EP1827760A1 - Tete de cylindres de laminage - Google Patents

Tete de cylindres de laminage

Info

Publication number
EP1827760A1
EP1827760A1 EP04803534A EP04803534A EP1827760A1 EP 1827760 A1 EP1827760 A1 EP 1827760A1 EP 04803534 A EP04803534 A EP 04803534A EP 04803534 A EP04803534 A EP 04803534A EP 1827760 A1 EP1827760 A1 EP 1827760A1
Authority
EP
European Patent Office
Prior art keywords
deep rolling
rolling roller
deep
roller head
pin
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
Application number
EP04803534A
Other languages
German (de)
English (en)
Other versions
EP1827760B1 (fr
Inventor
Alfred Heimann
Hans-Willi Lingen
Hans Nolten
Frank Risters
Dieter Stuers
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hegenscheidt MFD GmbH and Co KG
Original Assignee
Hegenscheidt MFD GmbH and Co KG
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 Hegenscheidt MFD GmbH and Co KG filed Critical Hegenscheidt MFD GmbH and Co KG
Publication of EP1827760A1 publication Critical patent/EP1827760A1/fr
Application granted granted Critical
Publication of EP1827760B1 publication Critical patent/EP1827760B1/fr
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
    • B24B5/36—Single-purpose machines or devices
    • B24B5/42—Single-purpose machines or devices for grinding crankshafts or crankpins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B39/00—Burnishing machines or devices, i.e. requiring pressure members for compacting the surface zone; Accessories therefor
    • B24B39/04—Burnishing machines or devices, i.e. requiring pressure members for compacting the surface zone; Accessories therefor designed for working external surfaces of revolution

