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
  • B23Q1/01—Frames, beds, pillars or like members; Arrangement of ways
  • B23Q1/015—Frames, beds, pillars
• • 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
  • B23Q1/48—Movable or adjustable work or tool supports using particular mechanisms with sliding pairs and rotating pairs
  • B23Q1/4828—Movable or adjustable work or tool supports using particular mechanisms with sliding pairs and rotating pairs a single rotating pair followed parallelly by a single sliding pair
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
  • 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
• • 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
  • B23Q7/00—Arrangements for handling work specially combined with or arranged in, or specially adapted for use in connection with, machine tools, e.g. for conveying, loading, positioning, discharging, sorting
  • B23Q7/04—Arrangements for handling work specially combined with or arranged in, or specially adapted for use in connection with, machine tools, e.g. for conveying, loading, positioning, discharging, sorting by means of grippers
  • B23Q7/041—Arrangements for handling work specially combined with or arranged in, or specially adapted for use in connection with, machine tools, e.g. for conveying, loading, positioning, discharging, sorting by means of grippers step by step
  • B23Q7/042—Arrangements for handling work specially combined with or arranged in, or specially adapted for use in connection with, machine tools, e.g. for conveying, loading, positioning, discharging, sorting by means of grippers step by step for the axial transport of long workpieces

