EP3980228A1 - Werkzeugwechsler für einen roboter und wechselsystem hierfür - Google Patents
Werkzeugwechsler für einen roboter und wechselsystem hierfürInfo
- Publication number
- EP3980228A1 EP3980228A1 EP20746120.3A EP20746120A EP3980228A1 EP 3980228 A1 EP3980228 A1 EP 3980228A1 EP 20746120 A EP20746120 A EP 20746120A EP 3980228 A1 EP3980228 A1 EP 3980228A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- tool changer
- base unit
- locking elements
- axial direction
- tool
- 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.)
- Withdrawn
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25J—MANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES
- B25J15/00—Gripping heads and other end effectors
- B25J15/04—Gripping heads and other end effectors with provision for the remote detachment or exchange of the head or parts thereof
- B25J15/0408—Connections means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25J—MANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES
- B25J15/00—Gripping heads and other end effectors
- B25J15/04—Gripping heads and other end effectors with provision for the remote detachment or exchange of the head or parts thereof
- B25J15/0408—Connections means
- B25J15/0433—Connections means having gripping members
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25J—MANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES
- B25J15/00—Gripping heads and other end effectors
- B25J15/04—Gripping heads and other end effectors with provision for the remote detachment or exchange of the head or parts thereof
- B25J15/0408—Connections means
- B25J15/045—Connections means having screw means
Definitions
- the invention relates to a tool changer for a robot, with a base unit and with one on the
- Locking elements and with receptacles provided on the interchangeable unit the locking elements interacting with the receptacles in a locking position for locking the interchangeable unit on the base unit and releasing the receptacles in an unlocking position, and with a rotary member provided on the base unit and rotatably mounted about its longitudinal axis, wherein the
- Locking elements with the rotary link so are coupled in movement that the locking elements are displaced when the rotary member is rotated.
- the base unit is in particular set up so that it can be arranged on the free end of a robot arm.
- the exchange unit is in particular like this
- Robots are used in industrial assembly line applications and other production applications to perform repetitive tasks with high accuracy.
- robots are commonly used in the
- Automotive industry used to perform a number of tasks such as material handling,
- a tool changer mentioned at the beginning is known, for example, from DE 112009002163 T5. There they are
- Locking elements designed as rolling elements.
- Actuation of the locking elements is known there as a rotary member, a piston with cam surfaces with several facets, which act against the rolling elements.
- the present invention is based on the object of providing a tool changer of the type mentioned at the beginning
- the tool changer provides, in particular, that the rotary member is coupled in terms of movement to a rotationally fixed and axially displaceable actuator so that when the rotary member is rotated, the actuator changes its position in the axial direction.
- the rotary member as such can also change its axial position; however, it is also conceivable that the rotary member and the actuator are coupled to one another for movement in such a way that the rotary member does not change its axial position when it is rotated.
- the actuator is coupled in motion with a pivot pin which extends transversely to the longitudinal axis of the actuator or forms this, that a joint pin is provided on each of the locking elements and that at least one lever arm is provided between the pivot pin and the respective joint pin .
- the respective lever arms are set up in such a way that when the pivot pin is displaced in the axial direction, the hinge pins, and thus the locking elements, are moved in a transverse direction running transversely to the axial direction.
- a plurality of lever arms can also be provided in each case for the pivot pin and the respective hinge pin.
- Actuator are advantageously deflected in the axial direction in a movement of the locking elements in the transverse direction. Overall, the movement of the pivot pin and the
- Hinge pins are also made relatively wear-free.
- hinge pin and the pivot pin are circular-cylindrical and are arranged to run parallel to one another.
- motion-coupled components are exposed to high loads and high wear.
- the rotary member comprises a head and a threaded rod, the head being rotatable by means of a rotary tool and the threaded rod in a non-rotatably arranged on the base unit
- Threaded sleeve is rotatably mounted.
- the threaded rod and the threaded sleeve can interact directly; the thread of the threaded rod then engages in a thread of the threaded sleeve.
- rolling bodies are provided between the threaded rod and the threaded sleeve in order to minimize the friction between the threaded rod and the threaded sleeve.
- the turning tool can be a hand-operated turning tool or a
- the provision of a machine-operated turning tool has the advantage that the turning member can be operated automatically.
