SU1340972A1 - Multispindle machine with automatic tool change - Google Patents

Abstract

The invention relates to a machine tool industry and can be used in the construction of multi-spindle machines, in particular horizontal lathe multi-spindle machines with automatic tool change. The purpose of the invention is to simplify the design of the machine by automatically changing tools on all the tool holders mounted on the slide for longitudinal and transverse machining using one automatic tool changer. The machine contains a rotary spindle unit, supports for the longitudinal 5–9 and transverse 10–11 machining with tool holders, an automatic tool changer, and a tool magazine 25. A guide 16 provides the specified device with access to all the toolmakers of the machine. The position of the device on the guide is controlled by the sensors 24. The movement and fixation of the guide is carried out by means of the transfer screw. 1 hp f-ly, 4 ill. o SL 2.1 25 co 4 O SB 1chE 26

Description

The invention relates to a machine tool industry and can be used in the construction of multi-spindle machines, in particular horizontal multi-spindle automatic lathes with automatic tool change.

The purpose of the invention is to simplify the design of the machine by automatically changing tools on all tool holders mounted on the supports for longitudinal and transverse machining using one automatic tool changer.

FIG. 1 shows a multi-spindle machine with an automatic tool change, general view; in fig. 2 - the same, top view; in fig. 3 is a section A-A in FIG. one; in fig. 4 is a section BB in FIG. one.

The multi-spindle machine consists of a bed 1, a gearbox 2, a traverse 3, a spindle unit 4, longitudinal supports 5–9 and a transverse 10–14 machining on which tool holders 15 are mounted. The machine is also equipped with a guide 16 that covers the working space of the machine in its cross section the ends of which are provided with rollers in contact with the machine bed, and the central part located above the cross-bar, rests on the lead screw 17 mounted on the output shaft of the gearbox 18, received rotation from the stepper motor 19, mounted on the traverse 3. On the guide 16, the device 20 is mounted for automatic tool change with gripping bodies 21 and 22 and the actuator 23 of reciprocating movement of the device 20 along the guide 16, as well as sensors 24 of the positions of the device 20 automatic tool change in a predetermined working position, each of which is intended to stop the automatic tool changer 20 near a certain working position, respectively, from 1 to IV (VI position loading), controlled by the control system of the station com.

On the side opposite to the loading position of the machine, in the area of the spindle unit 4, there is a rotary tool magazine 25 with a set of replaceable cutting tools 26.

The guide 16 is a hollow collecting rail of rectangular cross section, on the outer surface of which teeth are cut in contact with the gear wheel 27 of the tool changer 20.

The device 20 is centered on the guide with the help of rigidly mounted (adjustable) 28 and spring-loaded 29 rollers, ensuring its smooth movement on the curved sections of the guide (Fig. 4).

The mounting and fixing points of the device 20 are located only on the straight sections of the guide 16.

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The electrical control and power cables connecting the tool changer 20 to the control and power supply system are placed in a single metal hose which, when the device is moved to the upper positions of the machine, is wound on a rotary drum (not shown) located on the machine cross member and unwinds the latter when moving to the lower positions in a known manner.

The cables 30 connecting the sensors 24 to the machine control system are assembled in a separate metal hose equipped with a rotary drum (not shown) located on the machine base 1 outside the working space and fed to the sensors through the lower branch inside the rail 16 (Fig. 4 ).

The machine works as follows.

During the machining of parts, all components and mechanisms of the machine make working and idle movements characteristic of the multi-spindle automatic machine, and the guide 16 is in its initial position outside the working area of the machine from the side of the spindle unit 4.

At the command of a special device (not shown) that determines the need to change the cutting tool, the tool changer device 20, which is in the initial position directly near the tool magazine 25, takes one of the gripping bodies 21 from the last cutting tool 26, which must be installed instead of worn out. Then, using a known turning mechanism (not shown), the gripping bodies 21 and 22 are rotated by 180 ° around the horizontal axis in the direction of the working space of the machine.

The rotation mechanism can be made in the form of a rack-and-pinion gear, hydraulic motor or other known rotation mechanism, in which the driving member is mounted on the body of the tool changer 20.

The tool changer 20 then moves from the tool drive 23 along the guide 16 to the corresponding sensor 24, which determines the position of the machine at which the worn cutting tool is to be replaced. The position sensor of the tool changer 20 of the corresponding working position includes the stepper motor 19, which, through the gear 18 and the lead screw 17, informs the guide 16 a linear movement along the axis of the spindle unit to the zone corresponding to the position of the guide 16 when changing the cutting tool on the longitudinal calipers 5-9 or transverse treatments (in Fig. 1, zone B is for longitudinal calipers, and zone G is for transverse cross calipers).

Next, at the command of the machine control system, the automatic change device 20

The tool 22 is removed by the gripping body 22 from the indicated support and the blunt tool is installed by the gripping body 21 into the tool holder 15 new, delivered to the place of change.

After the signal about the end of the tool change to the machine control system, the stepper motor 19 is turned on, which communicates the direction of the yushi 16 through the lead screw 17 and the gearbox 18 to the linear displacement along the axis of the spindle unit 4 to the initial position. After setting the guide 16 to the initial position, the machine control system receives a command to resume the working cycle of the machine. In the process of mixing, it is directed to her 16, to the initial position, the device 20 automatic tool changer is mixed along it to the location of the tool magazine 25 and sets the gripping body 22 to the free position of the last cutting tool, which is the signal for the end of the tool change cycle.

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Claims (2)

Claim 1. Multi-spindle machine with automatic tool change, with a rotary spindle unit, caliper for longitudinal and transverse machining with tool holders, a device for automatic tool change, installed with the possibility of reciprocating movement from the drive along the guide, and a tool magazine , characterized in that, in order to simplify the construction, the guide is made covering the working space of the machine in its cross section and is equipped with a mechanism reciprocating it to the working positions along the axis of the spindle unit, as well as the position sensors of the automatic tool changer in the positions of interaction with each of the supports. 2. The machine according to claim 1, characterized in that the movement mechanism of the guide is made in the form of a screw-nut pair, the nut being placed on the guide and the screw on the base of the machine rotatably from the drive. 0 fi.h f (-A /eight /9 FIG. 2 27 S-S 20 . ./. 28 2J FIG. Compiled by A. Kotov Editor M. PetrovaTekhred I. VeresKorrektor E. Roshko Order 4388/19 Circulation 785 Subscription VNIIPI USSR State Committee on Inventions and Discoveries 113035, Moscow, Zh-35, Raushsk nab. 4/5 Production and printing company, Uzhgorod, ul. Project 4