EP1166916A2 - Reciprocating type thread rolling apparatus - Google Patents
Reciprocating type thread rolling apparatus Download PDFInfo
- Publication number
- EP1166916A2 EP1166916A2 EP01114156A EP01114156A EP1166916A2 EP 1166916 A2 EP1166916 A2 EP 1166916A2 EP 01114156 A EP01114156 A EP 01114156A EP 01114156 A EP01114156 A EP 01114156A EP 1166916 A2 EP1166916 A2 EP 1166916A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- thread rolling
- ram
- dies
- moving
- 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.)
- Withdrawn
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
- B21H3/00—Making helical bodies or bodies having parts of helical shape
- B21H3/02—Making helical bodies or bodies having parts of helical shape external screw-threads ; Making dies for thread rolling
- B21H3/06—Making by means of profiled members other than rolls, e.g. reciprocating flat dies or jaws, moved longitudinally or curvilinearly with respect to each other
Definitions
- the invention relates to an apparatus for rolling a thread (hereinafter referred to as thread rolling) mounting thereon a flat die composed of a stationary die and a reciprocating moving die.
- a flat die type thread rolling apparatus for performing thread rolling by means of a moving die mounted on a reciprocating ram and a stationary die mounted on a base causes a problem that productivity is low since the moving die is reciprocated to subject one bolt stock to thread rolling.
- the inventors of the present application have devised a thread rolling apparatus, in which flat dies composed of a stationary die and a moving die are arranged in a zigzag manner with a ram therebetween, as disclosed in Japanese Provisional Patent Publication No. 11-151545.
- one of the flat dies can perform thread rolling when the ram advances, and the other of the flat dies can perform thread rolling when the ram retreats, and thus thread rolling can be applied on two bolt stocks in one reciprocation of the ram to considerably enhance productivity.
- Thread rolling load is acted on the ram at the time of thread rolling. Since the thread rolling pressure bearing block is divided into two halves, which are small in pressure receiving area to be insufficient in rigidity to be liable to cause backward bending deformation on the ram, thus resulting in a degraded accuracy of threads as formed.
- the set-up work is performed on the stationary die at the time of thread rolling. Since the flat dies are arranged in a zigzag manner, it is necessary to move to the opposite side, which makes workability worse.
- the invention has been devised to solve the above-mentioned problems of the prior art and to provide a reciprocating type thread rolling apparatus, which involves high accuracy for threads and favorable workability at the time of setting-up and which does not require any large setting-up adjusting space.
- a reciprocating type thread rolling apparatus comprises a ram reciprocated by a crank shaft and fixing to one side thereof at least two moving dies, the other side of the ram being disposed along a single thread rolling pressure bearing block, and stationary dies adapted to pair with the moving dies for thread rolling, the stationary dies being the same in number as that of the moving dies and disposed to be opposite to the moving dies.
- Fig. 1 is a plan view showing an embodiment of the invention.
- Fig. 2 is a plan view showing another embodiment of the invention.
- Fig. 3 is a plan view showing a still further embodiment of the invention.
- Fig. 1 shows an embodiment of the invention, the reference numeral 1 denoting a drive mechanism provided on a base 2, the drive mechanism comprising a pulley 3 driven through a belt by a motor (not shown) or the like, a small gear 4 mounted on a shaft of the pulley, and a large gear 5 for meshing with the small gear.
- a connecting rod 6 for converting torque of the large gear into reciprocation of a ram 7 is pivoted at one end thereof in an eccentric position on a side of the large gear, and at the other end thereof on the ram.
- the reference numeral 9 denotes a flat die composed of stationary dies 9a, 9b, which are detachably mounted on the base 2 on the same side of the ram 7 through die block bearing frames 19a, 19b.
- the reference numeral 10 denotes a flat die composed of moving dies 10a, 10b, which are detachably mounted on one side of the ram 7 to face the stationary dies (the moving die 10a pairs with the stationary die 9a while the moving die 10b pairs with the stationary die 9b.
- two sets of the stationary die and the moving die are shown in the figure, they may be suitably set taking account of freedom in arrangement of the apparatus, manufacturing cost of the ram, weight of the apparatus, and the like. The same may be said of the rest.).
