Automatic titanium metal watch case polishing method

Abstract

The invention relates to the technical field of machining and surface treatment, in particular to an automatic titanium metal watch case polishing method. According to the method, a five-axis linkage polishing device and a special jig are adopted, and efficient and stable polishing machining is achieved. The method comprises the specific steps of laser etching treatment, rough polishing treatment, ear end rough polishing, side edge fine polishing, ear end fine polishing, wire drawing treatment, ear face rough polishing, C angle rough polishing, ear face fine polishing, C angle fine polishing, cleaning and detection. By accurately controlling polishing parameters and paths, the consistency of polishing quality and the yield are remarkably improved, the production cost and the labor cost are reduced, the labor intensity of workers is reduced, and the operation environment is improved. The method adapts to the polishing requirement for the complex shape of the titanium metal watch case, the defective rate is reduced, many problems in the prior art can be effectively solved, the requirement for large-scale production is met, and wide application prospects are achieved.

Description

Technical Field

[0001] This invention relates to the field of machining, and in particular to an automated method for polishing titanium watch cases. Background Technology

[0002] In the fields of machining and surface treatment technology, polishing of titanium alloy watch cases is a crucial process. Titanium alloys are widely used in watch case manufacturing due to their excellent properties such as high strength, low density, and corrosion resistance. However, the high hardness and toughness of titanium alloys make polishing extremely difficult. Traditional polishing processes mainly rely on manual operation, which is not only inefficient but also makes it difficult to guarantee consistent polishing quality and a high yield rate due to the instability of manual operation.

[0003] In existing technologies, the polishing of titanium alloy watch cases is typically done manually. While this method can achieve a certain polishing effect, the instability of manual operation makes it difficult to guarantee the consistency of polishing quality and the yield rate. Furthermore, manual polishing is costly, involves high labor intensity for workers, and operates in poor conditions, making it unsuitable for large-scale production.

[0004] Therefore, existing polishing techniques for titanium alloy watch cases have many problems in practical applications, and there is an urgent need for a new, more efficient, and more stable polishing method to improve the consistency and yield of product polishing quality, reduce costs, reduce the labor intensity of workers, and meet the needs of large-scale production.

[0005] This invention provides an automated method for polishing titanium watch cases. By employing a five-axis linkage polishing device and specialized fixtures, a highly efficient and stable polishing process is achieved. This method not only improves the consistency of polishing quality and yield rate but also reduces labor costs and labor intensity, improves the operating environment, and meets the needs of large-scale production. Summary of the Invention

[0006] The present invention aims to provide an automated polishing method for titanium watch cases to solve the problems of poor polishing quality consistency, low efficiency, high cost, and high labor intensity in the existing technology.

[0007] To achieve the above objectives, this invention provides an automated method for polishing titanium watch cases, aiming to solve the problems of poor polishing quality consistency, low efficiency, high cost, and high labor intensity in existing technologies. This method achieves a highly efficient and stable polishing process by employing a five-axis linkage polishing device and a dedicated fixture. Specifically, the method includes mounting a watch case sample on a dedicated fixture, which is fixed to the C-axis by bolts. Polishing sandpaper is adhered and fixed to a polishing disc, which is driven by a servo motor. During processing, the polishing wheel and the sample rotate around their respective axes, and a surface treatment agent is sprayed through nozzles onto the contact area between the polishing sandpaper and the product to be polished.

[0008] The method of this invention is implemented through the following steps: First, the incoming watch case material is laser-engraved; then, the laser-engraved watch case blank is placed on a watch case fixing fixture, and the sides of the watch case are roughly polished using a polishing machine; next, the preliminarily processed watch case product is placed on the watch case fixing fixture, and the lugs of the watch case are roughly polished using a polishing machine; subsequently, the roughly polished watch case product is placed on the watch case fixing fixture, and the sides of the watch case are finely polished using a polishing machine; then, the roughly polished watch case product is placed on the watch case fixing fixture, and the lugs of the watch case are finely polished using a polishing machine; finally, the… The roughly polished watch case is placed on a case fixture, and a polishing machine is used to brush the main body of the case. Next, the lugs are roughly polished again. Then, the corners (C-corners) are roughly polished. Finally, the lugs are finely polished. After these steps, the case is sent to a cleaning tank to remove any remaining polishing solution. The cleaned case is then sent to a testing room for a full inspection to ensure the polishing quality meets standards.

