CN201483586U

CN201483586U - Saw chain

Info

Publication number: CN201483586U
Application number: CN2009201485413U
Authority: CN
Inventors: 郑元聪
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-04-03
Filing date: 2009-04-03
Publication date: 2010-05-26
Anticipated expiration: 2019-04-03

Abstract

A saw chain comprises an incisive tooth piece, a connecting piece and a drive chain piece which are riveted through a rivet, wherein the incisive tooth piece comprises a cutting toothy, a metering tooth arranged on the front end of the cutting tooth, and a connecting board for connecting the cutting tooth and the metering tooth, wherein the cutting tooth, the metering tooth and the connecting board are integrally shaped, a hard alloy cutting blade is welded on the front end of the cutting tooth, the abrasion resistance of the hard alloy is obviously stronger than T8, and the intensity and the hardness can be guaranteed, therefore, the cutting tooth can not be abraded and be blunt after long-term high intensity work, thereby prolonging the service span of the saw chain, in addition, a round corner radius on the had alloy cutting blade is controlled between 0.01 mm-0.1 mm after being sharpened, the tartness of a cutting edge is effectively improved, thereby improving the cutting efficiency.

Description

A kind of saw chain

Technical field:

The saw chain that uses on the chain saw that the utility model relates to and a kind ofly is used to lumber, timber cuts off.

Background technology:

In the prior art, as Chinese patent 90215427.3 disclosed a kind of saw chains, comprise brace, drive link, cutting sheet and rivet composition, it is characterized in that saw chain is done further to improve, improvement comprises does the strict conformance screening to reduce amount of deflection to the saw chain part on thickness, change the cutting plate shape as increasing the cutting angle, increasing depth gauge, make limit material addendum angle become little fillet by right angle or big fillet, drive link adopts 60Si ₂Mn, tool steel T is adopted in section ₈Material, through after the above-mentioned improvement, the wearability of this saw chain and sharpness have had certain improvement, still, because its section is still by T ₈Steel is made, and T ₈The intensity of steel, hardness and wearability are still not high comparatively speaking, and the section of saw chain is easy to the rust that will be worn after long-time high strength operation, and then has directly shortened the service life of saw chain;

In addition, the cutting sheet of tradition on the saw chain by the instrument steel disc through the punching press one-shot forming, cutting teeth is formed by connecting by last section and bending sheet on the cutting sheet, because the restriction of Sheet Metal Forming Technology, the outside, junction at last section and bending sheet must form the bull nose of a radius greater than 0.2mm, last section, bull nose and bending sheet cut workpiece as cutting edge behind sharpening, during cutting, by bull nose place cutting edge as main cutting edge, because round radius is greater than 0.2mm, serious reduction the sharpness of cutting edge, it is more high-power to make that saw chain the time need expend in cutting, has reduced cutting speed.

The utility model content:

The purpose of this utility model is to overcome above-mentioned the deficiencies in the prior art, and the saw chain that a kind of anti-wear performance is good, cutting speed is fast is provided.

A kind of saw chain that provides according to the utility model, comprise cutting sheet, brace and drive link by rivet, described cutting sheet comprises cutting teeth, be located at the cutting teeth front end limit the quantity of tooth be connected cutting teeth and the connecting plate of the tooth of limiting the quantity of, cutting teeth, limit the quantity of tooth and connecting plate are one-body molded, and described cutting teeth front end is welded with a carbide chip.

The utility model also has following attached technical characterictic:

Described cutting teeth comprises the section and the first bending sheet on first, described first bending sheet upper end is connected with section one side on described first, the lower end is connected with described connecting plate upper end, described carbide chip comprises the section and the second bending sheet on second, wherein, section one side is connected on the second bending sheet upper end and second, cuts into slices on described second and being welded on first of the second bending sheet correspondence cut into slices and the first bending sheet front end.

It is one-body molded to cut into slices on the second bending sheet and second on the described carbide chip, and its junction forms a fillet, and behind the sharpening, this radius of corner is 0.01mm-0.1mm.

Described cutting teeth is a thin plate, and its front end has an opening, and described carbide chip is welded in this opening, and the width of carbide chip is greater than the width of cutting teeth.

Main cutting edge and front cutting edge joint form fillet on the described carbide chip, and behind the sharpening, this radius of corner is 0.01mm-0.1mm.The level height of described carbide chip upper surface cutting edge is greater than the level height of cutting teeth upper surface.

A kind of saw chain that provides according to the utility model with respect to the advantage of prior art is:

The first, in the utility model, be welded with the carbide chip that a main component is tungsten carbide and cobalt, and workpiece cut by this carbide chip at the cutting teeth front end since the carbide alloy mechanical property in particularly wearability obviously than T ₈Steel is good, and simultaneously, there is rich cobalt phenomenon on the blade top layer during cutting, so the coefficient of friction between smear metal, workpiece and cutter can be reduced, thereby cutting force can be reduced, thereby, the rust even this cutting teeth can not be worn after long-time high strength operation has yet prolonged service life of saw chain;

The second, in the utility model, radius of corner is being controlled in behind the sharpening between the 0.02mm-0.2mm on the carbide chip, has effectively promoted the sharpness of cutting edge, and then has improved cutting speed.

Description of drawings:

Introduce the utility model in detail below in conjunction with the drawings and specific embodiments.

