JPH07256601A - Cutting depth setting device of bench cutting machine - Google Patents

Abstract

PURPOSE:To indicate a cutting depth of a work by using a rotating blade having a different outer diameter, such as a saw blade or a grooving cutter. CONSTITUTION:An indicator guide 16 is rotatably supported on a rotating blade part holder 6. An indicator holder 20 and a scale holder 21 are respectively slidably held on a slot part 14a and a slot part 14b. A pin of the indicator guide 16 is loosely fitted in a guide groove of the indicator holder 20. By pressing down a rotating blade part 10, the indicator guide 16 is pressed up. A graduation of a scale 24 pointed out by an indicator 22 of the indicator holder 20 is indicated as a cutting depth at the present time.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cutting amount setting device of a tabletop cutting machine for displaying and setting a cutting depth when a cutting work is performed on a work material.

[0002]

2. Description of the Related Art The prior art will be described below with reference to FIGS. BACKGROUND ART Conventionally, as a tabletop cutting machine having a function of displaying a cutting amount of a work material, for example, the actual cutting machine 62-203
There is 001 publication. A lower cover 135 that covers the lower half of the saw blade 112 is rotatably supported by an upper cover 114 that covers the upper half of the saw blade 112, and a cut amount scale 136 is provided on the side surface of the lower cover 135. At the lower end of the upper cover 114, a pointer 137 indicating the amount of cut into the work material 2 is provided. When the rotary cutting tool 110 is pushed down, the lower surface of the lower cover 135 comes into contact with the upper surface of the work material 2, and when the rotary cutting tool 110 is further pushed down, the lower cover 135 rises and the pointer 137.
The numerical value of the cutting amount scale 136 designated by is displayed as the cutting amount of the saw blade 112.

[0003]

However, the depth of cut scale 1
Reference numeral 36 is a scale corresponding only to the saw blade 112 having a single diameter, and since generally commercially available groove cutting cutters and the like have different outer diameters, there is a drawback that the above-mentioned cut amount scale 136 cannot be used.

An object of the present invention is to eliminate the above-mentioned drawbacks of the prior art, and to make it possible to display the depth of cut of a work material even when a rotary blade having a different outer diameter such as a groove cutter is used. . It is also possible to set the lower limit position of the rotary blade part based on the displayed cutting amount.

[0005]

In order to achieve the above object, the present invention provides a supporting means at the rear of a base for supporting a work material, the supporting means is positioned above the base, and In a tabletop cutting machine equipped with a rotary knife part that can be vertically swung and can be moved back and forth in parallel with the upper surface of the base, a long hole part is provided in parallel with the rotary knife part, and one of the long hole parts has a scale. A scale holder and an indicator holder having a pointer for indicating the scale of the scale holder are slidably provided in the other long hole portion, and the scale holder is held in the long hole portion at an arbitrary position by a position holding means, and the support is provided. The arm member is pivotally supported by the means so as to be vertically swingable, and a pin provided at the tip of the arm member is loosely fitted in a guide groove formed in the indicator holder, and the pin is guided by the swing of the rotary blade part. It is to the move moving an indicator holder, in which so as to display the depth of cut of the workpiece.

In order to achieve another object, according to the present invention, the arm member is further arranged at a position where it can abut on the supporting means, and the arm member is placed at a desired lower swing limit position of the rotary blade part. By providing the rotary blade portion with a cutting adjustment member that abuts on the arm member and regulates the lower swing limit position of the rotary blade portion,
The cutting amount of the work material can be set.

[0007]

First, when the rotary blade portion is pushed down until the blade tip of the rotary blade comes into contact with the upper surface of the work material, the indicator holder is pushed up while the pin moves in the guide groove of the indicator holder. With the work material and rotary blade in contact, move the scale holder to align the scale “0” of the scale holder with the pointer of the indicator holder. Further, when the rotary knife part is lowered, the scale holder is held by the rotary knife part, but since the indicator holder is pushed up with respect to the scale holder by the lowered amount of the rotary knife part, the scale holder is not covered by the rotary knife part. You can know the amount of cut into the cutting material.

