JP2555604Y2 - Circular sawing machine clamping device - Google Patents

Description

[Detailed description of the invention]

[0001]

The present invention relates to a method for cutting a thick plate or square bar of metal such as aluminum or copper, and in particular, a method of cutting a material to be cut while fixing it on a table.
In other words, the present invention relates to a clamping device for a slicing circular sawing machine in which a rotating circular saw moves along a groove of a table, and when a cutting operation is prepared, a workpiece is horizontally placed on the table. In addition to the supply, the object is to be able to supply vertically downward from above the table.

[0002]

2. Description of the Related Art In a conventional metal-cut circular sawing machine, in order to fix a material to be cut such as a thick plate or a square material to a table, one side of the material to be cut is positioned with a ruler, and the material is positioned. A plurality of locations on the periphery of the cut material are fixed with threaded fasteners. In the case of a circular saw that cuts square materials and bars,
Both sides of the cutting portion are configured to be pressed by a pair of hydraulic cylinders and other pressing mechanisms. However, the work of fixing a plurality of locations on the periphery of the material to be cut to the table by means of threaded fasteners is troublesome together with the work of releasing the fixation. In addition, the pressing force at a position along the cutting point was insufficient. In order to use the above-mentioned threaded fastener, it is necessary to provide a large number of parallel inverted T-shaped grooves for positioning the fastener on the surface of the table, and to prepare many fasteners. Next, as a means that does not use a threaded fastener, so that the position along the side of the cutting location can be pressed,
It is conceivable to provide a fluid pressure cylinder in which the upper spar-shaped clamp member is arranged to be able to move up and down along the side of the cutting portion, and simultaneously pushes both ends of the spar-shaped clamp member. However, two fluid pressure cylinders are required, as in the case of the circular sawing machine for cutting the square bar and the bar. In the case of a narrow material to be cut, when the material is pressed below the center of the girder-shaped clamp member, the girder can be placed under a position close to one end of the girder-like clamp member (for example, on the ruler side). The clamp member tends to tilt or bend, and it is difficult to reliably hold the workpiece. In view of this, the present applicant has previously disclosed in Japanese Unexamined Utility Model Publication No. 2-114423 (Japanese Utility Model Application No. 24-5866) a method of fixing a material to be cut on a surface plate and cutting it. In view of the above-mentioned problems in the sawing machine clamping device, it is possible to move up and down along the side of the circular saw moving groove of the surfacen plate and supported by a pair of guide columns having both ends erected on the surfacen plate. A long girder clamp member is provided in the groove direction, and a piston rod of a fluid pressure cylinder vertically mounted on an over arm is provided at a position closer to the ruler side than the longitudinal center of the upper side of the girder clamp member. A device with a connected lower end is provided. This allows a single hydraulic cylinder to reliably clamp with a uniform pressure via the girder-shaped clamp member without giving any bending or tilting action to the clamp member, and also allows a wide cut material to have a wide width. The effect of reliably pressing and fixing even a narrow cut material has been obtained.

[0003]

However, the inventor of the present invention disclosed in Japanese Utility Model Application Laid-Open No. 2-114423 has a girder-shaped clamp fitted on a guide column which is fixed upright on a table via a column passing cylinder. Since the material to be cut is supplied to the bed, it can be supplied from the horizontal direction, but from above the table, it is not possible to supply the material to the table with the clamp obstructing. Can not. Therefore, even when the material to be cut is heavy, considerable labor and time are required to set it down from the horizontal direction in the space under the girder-shaped clamp while placing it on the bed.

[0004]

Means for Solving the Problems Accordingly, the present invention is based on a technical solution.
In order to achieve the object of the invention, the material to be cut can be supplied to the table surface from above the table so that the heavy material to be cut can be supplied safely and easily. . According to the present invention, in a clamp device for a saw-milled circular sawing machine, a base is erected and fixed at a position near an end in a forward direction of a circular saw moving groove opened on a table of a bed, and a horizontal support is provided on a top of the base. -A base member of the arm is rotatably mounted in a horizontal direction, and a clamp member having a circular saw storage groove is disposed at an end portion corresponding to the circular saw moving groove, and the clamp member is disposed on the horizontal arm and the hydraulic pressure is set. The clamp member is connected to a guide rod that is connected to a piston rod that hangs down from a cylinder, and that is fitted to the rod so as to be able to move up and down on a horizontal arm that is arranged at an appropriate distance from the cylinder. .

