WO2017158090A1 - Cartesian machine tool with horizontal slide and cantilevered machining head, and slide carriage for such machine tool - Google Patents

Cartesian machine tool with horizontal slide and cantilevered machining head, and slide carriage for such machine tool Download PDF

Info

Publication number
WO2017158090A1
WO2017158090A1 PCT/EP2017/056234 EP2017056234W WO2017158090A1 WO 2017158090 A1 WO2017158090 A1 WO 2017158090A1 EP 2017056234 W EP2017056234 W EP 2017056234W WO 2017158090 A1 WO2017158090 A1 WO 2017158090A1
Authority
WO
WIPO (PCT)
Prior art keywords
slide
translation
machine tool
vertical translation
carriage
Prior art date
Application number
PCT/EP2017/056234
Other languages
French (fr)
Inventor
Gabriele Piccolo
Original Assignee
Hpt Sinergy S.R.L.
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 Hpt Sinergy S.R.L. filed Critical Hpt Sinergy S.R.L.
Publication of WO2017158090A1 publication Critical patent/WO2017158090A1/en

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
    • B23Q1/56—Movable or adjustable work or tool supports using particular mechanisms with sliding pairs only, the sliding pairs being the first two elements of the mechanism
    • B23Q1/60—Movable or adjustable work or tool supports using particular mechanisms with sliding pairs only, the sliding pairs being the first two elements of the mechanism two sliding pairs only, the sliding pairs being the first two elements of the mechanism
    • B23Q1/62—Movable or adjustable work or tool supports using particular mechanisms with sliding pairs only, the sliding pairs being the first two elements of the mechanism two sliding pairs only, the sliding pairs being the first two elements of the mechanism with perpendicular axes, e.g. cross-slides
    • B23Q1/621—Movable or adjustable work or tool supports using particular mechanisms with sliding pairs only, the sliding pairs being the first two elements of the mechanism two sliding pairs only, the sliding pairs being the first two elements of the mechanism with perpendicular axes, e.g. cross-slides a single sliding pair followed perpendicularly by a single sliding pair
    • B23Q1/626—Movable or adjustable work or tool supports using particular mechanisms with sliding pairs only, the sliding pairs being the first two elements of the mechanism two sliding pairs only, the sliding pairs being the first two elements of the mechanism with perpendicular axes, e.g. cross-slides a single sliding pair followed perpendicularly by a single sliding pair followed perpendicularly 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
    • B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
    • B23Q11/001—Arrangements compensating weight or flexion on parts of the machine
    • B23Q11/0028—Arrangements compensating weight or flexion on parts of the machine by actively reacting to a change of the configuration of the machine

