DE19950073A1 - Machine tool has change plate driving tool holders arranged one above the other and centrally on drive axis of change plate in unison or alternately with changeover device in drive - Google Patents
Machine tool has change plate driving tool holders arranged one above the other and centrally on drive axis of change plate in unison or alternately with changeover device in driveInfo
- Publication number
- DE19950073A1 DE19950073A1 DE19950073A DE19950073A DE19950073A1 DE 19950073 A1 DE19950073 A1 DE 19950073A1 DE 19950073 A DE19950073 A DE 19950073A DE 19950073 A DE19950073 A DE 19950073A DE 19950073 A1 DE19950073 A1 DE 19950073A1
- Authority
- DE
- Germany
- Prior art keywords
- tool
- processing machine
- change plate
- machine according
- drive
- 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.)
- Granted
Links
- 238000003754 machining Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q39/00—Metal-working machines incorporating a plurality of sub-assemblies, each capable of performing a metal-working operation
- B23Q39/02—Metal-working machines incorporating a plurality of sub-assemblies, each capable of performing a metal-working operation the sub-assemblies being capable of being brought to act at a single operating station
- B23Q39/021—Metal-working machines incorporating a plurality of sub-assemblies, each capable of performing a metal-working operation the sub-assemblies being capable of being brought to act at a single operating station with a plurality of toolheads per workholder, whereby the toolhead is a main spindle, a multispindle, a revolver or the like
- B23Q39/022—Metal-working machines incorporating a plurality of sub-assemblies, each capable of performing a metal-working operation the sub-assemblies being capable of being brought to act at a single operating station with a plurality of toolheads per workholder, whereby the toolhead is a main spindle, a multispindle, a revolver or the like with same working direction of toolheads on same workholder
- B23Q39/024—Metal-working machines incorporating a plurality of sub-assemblies, each capable of performing a metal-working operation the sub-assemblies being capable of being brought to act at a single operating station with a plurality of toolheads per workholder, whereby the toolhead is a main spindle, a multispindle, a revolver or the like with same working direction of toolheads on same workholder consecutive working of toolheads
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
- B23Q1/25—Movable or adjustable work or tool supports
- B23Q1/44—Movable or adjustable work or tool supports using particular mechanisms
- B23Q1/50—Movable or adjustable work or tool supports using particular mechanisms with rotating pairs only, the rotating pairs being the first two elements of the mechanism
- B23Q1/52—Movable or adjustable work or tool supports using particular mechanisms with rotating pairs only, the rotating pairs being the first two elements of the mechanism a single rotating pair
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
- B23Q1/25—Movable or adjustable work or tool supports
- B23Q1/44—Movable or adjustable work or tool supports using particular mechanisms
- B23Q1/50—Movable or adjustable work or tool supports using particular mechanisms with rotating pairs only, the rotating pairs being the first two elements of the mechanism
- B23Q1/54—Movable or adjustable work or tool supports using particular mechanisms with rotating pairs only, the rotating pairs being the first two elements of the mechanism two rotating pairs only
- B23Q1/5406—Movable or adjustable work or tool supports using particular mechanisms with rotating pairs only, the rotating pairs being the first two elements of the mechanism two rotating pairs only a single rotating pair followed perpendicularly by a single rotating pair
- B23Q1/5418—Movable or adjustable work or tool supports using particular mechanisms with rotating pairs only, the rotating pairs being the first two elements of the mechanism two rotating pairs only a single rotating pair followed perpendicularly by a single rotating pair followed parallelly by a single rotating pair
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
- B23Q1/25—Movable or adjustable work or tool supports
- B23Q1/44—Movable or adjustable work or tool supports using particular mechanisms
- B23Q1/50—Movable or adjustable work or tool supports using particular mechanisms with rotating pairs only, the rotating pairs being the first two elements of the mechanism
- B23Q1/54—Movable or adjustable work or tool supports using particular mechanisms with rotating pairs only, the rotating pairs being the first two elements of the mechanism two rotating pairs only
- B23Q1/5406—Movable or adjustable work or tool supports using particular mechanisms with rotating pairs only, the rotating pairs being the first two elements of the mechanism two rotating pairs only a single rotating pair followed perpendicularly by a single rotating pair
- B23Q1/5431—Movable or adjustable work or tool supports using particular mechanisms with rotating pairs only, the rotating pairs being the first two elements of the mechanism two rotating pairs only a single rotating pair followed perpendicularly by a single rotating pair followed parallelly by a single sliding pair
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q39/00—Metal-working machines incorporating a plurality of sub-assemblies, each capable of performing a metal-working operation
- B23Q2039/004—Machines with tool turrets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q2230/00—Special operations in a machine tool
- B23Q2230/006—Machining both ends of a workpiece consecutively
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Automatic Tool Replacement In Machine Tools (AREA)
Abstract
Description
Die Neuerung betrifft eine Werkzeugbearbeitungsmaschine mit einem Schaltteller, wie er in CNC-Rundtaktfertigungsautomaten zur Werkzeugbearbeitung eingesetzt wird.The innovation affects a machine tool with an indexing table, as used in CNC rotary production machines is used for tool processing.
