SU1636140A1 - Power pack - Google Patents

Abstract

The invention relates to machine tools and can be used in aggregate machines. The purpose of the invention is to simplify the construction by simplifying the implementation of the kinematic connection of the quill with the drives of the accelerated and working feed. When pressure is applied to the cavity of the power cylinder 16 tons ha 12, rigidly connected to it with one end, it provides an accelerated supply of quill 2. with which it interacts with the other end. In the interaction of the stop 27 with the latch 22, the electric motor 4 is turned on, which ensures the rotation of the tool spindle 3 and the transfer of the accelerated supply of quill to the working one. At the end of the working feed, the stop surface of the bracket 18, in contact with one of the stops 21, stops the rotation of the electric motor 4. Then the quill 2 returns to its original position. 1 il.

Description

The invention relates to machine tools and can be used in modular machines.

The purpose of the invention is to simplify the design by simplifying the kinematic connection of the pintles with drives of accelerated and working feeds.

The drawing shows a kinematic diagram of the power head.

The power head consists of a housing 1, a quill 2, inside of which a tool spindle 3 is mounted, driven by rotation from an electric motor 4 through a gear system of gears 5: 6-7, 8 -9, 10-11. The rod 12 is made with a splined end 13, which is installed inside the corresponding splined hole of the gear reducer 5 and connected via a sleeve 15 to the non-rotating rod of the power cylinder 16. Moving the rod of the cylinder 16 provides an accelerated feed of the pin 2. The other end of the rod 12 is made in the form of a screw 17, which with the pinole 2 fixed on the bracket 18, the nut 19 forms a threaded pair, which provides the pinole 2 working feed during rotation of the electric motor shaft 4. A drum 20 is fixed on the head housing 1 with stops 21 in contact with ornoy surface 2 quill bracket 18 at the end of its displacement, '

To relieve the working feed force from the rod of the power cylinder 16, the power head is equipped with a spring-loaded clamp 22, which, through the teeth of the rack 23, is connected through the gear 24 to the auxiliary rack 25 in contact with the rod of the power cylinder 26. At the end of the accelerated feed, when the rod of the cylinder 16 moves to the left, the latch 22 engages with a stop 27 fixed on the housing of the cage 15 and is disengaged by the power cylinder 26 before the accelerated removal of the pintles 2 to its initial position.

The power head operates as follows.

Pressure is applied to the rodless cavity of cylinder 16. The movement of the piston of the cylinder 16 and the cages and non-rotating rod 12 connected to it provides an accelerated supply of the pin 2. At the end of the movement of the cylinder rod 16, the latch 22 engages with the stop 27. The rotation of the shaft of the electric motor 4, which through the gear wheels of the gearbox 5 and the screw pair 17, is activated. 19 provides rotation and working feed of the quill 2.

At the end of the working feed, the contact of the thrust surface of the bracket and one of the stops 21 and the rotation of the shaft of the motor 4 are stopped. Then the latch 22 is brought out of contact with the stop 27 by applying pressure to the rodless cavity of the cylinder 26 and quickly withdrawing the pin 2 to the right by applying pressure to rod cavity of the cylinder 16. At the end of the movement, the reverse rotation of the shaft of the electric motor 4 is turned on and the pinol 2 is returned to its original position, and the rotation of the shaft of the electric motor 4 is turned off, the cavities of the cylinders 16 and 26 are connected yayutsya with the drain line.

To accelerate the removal of the pinoli 2 to its original position, the pressure is supplied to the rod cavity of the cylinder 16 and the reverse rotation of the shaft of the electric motor 4 can be activated immediately after the release of the latch 22 from contact with the stop 27.

If it is necessary to process holes with multiple leads of the cutting tool, the head operation cycle is repeated, while during the accelerated removal of the pin 2 to its initial position, the drum 20 with stops is rotated so that the stop 21 is opposite the stop surface of the bracket 18. The number of stops 21 on the drum 20 corresponds to the required number of conclusions.

In the case of thread-cutting operations, the number of gear teeth 11 and 14 and the pitch of the screw pair 17, 19 are selected as follows. to ensure the movement of the pintles 2 by the value of one step of the cut thread per revolution of the spindle 3.

Receiving commands for moving the actuators of the head is carried out from the directional switches of the pressure switch and other equipment not shown in the drawing.

Claims (1)

Claim A power head containing a quill with a tool spindle kinematically connected with an accelerated feed drive including a power cylinder with a rod, and with a working feed drive including a gear, a feed switching mechanism including a stop and an element associated with it, connected with the cylinder rod, characterized in that, in order to simplify the design, the kinematic connection of the pintles with the drives of accelerated and working feeds is made in the form of a thrust placed in the gear of the gearbox, one end of which is installed with the possibility of interacting with a quill, and the other is rigidly connected to the cylinder rod, while the emphasis of the feed switching mechanism is spring-loaded, and the element interacting with it is connected with the above-mentioned thrust.