Definitions

• the invention is based on a machining center according to the preamble of patent claim 1. Furthermore, the invention relates to a method for machining workpiece blanks
• a machining center is a Maschinen Swissbearbeitungsmaschi ⁇ ne, which is equipped for automated operation.
• the principle of workpiece processing machines such. As factory ⁇ grinding machines, milling machines, lathes or ähnli ⁇ chen, has long been known. These serve on the one hand to the in ⁇ stand set of tools, that is, for example, for after ⁇ sharpen the cutting edges of cutting tools, wherein the geometry as such again made possible, who the should ⁇ , on the other hand for processing a Maschinen Swissroh ⁇ lings, that is, for example, for the preparation of a rotary part or for milling grooves or the like and complicated milling ⁇ parts.
• Machining centers can be subdivided according to the number of movement axes assigned fixed designations, which are also used in this description.
• Ty ⁇ are pisch three- and five-axis machining centers. May play to the examples, a five-axis machining center as a so- ⁇ -called horizontal machining center, wherein a spindle is mounted horizontally, two translational motion axes, namely a so-called X-axis and a so-called Z-axis translational in a workpiece carrier and a Movement axis, namely a so-called Y-axis, in a processing ⁇ head, which receives a machining tool have.
• the X-axis runs in the direction of a feed direction in which a workpiece blank in the workpiece carrier is clamped to a clamping direction. medium is supplied.
• the Z axis is perpendicular to the X axis.
• the Y axis is perpendicular to a plane spanned by the X and Z axes.
• a five-axis machining center has two Rotatori ⁇ specific axes.
• the machining head is a so-called B-axis extending in a vertical direction, which can pivot ⁇ bar.
• a clamped in the workpiece carrier the workpiece blank is in a manner known to those skilled in the workpiece-carrying spindle motor about a rotational axis of the motor spindle, a so-called ⁇ C-axis, rotatable.
• EP 265 727 Bl discloses a processing 1 ⁇ center of the type mentioned.
• the object of the invention is therefore to provide a machining center having an improved Ge ⁇ accuracy in the positioning of a workpiece blank and improved process accuracy in machining of the workpiece blank in the machining center.
• the object of the invention is achieved by a machining ⁇ center with the features of claim 1 and a Ver ⁇ drive with the features of claim 15.
• the machining center according to the invention has a Maschi ⁇ nencompanyr, a working plate which is carried by the machine frame and arranged horizontally, a workpiece carrier with a clamping means and a processing head for holding a processing tool on.
• the invention is characterized in that the workpiece carrier comprises a channel for supplying workpiece ⁇ blanks to the clamping means, and the processing ⁇ center comprises a feed unit for feeding workpiece blanks into and within the channel in the direction of the clamping means to.
• the inventive feeding of the workpiece blank through the channel of the workpiece carrier in the direction of the clamping means wear on the instep ⁇ medium as compared to an insertion in the direction of the side of the workpiece carrier on which the clamping means is arranged to be kept low, because the Position of the blank is specified by the channel exactly.
• a channel can be realized, for example, as a centric bore in the workpiece carrier, which extends along the X-axis from its head, which is further away from the machining head during machining of the workpiece blank, toward the clamping means.
• the workpiece raw ling is pushed by the feed unit through the channel to the clamping means.
• several workpiece blanks can of course also be located in the channel, which can then be moved in the direction of the clamping device when a further workpiece blank is inserted. If a tool blank then has its clamping position in which it is to be held for machining the tool blank, he ⁇ enough, it can be fixed with the clamping device.
• the machining center a Maschinenrah ⁇ men with a first support column, wherein the feed unit is disposed on the first support column and the first support column has a through opening at least, so that a work ⁇ rough part by means of the advancing unit through the passage ⁇ opening into the channel is insertable.
• An ⁇ order of the feed unit to the first support column it is possible to arrange it outside the processing space, if a through hole is present.
• the arrangement of the pre ⁇ feed unit, however, taken at the first support column in itself is advantageous because while advancing occurring Störef ⁇ fect, such as vibration or temperature rises, which can lead to a process inaccuracy of the first support ⁇ pillar be caught.
• the machining center ⁇ a loading system comprising a guide member for Füh ⁇ ren the workpiece blanks. Kings ⁇ nen with the loading system are fed automatically to the machining center workpiece blanks.
• the loading system to a arranged on the first support column loading ⁇ magazine, so that the workpiece blanks from the loading magazine can be brought to the guide member.
