EP3843938A2 - Vorrichtung zum spanenden bearbeiten von werkstücken - Google Patents
Vorrichtung zum spanenden bearbeiten von werkstückenInfo
- Publication number
- EP3843938A2 EP3843938A2 EP19759557.2A EP19759557A EP3843938A2 EP 3843938 A2 EP3843938 A2 EP 3843938A2 EP 19759557 A EP19759557 A EP 19759557A EP 3843938 A2 EP3843938 A2 EP 3843938A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- drive unit
- housing
- control rod
- control
- free end
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q5/00—Driving or feeding mechanisms; Control arrangements therefor
- B23Q5/02—Driving main working members
- B23Q5/04—Driving main working members rotary shafts, e.g. working-spindles
- B23Q5/06—Driving main working members rotary shafts, e.g. working-spindles driven essentially by fluid pressure or pneumatic power
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q5/00—Driving or feeding mechanisms; Control arrangements therefor
- B23Q5/22—Feeding members carrying tools or work
- B23Q5/26—Fluid-pressure drives
- B23Q5/261—Fluid-pressure drives for spindles
Definitions
- the invention relates to a device for machining workpieces, preferably provided for use in a handling system. More particularly, the invention is directed to a processing device which is intended for use in handling systems in the form of industrial robots which have a program-controlled working unit on the arm of a robot arm.
- DE 10 201 3 206 791 A1 shows a working unit in the form of a so-called robot hand on the arm arm of the robot arm of an industrial robot.
- the object of the invention is to provide a device of the type mentioned at the outset. len, which with a simple and compact design in conjunction with handling systems such as industrial robots, can be used particularly advantageously for machining with rotating tools.
- this object is achieved by a device which has the features of claim 1 in its entirety.
- the invention provides at least one in a Voriquessge housing longitudinally guided rotary drive unit that rotates a cutting tool, and a feed drive unit that moves the rotary drive unit from a rear non-machining position to a front machining position and vice versa.
- a Voriquessge housing longitudinally guided rotary drive unit that rotates a cutting tool
- a feed drive unit that moves the rotary drive unit from a rear non-machining position to a front machining position and vice versa.
- both the rotary drive for a rotary mechanism, such as a drill and the drive for the feed movement are combined in one device housing, the device housing simultaneously forming the longitudinal guide for the rotary drive unit, all of them stand for machining in one structural unit , such as drilling operations, required functional units are available.
- the device according to the invention can therefore be used as a working unit, which works independently with regard to both drive units and feed guide, with particular advantage on a handling system, such as the robot arm of an industrial robot.
- the rotary drive unit has a motor housing which is guided in a longitudinally displaceable manner via a guide device in the device device on its side facing the feed drive unit and is coupled to it at least on its other opposite side by a drive shaft on which the Machining tool can be determined.
- the feed drive unit can advantageously have a control chamber in which a control piston counteracts the force of an energy store Non-processing position pneumatically guided in the processing position ver mobile and is fixed to a control rod of the feed unit, which engages with its free end on the motor housing of the rotary drive unit.
- the rotary drive unit can have a pneumatic motor which is supplied with air by its operating medium via the control rod.
- the design of both drives as pneumatic drives opens up the advantageous possibility of providing the entire energy supply to the device through a single supply unit, such as a compressed air source.
- the arrangement can advantageously be such that buffer devices are present in the control chamber, which serve to stop the control piston in its end positions.
- an end stop for the tool feed such as the limitation of the drilling depth of a drilling tool in question, can also be implemented.
- control rod is guided with its other free end out of the device housing and applied to a damper device, which preferably acts on the control rod in both opposite directions of travel.
- the position of the other free end of the control rod, which is led out of the device housing can be monitored by means of a sensor device.
- An inductive Sensoreinrich device can be advantageously provided by means of one or more proximity switches.
- the arrangement can advantageously be such that the other free end of the control rod that is brought out is connected to a control plate on which the damper device engages, at least one of the end positions of the control plate is monitored by means of the sensor device.
- the control rod for guiding the pneumatic medium of the pneumatic motor is hollow and is permanently connected via a cross connection to an annular chamber in the device housing, which in turn is connected to a compressed air supply line in the device housing, the overall length of the annular chamber in each travel position of the control rod at least partially an overlap with the cross connection allowed.
- a drill chuck At the free end of the drive shaft, a drill chuck can be arranged, which serves to hold a drill as a cutting tool.
