Milling and grinding machine tool for metal machining and surface machining method for gold ornaments

Abstract

The invention relates to the technical field of milling and grinding machine tools, and discloses a milling and grinding machine tool for metal machining and a surface machining method of gold ornaments.Through cooperation of a positioning mechanism, a clamping assembly and an adjusting assembly, when a workpiece is machined, the workpiece is placed in the opened clamping assembly, and a driving rod is rotated to drive the clamping assembly to rotate; the movable frame is driven to drive the positioning plate on the movable frame to move towards the direction of the fixed frame, so that the workpiece is clamped and fixed, a to-be-machined face on the workpiece faces the milling and grinding assembly to be milled and ground, and after the machined face is machined, through cooperation of an adjusting rod and a transmission rod of the adjusting assembly, the workpiece can be accurately machined. The main push rod and the auxiliary push rod are driven to do reverse motion in the vertical direction, so that the clamping assembly drives the workpiece to rotate, the next to-be-machined face of the workpiece faces the milling and grinding assembly, the clamping frequency of the workpiece in the machining process is reduced, the machining progress of the workpiece is improved, and the product quality is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of milling and grinding machines, and specifically to a milling and grinding machine for metal processing and a method for surface processing of gold jewelry. Background Art

[0002] A milling and grinding machine is a processing device that combines milling and grinding functions. It can complete multiple processing tasks in one clamping, significantly improving the processing efficiency. A milling and grinding machine is used in the production process of gold jewelry to process the surface of the jewelry. In order to better display the creativity and skills of designers and enhance the artistic value of the jewelry, the jewelry is often designed into a complex curved shape; In the prior art, most milling and grinding machines clamp and fix the workpiece by pneumatic clamps against both ends of the workpiece, making the surface to be processed of the workpiece face the processing tool. Due to the design of the complex curved surface, there are multiple surfaces to be processed on the workpiece. In order to perform milling and grinding processing on these surfaces to be processed, the workpiece needs to be clamped multiple times to adjust the surface to be processed of the workpiece. However, multiple clamping operations will reduce the processing accuracy of the workpiece, thereby affecting the quality of the product. Summary of the Invention

[0003] Aiming at the deficiencies of the prior art, the present invention provides a milling and grinding machine for metal processing and a method for surface processing of gold jewelry to overcome the above-mentioned technical problems existing in the related prior art.

[0004] To solve the above technical problems, the present invention provides the following technical solutions: A milling and grinding machine tool for metal processing and a surface processing method for gold jewelry, including a main body and a two-dimensional moving platform installed on the base of the main body, and a processing table is connected to the two-dimensional moving platform: A milling and grinding assembly, a positioning mechanism, and an adjusting assembly are provided on the main body. The milling and grinding assembly is installed on the main body and is used to process the workpiece on the positioning mechanism. The positioning mechanism includes a fixing plate, a moving frame, a fixing frame, and a clamping assembly. The fixing plate is assembled on the processing table, and a driving rod is connected to the fixing plate. The moving frame and the fixing frame are sequentially arranged on the fixing plate, and the moving frame is connected to the driving rod. The clamping assembly includes a positioning plate and clamping claws. The two positioning plates are respectively installed on the moving frame and the fixing frame, and the two positioning plates are connected to each other. Two clamping claws are installed on each positioning plate. By rotating the driving rod, the moving frame can be driven to move towards the fixing frame, so that the clamping assembly clamps the workpiece. The adjusting assembly includes a main push rod, a secondary push rod, an adjusting rod, and a transmission rod. The main push rod and the secondary push rod are respectively connected to both sides of the bottom of the positioning plate located on the fixing frame. The adjusting rod and the transmission rod are both connected to the fixing plate. The adjusting rod and the transmission rod cooperate with the main push rod and the secondary push rod respectively. By rotating the adjusting rod to drive the transmission rod, the main push rod and the secondary push rod are synchronously driven, so that the clamping assembly drives the workpiece to rotate.

[0005] Preferably, the fixing plate is fixedly installed on the processing table. Guide rails are fixedly connected to both sides of the fixing plate. Fixed seats are fixedly installed at both ends of the fixing plate. The fixed seats are located between the two guide rails. A notch is formed on the fixing plate. The notch is located between the guide rails and the fixed seats and on the side of the fixing plate close to the milling and grinding assembly.