Definitions

  • the present invention relates to a Cartesian machine tool, of the type with a horizontal slide and a machining head supported in a cantilever manner by the slide.
  • the post further, slides on a footing in a third direction, perpendicular to the other two.
  • the aim of the present invention is to provide a Cartesian machine tool that is capable of restoring the correct configuration of a machining head, limiting to the minimum the deformation of the sliding guides of the slide, and in general without introducing deformations into the means of guiding the movable elements of the machine.
  • an object of the present invention is to provide a Cartesian machine tool in which the position of the machining head can be rapidly corrected with respect to any deviations with respect to a preset position.
  • Another object of the present invention is to provide a Cartesian machine tool with operational performance levels that are not lower than conventional Cartesian machine tools.
  • Another object of the present invention is to provide a slide carriage for a Cartesian machine tool as per the main aim.
  • Cartesian machine tool of the type with a horizontal slide and a machining head supported in a cantilever manner by said slide, according to claim 1, and also by a slide carriage according to claim 11.
  • FIG. 1 is a perspective view of a Cartesian machine tool according to the invention.
  • FIG. 2 is a perspective view of the carriage and the slide of a Cartesian machine tool according to the invention
  • FIG. 3 is a perspective view of a slide of a Cartesian machine tool according to the invention.
  • FIGS. 4 and 5 are schematic views of the operation of the slide carriage of the Cartesian machine tool according to the invention.
  • FIG. 6 is a front elevation view of a carriage with slide of a Cartesian machine tool according to the invention.
  • FIG. 7 is a cross-sectional side view of a carriage and slide, taken along the line VII- VII of Figure 6.
  • Cartesian machine tool according to the invention is generally designated with the reference numeral 10.
  • the Cartesian machine tool 10 is of the type with a horizontal slide 11 and a machining head 12 supported in a cantilever manner by the slide 11.
  • the Cartesian machine tool 10 comprises:
  • a post 15 which comprises two opposite guiding columns 16 and 17 for the vertical movement of the slide carriage 13 with means of vertical translation 18.
  • the means of vertical translation 18 comprise first means of controlling the vertical translation 22 and second means of controlling the vertical translation 23;
  • first front part 19 which is coupled to the post 15 with first means of vertical translation 22, which form part of the means of vertical translation 18,
  • a second rear part 20 which is coupled to the post 15 with second means of vertical translation 23 of the means of vertical translation 18, and is coupled to the first part 19 with means of translation 21, clearly visible in Figure 2, in a transverse direction Y with respect to a direction X of motion of the slide 11 with respect to the carriage 13; the translation between the first part 19 and the second part 20 allows the inclination of the slide 11 in order to define an optimum configuration of use of the slide 11 ;
  • the second means of vertical translation 23 are designed to control the translation of the second part 20 with respect to the first part 19, in order to define an optimum configuration of use of the slide 11.
  • the means of vertical translation 18 should therefore be understood to comprise the first means of controlling the vertical translation 22 and the second means of controlling the vertical translation 23.
  • direction X is a horizontal direction
  • direction X is a horizontal direction
  • Y is a vertical direction.
  • the first part 19 of the slide carriage, coupled to the post 15 with the first means of vertical translation 22, is constituted, for example, by a boxlike body 25 inside which there is a through compartment for the slide 11.
  • the second part 20, coupled to the post 15 with the second means of vertical translation 23, is constituted by a frame 24 within which, similarly, the slide 11 slides.
  • the means of horizontal translation 14 comprise at least one longitudinal guide, and for the purposes of example two longitudinal guides 26 and 27, for each side, right and left, of the slide 11 ; at least one slider, for example two sliders 28 and 29, fixed inside the first part 19 and at least one slider, for example two sliders 30 and 31, fixed inside the second part 20 are arranged so as to slide on each longitudinal guide 26 and 27; the guides and the sliders are clearly visible in Figure 3.
  • the means of horizontal translation 14 of the slide 11 with respect to the slide carriage 13 also comprise a linear actuator of the type with a lead screw and an endless screw 50, in which the lead screw 51 is fixed to the slide 11 , as in Figure 7, while the endless screw 52 is supported in a front region by the first part 19 of the carriage 13, for example with a front bearing support 53, and in a rear region, with a rear bearing support 54, by the second part 20 of that carriage 13.
  • the screw 52 is rotated about its own main axis by a gearmotor 60 by way of a belt-and-pulley system 61.
  • the gearmotor 60 is supported by a corresponding tail bracket 63 which is integral with the second part 20.
  • the first means of vertical translation 22 for the vertical movement of the first part 19 of the carriage 13 comprise a front screw device 32 and a recirculating-ball lead screw 33.
  • the first means of vertical translation 22 also comprise a front actuation cylinder 34 for balancing.
  • the screw 32 operates on a recirculating-ball lead screw 33 which is supported by a front lateral tab 35 that protrudes from a first side of the first part 19, while the front actuation cylinder 34 operates on a front bracket 36 that extends from the second, opposite side of the first part 19.
  • the second means of vertical translation 23 for the vertical movement of the second part 20 of the carriage 13 comprise a rear screw device 37 and a recirculating-ball lead screw 38.
  • the second means of vertical translation 23 also comprise a rear actuation cylinder 39 for balancing.
