EP0639118A1 - Mandrin de serrage - Google Patents

Mandrin de serrage

Info

Publication number
EP0639118A1
EP0639118A1 EP93909541A EP93909541A EP0639118A1 EP 0639118 A1 EP0639118 A1 EP 0639118A1 EP 93909541 A EP93909541 A EP 93909541A EP 93909541 A EP93909541 A EP 93909541A EP 0639118 A1 EP0639118 A1 EP 0639118A1
Authority
EP
European Patent Office
Prior art keywords
coupling
chuck
cam ring
cam
chuck body
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.)
Withdrawn
Application number
EP93909541A
Other languages
German (de)
English (en)
Inventor
Hans-Michael Weller
Thomas HÜBL
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.)
Hainbuch GmbH Spannende Technik
Original Assignee
Hainbuch GmbH Spannende Technik
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 Hainbuch GmbH Spannende Technik filed Critical Hainbuch GmbH Spannende Technik
Publication of EP0639118A1 publication Critical patent/EP0639118A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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 collet is not screwed directly to the traction device of the machine tool, generally a draw tube, but is coupled to the traction device by means of a coupling device. which in turn is screwed to the pulling device.
  • the collet is divided into individual jaws by continuous longitudinal slots, which are connected to each other by elastic intermediate elements to form a type of collet head.
  • the collet has an inner collar at its rear end and also usually has a circumferential groove on the inside.
  • the actual coupling device has at its front end facing the collet an outer collar which engages in the circumferential groove of the collet.
  • the collet is replaced in such a way that the pulling device of the machine tool with the coupling device and the collet in the chuck is moved so far forward that the collet of the collet i is brought into an axial relative position to the inner cone of the chuck so that the collet can be spread so far apart by their elastic intermediate members in the circumferential direction and thus also in the radial direction that the grooves and collars at the coupling point disengage and so the clamping head is uncoupled and can be removed from the chuck.
  • the coupling device often has to be separated from the traction device of the machine tool.
  • the collet has at its rear end on the outside a coupling groove to which an outside collar adjoins at the end.
  • the coupling device in question has an inner collar on its inside and next to it an internal circumferential groove.
  • the separating slots and the elastic intermediate members accommodated in the separating slots are designed in such a way that the clamping jaws can be moved radially inwards with their rear end and at the same time can be approximated in the circumferential direction so far that the parts of the coupling device, the grooves and collars or ribs of the coupling device and the collet, disengage.
  • a changing device which engages with at least one pin in a recess in each of the clamping jaws.
  • the pins of the changing device of the associated axial plane can be pivoted by means of a drive, as a result of which the associated clamping jaw is also pivoted.
  • the new collet To insert the new collet, it is first gripped with the changing device in the relaxed position and the clamping jaws pivoted radially inwards. After the collet has been inserted into the coupling device, the pins of the changing device are pivoted back into their starting position and the collet is thereby coupled to the coupling device.
  • This embodiment of the chuck requires collets that are sufficiently flexible at least at their rear end to be handled in the manner described. The change device cannot be used with other collets.
  • the invention has for its object to provide a chuck in which an exchange of the collets is possible without this either the coupling device can be adjusted far beyond the normal operating stroke or even have to be released from the pulling device. and / or without the collets having to have an increased flexibility of the intermediate members of their clamping jaws and without requiring a special changing device.
  • the coupling device has a number of coupling segments, which are arranged next to one another in the circumferential direction and are flexibly connected to one another by means of elastic intermediate members, and these coupling segments have coupling ribs on their inside, mi which they each engage in a coupling groove, once on a coupling ring and once on the collet, and in that a cam ring with radial cams is present and the coupling segments on the outside thereof have radial nocks that can be adjusted by an adjustment movement of the cam ring in the circumferential direction or in axial direction, the coupling segments can be adjusted in the radial direction between a coupling position and a release position.
