EP1281480A1 - Spannvorrichtung - Google Patents
Spannvorrichtung Download PDFInfo
- Publication number
- EP1281480A1 EP1281480A1 EP02354117A EP02354117A EP1281480A1 EP 1281480 A1 EP1281480 A1 EP 1281480A1 EP 02354117 A EP02354117 A EP 02354117A EP 02354117 A EP02354117 A EP 02354117A EP 1281480 A1 EP1281480 A1 EP 1281480A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- clamp
- upper jaw
- rod
- lower support
- jaw
- 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.)
- Granted
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
- B25B5/061—Arrangements for positively actuating jaws with fluid drive
- B25B5/062—Arrangements for positively actuating jaws with fluid drive with clamping means pivoting around an axis parallel to the pressing direction
Definitions
- the present invention relates to a clamp. It relates to more particularly a clamp intended for positioning and the maintenance of parts during their machining by machining centers specific working by chip removal.
- the object of the present invention is to remedy the disadvantages mentioned above using means, simple, reliable, easy to put implemented and inexpensive. It offers an easy to use clamp and which can be retracted to leave sufficient space for the passage of cutting tools during machining either at the flange, either at the level of support.
- the clamp the invention is of the type comprising an upper jaw with a surface of stop and a lower jaw with a bearing surface, said jaws being movable to move relative to each other along an axis of displacement under the action of biasing means, and is characterized in which it includes a retracting device which allows one of the bearing or abutment surfaces to retract to pass from a position of clamping where it at least partially covers the other bearing surface or stop in the direction of movement of the jaws in a free position where it no longer covers it and vice versa.
- the retracting device is implemented by the displacement of the jaws under the action of the means of solicitation.
- the retracting device is a swivel type device which allows the flange to be swiveled greater than the other around the axis of movement of the jaws.
- the biasing means include a secondary cylinder which moves the upper flange with respect to the lower support along the axis of displacement.
- the invention is characterized in that the displacement of the flange between a low point and a high point and in that the pivoting of the upper flange, thanks to the retracting device, takes place when moving it in the ascending phase nearby from the high point, and when it goes from a low rest position corresponding to the low point at a high clamping position or Conversely.
- the retraction device comprises a guide rod and fixed pivoting having a propeller intended to cooperate with a dog clutch to rotate it half a turn when it travels the rod and its propeller from bottom to top, said dog comprising notches which allow it to be secured in rotation with a drive plate integral with a cylinder rod which partly forms the upper flange, to obtain pivoting of the flange surface upper when the retraction device is used.
- the jack rod which carries a flange to its upper end to form the upper flange, has a internal bore, the upper part of which is intended to allow the passage of the guide and pivot rod, the lower part of which constitutes a housing for the training dog whose dimensions allow the dog to be positioned either in the engaged low position where its notches cooperate with the notches of the drive plate attached to the actuator rod to rotate it during the climb, or high position where the notches are disengaged to let the dog pivot freely as the cylinder rod descends along the rod guidance and pivoting.
- the biasing means include a main cylinder that allows the movement of the support lower, while said lower support forms the cylinder body of a secondary cylinder whose cylinder rod partly forms the upper flange and in that the retracting device is implemented so automatic by moving the upper flange under the action of the secondary cylinder.
- the shape of the support and of the upper flange jaw is complementary to constitute together a circular profile centered on the axis of movement of the jaws.
- the shape of the surface of the lower support is a portion of circle smaller than that of the abutment surface of the upper jaw.
- the present invention relates to a clamp carrying the general reference (1). It is more particularly intended for positioning and clamping of parts (2) for their machining by specific machining centers; however, it could be used for other similar applications with minor adaptations without however, depart from the claimed protective field of the invention.
- She has a lower support (3) provided with a lower support surface (3a) and an upper jaw (4) with an upper clamping surface (4), said jaw allowing to grip a piece (2), as shown in particular Figure 5.
- the flange (1) In its clamping position (A), has its upper clamping surface (4a) perpendicular to its surface lower support (3a), while biasing means allow to solicit them towards each other.
- the lower support (3) and the upper jaw (4) are movable relative to each other to move along an axis (ZZ ') called axis of displacement of the jaws under the action of the means of solicitation.
- ZZ ' axis of displacement of the jaws under the action of the means of solicitation.
- this has a rounded shape and the axis of displacement (ZZ ') is its axis of revolution, the flange being preferably intended to be used upright with the axis (ZZ ') disposed at the vertical.
- the clamping of the jaws would no longer be carried out on the height, but so lateral without departing from the protective field of the invention.