  • the screw 37 operates on a recirculating-ball lead screw 38 which is supported by a rear lateral tab 40 that protrudes from a first side of the second part 20, while the balancing cylinder 39 operates on a rear bracket 36a, visible in Figure 6, that extends from the second opposite side of the second part 20.
  • the screw devices and recirculating-ball lead screw devices front 32 and 33 and rear 37 and 38, are arranged so as to operate on opposite sides of the carriage 13, as can clearly be seen in Figure 2.
  • the front screw 32 is turned by a corresponding electric motor 41 that is fixed to the upper part of the post 15.
  • the rear screw 37 is turned by a corresponding electric motor 42 that is fixed to the upper part of the post 15.
  • the balancing actuation cylinders 34 and 39 are also fixed to the upper part of the post 15.
  • the means of translation 21 of the second part 20 with respect to the first part 19 comprise two linear guiding systems 43 for the translation of each one of the right and left sides of one part 20 with respect to the corresponding right and left sides of the other part 19.
  • Each one of the linear guiding systems 43 is constituted, for example, by a planar roller guide.
  • the first part 19 and the second part 20 are connected by at least one elastically deformable flexible plate 70 for automatically restoring the initial configuration of the second part 20 with respect to the first part 19, which is fixed astride the two parts, the first part 19 and the second part 20.
  • Such a flexible plate is made, for example, of metallic material.
  • the plates 70 also cooperate to impede an excess relative translation between the two parts, the first part 19 and the second part 20, thus limiting the deformation that occurs on the slide 11 and on the guides 26 and 27 within safety limits.
  • the first part 19 and the second part 20 are therefore each moved by a screw device and dedicated recirculating-ball lead screw, one arranged in a front region and one arranged in a rear region; the overall position of the carriage 13 is determined by the synchronous action of the first means of vertical translation 22 and of the second means of vertical translation 23, and the slide 11 maintains its horizontal configuration.
  • FIGS 4 and 5 clearly and schematically show the operation of the machine 10 according to the invention.
  • Figure 4 schematically shows a situation of lowering the machining head 12, owing to bending of the slide 11.
  • Figure 5 schematically shows how the correct operating position of the machining head 12 is restored by way of the action of the second means of vertical translation 23, indicated by the arrow of the force F applied by them, which produce the translation of the second part 20 downward with respect to the first part 19, such translation being of the order of fractions of a millimeter.
  • the action of the force F is transmitted from the second part 20 to the slide 11 by way of the sliders 30 and 31 of the second part 20 and the corresponding longitudinal guides 26 and 27 which are integral with the slide 11.
  • the invention also relates to a slide carriage 13 for machine tools of the type with a horizontal slide 11 and a machining head 12 supported in a cantilever manner by the slide 11 , the latter being able to move horizontally with corresponding means of horizontal translation 14;
  • the slide carriage 13 being characterized in that it comprises, as described above:
  • a second rear part 20 which is coupled to the post 15 with second means of vertical translation 23 of the means of vertical translation 18, and is coupled to the first part 19 with means of translation 21 in a transverse direction Y with respect to a direction X of motion of the slide 11 with respect to the carriage 13; the means of translation 21 between the first part 19 and the second part 20 allow the inclination of the slide 11 in order to define an optimum configuration of use of the slide 11 ;
  • the second means of vertical translation 23 are thus designed to control the translation of the second part 20 with respect to the first part 19, in order to define an optimum configuration of use of the slide 11.
  • the slide carriage 13 is divided into two pieces, a first front part 19 and a second rear part 20, which act to compensate the drop of the slide 11 by moving vertically with respect to each other.
  • first part 19 is moved by the recirculating-ball screws of the means of vertical translation 18, which establish the operating position of the spindle axle, while the second part 20 is moved relative to the first part 19 by way of the second means of vertical translation 23, as described above.
  • the second part 20 is coupled to the first part 19 by way of adapted vertically- sliding guide mechanisms.
  • the second means of vertical translation 23 produce the rotary motion of the slide 11 with respect to a point of instantaneous rotation P, at the sliders 28 and 29 inside the first part 19 of the carriage 13, as in Figure 3.
  • the Cartesian machine tool 10 With respect to the known art in which the carriage is supported on a single side by way of a post constituted by a single column, the Cartesian machine tool 10 according to the invention encloses the carriage 13 on both sides, thus producing only symmetrical deformations, giving the system a deformed configuration that is easily calculable and predictable.
  • the system defined by the Cartesian machine tool 10 according to the invention integrated with numerical control, achieves the aim of correcting the errors of positioning owing to structural deformations of the elements of the slide 11 and overcomes the drawbacks of conventional systems by limiting to the minimum the geometric errors that are difficult to control.
  • Cartesian machine tool is capable of restoring the correct configuration of a machining head, limiting to the minimum the deformations of the sliding guides of the slide, and in general without introducing deformations into the means of guiding the movable elements of the machine.
  • Cartesian machine tool has been devised with operational performance levels that are not lower than conventional Cartesian machine tools.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Machine Tool Units (AREA)

