Patent Application
20130217311
1. Technical Field
The present disclosure relates to polishing apparatus, and particularly to an enclosed polishing apparatus.
2. Description of Related Art
During a machining process, workpieces are usually polished to obtain a high gloss. During a polishing process, fine dust from the workpiece may fall on a polished surface of the workpiece such that the gloss of the polished surface is affected, and fine dust also creates a dusty work environment. A final manual cleaning may be required to complete the polishing process.
Therefore, there is room for improvement in the art.
The components in the drawings are not necessarily drawn to scale, the emphasis instead placed upon clearly illustrating the principles of the present disclosure. Moreover, in the drawings, like reference numerals designate corresponding parts throughout the several views.
The housing 70 includes a bottom housing 71 and a top housing 73 matched with the bottom housing 71. The bottom housing 71 and the top housing 73 cooperatively form a substantially enclosed receiving space (not labeled). The bottom housing 71 includes a body portion 711 and an extension portion 713 extending from the body portion 711 away from the top housing 73. The body portion 711 is substantially rectangular. The extension portion 713 is substantially a funnel, and communicates with the receiving space, for connecting to an external air extractor. Thus, dust and powder waste produced during polishing is extracted out by the external air extractor. The top housing 73 is substantially rectangular. The top housing 73 is rotatably connected to the body portion 711 of the bottom housing 71. In other embodiments, shapes of the bottom housing 71 and the top housing 73 can be changed to suit the shape of the workpiece 200, as long as the receiving space defined by the bottom housing 71 and the top housing 73 is big enough to receive the workpiece 200.
In the illustrated embodiment, the fixing seat 10 is substantially rectangular and plate-like. The fixing seat 10 includes a positioning portion (not labeled). The positioning portion is matched with an inner wall of the workpiece 200, for securely fixing the workpiece 200. The fixing seat 10 is securely placed in the body portion 711 of bottom housing 71. A gap 101 is formed between a periphery of the fixing seat 10 and an inner sidewall of the body portion 711. The gap 101 communicates with the extension portion 713. The gap 101 serves as an exit for the dust and powder waste. During polishing, the dust and powder waste is extracted out through the gap 101 by the external air extractor.
Referring to
The mounting base 31 includes a main body 315, and a guiding portion 310. The main body 315 is substantially rectangular and plate-like. The matching member 33 is a substantially rectangular protrusion extending outward along a periphery of the main body 315. The guiding portion 310 is also a substantially rectangular protrusion extending outward from the main body 315 and separately along the matching member 33, for mounting the chain assembly 35. In the illustrated embodiment, the guiding portion 310 includes opposite first guiding portions 311 and opposite second guiding portions 313. Connecting corners of each of the first guiding portions 311 and each of the second guiding portions 313 are rounded.
The matching member 33 surrounds the guiding portion 310. A guiding groove 331 is formed between the matching member 33 and the guiding portion 310. The matching member 33 includes an inner sidewall 332 facing the guiding portion 310. A plurality of teeth 333 are defined in the inner sidewall 332. In other embodiments, a shape of the guiding groove 331 can be changed to suit the shape of a polishing area of the workpiece 200.
The chain assembly 35 runs around the guiding portion 310, in the guiding groove 331 opposite to the teeth 333. The chain assembly 35 and the teeth 333 cooperatively form a guiding rail (not labeled). In the illustrated embodiment, the chain assembly 35 includes two chain sections. In other embodiments, the chain assembly 35 can include other chain sections.
The pushing assembly 36 is placed on the mounting base 31, for applying pressure to the guiding portion 310. In the illustrated embodiment, the pushing assembly 36 is placed adjacent to one corner of the guiding portion 310. The pushing assembly 36 includes a pushing member 361 and a driving member 363 driving the pushing member 361. The pushing member 361 is movably placed between and resists against one of the first guiding portions 311 and one of the second guiding portions 313, such that the chain assembly 35 is held at the correct tension.
The driving assembly 37 is mounted on the mounting base 31, for driving the chain assembly 35 to run within the guiding groove 331. In the illustrated embodiment, the driving assembly 37 includes a driving member 371, an action wheel 373, a driven wheel 375, and a driving gear 377. The driving member 371 is placed on the mounting base 31 away from the pushing assembly 36. The action wheel 373 is connected to and driven by the driving member 371. The driven wheel 375 is meshed with the action wheel 373, and is non-rotatably and coaxially connected to the driving gear 377. The driving gear 377 is slidably placed on the mounting base 31. The driving gear 377 meshes with the chain assembly 35, such that the chain assembly 35 is driven to circulate by the driving assembly 37.
The adjustment assembly 39 is mounted on an edge of the mounting base 31 opposite to the driving assembly 37, for adjusting the meshing between the chain assembly 35 and the driving gear 377. The adjustment assembly 39 includes a pressing plate 391, an adjusting member 393, and a driving member 395. The pressing plate 391 includes a main body 3911, a receiving portion 3913, and a fixing portion 3915. The main body 3911 is placed on the matching member 33. The receiving portion 3913 extends from two ends of the main body 3911 above the chain assembly 35. The fixing portion 3915 extends from the receiving portion 3913 away from the main body 3911. The fixing portion 3915 is securely placed on the guiding portion 310. The adjusting member 393 is movably mounted on the main body 3911. The adjusting member 393 resists against the chain assembly 35, so that the driving gear 377 is constantly meshed with the chain assembly 35. The driving member 395 is connected to the adjusting member 393, for driving the adjusting member 393.
Referring to
In assembly, firstly, the chain assembly 35 and the matching member 33 are movably mounted on the mounting base 31, and the pushing assembly 36 is movably mounted on one corner of the chain assembly 35 between one of the first guiding portions 311 and one of the second guiding portions 313. Secondly, the driving assembly 37 is mounted on the mounting base 31, and is meshed with the chain assembly 35. Thirdly, the polishing mechanism 50 is mounted on the mounting base 31, the polishing member is opposite to the fixing seat 10, and the engaging gear 55 is movably engaged in the guiding groove 331. Fourthly, the adjustment assembly 39 is mounted on the edge of the mounting base 31 opposite to the driving assembly 37. Fifthly, the mounting base 31 is securely mounted in the top housing 73, and the fixing seat 10 is securely placed in the bottom housing 71. Finally, the bottom housing 71 is rotatably connected to the top housing 73 to complete the assembly of the enclosed polishing apparatus 100.
In usage, firstly, the workpiece 200 is securely fixed on the fixing seat 10, and the housing 70 is closed. Secondly, the driving assembly 37 is started to drive the chain assembly 35, the chain assembly 35 then moves along the guiding portion 310, and thereby the engaging gear 55 of the polishing mechanism 50 is moved by the chain assembly 35. The polishing member 51 is moved along by the engaging gear 55, and an edge of the workpiece 200 is thus polished by the polishing member 51. The dust and powder waste produced during polishing is extracted out through the gap 101 by the external air extractor.
The housing 70 is closed during polishing, and the dust and powder waste is extracted out through the gap 101 by the external air extractor, such that the dust and powder waste is not allowed to fall on a surface of the workpiece 200 and so contaminate it, and a work environment is also kept cleaner.
While various embodiments have been described and illustrated, the disclosure is not to be construed as being restricted thereto. Various modifications can be made to the embodiments by those skilled in the art without departing from the true spirit and scope of the disclosure as defined by the appended claims.
| Number | Date | Country | Kind |
|---|---|---|---|
| 201210037713.6 | Feb 2012 | CN | national |
