Separated-head bar machining equipment

Abstract

The invention discloses split bar machining equipment which is used for grinding the front end face of a split bar composed of a small-diameter section, a transition section and a large-diameter section which are sequentially connected from front to back, the split bar machining equipment comprises a feeding device, a grinding device and a discharging device, and the feeding device comprises a feeding pipe mechanism, a transfer mechanism and a pushing mechanism; the separated bars are output to the transfer mechanism one by one through the feeding pipe mechanism and moved to the front side of the pushing mechanism through the transfer mechanism, the separated bars on the transfer mechanism are pushed forwards into the grinding device in the axial direction of the pushing mechanism through the pushing mechanism, and the discharging device is used for pushing the ground separated bars away from the carrying rotary disc one by one. The device is high in integration and automation degree, the feeding function block is arranged at the grinding station to be matched with the intermittently-rotating material carrying rotary disc, the problems that the micro drill point is prone to being broken and abrasion of a grinding wheel is accelerated during grinding machining are effectively solved, the machining precision is improved, the product quality is guaranteed, meanwhile, the machining efficiency is high, and the production cost is reduced.

Description

Technical Field

[0001] This invention relates to the field of micro drill bit processing technology, and more specifically to a split-bar processing equipment. Background Technology

[0002] In the machining of micro drill bits, grinding is one of the key processes to ensure drill bit accuracy. However, existing grinding methods have many problems. On the one hand, during grinding, due to factors such as unstable grinding force and unreasonable feed methods, micro drill bits are prone to breakage, leading to reduced production efficiency. Furthermore, it is difficult to control the machining tolerance of the drill bits within ±0.01mm. On the other hand, inappropriate grinding methods accelerate the wear of the grinding wheel, shorten its service life, and require frequent wheel replacements, further increasing production costs. Frequent wheel replacements also affect the continuity and stability of the machining process. Summary of the Invention

[0003] To overcome the above-mentioned defects, the present invention provides a split bar stock processing equipment, which optimizes the equipment structure to achieve stable grinding processing of the front end face of the split bar stock, effectively solving the problems of easy breakage, low precision and accelerated grinding wheel wear of micro drill bits during grinding processing, thereby improving production efficiency and product quality and reducing production costs.

[0004] To address the aforementioned technical problems, this invention discloses a parting bar processing device for grinding the front end face of a parting bar consisting of a small-diameter section, a transition section, and a large-diameter section connected sequentially from front to back. The processing device includes a loading device, a grinding device, and a unloading device. The feeding device includes a feeding pipe mechanism, a transfer mechanism and a pushing mechanism. The split bar stock is output one by one from the feeding pipe mechanism to the transfer mechanism, and then moved to the front of the pushing mechanism by the transfer mechanism. The pushing mechanism pushes the split bar stock on the transfer mechanism forward along its axial direction into the grinding device. The grinding device includes a material-carrying turntable located in front of the discharge port of the transfer mechanism for receiving split bar stock, and a servo motor for driving the material-carrying turntable to rotate intermittently around its axial direction. The front and rear sides of the top of the material-carrying turntable are provided with grinding wheels and feed function blocks. The grinding surface of the grinding wheel and the functional inclined surface of the feed function block are arranged opposite to each other. Multiple material-carrying grooves are arranged at equal angles on the outer circumference of the material-carrying turntable. The length of the material-carrying groove is less than the length of the split bar stock. The servo motor drives the material-carrying turntable to move the split bar stock along the circumference. When the split bar stock passes between the grinding wheel and the feed function block, the functional inclined surface can drive the split bar stock to move continuously toward the grinding surface side, thereby realizing the feeding and grinding of the front end face of the split bar stock. The feeding device is used to push the finished grinding bar stock away from the material carrier turntable one by one.

[0005] As a further improvement of the present invention, the material carrier turntable is provided with a feeding guide assembly on the side near the feeding device, the feeding guide assembly comprising: Two feeding baffles are configured, and the two feeding baffles are arranged opposite to each other on the front and rear sides of the material-carrying turntable. The feeding baffle on the side closer to the feeding device has a feeding hole at its starting end that connects with the pushing mechanism, and the end of the front side of the feeding baffle is connected to the starting end of the functional inclined surface. Two limiting plates are configured, which are arranged parallel to each other between the two feeding baffles. Each limiting plate is provided with a first arc-shaped surface that is adapted to the outer circumferential surface of the material-carrying turntable and is used to restrict the split bar material in the material-carrying groove.

