EP1402188A1 - Arbeitszylinder - Google Patents
ArbeitszylinderInfo
- Publication number
- EP1402188A1 EP1402188A1 EP02754684A EP02754684A EP1402188A1 EP 1402188 A1 EP1402188 A1 EP 1402188A1 EP 02754684 A EP02754684 A EP 02754684A EP 02754684 A EP02754684 A EP 02754684A EP 1402188 A1 EP1402188 A1 EP 1402188A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cylinder
- working cylinder
- profile part
- cylinder tube
- cylinder 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.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/20—Other details, e.g. assembly with regulating devices
- F15B15/28—Means for indicating the position, e.g. end of stroke
- F15B15/2892—Means for indicating the position, e.g. end of stroke characterised by the attachment means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
- F15B15/1428—Cylinders
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
- F15B15/1438—Cylinder to end cap assemblies
Definitions
- the invention relates to a working cylinder as can be used in particular in the field of pneumatics or hydraulics.
- Known working cylinders have a cylinder tube extending between two cylinder covers, which is designed as a profile tube which, due to its profile, enables certain additional functions, for example the attachment of sensors in attachment grooves or the implementation of actuating fluid through integrated channels. Particularly in the case of an aluminum extruded profile, a very cost-effective integration of numerous additional functions is possible.
- a working cylinder with a cylinder tube extending between two cylinder covers and with several tie rods arranged distributed along the outer circumference of the cylinder tube and braced with the two cylinder covers, at least one of which is formed by a profile part which is located in the
- the circumferential direction of the cylinder tube extends a little along its outer circumference and the profiling provides means for performing at least one additional function (hereinafter referred to as "additional function means").
- additional function means hereinafter referred to as "additional function means"
- the working cylinder combines the precise manufacturing possibilities of conventional tie rod cylinders with the inexpensive integration possibility for additional functions of the working cylinders equipped with a profiled cylinder tube, so that one could speak of a hybrid cylinder.
- the cylinder tube can have a geometry that is very easy to manufacture, in particular a cylindrical and preferably circular-cylindrical design, but at least one tie rod is not designed in the known manner as a tie rod, but rather as a specially profiled component (profile part) that extends a little along of the outer circumference of the cylinder tube and which is designed with regard to its profiling in such a way that additional functional means are formed which allow the exercise of at least one additional function.
- Such an additional function can consist, for example, of fastening sensors, of cylinder accessories and / or of the cylinder itself, or of providing through channels for the passage of cables and / or hoses and / or one for the operation of the working cylinder provided actuating fluids.
- a respective profile part is expediently chosen such that the cylinder tube is encompassed along part of its circumference.
- a respective profile part can have such a circumferential extent that it extends over at least 45 ° and preferably over at least 90 ° of the outer circumference of the cylinder tube, a particularly expedient extension range being between 90 ° and 180 ° of the circumferential extent of the cylinder tube.
- At least one and preferably all of the profile parts expediently have an inner surface adapted to the curvature of the outer contour of the cylinder tube on the inner side facing the cylinder tube, the adaptation being able in particular to be provided in such a way that the radius of curvature of the inner surface of the profile part is equal to or slightly larger than that Radius of curvature of the cylinder tube in the assigned area.
- the profile part in question is at least slightly radial spaced 1 with respect to the outer surface of the cylinder tube is arranged.
- the working cylinder has particularly compact dimensions if at least one and preferably each profile part is curved in the manner of a cross-section, the concave region facing the cylinder tube.
- the length dimensions of the profile parts on the one hand and the cylinder tube on the other hand are preferably matched to one another in such a way that the profile part is arranged with an axial distance between the cylinder covers.
- the bracing between the cylinder covers and the cylinder tube is therefore not hindered by the profile parts.
- Fig. 2 shows a cross section through the working cylinder
- Fig. 1 according to section line II-II in the region of the cylinder tube flanked by profile parts.
- the working cylinder designated in its entirety with reference number 1, is operated in particular with compressed air as the actuating fluid and is mainly used as a pneumatic cylinder. Nevertheless, operation with a hydraulic actuating fluid would also be possible.
- the working cylinder shown with shortened length dimensions in FIG. 1 has two spaced-apart, first and second cylinder covers 2a, 2b, between which a cylinder tube 3 extends.
