JPH02131873A - Polishing grindstone of chip saw and the like - Google Patents

Abstract

PURPOSE:To polish the rake face and rake angle of a chip saw by one grindstone according to the both sides reversal or the chip saw by forming a main body in a truncated conical shape and providing a grindstone layer forming a conical surface on the outer periphery of the end part thereof. CONSTITUTION:The main body 1 of a polishing grindstone (a) of a chip saw, etc., is formed in the cup shape of a truncated conical shape. A grindstone layer 6 forming a conical face is provided on the outer periphery of the end part of this main body 1. In case of polishing the chip saw by the polishing grindstone (a), the angle of the grindstone (a) for the chip saw is converted and by reversing the both sides of the chip saw according thereto the rake face and rake angle of the chip saw can be polished by one grindstone (a).

Description

[Detailed description of the invention] a. Purpose of the Invention (Field of Industrial Application) The present invention is a whetstone for polishing tipped saws and similar blades used for cutting, machining, etc. of various materials. More specifically, the present invention relates to a grinding wheel for a tipped saw, etc., which can conveniently and ideally grind each part of a cutter by providing a grinding wheel layer with a conical surface on a truncated conical main body.

(Prior Art) Conventionally, a grindstone b for polishing a chipped saw or similar blades used for cutting and machining various materials, etc., has a grindstone b on the edge side of a dish-shaped main body 28 that is close to a flat surface, as shown in FIG. 13. A grinding wheel layer 29 is provided on the front so as to form a flat surface, and this grinding wheel layer 29 is used to polish the scooping surface of the tipped saw 31 equipped with a carbide tip 30 and to polish the scooping angle. be.

(Problem to be Solved by the Invention) When the above-described conventional polishing whetstone is used for polishing the right-slanted scooping surface and the left-slanted scooping surface of the chip saw 31, the grinding wheel b is placed on the surface of the grindstone layer 29. 14 and 15 so that it matches the scooping surface of the chib saw 31.
When changing the rake angle as shown in the figure and polishing one with the rake angle tilted to the right and the other with the rake angle tilted to the left, place the whetstone b so that the surface of the whetstone layer 29 matches the rake angle, and also adjust its position. 1st
As shown in Figure 6 and Figure 17, the position has to be changed, so there are two types: one for polishing the scooping surface and one for polishing the scooping angle.
Not only does the need for a grinding machine increase the equipment cost, but replacing the chip saw with two machines is time consuming and reduces work efficiency, and due to individual differences between the two machines. , errors occur in the scooping surface polishing and scooping angle polishing, and furthermore, the grindstone b, in which the grindstone layer 29 is provided on the front side of the edge of the dish-shaped main body 28, which is close to a flat surface, is easily deformed by external force. Therefore, when the grindstone layer 29 is pressed against the chip saw b during polishing, there is a problem in that the main body 28 is deformed and chattering occurs, resulting in significantly poor polishing accuracy.

The present invention was made to solve the above-mentioned conventional problems, and by improving the shape of the main body and the installation position of the grinding wheel layer, and by simply changing the relative angle of one grinding wheel to the chip saw, one machine can be To provide a grinding wheel for a chip saw, etc., which is capable of polishing both the scooping face and the ripping angle with a single grinding wheel of a machine, and moreover, the main body is not deformed during polishing, so that polishing can be performed efficiently and with high precision. The purpose is

mouth. Achievement of the Invention (Means for Solving the Problem) The means of the present invention for achieving the above-mentioned object is a grindstone having a conical surface on the outer periphery of the end edge side of the main body formed in the shape of a truncated conical cup. There are two types of polishing wheels: one is a grinding wheel for a chip saw, etc., which has a layer, and the other is a grinding wheel for a chip saw, etc., in which a grinding wheel layer is provided in front of the edge of the main body so as to form a conical surface opposite to the main body.

The main body of the above-mentioned whetstone is made of light and strong light metal, special synthetic resin, or other suitable material.
By forming a truncated conical cup with a diameter of about 40 to 80 inches, and providing a grindstone layer to be described later on the outer periphery of the edge,
Even if the edge side described above is formed thin enough to fit into the narrow blade chamber of a tipped saw, the cup-shaped main body will not be able to handle it during polishing.
Since it receives external force as a compressive force, it has extremely high deformation resistance, and is designed to rotate without chatter while retaining its original shape.

The grindstone layer attached to the edge side of the main body of the grindstone mentioned above is made by bonding and fixing known diamond powder etc. to the main body in a layered manner with a binder in order to enable polishing of hard chips. When installed, it is formed into a conical surface parallel to the main body, and by simply changing the angle of inclination of the main body with respect to the tipped saw, both the scooping surface and the rake angle can be polished by one grindstone of one machine.

