EP0344117B1 - Procédé et dispositif pour laminer des rainures dans des queues d'outils - Google Patents

Procédé et dispositif pour laminer des rainures dans des queues d'outils Download PDF

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Publication number
EP0344117B1
EP0344117B1 EP89810372A EP89810372A EP0344117B1 EP 0344117 B1 EP0344117 B1 EP 0344117B1 EP 89810372 A EP89810372 A EP 89810372A EP 89810372 A EP89810372 A EP 89810372A EP 0344117 B1 EP0344117 B1 EP 0344117B1
Authority
EP
European Patent Office
Prior art keywords
grooves
segments
insertion end
axis
shank end
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
EP89810372A
Other languages
German (de)
English (en)
Other versions
EP0344117A2 (fr
EP0344117A3 (en
Inventor
Dieter Soehnlein
Dieter Dr. Wirths
Anton Knoller
Peter Kunert
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.)
Hilti AG
Original Assignee
Hilti AG
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 Hilti AG filed Critical Hilti AG
Priority to AT89810372T priority Critical patent/ATE98537T1/de
Publication of EP0344117A2 publication Critical patent/EP0344117A2/fr
Publication of EP0344117A3 publication Critical patent/EP0344117A3/de
Application granted granted Critical
Publication of EP0344117B1 publication Critical patent/EP0344117B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K5/00—Making tools or tool parts, e.g. pliers
    • B21K5/02—Making tools or tool parts, e.g. pliers drilling-tools or other for making or working on holes
    • B21K5/10—Forming drill-bit shanks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
    • B21H7/00—Making articles not provided for in the preceding groups, e.g. agricultural tools, dinner forks, knives, spoons
    • B21H7/18—Making articles not provided for in the preceding groups, e.g. agricultural tools, dinner forks, knives, spoons grooved pins; Rolling grooves, e.g. oil grooves, in articles
    • B21H7/187—Rolling helical or rectilinear grooves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K1/00—Making machine elements
    • B21K1/44—Making machine elements bolts, studs, or the like
    • B21K1/54—Making machine elements bolts, studs, or the like with grooves or notches
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
    • B21H7/00—Making articles not provided for in the preceding groups, e.g. agricultural tools, dinner forks, knives, spoons
    • B21H7/18—Making articles not provided for in the preceding groups, e.g. agricultural tools, dinner forks, knives, spoons grooved pins; Rolling grooves, e.g. oil grooves, in articles

