Five-axis numerical control polishing machine for polishing watch bezels

Abstract

The invention relates to a five-axis numerical control polishing machine for polishing watch bezels, and belongs to the technical field of polishing machines. Comprising a five-axis machine table, a polishing mechanism and a workbench, the five-axis machine table is composed of an X linear axis, a Y linear axis, a Z linear axis, an A rotating axis and a B rotating axis, the X axis is slidably connected to the sliding end of the Y axis, the A axis is installed at the sliding end of the X axis, the workbench is installed at the rotating end of the A axis, the B axis is rotatably connected to the sliding end of the Z axis, and the polishing mechanism is installed at the rotating end of the B axis. A product is installed on the workbench, the shaft B rotates to enable the polishing end of the polishing mechanism to be obliquely arranged and abut against the polishing face of the product, and the problem that powder and metal chippings generated in the polishing process of an existing polishing machine can affect the follow-up polishing effect is solved.

Description

Technical Field

[0001] The invention belongs to the technical field of polishing machines, and in particular relates to a five-axis numerically controlled polishing machine for polishing a bezel. Background Art

[0002] Polishing machines are specially designed for surface treatment of metal products such as steel, aluminum and copper. They can quickly repair deep scratches and minor scrapes, quickly grind and polish welds, water outlet marks, traces of oxide film, stains and paint, etc. It is suitable for deburring, forming fillets, and decorative metal processing. During the processing, no shadows, transition zones and uneven decorative surfaces will be formed. It is an important equipment for metal product production lines.

[0003] During the polishing process, the product needs to be kept fixed under the clamping mechanism, so that the polishing machine can only process one angle of the product. If other angles are to be processed, the clamping position of the hardware needs to be readjusted, which reduces the processing efficiency of the product and affects the processing effect of the workpiece surface.

[0004] Moreover, the polishing machines currently on the market generally have grinding wheels, sanding belts, etc. that directly contact the polished workpiece. A lot of powder or a large amount of metal debris will fall during the polishing process, and these debris will generate static electricity under the action of friction, thereby being adsorbed or embedded on the grinding wheel and sanding belt. The accumulation of these debris and dust will reduce the polishing effect of the metal surface, and the accumulated debris and dust can easily cause serious scratches on the surface of the subsequent polished product. Summary of the invention

[0005] In order to solve the above problems existing in the prior art, the present invention provides a five-axis CNC polishing machine for polishing a bezel, which solves the problem that the powder and metal debris generated by the existing polishing machine during the polishing process will affect the subsequent polishing effect.

[0006] The purpose of the present invention can be achieved through the following technical solutions: A five-axis CNC polishing machine for polishing a bezel, comprising a five-axis machine, a polishing mechanism and a workbench, wherein the five-axis machine is composed of three linear axes, X, Y, and Z, and two rotating axes, A and B, wherein the X-axis is slidably connected to the sliding end of the Y-axis, the A-axis is mounted on the sliding end of the X-axis, the workbench is mounted on the rotating end of the A-axis, the B-axis is rotationally connected to the sliding end of the Z-axis, the polishing mechanism is mounted on the rotating end of the B-axis, the product is mounted on the workbench, and the B-axis rotates to make the polishing end of the polishing mechanism tilted and abut against the polishing surface of the product; The polishing mechanism includes a sand belt polishing assembly, a base, a brush and an electromagnetic cleaning assembly. The base is installed on the rotating end of the B axis, the sand belt polishing assembly is installed on the outer side wall of the base and the front end of the sand belt abuts against the product surface, the brush is installed at the rear end of the sand belt polishing assembly and abuts against the sand belt surface, and the electromagnetic cleaning assembly is installed at the rear end of the sand belt polishing assembly and removes dust on the sand belt.

[0007] As a preferred technical solution of the present invention, the belt polishing assembly includes a base, a driving wheel, a sanding belt, a pulley and an adjusting rod, the base is installed on the outer wall of the base, the driving wheel is installed on the top surface of the base, the pulley is slidably connected to the front end of the top surface of the base and the pulley is suspended outside the base, the sanding belt is an annular belt and is sleeved on the driving wheel and the outer wall of the pulley, and the adjusting rod is installed on the top surface of the base and is used to adjust the distance between the pulley and the driving wheel.

