US3741055A - Automatic transfer press with vertical stamping surfaces for stampingconcentric parts of sheet material - Google Patents

Automatic transfer press with vertical stamping surfaces for stampingconcentric parts of sheet material Download PDF

Info

Publication number
US3741055A
US3741055A US3741055DA US3741055A US 3741055 A US3741055 A US 3741055A US 3741055D A US3741055D A US 3741055DA US 3741055 A US3741055 A US 3741055A
Authority
US
United States
Prior art keywords
slides
cross
movement
automatic transfer
punches
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 - Lifetime
Application number
Other languages
English (en)
Inventor
J Ovanesov
V Maltsev
R Sarkisov
E Stepanian
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of US3741055A publication Critical patent/US3741055A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • B21D28/00—Shaping by press-cutting; Perforating
    • B21D28/02—Punching blanks or articles with or without obtaining scrap; Notching
    • B21D28/22—Notching the peripheries of circular blanks, e.g. laminations for dynamo-electric machines
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/30—Feeding material to presses
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/202—With product handling means
    • Y10T83/2092—Means to move, guide, or permit free fall or flight of product
    • Y10T83/2096—Means to move product out of contact with tool
    • Y10T83/2135—Moving stripper timed with tool stroke
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/202—With product handling means
    • Y10T83/2092—Means to move, guide, or permit free fall or flight of product
    • Y10T83/2096—Means to move product out of contact with tool
    • Y10T83/2135—Moving stripper timed with tool stroke
    • Y10T83/2142—Plural strippers operative upon plural tools
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/444—Tool engages work during dwell of intermittent workfeed
    • Y10T83/4577—Work fed successively to plural tools
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/444—Tool engages work during dwell of intermittent workfeed
    • Y10T83/461—With abutment to position work being fed with respect to cutter
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/647—With means to convey work relative to tool station
    • Y10T83/6476—Including means to move work from one tool station to another
    • Y10T83/6484—Punch or die station
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/808—Two tool pairs, driver for one pair moves relative to driver for other pair
    • Y10T83/825—Successively acting
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/869—Means to drive or to guide tool
    • Y10T83/8821—With simple rectilinear reciprocating motion only
    • Y10T83/8828—Plural tools with same drive means
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/869—Means to drive or to guide tool
    • Y10T83/8821—With simple rectilinear reciprocating motion only
    • Y10T83/8841—Tool driver movable relative to tool support
    • Y10T83/8843—Cam or eccentric revolving about fixed axis
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/869—Means to drive or to guide tool
    • Y10T83/8821—With simple rectilinear reciprocating motion only
    • Y10T83/8841—Tool driver movable relative to tool support
    • Y10T83/8853—Including details of guide for tool or tool support

