FI116045B - Pyörösahapää - Google Patents

Description

116045

Circular saw head.- Cirkelsagshuvud

The invention relates to a circular saw head according to the preamble of claim 1.

In this type of circular saw hub, a saw-milling cutter with a milling blade surrounding the rotary axis of the respective saw blade mills the longitudinal edge of the peripheral board separated by the saw blade from the wood core 5. In addition, the cutter allows the saw blade to penetrate deeper into the tree trunk, if necessary, using a conventional, non-milling attachment flange, for example to a depth greater than the radius of the saw blade.

The circular saw hubs according to the preamble of claim 1 are known from DE 35 36 983 A1.

In the known structures, a total of two saw blades are arranged, each saw blade having its own cutter, which only interacts with this saw blade. The milling cutter for the only second saw blade between the machine frame and the outer saw blade forms an open cavity towards it, with the other saw blade end-mounted by a central hole so large that the outer saw blade can be pulled inwardly to a smaller space between the saw blades. space to increase the distance between saw blades. A cage-like cutter has a flange with a sliding bearing; . ·. 20 to the shaft of the outer saw blade.

Providing a separate cutter for each of the saw blades, the milling operation of which is done in the manner of a cage, provides a structure which requires considerable manufacturing costs. Despite the fact that a cage-like cutter has •: '; radial openings, such that no reliable external guarantee can be guaranteed; The 25 man saw blade cutter and the other saw blade cage cutter would catch any wood chips that would prevent the cutter from adjusting.

• I

It is an object of the invention to provide a circular saw blade according to the preamble of claim 1, which is distinguished from the known circular saw blade by a simpler and. . . thanks in particular to the lower cost construction, which ensures that there is no wood chips between the parts moving relative to one another, which could interfere with adjustment. In addition, the design principle should also allow for the use of more than two circular saw blades with mills, if necessary.

2 116045

The above task is solved by the features mentioned in claim 1.

The circular saw head of the invention requires only one cutter whose cutter blades extend from the outer saw blade to the machine frame at a distance at least equal to the maximum nominal total thickness of the cut-off product, usually peripheral boards, separated from the tree trunk by the saw blade. The second saw blades are end-mounted to simple plate flanges, which differ from conventional plate flanges only by being provided with openings extending in the axis of rotation, and these simple plate flanges can be manufactured at a substantially lower manufacturing cost than the milling cutter. The cutter also has corresponding openings so that the respective mounting flange and the cutter can engage with each other in the direction of the axis of rotation of the saw blades. The other saw blades are also provided with openings at the points where the material between their milling openings is opposed to milling so that there is no obstacle in pushing and pulling the flanges together.

15 The openings in the cutter and flange can without problem be shaped radially outwardly fully open, so that the chips cannot get caught between the cutter and the flange.

The dependent claims relate to preferred embodiments of the circular saw head of claim 1.

The invention will now be explained in more detail by means of a drawing in two direct examples. In the drawing: »II (:: ': Fig. 1 is a longitudinal sectional view of the first embodiment of a circular saw:' · ': taken along line I -1 of Figures 2 and 3;] · ·;' Fig. 2 is a cross-sectional view of Fig. .:: 25 perpendicular to the axis of rotation along line II - II in Figure 1; Figure 3 shows a circular saw blade according to Figures 1 and 2 in cross section taken along line III - III in Figure 1; Figure 4 shows another embodiment of a circular saw blade; Fig. 5 is a cross-sectional view taken along the line V-V in Fig. 4, taken along a line perpendicular to the axis of rotation; Fig. 6 is a cross-sectional view of the circular saw blade of Figures 4 and 5 taken perpendicular to the axis of rotation Fig. 4 is a cross-sectional view taken along the line of rotation VII-VII in Fig. 4; Fig. 8 is a side elevational view of the embodiment of Figs. 4-7; Fig. 9 shows a third embodiment of a circular saw blade in a similar central longitudinal section as in Figures 1 and 4; and Fig. 10 is a front view of a double axis circular saw machine having circular saw heads according to the embodiment of Figs.

The circular saw head of Figs. 1-3 has a machine frame 1 on which the shaft 2 10 of the saw is rotatably but fixedly axially attached to the shaft at the right end of Fig. 1 for the viewer. The milling cutter 3 has three milling blades 3a arranged at right angles to the periphery of the machine and a securing flange 3b for the outer saw blade 4a, which in turn is fixed to the cutter 15 so that no part of the mill towards the wood beyond the level of the saw blade.

The saw shaft 2 has a sliding bearing flange 5 provided with through holes 5a which extend a predetermined distance in the direction of the saw axis 2, as best seen in Figure 3. The cutter 3 is also provided with corresponding openings 20 3c. The openings 3c in the cutter 3 and the openings 5a in the flange 5 are at least as wide in the circumferential direction as the cutter portion 3d and counterparts for insertion into the opening. ; 2: part 5b of the mounting flange 5. At the end, the fixing flange 5 is secured; by a second saw blade 4b provided at the peripheral region of the milling section 3d. * * *, interlocked with openings 14b which are so high in the radial direction that the milling parts 3d between the cutter openings 25, 3c and having the cutter blade 3a can pass unobstructed * t t '!!. 'Through the saw blade 4b into the openings 5a of the mounting flange 5.

