EP1163961A1 - Verfahren und Drückvorrichtung zur Herstellung eines Getriebeteiles - Google Patents
Verfahren und Drückvorrichtung zur Herstellung eines Getriebeteiles Download PDFInfo
- Publication number
- EP1163961A1 EP1163961A1 EP01102425A EP01102425A EP1163961A1 EP 1163961 A1 EP1163961 A1 EP 1163961A1 EP 01102425 A EP01102425 A EP 01102425A EP 01102425 A EP01102425 A EP 01102425A EP 1163961 A1 EP1163961 A1 EP 1163961A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- tool
- blank
- clamping
- axially
- face
- 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.)
- Granted
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D53/00—Making other particular articles
- B21D53/26—Making other particular articles wheels or the like
- B21D53/28—Making other particular articles wheels or the like gear wheels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/14—Spinning
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D53/00—Making other particular articles
- B21D53/26—Making other particular articles wheels or the like
- B21D53/261—Making other particular articles wheels or the like pulleys
Definitions
- the invention relates on the one hand to a method for the production a gear part with a hub from a round blank, which on a tool of a rotating drivable spindle Pressing machine is arranged and clamped and by means of at least one pressure roller reduces the thickness of the round blank and the resulting material is transformed into a hub becomes.
- the invention relates to a pushing device with a rotating drivable spindle, at least one adjustable spinning roller and one attached to the spindle Tool for holding a round blank.
- a generic method and a generic device can be seen, for example, from DE 198 49 981 C1.
- the blank is against an annular tool by means of a cylindrical one Pressing element pressed.
- axial clamping can be an outer area of a Ronde can be processed very well.
- axial clamping can, however, be within the trainee Do not avoid a certain radial disc area, which may be in a later step must be removed.
- a device with a separate Abutment chuck is further apparent from DE 44 44 526 C1. The abutment chuck that works with the tool can be placed on the circumferential edge of the round blank.
- the invention has for its object to provide a method and an apparatus with which a simple and reliable holding of the workpiece on the tool is given, while at the same time a high degree of design freedom is ensured when forming the hub.
- the task is accomplished on the one hand by a procedure with the Features of claim 1 or alternatively by a method with the features of claim 6 or claim 7 solved.
- the task is performed by a device with the features of claim 10 or alternatively by solved a device with the features of claim 15.
- the first method according to the invention is characterized in that that the circular blank is clamped by axial pressure of a blank area of the blank against the tool and simultaneously expanding the circular blank radially and that when expanding the circular blank radially this against an annular circumferential direction Wall is formed on the tool, the round blank non-positively and / or positively held on the tool becomes.
- a basic idea of the invention is the tool to be provided with an annular wall, which only slightly is larger than the blank used in it.
- the Ronde is then replaced by a axial contact force radially expanded and thus against the annular wall either radially outwards or radially shaped inside. This results in a force and / or positive connection between the blank and the tool.
- the blank is then clamped to the tool through an interaction between the formed blank and the surrounding annular wall or a central centering pin reached on the tool.
- the device can thus be trained easily and inexpensively, the whole Area of the circular blank machined free from the spinning roller can be. It is a particularly high degree of design freedom given for machining the round blank and for the hub.
- the Pressing machine that can be used for this is with the exception of the pressing element basically constructed as in the the applicant describes DE 198 49 981 C1 going back, the disclosure of which is expressly the subject of this application is.
- the ring-shaped heel can be this embodiment directly on the front of the Be trained tool.
- the circumferential edge of the face of the tool with a chamfer can be provided, which in turn in the axially preceding paragraph transforms.
- the outer edge region of the round blank in the axial direction be reshaped, the bevel angle being the bend angle of the edge area of the circular blank.
- the shoulder is dimensioned in the axial direction so that it is preferably over the face of the tool survives.
- a preferred development of the invention consists in that reducing the thickness of the blank by radial feeding a spinning roller, the spinning roller at the same time the blank with a defined axial force presses axially against the tool.
- the spinning roller thus also has an axial force component on which a non-rotatable connection between the blank and the tool supported.
- a particularly reliable process sequence is the subject of the invention in that until the generation of the Force and / or form-fit the blank using a separate Holding device, in particular a magnetic clamping device or a vacuum chuck on the tool is held.
- a separate Holding device in particular a magnetic clamping device or a vacuum chuck on the tool
- a controllable Electromagnetic coil on the tool or the arrangement of Vacuum channels on the tool open to the workpiece, which are a vacuum generator connected to the line the round blank can be inserted into the ring Tool can be fixed.
- the final clamping takes place then according to the invention by pressing the pressure roller and reshaping the edge area of the circular blank in an axial Undercut area and / or radial driver element on the ring-shaped wall of the tool.
- the pressing element Support hub material when molding the hub.
- the pressing element is designed so that the outer contour of the pressing element has an area that corresponds to an area the inner contour of the hub to be formed corresponds.
