WO1993014893A1 - Procede pour l'assemblage de plaques, ainsi que dispositif et outil pour l'application de ce procede - Google Patents

Procede pour l'assemblage de plaques, ainsi que dispositif et outil pour l'application de ce procede Download PDF

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Publication number
WO1993014893A1
WO1993014893A1 PCT/DE1993/000058 DE9300058W WO9314893A1 WO 1993014893 A1 WO1993014893 A1 WO 1993014893A1 DE 9300058 W DE9300058 W DE 9300058W WO 9314893 A1 WO9314893 A1 WO 9314893A1
Authority
WO
WIPO (PCT)
Prior art keywords
tool
plate
tine
opening
grippers
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.)
Ceased
Application number
PCT/DE1993/000058
Other languages
German (de)
English (en)
Inventor
Günter Richter
Siegfried Kopp
Tim Schwegler
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.)
Tox Pressotechnik GmbH and Co KG
Original Assignee
Tox Pressotechnik GmbH and Co KG
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
Priority claimed from DE9200733U external-priority patent/DE9200733U1/de
Application filed by Tox Pressotechnik GmbH and Co KG filed Critical Tox Pressotechnik GmbH and Co KG
Priority to EP93902047A priority Critical patent/EP0623063A1/fr
Publication of WO1993014893A1 publication Critical patent/WO1993014893A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
    • B21D39/03—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of sheet metal otherwise than by folding
    • B21D39/038—Perpendicular plate connections
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B17/00—Connecting constructional elements or machine parts by a part of or on one member entering a hole in the other and involving plastic deformation
    • F16B17/008—Connecting constructional elements or machine parts by a part of or on one member entering a hole in the other and involving plastic deformation of sheets or plates mutually

