CN210817737U

CN210817737U - Quick cutting cold saw bit

Info

Publication number: CN210817737U
Application number: CN201921545408.1U
Authority: CN
Inventors: 宁建峰
Original assignee: Zhejiang Zhiguang Precision Tools Co ltd
Current assignee: Zhejiang Zhiguang Precision Tools Co ltd
Priority date: 2019-09-17
Filing date: 2019-09-17
Publication date: 2020-06-23
Anticipated expiration: 2029-09-17

Abstract

The utility model discloses a cold saw tool bit of fly-cutting, including the tool bit body, the tool bit body includes rake face, back knife face, first face of weld and second face of weld, the rake face is including the chip removal cambered surface that from top to bottom sets up, the chip removal chute of being connected with the chip removal cambered surface, the direction holding surface of being connected with the chip removal chute, a cutting cambered surface is connected between back knife face and chip removal cambered surface. The utility model has the advantages that the arc-shaped cutting arc surface can ensure that the stress distribution is more uniform during cutting, and simultaneously, the chips can be conveniently removed from the rear cutter surface; a chip discharge chute is arranged below the chip discharge cambered surface, so that the chips can be discharged through the chip discharge chute more conveniently; the utility model discloses an adjustment tool bit body structure for the tool bit is compared conventional dysmorphism tool bit and is had stronger chip removal effect, and consequently the heat that the cutting produced is lower, greatly increased the life of tool bit.

Description

Quick cutting cold saw bit

Technical Field

The utility model relates to a cold saw technical field of fly-cutting especially relates to a cold saw tool bit of fly-cutting.

Background

The application of cold saws produced by using special-shaped metal ceramic tool bits in the field of metal cutting is gradually common, but the problems of easy tooth breakage and tooth falling of cutting hard materials are not completely solved.

When the common metal cold saw is used for cutting bearing steel, a hard point is cut to cause a saw blade cutter head to be greatly impacted, a slight person causes tooth deformation to cause tooth falling, a serious person causes broken teeth of a circular saw blade and even continuous broken teeth, and great safety threat is caused to equipment and operating personnel.

The existing cutting tool bit has the defect of unsmooth chip removal, a cutting surface can generate a large amount of cutting heat through friction, if the chip removal is unsmooth, the service life of the tool bit can be greatly shortened, and the processing effect is influenced.

Although the conventional special-shaped cold saw bit is provided with a chip removal groove and a chip removal surface (such as Chinese patent No. CN201420813764.8), the bit still has a certain chip removal problem, and the chip removal angle needs to be further optimized.

SUMMERY OF THE UTILITY MODEL

The present invention aims at solving at least one of the technical problems in the related art to a certain extent. Therefore, an object of the utility model is to provide a cold saw bit head of fly-cutting adopts curved cutting face, intercommunication arc chip removal face for upper and lower chip removal is all comparatively smooth and easy, further sets up chip removal groove face, the convenient great iron fillings discharge of discharging downwards.

The technical scheme of the utility model as follows:

the utility model provides a cold saw tool bit of fly-cutting, includes the tool bit body, the tool bit body includes rake face, back knife face, first face of weld and second face of weld, the rake face is including the chip removal cambered surface that from top to bottom sets up, the chip removal chute of being connected with the chip removal cambered surface, the direction holding surface of being connected with the chip removal chute, be connected a cutting cambered surface between back knife face and chip removal cambered surface. Stress distribution is comparatively even when setting up curved cutting cambered surface and can make the cutting, also conveniently follows the back knife face chip removal simultaneously, sets up a chip removal chute below the chip removal cambered surface, more conveniently passes through the chip removal chute with the piece and discharges.

Furthermore, a chip groove which runs through the rear cutter face and the cutting arc face is formed in one third of the rear cutter face, and the chip grooves in the cutter head body are arranged in a staggered mode relative to the rear cutter face. The chip removal groove is formed in the rear cutter face, so that chips can be removed from the rear cutter face conveniently.

Furthermore, the width of the chip groove is 0.4mm, and the depth of the chip groove is 0.2 mm.

Furthermore, the rear cutter face is connected with the first welding face, and the rear cutter face is arranged in an upward inclined mode. The rear cutter face inclines upwards, so that the cutting cambered surface is convenient to contact with a workpiece for cutting.