[0006] As a further improvement of the present invention, the two feeding baffles are defined as a front feeding baffle and a rear feeding baffle, wherein the rear feeding baffle is arranged parallel to the material turntable, and the front feeding baffle is arranged from front to back and inclined to the end, while the end of the rear side of the front feeding baffle is in contact with the grinding surface. The first arc-shaped surface is provided with a number of parallel and obliquely distributed protrusions. The protrusions are arranged from front to back and inclined to the end, and the protrusions terminate at the starting end of the functional inclined surface.

[0007] As a further improvement of the present invention, the angle between the functional inclined plane and the vertical plane is 2°.

[0008] As a further improvement of the present invention, the grinding device further includes a grinding clamping assembly, which includes a rubber clamping block disposed on the front side of the feed function block and located between two limiting plates, and a clamping drive unit disposed on the top of the feed function block to drive the rubber clamping block to move up and down. The rubber block is equipped with The second arc-shaped surface adapted to the outer peripheral surface of the material carrier turntable, the guide slope provided at the starting end of the second arc-shaped surface, and the auxiliary slope provided at the bottom of the vertical surface of the rubber block that intersects with the guide slope.

[0009] As a further improvement of the present invention, the feeding device is mounted on one side of the grinding device via a mounting plate; The feeding pipe mechanism is mounted on the mounting plate and includes a blowing pipe that is connected to an external air source and arranged in the front-to-back direction, and a pipe driving assembly for driving the blowing pipe to move perpendicular to its discharge direction to the cleaning position. The transfer mechanism is located on the front side of the feeding pipe mechanism, including a transfer plate slidably mounted on the mounting plate, and a transfer cylinder for driving the transfer plate to move in the same direction as the blowing pipe. The transfer plate is provided with a guide groove for the split bar material to pass through. The feeding mechanism includes a feeding push rod that is slidably mounted on the mounting plate and located near the grinding device, and a feeding cylinder for driving the feeding push rod to move back and forth. The feeding push rod is coaxially arranged with the feed hole.

[0010] As a further improvement of the present invention, the transfer plate has a plurality of stop springs arranged side by side along the moving direction of the split bar on the side of the guide groove near the discharge port. The stop springs are used to apply elastic pressure to the transition section of the split bar placed in the guide groove in the radial direction.

[0011] As a further improvement of the present invention, the material tube drive assembly includes a connecting block slidably mounted on the mounting plate, and a cleaning cylinder for driving the connecting block to move so that the outlet of the blowing tube is placed in the cleaning position. A cleaning groove is provided on the side of the transfer plate near the transfer cylinder. The cleaning groove is arranged in the same direction as the guide groove. At the same time, a waste collection box is provided on the front side of the mounting plate. The receiving port of the waste collection box is arranged facing the discharge port of the cleaning groove.

[0012] As a further improvement of the present invention, the front and rear sides of the mounting plate are respectively provided with U-shaped limiting members for limiting the movement distance of the transfer plate and the connecting block. The opening of the U-shaped limiting member faces upward, and a reset spring is provided on its two opposite inner sidewalls. A limiting block is provided on the side of the transfer plate facing the transfer cylinder. One end of the limiting block is fixedly connected to the transfer plate, and the other end is movably placed in the corresponding U-shaped limiting member. The connecting block has a protrusion facing the side corresponding to the U-shaped limiting member, and the protrusion is placed inside the U-shaped limiting member.

[0013] As a further improvement of the present invention, the material-carrying turntable is provided with a feeding baffle on the side near the feeding device. There are two feeding baffles, which are respectively arranged on the front and rear sides of the material-carrying turntable and are parallel to each other. At the same time, the ends of the two feeding baffles are provided with feeding holes, and the two feeding holes are coaxially arranged. The feeding device is mounted on one side of any of the feeding holes via a bracket, and includes a feeding push rod slidably mounted on the bracket and coaxially arranged with the feeding hole, and a feeding cylinder for driving the feeding push rod to move back and forth.