- the cylinder tube 3 has a relatively simple construction with a smooth outer surface and a cylindrical design. It is preferably a circular cylindrical cylinder tube 3.
- the cylinder tube 3 expediently has the same wall thickness all around.
- the cylinder tube 3 is in particular a metal tube.
- the two cylinder covers 2a, 2b are essentially plate-like, but have on the cylinder tube 3 facing inside via an -axial projection 4, the radially oriented outer contour of which is adapted to the inner contour of the cylinder tube 3, so that the latter can be plugged onto the face of the respectively associated axial projection 4. In this way, precise centering takes place between the cylinder covers 2a, 2b and the cylinder tube 3 in the assembled state.
- each axial projection 4 on the radially oriented circumferential surface has a circumferential groove equipped with a sealing ring 5 - in FIG. 1 this is only shown in connection with the first cylinder cover 2a shown on the left - the sealing ring 5 being the transition region between the cylinder tube 3 and seals the relevant cylinder cover 2a, 2b in a fluid-tight manner.
- the interior 6 of the cylinder tube 3 contains a piston, not shown in the drawing, which is in sealing contact with the inner surface 7 of the cylinder tube 3 via a sealing arrangement.
- the piston is axially movable relative to the cylinder tube 3, the movement being transmitted to a force output member 8 which is accessible outside the cylinder tube 3.
- the force output member 8 is designed in the form of a piston rod which passes through the first cylinder cover 2a so as to be slidable and sealed and is coupled in motion in the interior 6 with the piston (not shown).
- the section of the force which lies outside the first cylinder cover 2a dispensing member 8 can be connected to any object to be moved.
- the piston divides the interior space 6 into two axially successive working spaces, with respect to which the supply and discharge of the actuating fluid used is possible.
- the latter takes place via a first (12a) and a second (12b) fluid channel, each of which opens out at one end via one of the cylinder covers 2a, 2b to the associated work space and at the other end each leads to a connection opening (not shown in more detail), which is located on the cylinder tube 3 are located on the opposite outside of the second cylinder cover 2b.
- Fluid lines for supplying and discharging the actuating fluid can be connected to the connection openings.
- the piston can be caused to perform an axial linear movement, which can be tapped at the force output element 8.
- the working cylinder 1 is equipped with several tie rods 13 which are arranged in the area of the outer circumference of the cylinder tube 3, one in the through Double arrow indicated circumferential direction 14 of the cylinder tube 3 distributed arrangement of the tie rods 13 is provided and the tie rods 13 each axially parallel extend to the cylinder tube 3 between the two cylinder covers 2a, 2b.
- the tie rods 13 are each axially clamped with two cylinder covers 2a, 2b, which is done by means of clamping elements 15, which in the exemplary embodiment are designed in the form of clamping screws 15a.
- the dimensions of the cylinder covers 2a, 2b measured transversely to the longitudinal axis 16 of the working cylinder 1 are at least partially larger than the outer diameter of the cylinder tube 3, so that the cylinder tube 3 is protruded radially by the cylinder covers 2a, 2b, the tie rods 13 between sections 17a, 417b the cylinder cover 2a, 2b are incorporated, which protrude beyond the cylinder tube 3 in the manner mentioned.
- the cylinder covers 2a, 2b with the mentioned sections 17a, 17b protrude in front of the axially oriented end faces 18a, 18b of a respective tie rod 13.
- each cylinder cover 2a, 2b is provided with a plurality of axial through holes 22 through which the
- Clamping screws 15a are pushed through, whereby they can be supported with their screw heads 23 on the associated cylinder cover 2a, 2b.
- the threaded shafts 24 are screwed into aligned fastening holes 25 of the associated tie rod 13, which are open towards the relevant end face 18a, 18b.
- the threads in the fastening holes 25 are suitably grooved by the threaded shafts 24 themselves when screwing in.
- the length dimensions of the tie rods 13 are matched to the length of the cylinder tube 3 such that with cylinder covers 2a, 2b firmly attached to the end face of the cylinder tube 3, there is a slight axial distance between the tie rods 13 and at least one of the cylinder covers 2a, 2b remains.
- tie rods 13 are each formed by a profile part 26, which extends in the circumferential direction 14 of the cylinder tube 3 to a certain extent along the outer circumference of this cylinder tube 3, with at least one being exercised at the same time by the chosen type of profile Additional function means 27 are provided.
