JP4473782B2 - Work fixing device and work fixing method for circular saw cutter - Google Patents

Description

The present invention, workpiece fixing device for circular saw cutting machine for cutting a flat bar with a circular saw which rotates, and a work fixing method according to the workpiece fixing device for a circular saw cutting machine.

As a conventional circular saw cutter, as shown in FIG. 6 , a circular saw cutter 40 using a high-speed circular saw is known. This circular saw cutting machine 40 cuts a small-diameter round or square steel material whose work is a circular saw 42 rotated by a motor 41 by pushing down a handle 43. This circular saw cutting machine 40 is easy to handle when cutting a small-diameter workpiece W, has a good work efficiency, has a simple structure, and is low in the cost of the apparatus. There was a problem that the workpiece W could not be cut (see Patent Document 1).

Therefore, as shown in FIG. 7 , a yarn saw cutting machine 50 using a band saw 53 is used. The yarn saw cutting machine 50 can cut a wide flat steel workpiece W placed on a table 54 by winding a band saw 53 around two rotating disks 51 and 52. Since this yarn saw cutting machine 50 is a vertical band saw, the size of one machine is not so large, and there is an advantage that a wide flat steel can be cut (see Patent Document 1).
JP 2000-117533 A (see paragraph [0002], FIG. 9 and FIG. 11)

However, even if the above-described yarn saw cutting machine 50 can cut a wide flat steel workpiece W with the band saw 53, since the band saw 53 undulates on the cut surface, an accurate cutting dimension cannot be obtained, and the next step In the milling process, there was a problem that the cut surface had to be processed again.
Furthermore, since the efficiency is poor and the cutting work takes time, there is a problem that a large floor space must be secured because it is necessary to use four or five by holding one by one. In addition, since there is no circular saw cutting machine that uses flat steel as a dedicated work, there has not yet been disclosed a work fixing device and a work fixing method for a circular saw cutting machine for fixing flat steel works in multiple stages. I found that there was no.

Therefore, the present invention has been developed to solve these problems. The work can be stacked, firmly fixed, and the work can be cut into an accurate dimension. able milling is omitted, further workpiece fixing device for circular saw cutting machine can replace four or five of the jigsaw cutting machine to one, and, and to provide a word over click fixing method.

The invention of the work fixing device for a circular saw cutter according to claim 1 is characterized in that a bed (1) and a guide rail (1e, 1f) are provided on the bed (1), and the X axis is perpendicular to the work supply direction. A shaft of the main shaft (2) provided with a head moving means for reciprocating the head (5) in the direction and a circular saw ( 3 ) placed on the guide rails (1e, 1f) and cutting the workpiece (W) the Z-axis direction in the direction, along with the main shaft (2) is rotatably supported, said head motor for rotating the circular saw (3) (4) is placed on the top (1 g) (5) When positioned below the left side of the head (5), a work supply device for supplying the workpiece (W) to the cutting position in the Z-axis direction (S) and (30),
A head speed control means for controlling the horizontal movement speed of said head (5), supplying the workpiece supply device said workpiece (W) in (30) and the workpiece speed control means for servo control, from the workpiece supply device (30) has been said and workpiece workpiece fixing device for fixing by (W) cutting position (S) (20), provided with, a workpiece (W) is a circular saw cutting machine to flat steel stacking (10), In the workpiece fixing device (20), a first clamper (21a) and a second clamper (21b) are movably provided to face the width (left-right) direction of the workpiece (W) so that the workpiece (W) can be moved. The thickness (vertical) direction of the workpiece (W) is fixed to or released from the first clamper claw (22a) movably provided on the first clamper (21a) and the first clamper claw (22a). Opposite the first clamper 21a), a second clamper claw (22b) movably provided on the second clamper (21b), and the second clamper claw (22b) facing the second clamper claw (22b). A second fixing claw 23b provided on the second clamper (21b), the first clamper claw (22a) and the first fixing claw 23a, and the second clamper claw (22b) and the second fixing claw. The workpiece (W) is grasped or released between the claws 23b .

