EP0165143A1 - Vorrichtung zum Montieren und Abmontieren von Werkzeugen und Zubehör einer Werkzeugmaschine, insbesondere einer Schleifmaschine - Google Patents
Vorrichtung zum Montieren und Abmontieren von Werkzeugen und Zubehör einer Werkzeugmaschine, insbesondere einer Schleifmaschine Download PDFInfo
- Publication number
- EP0165143A1 EP0165143A1 EP85400974A EP85400974A EP0165143A1 EP 0165143 A1 EP0165143 A1 EP 0165143A1 EP 85400974 A EP85400974 A EP 85400974A EP 85400974 A EP85400974 A EP 85400974A EP 0165143 A1 EP0165143 A1 EP 0165143A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cassette
- piston
- grinding wheel
- engaged
- housing
- 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- Withdrawn
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B45/00—Means for securing grinding wheels on rotary arbors
- B24B45/003—Accessories therefor
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T483/00—Tool changing
- Y10T483/15—Tool changing with means to condition or adjust tool or tool support
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T483/00—Tool changing
- Y10T483/17—Tool changing including machine tool or component
- Y10T483/1733—Rotary spindle machine tool [e.g., milling machine, boring, machine, grinding machine, etc.]
- Y10T483/1736—Tool having specific mounting or work treating feature
- Y10T483/174—Abrading wheel
Definitions
- the present invention relates to a device for mounting and dismounting tools and accessories on a machine tool, in particular a grinding machine.
- This machining process requires frequent cutting of these grinding wheels.
- This profile is produced either by diamond coating or by a wheel with the appropriate profile.
- knobs are therefore mounted in preset cassettes which must then be positioned and locked on a support member for the knurling cassette holder.
- the object of the present invention is to provide a device allowing the rapid automatic mounting and dismounting of the grinding wheel and the wheel-holder cassette.
- the grinding wheel hub and the cassette have at one of their ends a housing having a groove in which is likely to be engaged a gripper for gripping an operating means also comprising a thrust member capable of selectively controlling locking members of the grinding wheel hub on the spindle and locking members of the wheel-holding cassette on a movable support member.
- the device according to the invention comprises a locking mechanism built into the hub which prevents weakening of the spindle carrying the grinding wheel.
- the device according to the invention can be actuated according to the installation by a simple manual grip, an automatic or semi-automatic tool such as a robot or a tool handling device.
- Such an arrangement ensures handling without risk of falling of the element on the one hand by a positive locking of the gripping device, and on the other hand, by a logical control of the different phases of assembly and disassembly.
- the jack has two chambers internally, one of which receives a first piston which is subjected on its two faces to the action of a compressed fluid, the other chamber receiving a second piston, the one of the ends extends outside the cylinder and which has an internal blind hole in which the rod of the first piston moves, the space between the bottom of the other chamber and the second piston as well as the space included in the blind hole being filled with hydraulic fluid.
- This arrangement makes it possible to equip these machines with a dynamic balancing device for the grinding wheel which can be used on all the tools and which is automatically coupled to these when they are changed.
- This means according to the invention makes it possible to couple the balancing device to the grinding wheel hub so as to ensure its rotational drive as well as its centering in a rigid manner to allow it to transmit the loads countering the vibrations.
- the balancing apparatus remains integral with a fixed element of the machine to allow disassembly of the tool without disassembly of said apparatus, this connection having to be isolated in terms of vibration so as not to harm to the operation of the whole.
- the profiling device 4 (Fig. 2 and 3) comprises a frame 7 on which is mounted at its lower part a rotary spindle having a cone 9 on which is fixed a grinding wheel for machining the parts.
- a wheel 11 intended for cutting the profile of the wheel 10
- said wheel 11 being fixed to a rotary shaft by means of bearings 13,13a, on a cassette 14, said shaft 12 being connected to a motor member for driving in rotation.
- the cassette 14 is removably mounted on a support arm 15 fixed to the lower end of a tubular beam 16 which has at its upper part a nut 17 engaged on a ball screw 18 on which is fixed a pulley 19 connected by a toothed belt 20 to a pulley 21 wedged at the end of the shaft of a motor member 22.