Abstract

A Cartesian machine tool (10), with a horizontal slide (11) and a machining head (12) supported in a cantilever manner by the slide (11), which comprises: - a slide carriage (13), with respect to which the slide (11) can move horizontally with corresponding means of horizontal translation (14); - a post (15), which comprises two opposite guiding columns (16, 17) for the vertical movement of the slide carriage (13) with means of vertical translation (18); characterized in that: - the means of vertical translation (18) comprise first means of controlling the vertical translation (22) and second means of controlling the vertical translation (23); - the slide carriage (13) comprises: - a first front part (19), which is coupled to the post (15) with first means (22) of the means of vertical translation (18); - a second rear part (20), which is coupled to the post (15) with second means (23) of the means of vertical translation (18), and is coupled to the first part (19) with means of translation (21) in a transverse direction (Y) with respect to a direction (X) of motion of the slide (11) with respect to the carriage (13); the translation between the first part (19) and the second part (20) allows the inclination of the slide (11) in order to define an optimum configuration of use of the slide (11); - the second means of vertical translation (23) being designed to control the translation of the second part (20) with respect to the first part (19).

Description

CARTESIAN MACHINE TOOL WITH HORIZONTAL SLIDE AND CANTILEVERED MACHINING HEAD, AND SLIDE CARRIAGE FOR SUCH MACHINE TOOL
The present invention relates to a Cartesian machine tool, of the type with a horizontal slide and a machining head supported in a cantilever manner by the slide.
Nowadays machine tools are known of the type with a horizontal slide and a machining head supported in a cantilever manner by the slide, which typically comprise:
- a slide carriage, with respect to which the slide can move horizontally according to a first direction with corresponding means of horizontal translation,
- and a post for moving, according to a second direction, the slide carriage vertically with means of vertical translation.
The post, further, slides on a footing in a third direction, perpendicular to the other two.
Typically the accuracy of such large-sized Cartesian machine tools
(with excursion of the axes greater than 3 meters) is limited by structural deformations that affect the elements of the supporting frame and of the slide proper, and these deformations vary as a function of the excursion of the slide.
In order to correct the positioning errors owing to structural deformations of the elements of the slide, nowadays systems are known and used which act by making the sliding guides of the slide deform.
However, such systems have the severe drawback that they allow the introduction of geometric errors that can then be difficult to control during detection and correction.
The aim of the present invention is to provide a Cartesian machine tool that is capable of restoring the correct configuration of a machining head, limiting to the minimum the deformation of the sliding guides of the slide, and in general without introducing deformations into the means of guiding the movable elements of the machine.
Within this aim, an object of the present invention is to provide a Cartesian machine tool in which the position of the machining head can be rapidly corrected with respect to any deviations with respect to a preset position.
Another object of the present invention is to provide a Cartesian machine tool with operational performance levels that are not lower than conventional Cartesian machine tools.
Another object of the present invention is to provide a slide carriage for a Cartesian machine tool as per the main aim.
This aim and these and other objects which will become better evident hereinafter are achieved by a Cartesian machine tool, of the type with a horizontal slide and a machining head supported in a cantilever manner by said slide, according to claim 1, and also by a slide carriage according to claim 11.
Further characteristics and advantages of the invention will become better apparent from the detailed description that follows of a preferred, but not exclusive, embodiment of the Cartesian machine tool according to the invention, which is illustrated for the purposes of non-limiting example in the accompanying drawings wherein:
- Figure 1 is a perspective view of a Cartesian machine tool according to the invention;
- Figure 2 is a perspective view of the carriage and the slide of a Cartesian machine tool according to the invention;
- Figure 3 is a perspective view of a slide of a Cartesian machine tool according to the invention;
- Figures 4 and 5 are schematic views of the operation of the slide carriage of the Cartesian machine tool according to the invention;
- Figure 6 is a front elevation view of a carriage with slide of a Cartesian machine tool according to the invention;
- Figure 7 is a cross-sectional side view of a carriage and slide, taken along the line VII- VII of Figure 6.
With reference to the figures, a Cartesian machine tool according to the invention is generally designated with the reference numeral 10.
The Cartesian machine tool 10 is of the type with a horizontal slide 11 and a machining head 12 supported in a cantilever manner by the slide 11.
The Cartesian machine tool 10 comprises:
- a slide carriage 13, with respect to which the slide 11 can move horizontally with corresponding means of horizontal translation 14;
- a post 15, which comprises two opposite guiding columns 16 and 17 for the vertical movement of the slide carriage 13 with means of vertical translation 18.
The peculiarity of the invention consists in that:
- the means of vertical translation 18 comprise first means of controlling the vertical translation 22 and second means of controlling the vertical translation 23;
- the slide carriage 13 comprises, as can clearly be seen in Figure 2:
- a first front part 19, which is coupled to the post 15 with first means of vertical translation 22, which form part of the means of vertical translation 18,
