Title:
【発明の名称】エアペンを使用する彫刻器の振動数設定機構
Document Type and Number:
Japanese Patent JPH0780396
Kind Code:
B2
Abstract:
There is disclosed a vibration frequency setting mechanism of an engraving device provided with air pen. The vibration frequency setting mechanism comprises an engraving device provided with an air pen (11) vibration frequency of which is varied in response to compressed air to be supplied to the holder (12), a vibration frequency detector (12) for detecting the vibration frequency of the air pen (11) and providing a pulse signal (21) corresponding to the vibration frequency, a counter (4) for counting the pulse signal (21), a pressure regulator (1) provided with a regulating terminal (2), a vibration frequency setting circuit (5) for setting the vibration frequency (22) of the air pen(11), a comparator (6) for receiving the output of the counter (4) and the vibration frequency (22) and providing a logical "1" if the output of the counter (4) is greater than the vibration frequency (22) and a logical "0" if the output of the counter (4) is less than the vibration frequency (22), an output circuit (7) for receiving the output of the comparator (6) and decrementing the analog output at a given step if the output of the comparator (6) is a logical "1" and incrementing the analog output at a given step if the output of the comparator (6) is a logical "0", whereby the analog output of the output circuit (7) is supplied to the regulating terminal (2) so that the compressed air is supplied to the holder (12).
Inventors:
Kiichi Hiyama
Application Number:
JP15407589A
Publication Date:
August 30, 1995
Filing Date:
June 16, 1989
Export Citation:
Assignee:
Ando Electric Co., Ltd.
International Classes:
B44B11/00; B44B3/00; (IPC1-7): B44B3/00
Next Patent: 彫刻機