Combined file for deburring

Abstract

The utility model relates to a deburring combined file which is mainly used for removing burrs of gear parts and solves the technical problems that in the prior art, when a file is adopted for deburring, a cutting edge is prone to being damaged, the removing difficulty is large, time and labor are wasted, use is inconvenient, and when a special deburring device is adopted for deburring, the cost is high. The cutter comprises a cutter handle and a cutter body, the knife body comprises three sections, the first section is a carbon steel plate file and is connected with the knife handle; the second section is plated with carborundum; the third section is high-speed steel and is provided with a cutting edge; the front angle alpha of the cutting edge ranges from 30 degrees to 60 degrees, and the rear angle beta of the cutting edge ranges from 30 degrees to 60 degrees. The third section accounts for 8%-15% of the length of the cutter body, and the second section accounts for 15%-30% of the length of the cutter body. Through the design of the combined cutter body, the requirements for pre-heating machining and post-heating machining of metal part deburring can be met at the same time, operation is easy, time and labor are saved, the service life is long, and residual hobbing burrs before heating can be easily removed.

Description

Technical Field

[0001] The utility model relates to a burr processing device for metal parts, in particular to a deburring combined file, which is mainly used for removing burrs of gear parts. Background Art

[0002] During the processing of metal parts, it is often necessary to remove the burrs left over from the processing to ensure the quality of the finished product. According to the process, it can be divided into the deburring process of parts that have not been heat-treated (referred to as pre-heat processing) and the deburring process of parts that have been heat-treated (referred to as post-heat processing). The deburring method is generally to use tools such as files to file or scrape. Among them, carbon steel plate files are often used to remove burrs before heat processing, and diamond plate files are often used to remove burrs after heat processing.

[0003] The existing manual deburring method using a file has the following problems:

[0004] (1) Pre-heat processing, especially in gear hobbing, is difficult to remove burrs. Carbon steel plate files require operators to manually grind a cutting edge at the front end, but the manually ground cutting edge is often prone to breakage, and when the burrs are hard, it is easy to scrape them clean, which is time-consuming and labor-intensive, making the operator's labor intensity high.

[0005] (2) The two files need to be used interchangeably during production, which is inconvenient.

[0006] (3) Two tools need to be equipped at the same time, which results in high procurement costs.

[0007] For the hot pre-processing of gear hobbing, special deburring devices can also be used for processing, but such devices require frequent maintenance, and the purchase and use costs are relatively high. In addition, if used improperly, parts may be scratched or not scraped cleanly. Therefore, in actual production, manual deburring with files is still the method of choice.

[0008] Chinese patent CN208961133U discloses a special file for deburring, which can file convex curved surfaces, concave curved surfaces and right-angle grooves. It includes a handle and a blade, one end of the handle is fixedly connected to the blade, and a rectangular parallelepiped and a frustum are also provided on the blade, and the rectangular parallelepiped and the frustum are fixedly connected; the surfaces of the rectangular parallelepiped and the frustum are also provided with tooth patterns. It can be used to remove burrs from powder metallurgy blanks or sintered parts. When deburring, the operator can flexibly use different parts of the file without changing the file type, so as to improve work efficiency and reduce labor intensity. However, this patent is designed based on the problem of burrs on the surface or edge of the pressed blank of powder metallurgy parts, and mainly provides special files for different curved grooves, which is not suitable for gear parts.

[0009] Chinese patent CN220296030U discloses a deburring tool, including a control part, a blade and at least two blade heads, the blade body has a preset length, the blade body includes at least two elastic blocks, the two elastic blocks are relatively connected to one end of the control part, and a gap is formed between the two elastic blocks, the free end of each elastic block is connected to the blade head, and the elastic block can drive the blade head to move relatively close or away; each blade head is provided with at least two protrusions, the two protrusions are arranged along the circumference of the blade head, a chip storage groove is formed between two adjacent protrusions, and a blade part is provided on the protrusion, and the protrusion, the chip storage groove and the blade part all extend along the axial direction of the deburring tool; the patent can be inserted into a deep hole and rotated to remove burrs on the wall of the deep hole, and has the advantages of simple structure and convenient operation. However, the patent is mainly aimed at burrs on the wall of deep holes, and is also not suitable for gear parts. Utility Model Content

[0010] The utility model aims to solve the technical problems in the prior art that burrs are easily damaged when using a file to remove burrs, the removal is difficult, time-consuming and labor-intensive, and inconvenient to use, while the cost of removing burrs using a special deburring device is high, and provides a deburring combination file.

