Source: http://www.google.com/patents/US7172510?dq=7800613
Timestamp: 2014-12-17 21:11:15
Document Index: 488652346

Matched Legal Cases: ['art 11', 'art 11', 'art 21', 'art 11', 'art 11', 'art 11', 'art 11', 'art 11', 'art 11', 'art 11', 'art 11', 'art 11']

Patent US7172510 - Hub member and shaft journal assembly and method - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign inAdvanced Patent SearchPatentsA hub member and shaft joint assembly includes an inner joint part of a constant velocity joint and a shaft journal. The hub member has a central through-aperture with inner toothing for receiving the shaft journal, and outer ball tracks. The inner toothing is formed in a predetermined limited length...http://www.google.com/patents/US7172510?utm_source=gb-gplus-sharePatent US7172510 - Hub member and shaft journal assembly and methodAdvanced Patent SearchPublication numberUS7172510 B2Publication typeGrantApplication numberUS 11/100,869Publication dateFeb 6, 2007Filing dateApr 7, 2005Priority dateDec 5, 2001Fee statusPaidAlso published asDE10159776A1, DE10159776C2, US6877350, US20030130048, US20050176514Publication number100869, 11100869, US 7172510 B2, US 7172510B2, US-B2-7172510, US7172510 B2, US7172510B2InventorsPeter Fuhrmann, Herbert Frielingsdorf, Volker Hainz, Jean SpolmayeurOriginal AssigneeGkn Automotive GmbhExport CitationBiBTeX, EndNote, RefManPatent Citations (5), Referenced by (4), Classifications (22), Legal Events (3) External Links: USPTO, USPTO Assignment, EspacenetHub member and shaft journal assembly and methodUS 7172510 B2Abstract A hub member and shaft joint assembly includes an inner joint part of a constant velocity joint and a shaft journal. The hub member has a central through-aperture with inner toothing for receiving the shaft journal, and outer ball tracks. The inner toothing is formed in a predetermined limited length as far as a toothing run-out and is followed by a bore with a reduced diameter. The shaft journal has shaft toothing and, at a distance from the shaft end, a first conical step serving as a top face relative to the toothing run-out and directly contacting same. A larger second conical step is positioned axially spaced from the first step and forms a toothing end of the shaft toothing.
1. A hub member and shaft journal assembly comprising:
an inner joint part of a constant velocity universal ball joint in the form of a hub member (11) which comprises a central through-aperture (14) with an inner toothing (16) for receiving a shaft journal (12), and ball tracks (15) for receiving torque-transmitting balls on an outer circumference, wherein the inner toothing (16) is formed in a predetermined limited length as far as a toothing run-out (17) inside the through-aperture and is followed by a bore (18) with a reduced diameter; and
a shaft journal (12) having shaft toothing (19) introduced into the inner joint part, the shaft journal (12) having, at a distance from a shaft end, a first conical step (22) which serves as a stop face relative to the toothing run-out (17) of the inner toothing (16) at the inner joint part and directly contacting said toothing run-out (17), and a larger second conical step (21), which is positioned at an axial distance from the first conical step (22) and which forms a toothing end of the shaft toothing (19).
2. A hub member and shaft journal assembly according to claim 1, wherein the inner toothing (16) in the through-aperture (14) is produced by pressing or profile slotting in a non-chip-forming way.
3. A hub member and shaft journal assembly according to claim 2, wherein the ball tracks (15) are calibrated by a non-chip-forming deformation simultaneously with the pressing or profile slotting of the inner toothing (16).
4. A hub member and shaft journal assembly according to claim 1, wherein the shaft toothing (19) is finished by non-chip-forming drawing, from the first step to a toothing run-out (20) of the shaft journal (12).
5. An assembly according to claim 1 comprising a securing ring (13) engaging an annular groove (23) towards the shaft end and an end face of the hub member (11).
This is a Continuation of U.S. patent application Ser. No. 10/304,435 filed on Nov. 26, 2002, issued on Apr. 14, 2005 as U.S. Pat. No. 6,877,350.
