WO1995008411A1 - Procede de production sequentielle de tiges d'ejection creuses - Google Patents
Procede de production sequentielle de tiges d'ejection creuses Download PDFInfo
- Publication number
- WO1995008411A1 WO1995008411A1 PCT/JP1993/001348 JP9301348W WO9508411A1 WO 1995008411 A1 WO1995008411 A1 WO 1995008411A1 JP 9301348 W JP9301348 W JP 9301348W WO 9508411 A1 WO9508411 A1 WO 9508411A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- punching
- shape
- flange
- punch
- die
- 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.)
- Ceased
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D35/00—Combined processes according to or processes combined with methods covered by groups B21D1/00 - B21D31/00
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/20—Deep-drawing
- B21D22/206—Deep-drawing articles from a strip in several steps, the articles being coherent with the strip during the operation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D28/00—Shaping by press-cutting; Perforating
- B21D28/02—Punching blanks or articles with or without obtaining scrap; Notching
Definitions
- the present invention relates to a positioning part that has a structure in which parts are assembled together and has functions such as bolt penetration and flow path connection.
- Knock pins include hollow knock pins that can penetrate bolts to fix parts together, or connect flow paths between parts. According to the method of manufacturing this hollow knock pin, the pipe material is drawn to a predetermined size by drawing and then cut into a predetermined length using this material as a material. It is chamfered and the outer periphery is cylindrically polished.
- the processing process will be a single process, such as a pipe drawing process, end face processing, and cylindrical polishing.Therefore, an in-process inventory will be required between processes, and cutting and end face processing will be accompanied by the generation of chips. The efficiency of productivity is limited due to the occurrence of work and the low ratio of net time of cutting.
- the present invention provides a means for forming a predetermined shape by deep drawing a plate material, punching a bottom portion and a flange portion into a cylindrical shape, and forming both end portions with a mold, and further forming a predetermined shape, And a series of processing steps from the drawing step to the forming of the end face part are configured as a progressive die to enable continuous processing from sheet materials.
- Fig. 1 is a schematic diagram showing the relationship between the progressive die process sequence according to the present invention and the bottom punching, flange punching, and compression molding processes at both end faces after ionization, and Fig. 2 obtained by the manufacturing method of the present invention.
- Fig. 3 is a sectional view of the bottom part after punching
- Fig. 3 is a cross-sectional view of the part after flange punching
- Fig. 5 is a sectional view of the part after flange punching in Fig. 4
- Fig. 6 is compression molding FIG.
- (1) to (4) show the process sequence
- A-1 to A-4 show the change in shape due to the working process.
- Processes 1 to ⁇ are general deep drawing processes
- 6 process is punching the bottom part in the same mold after ionization
- 7 punching out the flange part
- the holders 14 are of the index type, and are turned upside down to compress and form both end faces by the upper punch 15, the die 16, the lower punch 17, and the die 18 in the process. It has become.
- the special feature of the feeding type is that, after drawing, insert the A-3 separated from the flange part in the step (1) into the holder 14 and move the index mechanism into the progressive type to move to the next step. I have incorporated it.
- the product shape diagram 2 obtained by the progressive die described above is entirely formed by plastic working, and the appearance is a plastic worked surface except when the outer peripheral portion is cylindrically polished as necessary. Therefore, since the surfaces corresponding to the conical surfaces of the outer peripheral portions at both ends are gently curved surfaces, they can be easily inserted into the fitting portion of the mating component, and there is no fear of generating burrs at the time of press fitting.
- Fig. 3 shows the structure of the punching die and the bottom punching process in the process (1) .
- the diameter is reduced and the wall thickness is made uniform by the ionization, and the bottom which is affected by the variation in the plate thickness is drawn by the punch 9.
- the radius of the corner of the narrowed part 10-1 of the die 10 should be 1 female or less, and the radius of the corner between the flange and the cylinder should be as small as possible.
- Punching of the bottom of 10-2 The shape of the die is parallel to the cutting edge, and the outer periphery is set to the shape of the bottom periphery of A-1.
- A-2-1 is slag.
- the uniformization of the volume of the part corresponding to the product part in this step does not generate excess thickness because the moldings at both ends described later are molded in a closed state.
- the A side in Fig. 3 shows the state immediately before Ayojung, and the B side shows the state immediately after punching the bottom.
