RU1784412C - Metal-removing machine tool - Google Patents

Abstract

Usage: mechanical processing of parts, various branches of the engineering industry. SUMMARY OF THE INVENTION: a pivot table, headstocks 3 and 4 with spindles are mounted on the base. Devices with parts 5 are mounted on a table around the circumference. Devices for adjusting the position of the headstock relative to the headstock are mounted on the fixed part 12 X. The headstock 3 and 4 are inclined at an angle close to 30 °. The device is mounted on a flat tile and includes a fixed prism 7, a movable prism with a slider 8 and a base pin 9. The free end of the slider has a vertical platform 10, with which the stop 11 is mounted, mounted on the movable part of the milling head 3 and 4. The cutter, the radius of which take into account that it is placed in the device between prisms 6 and 7. The device for setting the overhang of the cutters is placed on the circumference of the placement of devices with machined parts. The device consists of a lower part and an upper movable part, which is based on a fixed part and has measuring areas that coincide with the processing plane of the parts. 1 s.p. f-ly. 8 ill. (L C vj 00 I y

Description

The invention relates to the machining of parts and may find application in various branches of the engineering industry.

An object of the invention is to increase machine productivity and increase machining accuracy by automating tool settings in each headstock.

For this, in a metal-cutting machine, including a rotary table, placed on the base of the headstock with tool spindles, consisting of parts stationary and movable in the horizontal plane, peripheral devices for machining parts, there are also devices for adjusting the position of the headstock moving part relative to the workpieces, depending on the diameter of the tool used. Each device is made in the form of a prism head mounted on a fixed part of the prism with a finger and a slider movable relative to this prism with an additional prism at one end, a vertically arranged platform on the other and fixed to the movable part of the stop intended to interact with the vertically arranged platform, the prisms and the slider being placed at an angle to the headstock spindle.

In addition, the machine is equipped with a device for adjusting the milling cutters in height, which is placed on the table on the circumference of the arrangement of accessories for parts and is made of two parts: one of which is the lower one fixed to the table, and the second one the upper one is mounted with the possibility of movement relative to the first and made with pads intended for contact with the tool. Each of the parts is L-shaped with a recess for the L-shaped structure of the other part of the device, which is equipped with an eccentric clamp for connecting the above OF DATA parts.

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In FIG. 1, shows a machine, plan; Fig. 1 2 is a view of one of the headstock with a device for adjusting its position relative to the workpiece; 3 - headstock with the device in the tool change position; Fig. 4 is a fragment of a headstock with a device and a mill when setting the position of the movable part of the headstock; Fig. 5 shows a device for adjusting the position of the movable part of the headstock; Figures 6 and 7 show a device for adjusting the tool height; in FIG. 8 - eccentric clamping device

The machine consists of a base 1 on which a rotary table 2, headstock 3 and 4 with tool spindles are mounted. Devices with workpieces 5 are fixed in diameter on the table 2 in diameter. Devices for adjusting the position of the moving part of the headstock are mounted on the fixed part of the headstock 3 and 4.

A device for adjusting the position of the movable part of the headstock is mounted obliquely at an angle close to 30 °, which ensures that the headstock (spindle) moves by an amount equal to d Rfsh-Rf1b, where Rfsh is the radius of the cutter located in the spindle, RF16 of the cutter installed in the device. The specific angle is selected depending on the number of teeth, the size of the regrind of the cutter. The inclination angle of the device depends on the position of the cutter relative to the workpiece, for the headstock 3 processing the outside of the part, the inclination will be opposite to the headstock 4 (Fig. 2) The device is mounted on a flat tile and consists of a movable 6 and a fixed 7 prism Moving prism is additional and represents a part of the slider 8. In the prism 7 there is a base pin 9. In the upper part of the slider 8 there is a vertical platform 10, with which the stop 11, which is mounted on a fixed clock, interacts t x headstock 3 and 4. The headstock has a movement drive including a handle 12 (Fig. 4) with a screw 13 and a nut 14. A milling cutter 16 (Fig. 4, 5), the radius of which must be taken into account, is placed in the device between the prism 7 and prism 6 slider 8

A device 17 for adjusting the milling cutters in height is mounted around the circumference of the fixtures with the workpieces. The device consists of a lower stationary part and 18 (Fig. 7) and an upper 20 movable relative to the lower (Fig. 6). The movable part of the tuning device is based on the stationary part along the plane 21 (Fig. 7) and has measuring platforms 22 (Fig. 6) that coincide with the part processing plane. The movable part is fastened by an eccentric clamp 23 (Fig. 7) located on the fixed part, made with a barrel-shaped roller 24, The movable part of the device has a horizontal shelf 25, which interacts with the roller 24. The fixed part 18 has a horizontal shelf 26, which is the base for the movable 20. i

Work on the machine is carried out as follows. The table (faceplate) of the machine 2 is rotated, for example, along the arrow B To table 2, in the turning zone B, c

the fixtures install parts 5. When moving the table, parts 3 and 4 with tool spindles process the parts. After completing a complete revolution with table 2, parts 5 in zone B are removed and new ones are replaced.