- the clamp (1) comprises a device retraction which allows to move one of the bearing surfaces or clamping (3a, 4a) of the lower support (3) and the upper jaw (4) to that it is no longer plumb with the other surface.
- a device retraction which allows to move one of the bearing surfaces or clamping (3a, 4a) of the lower support (3) and the upper jaw (4) to that it is no longer plumb with the other surface.
- their surfaces support and clamping (3a, 4a) cannot grip parts and the jaws can thus come to the rest position (B), as illustrated in FIG. 1.
- the retracting device is a swivel-type device which allows the surface of the upper clamping (4a) around the axis of movement (ZZ ') of the support lower (3) and upper jaw (4) so that it no longer covers according to the direction (ZZ ') the lower support surface (3a) of the lower support (3).
- the retraction device is actuated by the biasing means which manage the movement of the lower support (3) and of the upper jaw (4) along the axis (ZZ '). It is thus implemented from automatically when moving the lower support (3) and the upper jaw (4) and is therefore not managed independently of these.
- the biasing means are constituted by a jack (5) called jack secondary, advantageously of pneumatic type, which acts on the jaw upper (4) to move it relative to the lower support (3) which forms the body of this secondary cylinder.
- Said displacement of the upper jaw (4) advantageously takes place between a high point (C), illustrated in FIGS. 8c and 9c, and a low point (B), illustrated in FIGS. 8a and 9d, corresponding to the position rest.
- the clamping position (A) illustrated in Figures 8d and 9a is located between the high point (C) and the low point (B) in the travel of the jaw (4) to an intermediate position defined as a function of the part (2) to be clamped.
- the retraction device is actuated by the displacement of the upper jaw (4) when it is near the high point (C) in an ascending phase, it makes it possible to rotate the clamping surface (4a) of the jaw (4) so that it no longer covers, even partially, the support surface (3a) of the lower support (3) according to the direction of movement (ZZ ') of the lower support (3) and the jaw upper (4).
- the retracting device is a mechanical type device which is not actuated or implemented only by the movement of the jaw (4) under the action of the jack (5) which moves it along the axis (ZZ '). It consists of a rod guide and pivot (6) which has at its upper end a propeller (7) intended to cooperate with a drive dog (8a) and its drive plate (8b) for rotating a cylinder rod (9) secured to said plate.
- the cylinder rod (9) carries at its end upper jaw (10) which has on its lower face the surface upper clamping (4a), it forms with said jaw the jaw upper (4).
- the rod guide and pivot (6) has a rectangular section intended to guide the dog (8a) which itself has an internal profile similar.
- the propeller (7) forms a half-turn (180 °), as shown in the Figure 7, and causes the U-turn dog (8a) to turn around when it runs through it.
- the dog (8a) is driven in longitudinal displacement towards the top (HA) by the drive plate (8b) which is integral with the rod cylinder (9), under the action of the secondary cylinder (5).
- Training notches (11a, 11b) make it possible to secure in rotation the plate (8b) and the dog clutch (8a) during this climb so that the U-turn turns the same movement of the plate (8b) and therefore of the rod (9) around the rod guide and pivot (6) which is arranged along the axis of displacement of the jaws (ZZ ').
- the cylinder rod (9) has an internal bore the upper part (12) of which favors the passage of the guide rod and pivot (6) and the lower part (13) of which forms a housing for the drive dog (8a).
- This accommodation is of sufficient size to allow the dog to take a low position where it is blocked in rotation by the notches (11b) of the plate (8b) and a high position where its notches (11a) are disengaged from the notches of the plate (8b) allowing it thus pivot freely in its housing during the descent.
- the flange of clamping (1) comprises a main cylinder (14) intended to allow the movement of the lower support (3) along the axis of movement (ZZ ').
- the support (3) which forms the cylinder body of the secondary cylinder (5) which manages the movement of the upper jaw (4) is also mobile according to the direction (ZZ ') inside the body (16) of the main cylinder (14).
- support lower (3) thus forms the piston of the main cylinder and can be retracted down to let the tool pass when it is no longer in use. note that this lower support (3) carries the guide and pivot rod (6) which allows the upper jaw (4) to pivot.
- the main and secondary cylinders (5,14) are type cylinders pneumatic whose supply is managed by a control unit based on information given by the machining center that machines the piece or by sensors arranged on the flange.
- a control unit based on information given by the machining center that machines the piece or by sensors arranged on the flange.
- he could be considered other types of motorization, without leaving the protective field of the invention.