Definitions

  • Each slide is made in the form of a link mechanism consisting of a slide block and a link on which the cross-heads with punches are mounted.
  • the link is made in the form of a vertical plate with a port accommodating the slide block secured on the eccentric of the press driven shaft.
  • Patented June 26, 1973 4 Shoots-shoot a Patented June 26, 1973 4 Sheets-Sheet 5 A l w 5 W Patented June 26, 1973 4 Sheets-Sheet &
  • T FIIL III FIE] AUTOMATIC TRANSFER PRESS WITH VERTICAL STAMPING SURFACES FOR STAMPING CONCENTRIC PARTS OF SHEET MATERIAL The present invention relates to automatic transfer presses with vertical stamping surfaces for stamping two concentric parts of sheet material and can find wide application in electrical industry for manufacturing stator and rotor laminations of electrical machines.
  • Each slide reciprocating in this press consists of cross-heads, front and rear ones, interconnected by four columns.
  • the punches of the die sets are fastened to the front cross-heads of the slides.
  • Such a slide has a heavy weight. Considerable inertia forces produced by the reciprocating motion of such a slide limit the increase in the number of press strokes and, therefore, hold back the rise of press output.
  • Motion is transmitted from the drive shaft to the driven shaft by a crank gear whose pitman is placed on the driven shaft eccentric by one end while its other end is connected to the rear cross-head of the slide.
  • the blanking force is transmitted to the front cross-head carrying the punches via four long columns which interconnect both cross-heads located on both sides of the press frame.
  • the columns are somewhat stretched while after blanking they contract to their initial length. This causes an additional sinking of the punches into the holes of the die which affects adversely the strength of the die sets and leads to their premature wear.
  • Rapid wear of the die sets is also influenced by the allowable clearances in the articulated joint between the end of the pitman and the rear cross-head and by the clearances in the joint between the eccentric shaft and the crank gear.
  • the known presses are characterized by difficult access to the crank mechanisms located inside the box-shaped frame; the upper slide of these presses obstructs access to the crank gear of the lower slide to such an extent that repairs of the lower crank gear call for the removal of the upper slide complete with its crank gear.
  • An object of the present invention resides in eliminating the aforesaid disadvantages.
  • the main object of the present invention is to provide an automatic transfer press with vertical stamping surfaces wherein the motion would be transmitted from the drive shaft to the cross-heads by such mechanisms which would simplify the design of the slide, reduce the inertia forces occasioned by its reciprocating motion; eliminate clearances in the joints of the mechanisms which convert the rotary movement of the driven shaft into the reciprocating motion of the slides, allow the use of high-precision hard-alloy compound die sets which place more exacting demands on the design of the automatic transfer press.
  • each slide is made in the form of a link mechanism whose link is a vertical plate provided with a port and carrying said cross-heads on the ends while the slide block of said mechanism is located in the port of said plate and mounted on the eccentric.
  • each slide in the form of a link mechanism allows direct transmission of force from the driven shaft to the front cross-head carrying the punch which has simplified the design of the slide an reduced its weight.
  • rolling-contact supports should be installed between the interacting surfaces of the eccentric and slide block and between those of the slide block and the plate port. This eliminates play and clearances between the interacting parts which, in turn, increases the accuracy of stamping and allows the use of high-precision hard-alloy die sets.
  • the appliance which synchronizes the removal of the finished parts from the punches with the movement of the slides would consist of pushers provided with worm wheels and screwed into sleeves which are built into the punch-carrying cross-heads with a provision for horizontal movement of a floating plate located between said cross-heads and the link and provided with projections for interacting with the sleeves, and of master forms mounted on the press frame on both sides of the floating plate and transmitting motion to the latter in the direction perpendicular to the plane of link mechanism movement.
  • the floating plate should be provided with roller supports interacting with the master forms during the motion of the links and it is desirable that the master forms should be mounted on the frame with a provision for setting-up motions which makes it possible to eliminate play and reduce friction between the interacting parts.
  • the appliance which synchronizes the opening of the device periodically feeding the blanks into the die set with the movement of the slides would comprise two flat cams with identical profiles, secured on the driven shaft with a provision for changing and fixing their relative positions and connected with the device through an intermediate lever, a springloaded pusher and a rod, the latter being adjustable for length and articulated to the device while the pusher is provided with a roller contacting the cams.
