SU812538A2 - Apparatus for superfinishing - Google Patents

Description

(54) DEVICE FOR .SUPFINING

one

The invention relates to a machine tool industry and can be used in superfinishing machines.

According to the main author. St. No. 217994, a device for superfinishing is known, consisting of a housing with a drive shaft mounted thereon on bearings with a connecting rod mounted on it through a replaceable eccentric bushing, an interaction with the instrumental carriage and giving it reciprocating motion in guide bodies the shaft is installed through the second interchangeable eccentric bushing of the connecting rod, the interaction of the second tool head oo and telling it the reciprocating motion in the guide bodies, the same th largest and opposite the first tool carriage ij.

A disadvantage of the known device is that to change the magnitude of the stroke of the reciprocating movement of the carriages, when setting up the machine for another processing mode, it is necessary to install new eccentric bushings having a different ecocentricity.

The purpose of the invention is to reduce the labor intensity of the device dragging.

This goal is achieved by the fact that the device is mounted on a shaft with the possibility of installation rotation about its axis and which is in contact with eccentric bushings.

FIG. 1 schematically shows a proposed device, a longitudinal section; in fig. 2 shows section A-A in FIG. one.

The proposed device includes a drive pulley 1, a rotary sleeve 2, connected by fingers 3 and 4 with eccentric sleeves 5 and 6, is located EF on the shaft 7. The rotary sleeve 2 has teeth on one end.

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The shaft 7 has two eccentric necks 8 and 9. The sleeve 2 is intended for turning the sleeves 5 and 6 relative to the eccentric necks 8 and 9 of the shaft 7,

5 i.e. to change the eccentricity value. The device also contains a locking element, for example a sleeve 10, connecting rods 11, 12 connected to the carriages 13, 14. The sleeve 2 is connected to

0 with a chimney 7 by means of a clutch 10 and a key 15. The carriages are installed in the housing 16 on the rolling rails 17. Famous tool heads with abrasive bars (not shown) should be located on Jig carriages. The device also includes ga 18, spring 19, limb 20. The device works as follows. The rotation of the pulley 1 is transmitted to the rotary sleeve 2 and the eccentric bushings 5 and 6. At the same time, the shaft 7 rotates through the clutch 10, which through the connecting rods 11 and 12 transfers the reciprocating movements of the carriages 13 and 14. The carriages move along the guides 17 in opposite directions x The setting of the stroke of the carriages is made by changing the value of the eccentricity between the eccentric bushings 5 and 6 and the eccentric necks 8 and 9 of the shaft 7, for which it is necessary to loosen the nuts 18, while the coupling 10 under the action of the spindle 19 moves to the left, disconnecting the shaft 7 with the sleeve 2 Holding shaft 7 against turning, turning pulley 1 turns the eccentric sleeves 5 and 6 of a turn.

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Claims (1)

3 f ff17 1S relatively eccentric necks 8 and 9 of shaft 7. The stroke of the carriages is set by limb 20. After setting the required stroke of the carriages, nuts 18 are tightened. the quality of processing and reduces the time of simple equipment, since it does not require the development of a device for regulating the carriage stroke. The invention of the device for superfinishing aut. St. No. 217994, in order to reduce the complexity of changeover, it is equipped with a sleeve installed on the shaft with the possibility of installation rotation about its axis and contact with the eccentric bushings. Sources of information taken into account in the examination 1. USSR author's certificate 217994, cl. 24/35/00, 1969. J. t /