- the pressing element is used in this embodiment So as a tool mandrel, with the help of the inner contour of the This is how the hub is preformed while the hub is being shaped is that at most a comparatively minor Reworking the hub is required.
- the pressing element with one from the front protruding pin of the tool engages, through a receiving opening formed on the round blank protrudes. After the radial expansion to hold the blank on The pressing element is moved away by the tool.
- the pin provided on the tool the hub material support when shaping the hub similar to the previous one described embodiment, the outer contour of the pin has an area that corresponds to an area of the inner contour corresponds to the hub to be formed, so that here too at best a slight reworking of the hub a later date is required.
- the above-mentioned object can alternatively be according to the invention can also be solved by a method which thereby is marked that the blank is attached to the tool first pressed axially by a first pressing element which is in contact with a first section of the round blank, that in a first step the thickness the round plate in a second section, which differs from the first sub-area is reduced, that to the second section after reducing it Thickness of a second pressure element, which is preferably as Pressure roller is formed, which is the Round blank for establishing a positive connection presses axially against the tool, that then the first Pressure element is removed from the round blank and that subsequently the thickness of the blank in the first section is reduced.
- This method according to the invention is also not complex Jig, but a conventional one Pressure element necessary, the combination with a another pressing element in an intermediate stage as well a high degree of design freedom and free reshaping of the entire disk surface on one side.
- the task mentioned after the Invention solved by a method in which to keep the disc on the tool is axial and at the same time radial Clamping movement between the blank and several on the tool movably provided clamping elements executed in this way is that the blank is non-positively and / or positively on the tool is supported.
- the round blank be tightened using a Holding element defined on the front of the tool to hold, the holding element when tensioning the blank an actuating device coupled to the tensioning elements of the tool so adjusted that the clamping elements for holding the circular blank axially and radially become.
- the actuated actuating device coupled to the clamping elements, to tighten the round plate on the tool, so that an additional Actuator for the actuator can be omitted.
- the actuating device is preferably as an axially movable in the tool Support element formed against the end face the blank for tensioning the one designed as a pressing element Holding element is pressed axially.
- the axial Press the blank from the pressure element against the support element becomes the support element with respect to the tool axially moved, so that the movable on the tool Clamping elements grasp the blank.
- the holding element at Tensioning the circular blank at least in sections for actuation the adjusting device accommodated in the tool by a on the blank formed opening in a tool trained actuating opening is moved.
- the holding element is used in this embodiment of the So the process simultaneously to actuate the actuating device, with which the clamping elements are adjusted.
- an annular, in Circumferential direction wall is formed on the the blank by radial expansion non-positively and / or positively is mountable, and that an ejector device is provided.
- the ring-shaped wall of the tool points an inner diameter which is slightly larger than the outer diameter of the round blank is such that an almost backlash-free insertion of the blank is granted.
- This annular wall will position the exact location Ronde reached on the spindle, being by radial expansion the blank is a non-positive and / or positive, non-rotatable connection of the circular blank with the tool and thus can be generated with the spindle.
- the ejector device which in particular an axially movable stamp or a support element allows the round blank to be removed easily.
- the wall is formed on an annular shoulder, the axially with respect to the end face of the tool protrudes. It is also possible to on the front of the Tool form a circumferential groove, the one groove wall at least partially the one running in the circumferential direction Wall forms.
- the profiling can be in an axial undercut or in the arrangement of radially directed driver elements formed along the inside of the annular wall his.
- the driver elements can have a toothing, in particular form spur gear teeth on the workpiece.
- the driver elements run in the axial direction trained that an ejector axially the workpiece can remove the tool.
- the task is accomplished by a pushing device solved with the features of claim 15.
- Pressing devices are clamping elements on the tool provided, with a relative movement between the blank and the clamping elements in axial and radial Direction the round plate can be held on the tool.
- the round blank is attached to both the face of the Tool used as well as recorded on its outer circumference, whereby the blank is centered on the one hand during tensioning and on the other hand is securely held on the tool.
- the clamping elements are in a preferred embodiment this pressing device is wedge-shaped and in The receptacles provided on the tool are kept displaceable. Each recording is inclined to the longitudinal direction of the tool-running footprint, along the respective clamping element in the axial direction is so displaceable that the clamping element in question axial and radial clamping movements with respect the front of the tool. It is also proposed an axially displaceable support element on the tool to provide, on which the end face to the blank is trained and at the same time as an actuator serves for the clamping elements.
- the support element is for this purpose coupled with the tensioning elements that at a axial movement of the support element, the clamping elements radial and possibly also an axial movement with respect the front of the support element.
- an adjusting device on the tool can be provided by a holding element that is defined Hold the blank on the front of the tool serves, can be actuated.
- the control device coupled with the tensioning elements to this as soon as the actuating device is actuated by the holding element will move radially and possibly also axially.