[0005]

The operation based on the above means is as follows. First, at the time of cutting, when the piston rod of the fluid pressure cylinder of the horizontal arm, which is arranged so as to match the circular saw movement groove of the table, is retracted, the clamp member is raised while maintaining the horizontal state. Then, the horizontal arm is rotated by 90 degrees or more together with the clamp member and stopped at a position off the table surface. In this state, the heavy material to be cut is lowered onto the table using a lifting machine such as a ceiling crane or a forklift car and set at a predetermined position. Next, after releasing the fixation, the horizontal arm is rotated to return to the original position and stopped and fixed, and then, when the hydraulic cylinder of the horizontal arm is operated, the piston rod moves forward. The clamp member descends to press and fix the material to be cut on the table. Subsequently, when the circular saw is rotated and fed, the circular saw moves in the moving groove, and the material to be cut is cut. Then, when approaching the final end, the portion of the circular tooth protruding from the material to be cut travels in a state in which it is stored in the downward groove of the cross section.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a front view of a slicing circular saw having a clamp device according to the present invention, FIG. 2 is a plan view of FIG. 1, and FIG. 3 is a left side view of FIG. In the figure, 1 is a box-shaped bed, 2 is a square table located on the upper part of the box-shaped bed 1, 3 is a table 2
Is a ruler provided along the left side of the table, 4 is a moving groove for circular saw drilled on the table 2, 5 is a base column fixed at a position near the end of the circular shape of the moving groove in the forward direction, and 6 is a base. A horizontal arm in which a base 61 is rotatably mounted in the horizontal direction on the top of the pillar 5, the base having a cap provided at the upper end of a thick cylindrical bearing, and a bolt screwed into the bearing. Shape stopper
62 is fastened to the base 5 to stop and fix the rotation, and the stopper is loosened to enable the rotation. Reference numeral 7 denotes a clamp member provided with a circular saw storing and running groove 8 disposed at a terminal end portion corresponding to the circular saw moving groove 4. Numeral 9 denotes a hydraulic cylinder installed in the horizontal arm. The tip of the piston rod 10 hanging from the clamp member 7 is connected to the clamp member 7. Reference numeral 11 denotes a guide rod which is fitted to a horizontal arm bearing 60 arranged side by side at an appropriate distance s (and s') from the pin ton rod so as to be able to ascend and descend. I have. Numeral 12 denotes a circular saw which travels along the groove of the table 2 and runs at the end of the moving groove while being stored in the groove of the clamp member 7. The circular saw is installed on a moving table 14 reciprocated by a bearing 13, and the moving table has a driving motor m.
Is mounted and pulley 15 belt 16 pulley 17
The rotational force is transmitted to the circular saw 12 via the like. The moving table 14 is reciprocally mounted on a rail 19 installed on a base 18 in the bed, and is mounted on pulleys 20 and 21 arranged at both ends of the rail. The transmission band 22 is suspended, and the moving table 14 is normally stopped at the base position by the servomotor m '. The moving table 14 is moved forward by the forward switch, and the circular saw 12 moves forward in the moving groove 4. A limit switch 23 is provided which stops the forward running when reaching the end position in the direction, and operates to return by the servomotor m '. In the drawing, reference numeral 24 denotes a cover body which can be opened and closed at the base end position of the circular saw 12.