- a single thread rolling pressure bearing block 11 for preventing backward bending deformation of the ram 7 at the time of thread rolling is mounting to the base 2 on an opposite surface of the ram 7 to a surface, on which the moving dies 10a, 10b are mounted, whereby the block bears thread rolling pressure acting on the ram.
- the respective sets (9a, 10a), (9b, 10b) of the stationary die and the moving die are arranged to be shifted in phase in such a manner that thread rolling is alternately carried out with reciprocation of the ram 7. That is, the respective sets of the flat die do not perform thread rolling at the same time but one of the sets terminates thread rolling and performs returning action when the other of the sets performs thread rolling. In other words, one of the sets is located in the thread rolling terminating position when the other of the sets is located in the thread rolling beginning position. This suppresses deformation of the ram 7 caused by the thread rolling pressure at the time of thread rolling and prevents degradation in thread rolling accuracy and an increase in load on the motor.
- the reference numerals 12, 13 denote part feeders, which impart vibrations to bolt stocks being later on subjected to thread rolling to successively align the bolt stocks having been regulated in position to feed the same one by one to guide rails 14, 15 and which are arranged on one side of the ram in the same manner as the stationary die.
- the reference numerals 16, 17 denote projection plates having tip ends thereof facing outlets of the guide rails 14, 15 and serving to feed the bolt stocks, having reached to the outlets of the guide rails, between a set of the moving die 10a and the stationary die 9a and a set of the moving die 10b and the stationary die 9b, which are in a state prior to thread rolling.
- the reference numerals 18a, 18b denote upper covers for preventing floating of the ram in a motion (advancing motion), in which the connecting rod 6 pushes the ram 7 and for adjusting sliding accuracy of the ram (the ram 7 moves while the upper surface thereof is sliding on the inner surfaces of the upper covers).
- Fig. 2 shows another embodiment of the invention, in which the part feeders 12, 13 disposed adjacent to each other in the previous embodiment are disposed in somewhat spaced positions (the other arrangement is the same as that shown in Fig. 1).
- the ram 7 is single and lengthy.
- the ram 7 is made single and lengthy, and the single thread rolling pressure bearing block 11 is arranged on the opposite surface of the ram 7 to a surface, on which the moving dies 10a, 10b are mounted, whereby backward bending deformation of the ram 7 at the time of thread rolling is prevented and accuracy of threads manufactured in thread rolling can be kept high.
- the ram is great in weight (in addition, the weight increases as the number of sets of the dies increases), the drive mechanism must have a larger capacity. Since the ram is large in length (the relationship with the number of sets of the dies is the same as the weight), it is necessary to pay attention to maintaining machining accuracy of the ram. Also, since the ram is small in specific surface area, it is necessary to pay attention to favorable radiation of frictional heat.
- the ram 7a in the embodiment shown in Fig. 3 be made a idle ram (on one side of which the moving die 10a is not arranged and which is used as a simple drive force transmitting member. Accordingly, the ram in this embodiment is not required to have a length as long as that of the ram 7a shown therein), and the remaining ram 7b be constructed in the same manner as the ram 7 shown in Fig. 1 or Fig. 2 is, or further divided like the rams 7a, 7b in the embodiment shown in Fig. 3.
- Reciprocation of the ram causes the moving dies 10a, 10b mounted on one side of the ram to pair (10a and 9a; 10b and 9b) with the mating stationary dies 9a, 9b, so that the respective sets of the dies can alternately perform thread rolling.
- the ram 7 is in a most retreated position, the set of the stationary die 9a and the moving die 10a on the right side being in a state, in which thread rolling has been completed, and the set of the stationary die 9b and the moving die 10b on the left side being in a thread rolling start state, in which thread rolling can be performed when the ram 7 advances subsequently. Also, with the embodiment shown in Fig.
- the ram 7 is in a most advanced position, the set of the stationary die 9a and the moving die 10a on the right side being in a state, in which thread rolling has been completed, and the set of the stationary die 9b and the moving die 10b on the left side being in a thread rolling start state, in which thread rolling can be performed when the ram 7 retreats subsequently.
- thread rolling can be performed at either of advancing and retreating of the ram 7 by varying the relative positional relationship between the stationary dies 9a, 9b and the moving dies 10a, 10b, and positions of the part feeders 12, 13, and thread rolling of two bolt stocks can be simultaneously performed in one stroke.