- a second rear part 20, which is coupled to the post 15 with second means of vertical translation 23 of the means of vertical translation 18, and is coupled to the first part 19 with means of translation 21, clearly visible in Figure 2, in a transverse direction Y with respect to a direction X of motion of the slide 11 with respect to the carriage 13; the translation between the first part 19 and the second part 20 allows the inclination of the slide 11 in order to define an optimum configuration of use of the slide 11 ;
- the second means of vertical translation 23 are designed to control the translation of the second part 20 with respect to the first part 19, in order to define an optimum configuration of use of the slide 11.
The means of vertical translation 18 should therefore be understood to comprise the first means of controlling the vertical translation 22 and the second means of controlling the vertical translation 23.
In particular the direction X is a horizontal direction, and the direction
Y is a vertical direction.
The first part 19 of the slide carriage, coupled to the post 15 with the first means of vertical translation 22, is constituted, for example, by a boxlike body 25 inside which there is a through compartment for the slide 11.
The second part 20, coupled to the post 15 with the second means of vertical translation 23, is constituted by a frame 24 within which, similarly, the slide 11 slides.
The means of horizontal translation 14 comprise at least one longitudinal guide, and for the purposes of example two longitudinal guides 26 and 27, for each side, right and left, of the slide 11 ; at least one slider, for example two sliders 28 and 29, fixed inside the first part 19 and at least one slider, for example two sliders 30 and 31, fixed inside the second part 20 are arranged so as to slide on each longitudinal guide 26 and 27; the guides and the sliders are clearly visible in Figure 3.
The means of horizontal translation 14 of the slide 11 with respect to the slide carriage 13 also comprise a linear actuator of the type with a lead screw and an endless screw 50, in which the lead screw 51 is fixed to the slide 11 , as in Figure 7, while the endless screw 52 is supported in a front region by the first part 19 of the carriage 13, for example with a front bearing support 53, and in a rear region, with a rear bearing support 54, by the second part 20 of that carriage 13.
The screw 52 is rotated about its own main axis by a gearmotor 60 by way of a belt-and-pulley system 61.
The gearmotor 60 is supported by a corresponding tail bracket 63 which is integral with the second part 20. Of the means of vertical translation 18, the first means of vertical translation 22 for the vertical movement of the first part 19 of the carriage 13 comprise a front screw device 32 and a recirculating-ball lead screw 33.
The first means of vertical translation 22 also comprise a front actuation cylinder 34 for balancing.
The screw 32 operates on a recirculating-ball lead screw 33 which is supported by a front lateral tab 35 that protrudes from a first side of the first part 19, while the front actuation cylinder 34 operates on a front bracket 36 that extends from the second, opposite side of the first part 19.
Of the means of vertical translation 18, the second means of vertical translation 23 for the vertical movement of the second part 20 of the carriage 13 comprise a rear screw device 37 and a recirculating-ball lead screw 38.
The second means of vertical translation 23 also comprise a rear actuation cylinder 39 for balancing.
The screw 37 operates on a recirculating-ball lead screw 38 which is supported by a rear lateral tab 40 that protrudes from a first side of the second part 20, while the balancing cylinder 39 operates on a rear bracket 36a, visible in Figure 6, that extends from the second opposite side of the second part 20.
In particular, the screw devices and recirculating-ball lead screw devices, front 32 and 33 and rear 37 and 38, are arranged so as to operate on opposite sides of the carriage 13, as can clearly be seen in Figure 2.
The front screw 32 is turned by a corresponding electric motor 41 that is fixed to the upper part of the post 15.
The rear screw 37 is turned by a corresponding electric motor 42 that is fixed to the upper part of the post 15.
The balancing actuation cylinders 34 and 39 are also fixed to the upper part of the post 15.
The means of translation 21 of the second part 20 with respect to the first part 19 comprise two linear guiding systems 43 for the translation of each one of the right and left sides of one part 20 with respect to the corresponding right and left sides of the other part 19.
Each one of the linear guiding systems 43 is constituted, for example, by a planar roller guide.
Advantageously, the first part 19 and the second part 20 are connected by at least one elastically deformable flexible plate 70 for automatically restoring the initial configuration of the second part 20 with respect to the first part 19, which is fixed astride the two parts, the first part 19 and the second part 20.
There is at least one upper flexible plate 70, and preferably two flexible plates, a lower one and an upper one.
Such a flexible plate is made, for example, of metallic material.
The plates 70 also cooperate to impede an excess relative translation between the two parts, the first part 19 and the second part 20, thus limiting the deformation that occurs on the slide 11 and on the guides 26 and 27 within safety limits.
The first part 19 and the second part 20 are therefore each moved by a screw device and dedicated recirculating-ball lead screw, one arranged in a front region and one arranged in a rear region; the overall position of the carriage 13 is determined by the synchronous action of the first means of vertical translation 22 and of the second means of vertical translation 23, and the slide 11 maintains its horizontal configuration.
Instead, if the screw device and recirculating-ball lead screw are actuated so that, for example, the rear screw 37 creates a small difference of position with respect to the front screw 32, by virtue of the construction of the carriage 13 in two parts, the first part 19 and the second part 20, which can slide mutually, a different position is induced of the second part 20 of the carriage 13 which, by moving the guiding sliders 30 and 31 of the slide 11 downward, and thus deforming its screws, pushes the rear part of the slide 11 downward and, as a consequence, pushes the front part upward, thus correcting the drop of the end supporting the machining head 12.
