A circular planer arrangement with three planer sections

Abstract

The disclosure relates to a planer arrangement for wood materials, said arrangement comprising a circular planer head (1) being formed by a central planer head section (1a), a first side planer head section (1b) and a second side planer head section (1c), wherein the planer head sections (1a, 1b, 1c) are circular and rotatably arranged together around a common hub section (2). Furthermore, the central planer head section (1a) is provided with a number of surface cutting elements (3) arranged around its periphery, said surface cutting elements being configured for cutting side surfaces (6a) of said wood materials; and each one of said side planer head sections (1b, 1c) is provided with a number of side cutting elements (5) arranged around its periphery, said side cutting elements (5) being configured for cutting curved sections (6b, 6c) of said wood materials.

Description

[0001] P10519SEPC

[0002] 2026-01-20

[0003] 1

[0004] TITLE A PLANER ARRANGEMENT

[0005] TECHNICAL FIELD

[0006] The invention relates to a planer arrangement for wood products, said arrangement comprising a circular planer head being formed by a central planer head section, a first side planer head section and a second side planer head section, wherein the planer head sections are circular and rotatably arranged together around a common hub section.

[0007] BACKGROUND

[0008] In the field of industrial wood working, it is common to use different types of tools, such as for example circular planer arrangements, for planing treatment of different types of wood materials and in different types of wood treatment processes.

[0009] In particular, there is a demand for high precision planer arrangements and processes for planing of construction lumber in high volumes and with high speed. Such wood material is often manufactured as studs with plane side surfaces and with curved or slanted edges (i.e. corners).

[0010] The wood material which is treated by planing arrangements is normally placed on a planer table and is fed past a circular planer head which is provided with cutting elements or cutting knives which are positioned along the periphery of the planer head. The wood material is then transported out of the planer arrangement after the planing of the side surfaces and corners. In this manner, the cutting elements can be used for cutting off layers of wood from the lumber which is processed.

[0011] Process parameters such as the dimensions and geometry of the planar head can be adjusted depending on requirements related to the smoothness and the quality of the wood material which is processed.P10519SEPC

[0012] 2026-01-20

[0013] 2

[0014] According to known technology, there is shown in the patent document US 2005 / 205162 a circular planer head being formed by a circular center portion which carries a set of circumferentially spaced apart knives, and also two circular corner-cutting portions which are positioned on each side of the center portion.

[0015] The center portion is configured for cutting planar side faces of a lumber product, whereas the corner-cutting portions are configured for cutting along the corners, i.e. the edges, of the lumber product. For this purpose, each knife is mounted in a pocket along the periphery of the planer arrangement.

[0016] Consequently, it is previously known to provide an arrangement for planing of wood materials which is based on a circular planer head which is provided with cutting elements arranged around the periphery of the planer head. The cutting elements are dimensioned and configured for cutting the sides and corners of the wood material in question.

[0017] It is known that the cutting elements will wear out and become dull after a certain time of operation. In such a situation, the cutting elements need to be resharpened in order to prepare them for further use. However, a disadvantage wih such a concept is that the dimensions of the cutting elements will gradually change after such re-sharpening, especially if it has been carried out several times. This is particularly problematic as regards the corner sections of the cutting elements, since the resharpening process leads to gradually changing dimensions.

[0018] Furthermore, resharpening of cutting elements leads to certain costs and also operation downtime.

[0019] Consequently, is it noted that although there are previously known solutions in the form of existing planer head arrangements, there is a desire to provide improved technical solutions which solve the above-mentioned problems. In particular, thereP10519SEPC

[0020] 2026-01-20

[0021] 3

[0022] is a desire to prevent the diameter of the cutting elements on a planer head arrangement from decreasing gradually after long periods of operation, which obviously affects the accuracy of the planer head arrangement over time in a negative manner.

[0023] In summary, in today's technology for planing wood products, there is a need for further improvements in order to solve the above-mentioned problem.

[0024] SUMMARY

[0025] Consequently, an object of the invention is to provide a method for planing wood objects by means of a planer head arrangement in which the above-mentioned disadvantages can be avoided.

[0026] The above-mentioned object is achieved by a planer arrangement for wood materials, said arrangement comprising a circular planer head being formed by a central planer head section, a first side planer head section and a second side planer head section, wherein the planer head sections are circular and arranged around a common hub section. Furthermore, the central planer head section is provided with a number of surface cutting elements arranged around its periphery, said surface cutting elements being configured for cutting side surfaces of said wood materials; and each one of said side planer head sections is provided with a number of side cutting elements arranged around its periphery, said side cutting elements being configured for cutting curved sections of said wood materials.

