SU610615A1 - Collet chuck - Google Patents

Description

The invention relates to the field of metapages. drawback and can be used to clamp bar material on lathes.

Known collet chuck containing

A glass connected to the clamp drive 11, inside which the collet is placed, is made in the form of tapered clamping jaws connected by a spring ij.

The disadvantage of the collet chuck is the presence of a gap in the junction of the glass and the spindle, which creates a beating of the part relative to the spindle and the fragility of the collet itself.

The purpose of the present invention is to increase the life of the cartridge.

The goal is achieved by the fact that the pressure cup is made in the form of a cut into several. identical BTyjiki segments, inside which the washer is installed and under. spring-loaded plunger with a front spherical end designed to interact with the tapered surface of the clamping jaws.

FIG. 1 shows a cartridge, cut; in fig. 2 - push stack, cut to (J4ir.

3 shows section A-A in FIG. FIG. 4 shows the cup assemblies of the proposed cartridge in FIG. 5, according to arrow B in FIG. four.

In the machine spindle 1, a pressure cup 2, made in the form of a sleeve cut into several identical segments, is placed and connected by means of fingers 3, installed in holes 4, with clamping tube 5, in the opening of which the feed collet 6 is located, connected to feed pipe 7 Inside the pressure cup 2, there are bolts 8, spring O, pusher 10 and cams 11. A nut 12 is screwed onto the spindle 1.

The conical surface 13 of the pressure cylinder is in contact with the conical surface 14 of the cams 11. The cams 11 are made in the form of identical segments covered by a split ring 15. The spacer springs 16 are located between the cams. The end of the cams is tapered with a taper angle ci. o 5 The pusher 10 is made in the form of a hollow stepped sleeve, the right end of which along a sphere of radius C, is measured one time

.. l

press the cams under the action of the housing 9. Springs 16 provide a uniform distance between the cams. The cams 11 have a tapered surface 17 which is in contact with the spherical surface 18 of the pusher 10.

Clamping part 19 occurs when the clamping tube 5 moves to the right, which pushes the segments of the pressure cup 2, compresses the spring 9. The cup segments compress the cams, moving them to the center in the radial direction, and are pressed against the spindle. In this case, all backlashes are selected.

When unclamping, the clamping tube departs

to the left and with your fingers it pulls down the segments of the pressure cup to the left, and the spring 9 simultaneously, through the pusher Jus, springs 16 unclenches the cam 1, all the time they are pressed and the segments of the cup against the spindle. The washer 8 - under the action of the spring 9 during the retreat of the pipe 5 to the left ensures the simultaneous departure of the segments of the glass to the left.

The use of a cut glass allows you to extend the life of the cartridge, simplify its design.

Claims (1)

1. Adaerov M.A. Zazhimn © devices for turning and circular grinding machines, Mashgiz, 1948 p. 168,169, fig. 224. / X / x /////, hl f W.A. / 17 L ffue.if Buff in tptji.S