JPH081433A - Method and device for grooving cutting by circular saw - Google Patents

Abstract

PURPOSE:To provide a finely machined surface by lowering a circular saw to a non-cutting position for each cutting and grooving operation, and returning it to the travel starting point so as to prevent the circular saw from rubbing again on the cut and grooved surface of a work. CONSTITUTION:The tip part of a work W on a table 1 is end-cut by advancing a circular saw at the cutting position CP from the travel starting point. Afler the end-cutting, the circular saw 12 is lowered to the non-cutting position NP, and retracted to the travel starting point, and the work W is fed at the constant rate. By advancing the work W in the condition where the circular saw 12 is elevated from the non-cutting position NP to the grooving position GP, the work W is grooved to the prescribed depth. Following this grooving operation, the circular saw 12 is lowered to the non-cutting position NP, and retracted to the travel starting point, and the work W is fed at the constant rate to repeat the process from the grooving to the constant feeding a plurality of times to provide a plurality of grooves on the work W at the prescribed interval.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a grooving / cutting method and apparatus for grooving and cutting a work by a traveling circular saw, for example, for manufacturing a heat sink material (fin of heat exchanger). Used for.

[0002]

2. Description of the Related Art A conventional traveling circular saw machine is one in which a work is placed and fixed on a table, and this work is cut and processed by a circular saw that projects and travels from a saw traveling slit of the table. , The circular saw can move up and down with respect to the table, but there are two positions, a cutting position where the blade tip projects from the upper surface of the work placed on the table by an appropriate amount and a non-cutting position where the blade tip is immersed in the table. Since it is only retained, it has not been possible to perform grooving with this type of circular saw machine. Therefore, since the grooved material such as the heat sink material is manufactured by casting exclusively, the manufacturing cost is very high.

It is an object of the present invention to provide a grooving / cutting method and apparatus capable of grooving other than cutting by using a traveling circular saw.

[0004]

According to a first aspect of the present invention, there is provided a groove sawing and cutting method which is a circular saw 12 which is movable in the front-rear direction of a table 1 and can be raised and lowered with respect to the table 1. A cutting position CP that protrudes from the upper surface of the work W placed on the table 1 by a predetermined amount, a non-cutting position NP that sinks in the table 1, and a protruding position α from the upper surface of the table 1 from the upper surface of the work W on the table 1. Also, a circular saw 12 that can be held at a groove cutting position GP that is lower than the predetermined amount β is used, and the workpiece W on the table 1 is end-cut by advancing the circular saw 12 at the cutting position CP. Circular saw 1
2 is lowered to the non-cutting position NP and retracted, the work W is fed at a constant size, and then the circular saw 12 is raised to the grooving position GP and moved forward to cut the work W to a predetermined depth. After machining, the circular saw 12 is lowered to the non-cutting position NP and retracted, and the work W is fed at a constant size, and the steps from the grooving to the constant feed are repeated a plurality of times to make a plurality of the work W. After arranging the grooves G at a predetermined interval, the circular saw 12 is raised to the cutting position CP and moved forward to cut the work W into a predetermined length L.

A grooving / cutting device according to a second aspect of the present invention is a circular saw 12 which can travel in the front-back direction of the table 1 and can be moved up and down with respect to the table 1. The work W is fixed to the table 1 and the work W is held on the table. 1 is provided with a means 32 for feeding the circular saw 12 in a direction orthogonal to the traveling direction of the circular saw 12, and the circular saw 12 has a work W whose cutting edge is placed on the table 1.
A predetermined amount α protruding from the upper surface of the table 1, a non-cutting position NP immersed in the table 1, and a predetermined amount β protruding from the upper surface of the table 1 but higher than the upper surface of the work W on the table 1.
It is provided so that it can be held at the lower groove cutting position GP.

In the groove cutting and cutting apparatus according to the third aspect, a movable base 3 which is movable in the front-rear direction is provided below the table 1, and the movable base 3 is vertically movable around the pivotal portion 11 at one end. A swing arm 6 which is swingable and has a circular saw 12 rotatably mounted on its free end, and an swing arm 6 which is interlockingly connected to this arm 6 and which cuts the circular saw 12 through a cutting position CP,
A fluid pressure cylinder 8 for raising and lowering the non-cutting position NP and the groove cutting position GP respectively, and an upright screw shaft 7 which can be rotated are arranged, and a stopper block 20 is axially mounted on the upright screw shaft 7. A cutting position setting stopper piece that is screwed so that it can move only up and down, and that an abutment piece 16 integrally provided on the free end portion of the swing arm 6 abuts from below at the cutting position CP on the stopper block 20. 26,
At the groove cutting position GP, the contact piece 16 comes into contact from below and a groove cutting position setting stopper piece 27 that can move forward and backward with respect to the contact portion is provided.