In addition, when the above-mentioned grindstone layer is provided on the front side of the end edge of a truncated conical cup-shaped main body, it is formed so as to have a conical surface opposite to the conical surface of the main body, and the grindstone layer is It is designed so that the rake angle can be polished in the same way regardless of whether it faces to the right or left, while keeping the direction and angle relative to the chip saw constant.

(Function) A grinding wheel such as a tipped saw configured as described above,
When this is attached to the drive shaft as shown in Fig. 2 and its axis S is swung to the right by an angle α1 with respect to the reference line The left side surface of the conical grinding wheel layer provided on the outer periphery of the part coincides with the scooping surface facing right as shown in Figure 2, and the axis center line S as shown in Figure 3.
When is swung to the left by an angle α2 with respect to the reference line X, the right surface of the grindstone layer coincides with the scooping surface facing left as shown in FIG.

Further, as shown in FIG. 4, when the axis S of the grinding wheel drive shaft is swung back and left by an angle β1 with respect to the horizontal reference line Y, the right surface of the grinding wheel layer coincides with the rightward scooping angle, As shown in Fig. 5, when the axis line is swung to the left after an angle β2 with respect to the reference line Y, the left surface of the grinding wheel layer coincides with the leftward rake angle, so
Along with the angle change of the grinding wheel described above, if the tipped saw is turned over and the scooping surface and scooping angle are aligned with the surface of the grinding wheel layer, one grinding wheel of one grinder can be used to match the scooping surface of the tipped saw and the scooping angle of the tipped saw. Both sides of the rake angle can be polished easily and accurately. During this polishing, the truncated cup-shaped main body receives an external force in the direction of compressing the cup, so it is formed thin. Even if it is, it has extremely high deformation resistance and will not deform and cause chatter during polishing, so polishing can be performed reliably with high precision.

(Example) Next, an example of a grindstone for a chip saw or the like according to the present invention will be described based on the drawings.

1 to 5 of the drawings, reference numeral 1 denotes the main body of the grinding wheel a, which is formed of a light alloy into a truncated conical cup shape with an angle α of 50°, and its edge side is shown in Figs. 2 to 5. As shown in Figure 5, the wall is thin so that it can fit into the narrow blade chamber of the tipped saw 3 with the carbide tip 2 attached, and a fitting hole 5 for the drive shaft 4 is provided in the center of the bottom. It is provided.

Reference numeral 6 denotes a grindstone layer made of diamond or the like, which is fixed to the outer periphery of the main body 1 on the green end side, and its surface is formed into a conical surface that coincides with the outer surface of the main body 1.

When the grindstone a shown in the above embodiment is attached to the drive shaft 4 and its axial center line S is swung to the right by α1=25° with respect to the reference line X in the front-rear direction as shown in FIG. As shown in the same figure, the left surface of the chip 2 matches the right-facing scooping surface of the chip 2, and when the axis S is moved to the left by αz=25° with respect to the reference line X as shown in FIG. , as shown in the figure, the grindstone layer 6
The right surface of the chip 2 matches the right-facing scooping surface of the chip 2, and when the axis S is moved to the left by β = 25 degrees with respect to the horizontal reference line Y as shown in Fig. 4, , as shown in the same figure, the right surface of the grinding wheel layer 6 matches the leftward rake angle of the chip 2, and the axis S is set to the horizontal reference line Y as shown in FIG. When swung to the right after 25 degrees, the left surface of the grinding wheel layer 6 matches the leftward rake angle of the chip 2 as shown in the same figure, so the grinding wheel a is attached to one machine and set as described above. The angle conversion and accompanying tip saw 3
By performing the front-back reversal operation, both the rake face and rake angle of the chip saw 3 could be accurately and easily polished with one grindstone of one machine.

Incidentally, during the polishing, the chip saw 3 is placed to the left or right of the center of the whetstone a as shown in FIG. 6, or biased upwards as shown in FIG. If the blade is fed out in the axial direction, the polished surfaces of the rake face and the rake angle will both become arcuate as shown in Figures 6 and 7, and the edge of the blade will stand up well, improving cutting performance. In addition, at this time, move the whetstone 2 to 3 times in the axial direction.
If the grinding wheel was vibrated at an amplitude of III, the entire grinding wheel a was used evenly, so that the grinding wheel a could be worn evenly and accurate polishing could be performed.

In Figs. 8 to 10, 1' indicates the main body of another grinding wheel a', which is formed of a light alloy into a truncated conical cup shape with an angle θ of 130°. A conical surface with an angle θ' of 10 degrees opposite to the circular slope of the main body 1' is formed on the front face of the end edge side, and a fitting hole 5' for the drive shaft 4' is provided at the center of the bottom part. .

Reference numeral 6' denotes a grinding wheel layer made of diamond or the like, which is bonded and fixed to the front surface of the edge side of the main body 1, and its surface is formed into a conical surface having an angle θ' of 70° opposite to the outer surface of the main body 1.