- the actuating device can optionally also be electrical or be hydraulically actuated to the clamping elements for To operate the round blank.
- a pressing element as Provide holding element on which a centering device is provided for centering the blank on the tool.
- Fig. 1 shows a sectional view of a first embodiment a pressing device 10 for producing a Gear part 12 with hub 14 from a blank 16.
- the pressing device 10 is in Fig. 1 in various stages of the process shown. So shows the left of the axis of rotation R of the pushing device 10 can be seen the Pushing device 10 when tensioning the blank 16. The right the view seen from the axis of rotation R shows the Pushing device 10 during the molding of the hub 14.
- the pressing device 10 has a tool 18, which by means of a drive, not shown, about the axis of rotation R is rotatable.
- a groove 22 is formed concentrically to the axis of rotation R.
- a groove wall 24 with a greater radial distance from Rotation axis R runs at least approximately parallel to Axis of rotation R and forms a wall, the purpose of which later will be explained later.
- An inner groove wall 26 with less radial distance to the axis of rotation R goes under formation a curve in the end face 20.
- the embodiment is the outer groove wall 24 distance smoothly formed.
- outer groove wall 24 shaped elements such as teeth, grooves or similar to train to form fit with the one to be formed later Manufacture blank 16.
- the Groove base of the groove 22 provided with corresponding shaped elements his.
- the tool 18 is also concentric to the axis of rotation R a cylindrical ejector 28 is slidably received, with which the finished transmission part 12 after completion of the pressure rolling process can be released from the tool 18.
- a center hole is also concentric to the axis of rotation R. 30 formed in the ejector 28, which is for receiving a centering pin 32 of a holding element 34 serves, as Fig. 1 shows.
- the holding element 34 has one adjoining the centering pin 32 supporting section 36 with a round cross-section, which in turn in a holding device 38 passes.
- the pressing device 10 For shaping the hub 14, the pressing device 10 a spinning roller 40, which in a common rotation of the tool 18 with the holding element 34 radially in the direction is delivered to the center of the blank 16.
- the Press roller 40 has a cutting edge 42, the to the cutting edge 42 adjacent peripheral surfaces of the Pinch roller 40 at an acute angle.
- To the Cutting edge 42 is followed by a compression area 44 which in turn limited by a projection 46 of the spinning roller 40 is.
- the blank is first 16 attached to the end face 20 of the tool 18 and that axially movable holding element 34 against the end face 20 moved so that the centering pin 32 by one on the Ronde 16 trained receiving opening 48 is guided and enters the centering mold 30.
- the holding element 34 is thereby moved axially in the direction of the end face 20, that at the transition between the centering pin 32 and the Support portion 36 formed paragraph 50 on the front the blank 16 abuts and so the blank 16 against the tool 18 preloaded.
- the tool 18 and the holding element 34 is rotated and the spinning roller 40 delivered, whereby the circular blank 16 extends radially and molded into the groove 22 with its edge region becomes. In this way, the blank 16 is non-positively the end face 20 of the tool 18 clamped.
- the pressure roller 40 becomes radial in the direction of the axis of rotation R moves, the cutting edge 40 with the Round 16 comes into engagement.
- the radial delivery of the Press roller 40 is partially separated material from the blank 16 and guided along the compression area 44 so that starting from the round blank 16, a revolving, while of the delivery process always changing collar.
- the axial flow of material is through the projection 46 Press roller 40 limited.
- the hub 14 turns on the gear part 12 to be manufactured from the blank 16 is formed, the holding element 34 serves as a tool mandrel the transition between the centering pin 32 and the Support section 36, on which the hub 14 is formed, at least partly for shaping the later inner contour Inner contour of the hub 14 is used.
- the spinning roller 40 moved away from the forming point, the holding element 34 Move away from tool 18 and then the finished one Gear part 12 using ejector 28 from tool 18 solved. This will release the finished gear part 12 due to the curvature on the groove wall 26 with little radial Distance easier because of the edge area of the gear part 12 is also rounded at the bottom.
- FIGS. 2 and 3 show a second embodiment a pushing device 60, which is essentially constructed the structure of the pressing device 10 of the first embodiment equal.
- the pushing device 60 differentiates only compared to the pressing device 10 the ejector 62 used and the holding element used 64.
- the pressing device 60 is from the front the ejector 62 axially from a centering pin 66, the arranged concentrically to the axis of rotation R of the tool 18 is.
- the holding element 64 also has a concentric centering opening formed to the axis of rotation R. 68 with which the centering pin 66 engages can be brought, as Figure 2 shows.
- the blank 16 is also its receiving opening 48 initially on the centering pin 66 put on. Then the holding element 64 is against the tool 18 moves, the centering opening 68 with the centering pin 66 comes into engagement.
