Dual five-axis CNC turning and milling compound processing equipment and automatic processing method for the jewelry industry

Abstract

The present invention discloses a double five-axis CNC turning and milling compound processing equipment and an automatic processing method for the jewelry industry, which are used to process a strip blank into a plurality of finished parts. The strip blank is clamped on the first clamping mechanism, and the compound processing spindle performs turning and milling compound processing on the first end face of the strip blank. After the processing of the first end face is completed, the second clamping mechanism clamps the first end face of the strip blank, and the compound processing spindle cuts it according to the predetermined width of the finished part. The second clamping mechanism makes the cut second end face face upward, and the compound processing spindle performs compound processing on the second end face until the processing of the finished part is completed. The picking device removes the processed finished part and places it in the finished part collection box. The feeding device withdraws a predetermined length of the strip blank on the first clamping mechanism, and the compound processing spindle starts the turning and milling compound processing of the second finished part until the processing of the entire strip blank is completed. The entire production process does not require manual intervention, improving the production efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of mechanical equipment, and in particular to a dual five-axis CNC turning and milling composite processing equipment and an automatic processing method for the jewelry industry. Background Art

[0002] CNC machine tools, short for Computer Numerical Control Machine Tools (CNC), are automated machine tools equipped with a program-based control system. This control system generates various control signals to control the machine's movements, automatically producing parts according to the shapes and dimensions specified in the drawings. CNC machine tools effectively address the challenges of machining complex, precise, small-batch, and high-variety parts. They are flexible, high-performance automated machine tools that represent the development trend of modern machine tool control technology and are typical mechatronic products.

[0003] In the jewelry processing industry, jewelry, accessories, and crafts often feature numerous decorative patterns or cross-sections on their exterior surfaces, leading to complex processing techniques. Consequently, jewelry processing typically involves cutting large blanks into smaller pieces, then loading each smaller piece onto the processing equipment. Once the equipment has finished processing a smaller piece, a human operator manually replaces it with the next smaller piece. This production method requires manual intervention and results in low production efficiency. Summary of the Invention

[0004] In view of this, it is necessary to provide a dual five-axis CNC turning and milling composite processing equipment and automatic processing method for the jewelry industry that can automatically complete the production and processing of large bar blanks to finished products through programming.

[0005] A dual five-axis CNC turning and milling composite processing equipment for the jewelry industry is used to process a bar blank into multiple finished parts. It includes a CNC dual five-axis machining center device, a composite machining spindle, a feeding device, a pick-up device and a fixture replacement device. The composite machining spindle is equipped with a machining tool; the CNC five-axis machining center device includes a first clamping mechanism and a second clamping mechanism arranged in parallel. The first clamping mechanism is used to fix and place the bar blank, and the second clamping mechanism is used to fix and place the finished part. After the composite machining spindle processes the first end face of the bar blank on the first clamping mechanism, the finished part is turned away from the bar blank. The composite machining spindle then processes the second end face of the finished part on the second clamping mechanism. After the machining is completed, the pick-up device removes the processed finished part from the second clamping mechanism.

[0006] Preferably, the CNC double five-axis machining center device further includes an X-axis module, a Y-axis module, and a Z-axis module. The X-axis module and the Z-axis module are perpendicularly arranged in a vertical plane, and the X-axis module, the Y-axis module, and the Z-axis module are perpendicularly arranged pairwise. The composite machining spindle, the feeding device, the workpiece picking device, and the fixture replacement device are arranged in parallel on the Z-axis module. The feeding device, the workpiece picking device, and the fixture are respectively arranged on both sides of the composite machining spindle. The X-axis module drives the composite machining spindle, the feeding device, the workpiece picking device, and the fixture replacement device to move horizontally, and the Z-axis module drives the composite machining spindle, the feeding device, the workpiece picking device, and the fixture replacement device to move vertically.

[0007] Preferably, the Y-axis module includes a Y-axis servo motor, a Y-axis ball screw, a Y-axis linear guide, and a Y-axis moving block. The Y-axis servo motor drives the Y-axis moving block to move along the Y-axis ball screw on the Y-axis linear guide. The first B-axis module and the second B-axis module are arranged in parallel on the Y-axis moving member. A second B-axis horizontal moving module is arranged below the second B-axis module, and the second B-axis horizontal moving module is used to drive the second B-axis module to move horizontally to adjust the distance between the second B-axis module and the first B-axis module.

[0008] Preferably, a first C-axis module is arranged at the output end of the first B-axis module. The first B-axis module drives the first C-axis module to rotate. The first clamping mechanism is arranged at the output end of the first C-axis module. The first C-axis module drives the first clamping mechanism to rotate. A first clamping fixture is arranged on the first clamping mechanism, and a bar stock is passed through the first clamping fixture. A second C-axis module is arranged at the output end of the second B-axis module. The second B-axis module drives the second C-axis module to rotate. The second clamping mechanism is arranged at the output end of the second C-axis module. The second C-axis module drives the second clamping mechanism to rotate. A second clamping fixture is arranged on the second clamping mechanism, and a finished product is sleeved on the second clamping fixture.

