Drill bit
A drill and drilling technology, applied in twist drills, drill accessories, drilling/drilling equipment, etc., can solve problems such as affecting the normal cutting of the drill and damage to the product surface.
Inactive Publication Date: 2015-03-25
常州市瑞鸿达工具有限公司
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- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
When machining hard materials, chips can be removed through the flutes provided on the drill bit, while when machining soft materials, the cuttings are usually continuous and remain in the flutes due to the soft material. Rotating with the drill bit in the middle, affecting the normal cutting of the drill bit, and also causing damage to the surface of the processed product
Method used
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[0013] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
[0014] Such as figure 1 , 2 , a drill bit, comprising a shank 3 and a drilling part 1, and a cutting discharge part 2 coaxially arranged with the shank and the drilling part and integrally formed, and the cutting discharge part is arranged on the shank and the drilling part Between, the drilling part is provided with a helical cutting edge, a helical groove 11 is provided between adjacent cutting edges, and a helical chip removal groove 21 of equal helix angle is provided inside the cutting discharge part. , The end of the cutting discharge part near the shank is provided with a chip hole 4 communicating with the spiral chip flute. Hole cutting is carried out through the drilling part, and the chips formed by the cutting of the drilling part spiral into the cutting discharge part through the spiral groove, and are discharged from the chip dis...
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The invention relates to a drill bit. The drill bit comprises a handle portion, a drilling and cutting portion and a cutting discharge portion, wherein the cutting discharge portion, the handle portion and the drilling and cutting portion are coaxially arranged and integrally formed. The cutting discharge portion is arranged between the handle portion and the drilling and cutting portion. Spiral cutting edges are arranged on the drilling and cutting portion. A spiral groove is formed between every two adjacent cutting edges. Spiral chip removal grooves which are connected with the spiral grooves and have the same spiral angle as the spiral grooves are formed in the cutting discharge portion. Chip removal holes communicated with the spiral chip removal grooves are formed in the portions, close to one side of the handle portion, of the tail end of the cutting discharge portion. Due to the adoption of the scheme, chips produced when the drilling and cutting portion conducts cutting enter the cutting discharge portion and are discharged out of the chip removal holes along the spiral chip removal grooves; in the drilling process, most of the chips are in the chip removal grooves and prevented from making too much direct contact with the machined surface of a product, the influences on drilling are reduced, and meanwhile the surface quality of the machined surface of the product is improved.
Description
technical field [0001] The invention relates to the field of cutting tools, in particular to a drill bit. Background technique [0002] A drill is a tool used to drill through holes or blind holes in solid materials and to ream existing holes. In daily life, sometimes it is necessary to perform hole processing on hard materials, and sometimes it is necessary to perform hole processing on soft materials. Whether it is hole processing on hard materials or soft materials, chip removal is required. When machining hard materials, chips can be removed through the flutes provided on the drill bit, while when machining soft materials, the cuttings are usually continuous and remain in the flutes due to the soft material. The center rotates with the drill bit, which affects the normal cutting of the drill bit and also causes damage to the surface of the processed product. Contents of the invention [0003] In view of the above problems, the object of the present invention is to pr...
Claims
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IPC IPC(8): B23B51/02
CPCB23B51/02B23B2251/408
Inventor 李超
Owner 常州市瑞鸿达工具有限公司