JPH04425U

JPH04425U -

Info

Publication number: JPH04425U
Application number: JP4080890U
Authority: JP
Priority date: 1990-04-17
Filing date: 1990-04-17
Publication date: 1992-01-06

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例のバリ無し切断装置
の要部縦断面図、第２図および第３図は第１図に
示すバリ無し切断装置の動作状態を示すもので、
第２図は切断途中の状態を示す図、第３図は切断
後の状態を示す図、第４図ａ，ｂは素材の切り口
面の拡大断面図であり、第４図ａは従来の切断装
置により切断された状態を示す図、第４図ｂは第
１図に示す装置で切断された状態を示す図、第５
図は第４図ａにおけるＡ−Ａ線断面図、第６図は
第４図ｂにおけるＢ−Ｂ線断面図である。１……パツド、２……下型、３……ポンチ、４
，５……しわ押え部材、４ａ，５ａ……しわ押え
面、７，８……突起、９，１０……傾斜面、１１
，１２……垂直面、１３……Ｒ取り（逃がし）、
ｃ……隙間（逃がし）、Ｗ……素材、Ｘ……クリ
アランス。 FIG. 1 is a vertical cross-sectional view of a main part of a burr-free cutting device according to an embodiment of the present invention, and FIGS. 2 and 3 show operating states of the burr-free cutting device shown in FIG.
Figure 2 is a diagram showing the state in the middle of cutting, Figure 3 is a diagram showing the state after cutting, Figures 4a and b are enlarged sectional views of the cut surface of the material, and Figure 4a is a conventional cutting method. FIG. 4b is a diagram showing the state cut by the device shown in FIG. 1, and FIG.
The figure is a cross-sectional view taken along the line A--A in FIG. 4a, and FIG. 6 is a cross-sectional view taken along the line B--B in FIG. 4b. 1...Pad, 2...Lower mold, 3...Punch, 4
, 5...Wrinkle pressing member, 4a, 5a...Wrinkle pressing surface, 7, 8...Protrusion, 9, 10...Slope surface, 11
, 12... Vertical surface, 13... R (relief),
C...Gap (relief), W...Material, X...Clearance.

Claims

[Scope of utility model registration request]

Protrusions are formed facing each other on the wrinkle pressing surfaces of the upper die side and the lower die side in correspondence with the positions where the material is to be cut, and the protrusions are formed so that the punch side is an inclined surface and the side opposite to the punch is the wrinkle presser. The tip has an acute angle perpendicular to the surface, and a relief is formed on the wrinkle pressing surface from the protrusion to the punch side to release excess material generated when the protrusion compresses the material, and the wrinkle pressing member and the punch are A burr-free cutting device characterized by setting a certain clearance between the burr and the burr.