• the loading magazine can be a storage container with a prism. Workpiece blanks can fall out of the storage container into a prism and be pushed by the feed unit via the guide element into the workpiece carrier.
• the loading magazine can also be designed as a rotatable loader disk, in which the work ⁇ piece blanks are arranged in individual chambers in a circle.
• the loader washer not only serves as storage for workpiece blanks, but also as a loading magazine, similar ei ⁇ nem designed as a rotatable drum cartridge bearing block ei ⁇ nes revolver.
• the guide element extends through the through ⁇ opening and is a guide rail or a transfer ⁇ sleeve.
• a loading magazine which is designed as a storage container with a prism
• the workpiece blanks can be performed ⁇ easily over the guide rail.
• a transfer sleeve is advantageous for guiding the workpiece blanks.
• an adapter sleeve for guiding work pieces ⁇ blanks is arranged in the channel to allow an adjustment of the channel cross-section to the cross-section of a workpiece blank.
• a machining center for machining very different workpiece blanks, by using interchangeable adapter sleeves ⁇ then be used.
• the workpiece blanks are pushed into the adapter sleeve and guided by this during advancement into / within the channel in the direction of the clamping device.
• locking elements are arranged ⁇ on the first support column is, by means of which the loading system is displaceable parallel to a ver tical ⁇ axis.
• the vertical displacement of the loading system ensures that the workpiece blanks with different diameters can always be centrally inserted into the workpiece ⁇ carrier.
• the adapter sleeve interchangeability of the adapter sleeves is made possible.
• adapter ⁇ sleeves with different inner diameters in the channel are ⁇ tensioned.
• an adapter sleeve matching the diameter can be clamped in the channel of the workpiece carrier, in which the workpiece blank to be machined can then be guided .
• ⁇ leads That is, with a workpiece carrier workpiece blanks can be clamped with different diameters.
• the workpiece carrier has at least one on ⁇ impact means with which the position of the workpiece blank is verifiable.
• abutment means can thus be CONTROL ⁇ lines whether the workpiece blank is pushed forward in the workpiece carrier, that the workpiece blank is arranged with a predetermined length in the clamping device.
• the An ⁇ impact means can pass a corresponding signal to the feed unit to additionally control the Vorschiebevorgang.
• the workpiece carrier is movably mounted on the work surface at least in the direction of the X-axis, that is to say parallel to the feed direction in which the workpiece blanks are displaced.
• This enables in particular to bring the workpiece carrier into a loading position near the through-loading what he ⁇ facilitated.
• this movement can advertising used to the to remove a finished tool blank from the instep ⁇ medium after it has been released.
• the finished tool blank must only still with a decision ⁇ loader, for example, a gripper, and added be kept from being pulled out of the finished tool blank with the discharging device is no longer northeast ⁇ tig.
• the workpiece carrier is movable with at least one driving element on the worktop, wherein the
• Driving element and / or the worktop a natural hard stone exhibiting component, in particular granite is. Due to the high rigidity of granite, the process of the workpiece carrier can be carried out precisely.
• the machining center has at least one 3D measuring system for determining the position of the workpiece blank and / or the machining tool.
• the 3D measurement system may include a workpiece ⁇ pushbuttons, with which a position of the workpiece blank can be measured in the workpiece carrier.
• the 3D measuring system can have a button arranged on the workpiece carrier with which a position of the machining tool can be measured.
• the individual axes of the machining center ⁇ tung each case at least one reference switch, by means of which reference points can be created at a start of the individual axes with the workpiece carrier and the machining head of the machining center.
• a two ⁇ te support column of the machine frame at least one substantially the passage opening opposite arranged Ent ⁇ receiving opening.
• machined workpiece blanks can be removed from the machining center who ⁇ .
• the machining center a discharge device for removal of a machined work piece ⁇ blank through the removal opening.
• the discharge device may be a gripper, with which the machined workpiece blank automated through the removal opening can be ent ⁇ taken.
• an unloading station is arranged on the second support column, in which the machined workpiece blank can be received by the unloading opening by means of the unloading device.
• Arranging, insbeson ⁇ particular direct fastening, the unloading station to the second support column has the advantage that finished workpiece blanks need not be in a separate space of the machining center unloading accommodated. In such an operation, additional inaccuracies can play Chippings, arise in ⁇ through occurring to the unloading station during the bringing of the finished workpiece blanks Erschüt-. In contrast, the process is exactly ⁇ accuracy can be improved with an arrangement according to the preferred embodiment of the invention.