Definitions

  • the invention is based on a method for connecting plates arranged in abutment to one another according to the preamble of claim 1 and on a machine tool for carrying out the method according to the preamble of claim 3 or a tool according to claim 17.
  • the plates are preferably sheets which are produced by the stamping process and in which, in addition to the external dimensions, the tines and other openings are produced in a stamping process.
  • the pre-punched parts are put together after a possibly still necessary edge and then connected to each other.
  • Various methods of joining panels are known. According to a generic method, in which the tines on the first plate are substantially longer than the second plate is thick, inserted through the through openings, after which the projecting part is folded and thereby clamps the second plate to the first.
  • Interlacing can only be bent over according to another known method, in order to hold the second plate to the first like a hook.
  • connection method is that, on the one hand, parts of the tine protrude above the surface of the second plate and thus represent a risk of injury, so that this technique can only be used on hidden surfaces.
  • protrusion of a part of the tine regardless of whether it is folded or bent over, is unsightly, particularly when the second plate is an outer wall of a component.
  • the parts to be connected form a so-called lobe breakthrough system in which one of the parts has an opening into which a prong of the other part inserts, after which these parts are welded together.
  • a welding device must always be present for the connection and that the surface of the parts is partially destroyed by the welding or the parts can warp due to local heating.
  • the inventive method with the characterizing features of the main claim and the machine tool according to the invention with the characterizing features of claim 3 has the advantage that two plates can be connected to each other in a simple manner without an additional connecting element and without damaging the surface.
  • the embossing tool is adjusted with respect to the workpiece via the tool and workpiece holder, in order then to carry out the embossing work on the end face of the tine by the drive device.
  • no stamp die system is required, so that the parts to be connected only have to be accessible from one side, namely the outside of the second plate. This allows a significant simplification in the assembly of housings.
  • the surface of the components to be connected can be treated in advance, since it is not stressed during assembly. Last but not least, there are no sharp contours on the assembled panels that could pose a risk of injury.
  • Another advantage is that the machine tool is easy to handle and, due to the wedging principle, a relatively firm connection is created with relatively low embossing forces, even though the connection points only have to be accessible from one side.
  • the condition of the tine material is that it is deformable in order to achieve the notching or embossing effect, which is particularly the case with sheets made of steel, aluminum, copper or brass.
  • the method according to the invention is considerably simplified by holding and gripping the plates after they are plugged together and for notching by means of openings provided in the plates.
  • its tool holder has two grippers, each of which can be pushed through an opening in the second plate and serves to center the embossing tool with respect to the sinking of the first plate and to hold (grip) the same. Because both the tool holder and the gripping device are arranged on the machine tool, the gripping via the corresponding openings simultaneously centers the tool with respect to the tines.
  • the tool or workpiece holder has an actuation device for closing and opening the grippers, wherein the actuation device for closing the grippers can have a displacement device which, when displaced in the direction of the workpiece, shoulders arranged on the grippers is slidable and thus causes the gripper to close.
  • the surfaces facing one another either from the actuating device or from the respective shoulder have a wedge-shaped course. The steeper the resulting inclined plane, the faster the grippers are swung toward each other per stroke of the actuating device.
  • the actuating device for opening the gripper has pins arranged transversely to the adjustment direction, which are guided in elongated holes provided in the grippers, so that pins and elongated holes are used in the opening movement of the actuating device spread the grippers apart.
  • the grippers are pivotably mounted on the side facing away from the workpiece.
  • a backdrop or another device which, when the actuating device is moved, causes the grippers to pivot again.
  • an opening is likewise present in the first plate, the ends of the grippers gripping the workpiece through this opening in the manner of pliers and at least partially penetrating this opening after the gripper has closed.
  • the end face of the first plate is clamped to the wall of the second plate which is transverse to it, the gripper ends being supported on the wall of the opening, i.e. the grippers hook the first plate so that the stamping tool can act against this hook resistance on the end face of the tine to deform it.
  • the two gripping jaws act and can advantageously be roughened at the ends facing one another for better grip.
  • a proximity switch is provided which emits a signal for controlling the drive device when a certain point is reached during the working movement such that the deformation of the tine by the embossing tool only begins when centering or . Adjustment of the embossing tool with respect to the tine has been carried out. Only when this adjustment has been determined via the proximity switch does the drive device begin to move the stamping tool in the direction of the tines.
  • a hold-down device which acts under the action of a spring and presses the second component onto the end face when the first component is gripped by the grippers. This prevents the tines from completely or partially slipping out of the through opening when the tine is deformed by the stamping tool.
  • the drive device and / or the actuating device works with pneumatic, hydraulic or electrical means. Appropriate working cylinders are then provided for the pneumatic or hydraulic means, while an electric motor or electromagnet is used for the electrical means.
  • the actuating device and the drive device can be controlled independently of one another. But they can also be designed as a sequential control, so that after gripping the workpiece by means of the actuating device, only the drive device moves the embossing tool.
  • centering marks can be bores into which the centering pins can be immersed, or recesses or elevations into which the end faces of the centering pins can snap.
