Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
  • F16C29/00—Bearings for parts moving only linearly
  • F16C29/004—Fixing of a carriage or rail, e.g. rigid mounting to a support structure or a movable part
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
  • F16B5/00—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them
  • F16B5/06—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of clamps or clips
  • F16B5/0685—Joining sheets or plates to strips or bars

Definitions

• the invention relates to a fastening device with a mounting base comprehensive a comprehensive linear guide rail, with a support member having an introduced in the axial direction of the groove for releasably receiving the mounting base, and with a clamping element, wherein the mounting base is held by means of the clamping element in the groove.
• Such a fastening device is used for attaching a linear guide rail of a linear bearing on any support element.
• the support member has a groove extending in the axial direction, in which the mounting base of the linear guide rail is releasably clamped.
• the linear guide rail is in this case designed, in particular, as a profiled rail along which a guide carriage is displaceably mounted, for example, by means of a roller bearing in the longitudinal direction or in the axial direction.
• Such a fastening device is known for example from DE 103 28 336 A1.
• the clamping device has in this case at least one holding element and a clamping element, wherein for attachment of the holding or clamping element a connection with the support element is proposed in particular by means of bolts.
• the attachment of the holding or clamping element either directly with a screw bolt or with a screwed or clamped to the support plate covering unit disadvantageously requires an adaptation of the supporting elements, for example, by the introduction of threaded holes or additional provided for clamping recesses. Such an adaptation is associated with not inconsiderable costs.
• a fastening device for a linear bearing wherein a linear guide rail is releasably clamped with its mounting base in a wedge-shaped groove of the support element.
• the clamping force necessary for an entrapment is effected here by the configuration of a groove side as a leg which is elastically pivotable against the mounting base and which is pressed against the mounting base by introducing a clamping element.
• a fastening device of the type mentioned wherein the mounting base has a running in the axial direction, the clamping element form-fitting recess against which the clamping element is supported by applying a clamping force.
• the invention is based on the recognition that an additional holding element for fixing or stabilizing the clamping element in the groove of the support element can be omitted if in the mounting base extending in the axial direction, the clamping element form-fitting recess for the Clamping element is introduced. As a result, the clamping element is held securely along the linear guide rail in the groove of the support element. It is sufficient for the invention that the clamping element is partially enclosed by the recess in a form-fitting manner. For positive locking, the recess in particular has a shape complementary to the clamping element.
• the resulting after introduction of the mounting base in the groove of the support element between the recess and the facing groove side clear width is slightly smaller than the thickness of the introduced clamping member.
• the clamping element is then pressed in the axial direction or in the longitudinal direction of the linear guide rail between the recess and the groove side facing it.
• the particular rod-shaped clamping element may in this case have an arbitrary cross section, as long as this causes a stable mounting of the mounting base in the groove.
• a circular cross section or a cross section in the form of a polygon lend themselves here.
• At least the groove side facing the clamping element is chamfered to form an undercut. In this way, a particularly secure attachment of the mounting base is effected in the groove of the support element.
• Each force directed away from the groove base on the linear guide rail leads to an increase in the clamping force.
• the side facing away from the clamping element groove side of the support member may be formed in particular with a form-fitting with the side facing the mounting base. In this way, the side facing away from the clamping element longitudinal side of the mounting base and the linear guide rail is positively pressed against the corresponding groove side. This further increases the safety of such a fastening device.
• the groove of the support element is wedge-shaped.
• the groove of the support element in order to form a positive connection special side facing away from the clamping element side surface of the mounting base and the associated groove side the same inclination.
• the linear guide rail is formed substantially mirror-symmetrically, wherein the mounting base has on each of its longitudinal sides in each case the concave recess.
• the present invention also offers the advantage of integrating a high-resolution position-measuring system.
• the head surface of the linear guide rail is free of threaded holes.
• the clamping element is designed to be variable in thickness for applying the clamping force. Such a configuration of the clamping element ensures easy mounting of the linear guide rail in the groove of the support element.
• the linear guide rail is used with its mounting base in the correspondingly shaped groove and the clamping element introduced with a reduced thickness along the recess of the clamping base in the longitudinal direction or in the axial direction. Subsequently, the thickness of the clamping element is increased, whereby the clamping force is generated against the recess and thus against the mounting base.
• a clamping element for example, a high pressure resistant clamping hose is used.
• a pressure medium located in the interior of the clamping hose By appropriate pressure introduction via a pressure medium located in the interior of the clamping hose, the thickness of the clamping hose can be increased.
