EP0264561B1 - Ein auf einem festen Grundkörper in der Höhe einstellbar gelagerter Tisch - Google Patents

Ein auf einem festen Grundkörper in der Höhe einstellbar gelagerter Tisch Download PDF

Info

Publication number
EP0264561B1
EP0264561B1 EP87111625A EP87111625A EP0264561B1 EP 0264561 B1 EP0264561 B1 EP 0264561B1 EP 87111625 A EP87111625 A EP 87111625A EP 87111625 A EP87111625 A EP 87111625A EP 0264561 B1 EP0264561 B1 EP 0264561B1
Authority
EP
European Patent Office
Prior art keywords
fixed base
adjustable table
threaded
adjustably mounted
struts
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
Application number
EP87111625A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0264561A3 (en
EP0264561A2 (de
Inventor
Holmer. Dipl.-Ing. Dangschat
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dr Johannes Heidenhain GmbH
Original Assignee
Dr Johannes Heidenhain GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Dr Johannes Heidenhain GmbH filed Critical Dr Johannes Heidenhain GmbH
Publication of EP0264561A2 publication Critical patent/EP0264561A2/de
Publication of EP0264561A3 publication Critical patent/EP0264561A3/de
Application granted granted Critical
Publication of EP0264561B1 publication Critical patent/EP0264561B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G12—INSTRUMENT DETAILS
    • G12B—CONSTRUCTIONAL DETAILS OF INSTRUMENTS, OR COMPARABLE DETAILS OF OTHER APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G12B5/00—Adjusting position or attitude, e.g. level, of instruments or other apparatus, or of parts thereof; Compensating for the effects of tilting or acceleration, e.g. for optical apparatus

