US20140157855A1 - Tooling for headed pilot pointed bolts - Google Patents
Tooling for headed pilot pointed bolts Download PDFInfo
- Publication number
- US20140157855A1 US20140157855A1 US13/937,270 US201313937270A US2014157855A1 US 20140157855 A1 US20140157855 A1 US 20140157855A1 US 201313937270 A US201313937270 A US 201313937270A US 2014157855 A1 US2014157855 A1 US 2014157855A1
- Authority
- US
- United States
- Prior art keywords
- station
- case
- tool
- head
- bolt
- 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.)
- Abandoned
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K1/00—Making machine elements
- B21K1/44—Making machine elements bolts, studs, or the like
- B21K1/46—Making machine elements bolts, studs, or the like with heads
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J13/00—Details of machines for forging, pressing, or hammering
- B21J13/02—Dies or mountings therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K1/00—Making machine elements
- B21K1/44—Making machine elements bolts, studs, or the like
- B21K1/46—Making machine elements bolts, studs, or the like with heads
- B21K1/50—Trimming or shearing formed heads, e.g. working with dies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K27/00—Handling devices, e.g. for feeding, aligning, discharging, Cutting-off means; Arrangement thereof
Abstract
Tooling for making pointed headed bolts of a given diameter in numerous lengths with roll thread ready threaded to the head and partially threaded shanks in a four forming station forming machine, the tools being configured to work on wire stock as received at the first station of a diameter larger than or substantially the same as the roll diameter and not greater than the nominal diameter of the bolt, including at least two sequential head forming tools for mounting on the slide, an extrusion pointing tool for mounting on the die breast, a roll diameter extrusion tool for mounting on the die breast and a head support tool mountable in a station on the slide at multiple axial positions corresponding to standard lengths of the bolts being made, the head support tool being arranged to work at either the extrusion pointing station or the roll diameter extrusion station.
Description
- This application is a division of application Ser. No. 12/056,382, filed Mar. 27, 2008.
- The invention relates to cold-formed machine bolts and, in particular, methods and tooling for economically producing such machine bolts.
- Machine bolts are commonly made by producing a headed blank or preform in a progressive cold-forming or forging machine and, thereafter, rolling a thread on the shank of the blank. Typically, the shank end of the blank is chamfered so that when finished, the threaded bolt has a “point”, albeit blunt, that enables it to be self-centering with a threaded hole and thereby facilitate its final assembly.
- Conventionally, the cold-forming process can involve five progressive forming stations. Typically, the tooling for shaping at least the shank part of the blanks is dependent on the length of a bolt. Thus, the prior art number of forming stations and the use of length specific tooling makes the tooling for a full range of bolt lengths relatively expensive for a bolt manufacturer. Consequently, to limit tooling costs, it is not unusual for a manufacturer to produce only a limited number of bolt lengths for a given bolt size (diameter). As a result, the manufacturer may not achieve the greatest economy and a bolt distributor or high volume user may have to depend on more than one manufacturer to supply its needs. Frequently, the cold-forming tooling available to a manufacturer may be incapable of pointing the blank so that a second machining operation is required and attendant material, machine time and labor costs are incurred.
- The invention provides an exceptionally versatile tooling package for progressive forming machines capable of producing blanks for a full range of bolt lengths, all pointed, in four die stations. The number of tools or dies is greatly reduced compared to prior art practices, and can be applied to a four station header to produce a full range of pointed bolt lengths. This feat, which greatly reduces the number of tools, is accomplished in part by use of different fillers and/or a multi-position blank head supporting sleeve to axially position a tool or tools each at an appropriate one of multiple locations and thereby account for different blank lengths. More specifically, a complete set of forming tools can comprise a progressive series of cavities for forming and supporting the blank head and groups of tools for shaping the shanks of threaded to the head blanks or blanks with partially threaded shanks.
