US3608364A - Adjusting arrangement - Google Patents

Adjusting arrangement Download PDF

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Publication number
US3608364A
US3608364A US742372A US3608364DA US3608364A US 3608364 A US3608364 A US 3608364A US 742372 A US742372 A US 742372A US 3608364D A US3608364D A US 3608364DA US 3608364 A US3608364 A US 3608364A
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US
United States
Prior art keywords
gap
intermediate section
end sections
structural member
wall portions
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
US742372A
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English (en)
Inventor
Karl Baur
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.)
Rheinmetall Air Defence AG
Rheinmetall Industrie AG
Original Assignee
Oerlikon Contraves AG
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 Oerlikon Contraves AG filed Critical Oerlikon Contraves AG
Application granted granted Critical
Publication of US3608364A publication Critical patent/US3608364A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D11/00—Component parts of measuring arrangements not specially adapted for a specific variable
    • G01D11/30—Supports specially adapted for an instrument; Supports specially adapted for a set of instruments

Definitions

  • a stressable structural member has two spaced end sections an intermediate section integral with the end sections and split in the direction from one to the other of the end sections so that it is provided with a center gap of substantially lenticular cross-sectional configuration.
  • a stressing arrangement serves to compress the intermediate section transversely of this gap to varying degrees, whereby the longitudinal extension of the member increases as the intermediate section is progressively compressed and decreases as the intermediate section is progressively relieved of compressive stress transversely of the gap.
  • the present invention relates to an adjusting arrangement in general, and more particularly to an adjusting arrangement for effecting precision length adjustments.
  • a more particular object of the invention is to provide an adjusting arrangement capable of providing precise, and precisely reproducible length variations of structural members, which length variations are of small but precisely adjustable magnitude.
  • one feature of my invention resides in providing, in an arrangement of the type here under discussion, a stressable structural member having two end sections which are spaced in a predetermined direction and a middle section which includes an intermediate portion between and integral at its opposite ends with the end sections.
  • a stressing portion is juxtaposed with this intermediate portion and rigid with the aforementioned opposite ends thereof, and this stressing portion defines with the intermediate portion a gap having a given maximum width transversely of the aforementioned predetermined direction.
  • Stressing means is associated with the intermediate portion and with the stressing portion and is operative for varying the width of the gap to thereby obtain concomitant variations in the distance between the aforementioned end sections.
  • the stressable structural member which may obvious- 1y be of various different configurations ranging for example from a rod to a flat or annular wall, may in a currently preferred embodiment of my invention be split in its middle section.
  • the middle section intermediate the end sections may be split, advantageously in such a manner as to obtain two portions which bulge in directions oppositely away from each other and symmetrically to the plane of symmetry with the intersecting end sections and the middle section. I thus obtain between these portions a gap of substantially lenticular crosssectional configuration.
  • I cause small changes in the distance between the end sections of the structural member, that is I vary the longitudinal extension of the structural member.
  • the extent of longitudinal variation will of course depend on the extent to which I compress the opposite portions towards one another, and to reverse the thus-obtained elongation of the structural member I need merely relax this compression.
  • the drawing is assumed to illustrate a supporting arrangement for a precision clinometer, for example a phototheodolite.
  • the measuring instrument itself is not illustrated because it is not essential for an understanding of the invention.
  • Reference numeral 1 in the drawing designates a base or supporting ring which is suitably mounted on a base, for example a non-illustrated pedestal.
  • a second ring mount 2 overlies the supporting ring 1 and its distance from the latter is adjustable, as is its horizontal alignment by means of three wedge members 3 which are interposed between the ring mounts 1 and 2 at equi-angularly spaced locations, that is at locations which are offset circumferentially from one another by
  • the wedge members 3 are moved in the direction of the arrows P3 by suitable non-illustrated drive arrangements, for instance screw spindles or the like.
  • This effects adjustment of the member 2 in the direction of the arrows P2, and it is obvious that horizontal adjustment is obtained by moving only certain of the members 3, or by moving the the members 3 to different extents.
  • the drive arrangements for the members 3 may be suitably constructed, for instance so that if they are operated by hand a full turn of the screw spindle may effect a tilting of the ring member 2 to a given extent, for instance 12 seconds of arc.
  • the drive arrangements for the members 3 may be suitably constructed, for instance so that if they are operated by hand a full turn of the screw spindle may effect a tilting of the ring member 2 to a given extent, for instance 12 seconds of arc.
  • the ring member 2 supports a cylindrical member 4 having an upper edge face whose plane LE is identified by the chain line and on which a precision measuring device, such as a phototheodolite or the like, is supported.
  • a precision measuring device such as a phototheodolite or the like
  • the member 4 is provided in this embodiment with three downwardly projecting legs or supporting portions 41 (only two shown) which rest on the ring member 2 above the wedge members 3.
  • Strong springbiassing means is provided for biassing the member 4 downwardly against the ring 2, and thus against the ring 1.
  • the member 4 is provided with the illustrated circular flange 5, having secured thereto radially outwardly projecting bolts 51 which extend into openings 42 which are provided in the member 4 upwardly above the legs 41.
