WO2016060055A1 - ローラバニッシュ加工装置 - Google Patents

ローラバニッシュ加工装置 Download PDF

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Publication number
WO2016060055A1
WO2016060055A1 PCT/JP2015/078585 JP2015078585W WO2016060055A1 WO 2016060055 A1 WO2016060055 A1 WO 2016060055A1 JP 2015078585 W JP2015078585 W JP 2015078585W WO 2016060055 A1 WO2016060055 A1 WO 2016060055A1
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WO
WIPO (PCT)
Prior art keywords
crankshaft
rollers
roller
burnish
shaft portion
Prior art date
Application number
PCT/JP2015/078585
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
成瀬裕行
永井浩行
徳市広樹
Original Assignee
本田技研工業株式会社
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 本田技研工業株式会社 filed Critical 本田技研工業株式会社
Publication of WO2016060055A1 publication Critical patent/WO2016060055A1/ja

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    • 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 present invention relates to a roller burnishing apparatus that burnishes the outer peripheral surface of a shaft portion of a crankshaft.
  • Vanishing is performed by, for example, pressing a processing tool (diamond tip) on the surface of a metal workpiece in a point-contacted manner and moving it relatively, and in a relatively short time without generating chips.
  • a processing tool diamond tip
  • the processing tool may drop into the oil supply hole opened in the outer peripheral surface, or the processing tool and the balance weight may interfere with each other.
  • Japanese Patent Laid-Open No. 6-190718 discloses a technical idea of avoiding balance weight interference by transmitting a pressing force of a hydraulic cylinder to a burnish roller via one backup roller.
  • one burnish roller 200 is pressed against the outer peripheral surface of the shaft portion of the crankshaft 202 in a line-contact state, so that the burnish roller 200 is pressed against the shaft portion of the crankshaft 202.
  • It may be slippery in the circumferential direction with respect to the outer peripheral surface, and the pressing force may not be efficiently applied to the outer peripheral surface of the shaft portion of the crankshaft 202. Therefore, the processing efficiency of the outer peripheral surface of the shaft portion of the crankshaft 202 may be reduced.
  • the present invention has been made in consideration of such problems, and a roller burnish processing apparatus capable of increasing the processing efficiency of the outer peripheral surface of the shaft portion of the crankshaft with a simple configuration while avoiding balance weight interference.
  • the purpose is to provide.
  • a roller burnishing apparatus is a roller burnishing apparatus that burns the outer peripheral surface of a shaft portion of a crankshaft, and extends along the axial direction of the crankshaft.
  • a pair of burnish rollers having an outer diameter smaller than the outer diameter of the shaft portion of the crankshaft, support means for rotatably supporting the pair of burnish rollers, and each vanish roller facing the shaft portion of the crankshaft
  • a pressing mechanism that presses and presses, and the pressing mechanism has a first backup roller that rotates in contact with the outer peripheral surface of each of the burnish rollers, and the pair of burnish rollers are provided on the shaft portion of the crankshaft.
  • the pair of burnish rollers arranged side by side along the circumferential direction of the shaft portion of the crankshaft are brought into contact with the outer peripheral surface of the shaft portion of the crankshaft. It is possible to make it difficult to slip in the circumferential direction with respect to the outer peripheral surface of the. Accordingly, a predetermined pressing force can be efficiently applied from the pressing mechanism to the outer peripheral surface of the shaft portion of the crankshaft via each burnish roller, so that the processing efficiency of the shaft portion can be increased with a simple configuration. it can. In addition, since the pressing force is transmitted to each burnish roller via the first backup roller, interference between the balance weight and the pressing mechanism can be avoided.
  • the pair of burnish rollers have the same outer diameter, and are equidistant from a line segment connecting the axis of the crankshaft shaft and the rotation axis of the first backup roller.
  • the positions may be spaced apart from each other.
  • substantially the same pressing force can be transmitted to each burnish roller via the first backup roller, and the pair of burnish rollers are circumferentially arranged with respect to the outer peripheral surface of the shaft portion of the crankshaft. It is possible to make it more difficult to slip.
  • the pressing mechanism may include a second backup roller that rotates in contact with an outer peripheral surface of the first backup roller.
  • the support means is disposed so as to sandwich the pair of burnish rollers, and rotates in contact with the outer peripheral surface of the burnish roller. And a retainer.
  • the outer peripheral surface of the burnish roller can be prevented from coming into contact with the retainer and being damaged, so that high machining accuracy can be maintained.
  • the outer diameter of each of the burnish rollers may be set to 1/10 or more and 1/5 or less of the outer diameter of the shaft portion of the crankshaft.
  • the pressing force can be more efficiently applied to the outer peripheral surface of the shaft portion of the crankshaft while suppressing breakage of the burnish roller.