Der Schaltteller weist hierbei eine Antriebseinrichtung zum Antrieb einer auf der Antriebsachse des Schalttellers sitzen den Spannzangentrommel auf. Die Spannzangentrommel weist eine zumindest annähernd zylindrische Gestalt auf mit Werkzeugauf nahmeöffnungen, die an ihrer Umfangsfläche verteilt sind. Eine Spannzangentrommel kann beispielsweise sechzehn Bearbeitungs stationen haben. Übliche Größenabmessungen solcher Spannzan gentrommeln liegen zwischen 800 und 1400 mm.The switch plate has a drive device for Drive one sit on the drive shaft of the table top the collet drum. The collet drum has one at least approximately cylindrical shape with a tool receiving openings that are distributed on their peripheral surface. A Collet drum can for example sixteen machining have stations. Usual size dimensions of such a collet Drums are between 800 and 1400 mm.
In diese Werkstückaufnahmen werden die zu bearbeitenden Werk stücke eingespannt und von den Bearbeitungseinheiten bearbei tet. Nach einem erfolgten Arbeitsgang wird die Spannzangen trommel über den Spannteller zur nächsten Bearbeitungsstation gedreht, so daß der nächste Bearbeitungsschritt am Werkstück erfolgen kann.The work to be machined is in these workpiece holders pieces clamped and machined by the processing units tet. After a successful operation, the collets are drum over the clamping plate to the next processing station rotated so that the next machining step on the workpiece can be done.
Problematisch bei dieser Verfahrensweise ist die sogenannte Nebenzeit, d. h. Totzeit, während der das Werkstück nicht bearbeitet werden kann. Dies liegt daran, weil die Spannzan gentrommel in dieser Zeit gedreht werden muß. Diese Zeit wird auch häufig als "Schalttellernebenzeit" bezeichnet.The problem with this procedure is the so-called Non-productive time, d. H. Dead time during which the workpiece is not can be edited. This is because the collet drum must be rotated during this time. This time will also often referred to as "switch plate non-productive time".
Hier setzt die vorgeschlagene Neuerung an.This is where the proposed innovation comes in.
Es wird eine Werkzeugbearbeitungsmaschine mit einem Schalttel ler vorgeschlagen, der mindestens zwei Spannzangentrommeln antreibt. Die Spannzangentrommeln sind hierbei übereinander angeordnet und sitzen auf der Antriebsachse des Schalttellers auf. It becomes a machine tool with a switch ler suggested the at least two collet drums drives. The collet drums are one above the other arranged and sit on the drive axis of the table top on.
Der wesentliche Vorteil dieser Idee besteht darin, daß die Nebenzeiten auf die Zeit für das Vertikalverfahren der Be arbeitungsspindel von der ersten zur zweiten Spannzangentrom mel oder umgekehrt reduziert werden kann. Während z. B. auf der unteren Spannzangentrommel gearbeitet wird, kann die obere Spannzangentrommel eine Position weiterschalten. Ein weiterer Vorteil besteht darin, daß einfachere Werkzeugaufnahmeöff nungen in den Spannzangentrommeln vorgesehen werden können. Dies deshalb, weil beispielsweise in der unteren Spannzangen trommel lediglich solche Öffnungen für die Werkzeugaufnahme vorzusehen sind, die ein Einstecken des Werkzeuges von vorn erlauben und in die andere Spannzangentrommel Werkzeugauf nahmeöffnungen aufgenommen sind, die die Aufnahme des Werkzeu ges von der rückwärtigen Seite ermöglichen.The main advantage of this idea is that the Non-productive times for the vertical process of the Be working spindle from the first to the second collet flow mel or vice versa can be reduced. During e.g. B. on the lower collet drum is working, the upper one Advance the collet drum one position. Another The advantage is that simpler tool holder openings can be provided in the collet drums. This is because, for example, in the lower collets only drum such openings for the tool holder are to be provided, the insertion of the tool from the front allow and in the other collet drum tool take-up openings are included, which the tool holder enable ges from the rear side.
