JP2006044068A - Guide fence and cutter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To simply cut even a wide material to be cut exceeding a usual cuttable range without taking labor. <P>SOLUTION: The respective guide parts 20 provided to the left and right of a guide fence 8 are constituted so that the guide surface of the front of each of them is formed so as to be up and down divided into the first guide surface 23 formed only to the upper half of each of the guide parts 20 over the total length thereof and the second guide surface 24 retreating from the first guide surface 23 by a predetermined distance to be formed to the lower half of each of the guide parts 20 and parallel to the first guide surface 23. A sub-fence 26 is detachbly inserted in the lower half space 25 of each of the guide parts 20. Therefore, the material to be cut within the usual cuttable range is positioned using the second guide surface 24 of the guide fence 8 and the sub-guide surface 34 of the sub-fence 26 in a state that the sub-fence 26 is mounted and the material to be cut exceeding the usual cuttable range can be positioned by the second guide surface 24 by detaching the sub-fence 26. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a cutting machine that supports a main body having a saw blade that is driven to rotate on a table so as to be vertically movable, and lowers the main body to cut a workpiece to be cut positioned on the table by the saw blade, and its cutting In a machine, the present invention relates to a guide fence used for positioning a material to be cut on a table.

For example, a flip over saw, which is an example of a cutting machine, supports a table horizontally on a quadrangular base so that it can be turned 180 ° with its intermediate part as a fulcrum, and can be fixed on either side. A material to be cut placed on the table is supported at a first rotational position of the table with a main body provided with a saw blade that is rotationally driven by a motor on one side of the table so as to be movable up and down. On the other hand, it can be used as a miter saw (desk circular saw) that lowers the main body and cuts it. On the table, a guide fence is installed in the left-right direction for positioning the material to be cut against the front guide surface.
On the other hand, if the main body is fixed on the table at the bottom dead center where the saw blade penetrates the table and protrudes downward, and if the table is in the second rotational position where the main body is in that state, it protrudes above the table. It becomes possible to use as a table saw that slides the material to be cut with respect to the saw blade.

  In such a flip over saw, when the main body is lowered to the bottom dead center in the miter saw state, the saw blade penetrates the table and protrudes downward. The penetration length is within the cuttable range. Therefore, in order to be able to cut even a wide cut material exceeding the cuttable range, for example, as disclosed in Patent Document 1, a movable fence (sub-frame) that can support the cut material on the upper and side surfaces of the guide fence is provided. A technique is adopted in which a large-diameter portion of a saw blade can be cut by attaching a fence) in a detachable manner and setting a wide material to be cut above the movable fence.

Japanese Utility Model Publication No. 5-20481

  However, since this movable fence is attached to the guide fence with bolts, a tool is required for attaching / detaching the movable fence and adjusting the position, which is not convenient. In particular, when the material to be cut that can be cut within the normal cuttable range and the material to be cut that exceeds this range are cut alternately, it takes time to attach and detach the movable fence itself, resulting in poor workability. .

  Accordingly, the inventions of claims 1, 3 and 4 provide a guide fence and a cutting machine that can be easily cut without extra effort even with a material to be cut that cannot be cut within a normal cuttable range, and that are excellent in usability. It is intended.

In order to achieve the above-mentioned object, the invention according to claim 1 is the guide fence invention, wherein the guide surface is located at a position where the upper portion of the first guide surface and the first guide surface are retracted by a predetermined distance. A sub-guide surface that is formed on a lower portion of the second guide surface parallel to the first guide surface and is located on the extended surface of the first guide surface in front of the second guide surface. The sub-fence provided for is detachably mounted.
In addition to the object of the first aspect, the second aspect of the invention provides the subfence with a mounting hole formed in the second guide surface in order to make the attachment / detachment of the subfence easier and improve the workability. Provided with a connecting pin consisting of a small diameter portion that can be inserted and a large diameter portion that contacts the second guide surface and positions the sub guide surface in a state where the small diameter portion is inserted into the mounting hole. The structure is such that an elastic ring that supports the connecting pin is mounted on the table of the cutting machine so that the height of the small diameter portion matches the mounting hole.

In order to achieve the above object, the invention according to claim 3 is the invention of the guide fence, the guide surface is provided only in the upper part, and a space whose front surface is opened in the lower part is formed. A sub-fence with a sub-guide surface on the front surface can be arbitrarily selected between an advanced position where the sub-guide surface is positioned on the extended surface of the guide surface and a retracted position where the sub-guide surface is parallel to the guide surface and separated by a predetermined distance. It is characterized in that it can be moved.
In order to achieve the above object, the invention described in claim 4 is a cutting machine that supports a main body having a saw blade that is rotationally driven so as to be movable up and down on a table. The guide fence according to any one of claims 1 to 3 is mounted on the table.

