Patent Application
20080219792
The present invention is related to a measuring method, and more particularly to a method for correcting a tool gripper.
Currently, high precision metal processing procedure, such as drilling, reaming, boring, milling, cutting internal and external diameters, or surface polishing, always employs the CNC (Computer Numerical Control) processing machine to cooperate with multiple cutting tools or other tools. Generally, the cutting tool or tool may have a long steam structure, which is used for connecting to a driving shaft of the CNC processing machine via a gripper or gripping structure, and as the driving shaft proceeds a high speed turning, the cutting tool or tool gripped by the gripper can be driven to process the target object.
The conventional gripper 1, as shown in
A conventional tool gripping structure disclosed in U.S. patent application Ser. No. 11/450,579 includes a gripping component mounted on an assembling portion of a machine for fixing a tool, wherein the gripping component has a connecting backbone for connecting to the assembling portion and the bottom portion of the connecting backbone has an engaging portion whose outer diameter is larger than that of the connecting backbone, characterized in that a sleeve ring is mounted between the engaging portion and the surface of the assembling portion and the sleeve ring is tightly matched to the engaging portion and the assembling portion. In this embodiment, the sleeve ring fills up the interval between the gripper and the driving shaft so as to avoid the gripper from vibration as turning in high speed. However, different sleeve rings may have different intervals with the driving shaft, so that if only one single standard of sleeve ring is employed, then the problem that the vibrations from different grippers can not be totally solved still exists.
The object of the present invention is to prevent the vibration caused from the gripper being not tightly matched with the driving shaft of the machine from influencing the precision of the processing tool or tool when a high-speed turning processing is proceeded.
For achieving the object, the present invention provides a method for correcting a tool gripper so as to stabilize a connection between the tool gripper and a driving shaft on a processing machine. Firstly, an origin is positioned, and a distance between the bottom of the tool gripper and the bottom of the driving shaft is measured. Then, a standard length from the bottom of the tool gripper to the top of the rejecting portion is subtracted from the distance between the bottom of the tool gripper and the bottom of the driving shaft for obtaining the distance of an interval between the bottom of the driving shaft and the top of the rejecting portion. Finally, a sleeve ring, which conforms to the distance between the bottom of the driving shaft and the top of the rejecting portion, is mounted at the interval between the driving shaft and the rejecting portion. For fixing the sleeve ring, the sleeve ring can be adhered to the rejecting portion, or the rejecting portion can have a screw hole and the sleeve ring has a through hole at the position corresponding to the screw hole, so that the sleeve ring can be fixed on the rejecting portion through penetrating a bolt through the through hole and then screwing thereof in the screw hole. The method for correcting the tool gripper according to the present invention is easy to operate and can accurately conform to the corrections of tool grippers in different standards, and without additionally buying other expensive measuring instruments, the distance of the interval between the driving shaft and the rejecting portion can be precisely measured. Furthermore, the sleeve ring also can be processed or selected to have a proper dimension for conforming to the demands of different thicknesses without destroying the structure of the driving shaft or the tool gripper.
The foregoing aspects and many of the attendant advantages of this invention will be more readily appreciated as the same becomes better understood by reference to the following detailed description, when taken in conjunction with the accompanying drawings, wherein:
Please refer to
Since the interval between the bottom of the driving shaft 20 and the top of the rejecting portion 11 may cause a vibration of the tool gripper 10 when the driving shaft 20 of the machine proceeds a high speed turning, for solving this problem, in step 104 of the method for correcting the tool gripper according to the present invention, a sleeve ring 12 is mounted at the interval between the driving shaft 20 and the rejecting portion 11, as shown in
For stably positioning the sleeve ring 12 on the tool gripper 10, the sleeve ring 12 can be adhered to the rejecting portion 11, or as shown in
The method for correcting tool gripper according to the present invention is to, firstly, measure the distance between the top of the rejecting portion 11 and the bottom of the driving shaft 20, and then, to sleeve a sleeve ring 12, which conforms to the distance, between the rejecting portion 11 and the driving shaft 20 so as to tightly match the rejecting portion 11, the sleeve ring 12 and the driving shaft 20. Therefore, the vibration of the tool gripper caused from the interval between the top of the rejecting portion 11 of the tool gripper 10 and the bottom of the driving shaft 20 when the processing machine proceeds a high speed turning processing can be solved.
It is to be understood, however, that even though numerous characteristics and advantages of the present invention have been set forth in the foregoing description, together with details of the structure and function of the invention, the disclosure is illustrative only, and changes may be made in detail, especially in matters of shape, size, and arrangement of parts within the principles of the invention to the full extent indicated by the broad general meaning of the terms in which the appended claims are expressed.