[0009] Beneficial Effects: The automated titanium alloy watch case polishing method provided by this invention achieves a highly efficient and stable polishing process by employing a five-axis linkage polishing device and specialized fixtures. This significantly improves the consistency of polishing quality and yield rate, eliminates the instability of manual operation, and ensures consistent polishing results for each watch case. By changing the polishing process and sequence, and replacing polishing consumables, reliance on manual operation is reduced, lowering labor costs and waste of polishing materials, thereby reducing overall production costs. The five-axis linkage polishing device can flexibly adjust the polishing angle and position to adapt to the polishing needs of complex shapes in titanium alloy watch cases. Precise control of the polishing path and intensity enables uniform polishing of all parts of the watch case, ensuring a high-quality final product appearance. The high precision and stability of the automated equipment ensure the polishing quality of each watch case, reducing rework and scrap caused by poor polishing, and improving production efficiency and product qualification rate. Attached Figure Description

[0010] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0011] Figure 1 This is a schematic diagram of the product processing flow of the present invention;

[0012] Figure 2 This is a schematic diagram of the overall structure of the product processing position of the present invention from the front.

[0013] Figure 3 This is a schematic diagram of the overall structure of the product processing position of the present invention from the front.

[0014] Figure 4 This is a schematic diagram of the product of the present invention being mounted in the fixture.

[0015] Figure 5 This is a schematic diagram of the product of the present invention being mounted in reverse on a fixture.

[0016] In the diagram: 1. TP face; 2. Upper C on the lug end; 3. Lug end; 4. Bezel face; 5. Upper C; 6. Main body; 7. Lower C; 8. Slim body; 9. Lower C on the slim body; 10. Lower R on the lug end; 11. Bottom face; 12. Inside of the lug; 13. Lug face; 14. Watch case; 15. Fixture; 16. Locking knob. Detailed Implementation

[0017] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] This invention provides an automated method for polishing titanium watch cases. By employing a five-axis linkage polishing device and a specialized fixture, a highly efficient and stable polishing process is achieved. The specific embodiments of this invention are described in detail below with reference to the accompanying drawings.

[0019] Reference Figures 1 to 5 The specific implementation steps are as follows:

[0020] 1. Laser engraving: The incoming watch case material is laser engraved; this step is used to mark or engrave patterns on the surface of the watch case to ensure the clarity and durability of the marks during the subsequent polishing process.

[0021] 2. Rough Polishing: Place the laser-engraved watch case blank onto the watch case fixing fixture, rotate the locking knob, and then use a polishing machine to rough polish the sides of the watch case. Install 800-grit sandpaper on the polishing disc, set the spindle speed to 500-600 rpm, and the time to 2-5 minutes, using rough polishing fluid to perform rough contour polishing on the main body of the case. Switch to the other polishing disc, install 5-inch 800-grit sandpaper, set the spindle speed to 500-600 rpm, and the time to 2-5 minutes, using rough polishing fluid to perform rough polishing on the inside of the lugs.

[0022] 3. Lug Polishing: Place the pre-processed watch case onto the case fixing fixture, rotate the locking knob, and use a polishing machine to perform rough polishing on the lug side of the watch case. Install 800-grit sandpaper on the polishing disc, set the spindle speed to 300-600 rpm, and the time to 2-5 minutes, using coarse polishing fluid to perform the first rough polishing on the main body and the lower C-position of the main body. Switch to the second polishing disc, install 1500-grit sandpaper, set the spindle speed to 500-800 rpm, and the time to 2-5 minutes, using coarse polishing fluid to perform the second rough polishing on the main body and the lower C-position of the main body. Switch to the third polishing disc, install 5-inch 800-grit sandpaper, set the spindle speed to 500-800 rpm, and the time to 3-6 minutes, using coarse polishing fluid to perform rough polishing on the lugs and the upper C-position of the lugs. Finally, use hand polishing to perform rough polishing and brushing on the bottom surface.

[0023] 4. Side Polishing: Place the roughly polished watch case onto the case fixing fixture, rotate the locking knob, and use a polishing machine to perform a fine polishing treatment on the sides of the case. Install a 3-inch white intermediate polishing leather strap on the polishing disc, set the spindle speed to 600-1000 rpm, and the time to 4-8 minutes, using polishing fluid to perform the first fine polishing on the case and the inside of the lugs. Switch to the second polishing disc, install a 3-inch white fine polishing leather strap, set the spindle speed to 600-1000 rpm, and the time to 4-8 minutes, using polishing fluid to perform a second fine polishing on the case and the inside of the lugs.

