Unit for deburring and rounding edges in a surface grinding machine

1 . An edge machining assembly for a wide grinding machine, comprising:

a plurality of cylindrical roller brushes, each cylindrical roller brush of the plurality of cylindrical brushes having a respective cylindrical surface and a multiplicity of brush elements on the respective cylindrical surface, wherein each cylindrical roller brush has a respective first axis of rotation which corresponds to a center longitudinal axis of the cylindrical roller brush,

a first drive unit configured for driving each cylindrical roller brush in a rotational movement about the respective its first axis of rotation of each respective cylindrical roller brush,

a plurality of holders, wherein each cylindrical roller brush is mounted in a respective holder of said plurality of holders, wherein each respective holder has a respective second axis of rotation, wherein each respective second axis of rotation is not aligned parallel to the respective first axis of rotation, wherein each cylindrical roller brush having a respective first axis of rotation is mounted so as to be rotatable about the respective second axis of rotation of the respective holder in which the respective cylindrical roller brush is mounted,

a second drive unit configured for rotating each cylindrical roller brush having a respective first axis of rotation about the respective second axis of rotation of the respective holder in which the respective cylindrical roller brush is mounted,

a plurality of suspension frames defining a third movement axis, wherein each respective holder having a respective second axis of rotation is mounted to one respective suspension frame of the plurality of suspension frames, wherein each respective suspension frame is guided for a movement guided by the third movement axis,

a third drive unit configured for moving the plurality of holders having respective second axes of rotation in a movement guided by the third movement axis,

wherein the third movement axis is in the form of a closed guideway, and each holder of the plurality of holders having a respective second axis of rotation is moved along the closed guideway by the third drive unit.

2 . The edge machining assembly as claimed in claim 1 , wherein one or more of the following are true:

the second axis of rotation of each respective holder is perpendicular to the first axis of rotation of the respective cylindrical roller brush mounted in the respective holder,

the closed guideway is in a plane which is perpendicular to each second axis of rotation of each respective holder of the plurality of holders, and

the closed guideway is in a plane which is parallel to each first axis of rotation of each respective cylindrical roller brush.

3 . The edge machining assembly as claimed in claim 1 , wherein the second axis of rotation of at least one holder of the plurality of holders extends through the respective cylindrical roller brush mounted in the at least one holder.

4 . The edge machining assembly as claimed in claim 3 , wherein each second axis of rotation of each respective holder of the plurality of holders extends through the respective cylindrical roller brush mounted in the respective holder.

5 . The edge machining assembly as claimed in claim 1 , further comprising

a workpiece support surface; and

a workpiece conveying device for conveying the workpiece support surface in a workpiece conveying direction.

6 . The edge machining assembly as claimed in claim 5 , wherein the workpiece support surface has a support width perpendicular to the workpiece conveying direction and the closed guideway extends in the direction of the support width over an extent which is greater than or equal to the support width.

7 . The edge machining assembly as claimed in claim 5 , wherein one or more of the following are true:

the workpiece support surface is parallel to each first axis of rotation, and

the workpiece support surface is parallel to a plane in which the closed guideway extends.

8 . The edge machining assembly as claimed in claim 1 , wherein

the second drive unit comprises a hollow shaft and the first drive unit comprises a drive shaft extending through the hollow shaft.

9 . The edge machining assembly as claimed in claim 1 , further comprising a drive motor, wherein one of the following is true:

the first drive unit and the second drive unit are coupled to the drive motor,

the second drive unit and the third drive unit are coupled to the drive motor, and

the first drive unit and the third drive unit are coupled to the drive motor.

10 . The edge machining assembly as claimed in claim 1 , further comprising a control unit, wherein

the first drive unit comprises a first drive motor, the second drive unit comprises a second drive motor, and the third drive unit comprises a third drive motor,

the control unit is connected for signal transmission to the first, second, and third drive motors, and

the control unit is configured to actuate the first, second, and third drive units independently of one another.