  • Such a design of this device is also interrelated with the changes in the slide design; besides, it provides for the possibility of wider adjustments of the moment and duration of device opening.
  • FIG. 1 is a general view of the press according to the invention, without the side wall;
  • FIG. 2 illustrates a slide complete with the gear wheels of the press drive
  • FIG. 3 is a section taken along line III-III in FIG. 2;
  • FIG. 4 illustrates the guide column of a press slide
  • FIG. 5 shows the appliance which synchronizes the movement of the slide with the opening of the device for periodical feeding of round blanks into the open die set
  • FIG. 6 shows the appliance which synchronizes the movement of the slide with the removal of the finished article from the press punch
  • FIG. 7 is a view along arrow A in FIG. 6.
  • the automatic transfer press with vertical stamping surfaces for stamping two concentric parts of sheet material e.g. laminations of electrical machine magnet circuits
  • compound die sets located one above the other.
  • the upper die set is intended to stamp stator laminations and round blanks while the lower die set is provided for stamping rotor laminations from round blanks fed from the upper die set.
  • the dies 1 and 2 (FIG. 1) of these die sets are mounted, respectively, on bolsters 3 and 4 secured vertically on the frame 5, one under the other.
  • the punches 6 and 7 are secured on the cross-heads 8 of the slides 9 which, like the bolsters 3 and 4 are arranged one under the other.
  • the slides 9 are moved horizontally in the mutually opposite directions by a drive shaft 10 via gear wheels 11.
  • the gear wheels 11 are mounted on driven shafts 12, each of said shafts being provided with an eccentric 13.
  • Each slide 9 (FIG. 2) is made in the form of a link mechanism comprising a link and a slide block 14.
  • the link is a vertical plate 15 with a port 16.
  • Mounted on the ends of the plate 15 are cross-heads 8 and 17, the front cross-head 8 carrying the punch while the rear cross-head 17 is used only as a support of the link mechanism.
  • the slide block 14 is located in the port 16 of the plate 15, being secured to the eccentric 13.
  • the press is provided with roller supports between these surfaces.
  • the stamping force is transmitted from the eccentric 13 (FIG. 3) via the roller support 18 to the slide block 14 wherefrom it is transmitted via roller 19 to the plate 15 and to the To ensure directional movement of the slides 9 (FIG. 2) with cross-heads 8 and 17, the latter are provided with a pair of bushings 20 (FIG. 4) which serve as sockets for the guide columns 21 fastened in the frame 5.
  • Each pair of bushings 20 is located diagonally in the cross-heads 8 and 17 and provided with roller supports 22 which reduces considerably the forces of friction arising on the surfaces of the guide columns 21 moving constantly in the bushings 20, eliminates the possible play and allows the use of high-precision hard-alloy die sets in the press.
  • the stator laminations can be blanked in the die set of the upper slide either from a sheet material or from round blanks punched in advance. This depends on the design of the die set installed on this slide.
  • the rotor laminations are punched in the lower die set from round blanks fed from the upper die set.
  • a device 23 Installed above the die set which punches the laminations from round blanks (in this example under the lower die 2) is a device 23 (FIG. 1) for periodical feeding of round blanks into the open die set.
  • the press incorporates appliances 24 (FIG. 5) and 25 (FIG. 6) which synchronize the opening of the device 23 (FIG. 5) and the removal of the finished articles from the punches, respectively, with the movement of the slides.
  • the device 23 for periodical feeding of the blanks into the die set is fastened to the frame 5 or to the bolster 4 and is made of two plates 26 and 27 one of which (26) is rotatable and installed at a certain angle to the other plate 27.
  • cams 28 of the same profile are mounted on the driven shaft with a provision for changing and fixing their relative positions. This ensures a high accuracy in setting the moment and duration ofopening of the device 23 which is particularly important at high speeds of feeding the blank into the open die set.
  • the rod 30 consists of two parts connected .by a nut which allows its length to be changed, if necessary. Such a change of the length of the rod 30 is required for adjusting the turning angle of the rotatable plate 26.
  • the rod 30 and pusher 29 are interconnected by an intermediate lever 31.
  • the spring-loaded pusher 29 moves in the guides 32 secured in the frame 5 and is provided with a roller 33 which contacts the earns 28.
  • the rod 30 is articulated to the lever 34, the later being connected to the rotatable plate 26 of the device 23.
  • the appliances 25 (FIG. 6) which synchronize the removal of the finished articles from the punches with the movement of the slides are installed in the crossheads 8 of the upper and lower slides.
  • Each appliance 25 consists of a pair of pushers 35 provided with worm wheels 36.
