EP0935507B1 - Procede de fabrication d'ebauches de pieces a pinces - Google Patents
Procede de fabrication d'ebauches de pieces a pinces Download PDFInfo
- Publication number
- EP0935507B1 EP0935507B1 EP97943040A EP97943040A EP0935507B1 EP 0935507 B1 EP0935507 B1 EP 0935507B1 EP 97943040 A EP97943040 A EP 97943040A EP 97943040 A EP97943040 A EP 97943040A EP 0935507 B1 EP0935507 B1 EP 0935507B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- section
- process according
- profile
- blank
- pliers
- 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
Links
- 238000000034 method Methods 0.000 title claims description 25
- 238000005520 cutting process Methods 0.000 claims description 22
- 238000005242 forging Methods 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 239000007858 starting material Substances 0.000 claims 1
- 210000003323 beak Anatomy 0.000 description 4
- 239000004033 plastic Substances 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 241001080024 Telles Species 0.000 description 1
- 240000008042 Zea mays Species 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000003252 repetitive effect Effects 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
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
- B21D53/00—Making other particular articles
- B21D53/60—Making other particular articles cutlery wares; garden tools or the like
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C23/00—Extruding metal; Impact extrusion
- B21C23/02—Making uncoated products
- B21C23/04—Making uncoated products by direct extrusion
- B21C23/14—Making other products
- B21C23/142—Making profiles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B7/00—Pliers; Other hand-held gripping tools with jaws on pivoted limbs; Details applicable generally to pivoted-limb hand tools
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B7/00—Pliers; Other hand-held gripping tools with jaws on pivoted limbs; Details applicable generally to pivoted-limb hand tools
- B25B7/02—Jaws
Definitions
- the present invention relates to a process for manufacturing metal blanks bit or branch kernels pliers comprising a jaw.
- the invention aims to allow the industrial production of wide ranges of pliers with reduced tools, and therefore particularly economic.
- the manufacturing process according to the invention is characterized in that one cuts the outline of each blank in a section of profile of respective shape of variable thickness whose cross-section transversal corresponds to at least one section overall longitudinal of the draft.
- this process can include one or more features of claims 2 to 10.
- the invention also relates to a method manufacturing a half-clamp, according to claims 11 and 13, using the method of the invention.
- a blank is produced as described above which has a pliers branch core, and we overmold a handle of pliers on this core.
- the overmolding mold is closed on a adapter ring threaded onto the branch core.
- FIG. 1 the blank 1 of a one-piece jaw intended to equip the protruding branch with a multi-grip pliers.
- This blank consists of a jaw 2 of constant large thickness E, typically of the order of 9 mm, and of a fixing heel 3 of constant thickness e much smaller, typically of the order of E / 2 , or about 4 mm.
- An intermediate bead 4 is provided between the jaw and the heel.
- the blank is symmetrical with respect to its median plane P.
- Heel 3 is delimited, on each face, by a straight shoulder 5, substantially perpendicular at plane P.
- shoulder 5 is bordered by a straight clearance groove 6.
- the shoulder 5 connects to a short flat surface 7 parallel to plane P, then joins the jaw root 2 by an inclined face 8.
- the angle ⁇ of this inclined face with the perpendicular to the plane P is preferably at least equal to 30 °, and for example close to this value.
- heel 3 is crossed by a wide oblong cutout 9 rounded ends.
- a succession of blanks 1 is produced from a profile of shape 10, obtained by extrusion, shown in Figures 2 and 3.
- This profile has the same section as the blank 1 when looking at the shoulders 5 at the end
- it consists of a part 2 with rectangular section, of constant thickness E, of a part 3 with rectangular section, of constant thickness e , and, between these two parts, part 4 in excess thickness.
- the latter presents, on the side of the game. 2, two faces 8 inclined at the above angle ⁇ ; on the other side, it has two faces 5 perpendicular to the median plane P, each bordered by a clearance groove 6.
- the faces 8 and 5 are connected on each side by a face 7 parallel to the plane P.
- FIG. 5 The assembly is shown in Figure 5 jaw 12, consisting of the blank 1 machined in the active region 13 ( Figure 1) of jaw 2, with two sheet metal parts 14, 15 of elongated shape, flat in their front region, which surround the heel 3, to achieve the protruding branch 16 of a pliers.
