EP1277541B1 - Spannelement zum positionsflexiblen Spannen von Werkstücken - Google Patents
Spannelement zum positionsflexiblen Spannen von Werkstücken Download PDFInfo
- Publication number
- EP1277541B1 EP1277541B1 EP02102026A EP02102026A EP1277541B1 EP 1277541 B1 EP1277541 B1 EP 1277541B1 EP 02102026 A EP02102026 A EP 02102026A EP 02102026 A EP02102026 A EP 02102026A EP 1277541 B1 EP1277541 B1 EP 1277541B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- clamping
- chuck
- housing
- piston
- element according
- 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.)
- Expired - Lifetime
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B5/00—Clamps
- B25B5/06—Arrangements for positively actuating jaws
- B25B5/12—Arrangements for positively actuating jaws using toggle links
- B25B5/122—Arrangements for positively actuating jaws using toggle links with fluid drive
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B5/00—Clamps
- B25B5/006—Supporting devices for clamps
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B5/00—Clamps
- B25B5/06—Arrangements for positively actuating jaws
- B25B5/061—Arrangements for positively actuating jaws with fluid drive
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B5/00—Clamps
- B25B5/06—Arrangements for positively actuating jaws
- B25B5/061—Arrangements for positively actuating jaws with fluid drive
- B25B5/064—Arrangements for positively actuating jaws with fluid drive with clamping means pivoting around an axis perpendicular to the pressing direction
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B5/00—Clamps
- B25B5/16—Details, e.g. jaws, jaw attachments
Definitions
- the invention relates to a clamping element for positionally flexible clamping of workpieces with hydraulically actuated clamping jaws which are attached to the workpiece approachable and fixable and the tensioning element to a floating Make element.
- Clamping elements are used for clamping workpieces to the Firmly fix workpiece against all machining forces. Here it is required to pick up the workpiece positioned and in this position clamp and furthermore support it everywhere with clamping elements where due to the Machining forces distortions or deformations of the workpiece done can.
- These clamping elements which help to tighten the clamping process are preferably used, must be designed so that they are applied to the the workpiece does not generate any transverse forces that a predetermined position of the Workpiece influence.
- clamping elements are usually actuated hydraulically to the workpiece moved up.
- This approach requires a balance between the opposite clamping jaws, so that they with equal force on the workpiece come to the concern.
- the hydraulic system via only one pressure line Drive members and the jaws fed equally, so that the Force distribution between the jaws takes place via the hydraulic system.
- the Clamping jaws that first touches the workpiece remains due to the workpiece outgoing resistance while the other clamping jaws continue, until it also rests against the workpiece. Now builds up between two jaws evenly applied pressure on the workpiece. Act on the Workpiece forces greater than those generated solely by the hydraulics Holding forces are, it comes to deformations of the workpiece and to Impairment of the machining process.
- the known clamping elements are due to their design with considerable Frictional forces loaded. This is partly due to seals in the Hydraulic area are required and the cylindrical parts against each other seal as they move together. Large dimensions lead to large masses of moving parts and thus also to inertial forces, by the Deformations on the workpiece do not fail, resulting in manufacturing inaccuracies leads. In addition, the clamping range of such elements is not all Customizable applications, resulting in elements of different sizes Processing of different workpieces are required.
- the clamping element a large clamping range assign, the different workpieces is adaptable and the forces in so initiate the tensioning operation so that they cause the workpiece to settle, without affecting this in its positioned position and that in the workpiece initiated holding forces during the machining process regardless of to maintain external influences.
- Fig. 1 the element is shown in section.
- the stationary housing 1 is a Clamping insert 2 guided.
- This clamping insert 2 has a rectangular cross-section and is inserted into the housing so that it protrudes from the housing on one side. Accordingly, the housing 1 is provided on one side with a recess. To guide the clamping insert 2, this is on the side of the housing opening with provided oblique guide surfaces 4 and the housing 1 with inward directed bevels 5.
- the clamping insert 2 in the housing 1 on the sides and sliding contact surfaces.
- the piston 3 In clamping insert 2, the piston 3 is guided.
- the piston 3 has at its head a Dome 6, in which a ball 7 is mounted as part of a connecting rod 8.
- To the connecting rod 8 includes a second ball 9, which in a cap 10 of a clamping lever 11th is introduced.
- the tensioning lever 11 has a pivot 12, located in the upper part of the clamping insert 2 is located.
- the piston 3 has two pressure chambers, of which the pressure chamber 13 for clamping and the pressure chamber 14 for relaxing serve. The pressure chambers are connected via two flexible pressure lines over the Terminals 15 and 16 fed.
