CN105500465A - Novel saw blade - Google Patents

Abstract

The invention relates to a novel saw blade, comprising a circular saw blade; two sides of the circular saw blade are provided with reinforcing gaskets, respectively; the center of circle of the circular saw blade is provided with a spindle receiving port which is provided with positioning grooves; the outer periphery of the circular saw blade is provided with saw teeth; the tops of the saw teeth are fixedly connected with alloy tips through support pads; silencing grooves are arranged among the saw teeth and are communicated with silencing holes I arranged in the circular saw blade; each positioning groove is provided with a silencing hole II. The reinforcing gaskets help greatly improve support strength for the circular saw blade; the silencing holes in the positioning grooves help reduce transmission noise, and the silencing holes and the silencing grooves among the saw teeth help jointly minimize noise produced during cutting; the tops of the saw teeth are connected with the alloy tips through the support pads, giving a significant improvement in cutting stability and a significant improvement in precision; the alloy tips are high in strength, end surfaces of wood cut with the alloy tips are free of burrs, cuts are smooth and flat, and the blade is long in service life.

Description

A kind of Novel saw blade

technical fieldthe invention belongs to cutting tool technical field, be specifically related to a kind of Novel saw blade.

background technologyin prior art, cutting timber often can use saw blade, and saw blade is High Rotation Speed under the drive of motor, thus cuts timber, and the hardness due to timber will be significantly smaller than the hardness of metal saw blade, and therefore, the cutting process of timber is very easy; But the end face after timber cutting can be subject to directly affecting of saw blade, namely whether timber cutting end face is neat, whether occurs that the accuracy of burr and cutting all can produce obvious change by the quality of saw blade; The precision that traditional saw blade not only cuts is low, and cutting end face there will be burr, causes the phenomenon of cutting effect difference; Further, the noise produced in cutting process is large, and large to the noise pollution of working environment, long-time cutting operation also can cause reduce the service life of saw blade, and these drawbacks all obviously govern operating efficiency.

summary of the inventionthe object of the invention is to solve prior art and there is cutting effect difference, life-span short and ineffective technical problem, provide a kind of Novel saw blade, to overcome the deficiencies in the prior art.

To achieve these goals, the present invention is achieved through the following technical solutions:

A kind of Novel saw blade, it comprises circular saw bit; It is the reinforcing washer in the same center of circle that the both sides of described circular saw bit are fixed with respectively with it; The circle centre position of described circular saw bit is provided with rotating shaft socket, and rotating shaft socket is provided with mutually corresponding detent; The excircle of described circular saw bit is provided with sawtooth; The top of described sawtooth is mutually permanently connected by lip block and alloy cutter head; Be provided with silencing groove between described sawtooth, and the bloop I that silencing groove and circular saw bit are provided with is interconnected; Described detent is provided with bloop II.

The thickness of described circular saw bit is 1.8mm-2.2mm.

The thickness of described reinforcing washer is 2.98mm-3mm.

The thickness of described alloy cutter head is 1.18mm-1.25mm.

Described alloy cutter head is prepared as follows and obtains:

1) take off according to mass percent and state each raw material for standby: tungsten carbide 68 ~ 71%, ramet 0.46 ~ 0.49%, titanium carbide 1.4 ~ 1.6%, rhenium 0.03 ~ 0.05%, boron carbide 1.2 ~ 1.4%, silicon nitride 1.8 ~ 2.2%, molybdenum 3.24 ~ 3.35%, chromium 6.6 ~ 6.9%, iron 10 ~ 12%, nickel 2.35 ~ 2.46%, manganese 2.1 ~ 2.5%, cerium 0.3 ~ 0.5%, and other inevitable impurity, and the content of impurity in whole alloy must not higher than 0.3%; Wherein, the particle diameter of silicon nitride is 100 orders;

2) first tungsten carbide, ramet, titanium carbide, rhenium are put into reactor and be heated to 3800-4000 DEG C, insulation 3-4h, and stir with the speed of 120-150r/min, mixing time is 1-1.5h, in heating whipping process, pass into nitrogen as protective gas in reactor;

3) cooling is stopped when the temperature in reactor being cooled to 2400-2500 DEG C, boron carbide, silicon nitride, molybdenum stirring with the speed of 220-250r/min is added successively in reactor, mixing time is 1-2h, passes into nitrogen as protective gas in whipping process in reactor;

4) 1-2h is incubated after then reactor temperature being down to 1900-2200 DEG C, and add chromium, iron, nickel, manganese, cerium successively, stir with the speed of 350-420r/min, mixing time is 0.5-1h, in insulated and stirred process, pass into nitrogen as protective gas in reactor;

5) temperature in reactor is down to 1300-1400 DEG C, insulation 1.5-2h, flows into die cast in alloy cutter head mould by the liquid in reactor;

6) adopt water-cooled, with the cooling velocity of 8-10 DEG C/s, alloy cutter head is cooled to 500-550 DEG C, insulation 25-35min, adopt oil cooling again, with the cooling velocity of 5-7 DEG C/s, alloy cutter head is cooled to 280-300 DEG C of insulation 1-1.5h, finally naturally cools to room temperature, to obtain final product.