[0006] Preferably, the driving rod is rotatably installed on the fixed seat. Threads are formed on the driving rod. The moving frame is slidably installed on the guide rail, and the bottom of the moving frame is assembled on the threaded section of the driving rod through a threaded sleeve. The fixing frame is fixedly installed at one end of the fixing plate close to the milling and grinding assembly. Bearing seats are fixedly installed on both the fixing frame and the moving frame.

[0007] Preferably, the positioning plate is in a U shape. The two positioning plates are respectively rotatably connected to the bearing seats of the fixed frame and the moving frame through rotating shafts. Limiting grooves and guiding grooves are formed in the positioning plate. The guiding grooves are distributed on both sides of the limiting grooves. A main connecting rod is fixedly connected to the positioning plate on the moving frame, and a sub-connecting rod is fixedly connected to the other positioning plate. The sub-connecting rod is slidably connected to the main connecting rod, and a supporting plate is fixedly connected to the lower side of the other positioning plate. Two connecting seats are symmetrically and fixedly connected to the bottom of the supporting plate.

[0008] Preferably, a limiting slider is fixedly connected to one side of the clamping jaw facing the limiting groove. The limiting slider is slidably installed in the limiting groove. A guide rod is fixedly connected to one side of the clamping jaw facing the guiding groove. The guide rod is slidably installed in the guiding groove. A supporting spring is sleeved on the guide rod. Two ends of the supporting spring respectively abut against the outer side of the clamping jaw and the side wall of the positioning plate.

[0009] Preferably, the upper ends of the main push rod and the sub-push rod are respectively rotatably connected to one of the connecting seats. The lower ends of the main push rod and the sub-push rod are inserted into the notch. Rack teeth are fixedly connected to one side of the main push rod facing the moving frame and one side of the sub-push rod facing the fixed frame.

[0010] Preferably, the adjusting assembly further includes a mounting seat. The two mounting seats are symmetrically and fixedly installed on both sides of the fixing plate. The adjusting rod and the transmission rod are sequentially rotatably installed on the mounting seat. Driving gears and driven gears are sequentially and coaxially fixedly connected to the adjusting rod and the transmission rod. The driving gears on the adjusting rod and the transmission rod are respectively meshed with the rack teeth on the main push rod and the sub-push rod. The driven gears on the adjusting rod and the transmission rod are located outside the mounting seat. A transmission gear is rotatably installed on the mounting seat. The teeth on both sides of the transmission gear are respectively meshed with the two driven gears.

[0011] Preferably, two storage grooves are formed in the processing table. The storage grooves correspond to the notches. The lower ends of the main push rod and the sub-push rod pass through the notches and are stored in the storage grooves. A slide rail is fixedly installed on the main body. A driving motor is fixedly installed on the top of the main body. A lead screw is also rotatably installed on the main body. The lead screw is coaxially and fixedly connected to the output shaft of the driving motor.

[0012] Preferably, the milling assembly includes a mounting frame, which is slidably mounted on the slide rail, and the mounting frame is threadedly assembled on the screw rod on the side facing the main body, a motor is fixedly mounted on the top of the other side of the mounting frame, a tool head is rotatably mounted on the mounting frame, the upper end of the tool head is fixedly connected to the output shaft of the motor, and a processing tool is detachably mounted on the lower end of the tool head.

[0013] The invention also provides a surface processing method for gold ornaments, which uses a milling machine tool for metal processing.

[0014] Compared with the prior art, the present invention provides a metal processing milling machine and a surface processing method for gold jewelry, which have the following beneficial effects: 1. The metal processing milling and grinding machine and the surface processing method of gold jewelry, through the cooperation of the positioning mechanism, the clamping assembly and the adjusting assembly, when processing the workpiece, the workpiece is placed in the opened clamping assembly, and the driving rod is rotated to drive the movable frame to move with the positioning plate thereon toward the fixed frame, so that the workpiece is clamped and fixed, so that a to-be-processed surface on the workpiece faces the milling and grinding assembly, and the milling and grinding processing is performed. After the processing of the processing surface is completed, the adjusting rod and the transmission rod of the adjusting assembly can be cooperated to drive the main push rod and the auxiliary push rod to make reverse movements in the vertical direction, so that the clamping assembly drives the workpiece to rotate, and the next to-be-processed surface of the workpiece faces the milling and grinding assembly, thereby reducing the number of clamping times of the workpiece during the processing process, thereby improving the processing accuracy of the workpiece and ensuring the quality of the product.

