SU1387111A1 - Semiautomatic machine for assembling electric machine core packs - Google Patents

Abstract

The invention relates to manufacturing equipment for the manufacture of electrical machines and can be used in the electrical industry. The purpose of the invention is to simplify the design of the semi-automatic device and increase its productivity. The semiautomatic device contains an assembly mandrel 1, a two-position table 13, a fixedly mounted base 7 with welding torches 8 and two power cylinders with rods 3 and 4 and their control unit 12, which is connected with the package 11 controlling the height of the package 11 and with the pressure sensor 9, which are interconnected and with the welding current source 14. In the process of assembly, when a predetermined crimping pressure is reached, the sensor 9 instructs the device 10 to conduct a package height control. Upon reaching the specified size of the height of the package 11, the device 10 commands the drive 12 and the current source 14 associated with the burners 8. When welding the package, an electric arc occurs between the burners 8 and the copper washer 6, and when welding ends, it switches from the package to the copper washer 2 1 hp f-ly, 4 ill. (Oh (L

Description

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The invention relates to manufacturing equipment for the manufacture of electric machines and can be used in electrical engineering and other industries that produce electric machines.

The purpose of the invention is to simplify the design of the semi-automatic device and increase its performance.

FIG. 1 is shown functional. The scheme of the proposed semiautomatic device at the moment of package delivery to the working position j in FIG. 2 shows the main elements of the semiautomatic device at the moment of the start of movement of the packet; in FIG. 3 - the same, in the mentent package compression, measurement of e, th height and the start of welding; in fig. 4 is the same at the time of the end of welding.

Semiautomatic device for assembling packages of electrical cores (Ashin contains assembly mandrel 1 of expansion type with copper washer 2, pressure power cylinder 3 with rod pressing cylinder 4 with rod, pressing sleeve 5 and copper washer 6, fixedly fixed base 7 with welding torches 8, sensor 9 pressure crimping and electrically connected with it mechanism 10 controlling the height of the package 11 of the core, as well as the block 12 controlling cylinders 3 and 4, the two-position rotary table 13 and the source 14 of the welding current electrically connected to the control mechanism 10.

Semiautomatic works as follows.

On the assembly mandrel 1 of expansion type with copper washer 2, located at the preparatory position of the rotary table 13, manually or with the help of a robot freely, since the landing surfaces of the mandrel 1 are reduced in the initial state, a set of sheets of a package of 1 1 core is installed . After turning the table 13, the mandrel 1 with the package 11 is located at the working position. The rod of the lower cylinder 3 begins to rise and through the opening of the turntable 13 comes to the mandrel 1, after which the mandrel with the package begins to rise until it touches the copper washer 6, reinforced on the pressure sleeve 5 and opposite the welding torch 8.

this causes the mandrel T to be opened, as a result of which its seating surfaces take on the required dimensions and ensures the final orientation of the bag.

When the set pressure of the package 11 is reached, the sensor 9 instructs the mechanism 10 to monitor the height of the package 11. If the required height of the package 11 is observed, the mechanism 10 instructs the control unit 12 to continue moving up the package 11 with cylinders 3 and 4 when maintaining the desired pressure crimp. At the same time, a signal is sent to the current source 14 from the mechanism 10 at the start of welding by all the burners 8 simultaneously. An electric arc arises between the electrode of each burner 8 and the copper washer 6. Upon further supply, the electric arc smoothly passes from the copper washer 6 to the package 11. At the same time, no welded connection is formed between them, since the welding current is sufficient to melt the steel core, insufficient to melt the copper washer due to the significantly higher thermal conductivity and heat capacity of copper .

Due to the fact that the arc does not ignite on the package 11 itself, a so-called crater and other weld seams are not formed on it. Copper washer 6 is also not formed due to the indicated properties of copper. When the entire package 11 is moved with respect to the fixed burners 8, the welds are formed along the entire length of the package of the core, and then the arc smoothly transfers to the copper washer 2. Then the package 11 stops and the arc stops. For the above reason, a welded joint between the package 11 and the washer 2, as well as seals of the weld seam on the core, do not form

The outer diameter of the copper washers 2 and 6 is assumed to be smaller than the diameter of the stack 1 1 by an amount approximately equal to the required depth of the weld in order to reduce the retraction. heat from the extreme sheets of the package and ensure their reliable welding to the required depth. The height of each washer is taken more than the arc spot diameter to avoid damage to the package when the arc starts and stops.

Upon termination of welding, the core pack 11 is lowered. In this case, the rod of the upper cylinder 4 is lowered to its lower initial position NIN and stops. The bag 11 is separated from the washer 6, while the mandrel 1 is compressed and continues to descend together with the rod of the lower cylinder 3 until it is fixed to the turntable 13, and the rod 3 continues to descend to its lower initial position.

After that, the rotary table 13 is rotated and transfers the gov.core core from the working to the preparatory position, from where it is manually or using a robot (not shown) freely removed from the mandrel 1. Simultaneously with the insertion of the finished core from the working to the preparatory position from the preparatory to the working position is transferred to the next package, previously installed in the preparation position during welding of the previous package.

Claims (2)

1. A semi-automatic machine for assembling packages of electric machine cores, comprising an assembly mandrel, pressure cylinders with their control unit, a package height control mechanism and a welding mechanism, characterized in that, in order to increase productivity and to simplify the design, the semiautomatic device is equipped with a pressure sensor for deflection, electrically connected with a package height control mechanism, E a package height control mechanism electrically connected with the welding mechanism and feedback from the control unit of the power cylinders. 2. A semiautomatic device according to claim 1, characterized in that it is equipped with two copper washers made with a diameter smaller than the diameter of the package being assembled by the size of the weld depth and a height greater than the spot diameter of the welding arc, and one washer mounted on the mandrel. and a friend on a pressure cylinder. jig FIG. Fig