CN112935400A

CN112935400A - Reusable hard alloy circular saw blade

Info

Publication number: CN112935400A
Application number: CN202110359339.0A
Authority: CN
Inventors: 陈树林; 陈保鼎; 申言慧; 郭虎刚; 王高飞
Original assignee: Lucheng Lufa Saw Co ltd
Current assignee: Lucheng Lufa Saw Co ltd
Priority date: 2021-04-02
Filing date: 2021-04-02
Publication date: 2021-06-11

Abstract

The invention discloses a hard alloy circular saw blade capable of being repeatedly used. The hard alloy circular saw blade can reduce the use cost of the alloy cutter head, improve the production efficiency, improve the cutting performance and promote the economic benefit. The saw blade comprises a saw blade body and tool bits, wherein tooth-shaped protrusions are uniformly distributed on the outer edge of the saw blade body, two tool bit seats used for placing the tool bits are arranged on two sides of the upper portion of each tooth-shaped protrusion, a partition wall is arranged between the two tool bit seats on each tooth-shaped protrusion, the partition wall and the tool bits on the two sides are fixed together through screws, the two tool bits on each tooth-shaped protrusion are different in thickness, and more than two identical cutting edges are uniformly distributed on the tool bits.

Description

Reusable hard alloy circular saw blade

Technical Field

The invention relates to the technical field of saw blades, in particular to a reusable hard alloy circular saw blade.

Background

In the field of machining technology in the field of industrial manufacturing, saw blades are one of the indispensable tools. Saw blades are a general term for thin circular cutters used to cut solid materials. The hard alloy circular saw blade has the advantages of high rotating speed, good cutting quality and precision, high production efficiency and the like, and can still exert excellent performance in the environment with severe working condition environment. However, the defects in the use performance of the cemented carbide saw blade greatly restrict the exertion of higher performance and the cost requirements of customers, and the specific defects are shown in the following aspects: firstly, the high temperature welding influences, and welding work is accomplished to alloy sword piece and saw bit lamellar body under high temperature environment, and the repeated heating can lead to the fact the decarbonization to the heating region of lamellar body itself, and the tissue changes, and in use causes crack defect easily. Secondly, repeated high-temperature heating can have adverse effects on the rigidity, hardness, strength and stress of the sheet body. Thirdly, the alloy cutter block welded in a fixed mode can only finish cutting by one cutting edge, and cannot be reused after being damaged, so that the use cost of the alloy is greatly increased. Fourthly, under the influence of heat, the effect of the mechanical property and the cutting property of the coating of the alloy cutter block can be seriously reduced in the high-temperature welding process of the hard alloy cutter block coated by the CVD and PVD, so that the hard alloy cutter block cannot be widely applied, and the technical problem to be improved in the field is solved.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide a reusable hard alloy circular saw blade which improves the production efficiency and the cutting performance and simultaneously reduces the utilization cost of an alloy cutter block.

In order to achieve the technical purpose, the invention adopts the following technical scheme:

the utility model provides a repeatedly usable's carbide saw blade, includes the saw bit lamellar body and tool bit, is provided with dentate arch at saw bit lamellar body outer fringe equipartition, and every dentate bellied upper portion both sides are equipped with two tool bit seats that are used for placing the tool bit, are the partition wall between two tool bit seats on every dentate arch, partition wall and both sides tool bit pass through the fix with screw together, and two tool bit thickness are different on every dentate arch, the equipartition has the cutting edge the same more than two on the tool bit.

Preferably, a chip groove is provided at each cutting edge.

Preferably, the two side surfaces of the partition wall of the tooth-shaped protrusion facing the two side tool bits respectively form an included angle of 0.5-2 degrees with the tangential direction in the radial reference plane in opposite inclined directions, and the two side surfaces of the partition wall of the tooth-shaped protrusion facing the two side tool bits respectively form an included angle of 0.5-2 degrees with the radial direction in the radial reference plane in opposite inclined directions.

Preferably, a raised positioning boss is arranged at the cutter mounting hole of the partition wall with the dentate bulge, and taper holes corresponding to the positioning bosses are arranged at two ends of the screw hole of the cutter.

Preferably, the distribution positions of the upper partition walls, the thin cutting heads and the thick cutting heads of the adjacent dentations are opposite in sequence, and the distribution positions of the upper partition walls, the thin cutting heads and the thick cutting heads of the dentations are the same in sequence and are arranged in a staggered mode.

Preferably, all the cutting edges on the cutter head are symmetrically distributed by taking the screw hole axis of the cutter head as a center.

