SU691283A2 - Lapping (superfinishing) apparatus for trough-shaped surfaces of ball bearing rings - Google Patents

Description

(54) DEVICE FOR ARRANGEMENT (SUPERFINISH)

ROOM SURFACE RINGS

BALL BEARINGS

FIELD OF THE INVENTION The invention relates to a metalworking, mainly to the UMNI

industrial, and can be used for the final processing of the raceways of the rings of ball bearings.

According to the main author. St. No. 536946, a device is known for finishing the grooved surfaces of the rings of ball pots, containing a drive, an actuator performing an oscillatory motion, an elastic system acting on permanently magnetized measles placed in a magnetic field that tunes into resonance with the natural frequency of the elastic system; the finishing of the surface to be treated is carried out by an abrasive tool, for example, a bar mounted on a Hiap-spring-loaded lever; The necessary force of pressing the product to the abrasive tool is created by interacting with a movable rod, adjusting the tension of the cylindrical spring of the elastic system; To ensure uniform cutting speeds on all parts of the surface being processed, the device is equipped with an eccentric mounted on the drive

a mechanism, such as a gear motor, and associated with a radial groove of a movable rusk attached to the end of the torsion of the elastic system.

Precision machining of raceway tracks

rings of ball bearings depends on how closely the axis of the abrasive tool shaft coincides with the axis of the swing track. For this, the axis of the swing track is aligned with the swing axis of the abrasive tool with the stop set so that the machine’s head rests in a fixed position relative to debugging devices. The accuracy of the alignment of the swing axis of the abrasive tool with the axis of the swing track depends on

the distance between the base end of the ring

and the axis of the swing track, i.e. the position

swing tracks that are different in one

the same batch of rings processed.

Pel invention consists in obtaining

the correct geometric shape of the surface being processed due to self-centering of the abrasive tool.

Claims (2)

This is achieved in that the device is provided with. Female clip with adjustable pins. located perpendicular to the swing axis of the executive organ. FIG. 1 shows the proposed device, a general view; in fig. 2 - diagram of the device. The device consists of a stator 1 with an executive body 2, in which an abrasive tool 3 is fixed and a measles 4, through whose central opening a cylindrical rod 5 moving in the axial direction passes with a fixed torsion bar 6. At the end of the torsion bar 6 is mounted a movable rusk 7 installed in a bolt 8 in the bearing 9. The cracker 7 has a radial groove 10 in which the eccentric 11 is mounted on the shaft of the drive mechanism 12, for example a gear motor. The device is installed in the cage 13 with adjustable pins 14, which are connected by means of bearings 15 to the stator 1. The finishing (superfinish) of the raceway of the rings 16 of ball bearings is carried out as follows. The axially movable cylindrical rod 5 acts on the actuator 2 and presses the abrasive tool 3 to the swing track of the work ring 16. In this case, the abrasive tool 3 is affected by the reaction force F (see Fig. 2}, the horizontal component turns the plane around the vertical axis passing through the pins 14 and the bearings 15, as a result of which the abrasive tool 3 is self-centered along the profile of the swing track of the work ring 16. Finishing the swing tracks are carried out by oscillating movements of the abrasive tool 3, zak691283 replicated in the executive body 2 .. The oscillation amplitude is determined by the voltage of the current supplying the stator 1 winding and the oscillations of the torsion 6 from the eccentric 11 mounted on the shaft of the drive mechanism 12. The frequency of oscillation depends on the frequency of the feed current and the speed of rotation of the drive mechanism 12. As a result of complex oscillatory motion abrasive tool 3 relative to the axis of symmetry of the profile of the track of the ring of the ring 16, the surface is finished with a uniform pressing force at a uniform cutting speed, which ensures the correct ge The geometric shape reduces the amount of roughness and improves the accuracy of machining the swing track. Self-centering of the abrasive tool over the profile of the swing track allows uniform removal of metal over. the entire surface to be processed, which ensures the correct geometric shape of the surface to be treated. The invention of the device for finishing (superfinish) the grooved surfaces of the rings of ball bearings on the auth. No. 536946, characterized in that, in order to obtain a correct geometrical shape of the surface to be machined due to self-centering of the abrasive tool, it is provided with a sleeve with adjustable trunnings located perpendicular to the swing axis of the actuator. . ft ( 2