- the clamping insert 2 is at its lying in the housing recess side with a plurality of position holes 17 provided along the side surface in this are admitted.
- position pins 18 can be used.
- the position holes are introduced at a predetermined distance, which is results from the use cases.
- the position holes serve to the Maximalhub 19 of the clamping system to reduce and the respective adapted workpiece.
- These jaws are provided with corresponding fitting holes, in each case a positioning pin fits, so that the clamping jaws 20, 21 in the position holes 17 arbitrarily insertable and by means of threaded bolts in appropriate Tapped holes 23 can be fixed.
- Clamping piston 24 is provided in the housing 1 in a cylinder bore.
- This clamping piston 24 is designed so that it is in applied state on the outer wall of the clamping insert 2 presses.
- the Clamping piston 24 is controlled separately, but it can also by means of a Sequence control depending on the completed clamping state to be actuated.
- the piston 3 In the rest position, the piston 3 is moved down and the clamping insert 2 in his lowest position. Depending on the workpiece thickness of the clamping jaws 20 in the corresponding position holes brought and by means of the fine adjustment screw 22 adjusted to the workpiece. Only for large workpieces, the maximum stroke Claim 19 and can hang up directly on the jaws 21, deleted the clamping jaws 20.
- the lever arm 11 is upwards in the vertical position pivoted and thus gives the space for the insertion of the workpiece 25 free.
- the Clamping initiated.
- the pressure chamber 13 is pressurized the Piston 3 moves upward and moves the clamping lever 11 in the pivot 12 on the Workpiece 25 too.
- the connecting rod 8 with its balls 7, 9 ensures the balance of Movement sequence. This process continues until the tension lever 11 with his Pressure surface 26 rests on the workpiece 25. Now the workpiece offers the Clamping lever as a result of the resistance occurring stops in its movement. This clamping process goes without significant friction in the contact surfaces vonstatten. This means that the clamping lever 11 at its contact surface 26 also no significant force is introduced into the workpiece 25. The continue however, the upcoming hydraulic pressure moves the piston further upwards.
- the clamping process acts optimally when the center of rotation and center of the ball 7 with the center of the pivot joint 12 and the contact point of the pressure surface 26th lying on a straight line.
- the vertical stroke of the clamping insert can by appropriate measures, such as Longitudinal groove and screw are limited.
- the tensioning element is as positionflexibles element and thus as a floating Element can be used.
- a floating element suits it already preloaded workpiece and supports this at the points where Machining forces can act, for tension or even deformation contribute to the workpiece.
- Figs. 5-7 show another element.
- a clamping insert 30 is guided with a circular cross-section.
- the piston 3 is introduced, which carries the connecting rod 8 with the balls 7: 9 and the clamping lever 11 at the head end via dome 6.
- the clamping insert 30 has at the head end, the rotary joint 12 for the clamping lever 11 and a fixed cantilever jaw 31.
- the workpiece 25 is inserted between the clamping jaw 31 and the clamping lever 11.
- a clamping piston 32 which is, however, provided with a prismatic Anstell Design, the circular cross section of the clamping insert is adjusted.
- the clamping piston 32 is controlled via its own pressure channel 47. In the tensioned state pushes the clamping piston the clamping insert against the housing inner bore and sets this with it.
- the clamping insert is once by a virtually smooth guidance in the housing made smooth, the dirt wiper 33 no impairment represent, since they are just on the clamping insert to concern.
- To the other two pipe springs 34, 35 are provided, which serve as feeders for the Serve hydraulics.
- the two coil springs 34, 35 fit smoothly into the System by length depending on the direction of movement of the clamping insert or compress without generating a significant restoring force.
- the introduction of the tube springs 34, 35 requires exact connections in terms of Hydraulic transitions.
- the tube spring 34 is used for clamping and the tube spring 35th to relax the system.
- For clamping the pressure chamber 13 is acted upon.
- the hydraulic at the terminal 36 via the nipple 37 in the tube spring 34th passed and added via nipple 38 and channel 39 into the pressure chamber 13.
- the Piston 3 moves up and puts the clamping lever 11 on the workpiece 25. Der Resistance to the workpiece 25 is sufficient to now the clamping insert 30 together with the piston 3 to go up until the jaw31 under the Workpiece 25 comes to rest. Now the pressure builds up on levers 11 and Jaws 31 equal to, whereby the clamping insert a firm connection received with the workpiece.
- the clamping piston 32 is acted upon, the presses the clamping insert 30 against the housing and in this position in the Clamp housing 29.