[0015] 2. The metal processing milling and grinding machine and the surface processing method of gold jewelry, through the setting of the clamping claws, when the two positioning plates abut against the two ends of the workpiece, the workpiece will open the closed clamping claws, so that the clamping claws are clamped on the outside of the two ends of the workpiece with the cooperation of the guide rod, the limit slider and the support spring, so that the ends and sides of the workpiece are clamped, the clamping and fixing ability of the clamping assembly is improved, and the workpiece can remain stable during processing, thereby further improving the processing accuracy of the milling and grinding machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the main structure of the present invention; Figure 2 It is a schematic diagram of the internal structure of the positioning plate of the present invention; Figure 3 for Figure 2 A local enlarged structural schematic diagram; Figure 4 It is a schematic diagram of the planar structure of the milling and grinding assembly of the present invention; Figure 5 It is a schematic diagram of the side structure of the processing table of the present invention; Figure 6 Schematic side view structure of the positioning mechanism of the present invention; Figure 7 is Figure 6 Schematic enlarged partial structure at position B of; Figure 8 Schematic diagram of the positional relationship between the positioning mechanism of the present invention and the components of the processing table.

[0017] In the figure: 1, main body; 11, two-dimensional moving platform; 12, processing table; 121, storage groove; 13, slide rail; 14, drive motor; 15, lead screw; 2, milling and grinding assembly; 21, mounting bracket; 22, motor; 23, tool head; 24, processing tool; 3, positioning mechanism; 31, fixing plate; 311, notch; 32, guide rail; 33, fixed seat; 34, drive rod; 35, moving frame; 36, fixed frame; 37, bearing seat; 4, clamping assembly; 41, positioning plate; 411, limiting groove; 412, guiding groove; 413, main connecting rod; 414, sub-connecting rod; 415, supporting plate; 416, connecting seat; 42, clamping jaw; 421, limiting slider; 422, guide rod; 43, supporting spring; 5, adjusting assembly; 51, main push rod; 52, sub-push rod; 53, rack; 54, mounting seat; 55, adjusting rod; 56, transmission rod; 57, driving gear; 58, driven gear; 59, transmission gear. Specific embodiments

[0018] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0019] Embodiment 1 Please refer to Figures 1-8, a milling and grinding machine tool for metal processing and a surface processing method for gold ornaments, comprising a main body 1 and a two-dimensional moving platform 11 installed on the base of the main body 1. A processing table 12 is connected to the two-dimensional moving platform 11. A milling and grinding assembly 2, a positioning mechanism 3 and an adjusting assembly 5 are arranged on the main body 1. The milling and grinding assembly 2 is installed on the main body 1 and is used to process the workpiece on the positioning mechanism 3. The positioning mechanism 3 includes a fixing plate 31, a moving frame 35, a fixing frame 36 and a clamping assembly 4. The fixing plate 31 is assembled on the processing table 12. A driving rod 34 is connected to the fixing plate 31. The moving frame 35 and the fixing frame 36 are sequentially arranged on the fixing plate 31, and the moving frame 35 is connected to the driving rod 34. The clamping assembly 4 includes a positioning plate 41 and clamping claws 42. The two positioning plates 41 are respectively installed on the moving frame 35 and the fixing frame 36, and the two positioning plates 41 are connected to each other. Two clamping claws 42 are installed on each positioning plate 41. By rotating the driving rod 34, the moving frame 35 can be driven to move towards the fixing frame 36, so that the clamping assembly 4 clamps the workpiece. The adjusting assembly 5 includes a main push rod 51, a sub push rod 52, an adjusting rod 55 and a transmission rod 56. The main push rod 51 and the sub push rod 52 are respectively connected to both sides of the bottom of the positioning plate 41 located on the fixing frame 36. The adjusting rod 55 and the transmission rod 56 are both connected to the fixing plate 31. The adjusting rod 55 and the transmission rod 56 are respectively matched with the main push rod 51 and the sub push rod 52. By rotating the adjusting rod 55 to drive the transmission rod 56, the main push rod 51 and the sub push rod 52 are synchronously driven, so that the clamping assembly 4 drives the workpiece to rotate.

