Hard alloy helical blade trimming knife

Abstract

The utility model discloses a hard alloy helical blade trimming knife, which comprises a knife handle, a cutting part and a bearing part, the cutting part adopts a helical cutting blade design, the back of the cutting part adopts a fine thread structure, and the cutting part is provided with a chip groove; the bearing part is of a double-bearing structure design, the outer end of the bearing part is sleeved with a clamping spring used for positioning the bearing part, the cutting part is provided with a cutting edge back, the cutting part is provided with a circumferential edge relief angle a, and the chip groove and the rear cutter face part of the cutting part are polished. The small spiral angle b of the spiral cutting edge is set between 15 degrees and 25 degrees, the chip groove is designed to be of an arc-shaped high-capacity spiral structure, and the chip groove adopts a mirror face cutter grinding technology. In the long-time high-strength machining process, the cutter can keep good cutting performance and is not prone to being broken off, and the maintenance cost and the replacement frequency of the cutter are greatly reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to wood processing cutter technical field, concretely is a kind of hard alloy spiral blade trimming knife. BACKGROUND

[0002] Wood processing cutter refers to the cutter that wood is processed into required shape and size by cutting method.These cutters play a crucial role in the wood processing industry, they are various, each has its own characteristics, and together complete the transformation process of wood from original state to finished product.The main functions of wood processing cutter include:

[0003] Shape and size processing: wood processing cutter processes wood into required shape and size by cutting action, to meet the needs of furniture manufacturing, building decoration and other fields.Improve production efficiency: the wood processing cutter of machine can realize automation and semi-automation production, greatly improve the production efficiency of wood processing.Guarantee processing quality: the sharpness and precision of cutter directly affect the processing quality of wood.High-quality cutter can ensure that the cutting surface of wood is smooth and smooth, and reduces burr and defect.Promote technological innovation: with the continuous development of wood processing technology, the research and application of new cutter promote the innovation and development of wood processing technology.

[0004] However, in the actual use of the existing technology, in the wood milling cutter trimming knife type, the common ones include ordinary double-edge trimming knife, lengthened trimming knife, three-blade / four-blade trimming knife, double-inclined trimming knife, protruding trimming knife, double-bearing trimming knife, etc.The cutting edge of the current trimming knife is mostly straight, and its manufacturing materials include high-speed steel, tool steel, alloy steel, hard alloy, etc., among which hard alloy shows obvious advantages in hardness and rigidity and other practical conditions.However, the traditional straight trimming knife still has many problems in actual use, such as unstable cutting process, easy to produce large cutting force fluctuation, and then cause vibration, which not only affects the processing quality, but also reduces the service life of the cutter, and is not satisfactory in noise control and wood chip processing. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a kind of hard alloy spiral blade trimming knife to solve the problems of traditional straight trimming knife in actual use, such as unstable cutting process, easy to produce large cutting force fluctuation, and then cause vibration, which not only affects the processing quality, but also reduces the service life of the cutter, and is not satisfactory in noise control and wood chip processing.

[0006] To achieve the above purpose, the utility model provides the following technical scheme: including handle, cutting site and bearing part, cutting site adopts spiral cutting edge design, the back of cutting site adopts fine thread structure, and cutting site is provided with chip removal groove.

[0007] The bearing part adopts a double-bearing structure design, a clamping spring for positioning the bearing part is sleeved at the outer end of the bearing part, the cutting position is provided with a cutting edge back, the cutting position is provided with a peripheral edge relief angle a, and the chip flute and the relief surface part of the cutting position are polished.

[0008] Preferably, the small spiral angle b of the spiral cutting edge is set to be between 15 degrees and 25 degrees.

[0009] Preferably, the chip flute adopts a circular-arc high-capacity spiral structure design, and the chip flute adopts a mirror surface grinding process.

[0010] Preferably, the cutting edge back is lower than the cutting edge part of the cutting position by a range of 0.3 mm to 1.2 mm.

[0011] Preferably, the peripheral edge relief angle a is set to be between 40 degrees and 55 degrees.

[0012] Preferably, the whole tool adopts a fine-grained cemented carbide material.

