JP2011025340A - Double-edged cutting tool - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To perform two different kinds of machining work when working a rotating workpiece with a fixed cutting tool only by moving the cutting tool in parallel without replacing the cutting tool or changing the turning direction of the workpiece. <P>SOLUTION: Two kinds of edges having different functions are provided in combination at the tip of a handle of the cutting tool. The cutting edges include, a right (left) single-edged cutting tool, a right (left) faced cutting tool, a right (left) straight cutting tool, a right (left) cutting tool for chamfer, a right (left) corner cutting tool, a right (left) round-end cutting tool, a right (left) female screw cutting tool, a right (left) drilling tool, an end surface cutting tool, a cut-off tool, a grooving tool, a square corner straight tool, a point corner straight tool, a male screw cutting tool, a forming tool, or the like. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a cutting tool, and more particularly to a double cutting tool having two types of cutting blades, and a cutting tool device including a socket and a socket holder for holding the double cutting tool.

  The tool according to the present invention is preferably a double-blade tool provided by combining a pair of blades having different functions at the tip of a round bar-shaped handle, and the tool or the tool of a CNC or other machine tool does not rotate stationary. It is used under a processing method in which a workpiece rotates.

  The cutting edge of the cutting tool is ground into two types of blades with different shapes, and two types of processing are performed without having to change the rotation direction of the spindle by moving one cutting tool having two processing blades in parallel during processing. Can be carried out at the same time, with no need to replace the cutting tool, and by changing the relative angle of the cutting tool and the socket, it can be adjusted to different angles.

The cutting tool according to the present invention is a double-edged cutting tool provided with a combination of two types of blades having different shapes and functions at the tip of a rod-shaped handle, and in particular, processing in which a workpiece rotates without rotating the cutting tool. It is used as a CNC lathe or machine tool tool.
The cutting edges are right (left) single-edged tool, right (left) tool, right (left) sword tool, right (left) chamfer tool, right (left) corner tool, right (left) tip tool tool, right (left) Left) Female threaded tool, right (left) drilled tool, end tool tool, parting tool, groove tool tool, flat sword tool, serious tool tool, male thread tool tool, general tool tool, etc. Therefore, machining can be continued without changing the tool during machining or changing the rotation direction of the spindle.

The cutting tool is one of essential tools for machining such as machine tools and CNC lathes, and is a tool that is absolutely necessary for cutting, gear cutting, drilling, and the like.
All currently used cutting tool blades are used for a single machining purpose, and if a different function blade is required during the machining process, the tool must be replaced and replaced. After that, the bite position must be adjusted again to match the workpiece.
Also, when changing to a cutting tool with a different cutting direction, it is necessary to change the rotation direction of the spindle. Also, when used on the socket holder of a CNC lathe, the space occupied by the tool may be increased.

Therefore, it can be said that the conventional byte has the following drawbacks.
1. A conventional cutting tool has only a blade for single-purpose machining, and when the machining purpose is different, the cutting tool must be replaced.
2. In the conventional tool shank part, the tool must be replaced when it is necessary to adjust the tool. This wastes time to replace and adjust the tool, and the workpiece is complex and the tool is not suitable for use. A situation occurs.

  Therefore, the present inventor actively seeks a solution in view of the shortcomings of conventional tools, and as a result of extensive thought and experimentation using their expertise and design / manufacturing experience, they are used more than conventional tools. Invented a double-edged tool that is simple and can be fitted to a socket holder.

JP 2008-272836 A

  The present invention is preferably a double-blade tool configured by combining two blades having different functions at the tip of a handle such as a round bar, and a tool device comprising the tool, a socket and a socket holder.

  The two blades of the double-blade tool are polished for different processing applications, and one end of the shank is preferably chamfered to form a flat chamfer, and the chamfer is V-shaped. A cut V-shaped notch and an inset position reference surface are provided.

The chamfered part can be cut at different angles according to the required purpose.
The socket has a front end portion and a fixed end portion, and a storage space passes through the inside thereof.
The outer end surface of the storage space is a stop surface, and the top is a flat surface.