In the groove cutting and processing apparatus according to the fourth aspect, a compression coil spring 37 for removing backlash is interposed between the stopper block 20 and the upright screw shaft 7 with which the block 20 is screwed. It is a thing.

[0008]

According to the present invention, the tip of the work W on the table 1 is cut off by advancing the circular saw 12 from its starting point at the cutting position CP. After the end cutting process, the circular saw 12 is lowered to the non-cutting position NP, retracted to the running start point, and the work W is fed at a constant size. Then, the circular saw 12 is advanced from the non-cutting position NP to the grooving position GP while being advanced, so that the work W is grooved to a predetermined depth. Following this grooving,
The circular saw 12 is lowered to the non-cutting position NP to be retracted to the starting point of travel, and the work W is fed at a constant size. Are provided with a plurality of grooves G at predetermined intervals. After that, by raising the circular saw 12 to the cutting position CP and advancing it, the rear end side of the work W is cut,
It is possible to form a grooved member having a predetermined length L in which a plurality of grooves G are provided.

[0009]

EXAMPLES Examples will be described with reference to the drawings.
1 to 4 showing the groove cutting device of the present invention, 1
Is a table on which the work W is placed. The table 1 is provided with a saw traveling slit 2 extending in the front-rear direction. A moving base 3 is movable under the table 1 in the longitudinal direction of the saw traveling slit 2. The moving base 3 is guided by a guide rail 4 and is moved by a fluid pressure cylinder 5 for driving the base for a predetermined stroke. You can move.

The moving base 3 is equipped with a swing arm 6, an upright screw shaft 7, a fluid pressure cylinder 8 for driving the arm, a motor 9 for driving a circular saw rotation, and the like. The swing arm 6 is
One end thereof is pivotally attached to a bearing base 10 provided at the rear end of the moving base 3 by a pivot shaft 11, and the fluid pressure cylinder 7 expands and contracts to swing vertically around the pivot shaft 11. can do. A circular saw 12 is rotatably supported at the free end of the swing arm 6, and the circular saw 12 is rotationally driven by transmitting the rotation of the motor 8 to a saw rotary shaft 14 by a timing belt 13. At the same time, the vertical movement of the swing arm 6 caused by the expansion and contraction of the fluid pressure cylinder 8 raises and lowers the workpiece, and the cutting edge of the circular saw 12 of the workpiece W placed on the table 1 is moved by the fluid pressure cylinder 8. A cutting position CP that projects a predetermined amount α from the upper surface, a non-cutting position NP that sinks into the table 1, and a groove cutting position that projects from the upper surface of the table 1 but is lower than the upper surface of the work W on the table 1 by a predetermined amount β. It is designed to be held by the GP. Further, a bracket 15 is provided so as to project from the free end of the swing arm 6, and a roller-shaped contact piece 16 is axially attached to the tip of the bracket 15.

As shown in FIGS. 1 and 2, the upright screw shaft 7
Is rotatably supported by upper and lower horizontal frames 18 and 19 of a support frame 17 provided upright on the front end side of the moving base 3, and a stopper block 20 is screwed to the upright screw shaft 7.
In the stopper block 20, the engagement protrusions 20 a formed on both side surfaces of the stopper block 20 are provided on both vertical frames 21 of the support frame 17.
Engagement groove portions 21 a formed in 21 are engaged with each other so as to be vertically slidable. Further, a bevel gear 22 is fixed to a lower end shaft portion 7 a of the upright screw shaft 7, and a bevel gear 23 screwed to the bevel gear 22 is a rotary shaft 24 having a handle 25.
It is stuck to. Therefore, when the rotary shaft 24 is rotated by the handle 25, the upright screw shaft 7 is rotated, and the rotation of the upright screw shaft 7 causes the stopper block 20 to move vertically in the non-rotating state.