  • a pair of burnish rollers arranged side by side along the circumferential direction of the shaft portion of the crankshaft is brought into contact with the outer peripheral surface of the shaft portion of the crankshaft, and is pressed against each burnish roller via the first backup roller. Since the pressure is transmitted, the processing efficiency of the outer peripheral surface of the shaft portion of the crankshaft can be increased with a simple configuration while avoiding the interference of the balance weight.
  • FIG. 2 is a longitudinal sectional view taken along line II-II in FIG.
  • FIG. 3 is a longitudinal sectional view taken along line III-III in FIG. 2.
  • It is a top view of the support part shown in FIG. It is explanatory drawing which shows the positional relationship of a pair of burnish roller. It is a top view of the support part concerning a modification.
  • FIG. 7A is an explanatory view of a roller burnishing apparatus according to a modified example including two receiving rollers
  • FIG. 7B is an explanatory view of a roller burnishing apparatus according to a modified example including three receiving rollers. It is explanatory drawing of the roller burnishing apparatus which concerns on the modification provided with two process part main bodies. It is explanatory drawing of the burnishing which concerns on a prior art.
  • a roller burnishing apparatus 10 burns (shakes) a shaft portion 102 (crank journal 104 and crank pin 106) of a crankshaft 100.
  • crankshaft 100 as a workpiece will be described.
  • the crankshaft 100 is used as a component part of an engine such as an automobile, for example, and a plurality of crank journals 104 pivotally supported by a cylinder block (not shown), a plurality of crankpins 106 to which a connecting rod of a piston (not shown) is attached, A plurality of crank arms 108 for connecting the crank journal 104 and the crank pin 106 and a plurality of balance weights 110 provided on the crank arm 108 are provided.
  • the axis Ax1 of the crank journal 104 and the axis Ax2 of the crank pin 106 extend in parallel at positions that do not overlap each other. As shown in FIG. 3, an arcuate fillet portion 112 is formed between the crank journal 104 and the crank arm 108 (boundary portion) and between the crank pin 106 and the crank arm 108 (boundary portion). ing. An oil supply hole 114 is opened on the outer peripheral surfaces of the crank journal 104 and the crankpin 106.
  • the roller burnishing apparatus 10 includes a processing unit main body 12 attached to a moving mechanism (not shown).
  • the processing unit main body 12 includes a pair of burnish rollers 14 and 16 configured in a columnar shape or a cylindrical shape, a pressing mechanism 18 that presses the burnish rollers 14 and 16 toward the shaft portion 102 of the crankshaft 100, and a burnish roller. And a support portion (support means) 20 for supporting the members 14 and 16.
  • the pair of burnish rollers 14 and 16 are juxtaposed along the circumferential direction of the shaft portion 102 of the crankshaft 100 in a state of extending along the axial direction (arrow X direction) of the crankshaft 100.
  • the overall lengths of the burnishing rollers 14 and 16 are set slightly longer than the width of the shaft portion 102 that performs burnishing on the crankshaft 100. Thereby, the outer peripheral surface of the axial part 102 of the crankshaft 100 can be burnished efficiently.
  • the pair of burnish rollers 14 and 16 have the same outer diameter.
  • the outer diameters of the burnish rollers 14 and 16 are set to be smaller than the outer diameter of the shaft portion 102 where the burnishing process is performed on the crankshaft 100.
  • the outer diameter of each of the burnish rollers 14 and 16 is preferably set to a size of 1/10 or more and 1/5 or less of the outer diameter of the shaft portion 102.
  • the burnish rollers 14 and 16 are easily damaged, and the outer diameter of the burnish rollers 14 and 16 is smaller than the outer diameter of the shaft portion 102. This is because if the diameter is larger than 1/5 of the diameter, the pressing force cannot be efficiently increased on the outer peripheral surface of the shaft portion 102.
  • the pressing mechanism 18 includes first to third backup rollers 22, 24, 26 that rotate as the pair of burnish rollers 14, 16 rotate, and first to third backup rollers 22, 24, 26 that pivotally support the first to third backup rollers 22, 24, 26.
  • 1st to 3rd support shafts 28, 30, 32 a holder 34 for holding the 1st to 3rd support shafts 28, 30, 32, a plurality of disc springs (biasing means) 36 for pressing the holder 34, and a plurality of And a spring support portion 38 for supporting the disc spring 36.
  • the first backup roller 22 is in contact with the outer peripheral surfaces of the pair of burnish rollers 14 and 16 while being supported by the first support shaft 28.
  • the second backup roller 24 is in contact with the outer peripheral surface of the first backup roller 22 while being supported by the second support shaft 30.
  • the third backup roller 26 is in contact with the second backup roller 24 while being supported by the third support shaft 32.
  • the first to third support shafts 28, 30, and 32 extend along the axial direction of the crankshaft 100.
  • the axis lines Ax3, Ax4, Ax5 of the first to third support shafts 28, 30, 32 extend in parallel to the axis lines Ax1, Ax2 of the shaft portion 102 of the crankshaft 100.
  • the holder 34 includes a pair of cover portions 40, 42 disposed so as to sandwich the first to third backup rollers 22, 24, 26 from the axial direction of the crankshaft 100, and a plurality of fastening portions for fastening the cover portions 40, 42. It includes a bolt 44 and a connecting portion 46 that is provided at an end of each cover portion 40, 42 opposite to the side where the burnish rollers 14, 16 are located and connects the cover portions 40, 42.
  • Each of the cover portions 40 and 42 has a thin tip at the tip side close to the burnish rollers 14 and 16 and a thick base at the base end near the connecting portion 46.
