CN111673102B

CN111673102B - Cutting accessory and application thereof

Info

Publication number: CN111673102B
Application number: CN202010472894.XA
Authority: CN
Inventors: 孙思叡
Original assignee: Shanghai Nagoya Precision Tools Co ltd
Current assignee: Shanghai Nagoya Precision Tools Co ltd
Priority date: 2016-06-06
Filing date: 2016-06-06
Publication date: 2024-03-26
Anticipated expiration: 2036-06-06
Also published as: CN107457439A; WO2017211194A1; CN107457439B; CN111673102A

Abstract

A cutting accessory comprises a blade part setting area, a cutter body connecting area and an extrusion action part. The blade part setting area is provided with a patch or a coating for forming a cutting edge, and the blade body connecting area at least comprises an assembling part which is connected with the blade body. The extrusion part comprises an extrusion processing part for extruding an object to be processed, forming a support and a guide for the accessory through the extrusion processing part, extruding and polishing the surface cut by the blade part, and improving the smoothness, straightness and roundness. The cutting accessory adopts the mode that the cutting accessory is provided with the blade part to replace the integral blade part, is beneficial to reducing the material use of the blade part material, reduces the use cost, and is suitable for processing in modes of turning, milling, drilling and the like.

Description

Cutting accessory and application thereof

The invention provides a cutting accessory and a divisional application thereof according to the application date of 2016, 6 and 201610397444.2.

Technical Field

The present invention relates to a tool for cutting, and more particularly, to a cutting accessory which is applied to the manufacture of a cutting tool to improve the manufacturing efficiency of the cutting tool.

Background

A cutter is a tool used for cutting machining in machine manufacturing, also called a cutting tool. Since most tools are machine-based and are used to cut metal materials, the term "tool" is generally understood to mean a metal cutting tool. However, with the development of material science, various materials have been widely used in the production and processing of products, such as: engineering plastics and carbon fiber composites, etc. (CN 203401118U). The tool can be divided into the form of a cutting accessory machining surface: a plurality of cutters for processing various outer surfaces, a hole processing cutter, a thread processing cutter, a gear processing cutter, a cutting cutter and the like.

The structure of the working part of the cutter is composed of three types, namely an integral type, a welding type and a mechanical clamping type. The whole structure is that a cutting edge is made on a cutter body; the welding structure is to braze the blade to the steel cutter body; the mechanical clamping structure is two, one is used for clamping the blade on the cutter body, and the other is used for clamping the brazed cutter head on the cutter body. Large diameter cemented carbide tools are typically made in welded or mechanically clamped configurations.

In cutting operations, the cutting edges become dulled with use, and frequent blade replacement, regrinding, or even whole tool replacement is required, resulting in significant machining costs. An indexable tool (see fig. 1) is thus created, and when one tip is sharpened and dulled, the other tips are used after the insert is indexed, so that the tool can be changed or reshuffled to achieve continued machining, which is not only convenient for changing, but also greatly saves time and cost for cutting.

Inserts for indexable tools are commonly shaped as: triangle (see fig. 2), quadrangle (see fig. 3), pentagon, convex triangle, circle (see fig. 4), diamond (see fig. 5), and the like. The blade is clamped in a groove hole or a blade seat formed in the blade body in a movable connection mode such as a screw, for example: chinese patent No. ZL03809683.8 discloses a cutting tool comprising a cutter body having at least one pocket therein adapted to receive a cutting insert cartridge assembly.

Chinese patent No. ZL200680033825.7 discloses a milling cutter for chip removing machining, comprising a milling cutter body having a plurality of cutting insert seats connected to the ends of the milling cutter body, the milling cutter body being formed to cooperate with cutter attachment means at axially opposite ends thereof, indexable cutting inserts being secured in the cutting insert seats. Each of the indexable cutting inserts has the basic shape of a truncated pyramid, a top surface of each indexable cutting insert faces a chip removing end of a milling cutter, and a main cutting edge of the indexable cutting insert extends from the top surface of the indexable cutting insert in a direction toward a bottom surface of the indexable cutting insert.