• the inventive method for the processing of workpiece blanks in an inventive machining center has the following method steps: a) advancing at least a workpiece blank in the Ka ⁇ nal or in the channel of the workpiece carrier with the forward feed unit in the direction of the clamping means,
• step a) of the method the workpiece blank is thus fed through the Maschinentschträ ⁇ ger the clamping means in this process, so to speak "from behind", instead of being introduced into the clamping means from the processing side as before.
• the loading of the workpiece carrier by the workpiece carrier therethrough results in a high accuracy in the positioning of the workpiece blank, resulting in a highfsgenauig ⁇ ness.
• a lesser wear on the clamping means in comparison to an introduction of the workpiece blank in a side of the workpiece blank, on which the clamping means is arranged.
• a stopper means a position of at least one workpiece ⁇ blank in the channel of the workpiece carrier.
• the stop means can pass a corresponding signal to the feeding unit, to control the Vorschiebe ⁇ process additionally.
• the workpiece carrier is moved to a loading position before the execution of method step a) and, after execution of method step b), but before execution of method step c), of the workpiece.
• At least one 3D measurement system determines a Posi ⁇ tion of the clamped in the workpiece support Maschinen Anlagenroh- astride, and / or a position of the machining tool.
• the 3D measuring system can have a workpiece probe with which a position of the workpiece blank in the workpiece carrier can be measured.
• the 3D measuring system can have a button arranged on the workpiece carrier with which a position of the machining tool can be measured.
• the individual axes of the machining center ⁇ tung each have at least one reference switch on.
• this reference switch can reference points of each Oh ⁇ sen created with the workpiece carrier and the machining head of Bear ⁇ beitungstechniks.
• the following method steps are carried out after process step c): d) picking up a machined workpiece blank with an unloading device,
• the workpiece carrier is brought into the loading position.
• This process enables a seamless process flow. While a workpiece blank is inserted into the work piece carrier ⁇ , at the same moment the finished workpiece from the unloading is suit ⁇ taken. The process times can be reduced.
• a machining process can be carried out cyclically with the method.
• FIG. 1 shows a side view of an embodiment of a machining center according to the invention
• FIG. 2 shows a perspective view of the machining center according to FIG. 1,
• FIG. 3 shows a further perspective view of the machining center of Figure 1 ⁇ tung
• Figure 4 is a further perspective view of the machining center of Figure 1 ⁇ tung
• Figure 5 is a perspective view of an exemplary embodiment of a workpiece carrier and a processing ⁇ head of a machining center of Figure 1,
• FIG. 6a shows a detail enlargement of an exemplary embodiment of a loading system of a machining center of Figure 1
• 6b shows a cross-sectional view of the loading system according Fi gur ⁇ 6a
• 7a is a sectional view of an embodiment of a disk loader of a machining center of Figure 1
• FIG. 7b is a perspective view of a loader disk according to FIG.
• FIG. 7a
• Figure 8 is a sectional view of an embodiment of a workpiece carrier of a machining center ge ⁇ Yamass Figure 1,
• Figure 9 is a side view of a workpiece carrier according to FIG.
• FIG. 8 shows a perspective view of a workpiece carrier according to FIG. 9.
• like reference numerals designate like parts with the same meaning.
• FIG. 1 An embodiment of a processing center 1 according to the invention is shown in side view in the figure 1 and in perspective ⁇ view in the figures 2 to 4 respectively.
• the machining center 1 has a machine stand 3 in a per se known embodiment, which receives all components or groups of components.
• the machine stand 3 carries a worktop 4, which is arranged horizontally and provided with a high-precision and surface-ground surface.
• a longitudinal support 60 and a transverse support 61 are arranged on the worktop 4, a longitudinal support 60 and a transverse support 61 are arranged.
• the longitudinal support 60 and the transverse support 61 are operated by means of linear motors, but can also each be equipped with a spindle drive.
• the longitudinal support 60 and the transverse support 61 form a cross ⁇ slide, which receives a workpiece carrier 5.
• the cross ⁇ slide is an example of a driving element with which the workpiece carrier can be moved.
• the machining center 1 has a panel 90 and a control cabinet 80.
• the panel 90 protects an operator from parts detaching from a workpiece blank 21a during machining.
• In the switching cabinet ⁇ electronics 80 is arranged for a CNC controller of the machining center ⁇ processing. 1
