JP4472797B2 - Metal product pressing and progressive processing - Google Patents

Metal product pressing and progressive processing Download PDF

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Publication number
JP4472797B2
JP4472797B2 JP29416298A JP29416298A JP4472797B2 JP 4472797 B2 JP4472797 B2 JP 4472797B2 JP 29416298 A JP29416298 A JP 29416298A JP 29416298 A JP29416298 A JP 29416298A JP 4472797 B2 JP4472797 B2 JP 4472797B2
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JP
Japan
Prior art keywords
metal
die
shape
thin
punching
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.)
Expired - Fee Related
Application number
JP29416298A
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Japanese (ja)
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JP2000117344A (en
Inventor
一夫 中島
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株式会社ピーエヌ
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Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method of pressing a metal product, and is a method suitable for pressing various metal products such as amateur electromagnetic clutches, gears, parts with hooks, parts with protrusions, caps, and the like.
[0002]
[Prior art]
Various metal products such as electromagnetic clutch amateurs are usually stamped, punched, or bent into a desired shape by pressing. In normal pressing, a punch with a smaller outer diameter than the die is lowered from above the metal material set on the die, and the metal material is punched into a desired shape, or a hole is made in a desired portion of the metal material. Yes. There are various types of press working, and special methods include a precision shearing method such as a fine blanking method and an opposing die shearing method. However, in any method, a punch with a smaller outer diameter is dropped from above the metal material set on the die to punch out the metal material or make a hole. The principle is the same.
[0003]
[Problems to be solved by the invention]
The separation surface of a product punched by a conventional general press process is difficult to be smooth, and a part of the separation surface, a broken surface, a burr, and the like are generated. As metal materials become thicker, they are particularly likely to occur. The fine blanking method and the opposed die shearing method have the advantage that the dimensional accuracy of the separation surface is high (dimensions are easy to come out), but there are new problems such as an increased number of processing steps and burrs.
[0004]
[Means for Solving the Problems]
The object of the present invention is to prevent the occurrence of dripping, fracture surfaces, burrs, etc. on the separation surface of the pressed product, and even if the metal material becomes a little thicker, they hardly occur, and the metal product is continuously formed. An object of the present invention is to provide a press working method that can be formed into a mold.
[0005]
In the metal product press working method according to the first invention of the present application, the metal material 1 is pressed with a pressurizing tool 3 having an outer shape larger than the inner shape of the die 2, and a part of the metal material 1 is subjected to the thickness direction. From the inner shape of the die 2, a pressing portion 4 that is pushed into the die 2 halfway is formed to form a pushing portion 4 that protrudes into the die 2, and a thin portion 5 that is continuous with the metal material 1 is formed on the entire outer periphery of the pushing portion 4. The punching punch 6 having a small outer shape is pressed in the same direction as the pressing direction by the pressurizing tool 3, and the entire periphery of the pushing portion 4 is sheared from the thin portion 5 by the punching punch 6 and the die 2. Then, it is a processing method of punching and separating.
[0006]
In the metal product pressing method according to the second invention of the present application, the metal material 1 is pressed with a pressurizing tool 3 having an outer shape larger than the inner shape of the die 2, and a part of the metal material 1 is subjected to the thickness direction. A push-in portion 4 that is pushed into the die 2 halfway is formed, and a thin portion 5 that is continuous with the metal material 1 is formed on the entire circumference of the upper outer periphery of the push-in portion 4. It is transferred to a punching die 9 having an inner shape larger than 2, and the pushing portion 4 and the entire circumference of the thin portion 5 are arranged inside the punching die 9, and are smaller than the inner shape of the punching die 9. The punching punch 6 having an outer shape is pressed in the same direction as the pressurizing direction by the pressurizing tool 3, and the entire circumference of the thin portion 5 is formed from the metal material 1 by the punching punch 6 and the die 9 after the transfer. Shears, punches and separates and pushes The thin portion 5 upper edge all around the 4 is a processing method for forming a flanged product 14 with a thin-plate flange 13 protruding.