In the present invention, the both sides of circular saw bit are provided with reinforcing washer, greatly can improve the support strength of circular saw bit; The bloop that detent is provided with reduces drive noise under or else affecting the prerequisite of transmission effect, and and silencing groove between sawtooth jointly the noise produced when cutting is down to minimum; The top of sawtooth is connected with alloy cutter head by lip block, and can significantly improve stability during cutting, precision significantly improves; The intensity of alloy cutter head is high, the end face impulse-free robustness of timber after cutting, smooth and long service life after cutting.

accompanying drawing explanationfig. 1 is structural representation front view of the present invention;

Fig. 2 be in Fig. 1 A-A to structural representation.

In figure 1, reinforcing washer 2, circular saw bit 3, silencing groove 4, bloop I 5, alloy cutter head 6, lip block 7, sawtooth 8, detent 9, rotating shaft socket 10, bloop II

Detailed description of the invention

Below employing specific embodiment is made further explanation to the present invention, but it is not as the restriction to the invention spirit.

Embodiment 1

See figures.1.and.2, the present invention it comprise circular saw bit 2; It is the reinforcing washer 1 in the same center of circle that the both sides of described circular saw bit 2 are fixed with respectively with it; The circle centre position of described circular saw bit 2 is provided with rotating shaft socket 9, and rotating shaft socket 9 is provided with mutually corresponding detent 8; The excircle of described circular saw bit 2 is provided with sawtooth 7; The top of described sawtooth 7 is mutually permanently connected by lip block 6 and alloy cutter head 5; Be provided with silencing groove 3 between described sawtooth 7, and the bloop I 4 that silencing groove 3 and circular saw bit 2 are provided with is interconnected; Described detent 8 is provided with bloop II 10; The thickness of described circular saw bit 2 is 1.8mm-2.2mm; The thickness of described reinforcing washer 1 is 2.98mm-3mm; The thickness of described alloy cutter head 5 is 1.18mm-1.25mm.

Described alloy cutter head is prepared as follows and obtains:

1) take off according to mass percent and state each raw material for standby: tungsten carbide 69%, ramet 0.47%, titanium carbide 1.4%, rhenium 0.03%, boron carbide 1.2%, silicon nitride 2%, molybdenum 3.3%, chromium 6.7%, iron 11%, nickel 2.4%, manganese 2.1%, cerium 0.3%, and other inevitable impurity, and the content of impurity in whole alloy must not higher than 0.3%; Wherein, the particle diameter of silicon nitride is 100 orders;

2) first tungsten carbide, ramet, titanium carbide, rhenium are put into reactor and be heated to 3900 DEG C, insulation 3.5h, and stir with the speed of 135r/min, mixing time is 1h, in heating whipping process, pass into nitrogen as protective gas in reactor;

3) cooling is stopped when the temperature in reactor being cooled to 2500 DEG C, boron carbide, silicon nitride, molybdenum stirring with the speed of 240r/min is added successively in reactor, mixing time is 1.5h, passes into nitrogen as protective gas in whipping process in reactor;

4) be incubated 2h after then reactor temperature being down to 2000 DEG C, and add chromium, iron, nickel, manganese, cerium successively, stir with the speed of 400r/min, mixing time is 1h, in insulated and stirred process, pass into nitrogen as protective gas in reactor;

5) temperature in reactor is down to 1400 DEG C, insulation 2h, flows into die cast in alloy cutter head mould by the liquid in reactor;

6) adopt water-cooled, with the cooling velocity of 10 DEG C/s, alloy cutter head is cooled to 550 DEG C, insulation 35min, then adopt oil cooling, with the cooling velocity of 6 DEG C/s, alloy cutter head is cooled to 290 DEG C of insulation 1.5h, finally naturally cools to room temperature, to obtain final product.

Embodiment 2

The embodiment of the present invention 1 is to produce carpenter by YT(tungsten titanium class) hard alloy saw blade is of a size of external diameter 300mm × facewidth 3.2mm × thickness 2.2mm × internal diameter 30mm × number of teeth 96, and it is experimental group that alloy cutter head is of a size of 2.0mm × 1.2mm × 1.0mm; Taking application number as the YG(W-Co kind of CN2005100341971) hard alloy saw blade is of a size of external diameter 300mm × facewidth 3.2mm × thickness 2.2mm × internal diameter 30mm × number of teeth 96, and it is control group that alloy cutter head is of a size of 2.0mm × 1.2mm × 1.0mm;

Measured by the hardness of Vickers hardness method of testing (ISO6507-1:1998) to experimental group and control group alloy cutter head, result is as follows:

Experimental group alloy cutter head hardness (Hv) 3520

Control group alloy cutter head hardness (Hv) 2990

Measured by the length of cutting each sharpening of sawing particieboard, result is as follows:

The each sharpening of experimental group cuts length (m) 21.5

The each sharpening of control group cuts length (m) 16

The noise produced during by sawing the speed sawing particieboard respectively with 3500r/min to experimental group and control group is tested, and structure is as follows:

The noise (dB) 82 of experimental group

The noise (dB) 116 of control group

By testing the flatness of particieboard sawing end face, result is as follows:

Experimental group, without obvious out-of-flatness place, has no burr

Control group has obvious burr, and end face has obvious out-of-flatness place

The invention has the beneficial effects as follows: reinforcing washer 1 can improve the support strength of circular saw bit 2 greatly, extends service life; Sawtooth 7 top is connected with alloy cutter head 5 by lip block 6, the timber end face impulse-free robustness after cutting, smooth after cutting; Silencing groove 3 on circular saw bit 2 and bloop I 4 can be split the area of circular saw bit 2, decrease the area of resonance, and the noise produced when effectively can reduce cutting, also effectively can dispel the heat simultaneously, reduce distortion to the full extent; Detent 8 is provided with the effect that bloop II 10 also can play noise reduction in transmission process; Detent 8 clamps spacing when playing installation rotating shaft, prevent from loosening.

Although be described in detail the specific embodiment of the present invention above and illustrate, but what should indicate is, we can make various changes and modifications above-mentioned embodiment, but these do not depart from spirit of the present invention and the scope described in appended claim.

Claims (5)

1. a Novel saw blade, it comprises circular saw bit (2); It is characterized in that the both sides of described circular saw bit (2) are fixed with respectively with it is the reinforcing washer (1) in the same center of circle; The circle centre position of described circular saw bit (2) is provided with rotating shaft socket (9), and rotating shaft socket (9) is provided with mutually corresponding detent (8); The excircle of described circular saw bit (2) is provided with sawtooth (7); The top of described sawtooth (7) is mutually permanently connected by lip block (6) and alloy cutter head (5); Be provided with silencing groove (3) between described sawtooth (7), and the bloop I (4) that silencing groove (3) and circular saw bit (2) are provided with is interconnected; Described detent (8) is provided with bloop II (10).

2. a kind of Novel saw blade according to claim 1, is characterized in that the thickness of described circular saw bit (2) is 1.8mm-2.2mm.

3. a kind of Novel saw blade according to claim 1, is characterized in that the thickness of described reinforcing washer (1) is 2.98mm-3mm.

4. a kind of Novel saw blade according to claim 1, is characterized in that the thickness of described alloy cutter head (5) is 1.18mm-1.25mm.

5. a kind of Novel saw blade according to claim 1, is characterized in that described alloy cutter head is prepared as follows and obtains:

1) take off according to mass percent and state each raw material for standby: tungsten carbide 68 ~ 71%, ramet 0.46 ~ 0.49%, titanium carbide 1.4 ~ 1.6%, rhenium 0.03 ~ 0.05%, boron carbide 1.2 ~ 1.4%, silicon nitride 1.8 ~ 2.2%, molybdenum 3.24 ~ 3.35%, chromium 6.6 ~ 6.9%, iron 10 ~ 12%, nickel 2.35 ~ 2.46%, manganese 2.1 ~ 2.5%, cerium 0.3 ~ 0.5%, and other inevitable impurity, and the content of impurity in whole alloy must not higher than 0.3%; Wherein, the particle diameter of silicon nitride is 100 orders;

2) first tungsten carbide, ramet, titanium carbide, rhenium are put into reactor and be heated to 3800-4000 DEG C, insulation 3-4h, and stir with the speed of 120-150r/min, mixing time is 1-1.5h, in heating whipping process, pass into nitrogen as protective gas in reactor;

3) cooling is stopped when the temperature in reactor being cooled to 2400-2500 DEG C, boron carbide, silicon nitride, molybdenum stirring with the speed of 220-250r/min is added successively in reactor, mixing time is 1-2h, passes into nitrogen as protective gas in whipping process in reactor;

4) 1-2h is incubated after then reactor temperature being down to 1900-2200 DEG C, and add chromium, iron, nickel, manganese, cerium successively, stir with the speed of 350-420r/min, mixing time is 0.5-1h, in insulated and stirred process, pass into nitrogen as protective gas in reactor;

5) temperature in reactor is down to 1300-1400 DEG C, insulation 1.5-2h, flows into die cast in alloy cutter head mould by the liquid in reactor;

6) adopt water-cooled, with the cooling velocity of 8-10 DEG C/s, alloy cutter head is cooled to 500-550 DEG C, insulation 25-35min, adopt oil cooling again, with the cooling velocity of 5-7 DEG C/s, alloy cutter head is cooled to 280-300 DEG C of insulation 1-1.5h, finally naturally cools to room temperature, to obtain final product.