Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
  • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
• • 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
  • B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
  • B23Q3/18—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for positioning only
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
  • B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
  • B23K37/02—Carriages for supporting the welding or cutting element
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
  • B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
  • B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
  • B23K37/0426—Fixtures for other work
  • B23K37/0435—Clamps
  • B23K37/0443—Jigs
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
  • B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
  • B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
  • B23K37/0426—Fixtures for other work
  • B23K37/0452—Orientable fixtures
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B24—GRINDING; POLISHING
  • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
  • B24B27/00—Other grinding machines or devices
  • B24B27/003—Other grinding machines or devices using a tool turning around the work-piece
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B24—GRINDING; POLISHING
  • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
  • B24B27/00—Other grinding machines or devices
  • B24B27/0038—Other grinding machines or devices with the grinding tool mounted at the end of a set of bars
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B24—GRINDING; POLISHING
  • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
  • B24B27/00—Other grinding machines or devices
  • B24B27/0084—Other grinding machines or devices the grinding wheel support being angularly adjustable
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B24—GRINDING; POLISHING
  • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
  • B24B41/00—Component parts such as frames, beds, carriages, headstocks
  • B24B41/02—Frames; Beds; Carriages
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B24—GRINDING; POLISHING
  • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
  • B24B41/00—Component parts such as frames, beds, carriages, headstocks
  • B24B41/06—Work supports, e.g. adjustable steadies
  • B24B41/067—Work supports, e.g. adjustable steadies radially supporting workpieces

