SU1404197A1 - Arrangement for working holes - Google Patents

Abstract

The invention relates to the machining of metals by cutting, in particular to the machining of holes with an adjustable feed force. The aim of the invention is to simplify the design. The drilling head is moved along the guides 3 by means of the feed mechanism, which includes the bearing washer 4 with the adjusting screw 5. The spring 6 contacts through the separating washer 1 with the less rigid spring 8, which abuts against the thrust washer 9. The separation washer I is fixed by the bent leaves of II elastic the latch 12, located in the grooves 13 of the cylindrical guides 3. 2 Il.

Description

SL

The invention relates to the machining of metals by cutting, in particular to the machining of holes with an adjustable feed force.

The purpose of the invention is to simplify the design.

FIG. 1 shows a device for processing holes, a general view; figure 2 - the feed mechanism.

The device comprises an electromagnet 1 connected to a drilling head 2 mounted on cylindrical guides 3, on which a feed mechanism containing a bearing washer 4 with an adjusting screw 5 is placed, a more rigid spring 6 contacting through a separating washer 7 with a spring 8 which The other end rests on the thrust washer 9 fixed by nuts 10. The separating washer 7 is fixed by bent petals 11 of an elastic retainer 12 located in the grooves 13 of the cylindrical guides 3 and made in the form of a spring,

The device works as follows.

When the electromagnet 1 is turned on, the drilling head 2, moving along the cylindrical guides 3, moves the support washer 4 with the adjusting screw 5 and compresses the more rigid spring 6, the support of which is the separating washer 7 fixed by the bent petals 11 of the spring retainer 12 located in. the groove 13 of the cylindrical directions l to dix 3, while providing the necessary free-wheeling force, at which the tool contacts the workpiece,

When the spring 6 is compressed, the adjusting screws 5 of the support washer 4, when moving along the spring clamps 12, lower them and at the moment of contact of the cutting tool and the workpiece are disengaged from the separating washer 7

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spring tabs 11 of the spring clamp 12. Thereafter, the compression force is transmitted to the spring 8 of lesser rigidity, which provides the necessary axial cutting force. Upon further movement of the support washer 4, the adjusting screws 5 freely pass between the bent petals 11 of the spring clamp 12. At the end of drilling, the electromagnet 1 is turned off and the drilling head 2 under the action of the spring 8 returns to its original position. All elements of the device occupy the initial position.

The adjustment of the freewheeling force of the tool is carried out by selecting the spring 6, the adjustment of the required moment of actuation of the spring retainer 12 by adjusting screws 5, the adjustment of the axial cutting force by nuts 10 and the voltage applied to the electromagnet 1.

Claims (1)

Invention Formula A device for machining holes, comprising a tool head feeding mechanism and cylindrical guides for its movement, which is such that, in order to simplify the construction, the feeding mechanism is designed coaxially mounted with supporting and separating washers on cylindrical guides for interacting with a separating washer of two springs of different stiffness, installed in the screws supporting washer, and placed in a groove, which: is made in cylindrical directions The elastic clamp is designed to interact at one end with a separating washer and at the other end with screws, with a spring of greater rigidity installed in contact with the support washer.