Further, after the scale "0" of the scale holder is aligned with the pointer position of the indicator holder, the indicator holder is lifted and the arm member is raised with the rotary blade part returned to the upper limit position, and the desired cutting amount is obtained. Align the pointer of the indicator holder with the value of. Then, while keeping the position of the indicator holder, the cut adjusting member is lowered until it contacts the arm member. With this, the desired depth of cut is set. Then, when the rotary blade portion is swung downward, the cutting adjustment member comes into contact with the arm member at the position of the set desired cutting amount, and the rotary blade portion is restricted at the set swing lower limit position.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. 1 is a partial right side view showing an embodiment of a tabletop cutting machine of the present invention, and FIG. 2 is a partial sectional right side view showing a cutting setting operation,
3 is a right side view, FIG. 4 is an enlarged view around the indicator holder and the scale holder, FIG. 5 is a sectional view taken along the line I-I of FIG. 1, FIG. 6 is an overall left side view of the tabletop cutting machine, and FIG. 7 is FIG. FIG. 8 is an enlarged view around the scale and indicator, and FIG. 8 is an enlarged view around the scale and indicator in FIG.

In FIG. 6, a fence 3 supporting the side surface of the work material 2 is fixed to the upper surface of the base 1. On the rear part of the base 1, a holder 4 having a slide holding part 4a formed in the upper direction in the horizontal direction is provided.
And a slide bar 5 is slidably inserted in the slide holding portion 4a in the horizontal direction. A rotary blade part holder 6 is connected to the right end of the slide bar 5, and a support 7 for preventing the slide bar 5 from coming off is provided at the left end. In addition,
The knob 8 provided on the upper portion of the holder 4 fixes the sliding position of the slide bar 5.

The rotary blade portion holder 6 is swingably movable in the vertical direction with respect to the base 1 via a shaft 9 and is rotatable.
Is pivotally supported. The rotary knife unit 10 is a motor 11,
A rotary blade (eg, saw blade 12 is attached in FIG. 6) such as a saw blade 12 and a groove cutter 13 that are driven to rotate by a motor 11, and an upper cover 1 that covers the upper half of the rotary blade.
4 and a handle 15 that pushes down the rotary blade part 10. When the rotary cutter 10 is held horizontally by moving it with the handle 15 as viewed from FIG. 6, the slide bar 5 integrated through the rotary cutter holder 6 slides back and forth with the slide holding portion 4a as a guide. To do. Rotary knife part holder 6
A coil spring (not shown) for constantly urging the rotary knife unit 10 upward is attached between the rotary knife unit 10 and the rotary knife unit 10, and a predetermined upper limit position (position in FIG. 6) is set by an upper limit stopper (not shown).
Is held in. The supporting means in the present embodiment includes a holder 4, a slide bar 5, a rotary blade part holder 6,
It is composed of a shaft 9.

An end of an indicator guide 16 serving as an arm member is pivotally supported on the rotary blade holder 6 at the same fulcrum as the fulcrum of the rotary blade 10. A contact surface 16a for contacting the rotary blade part holder 6 is formed in the lower part of the indicator guide 16, and the indicator guide 16 is always in contact with the side surface 6a of the rotary blade part holder 6.

A cutting adjustment bolt 17 serving as a cutting adjustment member for setting the lower limit position (cutting amount) of the rotary blade portion 10 penetrates from the upper part of the upper cover 14 to the inside, and the lower end 17a of the cutting adjustment bolt 17 is the indicator guide. It is screw-fitted so as to come into contact with the contact surface 16 b formed on 16.
The position of the cut adjustment bolt 17 is fixed by a wing nut 18, and a knob 19 provided on the upper end of the cut adjustment bolt 17
Turn the cut adjustment bolt 17 to move it up and down.

Long holes 14a and 14b are formed on the side surface of the upper cover 14 in parallel in the vertical direction, and the indicator holder 20 is slidably held in the long hole 14a and the scale holder 21 is slidably held in the long hole 14b. Has been done. An indicator 22 is fixed to the indicator holder 20 with two screws 23 so as to be located on a side surface of the upper cover 14,
The scale holder 21 is fixed to the scale holder 21 with two screws 25 so as to be positioned on the side surface of the upper cover 14 and displaying a scale of 0 to 30 mm at intervals of 3 mm. The scale holder 21 can be held at a desired position in the long hole portion 14b by providing the spring 26 as a position holding member for applying a preload to the side surface of the long hole portion 14b in the scale holder 21.

