Guide device, precision support for a linear rail and adjusting method

Patent metadata

Field	Value
Publication number	US-11819967-B2
Application number	US-201917440769-A
Country	US
Kind code	B2
Filing date	Dec 13, 2019
Priority date	Apr 4, 2019
Publication date	Nov 21, 2023
Grant date	Nov 21, 2023

Abstract

A guide device for a machine tool including a base body having at least one contact surface, a guide rail having at least one bearing surface and a guide axis, and a plurality of exchangeable support plates for positioning the guide rail on the base body.

First claim

The invention claimed is:

1. A guide device for a machine tool, comprising
a base body ( 3 ) having at least one contact surface,
a guide rail (LF) having at least one bearing surface and a guide axis, and
a plurality of exchangeable support bodies ( 1 ; 2 ) for positioning said guide rail (LF) on said base body ( 3 );
wherein the support bodies ( 1 ; 2 ) are arranged along the guide axis for setting defined distances between the bearing surface of said guide rail (LF) and the contact surface of said base body ( 3 ), and
wherein the plurality of support bodies ( 1 ; 2 ) comprise horizontal support bodies ( 2 ) and vertical support bodies ( 1 ) and the horizontal support bodies ( 2 ) are provided spaced apart from and in parallel to one another along a horizontal contact surface of said base body ( 3 ) and the vertical support bodies ( 1 ) are provided in parallel to one another along a vertical contact surface on said base body ( 3 ).

2. The guide device according to claim 1 , wherein the support bodies ( 1 ; 2 ) are arranged according to their respective plate thickness along the guide axis such that an accuracy deviation in shape and/or position of said guide rail (LF) and/or said base body ( 3 ) is compensated for and said guide rail (LF) resting on said support bodies ( 1 ; 2 ) is in a predeterminable ideal guide position.

3. The guide device according to claim 1 , wherein a plurality of support sections exist along said guide rail (LF) and a support body ( 1 ; 2 ) is provided in each support section and the distance between said guide rail (LF) and said base body ( 3 ) in the respective support section is determined by the thickness of the support plate ( 1 ; 2 ) provided in the support section.

4. The guide device according to claim 3 , wherein said base body ( 3 ) has cutouts ( 3 A) on the support sections, respectively, so that the support bodies ( 1 ; 2 ) are exchangeable along the cutouts ( 3 A).

5. The guide device according to claim 1 , wherein said guide rail (LF) is contacted with lateral pressure pieces (P) on a first vertical side and is contacted with the vertical support bodies ( 1 ) on the opposite second vertical side, and wherein the pressure pieces are wedge-shaped and have at least one bore.

6. The guide device according to claim 1 , wherein the support bodies ( 1 ; 2 ) are each ground one-piece spacer plates and said guide rail (LF) is a linear guide rail.

7. A precision support ( 100 ) for receiving a guide device of a base body ( 3 ) of a machine tool, comprising
a plurality of exchangeable support bodies ( 1 ; 2 ) which form support sections for contacting the guide device and are positioned on said base body ( 3 ) along a guide axis of the guide device;
wherein the support bodies ( 1 ; 2 ) each have a first support surface for contacting the guide device and a second support surface for contacting said base body ( 3 ) and the support bodies ( 1 ; 2 ) are provided for tolerance compensation between a bearing surface of said guide rail (LF) and a contact surface of said base body ( 3 ), and
wherein the plurality of support bodies ( 1 ; 2 ) comprise horizontal support bodies ( 2 ) and vertical support bodies ( 1 ) and the horizontal support bodies ( 2 ) are provided spaced apart from and in parallel to one another along a horizontal contact surface of said base body ( 3 ) and the vertical support bodies ( 1 ) are provided in parallel to one another along a vertical contact surface on said base body ( 3 ).

8. The precision support according to claim 7 , wherein the support bodies ( 1 ; 2 ), for compensating for an accuracy deviation of the guide device and/or said base body ( 3 ), are positioned according to their plate thicknesses along the guide axis so that the guide device supported on the support bodies ( 1 ; 2 ) is brought into an ideal guide position.

