JP3102765B2 - Traveling circular saw machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a traveling circular saw for cutting a workpiece while moving a circular saw.

[0002]

2. Description of the Related Art In the case of cutting a rectangular work obliquely to its edge, the following cutting apparatus has been used. The fixed table and the movable table movable horizontally with respect to the fixed table are provided at the same height, and the fixed table is provided with a circular saw whose cutting direction is parallel to the moving direction of the movable table. Has a configuration in which a positioning member extending obliquely to the moving direction (the cutting direction of the circular saw) is provided. When the work is placed on both tables so as to cross the movement path of the circular saw and the edge of the work is aligned with the positioning member, the work is positioned obliquely with respect to the circular saw. When the movable table is moved integrally with the work while maintaining this state, the work is cut obliquely by the circular saw.

[0003]

In the above conventional method,
When cutting, the movable table had to be moved while the work was pressed against the movable table by hand.Therefore, not only may the position of the work shift during cutting, resulting in poor cutting, but also There is a problem that a large burden is imposed on the user. The present invention has been made in view of the above circumstances, and has as its object to prevent a positional shift of a work when diagonally cutting the work and to reduce a burden on an operator.

[0004]

According to a first aspect of the present invention, there is provided a working table for supporting a work, a cutting mechanism for cutting the work by rotating and moving a circular saw, and the cutting table supported by the working table. A positioning member for positioning the work with respect to the cutting mechanism; angle adjusting means for adjusting an angle of the positioning member with respect to a moving direction of the cutting mechanism; and work fixing means for fixing the work positioned by the positioning member. The angle adjusting means comprises an arcuate guide centered on a point on a cutting path by the cutting mechanism and a slider movable along the guide, and the positioning member is provided on the slider. The positioning member is attached
Guides the work along a straight line passing through the center of the arc of the id
The circular saw is inserted through the circular arc center of the guide.
Having a passage groove for passing along the positioning member.
A stopper is provided so that the corner of the
Having the features at that.

[0005]

[0006]

According to the first aspect of the present invention, after adjusting the angle of the positioning member in accordance with the cutting angle of the work, the positioning member positions the work obliquely with respect to the moving direction of the cutting mechanism. Fix to the processing table. When the cutting mechanism is moved in this state, the circular saw cuts the work obliquely. Thus, since the positioned work is fixed by the work fixing means, there is no need for the operator to press the work against the processing table, and there is no possibility that the position of the work is shifted. Further, the cutting operation is performed not by the operator moving the work but by moving the cutting mechanism with respect to the work. Thus, it is possible to prevent the work from being displaced and to reduce the burden on the operator. Also, the workpiece is the arc of the guide
State arranged in the area including the center or the area near the center of the arc
When the slider is moved in the state, the work rotates
To change the angle. When the work changes the angle
Large movement on the cutting path of the cutting mechanism
There is no need for a large space.

Further, the work is positioned by aligning the edge of the work with the positioning member and abutting the corner of the work against the stopper, and the work is cut along a straight line passing through the corner. Regardless of the positioning angle, the corner of the work can always be located on the cutting path of the cutting mechanism. Therefore, when cutting along a straight line extending radially from the corner of the work, the work can be easily positioned. it can.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is applied to a running saw for woodwork will be described below with reference to FIGS. The running saw of the present embodiment has both a parallel cutting mechanism for cutting a rectangular work parallel to its edge and a diagonal cutting mechanism for cutting a rectangular work obliquely to its edge. <Parallel Cutting Mechanism> First, the parallel cutting mechanism will be described with reference to FIGS. The processing table 10 has a rectangular shape elongated in the left-right direction and is fixed substantially horizontally to the main frame 11. The horizontal upper surface of the processing table 10 has a work supporting surface 14 for mounting a work (a plate material to be cut) W thereon. It has become. A chucking unit 20 for fixing the work W is provided behind the processing table 10 (upward in FIG. 2 and rightward in FIG. 3), and the work W fixed by the chucking unit 20 is provided in the front. A cutting unit (cutting mechanism, which is a component of the present invention) 30 for cutting is provided.

