Bead turning machine with multi-station machining system and machining method

Abstract

The invention discloses a bead turning machine with a multi-station machining system and a machining method. The bead turning machine comprises a machine base, a cutter module, a clamp, a positioning assembly and a driving module. The cutter module is provided with a shaping cutter and a dividing cutter which are independently arranged and arranged on the two sides of the bead-connected bead blank respectively. The clamp is used for clamping and driving the string-stringing bead blank to rotate. The positioning assembly comprises a first positioning column and a second positioning column which are coaxial, the first positioning column is arranged in the cavity of the bead connecting bead blank in a penetrating mode, and the second positioning column can be inserted into or withdrawn from the interior of the bead body to be machined. The driving module drives the clamp and the positioning assembly to move synchronously, so that the bead body to be machined is switched between the shaping station and the cutting station, and outer surface shaping and cutting separation are completed in sequence. And after cutting, the second positioning column automatically withdraws the finished bead and is inserted into the next bead body to be processed. According to the invention, continuous and automatic processing of bead-connected bead blanks is realized, and the processing precision, the system rigidity and the production efficiency are effectively improved through internal supporting and positioning.

Description

Technical Field

[0001] This invention relates to the field of metal jewelry processing equipment, and in particular to a bead-making machine with a multi-station processing system and a processing method. Background Technology

[0002] In the field of metal jewelry manufacturing, positioning the beads during the processing is quite challenging. Common techniques typically involve first machining individual bead blanks using turning or milling, then individually clamping each blank and performing drilling and surface treatment. However, due to the unique shape of the beads, conventional clamping methods can easily lead to surface damage, positioning misalignment, or even clamping instability, ultimately affecting the final product's appearance quality and processing precision. Summary of the Invention

[0003] The main objective of this invention is to propose a bead-making machine and processing method with a multi-station processing system, which aims to solve the technical problem of bead positioning during the processing.

[0004] To achieve the above objectives, this invention proposes a bead-turning machine with a multi-station processing system, suitable for processing a series of bead blanks. The series of bead blanks are workpieces formed by stamping, with cylindrical beads connected sequentially. Each series of bead blanks has a cavity extending and penetrating along a first direction, which is parallel to the axis of the series of bead blanks. The bead-turning machine includes: Base; A cutting tool module is mounted on the machine base. The cutting tool module includes a shaping blade and a dividing blade that are independently arranged. The shaping blade and the dividing blade are spaced apart on both sides of the continuous bead blank along a second direction, which is perpendicular to the first direction. A clamp is configured to hold and drive the series of bead blanks to rotate about its axis. The positioning assembly includes a first positioning post and a second positioning post arranged coaxially. The first positioning post is configured to pass through the cavity and is located on the side of the bead body to be processed of the continuous bead blanks near the fixture. The second positioning post is configured to be inserted into or withdrawn from the interior of the bead body to be processed along the first direction. A drive module is connected to the fixture and the positioning component. The drive module is configured to drive the fixture and the positioning component to reciprocate synchronously along the second direction, so that the bead to be processed switches between a first processing position and a second processing position. When the bead to be processed is in the first processing position, the shaping blade can shape the outer surface of the bead to be processed. When the bead to be processed is in the second processing position, the dividing blade can cut the bead that has been shaped, so that the bead is separated from the string of bead blanks. After the dividing blade completes the cutting and separation of the bead, the second positioning post moves away from the first positioning post along the first direction to exit the bead. After the bead is separated from the second positioning post, the second positioning post moves towards the first positioning post and inserts into the interior of the next bead to be processed.

[0005] In some embodiments, the first positioning post has a concave hole at one end near the second positioning post, and the second positioning post has a convex shaft at one end near the first positioning post. The convex shaft is configured to be able to be inserted into or withdrawn from the concave hole.

[0006] In some embodiments, when the bead to be processed is located in the second processing position, the second positioning post moves away from the first positioning post along the first direction, so that the convex shaft disengages from the concave hole and forms a clearance space, the clearance space being configured to accommodate the dividing blade that cuts into the bead.

[0007] In some embodiments, the bead-making machine further includes a feeding assembly, a first driving device, and a second driving device. The feeding assembly includes a first claw tooth and a second claw tooth that are arranged opposite to each other and can move towards or away from each other. The first claw tooth and the second claw tooth are configured to clamp or release the portions between adjacent beads on the string of bead blanks. The first driving device is connected to the feeding assembly and is used to drive the first claw tooth and the second claw tooth to perform clamping or releasing actions. The second driving device is also connected to the feeding assembly and is used to drive the feeding assembly to reciprocate along the first direction.

[0008] In some embodiments, the bead to be processed further has a preparatory position, the preparatory position, the first processing position, and the second processing position are arranged at intervals along the second direction, and the preparatory position is located between the first processing position and the second processing position. When the bead to be processed is located in the preparatory position, the first driving device drives the first claw tooth and the second claw tooth to perform clamping or releasing actions, the second driving device drives the feeding assembly to reciprocate along the axial direction of the series of bead blanks, and the second positioning post inserts into or exits the interior of the bead to be processed.

[0009] In some embodiments, the bead-making machine further includes a base, the positioning component and the clamp are both mounted on the base, the positioning component is located on one side of the clamp along the axis of the string of bead blanks, and the base is driven by the driving module to reciprocate along the second direction so that the bead to be processed switches between the first processing position and the second processing position.

