Patent Application
20100137116
1. Field of the Invention
The present invention relates to a quick positioning screw assembly for quick installation to fasten two plate members together and more particularly, to a quick-positioning screw assembly machining method for processing the relatively thinner front extension cap wall of the cap of the quick-positioning screw assembly into coupled with the mounting socket of the quick-positioning screw assembly.
2. Description of the Related Art
Fastening plate members in a stack is an application of stacking attachment technique to fully utilize the space. With respect to the functioning of the power drive or speed-adjustment unit of a machine tool, when the machine base failed or an adjustment of the speed of the machine is necessary, a movable plate member will be detachably mounted on the housing of the power drive or speed-adjustment unit. Screw bolts are commonly used to secure a movable plate member to a machine tool. When unfastening screw bolts to dismount a movable plate member from a machine tool, the associating lock nuts may fall from the screw bolts.
The aforesaid method of using the pressure tube C to process the front extension cap wall A1 of the cap A has drawbacks as follows:
The present invention has been accomplished under the circumstances in view. It is therefore the main object of the present invention to provide a quick-positioning screw assembly machining process, which uses a machine tool to process a relatively thinner front extension cap wall of a cap accurately and rapidly into contact with a periphery of a mounting socket so that the processed quick-positioning screw assembly can be quickly and stably fastened to plate members to secure the plate members firmly together.
According to one aspect of the present invention, the quick-positioning screw assembly machining method uses a chucking device of a machine tool to hold and rotate the quick-positioning screw assembly, and a ramming member to ram the relatively thinner front extension cap wall of the cap during rotation of the quick-positioning screw assembly, and therefore the relatively thinner front extension cap wall of the cap is bent radially inwards into contact with the periphery of the mounting socket between the two outside annular flanges of the mounting socket. Because the processed relatively thinner front extension cap wall of the cap is kept into contact with the periphery of the mounting socket, the screw can be moved with the cap relative to the mounting socket stably when the screw is driven into the plate members.
According to another aspect of the present invention, the cap comprises an inside annular flange adapted to support the screw, a locating groove extending around the inside wall thereof at the bottom side of the inside annular flange, and a retaining ring mounted in the locating groove for securing the top outside annular flange of the mounting socket. Therefore, the cap and the mounting socket are kept together during the process of processing the relatively thinner front extension cap wall of the cap. After the processing process, the cap can be pulled relative to the mounting socket to disconnect the engagement between the retaining ring and the top outside annular flange of the mounting socket for allowing the screw be moved with the cap relative to the mounting socket.
Referring to
As stated above, the invention uses the female chucking member 111 and the male chucking member 112 of the chucking device 11 of the machine tool 1 to hold the quick-positioning screw assembly 2 and to rotate it, and the ramming member 113 to ram the relatively thinner front extension cap wall 211 of the cap 21 during rotation of the quick-positioning screw assembly 2 with the chucking device 11 of the machine tool 1. Therefore, the relatively thinner front extension cap wall 211 of the cap 21 is bent radially inwards into contact with the periphery 221 of the mounting socket 22 between the two outside annular flanges 222. After the processing process, the mounting socket 22 and the cap 21 are coupled together to hold the elastic member 24 and the screw 23 on the inside, and the screw 23 can be rotated with the cap 21 and moved axially with the cap 21 relative to the mounting socket 22.
Referring to
During installation the quick-positioning screw assembly 2, insert the mounting socket 22 into a mounting through hole of a first plate member (not shown) to have the lower outside annular flange 222 of the mounting socket 22 be stopped at a solder paste on the top wall of the first plate member around the mounting through hole and then soldered to the first plate member by the solder paste by means of a soldering process. Thereafter, pull the cap 21 outwards with the hand to disengage the C-shaped retaining ring 224 from the upper outside annular flange 222 of the mounting socket 22 for allowing the cap 21 and the screw 23 be moved axially relative to the mounting socket 22, and then the screw 23 is forced with the cap 21 downwards and then rotated with the cap 21 and to thread the threaded shank 232 into a corresponding screw hole on a second plate member (not shown) to affix the second plate member and the first plate member together.
In general, the invention uses the female chucking member 111 and the male chucking member 112 of the chucking device 11 of the machine tool 1 to hold the quick-positioning screw assembly 2 and to rotate it, and the ramming member 113 to ram the relatively thinner front extension cap wall 211 of the cap 21 during rotation of the quick-positioning screw assembly 2 with the chucking device 11. Therefore, the relatively thinner front extension cap wall 211 of the cap 21 is bent radially inwards into contact with the periphery 221 of the mounting socket 22 between the two outside annular flanges 222 to secure the mounting socket 22 to the cap 21, allowing axial movement of the cap 21 relative to the mounting socket 22.
In conclusion, the quick-positioning screw assembly machining method of the present invention has the following features and advantages:
1. The invention uses the chucking device 11 of the machine tool 1 to hold and rotate the quick-positioning screw assembly 2, and the ramming member 113 of the machine tool 1 to ram the relatively thinner front extension cap wall 211 of the cap 21, and therefore the relatively thinner front extension cap wall 211 of the cap 21 is bent radially inwards into contact with the periphery 221 of the mounting socket 22 between the two outside annular flanges 222. After the processing process, the mounting socket 22 and the cap 21 are coupled together to hold the elastic member 24 and the screw 23 on the inside, and the screw 23 can be rotated with the cap 21 and moved axially with the cap 21 relative to the mounting socket 22.
2. The design of the outside annular flanges 222 of the mounting socket 22 enables the mounting socket 22 to be quickly and accurately bonded to a mounting through hole of a first plate member by means of an automatic mounting system.
3. The cap 21 has a locating groove 213 on the inside for the mounting of a C-shaped retaining ring 224 to secure the upper outside annular flange 222 of the mounting socket 22 to the bottom side of the inside annular flange 212 of the cap 21 so that the quick-positioning screw assembly 2 can be installed in plate members to fasten the plate members together by means of an automatic mounting system.
Although a particular embodiment of the invention has been described in detail for purposes of illustration, various modifications and enhancements may be made without departing from the spirit and scope of the invention. Accordingly, the invention is not to be limited except as by the appended claims.