The cutting unit 30 is provided so as to be able to reciprocate right and left by a reciprocating drive mechanism 40. The details of the cutting unit 30 and the reciprocating drive mechanism 40 are shown in FIG. Two guide rails 41 are provided on the left and right of the main frame 11, and the movable frame 31 is fixed to a slider 42 that is engaged with the guide rails 41 and guided left and right. A housing 32 having upper and lower surfaces opened is fixed to the movable frame 31. A circular saw 33 for cutting and a circular saw 34 for cutting are rotatably supported in the housing 32.
Are rotationally driven by dedicated motors 35 (only one is shown in FIG. 3). The two circular saws 33 and 34 and the two motors 35 are lifted and lowered by a lifting mechanism (not shown).
The two circular saws 33 and 34 project from the work W to cut the work W. When the work W is lowered, it sinks down from the slit 13 so as not to contact the work W.

A drive chain 44 is attached to the movable frame 31 between two L-shaped end plates 43. The drive chain 44 is hung around a drive sprocket 45 and an idle sprocket 46 rotatably provided at both ends of the main frame 11. When the drive sprocket 45 is rotationally driven by the traveling motor 47 via the chain 48, The drive chain 44 is driven to travel, and the cutting unit 30 travels in the left-right direction while being guided by the guide rail 41. Slit 1
When the cutting unit 30 travels in the left-right direction with both circular saws 33, 34 protruding toward the processing table 10 through 3, the work W is cut in the left-right direction by both circular saws 33, 34.

In the left and right moving regions of the cutting unit 30, a dust collecting duct 53 having an upper surface opened is disposed, and a lower opening of the housing 32 faces the upper surface opening. Chips generated by the dust collecting duct 53 from inside the housing 32 of the cutting unit 30.
It is designed to be sucked into. A pair of guide rolls 55 are arranged on both left and right sides of the dust collection duct 53, and a cover belt 54 is interposed between the guide rolls 55.
A portion of the upper surface opening of the dust collection duct 53 other than the portion connected to the lower opening of the housing 32 is covered with a cover belt 54 to prevent a reduction in dust collection efficiency. Although not shown, an opening corresponding to the lower opening of the housing 32 is formed in a portion of the cover belt 54 corresponding to the housing 32.

On the left and right sides of the moving area of the cutting unit 30 in the main frame 11, three upper and lower guide rolls 52 are rotatably arranged, and here, a steel belt 51 corresponding to one shielding belt is provided. Is hung. The central portion of the steel belt 51 is guided by the lowermost guide roll 52 and extends in the left-right direction below the cover belt 54, and the left and right end portions are guided by the uppermost left and right guide rolls 52 so as to be processed by the processing table. The left and right ends of the housing 10 are fixed to the left and right ends of the housing 32 of the cutting unit 30. With this steel belt 51
Of the machining table 10
3, the portions located on the left and right sides of the cutting unit 30 are closed by the steel belt 51 from the back side of the processing table 10.

Next, the chucking unit 20 will be described. The chucking unit 20 is provided with a movable frame 21 movably back and forth with respect to the processing table 10 by a guide mechanism (not shown), and a plurality of (in this embodiment, nine) work fixing mechanisms 22 are provided on the movable frame 21. It is configured to be attached. The work fixing mechanism 22 is shown in detail in FIGS. A holder 28 having a substantially U shape when viewed from above is attached to the movable frame 21 so as to be integrally movable. The holder 28 includes a rear wall 28A fixed to the movable frame 21 and the rear wall 2A.
8A, a pair of side walls 28B extending forward from both left and right side edges,
28B. The front end of the side wall 28B protrudes inward, and a guide groove 28C having a constant width is provided between the two protruding portions. The holder 28 is floating with a slight gap from the work supporting surface 14 of the processing table 10.

At the upper end position on the front surface of the back wall 28A, an air cylinder 23 for a pressing member is provided with a rod 23A.
Is fixed in a posture in which it protrudes downward, and a pressing member 24 is attached to this rod 23A so as to be integrally displaceable. The holding member 24 has a long and horizontal plate shape in the front-rear direction, and has a rod 23A at its wide rear end.
Is fixed in a cantilevered state. Such a holding member 24
Moves up and down in the guide groove 28C as the rod 23A advances and retreats. The front end portion of the pressing member 24 protrudes forward from the guide groove 28C, and this protruding portion is a pressing portion 24A that protrudes slightly downward.