• a clamping element is conceivable, which allows a thickness increase by a mechanical spreading, for example by means of spring force.
• this is designed as a coiled coil spring in the axial direction.
• a helical spring helically wound in the axial direction or in the longitudinal direction of the linear guide rail, it is possible to reduce its diameter, for example by applying a tensile stress. With the diameter of the helical spring reduced in tension, it can be inserted longitudinally along the recess of the mounting base inserted into the groove. Under application of their spring force then clamps the coil spring against the recess of the mounting base, when the tensile stress is eliminated.
• the clamping effect is thereby reinforced or introduced by the coil spring is axially compressed, for example by means of a screw axially passing through the screw spring and a screw-threaded end of the screw.
• a compression of the coil spring is effected, which leads to an expansion of its diameter and thus to the necessary clamping force of the coil spring against the recess of the mounting base.
• the clamping element is designed as a hollow cylinder filled with a pressure medium.
• a pressure clamping tube Such a configuration is also referred to as a pressure clamping tube.
• the walls of the pressure clamping tube are usually made of a thin-walled metal, in particular a steel.
• the interior is filled with a suitable pressure medium such as oil, silicone, acrylic, grease or with another, tough and incompressible mass. If the pressure medium is subjected to a pressure, this pressure has an even effect on the entire wall of the hollow cylinder. As a result, there is an expansion of the diameter or the cross section of the pressure clamping tube, which leads to a jamming of the mounting base in the groove of the support element.
• a pressure clamping tube in the relaxed state for mounting the linear guide rail can easily be introduced along the recess of the mounting base, aligned with the mounting base and then realized by pressure introduction into the pressure medium jamming.
• the hollow cylinder of the pressure clamping tube is provided, at least on one end side, with a screw-in closure screw acting on the pressure medium.
• the screw plug can then be screwed in by hand if necessary with a suitable tool for pressure introduction inwards. Due to the small, acting on the printing medium surface of the screw plug can with relatively little effort in the interior of the pressure clamping tube a ho- pressure to be built up. This leading to an increase in the thickness of the pressure clamping tube pressure holds the linear guide rail securely in the groove of the support member.
• the pressure medium expands, so that the pressure tube returns to the unstretched original condition.
• the clamping element can then be pushed out axially and the linear guide rail can be removed without destruction from the groove of the support element.
• an adapter element is inserted between the clamping element and its facing groove side facing the clamping element has an axial, to the clamping element positive recess for partially receiving the clamping member and the groove side facing complementary formed to the groove side.
• a press-fitting of the mounting base is made possible in a wider groove.
• an improvement in the stability of the fastening device can be achieved thereby if necessary.
• the side surface of the matching element formed complementary to the facing groove side a positive connection between the fitting element and the groove side is made possible there.
• an additional security in a force on the linear guide rail is given away from the groove bottom.
• FIG. 2 shows in a cross section an alternative fastening device, wherein a linear guide rail is clamped via a clamping element and via an adapter element in the groove of a supporting element,
• Fig. 3 is a schematic representation of a trained as a helical spring clamping element
• Fig. 4 in a cross section designed as a clamping element pressure clamping tube and
• FIG. 5 shows an alternative embodiment of the pressure clamping tube according to FIG.
• a fastening device 1 for a linear bearing in a cross section.
• the fastening device 1 in this case comprises a linear guide rail 2, which is detachably inserted into the groove 5 of a support element 6 by means of a mounting base 3.
• the groove 5 is in this case with a flat groove bottom 7 and with two bevelled Nut sides 8 and 9 milled perpendicular to the plane of the sheet in the support member 6.
• the groove 5 is thus formed as a keyway.
• the linear guide rail 2 and thus also the mounting base 3 have a mirror symmetry, so that insertion into the groove 5 in two mutually rotated by 180 ° longitudinal positions is possible.
• a rod-shaped clamping element 10 is pressed with a circular cross-section.
• the mounting base 3 jammed on the side facing away from the clamping element 10 side surface form fit with the groove side. 9
• the tapered side surfaces of the mounting base 3 is in each case in the axial direction, d. H. perpendicular to the plane of the page, a concave to the clamping element 10 complementary recess 11 is introduced, the inner wall extending perpendicular to the axial direction arcuate.
• the rod-shaped clamping element 10 is inserted.
• the dimensioning of the groove 5 and the mounting base 3 are such that the clear width between the inner wall of the recess 11 and the groove side 8 is slightly smaller than the diameter of the inserted clamping element 10.
• the linear guide rail 2 For mounting the linear guide rail 2, this is first inserted into the groove 5 of the support member 6. Subsequently, in the axial direction or in the longitudinal direction of the linear guide rail 2, perpendicular to the plane of the sheet, the rod-shaped clamping element 10 is pressed against the groove side 8 along the recess 11. Due to the slightly reduced Spaltbema- tion created by the clamping element 10, a clamping force which is collected by the groove side 8 and directed against the recess 11 of the mounting base 3. As a result, the side facing away from the clamping element 10 side surface of the mounting base 3 is positively pressed against the groove side 9. The linear guide rail 2 is securely held in the groove 5 of the support member 6.