- The ability to use a four station machine, as afforded by the invention, rather than a five station machine, represents a significant reduction in tooling. Moreover, the disclosed methodology permits the use of some of the same tools to make hex flange bolts, hex head bolts, and socket head cap screws, thereby affording significant additional savings in tooling costs.
-
FIG. 1 is a cross-sectional view taken in a horizontal plane of a four station progressive cold-forging machine set up to make short threaded to the head hex flange bolts; -
FIG. 2 is a cross-sectional view taken in a horizontal plane of a four station progressive cold-forging machine set up to make long partially threaded hex flange bolts; -
FIG. 3 is a is a cross-sectional view taken in a horizontal plane of a four station progressive cold-forging machine set up to make full thread hex head bolts; -
FIG. 4 is a cross-sectional view taken in a horizontal plane of a four station progressive cold-forging machine set up to make partially threaded hex head bolts; -
FIG. 5 is a cross-sectional view taken in a horizontal plane of a four station progressive cold-forging machine set up to make short threaded to the head socket head cap screws; -
FIGS. 6 a-i are a series of partial sections of the third station of the forging machine set up to point blanks of different lengths in the process shown inFIG. 2 ; -
FIG. 7 is an exploded perspective view of a multi-position bolt head supporting sleeve and associated case and keys of the invention; -
FIG. 8 is a fragmentary cross-sectional view of the fourth station of the machine depicted inFIG. 1 , taken in a vertical plane, set up for pointing relatively short, threaded to the head hex flange head bolts; -
FIG. 9 is a view similar toFIG. 8 showing a set up for extruding the roll diameter of relatively long partially threaded hex flange head bolts; and -
FIG. 10 is an exploded perspective view of a hard plate and case assembly constructed in accordance with the invention. - A
cold forging machine 10 of generally conventional construction is represented by adie breast 11 and aslide 12 inFIGS. 1-5 . The illustratedmachine 10 has and the disclosed bolt forming processes uses four part forming or work stations 13-16. InFIGS. 1-5 , the slide orram 12 is shown in its forwardmost position where the opposed faces of the punch and die cases can be as close as 1 mm. - As mentioned above and explained in greater detail below, the invention offers a methodology for forming several popular styles of bolts in standard lengths, pointed and ready to be roll threaded, with a greatly reduced number of tools compared to that of previously used conventional methods. It will be understood that the tooling and process disclosed herein produce pointed bolt preforms or blanks that are subsequently finished in thread rolling dies, known in the art. These bolt preforms or blanks, as is customary in the industry, are sometimes simply called bolts herein, and this term is likewise applied herein to the parts being progressively formed.
- In the following written disclosure and drawings, like parts are identified with the same numerals. With reference to
FIG. 1 , themachine 10 receiveswire stock 18 at a cut offstation 19 where, during each cycle of theslide 12, a precise length ofmaterial 26, hereinafter referred to as a bolt, is severed by a pair ofshear plates 22, 23. A transfer of known design moves thebolt 26 from the cut offstation 19 to the successive work stations 13-16, each time theslide 12 reciprocates. -
FIG. 1 illustrates the progressive formation of pointed and eventually threaded to the head hex flange head bolts that, when rolled with a thread, can conform to the European standard DIN EN 1662, for example. When a bolt is removed from the last station in any of the bolt types disclosed herein, it will be finish headed, pointed, and ready for roll threading on a roll diameter on its shank. - When the slide or
ram 12 is retracted from its illustrated position, thebolt 26 is transferred to thefirst station 13, it being understood that any preceding bolts in the first and subsequent stations 14-16 are simultaneously indexed or transferred to the next station and eventually discharged after forming in the fourth orlast station 16. - The
