(Recasts with company confirmation)
* Says to make announcement later on Wednesday
* Kyocera to buy all Unimerco shares by July 11
* Kyocera to spend $247.2 mln on acquisition -Nikkei
TOKYO, June 29 (Reuters) - Kyocera Corporation plans to buy Danish carbide tool maker Unimerco in a deal reportedly worth $247.2 million, helping the Japanese electronics firm boost its presence in Europe and bolster sales from the automobile and aviation sectors.
Kyocera spokeswoman Chikako Morioka said the Kyoto-based firm will make an official announcement later on Wednesday. She declined to provide the cost of the acquisition.
"We've been trying to bolster our business presence in Europe and make this segment a source of stable revenue," Morioka said.
The Nikkei business daily said Kyocera's European supervisory firm will buy all Unimerco shares from its founders and others by July 11 for about 20 billion yen.
Founded in 1964, Unimerco manufactures customized carbide tools for automobile, aircraft.
Unimerco, whose clients include Audi AG , aircraft makers Airbus SAS and Rolls-Royce Group Plc generates sales of roughly 10 billion yen a year, the Nikkei said.
A latecomer to carbide tools, Kyocera competes with Mitsubishi Materials Corp , Sumitomo Electric Industries Ltd and Tungaloy Corp, the Nikkei said.
Kyocera's shares gained 1.5 percent to 8,240 yen while the benchmark Nikkei 225 index rose 1.2 percent. ($1 = 81.105 Japanese Yen) (Reporting by Mariko Katsumura in Tokyo and Rachana Khanzode in Bangalore; Editing by Edwina Gibbs)