Definitions

  • the invention relates to a deep rolling roller head for deep rolling of radii or punctures, which laterally limit the bearing seats of main and crank pins of crankshafts for engines of motor vehicles.
  • the deep rolling roller head is provided in particular for deep rolling of so-called split pin crank pins of crankshafts.
  • the difficulty with split-pin crank pin is the deep rolling of the gusset section, which connects the two adjacent crank pin such a crankshaft with each other.
  • the deep rolling tool is supported over a portion of the circumference only on one side and on the subsequent section, namely the gusset section, on both sides.
  • the deep rolling roller head is not limited to the deep rolling of split-pin crankpin, but is also intended to standard roll and crankpins of crankshafts, which are bounded on either side by radii or punctures.
  • the object of the present invention to provide a deep rolling head, which is suitable for deep rolling of radii or punctures of the main or crank pin of all types of crankshafts.
  • the deep rolling of the gusset areas of split-pin crank pins should be possible, which can not be processed with conventional deep-rolling tools so far.
  • a deep rolling head in which two disc or annular disc-shaped and cylindrical fixed rollers of the same outer diameter and approximately the same axial width are provided, which are arranged parallel and at a mutual distance from each other in the housing of the deep rolling roller head to a common horizontal axis of rotation in Housing of the deep rolling roller head are rotatably mounted, and each have on their outer, opposite peripheral edges a circumferential, rounded and the outer diameter of the respective deep rolling roller by a predetermined amount magnifying projection, which also extends over a near-edge portion of the axial width of the deep rolling.
  • peripheral edges are intended to intervene in the deepening of punctures in the already existing recess of the groove, or einwalzen the deep rolling of radii of transitions in the radii a recess, wherein the deep rolling during each engagement or rolling with the one section of their axial width supported on the bearing seat.
  • a mutual support of two deep rolling roller heads is not provided in the present case. Due to the geometric conditions, two deep rolling roller heads can not work side by side for the adjacent and only connected via the gusset crank pin a split-pin crankshaft. For this purpose, an arrangement is advantageous in which two deep rolling roller heads are at an axial distance from each other. The deep rolling forces are absorbed in a known manner by support rollers, which lie opposite the deep rolling roller heads each. The deep rolling head plus the supporting roller head each form a deep rolling tool.
  • the axial width of the deep rolling roller head with its two disc-shaped deep rolling rolls corresponds at most to the width of a bearing seat from oil collar to oil collar.
  • a limited axial compliance of the two fixed rollers is advantageous for adapting to the manufacturing tolerances of the bearing seats.
  • An advantageous embodiment of the deep rolling roller head is obtained when one of two forming the deep rolling discs on one side has a projecting annular flange, while the other disc has on one side a projecting cylindrical pin and the annular flange of a disc and the pin of the other disc are each arranged concentrically to the common axis of rotation of the two fixed rollers.
  • engages in the assembled deep rolling roller head of the cylindrical pin of a deep rolling roller in the annular flange of the other deep rolling roller almost free of play.
  • the two fixed rollers can then be releasably connected to each other via screws or bolts or else permanently connected by rivets.
  • Festwalzrollenkopfes provides to form the two fixed rollers as annular discs, which are mounted on pins which project from the web of the housing of the deep rolling roller head.
  • the annular discs can be rotatably mounted on bearings and held by simple means known per se on the journal.
  • Each of the deep rolling rollers consists of a high-strength, in particular hardened material, as is known per se Use of conventional deep-rolling rollers is known.
  • the execution of the storage of the deep rolling rollers as plain bearings consists of the housing of the deep rolling roller head or the part of the housing in which the deep rolling rollers are mounted, made of bronze.
  • the two deep rolling rollers of a deep rolling roller head are hereinafter referred to as the outer roller, when they point to the main journal and as an inner deep rolling when they are located to the adjacent crank pin a split-pin crankshaft.
  • the deep rolling head can be used as follows: Case 1: Two outer and one inner slots are provided on the split-pin crank pin of a split-pin crankshaft, which cover the two adjacent bearing seats of the split-pin crankshaft. Pin pin each laterally limit.
  • the outer punctures are preliminarily rolled down by two co-rotating deep-rolling roller heads, as they are known from US Pat. No. 5,445,003 cited above.
  • the possible deep-rolling direction of the known deep-rolling roller heads of eg 35 ° oblique to the crankshaft axis has the advantage that a predetermined fatigue strength can be achieved.
  • the outer deep rolling roller of the deep rolling roller head only guide properties and performs no hard rolling in the gusset section.
  • the outer radius of curvature of the outer deep rolling roller does not touch the puncture in the gusset portion of the bearing seat.
  • the outer diameter of the outer deep rolling roller at least by the penetration depth of the inner deep rolling roller during deep rolling of the gusset and the corresponding Tolerances of the inner groove in the prefabrication of the crankshaft made smaller.
  • the outer deep-rolling roller lies in the outer recess and ensures that the deep-rolling roller head maintains its correct axial position. In this peripheral portion of the engagement of the outer deep rolling roller acting on the deep rolling roller head deep rolling force is reduced, while in the gusset section suitable for deep rolling deep rolling force of eg 10 kN is applied.
  • the outer diameter of the two fixed rollers are the same size in this case.
  • FIG. 1 is a perspective view of a portion of a split-pin crankshaft
  • Fig. 5 shows the situation before the rolling of radii on a split pin crank pin
  • FIG. 6 shows the situation as in FIG. 5 with two built-in deep-rolling roller heads
  • the split-pin crankshaft 1 of FIG. 1 has a split-pin crank pin 2 with the two individual crank pins 3 and 4 which are interconnected via a gusset 5, represented by the curved arrow. Laterally, the two crank pins 3 and 4 are each bounded by cheeks 7 and 8, wherein the transition between the crank pin 4 and the cheek 8 is formed as a recess 6. 1 serves to illustrate the conditions on a split-pin crankshaft. 1
  • two disc-shaped deep rolling rollers 11 and 12 are rotatably mounted about a common axis of rotation 13.
  • On the one side 14 carries the cylindrical disc of the deep rolling roller 12 has a projecting annular flange 15 which is concentric with the axis of rotation 13.
  • the annular flange 15 corresponds to the corresponding side 16 of the cylindrical disc of the deep rolling roller 11 a projecting cylindrical pin 17, which is also arranged concentrically to the common axis of rotation 13.
  • the assembled deep rolling head 10 as shown in the section of Fig. 3, engages the cylindrical pin 17 from the inside into the cylindrical flange 15 a. The intervention takes place with very little play.
  • Deep-rolling rollers 11 and 12 are finally connected by screws 18 firmly together.
  • a sliding bearing is provided between the fixed rollers 11 and 12 and the housing 9 of the deep rolling roller head 10.
  • the housing 9 is made of bronze and has a bore 19. In the bore 19 of the annular flange 15 engages with its outer side 35 a.
  • crank pin 4 is supported by support rollers 20, as is known per se.
  • Two support rollers 20 are combined in a support roller head.
  • the deep rolling roller head 10 and the support roller head together form a deep rolling device.
  • the projection 21 in Fig. 4 indicates the configuration of the peripheral edges 22 of the two fixed rollers 11 and 12 at.
  • the peripheral edges 22 of the two fixed rollers 11 and 12 are identical in their configuration.
  • Fig. 5 shows the situation of the deep rolling of two crank pins 3 and 4 by two deep rolling roller heads 10 and
  • the outer peripheral edge 22 of the deep rolling roller 12 is rounded and increases the outer diameter of each disc of the respective deep rolling roller 11, 12 by a predetermined amount
  • the peripheral edge 22 also extends over an edge-side section 25 of the axial width of each deep-rolling roller 11 and 12.
  • the total width of a deep rolling roller head 10 or 23 extends from the oil collar 26 of each crank pin 3 or 4 to the oil collar 31 of the gusset 5. As transitions between the crank pins 3 or 4 to the respective cheeks 27 on the oil collar 26 are each the outer recesses 29th intended. During the deep rolling penetrate the peripheral edges 22 of the fixed rollers 11 and 12 respectively in the outer recesses 29 of the crank pins 3 and 4 a.
  • the dimension 24 is reduced to the value 0, ie, on the predominant portion of its axial width, the deep rolling rollers 11 and 12 are supported on the bearing seats 36 of the respective crank pins 3 or 4, as can be seen in FIG.
  • the penetrating into the outer recesses 29 peripheral edges 22 of the outer fixed rollers 12 leave Einwalzept 32 in the outer recesses 29 to the respective cheeks 27 out.
  • Rolling 30 in the region of the gusset 5 are caused by the inner peripheral edges 33 and 34, corresponding to the peripheral edges 22.
  • FIG. 6 shows the situation of a deep-rolling machine (not shown) where two deep-rolling roller heads 10 and 23 process the outer grooves 29 of two adjacent crank pins 3 and 4 of a crankshaft 1.
  • the deep rolling rollers 11 and 12 are in relation to the main axis of rotation 35 of the crankshaft 1 in each case by 180 ° opposite each other.
  • Each deep rolling roller 11 and 12 are two support rollers 20 opposite, which are each arranged in a support roller head 37.
  • the peripheral portion 38 of the cross-hatched, because cut, shown gusset 5 is machined by the peripheral edge 33 of the inner deep rolling roller 11, while the peripheral portion 39 from the peripheral edge 34 of the inner Hard roller 11 is processed on the left part of Fig. 6.
  • FIG. 7 corresponds to a situation which arises when only one deep rolling roller head 10 or 23 is considered.
  • its axial width 37 of the deep rolling roller head 23 projects beyond the axial width 38 of the bearing seat 36 and its groove 28 of the split pin crank pin 3 and 4.
  • the recess 39 of the gusset 5 is 3 and 4 every time during the deep rolling of the split pin crank pins mitgewalzt.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
  • Rolling Contact Bearings (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Abstract