A kerf is provided at the lower end of the storage space, and both side surfaces are cylindrical surfaces.
Further, the outer peripheral surface of the front end portion has a screw hole penetrating to the storage space perpendicular to the top plane of the storage space.
The fixed end portion of the socket has a flat surface portion, and this flat surface portion can be cut at a different angle according to the socket holder to adjust the processing angle of the cutting tool with respect to the workpiece.

The shank portion is inserted into the socket storage space, and a mounting screw is passed through the socket screw hole to contact the surface of the V-shaped notch of the cutting tool.
The bit is more stably fixed in the socket as the mounting screw is tightened. At the time of processing, after processing using the first blade, the socket holder is directly translated to bring the second blade into contact with the workpiece.
By utilizing the feature that the work piece does not need to be rotated in the same direction to change the rotation direction of the blade edge, it is possible to process differently using different blades of one tool as it is. There is no need to exchange or change the direction of the bytes.

  When machining a rotating workpiece with a fixed tool, two different types of machining can be performed by simply moving the tool in parallel without changing the tool or changing the direction of rotation of the workpiece. Like that.

A first blade and a second blade having different shapes and functions are provided on both sides of a reference line provided in a direction orthogonal to the main axis at one end of the handle portion of the cutting tool.
The cutting edges of the first blade and the second blade are provided so as to be rotated so that the processing can be continued without changing the rotation direction of the workpiece.
This double-edged tool can be used with a socket and socket holder for holding the tool.

  The efficiency of complex machining with machine tools and CNC lathes can be improved.

: A three-dimensional exploded view of a bite device including a bite according to the present invention and its fixture. FIG. 2 is a perspective view of a cutting tool device including a cutting tool according to the present invention and its fixture. : It is sectional drawing of the cutting tool apparatus containing the cutting tool concerning this invention, and its fixture. : A perspective view of a cutting tool according to the present invention. : It is a front view of the cutting tool according to the present invention. : It is explanatory drawing of the usage method of the byte | byte concerning this invention. : It is explanatory drawing of the usage method of the byte | byte concerning this invention. : It is explanatory drawing of the usage method of the byte | byte concerning this invention. : It is explanatory drawing of the usage method of the byte | byte concerning this invention. : It is a three-dimensional exploded view showing another embodiment of a tool attachment according to the present invention. : It is a three-dimensional exploded view showing still another embodiment of the tool attachment according to the present invention. : Is a perspective view showing another embodiment of the cutting tool according to the present invention. : Is a perspective view showing still another embodiment of the cutting tool according to the present invention. : Is an enlarged side view showing the cutting edge of the cutting tool according to the present invention. : Is an enlarged front view showing the cutting edge of the cutting tool according to the present invention. : Is an enlarged side view showing different cutting edges of the cutting tool according to the present invention. : Is an enlarged front view showing different cutting edges of the cutting tool according to the present invention.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS A cutting tool device including a cutting tool according to the present invention and a socket and a socket holder, which are fixtures thereof, will be described below with reference to the drawings.

1 to 3, 1 is a cutting tool, 2 is a socket for holding the cutting tool 1, 3 is a mounting screw, and 4 is a socket holder.
The cutting tool 1 has a blade 11 at its front end and a shank 12 at its rear end, and a handle 13 between the shank 12 and the blade 11.
The shank portion 12 and the handle portion 13 are molded integrally, but the blade portion 11 is attached with a pair of cutting blades made of a carbide tip or the like and polished.

The blade portion 11 is provided with a first blade 111 and a second blade 112 having different functions.
Examples of tools include right (left) single-edged tools, right (left) tools, right (left) sword tools, right (left) chamfer tools, right (left) corner tools, right (left) tip tools, right (Left) Female thread cutting tool, right (left) drilling tool, end face tool, parting tool, groove tool, flat sword tool, serious tool tool, male thread tool, general tool tool, etc. The second blade 112 is appropriately selected from these.

