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
  • 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
• • 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

Definitions

• the invention relates to a deep rolling device of a deep rolling machine for crankshafts, with two opposite arms, one arm of which carries a deep rolling roller head and the other arm a supporting roller head, the supporting roller head being provided with two axially parallel supporting rollers and the deep rolling roller head being provided with at least one deep rolling roller, the axis of rotation lies in a plane with the axis of rotation of the crankshaft and includes with it an 'angle, with a drive device which generates the closing and opening movement of the deep rolling unit and the deep rolling force.
• a deep rolling device of the type mentioned is known for example from DE 299 10 214 Ul and DE 202 00 926 Ul.
• two deep rolling rollers are arranged in pairs in a deep rolling roller head at a mutual distance from each other, which penetrate under the effect of the deep rolling force into the radii or recesses between the bearing journals and the cheeks of the crankshaft while the crankshaft rotates about its axis of rotation.
• the axes of rotation of the two deep rolling rollers each run in one plane to the axis of rotation of the crankshaft or have a slight offset with respect to the axis of rotation of the crankshaft.
• the deep rolling rollers are inclined outwards and in this arrangement form an acute angle with the axis of rotation of the crankshaft.
• the two deep rolling rollers are supported within the deep rolling roller head on a guide roller which is mounted in the deep rolling roller head in such a way that it cannot take any forces in the longitudinal direction of the crankshaft.
• Support roller heads can develop forces in the axial direction if, for example, the axis of one of the two support rollers of a support roller head is not strictly parallel to the axis of rotation of the crankshaft.
• this object is achieved in that in an embodiment of the deep-rolling device in scissor-type construction, an axial guide roller is provided on the deep-rolling roller head, which is arranged centrally to the deep-rolling roller head, the axis of rotation of which is perpendicular to the axis of rotation of the crankshaft and has a diameter which is slightly smaller is the mutual distance between two oil bundles of a main or pin bearing journal of the crankshaft.
• an axial guide roller is provided on the yoke, which is arranged in the center of the fixed roller head, the axis of rotation of which The axis of rotation of the crankshaft is vertical and has a diameter that is slightly smaller than the mutual distance between two oil bundles of a main or pin bearing journal of the crankshaft.
• the axis of rotation of the axial guide roller with a plane which contains the axis of rotation of the crankshaft and to the common plane of the axes of rotation of the has a distance between the two support rollers and is parallel, encloses an acute angle.
• an axial guide roller is fixedly arranged on the deep-rolling roller head or on the yoke, which limits axial movement of the deep-rolling device in the longitudinal direction of the axis of rotation of the crankshaft and introduces forces which act in the same direction into the oil collar of the crankshaft.
• the arrangement of the axial guide roller at an acute angle does not affect the free space inside the deep rolling machine is necessary for axial displacement of the crankshaft. Rather, the arrangement leaves a space open at the top, which is sufficiently large to serve as an access space for a probe, which measures the concentricity of the crankshaft before and after deep rolling in a known manner.
• a pair of axial guide rollers is also provided, the axes of rotation of which run parallel to one another and are spaced apart. But it is also possible that the axes of rotation of a pair of axial guide rollers have an offset, if they are viewed from an angle perpendicular to the axis of rotation of the crankshaft.
• sliding bodies can be provided.
• Fig. 1 shows a section through a deep rolling machine with a partial view of a
• crankshaft transport device a deep rolling device assuming its pre-closed position with respect to an inserted crankshaft
• FIG. 2 shows a section through the deep-rolling machine and a section through a main bearing journal of the crankshaft, the deep-rolling device being in its closed position.
• 4 shows the axial guide roller on a deep rolling device which is designed in a scissor-type construction
• 5 shows the cross section through a deep rolling roller head
• a deep rolling machine 1 is with a
• crankshaft transport device 2 inserted crankshaft 3 is used.
• the drive device generates the rotary movement of the crankshaft 3 about its axis of rotation 4 during the deep rolling of the main 6 and pin bearing journals 5.