[0010] In some embodiments, the positioning component includes a third driving device and a guide member. The guide member is connected to the output end of the third driving device and has a guide hole. The second positioning post is inserted into the guide hole. The guide member is configured to be able to be driven by the third driving device to insert into or retract from the inner wall of the bead to be processed.

[0011] In some embodiments, the positioning assembly further includes a positioning member, which is mounted on the base and has a mounting hole coaxial with the guide hole. The positioning member has a reinforcing portion on the side away from the guide member, and the mounting hole passes through the reinforcing portion so that the second positioning post can extend from the guide member into the mounting hole and out of the reinforcing portion.

[0012] In some embodiments, after the dividing blade cuts the bead, the third driving device drives the guide to move the second positioning post away from the string of bead blanks until the bead abuts against the reinforcing part and detaches from the second positioning post.

[0013] A second aspect of the present invention also provides a processing method applicable to processing the string of bead blanks using a bead-turning machine described in any of the above embodiments, wherein the fixture has a first processing position, a preparatory position, and a second processing position along the second direction, and the driving module is configured to drive the bead to be processed to switch between the first processing position, the second processing position, and the preparatory position, and the processing method includes: Hollow tube structures are processed from raw materials, and the hollow tube structures are stamped to obtain the string of bead blanks; The string of bead blanks is loaded into the fixture, and the drive module is controlled to drive the fixture to move so that the bead to be processed is in the preparatory position; The drive module is controlled to move the bead to be processed from the preparatory position to the first processing position, the fixture is activated to drive the series of bead blanks to rotate, and the shaping cutter is controlled to cut and shape the outer surface of the bead to be processed. The drive module is controlled to move the bead to be processed from the first processing position to the second processing position, and the dividing blade is controlled to cut and separate the shaped bead from the string of bead blanks.

[0014] Compared with the prior art, the beneficial effects of the present invention are: In the technical solution of this invention, the first and second positioning posts in the positioning assembly work together to provide axial internal support and precise positioning for the beads to be processed. The reciprocating motion of the drive module enables automatic switching between the forming station and the dividing station for the beads to be processed. Thus, in a continuous process, the outer surface of the beads is first shaped, and then they are precisely cut and separated from a series of blanks. Throughout the process, the second positioning post can automatically withdraw from the processed beads after division and immediately provide internal support for the next bead to be processed, realizing automated connection of the processing cycle. Compared with the related technology's scheme of individually clamping and subsequently operating each bead blank, this invention effectively avoids the accumulation of positioning errors caused by multiple clamping, significantly improving the consistency and dimensional accuracy of bead processing. At the same time, the axial through-support method effectively suppresses processing vibration and improves system rigidity. In addition, the action of the second positioning post withdrawing from the bead after cutting allows the unloading of the processed beads to proceed smoothly without manual intervention and without interfering with the feed of the next bead to be processed, further improving production continuity and automation. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0016] Figure 1 This is a three-dimensional schematic diagram of a bead-carving machine according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the first-view structure of the bead-carving machine after some parts of the structure have been hidden in one embodiment of the present invention; Figure 3 This is a schematic diagram of the second-view structure of the bead-carving machine after the hidden part of the structure is shown in one embodiment of the present invention; Figure 4 In one embodiment of the present invention, the bead-carving machine is used... Figure 3 Enlarged view of point A in the middle section; Figure 5 This is a schematic diagram of the third-view structure of the bead-carving machine in one embodiment of the present invention after the hidden part of the structure is shown. Figure 6 In one embodiment of the present invention, the bead-carving machine is used... Figure 5 A magnified schematic diagram of a portion B in the middle; wherein, the fixture holding the string of bead blanks is located at the first processing position; Figure 7 This is a three-dimensional structural diagram of the feeding mechanism in one embodiment of the present invention; Figure 8 This is a schematic diagram of the working process of a dividing blade cutting a shaped bead in one embodiment of the present invention; Figure 9 This is a cross-sectional schematic diagram of a dividing blade cutting a shaped bead in one embodiment of the present invention; Figure 10 This is a schematic flowchart of a processing method according to an embodiment of the present invention; Figure 11 A finished bead body processed using the method of the present invention; Figure 12 This is another type of finished bead produced using the method described in this invention.

[0017] Explanation of icon numbers: Bead-making machine 10; Feeding mechanism 100; Base 110; clamp 120; positioning assembly 130; positioning post 131; first positioning post 131a; second positioning post 131b; third drive device 132; guide member 133; guide hole 1331; positioning member 134; mounting hole 1341; reinforcing part 1342; clearance space 135; Feeding assembly 140; first claw tooth 141; first clamping part 1411; second claw tooth 142; second clamping part 1421; First drive unit 150; Second drive unit 160; Drive module 170; Base 200; Tool module 300; Shaping tool 310; Dividing tool 320; String of bead blanks M; bead body m; finished bead body P; First direction X; second direction Y.

[0018] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0020] In the field of precious metal jewelry processing, especially in the manufacture of beads from highly ductile materials such as gold, traditional techniques face significant technological bottlenecks. Existing technologies typically employ a single-piece, separate processing method: first, the gold material is divided into individual blanks, which are then individually machined and drilled. This processing method has the following inherent drawbacks when handling beads of various geometric shapes: First, gold's high ductility makes it prone to plastic deformation during processing, making it difficult for traditional clamping systems to provide stable and reliable clamping and positioning. This is especially true when machining non-circular cross-section beads, where existing clamping mechanisms cannot achieve effective multi-directional constraints, resulting in machining datum drift and poor dimensional consistency.

