CN215824291U

CN215824291U - Special trapezoidal thread lathe tool for 45# steel

Info

Publication number: CN215824291U
Application number: CN202120986703.1U
Authority: CN
Inventors: 张大帅; 王雪雪; 张卫东
Original assignee: Jinzhou Jinggong Technology Kunshan Co ltd
Current assignee: Jinzhou Jinggong Technology Kunshan Co ltd
Priority date: 2021-05-10
Filing date: 2021-05-10
Publication date: 2022-02-15
Anticipated expiration: 2031-05-10

Abstract

The utility model discloses a special 45# steel trapezoidal thread turning tool, which comprises a tool handle and a blade body formed at one end of the tool handle, wherein the blade body is of a tetrahedral structure, and the front end surface of the blade body is a trapezoidal surface; one long bottom edge of the trapezoidal surface of the blade body forms a main cutting edge, and two side edges of the blade body connected with the main cutting edge form side edges; the side surface enclosed by the main cutting edge and the two side edges is a front cutter surface, and the trapezoidal surface is a rear cutter surface. The special trapezoidal thread turning tool for 45# steel has good chip removal capacity and chip cutting capacity due to the fact that the V-shaped chip removal groove is additionally formed in the front tool face and the design of the rear end R angle is achieved, and the tool tip is designed into the C angle, so that the problem that the tool tip is broken is solved. The problems that the tool tip is easy to break when threads are turned on 45# steel, the tool tip is easy to accumulate to form cutting built-up edges during rough machining, and the cutting is difficult to break can be solved.

Description

Special trapezoidal thread lathe tool for 45# steel

Technical Field

The utility model relates to a turning tool, in particular to a special trapezoidal thread turning tool for 45# steel.

Background

The trapezoidal thread is a common form in lathe machining and has wide application. The turning tool is generally used in a thread transmission used by a machine, but the phenomenon that the turning tool is stuck when the 45# steel is used for machining a trapezoidal thread is common, the tool tip is easy to break, and the tool tip is easy to accumulate to form a cutting edge and is difficult to break during rough machining, which are problems difficult to overcome in turning.

Disclosure of Invention

In order to overcome the defects, the utility model provides a special trapezoidal threading tool for 45# steel, which can solve the problems that a tool tip is easy to break when threads are turned on the 45# steel, the tool tip is easy to accumulate to form cutting edges during rough machining, chips are not easy to break and the like.

The technical scheme adopted by the utility model for solving the technical problem is as follows: a special 45# steel trapezoidal thread turning tool comprises a tool handle and a blade body formed at one end of the tool handle, wherein the blade body is of a tetrahedral structure, and the front end face of the blade body is a trapezoidal face; one long bottom edge of the trapezoidal surface of the blade body forms a main cutting edge, and two side edges of the blade body connected with the main cutting edge form side edges; the side surface enclosed by the main cutting edge and the two side edges is a front cutter surface, and the trapezoidal surface is a rear cutter surface.

As a further improvement of the present invention, a side of the rake face close to the main cutting edge is a first plane, and a side far away from the main cutting edge is a first arc-shaped surface, and the first plane and the first arc-shaped surface form a V-shaped chip groove.

As a further improvement of the present invention, the rake angle of the first plane is 15 ° to 20 °.

As a further improvement of the present invention, the relief angle of the main cutting edge is 3 ° to 5 °.

As a further development of the utility model, the rake angle of the side edges is 15 °.

As a further improvement of the present invention, the relief angle of the side edge is 6 ° to 10 °.

In a further improvement of the present invention, a cutting edge is formed between the main cutting edge and the side cutting edge, and the cutting edge has a C-shaped chamfer structure.

As a further improvement of the utility model, the diameter of the knife handle is 8.0-12.0 mm.

As a further improvement of the utility model, the diameter of the cutter body is 8.0-12.0 mm.

The utility model has the beneficial effects that: the special trapezoidal thread turning tool for 45# steel has good chip removal capacity and chip cutting capacity due to the fact that the V-shaped chip removal groove is additionally formed in the front tool face and the design of the rear end R angle is achieved, and the tool tip is designed into the C angle, so that the problem that the tool tip is broken is solved. The problems that the tool tip is easy to break when threads are turned on 45# steel, the tool tip is easy to accumulate to form cutting built-up edges during rough machining, and the cutting is difficult to break can be solved.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged view of part A of FIG. 1;

FIG. 3 is a side view of FIG. 1;

FIG. 4 is an enlarged view of the portion B of FIG. 3;

FIG. 5 is a schematic view of the present invention in use.