The first means of vertical translation 22 and the second means of vertical translation 23, commanded automatically, act proportionally with respect to the cantilevered position of the machining head 12, i.e. the further the slide 11 is extracted from the slide carriage 13, the greater is the vertical lowering imposed by the second means of vertical translation 23 on the second part 20.
Figures 4 and 5 clearly and schematically show the operation of the machine 10 according to the invention.
Figure 4 schematically shows a situation of lowering the machining head 12, owing to bending of the slide 11.
Figure 5 schematically shows how the correct operating position of the machining head 12 is restored by way of the action of the second means of vertical translation 23, indicated by the arrow of the force F applied by them, which produce the translation of the second part 20 downward with respect to the first part 19, such translation being of the order of fractions of a millimeter.
As mentioned above, the action of the force F is transmitted from the second part 20 to the slide 11 by way of the sliders 30 and 31 of the second part 20 and the corresponding longitudinal guides 26 and 27 which are integral with the slide 11.
The invention also relates to a slide carriage 13 for machine tools of the type with a horizontal slide 11 and a machining head 12 supported in a cantilever manner by the slide 11 , the latter being able to move horizontally with corresponding means of horizontal translation 14; the slide carriage 13 being characterized in that it comprises, as described above:
- a first front part 19, which is coupled to the post 15 with first means of vertical translation 22 of the means of vertical translation 18;
- a second rear part 20, which is coupled to the post 15 with second means of vertical translation 23 of the means of vertical translation 18, and is coupled to the first part 19 with means of translation 21 in a transverse direction Y with respect to a direction X of motion of the slide 11 with respect to the carriage 13; the means of translation 21 between the first part 19 and the second part 20 allow the inclination of the slide 11 in order to define an optimum configuration of use of the slide 11 ;
- the second means of vertical translation 23 are thus designed to control the translation of the second part 20 with respect to the first part 19, in order to define an optimum configuration of use of the slide 11.
In practice it has been found that the invention fully achieves the intended aim and objects.
In fact, in order to achieve compensation of the drop of the slide 11 , the slide carriage 13 is divided into two pieces, a first front part 19 and a second rear part 20, which act to compensate the drop of the slide 11 by moving vertically with respect to each other.
In particular, the first part 19 is moved by the recirculating-ball screws of the means of vertical translation 18, which establish the operating position of the spindle axle, while the second part 20 is moved relative to the first part 19 by way of the second means of vertical translation 23, as described above.
As has been seen, the second part 20 is coupled to the first part 19 by way of adapted vertically- sliding guide mechanisms.
Since in any case these are small compensations, which do however cause a deformation of the slide 11, it is possible to continuously compensate the position of the front of the slide as a function of its travel outward.
The second means of vertical translation 23 produce the rotary motion of the slide 11 with respect to a point of instantaneous rotation P, at the sliders 28 and 29 inside the first part 19 of the carriage 13, as in Figure 3.
With respect to the known art in which the carriage is supported on a single side by way of a post constituted by a single column, the Cartesian machine tool 10 according to the invention encloses the carriage 13 on both sides, thus producing only symmetrical deformations, giving the system a deformed configuration that is easily calculable and predictable.
The system defined by the Cartesian machine tool 10 according to the invention, integrated with numerical control, achieves the aim of correcting the errors of positioning owing to structural deformations of the elements of the slide 11 and overcomes the drawbacks of conventional systems by limiting to the minimum the geometric errors that are difficult to control.
The symmetry of the means of translation 18 and of the columns 16 and 17 of the post 15 cooperate significantly in optimizing the functionality of the invention.
Therefore, with the invention a Cartesian machine tool has been devised that is capable of restoring the correct configuration of a machining head, limiting to the minimum the deformations of the sliding guides of the slide, and in general without introducing deformations into the means of guiding the movable elements of the machine.
What is more, with the invention a Cartesian machine tool has been devised in which the position of the machining head can be rapidly corrected with respect to any deviations with respect to a preset position.
Furthermore, with the invention a Cartesian machine tool has been devised with operational performance levels that are not lower than conventional Cartesian machine tools.
Furthermore, with the invention a suitable slide carriage for Cartesian machine tools has been devised.
The invention thus conceived is susceptible of numerous modifications and variations, all of which are within the scope of the appended claims. Moreover, all the details may be substituted by other, technically equivalent elements.
In practice the components and the materials employed, provided they are compatible with the specific use, and the contingent dimensions and shapes, may be any according to requirements and to the state of the art.
The disclosures in Italian Patent Application No. 102016000027866 (UA2016A001749) from which this application claims priority are incorporated herein by reference.
Where technical features mentioned in any claim are followed by reference signs, those reference signs have been included for the sole purpose of increasing the intelligibility of the claims and accordingly, such reference signs do not have any limiting effect on the interpretation of each element identified by way of example by such reference signs.