Definitions

  • the invention relates to a table which is mounted such that it can be adjusted in height on a fixed base body according to the preamble of claim 1.
  • a table is known adjustable on a solid base body for tilting instruments or measuring devices.
  • This adjustable table is mounted on the fixed base by means of three adjustment elements that are rotationally symmetrical to the center are arranged to the center of the adjustable table on the periphery thereof.
  • These three adjustment elements are connected to the fixed base body via a tangentially arranged leaf spring as a swivel joint with a tangential axis of rotation and to the adjustable table as a spatial joint via a spherical surface which engages in a corresponding concave recess in the adjustable table.
  • Each adjustment element consists of a carrier body with a centrally arranged prismatic incision, which is delimited by a base plate.
  • this base plate On the outer surface of this base plate is parallel to prismatic incision attached to the leaf spring, which is firmly connected to the fixed base body in the tangential direction.
  • a threaded spindle is attached parallel to the prismatic incision, which engages in a corresponding threaded bore of a cylindrical adjusting bolt, the outer surface of which is free of play in the surfaces of the prismatic incision and the free end of which is provided with the spherical surface which fits into the corresponding concave recess of the adjustable table engages.
  • an internal hexagon is provided in the spherical surface of the adjusting bolt, into which an adjusting tool engages through a recess in the adjustable table.
  • the outer surface of the adjusting bolt is pressed against the surface of the prismatic incision with another leaf spring.
  • two rolling elements are fastened in the outer surface of the base plate of the carrier body, which engage in corresponding conical recesses which are arranged in the fixed base body in the tangential direction and form a swivel joint with a tangential axis of rotation.
  • a cylindrical pin is fastened in the outer surface of the base plate of the carrier body, which engages in a corresponding prismatic recess which is arranged in the fixed base body in the tangential direction.
  • the three adjustment elements can be connected to the adjustable table via a swivel joint with a tangential axis of rotation and to the fixed base body via a spherical surface and a corresponding concave recess as a spatial joint.
  • it is adjustably mounted on the fixed base body
  • the adjustment elements which are composed of several elements, are constructed in a relatively complex manner and have a greater overall height between the adjustable table and the fixed base body; in addition, the concave recesses of the adjustable table must be exactly aligned with the fastening grooves for the leaf springs or with the conical recesses or the prismatic recesses in the solid base body, which necessitates a higher production outlay.
  • the invention is based on the object of making the adjusting elements simpler and with a smaller overall height and increasing the rigidity of the adjustable table on a table which is adjustable in height on a fixed base body.
  • the advantages achieved with the invention consist in particular in that the simpler construction of the adjustment elements enables cheaper manufacture and assembly and the smaller height of the adjustment elements enables a smaller distance between the adjustable table and the fixed base body.
  • This adjustable table is not subject to wear due to point contact, is not decentered and / or twisted neither when setting nor with temperature changes and has a statically determined support and increased rigidity.
  • FIG. 1 shows a table T1, which is adjustably mounted on a fixed base body G1, in a side view and in FIG. 2 in a plan view.
  • the adjustable table T1 has three identical adjustment elements V1, which are rotationally symmetrical to the center, on its periphery, which are fixedly connected on the one hand to the adjustable table T1 and, on the other hand, via a spatial joint to the fixed base body G1.
  • Each adjusting element V1 consists of a threaded bolt GB1, at the one end of which a convex spherical surface FV1 and at the other end of which a slot S are provided for engagement by an adjusting tool, not shown.
  • the threaded bolts GB1 are located in continuous threaded holes BB1, which are provided in the adjustable table T1 rotationally symmetrically to its center on the periphery; this engagement of the threaded bolt GB1 in the threaded bore BB1 forms the fixed connection between the adjusting element V1 and the adjustable table T1.
  • each adjustment element V1 has a disk-shaped support element SE1.
  • the convex spherical surfaces FV1 of the three threaded bolts GB1 each engage in concave spherical surfaces FS1 of the three disk-shaped support elements SE1, which rest on the surface OG1 of the solid base body G1 and are freely displaceable in the plane of this surface OG1.
  • the convex spherical surface FV1 of the adjusting element V1 and the concave spherical surface FS1 of the support element SE1 form the spatial joint between the adjusting element V1 and the fixed base body G1.
  • the free displaceability of the support elements SE1 perpendicular to the adjustment direction of the adjustment elements V1 on the surface OG1 of the fixed base body G1 precludes the action of constraining forces on the adjustable table T1 after its adjustment, so that the flatness of its surface OT1 for receiving instruments or measuring devices is not impaired becomes.
  • a tension spring Z is provided, which is fastened in any manner in the fixed base body G1, projects through a bore BT in the adjustable table T1 and is held by means of a holding pin HS spanning the bore BT.
  • the tension springs Z are intended to increase the contact force of the adjustable table T1 in addition to its own weight.
  • the fixed connection of the adjusting elements V1 with the adjustable table T1 increases the rigidity of the adjustable table T1, which is further increased by the provision of the tension springs Z, as a result of which any thread play between the threaded bolts GB1 of the adjusting elements V1 and the threaded holes BB1 of the adjustable table T1 is further reduced.
  • the struts ST1 each have a flexible joint BG1 with axes of rotation running parallel to the surface OG1 of the fixed base body G1 at both ends in order to enable the distance and / or the angular position of the adjustable table T1 with respect to the fixed base body G1 to be set without any constraining forces.
  • the three struts ST1 are each formed by a leaf spring, which have lateral cross-sectional reductions as bending joints BG1 at both ends; in a manner not shown, the struts ST1 can also consist of flat bars.
  • FIG. 3 shows an adjustment element V2 in a longitudinal section as a preferred variant of the adjustment element V1 according to FIG. 1.
  • Each of these three adjusting elements V2 consists of a threaded bolt GB2, at the one end of which a concave spherical surface FV2 and at the other end of which two axially extending depressions E are provided symmetrically to the central axis.
  • the threaded bolt GB2 is in one continuous threaded bore BB2, three of which are provided in the adjustable table T2 rotationally symmetrical to its center on the periphery; this engagement of the threaded bolt GB2 in the threaded bore BB2 forms the fixed connection between the adjusting element V2 and the adjustable table T2.
  • each adjustment element V2 has a disk-shaped support element SE2.
  • the concave spherical surfaces FV2 of the three threaded bolts GB2 each engage in convex spherical surfaces FS2 of the three disk-shaped support elements SE2, which rest on the surface OG2 of the solid base body G2 and are freely displaceable in the plane of this surface OG2.
  • the concave spherical surface FV2 of the adjusting element V2 and the convex spherical surface FS2 of the support element SE2 form the spatial joint between the adjusting element V2 and the fixed base body G2.
  • the adjusting element V2 also contains a threaded washer GS, which is arranged at a distance above the threaded bolt GB2 in the threaded bore BB2 of the adjustable table T2 and has two axially running bores B symmetrical to the central axis, which are aligned with the depressions E of the threaded bolt GB2.
  • Driver pins MS engage in the lower halves of the two bores B of the threaded washer GS and in the depressions E of the threaded bolt GB2 for mutual coupling.
  • the upper halves of the two bores B of the threaded washer GS are used to engage an adjusting tool, not shown, for adjusting the distance and / or the angular position of the adjustable table T2 with respect to the fixed base body G2; the free displaceability of the support elements SE2 perpendicular to the adjustment direction of the adjustment elements V2 on the surface OG2 of the fixed base body G2 exclude the action of constraining forces on the adjustable table T2 after its adjustment, so that the flatness of its surface OT2 is not impaired for receiving instruments or measuring devices.
  • the threaded washer GS also has a center bore MBS, the threaded bolt GB2 a center bore MBB and the support element SE2 a center bore MBE, through which a clamping screw SS engages in a threaded bore R of the fixed base body G2.
  • the clamping screw SS is tightened so that any thread play between the threaded washer GS and the threaded hole BB2 and between the threaded bolt GB2 and the threaded hole BB2 of the adjustable table T2 is switched off.
  • the fixed connection of the adjusting elements V2 with the adjustable table T2 increases the rigidity of the adjustable table T2, which is further increased by tightening the tensioning screws SS.
  • the diameter of the center bore MBS of the threaded washer GS, the center bore MBB of the threaded bolt GB2 and the center bore MBE of the support element SE2 are dimensioned so that the inner walls of these center bores MBS, MBB, MBE neither when adjusting the adjustable table T2 nor after tightening the clamping screw SS be in contact with the shaft of the clamping screw SS.
  • the tensioning screws SS according to FIG. 3 replace the tension springs Z according to FIG. 1.
  • the struts ST2 each have a flexible joint BG2 with axes of rotation running parallel to the surface OG2 of the fixed base body G2, in order to enable the distance and / or the angular position of the adjustable table T2 with respect to the fixed base body G2 to be set without any constraining forces.
  • the three struts ST2 are each formed by a leaf spring, which have lateral cross-sectional reductions as bending joints BG2 at both ends; In a manner not shown, the struts ST2 can also consist of flat bars.
  • the cross-sectional reductions at the two ends of the struts ST1, ST2 also each allow angular mobility of the struts ST1, ST2 with an axis of rotation perpendicular to the surface OG2 of the solid base body G2 and about an axis of rotation in the longitudinal extent of the struts ST1, ST2.
  • the three adjustment elements V1, V2 can be fixedly connected in a kinematic reversal to the fixed base body G1, G2 and to the adjustable table T1, T2 via a spatial Be articulated, the spatial articulation being connected to the underside UT1, UT2 of the adjustable table T1, T2 perpendicularly to the adjustment direction of the adjustment elements V1, V2.
  • more than three adjustment elements can also be provided between the fixed base body and the adjustable table; the adjustable table can have any shape.