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Due to the structure described above, the saw blade 4b shown in Fig. 1 can be moved:; so that on the side of the second saw blade 4b facing the machine body 1, the cutter 4 '. The 30 milling blades 3a extend along the axis of the saw by a distance '' depending on the dimensions of the milling mill 3. These dimensions of the cutter 3 are selected so that the cutter extends at least flatly; · By means of a router, which is pre-assembled in advance, with circular saw blades 4a, 4b •; · *! in parallel to the laterally trimmed tree trunk H by means of a saw blade; over the maximum nominal thickness of the perforated timber, whereby by moving the clamping flange 35 5 and the milling cutter 3 to one another, the perforated saw blade 4b can be slit within a predetermined maximum nominal thickness of 116045 using another saw blade 4b and On the other hand, it is also possible for the second saw blade 4b with its retaining flanges 5 to be completely withdrawn from the cutter 3, whereby only a single peripheral board or a single perforated grid is separated to a maximum thickness corresponding to the width measured in the axis 2 of the saw.

The clamping flange 5 can be conditionally moved along the axis 2 of the saw by means of the adjusting device 6 to a position giving a desired distance between the saw blades 4a and 4b. In the exemplary embodiment, the adjusting device 6 is formed externally on the mounting flange 5 by a rotatably adjusting ring 6a fixedly mounted in the direction of the saw axis 2 and having a radially outwardly extending connecting member 6b having a drive rod 6c extending into the saw bar. and wherein it can be moved forward and backward in the direction of one of the double arrow to raise the image of the positioning of the actuator.

The shaft 2 of the saw is driven in a suitable manner, for example by means of a belt drive 9.

The mounting flange 5 is suitably secured, for example by a keyway joint, in a circumferential position where its protruding portion 5b is always closely aligned with the complementary openings 3c of the cutter 3, whereby also the angle position of the cutter is fixed relative to the saw axis 2.

The embodiment according to Figures 4-8 differs from the embodiment of Figures 1-3 in that two other saw blades are provided instead of only one:. ·. saw blade 4b 'and 4c'. Where the embodiments correspond to each other is | 4-8 the same reference numerals are used for the same parts, except for the apostrophe. with equipment.

J <t>! 1-3, the cutter 3 'extends from the tree trunk i, *'; H over the maximum nominal thickness of the peripheral timber to be separated by a circular saw, '*': and its periphery is provided with equally spaced outwardly open openings 3c 'which are deeper than in the embodiment of Figures 1-3. Middle saw blade 4c ':. *. is fastened to the mounting flange 8 'which is a hollow elongated towards the machine frame 1'. '' 30 as a loose shaft 8a ', wherein this shaft 8a' is rotatably but still fixedly axially mounted on the machine body 1 '. The axis 2 '' of the outer saw blade 4a 'may be displaced longitudinally in this cavity axis 8a', but it is nevertheless rotatable with respect to it. The cavity shaft 8a 'has a mounting flange slidably mounted in the device 5 of Figs. 1-3 having a second saw blade 4b at the end facing the body 1' of the machine. This flange 5 'and its saw blade 4b' are capable of engaging the cutter 3 'in the same manner as in the embodiment of Figs. 1-3. In addition, the mounting flange 5 'is also provided with openings 5c' extending radially outwardly in the direction of the axis 2 'of the saw, into which the cutter 3' can be moved 3d 'between its openings 3c', and the protruding parts 8b 'of the flange 8' the cutter 3 'into the openings 3c'. Furthermore, here, in addition to the saw blade 4b ', the second saw blade 4c' is adjustable within the working width of the cutter 3 '5, whereby the longitudinal edge of the cutter blade 3a' mills towards the utility board or (up to three) separated edged lumber.

Instead of the shaft 2 'of the saw, the hollow shaft 8a' is rotatably driven by the actuator 9 '.

In the embodiment of Figures 4-8, positioning the saw blades 4a 'and 4b' with respect to the central saw blade 4c 'is accomplished by means of an unrepresented actuator for moving the drive rod 6c' and the saw axis 2 'with the double arrows 7' and 10, respectively. 1-3 in the same manner as in the embodiment of Figures 1-3.

Fig. 9 is a longitudinal sectional view similar to Figs. 1-4 of another preferred embodiment of a circular saw head having three saw blades 4a ", 4b" 4c "which are individually adjustable in a common cutter 3" region.

The embodiment according to Fig. 9 differs from the embodiment 20 according to Figs 4-9 in that instead of the hollow shaft mounted on the machine frame, the plate flange 8 "is extended by a longitudinally displaceable but <RTIgt; the "blade flange 5" of the second saw blade 4b: * is rotatably arranged but movable in the axial direction. The individual displacement of the disk flanges 5 "•, · '· and 8" relative to each other and the outer saw blade 4a "to the shaft:"': 25 in 2 "corresponds to the actuator 6c" and 6d "and not shown | ; 1-3 as explained in connection with the embodiment of Figures 1-3 with respect to the plate flange 5.

