JP2003300201A - Cutting device of vertical traveling circular sawing machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cutting device of a traveling circular sawing machine capable of cutting without generating an overload and also with high precision by suppressing vibration during traveling. <P>SOLUTION: The cutting device cuts a work W by fixedly pressing the work W set on a horizontal ruler plate 4, on an almost perpendicular table 3 and moving a traveling circular saw 9 fitted to a cutting unit B in a vertical direction. A wire rope 24 is set in place by winding its one end around a wrapping drum 23 and hanging the other end downward. Further, the cutting unit B is connected to the hanging end of the wire rope 24, and the wrapping drum 23 is rotated normally and reversely by an electric motor 21. <P>COPYRIGHT: (C)2004,JPO

Description

Description: BACKGROUND OF THE INVENTION [0001] 1. Field of the Invention [0002] The present invention enables cutting to be performed while suppressing an excessive load, and suppresses vibration during traveling to perform cutting with high accuracy. The present invention relates to a vertical cutting circular sawing machine that can be performed. 2. Description of the Related Art As a machine for cutting a large-sized work material, there is a vertical running circular saw machine called a panel saw, which is widely used in various manufacturing industries. The configuration of the panel saw will be described together with the operation procedure with reference to FIGS. [0003] A horizontal ruler plate 51 provided under a table 55
After the workpiece W is supplied to the workpiece, the workpiece W is moved laterally, and the end face is abutted against the width determining ruler 53 to be positioned. Then, at this position, the circular saw 57 is pressed and fixed to the table 55 by the clamp means 54, and then the circular saw 57 is projected from the travel slit 56 and travels downward. With this, the work material W
Is cut in the vertical direction and divided into two parts. The above-mentioned machining operation is performed in the following cycle in consideration of safety. That is, the circular saw 57 stands by in a state of being immersed in the table 55, and is moved upward by the traveling moving means 58 from the standby position to a position corresponding to the height dimension of the workpiece W. After stopping at this position, it protrudes above the table 55 while rotating. After the circular saw 57 projects, the traveling moving means 58 is driven to rotate in reverse to move the circular saw 57 downward. The workpiece W on the table 55 can be cut by the movement of the circular saw. When the circular saw 57 reaches the lower end, the processing is completed, and the circular saw 57 is immersed in the table. At this time, since the clamp means 54 is opened, the operator can safely process the processed product. As described above, the conventional panel saw uses a circular saw 57.
The traveling drive means 58 includes a pair of sprockets 60 and 61 provided at the upper and lower ends of the traveling movement, and a loop-shaped chain 62 and The chain is composed of an electric motor 63 equipped with a speed reducer for rotating and driving the sprocket 61, and the chain 62 is connected to a cutting unit 64 having a circular saw 57. [0007] The above-mentioned conventional traveling drive means 58 always moves the circular saw 57 at a constant speed once the feed speed is determined, whereby the cutting process proceeds uniformly. I do. For this reason, when the circular saw 57 with reduced sharpness is used, or when a work material W having a large thickness is supplied by mistake, an overload occurs, and the processing accuracy is poor due to burning of the cut surface. There was a problem of causing damage. In the prior art, since the engagement between the chain 62 and the sprockets 60 and 61 during the traveling movement is intermittent and involves an impact, this is transmitted to the circular saw 57 via the cutting unit 64 as vibration. . Therefore, there is a problem that a knife mark appears on the cut surface of the workpiece W. In addition, the vibration is amplified in accordance with the movement of the cutting unit 64, and pulsation occurs at a constant period in the direction in which the chain is stretched. As a result, there is a problem that the accuracy of the cut surface is reduced. The present invention has been made in view of the above-mentioned problems of the prior art, and can perform cutting without causing overload, and eliminates vibration during traveling movement to achieve high precision. It is an object of the present invention to provide a traveling circular saw cutting machine capable of performing a cutting process. [0010] In order to achieve the above object, an apparatus for cutting a traveling circular saw board according to the present invention is configured as follows. That is, the point is that the work material on the horizontal ruler plate is pressed and fixed on a substantially vertical table, and the work material is cut by the vertical traveling movement of a circular saw provided in the cutting unit. In a vertical running circular sawing machine, a wire rope having one end wound around a winding drum and the other end hanging down is provided, and the wire rope is driven by an electric motor linked to the winding drum. In addition, the cutting unit is connected to the lower end of the wire rope. Since the cutting unit is held in a freely hanging state, in a normal state, cutting can be performed at the unwinding speed of the winding drive means. However, when the cutting load increases, the cutting operation is performed by automatically reducing the moving speed to the cutting load without depending on the unwinding speed. Further, the winding of the wire rope around the winding drum is performed smoothly and continuously without any impact. For this reason, cutting processing can be performed with high accuracy without generation of vibration. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of an apparatus for cutting a vertical traveling circular sawing machine according to the present invention will be described. FIG. 1 is a front view showing the overall structure, and FIG. 2 is a side view of the same, where A is a slightly inclined front frame 1 and a body frame 3 composed of a rear frame connected to the front frame 1. This table 3 is attached with a slight inclination (substantially vertically) as shown in FIG. Reference numeral 4 denotes a horizontal ruler plate disposed below the table 3. A flat mounting surface is formed on the upper surface of the horizontal ruler plate 4, and a plate-like workpiece W is erected on the mounting surface. Supply by 5 is a width ruler arranged so that it can be adjusted to move left and right with respect to the horizontal ruler plate 4.