- thread rolling can preferably be performed at high speed (productivity is two times a conventional one) when anti-slipping serrations (not shown) are provided on that side of thread formation surfaces of the stationary dies 9a, 9b and the moving dies 10a, 10b, at which thread rolling is started, to improve seizure of bolt stocks being subjected to thread rolling.
- speed of thread rolling is reduced to about a half of a conventional one, bolt stocks can surely bite the dies even without any serrations on the thread rolling starting side of the thread formation surfaces, thus making it possible to manufacture bolts with high accuracy and pretty threaded surfaces as formed (in this case, the volume of production is approximately the same as that in the prior art).
- reciprocating type thread rolling apparatus according to the invention has been described by way of a bolt stock, it goes without saying that the reciprocating type thread rolling apparatus according to the invention can apply thread rolling on screws such as wood screws, tapping screws and the like.
- thread rolling can be again performed at non-used portions by turning the worn dies 9, 10 upside down for mounting, which doubles the life of the dies to enable achieving cutting-down of cost for dies by half.
- the ram adapted to be reciprocated by the crank shaft is arranged along the single thread rolling pressure bearing block and caused to slide on the side surface of the thread rolling pressure bearing block, whereby adequate rigidity can be ensured and thread rolling can be performed at high accuracy.
- the moving dies adapted to pair with the stationary dies for thread rolling are arranged on the same side of the ram, whereby the need of moving to an opposite side at the time of setting-up is eliminated to make workability favorable, and the need of providing a setting-up regulating space on the opposite side is eliminated to enable making a work space smaller than that in the prior art.
- thread rolling can be again performed at non-used portions of the die by turning the worn die upside down for mounting, which doubles the life of the die to enable achieving cutting-down of cost for the die by half.
Abstract
Description
- The invention relates to an apparatus for rolling a thread (hereinafter referred to as thread rolling) mounting thereon a flat die composed of a stationary die and a reciprocating moving die.
- Conventionally, a flat die type thread rolling apparatus for performing thread rolling by means of a moving die mounted on a reciprocating ram and a stationary die mounted on a base causes a problem that productivity is low since the moving die is reciprocated to subject one bolt stock to thread rolling. Hereupon, the inventors of the present application have devised a thread rolling apparatus, in which flat dies composed of a stationary die and a moving die are arranged in a zigzag manner with a ram therebetween, as disclosed in Japanese Provisional Patent Publication No. 11-151545. More specifically, with the apparatus, one of the flat dies can perform thread rolling when the ram advances, and the other of the flat dies can perform thread rolling when the ram retreats, and thus thread rolling can be applied on two bolt stocks in one reciprocation of the ram to considerably enhance productivity.
- However, it has proved that the thread rolling apparatus, in which the flat dies are arranged in a zigzag manner with the ram therebetween, involves the following defects.
- Thread rolling load is acted on the ram at the time of thread rolling. Since the thread rolling pressure bearing block is divided into two halves, which are small in pressure receiving area to be insufficient in rigidity to be liable to cause backward bending deformation on the ram, thus resulting in a degraded accuracy of threads as formed.
- Commonly, the set-up work is performed on the stationary die at the time of thread rolling. Since the flat dies are arranged in a zigzag manner, it is necessary to move to the opposite side, which makes workability worse.
- Since there is a need of setting-up spaces on the opposite side at the time of bolt thread rolling, there must be a large work space.
- The invention has been devised to solve the above-mentioned problems of the prior art and to provide a reciprocating type thread rolling apparatus, which involves high accuracy for threads and favorable workability at the time of setting-up and which does not require any large setting-up adjusting space.
- That is, a reciprocating type thread rolling apparatus according to the invention comprises a ram reciprocated by a crank shaft and fixing to one side thereof at least two moving dies, the other side of the ram being disposed along a single thread rolling pressure bearing block, and stationary dies adapted to pair with the moving dies for thread rolling, the stationary dies being the same in number as that of the moving dies and disposed to be opposite to the moving dies.
- Fig. 1 is a plan view showing an embodiment of the invention.
- Fig. 2 is a plan view showing another embodiment of the invention.
