CN113319940A

CN113319940A - Precision cutting saw

Info

Publication number: CN113319940A
Application number: CN202110618841.9A
Authority: CN
Inventors: 俞晖; 罗敏; 余林涛; 张周达; 吴功益; 罗辉; 俞云鸽
Original assignee: Hangzhou Wagen Precision Tooling Co ltd
Current assignee: Hangzhou Wagen Precision Tooling Co ltd
Priority date: 2021-06-03
Filing date: 2021-06-03
Publication date: 2021-08-31

Abstract

A precision cutting saw comprises a saw blade matrix with a mounting hole and tungsten steel tool bits, wherein sawteeth are arranged on the periphery of the saw blade matrix in the circumferential direction, tooth bottom chip grooves are formed between adjacent sawteeth, the tungsten steel tool bits are welded on a saw blade matrix tooth seat of the sawteeth facing the cutting direction, the cutting face of each tungsten steel tool bit faces the cutting direction, the cutting edges of the tungsten steel tool bits are in an inclined shape with one high end and one low end, three adjacent tungsten steel tool bits are taken as a group, the interval angles of the two adjacent tungsten steel tool bits in the group in the circumferential direction of the saw blade matrix are alpha and beta sequentially along the clockwise direction, and the interval angles of the two adjacent groups in the circumferential direction of the saw blade matrix are gamma; the saw blade base body is provided with a heat dissipation groove. The invention adopts the saw blade matrix with enough strength and the tungsten steel tool bit with long service life, wherein the tungsten steel tool bit is of an oblique shape to realize the cutting effect; and through setting up the radiating groove, it is easier that the cutting edge dispels the heat, makes the saw bit cutting light and fast. Not only can ensure the precision and the smoothness, but also can prolong the cutting life of the saw blade and improve the production efficiency.

Description

Precision cutting saw

Technical Field

The invention relates to a precision cutting saw.

Background

In the field of wood processing, users have higher and higher requirements on the size precision and the smoothness of a cutting surface, and the conventional cutting saw blade is originally adopted, so that the size precision is not high, and the processing service life is short.

Disclosure of Invention

In order to overcome the problems, the invention provides the precision cutting saw which can ensure the precision, prolong the cutting service life of the saw blade and improve the production efficiency.

The technical scheme adopted by the invention is as follows: a precision cutting saw comprises a saw blade matrix with a mounting hole and tungsten steel tool bits, wherein sawteeth are arranged on the periphery of the saw blade matrix in the circumferential direction, tooth bottom chip grooves are formed between adjacent sawteeth, the tungsten steel tool bits are welded on a saw blade matrix tooth seat of the sawteeth facing the cutting direction, the cutting face of each tungsten steel tool bit faces the cutting direction, the cutting edges of the tungsten steel tool bits are in an inclined shape with one high end and one low end, three adjacent tungsten steel tool bits are taken as a group, the interval angles of the two adjacent tungsten steel tool bits in the group in the circumferential direction of the saw blade matrix are alpha and beta sequentially along the clockwise direction, and the interval angles of the two adjacent groups in the circumferential direction of the saw blade matrix are gamma;

the saw blade base body is provided with heat dissipation grooves, the heat dissipation grooves comprise a first heat dissipation groove and a second heat dissipation groove, the first heat dissipation groove is uniformly distributed on the outer circumference of the saw blade base body in the circumferential direction, the contour line of the first heat dissipation groove is formed by smoothly connecting continuous small circular arc sections, large circular arc sections and linear sections, and the linear section of the first heat dissipation groove is connected with the bottom of the tooth bottom chip pocket; the second radiating groove is arranged on the saw blade base body and located between the tungsten steel tool bit and the mounting hole, the plurality of second radiating grooves are arranged at intervals along the circumferential direction, the second radiating groove comprises a snakelike slit and two round holes, and the two round holes are arranged at two ends of the slit.

Further, the spacing angle α is smaller than the spacing angle β, which is smaller than the spacing angle γ.

Further, the number of the first heat dissipation grooves and the number of the second heat dissipation grooves are both larger than 4.

Furthermore, the HRC hardness of the saw blade matrix is 42-46.

The invention has the beneficial effects that: the tungsten steel tool bit with enough strength and long service life is ground and processed into an oblique shape by a high-precision machine containing an oblique processing program, so that the cutting effect can be realized; and through setting up the radiating groove, it is easier that the cutting edge dispels the heat, makes the saw bit cutting light and fast. Not only can ensure the precision and the smoothness, but also can prolong the cutting life of the saw blade and improve the production efficiency.

Drawings

Fig. 1 is a schematic structural view of the present invention.

Fig. 2 is a front view of the saw blade body.

FIG. 3 is a left side view of a tungsten steel tip.