- Each piece 14, 15 ends, at the front, by a straight edge 17 which rests on the shoulder 5 corresponding all along it. This support, which is made reliable by the presence of the grooves of clearance 6, allows the clamping forces to be taken up when using the tool.
- Each piece 14, 15 further comprises two orifices 18 which each fit in an end round 19 of the cutout 9, as shown in phantom in Figure 1.
- the assembly parts 12, 14 and 15 is produced using two rivets 20 which pass through these orifices 18 as well as the cutout 19. During their compression, the rods of the two rivets swell, which presses them firmly against the rounded edges 19.
- Figures 6 and 7 show the realization by simply cutting out a series of one-piece members of clamp 21 in. a 10A shape profile.
- Each member 21 forms a half-mesh, or articulation half-zone, 22, provided with an orifice 23 for the passage of the hinge pin of the clamp; on the one hand from this area, a jaw 24 of the forceps; and on the other next to zone 22, a branch nucleus 25.
- the jaw 24 is of the beak type Universal pliers.
- the profile 10A has, in section, three successive parts of increasing thickness: one thick part 24 jaw side, an intermediate part 22 corresponding to the half-mesh, and a thin part 25 corresponding to the branch core.
- the profile On one side (the upper face in Figure 7), the profile is flat on all the parts 22 and 25, and an inclined face 8A along the aforementioned angle ⁇ connects this plane to the plane face parallel of part 24.
- the profile On the other side, the profile is flat on all parts 22 and 24, and one side 5B inclined at an angle ⁇ preferably at least equal to 30 °, for example equal to ⁇ , connects this plane to the face parallel plane of part 25.
- a succession of members 21 are obtained by simple cutting 10A profile, with their main direction substantially perpendicular to the length of the profile.
- the profile 10B has two thin side portions 26 of same thickness, and a thicker central part 27. It is flat on the whole of one of its faces, and on the other side, the part 27 is bordered by two faces 8C inclined at the angle ⁇ .
- the flat underside allows the use of a flat cutting die.
- Same 21A members can be cut in the profile 10C shown in Figures 10 and 11, which has a thin central part 26 and two thick side parts 27. Again, the profile has a completely flat face. In this case, the nozzles 24 are cut in parts 27, and these are the zones 22, 25 which are arranged upside down in the part central 26.
- Figures 12 and 13 illustrate a variant very close to the previous one. However, the area central 26 of profile 10D is wider, which allows to bring together the blanks 21A to each other cut.
- Variant 10F in Figures 16 and 17 does not differs from that in Figures 6 and 7 only in that the lower inclined face 8B is plumb with the upper inclined face 8A. 21B members obtained by cutting this profile 10F therefore differ correspondingly of the members 21.
- Figure 18 shows in perspective a gripper member blank 21A obtained by cutting the profile 10B, 10C, 10D or 10E.
- This draft includes a flat face and, on the other side, a change in thickness progressive 28 at the root of its beak 24.
- Figure 20 represents a 10G profile similar to that of Figures 14 and 15, and Figure 21 shows that from this profile, we can cut either a universal clamp member blank 21A such that that of Figure 18, a draft member 21C of round nose pliers.
- a universal clamp member blank 21A such that that of Figure 18, a draft member 21C of round nose pliers.
- Figure 21 shows that from this profile, we can cut either a universal clamp member blank 21A such that that of Figure 18, a draft member 21C of round nose pliers.
- Global tools making it possible to manufacture a range of pliers is therefore particularly economical.
- Management of a fleet of shaped profiles can even be completely deleted if you start from a basic section with simple section in which we realize by forging, cold or hot, a succession of shaped profile sections in each of which there is a cutout, which is made in one step higher.
- This basic profile is forged in several steps ( Figure 23) to form a succession of sections 10H shaped profiles in each of which fits a cutout 33, which is for example that of the blank of the universal clamp 21D in Figure 24.
- Such a method eliminates the phase subsequent machining of the cutter 121.
- Figures 28 to 36 illustrate three modes different finishing of a half clamp from a 21F clamp member blank which does not differ from the blank 21A of Figure 18 only by the presence of reliefs 36, such as notches and an orifice, on the core of branch 25.
- the reliefs 36 can be obtained by cut itself.
- This handle can be aluminum, aluminum alloy, or reinforced thermoplastic or thermosetting material or not.