- This arrangement allows the rotation screw of the ball screw 18 and the nut 17 to ensure a displacement - vertical. of the cassette 14 and of the thumb wheel 11 to bring the latter closer or further away from the grinding wheel 10 for its cutting.
- the grinding wheel 10 is mounted on the cone 9 of the spindle by means of a hub 22 on which the grinding wheel 10 is tightened by a cheek 23 and screws-24.
- the grinding wheel hub 22 has a housing 25 in which is fixed in the bottom a sleeve 26 internally receiving the jaws of a clamp 27 which is engaged on a head 28 formed at the end of a sliding rod 29 fixed on a disc 30 slidably mounted in the housing 25 and subjected to the action of a stack of elastic rings 31 bearing at its other end against a shoulder of the sleeve 26.
- the rod 29 is provided with an adjustable stop 32 intended to bear against a thrust member.
- the jaws of the clamp 27 are engaged under the action of the elastic washers 31 and of the rod 29 in a groove 33 of a nose 34 formed at the end of the cone 9 for driving.
- the jaws of the clamp 27 are guided by a locking ramp 26a, shaped inside the sleeve 26.
- a groove 35 is provided in which the jaws of a gripper 36 mounted on an operating means are engaged.
- the maneuvering means consists of a movable arm 37 mounted in particular on a robot or a handling device, said arm 37 containing a jack whose cylinder 38 fixed therein has at one of its ends a screwed sleeve 39 delimiting between the latter and the end of a piston 40 which extends outside the cylinder an annular space 41 in which the jaws of the gripper 36 are mounted which are guided by a ramp 42 provided on the end of the piston 40.
- Said piston 40 also playing the role of the thrust member which acts by its end face 43 against the stop 32 integral with the rod 29 controlling the clamp 27.
- the cylinder 38 has two chambers 44 and 45 inside which are separated by a watertight partition 46.
- One of the chambers 44 receives a first piston 47 subjected on its two faces to the action of a compressed fluid, in particular compressed air.
- the first piston 47 is provided with a rod 48 which passes through the partition 46 and which is capable of extending into a blind hole 49 of the second piston 40, which slides in the second chamber 45.
- the space between the second piston 40 and the partition 46 as well as the blind hole 49 contain a hydraulic fluid.
- the device for mounting and dismounting the wheel holder operates as follows.
- the grinding wheel hub 22 being fixed on the nose 34 of the cone 9 of the spindle as shown in the upper half-view of FIG. 4, the jaws of the clamp 27 are engaged in the groove 33 of the nose 34 of the cone 9 under the action of the elastic washers 31 which act through the head 28 of the rod 29 on said jaws of the clamp.
- conduit 50 which opens at this end and which ensures both the detection of the presence of the member to be dismantled which closes the conduit 50 and the systematic cleaning of the conical surfaces.
- the piston 40 is therefore in contact with the disc 30 subjected to the elastic members and compresses the latter until the complete release of the locking system.
- the hub 22 thus removed can be handled without risk of falling
- the removal of the grinding wheel carrier hub 22 on its receiving element is carried out, after installation, by eliminating the compression effect of the elastic washers 31, thus ensuring the locking of the hub.
- the elastic rings 31 push the piston 40 to the intermediate position. Simultaneously, a cleaning blowing is carried out through the conduit 50 through all of the mechanisms. Locking of the rested hub is detected by closing the blowing duct 50.
- clamps 27 and 36 could be operated differently, in particular by a simple manual grip (such as a hub puller) or a semi-automatic tool.
- This arrangement which is shown in Figures 2, 3 and 5 comprises the cassette 14 which is slidably mounted by two of its edges 51 in two grooves 52 of the support arm 15 where it is held by locking members.
- the cassette 14 is extended on one side by members 53, 53a which delimit a housing 54 similar to that of the grinding wheel hub 22 defined above, near the opening of this housing there is provided a groove or groove 55 intended to receive the jaws of the clamp 36.
- combs 56 which guarantee the positioning of the case sette in the grooves of the support arm 15, said combs being supported by means of two rows of pins 57, 57a, against elastic washers 58, 58a.