11 . The edge machining assembly as claimed in claim 1 ,

wherein at least one of the cylindrical roller brushes comprises a first and a second roller segment which are arranged axially next to one another in relation to the respective first axis of rotation, and the first and second roller segments of the at least one of the cylindrical roller brushes are mounted so as to be rotatable about the respective first axis of rotation, and

wherein the first and the second roller segments are driven by the first drive unit in a matching direction of rotation, or the first and the second roller segments are driven by the first drive unit in different directions of rotation.

12 . The edge machining assembly as claimed in claim 11 , wherein each of the cylindrical roller brushes comprises a first and a second roller segment which are arranged axially next to one another in relation to the respective first axis of rotation and the first and second roller segments are mounted so as to be rotatable about the respective first axis of rotation, wherein

the first and the second roller segment are driven by the first drive unit in a matching direction of rotation, or

the first and the second roller segment are driven by the first drive unit in different directions of rotation.

13 . The edge machining assembly as claimed in claim 11 , wherein the first and the second roller segments are driven by the first drive unit in the matching direction of rotation at different rotational speeds.

14 . The edge machining assembly as claimed in claim 1 , wherein the plurality of holders each with a respective second axis of rotation are arranged one behind another along the closed guideway, and wherein each holder with a second axis of rotation guides a respective first axis of rotation of the respective cylindrical roller brush mounted in the respective holder, wherein two adjacent cylindrical roller brushes of the plurality of cylindrical roller brushes are driven by the first drive unit to rotate in mutually opposite directions of rotation, each about the respective first axis of rotation of the respective cylindrical roller brush.

15 . The edge machining assembly as claimed in claim 1 , further comprising

a sensor device for detecting one or more workpieces, wherein the sensor device is arranged at an upstream portion of the edge machining assembly in relation to a conveying direction of the one or more workpieces through the edge machining assembly, and

a controller connected for signal transmission to the sensor device and terms to a controller which is in turn connected in signaling terms-to one or more of the first, second, and third drive units, wherein the controller is configured to actuate one or more of the first, second, and third drive units based on a signal from the sensor device.

16 . The edge machining assembly as claimed in claim 15 , wherein the sensor device is a sensor strip which extends transversely to the conveying direction over a width of the edge machining assembly to optically scan the one or more workpieces and is configured to detect one or more properties selected from

one or more of a dimension and an alignment of a recess in a workpiece of the one or more workpieces,

a region of the workpiece that is bent out of a workpiece plane lying in the conveying direction,

a width dimension of the workpiece that extends in the width of the edge machining assembly, and

a workpiece thickness,

and wherein the controller is configured to receive via the signal transmission the one or more properties that are detected and to actuate one or more of the first, second, and third drive units based on the one or more properties.

17 . The edge machining assembly as claimed in claim 1 , further comprising

an adjustment device for setting the spacing of the plurality of cylindrical roller brushes each having a respective first axis of rotation from a workpiece support surface, and

an adjustment controller, wherein the adjustment device is connected for signal transmission to the adjustment controller which is configured to control the adjustment device to set a spacing or a contact pressure between each cylindrical roller brush and a workpiece supported on the workpiece support surface.

18 . The edge machining assembly as claimed in claim 17 , wherein the adjustment controller is configured to actuate the adjustment device based on one or more of

a drive parameter of the first, second or third drive unit,

a workpiece thickness, and

a wear state of the roller brushes.

19 . The edge machining assembly as claimed in claim 1 , further comprising

an edge rounding sensor device for detecting an edge rounding on one or more workpieces, wherein the edge rounding sensor device is arranged at a downstream portion of the edge machining assembly in relation to a conveying direction of the one or more workpieces through the edge machining assembly,

a controller connected for signal transmission to the edge rounding sensor device, and

a conveying device for conveying the one or more workpieces, wherein the conveying device is connected for signal transmission to the controller, and wherein the controller is configured to actuate the conveying device based on the edge rounding detected by the edge rounding sensor device.

