EP4010147A1 - Machine de perçage en profondeur - Google Patents

Machine de perçage en profondeur

Info

Publication number
EP4010147A1
EP4010147A1 EP20747382.8A EP20747382A EP4010147A1 EP 4010147 A1 EP4010147 A1 EP 4010147A1 EP 20747382 A EP20747382 A EP 20747382A EP 4010147 A1 EP4010147 A1 EP 4010147A1
Authority
EP
European Patent Office
Prior art keywords
tool
spindle
magazine
drilling
spindles
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.)
Pending
Application number
EP20747382.8A
Other languages
German (de)
English (en)
Inventor
Jan WOLF
Daniel Bross
Jörg Schmauder
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TBT Tiefbohrteckhik GmbH and Co KG
Original Assignee
TBT Tiefbohrteckhik GmbH and Co KG
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
Priority claimed from DE102019211997.2A external-priority patent/DE102019211997A1/de
Priority claimed from DE202019104405.5U external-priority patent/DE202019104405U1/de
Application filed by TBT Tiefbohrteckhik GmbH and Co KG filed Critical TBT Tiefbohrteckhik GmbH and Co KG
Publication of EP4010147A1 publication Critical patent/EP4010147A1/fr
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23QDETAILS, 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
    • B23Q3/00Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
    • B23Q3/155Arrangements for automatic insertion or removal of tools, e.g. combined with manual handling
    • B23Q3/157Arrangements for automatic insertion or removal of tools, e.g. combined with manual handling of rotary tools
    • B23Q3/15786Arrangements for automatic insertion or removal of tools, e.g. combined with manual handling of rotary tools a plurality of tools being inserted simultaneously in a plurality of spindles directly from a storage device, i.e. without using transfer devices
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23BTURNING; BORING
    • B23B39/00General-purpose boring or drilling machines or devices; Sets of boring and/or drilling machines
    • B23B39/16Drilling machines with a plurality of working-spindles; Drilling automatons
    • B23B39/161Drilling machines with a plurality of working-spindles; Drilling automatons with parallel work spindles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23BTURNING; BORING
    • B23B41/00Boring or drilling machines or devices specially adapted for particular work; Accessories specially adapted therefor
    • B23B41/02Boring or drilling machines or devices specially adapted for particular work; Accessories specially adapted therefor for boring deep holes; Trepanning, e.g. of gun or rifle barrels
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23QDETAILS, 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
    • B23Q39/00Metal-working machines incorporating a plurality of sub-assemblies, each capable of performing a metal-working operation
    • B23Q2039/002Machines with twin spindles