- FIG. 30 we begins by threading by force, or at least with joint waterproof, on the core 25 a ring 40, then the mold for molding the handle on this ring.
- the Finished half clamp is shown in Figure 31.
- the ring 40 is made of a material having a some flexibility or ductility in order to adapt internally to dimensional variations of the nucleus. 25, and externally around the closed mold. This material is for example a plastic material or aluminum.
- the front part of the ring 40 externally enlarged, is visible at the front of the handle and extend it.
- the handle 38 made of plastic, is produced independently by molding and has a cavity 41 which opens at its front end through an opening 42 and laterally through an opening 43 (Figure 34).
- the walls of the cavity 41 have reliefs 44.
- the core 25 of the clamp member is introduced through the opening 42 ( Figure 35), then additional plastic 45 is molded in the cavity 41 to secure the two pieces ( Figure 36).
- the reliefs 36 of the clamp member, and possibly 44 of the handle improve the grip between the two parts after overmolding.
- finishing modes of branch described above with reference to Figures 28 to 36 are also applicable to metallic members obtained by any other suitable process, for example by forging or cutting / stamping flat sheets.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
- Gripping Jigs, Holding Jigs, And Positioning Jigs (AREA)
Description
- la Figure 1 représente en perspective une ébauche de mors de pince multiprise réalisée conformément à l'invention;
- la Figure 2 représente en perspective un profilé de forme à partir duquel l'ébauche de mors de la Figure 1 est réalisé;
- la Figure 3 représente la section de ce profilé;
- la Figure 4 illustre en perspective la découpe d'ébauches telles que celle de la Figure 1 dans ce profilé;
- la Figure 5 représente schématiquement, en coupe longitudinale, une branche de pince multiprise équipée d'un mors obtenu à partir de l'ébauche de la Figure 1;
- la Figure 6 illustre la découpe d'ébauches d'un membre de pince dans un profilé de forme conformément à l'invention;
- la Figure 7 représente la section du profilé de forme;
- les Figures 8, 10, 12, 14 et 16 sont des vues analogues à la Figure 6 mais relatives à d'autres profilés de forme;
- les Figures 9, 11, 13, 15 et 17 représentent les sections respectives de ces profilés de forme;
- la Figure 18 représente en perspective une ébauche de membre de pince obtenue à partir de l'un quelconque des profilés des Figures 8 à 15;
- la Figure 19 représente en perspective une ébauche de demi-pince réalisée conformément à l'invention;
- la Figure 20 représente en perspective un profilé analogue à celui des Figures 14 et 15;
- la Figure 21 illustre la découpe d'ébauches de deux membres de pince différents dans ce profilé;
- la Figure 22 représente en perspective un profilé de base à section rectangulaire;
- la Figure 23 illustre le forgeage de. tronçons localisés de profilé de forme dans ce profilé de base, ainsi que la découpe d'ébauches de demi-pince dans ces tronçons localisés;
- la Figure 24 représente en perspective l'ébauche ainsi obtenue;
- la Figure 25 représente en perspective un profilé de base à section circulaire;
- la Figure 26 illustre le forgeage de tronçons localisés de profilé de forme dans ce profilé de base;
- la Figure 27 illustre la découpe dans ces tronçons localisés d'ébauches de membre de pince;
- la Figure 28 représente en perspective une autre ébauche de membre de pince réalisée conformément à l'invention et usinée pour constituer un membre de pince;
- la Figure 29 représente en perspective le membre de pince correspondant, sur lequel une poignée de pince a été surmoulée;
- la Figure 30 représente en perspective le même membre de pince et une bague rapportée;
- la Figure 31 représente le même membre de pince équipé de la bague rapportée et sur lequel une poignée de pince a été surmoulée;
- les Figures 32 et 33 montrent schématiquement, en coupe longitudinale, deux variantes de la demi-pince de la Figure 29;
- la Figure 34 illustre en perspective un autre mode de réalisation d'une demi-pince à partir du membre de pince de la Figure 28;
- la Figure 35 est une vue en plan correspondante; et
- la Figure 36 est une vue en plan, partiel-. lement en coupe, montrant la demi-pince terminée.
