JPH10202405A - Cutting tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To use a tip until it becomes the minimum shape without largely flawing a shank part or grinding the tip for use by putting a tip part forward by molding a shank head end nearly in an L shape and brazing and fastening a tip rear part so as to position it roughly on a line in the width of the shank. SOLUTION: A nose part A is mold so as to make a head end of a shank 1 nearly in an L shape, a seat of this nose part A is machined in a shape of a tip 2 so that a rear end of the top 2 becomes nearly a line in width of the shank 1, and a grinding tool brazing cutting tool is made by brazing and fastening the tip 2 on this seat. Consequently, it is possible to use the tip 2 until it becomes the minimum shape without largely grinding the shank 1 itself and reducing strength of the shank 1 against grinding setback of a cutting edge through cutting use.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cutting tool for cutting a lathe, a milling machine or the like, which is effective for maximizing the use of a tip portion of a brazing tool.

[0002]

2. Description of the Related Art In recent years, cutting tools such as lathes and milling machines, and cutting tools using throw-away type chips have become mainstream due to the development of fully automatic lathes, fully automatic milling machines, etc. and mass-production machines. In general, the usage rate of the throw-away type chip, such as various small-lot processing and single-piece processing, is around 25%,
It is a brazing type byte.

[0003] Most of these cutting tools, which are brazing tools, are manufactured and used in small quantities as needed at each factory. However, the cost increases, and in addition, techniques such as fire shank and brazing work are required. In recent years, a JIS type standard bit has been generally marketed as a brazing bit, and the cutting edge has been ground and shaped. In particular, while the usage rate of JIS standard byte is high, JIS standard byte 31 type,
It is 32 type and the same standard tool 33 type and 34 type, but the cutting part of the tip is 4m due to the shank width.
The actual condition is that the tip width is about 1/5 to 1/3 from m to 6mm, and the cutting blade is manufactured with an inclination angle of 6 degrees upward. In the case of damage to the cutting edge, etc., grinding is used.However, chipping, breakage, breakage, etc. will be sharply ground, so the shank part will also be sharply sharpened at one place, thereby reducing the strength of the shank. In addition, the vibration of the shank 1 also lowers the strength of the chip. Also, grinding the shank large will cause the grindstone to be clogged and blinded, which will cause chipping of the cutting edge and cause partial cracking of the cutting edge due to partial heating, which will increase the grinding time. It is uneconomical in that only one-third to at most one-half of the expensive tool bit can be used. In addition, it is completely uneconomical for chip breaker processing and negative brake processing. Was.

[0004]

Therefore, the tip portion of an expensive bite is used until it becomes the minimum shape, and machining of the chip breaker portion which greatly affects cutting can be performed safely and promptly, and the strength of the bite is reduced. A technical problem is a brazing tool that can withstand heavy cutting without causing the cutting.

[0005]

In order to solve the problems of the present invention, the present cutting tool brazing tool has a shank tip having an approximately L-shaped nose portion, and a rear portion opposite to the tip cutting edge has a width outside the shank width. Process the seat with the tip mounting shape so that it is on the line, and the cutting edge inclination angle as appropriate, braze and fix the tip, put out the blade part, that is, the tip part, do not greatly damage the shank part for grinding use Can be used until the chip has the minimum shape.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The contents of the present invention will be described below based on an embodiment shown in the drawings. The brazing tool of the cutting tool according to the present invention is configured such that the tip of the shank 1 having a size is approximately 90 degrees L.
A nose portion A is formed into a mold, and the nose portion A is inserted into the tip 2 so that the rear end of the tip 2 becomes substantially the width line of the shank 1.
This is a cutting tool brazing tool for performing a seating process of the shape shown in FIG. Accordingly, the tip 2 can be used to the minimum shape without grinding the shank 1 itself and reducing the strength of the shank 1 against the retreat of the cutting edge by grinding.

In this cutting tool, the tip 2 of the tip 2 retreats due to damage when the tip is inclined at an angle α of about 0 ° to 10 ° in the downward direction and the chip is subjected to chip breaker processing. When the same shape chip breaker processing is performed than when the inclination of the cutting blade is set upward, the remaining chips are thick, and the strength of the chips is not easily reduced. Also, by lowering the inclination angle α of the cutting blade, the cutting blade relating to the cutting tool itself is added so as to compress backward and downward, and the cutting blade when the inclination β of the cutting blade is taken upward is pulled forward and forward. It is easy to vibrate and chip is likely to be damaged. Accordingly, the life of the chip is extended by appropriately setting the negative angle to 0 to 10 degrees.