Eine Prinzipskizze der vorgeschlagenen Werkzeugbearbeitungs maschine mit übereinander angeordneten Spannzangentrommeln ist in der beiliegenden Figur dargestellt.A basic sketch of the proposed tool machining machine with collet chucks arranged one above the other shown in the accompanying figure.
Die Vorteile der vorgeschlagenen Werkzeugbearbeitungsmaschine
werden nachfolgend am Beispiel einer Werkzeugbearbeitungs
maschine mit sechzehn Stationen näher beschrieben:
Eine heute übliche Schalttellermaschine mit sechzehn Stationen
weist sechzehn Spannvorrichtungen und damit sechzehn Werkzeug
aufnahmeöffnungen am Umfangsrand der Spannzangentrommel auf.
Die einzelnen Spannzangentrommeln liegen hierbei auf gleicher
Höhenlinie und sind im Radius um je 16/360° aufgeteilt an
geordnet. Eine solche Anordnung ist verhältnismäßig voluminös
und groß und hat also einen großen Durchmesser. Dieser große
Durchmesser führt zugleich zu einem verhältnismäßig hohen
Massenträgheitsmoment und damit zu länger notwendigen Schalt
zeiten. Die Schaltzeit und die sich daraus ergebende Umspann
zeit liegt bei ca. 1,5 sec., die als reine unproduktive Neben
zeit in die Stückzeitberechnung mit eingehen.The advantages of the proposed machine tool are described below using the example of a machine tool with sixteen stations:
A switch plate machine common today with sixteen stations has sixteen clamping devices and thus sixteen tool receiving openings on the peripheral edge of the collet drum. The individual collet drums lie on the same contour and are arranged in a radius of 16/360 °. Such an arrangement is relatively voluminous and large and therefore has a large diameter. This large diameter also leads to a relatively high moment of inertia and thus to longer switching times. The switching time and the resulting span time are approx. 1.5 seconds, which are included in the piece time calculation as pure unproductive additional time.
Durch die vorgeschlagene übereinanderliegende Anordnung wären zur Bearbeitung von sechzehn Werkzeugen nur zwei über einander angeordnete Spannzangentrommeln mit jeweils acht Stationen notwendig. Dies bedingt einen kleineren Durchmesser der beiden Spannzangentrommeln, was vorteilhafterweise zu einem kleineren Massenträgheitsmoment und schnelleren Schaltzeiten führt.The proposed arrangement would be one above the other for machining sixteen tools only two on top of each other arranged collet drums with eight stations each necessary. This requires a smaller diameter of the two Collet drums, which advantageously results in a smaller one Mass moment of inertia and faster switching times leads.
Je nach Aufbau der Werkzeugbearbeitungseinrichtung kann durch vertikales Verfahren der Bearbeitungsmaschinen zuerst oben und dann auf der unteren Spannzangenvorrichtung gearbeitet werden. Somit wird die im Eilgang zu verfahrende vertikale Bewegung der Bearbeitungseinrichtung, z. B. ein Bohrer, der in das in der Werkzeugaufnahmevorrichtung der Spannzangentrommel sitzen de Werkstück ein Loch bohrt, als Nebenzeit zu rechnen sein. Des weiteren kann durch wechselweise Schaltung der acht oberen und acht unteren Vorrichtungen die als Nebenzeit geltende Schaltzeit in der Stückzeitkalkulation weitgehend vernachläs sigt werden.Depending on the structure of the tool processing device, through vertical processing of the processing machines first above and then work on the lower collet device. Thus the vertical movement to be traversed in rapid traverse the processing device, e.g. B. a drill in the in the tool holder of the collet drum de workpiece drills a hole, can be counted as non-productive time. Furthermore, by alternately switching the eight upper and eight lower devices that count as off-time Switching time largely neglected in the piece time calculation be sigt.