At the lower end position on the rear surface of the back wall 28A, an air cylinder 25 for a support member is
5A is fixed in a posture in which it projects downward, and a support member 26 is connected to the rod 25A. The support member 26 has a shape elongated in the front-rear direction as a whole, and is arranged so as to reach a lower end portion of the guide groove 28C from a lower end edge of the rear wall 28A. The lower end portion of the support member 26 is housed in the front-back direction accommodation groove 12 formed in the work support surface 14 at a position corresponding to the guide groove 28C of the processing table 10. Support member 2
6 has a bearing hole 26B penetrating in the lateral direction at a position near the front end.
A support shaft 27 is penetrated through the bearing hole 26B so as to be relatively rotatable. Further, both end portions of the support shaft 27 are formed in bearing grooves 28D, 28D formed at lower end edges of the side walls 28B, 28B.
It is housed and fixed inside. Thus, the support member 26 is supported so as to swing and displace about the support shaft 27 as a fulcrum like a seesaw.

A cylindrical coupler 29 attached to a rod 25A is engaged with a U-shaped groove (not shown) formed at the rear end of the support member 26, and a pair of upper and lower flanges 29A, 29A of the coupler 29 is engaged. Are positioned so as to sandwich the support member 26 with a gap. As a result, when the rod 25A moves forward and backward, the rear end of the support member 26 is displaced in the vertical direction in conjunction with it, so that the front end of the support member 26 is displaced in the vertical direction. The front end of the support member 26 projects forward from the guide groove 28C in a state where the support member 26 is substantially entirely accommodated in the accommodation groove 12, and the front end portion corresponds to the receiving portion corresponding to the pressing portion 24A of the pressing member 24. 26A. When the receiving portion 26A is displaced to the uppermost position, the receiving portion 26A protrudes upward from the processing table 10, and the height of the upper surface of the receiving portion 26A becomes slightly higher than the work supporting surface 14. When the receiving portion 26A is displaced to the lowermost position, the receiving portion 26A sinks and
And the height of the upper surface of the receiving portion 26 </ b> A is lower than the work supporting surface 14.

Next, the operation when the work W is cut in parallel with the front and rear end edges by the above configuration will be described. When the power switch of the apparatus is turned on, a message indicating that “origin search” should be performed is displayed on the display of the operation panel 60. Therefore, when the start operation is performed, the reciprocating drive mechanism 4
The driving motor 47 of 0 is driven, the cutting unit 30 moves to a predetermined “standby position”, and that position is set as the origin of the cutting unit 30 in the left-right coordinate system.

Next, a required cutting dimension or the like is input on the operation panel 60, the work W is supplied onto the processing table 10, and the start switch of the operation panel 60 is turned on. Then, the chucking unit 20 on the processing table 10 advances to the work W side, and each work fixing mechanism 22 holds and fixes the rear end edge of the work W. In this state, the chucking unit 20 moves to position the workpiece W at a predetermined cutting position. Then, the traveling motor 47 of the reciprocating drive mechanism 40 is normally rotated by a signal from a position control circuit (not shown), and when the cutting unit 30 reaches the right end of the predetermined moving area, the two circular saws 33 and 34 are raised by the lifting mechanism. At the same time, the running motor 47 is rotated in the reverse direction. As a result, the cutting unit 30 moves from right to left with a part of the circular saws 33, 34 protruding from the slit 13 of the processing table 10, and each of the circular saws 33, 34 encounters the workpiece W. From there, the cutting of the work W is started. Then, when the circular saw for cutting 34 is positioned to the left of the work W, the cutting of the work W is completed.

Thereafter, the cutting unit 30 is moved to the "standby position".
At the same time, the work fixing mechanism releases the work W, the chucking unit 20 moves back to the predetermined standby position, and the released work W is collected. From the above, 1
The cutting cycle of the work W ends. The work holding operation and the work releasing operation of the work fixing mechanism 22 in the above cutting process are as follows. When the chucking unit 20 is moved from the standby position to the work fixing position, the rod 2 of the air cylinder 23 for the holding member is required.
3A was pulled up to displace the holding member 24 to the upper position, and the rod 25A of the support member air cylinder 25 was pulled up to sink the receiving portion 26A at the front end of the support member 26 from the work support surface 14. Keep it in a state. Then, when the chucking unit 20 reaches the predetermined work fixing position, the pressing portion 24A at the front end of the holding member 24 and the receiving portion 26A are sandwiched from above and below without contacting the edge of the work W. Will be located.