- the actuator is advantageously provided on the side of the rotary member facing away from the head in an axially decoupled manner on the rotary member.
- the rotational decoupling can be implemented, for example, in such a way that the
- Actuator reaches through a coupling section of the rotary member and undercuts.
- the securing element is set up so that it is when the
- the turning tool moves from a secured position into a release position.
- the securing element can, for example, be a securing wedge which is spring-loaded in the axial direction and which rests against a flattened area of the head and thereby prevents the rotating member from rotating.
- this securing wedge can be displaced backwards in the axial direction from the securing position into the release position, whereby a turning of the turning member becomes possible.
- the two lever arms are furthermore preferably arranged at least in sections one above the other and / or lying next to one another. This results in a space-saving arrangement.
- the locking elements are designed as slide elements and are supported in the base unit.
- the slide elements are included in particular stored so that they can only move in the direction of rotation. This allows a clear direction of movement of the slide elements to be specified.
- the slide elements can in particular provide wedge sections on the side facing the respective receptacle.
- the recordings can in particular as
- the receptacles are at least partially elastically resilient and / or at least partially elastic on the interchangeable unit
- Locking elements act in the locked position under a bias against the recordings.
- the provision of such a bias has the advantage that
- connection axes between the respective hinge pin and the pivot pin enclose an angle ⁇ in the range of over 86 ° and under 90 ° with the axial direction. This ensures that in particular in the
- Axial stop is provided for setting the end position of the actuator in the axial direction.
- the end position can also be adjusted to the angle ß. This can ensure that the
- positioning recesses or positioning pins are provided on the interchangeable unit, with which the interchangeable unit can be precisely positioned at an interchangeable station
- the exchange unit is positionable. It can thereby be ensured that the exchange unit can be stored at an exchange station, especially when it is detached from the base unit.
- a changing system with a tool changer according to the invention and with a changing station, the changing station having a rotary tool for rotating the rotary member and the changing station having positioning pins or
- FIG. 1 shows a changing system with a tool changer and with a changing station
- FIG. 2 shows the tool changer according to FIG. 1;
- FIG 3 shows the exchange system according to Figure 2, with unlocked
- FIG. 4 shows a section of the changing system according to FIG. 1 when the tool changer is approached
- FIG. 5 shows the view according to FIG. 4 with at the
- FIG. 6 shows a longitudinal section through the changing system according to FIG. 3;
- FIG. 7 shows a cross section through the changing system according to FIG. 8;
- FIG. 8 shows a cross section corresponding to FIG. 7 in the locked position;
- FIG. 9 shows a detail of a plan view of the
- FIG. 10 shows the locking elements of the base unit with the associated movement mechanism in FIG
- FIG. 11 shows a view corresponding to FIG. 10 in the locked position.
- a tool changer 10 which comprises a base unit 12 and an exchange unit 14. Furthermore, in particular in Figures 1 to 5 a
- Changing station 16 is shown, to which the tool changer 10 can be docked in order to detach the changing unit 14 from the base unit 12.
- the tool changer 10 and the changing station together form a changing system 18.
- the base unit 12 can be arranged on the free end of a robot arm. Using the robot arm, which is not shown in the figures, the base unit 12 can be moved freely in space and, among other things, can also be moved to the changing station 16. In operation, a tool or a handling system, such as a gripping device, is arranged on the interchangeable unit 14 in order to access components
- the exchange unit 14 can be detached from the base unit 12.
- the changing station 16 there are three at the changing station 16
- Positioning pins 20 are provided, which are in on the
- Base unit 12 a rotary member 24 is provided, which is rotatably mounted about its longitudinal axis 25.
- FIGS. 4 and 5 the housing of the base unit 12 is only shown in broken lines in order to make the components within the base unit 12 visible.
- the rotary member 24 comprises a head 26 and a
- Threaded rod 28 The head 26 has contact surfaces in the form of on two opposite sides
- Flats 30 for a rotatably drivable turning tool 32 As is clear from FIGS. 1 to 5 in particular, the turning tool 32 is configured like a fork and is arranged at the changing station 16 so that it can be rotated. The turning tool 32 has contact surfaces 34 which are formed parallel to the flats 30. In the docked position of the turning tool 32
- the contact surfaces 34 of the turning tool 32 therefore rest on the flats 30 of the head 26, as is clear from FIGS. 2 and 5.
