JPS6010848B2 - sawing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a mirror cutting device used for dividing and cutting large diameter materials such as steel pipes and billets.

Conventional saw cutting equipment of this type uses one circular saw blade to cut one piece of material.
The cutting operation is performed from the side, and the diameter of the saw blade used for this generally needs to be about three times the diameter of the material to be cut.

In recent years, materials to be cut have become larger in diameter, but large-diameter saw blades are extremely difficult to manufacture, and the larger the saw blade diameter, the more expensive it becomes. Therefore, when cutting Daiyo wood with a conventional device, it is necessary to perform two or more steps of cutting one side of the material, pulling off the mirror blade, changing the setting of the material, and then cutting the other side again. It was not possible to increase the actual cutting time due to set changes, and the cutting time was approximately constant depending on the material diameter, making it impossible to cut efficiently. In addition, the mirror blade machine using a large-diameter lock blade requires a large saw blade rotating torque, so the entire device including the transmission device becomes large and the equipment becomes extremely expensive.
The present invention has been made in order to eliminate the drawbacks of the conventional devices described above, and includes two sets of cutting devices equipped with circular saw blades that are slidably supported on a machine stand so that both saw blades face each other, and At least one of the cutting devices is a mirror cutter whose saw blade is movable beyond the center of the machine, so that one saw blade is responsible for cutting roughly half the length of the material to be cut. It is an object of the present invention to provide a sawing device that can perform divisional cutting without making the device large.

The embodiment will be described below with reference to the drawings. In the drawing, reference numeral 1 denotes a sawing machine, and clamping devices 2 and 3 are arranged on both sides of the center of the sawing machine 1. The saw cutting machine 1 is composed of a machine base 4 and two sets of cutting devices 5 and 6 that are engaged on the machine base 4 and are slidably supported by a driving device (not shown) in an opposing state. There is. The cutting devices 5 and 6 are comprised of a mirror blade head 8 rotatably supporting a circular saw blade (carbide-tipped saw) 7 at one side, a transmission device, and a drive motor 9. The clamping devices 2 and 3 each include a horizontal clamping device 10 and a vertical clamping device 11 supported on a machine base 12 in order from the lock cutting machine 1 side, and a hydraulic cylinder 13.
It has a structure that allows it to slide in a direction perpendicular to the saw cutter 1. Of the two sets of clamp devices 2 and 3, one of the clamp devices 2 has a larger sliding amount than the clamp device 3 in order to facilitate replacement of the saw blade 7. The horizontal clamping device 10 has a structure in which two clamp vises 14, 14 are attached to the inner end of a horizontal shaft in a facing state, and are operated by a hydraulic cylinder 15 via a synchronized interlocking device (not shown) such as a rack and pinion. It has become. Moreover, the vertical clamp device 11
The structure is such that two clamp vises 16, 16 are attached to a rotatable vertical shaft, and the clamp vises can be rotated and the material 29 can be clamped in the vertical direction.

Reference numeral 17 denotes a vertical auxiliary clamping device for clamping the material 29 in the sawing machine 1, and the clamping device 17 is connected to the cutting device 5,
The inner ends of both sliders 23 are guided and supported by guide rollers 19, 20, 21 in the vertical and horizontal directions by an inverted T-shaped member 18 fixed on each mirror blade head 8 of 6, and are actuated by a hydraulic cylinder 22. It consists of a guide bar 26 that is moved up and down via a link device 25 by a hydraulic cylinder 24 serving as a driving body, and a clamp vise 27 that is attached to this guide bar 26.

In addition, the lining material 2 is placed on the material pressing surface of the clamp vise 27.
8 For example, urethane rubber or the like is fixed. Since the present invention is constructed as described above, first, both the clamp devices 2 and 3 and the saw cutter 1 are left in an open state, and a large diameter cutting material 29 is transferred to the clamp device and the saw cutter 1 using a crane or a transfer device. The cutting machine is loaded onto each table installed on the bridge.

Thereafter, the horizontal clamping devices 10 of both clamping devices 2 and 3 are operated to center the material using the clamp vises 14 and 14, and to clamp the material from the horizontal direction. Thereafter, the clamp vises 16, 16 of each vertical clamp device 11 of both clamp devices are rotated onto the material, and the material is clamped from the vertical direction.