In the invention according to claim 2, the first clamper (21a) and the second clamper (21b) are movably provided facing the width (left-right) direction of the work (W) to fix the work (W) or The workpiece (W) has a thickness (vertical) direction facing the first clamper claw (22a) movably provided on the first clamper (21a) and the first clamper claw (22a). A first fixed claw 23a provided on the second clamper, a second clamper claw (22b) provided movably on the second clamper (21b), and a second clamp claw provided on the second clamper claw (22b). 2 fixed claws 23b, and the workpiece (W) between the first clamper claws (22a) and the first fixed claws 23a, and between the second clamper claws (22b) and the second fixed claws 23b. Characterized by gripping or releasing A wherein a work fixing method for fixing a workpiece (W) by the workpiece fixing device for sawing machines (10) (20),
Scissors to face the workpiece (W) is Stacking of flat steel, first of the said first clamper and (21a) a second clamper (21b) is fixed by sandwiching the width direction of the workpiece (W) step and said first clamper (21a) arranged the first clamper pawl in the second clamper claw (22b) which is arranged (22a) and said second clamper (21b) in the said workpiece (W) with gripping the upper surface of the workpiece (W) thickness (vertical) moves in the direction, wherein each of said first fixing tooth (23a) and the second fixing claw for gripping the lower surface of the workpiece (W) (23b ) and by, characterized in that it comprises a second step of gripping the workpiece (W).

  According to the first aspect of the invention, since the workpiece supply device by servo control and the workpiece fixing device that firmly fixes from both sides can cut a clean finished surface with accurate dimensions, the milling of the workpiece cutting location in the next process Processing can be omitted. In addition, since six workpieces can be stacked and cut together, six yarn saw cutting machines can be replaced with one.

Moreover, since the workpiece | work W can respond to many kinds, such as the difference in the width of a flat bar, the difference in thickness, by limiting to the flat bar of a multistage stack, productivity can be raised by a multistage stack.

Further, a first clamper 21a and a second clamper 21b are movably provided on both sides in the width (left and right) direction of the workpiece W, and in the thickness (up and down) direction, the first clamper claw 22a, Since the second clamper claw 22b is movably provided on the second clamper 21b, the first clamper claws 22a and 22b are opened, and when the clampers 21a and 21b are opened, the work is performed by these two operations. Since the ear cut off by the first cutting of W, that is, even a small piece can be kept in a parallel state, it can be reliably dropped onto the lower chute.

According to the invention which concerns on Claim 2 , the width | variety (left-right) direction of the workpiece | work W is fixed from both sides, and the thickness (up-and-down) direction is fixed from both sides, the workpiece | work made into the multistage stack of the unprecedented flat steel Because of this fixing method, various types of flat steel can be fixed, so a beautiful finished surface can be obtained, milling of the cut part in the next process can be omitted, and further, it can be fixed firmly, thus increasing productivity by six times. It is possible to provide a work fixing method for a circular saw cutter that can be pulled up.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a perspective view showing an overall view of the circular saw cutting machine of the present invention, and FIG. 2 is a right side view of FIG. As shown in FIG. 1, a circular saw cutter 10 is installed on the floor. The circular saw cutter 10 is arranged in an L shape by the main body 10a and the workpiece supply device 30 in plan view. A work fixing device 20 for fixing the work W is provided on the upper surface of the bed 1.
As shown in FIG. 2, the bed 1 is formed in an inverted L shape when viewed from the right side, and guide rails 1 b and 1 a (see FIG. 4) of the work fixing device 20 described later are provided on the upper left side of the bed 1. The guide rail 1e is disposed on the upper stage portion 1c of the bed 1, and the guide rail 1f is provided on the front surface portion 1d (right side surface in FIG. 2) of the bed 1.
As shown in FIGS. 1 and 2, the head speed control means for controlling the horizontal movement speed of the head 5 is performed by a hydraulic drive device including a hydraulic cylinder 7, and the horizontal movement speed of the head 5 is controlled in the X-axis direction. The head 5 reciprocates.
As shown in FIG. 1, a main shaft 2 is provided below the head 5, and the main shaft 2 is rotatably supported in the axial Z-axis direction. A circular saw 3 with a cemented carbide tip for cutting the workpiece W is provided at the tip of the main shaft 2. Further, a motor 4 for rotating the circular saw 3 is attached to the uppermost part 1 g of the head 5.