- the holding element 64 is biased axially against the tool 18 so strongly that the blank 16 rotatably with the tool 18 and the holding element 64 is connected. Then the tool 18 and the holding element 64 in rotation and how in the first embodiment, using the spinning roller 40 the blank 16 is initially expanded radially. Through the radial Widening the circular blank 18 is molded into the groove 22, so that there is a positive connection between the blank 16 and the tool 18 forms.
- the centering pin 66 is used here as a tool mandrel for the hub 14 to be formed appropriate design of the centering pin 66 can this way, a hub 14 can be formed, the one Has through hole with a constant diameter.
- Fig. 4 shows a fourth embodiment of a pressing device 70, which is essentially the same in its structure Structure of the pressing device 10 corresponds.
- the pressing device 70 opposite the pressing device 10 consists of the tool 72 used
- the tool 72 also has an ejector 74 with a center hole 76.
- the cross section is circular Ejector 74 has an outer diameter that is only slightly smaller than the outside diameter of the round blank 16 to be shaped.
- Each clamping element 78 is formed in a tool 72 Recording 80 slidably mounted, the recording 80 on its tangential to the peripheral surface of the ejector 74 extending inner surface is chamfered and itself starting from the end face 84 of the tool 72 inwards rejuvenated.
- Elements are the tensioning elements 78 in the direction of Face 84 biased so that it faces the face Complete 84 flush, as shown in Fig. 4.
- guide elements not shown in the receptacles 80 provided that the clamping elements 78 fall out prevent the recordings 80.
- the circular blank is used to clamp the blank 16 on the tool 72 held against the end face of the ejector 74, which, like 4 shows, slightly inwards from the end face 84 of the tool 62 is moved away. Then with help of the holding element 34, the blank 16 against the ejector 74 axially biased, the pusher 74 axially after is moved inside the tool 72.
- the ejector 74 By moving of the ejector 74 are only a short distance away to the outer periphery of the blank 16 arranged clamping elements 78 in contact with the outer periphery of the blank 16 and are carried along by the axial movement of the holding element 34. Due to the oblique course of the as storage space serving inner surfaces 82 the radial distance between the shifting within the recordings 78 Clamping elements 78, whereby the round blank 16 on its outer circumference is excited.
- the Round 16 is formed with the help of the pressure roller 40, also here the holding element 34 as a tool mandrel for the one to be shaped Hub 14 is used.
- the holding member 34 is moved away from the tool 72 and the pusher 74 moves axially in the direction of the end face 84.
- the clamping elements 78 are axially inside of the receptacles 80 shifted, causing the radial distance between the clamping elements 78 is enlarged and the Release clamping elements 78 the finished gear part 12.
- the pusher 74 can continue axially on the tool 72 are moved while the holding element 34 is also moving axially with the blank 16 demonstrably held on the ejector 74 becomes.
- the edge region can then be used as a round blank 16 16 with the help of a further pressure roller (not shown) folded and, for example, provided with a profile, without the round blank 16 having to be reclamped.
- the pressing device 70 is in the process of being formed Full hub shown.
- the holding element 34 for example, the holding element shown in Figures 2 used with which the blank 16 against the ejector 74th is biased until the blank 16 from the clamping elements 78 is held. Then the holding element moved away and the gear part using the spinning roller 40 formed in the shape shown in Fig. 5. The The finished gear part is released from the tool 72 in the same way by axially adjusting the ejector 74 in the direction of the end face 84.
- FIG. 6 shows a fourth exemplary embodiment in a sectional view a pushing device 90.
- the pushing device 90 has a tool 92, concentric with the axis of rotation R an insert 94 is received and on the tool 92 is attached.
- the end face 96 of the insert 94 serves as a contact surface for the blank 16 to be shaped, as shown in FIG. 6 shows.
- the Clamping elements 98 and the receptacles 100 essentially correspond the clamping elements 78 and the receptacles 80 of the Pushing device 70.
- An actuating device 102 is also in the insert 74 axially displaceably added.
- the actuating device 102 has a plurality of adjusting pins 104 which protrude radially outwards. Each peg protrudes 104 through an opening 106 formed in the insert 94 one of the receptacles 100.
- Each adjusting pin 104 stands with one formed on the corresponding clamping element 98 Bore 107 engages, so that an axial adjustment the adjusting device 102 the clamping elements 98 be shifted within the recordings 100.
- the clamping elements 98 are adjusted axially and in Dependence on the actuating movement at the same time radially moved towards or away from each other.
- adjusting opening 108 formed on the end face 96 of the insert 94 ends.
- the opening 108 ends at its other end in a receiving bore 110, in which the actuating device 102 is slidably received is. Also protrudes into the receiving bore 110 from the a piston 112 of the side facing away from the adjusting opening 108 hydraulic actuator, the purpose of which will be explained later becomes.
- the pressing device 90 also has a holding element 114 on, of which an actuating pin 116 in the axial direction protrudes.