Definitions

  • the invention relates to a forming process for the production of grooves in the insertion ends of drilling and chiseling tools, wherein at least two grooves are rolled into their full depth in the insertion end of the tools at the same time by means of a number of segments corresponding to the number of grooves in a single pass, the Each segment rotates about an axis that lies in a plane perpendicular to the axis of the insertion end and there is a relative movement between the insertion end and the axes of the segments parallel to the axis of the insertion end.
  • Tools of the aforementioned type are known for example from DE-C-2 551 125 and are used in particular for stone processing.
  • the tools are inserted into a receptacle of a drive device, this receptacle having fixed or radially disengageable locking elements which engage in a form-fitting manner in the grooves of the insertion end of the tools. Torque can be transmitted to the tool via these locking elements and the tool can be prevented from being ejected from the receptacle.
  • the form-fitting holder in the receptacle grooves of the insertion end can be produced in different ways.
  • This machining production has the disadvantages known per se, such as a high expenditure of time and unfavorable influencing of the material by interrupting the fiber course.
  • the further known embossing method according to DE-A-3 015 893 was also not able to completely eliminate the disadvantages, in particular with regard to the expenditure of time.
  • due to the high forces occurring in this forming process a relatively large expenditure on equipment is required.
  • DE-A-2 065 191 discloses a device for pressing control slots into the wall of a pre-machined slide core.
  • segments are provided for pressing in the control slots, which can be pivoted about an axis perpendicular to the axis of the slide core.
  • a relative movement takes place between the push-in segments and the slide core parallel to the axis of the slide core.
  • the invention has for its object to provide a forming process that enables simple and efficient production of the grooves in the insertion ends of drilling and chiseling tools without the material flowing in the axial direction of the insertion end.
  • the grooves are continuously produced when the segments are being rolled, which on the one hand requires smaller forming forces compared to a pure stamping process and on the other hand enables the material to flow better.
  • This flow of the material results in a favorable fiber orientation of the material in the area of the insertion end.
  • the rolling of the grooves can be done from the free end of the insertion end or from the opposite end, ie directly to the full.
  • the grooves are rolled to full depth in one pass. This rolling of the grooves to the full depth is made possible in particular by the continuous shaping of the material and the lower power requirement compared to a pure stamping process. Rolling the grooves in one pass enables efficient production and a high surface quality in the area of the longitudinal grooves.
  • the grooves can have a longitudinal extent extending in the longitudinal direction or in the circumferential direction of the insertion end.
  • grooves are rolled in at the same time during the production of the insertion end. If several symmetrically arranged grooves are rolled in at the same time, the lateral forces generated during rolling can be compensated for. If all grooves are rolled in at the same time, subsequent changes in cross-section of the grooves that have already been produced can be avoided. From the point of view of the arrangement of the grooves, there are no limits to the method. For example, two grooves can be diametrically opposed to one another, or three symmetrically distributed grooves can be provided. Instead of individual axial grooves, entire groups of, for example, grooves arranged axially one behind the other can also be rolled into the insertion end.
  • a device known from DE-A-2 065 191 which is suitable for rolling at least two grooves into the insertion end of drilling and chiseling tools by means of segments, each segment being about an axis which is perpendicular to the axis of the insertion end Is level, rotatably mounted lever is arranged and between the insertion end and axes of the lever, a relative movement parallel to the axis of the insertion end can be characterized according to the invention in that the segments have a counter-profile, which allows the material to flow in the axial direction of the insertion end during rolling prevented. When the segments are pivoted about the axis which is essentially perpendicular to the axial direction of the insertion end, the segments roll in the axial direction at the insertion end.
  • the relative movement between the segments and the insertion end can be brought about by axially displacing the axis of the segments or by a feed movement of the insertion end.
  • the segments are arranged on rotatably mounted levers, which can be done for example by a releasable connection. This provides the opportunity to replace the segments after they have worn out.
  • the levers are preferably designed with two arms with an actuating arm projecting away from the segment.
  • the counter-profiling with stop surfaces acting essentially in the axial direction creates a kind of momentary positive locking during the rolling process between the segment and the insertion end, which prevents the material from flowing in the axial direction of the insertion end. This forces the material to flow sufficiently in the radial direction.
  • a working cylinder is advantageously provided for rotating the lever.
  • the working cylinder can be operated for example by means of compressed air or expediently by means of a hydraulic fluid. Since relatively high forces are necessary with a relatively short distance, hydraulically operated cylinders are particularly suitable as working cylinders, which also enable good synchronization of several cylinders to be actuated simultaneously.
  • the device shown in FIGS. 1 to 4 for producing an insertion end 1 has segments 2 which are arranged on a lever 3.
  • the lever 3 is rotatably mounted about an axis 4 which is substantially perpendicular to the axial direction of the insertion end 1.
  • the levers 3 have two arms and are connected to a push rod 6 at the end opposite the segments 2 by means of bolts 5.
  • the push rod 6 is connected via a ball head 6a to an annular piston 7 which is displaceable in a working cylinder 8 in the axial direction of the insertion end 1.
  • the ring piston 7 is displaced by means of a hydraulic fluid 9, which is supplied to the working cylinder 8 via a connecting piece 10.
  • the insertion end 1 is fed between the segments 2. Due to the symmetrical arrangement of the segments 2, the insertion end 1 is centered at the same time.
  • the annular piston 7 is now moved into the end position shown in FIG. 2.
  • the segments 2 connected to the levers 3 roll in the axial direction at the insertion end 1 and roll grooves 1a into the surface of the insertion end 1.
  • the levers 3 are rotated about the axis 4 by the annular piston 7 via the push rod 6.
  • the insertion end 1 is released and the levers 3 can be rotated back into the starting position shown in FIG. 1 by the annular piston 7.
  • the device is in turn ready for the production of the grooves 1a at a further insertion end 1.
  • a total of four segments 2 connected to levers 3 are arranged over the circumference of the insertion end 1.
  • the levers 3 are connected to consoles 11 via the axes 4.
  • the brackets 11 are attached to a face plate 12, not shown in FIGS. 1 and 2. Instead of four brackets 11, however, two, three or six brackets 11 can also be arranged on the face plate 12.
  • the insertion end 1 is surrounded by the segments 2 over the entire circumference. This ensures that a precise cross section of the insertion end 1 is achieved when rolling the grooves 1a.
  • the grooves 1a on the groove base are provided with a profile 1b which has stop surfaces 1c which act essentially in the axial direction.
  • the profiling 1b is rolled into the surface of the insertion end 1 simultaneously with the grooves 1a by the segments 2 arranged on the lever 3.
  • the segments 2 are provided with a counter-profile 2a corresponding to the profile 1b.
  • the profiling 1b prevents an excessive change in length of the insertion end when rolling the grooves 1a and thereby enables the formation of an angular profile of the insertion end 1. A cross-sectional change resulting from the change in length of the insertion end 1 is thereby avoided.

Claims (3)