FIG. 4 is a partial schematic view of the present invention

Description of reference numerals: 1. the saw blade comprises a saw blade base body, 2 saw teeth, 3 heat dissipation grooves, 21 saw blade base body tooth seats, 22 tooth bottom chip grooves, 4 tungsten steel tool bits, 5 mounting holes.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are only some embodiments, but not all embodiments, of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the orientations or positional relationships indicated as the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., appear based on the orientations or positional relationships shown in the drawings only for the convenience of describing the present invention and simplifying the description, but not for indicating or implying that the referred devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" as appearing herein are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" should be interpreted broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to the attached drawings, the precision cutting saw comprises a saw blade base body 1 with a mounting hole 5 and a tungsten steel tool bit 4, wherein saw teeth 2 are arranged on the outer edge of the saw blade base body 1 in the circumferential direction, tooth bottom chip grooves 22 are formed between adjacent saw teeth 2, the tungsten steel tool bit 4 is welded on a saw blade base body tooth seat 21, facing the cutting direction, of each saw tooth 2, the cutting surface of each tungsten steel tool bit 4 faces the cutting direction, the cutting edge of each tungsten steel tool bit 4 is in an inclined shape with one high end and one low end, and the cutting edge is machined to a required angle through a high-precision machine containing an inclined machining program. Three adjacent tungsten steel tool bits 4 are taken as a group, the interval angles of two adjacent tungsten steel tool bits 4 in the group in the circumferential direction of the saw blade matrix 1 are alpha and beta in turn along the clockwise direction, and the interval angles of two adjacent groups in the circumferential direction of the saw blade matrix 1 are gamma; the spacing angle α is less than the spacing angle β, which is less than the spacing angle γ. The saw blade matrix 1 is arranged on a machine through the mounting hole 5, and meanwhile, the heat treatment process is adopted, so that the HRC hardness of the saw blade matrix 1 is ensured to be 42-46.

The saw blade base body 1 is provided with heat dissipation grooves 3, the heat dissipation grooves 3 comprise first heat dissipation grooves and second heat dissipation grooves, the first heat dissipation grooves are uniformly distributed on the outer circumference of the saw blade base body 1 in the circumferential direction, the contour lines of the first heat dissipation grooves are formed by smoothly connecting continuous small circular arc sections, large circular arc sections and straight line sections, and the straight line sections of the first heat dissipation grooves are connected with the bottoms of the tooth bottom chip grooves 22; the second radiating groove is arranged on the saw blade base body 1 and located between the tungsten steel tool bit 4 and the mounting hole 5, the plurality of second radiating grooves are arranged at intervals along the circumferential direction, the second radiating groove comprises a snakelike slit and two round holes, and the two round holes are arranged at two ends of the slit. The number of the first radiating grooves and the number of the second radiating grooves are both larger than 4.

The embodiments described in this specification are merely illustrative of implementations of the inventive concept and the scope of the present invention should not be considered limited to the specific forms set forth in the embodiments but rather by the equivalents thereof as may occur to those skilled in the art upon consideration of the present inventive concept.

Claims

1. The utility model provides a precision slitting saw, including saw bit base member (1) and the wolfram steel tool bit (4) that have mounting hole (5), the outer fringe circumference of saw bit base member (1) is equipped with sawtooth (2), be equipped with tooth bottom chip groove (22) between adjacent sawtooth (2), the welding has wolfram steel tool bit (4) on saw bit base member toothholder (21) of the orientation of cut of the meeting of sawtooth (2), the cutting face of wolfram steel tool bit (4) is to the orientation of cut, the blade of wolfram steel tool bit (4) is the oblique type that one end height one end is low, its characterized in that: three adjacent tungsten steel tool bits (4) are taken as a group, the interval angles of two adjacent tungsten steel tool bits (4) in the group in the circumferential direction of the saw blade matrix (1) are alpha and beta in sequence along the clockwise direction, and the interval angles of two adjacent groups in the circumferential direction of the saw blade matrix (1) are gamma;

the saw blade base body (1) is provided with heat dissipation grooves (3), the heat dissipation grooves (3) comprise first heat dissipation grooves and second heat dissipation grooves, the first heat dissipation grooves are uniformly distributed on the outer circumference of the saw blade base body (1) in the circumferential direction, the contour lines of the first heat dissipation grooves are formed by smoothly connecting continuous small arc sections, large arc sections and straight line sections, and the straight line sections of the first heat dissipation grooves are connected with the bottoms of tooth bottom chip grooves (22); the second radiating grooves are formed in the saw blade base body (1) and located between the tungsten steel tool bit (4) and the mounting hole (5), the plurality of second radiating grooves are arranged at intervals along the circumferential direction, each second radiating groove comprises a snakelike slit and two round holes, and the two round holes are formed in two ends of the slit.

2. A precision cutting saw as claimed in claim 1, wherein: the spacing angle alpha is smaller than the spacing angle beta, and the spacing angle beta is smaller than the spacing angle gamma.

3. A precision cutting saw as claimed in claim 1, wherein: the number of the first heat dissipation grooves and the number of the second heat dissipation grooves are both larger than 4.

4. A precision cutting saw as claimed in claim 1, wherein: the HRC hardness of the saw blade matrix (1) is 42-46.