[0007]
In the metal product pressing method according to the third invention of the present application, the metal material 1 is pressed with a pressurizing tool 3 having an outer shape larger than the inner shape of the die 2, and a part of the metal material 1 is subjected to the thickness direction. forming a thin portion 5 continuous with the metal material 1 in the entire circumference of the upper outer circumference of the pushing portion 4 to form a pushing portion 4 projecting into the die 2 by pushing do the die 2 halfway, the die and the metal material 1 It is transferred to a punching die 9 having an inner shape larger than 2, and the pushing portion 4 and a part of the thin portion 5 are arranged inside the punching die 9, and are smaller than the inner shape of the punching die 9. The punching punch 6 having an outer shape is pressed in the same direction as the pressurizing direction by the pressurizing tool 3, and a part of the thin portion 5 in the circumferential direction is made of a metal material by the punching punch 6 and the transferred die 9. 1 to part of the circumferential direction of the push-in part 4 A product 16 with protrusions having a thin plate-like protrusion 15 in which a part of the thin part 5 protrudes laterally at a part in the circumferential direction of the upper peripheral edge of the pushing part 4 by shearing from the part 5 respectively. This is a processing method for molding.
[0008]
According to a fourth aspect of the present invention of the present application, there is provided a method for progressively processing a metal product, wherein the metal material 1 is intermittently fed to a number of stages and the metal material 1 is pressed at those stages. It is a progressive processing method which processes the said metal material 1 with the press processing method of the metal product in any one of Claims 1 thru | or 3 in the arbitrary stages in a stage.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
(Embodiment 1)
A first embodiment of the metal product processing method of the present invention will be described with reference to FIG. 1 by taking as an example the case of forming an armature 30 for an automobile electromagnetic clutch shown in FIG. This processing method includes the following steps 1 to 3.
1) A plate-shaped metal material 1 is set on a die 2 as shown in FIG.
2) As shown in FIG. 1 (b), the metal material 1 is pressed from above by a presser 3 having an outer shape larger than the inner shape of the die 2, so that the metal material 1 is halfway in the thickness direction. 2 to form a push-in portion 4 and a thin portion 5 on the outer periphery thereof. In this case, the pushing part 4 is formed in the metal material 1 as shown in FIG.
3) From above the pushing part 4 pushed into the die 2 halfway, as shown in FIG. 1 (c), punching out an outer shape which is different from the pressing tool 3 and smaller than the inner shape of the die 2. The punch 6 is lowered to punch out the pushing portion 4. In this case, since the pushing portion 4 is separated from the surrounding thin portion 5, the pushing portion 4 is surely punched even with a weak pressure, and the outer peripheral surface (separation surface) 12 of the punched product 11 is free from any cracks, fracture surfaces, burrs, etc. It hardly occurs.
[0011]
(Embodiment 2)
A second embodiment of the method for processing a metal product of the present invention will be described by taking as an example the case of forming a brazed product 14 with ridges 13 around the entire upper edge of the product 11 as shown in FIG. . This processing method includes the following steps 1 to 4.
1) A plate-shaped metal material 1 is set on a die 2 as shown in FIG.
2) As shown in FIG. 2 (b), the metal material 1 is pressed from above with a pressurizing tool 3 having an outer shape larger than the inner shape of the die 2, and the metal material 1 is partially pressed against the die 2. Include.
3) As shown in FIG. 2C, the metal material 1 is set on a die 9 for punching having an inner shape larger than the inner shape of the die 2. At this time, the pushing portion 4 and the entire circumference of the thin portion 5 are arranged so as to be inside the punching die 9. A punching punch 6 having an outer shape smaller than the inner shape of the punching die 9 is arranged above the metal material 1, which is different from the pressurizing tool 3.
4) The punching punch 6 is lowered from above the pushing portion 4, and the pushing portion 4 and the entire circumference of the thin portion 5 are punched to form a brazed product 14 with a flange 13 on the entire upper edge of the product 11. To do. In this case, since the thin portion 5 is sheared with a weak pressure, the outer peripheral surface (separation surface) 12 of the punched brazed product 14 hardly generates any cracks, fracture surfaces, burrs, and the like.
[0012]
(Embodiment 3)
In the third embodiment of the method for processing a metal product of the present invention, as shown in FIG. 3 (d), a product 16 with protrusions having a protrusion 15 attached to a part in the circumferential direction of the upper edge of the product 11 is formed. Will be described as an example. This processing method includes the following steps 1 to 4.
