RU102316U1 - ELECTRIC SPARKING DEVICE - Google Patents

Abstract

 A device for electrospark alloying, comprising a housing, inside which a magnetic circuit, a coil and a spring-loaded armature are placed, the position of which is regulated by a screw, and on which an electrode holder is mounted, characterized in that it is equipped with an automatic electrode feeding mechanism made in the form of two rollers, one of which is fixed in the housing and is located in a spring-loaded insert, and the other is mounted on the electrode holder and is driven by a stepper motor, while the automatic adjustment unit and the vibrator by the required value is made in the form of a stepper motor, screw-nut gear system, gears, and the tracking system is made in the form of a linear displacement sensor, an external driver, a comparison device, an amplifier designed to control the electrode feed speed.

Description

The utility model relates to devices for electrophysical processing, in particular electrospark alloying of cutting tools, die tools and machine parts.

Known devices for electrospark alloying containing a vibrator and a generator for generating pulses of technological current, powering the vibrator winding, process monitoring and control (document number 2140834, B23H 9/00, 10.11.1999, ELECTRIC SPARING METHOD AND DEVICE FOR ITS IMPLEMENTATION; document number 2060118 , V23H 1/02, 05.20.1996, DEVICE FOR ELECTRIC SPARK PROCESSING; document number 2313426, B23H 1/02, 12.27.2007, DEVICE FOR ELECTRIC SPARK PROCESSING).

Closest to the proposed technical solution is a device containing a housing, a magnetic circuit, a coil, an armature, an electrode holder, a cable with a connector for connecting to a generator, a spring (Vibrator EIGA.687331.003 installation UR-121)

A disadvantage of the known technical solution is the low quality of alloying due to the uneven thickness of the layer of diffused material, low reliability and stability.

The technical result is an increase in the quality of alloying, an increase in processing productivity.

The drawing shows a block diagram of a utility model.

The device for electrospark alloying comprises a housing 9, inside of which there is a magnetic system containing a coil 5, a spring-loaded anchor 4, the position of which is regulated by a screw 6. An electrode holder 3 is attached to the anchor 4, on which the drive roller 20 is fastened. The drive roller 20 interacts with the roller of the automatic mechanism electrode feed 17 (consisting of a stepper motor, screw-nut gear system, gears (not shown) and a contact roller). Coaxial with the drive roller 20 in the housing 9, the roller 21 is attached to the spring-loaded insert 16. The height of the vibrator is set by the automatic vibrator adjustment unit to the required value 18 (consisting of a stepper motor, screw-nut gear system, gear drives (not shown)). The gap between the part 1 and the electrode 2 is controlled by a tracking system consisting of a linear displacement sensor 11, an external driver 14, a comparison device 12, an amplifier 13. A tip 22 is attached to the end of the electrode. The orientation of the electrode 2 in the housing 9 is supported by a sleeve 8.

The spark gap is formed by the part 1 and the alloying electrode 2, mounted in the electrode holder 3. The housing is provided with axial movement when using the automatic vibrator adjustment unit to the required value 18. Time adjustment between the feed rate of the electrode 2 and the arc voltage and its length is carried out automatically by the feed mechanism an electrode 17 and a tracking system consisting of a linear displacement sensor 11, an external driver 14 sending to the comparison device 12 the signal is the standard of the amplifier 13, through which the driving signal about the value of the sub-adjustment [U = K · A (t)] is supplied to the electrode feed mechanism 17.

Automatic movement of the electrode is carried out by the system 17 and the roller 21, mounted in the liner 16, spring-loaded compression spring 15 and installed in the housing of the vibrator 9.

Having passed the driving rollers 20, 21, the electrode 2 enters the current lead, where it is pressed to the current-carrying contacts 19 and slides along them, conducting the current supplying the arc. The distance from the drive rollers 20, 21 to the end of the current-carrying contacts 19 is equal to the length of the mechanically fixed tip of the electrode 22.

The vibrator is made in a plastic case 9, inside of which is placed a magnetic system containing a magnetic circuit, a coil 5 and an armature 4. A vibrator is connected to the generator 10 by a cable with a connector (not shown). The size of the gap between the magnetic circuit and the armature is adjusted during the assembly of the vibrator with screw 6, the size of the gap is (0.15 _-0.1 ) mm. Spring 7 returns anchor 4 to the point of contact with the machined surface 1.

Claims (1)

A device for electrospark alloying, comprising a housing, inside which a magnetic circuit, a coil and a spring-loaded armature are placed, the position of which is regulated by a screw, and on which an electrode holder is mounted, characterized in that it is equipped with an automatic electrode feeding mechanism made in the form of two rollers, one of which is fixed in the housing and is located in a spring-loaded insert, and the other is mounted on the electrode holder and is driven by a stepper motor, while the automatic adjustment unit and the vibrator by the required value is made in the form of a stepper motor, screw-nut gear system, gears, and the tracking system is made in the form of a linear displacement sensor, an external driver, a comparison device, an amplifier designed to control the electrode feed speed.