EP0235212A1 - Dispositif de tour pour guider ou serrer des barres - Google Patents

Dispositif de tour pour guider ou serrer des barres

Info

Publication number
EP0235212A1
EP0235212A1 EP86905202A EP86905202A EP0235212A1 EP 0235212 A1 EP0235212 A1 EP 0235212A1 EP 86905202 A EP86905202 A EP 86905202A EP 86905202 A EP86905202 A EP 86905202A EP 0235212 A1 EP0235212 A1 EP 0235212A1
Authority
EP
European Patent Office
Prior art keywords
actuator
piston
receiving body
axial
ring
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.)
Pending
Application number
EP86905202A
Other languages
German (de)
English (en)
Inventor
Hans Jens
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
Publication of EP0235212A1 publication Critical patent/EP0235212A1/fr
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B13/00—Arrangements for automatically conveying or chucking or guiding stock
    • B23B13/12—Accessories, e.g. stops, grippers
    • B23B13/126—Supports
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
    • B23B31/02—Chucks
    • B23B31/10—Chucks characterised by the retaining or gripping devices or their immediate operating means
    • B23B31/12—Chucks with simultaneously-acting jaws, whether or not also individually adjustable
    • B23B31/20—Longitudinally-split sleeves, e.g. collet chucks
    • B23B31/201—Characterized by features relating primarily to remote control of the gripping means
    • B23B31/207—Characterized by features relating primarily to remote control of the gripping means using mechanical transmission through the spindle
    • B23B31/2072—Axially moving cam, fixed jaws

