JPS5492565A - Projection forming for sheet material - Google Patents
Projection forming for sheet materialInfo
- Publication number
- JPS5492565A JPS5492565A JP15880677A JP15880677A JPS5492565A JP S5492565 A JPS5492565 A JP S5492565A JP 15880677 A JP15880677 A JP 15880677A JP 15880677 A JP15880677 A JP 15880677A JP S5492565 A JPS5492565 A JP S5492565A
- Authority
- JP
- Japan
- Prior art keywords
- sheet material
- punch
- work
- dies
- stepped shape
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Abstract
PURPOSE: To obtain a large height of projection through one pass of the projection forming work, by forming at least one of the die hole of the dies and the punch for the projection forming work into a plurally stepped shape so as to successively reduce the diameter and size of the step toward the projecting end.
CONSTITUTION: The die hole of dies 22 if formed into a plurally stepped shape so as to successively reduce the hole diameter toward the downside which is to be the projecting end of the sheet material 11. The tip of the punch 23 is similarly formed into a stepped shape so as to reduce the diameter of the step successively toward the projecting end of the sheet material 11. By thus arranging, one pass of the projecting work with the punch 23 gives the effect equivalent to the continuous projecting work with the punch and dies of larger size to the sheet material 11. According to this method, the number of labor is greatly reduced. As a rusult, the cost of the product can be reduced, and the focusing characteristic is improved by the improved accuracy of the assembly work.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15880677A JPS5492565A (en) | 1977-12-29 | 1977-12-29 | Projection forming for sheet material |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15880677A JPS5492565A (en) | 1977-12-29 | 1977-12-29 | Projection forming for sheet material |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5492565A true JPS5492565A (en) | 1979-07-21 |
Family
ID=15679755
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15880677A Pending JPS5492565A (en) | 1977-12-29 | 1977-12-29 | Projection forming for sheet material |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5492565A (en) |
-
1977
- 1977-12-29 JP JP15880677A patent/JPS5492565A/en active Pending
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS57142726A (en) | One stroke multiple stage forming press | |
JPS5530357A (en) | Production of v-pulley | |
JPS54125153A (en) | Manufacture of cold formed high accuracy slug | |
JPS5492565A (en) | Projection forming for sheet material | |
JPS5650743A (en) | Method and device of forming shaft with center hole | |
JPS5633134A (en) | Blank holding mechanism for press blanking die | |
JPS5462161A (en) | Forming method for pipe | |
JPS5395861A (en) | Preparation of deformed products | |
JPS5714440A (en) | Method and device for production of product having tooth profile | |
JPS5725224A (en) | Production of watch parts | |
JPS5436384A (en) | Forming of end part of pipe | |
JPS5524753A (en) | Drawing die | |
JPS5425586A (en) | Method of punching metal-covered plate | |
JPS57149042A (en) | Production for drum for magnetic picture recording and reproducing device | |
JPS5699040A (en) | Die for manufacturing flanged hollow product | |
JPS53129386A (en) | Blank feeding means for presses | |
JPS5623336A (en) | Manufacture of middle joint for hose | |
JPS5555819A (en) | Hydraulic forming die for thin shape bent pipe and forming method | |
JPS5611131A (en) | Continuous forming machine for head of flanged bolt | |
JPS5360780A (en) | Electromagnetic tool rest | |
Deveney et al. | Blanking and Forming Tapered Wall Articles | |
JPS5514179A (en) | Blanking die | |
JPS5533856A (en) | Blanking die for acute angle parts | |
JPS561217A (en) | Manufacturing apparatus for metal made polygonal cylinder | |
JPS5379228A (en) | Manufacture of mold winding |