[0009] Preferably, a fixture mounting platform is arranged on the second C-axis module. A plurality of second clamping fixtures with different sizes are arranged on the fixture mounting platform, and the plurality of second clamping fixtures with different sizes are arranged on the second clamping mechanism to adapt to finished products with different sizes.

[0010] Preferably, the second clamping fixture has a plurality of finished product clamping jaws. The plurality of finished product clamping jaws are arranged in a circular pattern, and there is a gap between adjacent two finished product clamping jaws. Each finished product clamping jaw has elasticity.

[0011] Preferably, the feeding device includes a first downward pressing air cylinder, a feeding gripper, and a feeding air cylinder. The first downward pressing air cylinder is used to drive the feeding gripper to move up and down, and the feeding air cylinder is used to drive the feeding gripper to contract or expand so as to grip or release the strip blank.

[0012] Preferably, the picking device includes a second downward pressing air cylinder, a plurality of picking grippers, a picking air cylinder, and a picking fixing member. The width of each picking gripper is less than the width of the gap between the finished product grippers, and the distance between two adjacent picking grippers corresponds to the gap between the finished product grippers; the picking air cylinder is used to drive the picking grippers to contract or expand so as to pick up the finished product; the picking fixing member is arranged at the center of the plurality of picking grippers, and the picking fixing member has elasticity to avoid damaging the finished product; the second downward pressing air cylinder is used to drive the picking grippers and the picking fixing member to move up and down.

[0013] Preferably, the fixture replacement device includes a third downward pressing air cylinder, a plurality of fixture grippers, a fixture air cylinder, and a blowing head. The fixture air cylinder is used to drive the plurality of grippers to contract or open so as to grip or release the second clamping fixture; the blowing head is arranged between the plurality of fixture grippers, and the blowing head is used to clean the debris on the second clamping fixture; the third downward pressing air cylinder is used to drive the fixture grippers and the blowing head to move up and down.

[0014] Preferably, it further includes a tool magazine assembly. The tool magazine assembly is installed on the column of the equipment support. The tool magazine assembly includes a tool magazine servo motor, a cam divider, a tool magazine bottom plate, and a rotating tool disc. The rotating tool disc and the tool magazine servo motor, the cam divider are respectively installed on both sides of the tool magazine bottom plate. The rotating tool disc rotates under the drive of the tool magazine servo motor, and the cam divider is used to control the rotation angle of the rotating tool disc. A plurality of claws are installed on the rotating tool disc, and the plurality of claws are evenly arranged on the same circumference with the center of the rotating tool disc as the center of the circle. The processing tool is installed on the claw.

[0015] Preferably, it further includes a finished product collection box. The finished product collection box is arranged at the back of the tool magazine assembly. The finished product collection box has an inclined top surface, and the finished product collection box is used to place the finished product.

[0016] Moreover, an automatic processing method based on a double five-axis CNC turning and milling compound processing equipment is used to automatically process a strip blank into a finished product using the double five-axis CNC turning and milling compound processing equipment for the jewelry industry as described above, and includes the following specific steps:

[0017] Pass the strip blank through the first clamping mechanism, so that the length of the strip blank protruding from the first clamping mechanism is greater than the width of the finished product.

[0018] The compound machining spindle performs turning and milling compound machining on the first end face of the bar stock on the first clamping mechanism;

[0019] The second clamping mechanism grasps the machined end face of the bar stock, and the compound machining spindle turns the finished part away from the bar stock;

[0020] The compound machining spindle performs turning and milling compound machining on the second end face of the finished part on the second clamping mechanism;

[0021] The picking device grasps the finished part machined on the second clamping mechanism;

[0022] When the compound machining spindle changes the machining tool, the picking device simultaneously places the finished part into the finished part collection box;

[0023] Check whether the length of the bar stock protruding from the first clamping mechanism is greater than the width of the finished part. If not, the feeding device withdraws the bar stock from the first clamping mechanism by a predetermined length, and then the compound machining spindle starts to perform compound machining on the first end face.

[0024] Preferably, the specific steps for the second clamping mechanism to grasp the machined end face of the bar stock and the compound machining spindle to turn the finished part away from the bar stock include:

[0025] The first B-axis module drives the first C-axis module to rotate, and the second B-axis module drives the second C-axis module to rotate, so that the first clamping mechanism and the second clamping mechanism are arranged oppositely;

[0026] The second B-axis horizontal movement module drives the second B-axis module and the second C-axis module to approach the first B-axis module and the first C-axis module;

[0027] The second clamping fixture tightly holds the machined first end face;

[0028] The compound machining spindle uses a turning tool to cut off a predetermined length of the finished part from the bar stock;

[0029] The second B-axis horizontal movement module drives the second B-axis module and the second C-axis module to move away from the first B-axis module and the first C-axis module;

[0030] The second B-axis module drives the second C-axis module to rotate, so that the second clamping fixture and the finished part to be machined face upward.