According to the first, third, and fourth aspects of the present invention, even a wide material to be cut that cannot be cut at once by the upper guide surface of the guide fence, the lower second guide surface or the subfence sub-guide of the subfence that has been retracted. The surface can be easily cut and the usability is improved. In addition, by using the subfence, it is possible to secure the width of the guide surface used for normal cutting of the material to be cut, and to accidentally enter the material to be cut by opening the space below the first guide surface. Problems such as intrusion of cutting waste can be eliminated. In particular, according to the third aspect of the present invention, since the sub fence is always attached to the guide fence, the trouble of attaching and detaching the sub fence is completely eliminated, and the possibility of losing the sub fence does not occur.
According to the second aspect of the invention, in addition to the effect of the first aspect, the sub-fence can be attached to and detached from the guide fence by a simple insertion / removal operation. Is simplified and the workability is improved.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
<< Form 1 >>
FIG. 1 is an overall view showing a flip over saw as an example of a cutting machine, FIG. 2 is a plan view of the flip over saw, and a flip over saw 1 is provided on a base 2 which is a flat rectangular base and an upper portion of the base 2. It consists of a table 3 and a saw blade unit 4 provided on the table 3. The table 3 is supported so that it can be turned 180 ° around the rotary shafts 5 and 5 in the left-right direction (the right side in FIGS. 1 and 2 is the front), and the lock lever 6 provided on the base 2 It can be fixed in a horizontal state regardless of which of the two surfaces is up. In addition, a circular turntable 7 is provided on the table 3 so as to be horizontally rotatable, and a guide fence 8 is installed in the left-right direction so as to cross over the turntable 7.

  The saw blade unit 4 includes a support arm 9 erected on the rear side of the turntable 7 and a main body 11 supported by a support shaft 10 at the upper end of the support arm 9 so as to be movable up and down. A motor 13 and a handle 14 are provided on the left side of the blade cover 12, and a disk-like saw blade 15 that is rotationally driven by the motor 13 is provided in the blade cover 12. The main body 11 is urged to the top dead center of FIG. 1 by a torsion spring (not shown) provided on the support shaft 10. Is lowered to a bottom dead center penetrating a slit (not shown) provided at the center of the turntable 7, and the workpiece to be cut on the turntable 7 can be cut by the rotating saw blade 15. That is, it can be used as a miter saw. A safety cover 16 is located at the top dead center of the main body 11 so as to cover the saw blade 15 and rotates as the main body 11 descends to expose the saw blade 15.

Further, the support arm 9 can be tilted to the right together with the main body 11 on the turntable 7 and can be given a vertical angle to the saw blade 15 by being fixed by a lever 17 at an arbitrary tilt position. It has become. By tilting the main body 11, the material to be cut on the turntable 7 can be cut obliquely. In addition, the turntable 7 can rotate horizontally together with the main body 11 by grasping the handle 14 and turning. By selecting the horizontal rotation angle of the turntable 7, it is possible to cut the saw blade 15 at a right angle perpendicular to the guide fence 8 and to cut at an angle inclined in the horizontal direction therefrom.
On the other hand, the main body 11 can be fixed at the bottom dead center by a fixing mechanism 18 provided between the support arm 9 and the main body 11, and if the table 3 is inverted in this fixed state, only the saw blade 15 is obtained. Can be used as a table saw for cutting by sliding the material to be cut on the table 3.

  As shown in FIGS. 3 and 4, the guide fence 8 includes a pair of left and right guide portions 20 and 20, and arc-shaped large and small connection frames 21 and 22 that connect the rear portions of the guide portions 20 and 20. The rotating shafts 5 and 5 are held behind the guide portions 20 and 20, and the outer connecting frame 21 is screwed and fixed to the table 3 along the outer periphery of the turntable 7 so that the guide fence 8 is Through which the table 3 is rotatably supported by the base 2. Further, as shown in FIG. 5, each guide portion 20 includes a first guide surface 23 whose front surface is perpendicular to the turntable 7 and is formed only in the upper half over the entire length, and the first guide surface. 23 is formed in the lower half by retreating a predetermined distance from the bottom 23, and is formed in a two-stage shape including the second guide surface 24 parallel to the first guide surface 23. The sub fences 26 are accommodated in the half spaces 25, respectively. The position of the second guide surface 24 is set so as to be located in a portion where the saw blade 15 penetrates on the upper surface of the turntable 7 when the main body 11 is lowered to the bottom dead center, that is, in a cuttable range. ing.

