SU1523327A1 - Pneumatic angular power nut setter - Google Patents

Abstract

The invention relates to mechanical engineering, namely to hand-held portable mechanized tools, and can be used for mechanization of assembly and assembly work in various industries. The purpose of the invention is to expand the technological capabilities by mechanically screwing the nut of the threaded joint and handing the torque to the required torque. The working head 9 is mounted on the nut of the threaded connection and press the button of the mechanism 4 to turn on the drive 3. Through the drive 3 and the gearbox 5, the rotation is transmitted to the spindle 7 with the working head 9. A high-speed screwing on and tightening the nut of the threaded connection is performed. At the same time, the driven coupling half 10, compressing the spring 18, snaps the beveled surfaces along the teeth of the driving coupling half. The nut lasts until the moment on the spindle 7 exceeds the moment developed by the actuator 3, after which the latter stops. Then the wrench for the handle 2 is turned clockwise at a certain angle. Through the interaction of the working surfaces of the teeth of the half couplings 10 and 13, the driven coupling half 10 is rotated and the moment is transmitted through the splines 8 of the spindle 7 to the working head 9. The nut of the threaded joint is adjusted to the required torque. 2 Il.

Description

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drive 3. Through drive 3 and gear 5, rotation is transmitted to spindle 7 with a working head 9. A high-speed screwing on and tightening of the nut of the threaded joint is carried out. In doing so, knowing the half coupling 10, squeezing the spring 18, snaps the beveled surfaces along the teeth of the half coupling half. The nut lasts until the moment on spindle 7 exceeds the torque developed by drive 3, after which the latter stops. Then the wrench for the handle 2 is turned clockwise at a certain angle. Through the interaction of the working surfaces of the teeth of the half couplings 10 and 13, the driven coupling half 10 is rotated and the moment is transmitted through the splines 8 of the spindle 7 to the working head 9. The nut of the threaded joint is adjusted to the required torque. 2 Il.

The invention relates to mechanical engineering, namely to hand-held portable mechanized tools, and can be used for mechanization of assembly and assembly work in various industries.

The aim of the invention is to expand the technological capabilities by mechanically screwing the nut on the threaded joint and on the hand doto to the required torque.

FIG. 1 shows a wrench, a longitudinal section; in fig. 2 is a view A of FIG. one.

The pneumatic angle wrench includes a housing 1 with a handle 2, a drive 3 with a switching mechanism 4, a two-stage planetary gear 5 connected to it, which by means of a bevel gear 6 is connected with a spindle 7 made with a slot 8 and a replaceable working head 9. At the splines 8, spindles 7 are installed with the knowledge of the coupling half 10 with trapezoidal non-symmetric teeth 11, which interact with the counter teeth 12 of the driving coupling half 13, made in one piece with the housing 1. The teeth 11 and 12 of the coupling halves 10 and 13 have working surfaces tee 14-17. The driven coupling half 10 is tucked into the driving coupling half 13 by the spring 18, and the coupling setting mechanism for the actuation limit consists of a thrust washer 19 and a nut 20.

The wrench works as follows.

The working head 9 is mounted on a threaded connection element (not shown), for example a nut, and the button of the actuator 4 is pressed. Compressed air enters the actuator 3, from the rotor (not shown) of which through the planetary gear 5, the bevel gear 6 rotation is transmitted on the spindle 7 with the working head 9. There is a high-speed screwing on and tightening the nut of the threaded joint. At the same time, the driven coupling half 10, compressing the spring 18, snaps the coaxial surfaces 16 along the teeth of the m 12 leading coupling half 13. The tightening of the nut lasts until the torque on the spindle 7 exceeds the torque.

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developed by drive 3, after which the last 5 is stopped. After that, the wrench 2 is turned clockwise at a certain angle by the handle 2. At the same time, the leading coupling half 13, which is connected with the housing 1, turns in turn. Dot nut manufactured

5 threaded connections for a specific torque.

When the handle 2 is turned counterclockwise, the leading coupling half 13 by the beveled surfaces 17 slides along the tooth of m II of the driven half coupling 10, and the idle stroke of the limiting coupling is idle. As soon as the torque on the spindle 7 reaches the limit value, the interaction forces between the surfaces 14 and 15. The teeth of the coupling halves 11 and 13 withdraw them from the engagement. Is happening

5 actuation limit clutch. After completion, the nut wrench is relocated to the nut of the next threaded joint. Due to the speed screwing of the nut of the threaded joint and its manual

Q dots to the required moment expand the technological capabilities of the wrench.

Claims (1)

Invention Formula 5 A pneumatic angle wrench containing a housing with a handle, a drive with switching mechanism, a gearbox, a torque limiting coupling with a tuning mechanism, and a spindle with a replaceable working head, which differs from that with the aim of expanding technological capabilities, are external. the surface of the spindle has splines, the torque limiting clutch is made in the form of an overrunning cam clutch with trapezoidal asymmetrical teeth, leading a semi- clutch of which is rigidly connected to the housing, and the drive is mounted on the slots - cases with the possibility of axial movement. View FIG. I