Forming T-shaped finishing tool

Abstract

The utility model discloses a forming T-shaped finishing tool which comprises a tool handle and a tool disc, the tool disc is connected to the front end of the tool handle, the tool handle drives the tool disc to rotate, eight cutting parts are evenly distributed on the circumferential face of the tool disc, a blade is installed on the front side face of each cutting part, and the adjacent blades are arranged on the circumferential face of the tool disc in a staggered tooth mode in the axial direction. The front blade obliquely extends backwards to the middle of the periphery of the cutter head from the front end face of the cutter head, the rear blade obliquely extends forwards to the middle of the periphery of the cutter head from the rear end face of the cutter head, cutting intersection parts are arranged in the middles of the front and rear adjacent blades, cutting included angles formed by the blades and the axis of the cutter head are consistent, and the angle range of the cutting included angles is 17-20 degrees. The blades are made of hard alloy materials and connected to the cutter head through screws or welded to the cutter head. The blades are distributed on the cutterhead in a staggered tooth mode, the edge portions of the blades on the two sides can mill the two sides and the bottom face of the groove respectively, the machining precision is improved, and the cutting time is shortened.

Description

Technical Field

[0001] This utility model belongs to the field of machining tool technology, specifically relating to a forming T-shaped precision tool. Background Technology

[0002] For machining grooves on metal parts, if the groove width is small, a tool with a width close to the groove width is generally selected for one-step forming. This cutting method is characterized by low cutting quality and low dimensional accuracy, and it easily causes wear on the tool surface, making it unsuitable for precision groove machining. To ensure machining accuracy, existing methods generally employ a roughing + finishing cutting process. First, a tool with a cutting edge width smaller than the groove width is used to remove excess material from the workpiece surface, leaving a cutting allowance at the bottom and sides of the groove for finishing. Then, a finishing tool with a cutting edge width smaller than the groove width is used to perform precision cutting along the bottom and side contours of the groove. Existing finishing tools have excessively long cutting edges, resulting in greater cutting resistance. The cutting force of the cutting edge must cover both sides and the bottom of the groove, making it difficult for the cutting edge to achieve a good cutting effect at both corners of the groove. Therefore, existing finishing tools need to be improved. Summary of the Invention

[0003] To address the aforementioned problems and technical requirements, this utility model provides a forming T-shaped precision cutter. This cutter enables precision cutting of grooves. The blades have staggered tooth distribution, and the cutting edges of the two blades can mill the two sides and the bottom surface of the groove respectively, improving machining accuracy and reducing cutting time.

[0004] The technical solution of this utility model is as follows: A T-shaped precision cutter includes a shank and a cutter head. The cutter head is connected to the front end of the shank and drives the cutter head to rotate. Eight cutting sections are evenly distributed on the circumference of the cutter head. Each cutting section has a blade mounted on its front side. Adjacent blades are arranged in a staggered toothed pattern along the axial direction on the circumference of the cutter head. The front blade extends obliquely backward from the front end face of the cutter head to the middle of the outer circumference of the cutter head, and the rear blade extends obliquely forward from the rear end face of the cutter head to the middle of the outer circumference of the cutter head. The adjacent blades have a cutting intersection in the middle. The cutting angle formed by the blade and the axis of the cutter head is consistent and the angle range is 17°-20°. The blade is made of cemented carbide and is connected to the cutter head by screws or welded to the cutter head.

[0005] Furthermore, the thickness of the cutter head is 16-20mm, all blades are of the same length, and the axial length of the blades is not less than 1 / 2 of the thickness of the cutter head.

[0006] Furthermore, the diameter of the cutter head ranges from 68mm to 72mm, and the diameter of the cutter shank ranges from 30mm to 32mm.

[0007] Furthermore, the cutter head and the cutter handle are integrally formed parts, and both the cutter head and the cutter handle are made of stainless steel.

[0008] Furthermore, the total length of the cutter head and the cutter shank is 120mm.

[0009] Furthermore, the handle is provided with clamping scale lines, which are etched at a distance of 60mm from the end of the handle.

[0010] Furthermore, the blade is made of tungsten carbide alloy and has a titanium nitride coating on its surface.

[0011] The beneficial effects of this utility model are as follows: The cutter head of this utility model is used for precision cutting of grooves. Adjacent blades are staggered along the axial direction on the circumference of the cutter head. One blade is positioned against the front end face of the cutter head, and the other blade is positioned against the rear end face. The blades on both sides intersect at the middle of the cutter head, ensuring that the entire circumference of the cutter head has a cutting effect. The staggered blades on both sides cut the two side walls of the groove respectively. Due to the staggered design, high cutting efficiency can be ensured, allowing for rapid cutting of the corner allowance and reducing machining time. Furthermore, the blade length is less than the thickness of the cutter head. The shorter blade length reduces the cutting force during machining, and the heat between the tool and the workpiece is more evenly distributed, thereby reducing the machining temperature. The smaller cutting force protects the blade edge, extends its service life, improves the accuracy of the cut surface, and thus improves the quality of the workpiece. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the axial blade mounting structure of the T-shaped precision cutter of this utility model;

[0013] Figure 2 This is a schematic diagram of the end face structure of the T-shaped precision cutter of this utility model;

[0014] The markings in the diagram are: 1. Tool holder, 2. Tool head, 3. Cutting section, 4. Tool insert, 5. Clamping scale line. Detailed Implementation

[0015] The present invention will now be further described with reference to the accompanying drawings and embodiments.