Definitions

  • the invention relates to a deep drilling machine according to the preamble of claim 1.
  • Deep drilling - also known as deep hole drilling - is a special drilling method that is used primarily to produce holes with a diameter of 0.5 mm to 1,500 mm at a depth of more than three times the diameter. By means of deep drilling, very deep holes with a depth / diameter ratio greater than 200 can be produced.
  • a continuous supply of coolant under pressure and a steady chip evacuation without chip removal is characteristic of deep drilling. This means that even deep bores can be made in one pass using the deep drilling method, and the drill does not have to be removed from the bore in between to remove the chips.
  • Another characteristic of deep drilling is that deep drilling tools guide themselves in the bore in order to avoid the bore running out of the intended direction of the bore axis.
  • a deep hole drilling machine is a machine tool specially designed for deep hole drilling.
  • a generic deep drilling machine has a machine bed which carries a linear guide system. With a horizontal deep drilling machine, this is aligned horizontally.
  • a tool spindle unit is guided in a linearly movable manner on the linear guide system. Due to the required output in many applications, multi-spindle deep hole drilling machines are used for the simultaneous machining of several similar workpieces.
  • the tool spindle unit in generic deep hole drilling machines therefore has two or more axially parallel tool spindles, each of which can be rotated around a horizontal spindle axis by means of a spindle drive and a tool holder for holding a drilling tool (e.g. deep drilling tool, pilot drill, twist drill, countersink).
  • a generic deep drilling machine thus belongs to the class of multi-spindle horizontal deep drilling machines.
  • Deep drilling machines of the type considered here have a workpiece holding unit which can perform different tasks depending on the drilling method.
  • the workpiece receiving unit can guide bushings for guiding drilling tools Bear drilling.
  • the workpiece holding unit can be equipped with workpiece holders for holding one workpiece per tool spindle.
  • the guide bushing is omitted and only one feed-through opening is provided for guiding the drilling tool through. In either case is one
  • Feed-through opening for passing the drilling tool and on the
  • a structure On the side facing away from the tool spindle unit, a structure is provided which comes into contact with a workpiece and supports and / or holds it or in some other way co-determines its position, e.g. as an axial stop.
  • Multi-spindle deep hole drilling machines with a tool changing system for the automatable changing of drilling tools on the tool spindles are known.
  • EP 0 141 152 B1 discloses one equipped with two tool spindles
  • Tool magazine which is permanently arranged outside the area between the tool spindle unit and a drill bushing carrier.
  • a pivotable change arm is provided which is provided with two gripping pliers corresponding to the two tool spindles.
  • the receiving positions of a tool magazine depicted in the figure are arranged along a cylindrical surface like a drum turret.
  • a magazine is described in which the receiving spaces are arranged in different positions one above the other.
  • DE 199 38 856 A1 discloses a deep drilling device which comprises two horizontally aligned tool spindles lying vertically one above the other and a tool magazine. This is fixed to the frame next to the tool spindle unit on a vertical support plate on the edge of the machine bed. The tool magazine is accessible by moving the tool spindle unit. This can be moved horizontally on horizontal rails that run perpendicular to the spindle axes.
  • the tool change system should offer a cost-effective way of extending the unmanned machine running time.
  • the invention provides a deep drilling machine with the features of claim 1.
  • Advantageous further developments are given in the dependent claims. The wording of all claims is incorporated into the content of the description by reference.
  • the deep hole drilling machine has a machine bed that carries a linear guide system.
  • a tool spindle unit is arranged on the linear guide system so that it can be moved linearly in a horizontal direction.
  • the tool spindle unit has two or more tool spindles which can be rotated about parallel, horizontal spindle axes.
  • the spindle axes lie at a spindle distance from one another in a common spindle plane. Variants are possible in which the spindle plane is aligned horizontally, so the spindle axes are arranged next to one another in a common horizontal spindle plane.
  • the tool spindles can also be arranged vertically one above the other, so that the spindle plane is oriented vertically.
  • Each of the tool spindles has a tool holder at a free end for receiving a drilling tool.
  • the tool holder is designed so that an automated tool change on the tool spindle is possible.
  • the drilling tools must be clamped in such a way that the tool axis runs coaxially to the respective spindle axis.
  • the deep drilling machine furthermore has a workpiece receiving unit which has a feed-through opening for each of the tool spindles for passing the drilling tool or part of the drilling tool through and a structure provided for contact with the workpiece on the side facing away from the tool spindle unit.
  • the workpiece holding unit can fulfill different tasks or be designed differently in terms of its construction.
  • One possible task is to hold guide bushes or workpiece holders.
  • the workpiece holding unit can thus also be designed as a drill bushing carrier or drilling oil supply device.
