CA2268202A1 - Miller cutterhead with two continuous rotations and direct drive - Google Patents
Miller cutterhead with two continuous rotations and direct drive Download PDFInfo
- Publication number
- CA2268202A1 CA2268202A1 CA002268202A CA2268202A CA2268202A1 CA 2268202 A1 CA2268202 A1 CA 2268202A1 CA 002268202 A CA002268202 A CA 002268202A CA 2268202 A CA2268202 A CA 2268202A CA 2268202 A1 CA2268202 A1 CA 2268202A1
- Authority
- CA
- Canada
- Prior art keywords
- cutterhead
- spindle
- miller
- motors
- slide
- 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.)
- Abandoned
Links
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
- 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
-
- 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
- B23Q1/5412—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 perpendicularly 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
- B23Q5/00—Driving or feeding mechanisms; Control arrangements therefor
- B23Q5/02—Driving main working members
- B23Q5/04—Driving main working members rotary shafts, e.g. working-spindles
- B23Q5/10—Driving main working members rotary shafts, e.g. working-spindles driven essentially by electrical means
-
- 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
- B23Q2210/00—Machine tools incorporating a specific component
- B23Q2210/004—Torque motors
-
- 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
- B23Q2220/00—Machine tool components
- B23Q2220/006—Spindle heads
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
- Turning (AREA)
Abstract
Miller cutterhead with two continuous rotations and direct drive, of the kind that is comprised of slide, cutterhead and main spindle, where: a)-. the cutterhead is a modular element and has a first and second supplementary rotation spindle, to convert a three-spindle grinding centre or milling machine into a five spindle one; b)-. it has a first motor coupled directly onto the first supplementary rotation spindle with the stator fixed on the slide and with its motor fixed on the cutterhead; and c)-. it has a second motor coupled directly onto the second rotation spindle. The first and second motors are high torque flat motors with a low speed range; in particular direct servomotors, without any intermediate transmission or reduction.
Application in machine-tool.
Application in machine-tool.
Description
"MILLER CUTTERHEAD WITH TWO CONTINUOUS
ROTATIONS AND DIRECT DRIVE".
The object of this invention is a cutterhead that provides the tool with two continuous additional rotations in order to convert a three-spindle grinding centre or milling machine into a five-spindle one. With this solution a traditional vertical milling machine can be transformed into a five-spindle one, all of them in the tool.
Of the two additional rotations that the cutterhead of the invention provides, one of them is parallel to the table and the other perpendicular to the table.
Traditionally, these rotations of the tool have been generated by motors, located on the upper part of the ram, accompanied by some transmissions that provide the rotation at the tip of the tool.
The solution adopted by this cutterhead is to use high torque direct motors with relatively low speed ranges, which permits the location or coupling of the motors directly on the rotation spindle, providing a more compact solution.
This cutterhead is a modular element that can be considered as an accessory for the machine.
In this invention high torque flat motors have been used with low speed ranges; in particular direct servomotors, without any intermediate transmission or reduction, which produce rotary movements, providing the assembly with a good control and high dynamics.
The advantages or dynamic features achieved with the invention both in accelerations and limit speeds represent an increase of up to 100% respect to the currently known cutterheads.
This invention advocates a miller cutterhead with two rotations and direct drive, comprised of a slide, cutterhead and main spindle, and it is characterised because the cutterhead is a modular element and has a first and second supplementary rotation spindle, to make a three-spindle grinding centre or milling machine into a five-spindle one; because it has a first motor coupled directly on the first supplementary rotation spindle with its stator fixed in the slide and with its rotor fixed in the cutterhead; and because it has a second motor coupled directly in the second rotation spindle.
It is also characterised because the first and second motors are high torque flat motors with a low speed range; in particular direct servomotors, without any intermediate transmission or reduction.
This cutterhead is designed to be applied in medium-sized or large grinding centres and milling machines, where it is necessary to work with five spindles. These machines must include numerical controls with high features and with capacity to interpolate five spindles at the same time.