The circular saw blade according to the invention can be provided, for example, with double-axis circular saws, in which two saw blades are arranged on each side of the wood H, 30, to a certain extent and in the feed direction of the wood. rarely and with overlapping cutting depths. To pyörösahapäät could be set differently, 'tree trunks with varying diameter H to the machine body 1 by the double arrow drawn keroidaan 11 movably in the direction of the machine base. Fig. 10 schematically shows a double axis rotary sawing machine with a feeder, 4 35 12, from above showing on both sides an E-trimmed wood frame H with a smaller diameter per viewer of Fig. 10. The circular saw blades shown in Fig. 9 correspond to the embodiment of Figs. 1 to 3 and can be sawed on both sides while milling along two longitudinal edges B as shown in Fig. 10.

After the first sting, the circular saw heads of the machine of Fig. 10 can be adjusted for the next insertion of the wood H, for which the wood must first be rotated 90 degrees, to separate the extruded material. For sawing the actual article, the second saw blades 4b (or 4b ', 4c' when using circular saw heads according to Figures 4 -8) with fastening flanges 5 (or 5 'and 8') can be completely withdrawn from the lumber area if necessary.

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Claims (5)

7 116045 A circular saw blade for circular saws for separating a discontinuous material from a tree trunk (H) having at least two concentric circular saw blades (4a, 4b; 4a ', 4b', 4c ', 4a ", 4a", 4b ", 4b"; 4c ") having a milling cutter (3; 3 '; 3") on the side away from the tree trunk (H), circumferentially of the milling cutter (3a; 3a'; 3a "), whereby the outer saw blade (4a; 4a ') closest to the wood frame (H) ; 4a ") milling cutter (3; 3 '; 3") together with the saw blade is rigidly attached to the 10 saw shafts (2; 2'; 2 ") mounted on the machine frame (1; 1 '; 1"), whereby the saw blades (4a) , 4b; 4a ', 4b', 4c '; 4a ", 4b", 4c ") are controllably displaceable with respect to each other and to the outer saw blade (4a; 4a'; 4a") to vary the distance between the saw blades, characterized in that the outer saw blade The cutter (4a; 4a '; 4a ") also belongs to another saw blade (4b; 4b', 4c '; 4b", 4c ") for which: (a) the milling cutter (3; 3 '; 3 ") extends beyond the maximum nominal nominal thickness of the discriminating material; and b) plate flanges (5; 5 ', 8'; 5 ", 8") each supporting the second saw blade (4b; 4b ', 4c'; 4b ", 4c") and slidably axially surrounding the outer saw blade (4a; 4a '; 4a ") shaft (2; 2'; 2"), milling cutter (3; 3 '; 3 ") and other saw blades (4b; 4b', 4c '; 4b", 4c ") are provided with openings ( 5a, 14b, 3c; 5c ', 3c', 14c ', 14b', 8c ') shaped such that the flanges (5; 5', 8 '; 5 ", · * <· · 8") and the milling cutter (3; 3 '; 3 ") in the direction of the axis of rotation (RA) may engage * ··'. * and that the other saw blades (4b; 4b ', 4c'; 4b", 4c ") may move; cutter (3; 3 '; 3 ") in the axial working area Circular saw blade according to claim 1, characterized in that a single second saw blade (4b) is provided, that the shaft (2) of the outer saw blade (4a) is fixed axially to the machine body (1) of the circular saw blade, and; - that the flange plate (5) of the second saw blade (4b) is mounted on a shaft (2) of the outer saw blade (4a), which can be displaced guided along it. Circular saw blade according to Claim 1, characterized in that two second saw blades (4b ', 4c') are arranged so that the second saw blade (4c1) adjacent to the outer saw blade (4a ') is fixed to a plate flange (8') , the hollow shaft (8a ') mounted on the body (ään) of the circular saw machine slidably surrounds the shaft (2') of the outer saw blade (4a ') so that the other (4b') of each of the second saw blades (4b ') is slidably bearing 8a '), and that the shaft (2') of the outer saw blade (4a '), the hollow shaft (8a') and the plate flange (5 ') of the second saw blade (4b') are controllably displaceable with respect to one another. 5 A circular saw blade according to claim 3, characterized in that the hollow shaft (8a ') is fixedly fixed to the machine frame (f) in the axial direction. A circular saw blade according to claim 1, characterized in that two other saw blades (4b ", 4c") are tracked, that the outer saw blade (4a ") is axially fixed to the machine frame (1") and the outer saw blade (4a "). ) an adjacent second saw blade (4c ") is fixed to a plate flange (8") having an extending sleeve (8a ") mounted on the shaft (2") of the outer saw blade (4a ") slidably surrounding the axis (2") of the outer saw blade (4a "). , that the sleeve (8a ") and 15 of each of the second saw blades (4b", 4c ") of the other (4b") plate flange (5 ") are controllably movable (6c", 6d ") relative to each other and the axis of the outer saw blade (4a") (2 ") in relation. Iii * · ♦ I · t ·« · I • · # »I • 1 · *« 1 "*» 9 116045