[0020] Among them, during use, first place the workpiece to be processed on the positioning mechanism 3. Initially, the moving frame 35 on the positioning mechanism 3 is far from the fixed frame 36 and is located at the other end of the fixed plate 31. The two positioning plates 41 are in an open state, and the clamping claws 42 on the positioning plates 41 are in a closed state. The side of the clamping claw 42 facing the workpiece is beveled. After placing the workpiece, by reversely rotating the driving rod 34, the moving frame 35 moves closer to the fixed frame 36. The two sides of the end of the workpiece will contact the bevel of the closed clamping claw 42. As the moving frame 35 continues to move, the positioning plate 41 on the moving frame 35 will push the workpiece towards the fixed frame 36. During this process, the workpiece moves along the bevel of the clamping claw 42 towards the inside of the closed clamping claw 42, thereby expanding the closed clamping claw 42. Finally, the two ends of the workpiece respectively abut against the two positioning plates 41, and at the same time, the clamping claws 42 on the two positioning plates 41 respectively clamp on the outer sides of the two ends of the workpiece, thereby clamping and fixing the workpiece on the processing table 12, making one surface to be processed of the workpiece face the milling and grinding assembly 2. Subsequently, the two-dimensional moving platform 11 drives the processing table 12 to move under the milling and grinding assembly 2 under the drive of the motor, and cooperates with the milling and grinding assembly 2 to mill and grind the processing surface of the workpiece. When the processing of this surface of the workpiece is completed, the two-dimensional moving platform 11 and the milling and grinding assembly 2 pause working. The worker rotates the adjusting rod 55 of the adjusting assembly 5, so that the adjusting rod 55 drives the transmission rod 56 to rotate. The rotating adjusting rod 55 and the rotating transmission rod 56 synchronously drive the main push rod 51 and the auxiliary push rod 52 to move in the reverse direction, so that the two mounting plates drive the clamped workpiece to rotate, making the next surface to be processed face the milling and grinding assembly 2. After the adjustment is completed, the two-dimensional moving platform 11 and the milling and grinding assembly 2 continue to work to process the next processing surface of the workpiece. After the processing is completed, rotate the driving rod 34 forward to drive the moving frame 35 away from the fixed frame 36, so that the positioning plate 41 abutting against the end of the workpiece is disengaged. When the positioning plate 41 on the moving frame 35 is disengaged from the end of the workpiece, the clamping claws 42 clamping on both sides of the workpiece on this positioning plate 41 will return to the closed state. Then take out the workpiece from between the two clamping claws 42 of the positioning plate 41 on the fixed frame 36. After the workpiece is taken out, the two clamping claws 42 on this positioning plate 41 also return to the closed state, waiting for the next clamping.

[0021] The difference from the above embodiment is that the fixed plate 31 is fixedly installed on the processing table 12. Guide rails 32 are fixedly connected to both sides of the fixed plate 31. Fixed seats 33 are fixedly installed at both ends of the fixed plate 31. The fixed seats 33 are located between the two guide rails 32. A notch 311 is formed on the fixed plate 31. The notch 311 is between the guide rail 32 and the fixed seat 33 and is on the side of the fixed plate 31 close to the milling and grinding assembly 2.

[0022] The difference from the above embodiment is that the driving rod 34 is rotatably mounted on the fixed seat 33. Threads are provided on the driving rod 34. The moving frame 35 is slidably mounted on the guide rail 32, and the bottom of the moving frame 35 is assembled on the threaded section of the driving rod 34 through a threaded sleeve. The fixed frame 36 is fixedly mounted on one end of the fixed plate 31 close to the milling and grinding assembly 2. Bearing seats 37 are fixedly mounted on both the fixed frame 36 and the moving frame 35.

