SU929422A2 - Nozzle - Google Patents

Description

one

The invention relates to mechanical engineering, namely to metal cutting, and can be applied to machine-building enterprises using coolant-lubricant fluids (LCL) for abrasive-diamond machining (external round, flat thread-cutting and gear grinding, etc.).

According to the main author. St. No. 846252, a coolant nozzle is known, which contains a cylindrical insert with an electromagnetic coil with pole pieces and an external magnetic conductor located on it and the magnetic conductor 1 located concentrically inside the insert.

The disadvantages of the known nozzle are the relatively short path length of the ferromagnetic particles in a magnetic field and the relatively small surface on which particles of mechanical impurities contained in the coolant resist.

These circumstances limit the effectiveness of trapping and retaining ferromagnetic impurities (the degree of cleaning of the coolant)

The purpose of the invention is to increase the efficiency of trapping and retaining ferromagnetic impurities contained in the coolant supplied to the grinding zone.

This goal is achieved by the fact that in the device the inner magnetic core, located inside the cylindrical insert of non-magnetic material, equipped with an electromagnetic coil with pole pieces and an external magnetic core, is made in the form of longitudinal partitions adjacent to one to two disks,

10 concentrically located inside the insert.

FIG. 1 shows a general view. nozzles,

incision; in fig. 2 shows section A-A in FIG. one;

15 in FIG. 3 shows a section BB in FIG. one; in fig. 4B-B in FIG. 1 (in expanded form).

Claims (1)

The device consists of a housing 1, a cylindrical insert 2 made of a non-magnetic material, on which an electromagnetic coil 3 with pole pieces 4 and an external magnetic core 5 is located. Inside the cylindrical insert there is an internal magnetic core consisting of a rod 6, short 7 and a long 8 longitudinal partitions and discs 9 and 10. The rod 6 and the long partition 8 are clamped between the discs 9 and 10, which have segment cuts 11 and 12 for entering and leaving the coolant, respectively. Short partitions 7kpbs through one to the discs 9 and 10, forming together with them successively connected compartments. The nozzle works as follows. At the time of the approach of the wheel and the part, the electromagnetic coil 3 is turned on. A magnetic field is induced between the pole pieces 4 and the internal magnetic core. The coolant entering the nozzle through the segment cut-out 11 of the disk 10, due to the "labyrinth formed by the longitudinal partitions 7 and 8, is in a magnetic field for a long time. Ferromagnetic particles and part of the non-ferromagnetic particles in the coolant stick to the surfaces of the longitudinal partitions 7 and 8 and the inserts 2, which have a larger total area than the high efficiency of their capture and retention. The coolant comes out of the magnetic field through the segmental notch 12 in the disk 9. When the circle is removed from the workpiece, the electromagnetic coil 3 is turned off and the delayed particles are washed out by the flow of coolant from the nozzle. supplied to the grinding zone. This increases the degree of cleaning of the coolant supplied to the area of contact of the grinding wheel with the workpiece. The invention of the nozzle on the author. St. No. 846252, characterized in that, in order to increase: the efficiency of trapping and retaining ferromagnetic impurities contained in the coolant fluid, the internal magnetic core is made in the form of two disks located inside the insert and longitudinal partitions adjacent to one disk, forming consistently connected compartments with them . Sources of information taken into account during the examination 1. USSR Author's Certificate No. 846252 according to Application No. 2768835 / 25-08, cl. B 24 B 55/02, 1979. FIG. 2 P; 2 5 Fig.d