- Fig. 3 is a plan view showing a still further embodiment of the invention.
-
- 1
- : drive mechanism
- 2
- : base
- 3
- : pulley
- 4
- : small gear
- 5
- : large gear
- 6
- : connecting rod
- 7, 7a, 7b
- : ram
- 8
- : connecting member
- 9, 10
- : flat die
- 9a, 9b
- : stationary die
- 10a, 10b
- : moving die
- 11
- : thread rolling pressure bearing block
- 12, 13
- : part feeder
- 14, 15
- : guide rail
- 16, 17
- : projection plate
- 18a, 18b
- : upper cover
- 19a, 19b
- : die block bearing frame
- The invention will be described below in detail with reference to the drawings, in which typical embodiments of the invention are shown.
- Fig. 1 shows an embodiment of the invention, the
reference numeral 1 denoting a drive mechanism provided on abase 2, the drive mechanism comprising apulley 3 driven through a belt by a motor (not shown) or the like, asmall gear 4 mounted on a shaft of the pulley, and alarge gear 5 for meshing with the small gear. - A connecting
rod 6 for converting torque of the large gear into reciprocation of aram 7 is pivoted at one end thereof in an eccentric position on a side of the large gear, and at the other end thereof on the ram. - The
reference numeral 9 denotes a flat die composed ofstationary dies 9a, 9b, which are detachably mounted on thebase 2 on the same side of theram 7 through dieblock bearing frames reference numeral 10 denotes a flat die composed of movingdies ram 7 to face the stationary dies (the movingdie 10a pairs with thestationary die 9a while the movingdie 10b pairs with the stationary die 9b. In addition, while two sets of the stationary die and the moving die are shown in the figure, they may be suitably set taking account of freedom in arrangement of the apparatus, manufacturing cost of the ram, weight of the apparatus, and the like. The same may be said of the rest.). - A single thread rolling
pressure bearing block 11 for preventing backward bending deformation of theram 7 at the time of thread rolling is mounting to thebase 2 on an opposite surface of theram 7 to a surface, on which the movingdies - The respective sets (9a, 10a), (9b, 10b) of the stationary die and the moving die are arranged to be shifted in phase in such a manner that thread rolling is alternately carried out with reciprocation of the
ram 7. That is, the respective sets of the flat die do not perform thread rolling at the same time but one of the sets terminates thread rolling and performs returning action when the other of the sets performs thread rolling. In other words, one of the sets is located in the thread rolling terminating position when the other of the sets is located in the thread rolling beginning position. This suppresses deformation of theram 7 caused by the thread rolling pressure at the time of thread rolling and prevents degradation in thread rolling accuracy and an increase in load on the motor. - The reference numerals 12, 13 denote part feeders, which impart vibrations to bolt stocks being later on subjected to thread rolling to successively align the bolt stocks having been regulated in position to feed the same one by one to guide
rails die 10a and thestationary die 9a and a set of the movingdie 10b and the stationary die 9b, which are in a state prior to thread rolling. - In addition, the reference numerals 18a, 18b denote upper covers for preventing floating of the ram in a motion (advancing motion), in which the connecting
rod 6 pushes theram 7 and for adjusting sliding accuracy of the ram (theram 7 moves while the upper surface thereof is sliding on the inner surfaces of the upper covers). - Fig. 2 shows another embodiment of the invention, in which the
part feeders - In the embodiments shown in Figs. 1 and 2, the
ram 7 is single and lengthy. Thus theram 7 is made single and lengthy, and the single thread rollingpressure bearing block 11 is arranged on the opposite surface of theram 7 to a surface, on which the moving dies 10a, 10b are mounted, whereby backward bending deformation of theram 7 at the time of thread rolling is prevented and accuracy of threads manufactured in thread rolling can be kept high. Meanwhile, since the ram is great in weight (in addition, the weight increases as the number of sets of the dies increases), the drive mechanism must have a larger capacity. Since the ram is large in length (the relationship with the number of sets of the dies is the same as the weight), it is necessary to pay attention to maintaining machining accuracy of the ram. Also, since the ram is small in specific surface area, it is necessary to pay attention to favorable radiation of frictional heat. - The matters, to which attention is paid, in the embodiments shown in Figs. 1 and 2 are taken into account in an embodiment shown in Fig. 3, in which the
ram 7 is divided into tworams member 8. The remaining construction is the same as that shown in Fig. 1). However, it is necessary in this embodiment to take measure of suppressing an increased backward bending deformation of the rams, in particular, theram 7a (for example, strengthening of the upper cover 18a and strict adjustment of a clearance between the ram and the upper cover). - In addition, as a measure to positively avoid influences caused by floating of the ram at the time of advancement of the ram (leftward motion in the figure), it is proposed that the