Chinese patent application 201210582143.9 discloses an indexable cutting insert having an upper surface, an opposite lower surface, and a peripheral side surface. An indexable cutting insert main cutting edge is formed on the upper peripheral edge, and an adjacent major rake surface is on the upper surface. At least two main cutting edges have different insert axial rake angles at equivalent index points along the main cutting edges, and at least two main rake surfaces have different rake surface profile angles at a flat section perpendicular to the main cutting edges and containing the insert axis.

Chinese patent application 201310119151.4 discloses a cutting insert comprising a plate-shaped insert body, the insert body being defined by an upper surface, a lower surface, side surfaces and recesses, the side surfaces and recesses being three, the three side surfaces and the three recesses being arranged at intervals, each side surface and each recess being connected between the upper surface and the lower surface, the recesses being formed by a peripheral locating surface and cutter grooves provided at two diagonal positions of the peripheral locating surface, the cutter grooves intersecting with the upper surface or the lower surface to form a main cutting edge, the cutter grooves intersecting with the side surfaces to form side cutting edges, the main cutting edge being connected with the side cutting edges to form a cutting edge group. The blade has the characteristics of simple and compact structure, strong universality, convenience in use, high cost performance and the like.

The present cutters for forming machines are usually manufactured by pre-forming the cutter blade into a desired shape and then fixing/welding the cutter blade to the cutter body. Not only is the production and processing process lengthy and the quality control difficult, but also the dull blade needs to be regrind or even the cutter is discarded, and the repeatability is low. Although the indexable tool achieves reuse and quick replacement of the insert by rotating the insert by one angle, it is necessary for the forming process to stack a plurality of inserts to obtain the desired edge form, which is equivalent to a reduced number of cutting edges, resulting in a multiple reduction in cutting efficiency, and in which any one of the inserts becomes dull, the angular adjustment of a single insert is difficult to re-form the desired edge form.

Welding tools, particularly shaped welding tools, often have their edge profile shaped to various shapes depending on the machining requirements. Therefore, when the whole blade is required to be replaced after the blade is polished for a limited number of times, the blade body itself must be repeatedly welded and unwelded in each replacement process, and the material aging is caused by heating the blade body, so that the service life of the blade body is shortened, and the use cost is increased.

Disclosure of Invention

It is an object of the present invention to provide a cutting accessory that is easy to assemble, secure, disassemble and replace with a cutter body.

Another object of the present invention is to provide a cutting tool, which is easily combined with a hard material to form a cutting tool, and which is not easily thermally denatured during the combination process such as welding.

It is still another object of the present invention to provide a cutting tool which is easy to perform metal machining such as milling and which provides better rigidity and stability than conventional steels.

It is still another object of the present invention to provide a cutting accessory for use in the manufacture of cutting tools to improve the efficiency of cutting tool manufacture, particularly the manufacturing and use of forming machine tooling cutting tools.

It is a further object of the present invention to provide a cutting accessory for use in the manufacture of cutting tools to increase the recycling rate of cutting tools, particularly forming machine cutting tools, and to reduce manufacturing and use costs.

The tungsten alloy containing more than 60w/w percent of tungsten is used for manufacturing cutting tools, particularly used as cutting accessories, so that the cracking rate is remarkably reduced, the yield of products is improved, and the cutting tools can be suitable for machining modes such as turning, milling, drilling and the like after being assembled with a tool body. The tungsten alloy of the invention contains one or more metals of iron, copper and nickel, and specifically comprises the following components: tungsten alloys with high specific gravity and high density such as ferrotungsten, copper tungsten and nickel tungsten. These tungsten alloys also contain one or more metals of chromium, manganese, cobalt, etc., but are not cemented carbides used for machining cutting edges in the tool industry.

The cutting accessory provided by the invention is made of tungsten alloy containing more than 60w/w% of tungsten, and the tungsten alloy is not hard alloy for processing a blade part in the cutter industry.

The other cutting accessory provided by the invention is made of tungsten alloy containing more than 60w/w% of tungsten and comprises a blade part setting area and a cutter body connecting area. The patch (e.g., diamond) is fixed to the blade-setting region by one or more means such as screws, pins, welding or bonding, or a coating (e.g., DLC-like diamond coating, i.e., diamond-like film coating) is applied thereto. The cutter body connecting area at least comprises an assembling part, and the assembling part is connected with the cutter body, such as: and the assembly part is connected with the cutter body in a mode of arranging the assembly part in the cutter body connecting area.