Furthermore, the guide supporting surface is connected with the second welding surface and is arranged in parallel with the first welding surface. The direction holding surface sets up with first face of weld parallel, has bigger chip removal angle simultaneously, also can guarantee the intensity of tool bit body.

Further, set up a welding face arc connecting portion between the first welding face of tool bit body and the second welding face, just first welding face and second welding face contained angle are the acute angle. Set up arc connecting portion and be convenient for through first face of weld and second face of weld back atress on the base member more even.

Further, the height of the cutter head body is 4.5mm when the cutter head body is vertically arranged, and the width of the cutter head body is 2.5 mm; an included angle between extension lines of the first welding surface and the second welding surface is 58 degrees, and the radius of the arc-shaped connecting part of the welding surfaces is 0.6 mm; the inclination angle of the rear cutter face is 8 degrees; the radius of the cutting arc surface is 0.15 mm; the radius of the arc surface of the chip removal arc surface 12 is 1mm, the central angle is 142 degrees, the included angle between the chip removal arc surface and the vertical tangent line of the cutting arc surface is 7 degrees, and the cutting distance between the intersection point of the reverse extension lines of the two arc surfaces of the chip removal arc surface and the extension line of the chip removal arc surface 13 vertical to the cutting arc surface is 1.3 mm; the vertical distance between the cutting arc surface and the guide supporting surface is 5 mm; the included angle between the chip removal chute and the reverse extension line of the guide supporting surface is 10-12 degrees, and the vertical distance between the chip removal chute and the reverse extension line of the guide supporting surface is 0.1 mm. The relatively small included angle of the welding surface can enable the whole cutting arc surface 13 to be inclined towards the cutting direction, so that the chip removal is facilitated

The utility model provides a beneficial effect: the arc-shaped cutting arc surface is arranged, so that stress distribution is uniform during cutting, and chips can be conveniently removed from the rear cutter surface; a chip discharge chute is arranged below the chip discharge cambered surface, so that the chips can be discharged through the chip discharge chute more conveniently; the utility model discloses an adjustment tool bit body structure for the tool bit is compared conventional dysmorphism tool bit and is had stronger chip removal effect, and consequently the heat that the cutting produced is lower, greatly increased the life of tool bit.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic structural view of a rapid cutting cold saw bit according to the present invention;

FIG. 2 is a schematic view of adjacent cutting heads of the body of the cutting head of FIG. 1;

FIG. 3 is a front view of the cutting head of FIG. 1;

fig. 4 is a detailed dimensional view of the fig. 1 tool tip.

In the figure: 1-a tool bit body; 11-a flank face; 111-junk slots; 12-chip removal cambered surface; 13-cutting a cambered surface; 14-chip removal chute; 15-guiding the support surface; 16-a first welding face; 17-a second weld face; 18-arc-shaped connecting part of welding surface.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

Example 1

Referring to fig. 1-3, a cold saw tool bit of fly-cutting, including tool bit body 1, tool bit body 1 includes the rake face, back knife face 11, first face of weld 16 and second face of weld 17, and the rake face includes chip removal cambered surface 12 that sets up from top to bottom, chip removal chute 14 be connected with chip removal cambered surface 12, the direction holding surface 15 of being connected with chip removal chute 14, is connected a cutting cambered surface 13 between back knife face 11 and chip removal cambered surface 12, is the cutting part of tool bit body 1. The arc-shaped cutting arc surface 13 can ensure that the stress distribution is uniform during cutting, and simultaneously, the chips can be conveniently removed from the rear cutter surface 11.

In order to facilitate chip removal of the rear cutter face 11, a chip removal groove 111 penetrating through the rear cutter face and the cutting arc face 13 is formed in one third of the rear cutter face 11, the groove width of the chip removal groove is 0.4mm, and the depth of the chip removal groove is 0.2 mm. And the chip grooves 111 on two adjacent cutter head bodies 1 are arranged in a staggered way relative to the rear cutter face 11 (as shown in figure 1).

The flank 11 is connected with the first welding surface 16, and the flank 11 is inclined upwards (away from the center of the base body).

The guide support surface 15 is connected to the second welding surface 17, and the guide support surface 15 is arranged in parallel to the first welding surface 16.

