JP3043817U - Low noise air-cooled rotary gliding cutter for precision cutting - Google Patents

Abstract

(57) 【Abstract】 PROBLEM TO BE SOLVED: To prevent frictional heat generated when cutting a rotary grinder, to reduce adhesion and scattering of cutting powder, and to reduce noise, thereby making it possible to perform precise cutting, which is difficult to cut, has poor durability and is damaged during use. Eliminate problems such as not being possible. A rotary grinder (1) having regular through holes, a washer (10), and a wing plate (11) (1)
4), the left flange (8) and the right flange (9) made of the vibration absorbing material (12) are combined, and the left flange (8) is attached to the drive shaft (15) of the rotary gliding cutter.
By attaching the rotary grinder (1) and the right flange (9) in this order, the heat dissipation and the wing plate (1
1) It is possible to create a flow of air in a certain direction by (14), enhance the cooling effect, and prevent the cutting powder from adhering or scattering. Also, noise can be reduced by using a vibration absorbing material for a part of the flange.

Description

[Detailed description of the invention]

[0001]

[Industrial applications]

 The present invention relates to a rotary grinder part of a rotary gliding cutter that is used in construction sites, civil engineering sites, and various work sites and cuts various materials such as metal materials and synthetic resin materials.

[0002]

[Prior art]

 Conventionally, rotary gliding cutters used in various fields have the structure shown in Fig. 1. The structure of many rotary gliding cutters has a disk-shaped blade mainly made of grindstone abrasives and is fastened to an electrically rotating shaft to rotate the cutter and press it against the object to be cut. Has become.

[0003]

[Problems to be solved by the device]

 However, the conventional rotary gliding cutter had the drawback that the frictional heat from cutting was extremely high. This frictional heat is generated because the rotating grinder used has no heat dissipation effect. If high-temperature frictional heat is generated during cutting, the cutting powder adheres to the rotary grinder, making smooth cutting difficult and reducing cutting efficiency. Furthermore, if the machine is continuously used in such a state, the rotary grinder itself may be shaken and damaged, giving an extra load to the drive motor, making it unusable and affecting the work of the main business. Further, since the rotary grinder rotates at a high speed, cutting powder is scattered, which is dangerous to the user. Furthermore, since it cuts at a high speed, there is a problem that the noise is large and the safety is insufficient. In the present invention, the problems of the conventional rotary gliding cutter are "cutting powder adheres and does not cut quickly" "rotary grinder breaks during cutting" "cutting powder scatters and has a dust mask" "noisy" It is an object of the present invention to provide a rotary gliding cutter that eliminates the disadvantages such as "the rotary grinder is poorly held and the number cannot be cut" and "replacement of the rotary grinder takes time and affects workability".

[0004]

[Means for Solving the Problems]

 In order to achieve the above object, the rotary gliding cutter of the present invention rotates a disk-shaped rotary grinder at high speed by driving a motor or the like. Press the rotary grinder against a material such as metal or synthetic resin. In a rotary grinding cutter that cuts these materials, through holes are regularly formed at several disc-shaped portions of the rotary grinder. This rotary grinder has flanges on the left and right sides.

[0005]

[Action]

 A rotary grinder with regular through holes at several places and a flange with a wing plate are installed on the left and right sides, fastened to the rotary shaft of a rotary gliding cutter, and rotated to cut. The rotating grinder itself is cooled by the effect of the through holes that are regularly formed, so that the generation of frictional heat at the time of cutting can be suppressed and the adhesion of cutting powder is eliminated. Also, due to the effect of the wing plates attached to the left and right flanges, the force and flow of wind in a certain direction are generated, and the cutting powder is also transferred together, and the scattering of the cutting powder can be prevented. Further, since vibration absorbing materials such as glass fiber and hard rubber are used in part of the left and right flanges, noise can be reduced.

[0006]

