SU1202741A1 - Multispindle drilling head - Google Patents

Description

 one

The invention relates to metal cutting and can be used in multi-head drilling heads with adjustable center-to-center distance. . The purpose of the invention is the expansion of technological capabilities by smoothly changing the center-to-center distance.

FIG. 1 shows a multispin; a drill head, longitudinal section; in fig. 2 is a section A-A in FIG. 1; in fig. 3 shows a section BB in FIG. one; in fig. , 4 - section bb in FIG. 2

The drilling head comprises a housing 1 attached to the flange 2 of the cartridge slot 3 of the drilling machine. In bearings 4 is installed

 the drive roller 5, made in one piece with the shank 6 connected with shshdelm 3 of the machine. The housing 1 has a guide 7, a naprch-ger-swallow tail, in which frame 8 with an OCHOBHLJM roller 9, 1to, 1g is installed, which holds drills 10 to the drive roller 5 using an elastic element 1 1 and a screw 12. The drive roller 5 has a radial groove 13. In addition, the head is equipped with two 1-pairs and 15 lateral gland rollers, each of which in turn consists of the upper 16 and 17 small rollers. Rollers 16 and 17 are mounted co-, - one to the other with a gap 18 on brackets 19 in guides 20, made on the side surface of housing 1. On brackets 19, rollers 21 interacting with the cam grooves 22, made and frame 8 are made. The drive roller 5 holds the collet 23, and the top side roller 16 - the collet 24.

Preparation for operation of the drilling head is carried out as follows;

Body 1 of the head is attached to the flange 2 of the drilling machine, -a drive roller 5, mounted in pod 02741 -2i

 pinnips 4, rolls its shank 6 to the spindle 3.

The drills 10 are fitted to the I head as follows. 5 Using a screw 12, the frame 8 with the main pressure roller 9 but the guide 7 of the housing 1 is retracted to the extreme left position (Fig. 1). At the same time, the side pairs 14 and 15. suitable for 10 press rollers provide a position in which the distance between them will be minimal. The drills 10 are inserted between the rollers all the way into the flanges 23 and 24 of the rollers 15 5 and 16.

After that, the screw 12, the roller 9 is moved to the right and press the drill 10 to the drive roller 5 through the elastic element 1 1. At the same time, the side 2Q pairs 14 and 15 of the gland rollers prevent the lateral displacement of the drills 10. .n (FIG. 1), inserting it into the cavity of the radial pan 13 and the gap 18 between the rollers 2Q 16 and 17. In this case, the side pairs 14 11 15 of the gland rollers with the brace 19 in the guides 20 by means of the roller 21, interacting with copy groove 22 moves to the other extreme year no,

To replace the drill, it is necessary to move the gland roller 9 to the extreme left position, then perform the operations described above.

The head works as follows.

After installation and drill bit 10 in the head turn on the machine drive. The rotation from spindle 3 is transmitted to pojuiK 5, from which the drills 10 are rotated, adapted to the roller

. 5 main 9 and sideways

rollers 16 and 17.

35

40

45

Aa

2i

2i

FIG. 2

Claims (1)

MULTI-SPINDLE DRILLING HEAD, in the housing of which there is a drive friction roller with a radial groove connected to a rotation drive and a compression friction roller placed on a frame mounted in the horizontal guides of the housing with the possibility of movement and interaction with the elastic element, both rollers are installed with the possibility of interaction with the drill , distinguishing with that, in order to expand technological capabilities by smoothly naming the center-to-center distance, it is equipped with two pairs additional pinch rollers bearing the last brackets with fingers mounted for horizontal movement in additional guides made on the side surface of the housing, the rollers of each pair being aligned with each other so that g is mounted between them relative to the groove of the drive roller pinch roller, and in the frame there are copier grooves for placing the fingers of the brackets. FIG. ! SU, „1202741