  Further, the outer end side of the shank portion 12 is a chamfered portion 12a that is chamfered and cut into a flat shape, and a V-shaped notch leaving a slight chamfered portion 12a on the inner end portion side of the chamfered portion 12a. An inset position reference surface 12c perpendicular to the chamfered portion 12a is formed on the innermost end shank portion 12 of the chamfered portion 12a.

The socket 2 is integrally molded with a front end portion 21 having a relatively large diameter and a fixed end portion 22 having a relatively small diameter, and a storage space 2a passes through the inside along the central axis. A kerf 2b is provided at the bottom of 2a.
The outermost edge plane of the front end portion 21 is a restraining surface 21c, the upper end of the storage space 2a forms a flat plane 2c, and the inner wall surface between both side edges of the plane 2c and the kerf 2b forms a cylindrical surface 2d. is doing. Further, the outer edge portion of the front end portion 21 has screw holes 21a and 21b penetrating perpendicularly to the flat surface 2c and reaching the storage space 2a, and the fixed end portion 22 has a flat surface portion 22a that is chamfered.

  When the shank portion 12 of the cutting tool 1 is inserted into the storage space 2 a of the socket 2, the chamfered portion 12 a of the shank portion 12 is exactly aligned with the flat surface 2 c of the socket 2, and the mounting screws 3, 31 are attached to the screws of the socket 2. The V-shaped notch 12B of the screwing tool 1 is pressed into the holes 21a and 21b.

When the mounting screws 3 and 31 are tightened more tightly, the mounting screws 3 and 31 are pressed onto the inclined surface of the V-shaped notch 12b, so that the cutting tool 1 enters the storage space more firmly and the cutting tool 1 is completely inside the socket 2. And the fitting reference position surface 12c of the cutting tool 1 is pressed onto the restraining surface 21c of the socket 2 so as to fit closely together to form a tight state in which the flat surface 2c and the two cylindrical surfaces 2d are pressed. The cutting tool 1 is fixed in the storage space 2a completely stably.
Naturally, the stability is further enhanced by stopping the other mounting screw 31 in the other screw hole 271 and pressing the V-shaped notch 12B.

By inserting the fixed end portion 22 of the socket 2 into the socket holder 4 and fixing the mounting screw 41 to the screw hole 4a of the socket holder 4 so as to be fixed on the flat portion 22a, the flat portion 22a corresponds to the angle of the socket holder 4. The position of the socket 2 is automatically corrected.
Regarding the technique for adjusting the angle of the socket holder 4, the patent application proposal No. 098109838, which has been invented by the present inventor and has already applied for a patent, can be referred to.

  As shown in FIG. 4, the blade portion 11 of the bite 1 of the present invention can be a combination of two types of blades, a first blade 111 and a second blade 112 having various known different functions, It can be polished for different processing purposes. (See FIGS. 14 and 15).

As shown in FIGS. 5 to 9, when machining the inside of the workpiece 5 with the cutting tool 1 according to the present invention, for example, when using the first blade 111 first and want to use a different blade The workpiece can be processed with the second blade 112 only by translating the position of the socket holder 4 from side to side.
The directions of the cutting edges of the first blade 111 and the second blade 112 are rotationally symmetric, and machining is performed by the rotation of the workpiece 5 itself. Machining can be continued by simply moving in parallel.

For example, in the state shown in FIGS. 6 and 7, the first blade 111 is directly in contact with the workpiece 5 to perform processing.
The first blade 111 is, for example, a female thread cutting tool, and the second blade 112 is, for example, a groove cutting tool or a chamfering tool.
When switching the blade of the cutting tool 1, the cutting tool 1 is moved in parallel with the socket holder 4 to the position indicated by 1 '. In that case, since the second blade moves to the position 112 ', it can be brought into direct contact with the workpiece 5 to perform another machining operation.

In the example shown in FIG. 9, the first blade 111 at the blade edge is a grooving bite, and the second blade 112 is a boring bit.
The double-edged cutting tool according to the present invention has a first blade 111 and a second blade 112 having different machining functions, and thus the convenience in machining operations is enhanced.