9. The precision support according to claim 7 , wherein the first support surface and the second support surface of a support body ( 1 ; 2 ) are formed plane-parallel to each other, and the and a maximum deviation of the distance between the first support surface and the second support surface is less than or equal to 1 μm, and the surface of the first and/or second bearing surface is ground.

10. The precision support according to claim 7 , wherein the horizontal support bodies ( 2 ) are spacers which each have an opening for receiving a fastening screw ( 5 ) of the guide device.

11. A method for adjusting the position of a guide rail of a guide device for a machine tool, the guide device including a base body ( 3 ) having at least one contact surface, a guide rail (LF) having at least one bearing surface and a guide axis, and a plurality of exchangeable support bodies ( 1 ; 2 ) for positioning said guide rail (LF) on said base body ( 3 ), the support bodies ( 1 ; 2 ) being arranged along the guide axis for setting defined distances between the bearing surface of said guide rail (LF) and the contact surface of said base body ( 3 ), the method comprising:
adjusting the position of said guide rail (LF) to a predefined position by adapting the shape of at least one support body ( 1 ; 2 ) to an adapted shape and/or by replacing at least one support body ( 1 ; 2 ).

12. The method according to claim 11 , wherein, for adjusting the position of said guide rail (LF), the distance between said base body ( 3 ) and said guide rail (LF) is set by adapting the shape of at least one support body ( 1 ; 2 ) to an adapted shape.

13. The method according to claim 11 , wherein the at least one support body ( 1 ; 2 ) is brought into an adapted shape by a machining manufacturing process, to compensate for the shape and the positional tolerance of said base body ( 3 ) and/or said guide rail (LF).

14. The method according to claim 11 , wherein, for adjusting a course of the guide axis to an ideal course, the distance between said guide rail (LF) and said base body ( 3 ) is adjusted in sections by replacing at least one support body ( 1 ; 2 ) with an adapted support body ( 1 ; 2 ), the adapted support body ( 1 ; 2 ) being adapted to compensate for deviations in shape of the part of said guide rail (LF) and said base body ( 3 ) present in the respective support section.

15. The method according to claim 11 , wherein, for adjusting the position of said guide rail (LF) in a vertical direction, the distance between said base body ( 3 ) and said guide rail (LF) is set by adapting the shape of at least one horizontal support body ( 1 ; 2 ) to an adapted shape and wherein, for adapting the position of said guide rail (LF) in a horizontal direction, the distance between said base body ( 3 ) and said guide rail (LF) is set by adapting the shape of at least one vertical support body ( 1 ; 2 ) to an adapted shape.

16. The method according to claim 15 , comprising the steps of:
fixing said guide rail (LF) in a horizontal direction by clamping said guide rail (LF) between lateral pressure pieces (P) and the vertical support bodies ( 1 ); and
fixing said guide rail (LF) in a vertical direction by means of a screw connection on said base body ( 3 ), wherein the horizontal support bodies ( 2 ) are spacer plates of the screw connection.

17. A method for connecting a guide rail (LF) to a base body ( 3 ) of a guide device according to claim 1 , comprising:
placing support bodies ( 1 ; 2 ) in sections along the guide axis, wherein a plate thickness of the support body ( 1 ; 2 ) is selected for each section in such a way that tolerance compensation takes place when said guide rail (LF) is screwed and/or clamped to said

Assignees

• Deckel Maho Pfronten Gmbh

Inventors

• Jung Robert

Classifications

• B23Q1/017 Primary

  Arrangements of ways · CPC title

• F16C29/001

  adjustable for alignment or positioning · CPC title

• F16C29/004

  Fixing of a carriage or rail, e.g. rigid mounting to a support structure or a movable part · CPC title

• F16C29/005 Primary

  Guide rails or tracks for a linear bearing, i.e. adapted for movement of a carriage or bearing body there along · CPC title

• F16C29/12

  Arrangements for adjusting play · CPC title