Saw blade clamping device and the operation method thereof

Abstract

A saw blade clamping device has a first clamping device for clamping a first working element and a second clamping device for clamping a second clamping element, wherein the first clamping device and the second clamping device are parallel to each other and mounted to a transmission controlling mechanism. The two clamping devices can be controlled by the transmission control mechanism to can not only clamp a single saw blade but to allow for replacement of the single saw blade by double saw blades without changing the clamping system, which enables the replacement of the saw blade to be more convenient and quick.

What is claimed is: 
     
         1 . A saw blade clamping device, comprising:
 a first clamping device and a second clamping device, the first clamping device and the second clamping device being parallel with each other and mounted to a transmission control mechanism for converting a rotational motion of a motor to a reciprocating motion;   wherein either of the first clamping device and the second clamping device is used for clamping a first working element and the first clamping device and the second clamping device are jointly used for clamping a second working element different from the first working element.   
     
     
         2 . The saw blade clamping device according to  claim 1 , wherein the first working element has an engagement portion for engaging with either of the first clamping device and the second clamping device and the second working element has two engagement portions for engaging with the first clamping device and the second clamping device respectively. 
     
     
         3 . The saw blade clamping device according to  claim 1 , wherein the first working element comprises an L-shaped handle portion having a projection formed toward the motor along the longitudinal axis of a housing. 
     
     
         4 . The saw blade clamping device according to  claim 1 , wherein the first working element comprises a U-shaped handle portion having a groove formed away from the motor along the longitudinal axis of a housing. 
     
     
         5 . The saw blade clamping device according to  claim 1 , wherein the first working element comprises a T-shaped handle portion having a first edge and a second edge each of which has a convex portion formed in a direction vertical to the longitudinal axis of the housing. 
     
     
         6 . The saw blade clamping device according to  claim 1 , wherein the transmission controlling mechanism comprises a sun gear mounted to an output shaft of the motor, a planet gear engaged with the sun gear, an inner gear ring engaged with the planet gear, a planet carrier engaged with the planet gear, a rotating shaft connected to the planet carrier, a cam shaft mounted to the outer circumference of the rotating shaft and connected to the rotating shaft via an arresting pin, and a first sliding rod component and a second sliding rod component mounted to two cam portions of the cam shaft respectively, wherein the first clamping device and the second clamping device are mounted to the first sliding rod component and the second sliding rod component respectively. 
     
     
         7 . The saw blade clamping device according to  claim 6 , wherein the rotating shaft is mounted within a gearbox by a first oil-retaining bearing and a second oil-retaining bearing. 
     
     
         8 . The saw blade clamping device according to  claim 6 , wherein a second sliding rod is mounted within a gearbox by a first sliding bearing and a second sliding bearing, and a first sliding rod is mounted within the gearbox by a third sliding bearing and a fourth sliding bearing. 
     
     
         9 . The saw blade clamping device according to  claim 6 , wherein a first roller is connected to a second sliding rod by a first roller pin and a second roller is connected to the second sliding rod by a second roller pin and the first roller and the second roller are clamped to the cam portions in a pair and wherein a third roller is connected to a first sliding rod by a third roller pin and a fourth roller is connected to the first sliding rod by a fourth roller pin and the third roller and the fourth roller are clamped to the cam portions in a pair. 
     
     
         10 . The saw blade clamping device according to  claim 6 , wherein the clamping device comprises a clamping device body having a long groove for accommodating a saw blade formed therein wherein a portion of the saw blade extending into the long groove is formed with a locating hole and a cylindrical groove extending along a direction vertical to the locating hole for accommodating a steel ball, and wherein a pressing plate is mounted within the clamping device body with the pressing plate having a concave portion for accommodating the steel ball and a slanting surface at a lower end of the concave portion. 
     
     
         11 . The saw blade clamping device according to  claim 10 , wherein the pressing plate is connected to a releasing button. 
     
     
         12 . The saw blade clamping device according to  claim 10 , wherein the pressing plate is provided with a pressing spring at the bottom thereof. 
     
     
         13 . A method of operating a saw blade clamping device, comprising:
 pressing a releasing button and inserting a first working element into either of a first clamping device or a second clamping device;   releasing the releasing button so that an engagement portion of the first working element is engaged with the first clamping device or the second clamping device;   starting a motor to enable a transmission controlling mechanism to convert a rotational motion of the motor into a reciprocating motion of the first working element;   stopping the motor, pressing down the releasing button, removing the first working element and inserting a second working element different from the first working element into the first clamping device and the second clamping device;   releasing the releasing button so that two engagement portions of the second element are engaged with the first clamping device and the second clamping device respectively; and   starting the motor to enable the transmission controlling mechanism to convert the rotational motion of the motor into the reciprocating motion of the second working element.