CN204449429U - A kind of drilling cutters - Google Patents

Abstract

The utility model discloses a drilling tool, which comprises a tool body and a cutting blade. The tool body includes a cutting part and a shank. The head of the cutting part is provided with a blade installation groove. In the blade installation groove, the cutting part is provided with a chip removal groove extending from the blade installation groove to the shank. The side of the anti-impact reinforcement block is provided with an installation groove for an anti-impact reinforcement block, and the anti-impact reinforcement block is installed in the installation groove of the anti-impact reinforcement block. The utility model has the advantages of simple structure, convenient manufacture, low cost and good anti-impact wear performance, etc. advantage.

Description

a drilling tool

technical field

The utility model relates to the technical field of drilling processing tools, in particular to a drilling tool.

Background technique

In the existing general drilling tools used for metal cutting, the hardness of the head of the cutting part is the same as that of the body. The high temperature and high-calorie chips generated during cutting have a great impact on the side of the cutting blade mounting groove, and the head of the cutting part has the same hardness as the body. The cutting temperature of the part is very high, and the chips will cause greater impact wear, which seriously affects the life of the drilling tool.

Patent document CN1655900A discloses a cutting insert with a central edge and a peripheral edge and the installation position of the cutting insert on the drilling tool body, so that only moderate cutting force is received when entering the workpiece, while ensuring good balance; patent document CN101547763A Disclosed are an indexable drilling tool and a method for arranging blades in the indexable drilling tool, so that the drilling tool has stable cutting performance and can suppress burrs at the exit of a machined hole. However, the above two patent documents do not involve the failure mode of the drilling tool, that is, most of the drilling tool failures during use are due to the impact wear caused by the high-temperature and high-heat chips of the drilling tool, so it is impossible to effectively avoid the damage caused by the chips. impact wear problems.

Utility model content

The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a drilling tool with simple structure, convenient manufacture, low cost and good impact and wear resistance.

In order to solve the above technical problems, the utility model adopts the following technical solutions: a drilling tool, including a tool body and a cutting blade, the tool body includes a cutting part and a handle, and the head of the cutting part is provided with a blade mounting groove , the cutting blade is installed in the blade mounting groove, the cutting part is provided with a chip removal groove extending from the blade mounting groove to the shank, and the drilling tool also includes an impact-resistant reinforcement block, so The cutting part is provided with an anti-impact reinforcement block installation groove on the side of the blade installation groove, and the anti-impact reinforcement block is installed in the anti-impact reinforcement block installation groove.

As a further improvement of the above technical solution:

The cutting part is provided with a coolant passage running through the entire cutting part from the end surface.

The anti-impact reinforcement block is fixedly installed in the installation groove of the anti-impact reinforcement block by fastening screws.

The impact-resistant reinforcement block is a cemented carbide reinforcement block or a polycrystalline cubic boron nitride reinforcement block.

Compared with the prior art, the utility model has the advantages that: by setting the anti-shock reinforcing block installation groove at the position where the cutting part is impacted by high temperature and high-calorie chips, and installing the anti-impact strengthening block in the anti-shock strengthening block installation groove, Prevent chips from directly impacting the side of the insert installation groove, and the impact-resistant strengthening block prolongs the breakage time of the impacted position of the cutting part, thereby improving the service life of the drilling tool.

Description of drawings

Fig. 1 is the front view of the utility model drilling tool.

Fig. 2 is a top view of the utility model drilling tool.

Fig. 3 is a partial enlarged view of the cutting part in the utility model.

Fig. 4 is a schematic diagram of the installation of the anti-shock reinforcing block in the utility model.

Each label in the figure indicates: 1. Cutting part; 11. Blade installation groove; 12. Impact-resistant reinforcement block installation groove; 13. Chip removal groove; 14. Coolant channel; 2. Shank; 3. Cutting blade; 4. Impact-resistant strengthening block; 5. Fastening screws.

Detailed ways

The utility model will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

As shown in Figures 1 to 4, the drilling tool of this embodiment includes a tool body and a cutting insert 3, the tool body includes a cutting part 1 and a handle 2, the head of the cutting part 1 is provided with a blade mounting groove 11, and the cutting The blade 3 is installed in the blade mounting groove 11, and the cutting part 1 is provided with a chip removal groove 13 extending from the blade mounting groove 11 to the shank 2. The side of the anti-shock reinforcement block installation groove 12 is provided, the impact resistance reinforcement block 4 is installed in the installation groove 12 of the impact resistance reinforcement block, and the chip discharge groove 13 controls the discharge of chips. Set the anti-impact reinforcement block installation groove 12 at the position, and install the anti-impact reinforcement block 4 in the installation groove 12 of the anti-impact reinforcement block, so as to prevent the chips from directly impacting the side of the blade installation groove 11, and the anti-impact reinforcement block 4 extends the impact position of the cutting part 1 Breakage time, thus improving the service life of drilling tools.

In this embodiment, the cutting part 1 is provided with a coolant channel 14 that runs through the entire cutting part 1 from the end surface. During cutting, the coolant is sprayed from the coolant channel 14 to cool and lubricate the cutting blade 3 .

In this embodiment, the impact-resistant reinforcement block 4 is fixedly installed in the impact-resistant reinforcement block installation groove 12 by fastening screws 5, which facilitates the installation and replacement of the impact-resistant reinforcement block 4. Except for this embodiment, welding can also be used to weld the impact-resistant The reinforcing block 4 is fixedly installed.

The impact-resistance reinforcement block 4 can be made of cemented carbide reinforcement block or polycrystalline cubic boron nitride (PCBN) reinforcement block, so that the heat resistance of the impact-resistance reinforcement block 4 is higher than that of the cutting part 1, and the impact and wear resistance is also improved. higher than cutting part 1.

Although the present invention has been disclosed above with preferred embodiments, it is not intended to limit the present invention. Any person familiar with the art, without departing from the scope of the technical solution of the present utility model, can use the technical content disclosed above to make many possible changes and modifications to the technical solution of the utility model, or modify it into an equivalent change, etc. effective example. Therefore, any simple modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention shall fall within the protection scope of the technical proposal of the present invention.

Claims (4)

1. A drilling tool, including a tool body and a cutting blade (3), the tool body includes a cutting part (1) and a shank (2), and the head of the cutting part (1) is provided with a blade mounting groove (11), the cutting blade (3) is installed in the blade installation groove (11), and the cutting part (1) has a The chip flute (13) is characterized in that: the drilling tool also includes an impact-resistant reinforcement block (4), and the cutting part (1) is provided with an impact-resistant reinforcement on the side of the blade installation groove (11) A block installation groove (12), the anti-impact strengthening block (4) is installed in the anti-impact strengthening block installation groove (12). 2 . The drilling tool according to claim 1 , characterized in that: the cutting part ( 1 ) is provided with a coolant channel ( 14 ) penetrating the entire cutting part ( 1 ) from the end surface. 3. The drilling tool according to claim 1, characterized in that: the impact-resistant reinforcement block (4) is fixedly installed in the impact-resistant reinforcement block installation groove (12) by fastening screws (5). 4. The drilling tool according to any one of claims 1 to 3, characterized in that: the impact-resistant reinforcement block (4) is a cemented carbide reinforcement block or a polycrystalline cubic boron nitride reinforcement block.