  • the cover portions 40 and 42 each have a thin portion covering the first backup roller 22 and the second backup roller 24 and a thick portion covering the third backup roller 26.
  • the number and size of the disc springs 36 are set according to the surface roughness required for the outer peripheral surface of the shaft portion 102 of the crankshaft 100.
  • a plurality of disc springs 36 are used as urging means for pressing the holder 34 in order to reduce the size of the pressing mechanism 18, but the urging means may be a coil spring or the like.
  • the spring support portion 38 is a block-like member in which an arrangement hole 48 in which a plurality of disc springs 36 are arranged is formed.
  • the spring support portion 38 is provided on the bottom surface of the arrangement hole 48 and is arranged on each of the disc springs 36. It has the support
  • the support portion 20 includes a pair of retainers 54 and 56 attached to the cover portions 40 and 42 by a plurality of bolts 52, and a pair of guide rollers 58 pivotally supported by the retainers 54 and 56. 60.
  • the retainers 54 and 56 are formed in a substantially U shape in plan view, and the burnish rollers 14 and 16 and the guide rollers 58 and 60 are arranged in the internal space of the U shape.
  • the pair of retainers 54 and 56 are arranged in parallel at a predetermined distance from each other in a direction orthogonal to the axial direction of the burnish rollers 14 and 16 so that the U-shaped openings face each other.
  • the spacing between the pair of retainers 54 and 56 can be set arbitrarily, but is set smaller than the outer diameter of the burnish rollers 14 and 16, for example.
  • the pair of guide rollers 58 and 60 are disposed so as to sandwich the pair of burnish rollers 14 and 16.
  • Each of the guide rollers 58 and 60 extends along the axial direction of the burnish rollers 14 and 16, and both end portions thereof are formed with a small diameter and the central portion thereof is formed with a large diameter.
  • the outer peripheral surfaces of the large diameter portions of the guide rollers 58 and 60 are rotated in contact with the outer peripheral surfaces of the burnish rollers 14 and 16.
  • the outer diameter of the large diameter part of the guide rollers 58 and 60 can be set arbitrarily, it can be set, for example, substantially the same as the outer diameter of the burnish rollers 14 and 16. Accordingly, the pair of guide rollers 58 and 60 can be reliably supported while avoiding contact with the crankshaft 100 and the first backup roller 22.
  • the burnishing rollers 14 and 16 are supported so that their outer peripheral surfaces can rotate without contacting the retainers 54 and 56. Therefore, since the outer peripheral surfaces of the burnish rollers 14 and 16 are prevented from coming into contact with the retainers 54 and 56 and damaged, high machining accuracy is maintained.
  • the pair of burnish rollers 14 and 16 includes the axis lines Ax1 and Ax2 of the shaft portion 102 of the crankshaft 100 and the axis line Ax3 of the first support shaft 28 (the rotation axis of the first backup roller 22). Are spaced apart from each other at equidistant positions d from the line segment L.
  • the roller burnishing apparatus 10 is basically configured as described above. Next, the operation and effect of the apparatus will be described.
  • the crankshaft 100 is mounted on a rotary drive device (not shown) and rotated.
  • the crankshaft 100 is rotated so that the axis Ax1 of the crank journal 104 becomes the rotation axis
  • the crankshaft 100 is rotated so that the axis Ax2 of the pin 106 becomes the rotation axis. It is assumed that the pair of burnish rollers 14 and 16 of the roller burnishing apparatus 10 are waiting in the vicinity of the shaft portion 102 of the crankshaft 100 that performs burnishing.
  • the roller burnishing apparatus 10 brings the pressing mechanism 18 close to the shaft portion 102 of the crankshaft 100 by a moving mechanism (not shown).
  • the burnish rollers 14 and 16 are brought into line contact with the outer peripheral surface of the shaft portion 102.
  • the pair of burnish rollers 14 and 16 are juxtaposed along the circumferential direction of the shaft portion 102 of the crankshaft 100, so that it is difficult to slide in the circumferential direction with respect to the outer peripheral surface of the shaft portion 102.
  • the pair of burnish rollers 14 and 16 stably makes line contact with the outer peripheral surface of the shaft portion 102 of the crankshaft 100.
  • the pressing force of the plurality of disc springs 36 is transmitted approximately equally to the pair of burnish rollers 14 and 16 via the first to third backup rollers 22, 24 and 26, so that each of the burnish rollers 14 and 16 has a predetermined value.
  • the outer peripheral surface of the shaft portion 102 is rolled while being pressed against the outer peripheral surface of the shaft portion 102 of the crankshaft 100 by a pressing force (Hertz surface pressure).
  • the pressing force of the disc spring 36 is transmitted to the burnishing rollers 14 and 16 by the first to third backup rollers 22, 24 and 26, so that the pressing mechanism 18 and the balance weight 110 do not interfere with each other. .
  • Each of the burnish rollers 14 and 16 is allowed to rotate by the first to third backup rollers 22, 24 and 26 and the pair of guide rollers 58 and 60, so that the outer peripheral surface of the shaft portion 102 of the crankshaft 100 is provided. It will roll smoothly. As a result, the outer peripheral surface of the shaft portion 102 of the crankshaft 100 is plastically deformed (burnished) and smoothed.
