JP4063542B2 - Device for positioning a workpiece in a cutting machine - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a positioning device used for positioning a material to be cut to a cutting position in a cutting machine such as a tabletop circular saw machine provided with a base on which the material to be cut is placed.
[0002]
[Prior art]
For example, a tabletop circular saw machine has a turntable mounted on the center of a base having a protruding part on the left and right so that the turntable can be rotated at the same height as the protruding part, and an arm is erected on the rear part of the turntable. A main body provided with a saw blade rotating in the front-rear direction at a front end of the motor is pivotally supported so as to move up and down. In addition, a guide fence having a guide surface on the front surface is erected between the protruding parts of the base in the left-right direction, and when cutting, the material to be cut can be pressed against the guide surface of the guide fence and fixed. However, in particular, the guide fence is provided with a vertical vice device or the like that can press the material to be cut from above by screw feeding in order to stabilize the material to be cut.
[0003]
[Problems to be solved by the invention]
By the way, when the material to be cut is a long material that protrudes in the left-right direction beyond the width of the base, it is difficult to accurately align the black line of the material to be cut with the cutting position by the saw blade, and it takes time to position the material to be cut. This is time consuming and causes a decrease in workability. For such a long material, a rod is connected to the side surface of the overhanging portion of the base, or a holder plate having an upper surface that is the same height as the upper surface of the base is provided on the rod. Although there are cases where scale members are supported, these are merely structures for placing a material to be cut, so that the troublesome positioning is not changed.
[0004]
Accordingly, an object of the present invention is to provide a workpiece positioning device in a cutting machine that can easily position a workpiece to a cutting position even when cutting a long workpiece. Is.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, an invention according to claim 1 is provided on an auxiliary base mounted on a side of a base of a cutting machine and capable of placing a material to be cut on the base. A pair of front and rear contact members that can be slidable in the front-rear direction and fixed at an arbitrary slide position, and the contact member can hold the material to be cut on the auxiliary base. One of these is provided with a rolling element capable of contacting the material to be cut and capable of feeding the material to be cut in the left-right direction by a rotating operation in the contact state.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a plan view of a positioning device provided in a tabletop circular saw as a cutting machine, FIG. 2 is a side view thereof, and FIG. 3 is a front view thereof. Reference numeral 1 is a tabletop circular saw base, on which a turntable 2 supporting a main body provided with a saw blade in the front-rear direction (the right side in the figure is the front) is placed so as to be horizontally rotatable at the center. The overhanging portions 3 and 3 are extended so that the upper surface is flush with the upper surface of the turntable 2. A guide fence 4 is erected in the left-right direction so as to cross the turntable 2 between the left and right projecting portions 3 and 3, and a guide surface perpendicular to the upper surface of the turntable 2 is located in front of the guide fence 4. 5 is formed.
[0007]
Reference numeral 6 denotes a positioning device of the present invention. A pair of parallel rods 7 and 7 which are inserted in the lateral direction to the side surface of one overhanging portion 3 and the rods 7 and 7 are loosely inserted orthogonally into the rods 7 and 7. 7 and an auxiliary base 8 slidable along the line 7. The auxiliary base 8 has a rectangular tube shape that is long in the front-rear direction. A pair of knob screws 9 and 9 screwed to the lower surface of the auxiliary base 8 are screwed in, and the rods 7 and 7 are pressed at their tips, respectively. It can be fixed at the slide position. Further, the auxiliary base 8 is set so that the upper surface of the auxiliary base 8 is flush with the protruding portion 3 when connected to the rods 7, and a circular knob portion 11 is provided at the lower end of the auxiliary base 8. The fixed adjustment bolts 10 and 10 are screwed together, and the height of the auxiliary base 8 can be finely adjusted by screw feed of the adjustment bolt 10 by the turning operation of the knob portion 11.
[0008]
Further, a rear plate 12 as a contact member whose front surface is located on the same plane as the guide surface 5 of the guide fence 4 is fixed by bolts 13 and 13 on the rear side of the upper surface of the auxiliary base 8. However, the through holes 14 and 14 of the bolts 13 and 13 in the rear plate 12 are elongated holes in the front-rear direction to enable fine adjustment of the rear plate 12.
On the other hand, a front plate 15 is provided on the front side of the rear plate 12 as a contact member. The front plate 15 has a base portion 17 that fits into a groove 16 that is recessed from the front end toward the rear on the upper surface of the auxiliary base 8, and the rear end of the base portion 17 is raised at a right angle. And has a pressing surface 18 parallel to the front surface of the rear plate 12 on the rear surface. A slide hole 19 is formed in the center of the base portion 17 in the front-rear direction, and a knob screw 20 that passes through the slide hole 19 is screwed in front of the auxiliary base 8. As indicated by the two-dot chain line in FIG. 1, the knob screw 20 can be slid in the front-rear direction within a range in which the knob screw 20 can be relatively moved, and can be fixed at an arbitrary slide position by screwing the knob screw 20.
[0009]