The cutting accessory provided by the invention is plate-shaped or columnar, and can be manufactured into derivative cutting accessories with various shapes by adopting processing modes such as lap joint combination or cutting, for example: but are not limited to, stepped, toothed, columnar, etc.

The cutting accessory provided by the invention can also adopt a diamond patch, or be mechanically fixed (such as a bolt), or adopt a matrix containing a coating or a non-coating, such as: but are not limited to, cemented carbide, cermets, cubic boron nitride, and other powder metallurgy sintered materials.

The cutting accessory provided by the invention is characterized in that more than 2 assembly parts are preferably selected, such as: but are not limited to, through holes, blind holes, counter bores, faces, grooves, etc. The assembly part is connected with the cutter body through the assembly part, such as: the mounting portion is mechanically coupled to the cutter body and is engageable with the mounting portion to mechanically secure the cutting accessory to the cutter holder. Useful fittings are, for example: but are not limited to, screws, bolts, rivets, wedges, dowels, clamps, and the like. The assembly part can be assembled with the assembly part in the following ways: but are not limited to, screws and internally threaded holes, rivets and holes, mortise and tenon assembly, press plates and fixing surfaces, press plates and grooves, and the like. The assembly part is also connected with the cutter body in a welding or bonding mode, such as: by means of welding rods or soldering paste, resin glue and the like.

The invention provides another cutting accessory, which at least comprises a first outer surface, a second outer surface and a third outer surface, wherein the third outer surface is intersected with the first outer surface and the second outer surface, and an extrusion part is formed at the intersection. The extrusion portion includes an extrusion processing portion to extrude the object to be processed. The fitting is supported and guided by the pressing action portion, and the surface cut by the blade portion is pressed and polished. Compared with the traditional blade type forming machine processing cutter, the processing quality in the aspects of finish, straightness, roundness and the like is obviously improved.

When the cutting tool is mounted on the tool body and cutting is performed, the blade portion acts on the object to be machined before the pressing portion.

The invention provides another cutting accessory which is plate-shaped and comprises a first outer surface, a second outer surface and a third outer surface, wherein the third outer surface is used as one side surface of the accessory to intersect with the first outer surface and the second outer surface, and an extrusion action part is formed at the intersection.

The cutting accessory provided by the invention is fixed on the cutter body through the upper assembly part, and is not required to be fixed in a welding mode, so that the quick replacement of the cutting part can be realized.

The cutting accessory provided by the invention is used as a molding processing part, and can be processed after being assembled on the cutter body so as to meet the molding processing requirements of different parts; or the accessory is processed into a standard component before the accessory is assembled on the cutter body so as to meet the requirement of quick replacement of the accessory in large-scale processing.

The cutting accessory provided by the invention is used as a forming processing part and comprises

A front outer surface, which includes a front working end,

and a pressing portion including a pressing portion.

The extrusion processing part provides an appearance matched with an object to be processed, and meets the requirement of molding processing. Such as: for the hole forming process, the extrusion process portion is arcuate, which matches the radius of curvature of the hole.

The outer surface is understood to be a generic term outlining and normalizing the exposed surfaces of the fitting form. The front outer surface is the general term for each surface which is in front according to the moving direction of the fitting. The rear outer surface is the generic term for each surface that is located rearward according to the direction of movement of the fitting. It will be appreciated that the direction of movement of the fitting varies, as do the front and rear outer surfaces on the fitting.

The cutting accessory provided by the invention can be lapped and combined or cut into derivative accessories with various shapes, such as: but are not limited to, stepped, toothed, columnar, etc.

The invention provides another cutting accessory which comprises a first arm, a second arm and at least 1 assembling part matched with a fixing piece, wherein the angle of a dihedral angle formed by a first plane passing through the axis of the first arm and a second plane passing through the axis of the second arm is more than 0 degree and less than 180 degrees.