1) A plate-shaped metal material 1 is set on a die 2 as shown in FIG.
2) As shown in FIG. 3B, the metal material 1 is pressed from above with a pressurizing tool 3 having an outer shape larger than the inner shape of the die 2, and the metal material 1 is partially pressed in the thickness direction. And a thin portion 5 is formed on the outer periphery thereof.
3) As shown in FIG. 3C, the metal material 1 is set on the second die 9 having an inner shape larger than the inner shape of the die 2. At this time, it arrange | positions so that the pushing part 4 and the thin part 5 may be located inside the 2nd die | dye 9. FIG. A punching punch 6 having an outer shape smaller than the inner shape of the punching die 9 is disposed.
4) As shown in FIG. 3 (d), the punching punch 6 is lowered from above the indented portion 4 and the thin portion 5, and the indented portion 4 and a part of the thin portion 5 are punched together to A product 16 with protrusions, in which protrusions 15 protrude from a part of the periphery, is obtained. In this case, since the pushing portion 4 and the protrusion 15 are separated from the thin portion 5, the pushing portion 4 and the protrusion 15 are surely punched even under a weak pressure. Hardly occurs.
[0014]
(Embodiment 4)
A fourth embodiment of the metal product processing method of the present invention will be described with reference to FIG. 5 by taking as an example the case of incorporating the automotive electromagnetic clutch armature 30 shown in FIG. 7 into the progressive processing method. This processing method includes the following steps 1 to 6.
1) The strip-shaped long metal material 1 is intermittently fed in the right direction in FIG. 5 and the metal material 1 is set on the die of the external EM processing stage A in FIG.
2) In the outer shape EM processing stage B, the metal material 1 is pressed from above with a pressurizing tool having an outer shape larger than the inner shape of the die, and the metal material 1 is halfway in the die as shown in FIG. To form the circular pushing portion 4 having the same contour shape as that of the armature 30, and at the same time, the guide holes 32 are punched at four locations around the pushing portion 4.
3) In the flat press stage D after the next idle stage C, the metal material 1 is flat pressed to be shaped.
4) In a subsequent drilling stage E, a predetermined portion inside the pushing portion 4 is punched to open three elongated arc holes 20.
5) In the next drilling stage F, the circular hole 21 is opened by punching out the central portion of the pushing portion 4.
6) At the blanking stage H after the next idle stage G, as shown in FIG. 5 (c), the punching punch 6 is lowered from above the pushing portion 4, and the pushing portion 4 is punched (blanked). ) Separate from the thin part 5. In this case, the die 2 has the same inner diameter as that of the die 1 in the outer shape EM processing stage B, but the punching punch 6 has an outer shape that is the same as or smaller than the inner shape of the die 2.
[0015]
(Embodiment 5)
A fifth embodiment of the metal product processing method of the present invention will be described with reference to FIG. 6 by taking as an example the case of incorporating an automobile electromagnetic clutch armature into the progressive processing method. In this method, the spur 8 outside the pushing portion 4 is cut to obtain the pushing portion 4.
1) The strip-shaped long metal material 1 is intermittently fed to the right in FIG. 6 and the metal material 1 is set under the die of the stage A.
2) In the outer shape EM processing stage B, the metal material 1 is pressed from below with a pressurizing tool having an outer shape larger than the inner shape of the die, and the metal material 1 is halfway in the die as shown in FIG. 2 to form a circular pushing portion 4. At the same time, the guide holes 32 are punched in four places around the pushing portion 4.
3) In the flat press stage D after the next idle stage C, the metal material 1 is flat pressed from below to be shaped.
4) In the subsequent drilling stage E, a predetermined portion inside the pushing portion 4 is punched upward from below to open three elongated arc holes 20. At the same time, the circular portion 21 is opened by punching out the central portion of the pushing portion 4.
5) In the next outer shape cutting stage F, as shown in FIG. 6C, the cut punch 7 is lowered onto the thin portion 5 from above to cut the thin portion 5, and both the upper and lower sides of the pushing portion 4 are The outer hatched portion (scrap) 8 is removed. In this case, the die 9 is disposed under the metal material 1. The cut punch 7 has an inner shape that is the same as or slightly larger than the back side outer shape of the thin portion 5.