TECHNICAL FIELD The invention relates to a process of producing, by forming and machining, an inner joint part of a constant velocity universal ball joint in the form of a hub member which comprises a central through-aperture with inner toothing for receiving a shaft journal, and tracks for receiving torque transmitting balls on the outer circumference. The invention further relates to a process for producing a shaft journal for being inserted into the above-mentioned inner joint part. Furthermore, the invention is referred to a hub member and shaft journal assembly.
BACKGROUND OF THE INVENTION A connecting assembly between an inner joint part and an inserted driveshaft of the foregoing type is known from DE 42 40 131 C2. The inner toothing comprises a delimited axial length inside the through-aperture which continues on an untoothed portion. The end of the inner toothing serves as an axial stop for the shaft toothing of the inserted driveshaft. The inner toothing is produced in a blind hole in the inner joint part. The inner toothing can be produced only by introducing a toothing tool corresponding to the complete shaft toothing into the blind hole and by pressing the outer joint part on to the toothing tool through radial deformation. This requires a relatively high deformation rate involving high forces and a large amount of energy. An accurate position of the toothing run-out serving as a stop for the shaft toothing of the inserted shaft journal is also difficult to achieve.
SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a method of producing an inner joint part of the initially mentioned type, which permits production with a reduced amount of energy and a greater degree of accuracy. The present invention provides a method involving process stages wherein a blank with largely finish-formed ball tracks is produced by non-chip-forming deformation; and wherein, at the blank, outer surfaces and a smooth through-aperture are finish-turned. The method also provides that, during simultaneous working stages, the ball tracks are calibrated by non-chip-forming deformation, and the inner toothing in the through-aperture is produced by pressing or profile slotting in a non-chip-forming way by a mandrel.
Because the shaft toothing is produced on a continuous through-aperture, the radial deformation rate is reduced. The substantially simultaneously to that performed calibration of the ball tracks by radial mechanical deformation and radial mechanical holding results in that none of the two deformation processes has a disadvantageous effect on the dimensional accuracy of the respective other surfaces to be deformed, i.e. the production of the inner toothing does not lead to inaccurate track dimensions and the calibration of the ball tracks does not adversely affect the finish-dimensions of the inner toothing. In this way, subsequent machining can be avoided and a substantially higher degree of dimensional accuracy can be observed at the inner toothing and at the ball tracks. It is desirable that the inner joint part be held in the clamping device of the calibrating tool until the production of the inner toothing is complete.
FIGS. 5A�5D show four production stages of the inner joint part in accordance with the invention.
FIG. 7 shows an inner joint part with a calibrating tool and a drawing tool in an axial section along line 7�7 of FIG. 6.
DETAILED DESCRIPTION OF THE INVENTION FIG. 1 shows an assembly including an inner joint part 11, a shaft journal 12 and a securing ring 13 in which the below-mentioned individual characteristics can be identified. The inner joint part 11 comprises a through-aperture 14 and ball grooves 15 for receiving torque transmitting balls. The through-aperture comprises a portion with an inner toothing 16, a run-out 17 of the shaft toothing as a well a smooth bore 18 with a reduced diameter. Into the hub member 11 there is inserted the shaft 12 whose shaft toothing 19 complements the inner toothing and whose toothing run-out 20 is positioned at a distance from the inner joint part. A stop cone 22 in front of the toothing start 21 is axially supported on the toothing run-out 17 of the inner toothing 16 of the inner joint part 11 to prevent the shaft journal 12 from being introduced further, which would be possible bearing in mind the toothing length. The stop cone is followed by a cylindrical portion 24 with a reduced diameter which engages the smooth bore 18 of the inner joint part. Further towards the shaft end, the cylindrical portion 24 comprises an annular groove 23 accommodating the securing ring 13 which rests against the end face of the inner joint part 11 and thus prevents the shaft journal 12 from being pulled out of the inner joint part 11. The annular groove 23 is deep enough such that, when the circumferentially slotted securing ring 13 is completely radially compressed, it disappears in the annular groove. In this way, when the securing ring is pre-fitted, the shaft journal 12 can be slid into the inner joint part 11.