• An operating unit 100 for the Work center 1 is connected via a pivot arm 110 to the cabinet 80.
• the workpiece carrier 5 receives the to be processed Maschinen Swissroh- ling 21a, which is for example a workpiece, wel ⁇ ches to be processed for example by means of grinding or a milling cutter.
• the Werk Swissträ ⁇ ger 5 a on a side 31 a clamping means 40 for example a collet, on, are clamped with the workpiece blanks 21a for processing in the workpiece carrier.
• the clamping ⁇ medium 40 is arranged in a clamping device holder 41.
• the workpiece blanks 21a preferably have a diameter of 1.0 mm to 10.0 mm and a length of up to 150 mm.
• a machining ⁇ processing head 7 For machining of the workpiece blank 21a a machining ⁇ processing head 7 is provided which is height-adjustably mounted on a machining column 8 in known manner along a Y-Y axis.
• the processing column 8 is arranged vertically extending at one end of a first support arm 11, which is led out beyond the worktop 4.
• the loading ⁇ processing column 8 and a B-B axis, which is parallel to a vertical axis V with it the working head 7 can be pivoted.
• the machining head 7 can be pivoted about the B-axis B around the work surface 4 around the ⁇ .
• a machining tool 6 is accommodated, which is mounted for example in a powered by a motor 9 motor spindle.
• FIG. 5 shows a workpiece-carrying motor spindle in which the workpiece blank 21a is mounted and about a C-axis C, which corresponds to the axis of rotation of the motor spindle, is rotatable.
• a bearing point 13 is arranged above the machining head 7 in the axial extension of the vertical axis V.
• a second connected to the processing column 8 support arm 12 is mounted for the processing column 8.
• the bearing 13 is located in a recess of an upper part 16 of a machine frame 10.
• the machining head 7 together with the workpiece carrier 5 is shown in detail in FIG.
• the machine frame 10 is composed of a first support column 14 and one of these oppositely arranged second support column 15, on which the upper part 16 rests.
• the workpiece carrier 5 has a channel 30 for supplying workpiece blanks 21a to the clamping means 40 and a feed unit 20b EXISTING ⁇ , with the workpiece blanks inserted 21a toward the tensioning means 40 in the channel 30 and through channel 30 can be pushed through.
• the clamping means 40 is arranged on one side 31 of the workpiece carrier 5.
• the advancement can take place electrically, hydraulically or pneu ⁇ matically.
• the feed unit 20b is on Cylinder. With the feed unit 20b is brought into an on ⁇ thrust direction vorderster workpiece blank 21a into a Klemmpo ⁇ sition, being able to be clamped by the clamping means 40 in the clamping position the foremost workpiece blank 21a.
• the clamping of the foremost workpiece blank 21a is controlled with ⁇ means of a stop means 50, see Figures 8 to 10.
• the stop means 50 measures a position of the foremost workpiece blank 21a in the clamping means 40.
• An in-the clamping means 40 of length of Maschinen Anlagenroh ⁇ astride 21a with a predetermined value agree, that is, be ⁇ there is the workpiece blank 21a in the clamping position, a corresponding signal to the stop means 50 is generation riert and passed it to the drive unit 20b to stop the feed operation.
• a corresponding signal is passed to the pre ⁇ feed unit 20b to nachzupositionieren the foremost workpiece ⁇ blank 21a.
• In the workpiece carrier 5 one pushed workpiece blanks 21a are Darge ⁇ represents in FIG. 8
• an adapter sleeve 33 is arranged, which is shown in the figure 8. For better centering of a workpiece blank 21a in the Adapterhül ⁇ se 33 this may have a run-in chamfer. Further, the adapter sleeve 33 at one end, with which the adapter sleeve 33 adjacent to the clamping means 40, a taper to verbes ⁇ serten insertion of a workpiece blank 21a in the clamping means 40.
• a correspondingly configured adapter sleeve 33 can be inserted and / or exchanged in the channel 30 in order to produce the workpiece blank machining center with different chen cross sections usable.
• a fixation of an inserted into the channel 30 adapter sleeve 33 can be achieved by any means, for example with a cap nut ⁇ ter.
• the mounting of the adapter sleeve 33 in the channel 30 is damped with damping means 36, for example O-rings.
• the clamping means 40 can be tensioned ⁇ the.
• the clamping means 34 in particular a clamping piston 35, which is arranged on one side 32 of the workpiece carrier 5. With the clamping piston 35, the clamping means 40 is pulled in the clamping device holder 41 in the direction of the second side 32, whereby the clamping means 40 clamps the Werk Swissroh ⁇ ling 21 a.
• a portion of the first support column 14 on which the integrated Vorschubein ⁇ 20b is disposed, the second support column 15 and / or of the upper part 16 is made of granite.
• the Fahrele ⁇ ment that is, the longitudinal support 60 and the transverse support 61, each made of granite.
• the worktop 4 is at least partially made of granite.
• the com plete ⁇ machine frame 10 that is the first support column 14, the second support column 15, the top part 16 and the action plate 4 may be constructed from granite components.