After adopting above-mentioned technical scheme, owing to set up demountable installation, and the tool bit that rotatable installation used sets up a plurality of the same cutting edges on this tool bit, after the alloy sword piece wearing and tearing of sawtooth, can carry out the azimuth rotation to the sword piece blade of wearing and tearing, realize the quick switch-over of cutting edge, a tool bit can be equivalent to a plurality of traditional tool bits to reduce the utilization cost of alloy sword piece, improve production efficiency, and improve cutting performance. The polygonal rotatable bolt fastening type alloy circular saw blade more conveniently and quickly enables the hard alloy cutter block and the ceramic cutter block which are treated by CVD and PVD coatings to be popularized and applied more widely, improves the cutting efficiency of processing special high-alloy and other difficult-to-process materials by times, and generates remarkable economic benefits for the saw blade industry.

Drawings

FIG. 1 is a schematic view of a reusable cemented carbide circular saw blade according to the present invention;

FIG. 2 is an enlarged partial schematic view of the tooth-like projections and the cutting head of FIG. 1;

FIG. 3 is a schematic structural view of the blade body of FIG. 1;

FIG. 4 is an enlarged partial view of the tooth-like projections of the blade body of FIG. 3;

FIG. 5 is a schematic view of a cutting head in one embodiment of the cutting head of the present invention;

FIG. 6 is a schematic view of a second embodiment of a cutting head according to the present invention;

FIG. 7 is a schematic view of a third embodiment of a cutting head according to the present invention;

the reference numbers in the figures are as follows:

1-saw blade body; 101-a dentate bulge; 1011-a partition wall; 1012-positioning a boss; 1013-tool bit slot; 1014, installing a cutter hole; 102-a central hole; 103-mounting holes; 104-hoisting holes; 2, a cutter head; 21-thick tool bit; 22-thin blade; 201-screw hole; 202-a cutting edge; 203-chip space; 3-nails.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments. The following description is only for the purpose of explanation and is not intended to limit the invention.

As shown in fig. 1, 2, 3, 4, 5, 6 and 7, the reusable hard alloy circular saw blade of the present invention comprises a saw blade body 1 and a tool bit 2, wherein toothed protrusions 101 are uniformly distributed on the outer edge of the saw blade body 1, two tool bit seats for placing the tool bit 2 are arranged on two sides of the upper portion of each toothed protrusion 101, a partition wall 1011 is arranged between the two tool bit seats on each toothed protrusion 1, the partition wall 1011 and the two tool bits 2 are fixed together by a nail 3, more than two identical cutting edges 202 are uniformly distributed on the tool bit 2, and the thicknesses of the tool bit seats on two sides of the partition wall 1011 of the toothed protrusion 101 are different, and are respectively used for installing a thin tool bit 21 and a thick tool bit 22.

FIG. 5 is a schematic view of a cutting head in one embodiment of the cutting head of the present invention; in the figure, two tool bits 2, namely a thin tool bit 21 and a thick tool bit 22, are arranged on one dentate bulge 101, and the side surfaces of the thin tool bit 21 and the thick tool bit 22 are the same in shape, but the side surfaces are different in thickness, so that the two tool bits are adapted to the different thicknesses of the two tool bit seats on the dentate bulge 1 at one time. Fig. 6 and 7 show only the shape of one cutting head on one tooth-like projection 101, and the other cutting head on the tooth-like projection 101 has the same shape and different thickness.

Fig. 4 is a partial enlarged view of the blade body at the serrations 101, the head seat of each serration 101 comprising a plurality of faces for contact with the head 2, the surfaces of the partition wall 1011 of one of the dentate projections 101 facing the tool bit 2 on both sides are M-plane and M ' -plane (the M ' -plane is the surface on the back side of the partition wall 1011 in fig. 4 and cannot be seen directly), the M-plane and the M ' -plane are respectively contacted with the side surfaces of the tool bit 2 on both sides, the other planes of the tool bit seat are contacted with the bottom and the back plane of the tool bit 2 and play a role of supporting, the two side faces of the tooth-like projection 101 facing the tool head on both sides in figure 4 are angled in opposite directions of inclination at an angle of 0.5 to 2 deg. to the tangential direction in the radial reference plane, the partition walls 1011 of the serration 101 form angles of 0.5 ° to 2 ° with the radial direction in the radial reference plane in opposite oblique directions toward both side surfaces of the tool bit 2, respectively.

The corner of the tool bit seat where the tool bit 2 protrudes can be provided with a tool bit groove 1013.