La présente invention concerne une tête de cylindres de laminage (10) destinée au laminage de rayons (28) ou d'entailles qui délimitent latéralement respectivement les sièges de palier de tourillons principaux et tourillons de levage (3, 4) de vilebrequins (1) destinés à des moteurs de véhicules automobiles. Selon l'invention, deux cylindres de laminage (11, 12) en forme de disque et cylindriques, de diamètre identique et de largeur approximativement identique, sont disposés parallèlement et à distance l'un à l'autre, dans le boîtier (9) de la tête de cylindres de laminage (10), et sont montés dans le boîtier (9) de la tête de cylindres de laminage (10), pour pouvoir tourner autour d'un axe de rotation horizontal commun (18). Les cylindres de laminage (11, 12) présentent respectivement sur leurs bords périphériques extérieurs (22) mutuellement opposés, une partie en saillie (21) arrondie périphérique qui augmente le diamètre du cylindre de laminage (11, 12) respectif d'une valeur prédéterminée (24), la largeur axiale du cylindre de laminage (11,12) s'étendant simultanément sur une section de la partie en saillie, proche du bord.
EP04803534A 2004-12-04 2004-12-04 Tete de cylindres de laminage Expired - Fee Related EP1827760B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2004/013824 WO2006058557A1 (fr) 2004-12-04 2004-12-04 Tete de cylindres de laminage

