SU498101A1 - Tilt tool head - Google Patents

Description

one

The invention can be used in machine tools to drive an additional tool, periodically working with the main tool.

Known folding milling heads with a spindle, kinematically connected with the spindle headstock milling machine and located in the housing, movably connected with the housing headstock.

Known heads do not allow the spindle of the machine head to work simultaneously with the head spindle.

In addition, it is impossible to introduce the machine head spindle into operation without dismantling the head.

In order to remove the head without dismantling its attachment and the simultaneous operation of the spindle of the machine head and the spindle of the head described, the body of the latter is fixed on the trunnion that is located on the head spindle, and it is assembled with a gear sector, kinematically connected with a roller interacting with a cam mounted on the head of the machine, the second sector being mounted on the head with the possibility of changing its angular position to control the depth of penetration of the tool.

FIG. 1 shows the proposed head, a general view; in fig. 2 is a section along A-A in FIG. one; in fig. 3 - section along BB on

FIG. 1 (head rotation drive); on f | ig. 4 is a section along bb in FIG. one.

The body 1 of the folding tool head is fixed on the front axle 2 of the spindle 3 headstock and secured against axial displacement by the bar 4 (FIG. 2) rigidly attached to the body 5 of the headstock. The housing 1 houses the spindle 6 of the head connected to the spindle 3 of the headstock by means of a gear 7. The case 1 is provided with a toothed sector 8, which is in engagement with the toothed sector 9 (Fig. 3) of the head rotating actuator, located on the shaft 10.

The bracket 11 is rigidly fixed at the end of the shaft 10. To adjust the depth of insertion of an additional tool by changing the center-to-center distance Mc between the part and the tool fixed in the head, bracket II is fitted with a finger 12, which goes into the groove of the toothed sector 9. Angular position of the sector 9 relative to the finger 12 is installed with adjusting screws 13 and fixed with nuts 14. The gear sector 9 is housed in the housing 15, which is fixed to the housing 5 of the machine.

The housing 16 of the drive rotation of the head is fixed “on the housing 17 of the main headstock sled. In the housing 16 is placed the toothed sector 18 of the drive rotation of the head. The toothed sectors 9 and 18 are connected by a shaft 10, the slotted end of which passes through the axial opening of the toothed sector 18.

Thus, the housing 15 with the housing 5 of the headstock and the head have the possibility of axial movement relative to the housing 16 for mounting the head to the size of the workpiece. The toothed sector 18 is associated with a rod-rod 19 provided with a lever 2 attached to an axis 21. One arm of the lever 20 is movably fixed to the end of the rod-rod 19, and the other shoulder is equipped with an axis 22, which roller 23 sits on.

In order to ensure constant contact with the profile surface of the rotating cam 24, which controls the rotation of the head, in order to introduce and remove it from the cutting zone, the roller 23 is compressed by the spring 25 (Fig. 1), kinematically connected to the roller 23, the chain of the drive for turning the head. A spring 25 is mounted on the end of the roller 26, the other end of which is movably connected to the head body 1 by means of an axis 27. A roller 26 with a spring 25 is placed in a body 28 fixed in a bracket on the main head body 5. The spring 25 is pressed by the nut 29, which regulates the force of pressing the roller 23 to the surface of the cam 24.

The head works as follows.

The roller 23 (fig. 1) is pressed with a constant force to the cam 24. The cam 24 has a shaped surface, the shape of which is determined by the necessary cycle of operation of the hinged head, depending on the operation of the tool fixed in the spindle of the machine head.

When the cam 24 is rotated, the roller 23, which is in contact with it, o-start through the cam 24, acts through the lever 20 on the rod bracket 19, which by sector 18 rotates the shaft 10 with sector 9 fixed on it (Fig. 3). Sector 9 is in constant engagement with sector 8 and previously

is oriented relative to it with a finger 12 and adjusting screws 13. When setting up the device to the embedment depth of the tool, the screws 13 move the finger 12 into the slot 9 of the sector 9 to the right or left by turning the head body around the spindle of the headstock to change the center-to-center distance between the workpiece and tool heads.

The rotation of sector 9 under the action of the cam 24 on the roller 23 causes the hinge body 1 to turn around the headstock of the machine 5, thereby introducing the tool into the cutting zone and carrying out its working feed. The removal of the head from the workpiece is also carried out: the roller 23 rises through the cam 24 and, through the above described circuit, rotates the body 1 and removes the head from the cutting zone. The working surface of the cam 24 must have as many lifting and lowering sections as many times along the length of the part is machined with a tool head.

Claims (1)

Invention Formula Hinged tool head with a spindle kinematically connected with the spindle of the milling machine headstock, having a trunnion and located in a housing movably connected to the headstock body, characterized in that in order to ensure the head retraction without dismounting its attachment and the simultaneous operation of the spindle headstock machine and the head spindle, the case of the latter is fixed on the pin, and is equipped with a drive for its rotation around the headstock spindle, made in the form of sectors, one of which is fixed on the head body, and the other is kinematic and coupled with a cam mounted on the headstock of the machine, wherein the second sector is set to headstock capable of changing its angular position to adjust the tool infeed depth.