- profile part 26 extends in the circumferential direction 14 of the cylinder tube 3 to a certain extent along the outer circumference of this cylinder tube 3, with at least one being exercised at the same time by the chosen type of profile Additional function means 27 are provided.
- These integrated access Set function means 27 enable the tie rods 13 to be used for other functions in addition to their tie rod function.
- the design of the tie rods 13 in the form of profile parts 26 opens up the advantage of a high degree of design freedom in the constructive implementation of the additional functional means. This is particularly the case when the profile parts 26, as in the exemplary embodiment, are designed as extruded parts, in particular consisting of aluminum material. With the corresponding implementation of the extrusion tool, profiles can be flexibly adapted to the respective application.
- the design as extruded parts is generally preferable to a design as casting mold parts, which is also possible in principle, although very low-weight parts can be produced there with a plastic design.
- the number of existing profile parts 26 taking over the tie rod function is in principle arbitrary, but expediently at least two such profile parts 26 are present, as is the case with the exemplary embodiment.
- the circumferential extent of the profile parts 26 in the exemplary embodiment is in each case in the range between 90 ° and 180 ° of the circumferential extent of the cylinder tube 3. It is advantageous if the circumferential extent of a respective profile part 26 is chosen to be at least large enough that it extends over at least 45 ° and preferably extends over at least 90 ° of the outer circumference of the cylinder tube 3. Very compact dimensions of the working cylinder 1 can be realized if the profile parts 13 are curved in the manner of a cross section, the concave region facing the cylinder tube 3. This makes it possible to design the profile part 26 in which it follows the circumferential course of the cylinder tube 3 directly.
- the profile parts 26 on the concave inner side facing the cylinder tube have an inner surface 28 which is adapted to the curvature of the outer contour of the cylinder tube 3.
- the radius of curvature of these inner surfaces corresponds in the exemplary embodiment to that of the facing outer surface 32 of the Cylinder tube 3, but can also be slightly larger, especially when the profile part in question
- profile parts 26 further shows that if a plurality of profile parts 26 are present, the profile parts arranged adjacent to one another in the circumferential direction can be arranged at a distance from one another.
- the surface section of the outer surface 32 of the cylinder tube 3 covered by the profile parts 26 can be limited to those areas in which an additional function is to be provided.
- the profile parts 26 expediently have overall greater thickness dimensions than the wall thickness of the cylinder tube 3. This allows the integration of additional functional means to a particular degree
- additional functional means 27 are accordingly provided, which form a channel 33 which is closed on the circumference and which runs through one of the profile parts 26 in the longitudinal direction and opens out to both end faces 18a, 18b.
- This channel 33 is part of the first fluid channel 12a, through which the actuating fluid can be conveyed from the second cylinder cover 2b arranged at the rear to the first cylinder cover 2a arranged at the front.
- the other profile part 26 also has a comparable channel 33 ', which, however, is not used for fluid transmission in the exemplary embodiment.
- those material areas of the profile parts 26 which are not required for additional functions can have one or more cavities 34 which are continuous in the longitudinal direction and which, for example, result in material savings.
- the cavities 34 can also be used as channel-like additional functional means and serve, for example, to accommodate electrical cables and / or hoses which are to be laid in the longitudinal direction of the cylinder tube 3 and are used, for example, in connection with sensory measures.
- the profile parts 26 also have additional functional means 27, which form fastening means 35.
- These fastening means 35 can in particular be designed in the form of fastening grooves which can be used for fastening sensors and / or cylinder accessories and / or the working cylinder itself.