• the axis of rotation 4 is thus in the axis of rotation of the drive device.
• the present exemplary embodiment is based on the deep rolling of a pin bearing journal 5 of the crankshaft 3, since this is sufficient to explain the subject matter of the invention.
• the pin bearing 5 is assigned a deep rolling device 8, which is provided in a scissor-type construction with two arms 9, 10, a scissor pivot point 11, a drive device 12, a deep rolling roller head 13 and a support roller head 14.
• the drive device 12 has an adjusting cylinder 15 and a power device 16.
• the adjusting cylinder 15 generates the locking and
• the deep-rolling device 8 is pivotable about an axis 18 via a pivot point 17 Angle lever 19 articulated.
• the angle lever 19 can be pivoted with the aid of a piston-cylinder unit 20.
• the deep-rolling machine 1 is designed such that when the deep-rolling device 8 is closed, the two axially parallel support rollers 21, 22 of the support roller head 14 and then the two deep-rolling rollers 23, 24 of the deep-rolling roller head 13 come to rest on the pin bearing journal 5.
• the support roller head 14 carries out a pivoting movement 35 around the articulation point 17 and the deep rolling roller head 13 carries out a pivoting movement 36 around the pivot point 11.
• the deep rolling roller head 13 being arranged transversely and centrally to the supporting rollers 21, 22 Axial guide roller 27, whose diameter 28 is greater than the width 29 of the deep rolling roller head 13 and slightly smaller than the mutual distance 29a of the oil collars 25, 26 of the pin bearing 5.
• the axial guide roller 27 is cylindrical on the outside. In the closed position of the deep rolling device 8 (FIG. 2), approximately 0.25 mm play is individually provided for the two free spaces 30, 31 between the oil collars 25, 26 and the axial guide roller 27.
• the axes of rotation 32 and 33 of the two support rollers 21 and 22 lie in a common plane 34, which is a plane 38 which represents the axis of rotation 4 of the crankshaft 3 contains, has a distance s.
• the axis of rotation 7 of the axial guide roller 27 includes an acute angle 37 with the plane 38, which contains the axis of rotation 4 of the crankshaft 3 and is at a distance s from the common plane 34 of the axes of rotation 32 and 33 of the two support rollers 21 and 22 and is parallel.
• the deep rolling device shown in FIG. 4 corresponds to the fixed rolling device as shown in FIGS. 1 and 2.
• FIG. 1 Another possible embodiment of a deep rolling device is shown in FIG. Instead of scissor arms as the basis for the embodiment in FIGS. 1 to 4, a deep-rolling device 49 has a compact design. The two arms 43 and 44 are then connected to one another via a yoke 45. A lever mechanism 46 with two joints 47 and 48 and a corresponding drive (not shown) ensure that the deep-rolling device 49 is pivoted into the working position.
• the support roller head 50 is brought into an open and closed position by a drive 51 with respect to the crankshaft 3.
• An axial guide roller 52 projects out of the yoke 45 in the direction of the axis of rotation 4 of the crankshaft 3.
• the axial guide roller 52 is rotatably mounted in a base 53 on the yoke 45.
• the bearing of the axial guide roller 52 in the base 53 can either be rigid, as shown in FIG. 8, but it can also have its own drive (not shown) which, similar to the drive 51, moves the axial guide roller 52 into a closed and open position is suitable to be transferred.
• sliding bodies can be provided which, without being able to rotate themselves, into the intermediate space 29a between the
• two oil bundles 25 and 26 can be stirred.
• pairs of axial guide rollers can be provided, the diameter 28 of which is considerably smaller than that shown in FIG. 3, but the outer circumferences of which bridge the mutual distance 29a of the oil collars 25 and 26.
• sliding bodies (not shown) are provided, as are known per se from DE 202 00 926 U1.

Landscapes

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

Priority Applications (3)

Applications Claiming Priority (2)

Publications (1)

Family

ID=34716266

Family Applications (1)

Country Status (5)

Cited By (4)

Citations (1)

Family Cites Families (4)

• 2003
  • 2003-12-29 DE DE2003161738 patent/DE10361738B3/de not_active Expired - Fee Related
• 2004
  • 2004-12-21 DE DE502004010369T patent/DE502004010369D1/de active Active
  • 2004-12-21 EP EP04804123A patent/EP1699591B1/de not_active Not-in-force
  • 2004-12-21 WO PCT/EP2004/014525 patent/WO2005063438A1/de not_active Application Discontinuation
  • 2004-12-21 CN CNA200480039333XA patent/CN1902028A/zh active Pending
  • 2004-12-21 JP JP2006546030A patent/JP4499745B2/ja not_active Expired - Fee Related

Patent Citations (1)

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