- (b) réalisation d'une découpe localisée 132, à peu près au centre d'un tronçon de profilé 232;
- (c) forgeage localisé de cette découpe pour former le taillant 121 de l'ébauche;
- (d) forgeage de la partie 232A du tronçon de profilé située d'un côté de la découpe forgée 132, pour l'amener à l'épaisseur désirée pour les parties 22 et 25 de l'ébauche; on obtient ainsi un tronçon de profilé de forme 10I; et
- (e) découpe de l'ébauche 21D à taillant 121 représentée à la Figure 24.
Claims (14)
- Procédé de fabrication d'ébauches métalliques (1; 21; 21A; ...; 21F; 29) de mors ou de noyaux de branches de pince comprenant une mâchoire, caractérisé en ce qu'on découpe le contour de chaque ébauche dans un tronçon de profilé de forme respectif (10; 10A; ...; 10I) d'épaisseur variable dont la section transversale correspond à au moins une section dans l'ensemble longitudinale de l'ébauche.
- Procédé suivant la revendication 1, caractérisé en ce que le tronçon de profilé de forme (10; 10A; ...; 10I) est monobloc et monomatière.
- Procédé suivant la revendication 1 ou 2, caractérisé en ce qu 'on réalise la découpe dans un profilé (10; 10A; ...; 10G) de section transversale constante.
- Procédé suivant la revendication 1 ou 2, caractérisé en ce qu'on part d'un profilé de base (32; 32A) ayant une section transversale différente de celle des tronçons de profilé de forme (10H; 10I), on réalise à partir de ce profilé de base, par au moins une opération de forgeage, des tronçons localisés (10H; 10I) de profilé de forme, et on réalise la découpe dans chacun de ces tronçons localisés.
- Procédé suivant la revendication 4, caractérisé en ce que le profilé de base (32; 32A) est un feuillard ou une barre à section transversale rectangulaire ou polygonale, ou un profilé à section transversale en courbe fermée, en particulier circulaire, notamment dévidé d'une bobine.
- Procédé suivant l'une quelconque des revendications 1 à 5, caractérisé en ce que les tronçons de profilé de forme (10B; 10C; 10D; 10E; 10G; 10H; 10I) présentent d'un côté, sur toute leur étendue, une face plane d'appui sur une matrice de découpage plane.
- Procédé suivant l'une quelconque des revendications 1 à 6, caractérisé en ce que les tronçons de profilé de forme (10; 10A; ...; 10I) comportent au moins une surface de changement d'épaisseur (8; 8A, 8B; 8C) inclinée, notamment à au moins 30°, par rapport à la perpendiculaire au plan médian (P) desdits tronçons.
- Procédé suivant l'une quelconque des revendications 1 à 7, caractérisé en ce que les tronçons de profilé de forme (10) comportent au moins un épaulement (5) sensiblement perpendiculaire à leur plan médian (P), la racine de cet épaulement étant notamment longée par une gorge de dégagement (6).
- Procédé suivant l'une quelconque des revendications 1 à 8, caractérisé en ce que la section des tronçons de profilé de forme (10D; 10C; 10D) est symétrique dans le sens transversal, et en ce qu'on y réalise par découpe des ébauches (21A) disposées tête-bêche.
- Procédé suivant l'une quelconque des revendications 1 à 9, caractérisé en ce qu'on utilise les tronçons de profilé de forme (10G) pour y découper au moins deux ébauches de formes différentes (21A, 21C).
- Procédé de fabrication d'une demi-pince, caractérisé en ce qu'on réalise, suivant l'une quelconque des revendications 1 à 10, une ébauche (21F) de noyau de branche de pince (25), et on surmoule une poignée de pince (38) sur ce noyau.
- Procédé suivant la revendication 11, caractérisé en ce que le moule de surmoulage est fermé sur une bague d'adaptation (40) enfilée sur le noyau de branche (25).
- Procédé de fabrication d'une demi-pince, caractérisé en ce qu'on réalise, suivant l'une quelconque des revendications 1 à 10, une ébauche (21F) de noyau de branche de pince (25), on introduit avec jeu le noyau de branche (25) dans une cavité (41) d'une poignée préformée (38), et on remplit l'espace restant libre dans cette cavité d'une matière de remplissage (45).
