SU787142A1

SU787142A1 - Precision portal machine

Info

Publication number: SU787142A1
Application number: SU782659678A
Authority: SU
Inventors: Евгений Георгиевич Нижник; Виктор Александрович Чирков; Валентин Георгиевич Абрамов; Михаил Константинович Варламов
Original assignee: Особое Конструкторское Бюро Станкостроения
Priority date: 1978-08-21
Filing date: 1978-08-21
Publication date: 1980-12-15

Description

(54) ПРЕЦИЗИСЖНЫЙ ПОРТАЛЬНЫЙ СТАН (Ж(54) PRECISE PORTAL MILL (W

II

Изобретение относитс к станкостроению , в частности к портальным высокоточным координатно-расточным станкам.The invention relates to a machine tool industry, in particular to portal high-precision jig boring machines.

Известен станок портального типа с автоматической системой управлени деформацией стоек, содержащий отдельно дл каждой стойки механизм компенсации деформаций стойки и датчики деформаций стоек lj.A gantry type machine with an automatic rack deformation control system is known, comprising, separately for each rack, a rack deformation compensation mechanism and a rack strain sensors lj.

Недостатком этого станка вл етс то, что механизм компенсации дефс маций стойки, вьтолненный в виде гидравлической опоры, св занной с верхним концом стойки, ликвидирует перенос траверсы только перемещений шпиндел в одной плоскости по сигналу рассогласовани , возникающему при отклонении от параллельного положени траверсы по отношению к плоскости стола. Кроме того , не устран ютс дефс маци стоек, происход щие вследствии наличи неуравновешенных масс траверсы.The disadvantage of this machine is that the stand compensation mechanism, implemented as a hydraulic support associated with the upper end of the stand, eliminates the transfer of the traverse of only spindle movements in the same plane by the error signal that occurs when the traverse deviates from the parallel position with respect to plane table. In addition, decks are not eliminated due to the presence of unbalanced traverse masses.

Цель изобретени - повышение точноо ти обработки.The purpose of the invention is to improve processing accuracy.

Эта цель достигаетс тем, что механизм компенсации деформации стойки выполнен в виде двуплечего рьгаага, одно плечо которого шарнирно закреплено в передней части стойки, а другое посредством т ги соединено со штоком гидро- цилиндра, установленного на станине станка и св занного с датчиком деформаций стоек.This goal is achieved by the fact that the stand deformation compensation mechanism is made in the form of a two-sided bar, one shoulder of which is hinged at the front of the rack, and the other connected by means of a rod to a hydraulic cylinder mounted on the frame of the machine and connected to the rack deformation.

На фиг. 1 изображен станок, общий вид; на фиг, 2 - разрез А-А на фиг. 1:FIG. 1 shows a machine, a general view; FIG. 2 is a section A-A in FIG. one:

Станок содержит направл ющие 1 станины 2, на которых подвижно установлен стол 3,The machine contains guides 1 beds 2, on which the table 3 is movably mounted,

На станине 2 установлены стойки 4 н 5 портала, на вертикальных направл ющих 6 которых подвижно смонтирована траверса 7 с расположенной на ней шпиндельной бабкой 8.On the bed 2, racks 4 and 5 of the portal are mounted, on the vertical guides 6 of which the yoke 7 is movably mounted with the headstock 8 located on it.

Станск установлен в фундаменте 9 посредством башмаков 1О.Stank is installed in foundation 9 by means of shoes 1O.

Claims

The bed deformation compensation system 11 and the non deformed system 12 are connected with the shoes 10. The deformation compensation mechanism is made in the form of a two-arm lever 13, which is mounted on an axis 14 located on a rack. One arm of the lever 13 is pivotally fixed at the top of the front of the rack. The other arm of the lever 13 is connected by means of the rod 15 with the rod 16 hydrocycline 17 installed on the frame

2. The stand 18 deformation sensors 18 are mounted on the yoke 7. The measuring element of the sensor 18 is connected to the mirror 19 mounted on the base system 12 by means of a light beam. The sensors 18 are connected to the hydraulic cylinder 17 through a signal converter 2O. The machine works as follows. When (moving the yoke 7 along the uprights 4.5 and the spindle head 8 along the yoke, the tool axis deviates from the vertical position as a result of deformations of the uprights. When you move the yoke 7 upwards or the CEYurh down along the guide racks 4 and 5, the bending arm of the bending force changes Racks are deformed and an angular displacement of the tool occurs relative to the plane of the table. The same phenomenon occurs when the foot is strapped with pepia and moves along the frame, while the 18 cm optical sensors The yards are on traverse 7 and move with it, and the measuring element is connected by a light beam to a mirror 19 mounted on an undeformable base system 12, the units output information about the angular mixing of the traverse (deflection of the struts). The signal on the amount of deformation of the struts converts into a converter 20 and comes in the form of a command into the hydrocylindrical 17, is set in motion, the force through the thu 15 is transmitted to the lever 13 and from there to the upper one with racks 4 and 5. The combined effort is summed up with the force causing the deflection, as a result of which the elastic def rmatsi deflection and tilting racks are reduced. Claims of Precision Gantry Machine with Automatic Rack Management System, containing for each rack separately a mechanism for compensating for its deformations and rack deformation sensors, characterized in that, in order to improve the processing accuracy, the mechanism for compensation of the rack deformation is made in the form of a double-arm lever, one the shoulder of which is hinged at the front of the rack, and the other is connected to the stem of the eo-cylinder mounted on the stand of the machine and connected with the strain gauges by means of a pull stances Sources of information taken into account (fv examination 1. USSR author's certificate No. 557883, class B 23 7 / O4, 1977.