adjustment and Klem men of the transmission hydraulically via suitable means, such as clamping claws;
• ➢ filling the gear unit with test oil;
• ➢ Connecting the central wiring harness for the transmission control and the gear harnesses;
• ➢ Testing the gearbox with a test program, whereby the gearbox is automatically switched via the vehicle bus system or, in the case of a manually switchable gearbox, via the automatic gearshift. In this case, bar codes can be scanned by a consignment note before the test run to determine the appropriate test parameters.
• ➢ Extract the test oil and remove the wiring harnesses;
• ➢ release the hydraulic gearbox clamping; and
• ➢ Bring the longitudinal adjustment into the stroke position and remove the gearbox.

The The invention will be explained in more detail below by way of example with reference to the attached figures. Put it represents:

1 a schematic side view of a preferred embodiment of a device according to the invention for testing transmissions; and

2 a schematic plan view of the device for testing transmissions according to 1 ,

According to 1 includes the device according to the invention 1 for testing gearboxes 2 a lifting motor 3 , the height adjustment of the device 1 along an axis 5 serves, and one perpendicular to the axis 5 arrange and with the axle 5 centrally connected, longitudinally adjustable portal-shaped support element 4 , In one side of the support element 4 is one with the input shaft of the transmission 2 connectable drive motor 6 and in the other side with the output shaft of the transmission 2 connectable output motor 7 arranged, the electric distributor 8th for the engines 6 . 7 at one end of the carrier element 4 is arranged. At the other end is advantageously the pneumatic device 9 for longitudinal adjustment of the portal-shaped carrier element 4 intended. The assembly truck on which the gearbox 2 is arranged in is 1 With 14 designated.

How out 1 can be seen, are the drive motor 6 and the output motor 7 in each case via a parallel to the portal-shaped carrier element 4 and offset by a predetermined amount in the direction of the transmission arranged drive or driven pinion 10 respectively. 11 with the drive or output side of the gear to be tested 2 connectable. Not shown in 1 is the proposed device, preferably comprising quick disconnect couplings, for filling the transmission with test oil and for sucking the test oil after completion of the test. Furthermore, a tensioning hydraulic system is provided for hydraulic transmission clamping, which in 2 with the reference number 12 is provided.

For testing manually shiftable transmissions, the device according to the invention has a switching machine 13 on, which takes over the role of the shift lever during the testing process. The automatic switch 13 preferably has two actuators for selecting and shifting with corresponding gears and is connected to the switching device of the transmission 2 connectable. Electronically switchable transmissions are switched via the vehicle bus system.

Subject of the 2 is a schematic plan view of a device according to the invention 1 for testing gearboxes. In addition to the in 1 For the invention relevant components shown is the clamping hydraulics 12 , the oil plant 16 for filling the gear unit with test oil, as well as a control panel 15 , It may also be provided on site a keypad with the 17 is designated. With 18 is the control of the device with the corresponding power units for driving and driven called.

With the apparatus according to the invention for testing gearboxes integrated into the production line, it is possible to check the gearboxes at the end of the manufacturing or assembly process, as described in the introduction, wherein the test items are tested on the assembly line or the assembly trolley. This will be in 2 illustrated by the arrows, which illustrate the direction of movement of the transmission in the context of manufacturing.

in the Frame of a particularly advantageous variant of the method for Check of gears is provided, the test procedures by means of a visualization system to visualize; In addition, the device for testing Driven over be controlled by a PC, the test programs using appropriate software can be created and managed.

By the concept of the invention is Achieved a quick and user-friendly test of the candidates; it is e.g. possible, an exam within three minutes.

1

contraption for testing of transmissions

2

transmission

3

Lifting motor

4

portal-shaped carrier element

5

axis

6

drive motor

7

motor output

8th

electrical distribution

9

Pneumatic equipment for longitudinal adjustment of support beam

10

Antriebspinole

11

Abtriebspinole

12

hydraulic clamping

13

automatic switch

14

assembly trolley

15

control panel

16

oil plant

17

keypad

18

control

Claims (19)