6) In the cut-off stage G in FIG. 6, the carrier (shaded portion) 25 connecting the pushing portions 4 is cut, and the pushing portions 4 are individually separated (cut off).
[0016]
(Other embodiments)
In the present invention, the die can be fixed and the punch can be lowered, conversely, the punch can be fixed and the die can be raised, or both the punch and the die can be brought close to or separated from each other. Further, the punch and the die can be arranged upside down.
[0017]
In the illustrated embodiment, the metal material is pushed in to form the amateur contour portion (pushing portion) 4, and then the inside of the pushing portion 4 is drilled. It can also be done in any order. Also, other stages not shown can be incorporated, or unnecessary stages can be removed. Needless to say, the present invention is not limited to the processing of the amateur, but can be used to process other metal products or metal products of any shape.
[0018]
【The invention's effect】
In the processing method according to the first aspect of the present invention, the metal material is pushed halfway in the thickness direction to form the thin portion 5 on the outside of the push portion 4, and thereafter, the thin portion 5 is punched or cut. In order to separate the pushing portion 4 from the thin portion 5, the thin portion 5 is easily sheared with a weak pressure, and the pushing portion 4 is easily punched out.
[0019]
Of the present invention, the processing method of claim 2 has the same effect as the processing method of claim 1, and further, the product with the flange 13 on the entire periphery of the upper periphery or the protrusion 15 on a part of the upper periphery. You can get the product with the attached.
[0021]
In the metal product processing method according to claims 3 and 4 of the present invention, the metal product can be continuously processed because the processing method according to claims 1 and 2 is incorporated into progressive processing, and workability is improved. Improves and reduces costs.
[Brief description of the drawings]
1A and 1B show a first embodiment of a processing method of the present invention, wherein FIG. 1A is an explanatory diagram before pressing, FIG. 1B is an explanatory diagram after pressing, FIG. 1C is an explanatory diagram of a punching process, (D) is a detailed view of the indented portion of the metal material in (b).
2A and 2B show a second embodiment of the processing method of the present invention, wherein FIG. 2A is an explanatory diagram before pressing, FIG. 2B is an explanatory diagram after pressing, FIG. 2C is an explanatory diagram before punching, (D) is explanatory drawing after punching.
FIG. 3 shows a third embodiment of the processing method of the present invention, wherein (a) is an explanatory view before pressing, (b) is an explanatory diagram after pressing, (c) is an explanatory diagram before punching, (D) is explanatory drawing after punching.
FIG. 4 is a perspective view showing an example of a metal material after being pressed in the processing method of the present invention.
5A is an explanatory plan view of the progressive processing method of the present invention, FIG. 5B is a cross-sectional view of the outer shape EM processing step in the progressive processing method of FIG. 5A, and FIG. 5C is the sequential order of FIG. Sectional drawing of the blank process in a feeding method.
6A is a plan view of the progressive processing method of the present invention, FIG. 6B is a cross-sectional view of an outer shape EM processing step in the progressive processing method of FIG. 6A, and FIG. Sectional drawing of the external shape cutting process in a feeding method.
FIG. 7 is a perspective view of an amateur as an example of a metal product processed by the metal product processing method of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Metal material 2 Dies 3 Pressurizing tool 4 Pushing part 5 Thin part 6 Punch for punching 8 Scrap 9 Die for punching

Claims (4)

  1.   The metal material (1) is pressed by a pressurizing tool (3) having an outer shape larger than the inner shape of the die (2), and a part of the metal material (1) is pushed into the die (2) halfway in the thickness direction. Then, a pressing portion (4) protruding into the die (2) is formed, and a thin portion (5) continuous with the metal material (1) is formed on the entire circumference of the upper outer periphery of the pressing portion (4). The punching punch (6) having an outer shape smaller than the inner shape of 2) is pressed from the same direction as the pressing direction by the pressurizing tool (3), and the punching punch (6) and the die (2) A method for pressing a metal product, characterized in that the entire periphery of the indented portion (4) is sheared from the thin portion (5) and punched and separated.