Thereafter, the air cylinder 23 for the holding member and the air cylinder 25 for the supporting member operate to operate both rods 2.
3A and 25A project downward. Then, the support member 26
Is tilted so that the receiving portion 26A advances above the work supporting surface 14 so as to abut against and support the lower surface of the work W from below, and the pressing portion 24A abuts on the upper surface of the work W and raises it. The work W is sandwiched vertically by the pressing portion 24A and the receiving portion 26A, whereby the work W is fixed to the work fixing mechanism 22.

In this state, the edge of the work W is slightly lifted from the processing table 10 by the support member 26. Therefore, when the chucking unit 20 moves to the cutting position in a state where the work W is fixed, there is no possibility that the edge of the work W is rubbed against the work support surface 14 and is damaged. When the work fixing mechanism 22 releases the work W after the cutting is completed, the air cylinder 23 for the holding member and the air cylinder 25 for the support member operate to raise both rods 23A, 25A upward. . Then, the pressing member 24 separates from the work W and retreats upward, and the receiving portion 26A of the support member 26 is displaced downward. At this time, while the receiving portion 26A is above the work supporting surface 14, the work W is supported by the receiving portion 26A. When the receiving portion 26A is at the same height as the work supporting surface 14, the lower surface of the work W is supported by the work. Abuts surface 14; After that, the receiving portion 26A receives the work W
The workpiece W is separated from the lower surface and sinks below the work support surface 14, and the work W remains mounted on the work support surface 14 during this time. Therefore, when the chucking unit 20 returns to the standby position after releasing the work W, the work W
There is no danger that the edge portion will be dragged and moved by the chucking unit 20 while riding on the support member 26.

According to the work fixing mechanism 22, since the receiving portion 26A is displaced between the position protruding from the processing table 10 and the position sinking, the work W is fixed without being pressed against the processing table 10. The support member 26 can be reliably separated from the lower surface of the work W. This prevents the fixed work W from being rubbed against the processing table 10 and being damaged, and also prevents the released work W from being dragged by the work fixing mechanism 22. Further, in the work fixing mechanism 22, since the support member air cylinder 25 is provided above the processing table 10 like the holding member air cylinder 23, the vertical dimension of the work fixing mechanism 22 is small. Further, since the support member 26 is supported by the support shaft 27 so as to be tilted and displaced in a seesaw shape, the support member 26 is compared with the case of cantilever support.
The posture is stable. Therefore, there is no possibility that the receiving portion 26A at the front end sinks below the work supporting surface 14 due to the bending of the support member 26 at the time of fixing the work, and the contact of the work W with the processing table 10 can be reliably avoided. it can. In addition, since the distance between the support shaft 27 and the receiving portion 26A of the support member 26 is set shorter than the distance between the support shaft 27 and the connection portion with the support member air cylinder 25, the support member 26 is a pressing member. 24 can exert a strong supporting force against the pressing force.

<Diagonal Cutting Mechanism> Next, a diagonal cutting mechanism for dicing the work W diagonally with respect to its edge will be described with reference to FIGS. The diagonal cutting mechanism of the present embodiment has a structure suitable for a case where a step board of a turning staircase in a building is obtained by cutting a single rectangular plate (work W). On the front side (lower side in FIG. 2) of the linear cutting path S (shown in FIGS. 2, 10, and 14) by the cutting unit 30, a rail is connected to the right end of the processing table 10 in FIG. A support table 71 is provided. On the upper surface of the rail support table 71, a pair of guide rails (guides, which are a constituent feature of the present invention) 72, which are concentric arcs centered on a point P on the cutting path S, are provided. A slider 73 having a fan-shaped plate shape is attached to the pair of arc-shaped guide rails 72 so as to be smoothly movable by fitting a slider 74 on the lower surface thereof.