The above-mentioned grindstone a' is attached to the drive shaft 4' as shown in FIG.
-35 degrees to the right, and the tip saw is placed so that the right rake corner of the chip 2' is in contact with it, or the left rake corner is in contact with it as shown in FIG.
By performing the reversing operation in Step 3, you can easily and accurately grind the rake angle, and in this case as well, as shown in Figure 7,
In this case as well, if the chip saw 3' is tilted upward with respect to the center of the saw and the cutting is made while swinging in the axial direction,
Since the surface to be polished is arc-shaped, the edges are well-defined, and accurate polishing is achieved due to the average wear of each part of the whetstone.

Figures 11 and 12 show a polishing machine suitable for polishing the chip saw 3 using the grindstone a shown in the embodiment, in which a work table 8 is provided at the front of the machine stand 7; A cylindrical shaft 9 is erected, a swivel base 10 is attached to the cylindrical shaft 9, a cutter holder 12 is mounted on the swivel base 10 and is movable back and forth and left and right by a cross slider 11, and the holder 12 is provided with its support. The tipped saw 3 is attached by fitting the hole 14 into the shaft 13, and the feeding means 15 for intermittently feeding one blade at a time is engaged with the tipped saw 3, and the grinding wheel a of the tipped saw 3 is
The direction, position, angle, etc. of the work table 8 can be freely changed, and a moving table 17 is provided on the rear side of the work table 8 to advance and retreat the horizontal guide 16 in the front and back direction. 18, the vertical guide 18
The elevator plate 19 is supported by a horizontal support shaft 2.
A vertical rotation plate 21 that rotates around 0 is attached, and a horizontal rotation i24 that rotates around a vertical support shaft 23 is attached to the front end of the bracket 22 that projects from the vertical rotation plate 21 to the front side. By attaching a motor 27 with a grindstone a attached to a shaft 26 to the motor support portion 25, the front and rear, left and right reference lines X, Y can be set.
By changing the inclination of the axis S of the grinding wheel a relative to the grinding wheel a as shown in FIGS. 2 to 5, the scooping surface and scooping angle of the chip saw 3 can be polished using one grinding wheel a attached to one machine. This makes it easier and more accurate.

C. Effects of the Invention The grinding wheel for a chip saw or the like according to the present invention has a main body formed in a truncated circular shape, and a grinding wheel layer having a conical surface is provided on the outer periphery of the edge thereof. If you turn the chip saw upside down accordingly, you can polish both the scooping surface and the scooping angle with one grindstone of one machine. The equipment cost is low, the efficiency of licking work is high without the need to change tip saws, and if the scooping face and ripping angle are polished with one machine, the conditions for both polishing are constant and accurate. Polishing results are obtained.

A whetstone that has a truncated conical cup-shaped main body with a conical whetstone layer on the outer periphery retains its original shape without deforming and does not cause chattering even when compressive force is applied from the outside during polishing. Therefore, highly precise polishing is performed.

When a whetstone that has a whetstone layer on its outer periphery is polished while being fed in the axial direction, the polished surface becomes arcuate and the edge stands out well, resulting in excellent blade sharpness.

When the whetstone that is sent in the axial direction is shaken, its working position is changed, so that the whetstone wears evenly and enables accurate blade shape formation of the tipped saw.

It has the following unique effects.

[Brief explanation of the drawing]

FIG. 1 is a front view showing half of an embodiment of the grinding wheel for a chip saw or the like according to the present invention. 2 to 5 are longitudinal sectional front views showing the state of polishing of the chip saw according to the above. FIG. 6 and FIG. 7 are explanatory diagrams showing the state in which the tipped saw blade is polished so as to have a sharp edge. FIG. 8 is a front view showing a half longitudinal section of another embodiment same as the above. Figure 9 and 1
Is the 0 diagram of the chip saw according to the same as above? FIG. 3 is a longitudinal sectional front view showing the iJI polished state. FIG. 11 is a partially longitudinal side view showing a polishing machine suitable for polishing a chip saw according to the above. FIG. 12 is a plan view of the same as above. FIG. 13 is a front view showing a half longitudinal section of a conventional grinding wheel for a chip saw or the like. FIGS. 14 to 17 are longitudinal sectional front views showing the state of polishing of the chip saw according to the above. In the figure, a and a' are whetstones, 1 and 1' are main bodies, 6
and 6' is a grindstone layer. Younger brother I Xihoki Hayazu O Hayazu Houki Yume IO 2l Yume II Xidai I6 Diagram Haya 15

Claims (2)

[Claims] (1) A grinding wheel for a chip saw or the like, characterized in that a grinding wheel layer having a conical surface is provided on the outer periphery of the edge side of a main body formed in a truncated conical cup shape. (2) A grinding wheel for a chip saw or the like, characterized in that the grinding wheel layer according to claim (1) is provided on the front surface of the end edge side of the main body so as to form a conical surface opposite to the main body.