  • the elevation can consist of warts that interact with the centering pins.
  • the warts can either be designed as an elevation or as a depression.
  • the centering pins have a concave shape at their end that comes into contact with the wart, in the second case a convex shape. If warts are used, there is the advantage, among other things, that the warts can be ground away after embossing, so that a smooth surface is produced.
  • the embossing tool is designed as a flat steel with a rectangular cross section and a chisel-like front working end, the working end being able to consist of a plurality of longitudinally or transversely arranged wedge-shaped or pyramid-shaped sections.
  • the quality of the material of the tine and its dimensions are decisive for the design of this front working end.
  • Fig. Lb shows a cross section through the connected sheet metal parts according to Figure la along the line A-A
  • 1c shows a detail from FIG. 1b on an enlarged scale
  • Fig .2 shows a section through a machine tool in the open state and according to a first
  • Embodiment; 3a the same machine in the closed state;
  • Fig .3b is a side view with partial section of this first
  • 8b shows two alternative centering options between the machine tool and the workpiece.
  • FIG. 1 two sheet metal parts 21 and 22 are shown, of which the sheet metal part 22 is arranged abutting and at right angles to the sheet 21 and the two sheets 21, 22 were connected to one another by a machine tool according to the invention according to the method according to the invention
  • Figure 2 illustrated embodiment of this machine.
  • the sheet metal part 22 has on its one end face a prong 19 which is inserted or inserted into a corresponding through opening 41 (FIG. 1 c) in the sheet metal part 21.
  • This sheet metal part 21 is thus on the end edge of the sheet metal part 22.
  • the tine 19 is stamped with the sheet metal part 21 in the connected state of the two sheet metal parts. This embossing is explained in more detail with reference to FIGS. 1b and 1c.
  • the openings 23 and 24, and in the sheet metal part 22 there is an opening 25 which, like the prongs 19, are obtained in particular by punching the sheet metal parts and which are used for accessing the machine tool during the connection process.
  • FIG. 1c The cross section shown in FIG. 1b through the two sheet metal parts 21 and 22 shows the connection that has already been made, in which the prong 19 is already embossed, this section 40 being shown enlarged in FIG. 1c.
  • the tine 19 is inserted into the through opening 41 and stamped on the upper side with the sheet metal part 21.
  • a notch 42 was made or embossed into the upper end face of the tine 19 using a tool according to the invention (FIG. 4), the side regions 43 and 44 of this end face of the tine being pressed outwards in the manner shown and thus wedging the tine 19 in the through opening 41 cause.
  • connection technology shown in FIGS. 1 a - l c is used in particular for the assembly of housings in which a large number of sheet metal parts, which can also be arranged in several planes, typically have to be joined.
  • the machine tool shown in Figure 2 has two grippers la and lb which are pivotally mounted on axes 14 and which are inserted into the openings 23 and 24 of the sheet metal part 21 for the production of the connection. Between the two grippers la and lb, a notch tool 5 (notch stamp) is arranged with which, when the grippers are closed, an embossing of the tine 21 and thus a connection of the sheet metal part 22 to the sheet metal part 21 is effected.
  • the notching tool 5 is fastened by means of a cylindrical pin 12 to a tool holder 2, which in turn interacts with a hydraulic cylinder 8.
  • the hydraulic cylinder 8 is supplied by a hydraulic unit (not shown), its piston being adjustable along the axis 27 shown in broken lines.
  • a stroke limiter is provided so that the notching tool 5 always covers a precisely defined stroke.
  • This includes a stroke limiting element 7, which is attached to a piston rod 28, which in turn belongs to the hydraulic cylinder 8.
  • the stroke limiting element 7 thus moves synchronously with the notching tool 5.
  • There is also a stop element 29 which is fixedly connected to a housing cap 6 of the machine tool and has a bore for the passage of the piston rod 28.
  • the stationary stop element 29 acts as a stop for the lower part of the stroke limiting element 7.
  • the maximum stroke (identified by the distance 30 in FIG. 2) and thus also the embossing depth of the notching tool 5 can be adjusted by the stroke limiting element 7 being adjusted by means of a screw 17 on the piston rod 28.
  • An inductive proximity switch 18 is attached to the housing cap 6 and responds to the movement of the stroke limiting element 7. If the element 7 moves downward, an electrical signal is triggered when passing the switching point 31, which is used to control the hydraulic system. Only when this signal has been generated is the full working pressure for deforming the tine 19 released.
  • the hydraulic system is controlled using a programmable logic controller.
  • the hydraulic cylinder 8 is held in a receiving part 3 serving as a tool holder.
  • the sensor part 3 is provided on the outside with a protective plate 9, for example to prevent an operator from getting his hands into the inner area of the machine tool, in which the moving parts are located.
  • the grippers la and ib are also connected to the pick-up part 3.
  • the grippers are pivotably mounted on the axes 14. In the interior of the grippers la and lb there are slot-shaped recesses 32a and 32b (shown in dashed lines) which taper towards the top.
  • pins 33a and 33b are displaced in the recesses 32a and 32b and, when the tool holder 2 moves upward, cause the grippers 1a and 1b to spread apart as a result of the tapering shape of the recesses explained.
  • the tool holder 2 has a displacement device 2a, which the hydraulic cylinder 8 also displaces.
  • the grippers la and lb have a shoulder region 34a and 34b with an inclined plane, so that when the tool holder 2 moves downward, the two grippers la and lb are pivoted toward one another, the ends of which approach each other.
  • the notching tool 5 is connected to the tool holder 2 by a cylindrical pin 12.
  • the notching tool 5 is surrounded by a hold-down device 4, by means of which the transverse sheet metal part 21 is pressed against the sheet metal part 22 arranged in abutment thereto. The force for this is generated by disc springs 11.
  • the lower surface of the hold-down is flat and lies on the sheet metal part 21.
  • the hold-down device 4 is connected to the notching tool 5 via a pin 35.