It will preferably be applied on vertical grinding centres, but it can be implanted additionally on horizontal centres.
The advantages provided by the proposed solution of the miller cutterhead with two continuous rotations and direct drive, targeted by this invention are:
. Simplification of the design on eliminating mechanical transmissions.
. More compact solution, minimising volume and weight.
. Great rigidity of the cutterhead opposed to traditional solution.
. Greater reliability inherent to the reduction of the number of components.
. Elimination of the transmission chains . Elimination of the mechanical hysteresis.
. High angular acceleration because this corresponds directly with that of the motor.
. Reduction of the inertia.
ROTATIONS AND DIRECT DRIVE".
The object of this invention is a cutterhead that provides the tool with two continuous additional rotations in order to convert a three-spindle grinding centre or milling machine into a five-spindle one. With this solution a traditional vertical milling machine can be transformed into a five-spindle one, all of them in the tool.
Of the two additional rotations that the cutterhead of the invention provides, one of them is parallel to the table and the other perpendicular to the table.
Traditionally, these rotations of the tool have been generated by motors, located on the upper part of the ram, accompanied by some transmissions that provide the rotation at the tip of the tool.
The solution adopted by this cutterhead is to use high torque direct motors with relatively low speed ranges, which permits the location or coupling of the motors directly on the rotation spindle, providing a more compact solution.
This cutterhead is a modular element that can be considered as an accessory for the machine.
In this invention high torque flat motors have been used with low speed ranges; in particular direct servomotors, without any intermediate transmission or reduction, which produce rotary movements, providing the assembly with a good control and high dynamics.
The advantages or dynamic features achieved with the invention both in accelerations and limit speeds represent an increase of up to 100% respect to the currently known cutterheads.
This invention advocates a miller cutterhead with two rotations and direct drive, comprised of a slide, cutterhead and main spindle, and it is characterised because the cutterhead is a modular element and has a first and second supplementary rotation spindle, to make a three-spindle grinding centre or milling machine into a five-spindle one; because it has a first motor coupled directly on the first supplementary rotation spindle with its stator fixed in the slide and with its rotor fixed in the cutterhead; and because it has a second motor coupled directly in the second rotation spindle.
It is also characterised because the first and second motors are high torque flat motors with a low speed range; in particular direct servomotors, without any intermediate transmission or reduction.
This cutterhead is designed to be applied in medium-sized or large grinding centres and milling machines, where it is necessary to work with five spindles. These machines must include numerical controls with high features and with capacity to interpolate five spindles at the same time.
It will preferably be applied on vertical grinding centres, but it can be implanted additionally on horizontal centres.
The advantages provided by the proposed solution of the miller cutterhead with two continuous rotations and direct drive, targeted by this invention are:
. Simplification of the design on eliminating mechanical transmissions.
. More compact solution, minimising volume and weight.
. Great rigidity of the cutterhead opposed to traditional solution.
. Greater reliability inherent to the reduction of the number of components.
. Elimination of the transmission chains . Elimination of the mechanical hysteresis.
. High angular acceleration because this corresponds directly with that of the motor.
. Reduction of the inertia.
To reach a better understanding of the object of this invention, a preferential form of practical execution is represented on the drawings, susceptible to accessory changes that will not change the basic design.
Figure 1 is a schematic representation of a practical execution of the cutterhead targeted by this invention.
Below an example of a practical execution of this invention is described, but it is not limiting.
In figure 1 the slide (1), cutterhead (2) and main spindle (3) have been represented in a coaxial mode.
Milling machines with a slide ( 1 ) equipped with movement on three spindles and a cutterhead (2) with movement on another two supplementary spindles (B) (C) are already known.