Claims

1. A Cartesian machine tool (10), of the type with a horizontal slide (11) and a machining head (12) supported in a cantilever manner by said slide (11), which comprises:
- a slide carriage (13), with respect to which said slide (11) can move horizontally with corresponding means of horizontal translation (14);
- a post (15), which comprises two opposite guiding columns (16, 17) for the vertical movement of said slide carriage (13) with means of vertical translation (18);
characterized in that:
- the means of vertical translation (18) comprise first means of controlling the vertical translation (22) and second means of controlling the vertical translation (23);
- the slide carriage (13) comprises:
- a first front part (19), which is coupled to the post (15) with first means (22) of said means of vertical translation (18);
- a second rear part (20), which is coupled to the post (15) with second means (23) of said means of vertical translation (18), and is coupled to the first part (19) with means of translation (21) in a transverse direction (Y) with respect to a direction (X) of motion of said slide (11) with respect to said carriage (13), the translation between the first part (19) and the second part (20) allowing the inclination of the slide (11) in order to define an optimum configuration of use of the slide (11);
- said second means of vertical translation (23) being designed to control the translation of the second part (20) with respect to the first part
(19).
2. The Cartesian machine tool according to claim 1, characterized in that of said means of vertical translation (18), the first means of vertical translation (22) for the vertical movement of the first part (19) of the carriage (13) comprise a front screw device (32) and a recirculating-ball lead screw (33).
3. The Cartesian machine tool according to one or more of the preceding claims, characterized in that said first means of vertical translation (22) comprise a front actuation cylinder (34) for balancing.
4. The Cartesian machine tool according to one or more of the preceding claims, characterized in that of said means of vertical translation (18), the second means of vertical translation (23) for the vertical movement of the second part (20) of the carriage (13) comprise a rear screw device (37) and a recirculating-ball lead screw (38).
5. The Cartesian machine tool according to one or more of the preceding claims, characterized in that said second means of vertical translation (23) comprise a rear actuation cylinder (39) for balancing.
6. The Cartesian machine tool according to one or more of the preceding claims, characterized in that said screw devices and recirculating- ball lead screw devices, the front one (32, 33) and the rear one (37, 38), are arranged so as to operate on opposite sides of the carriage (13).
7. The Cartesian machine tool according to one or more of the preceding claims, characterized in that said front screw (32) is turned by a corresponding electric motor (41) that is fixed to the upper part of the post (15), said rear screw (37) being turned by a corresponding electric motor (42) that is fixed to the upper part of the post (15).
8. The Cartesian machine tool according to one or more of the preceding claims, characterized in that said balancing actuation cylinders (34, 39) are fixed to the upper part of the post (15).
9. The Cartesian machine tool according to one or more of the preceding claims, characterized in that said means of translation (21) of the second part (20) with respect to said first part (19) comprise two linear guiding systems for the translation of each one of the right and left sides of one part (20) with respect to the corresponding right and left sides of the other part (19).
10. The Cartesian machine tool according to one or more of the preceding claims, characterized in that said first part (19) and said second part (20) are connected by at least one elastically deformable flexible plate (70) for automatically restoring the initial configuration of the second part (20) with respect to the first part (19), which is fixed astride the two parts, the first part (19) and the second part (20).
11. A slide carriage (13) for machine tools of the type with a horizontal slide (11) and a machining head (12) supported in a cantilever manner by said slide (11), which can move horizontally with corresponding means of horizontal translation (14), said slide carriage (13) being characterized in that it comprises:
- a first front part (19), which is coupled to said post (15) with first means of vertical translation (22);
- a second rear part (20), which is coupled to said post (15) with second means of vertical translation (23) and is coupled to said first part
(19) with means of translation (21) in a transverse direction (Y) with respect to a direction (X) of motion of said slide (11) with respect to said carriage
PCT/EP2017/056234 2016-03-17 2017-03-16 Cartesian machine tool with horizontal slide and cantilevered machining head, and slide carriage for such machine tool WO2017158090A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITUA2016A001749A ITUA20161749A1 (en) 2016-03-17 2016-03-17 CARTESIAN TOOL MACHINE WITH HORIZONTAL SLIDE AND WORKING HEAD WITH OVERHANG, AND SLIDING CARRIAGE FOR THIS MACHINE TOOL
IT102016000027866 2016-03-17