[0013] Compared with the prior art, the tool has the beneficial effects that:

[0014] The small spiral angle design of the cutting edge enables the chips to be smoothly discharged along the spiral chip flute during actual wood processing, and the chips cannot be accumulated in the cutting area, thereby reducing the fluctuation of the cutting force and reducing the possibility of vibration. The double-bearing structure of the bearing part can stably support the tool during high-speed rotation of the tool, ensures that the cutting edge always maintains a correct cutting direction, improves the processing precision, effectively fixes the double bearing through the clamping spring, guarantees the stability of the bearing during long-time work, prolongs the service life of the bearing, and further guarantees the reliability of the whole tool. The design that the cutting edge back is lower than the cutting edge part of the cutting position reduces unnecessary friction with the workpiece during the processing process, not only reduces the wear of the tool, but also enables the chips to rapidly separate from the tool, and improves the chip removal efficiency.

[0015] The reasonable design of the peripheral edge relief angle a enables the tool to more smoothly cut into and cut out during wood cutting, reduces the damage to wood fibers, improves the processing surface quality, the polishing treatment of the chip flute and the relief surface part of the cutting position enables the tool to have smaller resistance during cutting and more uniform cutting force, effectively avoids the generation of the tool vibration phenomenon, the processed part surface is smoother and more flat, the application of the fine-grained cemented carbide material enables the tool to bear greater cutting force and have better wear resistance, even during long-time high-intensity processing, the tool can also maintain good cutting performance and is not easy to break, thereby greatly reducing the maintenance cost and replacement frequency of the tool. BRIEF DESCRIPTION OF DRAWINGS

[0016] Fig. 1 It is a whole structure front view of the hard alloy spiral blade trimming knife of the utility model;

[0017] Fig. 2 It is a right view cutaway view of the hard alloy spiral blade trimming knife of the utility model;

[0018] Fig. 3 It is a clamping spring structure schematic view of the hard alloy spiral blade trimming knife of the utility model.

[0019] In the figure: 1, knife handle; 2, cutting part; 3, bearing part; 4, clamping spring; 5, chip removal groove; 6, cutting edge back. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be apparently and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without making creative efforts fall within the protection scope of the utility model.

[0021] Please refer to Figs. 1-3 The utility model provides a kind of hard alloy spiral blade trimming knife technical scheme: including knife handle 1, cutting part 2 and bearing part 3;

[0022] Cutting part 2 adopts helical cutting edge design, and the small helix angle b of helical cutting edge is set between 15 degrees to 25 degrees. This helical cutting edge design can effectively improve the chip removal effect, so that the chip discharge is more stable and smooth. The back of cutting part 2 adopts fine thread structure, so that the rigidity of the tool is enhanced through the fine thread structure. In the machining process, it can better withstand cutting force, ensure the stability of cutting. Cutting part 2 is provided with chip removal groove 5, and chip removal groove 5 adopts circular arc high-capacity spiral structure design. The actual cutting rake angle of cutting part 2 can be increased through chip removal groove 5, so as to optimize the cutting performance. Chip removal groove 5 adopts mirror surface grinding process, and mirror surface grinding process is suitable for high-efficiency batch production. When processing wood, it can effectively avoid the sticking phenomenon of knife, and significantly reduce noise;

[0023] The bearing part 3 adopts a double bearing structure design, so that the smoothness of the cutting process of the cutting part 2 is improved through the double bearing structure design, and at the same time the double bearing structure can better support the stress of the cutting tool during high-speed rotation, reduce vibration, thereby improve the machining precision and surface quality, the bearing part 3 is sleeved with a circlip 4 for positioning the bearing part 3, so that the rolling smoothness of the bearing part 3 during work is ensured through the circlip 4, and through the effective positioning of the circlip 4, displacement or shaking of the bearing part 3 during high-speed rotation is avoided, further guaranteeing the stability of the overall structure of the cutting tool, the cutting part 2 is provided with a cutting edge back 6, and the cutting edge back 6 is lower than the cutting edge part of the cutting part 2, and the lower range is 0.3mm to 1.2mm, which ingeniously reduces the friction area of the cutting tool with the workpiece during machining, thereby reducing the friction force, not only optimizing the chip removal effect, but also making the chip more easily removed, and effectively preventing the occurrence of the chip sticking phenomenon, further improving the cutting efficiency, the cutting part 2 is provided with a circumferential edge back angle a, and the circumferential edge back angle a is set to be between 40 degrees and 55 degrees, the chip removal groove 5 and the relief surface part of the cutting part 2 are polished, after polishing, a sharp cutting edge structure is formed, which can effectively reduce the cutting resistance when machining wood, so that the surface of the machined part is smooth and has no vibration marks, and the machining quality of the product is improved, the overall cutting tool adopts a fine-grained cemented carbide material, which has the characteristics of high strength and high wear resistance, and the ultra-fine particle structure effectively avoids the problem that the cutting body is easily broken during use, greatly prolongs the service life of the cutting tool, reduces the replacement frequency of the cutting tool, and improves the production efficiency.