[0011] In order to achieve the above purpose, the technical solutions provided by the utility model are as follows:

[0012] A deburring combined file, which is special in that it comprises a handle and a blade, wherein the blade comprises a first section, a second section and a third section;

[0013] The first section is a carbon steel plate file, one end of which is connected to one end of the handle, and the other end is connected to one end of the second section;

[0014] The surface of the second section is coated with a diamond layer, and the other end is connected to one end of the third section;

[0015] The third section is made of high-speed steel, with a cutting edge at the other end;

[0016] The angle between the cutting edge and its cutting direction is the rake angle α, which ranges from 30° to 60°;

[0017] The angle between the intersection line of the cutting edge and its cutting surface and the perpendicular line to the cutting direction is the back angle β, and the range of the back angle β is 30° to 60°.

[0018] Furthermore, the third section accounts for 8%-15% of the length of the blade, and the second section accounts for 15%-30% of the length of the blade.

[0019] In order to save costs, further, the second section is a carbon steel plate file, which is an integrated structure with the first section; the diamond abrasive layer is plated on the surface of the carbon steel plate file.

[0020] Furthermore, the third section is connected to the second section by welding.

[0021] In order to take into account the unified manufacturing of various use occasions, further, the front angle α is 45° and the rear angle β is 45°. According to the actual workshop needs, other angles can also be used for batch production.

[0022] To save costs, further, the third section accounts for 10% of the length of the blade; the second section accounts for 20% of the length of the blade.

[0023] Furthermore, the thickness of the corundum layer is 0.5 mm.

[0024] Compared with the prior art, the utility model has the following beneficial effects:

[0025] 1. The utility model discloses a deburring combination file. Through the design of the combined blade, a carbon steel file is arranged in the first section, a diamond file is arranged in the second section, and a high-speed steel blade is arranged in the third section and sharpened. The utility model is simple to operate, saves time and effort, and has a long service life. The utility model can simultaneously meet the requirements of pre-heat processing and post-heat processing of deburring metal parts, and has a good deburring effect. The residual pre-heat hobbing burrs can be easily removed through the cutting edge of the high-speed steel section without the occurrence of chipping.

[0026] 2. The utility model is a deburring combination file. Through the design and production practice of the high-speed steel blade structure, the design of the front and rear angles of 45° is adopted, while taking into account the manufacturing cost, the sharpness of the blade and the service life. The structure is simple, the processing is easy, and the service life is long.

[0027] 3. The utility model is a deburring combination file, in which the third section is designed to account for 10% of the total length, the second section accounts for 20% of the total length, and the rest is the first section. While taking into account the needs of on-site operators, it effectively saves manufacturing costs, reduces overall procurement costs, and has good promotion potential. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a three-dimensional structure diagram of a deburring combined file embodiment of the utility model Figure 1 ;

[0029] Figure 2 This is a three-dimensional structure diagram of an embodiment of the utility model. Figure 2 ;

[0030] Figure 3 It is a schematic diagram of the front angle and the rear angle in the embodiment of the utility model.

[0031] The reference numerals are explained as follows: 1 - first section; 2 - second section; 3 - third section, 301 - cutting edge; 4 - handle; α - front angle; β - back angle. DETAILED DESCRIPTION

[0032] The specific technical solutions in the embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0033] See also Figure 1 , a deburring combination file, comprising a handle 4 and a blade;

[0034] In order to solve the problem that the file meets the deburring requirements of both pre-heat processing and post-heat processing, the combined file adopts a segmented structure, and the blade body includes a first segment 1, a second segment 2 and a third segment 3.

