JPH11226903A - Fixing device for tilting position of bench cutting machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance operability of both tilt of a cutting tool part and rotational positioning of a turntable. SOLUTION: A handle 21 is provided in the front end of a turntable 2 and a rod 19 is engaged with the handle 21. The rod 19 is communicated from the front end of the turntable 2 to the rear end thereof. The rod 19 is screwed and fitted into a female screw 20 provided in the inside of a long hole of a holder 6. A spring 26 energized on the side of the holder 6 is provided between the receive part 2b of the turntable 2 and a sleeve 25. The tilting position of the holder 6 is held even in such a state that fixation of the holder 6 is released by the spring 26.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for fixing an inclined position of a holder in a tabletop cutting machine in which a cutting tool can be freely inclined.

[0002]

2. Description of the Related Art A conventional technique will be described with reference to FIGS. Conventionally, a tilt-type tabletop cutting machine is, for example,
It has been proposed by, for example, Japanese Patent Publication No. 9901. The tabletop cutting machine includes a cutting tool 12 and a motor 9 for driving the cutting tool 12.
And a holder 6 having the cutting tool 8 mounted on its upper end so as to be rotatable in the vertical direction. The holder 6 extends along the left and right directions on the base 1 on which the workpiece is placed. The holder 6, that is, the cutting tool 8 is inclined to an arbitrary position in the left-right direction to cut the workpiece at an arbitrary angle. A method of positioning the holder 6, that is, the inclined position of the cutting tool 12, will be described. First, the clamp lever 30 provided behind the holder 6
And the holder 6 is tilted in the left-right direction, and the tilt position is determined by a tilt scale (not shown) provided on the holder 6 and the indicator 4 provided on the base 1. In this state, the clamp lever 30 is tightened to hold the holder 6 It is positioned by fixing it to the base 1. Also, turntable 2
The rotation of the turntable 2 is fixed or released by rotating the handle 21 provided at the front end of the turntable 2 so that the tip of the handle 21 is
The turntable 2 is fixed by pressing the contact portion 1c.

[0003]

Usually, the operator is located in front of the product main body for the purpose of operating the cutting tool portion 8.
Therefore, when the clamp lever 30 is operated, the hand must be extended from the near side to the rear of the holder 6. Therefore, when setting the inclination angle of the cutting tool portion 8, the hand is extended to the rear of the holder 6, the clamp lever 30 is loosened, the holder 6 is inclined to an arbitrary position, and the hand is extended to the rear of the holder 6 again, and the clamp lever is extended. Since the holder 6 and the turntable 2 were fixed by tightening 30, the operability was very poor. In addition, since the handle 21 is rotated to fix and release the rotation of the turntable 2, there is an inconvenience of setting the tilt position of the cutting tool 8 and setting the rotation position of the turntable 2.

An object of the present invention is to eliminate the above-mentioned disadvantages of the prior art, to improve the operability of setting the inclination position of the cutting tool, and to easily set the inclination position of the cutting tool and the turning position of the turntable. It is to be.

[0005]

SUMMARY OF THE INVENTION An object of the present invention is to provide a cutting tool having a base for supporting a work material, a turntable which is rotatable in a horizontal direction, and a cutting tool having a cutting tool above the base. A desktop cutting machine provided with a holder for inclining the cutting tool part in the left-right direction between the turntable and the cutting tool part, a handle is provided rotatably at the front end of the turntable, and a rod is engaged with the handle. Fixing and unlocking the turntable and the holder with the rod, and fixing and unlocking the base and the turntable with the sleeve provided on the rod;
This is achieved by engaging an elastic body that presses the turntable and the holder against the rod.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. 1 is a partial sectional left side view of the tabletop cutter, FIG. 2 is an enlarged partial sectional view of FIG. 1, FIG. 3 is a front view of FIG. 1, FIG. 4 is a partial rear view of FIG. 1, and FIG. It is the front view inclined rightward.

In FIG. 1, a turntable 2 is buried and supported substantially at the center of a base 1 so as to be rotatable in a horizontal direction about a shaft 22. In the present invention, a member on which a work material is placed is generically called a base portion. Turntable 2
A holder shaft 3 is provided at the rear portion so as to protrude horizontally, and the axis of the holder shaft 3 is positioned so as to substantially coincide with the upper surface of the turntable 2. The holder 6 is mounted on the turntable 2 via the holder shaft 3, and the holder shaft 3
It is possible to incline along the left-right direction with the fulcrum as a fulcrum. The holder 6 has an elongated hole 6a centered on the holder shaft 3 for mounting a female screw 20 described later. A processing material such as wood (not shown) is placed on the upper surfaces of the base 1 and the turntable 2, and a fence 5 is provided on the upper surface of the base 1 so that the side surface of the processing material is brought into contact with and positioned.
In FIG. 4, the turntable 2 is provided with an indicator 4 for indicating a tilt angle of a tilt graduation provided on the holder 6.