The stopper block 20 is shown in FIGS.
As shown in FIG. 6, the contact piece 16 integral with the swing arm 6 comes into contact with the cutting position setting stopper piece 26 at the cutting position CP of the circular saw 12 from below and the contact piece 16 at the groove cutting position GP of the circular saw 12. The contact piece 16 abuts from below, and a groove cutting position setting stopper piece 27 that can move forward and backward with respect to the abutting portion is provided. The stopper position 26a on the lower surface of the cutting position setting stopper piece 26 is formed in a horizontal plane. Further, the groove cutting position setting stopper piece 27 is arranged below the cutting position setting stopper piece 26, and the advancing / retreating drive fluid pressure cylinder 28 installed in the stopper block 20 causes the contact piece 16 to contact the contact piece 16. It is possible to move back and forth to the contact area. That is, the cutting position setting stopper piece 26 advances to the contact portion of the contact piece 16 by the expansion operation of the fluid pressure cylinder 28, and retracts from the contact portion of the contact piece 16 by the contraction operation. In FIGS. 1 and 3, a state in which the stopper piece 27 has advanced to the contact portion of the contact piece 16 is shown by a solid line, and a state in which it is retracted is shown by a virtual line. The stopper surface 27a on the lower surface of the groove cutting position setting stopper piece 27 is also formed in a horizontal plane.

Further, as shown in FIGS. 1 and 3, the stopper block 20 has a cutting position detector 29 for detecting the cutting position CP of the circular saw 12 and a groove cutting position detector 30 for detecting the groove cutting position GP. Provided and these detectors 2
A non-cutting position detector 31 for detecting the non-cutting position NP of the circular saw 12 is provided on the support frame 17 side below the 9, 30. The position detectors 29, 30, 31 are, for example, proximity switches that operate in response to the contact pieces 16, and are circular saws that move up and down by the vertical swing of the swing arm 6 by the operation of the fluid pressure cylinder 8. When the cutting position detector 29 detects that the 12 has reached the cutting position CP, the operation of the fluid pressure cylinder 8 is stopped by the detection signal, and the circular saw 12 is held at the cutting position CP. When the groove cutting position detector 30 detects that the circular saw 12 has reached the groove cutting position GP, the operation of the fluid pressure cylinder 8 is stopped, the circular saw 12 is held at the position GP, and the non-cutting position is further maintained. When the non-cutting position detector 31 detects the arrival at the NP, the operation of the fluid pressure cylinder 8 is stopped and the circular saw 12 is held at the position NP.

On the right side of FIG. 4 (B), the work W is fixed to the table 1 and at the same time, as a means for feeding the work W along the table 1 in a direction orthogonal to the traveling direction of the circular saw 12, it is a work piece. The gripping and feeding device 32 is schematically shown. The work gripping and feeding device 32 has a well-known structure, and is arranged in a direction orthogonal to the traveling direction of the circular saw 12 and is rotatably connected to a motor (not shown).
3 has a moving frame 34 that can be moved only in the direction orthogonal to the circular saw traveling direction by rotation of the drive shaft 33. The moving frame 34 supports a work piece that is flush with the upper surface of the table 1. A table 35 and a gripper 36 that presses and holds the work W placed on the work support table 35 from above are provided. Therefore, the work W gripped and fixed by the gripper 36 can be fed to the table 1 side by a fixed amount by a predetermined feed amount by the movement of the moving frame 34 by the rotation of the rotary drive shaft 33.

Further, as shown in FIG. 3, a compression coil spring 37 for removing backlash is interposed between the upright screw shaft 7 and the stopper block 20 screwed to the upright screw shaft 7. That is, the stopper block 20 is provided with a hole portion 38 having a diameter larger than that of the screw hole portion 20a on the inner peripheral side of the lower portion thereof.
A compression coil spring 37 is fitted in the hole 38, and a nut member 39 supporting the lower end of the coil spring 37 is screwed onto the upright screw shaft 7. The outer diameter of the nut member 39 is smaller than that of the hole portion 38, and the nut member 39 and the stopper block 20 are inserted through a notch groove portion 40 provided at the lower end portion of the stopper block 20.
A fixing member 41 such as a screw fixed to the shaft is coupled so as to be relatively non-rotatable and relatively movable in the axial direction.

The compression coil spring 37 includes the nut member 3
By appropriately tightening 9, the pressing force acts on the stopper block 20 and the nut member 39 so as to separate them from each other in the axial direction. Therefore, the stopper block 2
0 indicates a state in which the backlash generated between the female screw of the screw hole portion 20a and the male screw of the upright screw shaft 7 has been removed, and is always in its fixed position without being displaced in the axial direction with respect to the upright screw shaft 7. Fixed. Thereby, the cutting position setting stopper piece 26 and the groove cutting position setting stopper piece 2
It is possible to prevent the position shift of No. 7 and always set the cutting position CP and the groove cutting position GP of the circular saw 12 accurately.

