SU1324017A1 - Command apparatus - Google Patents

Abstract

This invention relates to the field of machine building. The purpose of the invention is to provide ease of operation and increase reliability. The controller includes a housing 1, an intermediate shaft 2, two pairs of gears 3, 4, a drive shaft 5, a drum 6 with switching plates 7, the shaft 2 and the wheel 3 being in the form of a screw and a nut, respectively, and the second wheel 4 mounted on shaft 2 is provided with a key 8 mating with the keyway of the screw 2. Ensuring ease of operation and increased reliability is achieved by the fact that the keyway has a Z-shape and extends into the annular grooves of the shaft 2 to form a protrusion for reversing the shaft 2 s spring plunger An axle-spaced on a key 8 mated with annular grooves in the extreme positions of the shaft 2. 4 Il. i (L with HS 4 g J5 76 / J ery g l

Description

The invention relates to a machine control unit and can be modified in control devices.

The purpose of the invention is to provide ease of operation and increase the reliability of the device,

 Figure 1 schematically shows the proposed device; figure 2 - intermediate shaft; ka fig.Z - section A-A in figure 2; figure 4 - node I in figure 1.

The commander contains an intermediate shaft 2 installed in the housing G, connected by means of two pairs of gears 3 and 4 to a drive shaft 5 and kinematically associated with an α-drum 6 provided with switching plates 7, the intermediate shaft 2 and one of the gear wheels 3, mounted on it, made in the form of a screw and a nut, respectively, and the gear wheel 4 ;, mounted on the intermediate shaft 2, is equipped with a small screw 8, mating with the keyway 9 of the screw 2. The keyway of the screw 9 of the screw 2 has a Z-shape and v (walks in annular grooves 10, v olnennye concentration at the groin of the screw 2 to form a lip 11 for mating with the reverse screw 2 with a spring-loaded plunger 12, the dimensions keyed 8, i mating with annular grooves 10 at the extreme oo- Proposition 2 x screws.

The screw 2 is mounted in one of the gears 3 with the possibility of sliding in it and, in contact with the threaded surface with one of the gears 4, is connected through a ball bearing 13 and the stop rings 14 to the sleeve. 15, in which the pin 16 is secured, which is inserted into the longitudinal groove 17, is made in the housing 1 and is in contact with the helical groove 18, is made

on the rotary drum 6. I switch-j and the plunger 12 is spring-loaded, then the key

The connecting plates 7 are coupled with contactless end switches 1 9 mounted in housing 1. The pairs of wheels 3 and 4 are chosen in such a way as to ensure the minimum nepe-Q pad between the frequencies of rotations of the screw 2. and nut 3. For this, the sum of the numbers of teeth of one of the pairs of wheels 3 and 4 that are in gearing must 6f.iTb differ by one from the sum of the number of teeth of the second napiii of wheels 3 and 4.

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8 with the plunger 12 rotates until the electric motor is switched off, etc.) and this does not result in the breakdown of the command gear. When the direction of rotation on the electric motor is changed, the plunger 12 locates the protrusion 1 1 and causes the screw 2 to rotate, causing its axial movement and movement of the drum 6, i.e. The implementation is either a cycle of the working movement or a cycle of the electric motor r.verse. The device is easy to maintain and safe to operate, because when you move the key of the keyway with the keyway in the floor

The device works at once.

next about 10

15

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The base shaft 5 is rotated from the motor shaft (shown).

Since the number of teeth of the wheels 3 and 4 are different, the frequency of rotation on them is also different. The screw 2, having received rotation from the gear wheel 4 through the key 8, moves along the threads of the nut 3. While ensuring the minimum difference between the rotational frequencies of the screw 2 and the gear nut 3, the relative speed of rotation of the wheels 3 and 4 is low, as a result of which the screw 2 is also small . Moving, the screw 2 carries away the sleeve 15 with the finger 16 installed in it, which, moving in the longitudinal slot 17 of the box 1 and in the spiral slot 18 of the drum 6, turns the latter along with the switching plates 7, bringing one of them to the contactless face switch 19, which gives the command to reverse the motor. The sleeve 15 moves in the opposite direction, returning the drum 6 with the switching plates 7 to its original position. In it. the time of the other switching plate 7 is supplied to another non-contact end switch 19, from which the command to stop the motor comes

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The adjustment to the depth of the thread to be machined is made by changing the relative angular position of the switching plates 7.

If one of the switches 19 did not work and the screw 7 continues to shift, then the key 8 falls into one of the ring grooves 10 on the screw 2. As the key 8 freely passes over the bottom of the ring groove 10,

8 with the plunger 12 rotates until the electric motor is switched off, etc.) and this does not result in the breakdown of the command gear. When the direction of rotation on the electric motor is changed, the plunger 12 locates the protrusion 1 1 and causes the screw 2 to rotate, causing its axial movement and movement of the drum 6, i.e. either the cycle of the working movement or the cycle of the electric motor r. The device is easy to maintain and reliably in operation, because when the short key clears the keyway with a smashing 3132A01

mechanism does not occur, which eliminates the need for disassembly. To return the key to the working position, it is sufficient to reverse the motor .g

Claims (1)

Invention Formula A commander containing an intermediate 10 shaft connected in a housing, connected by means of two pairs of gear wheels to a drive shaft and kinematically connected to a drum provided with switching plates, the intermediate shaft and one of the 5 gear wheels mounted on it. 74 made in the form of a screw and, respectively, and the second gear wheel mounted on the intermediate shaft is provided with a key mated to the key groove of wines G, characterized in that, in order to ensure ease of operation and increase reliability, the key groove of the screw has a Z-shaped the shape and is connected to the annular grooves made at the ends of the screw with the formation of a protrusion for coupling with the reverse of the screw with a spring-loaded plunger placed on the key, mating with the annular grooves in the extreme positions of the screw. - / a7Z // J cpuz Editor A. Ogar Compiled by V. Mukhanov Tehred i.Popovich Proofreader and. Muska Order 2965/52 Circulation 863 Subscription VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35 Raushsk nab. 4/5 Production and printing company, Uzhgorod, Projecto st., 4