JPS56126707A - Measuring device for angle - Google Patents

Measuring device for angle

Info

Publication number
JPS56126707A
JPS56126707A JP3133680A JP3133680A JPS56126707A JP S56126707 A JPS56126707 A JP S56126707A JP 3133680 A JP3133680 A JP 3133680A JP 3133680 A JP3133680 A JP 3133680A JP S56126707 A JPS56126707 A JP S56126707A
Authority
JP
Japan
Prior art keywords
horizontal shaft
precision
inner ring
rotation
ball bearing
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
Application number
JP3133680A
Other languages
Japanese (ja)
Other versions
JPS6313126B2 (en
Inventor
Satoo Iwafune
Yuji Kobayashi
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.)
Tokyo Optical Co Ltd
Original Assignee
Tokyo Optical Co Ltd
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 Tokyo Optical Co Ltd filed Critical Tokyo Optical Co Ltd
Priority to JP3133680A priority Critical patent/JPS56126707A/en
Publication of JPS56126707A publication Critical patent/JPS56126707A/en
Priority to US06/486,871 priority patent/US4455758A/en
Publication of JPS6313126B2 publication Critical patent/JPS6313126B2/ja
Granted legal-status Critical Current

Links

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
    • F16C25/00—Bearings for exclusively rotary movement adjustable for wear or play
    • F16C25/06—Ball or roller bearings
    • F16C25/08—Ball or roller bearings self-adjusting
    • F16C25/083—Ball or roller bearings self-adjusting with resilient means acting axially on a race ring to preload the bearing
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C1/00—Measuring angles
    • G01C1/02—Theodolites

Abstract

PURPOSE:To unnecessitate extremely high precision of the engagement surface of a horizontal shaft by fitting the horizontal shaft to the inner ring of a ball bearing having outer and inner rings, supporting the outer ring by a supporting frame and thereby raising the precision of rotation. CONSTITUTION:A telescope tube 1 containing an optical system for collimation is provided with the horizontal shaft 2 projected in the lateral direction and the tube 1 is supported at this horizontal shaft 2 by the supporting frame 7 through the intermediary of ball bearings 3 and 4. The ball bearing 3 has the inner ring 5 and the outer ring 6 and one end of the horizontal shaft is engaged with the inner ring 5, while the outer ring 6 is fitted to the supporting frame 7. Since the inner ring of the ball bearing can be made a reference surface for rotation by this constitution, the precision of rotation is improved, and thus the precision of the engaging surface of the horizontal shaft is not required to be extremely high.
JP3133680A 1980-03-12 1980-03-12 Measuring device for angle Granted JPS56126707A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP3133680A JPS56126707A (en) 1980-03-12 1980-03-12 Measuring device for angle
US06/486,871 US4455758A (en) 1980-03-12 1983-04-20 Bearing means for angle measuring instruments

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3133680A JPS56126707A (en) 1980-03-12 1980-03-12 Measuring device for angle

Publications (2)

Publication Number Publication Date
JPS56126707A true JPS56126707A (en) 1981-10-05
JPS6313126B2 JPS6313126B2 (en) 1988-03-24

Family

ID=12328400

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3133680A Granted JPS56126707A (en) 1980-03-12 1980-03-12 Measuring device for angle

Country Status (1)

Country Link
JP (1) JPS56126707A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009526209A (en) * 2006-02-08 2009-07-16 ライカ・ゲオジステームス・アクチェンゲゼルシャフト Angle measuring instrument

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5347455U (en) * 1976-09-27 1978-04-21

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5260348A (en) * 1975-11-12 1977-05-18 Nougiyou Doboku Shikenjiyouchi Wave availing pump

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5347455U (en) * 1976-09-27 1978-04-21

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009526209A (en) * 2006-02-08 2009-07-16 ライカ・ゲオジステームス・アクチェンゲゼルシャフト Angle measuring instrument

Also Published As

Publication number Publication date
JPS6313126B2 (en) 1988-03-24

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