The invention provides another cutting accessory which comprises a first arm, a second arm and at least 1 connecting hole, wherein the angle of a dihedral angle formed by a first plane passing through the axis of the first arm and a second plane passing through the axis of the second arm is more than 0 degrees and less than 180 degrees.

The cutting accessory provided by the invention is characterized in that the connecting hole is arranged on the first arm, the second arm or both the first arm and the second arm.

The invention provides another cutting accessory, which comprises

A first arm provided with at least 1 first connection hole;

the second arm is provided with at least 1 second connecting hole;

the angle of dihedral angle formed by the first plane passing through the first arm axis and the second plane passing through the second arm axis is > 0 degrees and < 180 degrees.

The invention provides another cutting accessory, which comprises

A first arm provided with at least 1 first connection hole;

the second arm is provided with at least 1 second connecting hole;

the first arm axis intersects the second arm axis at an intersection angle of > 0 degrees and < 180 degrees.

The invention provides another cutting accessory which is L-shaped and comprises a first arm, a second arm and at least 1 connecting hole.

The other cutting accessory provided by the invention is L-shaped and comprises a first arm, a second arm and at least 1 connecting hole, wherein the connecting hole is arranged along the axial direction of the first arm and the axial direction of the second arm independently or simultaneously.

The invention provides a cutting accessory, wherein the lateral direction of a first arm comprises a first extrusion action part.

The cutting accessory provided by the invention further comprises a first blade part which is arranged at the front end of the first arm.

The cutting accessory provided by the invention has the advantages that the front end of the second arm forms the second extrusion action part.

The cutting accessory provided by the invention further comprises a second blade part which is arranged at the lateral direction of the second arm.

The first arm of the cutting accessory provided by the invention is columnar or plate-shaped.

The second arm of the cutting accessory provided by the invention is columnar or plate-shaped.

The axial length of the first arm of the cutting accessory is greater than or equal to that of the second arm.

The cutting accessory provided by the invention is provided with at least 1 first connecting hole along the axial direction of a first arm.

The cutting accessory provided by the invention is provided with at least 1 second connecting hole along the axial direction of the second arm.

The dihedral angle of the cutting accessory provided by the invention, which is formed by the first plane passing through the first arm axis and the second plane passing through the second arm axis, is more than 15 degrees and less than 140 degrees.

The cutting accessory provided by the invention has a dihedral angle of 90 degrees formed by a first plane passing through the first arm axis and a second plane passing through the second arm axis.

According to the cutting accessory provided by the invention, the first arm axis is intersected with the second arm axis, and the intersection angle is 90 degrees.

The connecting hole of the cutting accessory is used for fixing and assembling the cutting accessory.

The specific modes of fixing or assembling the cutting accessory provided by the invention on the cutter are as follows: but are not limited to threads, dowel pins, mortise and tenon structures, rivets and compacts, and the like, and bonding agents for thread locking, thread sealing, planar sealing, holding and structural bonding such as: but are not limited to, photo-curable adhesives, hot melt adhesives, or combinations of solvent/water-based adhesives with components of epoxy resins, acrylates, polyurethanes, silicones, modified silanes, or butyl rubber.

The technical scheme of the invention has the beneficial effects that:

the cutting accessory provided by the invention is made of tungsten alloy containing more than 60w/w percent of tungsten, is suitable for machining in modes of turning, milling, drilling and the like, is beneficial to improving the manufacturing efficiency, solves the problem that hard alloy can only be machined in a low-efficiency mode of cutting or polishing and the like, and simultaneously has better rigidity and thermal stability compared with other materials. After the blade made of steel, hard alloy or PCD material is welded on the cutter body, the cracking rate is about 8%, and after the blade is welded on the cutter body, the cracking rate is lower than 0.2% by adopting a cutting accessory made of tungsten alloy containing more than 60w/w% of tungsten, so that the precision and the yield of processed products are remarkably improved.

Compared with the traditional steel structure tool rest and tool bit, the cutting accessory provided by the invention has better hardness and rigidity and longer service life, and meanwhile, the quality problems of cracking and the like are easy to generate due to the large difference of the thermal expansion coefficients of materials when the traditional steel structure tool rest and tool bit are welded with hard alloy. After the tungsten alloy material is adopted, the thermal expansion coefficient of the material similar to that of the patch material can improve the welding success rate.

