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Home > Press Release > 2014 > October 27

Development and release of the BreakMaster LD type and GD type, sintered diamond cutting tools with integral chipbreaker

October 27, 2014
Sumitomo Electric Industries, Ltd.

*This press release was issued on October 6, 2014 in Japan.

In October 2014, Sumitomo Electric is launching its new BreakMaster LD type and GD type sintered diamond cutting tools with integral chipbreaker, which provide outstanding chip control over a wide range of aluminum alloy machining applications, from finishing through to semi-finishing.

Sintered diamond cutting tools are used in the machining of automotive components, aerospace components and electronics components. They are particularly widely used for machining aluminum alloy components such as engine blocks, gearbox casing and chassis.

Over the past few years, companies in the automotive and aerospace industries have been responding to rising fuel costs by striving to reduce the weight of components, and there has been increased use of lightweight, non-ferrous-metal materials such as aluminum alloy and CFRP (Carbon Fiber-reinforced Plastic). However, when using softer materials like aluminum alloy, the amount of chips or swarf produced tends to increase, and if chips get caught up in the material being worked or in the tools used during the machining process, this can result in stoppages to automatic production machinery, and becomes an obstacle to the maintenance of stable, efficient machining operations. To help solve this problem, Sumitomo Electric has launched the BreakMaster LD type and GD type sintered diamond cutting tools with integral chipbreaker.*1

1.Special Features of the BreakMaster LD type and GD type

(1)Superb chip control for a wide range of aluminum alloy machining applications, from finishing to semi-finishing
By forming a three-dimensional chipbreaker on the sintered diamond next to the cutting edge, outstanding chip control is achieved in the machining of aluminum alloy components (an area where chip control has tended to be a problem in the past), from finishing to semi-finishing. The BreakMaster LD type is specially designed for use in finishing applications, while the GD type is designed for use in semi-finishing applications, permitting precise removal of chips across a wide range of machining requirements, and facilitating a substantial improvement in operational efficiency.
(2)The use of SUMIDIA DA1000 high-strength sintered diamond ensures high-precision, highly efficient machining
By using SUMIDIA DA1000 high-strength sintered diamond (made by high-density sintering of ultra-fine diamond) as the cutting edge material, BreakMaster provides superb chipping resistance and outstanding abrasion resistance for aluminum alloy machining applications, making it possible to achieve stable, high-precision, highly efficient finishing.

2.Selection

BreakMaster LD type Model No. 27
BreakMaster GD type Model No. 27

Material: High-strength sintered diamond (SUMIDIA DA1000)

3.Sales plan

First year:  ¥100 million / year

After 3 years:  ¥400 million / year

4.Price

(Standard model) LD type NF-DCMT11T304N-LD ¥10,300 (¥11,124 including tax)
(Standard model) GD type NF-DCMT11T304N-GD ¥10,300 (¥11,124 including tax)

BreakMaster LD type and GD type

*1 Chipbreaker:
Protrusions and grooves positioned on the edge of a tool to remove the chips and swarf that form during machining.

  • BreakMaster and SUMIDIA are trademarks or registered trademarks of Sumitomo Electric Industries, Ltd.
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