In FIG. 5, a pin 27 is provided at the tip of the indicator guide 16 and the pin 27 is loosely fitted in a guide groove 20a provided in the indicator holder 20, whereby the indicator guide 16 and the indicator holder 20 are connected,
The indicator holder 20 is held in the elongated hole portion 14a. The guide groove 20a, which follows the movement locus of the pin 27, has a shape in which the vertical change amount of the rotary blade portion 10 due to the swing of the rotary blade portion 10 and the movement change amount of the indicator holder 20 have a constant proportional relationship. With the constant proportional relationship, the movement amount of the indicator holder 20 is always constant regardless of the position of the rotary blade part 10, so that the scales of the scale 24 can be marked at equal intervals. A protrusion 21a is formed on the side opposite to the scale 24 of the scale holder 21, and the indicator holder 2 is provided on the upper surface of the protrusion 21a.
The lower end 20b of 0 abuts. When the protrusion 21a and the indicator holder 20 are in contact with each other, the scale "0" of the scale 24 and the pointer of the indicator 22 are aligned.

Next, a procedure for giving the cut amount H to the work material 2 will be described. (1) Initial setting Push down the rotary blade part 10 to remove the work material 2 as shown in FIG.
The tip of the grooving cutter 13 (the same applies to the saw blade 12) is lightly contacted with the upper surface, and in this state, the scale holder 21
Is moved by hand to align the scale “0” of the scale 24 with the pointer position of the indicator 22. At this time, scale 2
When the indicator “0” on the scale 4 and the indicator 22 match, the projection 21a of the scale holder 21 is moved to the indicator holder 2
Since it abuts on 0, the scale "0" of the scale 24 can be aligned with the pointer position of the indicator 22 without checking the indicator 22 and the scale 24. In addition, at the time of initial setting, the cutting adjustment bolt 17 contacts the indicator guide 16, and the cutting adjustment bolt 17 is retracted upward as much as possible so that the lower limit position of the rotary blade part 10 is not inadvertently restricted. (2) Setting the cutting depth of the work material With the rotary blade part 10 returned to the upper limit position, lift the indicator holder 20 by hand. Then, the indicator guide 16 also rises via the pin 27. Then, the pointer of the indicator 22 is aligned with the numerical value of the cut amount H of the scale 24, and the knob 19 is rotated with the other hand while holding the indicator holder 20, and the cut adjustment bolt 1
The cut adjustment bolt 17 is lowered until the lower end of 7 contacts the contact surface 16b, and the position of the cut adjustment bolt 17 is fixed by the wing nut 18. With this, the cutting amount H of the work material 2
The setting of (the lower limit position of the swing of the rotary blade part 10) is completed. (3) Cutting Work First, the handle 15 is held and the rotary cutting tool 10 is moved to the front side by the slide bar 5. Next, the groove cutting cutter 13 is rotationally driven by the motor 11 to push down the rotary blade portion 10, and the groove cutting cutter 13 cuts the work material 2. The pin 27 moves up in the guide groove 20a of the indicator holder 20 and pushes up the indicator holder 20 so that the descending amount of the rotary blade 10 and the ascending amount of the indicator holder 20 maintain a constant proportional relationship, and the indicator 22 points. The scale of the scale 24 is displayed as the current cut amount.

Further, when the depth of cut is further increased, the lower end 17a of the depth of cut adjusting bolt 17 is set at the position of the set depth of cut H.
Is in contact with the contact surface 16b of the indicator guide 16, and the contact surface 16a of the indicator guide 16 is in contact with the side surface 6a of the rotary blade portion holder 6, so the rotary blade portion 10 cannot be lowered further than this and swings. It has reached the lower limit position. By moving the rotary blade part 10 to the inner side while maintaining the lower limit position, it is possible to perform grooving to the depth of the cutting amount H in the work material 2. When the same cutting amount is given to the work material 2 having the same height, it is not necessary to set the lower limit position of the rotary blade part 10 again, and the grooving work can be repeated.

