RU1798101C - Spindle of multispindle nut runner - Google Patents

Abstract

FIELD OF THE INVENTION The invention relates to a mechanized tool for assembling threaded joints in materials, automotive and other construction industries. The purpose of the invention is to increase the accuracy of puffs. The spindle comprises a housing located inside the drive shaft, spring driven shaft with trapezoidal thread, on which a key nozzle is installed. A cam clutch is installed between the drive and driven shafts, consisting of a leading coupling half with end saw-shaped cams mounted axially movable, an intermediate element with cams, reciprocal saw-like cams, on one end and rectangular cams on the other for coupling with cams of the driven coupling half, which is mounted on the splines and connected by a torsion spring to the intermediate element, and a Compression spring is installed between the end of the driven shaft and the nozzle. 4 ill.

Description

The invention relates to a mechanized tool and can be used in iw "aiwH; HOCT milks for assembling threaded joints;

, The purpose of the invention is to increase the accuracy of the puff by means of a GATENI on the housing of an even torsional torque created by the dynamics of the drive. . . The invention is illustrated by the following:. Same name:; {; : -V v:, ;; / -. /: l: -. -. / Г-. The spindle of a multi-pin individual nut wrench is shown in the initial position, with the clutch disengaged; Fig. 2 also, at the time of completion of the screwing; on fmg.Z - pulling the cams of the drive coupling and the intermediate element at the beginning of screwing; in Fig. 4, the location of the key nozzle and the compression spring.

The multi-spindle wrench spindle comprises a housing 1, a drive shaft 2.

spring-driven 3 driven shaft 4, with a trapezoidal thread 5 at the end, a key nozzle 6 mounted thereon with a reciprocal trapezoidal thread, a cam clutch consisting of a driving coupling half 7 with end sawtooth cams 8 mounted on the driven shaft 4 with the possibility of axial movement together with it, an intermediate element 9 with mating sawtooth cams on one end and rectangular cams MOT on the other for engaging with the mating cams of the driven coupling half 11. The driven coupling half 11 is installed in the slots 12 of the housing 1. kinematically associated with the key 6 and the nozzle is connected to an intermediate element 9, the torsion spring 13. In the cavity of the nozzle 6 is mounted key tare spring 14, which stroke corresponds to a predetermined time of tightening the threaded joint.

H) 00

ABOUT

The multi-spindle wrench spindle operates as follows.

A screwdriver unit (not shown) with rotating key spindle nozzles is connected to the product. The key nozzle 6 is put on the pre-baited nut of the threaded connection and, when the unit is further moved through a rigid calibrated spring 14 and the driven shaft 4 compresses the spring 3. The coupling halves 7, 11 and the intermediate element 9 are held at a predetermined distance from the driven coupling half 11 by a torsion spring 13, also move together with the driven shaft 4, while the distance between them remains constant and the intermediate element 9 and the torsion spring 13 of the driven half coupling connected to it, fixed in the splines 12 of the housing 1, do not rotate with . The nut is tightened until the end of the product touches the surface of the product, after which the key nozzle stops (subsequently turning by the tightening angle constant for this threaded connection). The torque on the key nozzle increases and the drive shaft 2, turning relative to it along the trapezoidal thread 5, compresses the calibrated spring 14, transferring additional torque to the key nozzle and nut. The driving coupling half 7 engages with the sawtooth teeth 8 with the counter teeth of the intermediate element 9 and starts to rotate it by twisting and compressing the torsion spring 13. The sawtooth teeth in this case are fully engaged. After compressing the calibrated spring 14 by the calculated value corresponding to the specified tightening torque, the rectangular cams 10 of the intermediate element 9 and the known half coupling enter the full engagement

5

0

5

0

5

0

laziness, because from the moment the rotation began, the rectangular cams of the intermediate element were relative to the cams of the driven half coupling in a predetermined angular position determined by the trapezoidal screw. The kinematic chain of the drive stops and turns off without transmitting its dynamics to the key nozzle and nut. After removing the key nozzle from the nut, the intermediate element 9 under the influence of the spring 13, the key nozzle b under the influence of the spring 14 and the driven shaft 4 under the influence of the spring 3 return to their original position.

The proposed spindle allows damping the excess torque created by the dynamics of the drive and increasing the accuracy of the tightening of threaded joints.

Claims (1)

SUMMARY OF THE INVENTION A spindle of a multi-spindle nutrunner comprising a housing, a drive shaft, a spring-loaded driven shaft with a key nozzle, a cam clutch consisting of a drive coupling with end saw-shaped cams mounted on slots on the inner surface with the possibility of axial movement, an intermediate element with saw-shaped cams one end and rectangular cams on the other for engagement with the cams of the driving and driven coupling halves, including and so that, in order to increase the accuracy of the tightening, the driven half-coupling is connected to the intermediate element by a torsion spring so that their rectangular cams in the disengaged state are located one above the other, the key nozzle is mounted on the driven shaft by means of a thread, and a compression spring is installed between the end of the driven shaft and the key nozzle. , Editor Compiled by E. Agantayev Shchё.ch Tehred M. Morgenthal Corrector M. Maximisinöc