[0016] like Figure 1-2The present invention relates to a T-shaped precision cutter, comprising a handle 1 and a cutter head 2. The front end of the handle 1 is connected to the cutter head 2, and the handle 1 drives the cutter head 2 to rotate. Eight cutting sections 3 are evenly distributed on the circumference of the cutter head 2. Each cutting section 3 has a blade 4 mounted on its front side. Adjacent blades 4 are arranged in a staggered toothed pattern along the axial direction on the circumference of the cutter head 2. The front blade extends obliquely backward from the front end face of the cutter head to the middle of the outer circumference of the cutter head, and the rear blade extends obliquely forward from the rear end face of the cutter head to the middle of the outer circumference of the cutter head. The adjacent blades 4 have a cutting intersection at the middle. The cutting angle formed by the blade 4 and the axis of the cutter head 2 is consistent, and the angle range is 17°-20°. The blade 4 is made of cemented carbide and is connected to the cutter head 2 by screws or welded to the cutter head 2.

[0017] The cutter head 2 and the cutter holder 1 are integrally formed parts, both made of stainless steel. The blade 4 is made of tungsten carbide alloy, and its surface is coated with titanium nitride.

[0018] The thickness of the cutter head 2 is 16-20mm, and all the blades 4 are of the same length, with the axial length of the blade 4 not less than half the thickness of the cutter head. The diameter of the cutter head ranges from 68mm to 72mm, and the diameter of the blade holder ranges from 30mm to 32mm.

[0019] The total length of the cutter head 2 and the tool holder 1 is 120mm. The tool holder 1 is provided with a clamping scale line 5, which is etched at a distance of 60mm from the tail end of the tool holder 1. The clamping scale line is used to indicate the clamping length during machining, which helps to enhance clamping stability.

[0020] The cutter head of this utility model is used for precision cutting of grooves. Adjacent blades 4 are staggered along the axial direction on the circumferential surface of the cutter head 2. One side of the blade 4 is set against the front end face of the cutter head, and the other side of the blade 4 is set against the rear end face of the cutter head 2. The blades 4 on both sides have an intersecting part in the middle of the cutter head. This ensures that the entire circumferential surface of the cutter head has a cutting effect. The staggered blades on both sides cut the two side walls of the groove respectively.

[0021] The above descriptions are merely several preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any variations and substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the scope of protection of this utility model. Therefore, the scope of protection of this utility model should be determined by the scope of the claims.

Claims

1. A T-shaped precision cutter, characterized in that: It includes a tool holder and a cutter head. The front end of the tool holder is connected to the cutter head, which drives the cutter head to rotate. The cutter head has eight cutting sections evenly distributed on its circumference. Each cutting section has a cutting insert mounted on its front side. Adjacent cutting inserts are arranged in a staggered toothed pattern along the axial direction on the circumference of the cutter head. The front cutting insert extends obliquely backward from the front end face of the cutter head to the middle of the outer circumference of the cutter head, and the rear cutting insert extends obliquely forward from the rear end face of the cutter head to the middle of the outer circumference of the cutter head. The cutting inserts of adjacent cutting inserts have a cutting intersection in the middle. The cutting angle formed by the cutting insert and the axis of the cutter head is consistent and ranges from 17° to 20°. The cutting inserts are made of cemented carbide and are connected to the cutter head by screws or welded to the cutter head.

2. The forming T-shaped precision cutter according to claim 1, characterized in that: The thickness of the cutter head is 16-20mm, and all blades are of the same length, with the axial length of the blades not less than 1 / 2 of the thickness of the cutter head.

3. The forming T-shaped precision cutter according to claim 1, characterized in that: The diameter of the cutter head ranges from 68mm to 72mm, and the diameter of the cutter shank ranges from 30mm to 32mm.

4. The forming T-shaped precision cutter according to claim 1, characterized in that: The cutter head and the cutter handle are integrally formed parts, and both the cutter head and the cutter handle are made of stainless steel.

5. The forming T-shaped precision cutter according to claim 1, characterized in that: The total length of the cutter head and the cutter shank is 120mm.

6. The forming T-shaped precision cutter according to claim 1, characterized in that: The handle is provided with clamping scale lines, which are etched at a distance of 60mm from the end of the handle.

7. The forming T-shaped precision cutter according to claim 1, characterized in that: The blade is made of tungsten carbide alloy and has a titanium nitride coating on its surface.

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