A cutting tool 8 is mounted on the upper end of the holder 6 via a shaft 7 so as to be rotatable in a vertical direction. As is well known, the cutting tool section 8 includes a cutting tool 12.
(In this embodiment, a circular saw), a vertical motor 9 for driving the cutting tool 12, a cover for guarding the cutting tool 12, and the like are supported. Reference numeral 10 denotes a handle, and 11 denotes a saw shaft on which the cutting tool 12 is mounted. Cutting tool part 8 is holder 6
It is supported in a state of being constantly urged upward by a spring 13 mounted between the cutting tool 8 and the cutting tool 8. Further, while the bolt 14 is screwed into the cutting tool portion 8, the holder 6
On the side, the stopper 1 to which the end of the bolt 14 can contact
The lower limit of the swing can be adjusted by adjusting the screwing degree of the bolt 14 by regulating the lower swing limit of the cutting tool portion 8 by the abutment thereof.

A stopper 16 is mounted on the front surface of the holder 6, and adjustment bolts 17, 18 are vertically screw-fitted behind the upper surface of the turntable 2 so as to be positioned on the movement locus of the stopper 16. As shown in FIG. 5, when the holder 6 is inclined rightward, the surface 16b of the stopper 16 is engaged with the head of the adjustment bolt 18 at a predetermined inclination angle, and the right inclination position of the cutting tool part 8 is set. . When the holder 6 is tilted leftward, the stopper 16 is tilted at a predetermined tilt angle.
Surface 16a engages with the head of the adjustment bolt 17, and sets the left inclined position of the cutting tool portion 8. In this embodiment,
When the holder 6 is at a right angle position, the stopper 16 is formed in a V-shape extending at an angle of 45 degrees in the left-right direction, so that when the holder 6 is inclined up to 45 degrees in the left-right direction, the surface 16a or the surface 1
6b is horizontal, and the stopper 16 is
7 or in contact with the adjustment bolt 18. Therefore, the adjusting bolts 17 and 18 are fixed to the holder 6 in the left-right direction.
It is provided so as to engage with the stopper 16 when it is tilted to the position of 5 degrees, that is, the left tilt position and the right tilt position.

In FIGS. 1 and 2, a plurality of support projections 2a project from the lower surface of the turntable 2. As shown in FIG. A rod 19 for rotating the turntable 2 is rotatably inserted into the support protrusion 2a, communicates from the front end to the rear end of the turntable 2, and penetrates to the elongated hole 6a of the holder 6. A female screw 20 is provided in the elongated hole 6a of the holder 6,
A screw portion 19a formed at one end of the rod 19 is screw-fitted into a screw hole 20a of the female screw 20. A handle 21 is attached to the other end of the rod 19. The holder 6 can be tilted in the left-right direction within the range of the elongated hole 6a with the holder shaft 3 as a fulcrum.

A contact portion 1a protruding toward the turntable 2 is provided at a desired position inside the base 1, and a pin 23, a washer 24 and a sleeve 25 are provided near the contact portion 1a on the rod 19. With the rotation of the rod 19 itself via the handle 21, the sleeve 25 presses the contact portion 1 a of the base 1.
And the female screw 20 presses the receiving surface 6b of the elongated hole 6a, so that the holder 6 is fixed at an arbitrary inclined position with respect to the turntable 2. An elastic spring 26 is provided between the receiving portion 2b of the turntable 2 and the sleeve 25, and the turntable 2 is biased toward the holder 6 by the spring 26. The biasing force of the spring 26 is such that the holder 6 can be held at an inclined position even when the holder 6 is not fixed, and the holder 6 can be easily inclined by the force of the operator.

Next, the operation of the desk cutting machine will be described. First, the work material is placed on the base 1 and the turntable 2, and is fixed in a state where the side portions thereof are in contact with the fence 5 and aligned. The cutting tool 12 is vertically cut with respect to the base 1 (the state shown in FIG. 3), and the cutting tool 9 is tilted to the right or left with respect to the base 1 together with the holder 6 so that the cutting tool 12 Is inclined with respect to the base 1 (FIG. 5).
Angle cutting).

In the case of vertical cutting, after the holder 6 is fixed in a vertical state, the operator presses the handle 10 of the cutting tool unit 8 from above against the urging force of the spring 13, and the cutting tool unit 8 is cut. Is pressed down about the shaft 7 with respect to the holder 6, the work material is cut by the cutting tool 12. Further, if the operator pushes down the cutting tool portion 9 in a state where the holder 6 is inclined and held to the right side as shown in FIG. 5, it is possible to cut an angle of the work material.