[0031] Preferably, it further includes the specific steps for replacing the second clamping fixture when machining bar stocks with different diameters:

[0032] The first B-axis module drives the first C-axis module to rotate, so that the fixture installation platform faces upward;

[0033] The Z-axis module drives the fixture replacement device to move above the fixture installation platform;

[0034] The third pressing cylinder drives the fixture jaws and the blowing head to move downward. After the fixture jaws grasp the second clamping fixture corresponding to the diameter of the strip blank, the third pressing cylinder drives the fixture jaws and the blowing head to move upward;

[0035] The blowing head blows air to the second clamping fixture grasped by the fixture jaws to clean the metal debris on the second clamping fixture;

[0036] The first B-axis module drives the first C-axis module to rotate to make the second clamping mechanism face upward;

[0037] The third pressing cylinder drives the fixture jaws and the blowing head to move downward to install the second clamping fixture on the second clamping mechanism;

[0038] The Z-axis module drives the fixture replacement device to move to a safe position.

[0039] In the above-mentioned dual five-axis CNC turning and milling compound processing equipment and automatic processing method for the jewelry industry, the strip blank is clamped on the first clamping mechanism, and the compound processing spindle performs turning and milling compound processing on the first end face of the strip blank. After the processing of the first end face is completed, the second clamping mechanism holds the first end face of the strip blank, and the compound processing spindle cuts it according to the predetermined width of the finished part. The second clamping mechanism makes the cut second end face face upward, and the compound processing spindle performs compound processing on the second end face until the processing of the finished part is completed. The picking device takes down the processed finished part and places it in the finished part collection box. The feeding device pulls out a predetermined length of the strip blank on the first clamping mechanism, and the compound processing spindle starts the turning and milling compound processing of the second finished part until the entire strip blank is processed. No manual intervention is required during the whole production process, which improves the production efficiency, improves the working efficiency of the CNC turning and milling compound processing equipment, and reduces the cost. The structure of the present invention is simple, easy to implement, low in cost, and convenient for popularization. Description of the Drawings

[0040] Figure 1 is a schematic structural diagram of the dual five-axis CNC turning and milling compound processing equipment for the jewelry industry in an embodiment of the present invention.

[0041] Figure 2 is a schematic structural diagram of the X-axis module and the Z-axis module of the dual five-axis CNC turning and milling compound processing equipment for the jewelry industry in an embodiment of the present invention.

[0042] Figure 3 is a schematic structural diagram of the workbench, Y-axis module, B-axis module and C-axis module of the dual five-axis CNC turning and milling compound processing equipment for the jewelry industry in an embodiment of the present invention.

[0043] Figure 4It is a schematic structural diagram of the Y-axis module, B-axis module and C-axis module of the double five-axis CNC turning and milling compound processing equipment for the jewelry industry in the embodiment of the present invention.

[0044] Figure 5 It is a schematic structural diagram of the feeding device of the double five-axis CNC turning and milling compound processing equipment for the jewelry industry in the embodiment of the present invention.

[0045] Figure 6 It is a schematic structural diagram of the workpiece picking device and fixture replacement device of the double five-axis CNC turning and milling compound processing equipment for the jewelry industry in the embodiment of the present invention.

[0046] Figure 7 It is a schematic structural diagram of the workpiece picking device of the double five-axis CNC turning and milling compound processing equipment for the jewelry industry in the embodiment of the present invention.

[0047] Figure 8 It is a schematic structural diagram of the fixture replacement device of the double five-axis CNC turning and milling compound processing equipment for the jewelry industry in the embodiment of the present invention.

[0048] Figure 9 It is a schematic structural diagram of the tool magazine assembly of the double five-axis CNC turning and milling compound processing equipment for the jewelry industry in the embodiment of the present invention.

[0049] Figure 10 It is a schematic structural diagram of the finished product collection box of the double five-axis CNC turning and milling compound processing equipment for the jewelry industry in the embodiment of the present invention.

[0050] Figure 11 It is a flowchart of the automatic processing method based on the double five-axis CNC turning and milling compound processing equipment in the embodiment of the present invention. Specific embodiments

[0051] In this embodiment, the double five-axis CNC turning and milling compound processing equipment for the jewelry industry is taken as an example, and the present invention will be described in detail below in conjunction with specific embodiments and drawings.

[0052] Please refer to Figures 1 to 10, showing a dual five-axis CNC turning and milling compound processing equipment 100 provided by an embodiment of the present invention for processing a bar blank into multiple finished parts, including a CNC dual five-axis machining center device 30, a compound machining spindle 40, a feeding device 50, a picking device 60, and a fixture replacement device 70. A machining tool 41 is installed on the compound machining spindle 40; the CNC five-axis machining center device 30 includes a first clamping mechanism 343 and a second clamping mechanism 353 arranged in parallel. The first clamping mechanism 343 is used to fixedly place the bar blank, and the second clamping mechanism 353 is used to fixedly place the finished part. After the compound machining spindle 40 finishes machining the first end face of the bar blank on the first clamping mechanism 343, it turns the finished part away from the bar blank, and then the compound machining spindle 40 machines the second end face of the finished part on the second clamping mechanism 353. After the machining is completed, the picking device 60 takes out the machined finished part from the second clamping mechanism 353.

[0053] Specifically, in the dual five-axis CNC turning and milling compound processing equipment, turning and milling processing can be simultaneously achieved. After the finished part is subjected to turning processing, the machining surface accuracy is higher, and the surface of the jewelry is smoother and more delicate.