[0021] Secondly, repeated clamping processes introduce cumulative positioning errors, and the softness of gold amplifies the impact of these errors. Traditional processes can often only complete simple contour machining, making it difficult to accurately shape complex curved surfaces, let alone achieve fine surface texture machining.

[0022] Furthermore, existing technologies lack effective shaping capabilities. Most traditional equipment is limited to basic grinding or polishing, and cannot perform complex shaping processes on the three-dimensional curved surfaces of beads. Especially for irregularly shaped beads that need to maintain specific geometric features, traditional processing methods often result in shape distortion or substandard surface quality.

[0023] Furthermore, there are efficiency bottlenecks in multi-process collaboration. Traditional processes require frequent transfer of beads between different equipment or workstations, which not only prolongs the production cycle but also affects the quality stability of the final product due to repeated repositioning. For high-value gold materials, these process defects directly translate into significant economic losses.

[0024] In view of this, refer to Figures 1 to 7 The first aspect of the present invention provides a bead-turning machine 10 with a multi-station processing system for processing a series of bead blanks M. The series of bead blanks M is a string of blanks formed integrally from metal material by a stamping process, consisting of multiple cylindrical beads m connected sequentially along their axial direction (i.e., a first direction X). The series of bead blanks M has a central cavity penetrating all the beads m along the first direction X. It is understood that the shape of the beads m on the series of bead blanks M can be circular, elliptical, polygonal, or irregular. For ease of description, the following embodiments use a circular bead m as an example.

[0025] The bead-turning machine 10 includes a base 200, a tool module 300, a fixture 120, a positioning assembly 130, and a drive module 170. The base 200 may be a welded steel frame with a mounting reference surface on its surface. The tool module 300 is fixedly mounted on the base 200. The tool module 300 includes a shaping tool 310 and a dividing tool 320 that are independently arranged and controlled. The fixture 120 is used to hold a series of bead blanks M, and the drive module 170 can drive the fixture 120 to move. The shaping tool 310 and the dividing tool 320 are spaced apart along a second direction Y and are located on two opposite sides of the held series of bead blanks M, respectively. The second direction Y is perpendicular to the first direction X. In some embodiments, the shaping tool 310 may be located on the upper side of the series of bead blanks M, and the dividing tool 320 may be located on the lower side. The drive module 170 is configured to drive the fixture 120 and the workpiece it holds to reciprocate along the second direction Y, and can switch between a preset first processing position and a second processing position. When the drive module 170 drives the fixture 120 to the first processing position, the bead m to be processed on the series of bead blanks M is aligned with the tip of the shaping cutter 310, at which point the outer surface shaping can be performed. When the drive module 170 drives the fixture 120 to the second processing position, the portion between the shaped bead m and the unshaped bead m on the series of bead blanks M is aligned with the cutting surface of the dividing cutter 320, thereby performing cutting and separation. The drive module 170 can adopt a linear motion mechanism of servo motor and ball screw, guided by precision guide rails to ensure position repeatability accuracy.

[0026] By separating the shaping and cutting processes at different stations and coordinating the precise positioning and switching of the fixture 120, this invention effectively avoids the problems of tool interference and sequential actions in a single station, significantly improving processing efficiency and accuracy. Driven by the drive module 170, the fixture 120 can quickly and accurately switch between the first and second processing positions, achieving continuous, high-cycle automated production. The coordinated control of each module ensures that each bead immediately enters the cutting process after shaping, guaranteeing shape and position consistency while significantly shortening the processing cycle.

[0027] Please see Figure 8 and Figure 9The positioning assembly 130 includes a first positioning post 131a and a second positioning post 131b coaxially arranged. The first positioning post 131a is configured to pass through the through cavity of the bead blank M. In the processing state, the first positioning post 131a is located on the side of the bead m to be processed on the bead blank M near the fixture 120. The second positioning post 131b is configured to reciprocate linearly along a first direction X to insert into or withdraw from the internal cavity of the bead m to be processed. When the second positioning post 131b is inserted, it provides radial support and positioning for the bead m to be processed. After the bead m is cut and separated, the second positioning post 131b moves away from the first positioning post 131a along the first direction X and withdraws from the interior of the just separated finished bead P. The finished bead P can automatically detach. Subsequently, the second positioning post 131b immediately moves towards the first positioning post 131a and inserts into the interior of the next bead m to be processed on the bead blank M, preparing for the next processing cycle.

[0028] It should be noted that, compared to the method of positioning beads for processing using a pin structure in related technologies, this application achieves radial constraint and support for each bead m in the series of bead blanks M by setting the first positioning post 131a in the through cavity of the series of bead blanks M and cooperating with the second positioning post 131b which can move relative to the first positioning post 131a. This effectively prevents the beads from shaking or shifting during processing and significantly improves positioning accuracy and stability. Moreover, the movable design of the second positioning post 131b relative to the first positioning post 131a allows the processed bead m to quickly detach from the positioning component 130 without interfering with the processing of subsequent beads m, ensuring a continuous and efficient processing flow.