On the rail support table 71, a plurality of (five in this embodiment) positioning holes 75 are formed at predetermined positions along an arc concentric with a pair of arc-shaped guide rails 72. . Each positioning hole 75 has a tapered shape whose diameter increases upward. On the other hand, the slider 73
The positioning air cylinder 76 is attached to the, and the rod 76A of the positioning air cylinder 76 passes through the through hole 77 of the slider 73 downward. Rod 7
The lower end of 6A has a tapered shape whose diameter decreases downward. When the positioning air cylinder 76 is actuated, the rod 76A advances downward and any of the positioning holes 75
, So that the slider 73 is selectively held at any one of the five positions.

An elongated plate-like positioning member 78 is fixed to the front end of the slider 73 in the clockwise direction in FIG. The front edge of the positioning member 78 in the clockwise direction in FIG. 10 is a linear guide surface 78A with which the edge of the workpiece W contacts. Positioning member 7
8 is fixed to the slider 73 with the guide surface 78A positioned and oriented in a direction and position that coincide with a straight line passing through the arc center P. Therefore, no matter where the slider 73 is located along the arc-shaped guide rail 72, the guide surface 78 is always present.
A comes to coincide with a straight line passing through the arc center P.

Further, the slider 73 is inserted into the positioning hole 75.
The rod 76A of the positioning air cylinder 76 is fitted to the cylinder and selectively positioned at five positions.
The angle between the guide surface 78A and the cutting path S is 18 °, 2
It can be set to any of 2.5 °, 30 °, 45 °, and 60 °. A pair of work-pressing air cylinders (work fixing means which is a constituent feature of the present invention) are provided at two positions on the upper surface of the positioning member 78 at the inner peripheral end and the outer peripheral end.
80 is attached via a bracket 81. The rod 80A of the work pressing air cylinder 80 protrudes downward at a position protruding outside of the positioning member 78, and the pad 82 attached to the lower end of the rod 80A presses the upper surface of the work W to press the work W. W can be fixed on the processing table 10.

Further, a stopper 83 having a wall plate shape is provided on the processing table 10 so as to pass through the arc center P and cross the cutting path S. The stopper 83 is for positioning the work W in the direction along the guide surface 78A by abutting the corner of the work W along the guide surface 78A of the positioning member 78. The stopper 83 is formed with a concave portion 83A for fitting a right-angled corner of the work W without looseness, and the corner point of the concave portion 83A coincides with the arc center P as shown in FIG. It has become. If the angle of the guide surface 78A is different, the direction of the corner of the work W changes, so the stopper 83 is provided with the concave portion 83A at each set angle of the guide surface 78A with respect to the cutting path S.
There are five kinds of exclusive ones with different shapes. Further, the circular saw 3 of the cutting unit 30 is
A passage groove 84 is formed along the cutting path S for avoiding interference with the cutting grooves 3 and 34.

An auxiliary table 8 is provided at the left end of the rail support table 71 in FIGS. 2 and 10 so as to be located on the outer peripheral side with respect to the arcuate guide rail 72 on the outer peripheral side.
5 are provided. The auxiliary table 85 has the same height as the processing table 10, and even when the guide surface 78A of the positioning member 78 is set at a large angle with respect to the cutting path S, the work W can be stably held in a wide area. It can be supported.

Next, the operation when the work W is cut by the oblique cutting mechanism having the above structure will be described. As an example of the cutting mode, a case will be described in which the work W is cut into five pieces at equal angular intervals of 18 ° around the right-angled corner. First, the rod 7 of the positioning air cylinder 76
With the 6A retracted upward, the slider 73 is moved along the arc-shaped guide rail 72 to move the rod 76A in FIG.
It corresponds to the positioning hole 75 located at the foremost end in the clockwise direction of 0 (in FIG. 10, it is hidden under the positioning air cylinder 76 and does not appear). In this state, the positioning air cylinder 76 is actuated to move the rod 76A downward and fit into the positioning hole 75. At this time, even if the center of the rod 76A and the center of the positioning hole 75 are displaced, since both are tapered, the positions are corrected and the centers of the rods 76A and the positioning holes 75 are aligned. Thereby, the direction of the positioning member 78 with respect to the cutting path S of the cutting unit 30 is determined, and the guide surface 78A is set so as to form an angle of 18 ° with the cutting path S.