For the movement of the supplementary spindle (B) traditionally there is a first motor (M'2) (not represented) placed on the slide ( 1 ) and a second motor (M'2) (not represented) placed on the cutterhead (2), requiring a transmission complex between them both and the relative rotation spindles for the tool (4) to achieve the desired movements.
Figure 1 shows that, in accordance with the invention, the first motor (Ml) to achieve the supplementary rotation (B) has its stator (5) fixed to the slide (1) and the rotor (6) fixed to the cutterhead (2) and on the spindle (B) of the supplementary rotation.
The second motor (M2) is placed on the cutterhead (2) in a coaxial fashion and on the spindle itself ( C) of the supplementary rotation to be achieved.
It can be seen that with this arrangement the transmissions disappear so the dynamic features of the machine are substantially improved.
The first and second motors (M 1 ), (M2) are high torque flat motors with a low speed range which, as already mentioned, are coupled directly onto the relative rotation spindle (B), (C) providing a more compact solution.
In particular, the first and second motors (M1), (M2) are direct servomotors and the speed ranges used are relatively low, up to 120 r.p.m.
Of the two supplementary rotations or spindles (B) ( C), one of them is parallel to the work table (not represented) and the other is perpendicular to it. As a result, the servomotors (M 1 ), (M2) are located coaxially and radially with the electric boring bar.
It has also been arranged for the main motor (M3) or electric boring bar to be placed coaxially to the main spindle (3).
Figure 1 is a schematic representation of a practical execution of the cutterhead targeted by this invention.
Below an example of a practical execution of this invention is described, but it is not limiting.
In figure 1 the slide (1), cutterhead (2) and main spindle (3) have been represented in a coaxial mode.
Milling machines with a slide ( 1 ) equipped with movement on three spindles and a cutterhead (2) with movement on another two supplementary spindles (B) (C) are already known.
For the movement of the supplementary spindle (B) traditionally there is a first motor (M'2) (not represented) placed on the slide ( 1 ) and a second motor (M'2) (not represented) placed on the cutterhead (2), requiring a transmission complex between them both and the relative rotation spindles for the tool (4) to achieve the desired movements.
Figure 1 shows that, in accordance with the invention, the first motor (Ml) to achieve the supplementary rotation (B) has its stator (5) fixed to the slide (1) and the rotor (6) fixed to the cutterhead (2) and on the spindle (B) of the supplementary rotation.
The second motor (M2) is placed on the cutterhead (2) in a coaxial fashion and on the spindle itself ( C) of the supplementary rotation to be achieved.
It can be seen that with this arrangement the transmissions disappear so the dynamic features of the machine are substantially improved.
The first and second motors (M 1 ), (M2) are high torque flat motors with a low speed range which, as already mentioned, are coupled directly onto the relative rotation spindle (B), (C) providing a more compact solution.
In particular, the first and second motors (M1), (M2) are direct servomotors and the speed ranges used are relatively low, up to 120 r.p.m.
Of the two supplementary rotations or spindles (B) ( C), one of them is parallel to the work table (not represented) and the other is perpendicular to it. As a result, the servomotors (M 1 ), (M2) are located coaxially and radially with the electric boring bar.
It has also been arranged for the main motor (M3) or electric boring bar to be placed coaxially to the main spindle (3).
Claims (2)
1.- Miller cutterhead with two continuous rotations and direct drive, comprised of a slide, cutterhead and main spindle, characterised because the cutterhead is a modular element and has a first and second supplementary rotation spindle, to convert a three-spindle grinding centre or milling machine into a five-spindle one; because it has a first motor coupled directly onto the first supplementary rotation spindle with its stator fixed on the slide and with its rotor fixed on the cutterhead; and because it has a second motor coupled directly onto the second rotation spindle.