[0029] In some embodiments, the first positioning post 131a has a recessed hole at one end near the second positioning post 131b, the recessed hole having an inclined wall surface. The second positioning post 131b has a protruding shaft at one end near the first positioning post 131a, the protruding shaft having an inclined surface that matches the inclined wall surface of the recessed hole. The protruding shaft is configured to be able to insert into or retract from the recessed hole. When the second positioning post 131b moves toward and inserts into the first positioning post 131a, the protruding shaft slides into the recessed hole along the inclined wall surface, forming a self-aligning fit to ensure coaxial positioning.

[0030] To facilitate the cutting of the shaped bead m by the dividing blade 320, in some embodiments, please refer to... Figure 9When the bead m to be processed is in the second processing position, the second positioning post 131b moves a distance away from the first positioning post 131a along the first direction X, so that the outer convex shaft is disengaged from the inner concave hole. Thus, a clearance space 135 is formed between the first positioning post 131a and the second positioning post 131b. The existence of this clearance space 135 can provide sufficient operating clearance for the cutting of the dividing blade 320 and avoid interference between the blade and the positioning assembly 130.

[0031] In some embodiments, the fixture 120 further has a preparatory position. This preparatory position is located between the first processing position and the second processing position in the second direction Y. Specifically, the first processing position, the preparatory position, and the second processing position are arranged sequentially from top to bottom along the second direction Y, with the first processing position and the second processing position located on opposite sides of the preparatory position, respectively. It should be noted that the second direction Y is not strictly limited to the vertical direction; the direction in which the first processing position and the second processing position are located on opposite sides of the string of bead blanks M can be considered as the second direction Y. In some embodiments, the second direction Y can also be any direction perpendicular to the first direction X. Thus, when the bead m to be processed is located in the first processing position with the fixture 120, and it is aligned with the shaping cutter 310 and undergoes shaping cutting, the debris will fall naturally due to gravity, avoiding accumulation and interference with processing.

[0032] The drive module 170 can be programmed and controlled to drive the fixture 120 to switch orderly between the first machining position, the preparatory position, and the second machining position. The preparatory position provides a safe and convenient operating space for auxiliary processes such as loading / unloading, positioning, and inspection, avoiding interference with the working tool. Parameters for different bead specifications are preset; when changing products, simply calling the corresponding program will automatically adjust the preparatory position to the optimal height.

[0033] In some embodiments, please refer to Figures 2 to 4 The bead-making machine 10 also includes a feeding assembly 140, a first drive device 150, and a second drive device 160. The feeding assembly 140 includes a first claw tooth 141 and a second claw tooth 142 arranged opposite to each other. The first claw tooth 141 and the second claw tooth 142 can move towards or away from each other under drive. The first claw tooth 141 and the second claw tooth 142 can extend into and clamp or release the portion between adjacent beads m on a string of bead blanks M, i.e., the "waist," rather than clamping the bead body itself, thereby avoiding leaving indentations on the processed or unprocessed surface. The first drive device 150 is connected to the feeding assembly 140 and is used to drive the first claw tooth 141 and the second claw tooth 142 to perform clamping or releasing actions. The second drive device 160 is also connected to the feeding assembly 140, but is used to drive the entire feeding assembly 140 to reciprocate along a first direction.

[0034] It is understood that any position between the first processing position and the second processing position can be regarded as a preparatory position. When any of the following actions occur: the first claw tooth 141 and the second claw tooth 142 perform clamping or loosening actions, the feeding assembly 140 performs the feeding operation of the series of bead blanks M, or the second positioning post 131b inserts into or exits the inner wall of the bead body m to be processed, it can be regarded as a preparatory position.

[0035] When the clamp 120 is positioned in the ready position by the drive module 170, the first drive device 150 and the second drive device 160 are activated to perform the loading operation. Specifically, the first drive device 150 drives the first claw tooth 141 and the second claw tooth 142 to move closer together to clamp the string of beads. The second drive device 160 drives the entire loading assembly 140 to push forward one bead spacing. Then, the first drive device 150 drives the first claw tooth 141 and the second claw tooth 142 to move away from each other to release the string of bead blanks M. The second drive device 160 drives the loading assembly 140 to return to its original position, thus completing one step loading cycle.

[0036] The first drive unit 150 and the second drive unit 160 can be selected from servo motors, stepper motors, or cylinders. In one embodiment, both are servo motors to achieve precise closed-loop control of position and speed. The loading assembly 140 may also integrate a force sensor to detect clamping force and prevent workpiece damage or slippage due to insufficient clamping force.

[0037] Please see Figure 4 In some embodiments, the first claw tooth 141 includes a first clamping portion 1411, and the second claw tooth 142 includes a second clamping portion 1421. The first clamping portion 1411 and the second clamping portion 1421 are disposed opposite to each other. For ease of understanding, along the direction from the first clamping portion 1411 to the second clamping portion 1421, the dimension of the first clamping portion 1411 gradually decreases in the direction parallel to the axis of the string of bead blanks M, forming a wedge-shaped structure. Similarly, along the direction from the second clamping portion 1421 to the first clamping portion 1411, the dimension of the second clamping portion 1421 also gradually decreases in the direction parallel to the axis of the string of bead blanks M, also forming a wedge-shaped structure. When the wedge-shaped first clamping portion 1411 and the second clamping portion 1421 clamp each other, they can adapt to bead blanks of different diameters, achieving adaptive clamping. In addition, this gradually thinning design allows the first claw tooth 141 and the second claw tooth 142 to easily insert into the narrow gap between adjacent beads m. In some embodiments, the working surfaces of the first clamping portion 1411 and the second clamping portion 1421 may be inlaid with polyurethane or engineering plastic pads, which increase friction to prevent slippage and protect the surface of the beads from scratches. The pads may be removable and easy to replace after wear.

