KR101966552B1 - Grinding tip for chain saw - Google Patents

Abstract

The present invention relates to a cutting tip of a chain saw, and is manufactured to have a predetermined length, a predetermined height, a predetermined width, the upper surface of the cutting having a front groove on the front surface, the front and rear opening with a predetermined width and a predetermined depth It can be made to include.

Description

Grinding tip for chain saw

The present invention relates to a chain saw, and more particularly, to a cutting tip of the chain saw to minimize the breakage while improving the cutting force by making the cutting tip friction with the workpiece to have a unique shape and function.

In general, the chain saw is configured so that the cutting chain equipped with the abrasive including the diamond tip or the like rotates in an infinite trajectory by a power source, and is used when cutting or trimming stone or wood. Depending on the type of power source, there are gasoline chain saws using fuel, electric chain saws using electric motors, and air chain saws using compressed air.

For example, a conventional chain saw may be manufactured so that the chain rotates in one direction by making an infinite trajectory by a power source. Here, as shown in Figure 1, the chain is a cutting having a plurality of drive links 10, which are mounted so as to transmit the power of the power source, the cutting link 21 is processed on a portion while being mounted by connecting the drive links (10) Link 20 may be provided. In this case, the cutting link 20 may form a cutting tip 21 by coating an abrasive material on the upper portion of the cutting piece 22 as shown in FIG. 2, and in addition, the cutting link 20 may be fixed to the cutting piece 22 as shown in FIG. 3. The cutting tip 21 of a shape can also be attached and manufactured.

In this case, when the coating is formed by coating the cutting tip 21, there is a high possibility that the coating may be peeled off due to the continuous friction with the workpiece, and thus the service life may be shortened. In addition, when the cutting tip 21 is attached, the side or the upper surface is flat on the side, so that the edge of the entry end that first comes into contact with the workpiece due to friction and impact between the workpiece and the cutting tip 21 during the cutting operation. There is a problem, such as being broken or lost due to the loss of adhesion.

US 086510005 (B2) (registered Feb. 18, 2014) Republic of Korea Patent No. 10-1568102 (August 12, 2015) Republic of Korea Utility Model No. 20-2012-0000779 (2012.02.02.) Republic of Korea Utility Model No. 20-2011-0003351 (2011.04.05.)

An object of the present invention devised to solve the above problems is that a groove of a certain depth is machined on the upper and / or lower surface of the cutting tip, and an inclined surface of an angle is machined on the entrance end of the upper surface, thereby reducing the frictional load and cutting it. It is to provide a cutting tip of the chain saw to improve the performance, and to prevent the falling of the cutting tip even in long time operation.

Cutting tip of the chain saw according to the present invention to achieve the above-described object, is made to have a predetermined length (L1), a predetermined height (H2), a predetermined width (W), the upper surface of the front, the front and rear open And a cutting part having an upper groove processed to a predetermined width and a predetermined depth (D1).

Here, the upper groove may include at least one of a first right side inclined by a predetermined angle θ2 toward the top right of the front face, a first bottom portion which is machined at a constant curvature (θ 2) concave on the front side, and a first left side surface perpendicular to the front side. In this case, the first right side surface and the first left side surface may have a predetermined height D2 from an upper surface to a first bottom portion.

In addition, the upper surface is inclined upward by a predetermined length (L2) while inclined upward at a predetermined angle (θ1) from the front side entrance portion, the predetermined length (L3) from the end of the inclined surface to the first right side of the upper groove At least one of the first flat surface and the second flat surface processed by a predetermined distance (L4) from the first left side of the upper groove to the distal end (Ex) side end.

In this case, a portion where the first right side surface and the first flat surface contact each other may form a predetermined curvature R1, or a portion where the first left side surface may contact the second flat surface may have a predetermined curvature R3.

In addition, the upper groove is located at the exit portion (Ex) side with respect to the center line (C) on the front face, or mostly located on the exit portion (Ex) side, the upper part of the first right side over the center line (C) entry portion ( En).

In addition, the lower surface of the cutting portion may be provided with a lower surface groove.