Landscapes

  • Details Of Measuring And Other Instruments (AREA)
  • Machine Tool Units (AREA)
  • Pivots And Pivotal Connections (AREA)
EP87111625A 1986-10-22 1987-08-11 Ein auf einem festen Grundkörper in der Höhe einstellbar gelagerter Tisch Expired - Lifetime EP0264561B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3635884 1986-10-22
DE19863635884 DE3635884A1 (de) 1986-10-22 1986-10-22 Ein auf einem festen grundkoerper einstellbar gelagerter tisch

Publications (3)

Publication Number Publication Date
EP0264561A2 EP0264561A2 (de) 1988-04-27
EP0264561A3 EP0264561A3 (en) 1989-09-06
EP0264561B1 true EP0264561B1 (de) 1993-07-21

Family

ID=6312209

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87111625A Expired - Lifetime EP0264561B1 (de) 1986-10-22 1987-08-11 Ein auf einem festen Grundkörper in der Höhe einstellbar gelagerter Tisch

Country Status (2)

Country Link
EP (1) EP0264561B1 (ko)
DE (2) DE3635884A1 (ko)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106205741A (zh) * 2016-07-25 2016-12-07 成都市昌宝顺金属制品有限公司 一种角度可调的设备支撑台结构

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9011381U1 (de) * 1990-08-03 1990-11-29 Mesacon Gesellschaft für Meßtechnik mbH, 4600 Dortmund Optisches Gerät, insbesondere zur Messung der Geschwindigkeit einer bewegten Oberfläche mittels eines Lasermeßlichtstrahls
DE4226027A1 (de) * 1992-08-06 1994-02-10 Arnold & Richter Kg Baugruppe, insbesondere optische Baugruppe mit einer Spiegel- oder Prismenanordnung
DE19804606A1 (de) * 1997-10-27 1999-04-29 Lederer Stieve Stativ für Lasernivelliergeräte
CN110440844A (zh) * 2019-07-04 2019-11-12 安徽蓝德正华电子有限公司 一种仪表抽检用快速固定装置

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2461190A (en) * 1945-08-04 1949-02-08 Eastman Kodak Co Adjustable mount for optical elements
US3577791A (en) * 1969-01-22 1971-05-04 Conduction Corp Control system
US3897139A (en) * 1974-04-15 1975-07-29 United Aircraft Corp Adjustable mounting apparatus
FR2279019A1 (fr) * 1974-07-16 1976-02-13 Thomson Csf Plateau support de positionnement a rotation pas a pas
DE2813407A1 (de) * 1978-03-29 1979-10-04 Heidenhain Gmbh Dr Johannes Einstellbarer tisch
US4244547A (en) * 1978-12-20 1981-01-13 Keuffel & Esser Company Theodolite leveling means
DD156637A1 (de) * 1981-03-02 1982-09-08 Werner Freund Vorrichtung zur veraenderung der neigung eines geraeteteils
JPS58211112A (ja) * 1982-06-02 1983-12-08 Hitachi Ltd 姿勢調整装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106205741A (zh) * 2016-07-25 2016-12-07 成都市昌宝顺金属制品有限公司 一种角度可调的设备支撑台结构

Also Published As

Publication number Publication date
EP0264561A3 (en) 1989-09-06
DE3635884C2 (ko) 1990-11-15
DE3635884A1 (de) 1988-05-05
DE3786634D1 (de) 1993-08-26
EP0264561A2 (de) 1988-04-27

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