- the drill can grip a guide device which, guided past the outer circumference of the drill chuck, has a centering aid at its free end, which is used to attach the device to the workpiece, preferably in the form of a sheet metal or other sheet metal blank.
- the guide device can be designed as a type of drill sleeve which has a conical taper at the front exit end, through which a slight indentation is formed when the device is attached to the sheet metal part in question with a pressing force, which contributes to fixing the drilling center on the workpiece. If necessary, however, there is also no need for centering and the guide device then remains at a distance from the workpiece to be drilled and is used exclusively for guiding the boring tool during drilling.
- the invention is explained in detail below using an exemplary embodiment shown in the drawing.
- Figure 1 is a perspective oblique view of the embodiment of the device according to the invention.
- Fig. 2 shows a longitudinal section of the embodiment of the device according to the invention
- Fig. 3 is a broken off and up with a central vertical plane
- Fig. 4 is a simplified functional sketch of the embodiment.
- the exemplary embodiment of the device according to the invention shown in the drawing has a device housing, designated as a whole by 2, which has a housing main part 4 with a rectangular cross section, to which a housing attachment 6 adjoins one Stage 8 passes into a housing extension 10 having a reduced outline with a square cross section.
- a housing front part 12 is introduced, which has the same outline as the square housing extension 10, but has in its outer wall region 14 facing the extension 10 wall recesses 14, the space for fastening screws 1 6th form with which the front housing part 12 on the housing extension 10 is flanged.
- a guide device 18 follows, which is screwed by means of fastening screws 20 to the front housing part 12.
- FIGS. 2 and 3 show, the housing front part 12 and the subsequent housing extension 10 with their circular cylindrical, to the device longitudinal axis 22 concentric interior form a longitudinal guide 24 for the Mo gate housing 26 of a pneumatic motor.
- the other end of the motor housing 26, which extends within the longitudinal guide 24 to the area of the housing extension 10, is fixedly connected to a control rod 32 which, coaxial with the axis 22, extends through the housing extension 6 and the housing main part 4 and over the housing end 34 located on the right-hand side in FIGS. 2 and 3 protrudes outwards.
- the control rod 32 is part of the pneumatic feed drive unit, which is located within the housing main part 4, and at the same time forms a line section for the compressed air supply of the pneumatic motor located in the motor housing 26.
- the control rod 32 has an inner supply channel 36 which is coaxial with the axis 22 and whose left-hand end in FIGS. 2 and 3 is connected to a compressed air inlet 38 of the motor housing 26.
- a supply line 40 extending to the upper side of the housing is formed in the main housing part 4 and is supplied via a compressed air connection 42 located on the upper side of the housing.
- the inner end of the supply line 40 opens into an annular chamber 44 which, as shown in FIG. 3, the control rod 32 in an area located between the sealing elements 46 and 48 surrounds.
- the latter is connected to the annular chamber 44 via transverse bores 50.
- the axial length of the annular chamber 44 is selected so that both in the non-machining processing position shown in the figures and in the advanced machining positions, the transverse bores 50 are in overlap with the annular chamber 44 and, as a result, the pneumatic motor from the supply line also in these positions 40 forth via the channel 36 can be supplied with compressed air.
- the control rod 32 has a bell-like extension in the connection area with the motor housing 26, which forms an outflow chamber 52 for the air flow flowing back from the pneumatic motor, from which the return air flows via outflow channels (of which in 3 only one is visible) reaches silencers 58 which form the air outlet on the top of the housing.
- the feed drive unit which is also pneumatically operated and de ren feed force via the control rod 32 to the motor housing 26 is carried over, has a control chamber 60 in which a control piston 62 leads GE.
- the control chamber 60 is formed in the housing main part 4 by a coaxial to the axis 22, located in the housing main part 4 circular cylinder ge, the housing extension 6 facing open end is closed by the housing extension 6, which extends with a projecting collar 64 into the interior of the cylinder, wherein a sealing ring 66 forms the sealing device.
- Further sealing rings 70 and 72 form the seal between the control rod 32 and the housing extension 6 or between the control rod 32 and the compressed air inlet 38 on the motor housing 26, see FIG. 3.
- the control piston ben 62 rests on a step 74 for transmitting the feed force to the control rod 32 , which is located on the outer circumference of the control rod 32, a located on an external thread of the control rod 32 Mut ter 76 keeps the piston 62 with the stage 74 in contact (Fig. 3).