  • the workpiece holder unit can also have only one workpiece holder with through-holes in the pilot drilling method.
  • the workpiece receiving unit can have a stop surface which serves as an axial stop for the workpiece to be drilled and defines its axial position.
  • a part of the drilling tool provided for penetration into the workpiece can be used be introduced through the through opening into the workpiece received, held or supported on the workpiece receiving unit.
  • a tool change system for the automatable changing of drilling tools on the tool spindles.
  • the tool changing system has a tool magazine which has a plurality of receiving locations for one drilling tool in each case.
  • the receiving spaces serve as predefined storage spaces for one drilling tool in each case, in order to keep it in a position suitable for a tool change within the tool magazine.
  • the tool magazine has at least two groups of receptacles.
  • Each receiving location group comprises a number of receiving locations corresponding to the number of tool spindles, which are arranged at a distance from one another corresponding to the spindle spacing.
  • the tool magazine can be moved back and forth between a change position in the area between the tool spindle unit and the workpiece receiving unit and a rest position or neutral position outside this area. These movements are drive-controlled. They can thus be generated automatically by the machine control or the control unit of the deep hole drilling machine.
  • the change position is characterized in that in the change position the receiving positions of a selectable group of receiving positions are arranged coaxially to the spindle axes of the tool spindles.
  • a special feature of this configuration is that the tool magazine itself, i.e. the device that contains the mounting locations for the drilling tools, can be moved into the area between the tool spindle unit and the workpiece mounting unit or into the travel area of the tool spindles carried by the tool spindle unit in such a way that an immediate Transfer of drilling tools between the respective tool spindles and the receiving locations of the tool magazine can take place. There is therefore a direct transfer between the tool spindle and the tool magazine, like with a pick-up changer.
  • the tool magazine is in the change position and fresh (ie new or reconditioned) drilling tools are received in the receiving positions of the selected receiving position group, these can be transferred directly to the tool adapters of the tool spindles by moving the tool spindle unit so far to The tool magazine moves forward until a tool clamping element located at the tool end engages in the tool holder provided for this purpose on the tool spindle and can be clamped there.
  • drilling tools to be exchanged can be transferred directly to the tool magazine in the changing position if empty receiving spaces are arranged coaxially to the spindle axes and the tool spindle unit is advanced so far in the direction of the tool magazine that the drilling tools can be introduced directly into the receiving spaces before the drilling tools can be removed from the tool spindles are relaxed and thus released.
  • the drilling tool change can be carried out simultaneously on all spindles, which enables a quick tool change on several tool spindles of the multi-spindle deep hole drilling machine.
  • the tool spindle unit only needs the degrees of freedom of movement offered by the linear guide system in order to advance in the direction of the tool magazine so far that the tool change process can take place. Degrees of freedom of movement perpendicular to this are not necessary and preferably also not provided.
  • the concept proposed here offers the possibility of providing a simple tool changer for a multi-spindle horizontal deep drilling machine with only one linear axis in the tool spindle unit for generating the drilling feed.
  • all of the receiving spaces of the tool magazine are arranged next to one another in a common plane.
  • a relatively simple construction of the tool magazine can thereby be realized.
  • a simple linear displacement of the tool magazine which is relatively easy to implement in terms of design and control, is sufficient for a change between the receiving positions from different groups of receiving positions. With appropriate grouping of the receiving places, very short displacement paths can be realized in order to switch between the receiving places of different receiving place groups. This also favors a quick tool change.
  • the reception places of the reception place groups are preferably nested in one another such that between two first reception places belonging to a first reception place group there is at least one second reception place belonging to a second reception place group.
  • all of the receiving locations of the tool magazine are nominally identical to one another, so that they are adapted to the receiving of mutually identical or similar deep drilling tools which have identically or essentially identically dimensioned tool clamping elements. This can be, for example, follow-up tools, basic drilling tools, but also conventional beveling tools.
  • the tool changing system has a movably mounted magazine carrier device which carries the tool magazine, the tool magazine being mounted so as to be linearly displaceable relative to a carrier element of the magazine carrier device and being movable into different working positions with respect to the carrier element by means of a magazine drive.
  • the magazine drive is preferably also carried by the magazine carrier device, so it can be moved together with the tool magazine.
  • the movement of the magazine carrier device is preferably implemented via its own drive, so that the movement can be controlled via the control unit of the deep drilling machine.