[0008] As a preferred technical solution of the present invention, the abrasive belt polishing assembly also includes two adjusting blocks, both of which are installed on the top surface of the base and located between the driving wheel and the pulley, and the two adjusting blocks are respectively abutted against the two opposite inner walls of the abrasive belt.

[0009] As a preferred technical solution of the present invention, the electromagnetic cleaning component includes two electrodes, both of which are installed on the side walls of the base, and an electromagnetic field is formed between the two electrodes to make the dust removed by the brush fall to the outside of the product.

[0010] As a preferred technical solution of the present invention, the base is in the shape of a cuboid, a plurality of polishing mechanisms are arranged on the same side wall of the base, a plurality of polishing mechanisms are arranged on the side walls of the base, and a plurality of fixed stations are arranged on the workbench corresponding to the plurality of polishing mechanisms.

[0011] As a preferred technical solution of the present invention, it also includes a protective shell and a collection bin, the protective shell cover is arranged on the outside of the five-axis machine, the collection bin is installed at the bottom of the tail end of the five-axis machine, and a drain trough is opened at the bottom of the five-axis machine, the drain trough is communicated with the collection bin, and the drain trough is located below the Y-axis.

[0012] As a preferred technical solution of the present invention, it also includes a detection mechanism, which is installed on the top surface of the protective shell. The detection mechanism is used to detect the polishing quality of the product. The polishing mechanism adjusts the polishing parameters according to the detection results of the detection mechanism.

[0013] As a preferred technical solution of the present invention, the detection mechanism is composed of a gloss meter or a surface roughness meter.

[0014] The beneficial effects of the present invention are as follows: an angle is formed between the polishing end and the polishing surface during polishing, and the inclination direction of the polishing end is the direction in which polishing has been completed, that is, the polishing mechanism will not cover the position where polishing has not been performed during polishing, and in the position where polishing has been completed, only the polishing end will contact the polishing surface, thereby avoiding dust or debris generated by polishing during the polishing process from falling on the unpolished area and affecting the subsequent polishing effect. At the same time, the polishing angle of the product during the polishing process is adjusted by the linkage of multiple axes of the five-axis machine, so that the surfaces of different angles and different curvatures on the product can be polished, thereby ensuring the polishing quality of the product, and solving the problem that the powder and metal debris generated by the existing polishing machine during the polishing process will affect the subsequent polishing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0016] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 This is a schematic diagram of the structure of the five-axis machine platform of the present invention; Figure 3 This is a schematic diagram of the structure of the abrasive belt polishing assembly of the present invention; Figure 4 It is a structural schematic diagram of the abrasive belt polishing assembly of the present invention from another perspective; Main component symbols In the figure: 1. Five-axis machine; 11. X-axis; 12. Y-axis; 13. Z-axis; 14. A-axis; 15. B-axis; 2. Polishing mechanism; 21. Abrasive belt polishing assembly; 211. Base; 212. Driving wheel; 213. Abrasive belt; 214. Pulley; 215. Adjusting rod; 216. Adjusting block; 22. Base; 23. Brush; 24. Electromagnetic cleaning assembly; 3. Workbench; 4. Protective shell; 5. Collection bin. DETAILED DESCRIPTION