Publications (1)

Publication Number Publication Date
WO2017158090A1 true WO2017158090A1 (en) 2017-09-21

Family

ID=56203756

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2017/056234 WO2017158090A1 (en) 2016-03-17 2017-03-16 Cartesian machine tool with horizontal slide and cantilevered machining head, and slide carriage for such machine tool

Country Status (2)

Country Link
IT (1) ITUA20161749A1 (en)
WO (1) WO2017158090A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20190106236A (en) * 2018-03-08 2019-09-18 두산공작기계 주식회사 Carriage device of machine tool
FR3115484A1 (en) * 2020-10-27 2022-04-29 Engineering Francois Abelard machine tool structure
WO2023144613A1 (en) * 2022-01-25 2023-08-03 Innse-Berardi S.P.A. Societa' Unipersonale Machine tool

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013207125A1 (en) * 2013-04-19 2014-10-23 Heinrich Georg Gmbh Maschinenfabrik Machining center, in particular turning / drilling / milling / grinding center for machining workpieces
CN103878645B (en) * 2012-12-20 2016-03-16 中国科学院沈阳自动化研究所 A kind of ram overhanging deflection compensation device and method

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103878645B (en) * 2012-12-20 2016-03-16 中国科学院沈阳自动化研究所 A kind of ram overhanging deflection compensation device and method
DE102013207125A1 (en) * 2013-04-19 2014-10-23 Heinrich Georg Gmbh Maschinenfabrik Machining center, in particular turning / drilling / milling / grinding center for machining workpieces

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20190106236A (en) * 2018-03-08 2019-09-18 두산공작기계 주식회사 Carriage device of machine tool
KR102370771B1 (en) 2018-03-08 2022-03-04 두산공작기계 주식회사 Carriage device of machine tool
FR3115484A1 (en) * 2020-10-27 2022-04-29 Engineering Francois Abelard machine tool structure
WO2022090261A1 (en) * 2020-10-27 2022-05-05 Engineering Francois Abelard Machine tool structure
WO2023144613A1 (en) * 2022-01-25 2023-08-03 Innse-Berardi S.P.A. Societa' Unipersonale Machine tool

Also Published As

Publication number Publication date
ITUA20161749A1 (en) 2017-09-17

Similar Documents

Publication Publication Date Title
WO2017158090A1 (en) Cartesian machine tool with horizontal slide and cantilevered machining head, and slide carriage for such machine tool
CN104028944B (en) Apparatus for shaping and detent mechanism thereof
US10239174B2 (en) Machine tool
EP3479943B1 (en) Cutting-off machine to cut section bars, in particular made of aluminium, light alloys, pvc or the like
CN102626730A (en) Double-rack variable-curvature bending device and method for applying same
US20120214654A1 (en) Tool changing device for a cutting head of a machine for cutting flat glass sheets
KR20150107310A (en) Mold unit for stretch bender
CN107457287A (en) Induction type rear stock stop of bending machine
KR20180103497A (en) Cutting apparatus
EP3429800B1 (en) Cartesian machine tool with horizontal slide and cantilevered machining head
WO2017158059A1 (en) Cartesian machine tool with horizontal slide and cantilevered machining head, and slide carriage for such machine tool
EP2827092B1 (en) Cartridge loading machine with quick caliber change system
CN203853889U (en) Control system for controlling grinding wheel feed amount of edge grinding machine
CN102416709B (en) Floating guide device for use on long-travel hydraulic press
US20160229021A1 (en) Motorized blade rest apparatus and grinding system with motorized blade rest apparatus
JP6397713B2 (en) Tracking device
CN204545186U (en) A kind of spacing hold-down mechanism for 500 tons of benders
CN207358709U (en) A kind of numerically-controlled machine tool anti-jumping sliding door
EP2493823B1 (en) Tilting device for cropping a sheet of laminated glass
CN205085743U (en) Developments datum point digital control processing equipment
JP2016215230A (en) Bending apparatus
CN104400548B (en) A kind of vertical guide rail protection cover of single group hinge type
CN203592368U (en) Horizontal rectangular edge grinding machine
CN103434070B (en) The automatic cutter of two-roll calendar
CN209349940U (en) Single driving structure of bridge-type small arc shaped

Legal Events

Date Code Title Description
NENP Non-entry into the national phase

Ref country code: DE

121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 17711633

Country of ref document: EP

Kind code of ref document: A1

122 Ep: pct application non-entry in european phase

Ref document number: 17711633

Country of ref document: EP

Kind code of ref document: A1