DE8311142U1 - Slide bearings, in particular for machine tools - Google Patents

Description

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Sled position, iris specific for Machine tools

The invention relates to a slide mounting, in particular for machine tools, in which slide-side guiding; support surfaces against guide surfaces of a table and ■ form a form-fitting slide guide.

The invention is based on the object of a slide mounting of the type under consideration in such a way that the bearing preload can be continuously adjusted in a simple manner. wherein a control of the level of the preload as a function of the operating data or those occurring during the machining Cutting forces possible.

According to the invention, this object is achieved in that at least one of the guide surfaces has a pressure medium chamber that can be acted upon by a pressure fluid that can be changed is assigned, which allows elastic deformation of the guide surface.

The slide guide according to the invention has proven to be extremely advantageous. By applying a pressure fluid, preferably pressure oil, to the pressure medium chamber. the elasticity of the guide surface can be used to more or less strongly press the guide surfaces of the slide and table against each other and to adapt the bearing preload to the respective conditions. ^f

The invention is explained in more detail below with reference to the accompanying drawing. Show it:

1 shows, in a highly schematic manner, a slide mounting for a machine tool slide;

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FIG. 2 shows a partial section through a row of rolling elements of the base bearing according to FIG. 1, in the direction of the Arrow 1 seen.

In Fig. 1, one end of a carriage 1 and the 1 part of a table 2 assigned to this end is shown. The carriage 1 is provided with guide surfaces 3, 4, 5 and 6, the f

I Provide table 2 with guide surfaces 7, 8, 9 and Io. Between | Rolling bodies 11 designed as rollers are arranged on the guide surfaces. In the area of the guide surfaces 9 and Io, the table 2 is equipped with pressure medium chambers 12 and 13 which extend in the longitudinal direction of these guide surfaces and to which a pressure medium can be fed via a line 14. A control system with a sensor 15 which measures the speed of the carriage 1 and whose signals a stepper motor 16 β ^{Λ <ri} rn is used for supplying pressure medium. A screw spindle 17, which is mounted in a threaded bushing 18, is moved back and forth by the stepping motor 16. The screw spindle 17 acts on the piston rod 19 of a piston B, which in turn pressurizes a pressure fluid located in a pressure chamber 21. ]

It would also be possible to carry out the control as a function of the cutting forces occurring during the machining.

Claims (6)

Ii-INQ.DIETERIIII II II ■ · ■ ■ ■ * t • DR ■ ft · MANFRED BÖNINQιI DIPL.1 II II JANDERIl 11th-INg.1PATENTANWÄLTE turopcan patent Auurnc> sKURFURSTENDAMM 661 BERLIN ISTelefon 030 B 83 50 71 72 Telegrams Consideration /19.274 DE September 21, 1983 Official reference number: G 83 11 142.5 Name of d. Note: Universal-Kugellager-Fabrik GmbH. New claims: 1. Slide mounting, especially for machine tools, in which slide-side guide surfaces are supported against guide surfaces of a table and a form-fitting Form slide guide, characterized in that that in the vicinity of at least one of the guide surfaces (3-10) a variable pressure with a pressure fluid pressurized pressure medium chamber (12, 13) for the elastic Deformation of the guide surface (9,10) is arranged. 2. slide mounting according to claim 1, characterized in that between the guide surfaces (3-10) / '"j rolling elements (11) are arranged. 3. slide mounting according to claim 1 or 2, characterized in that it has at least two an angle between them enclosing guide surfaces (9,10) and arranged in the vicinity of pressure medium chambers (12,13) are. 4. slide mounting according to one of claims 1 to 3, characterized in that the pressure medium chambers (12,13) extend over the entire length of the guide surfaces (9,10). PoslschockkoMo Berlin Wiüt _t If cn ι ο .1743 / 34 100 ι Berliner Bank AG account 01 1092t 900 Il Il It DlPL-INQ DIETER JANDER DR INQ. MANFRED tföNINQ PAI ENIANWAL ΓΕ 5. slide mounting according to one of claims 1 to 4, characterized in that it is provided with a Control (15-21) is provided for changing the pressure of the hydraulic fluid. 6. slide mounting according to claim 5, characterized in that the controller (15-21) for controlling of the hydraulic fluid depending on the ones to be executed Operations of a machine tool equipped with the slide (1) is used. MB: BL