Further, both sliders 23 which are slidably supported on the mirror blade heads 8 of the cutting devices 5 and 6 are extended by the hydraulic cylinder 22, and then the hydraulic cylinder 24 is operated to move the material in the mirror cutting machine 1 to the vertical auxiliary clamp device. 17, 17 to clamp from the vertical direction.

After the auxiliary clamping device is activated, the hydraulic cylinder 22 has its pipeline freed by the operation of the electromagnetic switching valve, so that the cutting devices 5 and 6 move while maintaining the clamping reaction force of the vertical auxiliary clamping device 17. After the clamp operation, the lock blade 7 is driven and rotated while the clamp devices 5 and 6 are moved (advanced) in a direction toward each other, and cutting is started from both sides of the material 29 at the same time. When the saw blade 7 has cut slightly before the center of the material, stop the rotation and movement of both mirror blades (
(primary cutting), one of the two cutting devices is moved backward and the other chain blade is rotated and fed forward to completely cut the material (secondary cutting).

After cutting the material, the vertical auxiliary clamping device 17 is opened, and the vertical auxiliary clamping device 17 is moved back together with the cutting devices 5 and 6, and the clamping devices 2 and 3 on both sides of the cutting machine are opened and returned.

After that, the cut material is transported out using a crane or a transfer machine.
Immediately after cutting the material, the cut material is pulled away from the locking blade by a small amount by the hydraulic cylinder 13 while still being clamped, thereby preventing damage to the saw blade when the cutting device is retracted and returned.

As described above, according to the present invention, it is possible to simultaneously cut a material from both sides using two cutting devices placed opposite each other in a horizontal state, thereby reducing the cutting time to a large extent, and even for large-diameter materials. Since complete cutting can be performed with the tool set, in combination with the above-mentioned points, the cutting operation can be carried out extremely efficiently.

Furthermore, even if the material to be cut has a large diameter, it can be cut with a relatively small-diameter chain blade, and the driving torque of the mirror blade can be reduced.The motor and transmission device are made into 4-type motors, reducing the rigidity of the entire cutting machine. It also has the effect of making it cheaper.

In addition, in a saw cutting machine in which two sets of cutting devices each having a saw blade on one end are slidably supported on a machine base with the saw blades facing each other, clamps are placed on both sides of the center. One of the clamping points of the device is far away from the material cutting point, so when cutting a material with low rigidity such as a square tube, the material vibrates during cutting, damaging the saw blade (the saw blade cuts) and causing high However, in the present invention, the auxiliary clamping device that is slidably supported above the saw blade of the cutting device makes it possible to place the clamping point near the material cutting point, and the saw blade can be cut easily on both sides of the sawing device. In cooperation with the clamping device, the material is strongly clamped so that it does not vibrate, and the material can be cut easily without damaging the mirror blade and with as little noise as possible.

[Brief Description of the Drawings] Fig. 1 is a plan view of the mirror cutting device according to the present invention, Fig. 2 is a front view thereof, Fig. 3 is a right side view thereof, and Fig. 4 is taken along line A in Fig. 1. FIG. 5 is a partially enlarged view taken along line B in FIG. 2, and FIG. 6 is a partially enlarged view taken along line C in FIG. 1... Saw cutting machine, 2, 3... Clamping device, 4... Machine stand, 5, 6... Cutting device, 7
... Mirror blade, 17 ... Vertical auxiliary clamp device. Figure 1, Figure 2, Figure 3, Figure 4, Tsutomu, Figure 5, Leopard, Figure 6.

Claims (1)

[Claims] 1. Two sets of cutting devices each having a saw blade head with a saw blade on the side of the end are slidably supported on a machine base with the saw blades facing each other, and at least one of the cutting devices is A saw blade whose saw blade is movable beyond the center of the machine base; a clamp device disposed on both sides of the center of the saw blade; and a slidable support above each saw blade of both cutting devices. and a vertical auxiliary clamping device attached to the inner end of each of the sliders, the vertical auxiliary clamping device comprising a driving body and a vertical auxiliary clamping device operatively connected to the driving body. A sawing device comprising a clamp vise.