【Example】

 Embodiments of the present invention will be described below with reference to the drawings. 2 shows an embodiment of the rotary grinder of the present invention, FIG. 3 shows a left flange, FIG. 4 shows a right flange, and FIG. 5 shows a schematic view of fastening a rotary gliding cutter to a rotary shaft. Through holes for cooling are regularly formed in the rotary grinder (1) of FIG. The most suitable method to prevent the cooling effect and the adhesion of cutting powder is to form the through holes in three places on the circumference (at intervals of 120 degrees) on the pitch circle based on the following formula. P ・ C ・ D = D-2 [(r + d / 2) + (n-1) d] P ・ C ・ D: Pitch circle diameter of the nth through hole from the outer diameter of the rotating grinder diameter D: Of the rotating grinder Outer diameter r: Distance from the outer diameter of the rotary grinder to the outer diameter surface of the through hole d: Through hole diameter n: Number of pitch circle diameters from the outer diameter of the rotary grinder As shown in Fig. 2, the outer diameter of the rotary grinder to be used is determined. Therefore, if r and d are determined, the pitch circle diameter (P ・ C ・ D) (2) for opening the n = 1st through hole is calculated by the above formula, and the through hole (3 ) Open. Hereinafter, the n = 2nd to 5th pitch circles (n = 5 is shown in the figure) are determined, and through holes are formed in the respective pitch circle diameters. The through hole (4) formed in the n = second pitch circle diameter is provided in the center distribution portion between the through holes (3). The n = third through hole (5) is the center distribution part between the through hole (3) and the through hole (4), and the n = 4th through hole (6) is the center distribution part between the through holes (5). Go in The n = 5th through-hole (7) is a center distribution of the through-hole (5) and the through-hole (6), and the pitch circle diameter is different, but it is opened at the same place as n 1 = 1. As described above, in this actual example, n (the number of pitch circle diameters) = 5 and 15 through holes are used as the rotary grinder. However, the shape can be changed by changing the number of the above formulas. Is possible. Due to the effect of the through holes opened in this way, the rotating grinder has a heat dissipation effect, which makes it possible to prevent the cooling effect and the adhesion of cutting powder, so that the rotating grinder itself does not shake and the sharpness does not change and precision cutting is possible. It will be possible. Also, even if the rotating grinder wears and the outer diameter becomes smaller, the through holes are regularly formed, so it is possible to cut under the same conditions, no heat is generated, no cutting powder adheres, and there is a possibility of damage during the process. It became possible to cut without. By combining the rotary grinder (1) with the above features with the left flange (8) and the right flange (9) shown in FIGS. 3 and 4, more precise cutting, cooling effect, dust prevention, noise reduction, etc. A safer rotary gliding cutter can be configured. In the left flange (8) shown in FIG. 3, a plurality of wing plates (11) (three in the figure) are attached to the washer (10) by welding or screw fastening. Further, the vibration absorbing material (12) is attached to the center of the flange by adhesion or the like. As the vibration absorbing material (12), resin type glass fiber or hard rubber having a high vibration absorbing property is effective. A through hole (13) for attaching to the rotary shaft of the rotary gliding cutter is machined in the center of the flange. The right flange (9) of FIG. 4 is also constructed in the same structure as the flange of FIG. 3 and has the same function, but only the wing plate (14) is attached oppositely. The features of the left and right flanges are that the direction of the wind of the grinder that rotates at high speed is changed in a certain direction by the wing plate, which promotes cooling of the cutter part and prevents scattering of cutting powder, and dust on the rotating direction side. It is accumulated to prevent scattering and adhesion. Further, by using the vibration absorbing material (12), the noise of metal contact noise at the time of cutting can be significantly reduced. FIG. 5 shows a fastening schematic diagram in which the above left and right flanges (8) and (9) and the rotary grinder (1) are attached to the rotary shaft of the rotary grinding cutter. As shown in FIG. 5, first insert the left flange (8) through the rotary shaft (15), then insert the rotary grinder (1) and then the right flange (9) into the nut at the end of the rotary shaft (16). Conclude with. After setting in this way, it can be used in the same manner as the conventional rotary grinding cutter. When mounting, if the wing plates (11) and (14), which are part of the left and right flanges, are mounted so that their positions are aligned with each other, more effective cooling and dust scattering can be prevented. As described above, the present invention comprises a left flange (which is composed of a rotary grinder (1) having regularly formed through holes, a washer (10), wing plates (11) and (14), and a vibration absorbing material (12). By combining 8) and the right flange (9), the conventional drawbacks such as heat generation, clogging, poor sharpness, scattering of cutting powder and noise can be solved, and cutting efficiency and work efficiency are significantly improved. be able to.

[0007]

[Effect of the invention]

 As in the present invention, by effectively combining the right and left flanges (8) and (9) with the rotary grinder (1) having regular through holes, the frictional heat generated from the cutting portion can be suppressed, and the left and right sides can be suppressed. Due to the effect of the wing plate (14), which is a part of the flange, the wind generated from the rotational force can be made to flow in a fixed direction, and the cooling performance can be improved and cutting powder can be prevented from adhering. Further, since dust flows in a certain direction together with the wind, it is possible to prevent scattering of cutting powder. On the other hand, due to the effect of the vibration absorbing material (12) which is a part of the flange, the noise of the entire device is reduced, and the cutting work can be performed safely and without danger for the user. In addition, because the cutting powder does not adhere, it becomes unusable or damaged during cutting, the frequency of replacement of the rotary grinder itself is reduced, and workability is improved. The effect of can be expected.

[Brief description of the drawings]

FIG. 1 is a perspective view of a rotary gliding cutter that has been widely used in conventional work sites.

FIG. 2 is a diagram showing how to drill through holes in the rotary grinder of the present invention.

FIG. 3 is a front view of the left flange of the present invention and a sectional view taken along line BB.

FIG. 4 is a front view of the right flange of the present invention and a sectional view taken along line CC.

FIG. 5 is a schematic view of fastening the rotary grinder and the left and right flange combination components of the present invention to the rotary shaft of the rotary gliding cutter.

[Explanation of symbols]

 1 rotating grinder 2 pitch circle diameter 3 to 7 through hole 8 left flange 9 right grunge 10 washer 11, 14 wing plate 12 vibration absorber 13 through hole 15 rotating shaft 16 nut

Claims (4)

[Utility model registration claims] 1. A rotating grinder is regularly provided with through holes to prevent cooling effect and adhesion of cutting powder, and even if the diameter of the rotating grinder becomes small due to wear, it does not shake and precise cutting continues. A rotary gliding cutter characterized by what you can do. 2. A combination of left and right flanges and a rotary grinder, which are attached to a rotary shaft of a rotary gliding cutter to prevent cutting powder from adhering and scattering and to reduce frictional heat and noise. The rotary gliding cutter according to claim 1. 3. A wing plate is attached to a part of the left and right flanges so that the wind generated by the rotation of the rotary grinder is not diffused to create a flow in a certain direction to cool the entire cutter portion and prevent the cutting powder from being scattered. The work can be performed safely because the water flows out in a certain direction together.
The described rotary gliding cutter. 4. The rotary gliding cutter according to claim 1, wherein a vibration absorbing material is used for a part of the left and right flanges to absorb noise at the time of rotary cutting at the flange portion and reduce the noise.