• a loading system 20 is arranged, having a loading magazine 20a, set ⁇ taken in the workpiece blanks 21a, and a guide member 22 for guiding the work piece ⁇ blanks 21a through the through-opening 24th
• the loading system 20 is parallel to the axis V Vertika ⁇ len displaceable. Due to such a height shift Possibility of the loading system 20 are workpiece blanks 21 a un ⁇ depending on the respective diameter or the respectively ver ⁇ used adapter sleeve each inserted centrally into the channel 30 of the workpiece carrier 5.
• the loading magazine 20a which is Darge ⁇ represents in the figures 6a and 6b, is formed as a reservoir with a prism 20d.
• the prism 20d is open at the top. From the reservoir workpiece blanks 21a fall over an inclined surface separated into the prism 20 d and can be pushed by the feed unit 20 b via the guide member 22 which passes through the passage opening 24 to the channel 30, in the work ⁇ piece carrier 5.
• the guide element 22 is ei ⁇ ne guide rail 22 a, on which the workpiece blank is simply pushed through the passage opening 24 and into the channel 30 in the direction of the clamping means 40 out.
• a rotatable loading disc 20e As a loading magazine but can also be provided a rotatable loading disc 20e, which is shown in Figure 7a in cross-section and in Figure 7b in a perspective view.
• the workpiece blanks are circularly arranged in individual chambers 20f ⁇ NEN 21a.
• the loader disk 20e serves not only as a bearing for the workpiece blanks 21a, but also as a loading magazine, similar to one rotatable drum formed cartridge bearing block of a revolver.
• a work piece blank is inserted 21a in a plane passing through the through hole 24 transfer ⁇ sleeve 22b of the feed unit 20b in the workpiece carrier 5 from the loader disc 20e.
• the through-opening 24 opposite is arranged on the second support column 15, a removal opening 25, removed by a machined workpiece blank 21b and obtain at a arranged on the second support column 15 unloading station 26 ⁇ sets.
• An unloading operation of a finished workpiece blank 21b is carried out by means of an unloading device 70.
• the unloading device 70 is shown in Figures 9 and 10, for example, as a gripping arm.
• a lower boundary surface of the passage opening 24 and a lower boundary surface of the removal opening 25 lie in egg ⁇ ner levels. With such an arrangement, a transition-free ⁇ process flow can be improved.
• the loading system is first filled with 20 work ⁇ piece blanks 21a.
• the workpiece blanks 21a fall onto the guide rail 22a, which may be, for example, a prismatic rail. Accordingly, workpiece blanks 21a are brought out of the loader disk 20e into the transition sleeve 22b.
• the workpiece blanks are schin frame pneumatically, hydraulically or electrically suitably pushed 21a through the through hole 24 of the first support column 14 of the ma- 10 in a to a diameter of the workpiece blanks 21 into the channel 30 of the workpiece carrier 5 is moved Adapterhül ⁇ se 33rd
• the workpiece carrier 5 is by means of Longitudinal support 60 and the cross support 61 along the X-X axis and the Z-axis Z in a loading position in which Maschinen Anlagenroh ⁇ linge ⁇ are introduced from the loading magazine 20a ge on a guide element 22, driven.
• the workpiece blanks 21a are at the clamping means 40 ge ⁇ opposite side 32 inserted into the adapter sleeve 33 by means of the feed unit 20b. It is within the scope of the dung OF INVENTION ⁇ that only one workpiece blank 21a is inserted into the adapter sleeve 33 of the workpiece carrier 5 or that meh ⁇ eral workpiece blanks are inserted into the adapter sleeve 33, 21a.
• the stop means 50 measures the position of a forwardmost workpiece blank 21a in the feed direction, that is to say the workpiece blank 21a to be processed next, in the clamping means 40. If a length dimension of the workpiece blank 21a located in the clamping means 40 coincides with a predetermined value means there is the workpiece blank 21a in the clamping position, a corresponding signal of the stop means 50 is stopped at the feed unit 20b wei ⁇ terleton and the feeding operation. Deviating from the predetermined value, a corresponding signal is forwarded to the feed unit 20b in order to reposition the foremost workpiece piece blank 21a.
• the tensioning means 40 then clamps the workpiece blank 21a in the clamping position.
• the workpiece carrier 5 by means of the longitudinal support 60 and the cross support 61 along the X-X axis and Z-axis Z is ge ⁇ drive into a working position in which the working tool 6 can process the workpiece blank 21a in the clamping position.
• the machining center 1 has a 3D measuring system, are determined by the position of the clamped in the workpiece carrier work ⁇ piece blank and / or position of the machining tool.
• the 3D measuring system has a workpiece key with which a position of the workpiece blank in the workpiece carrier can be measured.