- the pins 57, 57a each have at their upper part an inclined groove 59 in which are engaged the edges of two rods 60, 60a, slidably mounted in the body of the cassette 14 perpendicular to the axes of the pins 57, 57a, said edges being delimited by oblong holes 61, 6la formed in said rods and in which are engaged the pins 57, 57a.
- the edges of said oblong holes 61, 6la having an inclined ramp 62, the displacement of the rods 60, 60a causes. the displacement of the pins 57, 57a by compressing the elastic washers 58, 58a thus canceling their action and allowing the release of the cassette from its support.
- the sliding rods 60, 60a are subjected to the action of stacks of elastic washers 63, 63a which push said rods against the ends of a lifting beam 64 guided in the housing and having in its central part a stop 65 against which is likely to come to bear the end 43 of the piston 40 of the operating means described above.
- the cassette 14 being mounted in its support arm 15 as shown in Figures 2, 3 and 5 the pins 57, 57a under the action of the springs 58, 58a ensure the locking of the cassette in its support.
- the end of the operating means shown in FIG. 4 is engaged in the housing 54 so that the jaws of the clamp 36 engage in the groove 55 of the entrance to the housing 54.
- a balancing device 67 is installed in the axis of the wheel 10, said device being fixed by bolts 68 with the interposition of elastic elements 69, on door 66, from which it is isolated in terms of vibrations.
- the automatic opening of the door therefore releases the balancing device and the grinding wheel to be dismantled, thus in no way hampering this operation.
- the closing of the door 66 returns the balancing device 67 of the grinding wheel which carries a conical intermediate member 70 coming to engage in the conical inlet 71 of the hub 22 in order to center the device in the hub.
- the positive drive in rotation of the balancing device is provided by pins. 72 screwed in holes provided in the hub 22 and engaged in holes 73 provided in the intermediate member 70,
- pins 72 are retractable to avoid having to index their position relative to that of the holes in the hub. The slightest slip at the start of the assembly then allows them to engage in these holes thus preventing any angular offset of the assembly in operation.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
- Automatic Tool Replacement In Machine Tools (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8407789A FR2564354B1 (fr) | 1984-05-18 | 1984-05-18 | Dispositif de montage et de demontage d'outils et d'acessoires sur une machine-outil notamment une rectifieuse |
FR8407789 | 1984-05-18 |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0165143A1 true EP0165143A1 (de) | 1985-12-18 |
Family
ID=9304161
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP85400974A Withdrawn EP0165143A1 (de) | 1984-05-18 | 1985-05-17 | Vorrichtung zum Montieren und Abmontieren von Werkzeugen und Zubehör einer Werkzeugmaschine, insbesondere einer Schleifmaschine |
Country Status (4)
Country | Link |
---|---|
US (1) | US4641415A (de) |
EP (1) | EP0165143A1 (de) |
JP (1) | JPS60255340A (de) |
FR (1) | FR2564354B1 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1987001642A1 (en) * | 1985-09-17 | 1987-03-26 | Salje Ernst | Tool-changing device for grinding operations |
EP0483064A1 (de) * | 1990-10-25 | 1992-04-29 | MASCHINENFABRIK LIECHTI & CO. AG | Bearbeitungszentrum zum Schleifen von Werkstücken mit komplex geformten Oberflächen |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4942657A (en) * | 1987-03-10 | 1990-07-24 | Kanzaki Kokyukoki Mfg. Co. Ltd. | Automatic cutter change type shaving machine |
