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Bunka shishu (文化刺繍), in English often shortened to bunka, is a form of Japanese embroidery originating in the early 19th century [1] that became more widespread around the turn of the 20th century, [2] before then being introduced to the US after World War II. [1]
A punch needle stitch is made by forcing the needle through the weave of the fabric, creating a loop that is kept in place by friction. [1] [5] [7] The tool is held so that the eye of the needle stays on the opposite side of the direction of the stitch. [1] [4] [8] Punch needle embroidery is typically worked from the front of the fabric. On the ...
Punching software with graphical user interface, intuitive operable. Programming is done on a PC equipped with appropriate software that can be part of the machine or a connected external workstation. For generating a new program engineering data can be imported or pasted per mouse and keyboard.
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The punch force required to punch a piece of sheet metal can be estimated from the following equation: [4] F = 0.7 t L ( U T S ) {\displaystyle F=0.7tL(UTS)} Where t is the sheet metal thickness, L is the total length sheared (perimeter of the shape), and UTS is the ultimate tensile strength of the material.
Editor’s note: The podcast Chasing Life With Dr. Sanjay Gupta explores the medical science behind some of life’s mysteries big and small. You can listen to episodes here. (CNN) — The ...
Punched cards in use in a Jacquard loom A punch for Jacquard cards. Originally, Jacquard machines were mechanical, and the fabric design was stored on a series of punched cards which were joined to form a continuous chain. The Jacquards were often small and controlled relatively few warp ends. This required a number of repeats across the loom ...
Instead, cards were manipulated by passing one or more slim needles through selected holes in a group of cards. While the rest of the deck would be lifted by moving the needles, those cards that were notched in the hole positions where the needles were inserted would be left behind. Using two or more needles produced a logical and function.
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