Set up a welding face arc connecting portion 18 between the first face of weld 16 of tool bit body 1 and second face of weld 17, and first face of weld 16 and second face of weld 17 contained angle be the acute angle, set up arc connecting portion 18 and be convenient for through first face of weld 16 and second face of weld 17 welding back atress on the base member more even.

Referring to fig. 4, the cutter head body 1 is vertically arranged, and has a height of 4.5mm and a width of 2.5 mm; the included angle of the extension lines of the first welding surface 16 and the second welding surface 17 is 58 degrees, the radius of the arc-shaped connecting part 18 of the welding surfaces is 0.6mm, and the relatively small included angle can enable the whole cutting arc surface 13 to be inclined towards the cutting direction, so that chip removal is facilitated; the inclination angle of the rear cutter face 11 is 8 degrees; the radius of the cutting arc surface 13 is 0.15 mm; the radius of the arc surface of the chip removal arc surface 12 is 1mm, the central angle is 142 degrees, the vertical tangent included angle between the chip removal arc surface 12 and the cutting arc surface 13 is 7 degrees, and the cutting distance between the intersection point of the reverse extension lines of the two arc surfaces of the chip removal arc surface 13 and the extension line of the chip removal arc surface 13 vertical to the chip removal arc surface 13 is 1.3 mm; the shortest distance (vertical distance) between the cutting arc surface 13 and the guide support surface 15 is 5 mm; the included angle between the chip removal chute 14 and the reverse extension line of the guide supporting surface 15 is 10-12 degrees, and the vertical distance between the chip removal chute 14 and the reverse extension line of the guide supporting surface 15 is 0.1 mm. Of course, the above dimensions are theoretical dimensions and there will be a range of errors.

In the present application, the structures and the connection relations that are not described in detail are all the prior art, and the structures and the principles thereof are known in the prior art and are not described herein again.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. A quick cutting cold saw bit characterized in that: including the tool bit body, the tool bit body includes rake face, back knife face, first face of weld and second face of weld, the rake face is including the chip removal cambered surface that from top to bottom sets up, the chip removal chute of being connected with the chip removal cambered surface, the direction holding surface of being connected with the chip removal chute, be connected a cutting cambered surface between back knife face and chip removal cambered surface.

2. A fly cutting cold saw bit according to claim 1, wherein: and one third of the rear cutter face is provided with a chip removal groove which runs through the rear cutter face and the cutting arc face, and the chip removal grooves on the cutter head bodies are arranged in a staggered manner relative to the rear cutter face.

3. A fly cutting cold saw bit as claimed in claim 2, wherein: the width of the chip groove is 0.4mm, and the depth is 0.2 mm.

4. A fly cutting cold saw bit according to claim 1, wherein: the back knife face is connected with the first welding face, and the back knife face is arranged in an upward inclined mode.

5. A fly cutting cold saw bit according to claim 1, wherein: the guide supporting surface is connected with the second welding surface and is arranged in parallel with the first welding surface.

6. A fly cutting cold saw bit according to claim 1, wherein: set up a welding face arc connecting portion between the first welding face of tool bit body and second welding face, just first welding face and second welding face contained angle are the acute angle.

7. A fly cutting cold saw bit according to claim 6, wherein: the height of the cutter head body is 4.5mm when the cutter head body is vertically arranged, and the width of the cutter head body is 2.5 mm; an included angle between extension lines of the first welding surface and the second welding surface is 58 degrees, and the radius of the arc-shaped connecting part of the welding surfaces is 0.6 mm; the inclination angle of the rear cutter face is 8 degrees; the radius of the cutting arc surface is 0.15 mm; the radius of the arc surface of the chip removal arc surface 12 is 1mm, the central angle is 142 degrees, the included angle between the chip removal arc surface and the vertical tangent line of the cutting arc surface is 7 degrees, and the cutting distance between the intersection point of the reverse extension lines of the two arc surfaces of the chip removal arc surface and the extension line of the chip removal arc surface 13 vertical to the cutting arc surface is 1.3 mm; the vertical distance between the cutting arc surface and the guide supporting surface is 5 mm; the included angle between the chip removal chute and the reverse extension line of the guide supporting surface is 10-12 degrees, and the vertical distance between the chip removal chute and the reverse extension line of the guide supporting surface is 0.1 mm.