At this time, the lower surface groove is located at the entrance portion En with respect to the center line C on the front side, the second right side surface perpendicular to the second bottom portion convexly processed with a constant curvature R2, and a predetermined angle to the lower left ( At least one of the second left side surface inclined to θ2).

At this time, the second right side surface and the entry portion En may have a predetermined distance L5 from the front end.

In addition, the first right side surface of the upper groove and the second left side surface of the lower groove may be spaced apart by a predetermined vertical distance (L6).

On the other hand, the cutting tip according to the present invention may further include a fixed part manufactured to have a predetermined length (L1), a predetermined height (H3), a predetermined width (W) to be mounted to the lower portion of the cutting portion.

In this case, the cutting tip may be manufactured to a predetermined length (H1), a predetermined length (L1), the fixed portion and the cutting portion combined with a predetermined width (W).

In addition, the lower surface of the fixing portion is formed on the front surface of the lower surface, the front surface and the rear surface is opened with a predetermined width and a predetermined depth (D3), and further provided with a lower surface groove processed only on the fixed portion or processed over the fixed portion and the cutting portion. Can be.

In this case, the lower surface groove may include at least one of a vertical second right side surface, a bottom portion which is convex on the front face at a predetermined curvature (θ 2), and a second left side surface which is inclined at a predetermined left and downward angle (θ 2).

In addition, it may be made to have a predetermined length (L5) from the second right side to the front end of the entry portion (En).

The first right side surface of the upper groove and the second left side surface of the lower groove may be spaced apart by a predetermined vertical distance L6.

On the other hand, the cutting tip according to the present invention is an example, the length (L1) is 10 ~ 13mm, the height (H1) is 5 ~ 6mm, the width (W) is 4 ~ 6.5mm, the inclination angle (θ1) is 15 ~ 17 °, length L2 is 2-3 mm, length L4 is 3.5-4.5 mm, curvature R1 is 0.2-0.7, curvature R2 is 0.7-0.8, and curvature R3 is 0.7 to 1.3, depth D1 is 2.3 to 3 mm, depth D2 is 1.5 to 2 mm, tilt angle θ2 is 18 to 22 °, height H3 is 1 to 2 mm, length L5 Is 2.5 to 3.5mm, the length (L6) can be manufactured to 2.1 to 2.5mm.

In addition, the cutting tip according to the present invention is another example, the length (L1) is 11.9mm, the height (H1) is 5.5mm, the width (W) is 4.7mm or 5.7mm, the inclination angle (θ1) is 15.99 ° , Length L2 is 2.5mm, length L4 is 4mm, curvature R1 is 0.5, curvature R2 is 0.75, curvature R3 is 1, depth D1 is 2.5mm The depth D2 is 1.75 mm, the inclination angle θ2 is 20 °, the height H3 is 1.5 mm, the length L5 is 3 mm, and the length L6 is 2.38 mm.

As described above, according to the present invention, by machining the upper and / or lower surface grooves to a predetermined depth on the upper surface and / or lower surface of the cutting tip, it is possible to reduce the friction load, improve the cutting force to increase the work efficiency There is.

In addition, by processing the inclined upper left side from the leading end side of the upper side of the cutting tip on the front face, the impact of the first contact with the workpiece to be minimized during work, and the breakage of the entry end is prevented, and finally the cutting tip is There is an effect that can prevent the falling off phenomenon.

The following drawings, which are attached in this specification, illustrate the preferred embodiments of the present invention, and together with the detailed description thereof, serve to further understand the technical spirit of the present invention. It should not be interpreted.
1 is an enlarged view showing a part of a chain of a chain saw as an example of the related art.
FIG. 2 is an enlarged view illustrating the cutting link shown in FIG. 1.
3 is another enlarged view showing a part of a chain saw as a conventional example.
Figure 4 is a perspective view schematically showing a cutting tip of the chain saw according to an embodiment of the present invention.
5 is a side view of FIG. 4.
FIG. 6 is an enlarged view of a portion of the chain with the cutting tip of FIG. 1; FIG.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. However, in describing in detail the operating principle of the preferred embodiment of the present invention, if it is determined that the detailed description of the related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

Hereinafter, the 'entry end' and the 'entry (En; entry part)' refers to a portion where the chain saw first touches the cutting object when the chain of the chain saw rotates in one direction for cutting operation, and the 'entry direction' 'May refer to the direction of rotation of the chain. In addition, the exit part and the exit part may refer to opposite portions of the entrance end with respect to the front center line. In addition, the 'before, after, left, right, up, down' orientation may face the direction drawn in Figs. 4 and 5, and may refer to six directions. Thus, for example, the 'right' side may be the entry side.

