Cutter for removing burrs on cross line of through hole of inner cavity

Abstract

The utility model discloses an inner cavity through hole cross line burr removing tool which comprises a tool bit and a tool handle. The cutter handle is of a cylindrical structure, an inner hole is formed in the front end, and the diameter of the inner hole is larger than that of the cutter head. The tool bit comprises a front tool face, a rear tool face and a base, the angle of the front tool face ranges from 10 degrees to 20 degrees and is an inclined face, the angle of the rear tool face ranges from 6 degrees to 12 degrees, a section of arc is arranged on a cutting edge, and the base is connected with the rear tool face and inserted into an inner hole of the tool handle. The arc position of the rear tool face is attached to a cross hole of a part, burrs of the cross hole are removed by moving along the cross hole, the structure is simple, operation is convenient, and production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to a tool for removing burrs on the cross lines of an inner cavity through hole, belonging to the technical field of parts processing. Background Art

[0002] Deburring parts involves removing burrs or flash formed at the intersection of two surfaces. Burr removal significantly improves product quality, and is particularly crucial for aerospace products. While typical burrs exposed on the outside are easily removed using traditional deburring tools, burrs located inside parts, such as those at the intersecting holes of a stripper handwheel, are difficult to remove with traditional deburring tools.

[0003] Conventional processing methods currently have the following major issues: First, traditional deburring tools have long blades, making them incapable of penetrating small holes to reach the base of the blade to remove burrs; second, traditional deburring tools are standard, purchased tools with limited shank lengths, making them incapable of removing burrs from deep holes; and third, the number of parts requiring deburring of cross-holes is relatively small, making the purchase of specialized deburring tools expensive. Consequently, the cost of producing a qualified product using existing technology is high. Utility Model Content

[0004] The technical problem solved by the utility model is to overcome the deficiencies of the prior art and propose a tool for removing burrs on the cross lines of inner cavity through holes. The burrs in the cross holes of the inner cavities of parts can be effectively removed through the design of the tool head and the reliable connection between the tool handle and the tool head.

[0005] The technical solution of this utility model is:

[0006] A tool for removing burrs on the cross lines of an inner cavity through hole, comprising a tool head and a tool handle;

[0007] The handle is a cylindrical structure with an inner hole at the front end, and the diameter of the inner hole is larger than the diameter of the cutter head;

[0008] The cutter head includes a rake face, a flank face and a base; the rake face has an angle of 10 to 20 degrees and is a bevel; the flank face has an angle of 6 to 12 degrees and has an arc on the blade; the base is connected to the flank face and is inserted into the inner hole of the shank.

[0009] Furthermore, the inner hole diameter of the tool handle is 0.1 mm larger than the diameter of the tool head base, and the tool head is inserted into the inner hole with clearance fit.

[0010] Furthermore, the distance from the cutting edge to the rake face is 2 mm to 3 mm.

[0011] Furthermore, the length and diameter of the tool holder are changed according to the depth and diameter of the inner hole of the part.

[0012] Furthermore, the cutter head is a carbon steel cutter head that has been subjected to an overall quenching treatment.

[0013] Furthermore, a countersunk hole is formed on the side wall of the tool handle close to the inner hole, and a threaded hole is formed on the base, and the countersunk hole and the threaded hole are connected by screws.

[0014] Furthermore, the shank is provided with a countersunk hole at a distance of 15 mm from the inner hole.

[0015] Furthermore, the arc of the back cutting surface fits the cross hole in the inner cavity of the part, and the tool moves along the cross hole to remove burrs.

[0016] The advantages of this utility model compared with the prior art are:

[0017] (1) The blade of the rear blade of the cutter head of the utility model has an arc section, which facilitates the fit of the cutter and the cross hole of the inner cavity, so that the cutter can move along the cross hole to remove burrs.

[0018] (2) The front cutting edge of the cutter head of the utility model is an inclined surface, and the chips are discharged along the front cutting edge without scratching the surface of the part.

[0019] (3) The overall structure of the utility model is simple and reliable, easy to disassemble and transport, and the length and diameter of the shank can be changed according to the depth and diameter of the inner hole of the part. It has high applicability and strong operability. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present invention. The same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0021] Figure 1 This is a schematic diagram of the structure of a tool for removing burrs on the cross lines of inner cavity through holes according to an embodiment of the utility model. DETAILED DESCRIPTION

[0022] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0023] The utility model provides a tool for removing burrs at the intersection of inner cavity through holes, which is used for removing burrs at the intersection of inner cavity holes. The tool comprises a tool head, a tool handle and a screw.