- the shape of the jaws (10, 15) of the upper jaw (4) and the lower support (3) is complementary in order to form a circular profile centered on the axis of movement of the jaws (ZZ '), as shown in Figure 1, when in the rest position.
- the lower jaw has a bearing surface (3a) whose shape is a portion of circle smaller than the clamping surface (4a) which corresponds to the other portion of the complementary circle.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jigs For Machine Tools (AREA)
- Gripping Jigs, Holding Jigs, And Positioning Jigs (AREA)
- Wire Bonding (AREA)
- Sampling And Sample Adjustment (AREA)
- Physical Vapour Deposition (AREA)
- Manipulator (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0110167A FR2827803B1 (fr) | 2001-07-30 | 2001-07-30 | Bride de serrage |
| FR0110167 | 2001-07-30 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1281480A1 true EP1281480A1 (de) | 2003-02-05 |
| EP1281480B1 EP1281480B1 (de) | 2005-07-06 |
Family
ID=8866066
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP02354117A Expired - Lifetime EP1281480B1 (de) | 2001-07-30 | 2002-07-29 | Spannvorrichtung |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP1281480B1 (de) |
| AT (1) | ATE299074T1 (de) |
| DE (1) | DE60204925T2 (de) |
| FR (1) | FR2827803B1 (de) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1655104A3 (de) * | 2004-11-05 | 2006-07-19 | Ludwig Ehrhardt GmbH | Spannvorrichtung zum Spannen von Gegenständen |
| KR20180125442A (ko) * | 2016-03-25 | 2018-11-23 | 하이드로블록 에스.알.엘. | 공작 기계 상에 피가공물을 고정하는 장치 |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2451245A1 (fr) * | 1979-03-10 | 1980-10-10 | Maier Andreas | Dispositif de serrage pivotant pour fixer une piece a usiner sur le plateau ou la table d'une machine-outil |
| EP0085169A1 (de) * | 1982-01-15 | 1983-08-10 | Maschinenfabrik Hilma GmbH | Schwenkspanner |
| DE3334401A1 (de) * | 1983-09-23 | 1985-04-04 | A. Römheld GmbH & Co KG, 6312 Laubach | Spann- und stuetzeinheit fuer werkzeugmaschinen |
| EP0173169A1 (de) * | 1984-08-22 | 1986-03-05 | Applied Power Inc. | Schwenkspanner |
| US4620695A (en) * | 1984-08-28 | 1986-11-04 | Davan Industries | Power clamping apparatus |
-
2001
- 2001-07-30 FR FR0110167A patent/FR2827803B1/fr not_active Expired - Fee Related
-
2002
- 2002-07-29 AT AT02354117T patent/ATE299074T1/de not_active IP Right Cessation
- 2002-07-29 EP EP02354117A patent/EP1281480B1/de not_active Expired - Lifetime
- 2002-07-29 DE DE60204925T patent/DE60204925T2/de not_active Expired - Lifetime
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2451245A1 (fr) * | 1979-03-10 | 1980-10-10 | Maier Andreas | Dispositif de serrage pivotant pour fixer une piece a usiner sur le plateau ou la table d'une machine-outil |
| EP0085169A1 (de) * | 1982-01-15 | 1983-08-10 | Maschinenfabrik Hilma GmbH | Schwenkspanner |
| DE3334401A1 (de) * | 1983-09-23 | 1985-04-04 | A. Römheld GmbH & Co KG, 6312 Laubach | Spann- und stuetzeinheit fuer werkzeugmaschinen |
| EP0173169A1 (de) * | 1984-08-22 | 1986-03-05 | Applied Power Inc. | Schwenkspanner |
| US4620695A (en) * | 1984-08-28 | 1986-11-04 | Davan Industries | Power clamping apparatus |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1655104A3 (de) * | 2004-11-05 | 2006-07-19 | Ludwig Ehrhardt GmbH | Spannvorrichtung zum Spannen von Gegenständen |
| KR20180125442A (ko) * | 2016-03-25 | 2018-11-23 | 하이드로블록 에스.알.엘. | 공작 기계 상에 피가공물을 고정하는 장치 |
| JP2019512400A (ja) * | 2016-03-25 | 2019-05-16 | ハイドロブロック エス．アール．エル． | 工作機械上で被加工物をロックする装置 |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2827803A1 (fr) | 2003-01-31 |
| EP1281480B1 (de) | 2005-07-06 |
| DE60204925T2 (de) | 2006-04-20 |
| FR2827803B1 (fr) | 2003-10-10 |
| ATE299074T1 (de) | 2005-07-15 |
| DE60204925D1 (de) | 2005-08-11 |
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