Patent Application
20150183079
1. Field of the Invention
The present invention relates generally to a polishing machine and more particularly, to a cylinder-type polishing machine that can enhance the uniformity of a polished surface of a workpiece.
2. Description of the Related Art
Before electroplating or painting a workpiece, a worker will polish the workpiece to reduce surface roughness and create a smooth and shiny surface for preventing defects on the painted surface of the workpiece.
In the conventional polishing process, the worker holds the workpiece in one hand and moves it to a polishing wheel for smoothing, and further, the worker may properly rotate the workpiece to ensure that the entire surface of the workpiece will be completely polished and smoothed. However, it takes a lot of effort and time to complete the manual polishing operation, and meanwhile it is difficult for the worker to apply a steady rotating force to the workpiece, resulting in reduction of the uniformity and accuracy of the polished surface of the workpiece.
Therefore, it is desirable to provide a polishing machine that eliminates the aforesaid drawbacks.
It is one objective of the present invention to provide a cylinder-type polishing machine, which can raise operational efficiency and enhance machining accuracy.
To achieve this objective of the present invention, the polishing machine comprises a machine body, a carrier, a polishing device, and a rotary drive device. The machine body includes a lower base, an upper base mounted on the lower base, and two parallel first guide rods attached to the lower base. The carrier is coupled to the first guide rods of the machine body so as to be movable relative to the machine body in a longitudinal direction. The polishing device includes a movable base disposed between the upper and lower bases of the machine body, a plurality of polishing cylinders rotatably connected to the movable base and located above the carrier, and two parallel second guide rods attached to the movable base in such a way that the second guide rods extend in a direction vertical to the first guide rods and are movably inserted into the first guide blocks of the upper base of the machine body respectively, such that the movable base is moveable relative to the machine body in a transverse direction. Further, the rotary drive device includes a plurality of transmission gears each coupled to one end of one of the polishing cylinders, and two rotary drive motors symmetrically mounted to the movable base and each having a gear shaft for driving the transmission gears located at a same side of the movable base to rotate through at least one transmission belt.
By this way, the entire surface of a workpiece can be smoothed automatically by the polishing cylinders through the longitudinal movement of the carrier and the transverse movement of the movable base, thereby raising operational efficiency and enhancing the machining accuracy of the workpiece.
Further scope of applicability of the present invention will become apparent from the detailed description given hereinafter. However, it should be understood that the detailed description and specific examples, while indicating preferred embodiments of the invention, are given by way of illustration only, since various changes and modifications within the spirit and scope of the invention will become apparent to those skilled in the art from this detailed description.
The present invention will become more fully understood from the detailed description given herein below and the accompanying drawings which are given by way of illustration only, and thus are not limitative of the present invention, and wherein:
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In order to drive the carrier 30 to move longitudinally, a longitudinal drive device 60 is provided by the polishing machine 10 of the present invention. As shown in
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In order to drive the movable base 41 to move transversely, as shown in
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After placing workpieces on the carrier 30, a worker starts the longitudinal drive motor 61 to drive the carrier 30 to move along the two first guide rods 23 to the bottom of the polishing cylinders 42, and then starts the rotary drive motor 53 to drive the rotation of the polishing cylinders 42 for smoothing the surfaces of the workpieces in a longitudinal direction. Thereafter, the worker can start the transverse drive motor 71 according to actual needs to drive the movable base 41 to move transversely relative to the carrier 30 for enabling the polishing cylinders 42 to smooth the surfaces of the workpieces in a transverse direction. After the polishing process is complete, the worker reverses the longitudinal drive motor 61 to drive the carrier 30 to leave the bottom of the polishing cylinders 42, and thus the worker can take the workpieces out of the carrier 30.
To deserve to be mentioned, the polishing machine 10 can be provided with two carriers 30 and two longitudinal drive devices 60. When one batch of the workpieces are polished, the second carrier 30 can be driven by the second longitudinal drive device 60 to carry the next batch of the workpieces to the polishing cylinders 42 for polishing. Besides, the number and arrangement of the transmission gears 51, the idle gears 52, and the transmission belts 54 and 55 can be changeable as long as the gear shaft 532 of each of the rotary drive motors 53 and the transmission gears 51 can be rotated synchronously through at least one transmission belt 54 or 55.
In conclusion, the polishing machine 10 of the present invention is operated automatically to enable the worker to save time and labor, thereby raising operational efficiency. In the meanwhile, the entire surface of the workpiece can be smoothed by the polishing cylinders 42 through the longitudinal movement of the carrier 30 and the transverse movement of the movable base 41, such that the machining accuracy of the workpiece can be enhanced.
The invention being thus described, it will be obvious that the same may be varied in many ways. Such variations are not to be regarded as a departure from the spirit and scope of the invention, and all such modifications as would be obvious to one skilled in the art are intended to be included within the scope of the following claims.
