JP2003103415A - Device for cutting and removing unnecessary materials attached to casting - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce cost by changing the number of revolutions of a diamond chip saw and changing the design of the saw in a device for cutting and removing unnecessary materials such as the sprue of an aluminum casting. SOLUTION: The device A for cutting and removing unnecessary materials such as the sprue 9 of a casting 8 comprises a rotary shaft 3, a motor 1 rotating the rotary shaft with high speed, and a disk-shaped diamond chip saw 2 which is mounted on the edge 4 of the rotary shaft 3 and rotates with high speed by the rotation of the rotary shaft 3 to cut and remove the unnecessary material 9 of the casting 8. The rigidity of the chip saw 2 is increased due to the effect of the gyro moment and the centrifugal force of the fast rotating diamond chip saw 2 itself at the speed of 6000-8000 rpm. Thus the thickness of the chip saw 2 can be reduced from 6-8 mm to 2.5 mm and the amount of the diamond chips to be used can be reduced so that the cutting cost reduction can be realized.

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for cutting and removing unnecessary objects adhered to various castings such as automobile parts obtained by casting aluminum or the like. A cutting tool for cutting and removing unnecessary objects including a diamond tip saw that cuts and removes waste such as a gate of a product, and a rotating device such as a motor that rotates the tip saw at high speed. In addition to reducing the cutting power and achieving energy saving of the cutting power, and reducing the amount of chips generated at the time of cutting, the waste of the material of the casting is reduced, thereby significantly reducing the production cost of the casting. The present invention relates to a device for cutting and removing adhered waste. 2. Description of the Related Art Various parts of an automobile, such as a cylinder head, a cylinder block and an intake manifold, are manufactured by casting aluminum. Since the casting obtained by this casting has an unnecessary material such as a sprue attached thereto, it is necessary to cut and remove the unnecessary material from the casting. Conventionally, as this kind of unnecessary object cutting and removing apparatus, a diamond tip saw is mounted on the tip of a rotating shaft of a rotating device such as a motor, and the diamond tip saw is rotated at a high speed by driving the rotating device. Was used to cut the waste of the casting. At this time, the rotation speed of the diamond tip saw is 1000 rpm to 3600 rpm. In order to prevent vibration during cutting, for example, if the diameter of the tip saw is about 400 φ, Thickness 6
About 8 mm was required. The present inventor has set the number of revolutions of the tip saw to 4000.
When the speed is increased to rpm or higher, the centrifugal force of the tip saw itself and the gyro moment effect significantly increase the rigidity of the tip saw, and as a result, it has been discovered that the thickness of the tip saw can be reduced by the rigidity of the tip saw, The present invention has been completed. SUMMARY OF THE INVENTION An object of the present invention is to provide an apparatus for cutting and removing unnecessary objects from a casting, comprising a diamond tip saw for cutting and removing unnecessary objects such as a gate of a casting, and a rotating device such as a motor for rotating the tip saw at high speed. Reduced chip usage, energy savings in cutting power, and reduced chips generated during cutting, which reduces casting material waste, thereby significantly reducing casting production costs. Accordingly, it is an object of the present invention to provide an apparatus for cutting and removing an unnecessary object attached to a casting, in which the above-mentioned disadvantages of the known technique are improved. According to the present invention, there is provided, in accordance with the present invention, a device for cutting and removing unnecessary objects attached to a casting, comprising a rotating shaft, A high-speed rotating device, and a disk-shaped diamond tip saw that is attached to the tip of the rotating shaft and is rotated at a high speed by the rotation of the rotating shaft to cut and remove unnecessary material of the casting. The diamond saw is rotated at a high speed at a high speed, and the centrifugal force and the gyro moment effect of the diamond saw which is rotated at a high speed enhances the rigidity of the tip saw, thereby reducing the thickness of the tip saw by the rigidity of the tip saw. In addition to reducing the amount of chips used, energy saving of cutting power and reduction of chips generated during cutting And butterflies. Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is a perspective view of one embodiment of the cutting and removing apparatus according to the present invention, and FIG. 2 is an enlarged partial side view of a portion a in FIG. In FIG. 1, reference numeral A denotes a cutting and removing apparatus according to the present invention, which comprises a rotating device 1 such as a motor, and a disc-shaped diamond tip saw 2. Motor 1