Further, as shown in FIG. 9, the lower end 17a of the cut adjusting bolt 17 may not be brought into contact with the indicator guide 16 but may be brought into contact with the protruding portion 6b of the rotary cutting tool holder 6. . In this case, the depth of cut is set by the indicator 2 at the "0" position on the scale 24.
After the initial setting of aligning the pointers of 3, remove the work material 2 from the base 1 once and push down the rotary cutting tool part 10,
The pointer of the indicator 23 is adjusted to the numerical value of the cut amount H to be given to the work material 2. In that state, the cut adjustment bolt 17 is moved to move the cut adjustment bolt 17 to the lower end 17a.
Is brought into contact with the upper surface of the projecting portion 6b, and the cut adjustment bolt 17 is fixed with the wing nut 18 to set the cut amount of the rotary blade portion 10.

After setting the lower limit position, the rotary cutting tool portion 10 is once returned to the upper position, and the work material 2 is placed on the base 1. When the rotary blade part 10 is pushed down again, the scale of the scale 24 indicated by the indicator 22 is displayed as the current cut amount by the same action as above. When the position of the set cutting depth H is reached, the cutting adjustment bolt 17 comes into contact with the upper surface of the protruding portion 6b, and the lower limit position of the rotary blade portion 10 is restricted.

Further, as an application example, if a spring 28, which is an elastic member for giving a rising rotational force, is provided at the fulcrum (shaft 9) of the indicator guide 16, the contact surface 16b of the indicator guide 16 is always provided with the cut adjustment bolt 17. It contacts the lower end 17a. Therefore, when the cutting adjustment bolt 17 is moved up and down, the indicator guide 16 and the indicator guide 1 are moved by the spring 28 as shown in FIG.
The indicator holder 20 always follows the notch adjusting bolt 17 via 6.

The depth of cut is set according to the numerical value of the depth of cut H which is to be applied to the work material 2 by the scale adjusting bolt 17 by the scale 2.
Depth of cut H
Can be set. Therefore, when setting the cutting depth, it is not necessary to move the work material 2 and push down the rotary blade portion 10 to set the cutting depth, or to hold the position of the indicator holder 20 with the other hand. Can be set.

When the rotary blade portion 10 is pushed down, the indicator guide 16 is pushed by the cut adjusting bolt 17 and descends against the rising rotational force of the spring 28. When the set cutting depth H is reached, the contact surface 1 of the indicator guide 16
6a contacts the side surface 6a of the rotary blade part holder 6, and the lower limit position of the rotary blade part 10 is regulated. Hereinafter, the cutting operation is performed by the same operation as the above-mentioned cutting.

The elongated holes 14a and 14b provided on the side surface of the upper cover 14 may be formed in a straight line, but the locus of movement of the pin 27 for moving the indicator holder 20 and the elongated holes 14a, 14b. It is desirable to set the distance 14b so that the distance gradually changes within the upper and lower limit regulation range of the rotary blade portion 10, and a point slightly separated from the swing fulcrum of the rotary blade portion 10 (in the present embodiment, swinging). About 50 from the fulcrum
mm-shaped arc-shaped elongated holes 14a, 14b
When the pin 27 is formed, the interval between the swing locus of the pin 27 and the elongated holes 14a and 14b can be processed at a small interval,
The rotary blade part 10 can be miniaturized.

In this embodiment, the indicator holder 20 is provided in the long hole portion 14a and the scale holder 21 is provided in the long hole portion 14b. However, contrary to the above configuration, the scale holder 21 and the long hole portion 14b are provided in the long hole portion 14a. The indicator holder 20 may be provided.

Next, as a second embodiment, the downward change amount of the rotary cutting tool 10 and the moving change amount of the indicator holder 20, which are the features of the present invention, are made to have a constant proportional relationship, and the work material 2 is
If the application of displaying the depth of cut given to
0, a structure as shown in FIG. 11 is also conceivable. FIG. 10 is a right side view, partly in section, showing the second embodiment, and FIG.
It is a sectional view taken along the line I-II. The description of the same parts as those in the above configuration will be omitted.