Definitions

• the present invention relates to a device for mutual positioning of a workpiece and a tool, which are held in a respective holding device, comprising an inner holding device arranged on a table, and an outer holding device accommodated on a feed device.
• a tool When machining workpieces, it is customary for a tool to be brought into an exact position with respect to a workpiece to be machined and held there for machining.
• grinding machines for tool machining or even machine tools generally multi-axis processing machines with assemblies, drives and controls are faced with high demands.
• the workpiece is usually inserted into the machine tool or its recording and brought into engagement of the tool of the machine tool. Due to the fixed support of the workpiece in the workpiece holder this can be processed position-stable.
• Such a device and an associated processing method is previously known, for example, from WO 2001/66302 A1.
• the object of the present invention is to propose an alternative machine concept which combines functions of a machine tool and an automation unit and thus overcomes the disadvantages of the prior art.
• an automation unit moves the axes of a fixed device while, in turn, the fixed device fixes the automation unit.
• an apparatus for mutual positioning of a workpiece and a tool provides an inner holding device and an outer holding device.
• the inner holding device is here regularly diejeni- ge, which is attached to a table and thereby fixed in position fixed.
• the outer holding device is brought to the inner holding device.
• one holding device can hold the workpiece and the other holding device can hold the tool, both solutions being considered within the scope of the invention and intended to be protected.
• the outer guide device is brought to the inner holding device via a feed device, which may preferably be a metal solution or a robot arm.
• the invention further provides a positioning unit having a position sleeve through which the outer holder or the workpiece is inserted.
• the positioning unit is rotatably mounted around a first main axis of rotation about the inner holding device, in this way, due to attachment of the positioning unit on the same table, pushing away of the outer holding device can be reduced as a lever for pushing away the feed device no longer the entire feeding device, but only the tool to the inner holding device, which is received in the position sleeve is available.
• the feed device can easily insert the outer holding device into this position sleeve.
• a solution is thus created which combines the advantages of processing by machine tools with the advantages of the use of automation units.
• the position sleeve can also be rotatably mounted about a first sleeve rotational axis. This makes it possible to align the outer holding device not only on the first main axis of rotation, but also at an angle skewed to deliver. Using the example of an automatic grinding machine, this makes it possible to work not only on the tip of a brought-up workpiece, for example a drill, but also on its flanks.
• the positioning device in which the position sleeve is arranged in a wall of an inner sliding ring, which slides in a concentrically arranged outer sliding ring along its inner surface.
• the outer sliding ring in this case has an elongate first through-opening, so that the position sleeve remains accessible even when the sliding rings rotate against each other.
• the position sleeve in this configuration is to be movable about its axis of the sleeve, the position sleeve is rotatably mounted in the sliding ring on a pivotable bearing, so that a variable angle between the wall of the inner sliding ring and the position sleeve can be assumed.
• the inner holding device can penetrate the two slide rings from the bottom and thus be arranged vertically. Then, the inner holding device is located approximately in the middle of the two sliding rings, depending on how far the inner holding device protrudes. In order for this to be possible, the inner sliding ring must also have an elongate second through-opening, through which an attachment of the inner retaining device, possibly this being the machine tool itself, can protrude. In the case of a grinding machine, in this configuration, the spindle would be vertical and a grinding wheel would be aligned parallel to the table.
• the position sleeve can also be rotatably mounted about a second main axis of rotation about the inner holding device.
• the rotational position about a second main axis of rotation which is preferably perpendicular to the table is irrelevant.
• the inner holding device either horizontally protrudes into the sliding rings, ie their annular opening, or if it holds the tool or workpiece in this annular opening.
• Such a rotation about the second main axis of rotation insofar as it is oriented perpendicularly to the table, can be realized by positioning the outer sliding ring on a turntable associated with the table. In this way, even in the case of a horizontal arrangement of the inner holding device, in the case that it carries, for example, a vertically oriented grinding wheel, a further degree of freedom between the workpiece and the tool is made possible.
• this can be designed as a carriage solution constructed around the inner holding device.
• the position sleeve is additionally rotatably mounted around a second sleeve rotational axis.
• a positionable sleeve rotatable in two directions results.
• the carriage can in this case on at least one guide rail in the circle around the first main axis of rotation, in this case a vertical Rotary axis to be moved. If necessary, a further degree of freedom can be obtained by the suspension of the carrier ring on the carriage is additionally height adjustable.
• the feed device can be designed as a robot arm.
• the positioning device is made passive and, after the insertion of the outer holding device into the position sleeve, is co-actuated by the movements of the robot arm. While the positioning device can carry out the movement directions given to it, it denies the non-existent degrees of freedom and again supports the otherwise relatively long robot arm shortly before the counterpart.
• the orientation of the outer holding device can be adjusted by at least one, preferably two angular degrees of freedom.
• a support table can be arranged below the machine tool carrying the inner holding device in this case, on which a workpiece brought in by the feed device can again be supported.
• the support table may have a support sleeve, which may also be suitable for at least partially inserting the workpiece. Furthermore, such a support sleeve can be height-adjustable connected to the support table to allow a more accurate positioning.
• the tool can be used as a grinding element or be executed as a milling element.
• Other known tool attachments are possible.
• the inner holding device holds the workpiece, this means that the feeding device brings the tool into the position.
• the outer holding device carries a tool laser with which the workpiece received in the inner holding device processes. By positioning device, the feeder is held exactly in position.
• individual or all axes of the positioning device can be actively operated with servomotors or other drives.
• FIG. 1 shows a grinding element and three workpieces in different relative grinding positions in a perspective view
