Abstract: The present invention relates to a transmission apparatus, which comprises a base, a transmission module, a first protection sleeve, and a second protection sleeve. The transmission module is disposed on the base and includes a moving unit. The first protection sleeve is disposed around the outer periphery of the transmission module and on the base. One end of the second protection sleeve is covered by the first protection sleeve. The second protection sleeve is disposed around the moving unit and moves linkedly along the moving unit. Thereby, the transmission apparatus according to the present invention may protection the transmission module.

Abstract: The present invention provides an inductive electrochemical machining device, which comprises a base, an inductive machining electrode, and a negative cleaning module. The base includes a workpiece machining zone. The inductive machining electrode is disposed on the base and corresponds to said workpiece machining zone. The negative cleaning module is opposing to the inductive machining electrode. When the inductive machining electrode performs electrochemical machining, the generated induction current may be used for machining. In addition, the surface of the inductive machining electrode may be cleaned concurrently by the negative cleaning module.

Abstract: The present invention relates to an electrochemical machining device, which comprises a machining electrode, a driving module, a spacer, and a conductive electrode. The machining electrode includes an electrochemical machining zone. The driving module drives the machining electrode. The spacer is adjacent to the machining electrode. The conductive electrode is adjacent to the spacer. The spacer spaces the conductive electrode and the machining electrode. When the electrochemical machining device performs electrochemical processes, the driving module drives the machining electrode and moves a machining surface of the machining electrode.