The (rotating device 1) has a rotating shaft 3, and a disk-shaped diamond tip saw 2 is attached to a tip 4 of the rotating shaft 3.
Then, the rotating shaft 3 of the motor 1 is rotated at a high speed by the driving of the motor 1, and with this rotation, the disk-shaped diamond tip saw 2 mounted on the tip 4 is also rotated at a high speed. As shown in FIG. 2, which is an enlarged side view of the portion a of FIG. 1, the peripheral edge of the chip saw base material 5 has a large number of chips 6, 6,. .6, these chips 6, 6 ...
The diamond blades 6 are respectively attached with diamond blades 7, 7,... The size of each of the diamond blades 7 is, for example, 4 mm × 4 mm × 1 mm, and is attached to the super hard material 10. The diamond tip saw 2 is rotated at a rotation speed of 4000 rpm or more, preferably 4000 rpm to 10000 rpm by the rotation of the rotating shaft 3 by the motor 1,
As shown in FIG. 1, when casting a casting 8 such as aluminum, for example, the waste 9 attached to the casting 8 of a cylinder head, which is an engine part of an automobile, is cut and removed. High-speed rotated diamond tip saw 2
The rigidity of the tip saw 2 is significantly improved by the centrifugal force and the gyro moment effect of the tip saw itself, and the thickness of the tip saw can be reduced by an amount corresponding to the improvement in the rigidity of the tip saw. That is, the size of the tip saw is 300 to 400φ
In the prior art having a cutting spindle rotation speed of 1800 rpm, the thickness of the tip saw was required to be about 6 mm to 8 mm in order to prevent vibration of the tip saw, but in the present invention, the cutting spindle rotation speed was 7000 rpm, Cutting area 50mm ×
When cutting a 100 mm gate at a feed rate of 30 mm / sec,
The thickness of the tip saw can be 2.5 mm. Thus, the thickness of the tip saw is 6 mm to 8 mm.
By reducing the thickness from 2.5 mm to 2.5 mm, the amount of diamond chips used is reduced to, for example, 4 mm × 4 mm × 1 mm and cutting power, that is, energy saving of the cutting power by the motor 1 in FIG. 1 is achieved, and Chips generated from the cut portion 11 generated when the waste material 9 of the casting 8 is cut are reduced, which can greatly contribute to a reduction in the production cost of the casting. In FIG. 1, reference numeral 12 denotes a clamp for holding the casting 8 therebetween, and is fixed to the support plate 13. The clamp 12 is also attached to a support plate 13 at an opposing position (not shown), and holds the casting 8 from both sides. As described above, according to the present invention, by increasing the rotation speed of the diamond tip saw to 4000 rpm or more, the rigidity of the tip saw is significantly improved by the centrifugal force and the gyro moment effect of the tip saw itself. The thickness of the tip saw is increased by the rigidity of the tip saw,
For example, it is possible to reduce the thickness from 6 mm to 8 mm to 2.5 mm and to reduce the cost, which is an extremely useful invention in practical use.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a specific example of a cutting and removing apparatus according to the present invention. FIG. 2 is an enlarged side view of the portion of FIG. DESCRIPTION OF THE SYMBOLS A Cutting and removing apparatus 1 according to the present invention 1 Motor 2 Diamond tip saw 3 Rotating shaft 4 Tip 5 Tip saw base material 6 Tip 7 Diamond blade 8 Casting 9 Unused object 10 Carbide material 11 Cutting part 12 Clamp 13 Support plate

Claims (1)

Claims 1. An apparatus for cutting and removing unnecessary objects attached to a casting, comprising a rotating device having a rotating shaft and rotating the rotating shaft at a high speed, and being mounted on a tip of the rotating shaft. It is provided with a disk-shaped diamond tip saw that is rotated at a high speed by the rotation of the rotating shaft and cuts and removes unnecessary matter attached to the casting,
The tip saw is rotated at a high speed of 4000 rpm or more, and the centrifugal force and the gyro moment effect of the high-speed rotated diamond tip saw itself increase the rigidity of the tip saw, thereby reducing the thickness of the tip saw by the increased rigidity of the tip saw. A cutting and removing apparatus for cutting off unnecessary matter attached to a casting, wherein the amount of diamond chips used is reduced, energy for cutting power is reduced, and chips generated during cutting are reduced.