Weitere Vorteile der vorgeschlagenen Werkzeugbearbeitungs
maschine sind:
Further advantages of the proposed machine tool are:
- 1. Der obere und untere Spannvorrichtungsring wird wechsel weise geschaltet, so daß die Schaltzeit somit keine Ne benzeit mehr ist, sondern in die Hauptzeit mit eingeht. Dies bedingt jedoch, daß am Beispiel von acht Spannvor richtungen ein Werkstück mit acht Stationen fertig bear beitet werden kann. Es laufen somit immer zwei Werkstücke gleichzeitig durch die Werkzeugbearbeitungsmaschine.1. The upper and lower jig ring will change switched wise, so that the switching time is therefore no Ne time is more, but goes into the main time. However, this requires that the example of eight Spannvor directions a workpiece with eight stations can be processed. Two workpieces always run simultaneously through the machine tool.
- 2. Der obere und untere Spannvorrichtungsring, also die Spannzangentrommeln, werden gleichzeitig geschaltet. Hierdurch ergibt sich eine Konfiguration um zwei Werk stücke parallel zu bearbeiten. Dies ergibt eine doppelte Ausbringung an Werkstücken und damit eine verdoppelte Stückleistung.2. The upper and lower clamping device ring, ie the Collet drums are switched simultaneously. This results in a configuration by two plants to process pieces in parallel. This results in a double Output on workpieces and thus a doubled Unit performance.
- 3. Die beiden Spannzangentrommeln werden gleichzeitig ge schaltet. Hierdurch ergibt sich eine Konfiguration an der unteren Spannzangentrommel, bei der die Vorderseite des Werkstückes bearbeitet wird. An der oberen Spannzangen trommel kann dagegen das Werkstück mit der Vorderseite eingespannt und daher an der Rückseite bearbeitet werden. Dies ergibt eine komplette Bearbeitung in einem Maschi nendurchlauf.3. The two collet drums are ge simultaneously switches. This results in a configuration on the lower collet drum, at which the front of the Workpiece is machined. On the top collets In contrast, the workpiece can drum with the front clamped and therefore processed on the back. This results in complete machining in one machine throughput.
Insgesamt wird durch die vorgeschlagene Werkzeugbearbeitungs maschine ein kleinerer Bauraum erzielt, wodurch einerseits der Platzbedarf für die Maschine erniedrigt werden kann und ande rerseits die Fixkosten der Maschine reduziert werden können. Overall, the proposed tool machining machine achieves a smaller installation space, which means that the Space requirements for the machine can be reduced and others on the one hand, the fixed costs of the machine can be reduced.
11
Schaltteller
Indexing table
33rd
erste Spannzangentrommel/Werkzeugaufnahme
first collet drum / tool holder
55
zweite Spannzangentrommel/Werkzeugaufnahme
second collet drum / tool holder
77
Werkzeugaufnahmeöffnungen
Tool holder openings
1010th
Zuführeinrichtungen für die Spannzangentrommeln
Feeding devices for the collet drums
Claims (8)
- - Einem Schaltteller (1);
- - mindestens zwei von diesen Schalttellern (1) an getriebenen Werkzeugaufnahmen (3, 5);
- - die Werkzeugaufnahmen (3, 5) sind übereinander ange ordnet und sitzen jeweils zentrisch auf der Antriebsachse des Schalttellers (1).