JPH01140903A (ja) * | 1987-11-24 | 1989-06-02 | Okuma Mach Works Ltd | 工具等の引上げ装置 |
US6569070B1 (en) * | 2002-01-09 | 2003-05-27 | Dallas Design And Technology, Inc. | System for changing the tooling carried by a robot |
JP4071576B2 (ja) * | 2002-08-26 | 2008-04-02 | 株式会社森精機製作所 | 工作機械 |
JP6182413B2 (ja) * | 2013-09-30 | 2017-08-16 | コマツNtc株式会社 | 工具着脱装置及び工具マガジン装置 |
CN116352554B (zh) * | 2023-06-02 | 2023-07-28 | 河北宝瑞电子科技有限公司 | 供暖管网自力式控制阀生产用加工设备 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2230234A5 (de) * | 1973-05-17 | 1974-12-13 | Ratier Sa Forest | |
FR2243778A1 (de) * | 1973-09-17 | 1975-04-11 | Infranor Sa | |
US4122755A (en) * | 1976-11-08 | 1978-10-31 | Ex-Cell-O Corporation | Self-locking chuck |
EP0027282A1 (de) * | 1979-10-12 | 1981-04-22 | Werkzeugmaschinenfabrik Oerlikon-Bührle AG | Spindelverlängerung für Werkzeugmaschinen |
FR2523492A1 (fr) * | 1982-03-22 | 1983-09-23 | Renault | Dispositif de positionnement rapide et de bridage, en particulier pour l'usinage de grosses pieces sur un centre d'usinage |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3627490A (en) * | 1969-05-29 | 1971-12-14 | Toyoda Machine Works Ltd | Grinding machine with automatic wheel exchange device |
US4084349A (en) * | 1976-07-23 | 1978-04-18 | Houdaille Industries, Inc. | Shape grinder and method |
US4528743A (en) * | 1982-01-16 | 1985-07-16 | Hauni-Werke Korber & Co. Kg | Grinding machine with magazine for spare grinding wheels |
JPS5942230A (ja) * | 1982-08-31 | 1984-03-08 | Fuji Kuki Kk | マシニングセンタで研削・研摩加工を行なう方法 |
FR2565876B2 (fr) * | 1983-09-06 | 1987-08-28 | Thibaut Sa | Dispositif pour le montage et le demontage des meules sur les machines a polir les pierres ou autres materiaux similaires |
-
1984
- 1984-05-18 FR FR8407789A patent/FR2564354B1/fr not_active Expired
-
1985
- 1985-05-17 US US06/735,045 patent/US4641415A/en not_active Expired - Fee Related
- 1985-05-17 JP JP60105734A patent/JPS60255340A/ja active Pending
- 1985-05-17 EP EP85400974A patent/EP0165143A1/de not_active Withdrawn
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2230234A5 (de) * | 1973-05-17 | 1974-12-13 | Ratier Sa Forest | |
FR2243778A1 (de) * | 1973-09-17 | 1975-04-11 | Infranor Sa | |
US4122755A (en) * | 1976-11-08 | 1978-10-31 | Ex-Cell-O Corporation | Self-locking chuck |
EP0027282A1 (de) * | 1979-10-12 | 1981-04-22 | Werkzeugmaschinenfabrik Oerlikon-Bührle AG | Spindelverlängerung für Werkzeugmaschinen |
FR2523492A1 (fr) * | 1982-03-22 | 1983-09-23 | Renault | Dispositif de positionnement rapide et de bridage, en particulier pour l'usinage de grosses pieces sur un centre d'usinage |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1987001642A1 (en) * | 1985-09-17 | 1987-03-26 | Salje Ernst | Tool-changing device for grinding operations |
EP0483064A1 (de) * | 1990-10-25 | 1992-04-29 | MASCHINENFABRIK LIECHTI & CO. AG | Bearbeitungszentrum zum Schleifen von Werkstücken mit komplex geformten Oberflächen |
US5245792A (en) * | 1990-10-25 | 1993-09-21 | Maschinenfabrik Liechti & Co. Ag | Machining center for grinding workpieces with complex shaped surfaces |
Also Published As
Publication number | Publication date |
---|---|
US4641415A (en) | 1987-02-10 |
FR2564354A1 (fr) | 1985-11-22 |
FR2564354B1 (fr) | 1986-11-14 |
JPS60255340A (ja) | 1985-12-17 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Designated state(s): AT BE CH DE GB IT LI SE |
|
17P | Request for examination filed |
Effective date: 19860609 |
|
17Q | First examination report despatched |
Effective date: 19870424 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 19891201 |
|
RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: CHARRA, JEAN PIERRE |