[0023] Among them, when it is necessary to clamp the workpiece, the driving rod 34 is rotated in the reverse direction, so that the driving rod 34 drives the moving frame 35 to slide on the guide rail 32 towards the fixed frame 36. After the clamping assembly 4 clamps and fixes the workpiece, the rotation of the driving rod 34 is stopped. When it is necessary to release the clamping of the workpiece, the driving rod 34 is rotated in the forward direction, so that the driving rod 34 drives the moving frame 35 to move away from the fixed frame 36. After the clamping assembly releases the clamping and fixing of the workpiece, the rotation of the driving rod 34 is stopped.

[0024] The difference from the above embodiment is that the positioning plate 41 is in a U shape. The two positioning plates 41 are respectively rotatably connected to the bearing seats 37 of the fixed frame 36 and the moving frame 35 through rotating shafts. A limiting groove 411 and a guiding groove 412 are provided on the positioning plate 41. The guiding grooves 412 are distributed on both sides of the limiting groove 411. A main connecting rod 413 is fixedly connected to the positioning plate 41 on the moving frame 35. A secondary connecting rod 414 is fixedly connected to the other positioning plate 41. The secondary connecting rod 414 is slidably connected to the main connecting rod 413. And a supporting plate 415 is fixedly connected to the lower side of the other positioning plate 41. Two connecting seats 416 are symmetrically and fixedly connected to the bottom of the supporting plate 415.

[0025] Among them, when placing the workpiece, the workpiece needs to be placed on the supporting plate 415 so that both ends of the workpiece face the two positioning plates 41 respectively. When the driving rod 34 drives the moving frame 35 to move on the guide rail 32, the main connecting rod 413 will move in the same direction as the moving frame 35 on the secondary connecting rod 414. When the adjusting assembly 5 drives the clamping assembly 4 to rotate, the two positioning plates 41 rotate synchronously under the cooperation of the main connecting rod 413 and the secondary connecting rod 414.

[0026] The difference from the above embodiment is that a limiting slider 421 is fixedly connected to the side of the clamping jaw 42 facing the limiting groove 411. The limiting slider 421 is slidably mounted in the limiting groove 411. A guide rod 422 is fixedly connected to the side of the clamping jaw 42 facing the guiding groove 412. The guide rod 422 is slidably mounted in the guiding groove 412. A supporting spring 43 is sleeved on the guide rod 422. The two ends of the supporting spring 43 respectively abut against the outer side of the clamping jaw 42 and the side wall of the positioning plate 41.

[0027] Among them, when the two positioning plates 41 respectively abut against both ends of the workpiece, the workpiece will be inserted into the clamping jaws 42 in the closed state. The clamping jaws 42 move outward toward the positioning plates 41 through the cooperation of the limit sliders 421 and the limit chutes. At the same time, the clamping jaws 42 push the guide rods 422 into the guide grooves 412 and compress the support springs 43, thereby opening the closed clamping jaws 42. At the same time, the compressed support springs 43 restore deformation, thereby pushing the clamping jaws 42 to clamp on the outside of the workpiece. When the moving frame 35 drives one of the positioning plates 41 away from the fixed frame 36, the positioning plate 41 releases the restraint on the workpiece. As the workpiece disengages from the clamping jaws 42, the support springs 43 that have restored deformation will push the clamping jaws 42 to close again and pull the guide rods 422 out of the guide grooves 412.

[0028] The difference from the above embodiment is that the upper ends of the main push rod 51 and the sub-push rod 52 are respectively rotatably connected to a connecting seat 416. The lower ends of the main push rod 51 and the sub-push rod 52 are inserted into the slot openings 311. A rack 53 is fixedly connected to one side of the main push rod 51 facing the moving frame 35 and one side of the sub-push rod 52 facing the fixed frame 36.

[0029] The difference from the above embodiment is that the adjusting assembly 5 further includes a mounting seat 54. The two mounting seats 54 are symmetrically and fixedly installed on both sides of the fixing plate 31. The adjusting rod 55 and the transmission rod 56 are sequentially rotatably installed on the mounting seat 54. Driving gears 57 and driven gears 58 are sequentially and coaxially fixedly connected to the adjusting rod 55 and the transmission rod 56. The driving gears 57 on the adjusting rod 55 and the transmission rod 56 are respectively meshed with the racks 53 on the main push rod 51 and the sub-push rod 52. The driven gears 58 on the adjusting rod 55 and the transmission rod 56 are located outside the mounting seat 54. A transmission gear 59 is rotatably installed on the mounting seat 54. The teeth on both sides of the transmission gear 59 are respectively meshed with the two driven gears 58.

