SU1720816A1 - Indexer for gear manufacturing machine - Google Patents

Abstract

The invention relates to mechanical engineering, in particular to the production of gear-processing machines for cutting gear racks. The goal is to expand technological capabilities. For this, the separating device to the gear-turning machine includes a drive 1 and a kinematic chain intended for the connection of the device with the machine table. The chain includes a worm gear, a worm gear mounted on the driven shaft, a lever fixed on this shaft, an interlock with it and a lock control mechanism. The latter consists of a drive 7. placed on the shaft of the cam 8, and the limit switches 9 and 10, placed in the plane of rotation of the lever. One of the switches has an output to the latch actuator 7 via the pulse counter 11, and the other to the actuator 1. By means of the pulse counter 11, the number of shaft revolutions is set, corresponding to the module of the teeth of the rail to be processed. 3 Il.

Description

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The invention relates to mechanical engineering, in particular to devices for moving a part during machining, for example, on a gear processing machine.

The purpose of the invention is the expansion of technological capabilities through the creation of conditions for cutting slats.

FIG. 1 fragment dividing device with a view of the cam and end switches; in fig. 2 - separating device of a gear-processing machine, general view; in fig. 3 shows section A-A in FIG. 2

The separating device to the gear-cutting machine is made in the form of a drive 1 and a kinematic chain intended for its connection with the machine table and consisting of a worm 2, a worm gear 3 mounted on the driven shaft 4, and fixed on the same shaft with the ability to rotate the lever 5 and interacting with him underwater latch b drive 7 latch.

The separating device contains a latch control mechanism consisting of a drive 7 placed on the shaft 4, a cam 8 sequentially cooperating with limit switches 9 and 10 installed in the plane of its rotation, one of which (switch 9) has an exit to the drive 7 of the lock through a pulse counter 11, and another switch 10 to a drive 1. A gear 13 and a screw 14 serve to move the table 12. A gear 13 and a screw 14 move the table 12 by an amount equal to the normal pitch of the toothed rack of the smallest module multiple the whole range of modules processed on the machine with one revolution of the shaft 4.

The dividing device works as follows.

In the initial position, the table 12 is in the working position. The cam 8 interacts with the limit switch 10 (FIG. 3), and the underwater retainer b communicates with the lever 5 (FIG. 2).

By means of the pulse counter 11, the number of revolutions of the shaft 4 is set, which corresponds to the module of the teeth of the rod being machined.

When starting the machine, a profile milling cutter (not shown) is turned on and the tooth pits are processed, after which the milling cutter returns to its original position. Under the action of the actuator 7, the latch b is retracted to the left outside the zone of movement of the lever 5. At the same time, the actuator

1, the rotation of which is transmitted through the worm to 2 and the worm gear 3 to the driven shaft 4 and through. The gearbox 13 to the screw 14. The table 12 is set in motion. At each turn

shaft 4, the cam 8 communicates with the limit switch 9 and outputs a pulse to the counter 11 pulses. Upon reaching a specified number of pulses, the pulse counter 11 gives a command to move

the latch 6 into the zone of movement of the lever 5. At the same time, the revolutions of the drive 1 decrease. The lever 5 slowly turns to the latch 6. In this position, the cam 8 contacts the end

switch 10, which turns off the drive 1 and gives a command for further work of the machine on the cycle.

In order to machine a rail of any module, it is necessary to divide this module into the smallest multiple module received in the machine, and enter the private branch into the pulse counter.

With this setting, the counter 11 pulses gives a command to feed the latch 6

after the sixth actuation of the limit switch 9, and the shaft 4 will stop after six turns when the latch 6 and the lever 5 interact, which ensures the positioning accuracy of the table 12,

Thus, in the proposed dividing device to the gear-processing machine, the processing of gear racks is provided in a wide range of modules.

Claims (1)

Invention Formula A separating device to a gear processing machine in the form of a drive and a kinematic chain, intended for its communication with the machine table and including a lever connected to the drive and installed with the possibility of rotation, an associated lock and a lock control mechanism, characterized in that expansion of technological capabilities due to the creation of conditions for cutting rails, the latch control mechanism is made in the form of a drive connected to the latch rigidly connected to the cam lever and placed in the plane of rotation of the cam to be alternatively reacting with the cam of the two limit switches, one of which is coupled to the drive control mechanism, and the other - with a clamp pulse counter inputted through the device. U ////// LUYASH (// U // to U /// L Fig