ram 7a in the embodiment shown in Fig. 3 be made a idle ram (on one side of which the movingdie 10a is not arranged and which is used as a simple drive force transmitting member. Accordingly, the ram in this embodiment is not required to have a length as long as that of theram 7a shown therein), and the remainingram 7b be constructed in the same manner as theram 7 shown in Fig. 1 or Fig. 2 is, or further divided like therams - With the reciprocating type thread rolling apparatus thus constructed, when bolt stocks are fed to the
part feeders base 2 is driven, thelarge gear 5 is caused to start rotation through rotation of thepulley 3 and hence rotation of thesmall gear 4 mounted on the shaft of the pulley. With rotation of thelarge gear 5, the connectingrod 6, one end of which is pivoted in the eccentric position on the side of the large gear, performs crank motion to reciprocate (rightward and leftward movements in the figure) theram 7, to which the other end of the connecting rod is pivoted. Reciprocation of the ram causes the moving dies 10a, 10b mounted on one side of the ram to pair (10a and 9a; 10b and 9b) with the mating stationary dies 9a, 9b, so that the respective sets of the dies can alternately perform thread rolling. - With the embodiments shown in Figs. 1 and 3, the
ram 7 is in a most retreated position, the set of thestationary die 9a and the movingdie 10a on the right side being in a state, in which thread rolling has been completed, and the set of the stationary die 9b and the movingdie 10b on the left side being in a thread rolling start state, in which thread rolling can be performed when theram 7 advances subsequently. Also, with the embodiment shown in Fig. 2, theram 7 is in a most advanced position, the set of thestationary die 9a and the movingdie 10a on the right side being in a state, in which thread rolling has been completed, and the set of the stationary die 9b and the movingdie 10b on the left side being in a thread rolling start state, in which thread rolling can be performed when theram 7 retreats subsequently. In this manner, thread rolling can be performed at either of advancing and retreating of theram 7 by varying the relative positional relationship between the stationary dies 9a, 9b and the moving dies 10a, 10b, and positions of thepart feeders - Also, thread rolling can preferably be performed at high speed (productivity is two times a conventional one) when anti-slipping serrations (not shown) are provided on that side of thread formation surfaces of the stationary dies 9a, 9b and the moving dies 10a, 10b, at which thread rolling is started, to improve seizure of bolt stocks being subjected to thread rolling. On the other hand, when speed of thread rolling is reduced to about a half of a conventional one, bolt stocks can surely bite the dies even without any serrations on the thread rolling starting side of the thread formation surfaces, thus making it possible to manufacture bolts with high accuracy and pretty threaded surfaces as formed (in this case, the volume of production is approximately the same as that in the prior art).
- In addition, while the reciprocating type thread rolling apparatus according to the invention has been described by way of a bolt stock, it goes without saying that the reciprocating type thread rolling apparatus according to the invention can apply thread rolling on screws such as wood screws, tapping screws and the like.
- Also, in the case where a longitudinally oriented flat die is used and a length of thread rolling is smaller than a half of a width of the flat dies 9, 10, thread rolling can be again performed at non-used portions by turning the worn dies 9, 10 upside down for mounting, which doubles the life of the dies to enable achieving cutting-down of cost for dies by half.
- As described above, with the reciprocating type thread rolling apparatus according to the invention, the ram adapted to be reciprocated by the crank shaft is arranged along the single thread rolling pressure bearing block and caused to slide on the side surface of the thread rolling pressure bearing block, whereby adequate rigidity can be ensured and thread rolling can be performed at high accuracy. Also, the moving dies adapted to pair with the stationary dies for thread rolling are arranged on the same side of the ram, whereby the need of moving to an opposite side at the time of setting-up is eliminated to make workability favorable, and the need of providing a setting-up regulating space on the opposite side is eliminated to enable making a work space smaller than that in the prior art. Further, in the case where a longitudinally oriented flat die is used and a length of thread rolling is smaller than a half of a width of the flat die, thread rolling can be again performed at non-used portions of the die by turning the worn die upside down for mounting, which doubles the life of the die to enable achieving cutting-down of cost for the die by half.