- a securing element 36 is also provided on the base unit 12, which interacts with one of the flattened areas 30 to secure the rotary member 24 against rotation.
- Fuse element 36 is in. With spring elements 38
- Changing station 16 docked tool changer 10 is not possible. If the tool changer 10 is located at the changing station 16, as shown in FIG. 5, the turning tool 32 interacts with the securing element 36 in such a way that when the turning tool 32 is rotated from the securing position shown in FIG 5 shown release position moves. In order to achieve a safe disengagement against the pretensioning force of the spring elements 38, the mutually facing sides of the securing element 36 and of the turning tool 32 are each wedge-shaped.
- the threaded rod 28 of the rotary member 24 is rotatably mounted in a threaded sleeve 40. In order to rotate the rotary member 24 as smoothly as possible in the
- the threaded rod 28 acts directly against the threaded sleeve 40. Due to the provision of the threaded sleeve 40 it is achieved that when the rotary member 24 is rotated about its longitudinal axis 25, the rotary member 24 is in its position
- Axial direction i.e. in the direction along the longitudinal axis 25, changed.
- the axial direction is indicated by the double arrow 41.
- the rotary member 24 is coupled in terms of movement in the axial direction 41 to a non-rotatable and axially displaceable actuator 42.
- the actuator 42 adjoins the rotary member 24 on the side of the rotary member facing away from the head 26 in an uncoupled manner in the axial direction 41.
- Axial direction 41 leads without the actuator 42 being rotated about the longitudinal axis 25.
- the actuator 42 has a direction transverse to the longitudinal axis 25
- pivot pin 50 consequently extends transversely to the longitudinal axis 25 or transversely to the axial direction 41.
- pivot pin 50 extends not only through the bore 48 of the pivot pin 50
- Actuator 42 but through two further bores 52, which are each provided on a lever arm 54, 56.
- Keyways 84 provided for web portions 82 are formed.
- the locking elements 60, 62 interacting with the receptacles 80 are provided on the base unit 12 and each have a wedge section 86 at their free ends, which is designed to be complementary to the keyways 84.
- Wedge sections 86 can be clearly seen in particular in FIGS. 9 and 10.
- Transverse axis 64 running longitudinal axis 25 in a transverse direction indicated by arrows 68.
- the actuator 42 is displaced in the direction of the arrow 66 along the longitudinal axis 25 in the axial direction 41, then due to the mechanics of the lever arms 54, 56 are
- Locking elements 60, 62 displaced along transverse axis 64 in transverse direction 68.
- Locking elements 60, 62 close the
- Connection axes 70 which run between the centers of the hinge pins 58 and the center of the pivot pin 50, with the longitudinal axis 25 each make an angle of 45 ° a.
- the axes 70 enclose an angle ⁇ of approximately 88 ° with the longitudinal axis 25. This means that, starting from FIG. 10, the locking elements 60, 62 are initially displaced comparatively quickly in the direction of the arrows 68 with comparatively little force.
- the movement of the locking elements 60, 62 is slowed down due to the kinematics provided, although the locking force is increased accordingly.
- the angle ß is chosen so that it is less than 90 °; if the angle would be ß 90 °, a dead center would be
- the axial stop 72 is designed here as a threaded bolt that is inserted into the
- Housing of the base unit 12, as shown in Figure 9, can be screwed.