- Fig. 4 shows the punching die structure of the flange in step (1). Since the volume of the punched part has an effect on the end face forming, a structure was used in which the shape of the corner between the flange and the cylindrical part was used, and the punch was performed in a sealed state.
- the outer diameter part of the 1-1-1 part of the punch 11 is a cutting edge, the guide part and the corner part match the radius shape of the corner part of the A-2, and the 13-1 part of the die 13
- the blade portion was sharp.
- the flange of A-2 was pressed against die 13 with the presser plate, and punching was performed in a constrained state.
- the C side in Fig. 4 shows the state immediately before punching the flange, and the D side shows the state immediately after punching.
- Figure 5 shows the shape obtained by the above method. Even if the flange is constrained and punched, the outer diameter of the portion A-3-2, which corresponds to the fractured surface, becomes brass in the A-3-3 section rather than the A-3-4 section. Therefore, it does not fall off even after being inserted into the holder 14 in Fig. 1 after punching, and the inner circumference corresponding to A-3-2 is larger than the inner circumference of A-3-4. .
- FIG. 6 shows the structure of the mold on both end surfaces in the step (1).
- punches 15 and 17 and dies 16 and 18 of the same shape that face up and down with the holder-14 as the boundary. When both punches and dies are in close contact with the holder 14, both ends are It was set to be in a closed state.
- the outer diameter of 15-1 and 17-1 of the punches 15 and 17 should match the outer diameter of the punch 9 for ironing shown in Fig. 3, and the outer diameter of the punches 15 and 17 should be Plan dimensions.
- the forming dies 16 and 18 were conical dies.
- the mold is limited to only the part to be molded, and is set so that A-4 is not attached to any of the molds.
- the E side in FIG. 6 shows the state immediately before molding, and the F side shows the molded state.
- the number of steps can be reduced by the same process of ioning and bottom punching, and a holder for an index plate after punching a flange can be used.
- Press forming is possible by forming the forming method of the insert and both end surfaces into a progressive die, and it is possible to make a multi-section die structure, which is advantageous in terms of production efficiency and processing economy. is there. [Brief description of the drawings]
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Description
Claims
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP93919689A EP0722792A4 (en) | 1993-09-20 | 1993-09-20 | PROCESS FOR THE SEQUENTIAL PRODUCTION OF HOLLOW EJECTION RODS |
| PCT/JP1993/001348 WO1995008411A1 (fr) | 1993-09-20 | 1993-09-20 | Procede de production sequentielle de tiges d'ejection creuses |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP1993/001348 WO1995008411A1 (fr) | 1993-09-20 | 1993-09-20 | Procede de production sequentielle de tiges d'ejection creuses |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO1995008411A1 true WO1995008411A1 (fr) | 1995-03-30 |
Family
ID=14070537
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP1993/001348 Ceased WO1995008411A1 (fr) | 1993-09-20 | 1993-09-20 | Procede de production sequentielle de tiges d'ejection creuses |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP0722792A4 (ja) |
| WO (1) | WO1995008411A1 (ja) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10358287A1 (de) * | 2003-12-11 | 2005-07-21 | Feintool International Holding Ag | Verfahren und Vorrichtung zum Herstellen eines dünnwandigen Bauteils |
| CN104859172A (zh) * | 2015-06-04 | 2015-08-26 | 安徽圣力达电器有限公司 | 矿用托盘一次成型液压机 |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5626492B2 (ja) * | 1977-09-09 | 1981-06-18 | ||
| JPH01107923A (ja) * | 1987-10-22 | 1989-04-25 | Nagata Buhin Seizo Kk | パイプの面取り加工方法 |
-
1993
- 1993-09-20 EP EP93919689A patent/EP0722792A4/en not_active Withdrawn
- 1993-09-20 WO PCT/JP1993/001348 patent/WO1995008411A1/ja not_active Ceased
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5626492B2 (ja) * | 1977-09-09 | 1981-06-18 | ||
| JPH01107923A (ja) * | 1987-10-22 | 1989-04-25 | Nagata Buhin Seizo Kk | パイプの面取り加工方法 |
Non-Patent Citations (1)
| Title |
|---|
| See also references of EP0722792A4 * |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0722792A1 (en) | 1996-07-24 |
| EP0722792A4 (en) | 1997-01-15 |
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