It is perpendicular to the mounting surface described above. 6 is a table 3 supported on the rear frame 2
The rail main body 6 has an H-shaped cross-section and is provided in a vertical direction on the back side of the table. The rail main body 6 is provided in parallel with the table 3 at an appropriate interval. As shown in FIG. Provide. A cutting unit B described below is disposed on the guide rails 6a and 6b so as to be movable up and down. The cutting unit B includes guide rails 6a, 6
b, a moving base 7 slidably disposed on the moving base 7, a driving motor 8 mounted horizontally on the moving base 7, a circular saw 9 rotated by the driving motor 8, and a jumping means 10 for operating the circular saw 9 to and from the table 3. Each component is provided. A bearing cylinder 12 is provided on both side flanges of the drive motor 8 via a swingable arm member 11, and a circular saw 9 is attached to one end of a rotating shaft 12 supported by the bearing cylinder 11. Pulleys 14 and 16 are provided at the other end of the rotating shaft 12 and the output shaft 15 of the drive motor 8, respectively, and a belt 17 is stretched between them. The jumping means 10 is constituted by a pneumatic cylinder 19 having the cylinder cylinder side fixed to the moving base 7 and the piston rod side connected to the arm member 11. When the piston rod extends, the circular saw 9 moves the table 3
The circular saw 9 protrudes from the table 3 and retracts into the table 3 when contracting. The amount of protrusion of the circular saw 9 is set by a stopper screw 20. C designates the cutting unit B as the guide rail 6a,
Winding drive means traveling (moving up and down) along 6b
This winding driving means C is, as shown in FIG.
Electric motor 21 with a speed reducer disposed at the upper end of the drum, and a winding drum 2 fixedly mounted on an output shaft 22 of the electric motor 21
3. A wire rope 24 (see JIS G3525) having one end wound around the winding drum 23 and the other end hanging downward. The above-mentioned hanging lower end is fixed to the moving base 7 via the mounting bracket 25. Also, an electric motor 21 with a reduction gear
Is a reversible drive type, and the winding drum 2
The moving base 7 is moved up by winding the wire rope 24 around the moving base 3, and the wire rope 24 is unwound from the winding drum 23 at the time of reverse rotation, and the moving base 7 is moved down by its own weight. D is a clamp means for pressing and fixing the workpiece W on the horizontal ruler plate 4 to the table 3.
The pressing plate 30 disposed at the front corresponding to the traveling path of the circular saw 9 on the table 3, that is, the traveling slit 36,
The pressing plate 30 is constituted by an actuating means 31 for moving toward and away from the table 3 and a mounting frame 32 for holding the pressing plate 30. The pressing plate 30 is supported by a mounting frame 32 by a pair of upper and lower link arms 33,
The contact / separation operation is performed by a pneumatic cylinder 34 linked to the link arm 33. Reference numeral 35 denotes a switch operation panel provided with various operation switches such as an operation switch of the clamping means D and an operation switch of the winding drive means C. The construction of the vertical traveling circular sawing machine according to one embodiment is as described above. The cutting of the workpiece W is performed as follows. First, the workpiece W is supplied to the mounting surface of the horizontal ruler plate 4, and the workpiece W is abutted against the width determining ruler 5 to set a cutting position. Next, the clamping means D is operated to press and fix the workpiece W on the table 3. At this time, if the height position of the circular saw 9 is lower than the height dimension of the workpiece W, the circular saw 9 is moved up and set to an appropriate position. The above-mentioned height setting is performed by the operation switch of the switch operation panel 35.