bolt 26, in the sequence depicted inFIG. 1 , has its shank portion received in a die orinsert tool 27 on thedie breast 11 and its head portion initially upset in aninsert tool 28 on theslide 12 at thefirst station 13. The diameter of the wire supplied to the cut offstation 19 is substantially equal to, i.e. slightly smaller, e.g. a few thousandths of an inch, than the ideal or nominal roll or pitch diameter of a finished shank to account for any incidental growth in diameter in thefirst station 13 and subsequent stations 14-16. The nominal roll diameter at thefirst station 13 and subsequent stations 14-16 exists along the full length of the shank so that the part can be of the threaded to the head style of fastener. - The
bolt 26 is transferred to thesecond work station 14 during the next machine cycle. Here, a hex shape is extruded on the head of thebolt 26 by a pair oftools die breast 11 and slide 12, respectively. Next, thebolt 26 is transferred to thethird station 15 where a flange is formed between die andpunch tools bolt 26 is transferred to the fourth or last formingstation 16 where the flanged head is supported in asleeve 33 on theslide 12 and the distal end of the shank is pointed in an extrusion die 42. Aspring assembly 43 is disposed in thesleeve 33 and is effective in temporarily supporting thebolt 26 to facilitate transferring action.FIG. 8 illustrates theforth station 16 in a vertical cross-section on a somewhat enlarged scale overFIG. 1 . -
FIG. 7 illustrates thesleeve 33 in exploded relation to acase 44 in which it is selectively axially positioned in accordance with the length ofbolt 26 being produced. A forward face orsurface 46 of thesleeve 33 supports the head of thebolt 26 during the pointing or forming step at thefourth station 16 depicted inFIG. 1 . Both thesleeve 33 andcase 44 are generally cylindrical tubular bodies. An outside diameter orsurface 47 of thesleeve 33 is proportioned with a close fit to abore 48 of thecase 44. Theexterior 47 of thesleeve 33 is cut with pairs ofopposed chordal slots 51. Thecase 44 is similarly cut with pairs ofopposed chordal slots 52 that extend through the wall of the case. - The axial position of the
sleeve 33 in thecase 44 is fixed by a pair ofidentical keys 53 having chordal profiles. Outer circular orperipheral areas 56 of thekeys 53 have a radius that is essentially the same as the radius of the outer surface of thecylindrical case 44. The axial dimension of the major thickness of thekeys 53 provides a close fit with the axial length or width of thecase slots 52. At their central area, thekeys 53 havechordal webs 57 of an axial thickness half that of the outer or major parts of the keys and are sized to closely fit into the slots ornotches 51 in thesleeve 33. Preferably, the axial dimensions of thekey webs 57,key periphery 56,sleeve slots 51, sleeve slot axial spacings,case slots 52, and case slot spacings are all units or multiples of the increments that the standard bolts differ in length, e.g. 2, 4, or 5 mm. When tooling is set up to make a particular bolt length, thesleeve 33 is positioned in thecase 44 at a desired location, thekeys 53 are placed in whichever sleeve andcase slots FIG. 1 and 5 ) or 15 (FIGS. 3 and 4 ). By properly setting thesleeve 33 in thecase 44, standard length threaded to the head bolts can be produced using the same pointing die 42. - A bolt with a head having a hex shape or otherwise non-circular form should not rotate when being transferred from one station to another, so that the head will be angularly registered with the tools at the succeeding station. The risk of unwanted rotation, in accordance with the invention, is reduced by locking the part against such rotation, while it is being picked up by the transfer fingers, with a formation of a small diametral chisel edge or
projection 60 on the end face of knockout pins 61 in the relevant work stations. At various stations, aknockout pin 61 lies at the center line of a work station. Typically, the knockout pin extends through abore 65 inhard plate 62 mounted on thedie breast 11 and backing up or axially supporting the tooling against forming loads at the respective die station. With reference toFIG. 10 , the angular orientation or position of thehard plate 62 in acylindrical bore 63 of acircular case 64 is maintained, in accordance with the invention, byheadless set screws 66 received in axially oriented, threaded,semi-circular slots 67 in quadrature on its periphery and open to thebore 63. Thehard plate 62 has a complementary set of axially extendingsemi-circular slots 68 arranged, in quadrature, on its periphery to register with and complement theslots 67 in thebore 63. The associatedknockout pin 61 and, therefore, its chisel end face is maintained in a proper orientation with reference to thehard plate 62 by ashoe 69 biased by bevel springs 71 against an elongated flat 72 on a side of the knockout pin. Thesprings 71 andshoe 69 are retained in a radial bore 73 in thehard plate 62 by an axially orientedpin 74. Theshoe 69, bearing against the flat 72, allows thepin 61 to reciprocate but prevents rotation of the pin about its longitudinal axis. -