  As shown in FIG. 10 and FIG. 11, the cutting angle formed by the flat surface portion 22a and the kerf 2b of the fixed end portion 22 of the socket 2 is made different to match the socket holder 4 at different angles. Can do.

  According to the present invention, it is not necessary to correct the angle of the cutting tool after the socket 2 is installed in the socket holder 4, and the cutting blade of the cutting tool 1 can be replaced quickly, and no other correction work is required.

  As shown in FIGS. 12 and 13, the product of the present invention has different cutting angles formed by the chamfered portion 12a of the shank portion 12 of the cutting tool 1 and the reference line 10, and the socket 2 and socket holder described above. By utilizing the function that 4 can be coupled at different angles, the cutting edge 11 of the cutting tool can cope with processing of workpieces at different angles.

In summary, the product of the present invention has the following characteristics.
1. By using the first blade 111 and the second blade 112 having different functions of the inventive cutting tool 1, different machining objectives can be achieved without exchanging the cutting tool.
2. The flat surface 2c and the cylindrical surface 2d of the storage space 2a press the shank portion 12 and the chamfered portion 12a, and the inset position reference surface 12c is pressed onto the restraining surface 21c, thereby forming a tight state in which four points are pressed down. The byte is completely fixed in the socket 2.
3. When the mounting screws 3 and 31 come into contact with the V-shaped notch 12b, the cutting tool 1 is pressed by the mounting screws 3 and 31 and pressed against the tighter storage space 2a.
4). Since the cutting angle of the flat portion 22a of the socket 2 can be changed to match the workpiece and the socket holder 4, the cutting tool 1 and the socket 2 can be quickly exchanged, and there is no need to correct the moving angle of the cutting tool. .
5. Since the cutting angle of the chamfered portion 12a of the cutting tool 1 can be changed to match the processing angle of the socket 2 and the workpiece, the cutting tool 1 can be quickly replaced, and there is no need to correct the angle at which the cutting tool advances. .

  In addition, the structure of the cutting tool, socket and socket holder according to the present invention is not limited to the above-described embodiment, but includes a first blade and a second blade which are provided in pairs and have different blade shapes. As long as the shape of the shank portion and the handle portion is arbitrary, the shape of the socket may be changed according to the shape of the shank portion of the bite, and the socket holder may be Any shape can be used as long as it conforms to the shape, and the present invention encompasses all the modifications.

1 Bite 10 Reference line 11 Blade portion 111 First blade 112 Second blade 12 Shank portion 12a Chamfered portion 12b V-shaped notch 12c Insertion position reference surface 13 Handle portion 2 Socket 2a Storage space 2b Cut groove 2c Plane 2d Cylindrical surface 21 Front end portion 21a Screw hole 21b Screw hole 21c Stopping surface 22 Fixed end portion 22a Flat portion 3 Mounting screw 31 Mounting screw 4 Socket holder 4a Screw hole 41 Mounting screw 5 Workpiece

Claims (4)

  In the cutting tool (11) including the blade part (11), the shank part (12), and the handle part (13) connecting them, the first blade (111) having a different shape in the blade part (11), and the second Bite (1) characterized in that it is provided with a blade (112).   The cutting tool according to claim 1, wherein the first blade (111) and the second blade (112) are arranged on both sides of a reference line (10) provided along the central section of the cutting tool (1). 1).   1st blade (111) and 2nd blade (112) are right single blade, left single blade, right facing, left facing, right sword, left sword, right chamfer, right chamfer, left chamfer, right corner, left corner Bit, right-handed round bit, left-handed round bit, right female threaded bit, left female threaded bit, right holed bite, left holed bite, end face bit, parting bite, grooved bite, flat sword bite, serious bite The cutting tool (1) according to claim 1 or 2, wherein the cutting tool is a kind of cutting tool selected from the group consisting of:   A cutting tool comprising the cutting tool (1) according to any one of claims 1 to 3, a socket (2) thereof, and a socket holder (4) for holding the socket (2).

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