  • the tool magazine By moving the magazine carrier device, the tool magazine can be moved into or out of the area between the tool spindle unit and the workpiece receiving unit. Independently of this, the tool magazine can be linearly displaced in relation to the carrier element of the magazine carrier device, in order, for example, when the magazine carrier device is located in the area between the tool spindle unit and the workpiece holder unit, to move the tool magazine into the holder locations of a desired holder location group via a relatively short linear displacement To bring spindle axes coaxial position or to remove from it.
  • two independently controllable drives and thus two independently controllable movements are provided in this embodiment, namely on the one hand the movement of the magazine carrier device or its carrier element and on the other hand the movement of the tool magazine relative to the carrier element.
  • the carrier element of the magazine carrier device is designed as a carrier element which can be pivoted about a pivot axis, so that the movements of the carrier element are rotational movements.
  • a quick change between different operating positions of the carrier element can be implemented, and on the other hand, such an implementation requires relatively little installation space in the area next to the linear guide system.
  • the deep drilling machine is designed so that the horizontal tool spindles are next to each other (i.e.
  • the carrier element can be moved back and forth between a horizontal position and an upright position or vertical position, with the receiving positions of the tool magazine being in the spindle plane and in the horizontal position erected position, the travel path of the tool spindle unit in the direction of the workpiece receiving unit is free, so that the feed of the tool spindle unit required for the deep drilling operation can be carried out.
  • the carrier element of the magazine carrier device can be designed as a carrier element which is linearly movable in a direction of displacement, the direction of displacement running perpendicular to the spindle axes, in particular perpendicular to the spindle plane.
  • Variants with a pivotable support element are generally less complex in terms of construction and have the advantage that only little installation space is required in the area of the components of the tool changing system.
  • the tool change system offers a cost-effective way of extending the unmanned machine running time.
  • the tool magazine has only two groups of receiving locations.
  • the tool changing system can change not only nominally identical sister tools, but also similar, i.e. non-identical drilling tools, for example, in order to increase the drilling depth through subsequent operations.
  • a longer drill can be exchanged for the same Drilling to increase the drilling depth.
  • special tools can also be inserted and exchanged, which, for example, can produce a special drilling base.
  • the advantages of the tool change system come into play particularly when, as part of a tool change, only the drilling tool, but not other tool-dependent components, such as drill bushings and / or tool rests, have to be changed.
  • a preferred application of the tool changing system is, for example, the so-called immersion method, which is characterized in that the tool holder of the tool spindle dips into a specially adapted immersion bushing on the workpiece holder unit. In such deep drilling processes, neither tool rests nor replaceable sealing disks or other workpiece-dependent components are required.
  • the deep drilling machine has a casing that must be closed during the active drilling operation in order to protect the environment from being impaired by noise, cooling lubricant and against hazards caused by interference in the drilling process.
  • there is a separate intermediate door in the cladding in the area of the tool change system which is designed so that the tool magazine can move outwards through the intermediate door when it moves from the change position to the rest position, so that the tool magazine in the rest position outside the is arranged by the cladding enclosed space. After closing the intermediate door, the drilling operation can be started, while at the same time the tool magazine can be unloaded and / or loaded for the next drilling process by an operator.
  • FIG. 1 shows an oblique perspective partial view of a deep drilling machine according to an embodiment of the invention
  • FIG. 2 shows a detailed view with mechanical components of the tool changing system of the exemplary embodiment
  • 3A, 3B show different positions of the workpiece spindle unit in relation to the tool changing system
  • 4 to 16 show different phases of an automatic tool change with the aid of the tool change system.
  • the deep drilling machine 100 is designed as a two-spindle horizontal deep drilling machine.
  • the deep drilling machine 100 has a machine bed 102 which is several times longer in the longitudinal direction (z-direction of the machine coordinate system MKS) than in the transverse direction running perpendicular thereto (x-direction of the machine coordinate system).
  • a linear guide system with two guide rails 104-1, 104-2 parallel to one another is attached to the top of the machine bed.
  • the linear guide system carries a tool spindle unit 110 which, with the aid of an electromechanical drive, can be moved horizontally in the longitudinal direction of the deep drilling machine in a controlled manner over a movement range on the linear guide system.
