SU1207633A1 - Multispindle automatic bar lathe - Google Patents

Description

one

FIELD: machine tool industry.

The aim of the invention is to expand the technological capabilities of the machine while simplifying the design by improving the accuracy of improving service conditions, installing unified assemblies and ensuring automation of unloading operations.

FIG. 1 shows a machine, a general front view; in fig. 2 is a view A of FIG. one; in fig. 3 - view. B in FIG. 2; in fig. 4 - cyclogram of the machine; in fig. 5 is an additional layout diagram: calipers on the machine.

The machine contains a frame 1 with a case 2 installed on it, in which a rotary spindle unit 3 is mounted with collet chucks for machining bar parts on one side, with which a npytKOB support pipe unit and a bar store (not shown) are connected to the rear and additional swivel spindle unit 4 for processing parts from the second side with cam (or collet) chucks for securing piece blanks. In the machine bed are placed unified rotation drives 5 and 6; spindles of rotary spindle blocks 3 and 4. On the front surface of housing 2, an auto-operator is mounted, the contents of a manipulator 7 are designed to grip the part cut off in the rotary spindle unit 3 and transfer it to the tilter 8, and a manipulator 9; after turning it on ISO to the cartridge of the swivel spindle unit 4 for machining parts from the second side. Cross guides 10 and I with turret heads 2 and 13 are located on the guide frame 1, and cross guides 16 and 17 with guide tool holders 18 and 19 are located on guide bars 14 and 15. The spindles 20 of both rotary spindle units are installed in unified , sub- 5: pipnikov knots 21 and 22, At the rear ends of the spindles 20 are installed: arivodi 23 clamping chucks i: gears 24, located in 07633; 2

meshing with the central gear 25 of the drive of rotation of the spindles of the rotary spindle unit. Swivel spindle axis

from unit 4 for processing parts with

the second side is parallel to the axis of the rotary spindle unit 3 and is located above it so that the line connecting the axes of both rotary

10 colors: blocks, inclined to the horizontal at an angle of 30 - 73,. bed 1 is inclined and parallel to this line. Swivel spindle blocks 3 and 4 have a common front

(5 surface of the housing 2. The rotary spindle blocks 3 and 4 are duplex, and the axes of all spindles in the working position are located in the same plane.

2Q A variant of the automaton is possible with additional supports 26 and 27, equipped with swivel tool holders 28 and 29-.

Spindles with calipers with

25 revolving heads and swivel tool holders form the working positions I, II, IV and IV of the machine. Position I is designed to feed a bar to the desired length and to machine parts with a cross support 10 with a turret 12. The position is used for machining parts using a cross support 16 with a turning tool holder 1B and for picking the cut off

 detail manipulator 7. Positions

it is intended for installation and fixing of a part machined on one side in a chuck of a rotary spindle unit 4 for machining parts from the second side and machining of parts using a cross support 1 7 with a rotary tool holder 19. Position IV is used for machining parts with a cross support 11 with a revolving head 13 and to remove the work piece from both sides.

The work of the machine is as follows.

 In position 1, the bar is fed to the desired length, after which the rotary spindle unit 3 is rotated by 180. In position 1, the bar is again fed to the required

55 length, and in position P - processing

first detail. The swivel spindle unit 3 is rotated again by 180. In position 1 it is processed

thirty

40

3

 first part, and in position P - the second part. After the rotary spindle unit 3 is rotated by 180 ° in position 1, the second part is processed, and in position I, the first part is seized and captured by the manipulator 7. Manipulator 7 transfers the part to the tilter 8, where it turns 180, is gripped by the manipulator 9 and is installed in the chuck of the rotary spindle unit 4 for machining parts from the second side in the position Sh. The workpiece is clamped in the chuck. After turning the rotary spindle unit 4 to 180, the second part is installed and clamped, and the first part is processed at position IV. Then, the rotary spindle unit 4 is rotated by 180 °. In position W, the first part is machined, and in position IV, the second part is machined. After turning the rotary spindle unit 4 by 180 in position W, the second part is machined, and in position IV, the part is machined from both sides.

FIG. 4 shows the cyclograms of the machine for frequency processing of parts from two sides with the number of transitions requiring two turns of the rotary spindle units and 4, according to which the following symbols are adopted: O - basic transitions; a - auxiliary transitions; numbers and letters in circles and rectangles denote: numbers in the numerator - the sequence number of the main transitions, numbers in the denominator - the sequence number of the parts to be processed, letters in the numerator: PP - bar feed; 3 - capture and removal of the workpiece processed from the first side from the working position; PKZ - transfer of the part to the tilter, tilting the part on, gripping the part in the tilter; UZ - installation and clamping parts in the chuck W working position; С - removal of the part machined on both sides in the IV working position.

The number of revolutions of the rotary spindle blocks for processing each

07633

The sides of the part can be different. The processing of two consecutive parts can be done both by turning the J revolver heads and turning tool holders with one indexing of the rotary spindle blocks, and due to the turning of the rotary spindle blocks with one indexing turret

10 heads and swivel: tool holders. As can be seen from the review of the cyclogram of the machine (Fig. 4), the number of working positions at which processing is simultaneously performed

15 parts, ranging from 2 to 4.

The calipers are controlled by means of numerical control devices (or numerical control devices and cyclic program control devices).

In the embodiment of the machine with additional calipers 26 and

5 27 with rotary tool holders 28 and 29, machining of parts in position 1 is carried out with the help of a support 10 with a turret 12 and a support 26 with a rotary tool holder 28, and in position IV with a support 11 with a revolving head 13 and a support 27 with a rotary toolholder 29.

The proposed design of the machine 5 makes it possible to expand the technological capabilities of the machine by rotating the part during processing from the second side, increasing the accuracy and rigidity of the machine structure, equipping it with a numerical control device, and also improve the service conditions and conditions for chip removal from the working area, simplify machine, increase the level of its unification. When the machine was built into an automatic line, prerequisites were created for using the gravitational method of transporting parts and subsequent processing equipment due to the upper position of the removed part of the machined part.

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207633

View 5

Fig.Z

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Drafting positions

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FIG. four

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FIG. five

Claims (2)

1. A MULTI-SPINDLE BAR AUTOMATIC MACHINE, comprising a rotary spindle block mounted on a bed in a housing for machining parts on one side, a spindle rotation drive, an additional rotary spindle block for processing parts from the cut side with a spindle rotation drive, a device for turning on 180 ° and transferring the cut parts to an additional spindle unit for processing parts from the side of the segment, characterized in that, in order to expand technological capabilities while simplifying the design of the machine, both rotary spindle units made with two spindle units with unified drives are located in one housing with a common front surface, and the axis of all spindles are located in the same plane. 2. Automatic pop. 1, distinguished by the fact that the bed is made of an inclined and parallel line connecting the centers of the rotary spindle blocks. SU „„ 1207633 1 Ϊ207633 '2