[0017] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation methods, structures, features and effects of the present invention are described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0018] See also Figure 1-Figure 4The present embodiment provides a five-axis CNC polishing machine for polishing a bezel, comprising a five-axis machine 1, a polishing mechanism 2 and a workbench 3, wherein the five axes of the five-axis machine 1 are composed of three linear axes of X, Y and Z and two rotating axes of A and B, wherein the X-axis 11 is slidably connected to the sliding end of the Y-axis 12, the A-axis 14 is mounted on the sliding end of the X-axis 11, the workbench 3 is mounted on the rotating end of the A-axis 14, the B-axis 15 is rotatably connected to the sliding end of the Z-axis 13, and the polishing mechanism 2 is mounted on the rotating end of the B-axis 15. When polishing a product, the product is placed on the workbench 3 for fixing. Then, the three linear axes move to make the B axis 15 approach the product, and at the same time, the B axis 15 rotates to tilt the polishing end of the polishing mechanism 2, so that an angle is formed between the polishing end and the polishing surface during polishing, and the tilting direction of the polishing end is the direction of the completed polishing, that is, the polishing mechanism 2 does not cover the unpolished position during polishing, and is in the polished position, only the polishing end will contact the polishing surface, so as to avoid dust or debris generated by polishing during the polishing process falling on the unpolished area and affecting the subsequent polishing effect; The polishing mechanism 2 includes a sand belt polishing assembly 21, a base 22, a brush 23 and an electromagnetic cleaning assembly 24. The base 22 is installed at the rotating end of the B axis 15. The sand belt polishing assembly 21 is installed on the outer side wall of the base 22 and the front end of the sand belt 213 is in contact with the surface of the product. The brush 23 is installed at the rear end of the sand belt polishing assembly 21 and is in contact with the surface of the sand belt 213. The electromagnetic cleaning assembly 24 is installed at the rear end of the sand belt polishing assembly 21 and removes dust on the sand belt 213. Therefore, during the polishing process, the sand belt 213 of the sand belt polishing assembly 21 will contact the surface to be polished. Since the sand belt polishing assembly 21 is polished by continuously rotating the sand belt 213 during the polishing process, since the polishing mechanism 2 is inclined and the polishing mechanism 2 does not block the area that is not polished, the sand belt 213 is in contact with the surface of the product during the polishing process. The dust generated by polishing will be taken away from the polishing area by the continuously rotating sanding belt 213, and then when it comes into contact with the brush 23, the brush 23 will brush off the dust on the sanding belt 213. The dust brushed off by the brush 23 will only fall on the polished area due to the inclined setting of the polishing mechanism 2. At the same time, the electrostatic dust generated by friction during the polishing process will also be adsorbed by the electromagnetic removal component 24, thereby ensuring that the dust generated by polishing during the polishing process will not affect the polishing effect of the remaining polishing surfaces. In addition, the polishing angle of the product during the polishing process is adjusted by the linkage of multiple axes of the five-axis machine 1, so that the surfaces of different angles and curvatures on the product can be polished, thereby ensuring the polishing quality of the product, and solving the problem that the powder and metal debris generated by the existing polishing machine during the polishing process will affect the subsequent polishing effect.

[0019] In order to maintain sufficient tension of the abrasive belt 213 for polishing during polishing, in this embodiment, the abrasive belt polishing assembly 21 includes a base 211, a driving wheel 212, an abrasive belt 213, a pulley 214 and an adjusting rod 215. The base 211 is installed on the outer wall of the base 22, the driving wheel 212 is installed on the top surface of the base 211, the pulley 214 is slidably connected to the front end of the top surface of the base 211 and the pulley 214 is suspended outside the base 22, the abrasive belt 213 is an annular belt and is sleeved on the outer wall of the driving wheel 212 and the pulley 214, and the adjusting rod 215 is installed on the top surface of the base 211 and is used to adjust The distance between the pulley 214 and the driving wheel 212 is adjusted. During the polishing process, the driving wheel 212 rotates under the drive of the motor, driving the sanding belt 213 to move together. The surface of the sanding belt 213 rubs against the workpiece to be polished, thereby grinding and polishing. During the polishing process, the tightness of the sanding belt 213 will affect the stability and polishing effect of the sanding belt 213 during operation. Therefore, the position of the pulley 214 is adjusted by adjusting the rod 215 so that the sanding belt 213 can complete the operation smoothly and avoid slipping or falling off, thereby ensuring the uniformity and consistency of polishing.

[0020] In order to ensure that the sanding belt 213 can remain stable under high-speed operation and improve the polishing efficiency of the sanding belt 213, in one embodiment, the sanding belt polishing assembly 21 also includes two adjusting blocks 216, and the two adjusting blocks 216 are both installed on the top surface of the base 211 and are located between the driving wheel 212 and the pulley 214. The two adjusting blocks 216 are respectively abutted against the two opposite inner walls of the sanding belt 213. When the tension of the sanding belt 213 is preliminarily adjusted by the adjusting rod 215 to ensure that the sanding belt 213 does not slip or fall off during operation, if the sanding belt 213 is not sufficiently tensioned during polishing, this will result in poor polishing effect and reduced polishing efficiency. Therefore, it is necessary to increase the tension of the sanding belt 213 to improve the polishing effect of the sanding belt 213 and improve the polishing efficiency at the same time.

