SU1036965A1 - Hydraulic cylinder - Google Patents

Abstract

HYDROCILINDER, comprising a housing with lids, main and floating lorshni with rods, placed in the housing with the formation of a piston, interpiston and rod cavities, a threaded control rod with an emphasis, fixed in the lid and installed in the housing with possible interaction with the stem of the floating piston rod. supplying n discharge of working fluid to the piston, interpiston and rod cavities, the floating piston with the rod being made with a through central bore for stirring the threaded control rod from characterized in that, in order to improve the positioning accuracy of the pistons on the intermediate stop, the main piston rod is hollow and provided with longitudinal grooves, the floating piston rod is placed in the cavity of the main rod, with the possibility of axial movement, the stop is made in the form of a nut, axially spaced movement in the grooves of the main stem, and the channel for supplying the working fluid to the interpiston cavity is made in the form of a central through hole in the threaded rod. (L

Description

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05 CO 05

ate

The invention relates to machine tools and can be used in calipers of metal-cutting machines, as well as other areas of the national economy.

A hydraulic cylinder is known, comprising a housing with lids, a main and a floating pistons with rods arranged in the housing to form a piston, an intermediate piston and a rod /} cavities / threaded control rod with an emphasis fixed in the cover and installed in the housing with the possibility of interaction with the rod a floating piston, and channels for supplying and discharging the working fluid into the piston, interpacial and rod cavities, the floating piston, with the rod, made with a through central aperture for placement. threaded control rod nj.

The disadvantages of the famous. The constructions are large in size, the positioning of the piston on the intermediate stop is low, due to the difference in the areas of the piston and rod cavities (non-rigid stop).

The aim of the invention is to improve the accuracy of the positioning of the piston on the intermediate stop.

This goal is achieved by the fact that the main piston rod is made hollow ft provided with longitudinal grooves, the floating piston rod is placed in the sub-wall of the main rod with axial displacement, the stop is in the form of a nut in contact with the main flow slots, and the working fluid supply channel and the inter piston cavity are made in the form of a central through hole in a threaded rod.

FIG. Gnz1razhzhen gidrotsnlinder, section; in fig. 2 - the same, in the extreme left position; in fig. 3 - the same, in an intermediate position; in fig. 4 and 5 is the same, in the extreme right position.

The hydraulics contain a housing i with roofs 2 and 3, a main piston 4 with a rod 5, a floating piston 6 with a rod 7. Pistons no 4 and b are installed in case I with the formation of piston, inter piston and rod cavities 8, 9 and 10 respectively. In the cover 2 a threaded regulating rod II is fixed with a nut-stop 12, the protrusions of which are in contact with the longitudinal grooves 13 of the rod 7. The rod II is made with a through central hole

14 for supplying the working fluid to the cavity 9. The working fluid in the cavity 8 and 10 is supplied through the holes

15 and 16, made in the covers 2 and 3. The floating piston 6 is fixed from

5 rotation relative to the piston 4 by means of the key 17.

Hydrocyliidre works as follows.

When applying the working fluid under pressure. - through the hole 15 and the connection of the holes 14 and 16 with the drain, the pistons 4 and 6. move up to the stop of the rod 7 into the nut 12 and stop in the intermediate position. When the working fluid is supplied through the hole 14 and the cavity 10 communicates with the drain, the piston 4 moves up to the stop in the cover 3. The hole 15 can be connected either to the steam valve or the coj drain line. The rod 5 occupies a fully extended position.

When the working fluid flows through the opening 16 of the communication of the cavities 8 and 9 with the drain, the piston 4 will move until it is in contact with the piston. 6, and then jointly move up to the stop in the bolt 2. The rod 5 takes the extreme retraction position.

To change the value of the interim. On the 5th stroke, the adjusting rod 11 should be rotated, while the nut 12 moves in the longitudinal grooves 13 of the rod 5.

The use of hydrocyliidra allows for the processing of stu0 printing surfaces with a high degree of accuracy, without any copy, increasing its reliability.

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Claims (1)

A HYDROCYLINDER, comprising a housing with covers, a main and floating pistons with rods placed in the housing with the formation of a piston, piston and rod cavities, a threaded control rod with a stop fixed in the cover and installed in the housing with the possibility of interaction with the rod of the floating piston, and channels for supplying and discharging the working fluid into the piston, piston and rod cavities, and the floating piston with the rod is made with a through central hole to accommodate the threaded control rod, excellent being that, with. · in order to improve the accuracy of positioning the piston on the intermediate stop, the main piston rod is hollow and provided with longitudinal grooves, the floating piston rod is placed in the cavity of the main rod, with the possibility of axial movement, the emphasis is made in the form of a nut, · placed with the possibility of axial movement in the grooves of the main rod, and the channel for supplying the working fluid to the piston cavity is made in the form of a central through hole in the threaded rod. © about 05 СО 05 sp, 1036965