RU2085362C1 - Screw driving tool - Google Patents

Abstract

FIELD: mechanical engineering; assembling (disassembling) of parts with threaded joints. SUBSTANCE: output shaft of drive and spindle are mechanically coupled through disks during operating by means of adjustable clutching device made in form of spring-loaded pins radially arranged in one of disks and spring-loaded floating bushing with bearing installed opposite to pins for acting onto pins. Recesses are made in other disk at spindle side. EFFECT: enlarged operating capabilities. 2 cl, 1 dwg

Description

 The invention relates to hand-held portable tools designed for assembly (disassembly) of compounds, and can be used for mechanization of installation and assembly work in all sectors of the economy.

 Known thread-wrapping tool comprising a housing, a drive with an output shaft, a spindle located in the housing with a working body at one end and a mechanism for transmitting rotation from the output shaft to the spindle, including opposite to each other mounted on the free ends of the output shaft and spindle and kinematically connected disks and handle .

 A well-known decision is made as a prototype.

 The technical result of the invention to increase the reliability and ease of use in a limited space.

 The drawing shows a thread-wrapping tool in section.

 The tool contains a drive 1 and a detachable housing 2, in which the drive shaft 3 and the spindle 4 are placed with the disks 5 and 6 oppositely mounted on them. , and on the disk 6 there are (at least two) stepped channels 8 located on the same radius as the recesses 7 of the disk 5. In the channels 8 there are fingers 9, spring-loaded with springs 10, which can interact with the bearing 11 mounted in the floating sleeve 12. All this is interlocking stroystvo. Between the floating sleeve 12 and the floating washer 13, a spring 14 is installed on the spindle shaft 4, and a nut 15 is screwed on the housing 2, which acts as a regulator of the coupling device when the flange 16 is applied to the washer 13. A calibration scale (not shown) is applied on the nut 15. The latches 17, pivotally mounted on the housing 2, are spring-loaded with springs 18 and serve to hold the sleeve 12 in the working position, acting on the collar 19, when the specified torque is reached. The latches 17 can interact with its drive (not shown) when the jaws 20 are mechanically withdrawn from the shoulder 19 and the sleeve 12 to the working position, as well as with a signal device (not shown) when the spindle 4 leaves the working position.

 Thread-wrapping tool works as follows.

 In the initial position, the latches 17 with their lips 20 hold the floating sleeve 12 in the depressed position, the fingers 9 come out of the recesses 7 of the disk 5, the spring 14 is compressed. By turning the nut 15, the tightening force is set, and the tool with the working body 21 on the acquired nut (bolt) and the jaws 20 of the latches 17 are removed from the collars 19. The spring 14 will advance the floating sleeve 12 and it, in turn, will press the bearing 11 on the fingers 9, which will go into the recesses 7 of the disk 5. Turn on the drive 1. The tool wraps (unscrews) the screw connection. At the end of the screwing (the tightening force exceeds the set), the disk 6 will stop, the fingers 9 will come out of the recesses 7 under the action of the disk 5 and wring out the floating sleeve 12, and the latches 17 will fix it in the idle position. The transmission of rotation from the drive shaft 3 to the spindle 4 is stopped. The latch 17 acts on the switch signal device (not shown) and gives a signal about the end of the clamp. Move the tool to the next screw connection. The cycle repeats.

Claims (2)

 1. A thread-wrapping tool comprising a housing, a drive with an output shaft, a spindle located in the housing with a working body at one end and a rotation transmission mechanism from the output shaft to the spindle, including opposed to each other mounted on the free ends of the shaft and spindle kinematically connected discs, characterized the fact that on the side surface of the shaft disk facing the spindle disk there are made recesses uniformly spaced around the circumference, and step channels in the spindle disk at the same radius, the transmission mechanism rotates Iya is equipped with a switching device made in the form of spring-loaded floating sleeves, fingers and clamps, with the fingers placed in the stepped channels of the spindle disk, the floating sleeve mounted on the spindle side and equipped with a bearing mounted opposite the fingers with the possibility of impact on them, and the clamps are pivotally mounted on housing with the ability to interact with a floating sleeve.  2. The tool according to claim 1, characterized in that the switching device is made adjustable.