US3157080A - Sheet metal working machines - Google Patents

Sheet metal working machines Download PDF

Info

Publication number
US3157080A
US3157080A US38486A US3848660A US3157080A US 3157080 A US3157080 A US 3157080A US 38486 A US38486 A US 38486A US 3848660 A US3848660 A US 3848660A US 3157080 A US3157080 A US 3157080A
Authority
US
United States
Prior art keywords
lever
sheet metal
bearing member
frame
arm
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
US38486A
Other languages
English (en)
Inventor
Hanni Eduard
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 US3157080A publication Critical patent/US3157080A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D31/00—Shearing machines or shearing devices covered by none or more than one of the groups B23D15/00 - B23D29/00; Combinations of shearing machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D31/00—Shearing machines or shearing devices covered by none or more than one of the groups B23D15/00 - B23D29/00; Combinations of shearing machines
    • B23D31/001—Shearing machines or shearing devices covered by none or more than one of the groups B23D15/00 - B23D29/00; Combinations of shearing machines for trimming deep drawn products
    • 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
    • Y10T82/00—Turning
    • Y10T82/16—Severing or cut-off
    • Y10T82/16147—Cutting couple straddling work
    • 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
    • Y10T82/00—Turning
    • Y10T82/16—Severing or cut-off
    • Y10T82/16147—Cutting couple straddling work
    • Y10T82/16163—Cutting couple straddling work with pattern, guide or cam means [noncircular product]
    • 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
    • Y10T82/00—Turning
    • Y10T82/16—Severing or cut-off
    • Y10T82/16426—Infeed means
    • Y10T82/16639—Tool within work
    • 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
    • Y10T82/00—Turning
    • Y10T82/16—Severing or cut-off
    • Y10T82/16426—Infeed means
    • Y10T82/16967—Infeed means with means to support and/or rotate work
    • 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
    • Y10T83/8798—With simple oscillating motion only
    • Y10T83/8804—Tool driver movable relative to tool support
    • Y10T83/8809—Fixed axis lever
    • Y10T83/8811—Adjustable mechanical advantage