[0024] Working principle: In the straightening and rounding edge machining process of wood processing parts, the hard alloy spiral edge edge trimming cutter of the utility model plays a key role, and the selection of the edge trimming cutter can significantly improve the product quality, effectively shorten the processing cycle and reduce the processing cost. The sharp and durable edge greatly improves the machining efficiency.

[0025] For example, in the design of the small helix angle of the cutting edge, in the actual processing of wood, the small helix angle enables the chips to be smoothly discharged along the helical chip groove 5, and the chips are not accumulated in the cutting area, thereby reducing the fluctuation of the cutting force and reducing the possibility of vibration. The double bearing structure of the bearing part 3 can stably support the tool when the tool rotates at high speed, ensures that the cutting edge always maintains the correct cutting direction, improves the processing accuracy, the effective fixation of the circlip 4 to the double bearing ensures the stability of the bearing during long time work, prolongs the service life of the bearing, and further ensures the reliability of the whole tool. The design of the cutting edge back 6 lower than the cutting edge part of the cutting part 2 reduces unnecessary friction with the workpiece during processing, not only reduces the wear of the tool, but also enables the chips to quickly separate from the tool, improves the chip removal efficiency, and the reasonable design of the peripheral edge clearance angle a enables the tool to cut into and cut out more smoothly when cutting wood, reduces the damage to the wood fibers, and improves the processing surface quality. The polishing treatment of the chip groove 5 and the relief surface part of the cutting part 2 makes the tool have smaller resistance and more uniform cutting force during cutting, effectively avoids the generation of the tool shock phenomenon, and the processed part surface is smoother and more flat. The application of the fine-grained cemented carbide material enables the tool to withstand greater cutting force and have better wear resistance. Even in the long-term high-intensity processing process, the tool can also maintain good cutting performance and is not easy to break, thereby greatly reducing the maintenance cost and replacement frequency of the tool.

[0026] The helical cutting edge design of the utility model realizes smooth cutting in and cutting out, effectively reduces the fluctuation of the cutting force, thereby inhibits the vibration trend, improves the safety and stability of processing, the unique combination of the design of the chip groove 5 and the design of the cutting edge back 6 ensures the smoothness of chip removal, reduces the chip sticking phenomenon, improves the processing efficiency, the double bearing design further enhances the stability of cutting, improves the processing accuracy and surface quality, compared with the traditional flat trimming cutter, the helical edge design significantly prolongs the service life of the tool, reduces the use cost of the tool, and the trimming cutter of the utility model has lower noise and produces less wood chips per unit time during the processing process, and has better environmental protection performance.

[0027] It should be noted that in this document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0028] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A hard metal spiral edge parting tool, characterized in that: Including handle (1), cutting site (2) and bearing part (3), cutting site (2) adopts helical cutting edge design, the back of cutting site (2) adopts fine thread structure, cutting site (2) is provided with chip flute (5); The bearing part (3) adopts double bearing structure design, the outer end of the bearing part (3) is sleeved with a circlip (4) for positioning the bearing part (3), the cutting site (2) is provided with a cutting edge back (6), the cutting site (2) is provided with a peripheral edge relief angle a, the chip flute (5) and the relief surface part of the cutting site (2) are polished.

2. A hard metal spiral edge parting tool according to claim 1, characterized in that: The small helix angle b of the helical cutting edge is set to be between 15 degrees and 25 degrees.

3. A hard metal spiral edge parting tool according to claim 2, characterised in that: The chip flute (5) adopts a circular arc high capacity helical structure design, and the chip flute (5) adopts a mirror surface sharpening process.

4. A hard metal spiral edge parting tool according to claim 3, characterized in that: The cutting edge back (6) is lower than the cutting edge part of the cutting site (2), and the lower range is 0.3mm to 1.2mm.

5. A hard metal spiral edge parting tool according to claim 4, characterized in that: The peripheral edge relief angle a is set to be between 40 degrees and 55 degrees.

6. A hard metal spiral edge parting tool according to claim 5, characterized in that: The tool as a whole adopts fine particle cemented carbide material.

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