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
  • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
  • F16C9/00—Bearings for crankshafts or connecting-rods; Attachment of connecting-rods
  • F16C9/02—Crankshaft bearings
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T29/00—Metal working
  • Y10T29/49—Method of mechanical manufacture
  • Y10T29/49636—Process for making bearing or component thereof

Definitions

• the invention relates according to the preamble of claim 1 to a split bearing arrangement in a housing, in particular crankshaft plain bearings for reciprocating engines, comprising a bearing block and a bearing cap made of materials of different hardness, the bearing cap arranged against the bearing block being positively connected to the bearing block by means of projections interacts securely against transverse loads.
• Such a bearing arrangement is known for example from DE-A 195 35 497, the projections provided on the bearing cover in the area of its clamping surface being produced by a rough mechanical finishing of this clamping surface. Preference is given here to a surface roughness generated by linear milling of the dividing surface or clamping surface parallel to the central axis of the bearing, the sharp-edged tips of which dig into the corresponding counter-clamping surface of the bearing bracket when the plain bearing is clamped together.
• a bearing cover produced in this way with protrusions in the clamping surface in no way reaches a one with a clamping surface produced by breaking separation given positive engagement, so that the bearing cover must be additionally secured against transverse loads
• the invention is therefore based on the object of demonstrating a bearing arrangement with an improved material clamping
• bearing cover formed from an iron material has cutting or pyramid-like projections formed above over its clamping surface, and that grooves are also provided in at least one of the corresponding clamping surfaces to accommodate the initial mounting of the bearing cover with force in the counter-clamping surface of the protrusion formed from a light metal bearing chair protrusions serve while impressing displaced material of the bearing chair
• the clamped bearing cover can advantageously absorb high lateral forces in a split bearing arrangement, as is particularly advantageous, for example, in a V-engine
• FIG. 1 is a perspective view of a bearing cover with the projections according to the invention, shown removed from an indicated storage chair, and
• Figure 2 shows a section of the projections in cross section
• a split bearing arrangement 1 in a machine housing 2 of a reciprocating piston machine (not shown in more detail) comprises, in particular for a crankshaft sliding bearing 3, a bearing block 4 and a bearing cover 5 made of materials of different hardness, the bearing cover 5 arranged against the bearing block 4 being braced via projections 6 interacts positively with the bearing bracket 4 secured against transverse loads
• the bearing cover 5 formed from an iron material has cutting-like projections 6 formed above via its clamping surfaces 7 and that grooves 8, 9 in the corresponding clamping surfaces 7, 10 of the bearing cover 5 and bearing bracket 4 are provided, which serve to receive the protrusions 6, when the bearing bracket 5 is first assembled, with force in the counter-clamping surfaces 10 of the bearing bracket 4 formed from a light metal, while impressing the displaced material of the bearing bracket 4
• the cutting distance of the projections 6 can be selected to be the same or different With the measure according to the invention, in an advantageous manner for secure material clamping during the initial assembly of the bearing cover 5 on the bearing bracket 4 via the projections 6 with corresponding depressions (not shown) which are embossed in the future assembly or disassembly of the precise location of the bearing cover 5 on the bearing bracket 4 serve
• the bearing cap 5 when the protrusions 6 are impressed into the counter-clamping surfaces 10 of the bearing block 4 formed from an aluminum alloy by means of sliding fits, such as the fit cheeks 11 of the bearing cap 5 the bearing chair 4 is guided relative to the bearing chair 4. This ensures accurate, play-free imaging of the depressions in the bearing chair 4 corresponding to the projections 6
• the projections 6 In order to compensate for the material displacements given when the projections 6 are impressed into the counter clamping surface 10 of the bearing block 4 without having an adverse effect on the rest of the flat contact of the clamping surfaces 7 with the counter clamping surfaces 10, the projections 6 have rounded grooves 8 adjacent to them, with the advantageous flow of the displaced Material the grooves 8 pass directly into the cutting edges 6 'and 6 "
• grooves 8 in the bearing cover 5 flat rounded grooves 9 can be arranged in the counter clamping surfaces 10 of the bearing seat 4 in areas of the protrusions of the bearing cover 5 to be pressed in. These grooves 9 are recessed from the counter clamping surfaces 10 in Matching to the respective cutting edge height H of the protrusions 6 is selected in order to achieve a sufficient recess for the material-clamping in the rectilinear and / or arc-shaped protrusion 6.
• both types of grooves 8, 9 can also be combined to ensure that a Material is not displaced into the areas of the flat clamping surfaces 7 and counter clamping surfaces 10
• the projections 6 on the bearing cover can either be machined or formed by eroding
• the bearing cap 5 can be made of a sintered material with screw through-bores, wherein in connection with the sinter production, circular-arc-shaped projections which protrude above the clamping surfaces 7 of the bearing cap 5 are formed in relation to the through bores
• the positive connection between the bearing cover 5 and the bearing bracket 4 made of materials of different hardness is preferably used in a machine housing 2 for a V-engine or internal combustion engine, in particular with a V-angle of 90 ° with known high lateral forces from the engine on the Bearing cover 5

Landscapes

• Engineering & Computer Science (AREA)
• General Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)

Priority Applications (4)

Applications Claiming Priority (2)

Publications (1)

Family

ID=7866120

Family Applications (1)

Country Status (6)

Families Citing this family (21)

Citations (5)

Family Cites Families (13)

• 1998
  • 1998-04-29 DE DE19819081A patent/DE19819081A1/de not_active Withdrawn
• 1999
  • 1999-04-12 ES ES99922093T patent/ES2213367T3/es not_active Expired - Lifetime
  • 1999-04-12 EP EP99922093A patent/EP1075605B1/de not_active Expired - Lifetime
  • 1999-04-12 US US09/674,286 patent/US6431759B1/en not_active Expired - Lifetime
  • 1999-04-12 WO PCT/EP1999/002443 patent/WO1999056028A1/de not_active Ceased
  • 1999-04-12 JP JP2000546153A patent/JP4288001B2/ja not_active Expired - Lifetime
  • 1999-04-12 DE DE59908372T patent/DE59908372D1/de not_active Expired - Lifetime

Patent Citations (5)

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