Definitions

  • the present invention concerns sheet metal working machines for the trimming of cylindrical and non-circular sheet metal parts and having two tool shafts of which one is mounted in a movable bearing member and the other in the machine frame.
  • the object of the invention is to provide a sheet metal working machine with which the cutting or trimming of cylindrical and non-cylindrical sheet metal parts is possible by the copy-method as well as by the follow-on method.
  • a tool is arranged in the frame mounted shaft, which tool has the inner shape of the workpiece to be machined whilst the movable bearing body, for example a rocker arm, carries a circular knife.
  • the movable bearing body for example a rocker arm
  • two driven circular knives are used.
  • the rocker arm which carries one of the knives, must be pressed with as great a force as possible against the other cutting knife and thus the workpiece passes between the circular knives.
  • a sheet metal working machine has a tool shaft with cutting knives arranged in the machine frame and a movable tool shaft with corresponding cutting knives pivotally mounted in a rocker arm opposite this tool shaft and is characterised in that there is pivotally mounted on the machine frame an operating catch under the influence of a control arrangement, which operating catch co-operates in one pivot position with the movable bearing member and locks this temporarily in the fully open position for removal of a finished cut workpiece from the machine and insertion of a new workpiece between the cutting knives and in another pivot position forms a part of a transmission for increasing the cutting pressure.
  • the locking of the rocker arm is suitably effected after a complete rotation of the frame mounted tool shaft at the moment when the distance between the two shafts has reached a maximum.
  • FIG. 1 shows, in plan view, a diagrammatic representation of the sheet metal working machine for use in accordance with the follow-on method
  • FIG. 2 shows a detail of FIG. 1 in another working position
  • FIG. 3 shows the sheet metal working machine for use in accordance with the copy-method in a first working position
  • FIG. 4 is the same detail as FIG. 3 in the locked position
  • FIG. 5 shows the construction of the movable shaft with cutting knives
  • FIG. 6 shows, in a partial sectional view the tools for cutting of a cylindrical sheet metal part
  • FIG. 7 shows in a similar view the tools for cutting a non-cylindrical part.
  • a sheet metal working machine has a frame 1 which carries a horizontal work table 2.
  • a driving motor for example, an electric motor 3 which via an infinitely variable device 4 drives the shaft 5 of an electro-magnetic clutch 6.
  • the clutch 6 is in engagement with a chain drive 7 which drives the shaft 8 of a Worm 9.
  • the worm wheel 19 with which the worm 9 co-operates Serves to drive the tool shaft 11, said shaft 11 being firmly mounted in the frame 1 and carrying a cutting tool 12.
  • a movable bearing member in the form of a rocker arm 13 is provided which is pivotably mounted in the frame about a vertical shaft 14.
  • a tool shaft 14' On the rocker 13 is mounted a tool shaft 14', said shaft 14' carrying a cutting tool 15 and being movable with the arm.
  • the tool shaft 14' is driven by the tool shaft 11 through a chain drive 16 provided between the tool shaft 11 and the tool shaft 14'.
  • the shank 15' (see FIG. 5) of the tool 15 is mounted on the end of the tool shaft 14'. If the tool 15 is to be freely rotatable then a ball bearing assembly is used for the mounting of the shank. If a fixed connection is required then, as can be seen in FIG. 5, spring plates 17 are used, the latter being tensioned by a nut 18 to provide the fixed connection.
  • the extremity of the rocker arm 13 carries a spring loaded lever 19, said lever being rotatably mounted on a bolt 20 and held in the position shown in FIG. 2 under the influence of a spring 37.
  • the part of the lever 19 directed towards the shaft 14' is connected, by a bolt 21, to the piston rod 22 of a piston (not shown), arranged in an air cylinder 23.
  • the nose of the lever 19 extends beyond the arm 13, and co-operates with the hook 25 of an operating catch 26 in that the nose 24- engages the hook 25.
  • the catch 26 is pivotally mounted in the frame 1 and has holes 27 whereby adjustment of the position thereof might be effected.
  • the remote end of the catch 26 is provided with an arm 28 pivotally coupled to the piston rod 29 of a piston 32 located in an air cylinder 30.
  • the air cylinder 30 is pivotably mounted in the frame by means of a lug 31.
  • the piston 32 moves against the action of a compression spring 33, the latter tending to hold the piston in the position illustrated in FIG. 1.
  • the sheet metal Working machine is arranged for the cutting or trimming of large cylindrical and non-cylindrical cup shaped or similar sheet metal parts With variable speed ratios of the main shafts in accordance with the follow-on method.
  • the workpiece to be machined is cut by means of the two cutting tools 12 and 15, both cutting tools being driven.
  • the arm 13 is pivoted in clockwise direction so that the cutting tool 15 contacts the workpiece.
  • For the pivoting of the arm relatively little force is needed and such force as is necessary is applied by the air cylinder 23.
  • the tool on the shaft 11 is replaced by a tool 36 having the shape of the workpiece 34 as shown in FIGS. 3 and 4 and the pivoting movement of the lever 19 is prevented.
  • a locking pin 35 is used, said pin .35 firmly connecting the lever 19 to the arm 13.