  • the tool spindle unit 110 has exactly two tool spindles, namely a first tool spindle 112-1, which is closer to the operating side, and a second tool spindle 112-2.
  • the tool spindles are each rotated around their respective spindle axis (first spindle drive) by means of their own spindle drive 113-1, 113-2
  • Spindle axis 115-1 or second spindle axis 115-2) are rotatable.
  • the horizontally extending spindle axes lie in a common, horizontal spindle plane at a spindle distance 117 from one another.
  • Each of the tool spindles has a tool holder 116-1, 116-2 at its free end for holding a drilling tool, in particular a deep drilling tool.
  • the tool holders allow an automatic tool change and for this purpose have automatically actuatable clamping devices which are controlled via the control unit 190 of the deep drilling machine.
  • a workpiece holding unit 130 in the form of a drill bushing carrier 130 is provided at a distance in front of the tool spindle unit 110.
  • the workpiece receiving unit 130 is fixedly mounted on the machine bed 102, that is to say it cannot be moved linearly.
  • the workpiece receiving unit 130 or the drill bushing carrier 130 has its own for each of the tool spindles on the side facing away from the tool spindle unit 110 Workpiece receptacle 136-1, 136-2, in each of which a section of a workpiece to be drilled can be received with a defined position.
  • the workpiece receiving unit 130 furthermore has a lead-through opening for each of the spindle axes for the passage of the drilling tool received on the tool spindle or a section of this drilling tool, which can then penetrate the workpiece being held. Since the structure and function of drill bushing supports or similar devices, such as drilling oil supply apparatus, are known to the person skilled in the art, a more detailed description is dispensed with here.
  • the deep drilling machine is designed to receive the workpieces to be drilled in each case at two opposite end sections so that the sections of the workpieces to be provided with a deep hole are coaxial with the spindle axes.
  • a counter-holding unit 120 is provided at a further distance from the tool spindle unit 110.
  • the counter-holding unit 120 is mounted on a slide that can be moved linearly on the guide rails 104-1, 104-2 of the linear guide system, so that the distance between the workpiece holding unit 130 and the counter-holding unit 120 is continuously adjustable. This means that the deep hole drilling machine can be easily adapted to different workpiece dimensions and tool types.
  • the counter-holding unit 120 has a workpiece spindle for each of the tool spindles, which is rotatably supported within a headstock coaxially to the associated spindle axis 115-1, 115-2.
  • Each of the workpiece spindles can be rotated about its spindle axis with the aid of its own spindle drive 123-1, 123-2, the spindle drives being controllable with regard to the rotational speed and direction of rotation and position.
  • Each of the workpiece spindles has a workpiece holder on the side facing the tool spindle unit 110 or the workpiece receiving unit 130, each of which is provided to receive and clamp an end section of a workpiece remote from the tool.
  • chucks are used for workpiece clamping instead of the workpiece holders.
  • clamping devices for workpiece clamping can also be set up on the linear guide 104-1 and 104-2.
  • the workpiece receiving unit 130 can be used as an axial stop for the workpiece.
  • the deep drilling machine 100 is designed for a fully automated tool change.
  • a tool change system is an essential part of the automation equipment 200 for the automatable changing of drilling tools on the tool spindles 112-1, 112-2.
  • FIG. 2 shows a detailed view from which the basic structure of mechanical components of the tool changing system of the exemplary embodiment can be seen particularly well.
  • the tool change system 200 comprises a base element 210 which is mounted laterally on the machine bed 102 on its operator side and which in the example has two vertical supports 211 which are connected to one another via horizontal struts.
  • the base element 210 carries a pivotable assembly 220 which can be pivoted in a numerically controlled manner between the vertical position shown in FIG. 2 and a horizontal position shown in FIG. 1, for example, with the aid of a numerically controlled pivot drive (not shown).
  • the pivoting movement takes place about a pivot axis 222 which is aligned parallel to the guide rails 104-1, 104-2 of the linear guide system, that is, parallel to the z-direction of the machine coordinate system.
  • the pivotable assembly 220 comprises a magazine carrier device 230 with a support element 225 in the form of a hydrofoil, which is fastened to a shaft 226 that is rotatable about the pivot axis 222.
  • a tool magazine 250 is mounted on the underside of the carrier element 225 visible in FIG. 2.
  • the tool magazine can be moved linearly relative to the carrier element 225 along guide rails attached to the underside of the carrier element perpendicular to the z-axis of the machine coordinate system (see double arrow).
  • a hydraulic magazine drive 259 is mounted on the carrier element 225, which allows the tool magazine 250 to be moved linearly between two different working positions in relation to the carrier element 225.
  • the carrier element 225 and the other devices of the pivotable assembly 220 provided for carrying the tool magazine 250 together form a magazine carrier device 230.
  • the tool magazine 250 has a plurality of receiving spaces for one drilling tool in each case.
  • exactly four receiving spaces that are essentially identical to one another are provided, namely exactly two per tool spindle.
  • the receiving locations 252-1 and 253-1 arranged closer to the pivot axis 222 are assigned to the first tool spindle 112-1.