FIG. 5 shows the screw shaft locking means 42 provided at the lower end of the upright screw shaft 7. The screw shaft locking means 42 includes a fitting hole 43 that is fitted to the lower end shaft portion 7a of the upright screw shaft 7 in a relatively rotatable manner, and a split groove 44 that is formed in communication with the fitting hole 43.
The clamp member 45 includes a clamp member 45, a tightening screw rod 46 screwed into the clamp member 45 so as to pass through the split groove 44, and a handle 47 for rotating the screw rod 46. As shown in FIG. 5, one end side of the split groove 44 is fixed to a frame member 48 integral with the support frame 17.

Therefore, when the handle 47 is operated to rotate the tightening screw rod 46 in the tightening direction, the clamp member 45 clamps and fixes the lower end shaft portion 7a of the upright screw shaft 7 to rotate the upright screw shaft 7. It can be fixed to be impossible. Also, the cutting position CP
When it is necessary to move the stopper block 20 up and down in order to adjust the height of the groove cutting position GP, the tightening screw rod 46 is loosened and the split groove 44 of the clamp member 45 is opened. The lower end shaft portion 7a of 7 can be rotated with respect to the fitting hole 43, and the upright screw shaft 7 can be rotated.

Next, a grooving / cutting method using the grooving / cutting apparatus having the above-described structure will be described with reference to FIG.
A case of manufacturing the heat sink material M illustrated in FIG. 1 will be described with reference to FIGS. 1, 4A, 4B, and 6.

Prior to the processing, the upright screw shaft 7 is rotated by the handle 25 to move the stopper block 20 up and down as appropriate to thereby set the cutting position setting stopper piece 26.
And the groove cutting position setting stopper piece 27 is set to the cutting position CP and the groove cutting position GP required for the groove cutting cutting work of the workpiece W. In this case, the groove cutting position GP is a position where the cutting edge of the traveling circular saw 12 is lower than the upper surface of the work W by β, and therefore the length obtained by subtracting β from the thickness h of the work W as shown in FIG. The amount corresponds to the depth d of each groove G.
The groove width of each groove G is determined by the thickness t of the circular saw 12. The cutting position CP is a position where the blade edge of the circular saw 12 projects upward by α from the upper surface of the work W, but in this embodiment, the cutting position GP has an integral relationship with the groove cutting position GP, and the groove cutting position GP is set. As a result, the cutting position CP is determined at the same time. Since the non-cutting position NP only needs to be at a position where the traveling circular saw 12 does not cut the work W, it is not necessary to set an accurate position, and only the non-cutting position NP needs to be confirmed by the detector 31.

After setting the cutting position setting stopper piece 26 and the groove cutting position setting stopper piece 27 to the required cutting position CP and groove cutting position GP as described above, the upright screw shaft 7 is set by the screw shaft locking means 42. And the work W is placed on the table 1, and the work W is gripped and fixed by the work gripping and feeding device 32 in a state in which the tip portion of the work W is projected from the cutting position by an appropriate amount, and the groove cutting process is performed. Start.

First, the fluid pressure cylinder 28 for driving the stopper piece forward / backward is contracted to retract the groove cutting position setting stopper piece 27 from the position shown by the solid line in FIG. 1 to the position shown by the virtual line, and the circular saw 12 is moved. Is raised by the fluid pressure cylinder 8 and held at the cutting position CP. When the circular saw 12 is lifted, the contact piece 16 causes the cutting position setting stopper piece 2 to move.
Just before it abuts the lower surface 26a of 6, the cutting position detector 29
The cutting position CP is detected by and the operation of the fluid pressure cylinder 8 is stopped by the detection signal, whereby the circular saw 12
Is reliably held at the cutting position CP with the contact piece 16 in contact with the lower surface 26a of the stopper piece 26.

