SU1127700A1 - Multispindle drilling head - Google Patents

Abstract

A MULTI-SPINDLE BORING HEAD, in the case of which there is a shank intended for communication with the machine pinch, a tool holder with cylindrical rollers installed at it at an angle to the tool axis and mounted on the latter with tapered rollers that can be cooperated with tools; that, in order to improve the reliability and manufacturability of the head, the latter is equipped with a glass mounted on the shank and the latter covered by additional tools and rollers mounted for radial movement, with holes for accommodating the locking and adjustment elements inserted into the head, intended to interact with the tool: ga- and. and the tapered rollers are mounted to interact with the glass. D, IsD

Description

The invention relates to the field of metal cutting, in particular with regard to devices intended for use in drilling machines.

A known multi-spindle drilling head, in the body of which a shank is placed, designed to communicate with the machine spindle, a tool holder with cylindrical rollers mounted at an angle to the tool axis and arranged on the latter with tapered rollers that are interoperable with tools 1

The disadvantages of the known head are low reliability and manufacturability due to the large number of complex parts in its design.

The purpose of the invention is to increase the reliability and manufacturability of the head.

This goal is achieved by the fact that a multi-spindle drilling head, in the body of which there is a shank intended for communication with the machine spindle, a tool holder with cylindrical rollers installed at it at an angle to the axis of the tools and mounted on the latter conical rollers mounted with the possibility of the tools are additionally equipped with a shank mounted on the shank with the possibility of movement and the latter covered by additional tool holders and The blades are installed with the possibility of radial movement, with holes in the housing for accommodating the locking and adjusting elements inserted into the head, designed to interact with the tools, and the tapered rollers are mounted with the possibility of interacting with the glass.

FIG. 1 shows a multi-spindle drilling head, a longitudinal section; in fig. 2 shows section A-A in FIG. one; in fig. 3 is a section of CC in FIG. 2; in fig. 4 a section dd in fig. 2

The multi-spindle drilling head comprises a housing 1 made of two parts (external and internal) interconnected, for example, by means of a thread. The outer part of the housing 1 has radial grooves and is attached to the machine spindle, for example, by means of a yoke, and the inside is a sliding bearing case for tools 2 and is provided with radial grooves for individual cassettes 3 (FIG. 3), in which on cylindrical rollers 4 under angle to the axis of the tools 2 are installed tapered rollers 5. In the holes of the housing 1 under the tools 2 installed adjusting and locking elements, such as screws 6 and springs 7, and the thread direction of the screws 6 opposite to the direction rotated tools 2. Cassettes 3 with rollers 5 are installed in the housing grooves with the possibility of radial movement and linear contact of each roller 5 with a pair of tools 2, as well as with the inner surface of the cup 8 installed in turn, for example, by means of a thread on the conical shank 9 with axial movement and fixation by means of a nut 10. A shank 9 is rotatably rotatable by means of a bearing 11, mounted in the inside of the housing 1.

The multi-spindle drilling head works as follows.

The torque from the spindle of the machine through the shank 9, the barrel 8 and the tapered rollers 5 is transmitted directly to the tools 2. The housing is made detachable for pre-setting for a predetermined torque. To this end, the external and internal parts of the body can be connected by thread or on any fit.

After the presetting, manual adjustment is made to the specified torque. To do this, it is necessary to loosen the nut 10 and, rotating the cup 8,. move it along the thread of the shank 9. At the same time, if the cup 8 moves upwards, then the transmitted torque decreases. If it moves downwards, the torque increases, as the tapered rollers will be pressed against the tool shank with a greater force with the cone of the glass 8. Equal adjustment of the tool 2 is preliminarily adjusted by rotating the screws 6 with a screwdriver.

Thus, the use of the proposed head will allow drilling of a group of blind, holes with a small center-to-center distance Amtn DcB-f, where Amin is the center-to-center distance between the holes; Dev - drill diameter; , 5 mm is the thickness of the web between the holes, and the diameter of the tool can be any.

FIG. 2

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Claims (1)

MULTI-SPINDLE DRILLING HEAD, in the housing of which there is a shank intended for communication with the machine spindle, a tool cassette with cylindrical * rollers installed in it at an angle to the axis of the tools and located on the last conical rollers installed with the possibility of interaction with tools, characterized in that; that, in order to increase the reliability and manufacturability of the head, the latter is equipped with a nozzle mounted on the shank with the possibility of movement and the additional cassettes for tools and rollers covered by the latter, mounted with the possibility of radial movement, and the holes are made in the housing for accommodating the locking and adjusting elements introduced into the head, designed to interact with tools, and tapered rollers are installed with the possibility of interaction with the glass. 2 Figure 1