[0027] According to an embodiment, each one of said side cutting elements is mounted on a corresponding element mounting seat which is positioned on a corresponding side planer head section; said mounting seat being configured with a mounting surface which corresponds to a bottom surface of said cutting element.

[0028] According to an embodiment, said mounting surface is oriented along a plane which shows a predetermined tilt angle (a1) with reference to a central axis extending through said planer arrangement.P10519SEPC

[0029] 2026-01-20

[0030] 4

[0031] According to an embodiment, said tilt angle (a1) is within the interval of 25° - 65°.

[0032] According to an embodiment, said tilt angle (a1) is approximately 45°.

[0033] According to an embodiment, each mounting seat is arranged so that the corresponding side cutting element is arranged with a side clearance angle (cc2) which is defined as an angle of rotation of the side cutting element in its position in the mounting seat of the planer arrangement.

[0034] According to an embodiment, said side clearance angle (a.2) is generally within the interval 0-10°.

[0035] According to an embodiment, said side clearance angle (a.2) is approximately 2°.

[0036] According to an embodiment, each mounting seat is arranged so that the corresponding side cutting element is arranged with a rear clearance angle (a.3) which is defined as the deviation of the side cutting element between its front cutting edge and its rear edge.

[0037] According to an embodiment, said rear clearance angle (a3) is of a magnitude which depends on the outer diameter of the planer head sections and which is calculated according to:

[0038] minimum, the diameter / 1000 x 1

[0039] maximum, the diameter / 1000 x 5.

[0040] According to an embodiment, said rear clearance angle (a3) is of a magnitude as calculated according to:

[0041] the diameter / 1000 x 1.45.P10519SEPC

[0042] 2026-01-20

[0043] 5

[0044] According to an embodiment, said side cutting element is releasably fastenable and pivotable between four different rotational positions, and that said side cutting element has a front cutting edge for each of said positions.

[0045] An important advantage of the invention relates to the fact that the cutting elements according to the invention do not have to be subject to any resharpening or service work. This is an important advantage of the invention, both due to the fact that the amount of downtime and the service cost can be minimized, but also due to the fact that no changes of the dimensions of the cutting elements occur due to a resharpening process, as is the case according to prior art.

[0046] BRIEF DESCRIPTION OF THE DRAWINGS

[0047] The invention will now be described more in detail with reference to the accompanying drawings, in which:

[0048] Fig. 1 shows a planer arrangement for wood materials, more precisely in the form of a circular planer head;

[0049] Fig. 2 shows the planer head according to Fig. 1 , in a perspective view showing the planer head displayed as three separate planer head sections;

[0050] Fig. 3 shows the planer arrangement including a number of cutting elements to be used in a planing process of a suitable wooden material;

[0051] Fig. 4 shows a section of a side planer head section including two cutting elements;

[0052] Figs. 5a-d show four different views of a cutting element used in each one of the side planer head sections;P10519SEPC

[0053] 2026-01-20

[0054] 6

[0055] Fig. 6 corresponds to Fig. 4 but without the cutting elements, i.e. showing a mounting seat in which a cutting element should be mounted and fastened;

[0056] Fig. 7 is a perspective view of a cutting element, showing in particular a tilt angle of said cutting element;

[0057] Fig. 8 is a further perspective view of a cutting element, showing in particular a side clearance angle of said cutting element; and

[0058] Fig. 9 is a further perspective view of a cutting element, showing in particular a rear clearance angle and a cutting angle of said cutting element.

[0059] DETAILED DESCRIPTION

[0060] Different embodiments of the present invention will now be described with reference to the accompanying drawings. The arrangements described below and defined in the appended claims can be realized in different forms and should not be construed as being limited to the embodiments described below.

[0061] With reference to Fig. 1, there is shown a perspective view of a generally circular planer head 1 which is used for planing of construction lumber and other types of wood products during an industrial wooden manufacturing process.