Work supply device 30, as shown in FIG. 2, the main body 10 a, is disposed in the L-type in plan view, of the workpiece fixing device 20 provided between the lower surface of the bed 1 top and the head 5 workpiece This is a device for supplying multi-stage stacked flat steel workpieces W to the cutting position S (see FIG. 3) by a predetermined size.

The workpiece fixing device 20 of the circular saw cutting machine 10 will be described.
3 is a plan view of the workpiece fixing device, FIG. 4 is a front view of the workpiece fixing device, and FIG. 5 is a view taken along the line BB of the workpiece fixing device shown in FIG.
As shown in FIG. 3, the workpiece fixing device 20 is configured so that a first clamper 21 a on the left side and a second clamper 21 b on the right side are opposed to each other with the workpiece W sandwiched therebetween. The left first clamper 21a is disposed on the guide rails 1a and 1a, and moves from left to right in the width direction of the workpiece W by driving the hydraulic first cylinder 25a.
The other second clamper 21b, the guide rail 1b, are arranged in 1b, the second sheet cylinder 25b of a hydraulic, driven by the 25b, moving from right is the width direction of the workpiece W to the left. Then, as shown in FIG. 4, the first pad 21c and the second pad 21d abut against the work W, and the work W is sandwiched and fixed from both sides.
In addition, by reversing the driving directions of the first and second cylinders 25a and 25b, the first and second clampers 21a and 21b are moved backward, so that the workpiece W by the first and second pads 21c and 21d is retreated. From the fixed state, the workpiece W can be opened.

Further, first and second clamper claws 22a and 22b are provided movably in the thickness (vertical) direction of the workpiece W. The first clamper claw 22a on the left side moves in the thickness (vertical) direction of the workpiece and grips the workpiece W by driving the first cylinder 24a. Similarly, the second clamper claw 22b on the right side moves in the thickness (vertical) direction of the workpiece by gripping the workpiece W by driving the second cylinder 24b, and fixes the workpiece W from the vertical direction.
Further, by reversing the driving directions of the first and second cylinders 24a and 24b, the first and second clamper claws 22a and 22b can be released from the work W being fixed. In this way, the workpiece fixing device is a system in which flat steels as the workpiece W are stacked in a multi-stage manner and the width direction and the thickness direction are fixed from both sides.

A work fixing method of the work fixing device 20 of the circular saw cutting machine 10 will be described.
When the workpiece W of the multi-stage stack is supplied to the cutting position S (see FIG. 3) of the circular saw cutting machine 10 by driving the workpiece supply device 30 as the previous process, the workpiece fixing device 20 comes into play. .
In the first step of the workpiece fixing device 20, the first clamper 21a and the second clamper 21b approach each other from the standby position in the width direction of the workpiece W with the multi-stage stacked flat steel ( work W ) interposed therebetween. To fix.
Subsequently, in the second step, the first clamper claw 22a disposed in the center of the first clamper 21a and the second clamper claw 22b disposed in the center of the second clamper 21b are lowered in the thickness (vertical) direction. Then, the multi-stage stacked flat bars are gripped and fixed by the first fixed claws 23a and the second fixed claws 23b.
This is a work fixing method of the work fixing device 20 of the circular saw cutting machine 10. After that, the circular saw 3 with carbide tips rotates and is sent by cutting feed by the hydraulic cylinder 7, and multi-stage stacked flat steel is formed. Disconnected.
After that, when the first and second clamper claws 22a and 22b are opened, the ears of the standard material that are cut off first become free in the width direction and the thickness direction, and the work feeding device 30 is driven for the second time. Thus, when the workpiece W is supplied, the cut ear can move while maintaining a parallel posture without changing its posture diagonally, so that the lower chute 1s (see FIG. (See 2).
This ear drop is made possible by releasing the fixed state in two directions.