  • the coupling position In the coupling position, they couple the collet to the draw tube of the machine tool. In the release position they release the collet so that it can be exchanged for another.
  • the radial adjustment movement of the clutch segments is achieved by a rotating device.
  • the radial adjustment movement of the coupling segments is effected by a displacement device of the cam ring.
  • the cam surfaces run helically. On the one hand this results in a translation of the path with respect to the rotary movement of the cam ring, but on the other hand it also results in a reduction in force between the cam surfaces. Since the extension of the actuation path of the cam ring does not require any additional movement space in the chuck during the rotary movement, the actuating force for the cam ring to be introduced into the chuck from outside can be reduced in this way.
  • a corresponding embodiment is also possible with the chuck equipped with shifting cams according to claim 2. This extends or the axial actuation path of the cam ring and requires a correspondingly large range of movement for the cam ring within the chuck.
  • An embodiment according to claim 5 creates a very simply constructed and easy-to-operate rotary device.
  • An embodiment according to claim 13 ensures that when the rotating device is actuated, the two end positions are reliably reached even without increased operator attention and, in particular, they cannot be exceeded.
  • An embodiment according to claim 14 prevents the cam ring from being involuntarily adjusted in the operating position and possibly getting into the decoupling position.
  • Claims 15 and 16 specify further developments which are simple to manufacture and easy to use.
  • FIG. 1 shows a longitudinal section of a chuck with rotary cams and rotating device
  • Fig. 2 shows a cross section de shown
  • FIG. 1 shows a partial longitudinal section of the chuck with a modified rotating device
  • Fig. 4 shows a partial longitudinal section of the chuck with another modified
  • Rotating device shows a longitudinal section of a chuck with a sliding cam and a displacement device
  • FIG. 6 shows a longitudinal section of the chuck according to FIG. 5 with a rotating device
  • FIG. 7 shows a section of a development of a modified cam ring of the chuck according to FIG. 6;
  • Fig. 10 is a partial processing of a modified cam ring
  • FIG. 11 shows a cross section of the cam ring according to FIG.
  • Section line A - A in Fig. 11; Fig. 12 each a section longitudinal and 15 section of the chuck of FIG. 1 with a rotation lock of the cam ring, in two different operating positions.
  • the chuck 20 shown in FIG. 1 has a chuck body 21, the front section of which serves as a collet holder 22 and is therefore provided with an inner cone 23.
  • a spindle adapter 24 is arranged in the center of the chuck body 21 and firmly connected to it.
  • the chuck body 21 is aligned centrally to the work spindle of the machine tool, not shown, and is firmly connected to the work spindle by means of fastening means, also not shown.
  • a collet 25 is arranged in the collet holder 22. It is through several (not shown) axially and radially continuous longitudinal slots in individual jaws 26th divided up. These each have an outer cone surface 27 on their outside, which is matched to the inner cone 23 of the collet holder 22. On the inside, the clamping jaws 26 each have a clamping surface 28 for the workpiece.
  • the clamping jaws 26 are flexibly connected to one another by elastic intermediate members.
  • the jaws 2 have at their rear end region with the smaller cone diameter a circular arc in the circumferential direction duri fende coupling groove 29.
  • the collet 25 is held in the chuck 20 by being coupled to the machine tool when it is inserted into the chuck with the pulling device, usually in the form of a pulling tube.
  • a draw tube adapter 31 is present, which is screwed to the draw tube, not shown, of the machine tool.
  • a coupling device 32 by means of which the collet 25 is coupled to the draw tube adapter 31.
  • the coupling device 32 can be adjusted between a coupling position and a release position.
  • the collet 25 In the coupling position shown in FIG. 1 in the lower half, the collet 25 is coupled to the draw tube adapter 31 and can thus be actuated by the draw device of the machine tool.
  • the release position of the coupling device 32 shown in the upper half in FIG. 1 the collet 25 can be removed from the coupling device 32 in the axial direction and another collet can be used in the axial direction.