[0062] The main purpose of the planer head 1 is to provide a smooth and precise finish of the surfaces of construction studs and other wood products. The planer head 1 can be used used in industrial high-volume, high-speed operation involving planing of the side surfaces and corners of such studs. Also, the planer head 1 is provided with certain cutting elements for such surfaces and corners, as will be described below.P10519SEPC

[0063] 2026-01-20

[0064] 7

[0065] The planer head 1 shown in Fig. 1 comprises a hub 2 which is mounted on an axis (not shown) which is arranged to be operated by a motor, for rotating at a suitable high speed. Furthermore, the planer head 1 comprises an arrangement of cutting elements positioned along the periphery of the planer head 1. These elements are constituted by a number of centrally placed cutting knives 3, for cutting the side surfaces of a construction stud or a similar wood product, and also by a number of cutting elements in the form of corner cutting knives 4, 5 which are adapted for processing the corner of such wood products.

[0066] The central cutting knives 3 and the corner cutting knives 4, 5 are arranged in a spaced apart manner along the periphery of the planer head 1 , suitably at equal distances.

[0067] Fig. 2 shows a perspective view of the planer head 1 but separated and divided into three different sections, i.e. a central planer head section 1a and also a first and a second side planer head section 1b, 1c.

[0068] The central planer head section 1a carries the above-mentioned central cutting knives 3, whereas the side planer head sections 1b, 1c each carries a set of the above-mentioned side corner cutting knives 4, 5.

[0069] As shown in greater detail in Fig. 3, each set of cutting knives 3 is provided with a number of face-cutting portions 3a, 3b, which can be arranged in different configurations. The purpose of the face-cutting portions 3a, 3b is to provide planing of the side surfaces of the wood products in question. Such a process is generally known according to prior technology. However, one purpose of the present invention is to combine such a process of planing the side surfaces with a process of planing the corners in an optimal manner.

[0070] Furthermore, the first side planer head section 1 b comprises a first set of side cutting knives 4, whereas the second side planer head section 1c comprises a second set of side cutting knives 5. The first and second sets 4, 5 of cutting knivesP10519SEPC

[0071] 2026-01-20

[0072] 8

[0073] are suitably arranged in a similar manner as regards the actual planing process. These first and second sets cutting elements in the form of cutting knives 4, 5 are configured for planing the longitudinal extending edges, i.e. the corners, of the wood material in question.

[0074] An important feature of the planer arrangement according to this disclosure relates to the geometry of the sets of cutting knives 4, 5. More precisely, certain geometrical parameters of the sets of cutting knives 4, 5 (and the manner in which they are fastened to each one of the side planer head sections 1b, 1c) have been selected and optimized in order to obtain an improved planing operation, as compared to previously known planing arrangements. This will be described in greater detail below.

[0075] Fig. 3 shows a view along the periphery of the planer head 1, showing also (in cross-section) an article of wood material, i.e. a lumber artice in the form of a conventional wooden stud 6, which is shown in order to clarify the operation of the invention. During operation, the planer head 1 is rotated and arranged so that the central cutting knives 3 operates on a side surface 6a of the lumber article 6, whereas the side cutting knives 4, 5 operates on two corner sections 6b, 6c of the lumber article 6, while the wood stud 6 is fed past the planer head 1 at a certain predetermined operating speed.

[0076] Furthermore, Fig. 4 shows a perspective view of a section of a side planer head section 1c which is provided with a number of side cutting knives 5. Consequently, Fig. 4 does not show the central planer head section 1a or the first side planer head section 1b. Also, Fig. 4 shows in a simplified manner the position of a wood stud 6 which is positioned and fed towards the planer arrangement 1 in a manner so that a corner edge section 5a of each side cutting knife will be used for planing a corresponding corner section 6a of the wood stud 6.

[0077] The direction of rotation of the planer arrangement 1 is indicated by means of an arrow in Fig. 4.P10519SEPC

[0078] 2026-01-20

[0079] 9

[0080] It should be noted that the side cutting elements 5 (in both the first and the second side planer head sections 1b, 1c) are shaped with four equally formed sides and four equally formed edges 5a, 5b, 5c, 5d for cutting the wood article 6.

[0081] Furthermore, the side cutting elements 5 are configured to be releasably fastened in its corresponding side planer head section 1c so that it initially can be operated with the use of the first cutting edge 5a and, after a certain operation time, can be pivoted 90 degrees, then refastened, and then operated with its second cutting edge 5b, and then similarly with the third cutting edge 5c and finally the fourth cutting edge 5d. This means that, in most applications of the invention for planing conventional wood articles, the side cutting elements 5 are not subject to any resharpening or service work. This is an important advantage of the invention, both due to the fact that downtime and service cost can be minimized, but also due to the fact that no changes of the dimensions of the cutting elements occur due to a resharpening process, as is the case according to prior art, as described above.