  • the receiving locations 252-2 and 253-2, which are arranged further away from the pivot axis 222, are assigned to the second tool spindle 112-2, which is closer to the rear of the deep drilling machine.
  • the receiving spaces form two receiving space groups 252 and 253. Each of these receiving space groups has a number of receiving spaces corresponding to the number of tool spindles, two in each case in the example.
  • the receiving spaces 252-1 and 252-2 of the first receiving space group 252 or their central axes lie exactly at the spindle distance 117 from one another.
  • the receptacles are nested in one another in such a way that one receptacle of another receptacle group lies between the two receptacles of a receptacle group.
  • the receiving space 253-1 of the second receiving space group 253 lies between the two receiving spaces 252-1, 252-2 of the first receiving space group.
  • the lateral distance 255 of the two receiving positions of the different receiving position groups assigned to a tool spindle is therefore only a fraction of the spindle distance, for example less than half or less than a third of the spindle distance.
  • All of the receiving positions of the tool magazine 250 are arranged next to one another in a single, common plane, this plane extending parallel to the plane that spans the carrier element 225.
  • the receiving positions of the tool magazine 250 are designed to receive drilling tools (generally reference number 270), each of which is designed for drilling in the plunge process.
  • Each of the drilling tools has a tool receiving sleeve 270-1 at its end facing the tool spindle. This has a cylindrical outer contour and, at its end on the tool spindle side, has an interface for the tool holder in the tool spindle. The interface for the actual deep drilling tool is made at the opposite end. The deep drilling tool with its clamping interface is completely clamped into the tool holder. Only the drill shank 270-2 and the drill head 270-3 attached to it thus protrude from the tool-receiving sleeve.
  • Each receiving space has a partially cylindrical inner contour, the inner diameter of which essentially corresponds to the outer diameter of the tool receiving sleeve 270-1, so that a clamping section of a drilling tool inserted in the longitudinal direction into a receiving space fits into the receiving space essentially without play.
  • the receiving structure On the side facing away from the carrier element 225, the receiving structure is open on one side and forms a passage 254, the clear width of which is greater than the outer diameter of the drill shank of the drilling tool.
  • the tool spindle unit 110 can be moved between different operating positions along the guide rails 104-1, 104-2 of the linear guide system with the aid of the associated electromechanical drive. 1 shows the tool spindle unit 110 in a retracted position in which the distance from the tool receiving unit 130 is at a maximum. This position is also shown in FIGS. 4 and 5, for example.
  • 3A shows the tool spindle unit 110 in a position in which the cylindrical interfaces of the tool receiving sleeves held in the tool receptacles lie outside of the receptacle locations, while the drill shank passes through the
  • Magazine carrier device 230 possible. This position is also referred to as the pre-position and is also shown in Fig. 7, for example.
  • FIG. 3B shows the tool spindle unit 110 in an advanced position that allows tool clamping, i.e. a direct takeover or transfer of a drilling tool between the tool spindle unit 110 and the tool magazine 250.
  • the magazine carrier device 230 must be in its horizontal position.
  • the tool holding sleeves 270-1 of the drilling tools to be exchanged or to be exchanged are located in the associated holding positions. This position is also referred to as the transfer position and is also shown in Fig. 6, for example.
  • FIG. 9 shows a configuration in which the tool spindle unit 110 is advanced even further in the direction of the tool receiving unit 130.
  • the tool spindle unit is advanced so far that the drill shank with the drill tip of each of the drilling tools is passed through the passage opening in the workpiece receiving unit 130 and is located directly in front of the workpiece to be machined.
  • the components of the tool changing system 220 do not hinder this movement of the tool spindle unit 110 when the pivotable assembly 220 or the magazine carrier device 230 is in the upright or vertical position, as shown in FIG. 4 or 9, for example is.
  • the tool magazine 250 is also located outside the travel range of the tool spindle unit 110 in its rest position.
  • the tool magazine 250 is folded or pivoted into the travel range of the tool spindle unit 110 in such a way that the The center axes of the receiving positions all lie in the horizontal spindle plane spanned by the spindle axes 115-1, 115-2.
  • the receiving positions can then be moved horizontally within the spindle plane.
  • the tool magazine 250 can be brought into a change position in which the receiving locations of a selected receiving location group are arranged coaxially to the spindle axes 115-1, 115-2 of the tool spindles. If this is the case, a tool change can take place through immediate transfer or takeover of tools and tool spindles.
  • the pivotable assembly 220 or the magazine carrier device 230 is pivoted from the upright position or vertical position into the horizontal position in which the drilling tools held by the tool magazine are now arranged in the spindle plane between the tool spindle unit 110 and the tool holding unit 130 ( Fig. 5).