From the state where the circular saw 12 is held at the cutting position CP as described above, the moving base 3 is moved forward by the fluid pressure cylinder 5 for driving the base so that the circular saw 12 is moved to the position shown in FIGS. ) As shown in FIG. 4), the workpiece is moved forward from the starting point at the cutting position CP, whereby the tip portion of the work W is cut off to form the tip reference surface S of the seek tank material M as a product. Then, the fluid pressure cylinder 8 is contracted to lower the circular saw 12 via the swing arm 6. During this descent, the detector 31 detects the non-cutting position NP at a position where the contact piece 16 is close to the non-cutting position detector 31, and the fluid pressure cylinder 8 is stopped by this detection signal, and the circular saw 12
Is held at this non-cutting position NP.

After the circular saw 12 which has been subjected to the end cutting as described above is lowered to the non-cutting position NP again, the fluid pressure cylinder 5 causes the moving base 3 to retreat to its original position, and the work is gripped and fed. Work W by the device 32
Is fed by a predetermined amount T (saw blade thickness t + groove pitch p), and the fluid pressure cylinder 28 for driving the stopper forward / backward is also used.
To extend the groove and set the groove cutting position stopper piece 27.
Is advanced from the position indicated by the virtual line in FIG. 1 to the position indicated by the solid line. Then, when the fluid pressure cylinder 8 is extended and the swing arm 6 is moved upward, the groove cutting position detector 30 is set just before the contact piece 16 contacts the lower surface 27a of the groove cutting position setting stopper piece 27. The groove cutting position GP is detected by and the operation of the fluid pressure cylinder 8 is stopped, whereby the circular saw 12 has the groove cutting position GP with the contact piece 16 in contact with the lower surface 27a of the stopper piece 27. Securely held in. From this state, the movable base 3 is moved forward, and the circular saw 12 is moved forward from the starting point at the groove cutting position GP, whereby the work W is subjected to groove cutting to form the first groove G. .

After forming the first groove G, the circular saw 12 is lowered to the non-cutting position NP, the moving base 3 is retracted to move the circular saw 12 backward to the starting point, and the work gripping and feeding device 32 is also provided. The work W is fed by a predetermined amount T by a fixed size. Then, the circular saw 12 at the non-cutting position NP
Is raised again to the cutting position CP and is held at that position CP, and from this state, the moving base 3 is moved forward and the circular saw 12 is moved forward to perform the grooving of the work W again. The second groove G is formed. Thereafter, the same steps as described above are repeated to form the required number of grooves G in the work W at predetermined intervals T.

After forming the final groove G and lowering the circular saw 12 to the non-cutting position NP, the circular saw 12 is retracted to the starting point of the traveling, the workpiece W is fed at a constant size, and the stopper forward / backward drive hydraulic cylinder 28 is used. Grooving position setting stopper piece 2
7 is retracted from the position shown by the solid line in FIG. 1 to the position shown by the virtual line. From this state, the circular saw 12 is raised to the cutting position CP and held at the cutting position CP, and the circular saw 12 at the cutting position CP is moved forward from the starting point to move the work W by a predetermined length. It cut | disconnects in L and forms the heat sink material M as shown in FIG.

When the work W is cut into a predetermined length L and one heat sink material M is formed, the circular saw 12 is lowered to the non-cutting position NP, and the circular saw 12 is retracted to the starting point of traveling. At the same time, the gripping of the work W by the work gripping and feeding device 32 is released, and the work gripping and feeding device 32 is retracted by the length of the heat sink material M to prepare for the next heat sink material M. When a plurality of heat sink materials M are continuously manufactured with the same work W, 2
For the heat sink material M after the first piece, the above-mentioned end cutting processing is unnecessary.

As described above, in this grooving / cutting process, the circular saw 12 descends to the non-cutting position NP inside the table 1 and retreats to the starting point of travel each time the cutting and grooving processes are performed. As a result, the saw blade does not rub the cutting surface and the grooving surface of the work W again, so that the processing surface can be kept beautiful and
The life of the saw blade can be extended.

[0029]

According to the grooving / cutting method of the first aspect, the traveling circular saw is held at each of the cutting position, the non-cutting position and the grooving position, and the same workpiece is cut. In addition to this, you can also perform grooving,
A grooved member having a predetermined length and having a plurality of grooves, such as a heat sink material, can be easily and easily manufactured. Also,
According to this method, the circular saw descends to the non-cutting position for each cutting and grooving process and returns to the starting point of travel, so that the saw blade does not rub the cutting and grooving surface of the workpiece again, which is beautiful. It is possible to maintain a good processing surface and extend the life of the saw blade.