[0024] 5. Lug Polishing: Place the roughly polished watch case onto the case fixing fixture, rotate the locking knob, and use a polishing machine to perform a fine polishing treatment on the lug side of the watch case. Install a 3-inch white intermediate polishing leather strap on the polishing disc, set the spindle speed to 800-1200 rpm, and the time to 4-6 minutes. Use polishing solution to perform the first fine polishing on the narrow section, lugs, the upper C-shaped area on the lugs, and the lower C-shaped area on the narrow section. Switch to the second polishing disc, install a 3-inch white intermediate polishing leather strap, set the spindle speed to 800-1200 rpm, and the time to 4-6 minutes. Use polishing solution to perform the second fine polishing on the narrow section, lugs, the upper C-shaped area on the lugs, and the lower C-shaped area on the narrow section.

[0025] 6. Brushing: Place the roughly polished watch case onto the case fixing fixture, rotate the locking knob, and use a polishing machine to brush the main body of the watch case. A 120-grit abrasive wheel is installed on the polishing disc, the spindle speed is set to 50–500 rpm, and the time is 3–5 minutes. The bezel is then hand-polished to achieve the desired brushing finish.

[0026] 7. Rough Polishing of Lugs: Place the rough-polished watch case onto the case fixing fixture, rotate the locking knob, and use a polishing machine to rough polish the lug area. Install an 800-grit diamond grinding wheel on the polishing disc, set the spindle speed to 300-500 rpm, and the time to 6-10 minutes, using rough polishing fluid to perform the first fine polishing on the lugs and the upper C position. Switch to the second polishing disc, install a 1500-grit diamond grinding wheel, set the spindle speed to 300-500 rpm, and the time to 6-10 minutes, using rough polishing fluid to perform the second fine polishing on the lugs and the upper C position. Switch to the third polishing disc, install 2000-grit sandpaper, set the spindle speed to 1200-2000 rpm, and the time to 8-12 minutes, using rough polishing fluid to perform the second fine polishing on the lugs and the upper C position. Switch to the fourth polishing disc, install 3000 grit sandpaper, set the spindle speed to 1200-2000 rpm, and the time to 8-12 minutes. Then, use coarse polishing fluid to perform a second fine polishing on the ear surface and the upper C position.

[0027] 8. C-corner coarse polishing: Place the coarse-polished watch case onto the case fixing fixture, rotate the locking knob, and use a polishing machine to coarsely polish the C-corner area of ​​the watch case. Install a 3-inch white intermediate polishing pad on the polishing disc, set the spindle speed to 300-600 rpm, and the time to 4-8 minutes, using coarse polishing fluid to coarsely polish the lower C-corner area. Send the finished watch case to a cleaning tank to clean the surface and remove any remaining polishing fluid.

[0028] 9. Lug Polishing: Place the roughly polished watch case onto the case fixture, rotate the locking knob, and use a polishing machine to perform a fine polishing on the lug area. Install a 3-inch white intermediate polishing pad on the polishing disc, set the spindle speed to 300-500 rpm, and the time to 8-10 minutes, using polishing fluid to perform the first fine polishing on the lugs and the upper C position. Switch to the second polishing disc, install a 3-inch white fine polishing pad, set the spindle speed to 1200-2000 rpm, and the time to 8-12 minutes, using polishing fluid to perform a second fine polishing on the lugs and the upper C position.

[0029] 10. C-Corner Polishing: Place the roughly polished watch case onto the case fixing fixture, rotate the locking knob, and use a polishing machine to perform a fine polishing treatment on the C-corner area of ​​the watch case. Install a 3-inch white intermediate polishing pad on the polishing disc, set the spindle speed to 600-800 rpm, and the time to 4-8 minutes, using polishing fluid to perform the first fine polishing of the lower C-corner area. Switch to the second polishing disc, install a 3-inch white fine polishing pad, set the spindle speed to 800-1200 rpm, and the time to 4-8 minutes, using polishing fluid to perform a second fine polishing of the lower C-corner area.

[0030] 11. Cleaning: The finished watch case is sent to a cleaning tank to clean the product and remove any remaining polishing solution from the surface. The cleaning solution is a neutral detergent, and the cleaning time is 5 minutes.

[0031] 12. Inspection: The cleaned watch cases are sent to the inspection room for a full inspection to ensure the polishing quality meets standards. The inspection equipment is a coordinate measuring machine with an accuracy of 0.01mm.

[0032] Through the above steps, the automated titanium watch case polishing method of the present invention can significantly improve the consistency of polishing quality and yield, reduce production costs, increase production efficiency, improve the operating environment, adapt to the polishing needs of complex shapes, reduce the defect rate, effectively solve many problems in the prior art, and has broad application prospects.