[0054] Preferably, the CNC dual five-axis machining center device 30 further includes an X-axis module 31, a Y-axis module 32, and a Z-axis module 33. The X-axis module 31 and the Z-axis module 33 are perpendicularly arranged in a vertical plane, and the X-axis module 31, the Y-axis module 32, and the Z-axis module 33 are perpendicularly arranged pairwise; the compound machining spindle 40, the feeding device 50, the picking device 60, and the fixture replacement device 70 are arranged in parallel on the Z-axis module 33. The feeding device 50, the picking device 60, and the fixture are respectively arranged on both sides of the compound machining spindle 40. The X-axis module 31 drives the compound machining spindle 40, the feeding device 50, the picking device 60, and the fixture replacement device 70 to move horizontally, and the Z-axis module 33 drives the compound machining spindle 40, the feeding device 50, the picking device 60, and the fixture replacement device 70 to move vertically.

[0055] Specifically, it further includes a workbench 10 and an equipment support 20 arranged on the workbench 10. The equipment support 20 includes a cross beam 21 and columns 22 at both ends of the cross beam 21. The X-axis module 31 is horizontally arranged on the cross beam 21, and the Z-axis module 33 is arranged on the X-axis module 31 and moves horizontally under the drive of the X-axis module 31; the Y-axis module 32 is arranged on the workbench 10 below the equipment support 20 and is perpendicularly arranged with the X-axis module 31 and the Z-axis module.

[0056] Preferably, the Y-axis module 32 includes a Y-axis servo motor, a Y-axis ball screw, a Y-axis linear guide 323, and a Y-axis moving block. The Y-axis servo motor drives the Y-axis moving block to move along the Y-axis ball screw on the Y-axis linear guide 323. The first B-axis module 341 and the second B-axis module 351 are arranged in parallel on the Y-axis moving member 324. A second B-axis horizontal moving module 36 is provided below the second B-axis module 351. The second B-axis horizontal moving module 36 is used to drive the second B-axis module 351 to move horizontally to adjust the distance between the second B-axis module 351 and the first B-axis module 341.

[0057] Specifically, the second B-axis horizontal moving module 36 includes a horizontal servo motor 361, a horizontal ball screw, a horizontal linear guide 363, and a horizontal moving block 364. The horizontal servo motor 361 drives the horizontal moving block 364 to move along the horizontal ball screw on the horizontal linear guide 363. The second B-axis module 351 is fixedly arranged on the horizontal moving block 364. The second B-axis module 351 moves horizontally left and right under the drive of the second B-axis horizontal moving module 36.

[0058] Specifically, the Y-axis module 32 drives the first B-axis module 341 and the second B-axis module 351 to move synchronously back and forth in the horizontal direction. The second B-axis horizontal moving module 36 drives the second B-axis module 351 to move left and right in the horizontal direction, so that the second B-axis module 351 approaches or moves away from the first B-axis module 341.

[0059] Preferably, a first C-axis module 342 is provided at the output end of the first B-axis module 341. The first B-axis module 341 drives the first C-axis module 342 to rotate. The first clamping mechanism 343 is arranged at the output end of the first C-axis module 342. The first C-axis module 342 drives the first clamping mechanism 343 to rotate. A first clamping fixture is provided on the first clamping mechanism 343. The strip blank is inserted into the first clamping fixture. A second C-axis module 352 is provided at the output end of the second B-axis module 351. The second B-axis module 351 drives the second C-axis module 352 to rotate. The second clamping mechanism 353 is arranged at the output end of the second C-axis module 352. The second C-axis module 352 drives the second clamping mechanism 353 to rotate. A second clamping fixture 355 is provided on the second clamping mechanism 353. The finished product is sleeved on the second clamping fixture 355.

[0060] Specifically, the first B-axis module 341 and the second B-axis module 351 take the Y-axis direction as the rotation axis. The rotation axis of the first C-axis module 342 is perpendicularly arranged to the rotation axis of the first B-axis module 341, and the rotation axis of the second C-axis module 352 is perpendicularly arranged to the rotation axis of the second B-axis module 351.

[0061] Preferably, a fixture mounting platform 354 is provided on the second C-axis module 352. A plurality of second clamping fixtures 355 with different sizes are provided on the fixture mounting platform 354. The plurality of second clamping fixtures 355 with different sizes are arranged on the second clamping mechanism 353 to adapt to finished products of different sizes.

[0062] Preferably, the second clamping fixture 355 has a plurality of finished product claws 3551. The plurality of finished product claws 3551 are arranged in a circular pattern. There is a gap between adjacent two of the finished product claws 3551. Each of the finished product claws 3551 has elasticity.

[0063] Specifically, after the finished product is sleeved on the outer side of the top end of the second clamping fixture 355, each of the finished product claws 3551 opens outwards, so that the finished product is fixedly arranged on the second clamping fixture 355.

[0064] Preferably, the feeding device 50 includes a first pressing cylinder 51, a feeding claw 52, and a feeding cylinder 53. The first pressing cylinder 51 is used to drive the feeding claw 52 to move up and down. The feeding cylinder 53 is used to drive the feeding claw 52 to contract or expand, so as to grip or release the strip blank.