- a supply channel 78 running in the main housing part 4 is formed, which can be supplied by a further compressed air connection 80 located on the upper side of the housing in order to supply compressed air to a pressure chamber 82. which is formed by a reduced in inner diameter, adjoining the control chamber 60 cylinder.
- a compression spring 84 is supported, the other end of which rests against the housing extension 6 forming the end of the control chamber 60.
- the buffer devices are each formed by an annular body 86, which each abut one of the ends of the control chamber 60.
- a throttle check valve 88 is provided, which via a ventilation channel 91 (FIG. 4) with the pressure chamber 82 facing away part of the control chamber 60 is connec tion.
- the out of the end 34 of the housing main part 4 end of the control rod 32 is connected to a control plate 90 which is part of a sensor device for monitoring the axial position of the control rod 36.
- the sensor device has at least one proximity switch 92, which is fixed to a holder 94 at a defined distance from the housing end 34. 2 and 3 show the arrangement of only one proximity switch 92, while in Fig. 4 the arrangement of two proximity switch 92 is shown. Via connector 95, the respective proximity switches 92 are connected to the control electronics of the device.
- Control plate 90 With a plate part that protrudes from the control rod 32 on the opposite side of the respective proximity switches 92 forms the Control plate 90 also the holder for at least one shock absorber 96, which rests with its piston rod 98 on the main housing part 4 and has a damping effect on the control rod 32 in both directions of travel. There is also the option of providing two shock absorbers, which have a damping effect when driving out and when driving in.
- the guide device 18 When carrying out the drilling process, the guide device 18 has a centering aid in the manner of a drill sleeve 102, which is held coaxially by two retaining brackets 104 of the guide device 18, in relation to the longitudinal axis 22, at a distance in front of the drill chuck 30.
- the brackets 104 are opposite to each other at a distance from the drill chuck 30 to the sleeve 102 forward.
- the sleeve 102 is tapered by an end cone 106.
- the device is moved from the handling system in question to the workpiece to be drilled, such as a metal sheet, at a predeterminable distance.
- the drill 100 When the pneumatic motor is started by supplying compressed air via the connection 42, the drill 100 is fed by supplying compressed air to the pressure chamber 82 on the control piston 62, the feed movement taking place under monitoring by means of the sensor device.
- the control piston 62 In the movement of the control piston 62, which takes it through its contact with the stage 64 of the control rod 36 and causes the feed movement of the motor housing 26 in the longitudinal guide 24 together with the drill chuck 30, the control piston 62 moves against the restoring force of the pressure fe the 84th
- the compression spring 84 containing space of the control chamber 60 is vented via the throttle check valve 88.
- the compression spring 84 sets the pneumatic Tikmotor the control piston 62 no longer pressurized back so that the drill head 30 and motor housing 26 are moved back with the control rod 32 against the feed direction.
- the throttle check valve 88 the throttled ventilation of the compression spring 84 contain the space of the control chamber 60.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Drilling And Boring (AREA)
- Actuator (AREA)
- Feeding Of Workpieces (AREA)
- Turning (AREA)
- Earth Drilling (AREA)
- Machine Tool Units (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102018006928.2A DE102018006928A1 (de) | 2018-08-31 | 2018-08-31 | Vorrichtung zum spanenden Bearbeiten von Werkstücken |
PCT/EP2019/072749 WO2020043680A2 (de) | 2018-08-31 | 2019-08-27 | Vorrichtung zum spanenden bearbeiten von werkstücken |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3843938A2 true EP3843938A2 (de) | 2021-07-07 |
Family
ID=67777311
