SU1301683A1 - Power-driven nut driver - Google Patents

Abstract

The invention relates to a mechanized tool for calibrated tightening of threaded connections. The purpose of the invention is to increase productivity and ease of operation by reducing the time and simplifying the setting of the wrench at pre-set points during multi-limit tightening. The electromechanical wrench includes a housing 1 in which a torsion shaft 3 is installed with a working head 4, kinematically coupled to an actuator 2. A torque sensor is connected to the torsion shaft 3, and a movable plate is mounted on the housing 1, in which a rotating washer is installed. Two contactless limit switches are fixed in the washer, which interact with the torque sensor and adjust to the set points by moving the bar and turning the washer. To eliminate the influence of the switches on each other and to ensure the sequence of their operation, a clock switch is turned on in the circuit of the switches. 4 il. and WITH о о о СХ

Description

The invention relates to a mechanized tool and can be used for calibrated tightening of threaded connections.

{The invention of spruce - an increase in productivity and ease of operation due to the reduction of time and an increase in the adjustment of the wrench to the set points with a multi-limit tightening.

FIG. 1 depicts an electromechanical wrench built into a two-pin assembly machine; in fig. 2 - the same, longitudinal section; in fig. 3 - the same, across P 1Y a section; in fig. 4 is an electrical power circuit of the limit switches.

An electromechanical impact wrench containing body 1, drive 2, torsion shaft 3 with a working tin 4, connected to drive 2 through an electromagnetic clutch 5 and gearbox 6, which interacts with shaft 3 and sensor 7 has a twist moment with an annular screen 8. placed on Cornus I with axial displacement 9, on which 1 Naiba 10 is installed with the possibility of rotation and fixation, and two bssc1) contact end points 1 1 and 2, installed diametrically in the washer And) and periodically interacting with the collet ell |) anom 8 sensor 7 torsional .men that The axial movement of 1 foot 9 is accomplished with the help of screw 13, and the fixing of H1aib 10 by disk 14, which is clamped to the annular protrusion 16 in the ramp 9.

The wrench also contains a power source 17 and so on, a new switch 18, which is associated with the limit switches II, 12, which clarifies the order of their operation.

In order to calibrate the group of studs, the electromechanical wrench can be included in the multi-screw O1 0 assembly machine (fng-G).

Electromechanical gaykovert works as follows.

The insertion of a hinged threaded joint (not shown) by the tachother is produced in two ethanes. At the nerve stage, pre-tightening of the joint is ensured to MOMeirra M, which is necessary for uniform crimping of the junction of the threaded parts of the threaded connection. At the second stage, the final tightening of the compound is performed. The Ma, 6ojn: 3HjnM M |.

Before installing the working heads of 4 wrenches on the threaded connection, set the limit switches And n 12 pa the specified tightening torques. The setup is done in two steps. At the same time, the distance between P1aiba 10 sets a definite distance between off

bodies 11 and 12, corresponding to the magnitude of the moment increment LM M2-MI. After turning H1abu 10 is fixed on the bar 9 in a predetermined position by tightening the screws 15. In the second stage, the bar 9 is moved with a screw 13 to a predetermined position corresponding to the setting of the limit switch 12 at the moment Mv. The other limit switch 11 automatically takes the position corresponding to the moment

M. The clock switch 18 is set to the position, at which only the limit switch P. is connected to the source 17.

After adjustment, the working heads of the 4 wrenches are mounted on the threaded connection. The drive 2 is turned on and the rotation is through the reducer b, the electromagnetic clutches 5, the torsion shafts 3 are transmitted to the working heads 4. The tightening of the threaded connection is tightened. As the torque increases, the shaft 3 of the wrenches twists and, using sensor 7, changes the ring screen 8 in the axial direction. If not interleaved, the ring screen 8 influences the contactless end switch 11 configured to the moment M |.

5 Switch 1 I sends a command to the control system to detect the corresponding clutch 5. P |) and the achievement of the m parameter M | on each nutrunner, the clock iiepeK./nover reader 18 is not switched to the position at which T is supplied to power supply 17 (r, 1 is switch 12). The machine’s control system reapplies the coupling 5 and the cycle of operation repeats the only difference is that the command to disconnect the clutches 5 is supplied to the control system by a switch 12, which is used at the time of pulling on Ma.

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Claims (1)

Image formula An electromechanical wrench, comprising a housing, an actuator mounted in the housing and connected to the drive of the piston, a fifth shaft with a working head, a torque sensor that interacts with the shaft, and a torque moment placed on the corns with the possibility of axial movement of the bar with a contactless limit switch.m, periodically interacting p.1 with a cool n1 sensor, its torque, and a power source electrically connected with the transmitter, in order to improve performance and ease of operation, it is equipped with a cable installed on the pa- nlank with the possibility of rotation and fixation, and a second contact-free limit switch, and both switches are locked diametrically on the locker and connected to the power source via a clock switch. Fig2