[0082] A single side cutting element 5 is shown in different perspective views in each one of Figs. 5a-5d. Each one of the side cutting elements 5 which are mounted along the periphery of the side planer head section 1c are equally designed. More precisely, a cutting element 5 is formed symmetrically so that the side cutting knife 5 can be pivoted so as to assume four different positions when it is positioned on the side planer head.

[0083] Consequently, each cutting knife in the corner-cutting portions is suitably formed with four corner-cutting edges 5a, 5b, 5c, 5d (see also Fig. 4) so that the knife can be used in one of its four positions and so that it has a 90 degree rotational symmetry. For each of its four positions, there is consequently a corner-cutting edge which is used for the planing process of the corners of the wood element in question.P10519SEPC

[0084] 2026-01-20

[0085] 10

[0086] It is suitable that the front surfaces of each cutting element, i.e. all four front surfaces around its perimeter which face the wood material, are shaped in a slightly convex manner, in order to allow an optimal cutting operation. This convex structure is shown in particular in Fig. 5d, with reference to shape and design of the first cutting edge 5a.

[0087] Also, each side cutting element 5 is formed with a generally planar bottom surface 5e (see in particular Fig. 5c), which is formed so as to fit into a corresponding cutting element seat 7, which forms part of the side planer head section 1c and which is shown separately in Fig. 6. The corner-cutting edges 5a-d are shaped as recesses extending from a top surface of each cutting element 5 (see for example Fig. 5c). Furthermore, each side cutting element 5 is positioned and fastened into a seat surface 8 which forms part of the cutting element seat 7 and which is shaped so as to correspond to the bottom surface 5e of the side cutting element 5. Also, the cutting element 5 is fastened to the cutting element seat 7 by means of a fastening bolt 9 (which is shown in Fig. 4) extending through a hole 10 in the cutting element 5 and which is fastened in a further hole 11 in the cutting element seat 7.

[0088] Consequently, Fig. 6 shows the side planer head section 1c without any side cutting knife 5 being mounted. As a result, Fig. 6 shows a side planer head section 1c with a mounting seat 7 which has a generally planar bottom mounting surface 8 and a central hole 11 by means of which a corresponding cutting element 5 can be mounted by means of the fastening bolt 9 (see Fig. 4).

[0089] An essential aspect of the present disclosure relates to the fact that each one of the side cutting element 5 is mounted to the side planer head section 1c in a specific geometrically optimized manner, as regards a tilt angle a1 , a side clearance angle a2, a rear clearance angle a3, and also a cutting angle a4 of each cutting element 5. These different angles will be described in greater detail below and with reference to Figs. 7-9.P10519SEPC

[0090] 2026-01-20

[0091] 11

[0092] The angles <x1 , <x2, a3 and a4 are defined as a consequence of the geometry of each side planer head section 1b, 1c. and how the cutting elements 5 are fastened the corresponding side planer head section. In other words, the cutting elements as such 5 are neutral in the sense that they are not shaped with any specific tilt angle, clearance angle or cutting angle.

[0093] Fig. 7 shows a side cutting element 5 which is mounted in a corresponding mounting seat 7 in a side planer head section 1c. The so-called tilt angle a1 is defined as the angle between a rotation axis for the planer head arrangement 1 (i.e. extending through the centre of rotation of the planer head arrangement 1) and an imaginary plane 12 which extends along the mounting surface 8 of the mounting seat 7. This angle oc1 is shown in Fig. 7.

[0094] According to an embodiment of the planer arrangement 1, the tilt angle a1 is generally within the interval of 25° - 65°, and preferably of the magnitude 45°.

[0095] Furthermore, and with reference to an aspect shown in Fig. 8, it should be noted that a side clearance angle a2 is defined as an angle of rotation of the cutting element 5 with reference to the axial angle of the planer arrangement 1. The mounting seat 7 is consequently shaped so that the cutting element 5 is positioned with a certain angle of rotation (i.e. with reference to an imaginary axis of rotation 13 as defined by the fastening bolt 9 which is used for fastening the cutting element 5), clock-wise according to the view shown in Fig. 8. This means that the front surface of the cutting element 5 is slightly angled, or rotated, with regard to the extension of the side planer head section 1c, which simplifies the cutting operation. Also, the term “axial angle” (see Fig. 8) refers to a condition in which a cutting element is slightly slanted, as viewed from above, in relation to the direction of the rotation axis of the arrangement.