Claims (4)
- A reciprocating type thread rolling apparatus comprising a ram 7 reciprocated by a crank shaft and fixing to one side thereof at least two moving dies 10a, 10b, the other side of the ram being disposed along a single thread rolling pressure bearing block, and stationary dies 9a, 9b adapted to pair with the moving dies for thread rolling, the stationary dies being the same in number as that of the moving dies and disposed to be opposite to the moving dies.
- The reciprocating type thread rolling apparatus according to claim 1, wherein the ram 7 is divided into at least two rams 7a, 7b and the moving dies 10a, 10b, respectively, are arranged on the respective rams.
- The reciprocating type thread rolling apparatus according to claim 1 or 2, wherein the moving die 10a is not arranged on the ram 7a and the at least two moving dies 10a, 10b are arranged on the ram 7b.
- The reciprocating type thread rolling apparatus according to claim 2 or 3, wherein the ram 7b is further divided into at least two rams, and the moving dies 10a, 10b are arranged on each of the rams as divided.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1766372000 | 2000-06-13 | ||
JP2000176637A JP2001353547A (en) | 2000-06-13 | 2000-06-13 | Reciprocal screw form rolling device |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1166916A2 true EP1166916A2 (en) | 2002-01-02 |
EP1166916A3 EP1166916A3 (en) | 2003-02-12 |
Family
ID=18678341
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01114156A Withdrawn EP1166916A3 (en) | 2000-06-13 | 2001-06-11 | Reciprocating type thread rolling apparatus |
Country Status (3)
Country | Link |
---|---|
US (1) | US20020013178A1 (en) |
EP (1) | EP1166916A3 (en) |
JP (1) | JP2001353547A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2016160464A3 (en) * | 2015-03-31 | 2016-11-24 | Illinois Tool Works Inc. | Multi-station reciprocating die roll forming machine and method of patterning blanks |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101596570B (en) * | 2009-05-18 | 2012-06-27 | 钟伟杰 | Thread rolling machine device capable of automatically tapping two groups of bolts synchronously |
KR101259411B1 (en) | 2011-01-20 | 2013-04-30 | 주식회사 태정기공 | Form rolling mill device |
JP6431040B2 (en) * | 2013-03-21 | 2018-11-28 | イリノイ トゥール ワークス インコーポレイティド | Roll forming machine with reciprocating dies |
US20140283570A1 (en) * | 2013-03-22 | 2014-09-25 | Form G. Tech Co. | Roll die |
WO2015091433A1 (en) * | 2013-12-20 | 2015-06-25 | Tetra Laval Holdings & Finance S.A. | Spray monitoring system and spray monitoring method |
US10722934B2 (en) * | 2016-08-26 | 2020-07-28 | Vey Manufacturing Technologies LLC | Thread rolling assembly |
JP7286076B2 (en) * | 2018-08-27 | 2023-06-05 | ベイ マニュファクチャリング テクノロジーズ エルエルシー | Locating and clamping system for thread rolling |
CN116532595B (en) * | 2023-06-05 | 2023-09-26 | 江苏宁欣汽车零部件有限公司 | Screw thread processing equipment for manufacturing fastener bolt |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2262698A (en) * | 1939-06-12 | 1941-11-11 | Pelland Herve | Thread rolling machine |
GB717360A (en) * | 1952-05-12 | 1954-10-27 | Guest Keen & Nettlefolds Ltd | Improvements in or relating to machines for rolling screwthreads |
JPH05245572A (en) * | 1992-03-04 | 1993-09-24 | Asia Giken Kogyo Kk | Thread rolling method |
JPH11151545A (en) * | 1997-11-18 | 1999-06-08 | Aoyama Seisakusho Co Ltd | Screw form rolling device |
-
2000
- 2000-06-13 JP JP2000176637A patent/JP2001353547A/en active Pending
-
2001
- 2001-06-07 US US09/876,777 patent/US20020013178A1/en not_active Abandoned
- 2001-06-11 EP EP01114156A patent/EP1166916A3/en not_active Withdrawn
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2262698A (en) * | 1939-06-12 | 1941-11-11 | Pelland Herve | Thread rolling machine |