  • the tool magazine is in its end position closer to the pivot axis and the receiving spaces 253-1, 253-2 of the second receiving space group 253 are arranged coaxially to the spindle axes 115-1, 115-2.
  • the tool spindle unit 110 then moves forward in the direction of the tool magazine 250 and the tool spindles take up a set of fresh drilling tools with their tool holder designed for an automatic tool change. Those drilling tools which are held in the receiving locations 253-1, 253-2 that are coaxial with the spindle axes 115-1, 115-2 of the tool spindle unit 110 are taken over. The lateral distance 255 to the adjoining receiving places of the other receiving place group 252 is so great that a collision with the there recorded tools is excluded. In the example of FIG. 6, the drilling tools are picked up which are located in the receiving positions of the second receiving position group 253-1, 253-2.
  • the tool spindle unit 110 then moves back into a retracted position at least so far that the tool receptacle sleeves of the tools completely disengage from the receptacle locations, so that a section of the drill shaft is now located in the area of the receptacle locations (FIG. 7).
  • This constellation is also shown in FIG. 3A.
  • the drilling tools clamped on the tool spindles can now be used to drill holes in many workpieces in succession.
  • the workpieces can be automatically exchanged and exchanged using suitable workpiece changing devices.
  • the tool spindle unit only needs to be withdrawn so far that a workpiece change is possible.
  • the cutting ability of the drilling tools gradually deteriorates due to wear, so that a tool change becomes necessary.
  • the right point in time for a tool change can, for example, be carried out after a predetermined number of bores or on the basis of measured values that allow statements about the state of wear of the drilling tools.
  • the tool spindle unit 110 is pulled back so far behind the area of the tool changing system 200 that the pivotable assembly 220 can be pivoted back into its horizontal position.
  • the tool spindle unit 110 is to be retracted at least to the pre-position (cf. FIG. 8) (FIG. 10).
  • the pivotable assembly 220 with tool magazine 250 is then pivoted back into the horizontal position (FIG. 11).
  • the tool spindle unit 110 is then advanced so far (in the direction of the drill bushing carrier 130) that the tool receiving sleeves of the worn drilling tools are reinserted into their receiving positions and taken over there (FIG. 12).
  • the worn tools are then released by the actuatable clamping devices of the tool holders on the tool spindles.
  • the tool spindle unit 110 In order to bring a set of fresh drilling tools into the coaxial positions with the now empty tool spindles, the tool spindle unit 110 first moves back and releases the tool-receiving sleeves. In this situation, both sets of drilling tools are in the tool magazine. The worn tools are initially still coaxial with the spindle axes, while the new drilling tools to be exchanged are located laterally next to them.
  • the new drilling tools are now moved by a short linear movement of the tool magazine 250 (see arrow in FIG. 13) relative to the carrier element 225 into their changing position coaxially to the spindle axes. Little time is needed for this short transverse movement.
  • the tool spindle unit 110 then moves up to the tool change magazine and takes the new drilling tools into the tool holders of the tool spindles.
  • the tool spindle unit 110 then moves back into a retracted position (FIG. 14) so far that the pivotable assembly 220 can be pivoted from the horizontal into the vertical position (FIG. 15).
  • the tool spindle unit with the new drilling tools can be advanced in the direction of the drill bushing carrier 130 and the subsequent deep drilling operations can be carried out with the aid of the freshly exchanged drilling tools (FIG. 16). After completion of these deep drilling operations and the corresponding wear of the drilling tools, the second set of deep drilling tools clamped in the tool spindles is also worn out.
  • the situation is now such that the pivotable assembly 220 with the tool magazine 250 is in a vertical position, with a set of worn drilling tools already being located in the tool magazine 250.
  • the tool spindle unit 110 is now brought into its set-back position in which the pivotable assembly 220 can be pivoted in again.
  • the pivotable assembly with the tool magazine is then pivoted into the horizontal position.
  • the tool spindle unit 110 then moves forward to the tool magazine 250 and transfers the worn drilling tools.
  • Both sets of worn drilling tools are now in the tool magazine 250 of the tool changing system 200.
  • the tool spindle unit 110 is then moved back so that the pivotable assembly 220 can be pivoted into the vertical position again.
  • one variant provides that the deep drilling machine is stopped, a protective door is opened and the drilling tools are changed manually and the tool magazine is equipped with fresh drilling tools.
  • the deep drilling machine can also be expanded with a separating protective device so that the drilling tools in the tool magazine can be exchanged at the same time.
  • This parallel change takes place when the first set of tools is worn out and the second set of tools is being used. If more than two mounting positions are installed per spindle and equipped with the same tools, all worn tools are changed during machining with the last tool set.
  • the magazine can, however, be equipped with different tools per spindle instead of sister tools. A sequence of different drilling operations on a workpiece can then be carried out one after the other.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Automatic Tool Replacement In Machine Tools (AREA)
  • Drilling And Boring (AREA)