Here, the operation of the circular saw cutting machine 10 will be described.
As shown in FIGS. 1 and 2, when the start button of the circular saw cutter 10 is pressed (the operation panel is a separate type, it is not shown), the flat steel placed on the carry-in conveyor 32b is transferred to the workpiece supply device. 30. The flat steel flat material is 6 m or 10 m. For example, the width × thickness of this flat steel is 300 mm × 12 mm, and the total thickness of the flat steel is 72 mm when it is stacked in six layers. This multi-stage stacked flat steel is conveyed to the cutting position of the circular saw cutting machine 10. The first cut-off begins with the action of dropping a small amount of, for example, about 10 to 15 mm of black-eared ears, just like the ear drop of bread. The workpiece fixing device 20 fixes the first and second clampers 21a and 21b close to each other in the width direction of the workpiece W with the workpiece W interposed therebetween.

Subsequently, the first clamper claw 22a disposed at the center in the first clamper 21a and the second clamper claw 22b disposed at the center in the second clamper 21b are driven by the first and second cylinders 24a, 24b. Then, the steel plates descend in the thickness direction, and the multi-stage stacked flat bars are fixed by the first and second fixing claws 23a and 23b.
When these operations are finished, the spindle motor 4 begins to rotate, is decelerated by a reduction gear configured in the head 5, and rotates a circular saw 3 with a cemented carbide tip fixed to the tip of the spindle 2 at 150 revolutions / min. Rotate with The peripheral speed is 100 to 300 m / min, which is about five times as fast as the conventional high speed. In addition, the diameter x thickness of the circular saw 3 with a cemented carbide chip is φ600 × 3.3 mm, and the number of blades is 80.
Then, the head 5 is sent in the X-axis direction by cutting feed, and the workpiece W is cut.
Subsequently, when the first and second clamper claws 22a and 22b are opened in the thickness direction and the first and second clampers 21a and 21b are opened in the width direction, the black skin cut at a width of 10 to 15 mm is obtained. The ear falls from the hole H shown in FIG. 3, is guided to the chute 1s shown in FIG.

As shown in FIGS. 2, 3, and 4, when the ear removal of the black skin is finished, the workpiece supply device 30 determines that the total length corresponding to the specified workpiece length and the thickness of the circular saw 3 is a circular saw. It is supplied to the cutting position S of the cutting machine 10.
In the work fixing device 20, the first and second clampers 21 a and 21 b are moved and fixed in the width direction of the work W with the multi-stage stacked flat steel works W interposed therebetween.
Similarly to the above, the first clamper claw 22a of the first clamper 21a and the second clamper claw 22b of the second clamper 21b are moved in the thickness direction by driving the first and second cylinders 24a and 24b. To fix the workpiece W.
The head 5 is sent in the X-axis direction by cutting feed, and the workpiece W is cut.
And if the 2nd clamper nail | claw 22b is open | released in the thickness direction and the 2nd clamper 21b is open | released in the width direction, the flat steel of the designated workpiece | work length will be sent out by the discharge conveyor 32c (refer the right end of FIG. 2). Discharged.
Then, these operations are repeated.
As a result, since the flat steel workpiece W is cut with accurate cutting dimensions and finished with a clean cutting surface, milling of the cutting portion can be omitted and four or five yarn saw cutters can be replaced with one. A circular saw cutting machine and its work fixing device, and a work fixing method for the circular saw cutting machine can be provided.

  The present invention can be variously modified and changed within the scope of the technical idea. For example, the driving method of the head 5 may be a servo motor and a ball screw or a linear motor instead of the hydraulic cylinder. Moreover, you may use a flat material.

It is a perspective view which shows the whole view of the circular saw cutting machine of this invention. It is a right view of A arrow shown in FIG. It is a top view of a workpiece fixing device. It is a front view of a workpiece fixing device. It is an arrow directional view of the BB line of the workpiece | work fixing device shown in FIG. It is a perspective view which shows the whole view of the circular saw cutting machine using the conventional high-speed circular saw . It is a perspective view which shows the whole view of the yarn saw cutting machine using the conventional band saw .