2.- Miller cutterhead with two continuous rotations and direct drive, according to above claim, characterised because the first and second motors are high torque flat motors with a low speed range; in particular direct servomotors, without any intermediate transmission or reduction.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP99500047A EP1038630A1 (en) | 1999-03-26 | 1999-03-26 | Milling head with direct drive for continuous rotations around two axles |
| CA002268202A CA2268202A1 (en) | 1999-03-26 | 1999-04-07 | Miller cutterhead with two continuous rotations and direct drive |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP99500047A EP1038630A1 (en) | 1999-03-26 | 1999-03-26 | Milling head with direct drive for continuous rotations around two axles |
| CA002268202A CA2268202A1 (en) | 1999-03-26 | 1999-04-07 | Miller cutterhead with two continuous rotations and direct drive |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2268202A1 true CA2268202A1 (en) | 2000-10-07 |
Family
ID=32094353
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002268202A Abandoned CA2268202A1 (en) | 1999-03-26 | 1999-04-07 | Miller cutterhead with two continuous rotations and direct drive |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP1038630A1 (en) |
| CA (1) | CA2268202A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6951440B2 (en) * | 2000-10-17 | 2005-10-04 | Fpt Industrie S.P.A. | Double-rotatable spindle head for machine tools |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10047917B4 (en) * | 2000-09-27 | 2004-06-03 | Siemens Ag | Gearless, integrated spindle drive for an industrial processing machine |
| DE20204365U1 (en) * | 2002-03-19 | 2002-05-29 | Deckel Maho Pfronten GmbH, 87459 Pfronten | Spindle head for a universal milling machine |
| DE102005006221A1 (en) * | 2005-02-10 | 2006-08-17 | Benz Gmbh Werkzeug- U. Maschinenbau Kg | Driven tool holder |
| EP2500130A3 (en) * | 2006-08-23 | 2012-12-19 | Tsudakoma Kogyo Kabushiki Kaisha | Machining head for machine tool |
| DE502007000514D1 (en) * | 2007-10-24 | 2009-04-23 | Wenzel Praez Gmbh | Multi-axis turret with integrated control device and coordinate measuring machine with such a multi-axis turret |
| CN101157254B (en) * | 2007-11-12 | 2011-09-21 | 沈阳建筑大学 | A complex work head for multifunctional stone machining center |
| US8668412B2 (en) * | 2008-03-04 | 2014-03-11 | Makino Milling Machine Co., Ltd. | Machining method and machine tool |
| ITPC20080036A1 (en) * | 2008-09-26 | 2010-03-27 | Linea Srl | HEAD FOR MULTI-TURNING MILLING AND MILLING OPERATED BY TORQUE MOTORS |
| CN102962711B (en) * | 2012-11-12 | 2014-12-17 | 中捷机床有限公司 | High-rigidity universal milling head with automatic rotating B shaft |
| CN114535678B (en) * | 2022-03-07 | 2023-03-24 | 中国北方车辆研究所 | Coaxial double-division universal milling head device with high integration degree |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63295143A (en) * | 1987-05-26 | 1988-12-01 | Mitsubishi Heavy Ind Ltd | Attachment for multiaxis-control machine tool |
| DE3815380A1 (en) * | 1988-05-05 | 1989-11-16 | Deckel Ag Friedrich | TURNING DEVICE FOR DRILLING AND MILLING MACHINES |
| DE4301217A1 (en) * | 1993-01-19 | 1994-07-21 | Baljer & Zembrod | CNC-controlled woodworking system, especially for long workpieces such as beams |
| US5584621A (en) * | 1995-06-13 | 1996-12-17 | Bertsche Engineering Corp. | Direct drive multiple axes rotary spindle head for milling machine |
-
1999
- 1999-03-26 EP EP99500047A patent/EP1038630A1/en not_active Withdrawn
- 1999-04-07 CA CA002268202A patent/CA2268202A1/en not_active Abandoned
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6951440B2 (en) * | 2000-10-17 | 2005-10-04 | Fpt Industrie S.P.A. | Double-rotatable spindle head for machine tools |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1038630A1 (en) | 2000-09-27 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Dead |