SU881956A1 - Translational-travel drive - Google Patents

Description

(54) DRIVE OF TRANSFER DISPLACEMENTS

I

The invention relates to fine mechanics and can be used as precision drives for TO4injix discrete (stepping) or continuous translational movements, such as tables of microscopes, micromanipulators of measuring devices, etc.

A device for translational movements is known, comprising a base and an electromechanical transducer with electro-magnetic grippers connected to a power and control system. The electromechanical transducer is made in the form of a magnetostrictive rod coaxially mounted with. an electromagnetic coil, and an electromagnetic grippers attached to the end of the rod P1.

The drawbacks of the device is the complexity of the design and the impossibility of continuous translational movement.

A known drive of translational movements, comprising a base, a guide, a carriage, an electromechanical transducer with grippers, consisting of articulated between

the elastic elements and the wires connected to the power source and control 2.

The known actuator further comprises a second carriage, and both carriages are kinematically connected by means of the aforementioned elastic element and wire.

However, the drive can only be used for discrete (stepping) movements and is not suitable for performing continuous translational movements, which narrows

10 of its functionality.

The purpose of the invention is the expansion of functional capabilities.

The goal is achieved by the fact that in the drive an actuator} e, 1x displacement, containing 15 base, guide, carriage, electromechanical transducer with grippers, consists of articulated elastic elements and wires connected to the source and control source, carriage

Claims (2)

20 is provided with racks, between which two pairs of said elastic elements and wires are stretched against each other, and the grippers are mounted on a guide with the possibility of 3 free skids and are connected with elastic elements and wires at their joints. FIG. 1 schematically shows a drive of translational movements; in fig. 2 - cyclogram of movements. The drive of translational movements includes the base 1, the carriage 2 with the posts 3 installed on the guide 4, between which the elastic element (spring) 5-8 and the wire 9-12, electrically insulated at the fixing points, are stretched, and the joints are elastic elements 5-8 and wires 9-12 are connected respectively with grippers 13-16. The device works as follows. In the absence of electrical voltage, the elastic force of the springs 5-8 is balanced by the tension force of the wires, respectively 9-12, and the system is at rest. When connected to the energy source, the gripper 13 is mechanically connected to the guide 4 for a time To, i, equal to the constant response time of the gripper. The wire 9 is connected to the source of electrical current, the thermal elongation to which is chosen by the elastic element 7, in this case, since the junction of the elastic element 7 and the wire 9 is connected to the fixed gripper 13, the elastic element moves the carriage 2 to the right. In the course of time T, the wire is fed to the power mode 9 - acceleration time; then for T, the carriage 2 is continuously moving due to continuous thermal lengthening of the wire 9. At the end of the first cycle of movement of the carriage 2, wire 10 is connected to the source of electric current, and during the TO time it enters the mode. The elastic element 8 selects the thermal elongation of the wire 10 and moves to the left towards the left pillar 3 of the carriage 2, the gripper 14 along the guide 4. When the thermal elongation of the wire 9 and the thermal elongation of the wire 10 during the iit time are the same, the grippers 13 and 14 are relative to each other the other become stationary, since the speed of movement of the carriage corresponding to the speed of lengthening the wire 9, is equal in magnitude and opposite in the direction of the speed of movement of the grip 14, corresponding to the speed of lengthening the wire 10. From this moment and (at the end of the DT,) the gripper 14 is connected to the power source and after the time is up - the gripping time 14 is triggered, the gripping 13 is turned off, while the carriage 2 continues to move to the right with the same fretted speed, length, stretches the spring 7 and moves the grip 13, which is free to slide along the guide 4, to the right at a speed greater than the speed of movement of the carriage 2. Various options for the supply of refrigerant to it are possible to accelerate the cooling of the wire. Further, the gripper 13 and the wire 9 are connected to power sources in the same way as described when connecting the wire 10 and the gripper 14. Observe the switching sequence of the wires 9, 10 and the grippers 13, 14, according to a predetermined sequence diagram, the carriage moves continuously to the right. During the reverse, wires 11, 12 and grippers 15 are involved in the operation. 16. By changing the mode of power supply and cooling of the wire, it is possible to adjust the speed and step size of the carriage for each cycle. Structurally, grips can be any, for example, electromagnetic, pneumatic, vacuum, etc. In this device, by successive switching of the grippers and wire, it is possible to provide both stepping and continuous linear displacements, and the presence of two pairs of opposing two pairs, articulated elastic elements with wires and tensioned between the carriage legs, makes it possible MOM and reverse (reverse) stroke control the speed of post-carriage movements. Claims of the invention I A translational drive comprising a base, a guide, a carriage, an electromechanical transducer with grippers, consisting of Third-party elements and wires connected to a power supply and control, characterized in that, in order to expand the functionality, the carriage it is equipped with racks, between which two pairs of the indicated elastic elements and wires are stretched against each other, and the grippers are mounted on the guide. with the possibility of free sliding and connected with elastic elements and wires in the places of their articulation. Sources of information taken into account in the examination 1.US Patent N 2506141, cl. 33-41, published. 1950 ... 2. USSR author's certificate for application number 2602913 / 24-25, cl. H 02 N 7/00, 1978 (prototype). Ai f1 V & 7 / TH 7 WT 13 V 15 16 Tf phi1.1 1 jj