公开(公告)号：FI84708C

公开(公告)日：1992-01-10

申请号：FI873849

申请日：1987-09-04

Applicant: IGGESUND TOOLS AB

Inventor： SUNDBERG AOKE ,  LINDMARK GUNNAR

IPC: B27L20060101 ,  B27L11/00

公开(公告)号：FI873849A

公开(公告)日：1987-09-04

申请号：FI873849

申请日：1987-09-04

Applicant: IGGESUND TOOLS AB

Inventor： SUNDBERG AOKE ,  LINDMARK GUNNAR

IPC: B27L20060101 ,  B27L11/00 ,  B27L

Abstract: The invention relates to a process for forming an at least partially helical log guiding surface for the disc 15 of a chopping machine. The log guiding surface comprises a knife holder 2, which secures essentially radial knives 1 and thereto adjoining wearing plates 5. The plane-surfaced products of the knife holders 2 are fastened to the grinding fixture, bent in a shape corresponding to the mirror image of the desired shape, and are ground so that they are plane-shaped in this position, the clamp-freed element, secured in place on the chopping machine disc, forming part of the screw surface in the desired shape. At the same time, a helical surface for the wearing plates 5 is configured such that the products of the wearing plates 5 are clamped in a grinding fixture, bent in a shape corresponding to the mirror image of the desired shape, and are plane-ground. The wearing plates 5 which have been ground and freed from the grinding fixture then acquire, clamped in the chopping disc 15, the desired helical shape.

公开(公告)号：FI84708B

公开(公告)日：1991-09-30

申请号：FI873849

申请日：1987-09-04

Applicant: IGGESUND TOOLS AB

Inventor： SUNDBERG AOKE ,  LINDMARK GUNNAR

IPC: B27L20060101 ,  B27L11/00

公开(公告)号：FI873849A0

公开(公告)日：1987-09-04

申请号：FI873849

申请日：1987-09-04

Applicant: IGGESUND TOOLS AB

Inventor： SUNDBERG AOKE ,  LINDMARK GUNNAR

IPC: B27L20060101 ,  B27L11/00 ,  B27L

公开(公告)号：FI74901C

公开(公告)日：1988-04-11

申请号：FI803893

申请日：1980-12-12

Applicant: IGGESUND TOOLS AB

Inventor： SUNDBERG AOKE ,  LINDMARK GUNNAR

IPC: B27L11/00

公开(公告)号：FI74901B

公开(公告)日：1987-12-31

申请号：FI803893

申请日：1980-12-12

Applicant: IGGESUND TOOLS AB

Inventor： SUNDBERG AOKE ,  LINDMARK GUNNAR

IPC: B27L11/00

Abstract: Device for use in connection with wood chippers of the type comprising a rotary disc (15) whereof one face is fitted with substantially radially positioned knives (1) which are attached thereto by means of knife holders (2) incorporating a log guiding surface. To give a twisted form to one face of the knife holders (2) the latter are fabricated by surface grinding of the log guiding face while the knife holder (2) is clamped in a grinding fixture (20) in a state of torsion which, after removal from the grinding fixture, gives the desired twisted shape to the log guiding face. After removal from the grinding fixture (20) the knife holder (2) is clamped in a torsion-free state in the chipping disc (15).