SU823710A1 - Apparatus for converting rotation to translatory movement - Google Patents

Description

..: 1,:. The invention relates to instrumentation, namely to mechanical systems for scanning diffraction gratings used in tunable organic compound lasers and other special devices. .. A device is known for converting rotary motion into a translational, comprising an engine, a housing installed in it, a traveling int, a nut interacting with it and a lever connected to the nut by means of an elastic element 1. The disadvantages of the known devices are its limited functional capabilities and insufficiently linear displacement of the nut. The closest to the proposed technical essence and achievable. The result is a device for converting rotary motion into translational, comprising a housing, a lead screw installed therein, a nut cooperating with a screw, a guide rod, a carriage,; the rod is a pusher 2. A disadvantage of the known device is the low accuracy of the movements. The purpose of the invention is to improve the accuracy of movements. This goal is achieved by the fact that the device is equipped with a disk and gear mounted on the screw, located in the housing coaxially between-. receivers and light sources, additional disk and gears interacting with the main one, and elastic elements rigidly connected with one end of the carriage, others with a nut, and the disks are installed between the receivers and light sources and made with radial holes. In addition, the nut is made split in the longitudinal direction. FIG. 1 shows the device, a general view; in fig. 2 shows section A-A in FIG. one; in fig. 3 shows a section BB in FIG. 2. A device for converting rotational motion into a translational movement comprises a housing 1, a lead screw 2 installed therein, a nut 3 cooperating with screw 2, a directional axis 4 of optical quartz, a carriage 5 connected with it and an interacting Q; o rod .4 pusher 6. On screw 2. a disk 7 and a gear 8 are installed. In case 1, receivers 9 and 10 and light sources 11 and 12 installed in a bracket, an additional disk 13 and gear 14 interacting with the main gear 8 are mounted coaxially. Elastic elements 15 and 16 hard anes one end to the carriage 5, and the other - with nut 3. The discs 7 and 13 are mounted between the light sources and receivers and v1polnvny with radial apertures. The nut 3 is made cutting in the longitudinal direction. The casing 1 is equipped with a stepper reversing electric motor 17, the shaft of which is connected to the lead screw 2 by means of a clutch 18, in which the bellows 19 is used providing the transmission of torque without taking into account the elastic dead stroke. On the lead screw 2, a gear wheel 20 is fixed, which is connected with the manual drive mechanism and mechanical reading device (not shown).

The carriage 5 is moved in the housing 1 in ball guides 21. The follower b is attached to the carriage 5 by means of tension springs 22 and 23. The carriage 5 and the follower 6 are connected by tension springs 24. The pushbolder, moving in the ball guides 25, interacts with the guide rod 4 by means of the stops 2.6, which are made of a material e with a low coefficient of friction and wear.

The main gear 8, the disk 7 and the additional gears 14 and the disk 13 form a toothed speed limiter for the lead screw 2, as well as a mechanism for installing and controlling the zero division of the reference scale of the device-. properties.

Receivers 9 and 10- and Sources .11 and 12 of the light with disks 7 and 13 are sensors that signal that the scale of the device is on a given division.

A device for converting rotational motion into translational works as follows.

When a control pulse is applied to the electric motor 17, the rotation of its shaft through the coupling 18 is transmitted to the driving screw 2. Rotational movement of the screw 2 is converted into translational movement of the carriage 5 with the pusher 6 by means of the nut 3. The actuator actuates (on the drawing is not shown) of the functional mechanism.

c. The necessary magnitude of the linear movement of the carriage is selected as follows.

One of the gears of gears has n teeth, and the other - (n + 1).

Q The pulses on the receivers 9 and 10 are fixed at a frequency equal to the rotation frequency of the gears 8 and 14. However, the pulsed flows are shifted relative to each other in time. Simultaneous register of qi pulses

5 by two receivers occurs once per p revolution, which corresponds to a given linear displacement of the carriage 5 or n revolutions of the lead screw 2.

0 -The use of the method of joint registration of impulse flows allows to increase the accuracy of movements of the executive body functional-. mechanism. .

Claims (2)

1. A device for converting rotary motion into a translational, comprising a casing, a lead screw mounted therein, an interacting and with a nut, a nut, a guide rod, a carriage associated with it and a pusher interacting with the rod, which is designed in order to improve the accuracy of movement, it is equipped with a screw and gear mounted on the screw and located in the housing coaxially with each other. receivers and light sources, additional disk and gears, interacting with the main, and elastic elements, rigidly connected by one ends with. carriage; others - with a nut; and disks mounted between receivers and light sources and. made with radial holes. 5 2. The device according to claim 1, p. 1 and that the nut is made split in the longitudinal direction. . Information sources, taken during examination 1. USSR Author's Certificate No. 386189, CL-. F 16 H 25/20, 1973. 2. The author's certificate USSR № 234704, cl. G 01 J 3/22, 1969 (prototype). .