According to the grooving / cutting apparatus of the second aspect, it is possible to perform both cutting and grooving on the same workpiece, and it is also possible to perform only cutting or only grooving.

According to the grooving / cutting apparatus of the third aspect, the cutting position and the grooving position can be set easily and surely.

According to the grooving / cutting apparatus of the fourth aspect, the backlash generated between the female screw on the stopper block side and the male screw on the upright screw shaft side is removed, and the stopper piece for direct cutting position setting and grooving. It is possible to prevent the positional shift of the position setting stopper piece and always set the cutting position and the groove cutting position of the circular saw accurately.

[Brief description of drawings]

FIG. 1 is a partial cross-sectional side view showing an embodiment of a groove cutting and processing apparatus according to the present invention.

FIG. 2 is a sectional view taken along line XX of FIG.

FIG. 3 is an enlarged sectional view of a stopper block portion.

FIG. 4A is a schematic side view of a groove cutting and processing apparatus according to the present invention, and FIG. 4B is a schematic vertical sectional view thereof.

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

FIG. 6 is a cross-sectional view of a heat sink material manufactured by the groove cutting processing device of the present invention.

[Explanation of symbols]

 1 Table 2 Saw Slit 3 Moving Base 5 Fluid Cylinder for Base Drive 6 Swing Arm 7 Upright Screw Shaft 8 Fluid Cylinder for Arm Drive 9 Motor for Circular Saw Rotation Drive 11 Pivot Shaft (Pivot) ) 12 circular saw 14 saw rotary shaft 16 abutment piece 17 support frame 20 stopper block 26 cutting position setting stopper piece 27 groove cutting position setting stopper piece 28 stopper hydraulic fluid cylinder for moving forward and backward 29 cutting position detector 30 groove Cutting position detector 31 Non-cutting position detector 32 Work gripping feeding device (constant size feeding means) 37 Compression coil spring CP Cutting position of circular saw NP Non-cutting position of circular saw GP Grooving position of circular saw

Claims (4)

[Claims] 1. A circular saw capable of traveling in the front-rear direction of a table and capable of moving up and down with respect to the table, wherein a cutting position in which the blade tip projects a predetermined amount from the upper surface of a work placed on the table, and a cutting position inside the table. Use a circular saw that can be held at both the non-cutting position where it immerses and the groove cutting position that protrudes from the table top surface but is lower than the work top surface on the table by a certain amount, and advance this circular saw at the cutting position. After end cutting the work on the table by the above, the circular saw is lowered to the non-cutting position to retreat, the work is fed at a constant size, and then the circular saw is raised to the groove cutting position to move forward. Groove the workpiece to a predetermined depth, then lower the circular saw to the non-cutting position and move it backward, feed the workpiece at a fixed size, and repeat the steps from the groove cutting to the fixed size feed multiple times. After arranging a plurality of grooves on the work at a predetermined interval, the work is cut to a predetermined length by raising the circular saw to a cutting position and advancing it. Processing method. 2. A circular saw capable of traveling in the front-back direction of a table and capable of moving up and down with respect to the table, and fixing a work to the table and sizing the work along the table in a direction orthogonal to the traveling direction of the circular saw. The circular saw has a cutting position in which the cutting edge projects a predetermined amount from the upper surface of the work placed on the table, a non-cutting position in which the cutting edge is recessed in the table, and the circular saw that projects from the upper surface of the table. And a groove cutting position which is lower than the upper surface of the work by a predetermined amount so as to be held respectively. 3. A movable base that is movable in the front-rear direction is provided below the table, and the movable base is swingable in the up-down direction about a pivotal end, and a circular saw is rotationally driven at a free end. A swingable arm that can be mounted, a hydraulic cylinder that is linked to this arm and that holds the circular saw up and down in the cutting position, non-cutting position, and groove cutting position through this arm, and an upright screw that can be rotated. And a stopper block is screwed onto the upright screw shaft so as to be vertically movable only along the axial direction, and the stopper block has a contact piece integrally provided at the free end of the swing arm. A cutting position setting stopper piece that abuts from below at the cutting position, and a groove cutting position setting stopper piece that abuts the abutting piece from below at the groove cutting position and that can advance and retreat with respect to the abutting portion. Please provide Grooving cutting device according to claim 2, characterized in that. 4. The groove cutting according to claim 3, wherein a compression coil spring for removing backlash is interposed between the stopper block and the upright screw shaft with which the block is screwed. Cutting processing equipment.