Granted Patent B2

US 7,171,278 · App. 10/857,852 · Granted Jan 30, 2007

Abstract

Claims (126)

1. In an apparatus for optimizing orientation of a workpiece in a planermill for feeding into a planer having:

a) a selectively actuable first cutterhead adjacent a first wide surface of the workpiece when in the planer, wherein the selectively actuable first cutterhead is selectively actuable so as to selectively adjust a depth of cut of the selectively actuable first cutterhead when planning the workpiece;

b) a fixed depth-of-cut second cutterhead adjacent a second wide surface opposite to said first wide surface;

c) a selectively actuable third cutterhead adjacent a first edge surface of the workpiece, wherein the third cutterhead is selectively actuable to adjust a depth-of-cut of the third cutterhead when planning the workpiece;

d) a fixed depth-of-cut fourth cutterhead adjacent a second edge surface opposite to the first edge surface;

wherein the apparatus includes infeed means to the planer, means for selectively turning the workpiece end-for-end upstream of the planer on the infeed means, and means for selectively flipping the workpiece one hundred eighty degrees about its longitudinal axis upstream of the planer on the infeed means,

a method of optimizing orientation of the workpiece for feeding into the planer comprising the steps of:

e) receiving data from a scanner for processing;

f) processing the received data from the scanner to detect and identify the location of the worst defects on the first and second oppositely oriented wide surfaces and on the first and second oppositely oriented edge surfaces of the workpiece;

g) orienting the workpiece by only flipping the workpiece one hundred eighty degrees about its longitudinal axis, when in said processing it is determined that:

(i) a worst defect exists on only the first wide surface of the workpiece and the workpiece has:

a) scant thickness and non-scant width, or

b) scant thickness and scant width;

(ii) a worst defect exists on only the second wide surface and the workpiece and the workpiece has:

a) non-scant thickness and non-scant width, or

b) non-scant thickness and scant width;

(iii) a worst defect exists on only the first edge surface and the workpiece has:

a) non-scant thickness and scant width, or

b) scant thickness and scant width;

(iv) a worst defect exists on only the second edge surface and the workpiece has:

a) non-scant thickness and non-scant width, or

b) non-scant thickness and scant width;

(v) worst defects exist on only the first wide surface and the first edge surface, and the workpiece has scant thickness and scant width;

(vi) worst defects exist on only the first wide surface and the second edge surface, and the workpiece has scant thickness and non-scant width;

(vii) worst defects exist on only the second wide surface and the first edge surface, and the workpiece has non-scant thickness and scant width; or

(viii) worst defects exist on only the second wide surface and the second edge surface, and the workpiece has non-scant thickness and non-scant width;

h) orienting the workpiece by only turning the workpiece one hundred eighty degrees about an axis generally orthogonal to the wide surfaces so as to turn the workpiece end-for-end, when in said processing it is determined that:

(i) worst defects exist on only the first wide surface and the first edge surface of the workpiece and the workpiece has non-scant thickness and scant width;

(ii) worst defects exist on only the first wide surface and the second edge surface of the workpiece and the workpiece has non-scant thickness and non-scant width;

(iii) worst defects exist on only the second wide surface and first edge surface, and the workpiece has scant thickness and scant width; or

(iv) worst defects exist on only the second wide surface and the second edge surface, and the workpiece has scant thickness and non-scant width;

i) orienting the workpiece by turning and flipping the workpiece one hundred eighty degrees end-for-end and one hundred and eighty degrees about its longitudinal axis respectively, when in said processing it is determined that:

(i) worst defects exist on only the first wide surface and the first edge surface and the workpiece has scant thickness and non-scant width;

(ii) worst defects exist on only the first wide surface and the second edge surface and the workpiece has scant thickness and scant width;

(iii) worst defects exist on only the second wide surface and the first edge surface and the workpiece has non-scant thickness and non-scant width; or

(iv) worst defects exist on only the second wide surface and the second edge surface and the workpiece has non-scant thickness and scant width.

2. The method of claim 1 further comprising the step of weighting a priority face or edge of the workpiece when making an orientation decision for a workpiece.

