SU1428847A1 - Screw-type mechanism - Google Patents

Description

(21) l 3 657 / 25-27

(22) 08/25/86

(46) 10/07/88. Bup. Number 37

(72) S.A. Ershov, V.M.Holovko

and V.D. Agafonov

(53) 621.88.5 (088.8)

(56) Artobolevsky I.I. Mechanisms in modern technology. M .: Science, 1979, vol. 3, p. 382, fig. 2117.

(54) SCREW MECHANISM

(57) The invention relates to a mass structure, to screw mechanisms. The goal is to ensure reliable stopping. The screw mechanism contains

body 3 with a differential nut 2 installed in it and screw 1 placed in its threaded bore. At the ends of the nut, outer and outer ring 4 and 5 annular grooves are made. The end parts with annular grooves are separated from the middle part of the nut by 2 radial slits, forming the inner 8 and outer 9 stop portions. The locking sections of the clamped screw 12, passed through the hole 10. This ensures the simultaneous locking of the two threaded pairs. 1 il.

/ g

(L

four

GO 00

oo

four

eleven

The invention relates to mechanical engineering and can be used in devices for adjusting the axial position of a non-rotating screw with its locking after it; for example, in the mechanisms for fixing the rolling stock to install the test object on the power rods in a power-measuring installation.

The aim of the invention is to ensure the reliability of locking the screw mechanism.

The drawing shows a screw mechanism.

The screw mechanism contains a non-rotating screw 1 placed in the threaded bore of the differential nut 2. The nut 2 is made with an external

25

35

, threaded and installed in the threaded from -20. ki At the same time, due to an increase in the body trim 3, at the ends of the nut 2, the outer grooves 4 and 5 internally 5 have annular grooves, and the diameter of the inner morning groove 4 is larger than the outer thread diameter of the screw 1, and the outer groove 5 is smaller than the inner diameter of the hole of the hole cor- 3. The end parts of the nut 2 with g annular grooves 4 and 5 are separated from its average cha: STI radial ree mn 6 and 7, forming the inner 8 and outer 9 locking portions. In the radial section of the gitsi slot, parallel to its axis, an additional one is made (Hole 10, which has a threaded part 11 on one and locking sections, Nut 2 is provided with a screw 12j in the hole 10 and interacting with its threaded part eleven,

The screw mechanism may not be used; For example, 5 in a force-measuring bench when fastening the slide. Which table is used to install the object on several tangential rods, transmitting axial forces to measuring means; Adjusting the position of the movable stand of the stand is caused by changing the position of the differential nuts on the nrraHrajJs and fixing - by means of stop sections, the rods installed in a certain tangenchal see papozh45

50

The locking section 9 fixes the nut 2 relative to the threaded bore of the housing 3, and the locking section B fixes the screw 1 relative to the nut 2.

Thus, a reliable locking of the screw mechanism in any given position is ensured.

Claims (2)

Invention Formula A screw mechanism comprising a housing with a threaded hole in which a differential nut is installed with a screw disposed in its threaded hole, characterized in that, in order to ensure locking, the inner and outer stop parts of the nut are formed at the ends of the nut and are formed by two radial piercers, accomplished. on the side surface of the nut and annular grooves, each of which is made respectively on the outer surface of the nut from one of its ends with a diameter smaller than the internal diameter of the body thread, and on (its inner surface from the other end with a diameter greater than the external diameter of the screw thread The nut is equipped with a clamping screw, and in the zone of its razdial cuts parallel to the axis, an additional hole is made under the mentioned screw. Scientific research institute The boom booms are very demanding on the bench table. When the fixed screw is screwed on 12, the nut 2 is fixed. The axial movement of the screw 1 can be done by rotating the nut 2, for which the external and the nut threaded nuts have different steps, and on the accessible end of the nut I made holes for the installation tool that will turn the nut 2. Fixing screws 1 and nuts 2 in the desired position are produced simultaneously by screwing the clamping screw 12 into the threaded part II-hole 10. The internal 8 and external 9 locking sections close to the middle part of the gay5. five 0. ki. At the same time, by increasing the five 0 The locking section 9 fixes the nut 2 relative to the threaded bore of the housing 3, and the locking section B fixes the screw 1 relative to the nut 2. Thus, a reliable locking of the screw mechanism in any given position is ensured. Invention Formula A screw mechanism comprising a housing with a threaded hole in which a differential nut is installed with a screw disposed in its threaded hole, characterized in that, in order to ensure locking, the inner and outer stop parts of the nut are formed at the ends of the nut and are formed by two radial piercers, accomplished. on the side surface of the nut and annular grooves, each of which is made respectively on the outer surface of the nut from one of its ends with a diameter smaller than the internal diameter of the body thread, and on (its inner surface from the other end with a diameter greater than the external diameter of the screw thread The nut is equipped with a clamping screw, and in the zone of its razdial cuts parallel to the axis, an additional hole is made under the mentioned screw.