- the blank 16 is first attached to the End face 96 of the insert 94 created and then the holding element 114 moves axially towards the tool 92 so far, until the actuating pin 116 through the receiving opening 48 of the blank 16 in the opening 108 of the insert 94 protrudes.
- the holding member 114 is further axially in the direction of the tool 92 moves, the holding member 114 with the end face of its actuating pin 116 with the actuating device 102 comes into contact and this within the Location bore 110 axially displaces.
- the pressing device 130 has a tool 132 and one concentric to the axis of rotation R in the tool 132 held insert 134 on.
- the insert 134 is with his Face 136 with respect to face 138 of the tool 132 moved backwards, whereby a recording is formed becomes.
- On the end face 136 of the insert 134 is also a centering pin 140 is provided, which is concentric to the axis of rotation R arranged from its end face 136 protrudes.
- Each receptacle 144 has one inclined footprint 146 extending to the axis of rotation R, see above that the receptacle 144 is in the direction of the end face 138 of the tool 132 is tapered.
- a receiving bore 148 is located within the insert 134 formed in which an actuator 150 slidably is recorded, the one with the aid of a piston 152 hydraulic actuator can be adjusted.
- Actuator 150 is similar to the actuator 102 of the pressing device 190 with protruding radially outwards Adjusting pin 154 provided by appropriate Project openings 156 on insert 134 into receptacle 144.
- Each peg stands with one on the peg 154 associated clamping element 142 trained adjusting openings 158 engaged.
- the holding element 160 has a pressing section 162 larger diameter, on the front side of a centering opening 164 designed to receive the centering pin 140 is. On the pressing section 164 there is also a Centering ring 166 of a centering device is displaceable stored.
- the centering ring 166 is made up of several compression springs 168 axially biased in the direction of the tool 132, the compression springs 148 on one on the holding element 160 trained shoulder 170 support. At his front flat side, the centering ring 166 has a centering 172 on.
- the round plate 16 is used to clamp the round plate 16 on the tool 132 with its receiving opening 48 on the centering pin 140 put on and then the holding element 160 axially in Direction of the tool 132 moves.
- the pressing section 162 abuts the round blank 16 with its end face, is the blank 16 using the centering ring 166 on the Face 136 of the insert 134 aligned.
- the actuating device 150 in Moves towards the end face 136 of the insert 134, wherein the clamping elements 142 axially within the receptacles 144 be moved and move radially towards each other. In this way, the blank 16 is clamped on the tool 132, as Fig. 9 shows.
- the clamping elements 142 Since the insert 134 compared to the Outer periphery of the blank 16 has a slightly smaller diameter has, the clamping elements 142, the blank 16 in capture their edge area. To process the round blank 16 to enable in the peripheral areas, too Clamping elements 142 designed in their axial dimensions so that their end faces are flush with the end face Complete 138 of tool 132 while the blank 16 slightly over the end face 138 of the tool 132 protrudes.
- the holding element 160 After the blank 16 is held on the tool 132, is moves the holding element 160 back into its starting position, in which it is located away from tool 132. Thereafter, the blank 16 is in the manner previously described molded with the help of the pressure roller 40, the here too Centering pin 140 as a tool mandrel for the formation of the Inner contour of the hub 14 can be used.
- the five exemplary embodiments described above show only different options, such as a pushing device can be designed in accordance with the invention.
- a pushing device can be designed in accordance with the invention.
- the pressing device 70 it is also conceivable with the pressing device 70 to provide a centering device on the holding element, as shown in the fifth embodiment.
- the pressing device 70 it is also conceivable, for example, in the pressing device 70 to form a centering pin on the tool 72.
- previously described pushing devices additionally with magnetic clamping device or vacuum clamping devices.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
Description
- Fig. 1
- eine Schnittansicht eines ersten Ausführungsbeispieles einer Drückvorrichtung mit einer an der Stirnseite des Werkzeuges ausgebildeten Nut;
- Fig. 2
- eine Schnittansicht eines zweiten Ausführungsbeispieles einer Drückvorrichtung mit einer an der Stirnseite des Werkzeuges ausgebildeten Nut und einem an der Stirnseite vorgesehenen Zentrierzapfens beim Spannen der Ronde;
- Fig. 3
- eine Schnittansicht des zweiten Ausführungsbeispieles nach Fig. 2 beim Ausformen der Nabe;
- Fig. 4
- eine Schnittansicht eines dritten Ausführungsbeispieles einer Drückvorrichtung mit einem im Werkzeug axial verschieblichen Stützelement und mehreren Spannelementen zum Spannen einer Ronde;
- Fig. 5
- eine Schnittansicht des dritten Ausführungsbeispieles beim Ausformen einer Vollnabe;
- Fig. 6
- eine Schnittansicht eines vierten Ausführungsbeispieles einer Drückvorrichtung mit einer Stelleinrichtung zum Verstellen von Spannelementen, die durch ein Halteelement betätigbar ist;
- Fig. 7
- eine Schnittansicht der Drückvorrichtung nach Fig. 6 beim Ausformen der Nabe;
- Fig. 8
- eine Schnittansicht eines fünften Ausführungsbeispieles einer Drückvorrichtung mit einer hydraulisch aktivierbaren Stelleinrichtung zum Betätigen von Spannelementen sowie einer an einem Andrückelement vorgesehenen Zentriereinrichtung; und
- Fig. 9
- eine Schnittansicht der Drückvorrichtung nach Fig. 8 beim Ausformen der Nabe.