3. A computer program product for use in an apparatus for optimizing orientation of a workpiece for feeding into a planer, wherein the planer includes:

a) a selectively actuable first cutterhead adjacent a first wide surface of the workpiece when in the planer, wherein the selectively actuable first cutterhead is selectively actuable so as to selectively adjust a depth of cut of the selectively actuable first cutterhead when planning the workpiece;

b) a fixed depth-of-cut second cutterhead adjacent a second wide surface opposite to said first wide surface;

c) a selectively actuable third cutterhead adjacent a first edge surface of the workpiece, wherein the third cutterhead is selectively actuable to adjust a depth-of-cut of the third cutterhead when planning the workpiece;

d) a fixed depth-of-cut fourth cutterhead adjacent a second edge surface opposite to the first edge surface;

and wherein the machine includes infeed means to the planer, means for selectively turning the workpiece end-for-end upstream of the planer on the infeed means, and means for selectively flipping the workpiece one hundred eighty degrees about its longitudinal axis upstream of the planer on the infeed means,

the computer program product comprising:

e) a computer usable medium having computer readable program code means embodied in said medium for causing receiving data from the scanner for processing;

f) computer readable program code means for causing processing the received data from the scanner to detect and identify the location of the worst defects on the first and second oppositely oriented wide surfaces and on the first and second oppositely oriented edge surfaces of the workpiece;

g) computer readable program code means for causing orienting the workpiece by only flipping the workpiece one hundred eighty degrees about its longitudinal axis, when in said processing it is determined that:

(i) a worst defect exists on only the first wide surface of the workpiece and the workpiece has:

a) scant thickness and non-scant width, or

b) scant thickness and scant width;

(ii) a worst defect exists on only the second wide surface and the workpiece and the workpiece has:

a) non-scant thickness and non-scant width, or

b) non-scant thickness and scant width;

(iii) a worst defect exists on only the first edge surface and the workpiece has:

a) non-scant thickness and scant width, or

b) scant thickness and scant width;

(iv) a worst defect exists on only the second edge surface and the workpiece has:

a) non-scant thickness and non-scant width, or

b) non-scant thickness and scant width;

(v) worst defects exist on only the first wide surface and the first edge surface, and the workpiece has scant thickness and scant width;

(vi) worst defects exist on only the first wide surface and the second edge surface, and the workpiece has scant thickness and non-scant width;

(vii) worst defects exist on only the second wide surface and the first edge surface, and the workpiece has non-scant thickness and scant width; or

(viii) worst defects exist on only the second wide surface and the second edge surface, and the workpiece has non-scant thickness and non-scant width;

h) computer readable program code means for causing orienting the workpiece by only turning the workpiece one hundred eighty degrees about an axis generally orthogonal to the wide surfaces so as to turn the workpiece end-for-end, when in said processing it is determined that:

(i) worst defects exist on only the first wide surface and the first edge surface of the workpiece and the workpiece has non-scant thickness and scant width;

(ii) worst defects exist on only the first wide surface and the second edge surface of the workpiece and the workpiece has non-scant thickness and non-scant width;

(iii) worst defects exist on only the second wide surface and first edge surface, and the workpiece has scant thickness and scant width; or

(iv) worst defects exist on only the second wide surface and the second edge surface, and the workpiece has scant thickness and non-scant width;

i) computer readable program code means for causing orienting the workpiece by turning and flipping the workpiece one hundred eighty degrees end-for-end and about its longitudinal axis respectively, when in said processing it is determined that:

(i) worst defects exist on only the first wide surface and the first edge surface and the workpiece has scant thickness and non-scant width;

(ii) worst defects exist on only the first wide surface and the second edge surface and the workpiece has scant thickness and scant width;

(iii) worst defects exist on only the second wide surface and the first edge surface and the workpiece has non-scant thickness and non-scant width; or

(iv) worst defects exist on only the second wide surface and the second edge surface and the workpiece has non-scant thickness and scant width.

4. The computer program product of claim 3 further comprising computer readable program code means for weighting a priority face or edge of the workpiece when making an orientation decision for the workpiece.

5. An apparatus for optimizing orientation of a workpiece in a planermill for feeding of the workpiece into a planer, the apparatus comprising:

a planer having:

a) a selectively actuable first cutterhead adjacent a first wide surface of the workpiece when in the planer, wherein the selectively actuable first cutterhead is selectively actuable so as to selectively adjust a depth of cut of the selectively actuable first cutterhead when planning the workpiece;

b) a fixed depth-of-cut second cutterhead adjacent a second wide surface opposite to said first wide surface;

c) a selectively actuable third cutterhead adjacent a first edge surface of the workpiece, wherein the third cutterhead is selectively actuable to adjust a depth-of-cut of the third cutterhead when planning the workpiece;

d) a fixed depth-of-cut fourth cutterhead adjacent a second edge surface opposite to the first edge surface;

infeed means to the planer, means for selectively turning the workpiece end-for-end upstream of the planer on the infeed means, and means for selectively flipping the workpiece one hundred eighty degrees about a longitudinal axis of the workpiece upstream of the planer on the infeed means,

a scanner on said infeed means for detecting defects on the workpiece, said scanner upstream of said means for selectively turning the workpiece and said means for selectively flipping the workpiece,

a processor cooperating with said scanner and said means for selectively turning the workpiece and said means for selectively flipping the workpiece for optimizing the orientation of the workpiece relative to said first, second, third and fourth cutterheads.