Compared with the cutting edge made of steel, hard alloy or PCD, the cutting accessory is easier to process into a specific shape according to practical requirements, can also be matched with the shape of a cutter body, and is easier to manufacture cutters and mount and dismount the accessory because a plurality of assembling parts for mechanical fixation are arranged at any position of a cutter body connecting area.

The cutting accessory provided by the invention is made of tungsten alloy, has better assembly and disassembly with the cutter body, and improves the manufacturing efficiency of the cutter by installing parts to the cutter body. The cutting accessory is provided with the blade part to replace the integral blade part, so that the update of the cutter is realized, the processing efficiency of the product is improved, the material use of the blade part material is reduced, and the use cost is reduced.

The cutting accessory provided by the invention can be used for a cutting tool in whole or in a part after cutting, so that the low-cost rapid production and manufacturing of the forming machine machining tool are realized, and meanwhile, the blade of the forming machine machining tool is replaceable.

The cutting accessory provided by the invention is beneficial to accelerating the manufacture and maintenance of a processing cutter of a forming machine. In particular for the manufacture, replacement and maintenance of tools for pressing parts.

Compared with the indexable tool, the cutting accessory provided by the invention has the advantages that the processing speed of the processing tool for the forming machine is obviously improved, and the processing dimensional accuracy, the surface finish and the straightness and roundness of the hole are obviously improved.

Compared with a cutter with a welded and fixed blade, the cutting accessory provided by the invention enables the blade to be easy to replace, and the production cost is obviously reduced.

Drawings

FIG. 1 is a schematic diagram of an embodiment of an indexable tool;

FIG. 2 is a schematic view of an embodiment of an insert for an indexable tool;

FIG. 3 is a schematic view of another embodiment of an insert for an indexable tool;

FIG. 4 is a schematic view of another embodiment of an insert for an indexable tool;

FIG. 5 is a schematic view of another embodiment of an insert for an indexable tool;

FIG. 6 is a schematic view of the structure of an embodiment of an indexable tool for forming;

FIG. 7 is a schematic view of another embodiment of an indexable tool for forming;

FIG. 8 is an enlarged schematic view of the arrangement of the individual inserts of the indexable tool for forming;

FIG. 9 is a schematic view of an embodiment of a cutting workpiece according to the present invention;

FIG. 10 is a schematic view of another embodiment of a cutting workpiece according to the present invention;

FIG. 11 is a schematic view of another embodiment of a cutting workpiece according to the present invention;

FIG. 12 is a schematic view of a cutting tool for cutting a workpiece using the present invention;

FIG. 13 is a schematic view showing the structure of an embodiment of a cutting tool for forming a machined part according to the present invention;

FIG. 14 is an enlarged schematic view of the structure of FIG. 8 from left to right;

fig. 15 is an enlarged schematic view of the structure of fig. 13 viewed from left to right;

FIG. 16 is a schematic top view of another embodiment of a cutting workpiece according to the present invention;

FIG. 17 is a schematic view of another embodiment of a cutting workpiece according to the present invention;

FIG. 18 is a schematic view of another embodiment of a cutting workpiece according to the present invention;

FIG. 19 is a schematic view of another embodiment of a cutting workpiece according to the present invention;

FIG. 20 is a schematic view of another embodiment of a cutting workpiece according to the present invention;

FIG. 21 is a schematic view of another embodiment of a cutting workpiece according to the present invention;

FIG. 22 is a schematic view of another embodiment of a cutting workpiece according to the present invention;

FIG. 23 is a schematic view of another embodiment of a cutting workpiece according to the present invention;

FIG. 24 is a schematic view of another embodiment of a cutting workpiece according to the present invention;

fig. 25 is a schematic view of another embodiment of a cutting workpiece according to the present invention.

Detailed Description

The technical scheme of the present invention is described in detail below with reference to the accompanying drawings. The embodiments of the present invention are only for illustrating the technical scheme of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the technical scheme of the present invention, which is intended to be covered by the scope of the claims of the present invention.