FIG. 2 illustrates the inventive process and tooling as applied to producing standard hex flange bolts, again under the European standard DIN EN 1662 where the standard lengths are greater than the standard threaded to the head lengths as discussed with respect toFIG. 1 above. Machine elements or parts that are the same or similar to that described in connection withFIG. 1 are identified with the same numerals here inFIG. 2 and, below, with reference toFIGS. 3 through 5 , and certain other figures. The sequence of transferring bolts discussed in reference toFIG. 1 , similarly, is the same for the tooling set ups inFIGS. 2 through 5 . Thebolt 76 begins successive heading, pointing, and roll diameter formation at thefirst work station 13 where it is upset to partially form the head with punch and dietools station 14, a hex shape is extruded on the head by cooperatingtools slide 12 and diebreast 11, respectively. In thethird work station 15, opposedtools 83 and 84 form the flange of the head in an upset action, and a tool or dieinsert 39 in a limited extrusion like action forms a point on the distal end of the bolt shank. - At the
fourth station 16 also depicted in a vertical cross-section inFIG. 9 , the distal end of the bolt shank is extruded in a die insert ortool 86 reducing its diameter to that of a roll diameter along a length corresponding to a standard thread length. The head of thebolt 76 at thisstation 16 is axially supported and driven by thesleeve 33 described above in connection withFIG. 7 . In the set-up ofFIG. 2 , thesleeve 33 is held by thekeys 53 towards the rear of thecase 44 such that the head and a significant portion of the shank is received in the case. The stepwise multiple positions of the sleeve, similar to its use in the process described in connection withFIG. 1 , allows asingle die insert 86 to be used to extrude the roll diameter on a plurality of lengths and preferably the full range of standard lengths of partially threaded bolts. - Returning to the discussion of the process at the
third station 15, differences in the lengths of bolts in a standard range are, in accordance with the invention, accounted for by axially shifting a pointing tool or insert in its respective case and/or substituting another insert with an incrementally different axial location of the pointing area or throat in the insert, the differences in location corresponding to differences in standard bolt lengths.FIGS. 6 a-i, illustrate these variations, thenumerals elements 34 are fillers of equal length. -
FIG. 3 illustrates the inventive process and tooling applied to making threaded to the head hex head screws or bolts such as conforming to European Standard DIN EN ISO 4017. Like the process shown inFIG. 1 , wire stock fed to the cut offstation 19 is slightly less than the nominal roll diameter of the finished blank. At thefirst station 13, abolt 91, with this near a roll diameter along substantially the full length of its shank, has its head initially coned or upset in punch and dietools second station 14, the head is further upset between punch and dietools bolt 91 is pointed in an extrusion like process in a die 96 on thedie breast 11 at thethird station 15. Differences in the lengths of hex head bolts are accounted for by themultiple position sleeve 33, optionally having its face modified to conform to the intermediate head profile of thebolt 91 at thisstation 15 with thecase 44 andkeys 53 as disclosed in connection with the set up ofFIG. 1 . Additionally, the die or insert 96 can be double ended and reversed end for end to change the axial location of the operative extrusion like pointing throat and thereby supplement the range of position adjustment offered by thesleeve 33 carried on theslide 12. The cross section of the head of thebolt 91 preferably produced in the first twostations fourth station 16, the head of thebolt 91 is trimmed into a hex betweenopposed tools - Referring to
