CN201815782U

CN201815782U - Rotating arc sensor for TIG welding

Info

Publication number: CN201815782U
Application number: CN2010205217765U
Authority: CN
Inventors: 贾剑平; 张华�; 李红利; 金伟; 姚顺平
Original assignee: Nanchang University
Current assignee: Nanchang University
Priority date: 2010-09-08
Filing date: 2010-09-08
Publication date: 2011-05-04
Anticipated expiration: 2020-09-08

Abstract

A rotating arc sensor for TIG (Tungsten Inert Gas) welding is characterized in that an air feed pipe is fixedly connected inside a housing through supporting blocks at the upper and the lower ends in a coaxial manner; a retaining ring used for shafts is connected to the bottom end of the supporting block at the upper end; an electric apparatus rod is connected to the pipe wall of the air feed pipe between the two supporting blocks; ball bearings are arranged at the upper end and the lower end of the electric apparatus rod respectively; motors are connected to the outer wall of the electric apparatus rod; and an optical code disc is connected below the supporting block at the lower end . The utility model has the technical effects as follows: firstly, the insulation structure is optimized, and the bearing has the characteristics of self-lubrication, high-temperature resistance and the like, so that the service life of the sensor is greatly prolonged; secondly, the original air feed mode is improved, namely, protection gas is fed from the middle of the conductive rod, so that the cooling effect to the conductive rod and a tungsten electrode are better; thirdly, the structure is compact and reasonable, the overall size is small, and the use is flexible and convenient; and fourthly, the arc rotating radius can be regulated conveniently.

Description

TIG welds rotary arc sensor

Technical field

The utility model relates to a kind of arc sensor, relates in particular to a kind of TIG weldering rotary arc sensor.

Background technology

Rotary electric arc sensor is at first by the NKK company invention of Japan's eighties in 20th century, and is applied in the narrow gap weld seam.Electrode is fixed on the position of departing from the gear, and this gear passes through another gear drive by motor.Though this invention has obtained remarkable effect,, therefore limited its extensive use in actual production because this rotating mechanism is complicated, volume is big, vibration is big, it is inconvenient to regulate.For this reason, people have designed the rotation sweep structure that a kind of hollow shaft motor drives, and adopt the hollow motor structural design, make structure simpler.This structure has been saved travelling gear, has reduced motor power consumption thereby reduce power transmission loss, and easy to adjust, vibration reduces many, has improved this rotary arc sensor practicality.But the cooling water of this sensor and protection gas are sent into from the welding gun front end, and the welding gun point diameter is big in addition, welding gun length is longer, so when sensor was used for the weld seam welding occasion of angle welding welding or limited space, easy and workpiece collided, and has influenced its application.Secondly, this sensor in low commentariess on classics when spending, reduced manyly though vibrate, under high speed rotation situation, vibrate still bigger.

Arc sensor is extremely paid attention to various countries as a kind of welding sensing means, and external many welding equipment researchs and maker are all being made great efforts this field of exploitation.The research of industrially developed country starting early, developed multiple electric arc scanning form (as mariages side by side, swing and rotation) arc sensor, be suitable for different welding methods such as submerged-arc welding, TIG and MIG/MAG, some has been used for welding and has produced.All is furnished with swing type electric arc sensing tracking means on the arc welding robot that many countries produced.

Arc sensor is compared with other addition type sensor as a kind of online real-time sensing device, has simple in structure, good characteristic such as cost is low and response speed is fast, especially High Speed Rotating Arc Sensor is highly sensitive, become current and even very important research field of soldered sensor from now on, have great vitality and application prospect, suit to be applied in arc welding robot and to be similar on the mechanical device of robot.But arc welding process is a very complicated stochastic and dynamic process, because the effect of inherent complex mechanism of interference of noise and droplet transfer etc. itself makes Signal Processing become very complicated.Along with the development of intelligent mode recognition technologies such as neutral net, SVMs, statistical model identification and the continuous expansion of application thereof, bring new hope also for THE WELD SEAM TRACKING TECHNOLOGY research based on arc sensor.If can be applied to weld seam deviation identification, the identification of especially three-dimensional deviation realizes that the full-automatic high precision of three-dimensional space curve weld seam is followed the tracks of, thereby improves the automaticity of arc welding robot, enlarges its application.