  • the pair of burnish rollers 14 and 16 arranged in parallel along the circumferential direction of the shaft portion 102 of the crankshaft 100 are in line contact with the outer peripheral surface of the shaft portion 102 of the crankshaft 100.
  • Each of the burnish rollers 14 and 16 can be made difficult to slide in the circumferential direction with respect to the outer peripheral surface of the shaft portion 102. Accordingly, a predetermined pressing force can be efficiently applied from the pressing mechanism 18 to the outer peripheral surface of the shaft portion 102 of the crankshaft 100 via the burnish rollers 14 and 16, so that the shaft portion 102 can be configured with a simple configuration. The processing efficiency can be improved.
  • the outer diameters of the burnish rollers 14 and 16 are made smaller than the outer diameter of the shaft portion 102 of the crankshaft 100, it is possible to efficiently apply a pressing force to the outer peripheral surface of the shaft portion 102. it can. Further, since the pressing force can be transmitted to the burnishing rollers 14 and 16 via the first backup roller 22, a predetermined pressing force is applied to each of the burnishing rollers 14 and 16 while allowing the rotation of the burnishing rollers 14 and 16. Pressure can be applied. Furthermore, since the first to third backup rollers 22, 24, and 26 are used, it is possible to avoid interference between the balance weight 110 and the pressing mechanism 18 while reducing the size of the pressing mechanism 18.
  • a pair of burnish rollers 14 and 16 having the same outer diameter are connected to the axis of the shaft portion 102 of the crankshaft 100 (the axis Ax1 of the crank journal 104 or the axis Ax2 of the crankpin 106) and the first support shaft 28.
  • the pair of guide rollers 58 and 60 arranged so as to sandwich the pair of burnish rollers 14 and 16 are rotated in contact with the outer peripheral surfaces of the burnish rollers 14 and 16. Therefore, it is possible to prevent the outer peripheral surfaces (rolling surfaces) of the burnish rollers 14 and 16 from coming into contact with the retainers 54 and 56 so that high machining accuracy can be maintained.
  • each burnish roller 14, 16 is set to 1/10 or more and 1/5 or less of the outer diameter of the shaft portion 102 of the crankshaft 100, the outer diameter of the shaft portion 102 is pushed. Pressure can be applied efficiently. Therefore, the processing efficiency of the outer peripheral surface of the shaft portion 102 of the crankshaft 100 can be further improved.
  • the present embodiment is not limited to the above-described configuration and burnishing method.
  • the crankshaft 100 is rotated so that the axis line Ax1 of the crank journal 104 becomes the rotation axis, and the pair of burnish rollers 14 and 16 are pressed against the outer peripheral surface of the crankpin 106.
  • the burnishing may be performed by rotating the pressing mechanism 18 around the axis of the crank journal 104 while rotating the pressing mechanism 18 around the axis of the crank journal 104.
  • the crankshaft 100 is rotated so that the axis Ax1 of the crank journal 104 becomes the rotation axis, and the pair of burnish rollers 14 and 16 are pressed against the outer peripheral surface of the crank journal 104.
  • the burnishing may be performed by rotating the pressing mechanism 18 around the axis of the crank journal 104 in the state where it is in this state.
  • crankshaft 100 is fixed without rotating, and the pressing mechanism 18 is arranged around the axis of the shaft portion 102 in a state where the pair of burnish rollers 14 and 16 are pressed against the outer peripheral surface of the shaft portion 102 of the crankshaft 100. Vanishing may be performed by rotating.
  • the roller burnishing apparatus 10 may have a support portion 20a according to a modification shown in FIG.
  • the burnish rollers 14 and 16 are pivotally supported with respect to the retainers 54 and 56, and the pair of guide rollers 58 and 60 are omitted. Even in such a configuration, an appropriate pressing force is applied to the outer peripheral surface of the shaft portion 102 of the crankshaft 100 while preventing the outer peripheral surfaces of the burnish rollers 14 and 16 from coming into contact with the retainers 54 and 56 and being damaged.
  • the burnish rollers 14 and 16 can be rolled.
  • the roller burnishing apparatus 10 may include a pair of receiving rollers 62 that support the shaft portion 102 of the crankshaft 100 from the side opposite to the burnish rollers 14 and 16.
  • the pressing force Hertz surface pressure
  • the processing efficiency of the axial part 102 of the crankshaft 100 can be improved further.
  • the roller burnishing apparatus 10 may include a large-diameter receiving roller 64 and a pair of small-diameter receiving rollers 66 that rotate in contact with the outer peripheral surface of the receiving roller 64. Good. In this case, interference between the balance weight 110 and the receiving rollers 64 and 66 can be preferably avoided.
  • the roller burnishing apparatus 10 may include a plurality (two in the illustrated example) of processing unit main bodies 12.
  • the plurality of processed portion main bodies 12 are disposed so as to face each other with the shaft portion 102 of the crankshaft 100 interposed therebetween. Thereby, the processing efficiency of the axial part 102 of the crankshaft 100 can further be improved.
  • roller burnishing apparatus is not limited to the above-described embodiment, and various configurations can be adopted without departing from the gist of the present invention.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
PCT/JP2015/078585 2014-10-16 2015-10-08 ローラバニッシュ加工装置 WO2016060055A1 (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2014-211577 2014-10-16
JP2014211577A JP6267623B2 (ja) 2014-10-16 2014-10-16 ローラバニッシュ加工装置