[0038] In addition, in some embodiments, please refer to Figures 5 to 7The bead-making machine 10 also includes a base 110. A clamp 120 and a positioning assembly 130 are both fixedly mounted on the base 110. The positioning assembly 130 is located on the front side of the clamp 120 along the axis of the bead blanks M, i.e., on the side away from the clamping end of the clamp 120. The positioning assembly 130 is configured to position and support the overhanging end of the bead blanks M away from the clamp 120 to resist cutting forces during processing and prevent vibration and deformation.

[0039] The base 110 serves as an integrated platform and is connected to the drive module 170. The drive module 170 drives the base 110 to reciprocate along the second direction Y, thereby causing the fixture 120 and positioning component 130 mounted on it to rise and fall together, enabling the fixture 120 and the workpiece it holds to switch between a first processing position and a second processing position. It is understood that the loading component 140 is also mounted on the base 110, allowing the fixture 120 and positioning component 130 to rise and fall synchronously, reducing mechanical errors and attitude deviations during the movement process.

[0040] To automate the insertion and withdrawal of the second positioning pin 131b, the positioning assembly 130 also includes a third drive device 132 and a guide member 133. The third drive device 132 can be a cylinder or a linear motor. The guide member 133 is fixedly connected to the output end of the third drive device 132. A guide hole 1331 is machined on the guide member 133. The second positioning pin 131b is inserted into the guide hole 1331 with a clearance fit to ensure the straightness of the movement of the second positioning pin 131b.

[0041] The third drive device 132 drives the guide member 133 to move in a direction parallel to the axis of the continuous bead blank M. When support is needed, the third drive device 132 pushes the guide member 133 to move towards the workpiece, and the guide member 133 drives the second positioning post 131b forward together until the second positioning post 131b is inserted into the inner wall of the bead body m. After processing is completed, the third drive device 132 pulls the guide member 133 back, and the second positioning post 131b is then withdrawn from the workpiece.

[0042] The third drive unit 132 can be driven by a servo motor and a ball screw, and equipped with a position sensor. This allows for precise control of the insertion depth of the second positioning pin 131b, making it adaptable to balls with different inner hole depths, and providing force control upon contact with the workpiece to avoid impact.

[0043] To improve the bending strength and stability of the second positioning post 131b in its extended support state, the positioning assembly 130 also includes a positioning element 134. (See also...) Figure 2 , Figures 5 to 7The positioning element 134 is fixedly mounted on the base 110 and is located on the rear side of the guide element 133 along the retraction direction of the second positioning post 131b. The positioning element 134 is provided with a mounting hole 1341, which is strictly coaxial with the guide hole 1331 on the guide element 133.

[0044] The positioning member 134 has a reinforcing portion 1342 on the side away from the guide member 133. The mounting hole 1341 extends through the entire positioning member 134 and its reinforcing portion 1342. When the third drive device 132 drives the second positioning post 131b to fully extend to support the workpiece, the tail end of the second positioning post 131b is not only located in the guide hole 1331, but also continues to extend rearward, passing through the mounting hole 1341 and exiting through the reinforcing portion 1342. In this way, when the second positioning post 131b is in the extended working state, its tail end is supported by the positioning member 134, especially the reinforcing portion 1342, over a long distance with high rigidity, which greatly reduces the cantilever length and thus effectively suppresses machining vibration.

[0045] In addition, the reinforcement 1342 facilitates the precise cutting of the finished bead P. Specifically, after the dividing blade 320 completes the cutting of the shaped bead m, the third drive device 132 drives the guide 133 to move the second positioning post 131b away from the series of bead blanks M, until the finished bead P abuts against the reinforcement 1342 and detaches from the second positioning post 131b. During the movement of the second positioning post 131b, the finished bead P moves with it, thereby moving away from the cutting area and achieving effective separation of the finished product from the cutting debris.

[0046] In some embodiments, please refer to Figure 2 The shaping cutter 310 can be a multi-functional tool. Specifically, the shaping cutter 310 has a carrier for mounting multiple tools, including but not limited to a rotating cutter head, which has multiple workstations. Each workstation can independently mount a tool, such as a turning tool, milling cutter, or grinding head, to achieve multi-process continuous processing of the bead blank. For example, a rounding tool can be mounted for rough machining of a spherical contour, and then a finishing tool or grooving tool can be mounted for finishing or engraving patterns. By switching different tools, complex multi-process processing of beads can be completed on the same machine. The cutter head can be driven by a servo motor to achieve precise indexing and tool changing. The tools at each workstation are arranged according to the processing sequence, so that multiple processes such as turning, milling, grooving, and polishing can be completed in one clamping, effectively improving processing accuracy and efficiency. When a tool wears out, the corresponding workstation tool can be replaced individually, reducing maintenance costs. It is understood that the tools on the cutter head can adopt a symmetrical layout to balance the centrifugal force during rotation, reduce vibration, and improve processing stability.