20 . The edge machining assembly as claimed in claim 19 , further configured

for a first edge that is to be deburred on a workpiece that is characterized and stored in memory by the sensor device according to its-position, length, or spacing of the first edge from another edge, based on a comparison

of a first edge radius, ascertained after carrying out a first deburring operation performed with a first control data set, with a second edge radius, ascertained after carrying out a second deburring operation performed with a second control data set,

wherein each of the first control data set and the second control data set describes one or more of (i) an adjustment force between the cylindrical roller brushes and the workpiece, (ii) one or more of a direction, a sequence of changes in direction, and a speed of rotation of the each cylindrical roller brush about the respective first axis of rotation, (iii) the rotation of each cylindrical roller brush with a first axis of rotation about a respective second axis of rotation, and (iv) the movement of each holder with a respective second axis of rotation along the guideway,

to store in memory, as an optimized control data set, the first or the second control data set or a third control data set formed from the first and the second control data set by extrapolation or interpolation, if the comparison has produced a correspondingly better deburring operation as a result of the first or the second control data set or allows a better deburring operation to be expected as a result of the third control data set, and

to carry out a deburring operation at a subsequent time on a second edge, which is characterized similarly or correspondingly to the first edge according to position, length, or spacing of the second edge from another edge, using the optimized control data set.

21 . The edge machining assembly as claimed in claim 19 , wherein the controller is configured such that if an edge rounding is found that results in an edge radius which is smaller than a predetermined minimum edge radius, the controller actuates one or more of:

the conveying device to perform conveying in reverse to convey the workpiece back into the edge machining assembly and to control another machining operation by the edge machining assembly,

the first, second or third drive unit with a modified drive parameter, and

an adjustment device for setting the spacing of each first axis of rotation from a workpiece support surface to increase a contact pressure between the cylindrical roller brushes and the workpiece supported on the workpiece support surface.

22 . A wide surface grinding machine, comprising

a workpiece support surface,

a conveying device for conveying workpieces on the workpiece support surface, and

a plurality of grinding assemblies which are arranged one behind another in a row and are intended for the sequential machining by grinding of a workpiece conveyed by the conveying device, wherein one of the grinding assemblies is an edge machining assembly as claimed in claim 1 .

23 . The use of an edge machining assembly as claimed in claim 1 for one or more of deburring and rounding edges on a periphery or at recesses of a workpiece.

24 . The use of an edge machining assembly as claimed in claim 23 , wherein the workpiece is a plate-like workpiece.

25 . The edge machining assembly as claimed in claim 1 , wherein the second axis of rotation of at least one holder of the plurality of holders intersects the first axis of rotation of the respective cylindrical roller brush mounted in the at least one holder.

26 . The edge machining assembly as claimed in claim 25 , wherein each second axis of rotation of each respective holder of the plurality of holders intersects the respective first axis of rotation of the respective cylindrical roller brush mounted in the respective holder.

27 . A method for deburring and/or rounding edges on a workpiece, comprising steps of:

rotating a plurality of cylindrical roller brushes, each about a respective first axis of rotation, wherein each cylindrical roller brush is mounted in a respective holder of a plurality of holders, wherein each respective holder has a respective second axis of rotation,

rotating each cylindrical roller brush of the plurality of cylindrical roller brushes about the respective second axis of rotation which is assigned to the respective first axis of rotation and is not aligned parallel to the respective first axis of rotation, and

moving each respective holder having a respective second axis of rotation along a closed guideway.

28 . The method as claimed in claim 27 ,

wherein a position, alignment and/or a radius of an edge on the workpiece is ascertained as a measurement parameter by a sensor device before and/or after the deburring operation and

wherein (i) the direction and/or speed of rotation of the plurality of cylindrical roller brushes each about the respective first axis of rotation, (ii) the rotation of the cylindrical roller brushes each about the respective second axis of rotation of the respective holder in which the respective cylindrical roller brush is mounted, and (iii) the movement of the plurality of holders along the closed guideway are controlled based on the measurement parameter.

29 . The method as claimed in claim 27 , wherein

the respective first axis of rotation is parallel to a surface of the workpiece,

the respective second axis of rotation is aligned perpendicularly to the first axis of rotation, and

the closed guideway is in a plane aligned parallel to the first axes of rotation or perpendicularly to the second axes of rotation.