Nano-diamond coating cutting tool and application thereof to mouth rehabilitation ceramic machining

A nano-diamond and cutting tool technology, applied in the field of machining and manufacturing, can solve the problems of ceramic chipping, cutting edge sharpness reduction, ceramic cracking, etc., and achieve the effect of prolonging service life, low friction coefficient and high hardness

Inactive Publication Date: 2014-05-07
SHANGHAI XIANGREN NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When processing pre-sintered ceramics, since ceramics are a typical brittle material, ordinary diamond-coated tools will reduce the sharpness of the cutting edge due to the large coating particles, which will easily cause the ceramics to crack when processing thin-walled ceramics, and cracks will occur inside the ceramics

Method used

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  • Nano-diamond coating cutting tool and application thereof to mouth rehabilitation ceramic machining
  • Nano-diamond coating cutting tool and application thereof to mouth rehabilitation ceramic machining
  • Nano-diamond coating cutting tool and application thereof to mouth rehabilitation ceramic machining

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Embodiment 1 The nano-diamond coating tool provided by the present invention is made

[0019] Step 1: Select the appropriate cemented carbide substrate material

[0020] Since the coating process is carried out at a high temperature above 800°C, the selected base material should be cemented carbide. Before the coating process, selecting the appropriate cemented carbide substrate material for surface treatment has an important impact on the coating effect and the adhesion of the diamond coating. Because in cemented carbide materials, Co is an important binder of cemented carbide powder, and Co can enhance the toughness of materials, so Co is an important element of cemented carbide matrix materials. However, the presence of Co will have a negative impact on the film formation of diamond, so the content of Co should be controlled within a reasonable range. The mass percentage of Co in the selected cemented carbide base material is controlled within 6%, and the grain siz...

Embodiment 2

[0032] Using the nano-diamond-coated tool provided in Example 1, the tool travel is 1400mm / min and the spindle speed is 25000rpm when processing pre-sintered ceramics for dental restoration, and the service life is increased by 25-30% compared with ordinary diamond-coated tools.

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Abstract

The invention relates to a nano-diamond coating cutting tool and the application thereof to mouth rehabilitation ceramic machining. The nano-diamond coating cutting tool is characterized in that (1) the cutting tool is a ball milling cutter, a spiral angle of a spiral groove in a cutting edge of the cutting tool is 30 degrees, and the length of the cutting edge is 2mm; (2) a V-shaped groove is formed in the top of the cutting edge of the cutting tool, a vertical included angle alpha between the V-shaped groove and the center of the cutting tool is equal to 1-5 degrees, an included angle beta is equal to 18-25 degrees, the depth of the V-shaped groove is changed along with the diameter change of the cutting tool, and the depth S value of the V-shaped groove is 10-18 percent of the diameter Phi value of the cutting tool; (3) the cutting edge of the cutting tool is a nano-diamond coating, the diameter of nano-diamond particles is 20-50nm, and the diameter of the head is 2-10mm. When the diameter of the head is less than or equal to 4mm, the diameter of a tool handle is less than or equal to 4mm, and the diameter of a handle part is 4mm; when the diameter of a ball is more than 4mm, the diameter of the handle part is equal to the diameter of the head. When the provided nano-diamond coated cutting tool is applied to pre-sintering ceramic machining for mouth rehabilitation, the feed is 1,400mm/min, and the speed of a main shaft is 25,000rpm. Powder formed by cutting is effectively discharged, the phenomenon of tool breakage is reduced, and the service life is prolonged by 25-30 percent.

Description

technical field [0001] The invention relates to a nano-diamond-coated tool and its application. More precisely, the nano-diamond-coated tool is a tool used for pre-sintered ceramic processing and belongs to the technical field of mechanical processing and manufacturing. Background technique [0002] Ceramic materials have many excellent physical, chemical and mechanical properties due to their unique molecular composition, such as high hardness and strength, strong corrosion resistance, wear resistance, high temperature resistance, etc., in aerospace, petrochemical, Applications in marine development, electrical and electronic, automotive and manufacturing fields are becoming more and more extensive. However, as a typical brittle material, ceramic material is difficult to process, which limits its further application. [0003] In recent years, ceramic materials have become a class of oral restorative materials that have attracted much attention and have broad application pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B28D1/18B23C5/10C23C16/27
Inventor 严国祥
Owner SHANGHAI XIANGREN NEW MATERIALS
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