Definitions

  • the invention relates to a device for lathes for guiding or tensioning rod material, consisting of an elongate receiving body with an axial passage for the rod material, at least one end section of the receiving body being divided into a plurality of radially movable segment parts by axial slitting, and the latter End section with an outer conical surface tapering towards the end of the receiving body and cooperating with an inner truncated cone surface for radially compressing the segment parts due to a
  • Axial force is provided, from a fixed housing, in which the receiving body is rotatably mounted, and from an at least axially movable actuator for transmitting an actuating force to the receiving body in order to adjust its segment parts radially.
  • the actuator designed as an adjusting sleeve or the like is preferably axially adjustable in order to exert an axial force on the receiving body via an interposed pressure part, so that its segment parts onto the desired inner working diameter can be set (DE-Al-29 03 915, DE-Ul-81 35 511). If one or more length sections of the rod material held in the set receiving body have been turned off, the rod material must be advanced again by a feed movement in order to be able to twist off new length sections. For this purpose, the entire inner working diameter of the receiving body is not changed if the pliers are so that
  • the rod material has to be pushed through the set, close clearance between the receiving body and the rod material, which is correspondingly careful due to the resulting relatively high frictional resistance between these two parts
  • he object of the invention is to improve a device of the type initially mentioned da ⁇ executed basis that a faster advancing or' a time-truncated repositioning is provided to the bearbei ⁇ Tenden rod material.
  • the solution to the problem is based on the specified device and is characterized in that a power drive device for adjusting the actuator is connected to the actuator.
  • the power drive device comprises a piston-cylinder unit which is oriented perpendicularly to the pressure direction of the actuator and which acts directly or indirectly on the actuator and is further designed such that an axial movement of the actuator is brought about. - ä. -
  • the power drive device includes a ring part which is operatively connected to the sleeve-shaped actuator and a lever arrangement which on the one hand rigidly engages the ring part and on the other hand is articulated on the piston rod of the piston-cylinder unit.
  • the angular position of the ring part relative to the actuator about its axis of rotation is preferably adjustable, e.g. by forming the ring part as a clamping ring.
  • FIG. 1 shows a partially sectioned side view according to line I-I in FIG. 2
  • FIG. 2 shows an end view
  • FIG. 3 shows a modified embodiment of the object according to FIG. 1 in an enlarged end view
  • FIG. 4 shows the exemplary embodiment in axial section using the object according to FIGS. 1 to 3
  • FIG. 5 shows an end view according to arrow A in FIG. 4,
  • Figure 6 shows another embodiment in partial and axial section.
  • the device comprises a tubular, open-ended receptacle body 1, which is preferably completely axially severed several times over its entire length, so that several completely separate segment parts 2 are formed, which are circular around a central and common axis of rotation 3 are arranged around.
  • segment parts 2 are kept at a distance from one another, as a result of which continuous gaps 4 are formed between the segment parts.
  • Spare sheet parts 2 a relatively large radial adjustment range is created in the receiving body 1, which can reach about 4 mm.
  • the segment parts 2 delimit a material passage 5 through which the rod material 6 to be machined extends (FIG. 3).
  • the passage 5 is circular in cross section in order to be able to accommodate round material.
  • the passage it is also possible for the passage to have a different cross-sectional profile, e.g. a polygonal profile.
  • the body 1 formed by the segment parts 2 preferably has a conical surface 7 and 8 at each of its two ends, which come into contact in the usual manner against corresponding counter cone surfaces (FIG. 4) when the segment parts are adjusted in the radial direction.
  • the cone frustum surfaces 7 and 8 narrow towards the ends of the body 1.
  • the tapering is carried out in such a way that the acute angle alpha of each conical frustum surface is preferably in a range from 30 ° to 60 °. In this way, a very fine and reliable radial adjustment of the segment parts 2 is achieved.
  • each conical frustum surface 7, 8 adjoining the column 4 are formed by removing material, namely along the entire axial length of the conical frustum surfaces, so that each surface in this area is smaller in diameter than in the rest of its area .
  • the surface areas 9 mentioned are produced in a simple manner by flat flat surfaces. This design of the truncated cone surfaces also improves the radial adjustability of the segment parts 2.
  • the inner surfaces 10 of the segment parts 2, which delimit the gaps 4, are recessed to accommodate the elastic, e.g. rubber spacers 11 to give a good grip. Furthermore shows
  • each inner surface 10 has two axially spaced recesses 12 which are formed by bores extending radially from the outside to the axis of rotation 3 of the body 1, each bore by removing material from one segment part and material from the other segment part is formed.
  • the cutouts 12 of one segment part lie exactly opposite the cutouts 12 of the other segment part, so that each of the opposite cutouts together has an elastic distance. record element.
  • the inner surfaces 10 can also be provided with bores 13 which extend perpendicular to these surfaces.
  • two bores 13 are arranged at a distance from one another on each inner surface 10, the bores of one segment of the segment being coaxially opposite the bores of the other segment part.
  • helical metal springs 14 are preferably provided as elastic elements, with two mutually opposite bores each receiving a spring 14 together.
  • the receiving body 1 On its cylindrical outer surface, for example in the region of its axial center, the receiving body 1 is provided with a circumferential groove 15 which engages in all three segment parts 2.
  • this circumferential groove 15 there is an elastic ring element 16, which can be made of rubber, for example, and holds the three segment parts together.
  • the elastic spacer elements 11; 14, which keep the segment parts 2 at a distance are loosely held in the cutouts 12 or bores 13.
  • the receiving body 1 is held in a rotating bushing 17 which is rotatably mounted in a housing 20 by means of two roller bearings 18 and 19.
  • the housing 20 is fixed in a conventional manner on a lathe 21, for example by a ring nut 27.
  • a sleeve-shaped pressure part 22 is used, which in this case presses with its inner cone 23 against the one conical surface 8 of the body 1, while the other conical surface 7 of the body 1 bears against an axially stationary counter-conical surface of the surrounding bush 17.
  • the pressure part 22 bears against an axial roller bearing 24, against which in turn resilient means 25, for example a set of disc springs, press.
  • resilient means 25 for example a set of disc springs, press.
  • sleeve-shaped actuator 26 presses against the disc springs and in turn engages with the fixed housing 20 via a threaded connection.
  • the actuator 26 is also provided with a power drive device 28, e.g. connected to a piston-cylinder unit, in such a way that the actuator is rotated about the longitudinal axis 3 of the receiving body 1 in order to engage the latter in the radial direction via the pressure part 22
  • the device 28 is connected indirectly to the actuator 26, specifically via a lever arrangement 29 and a ring part 30, the latter being a clamping ring which is seated on a peripheral surface of the actuator 26 (FIG. 4).
  • the ring part 30, or alternatively a disk part or another comparable component, can also be connected to the actuator by means of a toothing, in such a way that the ring part and the actuator can be adjusted to one another about the longitudinal axis 3 of the receiving body 1 in small angular sections.
  • the clamping ring 30 rigidly attached at 31 in the usual manner by means of a screw (not shown) allows its stepless adjustment on the actuator 26.
  • the power drive unit 28 can also act directly on the actuator 26 or on the ring part 30 or the like.
  • the inner end of the actuator 26 can also have an inner, axially adjustable or non-axial be provided adjustable cam member 32, for example ring with a threaded ring or with a conventional fuse ⁇ .
  • the driver part comes to bear against a shoulder of the pressure part 22 in order to move the pressure part axially back if necessary, if the force of the spacer elements 11, 14 of the receiving body 1 should not be sufficient when the device 28 is released.
  • the piston-cylinder unit 28 effects the axial adjustment of the actuator 26 by rotating the actuator.
  • the piston-cylinder unit can also be integrated in the device and only adjust the actuator axially, as shown in FIG. 6.
  • a sleeve-shaped actuator 33 which coaxially surrounds the rear section of the pressure part 22, is only axially movable.
  • This actuator carries on its outer circumference approximately in the middle a piston 34 which extends in a ring around the actuator and protrudes radially outward.
  • the piston 34 can form an integral component with the actuator, but can also be attached to it as a separate part.
  • Actuator 33 and piston 34 are coaxially surrounded by a cylinder 35 such that
  • annular space 36 and 37 to be supplied with pressure fluid is formed on each side of the piston, each annular space being supplied via its inlet 38 and 39, respectively.
  • the cylinder is fastened by means of an end flange 35a to a threaded ring 40, for example by means of screws, which in turn is screwed onto the housing 2 and secured to it at 41 by means of a screw.
  • the cylinder 35 is closed off by a separate cover 35b.
  • the through bores 42 and 43 of the end walls of the cylinder serve as bearing points for the actuator 33. If the piston 34 is acted upon via the inlet 38, the actuator 33 moves according to the arrow 44 and closes the receiving body 1 the other inlet 39 opens the receiving body.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Actuator (AREA)