Fig. 1 is a schematic structural view of an embodiment of an indexable tool, which includes a tool body 100, and a plurality of indexable inserts 210 disposed on the tool body 100 for cutting an object to be cut. After the tip has been dulled, the other, intact tips are adjusted to the operative position in contact with the object to be cut by rotating the blade 210 to continue the cutting process.

When the object to be cut has a shape requirement, a higher requirement is placed on the blade form of the cutting tool. Fig. 6 is a schematic structural view of an embodiment of an indexable tool for forming, and fig. 7 is a schematic structural view of another embodiment of an indexable tool for forming. As shown in fig. 6 and 7, curve 300 outlines the blade tip configuration required for the forming process, and a single or a smaller number (e.g., 2) of blades may not be available through angular adjustment, requiring stacking of several indexable diamond blades 220 to achieve the forming process. Fig. 8 shows an embodiment of obtaining a complete curved edge with several indexable diamond inserts 220, by using 4 diamond inserts 220 stacked at different angles to obtain a first angle 310 and a second angle 320, the edge end to edge land difference D1, the edge side relief highest and the edge land distance D2. As can be seen from fig. 8, there is a superposition between the blades, and there are also a number of difficulties in the manufacture of the cutter due to the need to provide 4 corresponding blade seats to accommodate the diamond-shaped blades 220, on the other hand, in use, since four slots are required to machine a complete molded section, the cutter can cut a material with a depth of cut by one rotation, which is effectively equivalent to a single-edge cutter, and the machining efficiency is low.

Fig. 17, 18, 19, 20, 21, 22, 23, 24 and 25 show schematic structural views of several embodiments of the cutting workpiece of the present invention. The cutting workpiece 400 of the present invention is made of a tungsten nickel iron alloy, and includes a cutting zone 430 and a cutter body coupling zone 440. The cutting zone 430 is used to make a blade suitable for turning, milling, drilling, etc. The blade body attachment region 440 includes at least one mounting portion 422, the mounting portion 422 being adapted to receive a mounting member (not shown). In embodiments, the cutting workpiece is fabricated into derivative cutting accessories of various shapes by lap joint combination, cutting or other processing modes.

Fig. 14 is an enlarged view of the structure of fig. 8 from left to right, and the cutting tip 230 is applicable only to cutting (Blade) processing and not to extrusion (Margin) processing for a tool formed using a plurality of indexable inserts.

Fig. 16 is a schematic top view of an embodiment of a cutting workpiece according to the present invention. As shown in fig. 16, the cutting workpiece of the present invention includes a first outer surface 500, a second outer surface 600, and a third outer surface 700, the third outer surface 700 intersecting the first outer surface 500 and the second outer surface 600, and the intersection (i.e., a partial area surrounded by the first outer surface, the second outer surface, and the third outer surface) forming a pressing portion including a pressing portion to perform pressing. The first outer surface and the second outer surface are machined separately or simultaneously to form a blade (not shown) to perform the cutting process.

The cutting workpiece of this embodiment is plate-shaped, and is lap-jointed to form derivative cutting workpieces of various shapes, such as: but are not limited to, stepped, toothed, columnar, etc.

Fig. 9 is a schematic structural view of another embodiment of the cutting workpiece according to the present invention, fig. 10 is a schematic structural view of another embodiment of the cutting workpiece according to the present invention, and fig. 11 is a schematic structural view of another embodiment of the cutting workpiece according to the present invention. As shown in fig. 9, 10 and 11, the cutting workpiece 400 of the present invention includes a first arm 410, a second arm 420, and at least 1 fitting portion to be fitted with a fixture. In this embodiment, the form of the fitting portion is a hole, and the fitting portion is fitted with a fixing member such as a screw, a bolt, a rivet, a wedge, a dowel, or the like. At least 1 first connection hole 411 is formed in the first arm 410, and at least 1 second connection hole 412 is formed in the second arm 420.

In this embodiment, the cutting workpiece 400 has an "L" shape, and the axial length of the first arm 410 is greater than the axial length of the second arm 420. The first arm axis intersects the second arm axis at an angle > 0 degrees and < 180 degrees, especially 90 degrees.