[0065] Specifically, when the processing length of the strip blank on the first clamping mechanism 343 is less than the required length, the first clamping mechanism 343 is turned upwards. The first pressing cylinder 51 drives the feeding claw 52 to move downwards. The feeding cylinder 53 drives the feeding claw 52 to grip the top end of the strip blank. The first pressing cylinder 51 drives the feeding claw 52 to move upwards. After pulling out a predetermined length of the strip blank, the feeding cylinder 53 makes the feeding claw 52 release the strip blank. The first pressing cylinder 51 continues to drive the feeding claw 52 to rise to a safe height.

[0066] Preferably, the picking device 60 includes a second downward pressing cylinder 61, a plurality of picking jaws 62, a picking cylinder 63, and a picking fixing member 64. The width of each picking jaw 62 is less than the width of the gap between the finished product jaws, and the distance between two adjacent picking jaws 62 corresponds to the gap between the finished product jaws. The picking cylinder 63 is used to drive the picking jaws 62 to contract or expand to grasp the finished product. The picking fixing member 64 is arranged at the center of the plurality of picking jaws 62. The picking fixing member 64 is elastic to avoid damaging the finished product. The second downward pressing cylinder 61 is used to drive the picking jaws 62 and the picking fixing member 64 to move up and down.

[0067] Specifically, in this embodiment, the plurality of picking jaws 62 are arranged on the same circumference, and the picking fixing member 64 is arranged at the center of the circle, that is, the plurality of picking jaws 62 are arranged around the picking fixing member 64.

[0068] Specifically, the picking fixing member 64 has a bottom plate that contacts the finished product. The bottom plate is made of a flexible material such as rubber or silica gel, or an elastic member is arranged above the bottom plate so that when the bottom plate contacts the finished product, the distance between the bottom plate and the picking jaws 62 can change according to the height of the finished product, avoiding damaging the processed finished product.

[0069] Specifically, in this embodiment, the second clamping fixture 355 has six finished product jaws 3551. Six gaps are formed between the circularly arranged finished product jaws, that is, the distance between two adjacent gaps is 60 degrees. The picking device 60 includes three picking jaws 62, and the distance between two adjacent picking jaws 62 is 120 degrees. When picking, the picking jaws 62 are aligned with the gap, the picking cylinder 63 drives the picking jaws 62 to contract, the picking jaws 62 are inserted from the bottom of the gap, the bottom plate contacts the top of the finished product, the picking jaws 62 and the fixing member grip the finished product, and the second downward pressing cylinder 61 drives the picking jaws 62 and the picking fixing member 64 to move up, so that the finished product is separated from the second clamping fixture 355, and the picking operation is completed.

[0070] Preferably, the fixture replacement device 70 includes a third downward pressing cylinder 71, a plurality of fixture jaws 72, a fixture cylinder 73, and a blowing head 74. The fixture cylinder 73 is used to drive the plurality of fixture jaws 72 to contract or expand to grasp or release the second clamping fixture 355. The blowing head 74 is arranged between the plurality of fixture jaws 72. The blowing head 74 is used to clean the debris on the second clamping fixture 355. The third downward pressing cylinder 71 is used to drive the fixture jaws 72 and the blowing head 74 to move up and down.

[0071] Specifically, in this embodiment, the fixture installation platform 354 is provided on the outer wall of the second C-axis module 352. When replacing the second clamping fixture 355, the second B-axis module 351 drives the second C-axis module 352 to rotate, making the fixture installation platform 354 face upward. The third pressing cylinder 71 drives the fixture jaw 72 and the blowing head 74 to descend. The fixture cylinder 73 drives the fixture jaw 72 to contract, so that the fixture jaw 72 tightly holds the second clamping fixture 355. The third pressing cylinder 71 drives the fixture jaw 72 and the blowing head 74 to ascend, and removes the second clamping fixture 355 from the fixture installation platform 354. The blowing head 74 blows air to the second clamping fixture 355 to clean the metal debris on the second clamping fixture 355. The second B-axis module 351 drives the second C-axis module 352 to rotate, making the second clamping mechanism 353 face upward. The third pressing cylinder 71 drives the fixture jaw 72 and the blowing head 74 to descend, and installs the second clamping fixture 355 on the second clamping mechanism 353. The third pressing cylinder 71 drives the fixture jaw 72 and the blowing head 74 to return to the safe position.

[0072] Preferably, it further includes a tool magazine assembly 80. The tool magazine assembly 80 is installed on the column 22 of the equipment bracket 20. The tool magazine assembly 80 includes a tool magazine servo motor 81, a cam divider, a tool magazine bottom plate 83 and a rotating tool disc 84. The rotating tool disc 84 and the tool magazine servo motor 81, the cam divider are respectively installed on both sides of the tool magazine bottom plate 83. The rotating tool disc 84 rotates under the drive of the tool magazine servo motor 81. The cam divider is used to control the rotation angle of the rotating tool disc 84. A plurality of claws 85 are installed on the rotating tool disc 84. The plurality of claws 85 are evenly arranged on the same circumference with the center of the rotating tool disc 84 as the center. The processing tool 41 is installed on the claw 85.

