SU1761435A1 - Device for tools automatic changing while spindle rotating - Google Patents

Description

The invention relates to the field of mechanical engineering and can be used in CNC machines.

The aim of the invention is to reduce the tool change time by installing the tool in the rotating spindle by providing rotation of the set mandrel from the machine spindles.

1 shows a general view of the device; figure 2 - section aa in figure 1.

The device consists of a two-gripping rotary mechanical arm 1, in the grips of which rollers 2 are installed, fixing the instrumental support 3 with an upper arm 4. One of the rollers is located on the lever 5 and is pressed against the mandrel 3 by the spring 6. Another roller is connected to the shaft 7 a bevel gear pair, the gear wheel 8 of which, mounted on the shaft 7, interacts with the bevel gear 9, mounted on the spindle 10. The shaft 7 by means of a spring 11 has the possibility of axial movement. Instrumental mandrel 3

performed with nasov- to interact with the key 12. fixed on the end face of the spindle 10.

The device works as follows.

The mechanical arm 1 with the mandrel 3 rotates and exposes the mandrel 3 coaxially with the spindle 10. With the axial movement, the mechanical arm 1 starts the conical shaft 3 of the mandrel 3 into the mounting hole of the spindle 10. Touch wheel 3, in contact with wheel 9 (position i) 2 rotating spindle 10, receives rotation and passes it through shaft 7 to roller 2. which drives mandrel 3 to rotate. Speed 3 will be slightly larger than the number of revolutions of spindle 1 3 due to the difference between dmzmetros gear assembly 8 and roller 2. I will mix in axial direction -Lsnie, mehan Comb hand 1 brings the torch of reference 3 to the key 12, which slides along the end face of the pitch 3. Pschada into the latch (position II fmg.2). The mechanical offset of the mechanical arm is compensated for by the axis of the shaft 7 by squeezing.

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11 After gripping the mandrel 3 in the spindle 10, the arm 1 is rotated by the hour hand by 90 °. The roller of the lever 5, compressing the spring 6. To remove the mandrel from the expanding spindle, the arm 1 rotates clockwise by 90 °, the left gripper without the driving wheel 8 is fed to the mandrel 3, and the right gripper with the wheel 8 is brought to the gripping position of the mandrel from the instrumental store. When the left grip is supplied, the lever lever 5 is pressed by the conical groove of the mandrel and when the gripper moves to the position of the mandrel 3, rotates in the spindle 10, rotates the rollers 2. After unclamping the mandrel 3 in the spindle 10, the mandrel 3 withdraws the mandrel 3 from the spindle 10. Further rotation of the arm 1 anti-clockwise through 180 ° brings a new mandrel for loading into the spindle.

Claims (1)

Invention Formula A device for automatic tool change in a rotating spindle, containing a two-gripping pivotal mechanical arm, the tongs of which are made with rollers mounted with the ability to interact with a gripping tool, different In order to reduce the tool change time by installing the tool in the rotating spindle by providing splicing of the set mandrel from the machine spindle, one of the arm grips is provided with an additional roller and a bevel gear pair, one of the elements of which is intended for installation on the spindle, and the other kinematically connected with an additional roller by means of an additionally inserted spring-loaded shaft, the axis of which is located in the same plane with the axis of the mandrel, wherein said shaft is made for limited axial movement. Sgl b1 5 1 7 Fig