- Web sections 82 can be provided on the interchangeable unit 14 such that they can be deflected by means of spring elements. If, as shown in FIG. 8, the locking elements 60, 62 are acted upon in the locking position along the arrows 68 against the receptacles 80, these are deflected into the deflection position 82 'shown in broken lines in FIG. This has the
- the deflection of the web sections 82 or the receptacles 80 is greater than that which occurs
Landscapes
- Engineering & Computer Science (AREA)
- Robotics (AREA)
- Mechanical Engineering (AREA)
- Automatic Tool Replacement In Machine Tools (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102019119657.4A DE102019119657B4 (de) | 2019-07-19 | 2019-07-19 | Werkzeugwechsler für einen Roboter und Wechselsystem hierfür |
PCT/EP2020/070214 WO2021013709A1 (de) | 2019-07-19 | 2020-07-16 | Werkzeugwechsler für einen roboter und wechselsystem hierfür |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3980228A1 true EP3980228A1 (de) | 2022-04-13 |
Family
ID=71786902
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20746120.3A Withdrawn EP3980228A1 (de) | 2019-07-19 | 2020-07-16 | Werkzeugwechsler für einen roboter und wechselsystem hierfür |
Country Status (5)
Country | Link |
---|---|
US (1) | US20220234218A1 (de) |
EP (1) | EP3980228A1 (de) |
CN (1) | CN114126812B (de) |
DE (1) | DE102019119657B4 (de) |
WO (1) | WO2021013709A1 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102021118208A1 (de) * | 2021-07-14 | 2023-01-19 | Grip Gmbh Handhabungstechnik | Wechselvorrichtung, Wechselvorrichtungssystem und Verfahren zum Wechseln von nacheinander an einem Roboterarm zu nutzenden Werkzeugen |
TWI790025B (zh) * | 2021-12-06 | 2023-01-11 | 直得科技股份有限公司 | 機器手臂末端軸機械式自動換刀機構及方法 |
CN115570559B (zh) * | 2022-11-10 | 2023-03-14 | 广州里工实业有限公司 | 一种机械臂快换装置、操作方法及机器人 |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3346467A1 (de) * | 1983-12-22 | 1985-07-04 | GTE Valeron Corp. (eine Gesellschaft n.d.Ges.d. Staates Delaware), Troy, Mich. | Werkzeugmaschine mit werkzeugwechselvorrichtung |
GB2202572B (en) * | 1986-12-01 | 1990-09-19 | British Aerospace | Retaining device |
DE3713619A1 (de) * | 1987-04-23 | 1988-11-17 | Remak Reinheimer Maschinenbau | Greiferwechselkupplung fuer handhabungsgeraete |
DE4010070C1 (en) * | 1990-03-29 | 1991-11-28 | Pitsch, Franz, 5226 Reichshof, De | Tool changing device for welding robot - incorporates detachable joint between transformer and welding head |
JPH0748384Y2 (ja) * | 1990-07-11 | 1995-11-08 | 株式会社安川電機 | ロボット用工具交換装置 |
US5360249A (en) * | 1991-09-13 | 1994-11-01 | Refac Technology Development, Corporation | Multifunctional end effectors |
US9724830B2 (en) * | 2008-09-05 | 2017-08-08 | Ati Industrial Automation, Inc. | Manual robotic tool changer with rolling members |
ES2423918T3 (es) * | 2011-07-01 | 2013-09-25 | Smw-Autoblok Spannsysteme Gmbh | Luneta |
CN203610997U (zh) * | 2013-12-12 | 2014-05-28 | 长春一汽天奇泽众汽车装备工程有限公司 | 加工中心夹具中可调整角向定位装置 |
DE102016109195A1 (de) * | 2016-05-19 | 2017-11-23 | Schunk Gmbh & Co. Kg Spann- Und Greiftechnik | Spanneinheit, insbesondere Nullpunktspanneinheit |
KR101917321B1 (ko) * | 2017-04-28 | 2019-01-29 | 재단법인대구경북과학기술원 | 로봇용 수동 툴 체인저 |
-
2019
- 2019-07-19 DE DE102019119657.4A patent/DE102019119657B4/de active Active
-
2020
- 2020-07-16 WO PCT/EP2020/070214 patent/WO2021013709A1/de unknown
- 2020-07-16 CN CN202080052102.1A patent/CN114126812B/zh active Active
- 2020-07-16 US US17/628,416 patent/US20220234218A1/en active Pending
- 2020-07-16 EP EP20746120.3A patent/EP3980228A1/de not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
CN114126812A (zh) | 2022-03-01 |
DE102019119657B4 (de) | 2021-03-04 |
CN114126812B (zh) | 2023-03-28 |
US20220234218A1 (en) | 2022-07-28 |
DE102019119657A1 (de) | 2021-01-21 |
WO2021013709A1 (de) | 2021-01-28 |
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