Supplementary mechanism that provides a temperature rise and fall effect to a machine tool spindle

A supplementary mechanism that provides a temperature rise and fall effect to a machine tool spindle, mainly used to connect to pipelines between a machine tool spindle and a cooling device, said supplementary mechanism comprising:

• a cold liquid shortcut channel;
• a cold liquid electrical control valve connected to one end of said cold liquid shortcut channel for the liquid of said cooling device to enter;
• a return valve connected to an opposite end of said cold liquid shortcut channel for the liquid to flow out to said cooling device;
• a hot liquid shortcut channel;
• a hot liquid electrical control valve connected to one end of said hot liquid shortcut channel and also connected to said return valve;
• a discharge valve connected to one end of said hot liquid shortcut channel and also connected to said cold liquid electrical control valve;
• a liquid outlet channel having one end thereof connected to said discharge valve and an opposite end thereof provided for a liquid to flow out to said machine tool spindle;
• a reflux liquid inlet channel having one end thereof connected to said hot liquid electrical control valve and an opposite end thereof provided for the liquid returning from said machine tool spindle to enter;
• and
• a pump installed on one of said hot liquid shortcut channel, said reflux liquid inlet channel and said liquid outlet channel and controlled by a control source to drive the liquid therein to move;
• wherein said discharge valve is to ensure that the liquid flowing through only flows to said liquid outlet channel, said return valve is to ensure that the liquid flowing through only flows to said cooling device;
• wherein said control source controls said cold liquid electrical control valve and said hot liquid electrical control valve to switch the liquid flow direction;
• when said control source controls said cold liquid electrical control valve so that the liquid flowing from said cooling device can only flow to said discharge valve, said control source also controls said hot liquid electrical control valve so that the liquid flowing from said reflux liquid inlet channel can only flow to said return valve;
• when said control source controls said cold liquid electrical control valve so that the liquid flowing from said cooling device can only flow to said cold liquid shortcut channel, said control source also controls said hot liquid electrical control valve so that the liquid flowing from said reflux liquid inlet channel can only flow to said hot liquid shortcut channel.