EP3844421A1 - Outil d'alignement angulaire de cannelures d'un arbre cannele avec des cannelures de forme complementaire d'un moyeu d'accouplement - Google Patents
Outil d'alignement angulaire de cannelures d'un arbre cannele avec des cannelures de forme complementaire d'un moyeu d'accouplementInfo
- Publication number
- EP3844421A1 EP3844421A1 EP19753158.5A EP19753158A EP3844421A1 EP 3844421 A1 EP3844421 A1 EP 3844421A1 EP 19753158 A EP19753158 A EP 19753158A EP 3844421 A1 EP3844421 A1 EP 3844421A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- tool
- splines
- gearbox
- splined shaft
- handle
- 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.)
- Withdrawn
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/023—Mounting or installation of gears or shafts in the gearboxes, e.g. methods or means for assembly
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING, OR HOLDING
- B25B13/00—Spanners; Wrenches
- B25B13/48—Spanners; Wrenches for special purposes
- B25B13/50—Spanners; Wrenches for special purposes for operating on work of special profile, e.g. pipes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
- B60Y2304/00—Optimising design; Manufacturing; Testing
- B60Y2304/07—Facilitating assembling or mounting
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H2057/0062—Tools specially adapted for assembly of transmissions
Definitions
- the present invention relates mainly to a tool for angular alignment of splines of a splined shaft with splines of complementary shape to a coupling hub.
- the present invention relates generally to the docking procedure of a heat engine and a gearbox for a vehicle, such as a motor vehicle.
- the splines of the input shaft of the gearbox must engage with the splines of the central hub a friction clutch, in particular carried by the flywheel of the heat engine.
- an operator manipulates the gearbox supported by a workshop crane by means of slings in an attempt to engage the splines of the input shaft of the gearbox in the splines of the friction clutch hub associated with the heat engine resting on a table at the berth.
- This method risks damaging the splined central hub of the friction clutch which can generate premature wear of the splines and / or poor sliding of the input shaft of the gearbox in operation. In addition, damage to this hub can cause the driver of the vehicle to shift into gear.
- the operator manually rotates the input shaft of the gearbox carried by a workshop crane by means of slings in an attempt to engage the splines of the shaft of entry in the grooves of the grooved central hub of the friction clutch of the heat engine resting on a table of the berth.
- This method has the disadvantage of polluting and removing the grease deposited in the mechanical factory on the splines of the input shaft, hence a risk of corrosion which can generate premature wear of the splines and / or poor sliding. of the input shaft in vehicle operation.
- this method can cause the input shaft in the friction clutch hub to jam and / or pollute the friction linings by centrifugation, resulting in slippage and premature wear of the friction linings. the clutch in vehicle operation.
- an operator uses a tool for rotating the differential of the mechanical gearbox which is slinged, the tool being different depending on the terminal factories.
- this method comprises the steps of:
- document FR3029166 describes a device for relative indexing of the splines of an input shaft of a gearbox and of a central hub of an engine clutch for a motor vehicle.
- this device is complex to produce and to use, insofar as it comprises several parts including a pivot axis to be inserted in a fixing hole for levering and a light for adjusting the center distance.
- this device is based on the application of a torque on a starter ring and therefore cannot be applied to heat engines without such a ring.
- the present invention aims to effectively remedy the drawbacks of known methods and tools by providing a tool for angular alignment of splines of a splined shaft having splines of complementary shape to a coupling hub, characterized in that that the tool includes:
- An end portion having a shape adapted to the splines of the splined shaft capable of ensuring a transmission of a torque to the splined shaft to align its splines with those of the coupling hub and configured to allow a radial extraction of the tool after alignment of the splines of the splined shaft,
- - a handle intended to be manipulated by an operator to carry out a radial extraction of the tool.
- the invention thus allows to act directly on the splined shaft without degradation of the splines of the coupling member or the splined shaft, without introduction of pollution on the splined interface between the splined shaft and the coupling member, and without removing grease from the splines.
- the invention being ready to use for operators in an assembly plant, it makes it possible to obtain a gain in assembly time in the factory at the engine-gearbox docking station.
- the invention also has an economic character, insofar as it is easy to produce and at low cost.
- the end portion comprises two fixed arms opposite one another provided with pins intended to be inserted between the grooves of the splined shaft.
- a space between the free ends of the two arms in the unstressed state is less than the diameter of the splined shaft to secure a positioning of the tool around the splined shaft.
