Method for producing cutlery and a cutlery blankig tool
A punching and tableware technology, applied in the field of punching tools, can solve the problems of weakening the anti-rust protection of finished tableware, achieve good quality and reduce costs
Inactive Publication Date: 2017-05-10
IKEA SUPPLY
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- Abstract
- Description
- Claims
- Application Information
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Problems solved by technology
This will weaken the rust protection of the finished cutlery
Method used
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[0016] The blanking or production of one type of cutlery is shown in the specific figures. Those skilled in the art will recognize that the principles of blanking and producing tableware are the same regardless of the type of tableware to be produced.
[0017] The expression "cutlery" used in this description refers to a table knife or tableware and it includes knives, spoons and forks.
[0018] The expressions "upper", "lower" and similar expressions used in this description refer to the normal orientation of the cutlery blanking and forming tool.
[0019] An example illustrated embodiment of a cutlery blanking tool includes three basic components. The parts are an upper part in the form of a punch 1 , an intermediate part in the form of a holder 2 and a lower part in the form of a die 3 .
[0020] The cutlery blanking tool will be used in a normal press for blanking cutlery. Since the invention is not directed to such a press and since the function of such a press is know...
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Abstract
The present invention is directed to a method of producing cutlery and a blanking tool to be used in said method of producing cutlery. In the method a sheet metal (17) is placed on a die (3). The sheet metal (17) is held fixed on the die (3) by means of a holder (2). In a blanking stroke a punch (1) cooperates with the die (3) to form at least a part of a circumference of a cutlery blank (20) in the sheet metal (17) while the holder holds the sheet metal (17) fixed on the die (3). Thereafter the sheet metal (17) is released from the die (3). The blanking tool comprises an upper part in the form of a punch (1), an intermediate part in the form of a holder (2) and a lower part in the form of a die (3). The blanking tool further comprises means to move the punch (1) and the holder (2) together as one unit towards the die (3) during a first part of a blanking stroke for the punch (1). The punching tool comprises means to move the punch (1) in relation to the holder (2) during a second part of the blanking stroke for the punch (1). The holder (2) abuts the sheet metal (17) placed on the die (3) during said second part of the blanking stroke for the punch (1).
Description
technical field [0001] The invention relates to the production of tableware. The invention relates to a method for producing tableware and a blanking tool for producing tableware. Background technique [0002] Current cutlery is typically made in multiple steps, with manufacturing steps including blanking, trimming and grinding. The trimming and grinding steps are usually performed multiple times between other steps. Each cutlery piece is typically made by blanking out of stainless steel metal sheet. [0003] During the blanking step, the first part of the cut of the cutlery blank will be relatively sharp and the following part will be relatively rough. This is a well known phenomenon and is due to the fact that in the shearing process the first part is actually a shearing process and the second part is a tearing process. Rough surfaces formed by the tearing process will have to be ground to a considerable extent. Typically, there is a gap of between 10% and 15% between...
Claims
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IPC IPC(8): B21D53/60B21D28/14B21D28/16
CPCB21D53/60B21D53/62B21D53/64B21D28/14B21D28/16B21D28/02
Inventor 拉尔斯·阿尔姆布拉德
Owner IKEA SUPPLY