The first arm 410 is cylindrical or plate-shaped and laterally includes a press-processed portion 412. The first blade 413 is provided at the front end thereof according to the processing requirement such that when the cut workpiece is used for processing, the first blade 413 performs cutting processing on the object first and then performs extrusion by the extrusion processing portion 412.

The second arm 420 has a columnar shape or a plate shape, and includes a press-processed portion 422 at its tip. The second blade portion 423 is provided at the front end thereof according to the processing requirement such that when the cut workpiece is used for processing, the second blade portion 423 performs cutting processing on the object first and then performs extrusion by the extrusion processing portion 422.

The assembly part matched with the fixing piece can also be a partial surface on the cutting workpiece, and is matched with the pressing plate. One end of the pressing plate is mechanically connected with the cutter body, and the other end of the pressing plate is contacted with a local surface on the cutting workpiece and applies acting force to the cutting workpiece. When the cut workpiece is used as a shaping processing part to shape an object, the pressing plate is fixed by the part of the cut workpiece facing the shaping processing part and prevents/inhibits sliding/vibration.

The whole or part of the cutting workpiece according to the embodiment can be directly applied to the cutting tool as a forming portion to realize forming. Or according to the requirement of the object to be formed and processed, the whole or part of the cutting workpiece is used as a forming processing part to be assembled on the cutting tool, and then the required cutting edge shape is processed. Or the cutting workpiece is first machined into a standard piece and then assembled with the cutting tool to meet the need for quick replacement of the cutting workpiece during machining (see fig. 13). Fig. 12 is a schematic view showing the structure of an embodiment of a cutting tool for cutting a workpiece according to the present invention, wherein a portion is cut from the cutting workpiece 400, fixed or assembled to a holder through a connecting hole therein, and then a tip form having a first angle 310 and a second angle 320, a head D1 between a tip end and a bottom, and a distance D2 between a highest point of a protrusion of a tip side is machined, as shown in fig. 12. Compared with a cutter with a blade fixed by welding, the cutter is not required to be fixed by welding, and the quick replacement of the cutting part can be realized. Compared with the indexable insert for producing the cutter shown in fig. 6, 7 and 8, the number of insert seats can be significantly reduced (from 4 to 1) by adopting the cutting workpiece of the embodiment, the processing time is greatly shortened, and the manufacturing efficiency is significantly improved (by 4 times), on the other hand, in use, if four cutter grooves are arranged as in the comparative example, four forming cutting edges can be arranged, so that the cutter can cut 4-cut-deep-position materials in one rotation, and the use efficiency of 4 times can be realized.

Fig. 15 is an enlarged schematic view of the structure of fig. 13 viewed from left to right. As shown in fig. 15, the cutting workpiece provided by the present invention is used as a forming processing portion, which includes an extrusion portion 350. The extrusion portion 350 further includes an extrusion portion 351 having an arc shape, which is adapted to be extrusion-molded in accordance with the curvature of the hole to be processed.

Claims

1. A cutting accessory, comprising:

the blade part setting area is provided with a patch or a coating for forming a cutting edge;

the cutter body connecting area at least comprises an assembling part, and the assembling part is connected with the cutter body;

the extrusion part comprises an extrusion processing part which is arc-shaped and is matched with the curvature of a hole to be processed so as to extrude an object to be processed, the extrusion processing part is used for extrusion forming processing, the extrusion processing part is used for supporting and guiding accessories, extruding and polishing the surface cut by the blade part, and improving the smoothness, straightness and roundness.

2. The cutting accessory of claim 1, wherein the cutting accessory is made of a tungsten alloy containing more than 60w/w% tungsten.

3. The cutting accessory of claim 2, wherein the tungsten alloy further comprises one or more of chromium, manganese, and cobalt.

4. The cutting accessory of claim 1, wherein the cutting accessory is provided with more than 1 mounting portion.

5. The cutting accessory of claim 1, wherein the cutting accessory comprises at least a cylindrical portion.

6. The cutting accessory of claim 1, comprising at least a first outer surface, a second outer surface, and a third outer surface, the third outer surface intersecting the first outer surface and the second outer surface to form a crush zone therebetween, the crush zone comprising a crush process.