[0035] The first section 1 is a carbon steel plate file, one end of which is connected to one end of the tool handle 4, and the other end is connected to one end of the second section 2, and is used to remove burrs before heat processing.

[0036] The second section 2 is a carbon steel plate file, which is an integral structure with the first section 1, with a 0.5 mm diamond layer coated on the surface, and the other end is welded to one end of the third section 3 for removing burrs after thermal processing.

[0037] The third section 3 is made of high-speed steel and is sharpened. A cutting edge 301 is provided at the other end. The angle between the cutting edge 301 and its cutting direction is the front angle α. The angle between the intersection of the cutting edge 301 and its cutting surface and the vertical line of the cutting direction is the back angle β. The front angle α is 45°, and the back angle β is 45°. This structure can easily remove the residual hobbing burrs in the pre-heat processing or scrape off the burrs generated by other processing methods without chipping. It mainly utilizes the good hardness and toughness of high-speed steel. The file with this combined blade structure can cover the deburring needs of most parts.

[0038] In this embodiment, in order to save the manufacturing cost of the combination file, the third section 3 occupies 10% of the length of the blade, the second section 2 occupies 20% of the length of the blade, and the rest is the first section 1.

[0039] The method of using the embodiment of the utility model is as follows:

[0040] (1) Deburring before thermal processing

[0041] The operator holds the handle 4 and uses the cutting edge 301 of the third section 3 to scrape off larger burrs (tooth hobbing burrs), or uses the cutting edge 301 to scrape off smaller burrs, or uses the first section 1 of the carbon steel plate file structure to file off smaller burrs until the burrs are completely removed.

[0042] If the cutting edge 301 of the third section 3 is not sharp enough due to wear, the front cutting edge can be manually sharpened on a grinding wheel for continued use.

[0043] (2) Deburring after heat treatment

[0044] The operator holds the tool handle 4 and uses the diamond-coated surface of the second section 2 to file off smaller burrs until the burrs are completely removed.

[0045] The above description is only an embodiment of the utility model, and is not intended to limit the scope of protection of the utility model. Any equivalent structural transformation made by using the contents of the utility model specification and drawings, or directly or indirectly applied in other related technical fields, is included in the patent protection scope of the utility model. For ordinary technicians in this field, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the utility model. The scope of the utility model is defined by the attached claims and their equivalents.

Claims

1. A deburring combination file, characterized in that: It comprises a knife handle (4) and a knife body; The blade comprises a first section (1), a second section (2) and a third section (3); The first section (1) is a carbon steel plate file, one end of which is connected to one end of the tool handle (4), and the other end of which is connected to one end of the second section (2); The surface of the second section (2) is coated with a diamond layer, and the other end is connected to one end of the third section (3); The third section (3) is made of high-speed steel, and a cutting edge (301) is provided at the other end thereof; The angle between the cutting edge (301) and its cutting direction is a rake angle α, and the range of the rake angle α is 30° to 60°; The angle between the intersection line of the cutting edge (301) and its cutting surface and the perpendicular line to the cutting direction is a back angle β, and the range of the back angle β is 30° to 60°.

2. A deburring combination file according to claim 1, characterized in that: The third section (3) accounts for 8%-15% of the length of the blade, and the second section (2) accounts for 15%-30% of the length of the blade.

3. A deburring combination file according to claim 2, characterized in that: The second section (2) is a carbon steel plate file, which is an integrated structure with the first section (1); The diamond abrasive layer is plated on the surface of the carbon steel plate file.

4. A deburring combination file according to claim 3, characterized in that: The third section (3) is connected to the second section (2) by welding.

5. The deburring combination file according to claim 1, characterized in that: The front angle α is 45°, and the rear angle β is 45°.

6. The deburring combination file according to claim 2, characterized in that: The third section (3) accounts for 10% of the length of the blade; The second section (2) accounts for 20% of the length of the blade.

7. The deburring combination file according to claim 3, characterized in that: The thickness of the diamond sand layer is 0.5 mm.

Images