  • One end of the pushers 35 protrudes beyond the cross-head 8 and bears against the plate of the die stripper (the plate is not shown in the drawing).
  • the other end of these pushers 35 is threaded and screwed into sleeves 37.
  • the sleeves 37 can move freely in the channels 38 of the cross-head 8 but are kept from rotating by means of knife edges 39 entering the slots in the sleeves 37.
  • the sleeves 37 are provided with roller supports 40.
  • a floating plate 41 Located between the link plate 15 and the cross-head 8 is a floating plate 41 provided at the ends with roller supports 42 which bear against the shaped surfaces of the master forms 43 and 44 mounted movably on the frame 5. Besides, the plate 41 has projections 45 against which the roller supports 40 of the sleeves 37 bear.
  • the master forms 43 and 44 transmit motion to the plate 41 in the direction perpendicular to the plane of slide movement (the direction of movement of the plate 41 is shown by arrows B and C while the movement of the slides is shown by arrows D and E).
  • roller supports 46 located between them and kept against falling out by cages 47.
  • the moment of removal of the finished articles from the punches 6 and 7 can be adjusted by moving the master forms 43 and 44 in the sockets 48 of the frame 5.
  • the speed of removal is adjusted directly by the pushers 35 which can be screwed into the sleeves 37 to a different depth.
  • the pushers 35 are screwed in or out as required by means of a twin roller 49 (FIG. 7) interacting with the worm wheels 36.
  • the automatic transfer press functions as follows.
  • the shaft 10 (FIG. 1) is rotated by an electric motor via a V-belt drive (not shown in the drawing) and this rotation is transmitted by the gear wheels 11 to the driven shafts 12 provided with eccentrics 13.
  • the eccentrics 13 transmit motion to the slide blocks 14 (FIG. 2).
  • the rotary motion of the eccentrics 13 is resolved in the link mechanism into the vertical motions of the slide block 14in the port 16 of the link and the horizontal motions of the link 15, the guide columns 21 (FIG. 4) sliding in the bushings of the cross-heads 8 and 17. Since the eccentricity of both eccentrics 13 (FIG. 1) is oriented in opposite directions, the movement of the links is shifted in phase by-180.
  • the cams 28 actuate the device 23 via the rod 29, intermediate lever 30 and rod 31 and turn the plate 26. Falling out of the device 23 (FIG. 1), the blanks enter the lower die set where rotor laminations are punched from them. The finished rotor laminations fall out of the die set on the tray 51 and are moved along it onto a mandrel (not shown in the drawing).
  • An automatic transfer press with vertical stamping surfaces for stamping two concentric parts of sheet material comprising: a frame; horizontal frame guides; compound die sets arranged one under the other; slides moving horizontally opposite to each other in said guides and made in the form of link mechanisms; a drive shaft; driven shafts; gear wheels mounted on said driven shafts; another gear wheel mounted on the drive shaft and meshing with first-named gear wheels; eccentrics secured on said driven shafts; the link of each of said link mechanisms is a vertically arranged plate; cross-heads fastened on the end of said plates; a port made in each of said plates; a slide block of each of said mechanisms, moving in said port of the plate and secured on the eccentric of the driven shaft; punches of said die sets secured on said cross-heads; dies of said die sets secured on said frame; a device for periodical feeding of blanks into said die sets located above said die sets; an appliance which synchronizes the opening of said device with the movement of said slides; an appliance which synchronizes the movement of said slides with the removal
  • An automatic transfer press according to claim 1 wherein there are roller supports located between the interacting surfaces of the eccentric and slide block and between those of the slide block and the port of the plate.
  • An automatic transfer press according to claim 3 wherein in the floating plate is provided with roller supports interacting with the master forms during the movement of the slides, said master forms being mounted on the frame with a provision for changing their position on said frame.
  • An automatic transfer press according to claim 1 wherein the appliance synchronizing the opening of said device with the movement of the slides comprises two flat cams of the same profile secured on the driven shaft with a possibility of changing and fixing their relative positions, said cams being connected with said device via an intermediate lever, a spring-loaded pusher and a rod, the latter being adjustable for length and articulated to the device whereas the pusher has a roller contacting the cams.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Press Drives And Press Lines (AREA)
  • Manufacture Of Motors, Generators (AREA)
  • Control Of Cutting Processes (AREA)
  • Punching Or Piercing (AREA)
US3741055D 1971-03-22 1972-01-13 Automatic transfer press with vertical stamping surfaces for stampingconcentric parts of sheet material Expired - Lifetime US3741055A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU1628702 1971-03-22