  • the coupling device 32 has been moved into its coupling position, the newly inserted collet 25 can be actuated.
  • the coupling device 32 has a coupling ring 33 which is screwed to the draw tube adapter 31.
  • a circumferential coupling groove 34 is present on its outside.
  • the coupling device 32 has a number of coupling segments 35 which are arranged in a ring next to one another in the circumferential direction. They are connected to one another by means of elastic intermediate members 36 made of an elastomer (FIG. 2).
  • the elastic intermediate members 36 are designed such that they exert a spreading force on the coupling segments 35, at least in the coupling position shown in FIG. 2b.
  • the intermediate members 36 are expediently designed such that they still exert a certain spreading force on the coupling segments 35 even in the release position shown in FIG. 2a, so that they reliably reach and maintain this position.
  • the coupling segments 35 have at their rear end on their inside a first coupling rib 37 which is matched to the coupling groove 34 of the coupling ring 33.
  • the coupling segments 35 have at their front end a second coupling rib 38 which is matched to the coupling groove 29 of the clamping jaws 26.
  • the coupling ribs 37 and 38 of the coupling segments 35 and the coupling groove 29 of the clamping jaws 26 and the coupling groove 34 of the coupling ring 33 are in terms of their radial dimensions and
  • the arrangement is coordinated with one another in such a way that the coupling ribs 37 still engage in the coupling groove 34 even in the release position of the coupling segments 32 (FIG. 1, upper half and FIG. 2a), while the coupling ribs 38 have emerged from the coupling groove 29 .
  • the clutch segments 35 also have on their outer side two radial cams 39 which are effective in the case of a relative movement in the circumferential direction.
  • the two radial cams 39 are arranged at a certain mutual distance in the circumferential direction.
  • the coupling device 32 also has a cam ring 41 which is rotatably guided in the chuck body 21 in the same axial area as the coupling segments 35. It has on its inside a number of radial cams 42 (FIG.
  • a rotary device 43 is provided for actuating the coupling device 32.
  • the cam ring 41 is thus rotated back and forth with respect to the chuck body 21 and thus also with respect to the coupling segments 35 between two rotational positions, which can be seen from FIGS. 2a and 2b.
  • the rotating device 43 has at least one toothed pinion 44, which is rotatably mounted with a radially oriented axis of rotation 45 in a recess 46 in the chuck body 21 which is coordinated with it.
  • the pinion 44 has a peripheral toothing or a bevel gear toothing.
  • the cam ring 41 has on its side facing the pinion 44 a front toothing geared to the toothing of the pinion 44. Since the rotary movements of the cam ring 41 are restricted to a specific arc angle range, as can be seen from FIG. 2, the toothing of the cam ring 41 can be restricted to a corresponding circumferential range. The same also applies if two or three rotary devices 43 are distributed around the circumference of the chuck 20.
  • the cooperating rotary cams 39 and 41 are provided with only one cam flank. Instead of the second cam flank, there is a shoulder, which acts as a stop in the circumferential direction works.
  • a rotary stop 47 is present (FIG. 1). It is formed by a groove 48 on the outer side of the cam ring 41 in the circumferential direction and extending through a certain arc angle, and by a stop pin 49 which engages in this groove and which at the end of the
  • Threaded shaft of a screw screwed into a corresponding threaded hole in the chuck body 21 is arranged.
  • an anti-rotation device 51 is provided for them (FIG. 1). It is formed by an axially aligned securing pin 52 and by a radially extending guide groove 53 which is matched to it.
  • One locking pin 52 each is arranged on the end face of each coupling segment 35 facing the coupling ring 33.
  • the guide grooves 53 are arranged on the end face of the coupling ring 33 facing the coupling segments 35.
  • FIG. 3 shows a chuck 60 in which only the rotary device for the cam ring is modified compared to the chuck 20. Insofar as individual parts are not explained separately below, it can be assumed that they are designed to be the same or at least similar to the corresponding parts of the chuck 20.
  • the rotating device 63 is provided for the cam ring 62 rotatably mounted in the chuck body 61.
  • This includes a circumferential toothing 64 which is attached to the outside in the front edge region of the cam ring 62.