6. The apparatus of claim 5 wherein said processor comprises:

a) means for receiving data from said scanner for processing in said processor

b) means for processing the received data from said scanner to detect and identify the location of worst defects on the first and second oppositely oriented wide surfaces and on the first and second oppositely oriented edge surfaces of the workpiece

c) means for actuating said means for selectively flipping the workpiece so as to orient the workpiece by only flipping the workpiece one hundred eighty degrees about its longitudinal axis, when said means for processing determines that:

(i) a worst defect exists on only the first wide surface of the workpiece and the workpiece has:

a) scant thickness and non-scant width, or

b) scant thickness and scant width;

(ii) a worst defect exists on only the second wide surface and the workpiece and the workpiece has:

a) non-scant thickness and non-scant width, or

b) non-scant thickness and scant width;

(iii) a worst defect exists on only the first edge surface and the workpiece has:

a) non-scant thickness and scant width, or

b) scant thickness and scant width;

(iv) a worst defect exists on only the second edge surface and the workpiece has:

a) non-scant thickness and non-scant width, or

b) non-scant thickness and scant width;

(v) worst defects exist on only the first wide surface and the first edge surface, and the workpiece has scant thickness and scant width;

(vi) worst defects exist on only the first wide surface and the second edge surface, and the workpiece has scant thickness and non-scant width;

(vii) worst defects exist on only the second wide surface and the first edge surface, and the workpiece has non-scant thickness and scant width; or

(viii) worst defects exist on only the second wide surface and the second edge surface, and the workpiece has non-scant thickness and non-scant width;

d) means for actuating said means for selectively turning the workpiece so as to orient the workpiece by only turning the workpiece one hundred eighty degrees about an axis generally orthogonal to the wide surfaces so as to turn the workpiece end-for-end, when said means for processing determines that:

(i) worst defects exist on only the first wide surface and the first edge surface of the workpiece and the workpiece has non-scant thickness and scant width;

(ii) worst defects exist on only the first wide surface and the second edge surface of the workpiece and the workpiece has non-scant thickness and non-scant width;

(iii) worst defects exist on only the second wide surface and first edge surface, and the workpiece has scant thickness and scant width; or

(iv) worst defects exist on only the second wide surface and the second edge surface, and the workpiece has scant thickness and non-scant width;

e) means for actuating said means for selectively turning the workpiece and said means for selectively flipping the workpiece so as to orient the workpiece by turning and flipping the workpiece one hundred eighty degrees about its longitudinal axis respectively, when said means for processing determines that:

(i) worst defects exist on only the first wide surface and the first edge surface and the workpiece has scant thickness and non-scant width;

(ii) worst defects exist on only the first wide surface and the second edge surface and the workpiece has scant thickness and scant width;

(iii) worst defects exist on only the second wide surface and the first edge surface and the workpiece has non-scant thickness and non-scant width; or

(iv) worst defects exist on only the second wide surface and the second edge surface and the workpiece has non-scant thickness and scant width.

7. The apparatus of claim 6 wherein said means for processing weights a priority face or edge of the workpiece when making an orientation decision for the workpiece.

8. The apparatus of claim 5 wherein said means for selectively turning the workpiece includes:

a) a selectively actuable workpiece diverter on said infeed means for selectively removing a workpiece from said infeed means,

b) a turn transfer cooperating with said workpiece diverter,

c) a return transfer for translating the workpiece, once turned, upstream along said infeed means,

d) a workpiece conveyer for conveying the workpiece from said return transfer to said infeed means once upstream along said infeed means.

9. The apparatus of claim 8 wherein said means for selectively flipping the workpiece includes an automatic board turner for flipping the workpiece about its longitudinal axis.

10. The apparatus of claim 8 wherein said workpiece diverter is a dropout gate.

11. The apparatus of claim 5 wherein said scanner is for detecting wane on the workpiece, and wherein said worst defects are areas of worst wane on the surfaces of the workpiece, and wherein the workpiece is a board.

12. The apparatus of claim 11 wherein said scanner is an optical scanner.

13. The apparatus of claim 12 wherein said turn transfer is a one hundred eighty degree arcuate transfer extending under said infeed means, and wherein a lateral conveyer feeds the workpiece from said dropout gate onto said turn transfer.

14. The apparatus of claim 13 wherein said return transfer is parallel to said infeed means.

15. The apparatus of claim 14 wherein both said return transfer and said infeed means include lugged transfer chains.

Assignments (10)