Adjustment of the position of the movable part of the headstock when replacing the cutter in a multi-spindle machine is provided as follows. The turntable is set so that the adjusting device 17 is located under the headstock, on which the cutter will change. At the same time, the movable part of the device 20 is removed, which creates convenience for dismantling the used cutter. The headstock 3 or 4 is retracted to its original position by the handle 12, screw 13. The new milling cutter 16 is mounted on the prism 7, is oriented with the tooth on the base pin 9 and is pressed by the prism 6 of the slider 8. Obviously, the slider 8 and its vertical platform 10 will occupy the position depending on the diameter of the cutter installed. Next, the movable part of the headstock 3 (or 4) is brought by a screw 13 until the stop 11 touches the vertical platform 10. Thus, the position of the headstock (and spindle) is established by the diameter of the cutter, without measuring it. Then the headstock is clamped by known devices (not shown), and the cutter 16 from the device is reset to the spindle.

To adjust the cutter in height, the movable part 20 of the adjusting device is mounted on the plane 21 of the horizontal shelf 26 and pressed against the fixed part 18 by the eccentric mechanism 23 through the roller 24 and through the shelf 25. The direction of rotation of the eccentric 23 is chosen so that the removable part 20 is brought to a stop 19 ( Fig. 8). Then the spindle (pintle mechanisms not shown) is lowered to touch the end of the cutter in the corresponding platform 22, the clamp 23 is rotated and the removable part 20 of the device is removed. Thus, the height adjustment is performed without measurements on one device for all headstock.

The change of cutter ends here, the machine can be turned on.

To ensure the safety of the milling cutter and the removable part of the adjusting device 17 in the cases when the machine is started together with the part 20, structural measures are provided. The pressure roller 24 is made

barrel-shaped, and the point of contact with half of the part 20 is selected in the middle (y) of the whole

devices (FIG. 7). This makes it possible

of the removable part 20, to jump off (upon impact by the milling cutter) towards D, with the corresponding rotation directions of the table 2.

To change the mandrels (with or without the tool), the headstock can be moved to position D (Fig. 3) due to the withdrawal of the slide 8 from the contact with the stop 11.

The proposed metal cutting machine is characterized by a high concentration of operations due to the plurality of machining units mounted around the rotating faceplate. A lot of tools will require multiple changes, therefore, for real multi-spindle machining, the machine is equipped with special devices for adjusting the machine depending on the actual size of the cutter. In this way, an increase in quality and performance is achieved. By

Compared to the technology based on single-spindle milling machines, operating costs are reduced, and the footprint is reduced.

Processing details on the proposed

5, the machine will be produced from a single installation, which solves the problem of stabilizing the shaping process.

Claims (2)

1. A metal cutting machine, including a rotary table, placed on the base of the headstock with tool spindles, consisting of parts stationary and movable in the horizontal plane, located on the periphery of the table 5 devices for machined parts, characterized in that, in order to increase productivity and machining accuracy, the machine is equipped with devices for adjusting the position of the latter relative to the machined parts, depending on the diameter of the tools used, each of which is made in the form of a fixed part grandmas 5 prisms with a finger and mounted relative to the indicated part of the slider with an additional prism at one end and a vertically located platform - at the other and fixed on the movable part of the headstock of the stop, designed to interact with a vertically located platform, while the prisms and slider are placed at an angle to the spindle of the headstock. 5 2. Machine pop. 1, characterized in that it is equipped with a device for adjusting the milling cutters in height, placed on a table on the circumference of the arrangement of parts and made of two parts and an eccentric clamp for their connections, and one of the parts that are designated for contact with the tool is fixedly mounted on the table, automatically, Lp and this, each part is made L-shaped, - the upper one - is installed with a different recess for horizontal possibility movements relative to the element with which the other part is provided first and completed with pads, pre-5 devices ..