- Procédé selon la revendication 13, caractérisé en ce que la cavité (41) de la poignée préformée (38) débouche vers l'avant et latéralement.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9612141 | 1996-10-04 | ||
FR9612141A FR2754196B1 (fr) | 1996-10-04 | 1996-10-04 | Procede de fabrication de pinces |
PCT/FR1997/001737 WO1998015370A1 (fr) | 1996-10-04 | 1997-10-01 | Procede de fabrication d'ebauches de pieces a pinces |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0935507A1 EP0935507A1 (fr) | 1999-08-18 |
EP0935507B1 true EP0935507B1 (fr) | 2002-04-10 |
Family
ID=9496380
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97943040A Expired - Lifetime EP0935507B1 (fr) | 1996-10-04 | 1997-10-01 | Procede de fabrication d'ebauches de pieces a pinces |
Country Status (6)
Country | Link |
---|---|
US (1) | US6318212B1 (fr) |
EP (1) | EP0935507B1 (fr) |
AU (1) | AU4465997A (fr) |
DE (1) | DE69711908T2 (fr) |
FR (1) | FR2754196B1 (fr) |
WO (1) | WO1998015370A1 (fr) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20030090049A (ko) * | 2002-05-21 | 2003-11-28 | 현대자동차주식회사 | 자동차용 알루미늄 로워암의 제조 방법 |
TWI650064B (zh) * | 2018-02-14 | 2019-02-11 | 慶璉實業股份有限公司 | 樹剪刀座製造方法 |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB213812A (en) * | 1923-06-19 | 1924-04-10 | Gustav Klauke | Tool insulator specially for the handles of pliers and the like |
FR1054724A (fr) * | 1952-04-21 | 1954-02-12 | Procédé de fabrication de récipients de mesure pour liquides | |
US2825248A (en) * | 1955-11-28 | 1958-03-04 | Fred E Ahlbin | Scissors and method of making |
US3114973A (en) * | 1962-04-25 | 1963-12-24 | Ekco Products Company | Knife assembly |
FI51063C (fi) * | 1975-06-11 | 1976-10-11 | Fiskars Ab Oy | Saksien ja sentapaisten muovikädensijojen kiinnityssovitelma. |
JPS6076235A (ja) * | 1983-09-14 | 1985-04-30 | Riken Kaki Kogyo Kk | プライヤの製造方法 |
CA1306959C (fr) * | 1987-11-02 | 1992-09-01 | James H. Sheets | Armature de segment de frein et methode de fabrication connexe |
DE9112630U1 (de) * | 1991-10-10 | 1991-12-12 | Fa. Hans Plier, 5630 Remscheid | Zangen-Handgriff |
US5244141A (en) * | 1992-05-15 | 1993-09-14 | Doolittle Milton A | Method of manufacturing multi-characteristic small thin flat metallic parts |
US5253557A (en) * | 1992-11-12 | 1993-10-19 | The Triangle Tool Group, Inc. A Subsidiary Of The Triangle Corporation | Ergonomic handle construction for hand-held tools |
US5528834A (en) * | 1994-01-12 | 1996-06-25 | Buck Knives, Inc. | Fixed-blade knife for rugged service and its manufacture |
US5551323A (en) * | 1995-03-22 | 1996-09-03 | Beere Precision Medical Instruments, Inc. | Screwdriver handle |
US5809853A (en) * | 1996-10-23 | 1998-09-22 | Hudson; Robert V. | Protective grip for pliers-type tool |
-
1996
- 1996-10-04 FR FR9612141A patent/FR2754196B1/fr not_active Expired - Fee Related
-
1997
- 1997-10-01 EP EP97943040A patent/EP0935507B1/fr not_active Expired - Lifetime
- 1997-10-01 DE DE69711908T patent/DE69711908T2/de not_active Expired - Lifetime
- 1997-10-01 AU AU44659/97A patent/AU4465997A/en not_active Abandoned
- 1997-10-01 WO PCT/FR1997/001737 patent/WO1998015370A1/fr active IP Right Grant
- 1997-10-01 US US09/269,884 patent/US6318212B1/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
FR2754196A1 (fr) | 1998-04-10 |
US6318212B1 (en) | 2001-11-20 |
FR2754196B1 (fr) | 1998-12-18 |
EP0935507A1 (fr) | 1999-08-18 |
DE69711908D1 (de) | 2002-05-16 |
WO1998015370A1 (fr) | 1998-04-16 |
DE69711908T2 (de) | 2002-11-07 |
AU4465997A (en) | 1998-05-05 |
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