The electric motor 21 is driven in the normal rotation direction. That is, when the winding drum 23 rotates forward, the wire rope 24 is wound up, so that the cutting unit B moves upward. When the height position of the circular saw 9 is set in this way, the circular saw 9 is controlled and moved by another operation switch. In this way, the circular saw 9 projects onto the table 3 while rotating, and the electric motor 21 subsequently rotates in the reverse direction. Since the wire rope 24 is unwound from the winding drum 23 by this operation, the cutting unit B moves downward. Since the cutting unit B has an appropriate weight, the downward movement and the unwinding are performed in synchronization and smoothly, and during this time, the work material W is cut by the circular saw 9. The above-mentioned cutting process is completed when the cutting unit B reaches the lower end of the movement. The machining end operation can be confirmed by a detection switch (not shown), and the output signal stops the electric motor 21,
Further, the circular saw 9 is immersed in the table 3. Thereafter, the electric motor 21 is driven to rotate forward, the cutting unit B moves upward, and the circular saw 9 is pulled up to the cutting start position. On the other hand, the table 3 of the circular saw 9
The clamp means D operates in the direction away from the table 3 as it enters the interior. As a result, the pressing plate 30 is opened to release the clamp of the workpiece W, so that the operator can safely process the cut product. The lowering speed of the cutting unit B by the electric motor, that is, the cutting processing speed, can be arbitrarily changed by, for example, attaching an inverter device to the electric motor 21. Thickness, material, etc.). However, on the contrary, when cutting is performed, the following operation is performed. For example, when working with a workpiece W having a load greater than the cutting capacity of the circular saw 9, the circular saw 9 only cuts the workpiece W with its ability and depends on the unwinding speed of the cutting unit B. do not do. That is, when the cutting load is large, the cutting process is automatically performed at a reduced speed. As a result, it is possible to perform a reasonable process, and it is possible to maintain good precision without causing burns on the cut surface. it can. In the above construction, the lifting operation of the cutting unit B is performed by the wire rope 24
And the operation is very smooth. For this reason, of course, no vibration is generated as well as an impact, and the deflection of the circular saw 9 due to this is not induced. In the above embodiment, the cutting unit B
Has an appropriate weight, and the cutting work is performed by applying the load. However, for example, when the electric motor is changed to a large-capacity motor, the weight becomes excessively large. In such a case,
A balance weight mechanism is provided to take measures to reduce the weight of the cutting unit. As described above, according to the cutting device for a traveling circular sawing machine according to the present invention, the cutting can be performed with high accuracy without causing overload, and the traveling circular sawing machine can be used during traveling movement. An excellent effect that cutting can be performed with high precision while suppressing vibration of the circular saw is exhibited.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front view showing an embodiment of a traveling circular saw cutting machine according to the present invention. FIG. 2 is also a side view. FIG. 3 is a plan view showing a configuration of a cutting unit. FIG. 4 is also a side view. FIG. 5 is an explanatory diagram showing a configuration of a winding drive unit. FIG. 6 is an explanatory view showing a configuration of a conventional vertical running circular sawing machine. FIG. 7 is also a side view. [Description of Signs] 3 Table 4 Horizontal ruler plate B Cutting unit 7 Moving base 8 Circular saw C Winding driving means 21 Electric motor 23 Winding drum 24 Wire rope D Clamping means 30 Pressing plate

Claims (1)

Claims 1. A work material on a horizontal ruler plate is pressed and fixed on a substantially vertical table, and the work material is cut by a traveling movement of a circular saw provided in a cutting unit in a vertical direction. In a vertical running circular sawing machine, a wire rope having one end wound around a winding drum and the other end hanging down is provided, and the wire rope is driven by an electric motor linked to the winding drum. A cutting device for a vertical traveling circular sawing machine, characterized in that a cutting unit is connected to the lower end of a wire rope.