- the arms are configured to allow, by elastic deformation, an extraction of the tool relative to the splined shaft when a radial force is applied to the tool.
- a section of an arm decreases when one moves towards its free end.
- the tool is made of a plastic-based material having a thickness of less than 5mm and having a value of approximately 3mm.
- the end portion has a single hook-shaped arm.
- the extraction handle has a loop shape allowing passage of at least part of an operator's hand.
- the extraction handle has at least one transverse portion relative to the handle having in particular a hook shape.
- the invention also relates to a method of assembling a gearbox with a heat engine, characterized in that it comprises:
- Figures 1a and 1b are schematic representations of variants of a first embodiment of a tool according to the invention of angular alignment of splines an input shaft of a gearbox with grooves of complementary shape of a coupling hub;
- Figures 2a to 2d are side views of the different stages of assembly of a gearbox and a heat engine using the tool of Figures 1a and 1b;
- Figure 3a is a schematic representation of a second embodiment of a tool according to the present invention.
- Figure 3b is a schematic representation illustrating the different movements to be performed to extract the tool of Figure 3a.
- Figure 2a shows a tool 10 for angular alignment of splines 1 1 of an input shaft 12 of a gearbox 13 with splines of complementary shape to a coupling hub 15 between a motor thermal 16 and the gearbox 13.
- the coupling hub 15 could for example be a clutch friction hub or any other coupling hub suitable for the application.
- this tool 10 has an end portion 18 having a shape adapted to the grooves 1 1 of the input shaft 12 of the gearbox 13 adapted to ensure a transmission of a torque to the input shaft 12 to align its splines 1 1 with those of the coupling hub 15 and configured to allow a radial extraction of the tool 10 after alignment of the splines 1 1 input shaft 12.
- the end portion 18 has two arms 20 fixed opposite one another from a handle 21. These arms 20 are provided with pins 22 intended to be inserted between the grooves 1 1 of the input shaft 12 of the gearbox 13.
- the pins 22 may possibly include chamfers to facilitate the mounting of the tool 10 on the input shaft 12.
- a space 24 between the free ends of the two arms 20 in the unstressed state is less than the diameter of the splined input shaft 12 of the gearbox 13 to secure a positioning of the tool 10 around the shaft 12.
- the arms 20 are configured to allow, by elastic deformation, an extraction of the tool 10 relative to the shaft input 12 of the gearbox 13 when a radial force is applied to the tool 10. Indeed, such a force has the effect of spreading, by elastic deformation, the two arms 20 from one of the other so as to allow the passage of the input shaft 12 between the two arms 20 to release the tool 10.
- the extraction force must be acceptable to the operator who will repeat the operation at least twice per minute.
- a section of an arm 20 decreases when one moves towards its free end in order to facilitate the withdrawal of the tool 10.
- the portion 25 of the tool 10 extending between the two arms 20 is shaped to facilitate the centering of the tool 10 on the input shaft 12 of the gearbox 13 and provide support the torque transmission by being provided with additional support and / or pins 22 between the grooves 1 1.
- the handle 21 of the tool 10 has a length, measured radially in Figure 2a relative to the axis X of the input shaft 12 of the gearbox 13, which is greater than that of a gearbox housing 13 when the end portion 18 is engaged with the input shaft 12 of the gearbox 13.
- the length of the handle 21 is sufficient to protrude from the housing when the tool 10 is in place on the input shaft 12 of the gearbox 13 so that it can be manipulated by the operator.
- the handle 21 has a width allowing sufficient torque to be transmitted to the input shaft 12 of the gearbox 13.
- the handle 21 is not very thick and has a surface without angularities so as not to interfere with the surrounding parts during the gearbox docking phase 13.
- the handle 21 may have a recess 26 in an intermediate area to adapt to surrounding shapes, such as the housing of the gearbox 13.
- the handle 21 does not have 26 and is flexible enough to adapt to the surrounding shapes.
- a handle 28 is intended to be manipulated by an operator to perform a radial extraction of the tool 10.
- the extraction handle 28 may have a form of loop allowing the passage of at least part of an operator's hand.
- the handle 28 may also have at least one transverse portion 29 relative to the handle 21 having in particular a hook shape.
- the handle 28 comprises two transverse portions 29 in the form of a hook.
- the material of the tool 10 is chosen so as not to damage the grooves 1 1 of the input shaft 12 of the gearbox 13, not to release particles which can damage the system in use, and not to damage the other parts in contact during extraction.