  • the arm 13 In the initial position the arm 13 is in just less than the fully open position, and is supported on the pawl 26 (FIG. 4). In this manner the catch is firmly held although, against the action of the compression spring 33, the pressure in the cylinder 39 tends to effect a pivoting of the catch in clockwise direction.
  • the arm 13 is raised a little by the edge 34 of the workpiece 34, whereupon the catch 26, under the action of the air cylinder 30, is pivoted in a clockwise direction and the locking of the arm is released (FIG. 3).
  • the arm 13 can accurately follow the contours of the rotating workpiece 34- as the arm 13 is pressed resiliently against the workpiece 34 by the air cylinder 23.
  • the air in cylinder 39 is released by a control device C schematically indicated in FIG. 1 so that the compression spring 33 acting in the direction of the arrow P1 pivots the catch 26 into the locking position seen in FIG.
  • the sheet metal working machine can be used in a simple manner both for the cutting of workpieces in accordance with the follow-on method and the copymethod whereby the conversion is effected in an extremely simple manner.
  • Sheet metal working machine for trimming cylindrical and non-cylindrical sheet metal parts, said machine comprising a machine frame, a movable bearing member mounted on said frame, two tool shafts of which one is mounted in said movable bearing member and the other on said machine frame, an operating catch pivotally mounted on said machine frame movable under the influence of a control device, said operating catch cooperating in one pivot position with the movable hearing member for temporarily locking the same in a fully open position and in another pivot position forms a part of a transmission for increasing the cutting pressure
  • said movable bearing member being formed as a swing arm pivotally mounted about an axis, a lever carried by said swing arm at the end remote from its pivoted axis, said lever being pivoted intermediate the ends thereof, said lever having a nose-like end extending beyond the swing-arm and being adapted to co-o-perate with the operating catch in that position of the swing arm in which the latter is pivoted toward the frame mounted tool shaft, and operating means connected to the other end of said lever for moving the same in
  • Sheet metal working machine as ciaimed in claim 1, in which said operating means includes an air cylinder, piston and piston rod, which latter is connected to said other end of said lever.
  • Sheet metal working machine as claimed in claim 1, in which said lever is lockable in one pivot position by a locking pin.
  • a machine for trimming cylindrical and non-cylindrical sheet metal parts comprising, in combination, a machine frame; a first tool shaft turnably carried by said frame; a first rotary tool carried by said first shaft; a swing arm pivotally mounted at one end thereof in said frame; a second tool shaft turnably mounted on said swing arm extending substantially parallel to said first tool shaft; :1 second rotary tool mounted on said second tool shaft, said swing arm being pivotable between an open position in which said tools are spaced from each other permitting placing of a sheet metal part to be trimmed between said tools and a working position in which said tools are closely adjacent each other so that a sheet metal part placed between the tools will be engaged on opposite surface portions by said tools; drive means operatively connected to said shafts for turning the same about their axes; a lever mounted intermediate its ends on the other end of said arm for tilting movement about a pivot axis parallel to the axes of said shafts, said lever having at one end a noselike extension projecting beyond said ot er end of said arm;
  • a machine as set forth in claim 5 in which the distance of the pivot axis of said lever from said one end of said lever is smaller than the distance from the other end thereof so that when said noselike extension of said lever is engaged under said hook and said operating means moves said lever so as to move said arm from its open towards its working position, said lever and said arm provide for a lever arrangement increasing the pressure at which said tools are pressed against opposite surface portions of a sheet metal part placed between the tools.
  • said means for moving said catch includes spring means for moving said catch to said first position when said one end of said lever is lifted from said catch during rotation og said non-cylindrical tool.
  • a machine for trimming cylindrical and noncylindrical sheet metal parts comprising, in combination, a machine frame; a movable bearing member mounted on said frame; two tool shafts, one of said shafts being mounted in said movable bearing member and the other on said machine frame; an operating catch pivotally mounted on said frame movable under the influence of a control device, said operating catch cooperating in one pivot position with the movable bearing member for temporarily locking the same in a fully open position and in another pivot position forms part of a transmission for increasing the cutting pressure, said movable bearing member being formed as a swing arm mounted on said frame pivotally about an axis; a lever carried by said swing arm at the end remote from its pivot axis, said lever being pivoted intermediate the ends thereof and having a noselike end extending beyond the swing arm and being adapted to cooperate with the operating catch in that position of the swing arm in which the latter is pivoted toward the frame-mounted tool shaft; and a locking means carried by said swing arm and cooperating with said lever for locking the same in fixed position References Cited