- Bourdon tube 35 To release 41 pressure in the Bourdon tube 35 is given via port 40 and nipple and from here the hydraulics via nipple 42 and channel 43 into the piston chamber 44th directed.
- the clamping piston 32 by relieving the hydraulic pressure at 47 moved back by means of its diaphragm spring and the pressure chamber 13 without pressure been made.
- the bourdon tubes are made of nipples and tabs Screwed.
- the tube spring 35 is with her nipple 38 by means Brazing connected.
- a pocket 45 is provided in which engages a movable roller 46.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jigs For Machine Tools (AREA)
- Laser Beam Processing (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
Description
- Fig. 1
- zeigt ein Element im Längsschnitt
- Fig. 2
- zeigt einen Querschnitt
- Fig. 3
- zeigt eine Seitenansicht
- Fig. 4
- zeigt eine Seitenansicht
- Fig. 5
- zeigt ein Spannelement mit Rohrfedersystem
- Fig. 6
- zeigt eine Seitenansicht
- Fig. 7
- zeigt einen Querschnitt
In dem Gehäuse 29 ist ein Spanneinsatz 30 mit kreisförmigen Querschnitt geführt. Im Innern des Spanneinsatzes 30 ist der Kolben 3 eingebracht, der am Kopfende über Kalotte 6 das Pleuel 8 mit den Kugeln 7:9 und den Spannhebel 11 trägt. Der Spanneinsatz 30 hat am Kopfende das Drehgelenk 12 für den Spannhebel 11 und einen feststehenden auskragenden Spannbacken 31. Das Werkstück 25 ist zwischen dem Spannbacken 31 und dem Spannhebel 11 einlegbar.
1 | Gehäuse | 31 | Spannbacken |
2 | Spanneinsatz | 32 | Klemmkolben |
3 | Kolben | 33 | Schmutzabstreifer |
4 | Führungsfläche | 34 | Rohrfeder |
5 | Schräge | 35 | Rohrfeder |
6 | Kalotte | 36 | Hydraulikanschluss |
7 | Kugel | 37 | Nippel |
8 | Pleuel | 38 | Nippel |
9 | Kugel | 39 | Kanal |
10 | Kalotte | 40 | Anschluss |
11 | Spannhebel | 41 | Nippel |
12 | Drehgelenk | 42 | Nippel |
13 | Druckkammer | 43 | Kanal |
14 | Druckkammer | 44 | Kolbenraum |
15 | Druckanschluss | 45 | Tasche |
16 | Druckanschluss | 46 | Rolle |
17 | Positionsbohrung | 47 | Druckanschluss |
18 | Positionsstift | ||
19 | Maximalhub | ||
20 | Spannbacken | ||
21 | Spannbacken | ||
22 | Feineinstellschraube | ||
23 | Gewindebohrung | ||
24 | Klemmkolben | ||
25 | Werkstück | ||
26 | Andruckfläche | ||
27 | Andruckfläche | ||
28 | Feder | ||
29 | Gehäuse | ||
30 | Spanneinsatz |
Claims (9)
- Spannelement zum positionsflexiblen Spannen von Werkstücken (25) mit hydraulisch betätigten Spannbacken (20, 31), die an das Werkstück (25) heranfahrbar und festsetzbar sind, dadurch gekennzeichnet, dass in einem Gehäuse (1;29) ein Spanneinsatz (2;30) mit innen liegendem Kolben (3) gleitend geführt ist, dass der Spanneinsatz (2;30) mit einem Spannbacken (20;31) versehen ist und über ein Drehgelenk (12) einen Spannhebel (11) aufnimmt, dass der Spannhebel (11) über ein Pleuel (8) gelenkig mit dem Kolben (3) verbunden ist und dass beim Spannvorgang der Kolben (3) den Spannhebel (11) auf das Werkstück (25) drückt und durch den vom Werkstück auf den Spannhebel wirkenden Widerstand den Spanneinsatz (2;30) anhebt und so den Spannbacken (20;31) unter das Werkstück fährt und durch den Kraftaufbau zwischen Spannhebel und Spannbacken das Werkstück mit dem Spanneinsatz eine feste Verbindung eingeht.
- Spannelement nach Anspruch 1, dadurch gekennzeichnet, dass das Gehäuse (1) an einer Seite eine Aussparung besitzt, dass der Spanneinsatz (2) in dieser Aussparung über im Gehäuse eingebrachte Schrägen (5) und über am Spanneinsatz angebrachte Führungsflächen (4) gleitend geführt ist und dass der Spanneinsatz (2) an seiner in der Aussparung liegenden Seite mit mehreren Positionsbohrungen (17) versehen ist, in denen positioniert die Spannbacken (20;21) aufnehmbar sind.