Cutting tip 1000 of the chain saw according to a preferred embodiment of the present invention as shown in Figures 4 and 5, in a substantially hexahedral shape having a predetermined length (L1), a predetermined width (W) and a predetermined height (H1). Can be made. In addition, the cutting tip 1000 includes a cutting part 1100 and a fixing part 1200.

The cutting unit 1100 may be made of any one material or a mixture of cutting materials including diamond in order to cut a workpiece including stone, wood, rebar, or concrete. The cutting part 1100 may be manufactured in a substantially hexahedral shape having a predetermined length L1, a predetermined width W, and a predetermined height H2.

In addition, the upper surface 1110 of the cutting unit 1100 has a predetermined length (from the end of the inclined surface 1120 and the inclined surface 1120 of the predetermined length L2 on the planar entry portion En side) to the upper groove 1150. It may have a shape having a second flat surface 1140 of a predetermined length L4 from the first flat surface 1130 and the upper surface groove 1150 of L3 to the left end.

Here, when the inclined surface 1120 of the chain saw chain (4000 (see FIG. 6)) moves in an infinite trajectory in one direction, the impact between the cutting tip 1000 and the workpiece to be alleviated to break or drop the cutting tip 1000 It can be molded to prevent. The inclined surface 1120 may be processed to be inclined downward at a predetermined angle θ1 toward the entry direction on the front surface entry part Ex side and may be processed to have a predetermined length L2 on the front surface.

In addition, the cutting unit 1100 may further include a top groove 1150. The upper groove 1150 may reduce the frictional load with the workpiece during the cutting operation. At this time, the upper surface groove 1150 has a substantially "U" shape on the front surface, the front surface and the rear surface is open, it may be processed to have a predetermined depth (D1) from the upper surface 1110. In addition, the upper groove 1150 may be located, for example, on the exit part Ex side that is opposite to the entry part En from the center line C with respect to an approximately front length. As another example, as shown in FIG. 5, the upper groove 1150 is machined such that a part of the first right side surface 1151 is positioned at the entry portion En beyond the center line C while most of them are located at the exit portion Ex. It is desirable to be. This is for the purpose of maximizing the cutting capacity by making more cutting on the entry part En side than on the exit part Ex side during the cutting operation. In addition, the upper groove 1150 may be located over the exit portion (Ex) and the entry portion (En), may be located only in the entry portion (En).

In the upper groove 1150, the first right side surface 1151 is inclined at an angle θ2 while being in the upper right direction, and the first left side surface 1153 may include a substantially vertical portion. In this case, the angle θ2 may be induced to enter along the inclined first right side 1151 when the workpiece enters the upper groove 1150 during the cutting operation, thereby preventing rapid entry and impact thereof. The depth D2 of the first right side surface 1151 and the first left side surface 1153 may be from the top surface 1110 to the first bottom portion 1152.

In addition, the cutting unit 1100 has a predetermined first curvature R1 at a portion where the upper surface 1110 and the first right side surface 1151 are in contact with each other, and the first bottom portion 1152 has a concave shape with a second curvature R2. And a third curvature R3 at a portion where the upper surface 1110 and the first left surface 1153 are in contact with each other. Here, in the cutting operation, the first curvature R1 may be processed so that the workpiece contacted with the upper surface 1110 may smoothly enter the inclined first right side surface 1151. In addition, during the cutting operation, the third curvature R3 induces easy exit while reducing the impact generated when the workpiece is brought into contact with the first left surface 1153 through the groove, thereby reducing the impact and It can be processed to be suitable for induction of exit. When the first bottom portion 1152 is concave in front and is processed to the second curvature R2, when the top surface of the cutting portion 1100 is worn out and the first bottom portion 1152 is exposed, the bottom surface is horizontally flat. Smoother work than can be induced. In this case, the second curvature R2 may be processed to naturally connect the first curvature R1 and the third curvature R3.