  1. Procédé de formage pour la réalisation de rainures dans des tiges d'emmanchement d'outils de perçage et de burinage, caractérisé en ce que dans la tige d'emmanchement (1) des outils, sont laminées simultanément, en une seule passe et sur leur profondeur totale, au moins deux rainures (1a) au moyen de segments (2) dont le nombre correspond au nombre des rainures (1a), les segments tournant respectivement autour d'un axe (4) situé dans un plan perpendiculaire par rapport à l'axe de la tige d'emmanchement (1), un mouvement relatif s'effectuant entre la tige d'emmanchement (1) et les axes (4) des segments (2), parallèlement à l'axe de la tige d'emmanchement (1), et un profil (1b) qui empêche le fluage du matériau dans le sens axial de la tige d'emmanchement (1) et est muni de surfaces d'arrêt (1c) qui agissent sensiblement dans le sens axial de la tige d'emmanchement (1), étant laminé pour au moins une partie des rainures (1a) dans le fond des rainures.
  2. Dispositif pour laminer au moins deux rainures (1a) dans la tige d'emmanchement (1) d'outils de perçage et de burinage au moyen de segments (2), chaque segment étant fixé sur un levier monté de manière à pouvoir tourner autour d'un axe (4) situé dans un plan perpendiculaire par rapport à l'axe de la tige d'emmanchement (1) et un mouvement relatif pouvant s'effectuer entre la tige d'emmanchement (1) et les axes (4) des leviers, parallèlement à l'axe de la tige d'emmanchement (1), caractérisé en ce que les segments (2) présentent un profilage conjugué qui empêche pendant le laminage un fluage du matériau dans le sens axial de la tige d'emmanchement (1).
  3. Dispositif selon la revendication 2, caractérisé en ce qu'il comprend des cylindres de travail (8) pour la mise en rotation des leviers (3).
EP89810372A 1988-05-25 1989-05-19 Procédé et dispositif pour laminer des rainures dans des queues d'outils Expired - Lifetime EP0344117B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89810372T ATE98537T1 (de) 1988-05-25 1989-05-19 Verfahren und vorrichtung zum walzen von nuten in einsteckenden von werkzeugen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3817680A DE3817680A1 (de) 1988-05-25 1988-05-25 Umformungsverfahren fuer werkzeuge
DE3817680 1988-05-25

Publications (3)

Publication Number Publication Date
EP0344117A2 EP0344117A2 (fr) 1989-11-29
EP0344117A3 EP0344117A3 (en) 1990-12-27
EP0344117B1 true EP0344117B1 (fr) 1993-12-15

Family

ID=6355057

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89810372A Expired - Lifetime EP0344117B1 (fr) 1988-05-25 1989-05-19 Procédé et dispositif pour laminer des rainures dans des queues d'outils

Country Status (8)

Country Link
US (1) US4941339A (fr)
EP (1) EP0344117B1 (fr)
JP (1) JP2551996B2 (fr)
AT (1) ATE98537T1 (fr)
CA (1) CA1327133C (fr)
DE (2) DE3817680A1 (fr)
DK (1) DK170363B1 (fr)
FI (1) FI95358C (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4022261C1 (fr) * 1990-07-12 1991-11-21 Mannesmann Ag, 4000 Duesseldorf, De
DE19622355A1 (de) 1996-06-04 1997-12-11 Bayer Ag Formkörper die agrochemische Mittel freisetzen
CN1059850C (zh) * 1997-04-09 2000-12-27 郑安明 精密热锻压矿山钎头的加工方法
DE102018113978B3 (de) * 2018-06-12 2019-09-05 Mag Ias Gmbh Kaltwalzmaschine und Verfahren zur Erzeugung eines Profils an einem Werkstück
CH714772A1 (de) * 2018-11-15 2019-09-13 Grob Ernst Fa Vorrichtung und Verfahren zum kaltumformenden Profilieren von Werkstücken.
DE102021109639B3 (de) 2021-04-16 2022-08-25 Schaeffler Technologies AG & Co. KG Verfahren zur Herstellung eines ein Verzahnungsprofil aufweisenden Bauteils; sowie Werkzeugvorrichtung

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US685417A (en) * 1901-01-07 1901-10-29 Lewis Williams Spike-grooving machine.
US1231324A (en) * 1916-04-27 1917-06-26 Cleveland Hardware Company Master-die for forging dies for drop-hammers, presses, and the like.
US3591136A (en) * 1969-02-26 1971-07-06 Arthur E Bishop Rotary valve with curved valve slot
DE3015893A1 (de) * 1980-04-24 1981-10-29 Hilti AG, 9494 Schaan Verfahren zum herstellen von mitnahmenuten an werkzeugen
GB2127327B (en) * 1982-08-20 1986-04-30 Alton Systems Limited An antiskid surface treatment for use on scaffolding components
JPS59157742U (ja) * 1983-04-04 1984-10-23 新日本製鐵株式会社 鋼板面への与歪装置
DE3413432A1 (de) * 1983-12-27 1985-07-04 Gebrüder Heller GmbH Werkzeugfabrik, 2807 Achim Bohrer fuer handbohrmaschinen
AU566086B2 (en) * 1984-10-04 1987-10-08 Bishop Steering Technology Limited Valve cores

Also Published As

Publication number Publication date
JP2551996B2 (ja) 1996-11-06
FI95358B (fi) 1995-10-13
CA1327133C (fr) 1994-02-22
DE58906401D1 (de) 1994-01-27
EP0344117A2 (fr) 1989-11-29
US4941339A (en) 1990-07-17
DK170363B1 (da) 1995-08-14
FI95358C (fi) 1996-01-25
ATE98537T1 (de) 1994-01-15
DE3817680A1 (de) 1989-12-07
EP0344117A3 (en) 1990-12-27
FI892493A0 (fi) 1989-05-23
JPH0225234A (ja) 1990-01-26
DK252789A (da) 1989-11-26
FI892493A (fi) 1989-11-26
DK252789D0 (da) 1989-05-24

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