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Punching Or Piercing (AREA)
US38486A 1959-06-24 1960-06-24 Sheet metal working machines Expired - Lifetime US3157080A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH7493959A CH385596A (de) 1959-06-24 1959-06-24 Blechbearbeitungsmaschine

Publications (1)

Publication Number Publication Date
US3157080A true US3157080A (en) 1964-11-17

Family

ID=4533738

Family Applications (1)

Application Number Title Priority Date Filing Date
US38486A Expired - Lifetime US3157080A (en) 1959-06-24 1960-06-24 Sheet metal working machines

Country Status (2)

Country Link
US (1) US3157080A (de)
CH (1) CH385596A (de)

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4046038A (en) * 1976-11-01 1977-09-06 United States Steel Corporation Method and apparatus for cutting open hollow articles
US4914990A (en) * 1988-04-13 1990-04-10 H. L. Fisher Mfg. Co., Inc. Apparatus for trimming flanged cans
US5146818A (en) * 1988-04-13 1992-09-15 H. L. Fisher Mfg. Co., Inc. Can trimming apparatus
WO2009130122A1 (en) * 2008-04-21 2009-10-29 Crown Packaging Technology, Inc. Cutting method and apparatus
US20100003109A1 (en) * 2006-10-31 2010-01-07 Crow Packaging Technology, Inc. Method for producing such a metal closure with seperate disc and ring from a single closure blank
US20110011866A1 (en) * 2008-03-20 2011-01-20 Crown Packaging Technology, Inc. Closure
USD645741S1 (en) 2010-05-11 2011-09-27 Crown Packaging Technology, Inc. Closure cap
USD647799S1 (en) * 2009-11-11 2011-11-01 Crown Packaging Technology, Inc. Closure cap
USD650275S1 (en) 2010-05-11 2011-12-13 Crown Packaging Technology, Inc. Closure cap
USD650670S1 (en) 2010-05-11 2011-12-20 Crown Packaging Technology, Inc. Closure cap
USD650669S1 (en) 2010-05-11 2011-12-20 Crown Packaging Technology, Inc. Closure cap
USD651082S1 (en) 2009-11-11 2011-12-27 Crown Packaging Technology, Inc. Closure cap
USD651081S1 (en) 2009-11-11 2011-12-27 Crown Packaging Technology, Inc. Closure cap
USD652297S1 (en) * 2010-05-11 2012-01-17 Crown Packaging Technology, Inc. Closure cap
USD656818S1 (en) 2010-05-11 2012-04-03 Crown Packaging Technology, Inc. Closure cap
USD681459S1 (en) 2010-07-08 2013-05-07 Crown Packaging Technology, Inc. Closure cap
USD682105S1 (en) 2010-07-08 2013-05-14 Crown Packaging Technology, Inc. Closure cap
USD682104S1 (en) 2010-07-08 2013-05-14 Crown Packaging Technology, Inc. Closure cap
USD682106S1 (en) 2010-07-08 2013-05-14 Crown Packaging Technology, Inc. Closure cap
USD682107S1 (en) 2010-07-08 2013-05-14 Crown Packaging Technology, Inc. Closure cap
US8733576B2 (en) 2002-06-11 2014-05-27 Crown Packaging Technology, Inc. Easily openable can lid having a movable portion for pull tab access
USRE49987E1 (en) 2013-11-22 2024-05-28 Invensas Llc Multiple plated via arrays of different wire heights on a same substrate

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US310894A (en) * 1885-01-20 Machine
US973032A (en) * 1910-02-19 1910-10-18 Christopher C Goble Machine for shearing metal.
US1732353A (en) * 1927-02-09 1929-10-22 William F Bradley Bottle-capping machine
US1765208A (en) * 1929-04-17 1930-06-17 Earl H Waldrop Boiler flue and pipe cutter
US2420142A (en) * 1944-08-05 1947-05-06 Levin David Fruit squeezer

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US310894A (en) * 1885-01-20 Machine
US973032A (en) * 1910-02-19 1910-10-18 Christopher C Goble Machine for shearing metal.
US1732353A (en) * 1927-02-09 1929-10-22 William F Bradley Bottle-capping machine
US1765208A (en) * 1929-04-17 1930-06-17 Earl H Waldrop Boiler flue and pipe cutter
US2420142A (en) * 1944-08-05 1947-05-06 Levin David Fruit squeezer