Claims (20)
- Verfahren zur Herstellung eines Getriebeteils (12) mit Nabe (14) aus einer Ronde (16), welche an einem Werkzeug (18) einer rotierend antreibbaren Spindel einer Drückmaschine (10; 60) angeordnet und eingespannt wird, mittels mindestens einer Drückrolle (40) eine Dicke der Ronde (16) verringert und das dabei anfallende Material zu der Nabe (14)geformt wird,
dadurch gekennzeichnet,dass das Einspannen der Ronde (16) durch axiales Andrücken eines Randbereiches der Ronde (16) gegen das Werkzeug (18) und gleichzeitiges radiales Erweitern der Ronde (16) durchgeführt wird unddass beim radialen Erweitern der Ronde (16) diese gegen eine ringförmige, in Umfangsrichtung verlaufende Wand (24) an dem Werkzeug (18) geformt wird, wobei die Ronde (16) kraft- und/ oder formschlüssig an dem Werkzeug gehaltert wird. - Verfahren nach Anspruch 1,
dadurch gekennzeichnet, dass die in Umfangsrichtung verlaufende Wand vollständig umläuft und von einem ringförmigen Absatz gebildet ist, der bezüglich der Stirnseite des Werkzeuges, gegen die die Ronde beim radialen Erweitern gedrückt wird, axial vorsteht. - Verfahren nach Anspruch 1 oder 2,
dadurch gekennzeichnet, dass an der Stirnseite (20) des Werkzeuges (18), gegen die die Ronde (16) beim radialen Erweitern gedrückt wird, eine umlaufende Nut (22) ausgebildet ist, deren eine ringförmige Nutwand (22) zumindest teilweise die in Umfangsrichtung verlaufende Wand bildet. - Verfahren nach Anspruch 1, 2 oder 3,
dadurch gekennzeichnet, dass das Verringern der Dicke der Ronde (16) durch radiales Zustellen der Drückrolle (40) erfolgt, wobei die Drückrolle (40) gleichzeitig die Ronde (16) mit einer definierten Axialkraft axial gegen das Werkzeug (18) drückt. - Verfahren nach einem der Ansprüche 1 bis 4,
dadurch gekennzeichnet, dass bis zum Erzeugen des Kraft- und/oder Formschlusses die Ronde (16) mittels einer separaten Halteeinrichtung, insbesondere einer Magnetspanneinrichtung oder einer Vakuumspanneinrichtung, an dem Werkzeug gehaltert wird. - Verfahren nach dem Oberbegriff des Anspruchs 1,
dadurch gekennzeichnet,dass die Ronde an das Werkzeug zunächst durch ein erstes Andrückelement axial angedrückt wird, welches an einem ersten Teilbereich der Ronde anliegt,dass anschließend die Dicke der Ronde in einem zweiten Teilbereich, welcher sich von dem ersten Teilbereich unterscheidet, verringert wird,dass an den zweiten Teilbereich nach dessen Verringerung der Dicke ein zweites Andrückelement, das vorzugsweise als Andrückrolle ausgebildet ist, zugestellt wird, welches die Ronde zur Herstellung einer kraftschlüssigen Verbindung axial gegen das Werkzeug drückt,dass daraufhin das erste Andrückelement von der Ronde entfernt wird unddass abschließend die Dicke der Ronde in dem ersten Teilbereich verringert wird. - Verfahren nach dem Oberbegriff des Anspruchs 1,
dadurch gekennzeichnet, dass zum Haltern der Ronde (16) am Werkzeug (72; 92; 132) eine axiale und gleichzeitig radiale Spannbewegung zwischen der Ronde (16) und mehreren am Werkzeug (72; 92; 132) beweglich vorgesehenen Spannelementen (78; 98; 142) ausgeführt wird, durch welche die Ronde (16) kraft- und/oder formschlüssig am Werkzeug (72; 92; 132) gehaltert wird. - Verfahren nach Anspruch 7,
dadurch gekennzeichnet,dass die Ronde (16) beim Spannen mit Hilfe eines Halteelements (34; 114) an der Stirnseite des Werkzeuges (72; 92) definiert gehalten wird unddass das Halteelement (34; 114) beim Spannen der Ronde (16) eine mit den Spannelementen (78;98) gekoppelte Stelleinrichtung (74;102) axial bezüglich des Werkzeuges (72;92) derart verstellt, dass die Spannelemente (78;98) zum Haltern der Ronde (16) axial und radial zugestellt werden. - Verfahren nach Anspruch 8,