[0047] To enable automatic tool switching for the multi-station shaping cutter 310, the tool module 300 also includes a fourth drive unit. This fourth drive unit is connected to the shaping cutter 310 and drives it to perform rotational or translational movements, thereby switching the desired tool to the working position. The fourth drive unit can be a servo motor and can be used in conjunction with a worm gear reducer or a precision cam divider to achieve accurate angular positioning and reliable locking.

[0048] The fourth drive unit can integrate position feedback and torque control functions. During tool changing, the system can detect whether the tool change is in place and automatically reverse to protect against jamming, preventing damage to the tool and mechanism.

[0049] The working process of the bead-making machine 10 is as follows: At the start of processing, the feeding assembly 140 pushes the series of bead blanks M in a step-by-step manner, so that a bead m to be processed arrives at the processing position, and the second positioning post 131b in the positioning assembly 130 extends into its inner wall to provide radial support. It should be noted that during the advancement of the series of bead blanks M, the clamp 120 releases the series of bead blanks M, and after the feeding assembly 140 delivers the bead m to be processed to the processing position, the clamp 120 re-clamps the series of bead blanks M.

[0050] Subsequently, the drive module 170 moves the base 110, bringing the bead m to the working position corresponding to the shaping cutter 310, i.e., the first processing position. At this point, in some embodiments, the shaping cutter 310 can be driven to rotate by a fourth drive device so that the cutter can cut the bead m. Simultaneously, the clamp 120 clamps the series of bead blanks M and drives them to rotate, changing the processing surface of the bead m so that it contacts the shaping cutter 310 along a predetermined trajectory. This allows for complex curved surfaces and multi-angle cutting, achieving the three-dimensional forming of the bead m.

[0051] It should be noted that during this cutting process, the base 110 drives the fixture 120 and the series of bead blanks M to feed towards the cutting tool, thereby controlling the cutting depth. After shaping, the base 110, driven by the drive module 170, moves the fixture 120, the series of bead blanks M, and the positioning component 130 to the second processing position, aligning the shaped bead m with the working position of the dividing blade 320. The fixture 120 continues to clamp the series of bead blanks M and rotates them. The base 110 drives the fixture 120 and the series of bead blanks M to feed towards the dividing blade 320, causing the dividing blade 320 to cut along the gap between adjacent bead m, completing the separation and cutting of a single bead. During this process, the control system can coordinate the timing, allowing the auxiliary action of the loading component 140 to prepare for positioning the next bead m to be executed in parallel with the current cutting action of the bead m, thereby effectively shortening the work cycle.

[0052] Understandably, after the shaped bead m is separated from the string of bead blanks M, the individual bead m, supported by the second positioning post 131b, does not fall off with the cutting debris. After cutting, the third drive device drives the guide member 132 to move, causing the second positioning post 131b to move away from the string of bead blanks M. At this time, the shaped and separated individual bead m located on the second positioning post 131b moves away from the processing area along with it. As the second positioning post 131b continues to move until it exits the reinforcing section, the bead m abuts against the reinforcing section 1342 and detaches from the second positioning post 131b. Therefore, a receiving trough or conveying device can be provided below the reinforcing section 1342 to receive the detached finished beads, facilitating subsequent collection or transfer to the next process. Please refer to [link to relevant documentation]. Figure 11 and Figure 12 Both are finished beads P processed using the scheme of this application, wherein the outer surface of the bead can present a smooth curved surface. Subsequently, the second positioning post 131b is driven by the third driving device to penetrate into the reinforcing part 1342 of the positioning member 134, in preparation for the next processing.

[0053] In some embodiments, the fourth driving device can drive the dividing blade 320 to adjust the tool position. When cutting the bead m to be processed, the dividing blade 320 does not rotate, while the fixture 120 drives the series of bead blanks M to rotate and achieves cutting through the feed of the base 110.

[0054] The second positioning column 131b provides support from within the workpiece, greatly enhancing the rigidity of the thin-walled ball m during the cutting process and effectively suppressing deformation and vibration. Combined with a dedicated machining station with spatial separation, this ensures extremely high dimensional accuracy and consistent surface quality of the product. Secondly, the fully automated stepping feeding and parallel operation logic significantly reduce manual intervention and equipment idle time, resulting in a substantial leap in production efficiency. Furthermore, the machine's compact and rational structural layout, with each functional module working in an orderly manner in space and time, not only ensures stable and reliable operation and ease of maintenance but also enhances operational safety.

[0055] Understandably, the bead-making machine 10 of this application can be equipped with multiple sets of fixtures 120 to alternately perform feeding, shaping, and cutting operations, thereby improving production efficiency. Under the coordinated control of the drive module 170, the multiple sets of fixtures 120 cyclically switch positions to achieve a streamlined operation of feeding, shaping, and cutting. When one set of fixtures 120 is in the first processing position for shaping or in the second processing position for cutting, another set of fixtures 120 can complete feeding and positioning at a preparatory position, and immediately enter the next position after the previous process is completed, thereby minimizing idle travel time.

[0056] In addition, please see Figure 10A second aspect of the present invention also provides a processing method applicable to the ball-turning machine 10 described in any of the above embodiments. It should be noted that the fixture 120 has a first processing position, a preparatory position, and a second processing position along the second direction Y, and the drive module 170 is capable of driving the fixture 120 to switch between the three positions. Specifically, the processing method includes the following steps: S101: A hollow tube structure is processed from raw materials. The outer contour of the hollow tube structure can be circular, elliptical, or polygonal. The hollow tube structure is stamped to obtain a series of bead blanks M. It is understood that the outer contour shape of the beads m on the series of bead blanks M can be spherical, elliptical, or polyhedral, etc.

