Honing apparatus
AssigneeFuji Jukogyo Kabushiki Kaisha
InventorYasutaka Yamamoto
Life of this patent
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Abstract
A rotary tool of a honing apparatus is provided with honing grindstones that grind a cylinder bore, and guide members that slide in a guide hole of a tool guide. The guide members are each constituted of a base member fixed to the tool body and a slide member fixed to the base member. The base member is composed of a ceramic material, and the slide member is composed of a cemented carbide material. With the guide members having such a configuration, electrolytic dressing is performed on the honing grindstones.
Claims16
A honing apparatus including a rotary tool that grinds an inner cylindrical surface to be formed in a workpiece, and a tool guide disposed at one end of the workpiece and having a guide hole that guides the rotary tool to the inner cylindrical surface, the honing apparatus comprising:
- a guide member provided on an outer periphery of the rotary tool and having a slide surface that slides in the guide hole;
- an electrically conductive grindstone provided on the outer periphery of the rotary tool and having a grinding surface that grinds the inner cylindrical surface;
- an electrode member provided in the guide hole of the tool guide and facing the grinding surface of the electrically conductive grindstone when the rotary tool passes through the guide hole;
- and
- an electrolytic dressing unit for applying voltage to the electrically conductive grindstone and the electrode member when the rotary tool passes through the guide hole,
- wherein the guide member includes a base member provided on the outer periphery of the rotary tool, and a slide member provided on the base member and serving as the slide surface, and
- wherein the base member is composed of a material having higher insulating properties than the slide member, and the slide member is composed of a material having higher abrasion resistance properties than the base member.
A honing apparatus including a rotary tool that grinds an inner cylindrical surface to be formed in a workpiece, and a tool guide disposed at one end of the workpiece and having a guide hole that guides the rotary tool to the inner cylindrical surface, the honing apparatus comprising:
- a guide member provided on an outer periphery of the rotary tool and having a slide surface that slides in the guide hole;
- an electrically conductive grindstone provided on the outer periphery of the rotary tool and having a grinding surface that grinds the inner cylindrical surface;
- an electrode member provided in the guide hole of the tool guide and facing the grinding surface of the electrically conductive grindstone when the rotary tool passes through the guide hole;
- and
- an electrolytic dressing unit for applying voltage to the electrically conductive grindstone and the electrode member when the rotary tool passes through the guide hole,
- wherein the guide member includes a base member provided on the outer periphery of the rotary tool and having an insulation layer, and a slide member provided on the base member and serving as the slide surface, and
- wherein the insulation layer is composed of a material having higher insulating properties than the slide member, and the slide member is composed of a material having higher abrasion resistance properties than the insulation layer.
Dependencies are inferred from the claim text.