dadurch gekennzeichnet,dass die Stelleinrichtung (74; 102) als ein axial im Werkzeug bewegliches Stützelement (74) ausgebildet ist, gegen dessen Stirnseite die Ronde (16) zum Spannen von dem als Andrückelement (34) ausgebildeten Halteelement (34; 114) axial gedrückt wird unddass das Andrückelement (34) das Stützelement (74) beim Spannen bezüglich des Werkzeuges (72) derart axial bewegt, dass die am Werkzeug beweglich vorgesehenen Spannelemente (78) zum Spannen der Ronde (16) radial und gegebenenfalls auch axial bewegt werden. - Drückvorrichtung, insbesondere zur Durchführung des Verfahrens nach einem der Ansprüche 1 bis 9, miteiner rotierend antreibbaren Spindel,mindestens einer zustellbaren Drückrolle (40) undeinem an der Spindel angebrachten Werkzeug (18) zum Haltern einer Ronde (16),
- Drückvorrichtung nach Anspruch 10,
dadurch gekennzeichnet, dass die in Umfangsrichtung verlaufende Wand von einem ringförmigen Absatz gebildet ist, der bezüglich der Stirnseite des Werkzeuges, an der die Ronde beim Haltern zumindest teilweise zur Anlage kommt, axial vorsteht. - Drückvorrichtung nach Anspruch 10 oder 11,
dadurch gekennzeichnet, dass an der Stirnseite (20) des Werkzeugs (18), an der die Ronde (16) beim Haltern zumindest teilweise zur Anlage kommt, eine umlaufende Nut (22) ausgebildet ist, deren eine Nutwand (24) zumindest teilweise die in Umfangsrichtung verlaufende Wand bildet. - Drückvorrichtung nach Anspruch 10, 11 oder 12
dadurch gekennzeichnet, dass an einer zur Ronde gerichteten Umfangsseite der ringförmigen Wand eine Profilierung zur Herstellung eines Formschlusses ausgebildet ist. - Drückvorrichtung nach einem der Ansprüche 10 bis 12,
dadurch gekennzeichnet, dass an dem Werkzeug zum zumindest vorläufigen Spannen der Ronde eine als Magnetspanneinrichtung oder als Vakuumspanneinrichtung ausgebildete Halteeinrichtung vorgesehen ist. - Drückvorrichtung nach dem Oberbegriff des Anspruches 10,
bei der am Werkzeug (72; 92; 132) mehrere Spannelemente (78; 98; 142) zum Spannen der Ronde (16) vorgesehen sind, die um die Stirnseite (84; 96; 136) des Werkzeuges (72; 92; 132) angeordnet sind, an der die Ronde (16) beim Spannen zur Anlage kommt,
dadurch gekennzeichnet, dass zum Haltern der Ronde (16) am Werkzeug (72; 92; 132) die Stirnfläche (84; 96; 136) und die Spannelemente (78; 98; 142) relativ zueinander axial und radial bewegbar sind. - Drückvorrichtung nach Anspruch 15,
dadurch gekennzeichnet,dass die Spannelemente (78; 98; 142) keilförmig ausgebildet und in am Werkzeug (72; 92; 132) vorgesehenen Aufnahmen (80; 100; 144) verschieblich gehalten sind unddass jede Aufnahme (80; 100; 144) eine geneigt zur Längsrichtung des Werkzeuges (72; 92; 132) verlaufende Stellfläche (82; 146) aufweist, entlang der das jeweilige Spannelement (78; 98; 142) in axialer Richtung derart verschieblich ist, dass das betreffende Spannelement (78; 98; 142) eine axiale und eine radiale Spannbewegung bezüglich der Stirnseite (84; 96; 136) des Werkzeuges (72; 92; 132) ausführt. - Drückvorrichtung nach Anspruch 15 oder 16,
dadurch gekennzeichnet,dass das Werkzeug (72) ein als Stelleinrichtung dienendes, axial verschiebliches Stützelement (74) aufweist, an dem die Stirnseite zur Anlage der Ronde (16) ausgebildet ist, unddass das Stützelement (74) relativ zu den Spannelementen (78) bewegbar und mit diesen vorzugsweise durch die zu spannende Ronde (16) derart gekoppelt ist, dass die Spannelemente (78) bei einer axialen Bewegung des Stützelementes (74) eine radiale und gegebenenfalls auch eine axiale Bewegung bezüglich der Stirnseite des Stützelementes (74) ausführen. - Drückvorrichtung nach Anspruch 15 oder 16,
dadurch gekennzeichnet,dass das Werkzeug (92) eine Stelleinrichtung (102) aufweist, die von einem Halteelement (114), das zum definierten Halten der Ronde (16) an der Stirnseite (96) des Werkzeuges (92) dient, betätigbar ist, unddass die Stelleinrichtung (102) derart mit den Spannelementen (98) gekoppelt ist, dass die Spannelemente (98) bei einer Betätigung der Stelleinrichtung (102) durch das Halteelement (114) eine radiale und gegebenenfalls auch axiale Bewegung bezüglich der Stirnseite (96) des Werkzeuges (92) ausführen. - Drückvorrichtung nach Anspruch 15 oder 16,