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WO2016060055A1 true WO2016060055A1 (ja) 2016-04-21

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ID=55746601

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Application Number Title Priority Date Filing Date
PCT/JP2015/078585 WO2016060055A1 (ja) 2014-10-16 2015-10-08 ローラバニッシュ加工装置

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JP (1) JP6267623B2 (enrdf_load_stackoverflow)
WO (1) WO2016060055A1 (enrdf_load_stackoverflow)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB901246A (en) * 1955-04-28 1962-07-18 Foote Burt Co Burnishing head
US4296620A (en) * 1978-10-16 1981-10-27 W. Hegenscheidt Gesellschaft Mbh Smoothing rolling mill
JPS59153036U (ja) * 1983-03-30 1984-10-13 豊田工機株式会社 ロ−ラ掛け装置
JPH0310766A (ja) * 1989-06-08 1991-01-18 Nissan Motor Co Ltd フィレットロール掛け装置

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2863921B1 (fr) * 2003-12-18 2007-01-12 Renault Sas Outil de galetage

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB901246A (en) * 1955-04-28 1962-07-18 Foote Burt Co Burnishing head
US4296620A (en) * 1978-10-16 1981-10-27 W. Hegenscheidt Gesellschaft Mbh Smoothing rolling mill
JPS59153036U (ja) * 1983-03-30 1984-10-13 豊田工機株式会社 ロ−ラ掛け装置
JPH0310766A (ja) * 1989-06-08 1991-01-18 Nissan Motor Co Ltd フィレットロール掛け装置

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JP6267623B2 (ja) 2018-01-24
JP2016078166A (ja) 2016-05-16

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