The following description is made with reference to the accompanying drawings:

1-a knife handle; 2-blade body;

3-main cutting edge; 4-side edge;

5-a front knife surface; 6-flank face;

51-first plane; 52-first arcuate surface;

7-the knife tip.

Detailed Description

The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

Referring to fig. 1-5, the special 45# steel trapezoidal threading tool comprises a tool shank 1 and a blade body 2 formed at one end of the tool shank, wherein the blade body is of a tetrahedral structure, and the front end face of the blade body is a trapezoidal face. One long bottom side of the trapezoidal surface of the blade body 2 forms a main cutting edge 3, and two side edges of the blade body 2 connected with the main cutting edge 3 form side edges 4. The side surface enclosed by the main cutting edge 3 and the two side edges 4 is a rake surface 5, and the trapezoidal surface is a flank surface 6.

Wherein, the side of the rake face 5 close to the main cutting edge is a first plane 51, and the side far away from the main cutting edge 3 is a first arc-shaped surface 52, and the first plane 51 and the first arc-shaped surface 52 form a V-shaped chip groove. Namely, the V-shaped chip groove is formed by a first plane with a front angle of 15-20 degrees, the rear end of the V-shaped chip groove is matched with an R6 circular arc to be transited to an upper end reference plane, and a rear angle of a main cutting edge is 3-5 degrees.

The rake angle of each side edge 4 on both sides is 15 °, the side relief angle is 6 ° to 10 °, and a sharp side edge with a relief angle is formed between the rake face and the side relief angle to improve the cutting force of the side edge.

The main cutting edge and the side cutting edge form a tool nose 6 which is a C-shaped chamfer structure formed by chamfering C0.03-C0.05 respectively so as to improve the strength of the tool nose.

The diameter of the knife handle is 8.0-12.0 mm, and the diameter of the knife body is 8.0-12.0 mm.

Referring to fig. 5, the working state of the special 45# steel trapezoidal thread turning tool has good chip removal capacity and chip cutting capacity due to the fact that the V-shaped chip removal groove is additionally formed in the front tool face and the rear end R angle is designed, and the tool nose is designed into the C angle, so that the problem that the tool nose is broken is solved. The problems that the tool tip is easy to break when threads are turned on 45# steel, the tool tip is easy to accumulate to form cutting built-up edges during rough machining, and the cutting is difficult to break can be solved.

In the previous description, numerous specific details were set forth in order to provide a thorough understanding of the present invention. The foregoing description is only a preferred embodiment of the utility model, which can be embodied in many different forms than described herein, and therefore the utility model is not limited to the specific embodiments disclosed above. And that those skilled in the art may, using the methods and techniques disclosed above, make numerous possible variations and modifications to the disclosed embodiments, or modify equivalents thereof, without departing from the scope of the claimed embodiments. Any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present invention are within the scope of the technical solution of the present invention.

Claims

1. The utility model provides a 45# special trapezoidal thread lathe tool of steel, includes handle of a knife (1) and the sword body (2) that are formed at handle of a knife one end, its characterized in that: the blade body is of a tetrahedral structure, and the front end face of the blade body is a trapezoidal face; one long bottom edge of the trapezoidal surface of the blade body forms a main cutting edge (3), and two side edges of the blade body connected with the main cutting edge (3) form side edges (4); the side surface enclosed by the main cutting edge (3) and the two side edges (4) is a front cutter surface (5), and the trapezoidal surface is a rear cutter surface (6).

2. The special 45# steel trapezoidal thread turning tool as claimed in claim 1, characterized in that: rake face (5) are close to one side of main cutting edge is first plane (51), and keeps away from main cutting edge one side is first arcwall face (52), first plane and first arcwall face form V type chip groove.

3. The special 45# steel trapezoidal thread turning tool of claim 2, wherein: the front angle of the first plane is 15-20 degrees.

4. The special 45# steel trapezoidal thread turning tool of claim 2, wherein: the relief angle of the main cutting edge is 3-5 degrees.

5. The special 45# steel trapezoidal thread turning tool as claimed in claim 1, characterized in that: the front angle of the side edge (4) is 15 degrees.

6. The special 45# steel trapezoidal thread turning tool as claimed in claim 1, characterized in that: the back angle of the side edge (4) is 6-10 degrees.

7. The special 45# steel trapezoidal thread turning tool as claimed in claim 1, characterized in that: a tool nose (7) is formed between the main cutting edge and the side edge, and the tool nose is of a C-shaped chamfer structure.

8. The special 45# steel trapezoidal thread turning tool as claimed in claim 1, characterized in that: the diameter of the knife handle is 8.0-12.0 mm.

9. The special 45# steel trapezoidal thread turning tool as claimed in claim 1, characterized in that: the diameter of the cutter body is 8.0-12.0 mm.