dadurch gekennzeichnet,dass das Werkzeug eine elektrisch oder hydraulisch betätigbare Stelleinrichtung (150) aufweist, die mit den Spannelementen (142) derart gekoppelt ist, dass die Spannelemente (142) bei einer Betätigung der Stelleinrichtung (150) eine radiale und axiale Bewegung bezüglich der Stirnseite (136) des Werkzeuges (132) ausführen. - Drückvorrichtung nach einem der Ansprüche 10 bis 19,
dadurch gekennzeichnet,dass ein Andrückelement (160) als Halteelement vorgesehen ist, das die Ronde (16) zumindest beim Spannen axial gegen die Stirnseite (136) des Werkzeuges (132) drückt, unddass das Andrückelement (160) gegebenenfalls eine Zentriereinrichtung (166) zum Zentrieren der Ronde (16) am Werkzeug (132) aufweist.
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DE10029005 | 2000-06-13 | ||
DE10029005A DE10029005A1 (de) | 2000-06-13 | 2000-06-13 | Verfahren und Drückvorrichtung zur Herstellung eines Getriebeteiles |
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EP1163961A1 true EP1163961A1 (de) | 2001-12-19 |
EP1163961B1 EP1163961B1 (de) | 2002-06-05 |
EP1163961B2 EP1163961B2 (de) | 2010-03-03 |
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EP (1) | EP1163961B2 (de) |
AT (1) | ATE218403T1 (de) |
DE (2) | DE10029005A1 (de) |
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DE102006022726A1 (de) † | 2006-04-21 | 2007-11-08 | Wf-Maschinenbau Und Blechformtechnik Gmbh & Co Kg | Verfahren zur Herstellung eines Fahrzeugrades aus Stahl |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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DE4444526C1 (de) * | 1994-11-30 | 1995-11-30 | Wf Maschinenbau Blechformtech | Drückvorrichtung zur spanlosen Herstellung einer Nabe eines die Nabe aufweisenden Getriebeteiles |
EP0815983A1 (de) * | 1996-06-24 | 1998-01-07 | The Gates Corporation | Nabe, Riemenscheibe und Verfahren |
DE19849981A1 (de) * | 1998-10-29 | 1999-04-15 | Leico Werkzeugmaschb Gmbh & Co | Verfahren zum Formen einer Nabenscheibe und Drückrolle zur Verwendung beim Formen einer Nabenscheibe |
Family Cites Families (1)
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DE19524089C1 (de) † | 1995-07-01 | 1996-09-05 | Wf Maschinenbau Blechformtech | Verfahren und Vorrichtung zur Herstellung eines Getriebeteiles aus einer Metallronde |
-
2000
- 2000-06-13 DE DE10029005A patent/DE10029005A1/de not_active Withdrawn
-
2001
- 2001-02-02 EP EP01102425A patent/EP1163961B2/de not_active Expired - Lifetime
- 2001-02-02 AT AT01102425T patent/ATE218403T1/de not_active IP Right Cessation
- 2001-02-02 DE DE50100005T patent/DE50100005D1/de not_active Expired - Lifetime
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4444526C1 (de) * | 1994-11-30 | 1995-11-30 | Wf Maschinenbau Blechformtech | Drückvorrichtung zur spanlosen Herstellung einer Nabe eines die Nabe aufweisenden Getriebeteiles |
EP0815983A1 (de) * | 1996-06-24 | 1998-01-07 | The Gates Corporation | Nabe, Riemenscheibe und Verfahren |
US5987952A (en) * | 1996-06-24 | 1999-11-23 | The Gates Corporation | Method for making a hub/pulley with a radially inward annular collar |
DE19849981A1 (de) * | 1998-10-29 | 1999-04-15 | Leico Werkzeugmaschb Gmbh & Co | Verfahren zum Formen einer Nabenscheibe und Drückrolle zur Verwendung beim Formen einer Nabenscheibe |
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ATE218403T1 (de) | 2002-06-15 |
EP1163961B1 (de) | 2002-06-05 |
EP1163961B2 (de) | 2010-03-03 |
DE10029005A1 (de) | 2001-01-18 |
DE50100005D1 (de) | 2002-07-11 |
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