A window 21 is formed at the center of the front plate 15, and a support piece 22 is horizontally bent rearward above the window 21, so that a roll is formed between the support piece 22 and the base portion 17. A rubber roller 23 is pivotally supported as a moving body. In this roller 23, the pin 24 fixed to the center is loosely inserted into the long holes 25, 25 formed in the support piece 22 and the base portion 17 at the same position in the vertical direction, whereby the base portion 17. It is pivotally supported in the up and down direction, and can be moved in the front and back direction within a range in which the pin 24 can move in the long hole 25 while maintaining the posture. That is, in the retracted position, a part of the roller 23 protrudes rearward from the window 21 beyond the pressing surface 18 of the front plate 18, and in the advanced position, the roller 23 moves forward from the pressing surface 18. .
[0010]
In the positioning device 6 configured as described above, when the material to be cut W is a long material protruding outward from the projecting portion 3 of the tabletop circular saw machine, the front plate 15 is loosened by loosening the knob screw 20 of the front plate 15. In a slide-free state, the workpiece W is set on the turntable 2 of the base 1, the overhanging portion 3 and the auxiliary base 8 with the cutting position aligned with the black line. Since the rear plate 12 of the auxiliary base 8 and the guide fence 4 of the tabletop circular saw are located on the same plane in the left-right direction, the material W to be cut is rearward using the guide fence 4 and the rear plate 12. Can be positioned. Next, the front plate 15 is slid rearward, the pressing surface 18 is brought into contact with the front surface of the material W to be cut, and the roller 23 is pressed rearward with a finger in this state. It contacts the front surface of the material W. Therefore, if the roller 23 is rotated in an arbitrary direction as shown by the arrow in FIG. 1, the material to be cut W is finely moved in the left-right direction by the feed of the roller 23, and the black line can be adjusted to the cutting position.
When the knob screw 20 is tightened after the positioning is completed, the workpiece W is nipped and fixed on the auxiliary base 8 by the front plate 18 and the rear plate 12.
[0011]
As described above, according to the positioning device 6 of the above embodiment, the auxiliary base 8 that is mounted on the side of the base 1 and on which the workpiece W can be placed, and the pair of front and rear front plates 18 provided on the auxiliary base 8 are provided. And the rear plate 12, and the plates 12 and 18 can hold the workpiece W on the auxiliary base 8, while the front plate 18 can be brought into contact with the workpiece W and the contact state thereof. By providing the roller 23 that can feed the workpiece W in the left-right direction by rotating operation at, it is possible to finely adjust the cutting position by using the roller 23 to slightly move the workpiece W left and right. Become. Therefore, the black line can be quickly and accurately adjusted to the cutting position, and further improvement in workability can be expected.
[0012]
In the above embodiment, the positioning device is provided only on the left side of the base, but it can be provided on both the left and right sides. In addition, the number of rollers is not limited to one, but two rollers that can come into contact with the material to be cut are arranged side by side in the left-right direction, and a third roller for rotating operation that makes contact with the two rollers simultaneously is provided. There can be more than one. Of course, the rolling elements are not limited to rollers, and balls can also be used. Further, the abutting member is not limited to the plate shape as in the above embodiment, and may be a roller or a pin shape as long as the material to be cut can be pinched.
As the sliding form of the contact member, if the rolling element can be attached, a rod-like body or a cylindrical body may be used, or a biasing means for biasing to the other contact member side may be provided. . Moreover, the positioning device of the present invention can be applied not only to a tabletop circular saw machine but also to a cutting machine for cutting steel materials.
[0013]
【The invention's effect】
According to the positioning device of the first aspect, the auxiliary base and the pair of front and rear contact members are provided, and the contact member can hold the material to be cut on the auxiliary base. On the other hand, by providing a rolling element that can abut on the workpiece and can feed the workpiece in the left-right direction by a rotation operation in the abutting state, the workpiece can be utilized using the rolling element. Can be finely adjusted to the cutting position. Therefore, the black line can be quickly and accurately adjusted to the cutting position, and further improvement in workability can be expected.
[Brief description of the drawings]
FIG. 1 is a plan view of a positioning device.
FIG. 2 is a side view of the positioning device.
FIG. 3 is a front view of the positioning device.
[Explanation of symbols]
1 ·· Base, 3 ·· Overhanging portion 4 ·· Guide fence 6 ·· Positioning device 7 ·· Rod 8 ·· Auxiliary base 12 ·· Rear plate 15 ·· Front plate 17 ·· Base , 18 .. pressing surface, 19 .. slide hole, 21 .. window, 23.

Claims (1)

Auxiliary base that is mounted on the side of the base of the cutting machine and on which the material to be cut can be placed, and provided on the auxiliary base, at least one of which can slide in the front-rear direction and is fixed at an arbitrary sliding position A pair of front and rear abutting members capable of holding the material to be cut on the auxiliary base by the abutting members, while either one of the abutting members hits the material to be cut. An apparatus for positioning a material to be cut in a cutting machine, comprising a rolling element capable of contacting and capable of feeding the material to be cut in a left-right direction by a rotation operation in the contact state.

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