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19759557.2A Pending EP3843938A2 (de) | 2018-08-31 | 2019-08-27 | Vorrichtung zum spanenden bearbeiten von werkstücken |
Country Status (8)
Country | Link |
---|---|
US (1) | US20210260709A1 (ko) |
EP (1) | EP3843938A2 (ko) |
JP (1) | JP2021534992A (ko) |
KR (1) | KR20210047310A (ko) |
CN (1) | CN112638581B (ko) |
DE (1) | DE102018006928A1 (ko) |
TW (1) | TW202026090A (ko) |
WO (1) | WO2020043680A2 (ko) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11724386B2 (en) * | 2019-05-27 | 2023-08-15 | Ati Industrial Automation, Inc. | Robotic tool holder with passive compliance |
CN113244373B (zh) * | 2021-05-31 | 2022-03-08 | 中国食品药品检定研究院 | 麦胚芽凝集素在制备抑制冠状病毒的产品中的应用 |
Family Cites Families (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2857789A (en) * | 1953-01-27 | 1958-10-28 | Gardner Denver Co | Power operated tool with controlled power feed |
US2884903A (en) * | 1957-09-13 | 1959-05-05 | Westinghouse Air Brake Co | Cushioned piston assemblage for cylinders |
NL245672A (ko) * | 1958-07-31 | |||
GB975489A (en) * | 1962-06-12 | 1964-11-18 | Ingersoll Rand Co | Fluid-operated rotating and reciprocating tool |
US3318391A (en) * | 1965-03-15 | 1967-05-09 | Rockwell Mfg Co | Machine tool |
DE1602848A1 (de) * | 1967-02-10 | 1971-01-14 | Kolben Seeger Gmbh | Bearbeitungseinheit mit pneumatisch-hydraulischer Betaetigung zur Erzeugung von Vorschubbewegungen einer angetriebenen Werkzeugtraegerspindel |
SE330813B (ko) * | 1968-09-10 | 1970-11-30 | Atlas Copco Ab | |
SU770675A1 (ru) * | 1978-10-30 | 1980-10-15 | Предприятие П/Я А-7332 | Сверлильна машина с автоматической подачей |
DE2942102A1 (de) * | 1979-10-18 | 1981-04-30 | Wilhelm Henke GmbH & Co KG, 4990 Lübbecke | Bohrmaschine |
US4752161A (en) * | 1985-12-16 | 1988-06-21 | The Boeing Company | Hand-held drill with self-advancing bit |
JP3292969B2 (ja) * | 1995-08-18 | 2002-06-17 | 株式会社マキタ | ハンマードリル |
CN2451269Y (zh) * | 2000-11-29 | 2001-10-03 | 宝山钢铁股份有限公司 | 开铁口机钻冲机构 |
US7344341B2 (en) * | 2002-11-27 | 2008-03-18 | West Coast Industries, Inc. | Drill |
US7303363B2 (en) * | 2003-09-10 | 2007-12-04 | Lockheed Martin Corporation | Pneumatic drill |
US20070071562A1 (en) * | 2005-09-23 | 2007-03-29 | Spitznagel Max W | Drill motor assembly for drilling out rivets |
US20100111626A1 (en) * | 2008-10-31 | 2010-05-06 | Cooper Industries | Cushion mechanism for a positive peck feed drill |
JP5389495B2 (ja) * | 2009-03-27 | 2014-01-15 | 株式会社スギノマシン | エア駆動ドリル装置 |
DE102012001271A1 (de) * | 2012-01-25 | 2013-07-25 | Fludicon Gmbh | Positioniereinheit |
DE102013206791A1 (de) | 2013-04-16 | 2014-10-16 | Kuka Roboter Gmbh | Industrieroboter mit einer an einem Armausleger angeordneten Antriebsanordnung |
-
2018
- 2018-08-31 DE DE102018006928.2A patent/DE102018006928A1/de not_active Withdrawn
-
2019
- 2019-08-27 US US17/270,932 patent/US20210260709A1/en active Pending
- 2019-08-27 JP JP2021511615A patent/JP2021534992A/ja active Pending
- 2019-08-27 WO PCT/EP2019/072749 patent/WO2020043680A2/de unknown
- 2019-08-27 CN CN201980056482.3A patent/CN112638581B/zh active Active
- 2019-08-27 EP EP19759557.2A patent/EP3843938A2/de active Pending
- 2019-08-27 KR KR1020217006824A patent/KR20210047310A/ko not_active Application Discontinuation
- 2019-08-28 TW TW108130807A patent/TW202026090A/zh unknown
Also Published As
Publication number | Publication date |
---|---|
US20210260709A1 (en) | 2021-08-26 |
DE102018006928A1 (de) | 2020-03-05 |
JP2021534992A (ja) | 2021-12-16 |
CN112638581A (zh) | 2021-04-09 |
CN112638581B (zh) | 2023-01-10 |
TW202026090A (zh) | 2020-07-16 |
KR20210047310A (ko) | 2021-04-29 |
WO2020043680A2 (de) | 2020-03-05 |
WO2020043680A3 (de) | 2020-06-04 |
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Legal Events
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Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE |
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
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Effective date: 20210331 |
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RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: ZEITFRACHT GMBH & CO. KGAA |