SU1154061A1 - Metal-cutting machine - Google Patents

Abstract

1. METAL CUTTING MACHINE, for example, milling and boring, containing a stand, on the vertical guides of which there is mounted a movable body of the spindle head with a rectangular cut,: the rotational drive casing of which is connected to the slider, a sliding spindle located inside the worker with the drive of its movement, characterized in that, in order to simplify the design and turn torsionally The first rigid spindle, the supports for the slider guides, are made with force closure and are arranged in pairs n 15, v-. .-,: ,,,; A: gSBSKOTEKA along the upper and lower ribs closest to the rails and lower ribs remote from the pillar, and along the upper rim ribs remote from the ramp in the body of the spindle head, along its entire length, there is a notch communicating with a rectangular cut. 2. The machine according to claim 1, wherein the supports for the slide guides are located along the edges of the body of the spindle head and are made as basic supports placed on the vertical and lower horizontal planes of the headstock's edge, and locking power: supports, (L one of which is placed on the horizontal plane at the upper edge of the notch, and the other two are along the lower edge that is remote from the stand. 3. The machine according to claims 1 and 2, characterized in that the sweeping power supports are made in NI form of spring-loaded rollers. 4. Machine p About pp. 1 and 2, which is due to the fact that the drive of movement of the sliding spindle is installed in tandem with the case of the drive of rotation of the spindle.

Description

The invention relates to machine tools, mainly heavy and unique walls with sliders, such as milling and milling and boring, intended for high-performance roughing and finishing.

Metal-cutting machines are known that contain a rack, on the vertical directions of which a movable spindle head body with a rectangular cutout is mounted, along the edges of which edges are placed adjacent supports for guides of the horizontal rectangular slide, carrying a working spindle, the rotation drive body of which is connected with creeping, retractable spindle, placed inside the worker with the drive of its movement l.

However, in the known machines, a slider of a rectangular cross section is enveloped in front of the body of the spindle head around the entire perimeter of the slider to accommodate hydrostatic bearings in the area of the front support. Therefore, the movement of the slider is limited by the distance between the body of the spindle head in the area of the front onopt i of the slider and the case of the drive spindle rotation when the slider is fully inserted into the spindle head. This technical solution leads to an increase in the distance from the drive housing of the rotational drive to the front end of the slide, increases the weight of the MOBILE nodes and reduces the torsional rigidity of the spindle. The presence of a square hole in the front of the headstock complicates its manufacture.

The purpose of the invention is to simplify the construction and increase the torsional rigidity of the spindle.

The goal is achieved in that the machine supports for the slide rails are made with a power closure and are arranged in pairs along the top and bottom ribs nearest to the rails and the bottom ribs remote from the rack, and along the top rim edges remote from the rack its length is cut, communicating with a rectangular cut.

In this case, the supports for the slider guides are placed along the edges of the body

headstock and are made in the form of basic supports placed on the vertical and lower horizontal planes of the headstock cutout at the ribs closest to the stand and closed power supports, one of which is placed on the horizontal plane at the top edge of the cutout and the other two along the lower

 from the rack ribs.

In addition, the closing power supports are made in the form of spring-loaded rollers.

Moreover, the sliding spindle movement drive is installed in tandem with the spindle rotation drive body.

FIG. 1 shows the proposed machine, front view; in fig. 2 0 view L in FIG. IJ in FIG. 3 shows a section B-B in FIG. one ; in fig. 4 shows a section B-B in FIG. 2

On the base 1 mounted sleigh 2, which is fixed rack 3. On

vertical guides 4 posts 3 there is a spindle head body 5 having a cutout in which a slider 6 is placed with a rotational drive body 7 fixed to it

0 hollow 8 and retractable 9 spindles and 10 retractable spindle drive 9. Drive 10 is installed in tandem to drive housing 7. In the form, a cutout corresponds to a slider 6. In a cutout

5, supports are provided for the guides of the slider 6, which are arranged in pairs along three edges: the upper II, the lower 12, closest to the direction, 4 poles 3, and the lower 13, remote from these guides. Body 7, the drive and the drive 10 are placed along the open rib 14 of the slider 6 in the recess of the housing of the spindle head 5. The notch is formed by planes

5 15 and 16.

Along the ribs 11-13, slider 6 has guide surfaces 17-22. Along the edges of the spindle head (Fig. 2 and 4) are arranged in pairs

0 base 23-25 and the closing 26-28 rolling support - tankettes with cylindrical rollers. The locking supports are pressed against the guide springs 29-31. In front of the bed 1, a header 32 is provided for mounting the article or table with the article.

The machine works as follows. The post 3 on the San x 2 moves in the transverse direction along the bed 1, and the body of the headstock 5 is vertically along the guides 4 of the legs 3. Slider 6 moves in the body of the headstock in the longitudinal direction. The guides 18-20 rest on the base supports 23-25, and the springs 29-31 press against the guides 17, 21 and 22 the closing supports 26-28 and, through them, the slider 6- to the base supports 23-25. The base legs 23-25 determine the position. the slider in the spindle head, regardless of the presence and magnitude of the radial forces and the moment acting on the spindle. The torque from the pinch is transmitted to the slider 6 through the spindle rotation housing 7. This moment is taken up by the basic and closing supports, distributed between the supports of the front and rear edges of the headstock, depending on the longitudinal position of the slider 6. From the sliding spindle 9 to the hollow spindle 8, it is transmitted through the sliding key, and from the hollow spindle 8 to the housing 7 drive rotation spies cases - through the support shaft drive. The actuator 10 of the extendable spindle 9 and the actuator housing 7 are moved in the recess of the body of the spindle head 5 between the planes 15 and 16, therefore, the spindle head is determined by the optimal distance between the supports based on the smallest flexibility of the slider end. The drive housing 7 is mounted at the shortest distance of the front end of the slider 6. This distance is taken somewhat longer than the stroke of the slider. Thanks to this, the length of the slider and the spindle decrease. The proposed machine has the following advantages: the reduced length of the slider reduces the metal consumption of the spindle head, so that the mass of vertically movable units is less than that of machines with a sliding spindle head; The platforms for supports in the housing are polished to fit, which eliminates scraping when the cut-out under the slide is closed, like in a known machine. In addition, the torsional rigidity of the spindle is increased, since its rotational drive is located from the front end of the slider approximately by the amount of its stroke.

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Claims (4)

1. METAL-CUTTING MACHINE, for example, a milling and boring machine, containing a stand, on the vertical guides of which a movable headstock housing with a rectangular cutout is mounted: along its ribs there are adjacent supports for guides of a movable rectangular slider carrying a working spindle, the rotation drive housing of which connected to the slider, a retractable spindle located inside the worker with a drive for moving it, characterized in that, in order to simplify the design and increase the torsional rigidity c. of the spindle, the supports for the slide rails are made with power closure and are arranged in pairs along the upper and lower ribs closest to the guide rails of the ribs and the lower ribs remote from the racks, and a recess is made along the entire upper length of the slide ribs in the spindle head housing along its entire length communicating with a rectangular neckline. 2. The machine according to claim 1, characterized in that the supports for the slide rails are located along the edges of the headstock body and are made in the form of base supports placed on the vertical and lower horizontal planes of the headstock cut at the ribs closest to the rack, and trailing power supports, one of which is placed on a horizontal plane near the upper edge of the cutout, and the other two along the lower edge remote from the rack. 3. The machine according to paragraphs. 1 and 2, characterized in that the closing power supports are made in the form of spring-loaded rollers. 4. The machine for PP. 1 and 2, characterized in that the sliding spindle drive is mounted in tandem with the housing of the spindle rotation drive.