• a central recess 13 is introduced.
• the linear guide rail 2 further has a symmetrical mounting geometry 12.
• the guide carriage engages the lienar guide rail 2 from above and is mounted so as to be longitudinally displaceable by means of rolling bearings in the receiving geometry 12.
• FIG. 2 an alternative embodiment for a fastening device V is also shown in a cross section.
• like reference numerals designate like parts.
• the linear guide rail 2 in this case has a Fig. 1 corresponding geometry. It can be seen here the extending on both sides of the mounting base in the longitudinal direction, in cross-section an arcuate inner wall having recesses eleventh
• the fastening device 1 'shown in FIG. 2 has a groove 5 introduced into the support element 6 with a greater width.
• a matching element 15 is now provided, wherein between the matching element 15 and the mounting base 3, the clamping element 10 is inserted.
• the fitting element 15 has on its side facing the clamping element 10 in the longitudinal direction, d. H. introduced perpendicular to the leaf level, recess 16.
• this recess has a complementary to the clamping element 10 or positive shape.
• the inner wall of the recess 16 extends perpendicular to the axial direction of a circular arc.
• the rod-shaped clamping element 10 is thus partially covered by the recess 16 of the fitting element 15 and partially by the recess 11 of the mounting base 3.
• the adaptation element 15 On the side facing away from the clamping element 10, the adaptation element 15 has a bevelled side surface, which is adapted to the inclination of the groove side 8 in the degree of inclination.
• the fitting element 15 For easier assembly, the fitting element 15 has chamfered insertion surfaces.
• the linear guide rail 2 in the groove 5 of the support member. 6 introduced.
• the matching element 8 is introduced.
• the clamping element 10 is pressed in the axial direction between the recess 16 of the fitting element 15 and the exception 11 of the mounting base 3.
• the groove 5 is dimensioned such that the clear width between the inner wall of the recess 16 of the fitting element 15 and the inner wall of the recess 11 of the mounting base 3 is slightly smaller than the diameter of the clamping element 10.
• the preparation of a clamping connection of the mounting base 3 in the groove of the support member 6 in the fastening device 1 and Y shown in FIG. 1 and 2 can basically - as described - be made by appropriate dimensioning under pressing of the clamping element 10.
• a thickness-variable clamping element 10 is used, which can easily be introduced during assembly with a reduced diameter along the recess 11 of the mounting base 3 or along the recess 16 of the matching element 15. To generate the clamping force or for producing the clamping connection, the diameter of the clamping element is then increased.
• FIG. 3 shows an embodiment 10 'in the form of a helical spring wound in the axial direction.
• the helical spring 17 deformed by applying a tensile force represented by the two arrows 21. With such a pulling force the diameter 20 of the coil spring 17 decreases, so that the coil spring 17 can be introduced in this under tension state with a reduced diameter 20 along the recess 11 of FIG. 1 and 2 for mounting the linear guide rail 2.
• Fig. 3 (b) now the same coil spring 17 is shown in a relaxed or in a compressed state. In this state, the individual turns of the coil spring 17 are closer together; the diameter 22 has increased accordingly. Due to the increased diameter 22, the clamping force required to hold the linear guide rail is effected in the fasteners 1 and V shown in Figs. 1 and 2, respectively.
• the clamping force to be introduced by the helical spring 17 can be reinforced by means of a screw passing axially through the helical spring 17 with a correspondingly threaded end piece, whereby the screw is compressed axially.
• a clamping device 10 "in the form of a so-called pressure clamping tube is shown in an alternative embodiment of a thickness-variable clamping element 10.
• the pressure clamping tube is designed as a hollow cylinder 24 extending along a cylinder axis 25.
• the wall 27 of the hollow cylinder consists of a thin-walled steel about one tenth of a mm thick, and on each side of the press-fit clamping tube shown has a threaded bore 29 into each of which a screw-in locking screw 30 is inserted.
• Fig. 4 (a) the pressure clamping tube is shown in a relaxed state. This can be recognized by the fact that the two-sided locking screws 30 are turned outwards.
• Fig. 4 (b) the pressure clamping tube is shown in a state in which 26 pressure is introduced into the pressure medium.
• the pressure is introduced by the fact that the locking screws 30 now inward in the direction of Arrows 31 and 32 are screwed.
• pressure is generated against the pressure medium 26 via the top surface of the closure screws 30, which pressure acts uniformly in the radial direction against the wall 27 of the hollow cylinder 24.
• the pressure clamping tube undergoes a radial expansion in accordance with the illustrated arrows 35.
• FIG. 5 shows the sealing of the closure screws 30 each with a piston 37 axially displaceable in the interior of the cylinder 24.
• the two axially displaceable pistons 37 are in each case sealed fluid-tight against the pressure medium 26 by means of an O-ring 38.

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• Engineering & Computer Science (AREA)
• General Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Bearings For Parts Moving Linearly (AREA)
• Connection Of Plates (AREA)

Priority Applications (1)

Applications Claiming Priority (2)

Publications (1)

Family

ID=39595520

Family Applications (1)

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Citations (3)

Family Cites Families (4)

• 2007
  • 2007-04-18 DE DE200710018159 patent/DE102007018159A1/de not_active Withdrawn
• 2008
  • 2008-04-07 JP JP2010503456A patent/JP5538211B2/ja not_active Expired - Fee Related
  • 2008-04-07 WO PCT/EP2008/054142 patent/WO2008128878A1/de active Application Filing

Patent Citations (3)

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