  • Rods 54 are secured with their lower ends 55 to the ring member 2, or if desired to the ring member 1, and their upper ends extend through the flange 5 and carry stacks 52 of dished springs which can be compressed in a biassing sense, that is in a sense causing the member 4 to be pressed downwardly against the members 1 and 2, by tightening the nuts 53 screwed onto the upper free ends of the rods 54. It will be appreciated that a suitable number of such rods will be provided. This, however, is also not novel and is illustrated only by way of example and for better understanding of the invention.
  • the member 4 is provided upwardly above the legs 41, and thus at three equi-angularly spaced locations with a slot in its intermediate section, that is between the upper edge face and the respective leg 41.
  • the slotted regions I provide two wall portions 44 and 45 which are respectively deformed radially outwardly and radially inwardly so as to bulge in the manner illustrated, and they define between themselves a lenticularly-configurated gap 46.
  • any one of the wall portions of the member 4 which is thus configurated that is a portion extending from the respective leg 41 to the upper edge face above this leg 41, may be in itself considered the equivalent of an independent structural member provided with my novel invention.
  • three such structural members are integrated as part of the member 4.
  • a rod or other member similarly slotted comes within the scope of the present invention.
  • the member 4 may be provided in form of a steel casting, if desired, with the wall portions 44, 45 and the lenticular gap therebetween being provided during the casting operation.
  • the wall portions 44 and 45 of the illustrated embodiment are pro vided with centrally located registering radial bores 47, and through each set of these bores a spindle 6 (one illustrated) extends.
  • the spindle 6 has a head 61 which engages the outer side of the wall portion 44 and a free end which projects inwardly through the wall portion 45 is provided with a fine-adjustment screw thread 62.
  • a sleeve-shaped nut member 63 is threaded onto the screw thread 62 and bears upon the wall portion 45 via a thrust 4 bearing 64 through which it transmits stresses in its axial direction to the wall portion 45 through the intermediary of a ring member 65.
  • the nut member 63 constitutes the drive wheel of a multi-stage reduction gear of which I have illustrated only the gear wheels 66, 67.
  • the specific construction of such a gear may be selected as desired. It Will for instance be understood that the gear may be driven via a servomotor, or that it may be operated by hand. It is possible for example to construct the reduction gear that there is a reduction of 123,200 between the (non-illustrated) actuating means for the reduction gear and the sleeve-shaped nut member 63.
  • this gear ratio is given only by way of example and is by no means to be considered limiting.
  • the gear reduction ratio and the pitch of the screw thread 62 for the nut means 63 may be so selected that a given number of turns of the (non-illustrated) drive or actuating member for the reduction gear-for example twelve such full turnsresult in a tilting of the upper edge face of the member 4, that is of the plane LE of this upper edge face, with respect to the two horizontal plane by one second of arc.
  • the arrangement can be made so precise that adjustments on the order of 0.1 second of arc can still be obtained with great precision and can be reproduced at will.
  • the invention can be embodied in a differently configurated structural member and can be used for adjusting a positioning or supporting mechanism for a tool in a machine, or for other purposes.
  • the invention is applicable not only to the slotted configuration shown by way of example in the drawing, but that it is also conceivable to construct a structural member in such a manner as to for example eliminate one of the wall portions 44 or 45. If, for example, it is assumed that the structural member were to comprise only the upper and lower sections and for example the wall portion 44 with the Wall portion 45 not being integral as shown, then such a wall portion corresponding to the wall portion 45 could be separately provided and for example Welded to the structural member. This would of course result in a construction whose operation would be the same as what has been described above.
  • a support structure capable of providing extremely accurate level adjustment comprising an annular support; a cylindrical structural member of elastically deformable material mounted on said support with its longitudinal axis in upright orientation and having an upper axial end face, said cylindrical structural member having a circumferential Wall integrally provided at least at three equiangularly spaced locations with respective pairs of juxtaposed, laterally spaced wall portions and the wall portions of each pair each having a top and bottom end and being so formed as to be integral with each other at the respective ends, thereby defining between said juxtaposed wall portions of each pair a respective gap; and a force applying means provided at each of said gaps and operatively connected to the respective juxtaposed wall portions for applying a force in a direction across the respective gap and transverse to the longitudinal axis of said cylindrical structural element so as to cause the respective juxtaposed wall portions to elastically deform when force is applied, thereby inducing a stress in the elastically deformable material causing said material to yield in elastic strain deformation, whereby to obtain precise adjustment of said upper upper
  • said force applying means comprising screw-threaded means extending across said gaps connecting said wall portions and being operative relatively for deflecting the latter across the respective gap to lesser or greater extents at the will of an operator and for obtaining lesser or greater adjustments.
  • said force applying means further comprising turning means associated with said nut means and including reduction-gear means for facilitating turning of said nut means.
  • one of said wall portions of each pair being provided with an opening facing the other wall portion
  • said screwthreaded means comprises a bolt extending through said opening and having one end rigid with said other wall portion and an other end projecting outwardly through said opening of said one wall portion; said force applying means further comprising nut means threaded onto said other end and being threadedly displaceable thereon to thereby engage said one wall portion and effect inward deflecting of said Wall portions across the respective gap.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)
  • Body Structure For Vehicles (AREA)
US742372A 1967-07-06 1968-07-03 Adjusting arrangement Expired - Lifetime US3608364A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH957467A CH465986A (de) 1967-07-06 1967-07-06 Feinstellvorrichtung

