| 摘要 |
The present invention discloses an improved manufacturing method, a hole-punching assembly and a pressing structure for a hole-punching unit. The method of the present invention comprises the following steps: 1 Several balancing pieces, made of aluminum and with a rectangular shape, are swiftly formed by extrusion, and an indentation area is provided on one side of each balancing piece; 2 An elongated slot is formed by an application of stamping on the indentation area of each balancing piece. 3 Several rectangular pieces (the number of the rectangular pieces should be equal to that of the balancing pieces) made of iron are obtained, and a row of holes are provided by a single application of stamping on each rectangular piece; 4 Each of these rectangular pieces is fitted onto the indentation area of a balancing piece, and the balancing pieces are connected together by screws or bolts. The manufacturing method can lower the production cost of the hole-punching assembly and simplify the production process of the hole-punching assembly.
|