• the 3D measuring system alternatively or additionally, an arranged on the work piece carrier ⁇ button, with which a position of the machining tool can be measured. Furthermore, it is possible that the individual axes of the machining center each have a home switch at least with which reference points can be created at a start of the individual axes with the workpiece carrier and the machining head of the machining center ⁇ rums.
• a machining of the work piece blank ⁇ 21a by means of the machining tool is 6.
• the game ⁇ workpiece blank 21a rotates in a
• the machining tool 6 for example by ei ⁇ ne motor spindle, rotates about its longitudinal axis.
• the machining tool can be swiveled about the B-B axis 6 by means of the mounted on the pressschu ⁇ le 8 processing head.
• the individual movements along the axes X, Y, C and B are shown for example in FIG.
• the Be ⁇ movement along the Z-axis Z is, for example, in Figure 4 it ⁇ clearly.
• the finished workpiece blank 21 b is from a
• Unloading device 70 such as a gripper,3% men.
• the clamping device 40 is then opened and moved from the machining position into the machine by moving the workpiece carrier 5.
• loading position of the machined workpiece blank 21 b is removed with the unloading device 70 from the workpiece carrier 5 and through the removal opening 25 into the unloading station 26 ⁇ leads.
• a further work ⁇ piece blank is inserted 21a with the feed unit 20b in the sition in the Beladepo- retracted workpiece carrier 5, so ⁇ that a vorderster in the feed direction of the workpiece blank can be brought 21a again into a clamping position for a Be ⁇ processing with the processing tool 6th
• the loading and processing operation can thus cyclically he follow ⁇ , which process times can be minimized.
• Insbeson ⁇ particular the machining process can be carried out fully automated by means of CNC-control.
• the entire loading and unloading system with the entire machine allows extremely cost-effective production. Due to the granite construction, which has a very high rigidity and extremely low thermal expansion, a machining center 1 is provided, with which a high process accuracy can be achieved with minimal process times.
• the method according to the invention can be used for example in a grinding process.
• the loading magazine 20a with a prism 20d is loaded with workpiece blanks 21a or other round, cylindrical or cross-sectionally symmetrical parts.
• the workpiece blanks 21a fall into a correspondingly adapted prism 20d.
• the workpiece blank 21a is pushed in closing ⁇ by a pneumatic, hydraulic or electrically operable feed unit 20b via the prism 20d and the guide rail 22a in the adapter sleeve 33rd Since ⁇ the workpiece carrier 5 is placed over the X and Z axis in the position in which the workpiece blank 21a from the rear can be pushed by the workpiece carrier 5 in the clamping means 40.
• the workpiece blank 21a is pushed to a fixed stop or monitored by a 3D measuring system as far as desired by the clamping means, wherein the length dimension is exactly be ⁇ true. Characterized the Vorschiebevorgang is additionally controlled and given a corresponding signal to the Vorschubein ⁇ unit 20b of the loading system 20 on. Now, the grinding process to create a desired istgeo ⁇ metry or other grinding processes are performed or start.
• a discharge device 70 such as a gripper
• the finish machining ⁇ ended workpiece blank from the front on the workpiece carrier 5 from. This takes place on the opposite side of the loading system 20.
• the gripper places the finished tool in a loading machine 20 opposite side of a machine body in a corresponding unloading station 26, crizspielswei ⁇ se a pallet or other depositing device.
• an already further workpiece ⁇ blank 21a in order to realize a fast WEI teres loading, nachgeschoben and either this or the workpiece blank 21a prior ⁇ already derste in the channel 30 of the workpiece carrier 5 located pushed into the clamping position where it is fixed by the clamping means 40.
• the entire loading and grinding process can start immediately.
• the process is characterized in that it is cyclical and can be done by him a fast loading and unloading.
• the loader Ver ⁇ driving disc can be loaded with 20e workpiece blanks 21a or corresponding parts.
• the loader disk 20e is brought into position by a rotary motion for passing a new workpiece blank 21a. This happens be ⁇ preferably already during the grinding of the currently to be looped ⁇ fenden workpiece blank 21a.
• the loading disc 20e may be electrically powered.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Jigs For Machine Tools (AREA)
• Gear Processing (AREA)
• Feeding Of Workpieces (AREA)
• Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)

Priority Applications (2)

Applications Claiming Priority (2)

Publications (1)

Family

ID=57199938

Family Applications (1)

Country Status (4)

Citations (2)

Family Cites Families (4)

• 2015
  • 2015-09-18 DE DE102015115846.9A patent/DE102015115846A1/de active Pending
• 2016
  • 2016-09-15 WO PCT/EP2016/071870 patent/WO2017046270A1/de active Application Filing
  • 2016-09-15 CN CN201680054482.6A patent/CN108367404B/zh active Active
  • 2016-09-15 KR KR1020187010133A patent/KR102572267B1/ko active IP Right Grant

Patent Citations (3)

Also Published As

Similar Documents

Legal Events