Publications (1)

Publication Number Publication Date
US3608364A true US3608364A (en) 1971-09-28

Family

ID=4353405

Family Applications (1)

Application Number Title Priority Date Filing Date
US742372A Expired - Lifetime US3608364A (en) 1967-07-06 1968-07-03 Adjusting arrangement

Country Status (10)

Country Link
US (1) US3608364A (cs)
JP (1) JPS4834021B1 (cs)
AT (1) AT285972B (cs)
CH (1) CH465986A (cs)
DE (1) DE1772521B1 (cs)
ES (1) ES355702A1 (cs)
FR (1) FR1574309A (cs)
GB (1) GB1164075A (cs)
NL (1) NL6807680A (cs)
SE (1) SE328418B (cs)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0033768B1 (de) * 1980-02-01 1984-05-23 Contraves Ag Flugbahnvermessungs- und Beobachtungstheodolit

Also Published As

Publication number Publication date
CH465986A (de) 1968-11-30
SE328418B (cs) 1970-09-14
ES355702A1 (es) 1970-03-01
JPS4834021B1 (cs) 1973-10-18
NL6807680A (cs) 1969-01-08
DE1772521B1 (de) 1971-12-02
AT285972B (de) 1970-11-25
FR1574309A (cs) 1969-07-11
GB1164075A (en) 1969-09-10

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