[0073] Preferably, it further includes a finished product collection box 90. The finished product collection box 90 is arranged on the back of the tool magazine assembly 80. The finished product collection box 90 has an inclined top surface. The finished product collection box is used to place finished products.

[0074] Specifically, when placing a finished product, the picking device moves above the finished product collection box 90. The second pressing cylinder 61 moves the picking jaw 62 and the picking fixing part 64 above the finished product collection box 90. The picking cylinder 63 makes the picking jaw 62 open. The finished product falls on the inclined top surface and slides into the bottom of the box along the inclined top surface.

[0075] Specifically, after the picking device 60 grasps the finished product, when the composite machining spindle 40 moves to the tool magazine assembly 80 to replace the machining tool 41, the picking device 60 moves above the finished product collection box 90. At this time, the picking jaws 62 open, and the finished product is placed into the finished product collection box 90.

[0076] Specifically, the distance between the picking device 60 and the composite machining spindle 40 corresponds to the distance between the finished product collection box 90 and the machining tool 41 on the rotary tool disc 84. When the composite machining spindle 40 replaces the machining tool 41, the picking device 60 completes the collection of the finished product, reducing the floor area of the equipment and making the overall structure of the machine more compact.

[0077] Specifically, the workbench 10 has a debris collection hole 11, which is provided below the first clamping mechanism 343 and the second clamping mechanism 353. The debris collection hole 11 is a funnel-shaped sinking hole, so that the machining debris gathers at the bottom of the debris collection hole 11 along the inner wall of the debris collection hole 11.

[0078] Specifically, the debris generated during workpiece machining falls into the debris collection hole 11 on the workbench 10 and slides down along the inner wall of the debris collection hole 11 to the bottom of the debris collection hole 11, improving the recovery rate of the debris.

[0079] And, please refer to Figure 11 , which shows an automatic machining method for a double five-axis CNC turning and milling compound machining equipment based on the jewelry industry. It is a complete automatic production and machining process for automatically machining a bar stock into a finished product using the double five-axis CNC turning and milling compound machining equipment for the jewelry industry as described above, including the following specific steps:

[0080] Step S10, insert the bar stock into the first clamping mechanism 343, so that the length of the bar stock protruding from the first clamping mechanism 343 is greater than the width of the finished product.

[0081] Step S11, the first B-axis module 341 drives the first C-axis module 342 to rotate, making the fixture mounting platform 354 face upward.

[0082] Step S12, the Z-axis module 33 drives the fixture replacement device 70 to move above the fixture mounting platform 354.

[0083] Step S13, the third pressing cylinder 71 drives the fixture jaws 72 and the blowing head 74 to move downward. After the fixture jaws 72 grasp the second clamping fixture 355 corresponding to the diameter of the bar stock, the third pressing cylinder 71 drives the fixture jaws 72 and the blowing head 74 to move upward.

[0084] Step S14, the hair dryer 74 blows air towards the second clamping fixture 355 grasped by the fixture jaws 72 to clean the metal debris on the second clamping fixture 355.

[0085] Step S15, the first B-axis module 341 drives the first C-axis module 342 to rotate, making the second clamping mechanism 353 face upwards.

[0086] Step S16, the third pressing cylinder 71 drives the fixture jaws 72 and the hair dryer 74 to move downwards, and installs the second clamping fixture 355 on the second clamping mechanism 353.

[0087] Step S17, the Z-axis module 33 drives the fixture replacement device 70 to move to a safe position.

[0088] Specifically, according to the diameter of the bar stock, the corresponding second clamping fixture 355 is selected.

[0089] Step S20, the compound machining spindle 40 performs turning and milling compound machining on the first end face of the bar stock on the first clamping mechanism 343.

[0090] Step S30, the second clamping mechanism 353 grasps the machined end face of the bar stock, and the compound machining spindle 40 turns the finished part away from the bar stock.

[0091] Step S31, the first B-axis module 341 drives the first C-axis module 342 to rotate, and the second B-axis module 351 drives the second C-axis module 352 to rotate, making the first clamping mechanism 343 and the second clamping mechanism 353 arranged opposite to each other.

[0092] Step S32, the second B-axis horizontal movement module 36 drives the second B-axis module 351 and the second C-axis module 352 to approach the first B-axis module 341 and the first C-axis module 342.

[0093] Step S33, the second clamping fixture 355 tightly holds the machined first end face.

[0094] Step S34, the compound machining spindle 40 uses a turning tool to cut off a finished part of a predetermined length from the bar stock.

[0095] Step S35, the second B-axis horizontal movement module 36 drives the second B-axis module 351 and the second C-axis module 352 to move away from the first B-axis module 341 and the first C-axis module 342.

[0096] Step S36, the second B-axis module 351 drives the second C-axis module 352 to rotate, making the second clamping fixture 355 and the finished part to be machined face upwards.

[0097] Step S40, the compound machining spindle 40 performs turning and milling compound machining on the second end face of the finished part on the second clamping mechanism 353.

[0098] Step S50, the picking device 60 grabs the processed finished product from the second clamping mechanism 353.