[0021] In order to reduce the impact of flying dust on the polishing quality, in one embodiment, the electromagnetic removal component 24 includes two electrodes, both of which are installed on the side wall of the base 211. An electromagnetic field is formed between the two electrodes to make the dust removed by the brush 23 fall to the outside of the product. During the polishing process, the brush 23 brushes off the dust on the sanding belt 213. Although the brush 23 is located in the polishing area, the dust may still fall into the unpolished area during the falling process, because the sanding belt 213 will abut against the brush 23 during continuous operation, causing the dust to splash around after colliding with the brush 23. Therefore, an electromagnetic field is formed by the two electrodes to constrain the direction of dust splashing, and the electrostatic adsorption of the electromagnetic field and the deflection of the electromagnetic field are used to guide the dust splashing direction, thereby reducing the situation where dust splashes into the unpolished area, thereby improving the polishing quality.

[0022] In order to improve the polishing efficiency of the product and thus reduce the production cost, in one embodiment, the base 22 is in the shape of a rectangular parallelepiped, and a plurality of polishing mechanisms 2 are provided on the same side wall of the base 22, and a plurality of polishing mechanisms 2 are provided on the side walls of the base 22, and a plurality of fixed stations are provided on the workbench 3 corresponding to the plurality of polishing mechanisms 2. By arranging a plurality of polishing mechanisms 2 on the four side walls of the base 22 and correspondingly arranging a plurality of fixed stations on the workbench 3, a plurality of products can be polished at one time during the polishing process. At the same time, when the sand belt 213 in a certain group of polishing mechanisms 2 reaches the number of times of use, another group of polishing mechanisms 2 can be directly replaced to continue polishing, thereby reducing the frequency of replacing the sand belt 213, thereby improving production efficiency and reducing production costs.

[0023] In order to avoid environmental pollution caused by flying dust during the polishing process and reduce pollution to the internal system of the equipment, in one embodiment, it also includes a protective shell 4 and a collecting bin 5. The protective shell 4 is covered on the outside of the five-axis machine 1, and the collecting bin 5 is installed at the bottom of the tail end of the five-axis machine 1. A drain chute is opened at the bottom of the five-axis machine 1, and the drain chute is communicated with the collecting bin 5. The drain chute is located below the Y-axis 12. The protective shell 4 is used to prevent dust from splashing during the polishing process to cause environmental pollution. At the same time, the dust is collected through the drain chute and the collecting bin 5 to reduce the accumulation of dust and the pollution to the internal system of the equipment.

[0024] At the same time, in order to minimize the splashing of dust during the polishing process, an exhaust fan is provided on the inner wall of the protective shell 4. The exhaust fan is used to blow the dust into the drain trough to prevent the dust from falling to other positions of the equipment and polluting the internal system of the equipment.

[0025] In order to ensure that the polishing quality of the product can remain consistent, in one embodiment, a detection mechanism is also included. The detection mechanism is installed on the top surface of the protective shell 4. The detection mechanism is used to detect the polishing quality of the product. The polishing mechanism 2 adjusts the polishing parameters according to the detection results of the detection mechanism. The polishing process is detected by the detection mechanism and the real-time feedback is given to the polishing system, so that the polishing mechanism 2 can adjust the polishing speed, pressure, feed amount of the sanding belt 213 and other polishing parameters according to the detection results of the detection mechanism to adjust the polishing quality, thereby ensuring the consistency and high quality of the product during the polishing process.