[0057] S102: Loading and preparation: One end of the string of bead blanks M is loaded and clamped onto the fixture 120. Then, the control drive module 170 drives the fixture 120 to move to the preparation position. In this preparation position, tool calibration and system self-test can be performed, and the drive positioning component 130 positions and fixes the bead m to be processed.

[0058] S103: Shaping process. The control drive module 170 drives the fixture 120 from the preparatory position to the first processing position. Upon arrival, the fixture 120 is activated, driving the series of bead blanks M to rotate around their axis. Simultaneously or subsequently, the drive module 170 drives the fixture 120 to feed or retract towards the shaping cutter 310, thereby enabling the shaping cutter 310 to cut and shape the outer surface of the bead m to be processed.

[0059] S104: After the shaping process is completed, the control drive module 170 drives the fixture 120 from the first processing position to the second processing position. Upon arrival, the drive module 170 controls the fixture 120 to smoothly feed towards the dividing blade 320, causing the dividing blade 320 to cut and separate the shaped bead m. When the cutting is detected to be complete, the fixture 120 automatically retracts to the ready position, preparing for the next round of feeding.

[0060] While performing segmentation processing or during the brief intervals that follow, some actions that prepare for feeding can be performed in parallel, such as controlling the feeding component 140 to pre-position the next bead, thereby shortening the overall processing cycle and achieving efficient continuous production.

[0061] In one specific processing method, after loading the series of bead blanks M into the fixture 120, the method further includes the following steps: Prepare for loading. Control the first drive device 150 to drive the first claw tooth 141 and the second claw tooth 142 to clamp the string of bead blanks M. The clamping point can be between adjacent beads m behind the bead m to be processed.

[0062] The process involves step-by-step pushing. The second drive device 160 drives the loading assembly 140 to move along the axis of the string of bead blanks M towards the side closer to the positioning assembly 130. The pushing distance is preset according to the bead diameter, typically the bead diameter plus the process clearance. During the pushing process, the entire string of bead blanks moves forward synchronously, bringing the bead m to be processed to the starting position. The second positioning post 131b extends from the positioning assembly 130 and inserts into the inner wall of the bead m to be processed, providing radial support. Then, the clamp 120 is controlled to clamp the string of bead blanks M, while the first drive device 150 is controlled to drive the first claw 141 and the second claw 142 to release the string of bead blanks M, and the second drive device 160 is controlled to drive the loading assembly 140 to move and reset towards the side away from the positioning assembly 130.

[0063] The shaping process is then performed. The control drive module 170 drives the base 110 to move the entire workpiece system to the first processing position. The fixture 120 is activated to drive the series of bead blanks M to rotate, while the shaping cutter 310 of the tool module 300 is controlled to cut and shape the outer surface of the bead m. During this process, the drive module 170 continuously drives the base 110 to feed or retract towards the shaping cutter 310 until the predetermined outer diameter is formed.

[0064] The bead is then divided and processed. After shaping, the control base 110 moves to the second processing position so that the dividing blade 320 can cut and separate the shaped bead m from the string of bead blanks M. It should be noted that during the cutting process, the drive module 170 continuously drives the base 110 to feed slightly closer to the dividing blade 320 to ensure a smooth cut without burrs. At the same time, the second positioning post 131b slowly retracts a certain distance before the cutting is completed to avoid interference with the cutting tool. After the shaped bead m is separated, it moves away from the string of bead blanks M along with the second positioning post 131b until it comes into contact with the positioning member 134 and disengages from the second positioning post 131b.

[0065] Understandably, the bead-making machine 10 of this application can be equipped with multiple sets of fixtures 120 to alternately perform feeding, shaping, and cutting operations, thereby improving production efficiency. Under the coordinated control of the drive module 170, the multiple sets of fixtures 120 cyclically switch positions to achieve a streamlined operation of feeding, shaping, and cutting. When one set of fixtures 120 is in the first processing position for shaping or in the second processing position for cutting, another set of fixtures 120 can complete feeding and positioning at a preparatory position, and immediately enter the next position after the previous process is completed, thereby minimizing idle travel time.

[0066] It should be noted that if directional indications (such as up, down, left, right, front, back, etc.) are involved in the embodiments of the present invention, these directional indications are only used to explain the relative positional relationships and movement of the components in a specific posture. If the specific posture changes, the directional indications will also change accordingly. When a direction reference is introduced in a specific embodiment, unless the direction is specifically limited to unidirectional, the direction can be unidirectional or bidirectional (two parallel and opposite directions). Whether it is unidirectional or bidirectional depends on what those skilled in the art can achieve. When the direction reference is bidirectional, it should be considered that two parallel and different embodiments have been introduced simultaneously.

[0067] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or," "and / or," or "and / or" throughout the text implies three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0068] The above are merely preferred embodiments of the present invention and do not limit the scope of the patent. Any equivalent structural transformations made using the contents of the specification and drawings of the present invention under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the scope of patent protection of the present invention.