[0033] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. An automated method for polishing titanium watch cases, characterized in that, The method includes: implementation based on a five-axis linkage polishing device, and the polishing method includes the following steps: Step 1: Laser engraving is performed on the incoming watch case material; Step 2: Place the laser-engraved watch case blank onto the watch case fixing fixture, and then use a polishing machine to perform rough polishing on the side of the watch case. Step 3: Place the pre-processed watch case product onto the watch case fixing fixture, and then use a polishing machine to perform rough polishing on the lug side of the watch case; Step 4: Place the rough polished watch case onto the watch case fixing fixture, and then use a polishing machine to perform fine polishing on the sides of the watch case; Step 5: Place the rough polished watch case onto the watch case fixing fixture, and then use a polishing machine to perform fine polishing on the lug side of the watch case. Step Six: Place the rough polished watch case onto the watch case fixture, and then use a polishing machine to brush the main body of the watch case. Step 7: Place the watch case product that has completed the rough polishing onto the watch case fixing fixture, and then use a polishing machine to perform rough polishing on the lugs of the watch case. Step 8: Place the watch case product that has completed the rough polishing onto the watch case fixing fixture, and then use a polishing machine to perform rough polishing on the C corner of the watch case; Step 9: Place the rough-polished watch case onto the watch case fixture, and then use a polishing machine to perform fine polishing on the lugs of the watch case. Step 10: Place the rough polished watch case onto the watch case fixing fixture, and then use a polishing machine to perform fine polishing on the C-corner of the watch case; Step 11: Send the finished watch case to the cleaning tank to clean the product and remove the polishing liquid remaining on the surface. Step 12: Send the cleaned watch case to the testing room for a full inspection to ensure that the polishing quality is up to standard.

2. The automated polishing method for titanium watch cases according to claim 1, characterized in that, Step two also includes the following steps: A: The side positions of the product include the main body and the inner side of the lugs. Place the watch case face up on the fixing fixture, and then turn the locking knob to fix the watch case on the fixture. B: Install a contour grinding wheel on the polishing plate and set the spindle speed to 500-600 rpm for 2-5 minutes. Use coarse polishing fluid to perform coarse polishing and contour grinding on the main body area. C: Switch to the other polishing disc, install 5-inch sandpaper with a grit of 800 and set the spindle speed to 500-600 rpm for 2-5 minutes, and use coarse polishing fluid to coarsely polish the inner side of the ear.

3. The automated polishing method for titanium watch cases according to claim 1, characterized in that, Step three also includes the following steps: A: The product side positions include the slim body, the ear end, the upper C of the ear end, and the lower C of the slim body. Place the watch case product upside down on the fixing fixture, and then turn the locking knob to fix the watch case on the fixture. B: Install 800 grit sandpaper on the polishing plate and set the spindle speed to 300-600 rpm for 2-5 minutes. Use coarse polishing fluid to perform the first coarse polishing on the fine body and the lower C position of the fine body. C: Switch to the second polishing disc, install 1500 grit sandpaper and set the spindle speed to 500-800 rpm for 2-5 minutes, and then use coarse polishing fluid to perform a second coarse polishing on the fine body and the lower C position of the fine body; D: Switch to the third polishing disc, install 5-inch sandpaper with a grit of 800 and set the spindle speed to 500-800 rpm for 3-6 minutes, and use coarse polishing fluid to coarsely polish the ear tip and position C on the ear tip. E: The bottom surface is roughly polished and brushed using a hand-polishing method; F: The finished watch case products are sent to the cleaning tank to clean the products and remove the polishing liquid remaining on the product surface. G: The cleaned watch cases are sent to the testing room for a full inspection to ensure that the polishing quality is up to standard.

4. The automated polishing method for titanium watch cases according to claim 1, characterized in that, Step four also includes the following steps: A: The side positions of the product include the main body and the inner side of the lugs. Place the watch case face up on the fixing fixture, and then turn the locking knob to fix the watch case on the fixture. B: Install a 3-inch white medium polishing pad on the polishing plate and set the spindle speed to 600-1000 rpm for 4-8 minutes. Use fine polishing fluid to perform the first fine polishing on the body and the inner side of the ear. C: Switch to the second polishing disc, install a 3-inch white polishing pad and set the spindle speed to 600-1000 rpm for 4-8 minutes. Use polishing fluid to perform a second polishing on the body and the inner side of the ear.