  • the hold-down device has a recess below this pin 35, so that after the lower edge of the hold-down device has been placed on the sheet metal part 21, the cutting edge of the notching tool 5 can be pressed into the sheet metal part 22 beyond the hold-down device.
  • the cutting edge of the Notching tool 5 in the illustrated embodiment has a wedge-shaped cross section with an angle at the tip of 60 °, a height of the triangle of 4 mm and a length of the cutting edge of 9 mm.
  • the cutting edge is made of hardened tool steel, for example.
  • FIG. 3a the machine tool described as the first embodiment is shown in the closed state.
  • the embossing tool 5 has been moved so far down that the stroke limiting element 7 rests on the stop element 29.
  • the displacement device 2a has been pushed by the movement of the tool holder 2 over the shoulder 34a or 34b of the gripper la or lb, so that the two gripper ends are pressed against one another.
  • the hold-down device 4 rests on the sheet metal part 21 and the cutting edge of the notching tool 5 touches the upper end face of the tine 19 of the sheet metal part 22.
  • connection shown in FIGS. 1 a - l c is produced by the machine tool described as follows:
  • the sheet metal part 21 provided with the openings 23 and 24 and the through opening 41 is placed on the sheet metal part 22 provided with the opening 25 and the prongs 19, so that the prong 19 projects into the through opening 41.
  • the two grippers la and lb of the machine tool are inserted into the openings 23 and 24 and the hydraulic cylinder 8 put under pressure .
  • the tool holder 2 is moved down until the lower edge of the hold-down 4 rests on the sheet metal part 21.
  • the associated shifting device 2a also moves downward and pushes over the shoulders 34a and 34b of the grippers, so that they are pivoted inward into the position shown in FIG. 3a.
  • the ends of the grippers are in the opening 25 of the sheet metal part 22.
  • the pressure required for this movement of the tool holder 2 is significantly lower than the actual working pressure of the machine tool.
  • the use of the proximity switch 18 ensures that the notching tool 5 is only pressed into the prongs 19 when the machine tool is properly attached. In the event of a tilt, the proximity switch does not respond to 18, since the tool holder 2 has not moved far enough downwards so that the upper part of the stroke limiting element 7 can trigger the switch 18. This ensures that there is no broken pliers or damage to the machine tool or the tool.
  • the hydraulic cylinder is reversed so that the tool holder 2 is withdrawn with the notching tool 5.
  • the pins 33a and 33b are pulled along with the tool holder 2, whereby the grippers la and lb are pivoted apart due to the shape of the elongated hole recesses 32a and 32b in the grippers la and lb, respectively. After that, the machine tool is free for a new work cycle.
  • the notching tool has a wedge-shaped profile on its end face. As shown in FIG. 4, however, other embossing profiles can also be used. In addition to the wedge-shaped notching tool 5, a straight toothed punch 50 with several teeth 51 or a punch 52 with spikes 53 can also be used.
  • the grippers 60 and 61 are shown in FIG. 5a in the open state and in FIG. 5b in the closed state.
  • the grippers 60 and 61 have clamping jaws 62 and 63 on the mutually facing end sections, between which the sheet metal part 22, which here has no opening 25, is clamped when the clamping jaws are closed (FIG. 5b).
  • the grippers 60 and 61 After insertion of the grippers 60 and 61 through the openings 23 and 24, they are pivoted against one another as described in the first exemplary embodiment and thereby clamp the sheet metal part 22 between their clamping jaws 62 and 63, after which the notching tool 5 moves downwards and the tines 19 of the sheet metal part 22 notches the connection between the To produce sheet metal parts 21 and 22.
  • the surface of the mutually facing sides of the clamping jaws 62 and 63 is roughened, for example knurled. The remaining distance between the jaws 62 and 63 corresponds to the thickness of the sheet.
  • either the grippers 60 and 61 can be exchanged as a whole or only the clamping jaws 62 and 63 can be replaced and designed to be interchangeable.
  • FIG. 6 shows a third exemplary embodiment of the machine tool according to the invention, in which the embossing force is generated electromagnetically.
  • the machine tool has a handle 70 and a switch 71, the actuation of which triggers the stamping or notching stroke.
  • the embossing is carried out using a notching tool, as in the previously described exemplary embodiments
  • the notching tool 72 is connected at its upper end to an iron core 74, which is pulled down after the electromagnet is switched on.
  • a return spring 79 ensures that the notching tool 72 returns to its original position after the embossing.
  • the drive of the notching tool 72 is similar to that of electronic nailers, with a striking movement also taking place.
  • the tool head 76 For centering the machine tool or the notching tool 72 over the desired embossing point, the tool head 76 has two centering pins 77, only one of which can be seen - the second is covered by this.
  • the two centering pins 77 engage in corresponding centering holes 80 and 81 of the sheet metal part 21, as well as them are shown in FIG. 7 and as a result of which a good adjustment of the notching tool 72 with respect to the prongs 19 is provided.
  • FIGS. 8a and 8b show two alternative centering options for the third embodiment of the machine tool.
  • two lugs 91 are pressed into the sheet metal part 21, only one of which is shown - which interacts with a concave design of the lower end of the centering pin 90, so that a positive engagement occurs when the centering pin 90 is placed on the lug 91 .
  • a wart 93 protrudes inward of the plate part 21, so that the associated centering pin 92 is accordingly convex at its lower end.
  • warts for centering instead of punch holes are particularly recommended when the sheets must not have larger openings, for example in ventilation construction.
  • the use of warts against the piercing holes has the advantage that there is no material destruction and the surface of the sheets is comparatively smooth. If the warts protrude outwards as in FIG. 8a, they can also be ground off after stamping the sheets.
  • the warts 91 and 93 are embossed into the sheets 21 and 22 before they are joined together.
  • the centering pins 77 are resiliently mounted, ie loaded by a spring 78 arranged in the machine tool, so that when the machine tool is placed on the sheet metal part, the centering pin 77, 90 or 92 is somewhat can return, so that the tool can be pressed flat onto the sheet metal part.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Straightening Metal Sheet-Like Bodies (AREA)
  • Detergent Compositions (AREA)