A position where a protrusion 6c is provided at the front end of the rotary blade portion holder 6, the cut adjustment bolt 17 penetrates from the upper portion of the upper cover 14 to the inside, and the lower end 17a of the cut adjustment bolt 17 abuts the upper surface of the protrusion 6c. It is screwed to.

On the side surface of the upper cover 14, there are provided elongated holes 14c and 14d formed in parallel in the lateral direction, and the indicator holder 29 is slidable in the elongated hole 14c and the scale holder 30 is slidable in the elongated hole 14d. Is held. Like the scale holder 21, the scale holder 30 is provided with a spring (not shown) that applies a preload to the side surface of the elongated hole portion 14d, so that the scale holder 30 can be held at a desired position within the elongated hole portion 14d.

A connecting bar 31 is swingably supported on the rotary blade holder 6, and a pin 32 is provided at the tip of the connecting bar 31. A guide portion 14e is provided inside the upper cover 14, and the pin 32 is loosely fitted in the guide groove 14a formed in the guide portion 14e and the indicator holder 29 to connect the connecting bar 31 and the indicator holder 29. The guide portion 14e and the guide groove 29a have such a shape that the downward change amount of the rotary blade portion 10 due to the swing of the rotary blade portion 10 and the change amount of the movement of the indicator holder 29 via the connecting bar 31 have a constant proportional relationship. ing.

After setting the pointer of the indicator 33 to the "0" position of the scale 34 and setting the cutting amount of the work material 2, the work material 2 is once removed from the base 1 and the rotary knife is used. The part 10 is pushed down, and the pointer of the indicator 33 is adjusted to the numerical value of the cutting amount H to be given to the work material 2. After setting, the cutting adjustment bolt 17 is moved so that the lower end 17a of the cutting adjustment bolt 17 is brought into contact with the upper surface of the protrusion 6c, and the cutting adjustment bolt 17 is fixed with the wing nut 18. The amount setting is complete.

After setting the lower limit position, the rotary cutting tool portion 10 is once returned upward, and the work material 2 is placed on the base 1. When the rotary blade part 10 is pushed down again, the pin 32 will move to the upper cover 1
While moving in the guide portion 14e and the guide groove 29a of 4,
Similar to the above-described embodiment, the indicator holder 29 is moved while keeping the descending amount of the rotary cutting tool 10 and the ascending amount of the indicator holder 29 in a constant proportional relationship, and the scale of the scale 34 indicated by the indicator 33 is taken as the current cutting amount. indicate.

When the position of the set cutting depth H is reached, the cutting adjustment bolt 17 comes into contact with the upper surface of the projecting portion 6c, and the lower limit position of the rotary blade portion 10 is restricted. Hereinafter, the grooving work is performed by the same operation as the above cutting.

[0032]

According to the present invention, even if the outer diameter of a rotary blade such as a saw blade or a grooving cutter is different, it is possible to display the depth of cut for the work material, and a scale for displaying the depth of cut. By using, it is possible to easily set the cut amount of the work material.

[Brief description of drawings]

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

FIG. 2 is a right side view, partly in section, showing a cut setting operation.

FIG. 3 is a right side view.

FIG. 4 is an enlarged view around an indicator holder and a scale holder.

5 is a cross-sectional view taken along line I-I of FIG.

FIG. 6 is an overall left side view of the tabletop cutting machine.

FIG. 7 is an enlarged view of the scale and the periphery of the indicator of FIG.

FIG. 8 is an enlarged view of the scale and the vicinity of the indicator in FIG.

FIG. 9 is a right side view of a partial cross section of a tabletop cutting machine showing another embodiment.

FIG. 10 is a right side view, partly in section, of a tabletop cutting machine showing a second embodiment.

11 is a sectional view taken along line II-II of FIG.

FIG. 12 is a left side view of a tabletop cutting machine showing a conventional example.

FIG. 13 is a left side view of a tabletop cutting machine showing a conventional example.

