SU1031687A2 - Device for monitoring roller and sport welding process - Google Patents

Abstract

DEVICE FOR CONTROL. FOR THE PROCESS OF CONTACT DOT (IH AND ROLLING WELDING on Aut. St. Mi 511167, sent to amp & A, which, with the aim of improving the accuracy of controp, it has been replaced by amp & Usipvtep with pvumv vkhotsamv, reg: shggor, block vtegapovaniya in the adder, while entering the summat p poksksho. to the out- put of the block is inserted into the acoustic signal, aykho it - to the storage device & .

Description

Q WITH

Od

00

The invention relates to contact e-cars and can be used to control the quality of welded joints non-spontaneously in the process of conducting spot and roller welding of raeschnyh products. According to the main author. St. Mi SI 1167 is a device for controlling the process of contact spot and roller welding. It contains acoustic Ciai sensor sensor signal, automatic switch, memory device, comparator, control device, threshold elements, registration units and signaling device, integration unit l Disadvantage The reduction in the accuracy of the xvagrop padviepoB of the cast area of the parts to be welded due to the influence caused by the welding current passing through the secondary contour of the machine, is reduced. Especially when the magnitude of the welding current has a large quantity, for example, when welding all other alloys and ferrous metals of thicknesses. The goal of this is to increase the accuracy of control. The goal is achieved by the fact that the device for controlling the process. In contact spot and roller welding, a successively connected welding current sensor, an amplifier with two rims, a regulator, an integrator and an adder are inserted, the input of the adder is connected to the output of the acoustic integrator of the siznal, its output is connected to the aunt of the device, and the amplifier is the second input is connected to the automatic CMM key. The drawing shows a block-: device hem, Device.consists of an amplifier 2 sensors connected in series to the acoustic sensor, an acoustic sipdal integration unit 3 and an adder 4, the current correction circuit of the device consists of the welding current sensor 5 connected in series, the welding sensor 6 amplifiers current, the regulator L5 of the burner 7 / and the welding signal integration unit 8, the output is connected to the second input of the adder 4, the output of the adder 4 is connected to the storage device 9. The device Also a 10 level zero comparator in the cast zone is used. control unit 11, bpok 12 scaling analog-to-digital converter 1.3, signaling and recording unit 14, threshold elements 15, auth key 16, connected to communicators 2 and 6. The device operates in the same way. The signal from the acoustic sensor 1, which carries the components of the & - caused by mechanical vibrations arising from the formation of the welding core and the influence of the welding current, is amplified by the amplifier 2, and the key 16 provides signal amplification only during the passage of the welding current. From the output of the amplifier 2, an amplified signal enters the Integrirov block 3 and with variable parameters by means of which the signal spectrum is converted by changing the block parameters when setting up the device according to samples of the technological sample for optimal separation of co (signal signals associated with formation of the cast zone. Next, the signal enters the adder 4, the signal from the welding current center 5 is amplified by the use of a loop 6, which is also controlled by the key 16 and is triggered during the passage of the welding current. l welding current through the regulator 7 is fed to the input of the welding signal integration unit 8, the output of the block 8 integrates the welding current signal to the second input of the adder 4. In the adder 4, the integrated signals from the acoustic sensor and the welding current sensor occur to the algebra 4 In this case, the output of the adder 4 produces a signal equal to the difference between the two signals, the signal from the acoustic sensor and the signal from the welding current sensor, i.e. the signal at the output of the adder is proportional only to mechanical oscillations that occur in the formation of the cast zone of the welding core. The memory signal No. is located on the analog storage device 9, from the output of which it is fed to the analog-digital converter 13 and to the input of the level 10 comparator of the zero dimensions of the cast zone. The comparator performs a continuous comparison of the incoming signal

from the storage device 9 and the level, for example, the Wives, corresponding to the zero size of the feed zone and from the base also on the basis of the samples of the technopogical test.

The signal from the output ksch oshratsra 1O5

enters block 11, which, through scaling 12, controls the pre-phase coefficient — not an analog-to-digital transform 13, providing a very low or 10 zero ratio of 1 (and @ at the conversion of those pairs while the voltage from the memory 9 toero device is not will exceed the level corresponding to zero dimensions of the somatic zosha.After this, the conversion factor is an increase in the value corresponding to the function of the signal from the size of the cast zone and the determined welding of the test specimen.

A signal about the end of the conversion process is fed from the analog-digital converter 13 to the laziness block II, which affects the storage time of the memory device 9,

The first cop from formation 1 13 enters the signaling unit 14 and registers using standard methods.

TT1Discreation

achieved by introducing a known welding correction circuit device consisting of a datgun of the welding current, a signal from its regulator and an intruder block to the accumulator, which ensured that interference from welding current is avoided.

According to an experimental test, the accuracy of measuring the dimensions of the cast zone during welding of alumina alloys is about 20%.

Claims (1)

DEVICE FOR CONTROL OF THE PROCESS OF CONTACT POINT AND ROLLER ST ARCHES by ed. St. No. 511167, characterized in that, in order to increase the accuracy of control, it is connected to a subsequently connected welding current sensor, an amplifier with two inputs, a regulator, an integration unit and an adder, while the adder input is connected to the output of the acoustic signal integration unit, its output is to the input of the storage device, and the amplifier with its second input is connected to the automatic key.