Abstract

Ce dispositif est constitué d'un élément de fixation (1) doté d'un passage axial (5) pour les barres (6), dans lequel au moins une partie extrême de l'élément de fixation est séparée par des fentes axiales en plusieurs segments (2) pouvant se déplacer radialement, et dans lequel cette partie extrême est pourvue d'une surface conique tronquée extérieure qui coopère avec une surface conique tronquée intérieure (7 et 8) pour la compression radiale des segments par la force axiale, d'un logement fixe (20) dans lequel l'élément de fixation (17) est supporté de manière rotative, et d'un élément de transmission axial (26) déplaçable au moins axialement pour transmettre une force d'entraînement à l'élément de fixation (1) pour régler les segments (2) dans le sens radial. Un système motorisé (28, 34, 35) est prévu pour l'entraînement de l'éément de transmission (26).
EP86905202A 1985-08-30 1986-08-26 Dispositif de tour pour guider ou serrer des barres Pending EP0235212A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3531011 1985-08-30
DE19853531011 DE3531011A1 (de) 1985-08-30 1985-08-30 Vorrichtung fuer drehmaschinen zum fuehren oder spannen von stangenmaterial

Publications (1)

Publication Number Publication Date
EP0235212A1 true EP0235212A1 (fr) 1987-09-09

Family

ID=6279752

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86905202A Pending EP0235212A1 (fr) 1985-08-30 1986-08-26 Dispositif de tour pour guider ou serrer des barres

Country Status (3)

Country Link
EP (1) EP0235212A1 (fr)
DE (1) DE3531011A1 (fr)
WO (1) WO1987001318A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH676562A5 (fr) * 1988-06-03 1991-02-15 Niederhaeusern Francis Von
EP0463433A1 (fr) * 1990-06-27 1992-01-02 Neukomm S.A. Canon de guidage réglable pour tour à poupée mobile
DE9306460U1 (de) * 1993-04-29 1993-09-16 Index Werke Kg Hahn & Tessky Drehautomat
DE19748735C2 (de) * 1997-11-05 1999-08-05 Pmv D O O Bohr- bzw. Fräskopf
DE102015001422B4 (de) * 2015-02-06 2016-08-18 Schlenker Spannwerkzeuge Inge & Josef Meißner GmbH & Co. KG Flexible Führungsbuchse

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL250625A (fr) * 1959-04-24
CH408591A (fr) * 1964-02-27 1966-02-28 Wuillaume Francis Tour automatique
CH624035A5 (en) * 1978-09-01 1981-07-15 Walter Neukomm Device for guiding a bar of material to be machined in an automatic lathe
DE8135511U1 (de) * 1981-12-05 1982-04-22 Jens, Hans, 2300 Kiel Spannzangenartiger Führungsaufbau für Drehmaschinen zum Führen von Staagenmaterial

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO8701318A1 *

Also Published As

Publication number Publication date
WO1987001318A1 (fr) 1987-03-12
DE3531011A1 (de) 1987-03-12

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