  • a toothed pinion 65 meshes, which is rotatably mounted in a recess 66 of the chuck body 61 with an axially aligned axis of rotation.
  • FIG. 4 Another modified rotary device 70 can be seen in FIG. 4. It is formed by a blind hole 72 which is present in the cam ring 71 on the outside and is essentially radially aligned and into which a turning tool, e.g. in the form of a sufficiently long cylindrical pin 73, which is indicated by dash-dotted lines. For the turning tool there is a narrow recess 74 extending in the circumferential direction in the part of the chuck body 61 surrounding the cam ring 71 in the manner of an elongated hole.
  • a blind hole 72 which is present in the cam ring 71 on the outside and is essentially radially aligned and into which a turning tool, e.g. in the form of a sufficiently long cylindrical pin 73, which is indicated by dash-dotted lines.
  • a narrow recess 74 extending in the circumferential direction in the part of the chuck body 61 surrounding the cam ring 71 in the manner of an elongated hole.
  • the chuck 80 shown in FIG. 5 is largely identical to the corresponding parts of the chuck 20 with regard to the chuck body 81 and its collet receptacle 82, with regard to the collet 83 with the clamping jaws 84 and the coupling groove 85.
  • the coupling ring 87 with the coupling groove 88 is equal to the coupling ring 33.
  • the inside of the coupling segments 89 with the coupling ribs 91 and 92 is formed in the same way as in the coupling segments 35.
  • the coupling segments 89 are modified on their outside and the cam ring 93 mainly on its inside with respect to the coupling segments 35 and the cam ring 41 respectively.
  • the coupling segments 89 have two radial cams 94 on their outside, which are effective in the event of a relative movement in the axial direction. Their surface lines have a circular arc shape in the circumferential direction.
  • the cam ring 93 has two radial cams 95 on its inside, which are matched to the radial cams 94 of the coupling segments 89. Since the radial cams 94 and 95 By mutually axially displacing their carrier parts, they are referred to below as sliding cams 94 and 95 for better differentiation with the rotary cams 39 and 41 of the chuck 20.
  • a displacement device 96 is provided for actuating the coupling device 86. It is formed by a blind hole 97 present in the cam ring 93 on the outside and essentially radially aligned, into which a sliding tool 98 e.g. in the form of a cylindrical pin, can be inserted, which is indicated by dash-dotted lines.
  • a sliding tool 98 e.g. in the form of a cylindrical pin
  • a narrow recess 99 extending in the axial direction is provided in the part of the chuck body 81 surrounding the cam ring 93 in the manner of an elongated hole.
  • the chuck body 101, the collet 102, of the coupling device 103 the coupling ring 104, the coupling segments 105 and the cam ring 106 are again the same or at least approximately the same as the corresponding parts of the chuck 80 (Fig. 5) trained.
  • the displacement device 107, however, has been modified.
  • the displacement device 107 similar to the turning device 63 (FIG. 3), has a toothed pinion 108 which is rotatably mounted in a recess 109 in the chuck body 101 with an axially aligned axis of rotation.
  • the pinion 108 meshes with a circumferential toothing 111, which is attached in the front edge region of the cam ring 106 on the outside thereof.
  • the displacement device 107 additionally has a movement transducer 112 which converts a rotational movement of the cam ring 106 into a corresponding axial displacement movement.
  • This motion converter 112 has an elongated recess 113 which is arranged on the outside of the cam ring 106.
  • the recess 113 is designed in the manner of an elongated hole. As can be seen from FIG. 7, it is aligned on the outside of the cam ring 106 at a certain angle with respect to an axially parallel surface line of the cam ring 106. On the outside, which is in fact cylindrically curved, it runs helically.
  • a guide pin 114 cooperates with this recess 113, which can also be referred to as a guide groove, which is provided at the free end of a screw 115 which is screwed and secured into a radially aligned threaded hole in the chuck body 101.
  • the motion converter 116 (FIG. 8) is formed by an axial cam pair 117 and 118, each of which cooperates with one another, one of which is arranged on one side of the cam ring 119. Since the two axial cam pairs 117 and 118 must act alternately for the desired positive guidance of the cam ring 119, the individual cams of the two cam pairs 117 and 118 are arranged in a corresponding manner offset from one another with respect to the operating position of their individual cams.