Abstract

Procédé pour l'assemblage de plaques se rejoignant pour former un T (21, 22) et machine-outil pour l'application de ce procédé, selon lequel un tenon (19) d'une première plaque (22) est introduit dans un trou de passage (41) d'une seconde plaque (21) et bloqué à partir de la face avant par une entaille, ladite entaille étant faite dans ledit tenon (19).
PCT/DE1993/000058 1992-01-23 1993-01-25 Procede pour l'assemblage de plaques, ainsi que dispositif et outil pour l'application de ce procede Ceased WO1993014893A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP93902047A EP0623063A1 (fr) 1992-01-23 1993-01-25 Procede pour l'assemblage de plaques, ainsi que dispositif et outil pour l'application de ce procede

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE9200733U DE9200733U1 (de) 1992-01-23 1992-01-23 Werkzeug zum Verbinden zweier Bauteile
DEG9200733.3U 1992-01-23
DEP4235965.1 1992-10-26
DE4235965 1992-10-26

Publications (1)

Publication Number Publication Date
WO1993014893A1 true WO1993014893A1 (fr) 1993-08-05

Family

ID=25919786

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE1993/000058 Ceased WO1993014893A1 (fr) 1992-01-23 1993-01-25 Procede pour l'assemblage de plaques, ainsi que dispositif et outil pour l'application de ce procede

Country Status (4)