Cited By (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4046038A (en) * 1976-11-01 1977-09-06 United States Steel Corporation Method and apparatus for cutting open hollow articles
US4914990A (en) * 1988-04-13 1990-04-10 H. L. Fisher Mfg. Co., Inc. Apparatus for trimming flanged cans
US5146818A (en) * 1988-04-13 1992-09-15 H. L. Fisher Mfg. Co., Inc. Can trimming apparatus
US8733576B2 (en) 2002-06-11 2014-05-27 Crown Packaging Technology, Inc. Easily openable can lid having a movable portion for pull tab access
US20100003109A1 (en) * 2006-10-31 2010-01-07 Crow Packaging Technology, Inc. Method for producing such a metal closure with seperate disc and ring from a single closure blank
US8899091B2 (en) 2006-10-31 2014-12-02 Crown Packaging Technology, Inc. Method for producing such a metal closure with separate disc and ring from a single closure blank
US9387959B2 (en) 2008-03-20 2016-07-12 Crown Packaging Technology, Inc. Closure
US20110011866A1 (en) * 2008-03-20 2011-01-20 Crown Packaging Technology, Inc. Closure
US8636161B2 (en) 2008-03-20 2014-01-28 Crown Packaging Technology, Inc. Closure
WO2009130122A1 (en) * 2008-04-21 2009-10-29 Crown Packaging Technology, Inc. Cutting method and apparatus
AU2009240146B2 (en) * 2008-04-21 2015-09-17 Crown Packaging Technology, Inc. Cutting method
US20110036134A1 (en) * 2008-04-21 2011-02-17 Crown Packaging Technology, Inc. Cutting method and apparatus
CN102015175B (zh) * 2008-04-21 2014-01-29 皇冠包装技术公司 用于切割杯状物体的方法和装置
USD647799S1 (en) * 2009-11-11 2011-11-01 Crown Packaging Technology, Inc. Closure cap
USD651081S1 (en) 2009-11-11 2011-12-27 Crown Packaging Technology, Inc. Closure cap
USD651082S1 (en) 2009-11-11 2011-12-27 Crown Packaging Technology, Inc. Closure cap
USD645741S1 (en) 2010-05-11 2011-09-27 Crown Packaging Technology, Inc. Closure cap
USD656818S1 (en) 2010-05-11 2012-04-03 Crown Packaging Technology, Inc. Closure cap
USD652297S1 (en) * 2010-05-11 2012-01-17 Crown Packaging Technology, Inc. Closure cap
USD650669S1 (en) 2010-05-11 2011-12-20 Crown Packaging Technology, Inc. Closure cap
USD650670S1 (en) 2010-05-11 2011-12-20 Crown Packaging Technology, Inc. Closure cap
USD650275S1 (en) 2010-05-11 2011-12-13 Crown Packaging Technology, Inc. Closure cap
USD682105S1 (en) 2010-07-08 2013-05-14 Crown Packaging Technology, Inc. Closure cap
USD682104S1 (en) 2010-07-08 2013-05-14 Crown Packaging Technology, Inc. Closure cap
USD682106S1 (en) 2010-07-08 2013-05-14 Crown Packaging Technology, Inc. Closure cap
USD682107S1 (en) 2010-07-08 2013-05-14 Crown Packaging Technology, Inc. Closure cap
USD681459S1 (en) 2010-07-08 2013-05-07 Crown Packaging Technology, Inc. Closure cap
USRE49987E1 (en) 2013-11-22 2024-05-28 Invensas Llc Multiple plated via arrays of different wire heights on a same substrate

Also Published As

Publication number Publication date
CH385596A (de) 1964-12-15

Similar Documents

Publication Publication Date Title
US3157080A (en) Sheet metal working machines
FR2450673A1 (fr) Machine automatique pour la manipulation de pieces a usiner et/ou d'outils
US4575969A (en) Grinding machine for punching tools
US2722072A (en) Power-operated hand tool for scraping and feathering
CN217832743U (zh) 一种工件加工设备
GB2038680A (en) Kinematic drive, in particular for driving loading and unloading apparatus of machine tools such as presses, punches and the like
JPH08309614A (ja) シャーリングマシンのクリアランス自動調節装置
CN118268452B (zh) 一种翻转式切筋模具及切筋装置
CN211027923U (zh) 一种高精度的夹板锤
JPH0512032U (ja) 多刃切断機における丸刃移動装置
KR960011073B1 (ko) 너얼링 기계
CN219205743U (zh) 一种双向自锁式压块组件
CN113020883B (zh) 便于工件批量焊接的压件装置
CN223382374U (zh) 一种冲压件预打孔机
CN223776306U (zh) 一种激光切割机用物料锁紧机构
US3442075A (en) Welding machines
SU1747269A1 (ru) Устройство дл гнуть древесины
CN110978146A (zh) 一种雕刻木材的预处理装置
DE1060745B (de) Maschine zum Abrichten der Fersenkappe von aufgeleistetem Schuhwerk
JP2793855B2 (ja) チャック装置におけるワークの芯出し構造
US2444574A (en) Stencil decorating machine
KR790001042B1 (ko) 돌기 성형장치
GB1373408A (en) Stamping or punching machine
US3019684A (en) Flat edge trimmer with an internal shearing punch and automatic operating means therefor
CN210758288U (zh) 旋切机木料自动定中装置