[Explanation of symbols]

6 ... Rotary knife part holder, 6a ... Side surface, 6b, 6c ... Projection part, 10 ... Rotary knife part, 12 ... Saw blade (rotary knife), 1
3 ... Grooving cutter (rotary blade), 14 ... Top cover, 1
4a, 14b, 14c, 14d ... elongated hole portion, 14e ... guide portion, 16 ... indicator guide (arm member), 16
a, 16b ... Abutting surface, 17 ... Cut adjustment bolt (cut adjustment member), 17a ... Lower end, 20, 29 ... Indicator holder, 20a, 29a ... Guide groove 21, 30 ... Scale holder, 22, 33 ... Indicator, 24, 34 ... Scale, 26 ... Spring (position holding member), 27, 3
2 ... Pin, 28 ... Spring (elastic member), 31 ... Connection bar, H indicates the amount of cut into the work material.

Claims (9)

[Claims] 1. A support means is provided at the rear of a base for supporting a work material, the support means is positioned above the base, and can swing vertically with respect to the base and move back and forth in parallel with the upper surface of the base. In a tabletop cutting machine equipped with a rotary blade part, a long hole portion is provided in parallel with the rotary blade part, a scale holder having a scale on one long hole portion, and a scale on the scale holder is indicated on the other long hole portion. Indicator holders each having a pointer for sliding are provided slidably, and the scale holder is held by the position holding means in an elongated hole portion at an arbitrary position, and can be vertically swung with respect to the supporting means and can abut against the supporting means. The arm member is arranged at any position, the pin provided at the tip of the arm member is loosely fitted in the guide groove formed in the indicator holder, and the pin is moved in the guide groove by the swing of the rotary blade part. In A cutting depth setting device for a tabletop cutting machine, characterized by moving the indicator holder. 2. A cutting adjustment member for contacting the arm member at a desired swing lower limit position of the rotary blade portion to regulate the swing lower limit position of the rotary blade portion is provided on the rotary blade portion. The cutting amount setting device of the tabletop cutting machine according to claim 1. 3. The cutting amount setting device for a table-top cutting machine according to claim 2, further comprising an elastic member for urging the arm member so as to always contact the cutting adjustment member. 4. A cutting adjustment member is provided on the rotary blade part so as to contact the supporting means at a desired lower swing position of the rotary blade part to regulate the lower swing limit position of the rotary blade part. Item 1. A cutting amount setting device for a tabletop cutting machine according to Item 1. 5. When the pin moves in the guide groove to move the indicator holder, the swing change amount of the rotary blade part and the movement change amount of the indicator holder are kept in the guide groove in a constant proportional relationship. The cutting amount setting device of the tabletop cutting machine according to claim 1, wherein the cutting amount setting device has a shape. 6. The arc-shaped groove formed at the center point different from the swing fulcrum of the rotary blade part, and the slot from the swing fulcrum of the rotary blade part to the upper and lower limits of the slot. 6. The cutting amount setting device for a tabletop cutting machine according to claim 1, wherein the distance gradually changes. 7. A support means is provided at the rear of a base for supporting a work material, the support means is positioned above the base, swings vertically with respect to the base, and moves back and forth in parallel with the upper surface of the base. In a table-top cutting machine equipped with a freely rotatable blade portion, a long hole portion is provided in parallel with the rotary blade portion, a scale holder having a cut amount scale in one long hole portion, and the scale holder in the other long hole portion. Indicator holders each having a pointer for indicating the scale of the scale holder are slidably provided, and the scale holders are held by the position holding means in the elongated holes at arbitrary positions, and the connecting bars are pivotally supported by the supporting means so as to be vertically swingable. Then, a guide portion is formed on the rotary blade portion, and the pin provided at the tip of the arm member is loosely fitted in the guide groove of the guide holder and the indicator holder. Setting device. 8. When the pin moves in the guide portion and the guide groove by the swing of the rotary blade portion to move the indicator holder, the guide portion and the guide groove that follow the movement trajectory of the pin are in the rotary blade portion. 8. The cutting amount setting device for a table-top cutting machine according to claim 7, wherein the amount of change in the swing of the rotary cutting tool portion and the amount of change in the movement of the indicator holder are kept in a constant proportional relationship. . 9. The cutting tool is provided with a cutting adjustment member that abuts against the supporting means at a desired lower limit position of the swing of the rotary cutter to regulate the lower limit position of swing of the rotary cutter. Item 7. A cutting depth setting device for a tabletop cutting machine according to item 7 or 8.