[0030] Among them, initially, the tops of the main push rod 51 and the auxiliary push rod 52 are flush, so that the clamping assembly 4 is kept horizontal with the workbench. When adjustment is needed, by reversely rotating the adjusting rod 55, the adjusting rod 55 drives the main push rod 51 to move downward through the driving gear 57. At the same time, the rotating adjusting rod 55 drives the transmission gear 59 to rotate forward through the driven gear 58 thereon, so that the driven gear 58 on the other side of the transmission gear 59 drives the transmission rod 56 to rotate reversely, thereby enabling the transmission rod 56 to drive the auxiliary push rod 52 to move upward through the driving gear 57 thereon, causing the support plate 415 to drive the positioning plate 41 installed on the fixing frame 36 to rotate. At the same time, the positioning plate 41 on the fixing frame 36 drives another positioning plate 41 to rotate in the same direction through the cooperation of the auxiliary connecting rod 414 and the main connecting rod 413, so that the clamping assembly 4 rotates towards one side of the main body 1, or by positively rotating the adjusting rod 55, the adjusting rod 55 drives the main push rod 51 to move upward through the driving gear 57. At the same time, the rotating adjusting rod 55 drives the transmission gear 59 to rotate reversely through the driven gear 58 thereon, so that the driven gear 58 on the other side of the transmission gear 59 drives the transmission rod 56 to rotate forward, thereby enabling the transmission rod 56 to drive the auxiliary push rod 52 to move downward through the driving gear 57 thereon, causing the support plate 415 to drive the positioning plate 41 installed on the fixing frame 36 to rotate. At the same time, the positioning plate 41 on the fixing frame 36 drives another positioning plate 41 to rotate in the same direction through the cooperation of the auxiliary connecting rod 414 and the main connecting rod 413, so that the clamping assembly 4 rotates towards the other side of the main body 1.

[0031] The difference from the above embodiment is that two storage grooves 121 are formed in the processing table 12, the storage grooves 121 correspond to the notch openings 311, the lower ends of the main push rod 51 and the auxiliary push rod 52 pass through the notch openings 311 and are stored in the storage grooves 121. A slide rail 13 is fixedly installed on the main body 1, a driving motor 14 is fixedly installed on the top of the main body 1, and a lead screw 15 is rotatably installed on the main body 1. The lead screw 15 is fixedly connected coaxially with the output shaft of the driving motor 14.

[0032] Among them, when the main push rod 51 and the auxiliary push rod 52 move up and down, they will be received or extended from the storage groove 121 through the notch opening 311. During the processing, the driving motor 14 can drive the lead screw 15 to rotate forward and backward.

[0033] Embodiment 2 The difference from the above embodiment is that the milling and grinding assembly 2 includes a mounting frame 21. The mounting frame 21 is slidably installed on the slide rail 13, and one side of the mounting frame 21 facing the main body 1 is threadedly assembled on the lead screw 15. A motor 22 is fixedly installed on the top of the other side of the mounting frame 21. A cutter head 23 is rotatably installed on the mounting frame 21. The upper end of the cutter head 23 is fixedly connected to the output shaft of the motor 22, and a processing cutter 24 is detachably installed at the lower end of the cutter head 23.

[0034] Among them, when the lead screw 15 rotates in the reverse direction, it will drive the mounting bracket 21 to move downward along the slide rail 13, so that the processing tool 24 processes the workpiece on the positioning mechanism 3. The processing tool 24 mounted on the tool head 23 is a milling cutter or a grinding head. When the milling cutter is mounted on the tool head 23, the milling and grinding assembly 2 drives the milling cutter on the tool head 23 to rotate through the motor 22 to perform milling processing on the workpiece. After the milling processing is completed, the milling cutter is removed from the tool head 23, and the grinding head is replaced on the tool head 23, so that the tool head 23 drives the grinding head to rotate under the drive of the motor 22 to grind the surface of the milled workpiece.

[0035] The present invention also provides a surface processing method for gold ornaments, using a milling and grinding machine tool for metal processing.