FIG. 2 shows these parts, i.e. the inner joint part 11, the shaft journal 12 and the securing ring 13 in the above-mentioned configuration prior to being assembled. When the shaft journal 12 is pressed into the inner joint part 11, the securing ring 13 is automatically compressed at the inner chamfer 25 of the through-aperture 14 for assembly purposes and, after the shaft journal 12 has been passed through as far as the annular groove 23 included through the inner joint part 11, the securing ring 13 springs back out of said annular groove 23. As explained in more detail below, the ball tracks on the inner joint part 11 can be calibrated by non-chip-forming deformation at the same time the inner toothing 16 in the through-aperture is produced by pressing or profile slotting in a non-chip-forming way by a mandrel. Also, the shaft toothing 19 from the first step to the toothing run-out 20 can be finished by being drawn through a die.
FIG. 3 shows the inner joint part as illustrated in FIG. 2 with the above-mentioned details. To that extent, reference is made to the above-mentioned description. As shown in this Figure, inner toothing 16 is slotted in a predetermined limited length as far as a tooting run-out 17 inside the through-aperture 14, with the through-aperture continuing in an untoothed portion 18.
FIGS. 5A�5D show the inner joint part 11 during different production stages. Illustration 5A shows a forged inner joint part wherein the tracks 15 are largely finish-formed and wherein countersunk portions 31, 32 are formed in from the two end faces 26, 27 between which an intermediate wall 33 has remained.
Patent CitationsCited PatentFiling datePublication dateApplicantTitleUS4416564 *Oct 28, 1981Nov 22, 1983ValeoHub and web assemblyUS5607358 *Mar 26, 1996Mar 4, 1997Gkn Automotive AgConnection between inner joint part and driveshaftUS5779551 *Apr 10, 1996Jul 14, 1998Gkn Automotive AgRotational fixed connectionUS6390925 *Oct 16, 2000May 21, 2002Delphi Technologies, Inc.Retainer assemblyUS6817950 *Nov 14, 2002Nov 16, 2004Gkn Driveline North America, Inc.High angle constant velocity joint* Cited by examinerReferenced byCiting PatentFiling datePublication dateApplicantTitleUS7721858 *Aug 31, 2006May 25, 2010Yamaha Hatsudoki Kabushiki KaishaClutch actuator, engine unit, and saddle type vehicleUS8128504 *Apr 12, 2007Mar 6, 2012Ntn CorporationConstant velocity universal jointUS8616779Nov 29, 2010Dec 31, 2013Honda Motor Co., Ltd.Shortened driveshaft stemUS20100317475 *Jun 12, 2009Dec 16, 2010Specialized Bicycle Components, Inc.Chain guide mount for a bicycle* Cited by examinerClassifications U.S. Classification464/182, 464/906, 403/359.6International ClassificationF16D3/20, F16D3/223, B21K1/76, F16D1/08, B23P11/00, B23P15/00Cooperative ClassificationY10S464/906, B23P11/00, B23P15/00, F16D2003/22313, B21K1/762, F16D2300/12, F16D3/223, B23P2700/11, F16D2250/00European ClassificationF16D3/223, B23P15/00, B23P11/00, B21K1/76CLegal EventsDateCodeEventDescriptionSep 19, 2014REMIMaintenance fee reminder mailedAug 2, 2010FPAYFee paymentYear of fee payment: 4Jul 8, 2005ASAssignmentOwner name: GKN AUTOMOTIVE GMBH, GERMANYFree format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:FUHRMANN, PETER;FRIELINGSDORF, HERBERT;HAINZ, VOLKER;ANDOTHERS;REEL/FRAME:016492/0087;SIGNING DATES FROM 20050426 TO 20050531RotateOriginal ImageGoogle Home - Sitemap - USPTO Bulk Downloads - Privacy Policy - Terms of Service - About Google Patents - Send FeedbackData provided by IFI CLAIMS Patent Services©2012 Google