IT1261125B - Tightening bolt with accurate preloading and tightening procedure using such bolts - Google Patents
Tightening bolt with accurate preloading and tightening procedure using such boltsInfo
- Publication number
- IT1261125B IT1261125B ITTO930878A ITTO930878A IT1261125B IT 1261125 B IT1261125 B IT 1261125B IT TO930878 A ITTO930878 A IT TO930878A IT TO930878 A ITTO930878 A IT TO930878A IT 1261125 B IT1261125 B IT 1261125B
- Authority
- IT
- Italy
- Prior art keywords
- tightening
- bolt
- head
- preloading
- bolts
- Prior art date
Links
Landscapes
- Clamps And Clips (AREA)
- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
Abstract
A tightening bolt with accurate preloading has a first threaded portion 1B adjacent to its free end and a second threaded portion 1A of greater diameter and lesser pitch adjacent to or corresponding to its head T. A ring 2 is screwed onto the portion of greater diameter and in the tightened condition this rests against one of the two members 3, 4 which are being connected. In this condition head T is at a distance from its supporting plane, so the friction between the head and the supporting plane does not affect the link between the tightening torque and the tension stress produced in bolt 1. Having then determined the amount of friction on the threads by partial tightening, it is possible to determine the final tightening torque so as to ensure that the bolt can be rotated through the necessary angle to ensure the desired preloading on the shank of the bolt. <IMAGE>
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITTO930878A IT1261125B (en) | 1993-11-23 | 1993-11-23 | Tightening bolt with accurate preloading and tightening procedure using such bolts |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITTO930878A IT1261125B (en) | 1993-11-23 | 1993-11-23 | Tightening bolt with accurate preloading and tightening procedure using such bolts |
Publications (3)
Publication Number | Publication Date |
---|---|
ITTO930878A0 ITTO930878A0 (en) | 1993-11-23 |
ITTO930878A1 ITTO930878A1 (en) | 1995-05-23 |
IT1261125B true IT1261125B (en) | 1996-05-09 |
Family
ID=11411889
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ITTO930878A IT1261125B (en) | 1993-11-23 | 1993-11-23 | Tightening bolt with accurate preloading and tightening procedure using such bolts |
Country Status (1)
Country | Link |
---|---|
IT (1) | IT1261125B (en) |
-
1993
- 1993-11-23 IT ITTO930878A patent/IT1261125B/en active IP Right Grant
Also Published As
Publication number | Publication date |
---|---|
ITTO930878A1 (en) | 1995-05-23 |
ITTO930878A0 (en) | 1993-11-23 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
0001 | Granted | ||
TA | Fee payment date (situation as of event date), data collected since 19931001 |
Effective date: 19971107 |