In the above configuration, a method for fixing and releasing the holder 6 and the turntable 2 will be described. When the handle 21 is loosened, the sleeve 25 stops pressing the contact portion 17 and the fixed state of the turntable 2 is released.
At the same time, the female screw 20 stops pressing in the direction of the turntable 2 and the fixation of the turntable 2 and the holder 6 is released. At this time, the pressing force between the turntable 2 and the holder 6 is only the pressing force by the spring 26, and the holder 6 is held at the inclined position. As a result, the turntable 2 becomes rotatable about the shaft 22 as a fulcrum, and the holder 6 becomes rotatable left and right within the range of the elongated hole 6a with the holder shaft 3 as a fulcrum when a force greater than the pressing force of the spring 26 is applied. . Next, turntable 2
When the handle 21 is tightened in a state where is set to a desired rotation angle and the holder 6 is set to a desired inclination angle, the sleeve 2
5 presses the contact portion 16, and further, the female screw 20 presses the turntable 2 side, so that the positions of the turntable 2 and the base 1 and between the turntable 2 and the holder 6 are fixed.

When cutting the work material with the cutting tool 12, as shown in FIG. 1, when the cutting tool portion 8 is inclined right and left from the state of the right-angle cutting position, the handle 21 is loosened and the contact portion by the sleeve 25 is loosened. When the pressing of the turntable 2 is stopped, the fixing state of the turntable 2 and the base 1 is released, and the turning table 2 is rotated, whereby the cutting tool portion 8 is horizontally rotated. At this time, the pressing of the female screw 20 on the turntable 2 side is also stopped, and the fixed state of the turntable 2 and the holder 6 is released. Is generated, and the tilting position of the cutting tool 8 does not change unless the tilting operation is lightly performed and the tilting operation is intentionally performed. When the turntable 2 reaches a desired angular position, the handle 21 is tightened, and the turntable 2 and the base 1 are fixed. The cutting tool portion 8 is maintained at a desired angular position, and the workpiece can be angularly cut by grasping the handle 10 and pushing down the cutting tool portion 8 downward. Therefore, erroneous operation of the holder 6 can be prevented when only the positioning setting of the rotation of the turntable 2 is performed.

As shown in FIG. 5, when the cutting tool portion 8 is inclined right and left from the state of the right angle cutting position, the handle 2
1 is released, the pressing of the female screw 20 against the turntable 2 is stopped, and the fixed state of the holder 6 is released. When the operator applies a force equal to or greater than the pressing force of the spring 26 to the cutting tool portion 8, the holder 6 tilts and turns. When the holder 6 reaches the desired inclined position, the handle 21 is tightened to fix the turntable 2 and the holder 6, so that the holder 6 is supported at the desired inclined position. The cutting tool section 8 is maintained at a desired inclined position, and the work piece can be inclinedly cut by grasping the handle 10 and depressing the cutting tool section 8.

[0017]

According to the present invention, the operator can easily set the right angle position of the cutting tool portion by operating the handle provided at the front end of the turntable without reaching behind the holder. Therefore, the operation for adjusting the tilt position of the cutting tool can be simplified.

Further, since the turning position of the turntable can be set simultaneously with the setting of the inclination position of the cutting tool portion by operating the handle, the operation for adjusting the position of the cutting tool portion can be simplified.

Furthermore, even when the handle is loosened, the spring comes into contact with the spring, causing frictional resistance between the turntable and the holder. The tilting operation does not become light and the tilting position of the cutting tool changes unless the tilting operation is performed intentionally. Not
It is possible to prevent an erroneous operation when only setting the positioning of the turntable rotation.

[Brief description of the drawings]

FIG. 1 is a partial sectional left side view of a tabletop cutting machine showing an embodiment of the present invention.

FIG. 2 is an enlarged partial cross-sectional view of FIG.

FIG. 3 is a front view of FIG. 1;

FIG. 4 is a partial rear view of FIG. 1;

FIG. 5 is a front view of the cutting tool in FIG.

FIG. 6 is a front view of a conventional tabletop cutting machine.

FIG. 7 is a partial rear view of FIG. 6;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Base, 1a ... Contact part, 2 ... Turntable, 2a
... Supporting projections, 2b ... Receiving part, 6 ... Holder, 6a ... Elongated hole, 6b ... Receiving surface, 19 ... Rod, 19a ...
0: female thread, 20a: screw hole, 21: handle, 23
... pins, 24 ... washers, 25 ... sleeves, 26 ... springs.

Claims (1)

[Claims] 1. A base for supporting a workpiece, a turntable rotatable in a horizontal direction is fitted to the base, and a cutting tool portion having a cutting tool is provided above the base. In a desktop cutting machine provided with a holder for inclining the cutting tool part in the left-right direction between the parts, a handle is rotatably provided at the front end of the turntable, a rod is engaged with the handle, and the turntable and the turntable are engaged with the rod. It is characterized in that it is fixed and released from the holder, fixed and released from the base and the turntable by a sleeve provided on the rod, and an elastic body for pressing the turntable and the holder against the rod is engaged with the rod. Device for fixing the tilt position of the tabletop cutting machine.