- the desired fastening means 35 can be provided as required, with various types of fastening being readily implemented. cleaning agents 35 can be realized at the same time, which can later be used as required.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Actuator (AREA)
- Details Of Reciprocating Pumps (AREA)
- Harvester Elements (AREA)
- Glass Compositions (AREA)
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE20110965U DE20110965U1 (de) | 2001-07-03 | 2001-07-03 | Arbeitszylinder |
DE20110965U | 2001-07-03 | ||
PCT/EP2002/006622 WO2003004881A1 (de) | 2001-07-03 | 2002-06-15 | Arbeitszylinder |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1402188A1 true EP1402188A1 (de) | 2004-03-31 |
EP1402188B1 EP1402188B1 (de) | 2005-11-30 |
Family
ID=7958827
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02754684A Expired - Lifetime EP1402188B1 (de) | 2001-07-03 | 2002-06-15 | Arbeitszylinder |
Country Status (7)
Country | Link |
---|---|
US (1) | US6840154B2 (de) |
EP (1) | EP1402188B1 (de) |
CN (1) | CN1297754C (de) |
AT (1) | ATE311540T1 (de) |
CA (1) | CA2418926A1 (de) |
DE (2) | DE20110965U1 (de) |
WO (1) | WO2003004881A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102913504A (zh) * | 2006-01-20 | 2013-02-06 | 费希尔控制产品国际有限公司 | 用于致动器壳体的隔离器 |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102009014815A1 (de) | 2009-03-25 | 2010-09-30 | Festo Ag & Co. Kg | Gehäuserohr und damit ausgestatteter Linearantrieb |
DE102014016948A1 (de) * | 2014-11-18 | 2016-05-19 | PREMETEC Automation GmbH | Aufnahmevorrichtung einer Positionserkennungsvorrichtung zur Positionserkennung eines Kolbens eines Arbeitszylinders und Positionserkennungsvorrichtung |
DE102016015542A1 (de) | 2016-12-27 | 2018-06-28 | Festo Ag & Co. Kg | Lagerdeckel mit bundschraubenbefestigung |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4086456A (en) * | 1976-10-04 | 1978-04-25 | Cincinnati Milacron Inc. | Mounting for magnetic switch |
FR2425567A1 (fr) | 1978-05-12 | 1979-12-07 | Outillage Air Comprime | Verin |
GB2230385B (en) * | 1989-04-08 | 1993-10-13 | Festo Kg | A control device |
US5167182A (en) * | 1991-10-04 | 1992-12-01 | Sims James O | Modular fluid actuator |
DE9207582U1 (de) * | 1992-06-04 | 1992-08-20 | Festo KG, 7300 Esslingen | Gehäuse für einen Arbeitszylinder |
DE29605723U1 (de) * | 1996-03-28 | 1996-05-30 | Festo Kg, 73734 Esslingen | Fluidbetätigter Drehantrieb |
JP3295619B2 (ja) * | 1997-07-16 | 2002-06-24 | エスエムシー株式会社 | 流体圧シリンダにおけるセンサ取付具 |
DE19925600A1 (de) | 1999-06-04 | 2000-12-14 | Sbs Sondermaschinen Gmbh | Leichtbau-Hydraulikzylinder mit Zugankern |
-
2001
- 2001-07-03 DE DE20110965U patent/DE20110965U1/de not_active Expired - Lifetime
-
2002
- 2002-06-15 DE DE50205126T patent/DE50205126D1/de not_active Expired - Fee Related
- 2002-06-15 US US10/344,816 patent/US6840154B2/en not_active Expired - Fee Related
- 2002-06-15 WO PCT/EP2002/006622 patent/WO2003004881A1/de not_active Application Discontinuation
- 2002-06-15 CA CA002418926A patent/CA2418926A1/en not_active Abandoned
- 2002-06-15 EP EP02754684A patent/EP1402188B1/de not_active Expired - Lifetime
- 2002-06-15 CN CNB028134583A patent/CN1297754C/zh not_active Expired - Fee Related
- 2002-06-15 AT AT02754684T patent/ATE311540T1/de not_active IP Right Cessation
Non-Patent Citations (1)
Title |
---|
See references of WO03004881A1 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102913504A (zh) * | 2006-01-20 | 2013-02-06 | 费希尔控制产品国际有限公司 | 用于致动器壳体的隔离器 |
CN102913504B (zh) * | 2006-01-20 | 2015-11-18 | 费希尔控制产品国际有限公司 | 用于致动器壳体的隔离器 |
Also Published As
Publication number | Publication date |
---|---|
US20030172806A1 (en) | 2003-09-18 |
DE50205126D1 (de) | 2006-01-05 |
WO2003004881A1 (de) | 2003-01-16 |
DE20110965U1 (de) | 2001-09-06 |
US6840154B2 (en) | 2005-01-11 |
ATE311540T1 (de) | 2005-12-15 |
EP1402188B1 (de) | 2005-11-30 |
CN1297754C (zh) | 2007-01-31 |
CN1522344A (zh) | 2004-08-18 |
CA2418926A1 (en) | 2003-02-07 |
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