• FIG. 2 shows a positioning device with a robot arm as a feed device and a horizontally arranged machine tool in a perspective representation obliquely from the front
• FIG. 3 shows the positioning device according to FIG. 2 in a perspective view from obliquely behind
• FIG. 4 shows the positioning device according to FIG. 2 in a cross-sectional representation through the middle of the sliding rings
• Figure 5 shows an alternative positioning device with a
• Robot arm as feeding device and a vertically arranged machine tool in a perspective view obliquely from above
• FIG. 6 shows a further alternative positioning device with a position sleeve accommodated on a rail-supported slide in a perspective view obliquely from above and also FIG. 6
• FIG. 7 shows a support table below a horizontally arranged machine tool in a lateral plan view.
• FIG. 1 shows a grinding element 4, with which a machining of workpieces 25 can take place, wherein the machining in the present case, in turn, serves for tool production.
• the workpieces 25 are drills which must be machined in different positions.
• a folding of the workpieces 25 transversely to the grinding element 4 or obliquely below the grinding element 4 is used for grinding grooves and for machining the shaft.
• the workpiece has to be clamped several times for these different processing steps, which as a rule also takes place at several stations. In addition to the provision of the several stations, logistics are required in between, and only identical orders can be processed at once.
• FIG. 2 shows a first embodiment of a combination of a machine tool 1, to which a workpiece 25 is fed by a robot arm 5.
• a positioning unit 8 is provided for exact positioning, which essentially consists of an outer sliding ring 15 mounted on a turntable 18 and a sliding surface concentrically therein - Gerten inner seal ring 14 is constructed.
• the inner slide ring 14 has a positioning sleeve 9, into which the robot arm 5 introduces an outer holding device 6 and thereby brings the workpiece 25 into engagement with a grinding element 4 acting in the middle of the slide rings 14, 15, which is located in an inner Hal - Te Rhein 3 a machine tool 1 is added.
• the turntable 18 can be rotated in its angular position about the second main axis of rotation around 11, while the slip rings 14 and 15 by rotating the inner seal ring 14 relative to the outer seal ring 15 about a first main axis of rotation 10 around relative to each other can be moved to change the azimuthal angle of attack of the workpiece.
• the outer slide ring has an elongate passage opening 16 in order to obtain access to the position sleeve 9 in a plurality of positions.
• the positioning device 8 via the turntable 18 and the robot arm in the present case, there results a position-oriented mutual alignment of the components.
• a movement of the positioning device 8 always occurs due to a movement of the robot arm 5, as far as it moves in the direction of the permissible degrees of freedom. Movements outside the permissible degrees of freedom prevent the positioning device 8.
• the positioning device 8 is a purely passive system, which is completely controlled by the robot arm 5. In the figure 3, the same arrangement is shown again from the opposite side, so that there is a view of the machine tool 1 and its base 2.
• the machine tool 1 projects so far into the interior of the concentric slip rings 14 and 15 that the tool is arranged approximately in the middle of the same. Rotation of the turntable 18 can only take place until the sliding rings 14 and 15 strike the machine tool 1 or its base 2 in extreme cases, rotation of the inner sliding ring 14 only so far that the position sleeve 9 in the area of the access opening 16 the outer slide ring 15 remains.
• Figure 4 also shows a cross-sectional view of the same arrangement, in which, however, the internal structure of the position sleeve 9 can be seen.
• This is accommodated in the inner slide ring 14, wherein it is mounted pivotably about an axis of rotation perpendicular to the plane of the drawing.
• the robot arm 5 has introduced into the position sleeve 9 an outer folding device 6, in which a workpiece 25 (not shown here) can be picked up and brought into engagement with the grinding element 4.
• FIG 5 an alternative embodiment of the positioning device 8 is shown, which is not constructed on a turntable 18, but in which the outer seal ring 15 is fixedly mounted on the table 7.
• the machine tool 1 is arranged vertically with its spindle, so that the grinding element 4 is aligned parallel to the table 7.
• the robot arm 5 is arranged suspended from the ceiling, not shown.
• the inner sliding ring 14 also has an elongated penetration opening, so that the inner sliding ring 14 continues to remain movable.
• the position sleeve 9 is pivotally mounted about a first dielsenburnachse 12 around, so that different angular positions relative to the grinding element 4 can be achieved.
• the inner seal ring 14 and with it the position sleeve 9 can be around the first main axis of rotation 10th turn around, a rotation about the second main axis of rotation 11, however, is not possible.
• FIG. This is based on a carrier frame, which is constructed essentially of two guide rails 21, and a carriage 20, which can be moved in these guide rails 21.
• the carriage 20 consists essentially of a frame which is arc-shaped in the region of the guide rails and receives a support ring 19 between two vertical struts. This is both a height adjustment 22 movable up and down, as well as pivotable about a second sleeve rotational axis 13 around.
• the support ring 19 In its interior, the support ring 19 carries the position sleeve 9, which is rotatable relative to the support ring 19 about a first sleeve rotation axis 10 and thus about its own axis.
• this alternative embodiment allows a similar guidance of an outer holding device 6 in relative position to an inner holding device 3 as the aforementioned devices.
• an actuation via a robot arm 5 or a gantry solution is made possible.
• FIG. 7 shows a horizontally arranged machine tool 1, which has a grinding element 4 as a tool.
• a support table 23 is arranged, on which the workpiece 25 can be additionally placed.
• the support sleeve 24 is height-adjustable attached to the support table and can be in a further step with the workpiece 25 upwards, ie in engagement of the Schleifefs 4, moved. A lateral slipping or pushing away is hereby avoided.
• a device for mutual positioning of a workpiece and a tool is described above, wherein the position of a feed device is supported via a passive positioning device and a deviation from the predetermined degrees of freedom is prevented.

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Physics & Mathematics (AREA)
• Optics & Photonics (AREA)
• Plasma & Fusion (AREA)
• Manipulator (AREA)
• Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=65903858

Family Applications (1)

Country Status (5)

Families Citing this family (6)

Family Cites Families (19)

• 2018
  • 2018-02-09 DE DE102018102994.2A patent/DE102018102994B4/de active Active
• 2019
  • 2019-02-04 WO PCT/DE2019/100116 patent/WO2019154460A1/de unknown
  • 2019-02-04 EP EP19712898.6A patent/EP3749483A1/de not_active Withdrawn
  • 2019-02-04 CN CN201980012888.1A patent/CN111727103A/zh active Pending
  • 2019-02-04 US US16/968,463 patent/US20200398392A1/en not_active Abandoned

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