Method and device for producing honeycomb structure
AssigneeNGK Insulators, Ltd.
InventorRyuki Suzuki
Life of this patent
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Abstract
A method for producing a honeycomb structure includes: a step of adjusting a penetration depth of a processing tool from an outer peripheral surface of a honeycomb structure base body having the honeycomb structure portion to a radially inward direction; and a step of forming at least one slit in the honeycomb structure base body according to the adjusted penetration depth, and wherein the penetration depth is adjusted by measuring a wall thickness of the outer peripheral wall of the honeycomb structure base body and then adding a predetermined value to the wall thickness.
Claims10
A method for producing a honeycomb structure, the honeycomb structure comprising a honeycomb structure portion having:
- an outer peripheral wall;
- and a partition wall arranged on an inner side of the outer peripheral wall, the partition wall defining a plurality of cells each extending from one end face to other end face to form a flow path, the honeycomb structure further comprising a plurality of slits each extending radially inward from an outer peripheral surface of the honeycomb structure and extending in an extending direction of the cells,
- wherein the method comprises:
- a step of adjusting a penetration depth of a processing tool from an outer peripheral surface of a honeycomb structure base body having the honeycomb structure portion to a radially inward direction;
- and
- a step of forming at least one slit in the honeycomb structure base body according to the adjusted penetration depth, and
- wherein the penetration depth is adjusted by measuring a wall thickness of the outer peripheral wall of the honeycomb structure base body and then adding a predetermined value to the wall thickness;
- and
- wherein the predetermined value is t×0.1 or more and p×0.35 or less, in which t is a thickness of the processing tool (mm), and p is a pitch between the cells (mm).
A device for producing a honeycomb structure, the honeycomb structure comprising a honeycomb structure portion having:
- an outer peripheral wall;
- and a partition wall arranged on an inner side of the outer peripheral wall, the partition wall defining a plurality of cells each extending from one end face to other end face to form a flow path, the honeycomb structure further comprising a plurality of slits extending radially inward from an outer peripheral surface of the honeycomb structure and extending in an extending direction of the cells,
- wherein the device comprises:
- a holding portion for holding a honeycomb structure base body having the honeycomb structure portion;
- a processing tool for forming the plurality of slits in the honeycomb structure base body held by the holding portion;
- at least one measurement unit for measuring a wall thickness of the outer peripheral wall of the honeycomb structure base body;
- and
- a control unit for performing control such that a predetermined value is added to the wall thickness measured by the measurement unit to adjust a penetration depth of the processing tool from the outer peripheral surface of the honeycomb structure base body to a radially inward direction, and the processing tool is penetrated from the outer peripheral surface of the honeycomb structure base body to the radially inward direction at the adjusted depth;
- and
- wherein the predetermined value is t×0.1 or more and p×0.35 or less, in which t is a thickness of the processing tool (mm), and p is a pitch between the cells (mm).
Dependencies are inferred from the claim text.