- - A switch plate ( 1 );
- - At least two of these switch plates ( 1 ) on driven tool holders ( 3 , 5 );
- - The tool holders ( 3 , 5 ) are arranged one above the other and each sit centrally on the drive axis of the table top ( 1 ).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE29924626U DE29924626U1 (en) | 1999-10-18 | 1999-10-18 | Machine tool has change plate driving tool holders arranged one above the other and centrally on drive axis of change plate in unison or alternately with changeover device in drive |
| DE19950073A DE19950073B4 (en) | 1999-10-18 | 1999-10-18 | Tool processing machine with an indexing table |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19950073A DE19950073B4 (en) | 1999-10-18 | 1999-10-18 | Tool processing machine with an indexing table |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE19950073A1 true DE19950073A1 (en) | 2001-04-26 |
| DE19950073B4 DE19950073B4 (en) | 2004-07-08 |
Family
ID=7925997
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19950073A Expired - Fee Related DE19950073B4 (en) | 1999-10-18 | 1999-10-18 | Tool processing machine with an indexing table |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE19950073B4 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1452269A1 (en) * | 2003-02-25 | 2004-09-01 | Bacci Paolino Di Bacci Agostino | Toolhead for machine tools or work centers and machine comprising said head |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2435947A1 (en) * | 1973-07-28 | 1975-02-06 | Toyoda Machine Works Ltd | MACHINE TOOL WITH TURNING HEAD FOR MULTI-SPINDLE UNITS AND AUTOMATIC TOOL CHANGING DEVICE |
| DE2848668A1 (en) * | 1978-11-09 | 1980-05-14 | Guehring Gottlieb Fa | MACHINING MACHINE |
-
1999
- 1999-10-18 DE DE19950073A patent/DE19950073B4/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2435947A1 (en) * | 1973-07-28 | 1975-02-06 | Toyoda Machine Works Ltd | MACHINE TOOL WITH TURNING HEAD FOR MULTI-SPINDLE UNITS AND AUTOMATIC TOOL CHANGING DEVICE |
| DE2848668A1 (en) * | 1978-11-09 | 1980-05-14 | Guehring Gottlieb Fa | MACHINING MACHINE |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1452269A1 (en) * | 2003-02-25 | 2004-09-01 | Bacci Paolino Di Bacci Agostino | Toolhead for machine tools or work centers and machine comprising said head |
Also Published As
| Publication number | Publication date |
|---|---|
| DE19950073B4 (en) | 2004-07-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE60037400T2 (en) | COMBINED TURNING MACHINE WITH NC CONTROL | |
| DE3884196T2 (en) | MACHINE TOOL. | |
| DE19503482C2 (en) | Machine tool with a stand on which two headstocks can be moved independently of one another | |
| DE2523751C2 (en) | Turret lathe | |
| EP0368996B1 (en) | Horizontal boring and milling machine | |
| DE3921042A1 (en) | MACHINE TOOL | |
| DE2819502A1 (en) | UNIVERSAL MACHINE TOOL | |
| DE3320940A1 (en) | TWO-SPINDLE LATHE | |
| EP0064766A2 (en) | Method and device for working pieces with rotational symmetry | |
| EP0260692B1 (en) | Machine tool with a drilling and milling spindle carrier movable in the z direction on a machine body | |
| EP0807490A2 (en) | Multiple-spindle lathe | |
| DE1777439A1 (en) | MULTI-PURPOSE MACHINE TOOL | |
| DE69102511T2 (en) | MACHINE TOOL, ESPECIALLY FOR DECOLLETING. | |
| DE2409773B2 (en) | CURVELESS PROGRAM-CONTROLLED MULTI-SPINDLE AUTOMATIC LATHE | |
| EP0457016B1 (en) | Grinding machine involving a grinding unit comprising one or more spindles disposed on a machine bed | |
| EP0379723B1 (en) | Groove machining lathe equipped with tools | |
| DE19950073A1 (en) | Machine tool has change plate driving tool holders arranged one above the other and centrally on drive axis of change plate in unison or alternately with changeover device in drive | |
| DE1602949C3 (en) | Multi-spindle automatic lathe | |
| DE10235518A1 (en) | Workpiece machining process involves positioning workpiece in first zone, machining with first tool pair on each side of theoretical plane | |
| DE3826985C1 (en) | ||
| DE2620477C2 (en) | Vibratory grinding or polishing machine | |
| EP0028705A1 (en) | Process for machining a rotatation-symmetrical metal workpiece, and apparatus for carrying out this process | |
| DE29924626U1 (en) | Machine tool has change plate driving tool holders arranged one above the other and centrally on drive axis of change plate in unison or alternately with changeover device in drive | |
| DE4022572A1 (en) | LATHE WITH DOUBLE REVOLVER | |
| EP0524986A1 (en) | Automatic multi-spindle lathe |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| OP8 | Request for examination as to paragraph 44 patent law | ||
| 8364 | No opposition during term of opposition | ||
| 8339 | Ceased/non-payment of the annual fee |