Workpiece Spindle

Abstract

A workpiece spindle comprises a spindle, a spindle motor and an actuator. The spindle is dynamically connected to the spindle motor and has a first channel and a second channel connected to the first channel. The first channel is assembled with a lathe center, the actuator is provided with an actuating rod disposed outside the spindle corresponding to the second channel. The workpiece spindle limits rotation of the spindle by displacing the actuating rod of the actuator by a first actuation distance relative to the second channel, and the workpiece spindle drives the lathe center to displace in the first channel by displacing the actuating rod of the actuator by a second actuation distance relative to the second channel. Thereby, machining statuses of the lathe center are integrated for convenient operation, and the lathe center is driven and displaced in the channel to facilitate replacement.

What is claimed is: 
     
         1 . A workpiece spindle comprising:
 a spindle, the spindle having a front end and a rear end opposite to the front end, the front end of the spindle being formed with a first channel inwardly, a second channel connected to the first channel being formed inwardly from a side between the front end and the rear end of the spindle, the first channel of the spindle being assembled with a lathe center, and an end portion of the lathe center corresponding to the second channel of the spindle;   a spindle motor, the spindle motor being connected to the rear end of the spindle, the spindle being driven by the spindle motor to rotate; and   an actuator, the actuator being provided with an actuating rod, the actuating rod being disposed outside the spindle corresponding to the second channel of the spindle, and the actuating rod being displaced in the second channel relative to the second channel of the spindle to optionally limit the spindle or drive the lathe center.   
     
     
         2 . The workpiece spindle as claimed in  claim 1 , wherein the actuating rod displaces by a first actuation distance relative to the second channel of the spindle to limit rotation of the spindle, and the actuating rod displaces by a second actuation distance relative to the second channel of the spindle to drive the lathe center to displace in the first channel. 
     
     
         3 . The workpiece spindle as claimed in  claim 2 , wherein the lathe center has a first working end and a second working end connected to the first working end, an end portion of the first working end of the lathe center is disposed outside the first channel of the spindle, an end portion of the second working end of the lathe center is disposed in the first channel of the spindle, and the end portion of the second working end corresponds to the second channel. 
     
     
         4 . The workpiece spindle as claimed in  claim 1 , wherein the spindle motor further has a power source and a drive shaft driven by the power source, the spindle motor is connected to the rear end of the spindle by the drive shaft, and an encoder is further assembled between the drive shaft of the spindle motor and the spindle. 
     
     
         5 . The workpiece spindle as claimed in  claim 3 , wherein the actuating rod further has an identification part, a driving part connected with the identification part, and an actuating part connected with the driving part, the driving part is disposed between the identification part and the actuating part, the actuating rod is further provided with a sensor on one side of the identification part, the sensor defines a first position, a second position and a third position according to a sensing source, the second position is located between the first position and the third position, the driving part of the actuating rod is driven, the identification part of the actuating rod displaces from the first position to the second position to define the first actuation distance, and the identification part of the actuating rod displaces from the second position to the third position to define the second actuation distance. 
     
     
         6 . The workpiece spindle as claimed in  claim 5 , wherein the identification part is further assembled with an identification ring, the identification ring of the identification part of the actuating rod is located at the first position, the actuating part of the actuating rod is located outside the spindle, the spindle is driven by the spindle motor to rotate, and the lathe center rotates with the spindle. 
     
     
         7 . The workpiece spindle as claimed in  claim 5 , wherein the identification part is further assembled with an identification ring, the identification ring of the identification part of the actuating rod displaces from the first position to the second position to define the first actuation distance, an end portion of the actuating part of the actuating rod is inserted into the second channel of the spindle to limit the spindle, the spindle is restricted from rotating by the actuating rod, and the lathe center cannot rotate with the spindle. 
     
     
         8 . The workpiece spindle as claimed in  claim 5 , wherein the identification part is further assembled with an identification ring, the identification ring of the identification part of the actuating rod displaces from the second position to the third position to define the second actuation distance, the spindle is still restricted from rotating by the actuating rod, the end portion of the actuating part of the actuating rod butts against the end portion of the second working end of the lathe center to drive the lathe center, causing the end portion of the first working end of the lathe center to displace toward an outer side of the spindle by a working distance, either an arcuate surface or an inclined surface is respectively formed at a position where the end portion of the actuating part of the actuating rod butting against the end portion of the second working end of the lathe center. 
     
     
         9 . The workpiece spindle as claimed in  claim 5 , wherein the actuating rod is further provided with an actuating cylinder on a peripheral side of the driving part, the actuating rod is inserted relative to the actuating cylinder, the driving part is further assembled with a driving ring, the driving ring of the driving part is disposed in the actuating cylinder, the actuating cylinder cooperates with a power source to drive the driving ring of the driving part to enable the actuating rod to displace in the actuating cylinder, the actuating cylinder further cooperates with a solenoid valve, the solenoid valve is a five-port, three-position solenoid valve, the power source is distributed and supplied to the actuating cylinder through the solenoid valve, so that the driving ring of the driving part is driven by the distributed power source to drive the identification ring of the identification part to displace between the first position, the second position and the third position corresponding to the sensor. 
     
     
         10 . The workpiece spindle as claimed in  claim 1 , wherein the workpiece spindle further comprises a turntable, the turntable is rotatably assembled at the front end of the spindle, the turntable is assembled with a turn member on an end face, a turntable motor is assembled on one side of the turntable, and the turntable motor is connected to the turntable through a transmission member.