In this state, the work W is supplied onto the processing table 10 and the edge of the work W is moved to the guide surface 78A.
The workpiece W is slid toward the arc center P along the guide surface 78A, and the corner of the workpiece W is
To the concave portion 83A. Thereby, the workpiece W is positioned at a predetermined position and angle with respect to the cutting path S.
Thereafter, the work pressing air cylinder 80 is operated, and the pad 82 at the lower end of the rod 80A presses the upper surface of the work W so that the work W is sandwiched between the work table 10 and the work table. Then, the work W is fixed in the movement restricted state by the friction between the pad 82 and the processing table 10.

When the cutting unit 30 is moved while the work W is positioned and fixed as described above, the work W is cut along the line passing through the corner by the circular saws 33 and 34, and the 18 ° corner is cut. Is obtained. Next, the work pressing air cylinder 80
Release of the cut piece Wa of the workpiece W by the
The cutting surface of the remnant is aligned with the guide surface 78A and the angle
The remaining corner of the work W is abutted against the recess 83A of the stopper 83 and positioned (see FIG. 14B), and the remaining piece of the work W is fixed by the work pressing air cylinder 80. Then, the remaining piece of the work W is further cut by the cutting unit 30, and a triangular cut piece W having an 18 ° corner is provided.
b is obtained. Thereafter, similarly, as shown in FIGS. 14C and 14D, the remaining pieces of the workpiece W are positioned, fixed, and cut to obtain cut pieces Wc, Wd, and We having 18 ° corners. Can be Through the above steps, the rectangular work W is cut into five pieces at equal angular intervals of 18 ° around the corners, and the five cut pieces Wa are cut.
~ We are provided as treads of the rotating stairs. In this way, when the work cut out from one work W is used as a series of treads in one turning staircase, compared with the case where the treads cut out from separate works W are combined, the construction of the turning stairs is Dimensional deviations are unlikely to occur and workability is good.

In the present embodiment, the number of cut pieces of the rectangular work W is not limited to five pieces, but four pieces, three pieces,
It is possible to cut into two pieces. When cutting into four sheets, the angle of the guide surface 78A with respect to the cutting path S is set to 2
Set to 2.5 °, set to 30 ° for 3 cards, 2
In the case of sheets, the angle may be set to 45 °. Of course, it is also possible to cut into different angles such as 30 ° and 60 °. When the cutting angle is changed, the stopper 83 is also exchanged according to the angle.

Further, it is also possible to cut the work W by positioning it at a position where the corner of the work W is separated from the stopper 83.
When the angle of the guide surface 78A with respect to the cutting path S increases, the rod 80A of the work pressing air cylinder 80 comes off the processing table 10. However, in this case, a portion of the work W close to the pressing portion by the rod 80A is supported from below by the processing table 10 and the auxiliary table 85, and the support portion of the processing table 10 and the auxiliary table 85 is an arc-shaped guide rail 7
Since the workpiece W is located on the outer peripheral side and the inner peripheral side, the workpiece W is stably fixed without floating.

As described above, according to the oblique cutting mechanism in the present embodiment, the positioned work W is fixed by the work pressing air cylinder 80. Machining table 1
There is no need to keep it at zero. In addition, when cutting, the operator does not move the work W as in the conventional case, but instead of the cutting unit 30 with respect to the fixed work W.
Is to move. Therefore, the burden on the worker is reduced.

Further, the work W is fixed not by the operator by hand but by the work pressing air cylinder 80.
Work W
Can be reliably prevented from being displaced. Further, the positioning member 78 for positioning the work W rotates around a point P on the cutting path S.
Therefore, when changing the angle of the work W, the work W is not largely displaced on the cutting path S as in the case where the work W rotates around a point away from the cutting path S, but the work W is in a narrow area. Since the posture is changed within the vehicle, a large space is not required.

Further, since a stopper 83 is provided on the cutting path S for abutting the corner of the work W, when the work W is cut along a straight line extending radially from the corner of the work W, the positioning of the work W is performed. Can be easily performed. <Other Embodiments> The present invention is not limited to the embodiments described above and illustrated in the drawings. For example, the following embodiments are also included in the technical scope of the present invention. Various changes can be made without departing from the scope of the invention.

