SU1294500A1 - Device for drilling holes in panels - Google Patents

Abstract

The invention relates to a machine tool industry, namely to devices for drilling holes in slabs of hard-to-machine material. The aim of the invention is to increase productivity by increasing the vibration resistance of the material in the treatment area. On the machine spindle box 2, the hydraulic cylinder body 1 is fixed with a hollow rod 3, inside which the working spindle 14 of the machine with the tool 15 passes. At the end of the rod 3 there is a spherical tip 7, surrounded by a hinge support with legs 13 on the bottom part 8. With one n | SP

Description

side of the machined plate 16 is placed lining 17 with studs 18. Before drilling, the support is lowered onto the plate being machined and pressed by legs 13 to the product by means of a hydraulic cylinder. This force closes on

one

The invention relates to machine construction, and more particularly to devices for drilling holes in ax from a difficult-to-work material .5

The aim of the invention is to increase productivity by increasing the vibration resistance of the processed material in the treatment area.

FIG. 1 shows a device, an axial section J in FIG. 2 is a view A of FIG. one.

The device includes a housing of a hydraulic cylinder, which is fixed by a flange to the spindle box 2 using: the mounting of the seat of the outer cage of the spindle, located on the traverse of a two-post coordinate boring machine. The hydraulic cylinder is equipped with a hollow rod 3 with a piston 4 and fittings with high-pressure hoses 5 and 6, which connect the two cavities of the hydraulic cylinder with an autonomous hydraulic station equipped with a remote control and an actuating and regulating hydraulic apparatus (not shown). A spherical tip 7 is fixed to the rod 3 by means of a threaded joint, the surface of which encompasses the lower 8 and upper 9 parts with internal spherical surfaces 10 and 11 interconnected along a plane; of the connector with screws 12. The lower part 8, which serves as a support, is made with three conical legs 5 13, the supporting peaks of which are equally located circumferentially and equidistant from the axis of the working spindle 14.

As tool 15, a two-tooth countersink made of solid carbide material (material: T5K10) is used, sharpened according to a special geometry (not shown) with subsequent blasting with a shot.

thirty

40

spikes 18 of the lining 17, which creates conditions for the vibration-resistant state of the material being processed in the treatment zone and allows for an increase in the productivity of the treatment. 1 hp f-ly, 2 ill.

five

0

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The plate 16 in the exit zone of the tool 15 rests on an annular lining 17 with three conical spikes 18, the apex angle of which is 90, and their peaks are located on the same diameter equal to the three diameters of the hole being machined. The lining 17 is fixed by protrusions to the plate 16 by adhesive mastic at the places of the holes to be machined according to preliminary marking, after which the plate is gently lowered onto the machine table and fixed with tacks 19. If the location of the holes to be machined on the plate is asymmetrical, then additional liners 17 are installed.

The device works as follows. Fix the housing 1 of the hydraulic cylinder with the rod 3 on the spindle box of a two-post boring machine mod. 2455. Through hoses 5 and 6, the hydraulic cylinder is connected to the hydraulic station. Depending on the diameter of the holes to be machined, the required size of the ball-joint node is installed, and the pads 17 are applied to the plate to be machined (according to the preliminary marking)). Support the plate 8 into the zone of the hole being machined (fix it). on a marking), include hydrostation and establish pressure upon a support of 1,4 GPa (on the manometer). Clamp the traverse of the machine and handle the hole with manual feeding of the instrument within 10-12 mm / min, periodically making it out

; for more efficient cooling and chip release of the treatment area. The spindle speed is set at 45-50 rpm. The proposed device, together with the cutting tool, treated with shot, provides satisfactory processing performance and good durability of carbide tools.

F-Formula

Claims (2)

1. A device for drilling holes in slabs to a jig boring machine containing a spindle head and a working spindle with a tool, including an articulated support with three legs, characterized in that, in order to increase productivity by increasing the vibration resistance of the material being processed in the processing area, it is equipped with a hydraulic cylinder with a hollow rod, the body of which is fixed to the spindle head coaxially with the working spindle, and at the end of the hollow rod a spherical tip is fixed and the hinge support is It is made of two parts, the upper and lower. With spherical inner surfaces covering the spherical tip and rigidly fastened together, the legs of the support are made in the form of cones placed on the lower part of the hinge support, the tops of which are radially circumferential and equidistant from The axis of the working spindle installed in the hollow stem. 2. The device according to claim 1, characterized in that it is provided with an annular lining with tapered spikes, the tops of which are facing the tops of the legs of the hinge support. bida g5 /five Editor A. Vorovich Compiled by A. Gavryushin Tehred L. Oleinik Order 422/10 Circulation 976 VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Production and printing company, Uzhgorod, st. Project, 4 Proofreader T. Kolb Subscription