The radial reference surface may be located between the side surfaces of the two sides of the saw blade body 1, and is an arbitrary plane parallel to the side surfaces of the two sides of the saw blade body 1, the radial direction of the saw blade body 1 displayed on the radial reference surface is a radial direction, the tangential direction of each position on the circumference of the saw blade body 1 displayed on the radial reference surface is a tangential direction of each position, two side surfaces of the partition wall 1011 form a certain angle with the radial direction and the tangential direction, so that the tool bit 2 also forms a certain angle with the radial direction and the tangential direction, the setting of the angle belongs to the common general knowledge in the art, and detailed description is omitted here.

A raised positioning boss 1012 can be arranged at the tool mounting hole 1014 of the partition wall 1011, and two ends of the screw hole 201 of the tool bit 2 are provided with tapered holes corresponding to the positioning boss 1012.

Preferably, the distribution positions of the partition walls 1011, the thin tips 21 and the thick tips 22 on the adjacent dentations 101 are opposite in sequence, and the distribution positions of the partition walls 1011, the thin tips 21 and the thick tips 22 on the dentations 101 are the same in sequence and are staggered. The cutting edges on the tool bit 2 are symmetrically distributed by taking the screw hole axis of the tool bit as the center. Correspondingly, the arrangement sequence of the tool bit seats with different thicknesses on two sides of the partition wall 1011 on the adjacent dentate projections 101 is also opposite.

The shape of the cutting head 2 may be set to different shapes according to actual working condition requirements, for example, the shape of the side surface of the cutting head 2 may be a regular polygon or a non-regular polygon, for example, when the shape of the side surface of the cutting head 2 is a quadrangle, the shape may be a square or a rectangle, but under both the two conditions, each cutting head includes four cutting edges 202, when the number of the cutting edges 202 of the cutting head 2 exceeds 5, the shape of the side surface of the cutting head 2 is preferably a regular polygon, of course, the shape of the side surface of the cutting head 2 may also be provided with a chip relief groove 203 on the basis of the regular polygon, and as shown in fig. 7. When the structure is used, the cutter head 2 can rotate, so that the cutting edges 202 are respectively positioned at the cutting positions, thus the purpose of multiple utilization of the two cutting edges 202 is realized, and the service life of the cutter head is prolonged. The cutting head 2 can be made of alloy material or ceramic material.

The center of the saw blade body 1 can be provided with a center hole 102, mounting holes 103 are distributed around the center hole 102, and hoisting holes 104 are arranged on the periphery of the mounting holes 103.

The present invention has been described in terms of some embodiments, and is not intended to be limited to the embodiments, but rather, is intended to cover all modifications, improvements, equivalents, and alternatives falling within the spirit and scope of the invention.

Claims

1. A kind of reusable hard alloy circular saw blade, characterized by that: the saw blade comprises a saw blade body and tool bits, wherein tooth-shaped protrusions are uniformly distributed on the outer edge of the saw blade body, two tool bit seats used for placing the tool bits are arranged on two sides of the upper portion of each tooth-shaped protrusion, a partition wall is arranged between the two tool bit seats on each tooth-shaped protrusion, the partition wall and the tool bits on the two sides are fixed together through screws, the two tool bits on each tooth-shaped protrusion are different in thickness, and more than two identical cutting edges are uniformly distributed on the tool bits.

2. The reusable cemented carbide circular saw blade as claimed in claim 1, wherein: each cutting edge is provided with a chip removing groove.

3. The reusable cemented carbide circular saw blade as claimed in claim 1, wherein: the two side surfaces of the partition wall 1011 of the dentate bulge 101 facing the tool bit on the two sides respectively form an included angle of 0.5-2 degrees with the tangential direction in the radial reference plane in opposite inclined directions, and the two side surfaces of the partition wall 1011 of the dentate bulge 101 facing the tool bit 2 on the two sides respectively form an included angle of 0.5-2 degrees with the radial direction in the radial reference plane in opposite inclined directions.

4. The reusable cemented carbide circular saw blade as claimed in claim 1, wherein: the side end wall of the tooth-shaped bulge is provided with a bulge positioning boss at the position of the screw hole facing to one surface of the tool bit, and two ends of the screw hole of the tool bit are provided with taper holes corresponding to the positioning bosses.

5. The reusable cemented carbide circular saw blade as claimed in claim 1, wherein: the distribution positions of the upper partition walls, the thin cutter heads and the thick cutter heads of the adjacent dentate bulges are opposite in sequence, and the distribution positions of the upper partition walls, the thin cutter heads and the thick cutter heads of the dentate bulges are the same in sequence at intervals of teeth and are arranged in a staggered mode.

6. The reusable cemented carbide circular saw blade as claimed in claim 1, wherein: all cutting edges on the tool bit are symmetrically distributed by taking the axis of the screw hole of the tool bit as the center.