Meanwhile, the fixing part 1200 is a medium for fixing the cutting part 1100 to the cutting link 2000 (see FIG. 6), and is fixed to the cutting link 2000 in a state in which the cutting part 1100 is attached to the upper surface. Can be. Here, the driving link 3000 may be installed by connecting the cutting links 2000. In this case, the fixing part 1200 may be the same cutting material as the cutting part 1100, or may be any one of a metal, a nonmetal, an alloy, or a synthetic resin material for fixing the cutting part 1100. The fixing part 1200 may have the same length and width as the cutting part 1100, and the height H3 may be lower than the height H2 of the cutting part 1100.

In addition, a lower surface groove 1220 of a predetermined depth D3 may be processed on the lower surface of the fixing part 1200. The lower surface groove 1220 is a groove for reducing the friction load between the workpiece and the cutting portion 1100 instead of the upper surface groove 1150 when the cutting portion 1100 is worn down to the lower surface groove 1220. At this time, the lower surface groove 1220 may be processed in the entry portion (En) around the center line (C). The lower surface groove 1220 includes a second left side surface 1223 inclined left and right downward, a first vertical right side surface 1151 that is substantially vertical, and a second bottom portion 1222 which is convexly processed at a constant curvature R3. It can be provided. In addition, the lower surface groove 1220 may be disposed on the right side of the center line C and may be processed to have a depth D3 that penetrates the cutting unit 1100 through the fixing unit 1200. The depth D3 of the lower surface groove 1220 may be equal to or shorter than the depth D1 of the upper surface groove 1150. Here, the inclination angle θ2 of the second left side surface 1223 may be the same as or similar to the inclination angle θ2 of the first right side surface 1151, and the curvature R2 of the second bottom portion 1222 may be the first bottom. It may be the same as or similar to the second curvature R2 of the part 1152. In this case, the curvature R1 and / or curvature R2 may be processed at a portion where the lower surface 1210 and the second left side surface 1223 contact and / or a portion where the lower surface 1210 and the second right side surface 1221 contact. And the curvature may not be processed. In addition, the second left surface 1223 may have a predetermined length L5 from the right end of the fixing part 1200. In addition, the first right side surface 1151 and the second left side surface 1223 may be spaced apart from each other at a predetermined vertical distance L6.

Meanwhile, the cutting tip 1000 according to the present invention may be manufactured using only the cutting part 1100, and the cutting part 1100 may be manufactured by being stacked on the fixing part 1200. In addition, when only the cutting unit 1100 is manufactured, the lower surface groove 1220 may be processed. At this time, the depth D1 of the upper groove 1150 and the inclination angle θ2 of the first right side surface 1151, the depth of the first left side surface 1153 and the first right side surface 1151 according to the size of the cutting unit 1100. The depth D3 of the lower surface groove 1220, the inclination angle θ2 and the curvature R2 of the second left surface 1223 may be varied together with the D2 and the curvatures R1, R2, and R3.

<Example>

Hereinafter, an embodiment in which the optimum dimensions are described in order to manufacture the cutting tip 1000 will be described.

The length L1 of the cutting tip 1000 may be about 10 to 14 mm, the height H1 may be about 5 to 6 mm, and the width W may be about 4 to 6.5 mm.

The inclination angle θ1 of the inclined surface 1120 may be approximately 15 to 17 °, and the length L2 may be 2 to 3 mm. In this case, when the inclination angle θ1 is less than 15 °, since the inclination angle θ1 is similar to the horizontal, the end of the cutting part 1100 may be damaged due to the impact when the workpiece is in contact with the workpiece. In addition, when the inclination angle θ1 exceeds 17 °, the contact angle with the workpiece becomes large, and an impact is applied to the cutting portion 1100, which may cause cracking or damage.