  • a motion converter 121 acting in the same way can be seen in FIG. 9.
  • a row of axial cams 123 and 124 is arranged on each side of the cam ring 122. They interact with a row of pin-shaped guide bodies 125 and 126, respectively.
  • a modification of the coupling device 32 of the chuck 20 (FIG. 1) is explained on the basis of FIGS. 10 and 11, which is also suitable for the coupling device of the chuck 60 (FIG. 3).
  • the modification is that the surface lines of the radial or rotary cams 39 on the outside of the coupling segments 35 and the radial or rotary cams 42 on the inside of the cam ring 41 are not aligned parallel to the longitudinal axis of the chuck, but that they are aligned with an axis-parallel surface line, about the cam ring, enclose the angle B, as can be seen in the cam ring 127 (FIG. 10).
  • Such an axially parallel surface line of the cam ring 127 is symbolized by a chain line 128.
  • Some surface lines of the radial or rotary cams 129 are designated by 131.
  • the angle B is greater than 0 °, but significantly smaller than 90 °. The cam flanks thus run helically along the outside of the coupling segments and along the inside of the cam ring 127.
  • a turn-lock 140 for the cam ring 41 of the chuck 20 that can be switched on and off is explained with reference to FIGS. 12 and 13, which is shown symbolically in FIG. 1 only as a dash-dotted line 141.
  • the rotation lock has a cylindrical locking pin 142, which is guided in an axially aligned longitudinal guide 143.
  • This is formed by a through hole of the cam ring 41, which has several length sections with different diameters.
  • the first length section on the right in FIG. 12 receives the locking pin 142. It is somewhat shorter than the locking pin 142.
  • the middle length section has a slightly larger diameter. It receives a securing spring 144, the outside diameter of which is somewhat larger than the diameter of the longitudinal guide 143 and the inside diameter of which is smaller than the outside diameter of the securing pin 142.
  • the third section of the through hole is with a Provided internal thread into which a threaded pin 145 is screwed flush into the outside of the cam ring 41.
  • the unstressed length of the locking spring 144 is greater than the distance between the end face of the threaded pin 145 and the transition to the longitudinal guide 146. In the absence of other forces, the locking pin 142 is displaced in the longitudinal guide 143 until the locking spring 144 abuts the transition to the longitudinal guide, whereby the Lock pin 142 protrudes to a certain extent from the outer mouth of the longitudinal guide.
  • a pin-shaped transmission member 147 is inserted into the recess 146.
  • the recess 146 is closed at least to the extent that no dirt particles can penetrate from the outside to the locking pin.
  • the transmission member 147 like the securing pin 142, has only a relatively small diameter in view of the limited wall thickness of the cam ring 41.
  • the extension 148 is partially offset radially outward with respect to the chuck body 21, the axial projection of the surface section 146 being within the clear cross section of the extension 148.
  • a second transmission member 149 is guided so as to be longitudinally displaceable. It has approximately the shape of a collar bolt. Its collar 151 is matched to the extension 148, so that it forms a guide for the transmission member 149. A return spring 153 is guided on its shaft part 152 adjoining the collar 151. A further shaft part 154 of reduced diameter adjoins the shaft part 152. This is guided in the central through hole of an annular threaded disk 155. This threaded disk 155 also serves as a stop for the second transmission member 149, which prevents this transmission member from escaping from the extension 148 and thus also prevents the first transmission member 147 from escaping from the recess 146.
  • the return spring 153 of the transition member 149 is weaker than the locking spring 144 of the locking pin 142. As a result, the locking pin 142 is always pressed into its locking position when it is aligned with the recess 146. This arrangement also prevents the transmission member 149 from projecting further outward than necessary during the operation of the chuck 20.
  • the axial distance between the outer end face of the collar 151 and the opposite end wall of the extension 148 is exactly the same as the excess of the length of the securing pin 142 over the length of its longitudinal guide 143.
  • the end wall of the extension 149 thus forms a stop for the actuation path of the second transmission member 149 .

