SU1235704A1 - Flat-surface lapping machine - Google Patents

Description

The invention relates to the abrasive machining of high-precision parts from hard-to-machine materials and can be used to grind and polish the flat surfaces of gal-arsenide, indium arsenide, quartz, garnet, silicon, sapphire, ceramics, hard alloy steel and other hard-to-work materials.

The whole invention is to increase the productivity of the process and the quality of the surfaces to be treated by eliminating system vibrations during eccentric movement of lap-in and increasing their speed of rotation.

The drawing shows a plan of the Plane-Finishing machine, section.

The machine consists of a central shaft 1, which is located through bearings 2 and a stationary glass 3 of a finishing machine, the upper end of which is made in the form of a horizontally located flange 4 of bed d, of an industrial machine. At the upper end of the shaft 1 there is an eccentric 5 of the central shaft, an impeller dnamic counterweight 6. The eccentric 5 rotatably supports the base 7 of the lower lap 8, and the base 7 rests on the flange 4 of the finishing machine through ball bearings 9 that are placed in the disk drive jack 10, which is rotatably mounted on the central shaft 1. Concentric on the base 7, there is a lower lap 8 and a rim 12 of the planetary gear of the separator 13, in which the workpieces 14 are located. s 15 different lapping IU ", 1aets on the workpiece 14 and its movement is also limited

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five

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five

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rim 12. The rotational drive of the central shaft I is not shown in the drawing.

The machine works as follows.

When the central shaft i rotates, the eccentric 5 rotates around the O-O axis with the eccentricity value e. The eccentric movement is transmitted to the base 7 of the lower lap 8 and the rim 12. Moreover, the base 7 can receive additional rotation of the BO eccentric circle 5 from the effects of friction forces due to that the base 7 of the lower lap 8 is in contact with the flange 4 of the bed of the lapping machine, i.e. their mutual movement is carried out with minimal mutual friction. An additional design feature is the presence on the eccentric} trick 5 of the dynamic counterweight 6, which reduces the level of vibration imposed on the structure by eccentric movement of the base 7 of the lower lap 8. The balance disc 11 performs the task of limiting the movement of ball bearings in the design, ensuring all time Ace of the machine operation, basing the base 7 of the lower lapping disc at three points. Since the separator 13 and the upper lap 15 are not fixed; they have the ability to change inside the rim 12 of the interlocking mechanism, the lower lap 8 involves, due to friction forces, the separator 3 with the parts 14 and the upper lap 15 in s, the southern movement, which consists of an eccentric movement around the axis O-O and a planetary movement due to frictional forces between the lateral surface of the rim 12 and the lateral surfaces of the separator 13 and the upper grounding 1: 5. Details in his work process of the machine get a complex movement on the surfaces of the lower 8 and upper 15 ground coatings.

Claims (1)

FLAT AND DRILLING MACHINE. comprising a bed with a drive shaft mounted on it with an eccentric and a base bearing a lower lapping and a planetary gear rim, designed to engage with a freely installed separator for placing parts and an upper lapping, characterized in that, in order to improve the quality and productivity of processing, it is equipped mounted on the drive shaft with the possibility of rotation with respect to it of the balancer disk with spherical bearings located in the windows made in the disk between the bed · and the base of the lower lapping disposed rotatably on the eccentric drive shaft.