The length of the second flat surface L4 may be about 3.5 to 4.5 mm.

The curvature R1 in the upper groove 1150 is approximately 0.2 to 0.7. Curvature R2 may be approximately 0.7 to 0.8, curvature R3 may be approximately 0.7 to 1.3, and depth D1 may be approximately 2.3 to 3 mm.

The depth D2 of the first left side surface 1153 and the first right side surface 1151 may be about 1.5 mm to about 2 mm.

The inclination angle θ2 of the first left side surface 1153 may be approximately 18 to 22 °.

The curvature R2 of the first bottom portion 1152 in the upper groove 1150 may be about 0.7 to 0.8.

The height H3 of the fixing part 1200 may be 1 to 2 mm.

The curvature R2 of the second bottom portion 1222 in the lower surface groove 1220 may be approximately 0.7 to 0.8.

The length L5 from the second right side surface 1221 of the lower surface groove 1220 to the tip may be 2.5 to 3.5 mm.

The inclination angle θ2 of the second left surface 1223 may be approximately 18 to 22 °.

The vertical distance L6 between the first right surface 1151 of the upper groove 1150 and the second left surface 1223 of the lower groove 1220 may be 2.1 to 2.5 mm.

On the other hand, as an example, the specification for the cutting tip 1000 actually produced in the optimum dimensions, angles and curvatures will be described.

The length L1 of the cutting tip 1000 is 11.9 mm, the height H1 is 5.5 mm, and the width W may be 4.7 mm or 5.7 mm.

The inclination angle θ1 of the inclined surface 1120 may be 15.95 °, and the length L2 may be 2.5 mm.

The length of the second flat surface L4 may be 4 mm.

The curvature R1 of the portion where the first right side surface 1151 and the top surface contact each other in the upper groove 1150 is 0.5, and the curvature R2 of the first bottom portion 1152 is 0.75, and the first left side surface 1153 is The curvature R3 of the portion where the upper surface is in contact may be 1 and the depth D1 may be 2.5 mm.

The depth D2 of the first left side surface 1153 and the first right side surface 1151 may be 1.75 mm, and the inclination angle θ2 of the first left side surface 1153 may be 20 °.

The height H3 of the fixing part 1200 may be 1.5 mm.

The curvature R2 of the second bottom portion 1222 in the lower surface groove 1220 may be 0.75.

The length L5 from the second right side surface 1221 of the lower surface groove 1220 to the tip may be 3 mm.

The inclination angle θ2 of the second left surface 1223 may be 20 °.

The vertical distance L6 between the first right side surface 1151 of the upper surface groove 1150 and the second left side surface 1223 of the lower surface groove 1220 may be 2.38 mm.

As described above, those skilled in the art will understand that the present invention can be implemented in other specific forms without changing the technical spirit or essential features. Therefore, the above-described embodiments are to be understood in all respects as illustrative and not restrictive. The scope of the present invention is shown by the following claims rather than the detailed description, and all changes or modifications derived from the meaning and scope of the claims and equivalent concepts should be construed as being included in the scope of the present invention. do.

1000: cutting tip
1100: cutting part 1110: top
1120: inclined plane 1130: first plane
1140: second plane 1150: top groove
1151: first right side 1152: first bottom portion
1153: first left side
1200: Gogo 1210: If
1220: bottom groove 1221: second right side
1222: second bottom portion 1223: second left side
2000: Cutting Link
3000: Driving link
4000: Chain.

Claims (13)