GB717360A (en) * | 1952-05-12 | 1954-10-27 | Guest Keen & Nettlefolds Ltd | Improvements in or relating to machines for rolling screwthreads |
JPH05245572A (en) * | 1992-03-04 | 1993-09-24 | Asia Giken Kogyo Kk | Thread rolling method |
JPH11151545A (en) * | 1997-11-18 | 1999-06-08 | Aoyama Seisakusho Co Ltd | Screw form rolling device |
Non-Patent Citations (2)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 017, no. 705 (M-1534), 22 December 1993 (1993-12-22) -& JP 05 245572 A (ASIA GIKEN KOGYO KK), 24 September 1993 (1993-09-24) * |
PATENT ABSTRACTS OF JAPAN vol. 1999, no. 11, 30 September 1999 (1999-09-30) -& JP 11 151545 A (AOYAMA SEISAKUSHO CO LTD;SANMEI SEISAKUSHO:KK), 8 June 1999 (1999-06-08) * |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2016160464A3 (en) * | 2015-03-31 | 2016-11-24 | Illinois Tool Works Inc. | Multi-station reciprocating die roll forming machine and method of patterning blanks |
CN107771108A (en) * | 2015-03-31 | 2018-03-06 | 伊利诺斯工具制品有限公司 | The reciprocating mould roll forming machine of multistation and mold base patterning method |
US10610920B2 (en) | 2015-03-31 | 2020-04-07 | Illinois Tool Works Inc. | Multi-station reciprocating die roll forming machine |
CN107771108B (en) * | 2015-03-31 | 2020-05-08 | 伊利诺斯工具制品有限公司 | Multi-station reciprocating die roll forming machine and die blank patterning method |
Also Published As
Publication number | Publication date |
---|---|
EP1166916A3 (en) | 2003-02-12 |
JP2001353547A (en) | 2001-12-25 |
US20020013178A1 (en) | 2002-01-31 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CA1228614A (en) | Apparatus for performing operations on strip material | |
US7882721B2 (en) | Container bodymaker | |
EP1166916A2 (en) | Reciprocating type thread rolling apparatus | |
US5555757A (en) | Flat die thread roller | |
KR100330188B1 (en) | Material feeding apparatus | |
US3929000A (en) | High-speed short-stroke forging press | |
CN1017783B (en) | Die-revolving high-speed cold header with multiple working positions | |
JP3251135B2 (en) | Progressive processing equipment | |
JP2018138311A (en) | Method for producing chain link plate with little waste | |
US5363686A (en) | Progressive former | |
US3903556A (en) | Cold nut former | |
CN1064310C (en) | Multi-slide mechanical press | |
US5138866A (en) | Progressive former and method of producing same | |
EP0754513B1 (en) | Heading slide guiding system | |
US5408859A (en) | Method of distributing torque between multiple press modules | |
US4497195A (en) | Swaging machine | |
JP3659961B2 (en) | Method for manufacturing rocker arm | |
EP0435992B1 (en) | Press and method of working material | |
CN109590399A (en) | A kind of band feeding mechanism and high speed stamping equipment | |
US5263356A (en) | Progressive former and method of producing same | |
KR930003131B1 (en) | Horizontally opposed die type edging press | |
CN1197666C (en) | Plate finishing press and finishing pressure loading transfer method | |
CN218140030U (en) | Double-slider press with unbalance loading prevention function | |
US389300A (en) | Wire-nail machine | |
CN116652085A (en) | Transmission structure and cold heading device for cold heading machine |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR |
|
AX | Request for extension of the european patent |
Free format text: AL;LT;LV;MK;RO;SI |
|
PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
AK | Designated contracting states |
Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR |
|
AX | Request for extension of the european patent |
Extension state: AL LT LV MK RO SI |
|
AKX | Designation fees paid | ||
REG | Reference to a national code |
Ref country code: DE Ref legal event code: 8566 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 20030813 |