Claims

1. A bead-turning machine with a multi-station processing system, suitable for processing a series of bead blanks, wherein the series of bead blanks are workpieces formed by stamping and sequentially connecting cylindrical beads, the series of bead blanks having a cavity extending and penetrating along a first direction, the first direction being parallel to the axis of the series of bead blanks, characterized in that, The bead-carving machine includes: Base; A cutting tool module is mounted on the machine base. The cutting tool module includes a shaping blade and a dividing blade that are independently arranged. The shaping blade and the dividing blade are spaced apart on both sides of the continuous bead blank along a second direction, which is perpendicular to the first direction. A clamp is configured to hold and drive the series of bead blanks to rotate about its axis. The positioning assembly includes a first positioning post and a second positioning post arranged coaxially. The first positioning post is configured to pass through the cavity and is located on the side of the bead body to be processed of the continuous bead blanks near the fixture. The second positioning post is configured to be inserted into or withdrawn from the interior of the bead body to be processed along the first direction. A drive module is connected to the fixture and the positioning component. The drive module is configured to drive the fixture and the positioning component to reciprocate synchronously along the second direction, so that the bead to be processed switches between a first processing position and a second processing position. When the bead to be processed is in the first processing position, the shaping blade can shape the outer surface of the bead to be processed. When the bead to be processed is in the second processing position, the dividing blade can cut the bead that has been shaped, so that the bead is separated from the string of bead blanks. After the dividing blade completes the cutting and separation of the bead, the second positioning post moves away from the first positioning post along the first direction to exit the bead. After the bead is separated from the second positioning post, the second positioning post moves towards the first positioning post and inserts into the interior of the next bead to be processed.

2. The bead-making machine as described in claim 1, characterized in that, The first positioning post has a concave hole at one end near the second positioning post, and the second positioning post has a convex shaft at one end near the first positioning post. The convex shaft is configured to be able to be inserted into or withdrawn from the concave hole.

3. The bead-making machine as described in claim 2, characterized in that, When the bead to be processed is located in the second processing position, the second positioning post moves away from the first positioning post along the first direction, so that the outer convex shaft disengages from the inner concave hole and forms a clearance space, the clearance space being configured to accommodate the dividing blade that cuts into the bead.

4. The bead-making machine as described in claim 1, characterized in that, The bead-making machine further includes a feeding assembly, a first driving device, and a second driving device. The feeding assembly includes a first claw tooth and a second claw tooth that are arranged opposite to each other and can move towards or away from each other. The first claw tooth and the second claw tooth are configured to clamp or release the portion between adjacent beads on the string of bead blanks. The first driving device is connected to the feeding assembly and is used to drive the first claw tooth and the second claw tooth to perform clamping or releasing actions. The second driving device is also connected to the feeding assembly and is used to drive the feeding assembly to reciprocate along the first direction.

5. The bead-making machine as described in claim 4, characterized in that, The bead to be processed also has a preparatory position. The preparatory position, the first processing position, and the second processing position are arranged at intervals along the second direction, and the preparatory position is located between the first processing position and the second processing position. When the bead to be processed is located in the preparatory position, the first driving device drives the first claw and the second claw to perform clamping or releasing actions, the second driving device drives the feeding assembly to reciprocate along the axial direction of the series of bead blanks, and the second positioning post inserts into or exits the interior of the bead to be processed.

6. The bead-making machine according to claim 1, characterized in that, The bead-making machine also includes a base, and the positioning component and the clamp are both mounted on the base. The positioning component is located on one side of the clamp along the axis of the continuous bead blanks. The base is driven by the driving module to reciprocate along the second direction, so that the bead to be processed switches between the first processing position and the second processing position.

7. The bead-making machine as described in claim 6, characterized in that, The positioning component includes a third driving device and a guide member. The guide member is connected to the output end of the third driving device and has a guide hole. The second positioning post is inserted into the guide hole. The guide member is configured to be able to be driven by the third driving device to insert into or retract from the inner wall of the bead to be processed.

8. The bead-making machine as described in claim 7, characterized in that, The positioning assembly further includes a positioning element, which is mounted on the base and has a mounting hole coaxial with the guide hole. The positioning element has a reinforcing portion on the side away from the guide element, and the mounting hole penetrates the reinforcing portion so that the second positioning post can extend from the guide element into the mounting hole and out of the reinforcing portion.

9. The bead-making machine according to claim 8, characterized in that, After the dividing blade cuts the bead, the third driving device drives the guide to move the second positioning post away from the string of bead blanks until the bead comes into contact with the reinforcing part and detaches from the second positioning post.

10. A processing method applicable to processing the continuous bead blanks using a bead-turning machine according to any one of claims 1-9, wherein, The fixture has a first processing position, a preparatory position, and a second processing position along the second direction. The driving module is configured to drive the bead to be processed to switch between the first processing position, the second processing position, and the preparatory position. The processing method includes: Hollow tube structures are processed from raw materials, and the hollow tube structures are stamped to obtain the string of bead blanks; The string of bead blanks is loaded into the fixture, and the drive module is controlled to drive the fixture to move so that the bead to be processed is in the preparatory position; The drive module is controlled to move the bead to be processed from the preparatory position to the first processing position, the fixture is activated to drive the series of bead blanks to rotate, and the shaping cutter is controlled to cut and shape the outer surface of the bead to be processed. The drive module is controlled to move the bead to be processed from the first processing position to the second processing position, and the dividing blade is controlled to cut and separate the shaped bead from the string of bead blanks.

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