[0036] Working principle: When in use, first place the workpiece to be processed on the positioning mechanism 3. Initially, the mobile frame 35 on the positioning mechanism 3 is away from the fixed frame 36 and is located at the other end of the fixed plate 31. The two positioning plates 41 are open, and the clamping claws 42 on the positioning plate 41 are in a closed state, wherein the clamping claws 42 are inclined toward the side of the workpiece. After the workpiece is placed, the driving rod 34 is rotated in the reverse direction to make the mobile frame 35 approach the fixed frame 36. The two sides of the end of the workpiece will contact the inclined surface of the clamping claws 42 in the closed state. As the mobile frame 35 continues to move, the workpiece is moved to the fixed frame 36. The positioning plate 41 on the movable frame 35 pushes the workpiece to move toward the fixed frame 36. During this process, the workpiece moves along the inclined surface of the clamping claw 42 toward the inside of the clamping claw 42 in the closed state, thereby opening the closed clamping claw 42. Finally, the two ends of the workpiece are respectively in contact with the two positioning plates 41. At the same time, the clamping claws 42 on the two positioning plates 41 are respectively clamped on the outside of the two ends of the workpiece, thereby clamping and fixing the workpiece on the processing table 12, so that one of the workpiece to be processed faces the milling assembly 2. Then, the two-dimensional movable platform 11 drives the processing table 12 on the milling machine under the drive of the motor. The grinding assembly 2 moves down and cooperates with the milling and grinding assembly 2 to mill and grind the processing surface of the workpiece. When the processing of the surface of the workpiece is completed, the two-dimensional moving platform 11 and the milling and grinding assembly 2 stop working. The worker rotates the adjusting rod 55 of the adjusting assembly 5 to make the adjusting rod 55 drive the transmission rod 56 to rotate. The rotating adjusting rod 55 and the rotating transmission rod 56 synchronously drive the main push rod 51 and the auxiliary push rod 52 to move in the opposite direction, so that the two mounting plates rotate with the clamped workpiece, and the next surface to be processed is facing the milling and grinding assembly 2. After the adjustment is completed, the two-dimensional moving platform 11 and the milling and grinding assembly 2 stop working. Part 2 continues to work and processes the next processing surface of the workpiece. After completing the processing, the driving rod 34 is rotated forward again to drive the movable frame 35 away from the fixed frame 36, so that the positioning plate 41 that abuts against the end of the workpiece is disengaged. When the positioning plate 41 on the movable frame 35 is disengaged from the end of the workpiece, the clamping claws 42 on the positioning plate 41 that clamps on both sides of the workpiece will return to the closed state, and then the workpiece is taken out from between the two clamping claws 42 of the positioning plate 41 on the fixed frame 36. After the workpiece is taken out, the two clamping claws 42 on the positioning plate 41 also return to the closed state, waiting for the next clamping.

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A milling machine for metal processing, comprising a main body and a two-dimensional movable platform mounted on the main body base, wherein a processing table is connected to the two-dimensional movable platform, characterized in that: A milling and grinding assembly, a positioning mechanism and an adjusting assembly are provided on the main body. The milling and grinding assembly is installed on the main body and is used to process the workpiece on the positioning mechanism. The positioning mechanism includes a fixing plate, a moving frame, a fixing frame and a clamping assembly. The fixing plate is assembled on the processing table. A driving rod is connected to the fixing plate. The moving frame and the fixing frame are sequentially arranged on the fixing plate, and the moving frame is connected to the driving rod. The clamping assembly includes a positioning plate and clamping claws. The two positioning plates are respectively installed on the moving frame and the fixing frame, and the two positioning plates are connected to each other. Two clamping claws are installed on each positioning plate. By rotating the driving rod, the moving frame can be driven to move towards the fixing frame, so that the clamping assembly clamps the workpiece. The adjusting assembly includes a main push rod, a sub push rod, an adjusting rod and a transmission rod. The main push rod and the sub push rod are respectively connected to both sides of the bottom of the positioning plate located on the fixing frame. The adjusting rod and the transmission rod are both connected to the fixing plate. The adjusting rod and the transmission rod cooperate with the main push rod and the sub push rod respectively. By rotating the adjusting rod to drive the transmission rod, the main push rod and the sub push rod are synchronously driven, so that the clamping assembly drives the workpiece to rotate.