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the structural representation of the main apparent direction of cutting sheet among the utility model embodiment one;

Fig. 3 is the structural representation of overlooking direction of cutting sheet among the utility model embodiment one;

Fig. 4 is the structural representation of the main apparent direction of cutting sheet among the utility model embodiment two;

Fig. 5 is the structural representation of the right apparent direction of cutting sheet among the utility model embodiment two.

The specific embodiment:

With reference to Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, a kind of saw chain that provides according to the utility model, comprise cutting sheet 2, brace 3 and drive link 4 by rivet 1 riveted joint, cutting sheet 2 comprises cutting teeth 21, be located at cutting teeth 21 front ends limit the quantity of tooth 22 be connected cutting teeth 21 and the connecting plate 23 of the tooth 22 of limiting the quantity of, cutting teeth 21, limit the quantity of tooth 22 and connecting plate 23 are one-body molded, cutting teeth 21 front ends are welded with a carbide chip 5, this carbide chip 5 is behind the special-purpose machinery sharpening, can carry out cutwork, because the wearability of carbide alloy is obviously than T ₈Steel is strong, and simultaneously, there is rich cobalt phenomenon on the blade top layer during cutting, so the coefficient of friction between smear metal, workpiece and cutter can be reduced, thereby cutting force can be reduced, thereby, the rust even this cutting teeth can not be worn after long-time high strength operation yet can prolong service life of saw chain.

In sum, according to the difference of cutting teeth 21 structures, we have provided two kinds of specific embodiments:

Embodiment one: cutting teeth 21 comprises the section 211 and first bending sheet 212 on first, section 211 1 sides are connected on the first bending sheet, 212 upper ends and first, the lower end is connected with connecting plate 23 upper ends, carbide chip 5 comprises the section 51 and second bending sheet 52 on second, section 51 is one-body molded on this second bending sheet 52 and second, wherein, section 51 1 sides are connected on the second bending sheet, 52 upper ends and second, its junction forms a fillet 9, behind the sharpening, these fillet 9 radiuses are 0.02mm-0.2mm, the section 51 and second bending sheet 52 correspondences is welded on the section 211 and first bending sheet 212 front ends on first on second, carbide chip 5 is formed in one to cast and forms, its fillet 9 radiuses are being controlled in behind the sharpening between the 0.01mm-0.1mm, have effectively promoted the sharpness of cutting edge, and then have improved cutting speed;

Embodiment two: cutting teeth 21 is a thin plate, its front end has an opening 218, carbide chip 5 is welded in this opening 218, the width of carbide chip 5 is greater than the width of cutting teeth 21, the level height of main cutting edge 58 is greater than the level height of cutting teeth 21 upper surfaces on the carbide chip 5, this kind structural entity is fairly simple, main cutting edge 58 forms fillet 9 with front cutting edge 59 joints on the carbide chip 5, this fillet 9 is controlled between the 0.01mm-0.1mm at its radius behind the sharpening, can effectively promote the sharpness of cutting edge, and then improve cutting speed.

Carbide chip 5 is a tungsten-cobalt alloy, and its tungsten carbide content is that 88%-97%, cobalt content are 2%-12%, is added with the elements such as nickel, titanium of trace simultaneously, can increase the mechanical properties such as intensity, hardness, abrasion resistance of carbide chip 5.

Claims

1. saw chain, comprise cutting sheet (2), brace (3) and drive link (4) by rivet (1) riveted joint, described cutting sheet (2) comprises cutting teeth (21), is located at the tooth of limiting the quantity of (22) and the connecting plate (23) that is connected cutting teeth (21) and the tooth of limiting the quantity of (22) of cutting teeth (21) front end, cutting teeth (21), the tooth of limiting the quantity of (22) and connecting plate (23) are one-body molded, it is characterized in that: described cutting teeth (21) front end is welded with a carbide chip (5).

2. a kind of saw chain as claimed in claim 1, it is characterized in that: described cutting teeth (21) comprises section (211) and the first bending sheet (212) on first, the described first bending sheet (212) upper end is connected with section (211) one sides on described first, the lower end is connected with described connecting plate (23) upper end, described carbide chip (5) comprises section (51) and the second bending sheet (52) on second, wherein, section (51) one sides are connected on the second bending sheet (52) upper end and second, and section (51) and the second bending sheet (52) correspondence is welded on cut into slices on first (211) and first bending sheet (212) front end on described second.

3. a kind of saw chain as claimed in claim 2, it is characterized in that: section (51) is one-body molded on the last second bending sheet (52) of described carbide chip (5) and second, its junction forms a fillet (9), and behind the sharpening, this fillet (9) radius is 0.01mm-0.1mm.

4. a kind of saw chain as claimed in claim 1, it is characterized in that: described cutting teeth (21) is a thin plate, its front end has an opening (218), and described carbide chip (5) is welded in this opening (218), and the width of carbide chip (5) is greater than the width of cutting teeth (21).

5. a kind of saw chain as claimed in claim 4 is characterized in that: described carbide chip (5) is gone up main cutting edge (58) and is formed fillet (9) with front cutting edge (59) joint, and behind the sharpening, this fillet (9) radius is 0.01mm-0.1mm.

6. a kind of saw chain as claimed in claim 5 is characterized in that: described carbide chip (5) is gone up the level height of the level height of main cutting edge (58) greater than cutting teeth (21) upper surface.