Abstract

L'invention concerne une machine de perçage en profondeur (100) comprenant un banc de machine (102), qui porte un système de guidage linéaire et une unité à broches d'outil (110), qui peut être déplacée linéairement sur le système de guidage linéaire et qui comporte au moins deux broches d'outil pouvant tourner autour d'axes horizontaux de broches (115-1, 115-2) qui sont parallèles entre elles et qui se trouvent à un espacement entre broches les unes des autres dans un plan de broches, chacune des broches d'outil comportant un porte-outil (116-1, 116-2) permettant de recevoir un outil de perçage (270). L'invention concerne également une unité de maintien de pièce à usiner (130), qui, pour chacune des broches d'outil, présente une ouverture de passage permettant l'acheminement à travers l'outil de perçage et, sur le côté opposé à l'unité à broches d'outil (110), une structure destinée à venir en contact avec la pièce à usiner. L'invention concerne également un système de changement d'outil (200), permettant de modifier de manière automatisable des outils de perçage sur les broches d'outil, le système de changement d'outil comprenant un magasin d'outils (250) pourvu d'une pluralité d'emplacements de réception respectivement pour un outil de perçage. Le magasin d'outils (250) présente au moins deux groupes d'emplacements de réception, chaque groupe d'emplacements de réception comprenant un certain nombre d'emplacements de réception correspondant au nombre de broches d'outil et les emplacements de réception étant agencés à une certaine distance les uns des autres, correspondant à l'espacement entre broches. Le magasin d'outils (150) peut être déplacé entre une position de changement, dans la zone située entre l'unité à broches d'outil (110) et l'unité de maintien de pièce à usiner (130), et une position de repos, située à l'extérieur d'une zone de déplacement de l'unité à broches d'outil. Dans la position de changement, les emplacements de réception d'un groupe sélectionnable d'emplacements de réception sont disposés coaxialement par rapport aux axes de broches (115-1, 115-2) des broches d'outil.
EP20747382.8A 2019-08-09 2020-07-27 Machine de perçage en profondeur Pending EP4010147A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102019211997.2A DE102019211997A1 (de) 2019-08-09 2019-08-09 Tiefbohrmaschine
DE202019104405.5U DE202019104405U1 (de) 2019-08-09 2019-08-09 Tiefbohrmaschine
PCT/EP2020/071113 WO2021028205A1 (fr) 2019-08-09 2020-07-27 Machine de perçage en profondeur

Publications (1)

Publication Number Publication Date
EP4010147A1 true EP4010147A1 (fr) 2022-06-15

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ID=71846388

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Application Number Title Priority Date Filing Date
EP20747382.8A Pending EP4010147A1 (fr) 2019-08-09 2020-07-27 Machine de perçage en profondeur

Country Status (2)

Country Link
EP (1) EP4010147A1 (fr)
WO (1) WO2021028205A1 (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113319586A (zh) * 2021-08-04 2021-08-31 徐州博科工程机械有限公司 一种可自动换刀的金属加工机床
CN117359023B (zh) * 2023-12-07 2024-02-02 金洲精工科技(昆山)有限公司 插齿刀的压紧定位装置及其方法、数控机床

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3338308A1 (de) * 1983-10-21 1985-05-09 Tbt Tiefbohrtechnik Gmbh Und Co Kg, 7433 Dettingen Wechselarm fuer eine vorrichtung zum werkzeugwechsel bei einer tiefbohrmaschine
DE19608350A1 (de) * 1996-03-05 1997-09-11 Hueller Hille Gmbh Verfahren zur Bearbeitung von Werkstücken mit zwei parallel zueinander angeordneten Arbeitsspindeln auf einem Spindelstock und Werkzeugmaschine zur Durchführung des Verfahrens
ES2167146B1 (es) * 1999-04-19 2003-11-01 Etxetar Sa Maquina para taladrar agujeros de engrase en cigueñales y procedimiento correspondiente.
DE29907963U1 (de) * 1999-05-05 1999-07-29 Honsberg Lamb Sonderwerkzeugmaschinen GmbH, 42855 Remscheid Werkzeugmaschine zum Bearbeiten von Kurbelwellen
DE19938856A1 (de) 1999-08-17 2001-02-22 Tiefbohrtechnik Gmbh Tbt Tiefbohreinrichtung
DE10208572A1 (de) * 2002-02-21 2003-09-11 Ex Cell O Gmbh Werkzeugmaschine
DE102005028358A1 (de) * 2005-06-18 2006-12-21 Alfing Keßler Sondermaschinen GmbH Bearbeitungsmaschinenanordnung mit Roboter und Werkzeugmagazin

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