SU1696162A2 - Collet chuck - Google Patents

Abstract

The invention relates to the field of metalworking and can be used to secure the blanks. The purpose of the invention is the expansion of technological capabilities by increasing the range of fixed blanks. On the case 2, a sleeve 3 is mounted for mounting the cup springs 4 and a cover 9 with protrusions between which spring-loaded proppant elements are arranged, made in the form of truncated pyramids 6 mounted on the fingers 7, and in the case opening there is a collet 10 in contact with the clamping cone 11 of the flange mounted on the sleeve 3. On the flange, the legs 14 are fixed with inclined grooves and the cams 13 installed in them. When air is supplied to the pneumatic cylinder 18. the piston 17 moves the sleeve 3 and the flange with the clamping cone 11, expands the collets 10 and the cams 13. After the workpiece is installed, air is discharged from the pneumatic cylinder 18 and the force of the springs 4 is used to secure the workpiece. 2 hp f-ly, 7 ill.

Description

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The invention relates to the field of metalworking, can be used to secure the workpieces, and is an improvement to the known collet chuck. St. No. 1444092.

The purpose of the invention is the expansion of technological capabilities by increasing the range of fixed blanks.

FIG. 1 shows the cartridge, a general view; in fig. 2-node I in FIG. 1 enlarged; in fig. 3 is a view A of FIG. one; in fig. 4 is a view B in FIG. one; in fig. 5 is a sectional view BB in FIG. one; in fig. 6 is a view of FIG. one; in fig. 7 — node I in FIG. 1 enlarged for uncoupled jaws.

The cartridge contains a swivel washer 1. consisting of two parts for quick fastening it on the spindle (on new machines it can be made integral and installed on the spindle during installation), body 2, sleeve 3 for mounting the cup springs 4 and squeezing springs 5, wedging elements 6 in the form of truncated pyramids mounted on the fingers 7. The spacer ring 8, the lid 9 with a protrusion are fixed on the housing 2, and the collet 10 is installed in the housing opening, a flange with a clamping cone 11, a lock nut 12 on the sleeve 3. Cams 13 and guides Toyko 14 placed on the flange of the clamping cone 11 by means of biscuit 15 and the locking pin 16 serves to fix the collet 10.

The cartridge works as follows.

During the stopping of the cartridge, the proppant elements 6 by the springs 5 are pressed on the fingers 7 to the center, freeing the groove

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between the inclined protrusions of the sleeve 3 and the cover 9, which is rigidly connected to the housing 2. After supplying compressed air, the piston 17 of the pneumatic cylinder 18 (conventionally shown in Fig. 1), abutting into the sleeve 3, moves it to the right together with the flange fixed on it with a clamping cone 11 and guides 14 mounted on it with protrusions made on the side surfaces (see Fig. 3) at an angle to the axis of the cartridge equal to the angle of inclination of the collet of the collet 10, interacting with identical inclined grooves on the side surfaces of the cams 13, T -shaped projections to which are installed (see, fig. 4) in the T-shaped grooves of the lid 9. The workpiece is unfastened. With the help of a manipulator or a robot, the finished workpiece is removed. The next one is installed, then compressed air is discharged from the pneumatic cylinder and pre-compressed disc springs 4, moving the sleeve 3 and the flange with the clamping cone 11 and the guide racks 14 fixed on it, which move the cams 13 radially, to clamp the workpiece. At the moment of the start of rotation, the proppants 6, due to centrifugal force, deflection of the spring 5 along the guide fingers 7, move to the periphery, fit into the groove between the inclined projections of the cover 9 and the sleeves 3, wedge the moving and stationary parts of the clamping mechanism, increasing the clamping force. The collet 10 is fixed relative to the housing 2 by means of a finger 16.

The lock nut 12 serves to fix the split peripheral part of the flange with the sleeve 3. During the replacement of the cams 13, the lock nut -12 is screwed along the sleeve 3 to the left.

The adjustment of the cams 13 to the required size is carried out according to the standard set in the collet 10. To secure the blanks on the outer surface, the side surfaces of the grooves of the cam 13 and the projections of the guide pillars 14 are made in the same direction as the cone-forming collet, and to secure the blanks on the inner surface, the side the surfaces of the grooves of the cams 13 and the protrusions of the guide posts 14 are made

oppositely directed towards forming a cone collet.

Claims (3)

1. A collet chuck for auth. St. No. 1444092, characterized in that the purpose of expanding technological capabilities by increasing the range of fixed blanks, the cartridge is equipped with removable cams with T-shaped protrusions on the ends, and on the side surfaces of the cams there are inclined grooves, the angle of inclination of which side surfaces is equal to the angle of the taper collet, and fixed on the flange of the clamp cone guide posts with inclined projections designed to interact with said cam grooves, and i-shaped grooves in the lid designed to accommodate they Tobraznyh cam lobe. 2. A cartridge according to claim 1, characterized in that, in order to secure the blanks along the outer surface, the side surfaces of the cam slots and the protrusions of the guide posts are made in the same direction with the direction of the cones forming 3. Cartridge according to claim 1, characterized in that, in order to secure the blanks according to the inner surface, the side surfaces of the grooves of the cams and the protrusions of the guide posts are made opposite to the direction of the taper-forming collet. about 8. 7 5  k 13 12 B FIG. 2 MA and Fm.z 8 id 5 14 15 Fm.4 Fb 1696162 J Fml