- Spannelement nach den Ansprüchen 1 u. 2, dadurch gekennzeichnet, dass der Spannbacken (20) mit einer Feineinstellschraube (22) bestückt ist.
- Spannelement nach den Ansprüchen 1 u. 2, dadurch gekennzeichnet, dass senkrecht zum Spanneinsatz (2) ein Klemmkolben (24) im Gehäuse (1) in einer Zylinderbohrung geführt ist, dass der Klemmkolben (24) im beaufschlagtem Zustand gegen den Spanneinsatz fährt und diesen mit seinen Führungsflächen (4) in die Schrägen (5) des Gehäuses drückt und festklemmt.
- Spannelement nach den Ansprüchen 1 bis 4, dadurch gekennzeichnet, dass die Zuleitungen der Hydraulik zu den Anschlüssen (15;16) im Spanneinsatz flexibel sind.
- Spannelement nach Anspruch 1, dadurch gekennzeichnet, dass in dem Spanneinsatz (2; 30) eine Feder (28) eingesetzt ist, die sich am Boden des Gehäuses (1; 29) abstützt, durch deren Federkraft das Gewicht des Spanneinsatzes ausgeglichen ist.
- Spannelement nach Anspruch 1, dadurch gekennzeichnet, dass der Spanneinsatz (30) zylindrisch ausgeführt und in einem Gehäuse (29) gleitend geführt ist, dass im Spanneinsatz (30) ein Kolben (3), mit einem Pleuel (8) und einem Spannhebel (11) am Kopf versehen, gelagert Ist und dass senkrecht zum Spanneinsatz (30) ein Klemmkolben (32) angeordnet ist, dessen Druckfläche prismatisch ausgebildet dem Querschnitt des Spanneinsatzes angepasst ist und der im beaufschlagtem Zustand den Spanneinsatz (30) in die Wandung der Zylinderbohrung im Gehäuse (29) drückt.
- Spannelement nach den Ansprüchen 1 u. 6, dadurch gekennzeichnet, dass im Gehäuse (29) unterhalb des geführten Spanneinsatzes (30) Rohrfedern (34; 35) angeordnet sind, die eine flexible Verbindung für die Hydraulik zwischen den äußeren Anschlüssen am Gehäuse und den Druckkammern (13 u. 14) im Zylinderraum des Spanneinsatzes für die Betätigung des Kolben (3) herstellen.
- Spannelement nach Anspruch 7, dadurch gekennzeichnet, dass die Rohrfedern mittels Nippel und Laschen an den Enden mit den zugehörigen Anschlüssen und Kanälen verbunden sind.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10135280A DE10135280A1 (de) | 2001-07-19 | 2001-07-19 | Spannelement zum positionsflexiblen Spannen von Werkstücken |
DE10135280 | 2001-07-19 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1277541A1 EP1277541A1 (de) | 2003-01-22 |
EP1277541B1 true EP1277541B1 (de) | 2003-11-12 |
EP1277541B8 EP1277541B8 (de) | 2004-11-10 |
Family
ID=7692420
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02102026A Expired - Lifetime EP1277541B8 (de) | 2001-07-19 | 2002-07-11 | Spannelement zum positionsflexiblen Spannen von Werkstücken |
Country Status (4)
Country | Link |
---|---|
US (1) | US6719281B2 (de) |
EP (1) | EP1277541B8 (de) |
AT (1) | ATE254008T1 (de) |
DE (2) | DE10135280A1 (de) |
Families Citing this family (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4311616B2 (ja) * | 2003-01-24 | 2009-08-12 | 株式会社コスメック | バネロック式クランプ装置 |
US7815176B2 (en) | 2003-09-11 | 2010-10-19 | Phd, Inc. | Lock mechanism for pin clamp assembly |
US7182326B2 (en) * | 2004-04-02 | 2007-02-27 | Phd, Inc. | Pin clamp |
US7516948B2 (en) * | 2004-04-02 | 2009-04-14 | Phd, Inc. | Pin clamp accessories |
DE102004053925A1 (de) * | 2004-11-05 | 2006-05-11 | Ludwig Ehrhardt Gmbh | Spannvorrichtung zum Spannen von Gegenständen |
