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US 11,504,815 B2Granted
Method for producing a cut section for a drill bit
AssigneeHilti Aktiengesellschaft
InventorsFlorian Schroeder, Guenter Domani, Pingyan Rong
Life of this patent
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Abstract
A method for producing a cutting section from a closed tubular element (14) which is in the form of a hollow cylinder and from one or more drill segments (16) which are connected to the closed tubular element (14).
Claims12
A method for producing a cutting section for a drill bit, the cutting section connectable to a drill shaft section of the drill bit via a releasable connecting device, the method comprising the following steps:
- manufacturing a first sheet metal part having a first height between first end surfaces, a first length between first abutting edges and a first sheet metal thickness;
- manufacturing a second sheet metal part having a second height between second end surfaces, a second length between second abutting edges and a second sheet metal thickness, the first height being smaller than the second height and the first length smaller than the second length;
- aligning the first and second sheet metal parts with each other, the first sheet metal part being arranged on the second sheet metal part;
- connecting the first sheet metal part and second sheet metal part to each other in the aligned state to form a double sheet metal part;
- forming the double sheet metal part into an open tubular element, wherein the first sheet metal part is arranged on an inner side of the open tubular element;
- connecting the open tubular element at least at the second abutting edges of the second sheet metal part to form a closed tubular element;
- and
- connecting at least one drill segment to the closed tubular element.
5 more elements
Dependencies are inferred from the claim text.