[0096] According to an embodiment of the planer arrangement 1, the side clearance angle oc2 is generally of the magnitude 0-10°, preferably approximately 2°.P10519SEPC

[0097] 2026-01-20

[0098] 12

[0099] Furthermore, and with reference to an embodiment shown in Fig. 9, the cutting element 5 is positioned with a rear clearance angle a3, which can be defined as the deviation of the cutting element 5 between its front cutting edge 5a and its rear cutting edge 5c (wherein the different edges 5a-5d of the cutting element 5 are also shown in Fig. 4), along the peripheral direction of the planer arrangement 1 , and so that the rear cutting edge 5c defines a smaller diameter of the side planer head section 1c than the front cutting edge 5a.

[0100] The rear clearance angle a3 is defined in accordance with an equation, in which:

[0101] the diameter / 100 x 1.45 = the reduction of the diameter per angle of 1 °;

[0102] where the angle of 1° is created by means of a line which is rotated around the centre of the tool in relation to the line between centre of the tool and the highest cutting point of the cutting element 5.

[0103] According to an embodiment, a suitable interval as regards the rear clearance angle a3 is as follows:

[0104] minimum: diameter / 1000 x 1

[0105] maximum: diameter / 1000 x 5

[0106] A most preferred embodiment of the rear clearance angle «3 corresponds to the following:

[0107] diameter / 1000 x 1.45

[0108] This results in a rear clearance angle a3 of (for example) approximately 5° for a tool, i.e. a planer head arrangement, having a diameter of 340 mm (being an example only). This also means that the preferred rear clearance angle a3 isP10519SEPC

[0109] 2026-01-20

[0110] 13

[0111] chosen as a value which is calculated depending on the diameter of the arrangement, i.e. diameter which is defined by the outer cutting edges around the periphery of the arrangement.

[0112] Additionally, it should be noted that, according to an embodiment, the cutting element 5 can also be formed with a specific cutting angle a4, as defined by the front surface of the cutting edge 5a. This is also shown in Fig. 9. The cutting angle a5 is chosen to a value which provides an efficient cutting operation. According to an embodiment, the cutting angle a5 is within the interval 15°-75°, most preferably approximately 45°.

[0113] In summary, this disclosure relates to a planer arrangement for wood materials. The arrangement is based on a circular planer head 1 which is formed by a central planer head section 1a, a first side planer head section 1b and a second side planer head section 1 c. The planer head sections 1a, 1b, 1c are circular and arranged to be rotated together around a common hub section 2.

[0114] In particular, the central planer head section 1a is provided with a number of surface cutting elements 3 arranged around its periphery, wherein the cutting elements are configured for cutting the side surfaces of a wood object. Also, each one of the side planer head sections 1b, 1 c is provided with a number of side cutting elements 5 which are arranged around its periphery, wherein the side cutting elements 5 are configured for cutting the curved sections (i.e. the edges, or corners) of said wood materials. Also, according to possible embodiments, each side cutting element 5 is mounted with an optimized geometrical manner, as regards a selection of one or more of the above-mentioned tilt angle a1 , side clearance angle a2, rear clearance angle a3, and cutting angle a4. These different angles are described in greater detail above and with reference to Figs. 7-9.

[0115] According to an embodiment, and referring in particular to Figs. 5-7, each one of the side cutting elements 5 is mounted on a corresponding element mounting seat 7 which is positioned on a corresponding side planer head section 1b, 1c (see inP10519SEPC

[0116] 2026-01-20

[0117] 14

[0118] particular Figs. 2, 4 and 7), It should be noted that the mounting seat 7 is configured with a mounting surface 8 (see Fig. 6) which has a design and geometry which corresponds to the bottom surface 5e of the corresponding cutting element 5 (see in particular Fig. 5c). This mounting surface 8 is oriented generally along an imaginary plane 12 as schematically indicated in Fig. 7. Furthermore, a corresponding cutting element 5 is mounted in the mounting surface 8 so that the bottom surface 5e is in contact with the mounting surface 8. The mounting of the cutting element 5 is carried out by fastening it to the cutting element seat 7 (shown in Fig. 6) by means of the fastening bolt 9 (Fig. 4) which then extends through a hole 10 (see for example Fig. 5b) in the cutting element 5 and which is fastened in a further hole 11 (see Fig. 6) in the cutting element seat 7.