Publications (2)

Publication Number Publication Date
EP1827760A1 true EP1827760A1 (fr) 2007-09-05
EP1827760B1 EP1827760B1 (fr) 2008-10-15

Family

ID=34960029

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04803534A Expired - Fee Related EP1827760B1 (fr) 2004-12-04 2004-12-04 Tete de cylindres de laminage

Country Status (6)

Country Link
US (1) US20080209969A1 (fr)
EP (1) EP1827760B1 (fr)
CN (1) CN101072659A (fr)
CA (1) CA2590444A1 (fr)
DE (1) DE502004008300D1 (fr)
WO (1) WO2006058557A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202008007563U1 (de) * 2008-06-05 2008-10-02 Hegenscheidt-Mfd Gmbh & Co. Kg Festwalzrollenkopf
DE102009038817B4 (de) * 2009-08-25 2013-06-06 Emag Holding Gmbh Verfahren und Schleifmaschine zum Schleifen von zylindrischen und gekrümmten Konturen
CN102601573B (zh) * 2012-03-23 2014-01-08 南方泵业股份有限公司 一种板材件的滚压装置及其加工方法
CN103722342B (zh) * 2014-01-24 2015-10-14 宁波市精恒凯翔机械有限公司 一种球型滚压刀

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2114978A (en) * 1937-01-04 1938-04-19 Timken Roller Bearing Co Apparatus for cold rolling axle journals
US3648503A (en) * 1970-03-27 1972-03-14 Veeder Industries Inc Beading machine and method
JPS4964555A (fr) * 1972-10-25 1974-06-22
GB1475780A (en) * 1974-07-24 1977-06-10 Formflo Ltd Rolling operations
US5445003A (en) * 1994-01-03 1995-08-29 Hegenscheidt Corporation Engine crank pin rolling equipment, rolling tool and method of rolling adjacent and offset crank pins
WO1998051432A1 (fr) * 1997-05-16 1998-11-19 Hegenscheidt-Mfd Corporation Outil de support pour formage de conges de vilebrequins par ecrasement profond au rouleau
US6434992B1 (en) * 2001-02-05 2002-08-20 Hegenscheidt-Mfd Corporation Fillet rolling support roller

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2006058557A1 *

Also Published As

Publication number Publication date
DE502004008300D1 (de) 2008-11-27
CN101072659A (zh) 2007-11-14
EP1827760B1 (fr) 2008-10-15
WO2006058557A1 (fr) 2006-06-08
CA2590444A1 (fr) 2006-06-08
US20080209969A1 (en) 2008-09-04

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