Summary of the invention

The purpose of this utility model is to provide a kind of TIG weldering rotary arc sensor, problem, the angle welding welding that suitable knuckle is bigger or the weld seam welding of limited space such as solve that existing rotation sweep torch structure size is big, mechanism is complicated, vibration noise is big when rotating at a high speed.

The utility model is achieved like this; it comprises shell, tray, snorkel, circlip for shaft, electrical equipment bar, ball bearing, optical code disk, motor; it is characterized in that enclosure passes through the coaxial fixedly connected snorkel of tray of upper and lower end; the tray bottom of upper end is connected with circlip for shaft; be connected with the electrical equipment bar on the tube wall of the snorkel between two trays; the upper and lower end of electrical equipment bar is respectively equipped with ball bearing; electrical equipment bar outer wall connects motor; the tray below of lower end is connected with optical code disk; the snorkel lower end connects tungsten electrode, and all sides of tungsten electrode are passed through protective gas.

Described shell comprises air taking port, dust-break lid, upper insulator, upper shell, middle shell, lower house, gas hood, it is characterized in that air taking port, dust-break lid, upper insulator, upper shell, middle shell, lower house and gas hood are coaxial successively from top to bottom to be connected.

Technique effect of the present utility model is: (1) has optimized insulation system, and bearing has self-lubricating, characteristic such as high temperature resistant, has prolonged the service life of sensor greatly; (2) improve original mode of supplying gas, will protect gas in the middle of conducting rod, to feed, better to the cooling effect of conducting rod and tungsten electrode; (3) compact conformation, reasonable, appearance and size is small and exquisite, and is flexible and convenient to use; (4) can regulate the electric arc radius of turn easily.

Description of drawings

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is the structural representation of the utility model shell.

Air taking port 2, dust-break lid 3, upper insulator 4, upper shell 5, middle shell 6, lower house 7, gas hood 8, tray 9, snorkel 10, circlip for shaft 11, electrical equipment bar 12, ball bearing 13, optical code disk 14, motor 15, tungsten electrode in the drawings, 1.

The specific embodiment

As shown in Figure 1 and Figure 2, the utility model is achieved like this, enclosure is by the tray 8 coaxial fixedly connected snorkels 9 of upper and lower end, tray 8 bottoms of upper end are connected with circlip for shaft 10, be connected with electrical equipment bar 11 on the tube wall of the snorkel 9 between two trays 8, the upper and lower end of electrical equipment bar 11 is respectively equipped with ball bearing 12, and electrical equipment bar 11 outer walls connect motor 14, the snorkel lower end connects tungsten electrode 15, and the tray below of lower end is connected with optical code disk 13.Described shell air taking port 1, dust-break lid 2, upper insulator 3, upper shell 4, middle shell 5, lower house 6 from top to bottom is connected with gas hood 7 is coaxial successively.

Claims

1. a TIG welds rotary arc sensor, it comprises shell, tray, snorkel, circlip for shaft, electrical equipment bar, ball bearing, optical code disk, motor, it is characterized in that enclosure passes through the coaxial fixedly connected snorkel of tray of upper and lower end, the tray bottom of upper end is connected with circlip for shaft, be connected with the electrical equipment bar on the tube wall of the snorkel between two trays, the upper and lower end of electrical equipment bar is respectively equipped with ball bearing, electrical equipment bar outer wall connects motor, the tray below of lower end is connected with optical code disk, and the snorkel lower end connects tungsten electrode.

2. TIG weldering rotary arc sensor according to claim 1, it is characterized in that described shell comprises air taking port, dust-break lid, upper insulator, upper shell, middle shell, lower house, gas hood, air taking port, dust-break lid, upper insulator, upper shell, middle shell, lower house and gas hood are coaxial successively from top to bottom is connected.