2. A metal processing milling machine according to claim 1, characterized in that: The fixing plate is fixedly installed on the processing table. Guide rails are fixedly connected to both sides of the fixing plate. Fixed seats are fixedly installed at both ends of the fixing plate. The fixed seats are located between the two guide rails. A notch is formed on the fixing plate. The notch is located between the guide rail and the fixed seat and on the side of the fixing plate close to the milling and grinding assembly.

3. A metal processing milling machine according to claim 2, characterized in that: The driving rod is rotatably installed on the fixed seat. Threads are provided on the driving rod. The moving frame is slidably installed on the guide rail, and the bottom of the moving frame is assembled on the threaded section of the driving rod through a threaded sleeve. The fixing frame is fixedly installed at one end of the fixing plate close to the milling and grinding assembly. Bearing seats are fixedly installed on both the fixing frame and the moving frame.

4. A metal processing milling machine according to claim 3, characterized in that: The positioning plate is in a U shape. The two positioning plates are respectively rotatably connected to the bearing seats on the fixing frame and the moving frame through rotating shafts. A limiting groove and a guiding groove are formed on the positioning plate. The guiding grooves are distributed on both sides of the limiting groove. A main connecting rod is fixedly connected to the positioning plate on the moving frame. A sub connecting rod is fixedly connected to the other positioning plate. The sub connecting rod is slidably connected to the main connecting rod. A supporting plate is fixedly connected to the lower side of the other positioning plate. Two connecting seats are symmetrically fixedly connected to the bottom of the supporting plate.

5. A metal processing milling machine according to claim 4, characterized in that: A limiting slider is fixedly connected to the side of the clamping claw facing the limiting groove. The limiting slider is slidably installed in the limiting groove. A guide rod is fixedly connected to the side of the clamping claw facing the guiding groove. The guide rod is slidably installed in the guiding groove. A supporting spring is sleeved on the guide rod. Both ends of the supporting spring respectively abut against the outside of the clamping claw and the side wall of the positioning plate.

6. A metal processing milling machine according to claim 5, characterized in that: The upper ends of the main push rod and the auxiliary push rod are rotatably connected to the connecting seat respectively, and the lower ends of the main push rod and the auxiliary push rod are inserted into the slot. A rack is fixedly connected to the side of the main push rod facing the movable frame and the side of the auxiliary push rod facing the fixed frame.

7. A metal processing milling machine according to claim 6, characterized in that: The adjusting assembly also includes a mounting seat, two of the mounting seats are symmetrically fixedly mounted on both sides of the fixing plate, the adjusting rod and the transmission rod are rotatably mounted on the mounting seat in turn, the adjusting rod and the transmission rod are coaxially fixedly connected with a driving gear and a driven gear in turn, the driving gears on the adjusting rod and the transmission rod are respectively meshed with the racks on the main push rod and the auxiliary push rod, the driven gears on the adjusting rod and the transmission rod are located on the outside of the mounting seat, and a transmission gear is rotatably mounted on the mounting seat, and the gear teeth on both sides of the transmission gear are respectively meshed with the two driven gears.

8. A metal processing milling machine according to claim 7, characterized in that: The processing table is provided with two receiving grooves, the receiving grooves correspond to the notches, the lower ends of the main push rod and the auxiliary push rod pass through the notches and are received in the receiving grooves, a slide rail is fixedly mounted on the main body, a driving motor is fixedly mounted on the top of the main body, a screw rod is also rotatably mounted on the main body, and the screw rod is coaxially fixedly connected to the output shaft of the driving motor.

9. A metal processing milling machine according to claim 8, characterized in that: The milling and grinding assembly includes a mounting frame, which is slidably mounted on the slide rail and is threadedly assembled on the screw rod on one side of the mounting frame facing the main body. A motor is fixedly mounted on the top of the other side of the mounting frame. A tool head is rotatably mounted on the mounting frame, the upper end of the tool head is fixedly connected to the output shaft of the motor, and a processing tool is detachably mounted on the lower end of the tool head.

10. A method for surface processing of gold ornaments, characterized in that: A metal processing milling machine tool as described in any one of claims 1 to 9 is used.

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