  The sub-fence 26 includes a horizontally long guide plate 27 and a pair of connection pins 28 and 28 that are connected to the back of the guide plate 27 at a predetermined interval and orthogonal to each other and can be attached to the guide fence 8. The connecting pin 28 is formed of a large diameter portion 30 connected to the guide plate 27 by a screw 29 and a small diameter portion 31 extending behind the large diameter portion 30. A spherical rubber ring 32 is externally provided. By inserting the small-diameter portion 31 of the connecting pin 28 into the mounting hole 33 having substantially the same diameter provided in the second guide surface 24 of the guide fence 8, the large-diameter portion 30 comes into contact with the second guide surface 24 and stops. In this state, the sub-guide surface 34 on the front surface of the guide plate 27 is located on the lower extension surface of the first guide surface 23. At this time, the rubber ring 32 serves as a guide for guiding the small diameter portion 31 to the mounting hole 33 by holding the connecting pin 28 at a predetermined height on the turntable 7 when the sub fence 26 is mounted. The guide plate 27 is supported on the turntable 7. Particularly, since the peripheral surface of the rubber ring 32 is a spherical surface here, even if it slides between the turntable 7, the resistance is small, and the rotation of the turntable 7 is not hindered. Reference numeral 35 denotes an O-ring that is externally attached to the small-diameter portion 31 to generate a retaining resistance when attached.

  In the flip over saw 1 configured as described above, when the flip over saw 1 is used as a miter saw at the rotational position of the table 3 in FIGS. 1 and 2, the mounted guide fence 8 is used for positioning the material to be cut. First, a material to be cut that can be cut within a normal cuttable range is used with the sub-fences 26 and 26 attached to the guide fence 8 as shown in FIGS. In this state, the first guide surface 23 of the guide portion 20 and the sub guide surface 34 of the sub fence 26 are connected to the left and right of the guide fence 8 so as to form a guide surface as a whole. When the main body 11 is lowered by being pressed so as to pass to the right and left, the saw blade 15 that is lowered between the left and right guide portions 20 and 20 can cut the workpiece W1. The same applies to inclined cutting and angle cutting.

On the other hand, in a state where the workpiece is thin and wide and is in contact with the first guide surface 23 and the sub guide surface 34, the saw blade 15 remains at the front end of the workpiece even when the main body 11 is lowered to the bottom dead center. May not be able to be cut at once. In the case of such a material to be cut, the sub fences 26 and 26 are used in a state where they are removed from the guide fence 8. As shown in FIGS. 3 and 5, this removal can be easily removed by holding each guide plate 27 and pulling it forward.
In this removed state, as shown in FIG. 7, if the end of the material to be cut W2 is inserted into the space 25 and the end is brought into contact with the second guide surface 24, the material to be cut W2 is cut by the saw blade 15. Since it falls within the possible range, it can be cut at a time by lowering the main body 11. In this case, inclined cutting and angle cutting are possible, but in the case of angle cutting, the possible cutting range in the front-rear direction is reduced by the amount of inclination of the saw blade 15 in the horizontal direction.

  When the workpiece W1 that can be cut within the normal cuttable range is cut after the thin and wide workpiece W2 is cut, the sub fences 26 and 26 are again used as the guide fence 8 as shown in FIGS. Installing. This is done by aligning the positions of the small diameter portions 31, 31 of the connecting pins 28, 28 with the mounting holes 33, 33, setting the sub fences 26, 26 in front of the guide fence 8, and pushing them back as they are. This can be done by a simple procedure of inserting into the mounting holes 33, 33. If the material to be cut has a height that can be positioned only by the first guide surface 23 of the guide portion 20, only the first guide surface 23 may be used without attaching the sub-fences 26 and 26.

As described above, according to the flip over saw 1 and the guide fence 8 of the first aspect, the guide surface of the guide fence 8 is retracted by a predetermined distance from the first guide surface 23 in the upper portion and the first guide surface 23. In this case, the second guide surface 24 is formed so as to be divided vertically into the lower second guide surface 24 parallel to the first guide surface 23, so that the second guide can be formed even for a wide material to be cut that cannot be cut at once by the first guide surface 23. The surface 24 can be easily cut and the usability is improved.
Further, the sub-fence 26 having the front surface of the sub-guide surface 34 positioned on the extended surface of the first guide surface 23 in the mounted state is detachably mounted in front of the second guide surface 24, so The width of the guide surface used for cutting the cutting material can be secured, and problems such as accidental entry of the material to be cut and entry of cutting waste due to opening the space 25 below the first guide surface 23 are eliminated. It becomes possible.