FIG. 4 , conventional partially threaded hex head pointed bolts are made with the inventive process and tooling. Such bolts can conform to the DIN EN ISO 4014 standard. The head of abolt 101 is initially headed or coned at thefirst station 13 betweentools second station 14, the head is further upset bytools tool 39. The specific length of thebolt 101 is accounted for by using the dies, fillers, and techniques described in connection withFIGS. 2 and 6 with reference to the set up at the third station ofFIG. 2 . The roll diameter of thebolt 101 is extruded on the shank at thethird station 15 in a tool or insert 86 which can be the same tool as used in the set up ofFIG. 2 at thefourth station 16. Variations in the length of thebolt 101 can be accommodated by themulti-position sleeve 33 as explained above. The head of thebolt 101 is trimmed to a hex shape at the fourth station bytools -
FIG. 5 illustrates the method and tooling by which the invention produces threaded to the head sockethead cap screws 111 such as specified in the DIN EN ISO 4762 standard. Again, like the processes shown inFIGS. 1 and 3 , wire stock fed to the cut offstation 19 is slightly less than the nominal roll diameter of the finished blank to account for incidental growth in diameter at the work stations 12-16. Thebolt 111 with the near roll diameter along its shank has its head initially upset in thefirst station 13 in die and punchtools second station 14, thebolt 111 is progressively formed by further upsetting the head intools third station 15, the bolt head is fully upset and formed with an internal hexagonal blind hole with punch and dietools last station 16, the part is forced into a die tool the same as or like thetool 42 used on the last die station illustrated inFIG. 1 . As inFIG. 1 , thesleeve 33 or an equivalent thereof can be appropriately positioned in thecase 44 on the slide in thelast station 16 to account for differences in the lengths of thebolts 111 being produced. - While the invention has been shown and described with respect to particular embodiments thereof, this is for the purpose of illustration rather than limitation, and other variations and modifications of the specific embodiments herein shown and described will be apparent to those skilled in the art all within the intended spirit and scope of the invention. Accordingly, the patent is not to be limited in scope and effect to the specific embodiments herein shown and described nor in any other way that is inconsistent with the extent to which the progress in the art has been advanced by the invention.
Claims (10)
1-4. (canceled)
5. A tool assembly for axially supporting the head of a bolt being formed in a forging machine comprising a central body having a face arranged to abut the bolt head and a carrier for locating the central body at multiple axially spaced locations corresponding to differences of lengths of standard bolts being made by the tool.
6. A tool assembly as set forth in claim 5 , wherein said carrier is a circular case that surrounds at least a portion of the central body.
7. A tool assembly as set forth in claim 6 , wherein the circular case has a series of axially spaced surfaces arranged to locate said central circular body at said multiple locations.
8. A tool assembly as set forth in claim 7 , wherein said central body has a series of axially spaced surfaces arranged to locate said central body at said multiple locations.
9. A tool assembly as set forth in claim 8 , including a key arranged to fit both said case spaced surfaces and body surfaces to lock said body in a selected axial location.
10. A tool assembly as set forth in claim 9 , wherein said key is reversible between two orientations and is configured while residing in an axial location relative to one of the body and case to hold said body in two different locations on the forging machine depending on its orientation.
11-13. (canceled)
14. A progressive forging machine having a die breast with a plurality of die stations for receiving parts being progressively formed in the machine, a tool case in at least one of said die stations, a kick out pin for ejecting a part from said one die station, the kick out pin having a longitudinal axis and a forward end with a formation capable of rotationally interlocking with a part received in said one die station, a hard plate disposed at the rear of said tool case arranged to sustain axial forming loads on tooling in said case, said kick out pin extending through said hard plate, said hard plate including a restraining surface arranged to permit said kick out pin to move longitudinally while restraining it from rotation about a longitudinal axis, and instrumentalities to lock said hard plate relative to said tool case against rotation about an axis parallel to said longitudinal axis of said kick out pin.