Country Link
EP (1) EP0623063A1 (fr)
AU (1) AU3343693A (fr)
CA (1) CA2117438A1 (fr)
WO (1) WO1993014893A1 (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0711922A2 (fr) * 1994-10-13 1996-05-15 F.I.M.E. - FABBRICA ITALIANA MOTORI ELETTRICI - S.r.l. Système de serrage pour bloquer les aubes métalliques des ventilateurs centrifuges
US5709019A (en) * 1994-01-31 1998-01-20 Btm Corporation Apparatus for joining sheets of material
NL1004502C2 (nl) * 1996-11-12 1998-05-14 Christina Gertruida Theresia E Luchtkanaalsegment voor luchtbehandelingsinstallaties en een werkwijze voor de vervaardiging daarvan.
US5782130A (en) * 1997-01-27 1998-07-21 Btm Corporation Apparatus for retaining tools
US5860315A (en) * 1994-07-29 1999-01-19 Etm Corporation Device for securing tools
FR2789609A1 (fr) * 1999-02-16 2000-08-18 Armor Inox Sa Procede d'assemblage de toles et structure rigide obtenue par ledit procede
US6785959B2 (en) 2002-08-15 2004-09-07 Btm Corporation Tool assembly employing a flexible retainer
CN105081117A (zh) * 2015-08-25 2015-11-25 嘉兴永发电子有限公司 金属板类垂直连接的方法
US10328481B2 (en) 2014-03-18 2019-06-25 Btm Company Llc Clinching punch and apparatus

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2630175A (en) * 1949-12-24 1953-03-03 Savage Arms Corp Process of making securing means
DE1125871B (de) * 1956-07-31 1962-03-22 Edoardo G Bianca Verfahren zum Verbinden von Blechteilen, insbesondere bei der Herstellung von sich konisch verjuengenden Rohrstuecken fuer Rohrmaste
CH647170A5 (en) * 1980-08-04 1985-01-15 Schmidlin Ag Process for the production of a channel

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2630175A (en) * 1949-12-24 1953-03-03 Savage Arms Corp Process of making securing means
DE1125871B (de) * 1956-07-31 1962-03-22 Edoardo G Bianca Verfahren zum Verbinden von Blechteilen, insbesondere bei der Herstellung von sich konisch verjuengenden Rohrstuecken fuer Rohrmaste
CH647170A5 (en) * 1980-08-04 1985-01-15 Schmidlin Ag Process for the production of a channel

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5709019A (en) * 1994-01-31 1998-01-20 Btm Corporation Apparatus for joining sheets of material
US5860315A (en) * 1994-07-29 1999-01-19 Etm Corporation Device for securing tools
EP0711922A2 (fr) * 1994-10-13 1996-05-15 F.I.M.E. - FABBRICA ITALIANA MOTORI ELETTRICI - S.r.l. Système de serrage pour bloquer les aubes métalliques des ventilateurs centrifuges
NL1004502C2 (nl) * 1996-11-12 1998-05-14 Christina Gertruida Theresia E Luchtkanaalsegment voor luchtbehandelingsinstallaties en een werkwijze voor de vervaardiging daarvan.
US5782130A (en) * 1997-01-27 1998-07-21 Btm Corporation Apparatus for retaining tools
FR2789609A1 (fr) * 1999-02-16 2000-08-18 Armor Inox Sa Procede d'assemblage de toles et structure rigide obtenue par ledit procede
WO2000048764A1 (fr) * 1999-02-16 2000-08-24 Armor Inox S.A. Procede d'assemblage de toles et structure rigide obtenue par ledit procede
US6712259B1 (en) 1999-02-16 2004-03-30 Armor Inox Method for assembling sheet metals and rigid structure obtained by said method
US6785959B2 (en) 2002-08-15 2004-09-07 Btm Corporation Tool assembly employing a flexible retainer
US7003861B2 (en) 2002-08-15 2006-02-28 Btm Corporation Tool assembly employing a flexible retainer
US10328481B2 (en) 2014-03-18 2019-06-25 Btm Company Llc Clinching punch and apparatus
CN105081117A (zh) * 2015-08-25 2015-11-25 嘉兴永发电子有限公司 金属板类垂直连接的方法

Also Published As

Publication number Publication date
AU3343693A (en) 1993-09-01
CA2117438A1 (fr) 1993-08-05
EP0623063A1 (fr) 1994-11-09

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