[0007]

[Specific process example] The specific operation procedure according to the above embodiment will be described below. First, at the time of cutting, the piston rod 10 of the hydraulic cylinder 9 in the horizontal arm 6 arranged so as to coincide with the circular saw moving groove 4 of the table 2.
Is retracted, the clamp member 7 located at the same position as the horizontal arm rises while maintaining the horizontal state via the guide rod 11 and the bearing 60, and then the horizontal arm 6 is moved together with the clamp member 7 as shown in FIG. Then, the head is swung horizontally at an angle θ of 90 degrees or more counterclockwise and stopped at a position off the table surface. In this state, the heavy material to be cut w is
Using a known unloading machine such as a forklift or a forklift car, it is lowered onto the table and set at a predetermined position. Next, the horizontal arm 6 is released from its stop and fixed position and then rotated and fixed at its original position, that is, at a position where the groove 8 of the clamp 7 matches the moving groove 4. . Subsequently, when the hydraulic cylinder 9 of the horizontal arm is operated, the piston rod 10 moves forward, the clamp member 7 is lowered vertically, and the workpiece w is placed on the table 2 and positioned. Fix it. Then, when the motor m starts, the circular saw
When the rotary table 12 is rotated and the servomotor m 'is started, the circular saw moves forward in the moving groove 4 when the movable table 14 moves forward, and the workpiece w is cut. You. Then, when it reaches the 4 last end of the moving groove, the material to be cut w of the circular saw 12
The portion protruding from the upper surface in the thickness t direction travels in the storage groove having a downward cross-section and finishes cutting the workpiece to be pressed and fixed by the clamp member. When the circular saw reaches the end in the groove, the carriage 14 comes into contact with the limit switch 23, is switched to the reverse feed through the servo motor m ', and retreats to reach the original position. Then, the moving table 14 stops, and one process ends.

[0008]

As described above, the clamp device for a metal-cut circular sawing machine according to the present invention is fixed upright at a position near the end of the circular saw traveling groove on the table. The base of the horizontal arm is attached to the top of the base so as to be freely rotatable in the horizontal direction, and a clamp member having a circular saw storage groove is disposed at the end portion corresponding to the circular saw moving groove, and the horizontal arm is provided. Since the clamp member is connected to the piston rod and the guide rod of the fluid pressure cylinder by installing the
In order to supply the material to be cut to the bed, the horizontal arm can be swung horizontally in a swinging state and released to a position off the table surface. As a result, there is no obstruction on the table surface, and as a result, there is no obstruction of the clamp member even when feeding from the horizontal direction, so that it is not necessary to dive under the clamp member, and work is easy. The mochi theory, the material to be cut down from above the table
Since it can be placed on the table surface, any heavy material to be cut can be safely and easily supplied onto the table. Further, since the clamp member is connected by the piston rod hanging down from the fluid pressure cylinder and the guide rod arranged side by side at an appropriate interval, even if the clamp member is connected to the rod of the fluid pressure cylinder in a cantilever state, The horizontal state is always maintained, and the material to be cut can be pressed and fixed with a uniform pressing force when descending.

[Brief description of the drawings]

FIG. 1 is a front view of a circular saw having a clamp device according to the present invention.

FIG. 2 is a plan view of FIG.

FIG. 3 is a left side view of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Box-shaped bed 2 Table 3 Ruler 4 Movement groove for circular saw 5 Base 6 Horizontal arm 7 Clamping member 8 Storage groove for circular saw 9 Fluid pressure cylinder 10 Cylinder rod 11 Guide rod 12 Circular saw 13 Bearing 14 Moving table 15 Pulley 16 Belt 17 Pulley 18 Base 19 Rail 20 Pulley 21 Pulley 22 Drive band

Claims (1)

(57) [Scope of request for utility model registration] 1. A base post at a position near the end of a circular saw moving groove (4) in a circular saw advance direction of a circular saw moving groove (4) opened in a table (2) of a bed (1).
(5) is fixed upright, and the base of the horizontal arm (6) is attached to the top of the base so that it can rotate freely in the horizontal direction.
A clamp member (7) having a circular saw storage groove (8) is arranged at the end portion corresponding to the above, and is installed on the horizontal arm and attached to the piston rod (10) hanging down from the fluid pressure cylinder (9). The clamp member (7) is connected to a guide rod (11) fitted so as to be able to move up and down on a horizontal arm (6) arranged side by side while maintaining an appropriate distance from the rod while being connected. Clamping device for a circular saw.