7. The cutting accessory of claim 6, wherein the cutting accessory has a plate-like shape, and the third outer surface intersects the first outer surface and the second outer surface as a side surface of the cutting accessory, the intersection forming an extrusion.

8. The cutting accessory of claim 6, wherein the blade portion acts on the object to be machined prior to the press-working portion.

9. A cutting accessory for cutting, characterized in that the cutting accessory is formed by overlapping and combining or cutting the cutting accessory according to any one of claims 1 to 8.

10. The fitting for cutting as set forth in claim 9, comprising a first arm, a second arm, and at least 1 fitting portion for mating with a fixture, wherein an angle of dihedral angle formed by a first plane passing through the first arm axis and a second plane passing through the second arm axis is > 0 degrees and < 180 degrees; wherein the assembly portion is engageable with the fitting to secure the cutting assembly to another object.

11. The fitting for cutting as defined in claim 10, wherein said fitting portion and fitting are assembled in a press plate and a fixing surface.

12. The fitting for cutting as claimed in claim 10, wherein the fitting portion is assembled with the fitting by screw and internally threaded hole, rivet and hole or mortise and tenon fitting.

13. The fitting for cutting as set forth in claim 9, comprising a first arm, a second arm, and at least 1 connecting hole, wherein the angle of dihedral angle formed by a first plane passing through the first arm axis and a second plane passing through the second arm axis is > 0 degrees and < 180 degrees.

14. The fitting for cutting as defined in claim 13, wherein said attachment hole is provided in the first arm.

15. The fitting for cutting as defined in claim 13, wherein said attachment hole is provided in the second arm.

16. The fitting for cutting as defined in claim 13, wherein the attachment hole is provided in both the first arm and the second arm.

17. The fitting for cutting as set forth in claim 9, characterized by comprising

A first arm provided with at least 1 first connection hole;

the second arm is provided with at least 1 second connecting hole;

the angle of the dihedral angle formed by the first plane passing through the first arm axis and the second plane passing through the second arm axis is more than 0 degrees and less than 180 degrees.

18. The fitting for cutting as set forth in claim 10, characterized by comprising

A first arm provided with at least 1 first connection hole;

the second arm is provided with at least 1 second connecting hole;

the first arm axis intersects with the second arm axis, and the intersection angle is more than 0 degrees and less than 180 degrees.

19. The fitting for cutting according to any one of claims 10 to 18, wherein the cutting fitting is "L" -shaped.

20. The fitting for cutting according to any one of claims 10 to 18, wherein said first arm is columnar or plate-like.

21. The fitting for cutting according to any one of claims 10 to 18, wherein said second arm is columnar or plate-like.

22. The fitting for cutting as claimed in any one of claims 10 to 18, wherein the first arm is laterally formed with a first pressing portion.

23. The fitting for cutting according to claim 22, further comprising a first blade portion provided at a front end of said first arm such that the first blade portion performs cutting processing on the object before pressing by the first pressing portion.

24. The fitting for cutting according to any one of claims 10 to 18, wherein the front end of the second arm forms a second pressing portion.

25. The fitting for cutting of claim 24, further comprising a second blade portion disposed laterally of said second arm such that said second blade portion performs cutting of the object prior to compression by the second compression portion.

26. The fitting for cutting according to any one of claims 10 to 18, wherein the axial length of said first arm is greater than or equal to the axial length of said second arm.

27. The fitting for cutting according to any one of claims 10 to 18, wherein at least 1 first connecting hole is provided along an axial direction of the first arm.

28. The fitting for cutting according to any one of claims 10 to 18, wherein at least 1 second connecting hole is provided along an axial direction of the second arm.

29. The fitting for cutting according to any of claims 10-18, wherein the first plane passing through the first arm axis and the second plane passing through the second arm axis form a dihedral angle of > 15 degrees and < 140 degrees.

30. The fitting for cutting as defined in any one of claims 10-18, wherein a dihedral angle formed by a first plane passing through said first arm axis and a second plane passing through said second arm axis is 90 degrees.