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Novel brazing diamond fine hole drill for drilling hard and brittle materials

A technology of hard and brittle materials and diamond, which is applied in the production field of superabrasive drill bits, can solve the problems of inability to process drill teeth and difficult arrangement, etc., and achieve the effects of good drilling stability, improved stability and improved efficiency

Pending Publication Date: 2018-07-06
江苏韦尔博新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The implementation of this drill bit has a certain application range (25mm ~ 150mm), and the top drill teeth can only be used for large hole drill bits, and the drill teeth cannot be processed on fine drill bits and it is not easy to arrange abrasive particles.

Method used

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  • Novel brazing diamond fine hole drill for drilling hard and brittle materials
  • Novel brazing diamond fine hole drill for drilling hard and brittle materials
  • Novel brazing diamond fine hole drill for drilling hard and brittle materials

Examples

Experimental program
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Effect test

Embodiment 1

[0034] Design a brazed diamond drill bit that can be used for drilling hard ceramic materials and drilling blind holes. The drilling diameter is 6mm and the depth is 30mm.

[0035] In this embodiment, since the drilling is required to be a blind hole, and the hole diameter is small, the debris is not easy to discharge, and the coolant needs to be injected from the core to discharge the debris, and the drilling is required to be sharp so as not to block the core hole. The specific plan is as follows:

[0036] The base material is 40Cr steel, the average particle size of the diamonds arranged at the upper end is 0.35 mm, the outer diameter of the base is 5.2 mm, the size of the inner hole 3 is 2.8 mm, the wall thickness of the drilling shank 2 is 1.2 mm, and the width of the top wide groove 5 is 5 mm. The depth of the wide groove is 2mm; the number of thin grooves 1 on the top of the drill bit is determined to be 3 according to the aforementioned formula, and the depth of the th...

Embodiment 2

[0042] In this embodiment, a wide groove 5 is arranged on the top of the drilling head, the width is equal to 1 / 3 of the diameter of the inner hole 3, and the depth is 1 mm. The diamond abrasive grains are embedded in the fine groove 1, that is, the top fine groove diamond 4, and the diamond abrasive grains are arranged on the rest of the top of the drilling head and the top side wall, which are respectively the top diamond 6 and the side diamond 7, and the side wall is arranged The cloth width is 3mm~12mm; the height of the diamond abrasive grains embedded in the fine grooves is 1.0~1.3 times the depth of the fine grooves, and the width of the fine grooves is 1.3~1.6 times the diameter of the diamond abrasive grains

[0043] The matrix material is steel, the diamond particle size arranged at the upper end is 0.15mm, the outer diameter of the matrix is ​​3mm, the wall thickness of the drilling shank 2 is 0.8mm, the width of the top wide groove 5 is 1mm, and the groove depth is ...

Embodiment 3

[0045] In this embodiment, a wide groove 5 is arranged on the top of the drilling head, the width is equal to 1 / 4 of the diameter of the inner hole 3, and the depth is 1 mm. The diamond abrasive grains are embedded in the fine groove 1, that is, the top fine groove diamond 4, and the diamond abrasive grains are arranged on the rest of the top of the drilling head and the top side wall, which are respectively the top diamond 6 and the side diamond 7, and the side wall is arranged The cloth width is 3mm~12mm; the height of the diamond abrasive grains embedded in the fine grooves is 1.0~1.3 times the depth of the fine grooves, and the width of the fine grooves is 1.3~1.6 times the diameter of the diamond abrasive grains

[0046] The matrix material is steel, the diamond grain size arranged at the upper end is 0.5mm, the outer diameter of the matrix is ​​1.2mm, the wall thickness of the drilling shank 2 is 0.9mm, the top wide groove 5 has a width of 1mm, and a groove depth of 1mm. ...

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Abstract

The invention discloses a novel brazing diamond fine hole drill for drilling hard and brittle materials and belongs to the field of manufacturing of super-hard abrasive drill bits. The novel brazing diamond fine hole drill comprises a transferring base, a drilling handle and a drilling head, the drill bit transferring base is used for being connected with drilling equipment, and the drilling handle is of a cylindrical fine and long structure. The drilling head is a drilling work position, the length of the drilling handle is larger than the drilling depth required by work, and the drilling handle is connected. The core part, connected with the base, of the drilling handle is a hole and is used for allowing cooling liquid to pass through. A wide groove is formed in the top end of the drillbit, a plurality of fine grooves are formed in the top of the two sides of the wide groove, and diamonds are distributed in the fine grooves and other positions at the top of the drill bit. The designed drill bit has the advantages of being high in drilling efficiency, long in drilling life, stable in drilling process and the like and can be widely applied to machining of fine holes, long holes, blind holes and the like of the hard and brittle materials such as ceramics, marble and crystals.

Description

technical field [0001] The invention belongs to the production field of superhard abrasive drill bits, and specifically refers to a novel brazed diamond fine-hole drill used for drilling hard and brittle materials. Background technique [0002] Diamond drill bits are mainly used for drilling and coring on hard and brittle materials such as ceramics, glass, and marble. It is higher than hard and brittle materials such as ceramics and glass, and diamond abrasive grains have a certain degree of self-sharpening, so they can be drilled on the above materials. [0003] Commonly used diamond drill bits are mostly prepared by mixing and sintering a certain component of metal alloy and diamond to consolidate and hold the diamond. Because the diamond is not completely firmly held, the diamond particles are easy to fall off and the exposure is not high. It is very easy to cause the drill bit to be blocked during the process, so that the drill bit loses its drilling performance. Simil...

Claims

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Application Information

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IPC IPC(8): B28D1/14B23K35/30B23K1/00
CPCB23K1/0008B23K35/3033B28D1/146Y02P70/10
Inventor 肖博林宗良肖冰
Owner 江苏韦尔博新材料科技有限公司
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