[0099] Step S60, when the composite machining spindle 40 replaces the machining tool 41, the picking device 60 simultaneously places the finished product into the finished product collection box 90.

[0100] Step S70, check whether the length of the bar stock protruding from the first clamping mechanism 343 is greater than the width of the finished product. If not, the feeding device 50 withdraws the bar stock from the first clamping mechanism 343 by a predetermined length, and then turns to Step S20; if so, directly turn to Step S20.

[0101] Step S80, check whether the length of the bar stock passing through the first clamping mechanism 343 is greater than the width of the finished product. If not, the processing flow ends; if so, turn to Step S20.

[0102] In the above double five-axis CNC turning and milling composite machining equipment 100 and automatic machining method for the jewelry industry, the bar stock is clamped on the first clamping mechanism 343, and the composite machining spindle 40 performs turning and milling composite machining on the first end face of the bar stock. After the machining of the first end face is completed, the second clamping mechanism 353 clamps the first end face of the bar stock, and the composite machining spindle 40 cuts it according to the predetermined width of the finished product. The second clamping mechanism 353 makes the cut second end face face upward, and the composite machining spindle 40 performs composite machining on the second end face until the finished product is machined. The picking device 60 removes the machined finished product and places it in the finished product collection box 90. The feeding device 50 withdraws the bar stock on the first clamping mechanism 343 by a predetermined length, and the composite machining spindle 40 starts the turning and milling composite machining of the second finished product until the entire bar stock is machined. No manual intervention is required during the entire production process, which improves the production efficiency, improves the working efficiency of the CNC turning and milling composite machining equipment, and reduces the cost. The structure of the present invention is simple, easy to implement, low in cost, and convenient for popularization.

[0103] It should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A dual five-axis CNC turning and milling composite processing equipment for the jewelry industry, used to process bar blanks into multiple finished parts, characterized in that: The CNC dual five-axis machining center comprises a composite machining spindle, a feeding device, a piece removal device, and a fixture replacement device. The composite machining spindle is equipped with a machining tool. The CNC dual five-axis machining center comprises a first clamping mechanism and a second clamping mechanism arranged in parallel. The first clamping mechanism is used to fix and place a bar blank, and the second clamping mechanism is used to fix and place a finished part. After the composite machining spindle processes the first end face of the bar blank on the first clamping mechanism, the finished part is removed from the bar blank. The composite machining spindle then processes the second end face of the finished part on the second clamping mechanism. After the machining is completed, the piece removal device removes the processed finished part from the second clamping mechanism. Wherein, the CNC dual five-axis machining center device further includes an X-axis module, a Y-axis module and a Z-axis module, the X-axis module and the Z-axis module are vertically arranged on a vertical plane, and the X-axis module, the Y-axis module and the Z-axis module are arranged perpendicular to each other in pairs; the compound processing spindle, the feeding device, the picking device and the fixture changing device are arranged in parallel on the Z-axis module, the feeding device, the picking device and the fixture are respectively arranged on both sides of the compound processing spindle, the X-axis module drives the compound processing spindle, the feeding device, the picking device and the fixture changing device to move horizontally, and the Z-axis module drives the compound processing spindle, the feeding device, the picking device and the fixture changing device to move vertically; The Y-axis module includes a Y-axis servo motor, a Y-axis ball screw, a Y-axis linear guide and a Y-axis movable block. The Y-axis servo motor drives the Y-axis movable block to move along the Y-axis ball screw on the Y-axis linear guide; a first B-axis module and a second B-axis module are arranged in parallel on the Y-axis movable block, a second B-axis horizontal movement module is arranged below the second B-axis module, and the second B-axis horizontal movement module is used to drive the second B-axis module to move horizontally to adjust the distance between the second B-axis module and the first B-axis module; a first C-axis module is arranged at the output end of the first B-axis module, and the first B-axis module drives The first C-axis module rotates, and the first clamping mechanism is provided at the output end of the first C-axis module. The first C-axis module drives the first clamping mechanism to rotate. The first clamping mechanism is provided with a first clamping jig, and the strip blank is passed through the first clamping jig; the output end of the second B-axis module is provided with a second C-axis module, and the second B-axis module drives the second C-axis module to rotate. The second clamping mechanism is provided at the output end of the second C-axis module. The second C-axis module drives the second clamping mechanism to rotate. The second clamping mechanism is provided with a second clamping jig, and the finished product is sleeved on the second clamping jig; The feeding device includes a first pressing cylinder, a feeding jaw and a feeding cylinder. The first pressing cylinder is used to drive the feeding jaw to move up and down, and the feeding cylinder is used to drive the feeding jaw to contract or expand to grip or loosen the strip blank.

2. The dual five-axis CNC turning and milling composite processing equipment for the jewelry industry according to claim 1, characterized in that: The second C-axis module is provided with a fixture mounting platform, and the fixture mounting platform is provided with multiple second clamping fixtures of different sizes, and multiple second clamping fixtures of different sizes are arranged on the second clamping mechanism to accommodate finished parts of different sizes; the second clamping fixture has multiple finished part jaws, and the multiple finished part jaws are arranged in a circle, and there is a gap between two adjacent finished part jaws, and each finished part jaw is elastic; the fixture replacement device includes a third downward pressure cylinder, multiple fixture jaws, a fixture cylinder and a blowing head, and the fixture cylinder is used to drive the multiple contraction or expansion to grasp or release the second clamping fixture; the blowing head is provided between the multiple fixture jaws, and the blowing head is used to clean debris on the second clamping fixture; the third downward pressure cylinder is used to drive the fixture jaws and the blowing head to move up and down.