15. A progressive forging machine as set forth in claim 14 , including a set screw in parallel alignment with said longitudinal axis and engaged with both said tool case and said hard plate.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/937,270 US20140157855A1 (en) | 2008-03-27 | 2013-07-09 | Tooling for headed pilot pointed bolts |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/056,382 US8485013B2 (en) | 2008-03-27 | 2008-03-27 | Method and tooling for headed pilot pointed bolts |
US13/937,270 US20140157855A1 (en) | 2008-03-27 | 2013-07-09 | Tooling for headed pilot pointed bolts |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/056,382 Division US8485013B2 (en) | 2008-03-27 | 2008-03-27 | Method and tooling for headed pilot pointed bolts |
Publications (1)
Publication Number | Publication Date |
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US20140157855A1 true US20140157855A1 (en) | 2014-06-12 |
Family
ID=41114699
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/056,382 Expired - Fee Related US8485013B2 (en) | 2008-03-27 | 2008-03-27 | Method and tooling for headed pilot pointed bolts |
US13/937,270 Abandoned US20140157855A1 (en) | 2008-03-27 | 2013-07-09 | Tooling for headed pilot pointed bolts |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/056,382 Expired - Fee Related US8485013B2 (en) | 2008-03-27 | 2008-03-27 | Method and tooling for headed pilot pointed bolts |
Country Status (8)
Country | Link |
---|---|
US (2) | US8485013B2 (en) |
KR (1) | KR20100127793A (en) |
CN (1) | CN101977708B (en) |
BR (1) | BRPI0908587A2 (en) |
RU (1) | RU2010143879A (en) |
TR (1) | TR201007789T1 (en) |
TW (1) | TW200940205A (en) |
WO (1) | WO2009120821A2 (en) |
Cited By (1)
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---|---|---|---|---|
CN104493043A (en) * | 2014-12-24 | 2015-04-08 | 舟山市7412工厂 | Cold heading punching die |
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FR2937568B1 (en) * | 2008-10-24 | 2011-12-23 | Rdo Alpha | METHOD FOR MANUFACTURING A BOLT PART, TOOL FOR IMPLEMENTING THE METHOD, DEVICE FOR TIGHTENING AND BLEEDING SUCH A BOLT PART |
CN101829756B (en) * | 2010-06-17 | 2012-07-25 | 鹏驰五金制品有限公司 | Cutting-free forming die of expansion anchor bolt |
CN101927296A (en) * | 2010-07-15 | 2010-12-29 | 宏茂五金(昆山)有限公司 | Hexagon bolt head one-time forming mold |
CN102357642B (en) * | 2011-08-22 | 2013-09-11 | 中山安铂尔电器有限公司 | Automatic stud riveting machine |
KR101429757B1 (en) * | 2012-09-19 | 2014-08-12 | 박세웅 | Forging Apparatus |
CN103909207B (en) * | 2012-12-29 | 2015-11-18 | 宾科汽车紧固件(昆山)有限公司 | Up-down adjustment bolt cold-heading device and cold heading technique thereof |
CN105269246A (en) * | 2014-06-09 | 2016-01-27 | 上海申光高强度螺栓有限公司 | Machining method and machining mold assembly for hexagonal bolt |
JP6536450B2 (en) * | 2016-03-30 | 2019-07-03 | 株式会社デンソー | Multistage horizontal forging machine |
US10160034B2 (en) * | 2017-01-30 | 2018-12-25 | National Machinery Llc | Sideways forming |
CN107639195A (en) * | 2017-09-28 | 2018-01-30 | 中国航空工业标准件制造有限责任公司 | One mould two rushes the assembling die that type is made in the continuous upsetting of hexagon-headed bolt |
KR102036992B1 (en) * | 2018-03-26 | 2019-10-25 | 정재석 | Forged press apparatus equipped with ejector clamping device |
