CS238560B1 - Device for automatic tip exchange with front carrier - Google Patents

Abstract

The device enables automatic replacement of the tip with a front carrier in machine tools for shaft workpieces, clamped into the tips behind the centering holes. The essence is to place the tip with a front carrier in the holder, which allows automatic clamping into the machine spindle and automatic exchange between the machine spindle and the magazine. The machining center is equipped with a device for automatic clamping of the holder with the tip in the spindle, a magazine for storing tips with a carrier of various sizes, placed in the holders, and a manipulator for replacement. It can be used especially in machining centers for shafts, where high automation is required, especially automatic adjustment to another workpiece.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic gripping tool with a front gripper used in a machine tool, wherein a shaft-shaped workpiece is clamped from a centering hole to the spikes, the spindle tip being provided with a front gripper.

Currently, when adjusting a machine tool to a new workpiece, it is necessary to manually replace the tip with the front gripper and there is no known device to automate this work.

SUMMARY OF THE INVENTION The point of the invention is that the tip with the front gripper is located in a holder that allows automatic clamping into the machine spindle and automatic exchange between the machine spindle and the magazine. The machine tool is equipped with a device for automatically clamping the holder with the spike in the spindle, a magazine for storing the spikes with a carrier of various sizes located in the holders and a manipulator for changing.

The requirement of automatic tip gripping with the front gripper is particularly urgent for unmanned machines that are included in automated manufacturing systems where complete automatic adjustment of the machine is required when production is transferred to a new workpiece. In conventional machine tools, the device reduces the time of non-adjusting and thus allows greater machine utilization.

The device is schematically shown in connection to a lathe machine in the accompanying drawings, wherein Fig. 1 is a front view of the machine connected to the machine; and Fig. 2 is a cross section of the machine. The connection between Fig. 1 and Fig. 2 is that in Fig. 2, section A-A is shown in Fig. 1:

on the machine tool 2, the workpiece 6 is clamped by centering pits into the tip 3 in the tailstock 14 and the tip 4 with the front carrier,

23B 560

In the holder 6, held by the device 17, it is automatically clamped in the spindle 6. A manipulator 4 is provided to the machine tool with a mechanical hand 4 mounted rotatably and axially displaceably on the support 10. Within the reach of the mechanical hand 9 there is a drum magazine 12 comprising a plurality of tips 4e a front gripper of various sizes clamped in the holders 5 '.

The holder and apparatus £ XRD automatic up1nán1 _t drum magazine 12 may být1 conducted in any known manner and j1ž employed during handling and storage of instruments and therefore not described.

The machine tool 4 shown is a turning center with a headstock 13, a tailstock 14 on the supports 15 that performs a sliding movement on the vertical bed 16 with the workpiece 2. A transverse support 17 with a tool head 18 is attached to the vertical bed 16. only for the sake of clarity and is not an object of the invention.

The operation of the device according to the invention also takes place: after stopping the spindle 6 of the machine tool 1, remove the workpiece 2 from the tines 3 and 4, the mechanical hand 9 grips the holder 5 clamped in the spindle 6 in which the tine is located. 4.with a front carrier to be replaced. The automatic clamping device releases the holder 5, the mechanical hand 9 by the sliding movement removes the holder 5 from the spindle 6 e by the sliding movement of the support 10 and by its own rotary and sliding movement stores it in the drum magazine 12. 10 away from the stored holder 6. The drum of the new cartridge 12 is rotated to prepare the new desired tip with the front flap to the exchange position. The replacement is carried out in a similar manner.

The object of the invention can be successfully applied to machine tools for shafts where high automation is required, in particular automatic adjustment to another workpiece.

Claims (2)

OF THE INVENTION 238 560 An apparatus for automatically replacing a tip with a spindle, for example in a machine tool, where the shaft-shaped workpiece is clamped by centering pits into the spikes in the tailstock and the spindle, and the spike in the spindle is provided with spindles a spindle on the workpiece, characterized in that the tip (4 / s of the front carrier) is housed in the holder (5) held by the automatic machine in the spindle (6) and the machine tool (1) is equipped with a drum magazine Containing at least one tip (4) with a front carrier in at least one holder (5), and between the machine tool (1) and the magazine (1), a manipulator (8) is provided holder / 5 / between drum · cartridge · / 12 / and spindle ·· / 6 / · 2. Apparatus according to claim 1, characterized in that the manipulator (8) is constituted by a support (10) equipped with a non-shank hand (9) rotatably and retractably mounted.