  2. The metal material (1) is pressed with a pressurizing tool (3) having an outer shape larger than the inner shape of the die (2), and a part of the metal material (1) is pushed into the die (2) halfway in the thickness direction. The pushing portion (4) protruding into the die (2) is formed and the thin portion (5) continuous with the metal material (1) is formed on the entire outer periphery of the pushing portion (4). (1) is transferred to a punching die (9) having an inner shape larger than that of the die (2), and the pushing portion (4) and the entire circumference of the thin portion (5) are placed inside the punching die (9). The punch for punching (6) having an outer shape smaller than the inner shape of the punching die (9) is pressed in the same direction as the pressing direction by the pressurizing tool (3), and the punch for punching is punched. the entire periphery of the metal material of the thin portion by the post (6) and said sorting die (9) (5) (1 And then punching and separating to form a product (14) with a hook with a thin plate-like ridge (13) projecting the thin part (5) on the entire upper edge of the indented part (4). A metal product press working method.
  3. The metal material (1) is pressed with a pressurizing tool (3) having an outer shape larger than the inner shape of the die (2), and a part of the metal material (1) is pushed into the die (2) halfway in the thickness direction. The pushing portion (4) protruding into the die (2) is formed and the thin portion (5) continuous with the metal material (1) is formed on the entire outer periphery of the pushing portion (4). (1) is transferred to a punching die (9) having a larger inner shape than the die (2), and the pushing portion (4) and a part of the thin portion (5) are placed inside the punching die (9). The punching punch (6) having an outer shape smaller than the inner shape of the punching die (9) is pressed in the same direction as the pressurizing direction by the pressurizing tool (3), and the punching punch ( the thin portion by a die (9) after 6) and said sorting (5) a metal material part of the circumferential direction of the From (1), the circumferential portion of the pushing portion (4) is sheared from the thin portion (5) and punched and separated, and the thin portion is formed on the circumferential portion of the upper peripheral edge of the pushing portion (4). A method of pressing a metal product, characterized in that a product (16) with a projection having a thin plate-like projection (15) in which a part of (5) projects sideways is formed.
  4.   In the progressive processing method of a metal product in which the metal material (1) is intermittently fed to a number of stages and the metal material (1) is pressed at those stages, the metal material (1 ) Is processed by the metal product pressing method according to any one of claims 1 to 3, wherein the metal product is progressively processed.
JP29416298A 1998-10-15 1998-10-15 Metal product pressing and progressive processing Expired - Fee Related JP4472797B2 (en)

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Application Number Priority Date Filing Date Title
JP29416298A JP4472797B2 (en) 1998-10-15 1998-10-15 Metal product pressing and progressive processing

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Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002079325A (en) * 2000-09-07 2002-03-19 Asahi Optical Co Ltd Manufacturing method of small part
JP2002096119A (en) * 2000-09-14 2002-04-02 Asahi Optical Co Ltd Manufacturing method for small part
JP2004011744A (en) * 2002-06-06 2004-01-15 Minebea Co Ltd Toothed electromagnetic clutch brake
JP4735380B2 (en) 2005-07-01 2011-07-27 トヨタ紡織株式会社 Workpiece manufacturing method
JP5008306B2 (en) * 2006-01-05 2012-08-22 タカタ株式会社 Doweling method for buckle base member
JP4876804B2 (en) * 2006-09-11 2012-02-15 株式会社デンソー Shaving method
JP2010167536A (en) * 2009-01-23 2010-08-05 Seiko Epson Corp Actuator and actuator connected body
JP2009279658A (en) * 2009-09-02 2009-12-03 Pn:Kk Press working method for armature for electromagnetic clutch
JP6279889B2 (en) * 2013-11-20 2018-02-14 武蔵精密工業株式会社 Hole formation method
JP6119999B2 (en) * 2013-11-21 2017-04-26 トヨタ紡織株式会社 Press working method and press working apparatus
JP6316104B2 (en) * 2014-06-06 2018-04-25 永光精器株式会社 Washer manufacturing method
JP6507991B2 (en) * 2015-10-22 2019-05-08 トヨタ紡織株式会社 Press forming method and press forming apparatus
CN106881395A (en) * 2015-12-15 2017-06-23 聊城市新欣金帝保持器科技有限公司 A kind of impulse- free robustness is punched baiting method and blanking equipment
CN107597947A (en) * 2017-10-26 2018-01-19 成都宏明双新科技股份有限公司 A kind of impact forming method for improving thick material product euphotic belt

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