- the tool 10 is made of a plastic-based material having a thickness of less than 5mm and worth approximately 3mm plus or minus 10%. This makes it possible to limit interference as much as possible during assembly of the gearbox 13 while facilitating the removal of the tool 10.
- the tool 10 is placed around the input shaft 12 of the gearbox 13, Preferably, the tool 10 is put in place before the lubrication of the input shaft 12 to avoid removing grease from said shaft 12.
- the gearbox 13 is approached near a coupling hub 15 associated with the heat engine 16.
- the operator can then manipulate the handle 21 of the tool 10 vertically along the arrows F1 to exert a slight rotation of the input shaft 12 along the arrow F2, so as to mesh the grooves 1 1 of the input shaft 12 of the gearbox 13 with the complementary grooves of the coupling hub 15.
- a rotation of plus or minus 10 degrees maximum is sufficient to index the teeth of the grooves 1 1 in relation to each other.
- the operator can then extract the tool 10 by pulling radially on the handle 28 according to arrow F3 and engage the input shaft 12 of the gearbox 13 in the coupling hub 15.
- the extraction of the tool 10 is preferably carried out while there are a few millimeters of travel to be performed, in particular at least 3mm. These operations can for example be repeated twice per minute.
- the end portion 18 of the tool 10 has a single arm 20 in the form of a hook.
- the arm 20 comprises at least one tooth 31 intended to be inserted between two grooves 1 1 of the input shaft 12 of the gearbox 13.
- This form requires more complex manipulation to disengage the tool 10 from the input shaft 12 of the gearbox 13 before being able to extract it. Indeed, it is necessary to first perform a rotation along arrow F4 to disengage the lower part of the tool 10, then a first translation along arrow F5 to disengage tooth 31 from the grooves 1 1 of the shaft input 12, and a second translation along arrow F6 to clear the assembly of the tool 10 and finalize the assembly of the gearbox 13 with the heat engine 16.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Hand Tools For Fitting Together And Separating, Or Other Hand Tools (AREA)
- Drilling Tools (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1857727A FR3085455B1 (fr) | 2018-08-28 | 2018-08-28 | Outil d'alignement angulaire de cannelures d'un arbre cannele avec des cannelures de forme complementaire d'un moyeu d'accouplement |
| PCT/FR2019/051718 WO2020043968A1 (fr) | 2018-08-28 | 2019-07-09 | Outil d'alignement angulaire de cannelures d'un arbre cannele avec des cannelures de forme complementaire d'un moyeu d'accouplement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3844421A1 true EP3844421A1 (fr) | 2021-07-07 |
Family
ID=65201186
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19753158.5A Withdrawn EP3844421A1 (fr) | 2018-08-28 | 2019-07-09 | Outil d'alignement angulaire de cannelures d'un arbre cannele avec des cannelures de forme complementaire d'un moyeu d'accouplement |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP3844421A1 (fr) |
| FR (1) | FR3085455B1 (fr) |
| WO (1) | WO2020043968A1 (fr) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH276800A (de) * | 1949-10-20 | 1951-07-31 | Steiner Otto | Schlüsselzange. |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6227987B2 (ja) * | 2013-11-29 | 2017-11-08 | ダイハツ工業株式会社 | 車両における走行用駆動装置の組み立て用治具、およびこの治具を用いた車両における走行用駆動装置の組立方法 |
| US9797499B2 (en) * | 2014-08-12 | 2017-10-24 | Baldor Electric Company | Method of installing a motor on a gear box |
| FR3029166B1 (fr) | 2014-12-02 | 2018-05-18 | Psa Automobiles Sa. | Dispositif d'indexation relative des cannelures d'un arbre primaire d'une boite de vitesses et d'un moyeu central d'un embrayage de moteur pour vehicule automobile |
-
2018
- 2018-08-28 FR FR1857727A patent/FR3085455B1/fr not_active Expired - Fee Related
-
2019
- 2019-07-09 EP EP19753158.5A patent/EP3844421A1/fr not_active Withdrawn
- 2019-07-09 WO PCT/FR2019/051718 patent/WO2020043968A1/fr not_active Ceased
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH276800A (de) * | 1949-10-20 | 1951-07-31 | Steiner Otto | Schlüsselzange. |
Also Published As
| Publication number | Publication date |
|---|---|
| FR3085455B1 (fr) | 2020-08-21 |
| FR3085455A1 (fr) | 2020-03-06 |
| WO2020043968A1 (fr) | 2020-03-05 |
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