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gripping On Spindles (AREA)

Abstract

Mandrin de serrage (20) pour machines-outils comportant un corps de mandrin (21) avec un cône intérieur (23) pour le logement d'une pince de serrage (25) munie d'un cône extérieur (27). Le corps du mandrin (21) peut être relié à l'arbre moteur de la machine-outil. Un adaptateur de tube par traction (31) peut être relié d'une part au tube par traction de la machine-outil et comporte d'autre part un dispositif d'accouplement (32) pour les pinces de serrage (25). Le dispositif d'accouplement (32) comporte un anneau d'accouplement (33) muni d'une rainure d'accouplement (34), qui est relié à l'adaptateur de tube par traction (31). Un certain nombre de segments d'accouplement (35) sont répartis les uns à la suite des autres sur la circonférence et sont reliés les uns aux autres par des éléments intermédiaires élastiques. Les segments d'accouplement (35) présentent, au niveau de leur zone terminale arrière, une première nervure d'accouplement (37) et une seconde (38) au niveau de leur zone terminale avant. La première nervure d'accouplement (37) s'engage dans la rainure d'accouplement (34) sur l'anneau d'accouplement (32). La seconde nervure d'accouplement (38) s'engage dans la rainure d'accouplement (29) sur la mâchoire de serrage (26). Les segments d'accouplement (35) comportent, sur leur côté extérieur, au moins une came radiale, ce qui permet aux cames correspondantes d'un anneau de came (41) guidé de manière mobile dans la même zone axiale que les segments d'accouplement (35) dans le corps du mandrin (21), de coopérer. L'anneau à came (41) peut être déplacé au moyen d'un dispositif de commande (43), entre une position d'accouplement et une position de déblocage de la pince de serrage (25).
EP93909541A 1992-05-05 1993-05-04 Mandrin de serrage Withdrawn EP0639118A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4214838 1992-05-05
DE4214838A DE4214838C2 (de) 1992-05-05 1992-05-05 Spannfutter
PCT/EP1993/001081 WO1993022091A1 (fr) 1992-05-05 1993-05-04 Mandrin de serrage

Publications (1)

Publication Number Publication Date
EP0639118A1 true EP0639118A1 (fr) 1995-02-22

Family

ID=6458219

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93909541A Withdrawn EP0639118A1 (fr) 1992-05-05 1993-05-04 Mandrin de serrage

Country Status (3)

Country Link
EP (1) EP0639118A1 (fr)
DE (1) DE4214838C2 (fr)
WO (1) WO1993022091A1 (fr)

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DE19509921C2 (de) * 1995-03-18 1998-01-02 Hainbuch Gmbh Spanneinrichtung zum Spannen großer und/oder schwerer Werkstücke mit zylindrischen Aufnahmeflächen
DE10123657A1 (de) * 2001-05-15 2002-11-21 Honeywell Ag Adapter für eine Spannzange
DE20120828U1 (de) 2001-12-21 2002-03-21 Bümach Engineering International B.V., Emmen Mechanisch betätigtes Spannfutter für eine rotierende Maschinenspindel
DE10324670B4 (de) * 2003-05-30 2005-03-17 Karl Rathgeber Spannfutter
US8322727B2 (en) * 2008-12-03 2012-12-04 Caterpillar Inc. Quick change system for a machine
DE102012005111A1 (de) 2012-03-14 2013-09-19 Karl Rathgeber Spannfutter
US9999931B2 (en) * 2013-05-30 2018-06-19 Schaublin Sa Locking mechanism for a collet assembly
CA2843304A1 (fr) * 2013-07-22 2015-01-22 Narr Beteiligungs Gmbh Dispositif de pince
DE102014109546A1 (de) * 2014-07-08 2016-01-14 Röhm Gmbh Spannfutter und Spannmittel mit Schnellwechselfunktion
DE102014218039B3 (de) * 2014-09-09 2016-02-11 Hainbuch Gmbh Spannende Technik Spannvorrichtung

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US2273377A (en) * 1941-03-10 1942-02-17 Earl F Rice Mechanical chuck
US3174402A (en) * 1963-05-24 1965-03-23 Stanray Corp Loose jaw collet
DE2831140A1 (de) * 1978-07-15 1980-01-24 Hainbuch Wilh Gmbh Co Spannzange
CH659964A5 (fr) * 1984-10-18 1987-03-13 Schaeublin Sa Dispositif d'echange d'une pince de serrage dans une machine-outil.
DE3629722A1 (de) * 1986-09-01 1988-03-03 Hainbuch Wilh Gmbh Co Spannfutter
DE3937570A1 (de) * 1989-11-11 1991-05-29 Claus Schmidt Spannfutter
DE9104377U1 (de) * 1991-04-10 1991-07-04 Julius Ortlieb GmbH & Co., 7300 Esslingen Spannfutter für Schäfte

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Title
See references of WO9322091A1 *

Also Published As

Publication number Publication date
DE4214838C2 (de) 1994-04-21
WO1993022091A1 (fr) 1993-11-11
DE4214838A1 (de) 1993-11-11

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