CN202079389U

CN202079389U - Automatic screwing machine for automobile safety-airbag nut

Info

Publication number: CN202079389U
Application number: CN2011200045023U
Authority: CN
Inventors: 刘苹; 王仲民; 丁洋; 张文智; 李国和; 刘鹏鑫; 吴鸣
Original assignee: Tianjin University of Technology
Current assignee: Tianjin University of Technology
Priority date: 2011-01-07
Filing date: 2011-01-07
Publication date: 2011-12-21
Anticipated expiration: 2021-01-07

Abstract

The utility model relates to automated electromechanical equipment for screwing an automobile safety-airbag nut, and the equipment simultaneously has the function of protecting the operation of an operator. A screwing machine comprises a servo wrench, an electrical cylinder, a cylinder, a clamp and a machine frame. An automobile safety airbag is installed in the clamp, and a clamping mechanism is driven to clamp a workpiece by the cylinder. The servo wrench is driven by an alternating-current servo motor, the position of a bolt is automatically aligned under program control, the nut is then screwed through a wrench head, the torque is simultaneously controlled according to a signal acquired by a sensor installed on the wrench head, and the function of overload protection is finished. Through the equipment, the production rate is improved, the labor intensity of operators is lowered, and meanwhile, the personnel safety of the operators is also guaranteed.

Description

Safe automobile air bag nut automatic screwing device

Affiliated technical field:

The utility model relates to a kind of automation electromechanical equipment that is used for the safe automobile air bag nut screwing clamping, and this equipment has the function that operator's operation is protected simultaneously.

Background technology:

Safe automobile air bag is by the assembling that is threaded, and present most of safe automobile air bag manufacturers fastening nut when assembling is by the hand-held nut screwing clamping spanner of operator, finishes the operation of tightening of nut behind artificial centering bolt position.In the course of work, the operator constantly repeats the single action of tightening, and not only labour intensity is big, and exerts oneself inhomogeneous and cause the moment of torsion of four nuts unequal, the generation of twisting phenomenon also very easily occurs leaking.

Summary of the invention:

The problem that the utility model need solve is, overcome disadvantages of background technology, according to production requirement, designed a kind of safe automobile air bag nut automatic screwing device, utilize this tightening device assembling safe automobile air bag, improve productivity ratio, reduced operator's labour intensity, also ensured operator's personal safety simultaneously.

The technical scheme that the utility model technical solution problem is adopted is: this tightening machine equipment is made up of servo spanner, electric cylinder, cylinder, anchor clamps and frame.Safe automobile air bag is installed in the anchor clamps, drives the pressing plate clamping work pieces by cylinder.Servo spanner is by AC servo machinery driving; under programme-control, on X, Y, three directions of Z, move; position with centering bolt place; then by driving end with nut screwing clamping; the torque signal control torque that collects according to the torque sensor of installing on the driving end and position sensor simultaneously, and finish overload protection function.The grating chi that this tightening device is equipped with plays the effect of the operator being carried out safeguard protection.

Description of drawings:

Fig. 1 is the structure chart of tightening machine.

Fig. 2 is the left view of tightening machine.

1.Z axle among the figure, 2. servo spanner, 3.X axle, 4. air bag, 5. anchor clamps, 6. frame, 7. grating chi, 8.Y axle, 9. driving end, 10. clamp mechanism.

The specific embodiment:

At first, air bag (4) is put on the anchor clamps (5), drives clamp mechanism (10) clamping work pieces by cylinder, and having four nuts on the air bag (4) need tighten.At this moment, program control system reads the model of air bag (4) and selects the program of tightening automatically.Servo spanner (2) moves on X-axis (3), Y-axis (8), (1) three direction of Z axle under programme-control, realizes aiming at automatically.In the rundown process driving end (9) is provided with overload protection, in the course of work as to detect moment of torsion excessive or do not have moment of torsion, then enters overload protection, if moment of torsion normally then continue to tighten and detect stroke signal; Enter exception handles if stroke signal is undesired, push away torque signal if normally then continue to tighten and detect; If the undesired exception handles that then enters.By that analogy, all be tightened until four nuts, servo spanner (2) is withdrawal automatically; Clamp mechanism (10) is unclamped, and air bag (4) is taken away.Grating chi (7) plays the safeguard protection effect to the operator.

Claims

1. a safe automobile air bag nut automatic screwing device is characterized in that: be made up of servo spanner, electric cylinder, cylinder, anchor clamps and frame; Air bag is installed in the anchor clamps, drives the clamp mechanism clamping work pieces by cylinder; Servo spanner is by AC servo machinery driving.

2. according to claim 1 described safe automobile air bag nut automatic screwing device, it is characterized in that: this tightening machine is equipped with torque sensor and position sensor.

3. according to claim 1 described safe automobile air bag nut automatic screwing device, it is characterized in that: this equipment is equipped with the grating chi.