METALLIC ELEMENT FOR CONTINUOUSLY VARIABLE TRANSMISSION, AND MANUFACTURING METHOD OF METALLIC ELEMENT FOR CONTINUOUSLY VARIABLE TRANSMISSION

• Main Author: YAGASAKI TORU
• Format: Patent
• Language: English; Japanese
• Published: 21.01.2021
• Subjects: BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVINGPURPOSES; BLASTING; CHAINS; ENGINEERING ELEMENTS AND UNITS; FITTINGS PREDOMINANTLY USED THEREFOR; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; MECHANICAL ENGINEERING; MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL; PERFORMING OPERATIONS; PUNCHING METAL; THERMAL INSULATION IN GENERAL; TRANSPORTING; WEAPONS; WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS ORPROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL

To improve lubricant holding performance of a punched surface of a metallic element for a belt-type continuously variable transmission.SOLUTION: In a metallic element 23 for a continuously variable transmission, as a plurality of crest parts 31a and groove parts 31b extending in a punching direction are alternately formed on a punched surface 31 punched by a metal mold 41, a lubricant can be held in the groove parts 31b and lubrication performance of the punched surface 31 can be secured. As the plurality of grooves 31c extending in a direction orthogonal to the punching direction is formed on top faces of the crest parts 31a, and a depth of the grooves 31c is shallower than a depth of the groove parts 31b, lubrication performance of the punched surface 31 can be further improved as the lubricant is held even in grooves 23c orthogonal to a moving direction of the metallic element 23, in addition to the groove parts 31b of the metallic element 23, and as the grooves 31c are formed shallow, strength of the crest parts 31a of the punched surface 31 is not degraded.SELECTED DRAWING: Figure 3 【課題】 ベルト式無段変速機用の金属エレメントの打ち抜き加工面の潤滑油保持性能を高める。【解決手段】 無段変速機用金属エレメント２３は、金型４１により打ち抜き加工される打ち抜き加工面３１に型抜き方向に延びる複数の山部３１ａおよび溝部３１ｂが交互に形成されるので、溝部３１ｂに潤滑油を保持することで打ち抜き加工面３１の潤滑性能を確保することができる。山部３１ａの頂面に型抜き方向に直交する方向に延びる複数の溝３１ｃが形成されており、溝３１ｃの深さは溝部３１ｂの深さよりも小さいので、金属エレメント２３の溝部３１ｂに加えて、金属エレメント２３の移動方向に直交する溝２３ｃにも潤滑油を保持して打ち抜き加工面３１の潤滑性能を更に高めることができ、しかも溝３１ｃは浅く形成されるので打ち抜き加工面３１の山部３１ａの強度を低下させることがない。【選択図】 図３