SU1489966A1 - Chuck for screwing studs - Google Patents

Abstract

The invention relates to devices for assembling threaded connections, in particular, cartridge-type tools. The purpose of the invention is to increase reliability. The gripping pin enters the guide cup 2. The stop 6, in contact with the end of the pin, compresses the spring 5. In this case, the grooves 7 of the stop 6 are positioned against the balls 9 that enter the grooves 7, and the guide cup 2 moves axially relative to the body 1 . The threaded cams 3, moving along the tapered surface 12 of the housing 1, capture the pin. 1 il.

Description

The invention relates to devices for assembling threaded connections, in particular, to tools of the cartridge type.

The purpose of the invention is to improve reliability by eliminating the radial movement of the gripper in the absence of a pin in it.

The drawing shows the proposed cartridge, a general view.

The cartridge for screwing the studs includes a housing 1 in which a guide cup 2 is installed, threaded cams 3 radially spring-loaded with an annular spring 4. Between the cams 3 there is a spring-loaded spring-loaded spring 5 5 with grooves 7 and a radial hole 8 for balls 9, in contact with the stop 6 and the Ring groove 10 of the housing 1. Along the length of the housing 1 there are clamps in the form of balls 11 spring-loaded to the housing 1, the housing 1 has an inner conical surface 12 along which the threaded jaws 3 move.

Balls 14 serve to transmit the torque from body 1 to threaded cams 3 entering the longitudinal windows 13 of guide cup 2. In case 1, a reverse cone 15 is made, with which balls 11 interact. are held in housing 1 by pin 16.

The cartridge for tightening the studs works as follows.

In the initial position, the guide cup 2 is extended from the housing 1 (position on the drawing). At the same time, the threaded cams 3 under the action of the spring 4 are pressed against the conical surface 12 of the housing 1 and are recessed in the windows 13 of the guide cup 2, and the stop 6, moving under the action of the spring 5, embeds the balls 9 into the groove 10 of the housing 1 and closes the outlet.

When the cartridge is put on the stud (not shown), the latter enters the guide cup 2, which serves to orient and guide the stud to the threaded jaws 3. In this case, if the stud rests for some reason against the end of the guide cup 2, it the axial direction of the housing 1 does not move as the balls 9 are in the groove

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ke 10 housing 1 and the output of it is closed by the stop 6.

If the gripping pin enters the guide cup 2, the stop 6, in contact with the end of the stud, moves, compressing the spring 5. After the grooves of the stop 6 are opposite the balls 9 and the latter enter them, the guide cup 2 moves along the axis bodies 1. In this case the threaded cams 3, slipping along the tapered surface 12 of the body 1, move radially in the longitudinal windows 13 of the guide cup 2 and squeeze the pin. A cartridge with a gripped stud rises.

When the guide cup 2 is moved axially relative to the body 1, the retainer balls 11 are in contact with the reverse cone 15 of the body 1 and hold the guide glass 2 with the pin taken up by the threaded cams 3 from axial movement relative to the body 1.

Next, the cartridge with the gripped stud is lowered to the threaded hole into which the stud is to be screwed.

After tightening the stud to the desired depth, the cartridge rises. In this case, the guide cup 2 with the threaded jaws 3 remains with the pin, and the body 1 moves upwards. Relative movement of the housing 1 and the guide cup 2 takes place until the pin 16 fixed in the housing 1 rests against the windows 13 of the cup 2. Next, the housing 1 and the guide cup 2 with the threaded cams 3 move together upwards. When this happens, the threaded cams 3 diverge under the action of the stud and spring 4 in the radial direction and press against the conical surface 12 of the housing 1, and the stop 6 moves axially under the action of the spring 5 and bevels the groove 7 with the bevel of the groove 7.

Thus, all the parts of the cartridge are in their original position. Then the cycle repeats.

Claims (1)

Invention Formula A cartridge for tightening the studs, comprising a housing with a reverse internal cone accommodated therein 5 1489966® threaded cams and spring-loaded clamps along the axis, an emphasis, I distinguish, in the form of balls, some of which are usable, and with the fact that, with the aim of being increased in the annular groove of the reliability crown, in the housing of the horn, with the possibility of periodic the annular groove is filled, while the pat-interaction with the anvil and the radialron is equipped with a glass installed in the housing groove, and the others with a longitudinal-made glass. spring-loaded to the body and installed windows under the threaded cams with the ability to interact with and a radial groove, placed by the inverse cone of the latter.