CN108941410A (en) * | 2018-06-12 | 2018-12-07 | 如皋市力星滚子科技有限公司 | Cold header composable mold and its Cold header |
CN109079084B (en) * | 2018-09-28 | 2023-08-15 | 嘉善宝岛模具厂(普通合伙) | Cold upsetting and cold forging forming die for connecting fork or joint fork and forming process thereof |
JP7115274B2 (en) * | 2018-12-10 | 2022-08-09 | 日本製鉄株式会社 | Cold forging method and cold forging equipment |
CN113843380B (en) * | 2021-09-27 | 2023-08-15 | 海盐县机械有限公司 | Thread rolling machine |
CN115156462B (en) * | 2022-09-05 | 2022-11-25 | 常州市武进大众标准件有限公司 | Cold heading die for automobile bolt and bolt manufacturing method thereof |
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JPS56111540A (en) | 1980-02-12 | 1981-09-03 | Sannohashi Seisakusho:Kk | Production of bolt of long free upseeting length |
WO1993017814A1 (en) * | 1992-03-13 | 1993-09-16 | Wera Werk Hermann Werner Gmbh & Co. | Process and device for producing cross-head screwing tools or the like, especially in the form of bits |
JPH0753793Y2 (en) | 1992-03-30 | 1995-12-13 | 株式会社アプト | Mold device in forging machine |
JP2739707B2 (en) | 1994-11-17 | 1998-04-15 | 株式会社阪村機械製作所 | Multistage forging machine |
US5657663A (en) | 1995-05-16 | 1997-08-19 | Kabushiki Kaisha Sakamura Kikai Seisakusho | Multi-stage forging apparatus |
US5704245A (en) * | 1996-05-31 | 1998-01-06 | The National Machinery Company | Progressive forging machine with individually adjustable tools |
JP2000061575A (en) | 1998-08-21 | 2000-02-29 | Minamida:Kk | Production of energy absorption shaft for seat belt |
JP4493135B2 (en) * | 2000-01-06 | 2010-06-30 | 勝行 戸津 | Screw and driver bit combination |
-
2008
- 2008-03-27 US US12/056,382 patent/US8485013B2/en not_active Expired - Fee Related
- 2008-10-28 TW TW097141272A patent/TW200940205A/en unknown
-
2009
- 2009-03-26 WO PCT/US2009/038331 patent/WO2009120821A2/en active Application Filing
- 2009-03-26 CN CN2009801100644A patent/CN101977708B/en not_active Expired - Fee Related
- 2009-03-26 KR KR1020107021272A patent/KR20100127793A/en not_active Application Discontinuation
- 2009-03-26 BR BRPI0908587A patent/BRPI0908587A2/en not_active IP Right Cessation
- 2009-03-26 TR TR2010/07789T patent/TR201007789T1/en unknown
- 2009-03-26 RU RU2010143879/02A patent/RU2010143879A/en not_active Application Discontinuation
-
2013
- 2013-07-09 US US13/937,270 patent/US20140157855A1/en not_active Abandoned
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104493043A (en) * | 2014-12-24 | 2015-04-08 | 舟山市7412工厂 | Cold heading punching die |
Also Published As
Publication number | Publication date |
---|---|
CN101977708B (en) | 2013-07-10 |
BRPI0908587A2 (en) | 2015-09-15 |
US20090247310A1 (en) | 2009-10-01 |
KR20100127793A (en) | 2010-12-06 |
CN101977708A (en) | 2011-02-16 |
WO2009120821A2 (en) | 2009-10-01 |
TR201007789T1 (en) | 2011-10-21 |
US8485013B2 (en) | 2013-07-16 |
TW200940205A (en) | 2009-10-01 |
RU2010143879A (en) | 2012-05-10 |
WO2009120821A3 (en) | 2010-01-07 |
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Date | Code | Title | Description |
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STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |
|
AS | Assignment |
Owner name: FIFTH THIRD BANK, OHIO Free format text: SECURITY INTEREST;ASSIGNOR:NATIONAL MACHINERY LLC;REEL/FRAME:043322/0600 Effective date: 20170802 |