[0008]

According to the present invention, since the tip is extended almost on the shank width line, it can be used to the end without largely changing the original shape of the tip. In addition, since the shank part is not ground, the chip can be quickly ground, and the grinding wheel is economical without damaging.In addition, since the shank part is not cut, the strength does not decrease, the chatter is reduced, and the life of the chip is also reduced. Long and can be used in good condition. In addition, by taking the inclination of the cutting edge negatively, there is little follow-up after grinding even for chip breaker processing, without losing the thickness of the cutting edge, and in addition, cutting with poor conditions such as intermittent cutting black peeling In addition, the cutting force works to press the insert, and the cutting edge is durable, long-lasting and extremely economical. Further, since the cutting edge is formed in an L-shape, the opening for the chips is easily escaped greatly, and the work is safe and effective.

[Brief description of the drawings]

FIG. 1 is a perspective view of a single-edged brazing tool according to the present invention.

FIG. 2 is a plan view of the single-edged brazing tool of the present invention.

FIG. 3 is a side view of the single-edged brazing tool of the present invention.

FIG. 4 is a front view of the brazing tool of the present invention.

[Explanation of symbols]

 1 Shank 2 Tip A Nose part α Angle of inclination of cutting edge β Angle of inclination of cutting edge

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[Procedure amendment]

[Submission date] July 16, 1997

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claim 1

[Correction method] Change

[Correction contents]

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0003

[Correction method] Change

[Correction contents]

[0003] Most of these cutting tools, which are brazing tools, are manufactured and used in small quantities as needed at each factory. However, the cost increases, and in addition, techniques such as fire shank and brazing work are required. In recent years, the type of carbide brazing tool specified in JISB 4015 has been generally used for the carbide brazing tool. , 32 types and 33 types and 34 types of single-edged cutting tools. The cutting part of these tips is 4 mm to 6 mm from the shank width.
In fact, it is about one-fifth to one-third of the tip width, and the cutting edge is manufactured with an upward inclination of 6 degrees. In such a case, grinding is used. However, loss, breakage, breakage, and the like are greatly ground, and therefore, the shank portion is also ground at one place. As a result, the strength of the shank is also reduced, and the chip strength is also reduced due to the chatter of the shank 1. Also, by grinding the shank to a large extent, the grinding wheel becomes clogged and crushed, which has the disadvantage of causing chipping of the cutting edge or causing partial cracking of the cutting edge due to partial heat generation, thereby increasing the grinding time, Expensive bytes are uneconomical in that they can use only about one-third to one-half of the chip, and moreover,
Processing chip breakers and negative brakes was uneconomical.

[Procedure amendment 3]

[Document name to be amended] Statement

[Correction target item name] 0005

[Correction method] Change

[Correction contents]

[0005]

In order to solve the problems of the present invention, the present cutting tool carbide brazing tool has a shank tip formed substantially in an L-shape, and a rear portion opposite to the tip transverse cutting edge has a shank transverse cross section. Process the seat of the tip mounting shape so that it is on the outer line of the width of the blade side, and also the cutting edge inclination angle as appropriate, braze the tip, put out the blade part, that is, the tip part, and use it for grinding use. It can be used up to the minimum shape of the chip without significantly damaging the shank.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0006

[Correction method] Change

[Correction contents]

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The contents of the present invention will be described below based on an embodiment shown in the drawings. In the carbide brazing tool of the cutting tool according to the present invention, the tip of the shank 1 is formed into an approximately L-shaped nose portion A, and the nose portion A is formed with the rear end of the tip 2 substantially in line with the width line of the shank 1. This is a cutting tool brazing tool for performing a seating process on the shape of the chip 2 and brazing the chip 2 on the seat. Accordingly, the tip 2 can be used to the minimum shape without greatly grinding the shank 1 itself and without reducing the strength of the shank 1 against the retreat of the cutting blade during cutting.

Claims (2)

[Claims] 1. JIS standard byte, 31 type, 32 type, 3
The shank 1 of the brazing tool of type 3 and 34 is formed by forming a nose portion A into an approximately L-shaped nose portion A and brazing and fixing the rear end of the chip 2 so as to be substantially on the line of the width of the shank 1. tool 2. The cutting tool according to claim 1, wherein the tip 2 is brazed and fixed so that the inclination angle of the cutting edge is reduced by about 0 to 10 degrees in front.