US7448607B2 (en) * | 2004-12-15 | 2008-11-11 | Phd, Inc. | Pin clamp assembly |
US20070267795A1 (en) * | 2006-02-06 | 2007-11-22 | Parag Patwardhan | Pin clamp transfer assembly and method of transferring a workpiece |
EP2138266A4 (de) * | 2007-03-15 | 2012-05-16 | Kosmek Ltd | Kniehebelklemmvorrichtung |
ES2707249T3 (es) | 2007-06-19 | 2019-04-03 | Phd Inc | Conjunto de abrazadera de pasador |
MX2010014266A (es) * | 2008-06-18 | 2011-03-29 | Phd Inc Star | Sujetador con perno de extraccion. |
US8656568B2 (en) * | 2010-04-30 | 2014-02-25 | Smw Automotive Corporation | Apparatus for final finishing a wheel hub of a knuckle assembly and related method |
US8746664B2 (en) | 2011-04-22 | 2014-06-10 | Delaware Capital Formation, Inc. | Spring actuated link clamp |
US10607742B2 (en) * | 2011-05-09 | 2020-03-31 | National Institute Of Aerospace Associates | Radiation shielding materials containing hydrogen, boron and nitrogen |
DE102014101924B3 (de) * | 2014-02-17 | 2015-01-29 | ALU4YOU GmbH | Vorrichtung zum stellungsvariablen Einspannen eines Werkstücks |
EP2921260B1 (de) * | 2014-03-20 | 2016-08-31 | UNIVER S.p.A. | Pneumatisch betreibbares Arbeitsgerät |
CN104384985B (zh) * | 2014-10-22 | 2016-06-29 | 湖南凯斯机械股份有限公司 | 一种快速夹紧的夹具 |
CN104440276B (zh) * | 2014-12-09 | 2017-11-24 | 江苏诚一阀门有限公司 | 阀芯铣削用固定装置 |
DE102019121860A1 (de) * | 2019-08-14 | 2021-02-18 | Destaco Europe Gmbh | Spannvorrichtung |
US11759914B2 (en) | 2020-08-06 | 2023-09-19 | Mate Precision Technologies Inc. | Vise assembly |
WO2022032148A1 (en) | 2020-08-06 | 2022-02-10 | Mate Precision Technologies Inc. | Tooling base assembly |
JP7380641B2 (ja) * | 2021-04-26 | 2023-11-15 | 積水ハウス株式会社 | 位置決め治具および組立テーブル |
CN114083315B (zh) * | 2021-12-06 | 2023-02-03 | 北轴(洛阳)科技有限公司 | 一种轴承加工用工装夹具 |
CN114633138B (zh) * | 2022-03-04 | 2023-06-02 | 浙江开创电气股份有限公司 | 电圆锯箱体车削工装 |
CN117444619B (zh) * | 2023-12-22 | 2024-04-12 | 中铁山桥集团有限公司 | 一种热轧u形肋一体化加工设备 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3528337A1 (de) * | 1985-08-07 | 1987-02-19 | Eugen Rapp | Spannvorrichtung |
US4673173A (en) * | 1986-01-31 | 1987-06-16 | Kabushiki Kaisha Nippei Toyama | Workpiece clamping device |
DE8621050U1 (de) * | 1986-08-06 | 1986-09-18 | Joh. Vaillant Gmbh U. Co, 5630 Remscheid | Spannvorrichtung für ein Werkstück an einer Werkzeugmaschine |
DE4307058A1 (de) * | 1993-03-06 | 1994-09-08 | David Fischer | Spannvorrichtung zum Spannen von Werkstücken auf Maschinentischen oder Paletten |
DE19930990C1 (de) * | 1999-07-05 | 2000-12-28 | Tuenkers Maschinenbau Gmbh | Kraftangetriebene Kniehebelspannvorrichtung, insbesondere zur Verwendung im Karosseriebau der Kfz-Industrie |
-
2001
- 2001-07-19 DE DE10135280A patent/DE10135280A1/de not_active Withdrawn
-
2002
- 2002-07-11 AT AT02102026T patent/ATE254008T1/de active
- 2002-07-11 DE DE50200104T patent/DE50200104D1/de not_active Expired - Lifetime
- 2002-07-11 EP EP02102026A patent/EP1277541B8/de not_active Expired - Lifetime
- 2002-07-16 US US10/196,675 patent/US6719281B2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
US20030015832A1 (en) | 2003-01-23 |
EP1277541A1 (de) | 2003-01-22 |
DE10135280A1 (de) | 2003-02-06 |
EP1277541B8 (de) | 2004-11-10 |
ATE254008T1 (de) | 2003-11-15 |
US6719281B2 (en) | 2004-04-13 |
DE50200104D1 (de) | 2003-12-18 |
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