Further, the sub-fence 26 is in contact with the second guide surface 24 in a state where the sub-fence 26 is inserted into the mounting hole 33 of the second guide surface 24 and the small-diameter portion 31 is inserted into the mounting hole 33. It is assumed that a connecting pin 28 including a large-diameter portion 30 for positioning the connecting pin 28 is provided, and the connecting pin 28 is supported on the large-diameter portion 30 so that the height of the small-diameter portion 31 matches the mounting hole 33 on the turntable 7. Since the rubber ring 32 is configured as an exterior, the sub fence 26 can be attached to and detached from the guide fence 8 by a simple insertion / removal operation. Therefore, no tools are required, the labor involved in using the sub fence 26 is simplified, and workability is improved.
In particular, since the peripheral surface of the rubber ring 32 is a spherical surface, even if the rubber ring 32 slides during the rotation of the turntable 7, the turntable 7 does not cause resistance or catching, and the turntable 7 can be rotated well. It can be maintained.

In addition, the ratio of the vertical width of the first guide surface and the second guide surface is not limited to half each, and one of the vertical widths may be larger than the other, and the same ratio is not made over the entire length. In each guide part, the ratio of the vertical width between the first guide surface and the second guide surface may be changed. Therefore, the shape of the guide plate of the subfence is also determined according to this ratio.
In addition, the sub-fence may be made of a synthetic resin as an elastic ring, and the shape is not limited to a spherical surface, and may be a cylinder or a prism. Of course, the present invention is not limited to such an insertion structure of the connection pin, but instead of the connection pin, a plate-like connection plate is provided on the guide plate, and the connection plate is inserted into a horizontally long slit provided on the second guide surface. But it doesn't matter. In addition, a structure is also conceivable in which a screw is rotatably coupled to the guide plate and screwed into a screw hole formed in the second guide surface. In this case, it is desirable that the screw is a knob screw that is immersed in the front surface of the sub guide surface.

<< Form 2 >>
And in the said form 1, although a subfence is detachable with respect to a guide fence, you may use a subfence with the attachment state to a guide fence. FIG. 8 shows an example thereof, and the structure of the flip over saw 1 is the same as that of the first embodiment, and therefore, a duplicate description will be omitted and only the guide fence will be described.
As shown in FIG. 4A, the guide fence 40 is in the above-described form in that it has a two-stage shape in which a space 43 having an open front surface is formed in a lower part of a guide part 41 that forms a guide surface 42 in an upper part. The sub fence 44 is mounted so as to be movable back and forth within the space 43. The sub fence 44 has a guide rod 48 connected to a horizontally long guide plate 45 having a front surface serving as a sub guide surface 46 by screws 47 in an orthogonal shape. The guide rod 48 is formed on the guide portion 41 in the front-rear direction. It is possible to move in the axial direction through the attached mounting hole 49. Reference numeral 50 denotes an O-ring externally mounted on the guide rod 48.

  Here, a stopper 51 protrudes from the lower end of the guide surface 42 in the guide portion 41, and the sub-fence 44 has the sub-guide surface 46 in the forward position where the guide plate 45 abuts against the stopper 51. In the retracted position where the guide plate 45 abuts against the guide portion 41 in the space 43, the sub guide surface 46 is parallel to the guide surface 42 as shown in FIG. It is designed to leave a predetermined distance in the state. Reference numeral 52 denotes a rubber ring that is externally mounted on a ring-shaped convex portion 53 projecting from the guide plate 45 for connecting the guide rod 48 and maintains the guide plate 45 at a predetermined height.

When the guide fence 40 formed as described above is mounted on the flip over saw 1 according to the first aspect, in a material to be cut that can be cut within a normal cuttable range, as shown in FIG. Extruding and moving the sub fences 44 and 44 to the advanced position where they abut against the stopper 51 as shown in FIG. 4A, the guide surface 42 and the sub guide surface 46 of the sub fence 44 are connected to each other on the left and right sides of the guide fence 40. To form a guide surface as a whole. Therefore, when the workpiece is positioned and the main body 11 is lowered, the workpiece can be cut by the saw blade 15 that descends between the left and right guide portions 41 and 41.
On the other hand, in the case of a thin and wide material to be cut, the sub-fences 44 and 44 are respectively pushed into the space 43 from the front as shown in FIG. 9A, and the rubber ring 52 and the convex portion 53 are shown as shown in FIG. Is used in a retracted position where it contacts the guide portion 41. In this state, if the end portion of the material to be cut is inserted into the space 43 and the end portion is brought into contact with the sub guide surface 46, the body 11 can be cut at a time by lowering.

