摘要:
PROBLEM TO BE SOLVED: To provide a pulley device of a wire saw apparatus which can be protected from a saw wire when a wire is broken, and is easily manufactured. SOLUTION: The pulley device of the wire saw apparatus has a pulley 12. The pulley device has a fixed protection cover 13 surrounding the pulley 12 at least partially and at least one cover element 23. The cover element 23, in the pulley device 11 which can move along a track formed to be separated in the radius direction from the rotary shaft 15 of the pulley 12, arranges the cover element 23 rotatably in the protection cover 13. Preferably, in order to fix the cover element 23 to the protection cover 13 at a desired adjustment position, a fixing device 41 is installed. More preferably, in order to guide the cover element 23 in relation to the protection cover 13, a guide device 31 for the cover element 23 is installed. COPYRIGHT: (C)2009,JPO&INPIT
摘要:
PROBLEM TO BE SOLVED: To detect certainly malfunctions in a wire saw such as rapture of a wire. SOLUTION: Alternating signals, for example with a high frequency of 500-800 kHz, are applied to a wire seat 4 of this wire saw. If attention is paid to the resonance action generated in the primary circuit formed from the inductance of the wire seat 4 and the relevant electrostatic capacitance, comparing the case with the wire of the wire seat 4 being normal with the case being abnormal such as in rupture allows appearing of a change in the voltage or current between the terminals of the wire seat 4. Detection of malfunctions is conducted by measuring this change. For example of a measuring circuit, an antenna to form a secondary circuit is installed in the grinding zone 1 to measure the voltage change induced in the secondary circuit. COPYRIGHT: (C)2007,JPO&INPIT
摘要:
PROBLEM TO BE SOLVED: To obtain a protection device of a wire saw apparatus which can be simply and later arranged into a portion in which a saw wire is freely guided. SOLUTION: The protection device of a wire saw apparatus 5 includes at least one tube-assembly 11 equipped with at least one tube-element 12 which has a hold space 13 which extends along a longitudinal axis A for a saw wire 7, wherein at least one tube-element 12 has at least one axial opening 23, and the opening can be closed by a closing means. At least one tube-element 12 has a coupling means for strongly combining other at least one tube-element with axial ends 18 and 19 in an axial direction, a coupling means includes at least one pimples 20 and 30 and at least one indentations 21 and 31, and these pimples 20 and 30 are formed so as to become a complementary shape to indentations 21 and 31. COPYRIGHT: (C)2008,JPO&INPIT