3. The dual five-axis CNC turning and milling composite processing equipment for the jewelry industry as claimed in claim 2, characterized in that: The picking device includes a second downward pressure cylinder, multiple picking claws, a picking cylinder and a picking fixing part. The width of each picking claw is smaller than the width of the gap between the finished part claws, and the distance between two adjacent picking claws corresponds to the gap between the finished part claws; the picking cylinder is used to drive the picking claws to contract or expand to grab the finished part; the picking fixing part is arranged at the center of the multiple picking claws, and the picking fixing part is elastic to avoid damaging the finished part; the second downward pressure cylinder is used to drive the picking claws and the picking fixing part to move up and down.

4. The dual five-axis CNC turning and milling composite processing equipment for the jewelry industry according to claim 1, characterized in that: It also includes a tool magazine assembly and a finished parts collection box. The tool magazine assembly is installed on the column of the equipment bracket. The tool magazine assembly includes a tool magazine servo motor, a cam divider, a tool magazine base plate and a rotating cutter disc. The rotating cutter disc and the tool magazine servo motor and the cam divider are respectively installed on both sides of the tool magazine base plate. The rotating cutter disc rotates under the drive of the tool magazine servo motor. The cam divider is used to control the rotation angle of the rotating cutter disc. A plurality of claws are installed on the rotating cutter disc. The plurality of claws are evenly arranged on the same circumference with the center of the rotating cutter disc as the center of the circle, and the processing tool is installed on the claws; the finished parts collection box is arranged on the back of the tool magazine assembly. The finished parts collection box has an inclined top surface, and the finished parts collection box is used to place finished parts.

5. An automatic processing method based on a dual five-axis CNC turning and milling compound processing equipment, for automatically processing a bar blank into a finished product using the dual five-axis CNC turning and milling compound processing equipment for the jewelry industry as described in any one of claims 1 to 4, characterized in that: The specific steps include: Inserting the strip blank into the first clamping mechanism so that the length of the strip blank protruding from the first clamping mechanism is greater than the width of the finished product; The composite processing spindle performs a turning-milling composite processing on the first end surface of the strip blank on the first clamping mechanism; The second clamping mechanism grasps the machined end face of the bar blank, and the composite machining spindle turns the finished part away from the bar blank; The compound processing spindle performs turning and milling compound processing on the second end face of the finished part on the second clamping mechanism; The picking device grabs the finished product from the second clamping mechanism; When the composite machining spindle changes the machining tool, the pick-up device simultaneously places the finished parts into the finished parts collection box; Check whether the length of the strip blank protruding from the first clamping mechanism is greater than the width of the finished part. If not, the feeding device pulls the strip blank out of the first clamping mechanism by a predetermined length, and then the composite processing spindle starts composite processing on the first end face.

6. The automatic processing method based on dual five-axis CNC turning and milling composite processing equipment according to claim 5, characterized in that: The specific steps of the second clamping mechanism gripping the machined end face of the bar blank and the composite machining spindle turning the finished part away from the bar blank include: The first B-axis module drives the first C-axis module to rotate, and the second B-axis module drives the second C-axis module to rotate, so that the first clamping mechanism and the second clamping mechanism are arranged opposite to each other; The second B-axis horizontal moving module drives the second B-axis module and the second C-axis module to move closer to the first B-axis module and the first C-axis module; The second clamping fixture grips the processed first end surface; The composite machining spindle uses a turning tool to cut the finished parts of predetermined length from the bar blank; The second B-axis horizontal moving module drives the second B-axis module and the second C-axis module away from the first B-axis module and the first C-axis module; The second B-axis module drives the second C-axis module to rotate, so that the second clamping fixture and the finished workpiece to be processed face upward.

7. The automatic processing method based on dual five-axis CNC turning and milling composite processing equipment according to claim 5, characterized in that: It also includes the specific steps for replacing the second clamping fixture when processing bar blanks of different diameters: The first B-axis module drives the first C-axis module to rotate so that the fixture installation platform faces upward; The Z-axis module drives the fixture replacement device to move above the fixture installation platform; The third downward pressure cylinder drives the clamp jaws and the blowing head to move downward. After the clamp jaws grab the second clamping fixture corresponding to the diameter of the strip blank, the third downward pressure cylinder drives the clamp jaws and the blowing head to move upward. The air blowing head blows air toward the second clamping fixture grasped by the clamp claws to clean the metal debris on the second clamping fixture; The first B-axis module drives the first C-axis module to rotate, so that the second clamping mechanism faces upward; The third downward pressure cylinder drives the clamping jaws and the blowing head to move downward, and the second clamping fixture is installed on the second clamping mechanism; The Z-axis module drives the fixture changing device to a safe position.

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