[0119] The mounting of the cutting elements 5 as described is carried out in a manner to ensure that the plane 12 has an extension which corresponds to that of the mounting surface 8, and is arranged in a manner so that it defines a specific tilt angle (<x1), i.e. which corresponds to the angle between the plane 12 (along which the mounting surface 8 extends) and a central axis which extends through the planer arrangement 1 as shown in Fig. 7. According to an embodiment, the tilt angle (a1 ) is within the interval of 25° - 65°, but other values for said angle are also possible. The interval of 25° - 65° allows a mounting of each cutting element in a suitably tilted manner on a mounting surface 8 in relation to said central axis. This is particularly advantageous since it will provide advantages such as a more optimal cutting performance than known planer arrangements, especially for cutting studs with plane side surfaces and rounded corners.

[0120] It should be noted that, by means of the invention, certain advantages such as an improved cutting quality and performance, and also an increased productivity, can be obtained. Also, a so-called “constant system” is provided by means of the invention, where generally no resharpening is required during the lifetime of the planer arrangement.P10519SEPC

[0121] 2026-01-20

[0122] 15

[0123] Finally, the inventive concept is not limited to the embodiments above but can be varied within the scope of the appended claims.

Claims

P10519SEPC2026-01-2016CLAIMS1. A planer arrangement for wood materials, said arrangement comprising a circular planer head (1) being formed by a central planer head section (1a), a first side planer head section (1b) and a second side planer head section (1c), wherein the planer head sections (1a, 1b, 1c) are circular and rotatably arranged together around a common hub section (2); characterized in that:the central planer head section (1a) is provided with a number of surface cutting elements (3) arranged around its periphery, said surface cutting elements being configured for cutting side surfaces (6a) of said wood materials; and that each one of said side planer head sections (1b, 1c) is provided with a number of side cutting elements (5) arranged around its periphery, said side cutting elements (5) being configured for cutting curved sections (6b, 6c) of said wood materials.

2. A planer arrangement according to claim 1 , wherein each one of said side cutting elements (5) is mounted on a corresponding element mounting seat (7) which is positioned on a corresponding side planer head section (1b; 1c); said mounting seat (7) being configured with a mounting surface (8) which corresponds to a bottom surface (5d) of said cutting element (5).

3. A planer arrangement according to claim 2, wherein said mounting surface (8) is oriented along a plane (12) which shows a predetermined tilt angle (a1) with reference to a central axis extending through said planer arrangement (1).

4. A planer arrangement according to claim 3, wherein said tilt angle (a1) is within the interval of 25° - 65°.

5. A planer arrangement according to claim 4, wherein said tilt angle (cc1) is approximately 45°.P10519SEPC2026-01-20176. A planer arrangement according to any one of the preceding claims, wherein each mounting seat (7) is arranged so that the corresponding side cutting element (5) is arranged with a side clearance angle (a2) which is defined as an angle of rotation of the side cutting element (5) in its position in the mounting seat (5) of the planer arrangement (1 ).

7. A planer arrangement according to claim 6, wherein said side clearance angle (a.2) is generally within the interval 0-10°.

8. A planer arrangement according to claim 7, wherein said side clearance angle (a.2) is approximately 2°.

9. A planer arrangement according to any one of the preceding claims, wherein each mounting seat (7) is arranged so that the corresponding side cutting element (5) is arranged with a rear clearance angle (a3) which is defined as the deviation of the side cutting element (5) between its front cutting edge and its rear edge (5d).

10. A planer arrangement according to claim 9, wherein said rear clearance angle (a3) is of a magnitude which depends on the outer diameter of the planer head sections (1a, 1b, 1c) and which is calculated according to:minimum, the diameter / 1000 x 1maximum, the diameter / 1000 x 5.

11. A planer arrangement according to claim 10, wherein said rear clearance angle (<x3) is of a magnitude as calculated according to:the diameter / 1000 x 1.45.

12. A planer arrangement according to any one of the preceding claims, wherein said side cutting element (5) is releasably fastenable and pivotable between fourP10519SEPC2026-01-2018different rotational positions, and that said side cutting element (5) has a front cutting edge (5a, 5b, 5c, 5d) for each of said positions.

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