Facing accessory for a portable boring apparatus

Abstract

There is described a facing accessory for a portable boring apparatus, the accessory comprising: a shaft mounting portion for mounting to a longitudinal shaft of the portable boring apparatus extending along a longitudinal axis; a tool holder secured to the shaft mounting portion and adapted to receive a facing tool thereon, the tool holder comprising at least a telescopic arm for enabling movement of the facing tool towards and away from the shaft mounting portion along a radial axis relative to the longitudinal shaft; and an actuator operatively connected to the second section of the telescopic section for translating the second section relative to the first section along the radial axis.

1 .- 17 . (canceled) 
     
     
         18 . A facing accessory for a portable boring apparatus, the accessory comprising:
 a shaft mounting portion for mounting to a longitudinal shaft of the portable boring apparatus;   a tool holder secured to the shaft mounting portion and adapted to receive a facing tool thereon, the tool holder comprising a translation stage for translating the facing tool towards and away from the shaft mounting portion along a radial axis relative to the longitudinal shaft;   an actuator operatively connected to the translation stage for translating the facing tool along the radial axis;   a wireless communication unit for receiving a command from a remote controller; and   a control unit operatively connected to the wireless communication unit and the actuator, and configured to control the actuator according to the received command, the actuator, the wireless communication unit and the control unit being connectable to an internal power source.   
     
     
         19 . The facing accessory of  claim 18 , wherein the shaft mounting portion comprises a first jaw member secured to the tool holder and having a first inner recess for receiving the longitudinal shaft, and a second jaw member having a second inner recess for receiving the longitudinal shaft, the first and second jaw members being securable together around the longitudinal shaft, and the first and second inner recesses forming together a shaft receiving recess sized and shaped to fit snuggly around the longitudinal shaft when the first and second jaw members are secured together. 
     
     
         20 . The facing accessory of  claim 19 , wherein the first and second jaw members are hingeably secured together. 
     
     
         21 . The facing accessory of  claim 20 , further comprising a double hinge for hingeably securing the first and second jaw members together. 
     
     
         22 . The facing accessory of  claim 21 , wherein the second jaw member comprises an internal chamber and a cover for closing the internal chamber, the internal chamber being sized and shaped for receiving the wireless communication unit, the control unit, and the internal power source. 
     
     
         23 . The facing accessory of  claim 22 , wherein the wireless telecommunication unit and the control unit are secured to an internal wall of the internal chamber and the cover comprises securing means for having the internal power source secured thereto. 
     
     
         24 . The facing accessory of  claim 23 , further comprising at least a first electrical wire having one end connected to the control unit and extending from the control unit to the first jaw member through the double hinge. 
     
     
         25 . The facing accessory of  claim 24 , wherein the actuator is secured to an actuator receiving face of the first jaw member. 
     
     
         26 . The facing accessory of  claim 25 , further comprising a first electrical connector secured to the actuator receiving face of the first jaw member and electrically connected to the at least a first electrical wire, and a second electrical connector secured to the actuator, the first and second electrical connectors being electrically connected together when the actuator is secured to the actuator receiving face of the first jaw member in order to electrically connect the control unit to the actuator. 
     
     
         27 . The facing accessory of  claim 18 , wherein the tool holder comprises a telescopic arm for enabling movement of the facing tool towards and away from the shaft mounting portion along the radial axis, the telescopic arm comprising at least:
 a first section secured to the shaft mounting portion and extending radially away from the shaft mounting portion; and   a second section extending along the radial axis and slidably connected to the first section to allow a translation of the second section relative to the first section along the radial axis, the facing tool being securable to the second section.   
     
     
         28 . The facing accessory of  claim 27 , wherein the actuator comprises a drive assembly, a transmission assembly operatively connected to the drive assembly, and a screw shaft, the second section of the telescopic arm comprising a threaded opening on a side facing the shaft mounting portion, a first end of the screw shaft being operatively connected to the transmission assembly and a second end of the screw shaft being threadingly engaged in the threaded opening. 
     
     
         29 . The facing accessory of  claim 28 , wherein the drive assembly comprises a motor and a drive gear operatively connected to the motor so that activation of the motor triggers rotation of the drive gear. 
     
     
         30 . The facing accessory of  claim 29 , wherein the transmission assembly comprises a gear box operatively connected to the drive gear, the gear box comprising at least one driven gear and the first end of the screw shaft being secured to one of the at least one driven gear so that a rotation of the drive gear drives a rotation of the screw shaft, and thereby a translation of the second section along the radial axis. 
     
     
         31 . The facing accessory of  claim 27 , wherein the telescopic arm further comprises a third section slidably secured to the first and second sections between the first and second sections so that a translation of the second section drives a translation of the third section along the radial axis. 
     
     
         32 . The facing accessory of  claim 31 , wherein the first section comprises a first guide recess and the third section comprises a first protrusion slidably engaged within the first recess, and the second section comprises a second guide recess and the third section comprises a second protrusion slidably engaged within the second recess. 
     
     
         33 . The facing accessory of  claim 32 , wherein the first section further comprises a first rack groove extending from the first recess along the radial axis and a first guide rack inserted within the first rack groove, the second section comprises a second rack groove extending from the second recess along the radial axis and a second guide rack inserted within the second rack groove, and the third section comprises an aperture extending therethrough along the longitudinal axis and a synchronization gear rotatably secured within the aperture, the synchronization gear being operatively connected to the first and second guide racks to control an extension of the second and third sections. 
     
     
         34 . The facing accessory of  claim 33 , wherein the third section comprises a first guide groove adjacent to the first protrusion and the first section comprises a first tenon projecting therefrom and slidably engaged within the first guide groove, and the third section comprises a second guide groove adjacent to the second protrusion and the second section comprises a second tenon projecting therefrom and slidably engaged within the second guide groove, the first and second guide groove each having a predefined length for limiting a translation of the third section relative to the first section and a translation of the second section relative to the second section, respectively.