The upper surface 1110 is manufactured to have a predetermined length (L1), a predetermined height (H2), a predetermined width (W), the upper surface 1110, the upper surface grooves are processed to a predetermined width and a predetermined depth (D1) while the front upper surface, the front and rear surfaces are opened It includes; cutting unit 1100 having a 1150;
The upper groove 1150 is disposed on the front surface of the first right side inclined upward by a predetermined angle θ2 in a right upward direction in order to prevent breakage due to interference with the passing workpiece while being positioned in front of the moving direction of the workpiece. 1151, a first left side surface 1153 and a first right side surface 1151 which are located rearward with respect to the moving direction of the workpiece and are processed smaller or vertically than an angle θ2 in preparation for an impact with the workpiece. And a first bottom portion 1152 which is connected to the first left surface 1153 to be concave and processed to a predetermined curvature R2.
The first right side surface 1151 and the first left side surface 1153 are processed at the same height D2 vertically from the first bottom portion 1152 to the top surface 1110,
The upper surface 1110 is inclined upward at a predetermined angle (θ1) from the side end of the entry portion while being inclined upward by a predetermined length (L2) and inclined surface 1120 for cutting the workpiece while alleviating the impact of the workpiece to enter. The first flat surface 1130 and the top groove 1150 which are processed by a predetermined distance L3 from the point where the inclined surface 1120 ends to the first right side surface 1151 of the top groove 1150 to cut the workpiece. And a second flat surface 1140 which is processed by a predetermined distance L4 from the first left side surface 1153 to the exit portion Ex side end to cut the workpiece.
A portion where the first right side surface 1151 and the first flat surface 1130 contact each other is processed to a predetermined curvature R1 to prevent damage due to contact as the workpiece passes, and the first left side surface 1153 and The second flat surface (1140) is in contact with the cutting tip of the chain saw is made of a curvature (R3) larger than the curvature (R1) to prevent damage caused by the collision of the moving workpiece.
In claim 1,
The lower surface of the cutting unit 1100 is provided with a lower surface groove 1220,
The lower surface groove 1220 is located at the entrance portion En with respect to the center line C on the front surface, and is processed to a second curvature R2 convexly convex, with a second right surface 1221 smaller or perpendicular to the angle θ2. A second bottom portion 1222 and a second left side surface 1223 inclined at a predetermined angle θ2 in a left downward direction to the second right side surface 1221 and the front end of the entry portion En. Has a certain distance (L5),
The first right surface 1151 of the upper groove 1150 and the second left surface 1223 of the lower groove 1120 are separated by a predetermined vertical distance (L6) cutting tip of the chain saw.
The method of claim 1 or 2,
And a fixing part 1200 manufactured to have a predetermined length L1, a predetermined height H3, and a predetermined width W to be attached to the lower surface of the cutting part 1100.
The lower part of the fixing part 1200 is processed in a predetermined width and a predetermined depth (D3) while the front and rear, the front and the rear is open, processed only the fixing part 1200 or the fixing part 1200 and the cutting part 1100 The lower surface groove 1220 processed over,
The bottom groove 1220 has a vertical second right side surface 1221, a second bottom portion 1222 processed at a constant curvature R2 in a convex shape on the front side, and a second left side inclined at a predetermined angle θ2 toward the bottom It has a surface 1223, has a predetermined length (L5) from the second right side surface 1221 to the front end of the entry portion (En) side,
The first right surface 1151 of the upper groove 1150 and the second left surface 1223 of the lower groove 1120 are separated by a predetermined vertical distance (L6) cutting tip of the chain saw.
In claim 3,
The length L1 is 10 to 13mm, the height H1 is 5 to 6mm, the width W is 4 to 6.5mm, the inclination angle θ1 is 15 to 17 °, and the length L2 is 2 to 3 mm, length L4 is 3.5-4.5 mm, curvature R1 is 0.2-0.7, curvature R2 is 0.7-0.8, curvature R3 is 0.7-1.3, depth D1 is 2.3 ~ 3mm, depth D2 is 1.5-2mm, inclination angle θ2 is 18-22 °, height H3 is 1-2mm, length L5 is 2.5-3.5mm, length L6 Is 2.1 to 2.5mm,
The length L1 is 11.9 mm, the height H1 is 5.5 mm, the width W is 4.7 mm or 5.7 mm, the inclination angle θ1 is 15.99 °, the length L2 is 2.5 mm, length L4 is 4 mm, curvature R1 is 0.5, curvature R2 is 0.75, curvature R3 is 1, depth D1 is 2.5 mm, depth D2 is 1.75 mm, tilt angle (θ2) is 20 °, height H3 is 1.5 mm, length L5 is 3 mm, and length L6 is 2.38 mm cutting tip. delete delete delete delete delete delete delete delete delete

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