Publications (1)

Publication Number Publication Date
US3741055A true US3741055A (en) 1973-06-26

Family

ID=20467585

Family Applications (1)

Application Number Title Priority Date Filing Date
US3741055D Expired - Lifetime US3741055A (en) 1971-03-22 1972-01-13 Automatic transfer press with vertical stamping surfaces for stampingconcentric parts of sheet material

Country Status (6)

Country Link
US (1) US3741055A (index.php)
JP (1) JPS4884985A (index.php)
BE (1) BE779491A (index.php)
CS (1) CS160806B1 (index.php)
DD (1) DD96183A1 (index.php)
FR (1) FR2131339A5 (index.php)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU659223B2 (en) * 1991-10-21 1995-05-11 Moore North America, Inc. Stacked table top pressure sealer system
US6076447A (en) * 1996-12-24 2000-06-20 Damask; Douglas M. Hand operated punching device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU659223B2 (en) * 1991-10-21 1995-05-11 Moore North America, Inc. Stacked table top pressure sealer system
US6076447A (en) * 1996-12-24 2000-06-20 Damask; Douglas M. Hand operated punching device

Also Published As

Publication number Publication date
JPS4884985A (index.php) 1973-11-10
DE2203960B2 (de) 1975-05-22
BE779491A (fr) 1972-08-17
DD96183A1 (index.php) 1973-03-12
CS160806B1 (index.php) 1975-05-04
DE2203960A1 (de) 1972-09-28
FR2131339A5 (index.php) 1972-11-10

Similar Documents

Publication Publication Date Title
US4497196A (en) Apparatus for performing operations on strip material
JPH09192890A (ja) ラム昇降駆動装置及びプレス機械
KR100803025B1 (ko) 갭 조절수단이 구비된 압연기
CN105964763B (zh) 一种冲孔生产主机
KR910019725A (ko) 순차 이송 가공 장치
US3922939A (en) Flying shears or stamp for traveling material
US5778721A (en) Tooling machine for reshaping workpieces
US3741055A (en) Automatic transfer press with vertical stamping surfaces for stampingconcentric parts of sheet material
CN108097797A (zh) 一种电动机安装壳制备方法
US1935854A (en) Punch press for forming sheet metal shells
US3262541A (en) Drive means for a transfer mechanism
US3871206A (en) Continuous rotary press
JPS6016856B2 (ja) 工具を貫通して間欠的に送られる帯状ブリキ板等の様な条片状又は帯状材料から金属小板を打ち抜くためのプレス機の工具の位置決め装置
US3421397A (en) Rotary cam actuated reciprocating stamping press
EP1074316B1 (en) Metal mold gap adjuster of plate pressing device
US3747452A (en) Automatic press for die blanking of two concentric parts from steel strips
EA000509B1 (ru) Устройство для ротационной штамповки и способ ротационной штамповки
SU1027904A1 (ru) Устройство дл штамповки обкаткой
US3293900A (en) Horizontal press and method of operation, especially for forming can bodies
EP0248094B1 (en) Apparatus for supporting a body for reciprocal movement
RU2341372C2 (ru) Листоштамповочный пресс-автомат
USRE22106E (en) Punch press for forming sheet
SU1296266A1 (ru) Штамп-автомат
KR930007569B1 (ko) 금속파이프의 선단 성형기(wheel type forming machine)
US3021742A (en) Punch press with die holder adjusting and locking means