As described above, also in the guide fence 40 and the flip over saw 1 according to the second embodiment, the guide surface 42 is provided only in the upper portion, and the space 43 having the front surface opened in the lower portion is formed. The sub-fence 44 having the surface 46 on the front surface includes an advance position in which the sub-guide surface 46 is positioned on the extended surface of the guide surface 42 and a retract position in which the sub-guide surface 46 is separated from the guide surface 42 by a predetermined distance. By providing an arbitrarily movable operation between them, even a wide material to be cut that cannot be cut at a time by the guide surface 42 can be easily cut using the sub guide surface 46 of the retracted sub fence 44, Usability is improved.
In particular, as compared with the first embodiment, since the sub fence 44 is always attached to the guide fence 40, there is an advantage that the trouble of detaching the sub fence 44 is completely eliminated and the possibility of losing the sub fence 44 does not occur. .

In the second embodiment as well, the upper and lower ratios of the upper guide surface and the lower sub-fence are arbitrary, and either one may be formed wider than the other. In addition, the sub fence stopper is not limited to the one provided below the guide surface. For example, a stopper (such as a pin or a ring body) that engages the guide portion at the forward position can be provided at the rear end of the guide rod. is there.
Of course, the mounting structure of the guide fence is not limited to the guide rod, and the plate connected to the guide plate may be mounted on the guide fence so as to be movable back and forth, similarly to the modified example shown in the first embodiment.

  In addition, in common with modes 1 and 2, the structure of the flip over saw itself is not limited to the above mode, and the present invention can be applied to a structure in which the main body can be tilted to the left or right, or a structure in which tilt cutting or angle cutting cannot be performed. The present invention is applicable not only to flip over saws, but also to other cutting machines such as a tabletop circular saw machine in which the main body is provided on a turntable supported so as to be horizontally rotatable on the base. It is.

1 is an overall view of a flip over saw according to form 1. FIG. It is a top view of a flip over saw. It is a plane explanatory view of a guide fence and a sub fence. It is a front view of a guide fence. It is sectional drawing which shows the mounting structure of a subfence. It is explanatory drawing which shows the cutting state of a normal to-be-cut material. It is explanatory drawing which shows the cutting state of a wide to-be-cut material. It is sectional drawing of the guide fence of form 2, (A) shows the time of cutting of a normal to-be-cut material, and (B) cuts a wide to-be-cut material, respectively.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Flip over saw, 2 ... Base, 3 ... Table, 4 ... Saw blade unit, 7 ... Turntable, 8, 40 ... Guide fence, 9 ... Support arm, 10 ... Spindle, 11 ... Main body, 15 ... Saw blade , 20, 41... Guide portion, 23... First guide surface, 24... Second guide surface, 26 and 44 .. subfence, 27... Guide plate, 28. 35 ... O-ring.

Claims (4)

A guide fence that is mounted on the table of a cutting machine that supports a main body having a saw blade that is rotationally driven so as to be movable up and down on the table, and that has a guide surface for positioning a material to be cut on the front surface,
The guide surface is divided into a first guide surface in an upper part and a second guide surface in a lower part parallel to the first guide surface at a position retracted by a predetermined distance from the first guide surface. A guide fence comprising a sub-fence having a front surface with a sub-guide surface positioned on the extended surface of the first guide surface in a mounted state in front of the second guide surface.   A small-diameter portion that can be inserted into the mounting hole formed in the second guide surface, and a large size for positioning the sub-guide surface by contacting the second guide surface with the small-diameter portion inserted into the mounting hole. It is assumed that a connecting pin comprising a diameter portion is provided, and an elastic ring that supports the connecting pin is mounted on the large diameter portion so that the height of the small diameter portion matches the mounting hole on the table of the cutting machine. The guide fence according to claim 1. A guide fence that is mounted on the table of a cutting machine that supports a main body having a saw blade that is rotationally driven so as to be movable up and down on the table, and that has a guide surface for positioning a material to be cut on the front surface,
The guide surface is provided only in the upper part, and a space having a front surface opened in the lower part is formed. In the space, a sub fence having a sub guide surface on the front surface is formed, and the sub guide surface is an extension of the guide surface. A guide fence characterized in that it can be arbitrarily moved between a forward position positioned on a surface and a retracted position in which the sub guide surface is separated by a predetermined distance while being parallel to the guide surface. It is a cutting machine which supports the main body provided with the saw blade to rotate, and can be moved up and down on a table, and the guide fence according to any one of claims 1 to 3 is mounted on the table. Cutting machine featuring.

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