Explanation of symbols

1 bed 1a upper surface 1a, 1b, 1e, 1f guide rail 1c upper part 1d front part 1g uppermost part 1s chute 2 main shaft 3 circular saw 4 motor 5 head 6 cover 7 hydraulic cylinder 10 circular saw cutter 11, 12 box 20 work fixed Device 21a First clamper 21b Second clamper 21c First pad 21d Second pad 22a First clamper claw 22b Second clamper claw 22a Roller 23a First fixed claw 23b Second fixed claw 24a, 25a First cylinder 24b, 25b Second Cylinder 30 Workpiece supply device S Cutting position W Workpiece

Claims (2)

Bed (1),
A guide rail (1e, 1f) provided on the bed (1), and a head moving means for reciprocating the head (5) in the X-axis direction perpendicular to the workpiece supply direction;
The main shaft (2) is rotatable in the Z-axis direction of the main shaft (2) provided on the guide rail (1e, 1f) and provided with a circular saw ( 3 ) for cutting the workpiece (W). while being axially supported, the motor (4) for rotating the circular saw (3) and the head placed at the top (1 g) (5),
Located below the left side of the head (5), a work supply device for supplying the workpiece (W) to the cutting position in the Z-axis direction (S) and (30),
Head speed control means for controlling the horizontal movement speed of the head (5);
A work speed control means for said servo control the work (W) of the workpiece supply device (30),
The workpiece cutting position the supplied workpiece (W) from the supply device (30) and the workpiece fixing device for fixing with (S) (20), comprising a circular saw to the workpiece (W) and the flat steel Stacking a cutting machine (10),
In the workpiece fixing device (20), a first clamper (21a) and a second clamper (21b) are movably provided to face the width (left-right) direction of the workpiece (W) so that the workpiece (W) can be moved. Fixed or open,
The thickness (vertical) direction of the workpiece (W) is
A first clamper claw (22a) movably provided on the first clamper (21a);
A first fixed claw 23a provided on the first clamper (21a) opposite the first clamper claw (22a);
A second clamper claw (22b) movably provided on the second clamper (21b);
A second fixed claw 23b provided on the second clamper (21b) opposite the second clamper claw (22b);
With
The workpiece (W) is gripped or released between the first clamper claw (22a) and the first fixed claw 23a, and between the second clamper claw (22b) and the second fixed claw 23b. The workpiece fixing device (20) of the circular saw cutter (10). A first clamper (21a) and a second clamper (21b) are movably provided facing the width (left-right) direction of the workpiece (W) to fix or release the workpiece (W). The thickness (vertical) direction of the first clamper claw (22a) provided movably on the first clamper (21a) and the first fixed claw provided opposite to the first clamper claw (22a) 23a, a second clamper claw (22b) movably provided on the second clamper (21b), and a second fixed claw 23b provided to face the second clamper claw (22b). ,in front
Serial first clamper pawl (22a) and said first fixing tooth 23a, and a feature in that the gripping or releasing the workpiece (W) between said second clamper claw (22b) and said second fixing tooth 23b A workpiece fixing method for fixing the workpiece (W) by a workpiece fixing device (20) of a circular saw cutter (10) ,
Scissors to face the workpiece (W) is Stacking of flat steel, first of the said first clamper and (21a) a second clamper (21b) is fixed by sandwiching the width direction of the workpiece (W) Process,
The thickness of the first clamper (21a) arranged the first clamper pawl in (22a) and said second clamper second clamper pawl disposed within (21b) (22b) and said workpiece (W) ( up and down) to move in a direction with gripping the upper surface of the workpiece (W), by said each of said first fixing tooth (23a) and the second fixing claw for gripping the lower surface of the workpiece (W) (23b) A second step of gripping the workpiece (W);
Features and to Ruwa over click fixing method comprises a.

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