5. The automated polishing method for titanium watch cases according to claim 1, characterized in that, Step five also includes the following steps: A: The product side positions include the slim body, the ear end, the upper C of the ear end, and the lower C of the slim body. Place the watch case product upside down on the fixing fixture, and then turn the locking knob to fix the watch case on the fixture. B: Install a 3-inch white medium polishing pad on the polishing plate and set the spindle speed to 800-1200 rpm for 4-6 minutes. Use fine polishing fluid to perform the first fine polishing on the thin body, ear tip, upper C of the ear tip and lower C of the thin body. C: Switch to the second polishing disc, install a 3-inch white medium polishing pad and set the spindle speed to 800-1200 rpm for 4-6 minutes. Use the fine polishing fluid to perform a second fine polishing on the thin body, ear tip, upper C position of the ear tip and lower C position of the thin body. E: The finished watch case products are sent to the cleaning tank to clean the products and remove the polishing liquid remaining on the product surface. F: The cleaned watch case products are sent to the testing room for a full inspection to ensure that the polishing quality of the products is up to standard.

6. The automated polishing method for titanium watch cases according to claim 1, characterized in that, Step six also includes the following steps: A: Place the watch case face up on the fixture, and then turn the locking knob to fix the watch case on the fixture; B: Install a 120-grit abrasive wheel on the polishing disc and set the spindle speed to 50-500 rpm for 3-5 minutes to perform wire drawing on the main body. C: The threads on the ring surface are processed by hand-throwing.

7. The automated polishing method for titanium watch cases according to claim 1, characterized in that, Step seven also includes the following steps: A: The product ear position includes the ear surface and the upper C position. Place the watch case product upright on the fixing fixture, and then turn the locking knob to fix the watch case on the fixture. B: Install an 800-grit diamond grinding disc on the polishing plate and set the spindle speed to 300-500 rpm for 6-10 minutes. Use coarse polishing fluid to perform the first fine polishing on the ear surface and the upper C position. C: Switch to the second polishing disc, install a 1500-grit diamond grinding disc and set the spindle speed to 300-500 rpm for 6-10 minutes, and then perform a second fine polishing on the ear surface and the upper C position using coarse polishing fluid. D: Switch to the third polishing disc, install 2000 grit sandpaper and set the spindle speed to 1200-2000 rpm for 8-12 minutes, and then perform a second fine polishing on the ear surface and the upper C position using coarse polishing fluid. E: Switch to the fourth polishing disc, install 3000 grit sandpaper and set the spindle speed to 1200-2000 rpm for 8-12 minutes, and then perform a second fine polishing on the ear surface and the upper C position using coarse polishing fluid.

8. The automated polishing method for titanium watch cases according to claim 1, characterized in that, The eighth step also Includes the following steps: A: The polishing position is the lower C corner. Place the watch case face up on the fixing fixture, and then turn the locking knob to fix the watch case on the fixture. B: Install a 3-inch white intermediate polishing pad on the polishing plate and set the spindle speed to 300-600 rpm for 4-8 minutes. Use coarse polishing fluid to coarsely polish the lower C position. C: The finished watch case products are sent to the cleaning tank to clean the products and remove the polishing liquid remaining on the product surface. D: The cleaned watch cases are sent to the testing room for a full inspection to ensure that the polishing quality is up to standard.

9. The automated polishing method for titanium watch cases according to claim 1, characterized in that, Step nine also includes the following steps: A: The product ear position includes the ear surface and the upper C position. Place the watch case product upright on the fixing fixture, and then turn the locking knob to fix the watch case on the fixture. B: Install a 3-inch white medium polishing pad on the polishing plate and set the spindle speed to 300-500 rpm for 8-10 minutes. Use fine polishing fluid to perform the first fine polishing on the ear surface and the upper C position. C: Switch to the second polishing plate, install a 3-inch white polishing pad and set the spindle speed to 1200-2000 rpm for 8-12 minutes. Use polishing fluid to perform a second polishing on the ear surface and the upper C position.

10. The automated polishing method for titanium watch cases according to claim 1, characterized in that, Step ten also includes the following steps: A: The polishing position in step ten is the lower C corner position. Place the watch case product face up on the fixing fixture, and then turn the locking knob to fix the watch case on the fixture. B: Install a 3-inch white intermediate polishing pad on the polishing plate and set the spindle speed to 600-800 rpm for 4-8 minutes. Use the fine polishing fluid to perform the first fine polishing on the lower C corner. C: Switch to the second polishing disc, install a 3-inch white polishing pad and set the spindle speed to 800-1200 rpm for 4-8 minutes. Use polishing fluid to perform a second polishing on the lower C corner. D: The finished watch case products are sent to the cleaning tank to clean the products and remove the polishing liquid remaining on the product surface. E: The cleaned watch case products are sent to the testing room for a full inspection to ensure that the polishing quality of the products is up to standard.

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