[0026] In order to accurately detect the polishing quality of the product so that the polishing mechanism 2 can be adjusted accordingly to ensure the consistency of the product polishing quality, in one embodiment, the detection mechanism is composed of a gloss meter or a surface roughness meter. The gloss meter can quantify the gloss by measuring the intensity of the surface reflected light, thereby detecting the polishing quality of the product. When the gloss meter detects that the gloss is lower than the standard, the system will feed back this data to the polishing mechanism 2, and automatically adjust the polishing parameters such as speed and pressure to improve the gloss. The surface roughness meter can provide highly accurate and fast roughness evaluation, which is particularly suitable for surfaces with complex shapes and small sizes. It can evaluate whether the surface of the polished product meets the smoothness requirements. Therefore, the gloss meter or surface roughness meter is used to adapt to different polishing quality requirements, thereby ensuring that the polishing effect of the product can reach the preset standard value.

[0027] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A five-axis CNC polishing machine for polishing a bezel, characterized in that: It includes a five-axis machine, a polishing mechanism and a workbench. The five-axis machine consists of three linear axes, X, Y and Z, and two rotating axes, A and B. The X axis is slidably connected to the sliding end of the Y axis, the A axis is installed on the sliding end of the X axis, the workbench is installed on the rotating end of the A axis, the B axis is rotationally connected to the sliding end of the Z axis, the polishing mechanism is installed on the rotating end of the B axis, the product is installed on the workbench, and the B axis rotates to make the polishing end of the polishing mechanism tilted and abut against the polishing surface of the product; The polishing mechanism includes a sand belt polishing assembly, a base, a brush and an electromagnetic cleaning assembly. The base is installed on the rotating end of the B axis, the sand belt polishing assembly is installed on the outer side wall of the base and the front end of the sand belt abuts against the product surface, the brush is installed at the rear end of the sand belt polishing assembly and abuts against the sand belt surface, and the electromagnetic cleaning assembly is installed at the rear end of the sand belt polishing assembly and removes dust on the sand belt.

2. A five-axis CNC polishing machine for polishing a bezel according to claim 1, characterized in that: The belt polishing assembly includes a base, a driving wheel, a sanding belt, a pulley and an adjusting rod, the base is installed on the outer wall of the base, the driving wheel is installed on the top surface of the base, the pulley is slidably connected to the front end of the top surface of the base and the pulley is suspended outside the base, the sanding belt is an annular belt and is sleeved on the driving wheel and the outer wall of the pulley, and the adjusting rod is installed on the top surface of the base and is used to adjust the distance between the pulley and the driving wheel.

3. A five-axis CNC polishing machine for polishing a bezel according to claim 2, characterized in that: The abrasive belt polishing assembly also includes two adjusting blocks, both of which are installed on the top surface of the base and located between the driving wheel and the pulley, and the two adjusting blocks are respectively in contact with two opposite inner side walls of the abrasive belt.

4. A five-axis CNC polishing machine for polishing a bezel according to claim 1, characterized in that: The electromagnetic cleaning component comprises two electrodes, both of which are mounted on the side wall of the base, and an electromagnetic field is formed between the two electrodes to make the dust removed by the brush float to the outside of the product.

5. A five-axis CNC polishing machine for polishing a bezel according to claim 1, characterized in that: The base is in the shape of a cuboid, a plurality of polishing mechanisms are arranged on the same side wall of the base, a plurality of polishing mechanisms are arranged on each side wall of the base, and a plurality of fixed stations are arranged on the workbench corresponding to the plurality of polishing mechanisms.

6. A five-axis CNC polishing machine for polishing a bezel according to claim 1, characterized in that: It also includes a protective shell and a collection bin, wherein the protective shell cover is arranged on the outside of the five-axis machine, and the collection bin is installed at the bottom of the tail end of the five-axis machine. A drain trough is opened at the bottom of the five-axis machine, and the drain trough is communicated with the collection bin, and the drain trough is located below the Y-axis.

7. A five-axis CNC polishing machine for polishing a bezel according to claim 6, characterized in that: It also includes a detection mechanism, which is installed on the top surface of the protective shell. The detection mechanism is used to detect the polishing quality of the product. The polishing mechanism adjusts the polishing parameters according to the detection results of the detection mechanism.

8. A five-axis CNC polishing machine for polishing a bezel according to claim 7, characterized in that: The detection mechanism is composed of a gloss meter or a surface roughness meter.

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