SU846287A1 - Apparatus for making eccentric parts - Google Patents

Description

Union of Soviet

Socialist

Republics

DESCRIPTION

Inventions

(.1) 846287

TO AUTHOR'S CERTIFICATE

USSR State Committee for Inventions and Discoveries (61) Additional to ed. certificate-wu - (22) 3 announced 11 .07.79 (21) 2795485 / 25-08 with the addition of application No.- (23) Priority -

Published on July 15th, 81. Bulletin No. 26

Date of publication of the description 15.07.81 (51) M. CL ^{1 * 3}

V 23 V 31/36 (53) UDC 621 .941.

.2 (088.8)

(54) DEVICE FOR MANUFACTURING Eccentric Parts The invention relates to mechanical engineering and can be used in the manufacture of parts with eccentric surfaces.

A device is known for manufacturing eccentric parts on a lathe, comprising a cage mounted eccentrically relative to the axis of the spindle, and also controlling the magnitude of the eccentric sleeve with a SP scale.

The disadvantage of this device is the design complexity, low rigidity due to the presence of joints and gaps in the structure. ₍

The purpose of the invention is to simplify the design and improve the accuracy of processing. To achieve this goal in the device, the clip is made split and eccentric, on the inside _; the surface of the cage is made annular boring, in which is installed a split eccentric sleeve provided with a protrusion.

In FIG. 1 shows a device, a General view; in FIG. 2 - view A in figure 1 ..

The device consists of a holder 1 and a sleeve 2. The holder 1 is installed in the spindle chuck of a lathe. On the front side of the cage, circular divisions 3 are applied, and an annular recess 4 is made on the inner surface. An eccentric rotary sleeve 2 is installed in the annular recess through the slot 5 by the protrusion 2. The notch 7 is made in place of the greatest thickness of the wall of the sleeve 2 opposite to the protrusion.

When installing the sleeve 2, the clip 1 is expanded, and with an increased width of the slot through it, the protrusion of the sleeve freely passes. When the protrusion hits the annular recess, the cage is compressed and thereby closes the protrusion, preventing the axial displacement of the sleeve. In this position, the eccentric sleeve can rotate, and then the protrusion slides along the annular groove. When · 846287 turning the sleeve, an eccentricity forms. It changes about-s the position of alignment of the inner surface of the sleeve and the outer surface of the cage to a maximum value of 6. The magnitude of the eccentricity at different sections of the rotation is determined by the circular scale of the clip. A part is installed on the inner surface of the sleeve and secured as a result of compression of the clip by the cams of the cartridge. The compression of the clip is transmitted to the sleeve, which, compressing, secures the part.

This invention has a simple design and provides improved accuracy for machining eccentric parts.

Claims (2)

The invention relates to mechanical engineering and can be used in the manufacture of parts with eccentrically located surfaces and. A device for manufacturing eccentric parts on a lathe is known, comprising a holder, which is mounted eccentrically about the spindle axis, as well as regulating the value of the eccentricity sleeve with the Lfj scale. Not the rest of this device is the complexity of the design, low rigidity due to the presence of joints and gaps in the structure. The purpose of the invention is to simplify the construction and improve the accuracy of processing. To achieve this goal, the device of the holder is split and eccentric, on the inner surface of the holder there is a ring bore, in which the opening is installed, an eccentric sleeve fitted with a protrusion. FIG. 1 shows a general view of the device; in fig. 2 is a view A of FIG. 1. The device consists of a yoke 1 and a hub 2. A yoke 1 is installed in the lathe spindle cartridge. Circular divisions 3 are applied on the end side of the cage, and an annular recess 4 is made on the inner surface. An eccentric pivot bushing is installed in the annular recess through the slot 5 by the protrusion 6 2. Slot 7 is made in place of the greatest wall thickness of the sleeve 2 opposite the protrusion. When the sleeve 2 is installed, the sleeve 1 is expanded, and with an increased slot width, the protrusion of the sleeve freely passes through it. When the protrusion hits the annular recess, the yoke shrinks and thereby closes the protrusion, preventing axial displacement of the sleeve. In this position, the eccentric sleeve can rotate and then the protrusion slides along the annular groove. When the sleeve rotates, an eccentricity is formed. It changes from a position from the inside of the sleeve and the outside of the sleeve to a maximum value of 6. The magnitude of the eccentricity at different parts of the turn is determined by the dial dial scale. A part is mounted on the inner surface of the sleeve and is fixed as a result of the clamping by the cams of the cartridge. The compression is transmitted to both the sleeve, which, by compressing, secures the part. This invention has a simple design and provides improved precision machining eccentric parts. Claims of Invention A device for manufacturing eccentric parts on a lathe. containing a yoke mounted about the axis of the spindle eccentric, as well as adjusting the amount of eccentricity sleeve with a scale, so that, in order to simplify the design and improve processing accuracy, the yoke is split with an eccentric hole, on the inner surface of which an annular boring, and the sleeve is made split and provided on the outer surface of the protrusion under the bore of the cage. . Sources of information taken into account during the examination 1. USSR Author's Certificate No. 458397, cl. 23/31/36, 1973. view A