[0024] The tool handle is made of stainless steel, and its length and diameter can be changed to match the depth and diameter of the part's internal hole, ensuring interchangeability. The connection with the tool head features an internal hole with a larger diameter than the tool head, creating a clearance fit. A countersunk hole is located near the end of the internal hole.

[0025] The cutter head is made of ordinary carbon steel and is quenched to ensure the hardness requirements. The front angle of the cutter head blade is 10-20°, and the front cutting surface is beveled. The chips flow out along the front cutting surface and will not scratch the surface of the part. The back angle of the blade is 6-12°, and the back cutting surface of the blade has an arc, which makes it easier for the cutting edge of the tool to fit the cross hole of the inner cavity, so that the tool can move along the cross hole to remove burrs. The distance from the tip of the blade cannot be too long to prevent scratching the surface of the part, and is set to 2mm-3mm. The cutter head is provided with a threaded hole, which is connected to the countersunk hole on the shank by screw 3 to ensure the strength of the overall tool rod.

[0026] The overall length of the cutter head is 50mm, the diameter is 8mm, and there is an M4 threaded hole 15mm from the end;

[0027] The handle is 150mm long and 12mm in diameter. The inner hole diameter at the connection with the cutter head is 8.1mm and the depth is 30mm. There is a Countersunk holes and M4 threaded holes;

[0028] The present invention will be further described below in conjunction with the embodiments:

[0029] like Figure 1 As shown, the inner cavity through hole cross line burr removal tool includes a tool head 1, a tool handle 2 and a screw 3.

[0030] The overall length of the cutter head 1 is 50mm, the diameter is 8mm, and there is an M4 threaded hole 15mm away from the end. The arc length is 2mm and the arc The cutter head 1 is fully quenched to ensure the hardness of HRC50~65.

[0031] The length of the handle 2 is 150mm, the diameter is 12mm, the inner diameter of the connection with the cutter head is 8.1mm, the depth is 30mm, and there is a The countersunk hole is connected to the threaded hole on the cutter head 1 by screws 3 to ensure the strength of the entire cutter bar.

[0032] This tool manually removes burrs by fitting the arc of the back face of the cutter head to the cross hole of the part and moving the tool along the cross hole.

[0033] The above-described embodiments are only preferred specific implementation methods of the present invention. Common changes and substitutions made by those skilled in the art within the scope of the technical solution of the present invention should be included in the protection scope of the present invention.

Claims

1. A tool for removing burrs from intersecting lines of inner cavity through holes, characterized in that: Including blade and handle; The handle is a cylindrical structure with an inner hole at the front end, and the diameter of the inner hole is larger than the diameter of the cutter head; The cutter head includes a rake face, a flank face and a base; the rake face has an angle of 10 to 20 degrees and is a bevel; the flank face has an angle of 6 to 12 degrees and has an arc on the blade; the base is connected to the flank face and is inserted into the inner hole of the shank.

2. The tool for removing burrs from intersecting lines of inner cavity through holes according to claim 1, characterized in that: The inner hole diameter of the tool handle is 0.1mm larger than the diameter of the tool head base, and the tool head is inserted into the inner hole with clearance fit.

3. The tool for removing burrs from intersecting lines of inner cavity through holes according to claim 1, characterized in that: The distance from the tip of the knife to the cutting edge of the rake face is 2mm to 3mm.

4. The tool for removing burrs from intersecting lines of inner cavity through holes according to claim 1, characterized in that: The tool holder length and diameter are changed according to the depth and diameter of the part's inner hole.

5. The tool for removing burrs from intersecting lines of inner cavity through holes according to claim 1, characterized in that: The cutter head is a carbon steel cutter head that has been subjected to overall quenching treatment.

6. The tool for removing burrs from intersecting lines of inner cavity through holes according to claim 1, characterized in that: A countersunk hole is provided on the side wall of the tool handle close to the inner hole, and a threaded hole is provided on the base. The countersunk hole and the threaded hole are connected by screws.

7. The tool for removing burrs from intersecting lines of inner cavity through holes according to claim 6, characterized in that: The handle is provided with a countersunk hole 15mm away from the inner hole.

8. The tool for removing burrs from intersecting lines of inner cavity through holes according to claim 1, characterized in that: The arc of the back cutting edge fits the cross hole in the inner cavity of the part, and the tool moves along the cross hole to remove burrs.

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