(1) In the above embodiment, the positioning member is provided so as to rotate about one point on the cutting path S of the cutting unit. However, according to the present invention, the positioning member is centered on a point off the cutting path S. It may be provided to rotate. (2) In the above embodiment, the positioning member is rotated around one point P. However, according to the present invention, the positioning member is supported by the multi-node link and moved along a locus other than an arc. You may.

(3) The means for fixing the work positioned in the oblique cutting mechanism is not limited to the method of pressing the work on the processing table, but a slider mechanism is provided with a chuck mechanism for holding the work from above and below with a claw on the slider. The work may be held. This makes it possible to adjust the angle by moving the slider and the positioning member while holding the work. (4) A configuration in which gears are provided in a concentric arc shape on a rail support table and a pinion and a motor are provided in a slider, or a configuration in which a pinion and a motor are provided in a slider and concentric arc gears and a rail support table are provided. The slider may be moved along an arcuate guide by rotating the pinion by a motor and engaging with the gear. In this case,
Since you can stop the slider at any position,
The degree of freedom in setting the angle is improved. Further, the angle can be accurately set by detecting the number of rotations of the motor with an encoder or the like.

(5) In the above embodiment, the present invention is applied to a running saw having a parallel cutting mechanism for cutting the work obliquely to the front and rear end edges in addition to the oblique mechanism for cutting the work obliquely to the front and rear end edges. However, the present invention can be applied to a running saw having only a diagonal cutting mechanism without a parallel cutting mechanism.

[Brief description of the drawings]

FIG. 1 is a front view of a running saw showing one embodiment of the present invention.

FIG. 2 is a plan view of the same.

FIG. 3 is a side view of the same.

FIG. 4 is a perspective view of a work fixing mechanism.

FIG. 5 is a side view of the work fixing mechanism in a state where the work is released.

FIG. 6 is a side view showing a state where the work is fixed in the work fixing mechanism.

FIG. 7A is an enlarged side view of the work fixing mechanism with the work released, and FIG. 7B is an enlarged side view of the work fixing mechanism with the work fixed.

FIG. 8 is a sectional view showing a reciprocating drive mechanism.

FIG. 9 is a longitudinal sectional view of a cutting unit.

FIG. 10 is an enlarged plan view of a mechanism for diagonally cutting a workpiece.

FIG. 11 is an enlarged plan view of a stopper that abuts a corner of a work;

FIG. 12 is a cross-sectional view of a mechanism for diagonally cutting a workpiece.

FIG. 13 is a side view of a work pressing air cylinder in a mechanism for cutting a work obliquely.

FIG. 14 is a schematic plan view showing a process of diagonally cutting a work.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Processing table 30 ... Cutting unit (cutting mechanism) 34 ... Circular saw 72 ... Circular guide rail (guide) 73 ... Slider 78 ... Positioning member 80 ... Work press air cylinder (work fixing means) 83 ... Stopper 84 ... Pass Groove P ... Cutting path S ... Arc center W ... Work

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-3-274102 (JP, A) Japanese Utility Model Showa 57-157422 (JP, U) Japanese Utility Model Showa 56-88501 (JP, U) Japanese Utility Model Showa 61- 71401 (JP, U) Fully open 1987-45103 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) B27B 5/00-5/38 B27B 27/10

Claims (1)

(57) [Claims] 1. A processing table for supporting a work, a cutting mechanism for cutting the work by rotating and moving a circular saw, and a positioning for positioning the work supported on the processing table with respect to the cutting mechanism. A positioning member for adjusting an angle of the positioning member with respect to a moving direction of the cutting mechanism; and a work fixing unit for fixing the work positioned by the positioning member. An arc-shaped guide centered on one point on a cutting path by a mechanism and a slider movable along the guide, the positioning member is attached to the slider, and the positioning member is an arc of the guide. A straight line passing through the center
Is arranged to guide the workpiece along the arc center of the guide, in order to pass the circular saw
Of the workpiece along the positioning member
A traveling circular sawing machine, wherein a stopper against which a corner portion abuts is provided .