Method for testing transmissions, in particular manual and electronically shifting power transmissions, characterized in that it is incorporated in the manufacturing or assembly process of the transmissions ( 2 ) is integrated. A method of testing transmissions according to claim 1, characterized in that the transmissions ( 2 ) at the end of the manufacturing or assembly process by means of a device for testing transmissions ( 1 ) on the assembly line or the assembly carriage ( 14 ) being checked. A method of testing transmissions according to claim 1 or 2, characterized in that the device for testing transmissions ( 1 ) on the gearbox to be tested ( 2 ) is lowered. A method of testing transmissions according to claim 1, 2 or 3, characterized in that it comprises the following steps: ➢ driving the transmission ( 2 ) below the device ( 1 ) for testing transmissions with subsequent positioning; ➢ lowering the device ( 1 ) for checking transmissions on the transmission ( 2 ); ➢ Docking one with a drive motor ( 6 ) or an output motor ( 7 ) connected drive and driven pinole ( 10 . 11 ) on the drive or output side of the transmission ( 2 ) by means of a longitudinal adjustment and clamping or clamping of the transmission ( 2 ) hydraulically via suitable means; ➢ Filling the gearbox ( 2 ) with test oil; ➢ Connecting the central wiring harness for the transmission control and the gear harnesses; ➢ Testing the gearbox ( 2 ) with a test program, wherein the transmission ( 2 ) automatically via the vehicle bus system or in the case of a manually switchable transmission via a switching machine ( 13 ), in which the circuit diagram of the transmission ( 2 ) and the corresponding position values are stored; ➢ Extract the test oil and remove the wiring harnesses; ➢ release the hydraulic gearbox clamping; and ➢ bring the longitudinal adjustment into the stroke position, device ( 1 ) to check gearboxes and gearboxes ( 2 ) remove. A method of testing gearboxes according to claim 4, characterized in that before the test run barcodes are scanned by a consignment note in order to determine the suitable test parameters for the gearbox to be tested ( 2 ) to investigate. Method for testing transmissions according to one of the preceding claims, characterized ge indicates that the test procedures are visualized by means of a visualization system. Method for testing transmissions according to one of the preceding claims, characterized in that the device ( 1 ) is controlled via a PC for testing transmissions, the test programs being created and managed by suitable software. Method for testing transmissions according to one of the preceding claims 4 to 7, characterized in that as engines ( 6 . 7 ) Main spindle motors are used, the output of the gearbox ( 2 ) by the output motor ( 7 ) is decelerated or driven depending on the type of shift to achieve a dynamic reaching of the synchronous speed and to accelerate the test. Device for testing transmissions, in particular manual and electronically shifting power transmissions, with a drive motor ( 6 ) for the drive side of the gear to be tested ( 2 ) and an output motor ( 7 ) for the output side of the gear to be tested ( 2 ), characterized in that it is integrable in the production line. Device for checking transmissions according to claim 9, characterized in that it relates to the transmission to be tested ( 2 ) is lowered. Device for testing transmissions according to claim 9 or 10, characterized in that it comprises a lifting motor ( 3 ), the height adjustment of the device ( 1 ) along an axis ( 5 ) and one perpendicular to the axis ( 5 ) and with the axis ( 5 ) centrally connected longitudinally adjustable portal-shaped carrier element ( 4 ). Device for checking transmissions according to claim 11, characterized in that in one side of the portal-shaped carrier element ( 4 ) with the input shaft of the transmission ( 2 ) connectable drive motor ( 6 ) and in the other side with the output shaft of the transmission ( 2 ) connectable output motor ( 7 ) is arranged, wherein at one end of the portal-shaped support element ( 4 ) an electrical distributor ( 8th ) for the engines ( 6 . 7 ) is arranged and at the other end of the portal-shaped Trägerele Mentes ( 4 ) a pneumatic device ( 9 ) for longitudinal adjustment of the portal-shaped carrier element ( 4 ) is provided. Device for testing transmissions according to claim 11 or 12, characterized in that the drive motor ( 6 ) and the output motor ( 7 ) in each case via a parallel to the portal-shaped carrier element ( 4 ) and by a predetermined amount in the direction of the gear to be tested ( 2 ) arranged offset drive or output pinion ( 10 . 11 ) with the drive or output side of the gear to be tested ( 2 ) are connectable. Device for checking transmissions according to one of Claims 9 to 13, characterized in that it has a clamping hydraulic system ( 12 ) to the hydraulic Getriebeaufspannung comprises. Device for testing gearboxes according to one of Claims 9 to 14, characterized in that, for testing manually shiftable gearboxes, they provide a switchgear controllable by the test program ( 13 ), which takes over the role of the shift lever during the testing process. Device for checking transmissions according to claim 15, characterized in that the automatic switch ( 13 ) has two actuators for selecting and switching with corresponding gears and with the switching device of the transmission ( 2 ) is connectable. Device for testing transmissions according to one of Claims 9 to 16, characterized in that the drive and the output motor ( 6 . 7 ) are designed as main spindle motors. Device for checking transmissions according to claim 17, characterized in that the output motor ( 7 ) is designed such that, depending on the type of shift, the output of the transmission ( 2 ) decelerates or drives to achieve a dynamic reaching the synchronous speed. Use of a device for testing Driven according to one of the claims 9 to 18 to carry out the method of testing of transmissions according to one of claims 1 to 8.