[0014] The beneficial effects of this invention are: it not only integrates the functions of automatic feeding, grinding and automatic unloading of split bar stock, with a high degree of integration and automation, but also effectively solves the problems of needle breakage and accelerated grinding wheel wear during micro drill bit grinding by setting a feed function block in the grinding station in conjunction with an intermittently rotating material carrier turntable, thereby improving processing accuracy, ensuring product quality, and achieving high processing efficiency and reducing production costs. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the processing equipment of the present invention; Figure 2 For the present invention Figure 1 A schematic diagram of the perspective from back to front; Figure 3 This is a schematic diagram of the feeding device of the present invention; Figure 4 This is a schematic diagram of the transfer plate in this invention; Figure 5 This is a schematic diagram of the grinding device of the present invention; Figure 6 This is a schematic diagram of the material-carrying turntable of the present invention; Figure 7 This is a schematic diagram of the structure of the feed function block of the present invention; Figure 8 This is a schematic diagram of the grinding and pressing assembly of the present invention; Figure 9 This is a schematic diagram of the working state of the grinding device of the present invention; Figure 10 This is a schematic diagram of the structure of the split bar stock of the present invention.

[0016] Referring to the accompanying drawings, the following explanations are provided: 1. Feeding device; 10. Feeding pipe mechanism; 100. Blowing pipe; 101. Material pipe drive assembly; 1010. Connecting block; 1011. Cleaning cylinder; 1012. Protrusion; 11. Transfer mechanism; 110. Transfer plate; 1101. Guide chute; 1102. Cleaning chute; 111. Transfer cylinder; 112. Stop spring; 113. Limit block; 12. Pushing mechanism; 120. Feeding push rod; 121. Pushing cylinder; 2. Grinding device; 20. Carrying turntable; 201. Carrying chute; 21. Servo motor; 22. Grinding wheel; 221. Grinding surface; 23. Feed function block; 231. Functional inclined plane; 24. Feeding guide assembly; 241. Upper Material baffle; 2410, feed hole; 2411, front baffle for feeding; 2412, rear baffle for feeding; 242, limiting plate; 2420, first arc-shaped surface; 2421, protrusion; 25, grinding and pressing assembly; 251, rubber block; 2511, second arc-shaped surface; 2512, guide slope; 2513, auxiliary slope; 252, pressing drive unit; 26, discharge baffle; 260, discharge hole; 3, discharge device; 30, discharge push rod; 31, discharge cylinder; 4, mounting plate; 5, waste collection box; 6, U-shaped limiting component; 61, return spring; 7, bracket; A, split bar stock; A1, small diameter section; A2, transition section; A3, large diameter section. Detailed Implementation

[0017] The preferred embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

[0018] See Figures 1 to 9 This invention provides an embodiment of a split-end bar processing device. This device is specifically designed for grinding the front end face of split-end bars A with a specific structure, and is applicable to split-end bars with a diameter less than 0.54 mm and a tolerance requirement of 0.01 mm. See also... Figure 10 The split-end bar stock A consists of a small-diameter section A1, a transition section A2, and a large-diameter section A3 connected sequentially from front to back. The split-end bar stock processing equipment mainly consists of three parts: a feeding device 1, a grinding device 2, and a discharging device 3. Among them, the feeding device 1 is used to supply the split-end bar stock A; the grinding device 2 is located at the discharge port of the feeding device 1 and is used to transport the split-end bar stock A to the grinding station, where the grinding wheel on the grinding station feeds and grinds the end face of the small-diameter section A1; the discharging device 3 is located at the end of the grinding device 2 and is responsible for pushing the ground split-end bar stock A off the grinding device 2 to ensure a smooth connection of the processing flow.

[0019] As can be seen from the above, the split bar processing equipment described in this embodiment integrates automatic feeding, grinding and unloading functions of split bars. It has a high degree of integration and automation, effectively solves the problems of broken needles and accelerated wear of grinding wheels during micro drill bit grinding, improves processing accuracy, ensures product quality, and has high processing efficiency while reducing production costs.

[0020] The following provides a detailed description of the specific structure and working method of the bar stock splitting equipment described in this embodiment. To clearly and accurately describe the equipment structure and fully explain the technical solution of this embodiment, the appendix is ​​provided below. Figure 1 The presented state serves as a reference point to define the front, back, left, and right directions.

[0021] First, regarding the feeding device 1.

[0022] See Figures 1 to 4 The feeding device 1 is mounted on the right side of the grinding device 2 via the mounting plate 4. The feeding device 1 includes a feeding pipe mechanism 10, a transfer mechanism 11, and a pushing mechanism 12. The split bar stock is output one by one from the feeding pipe mechanism 10 to the transfer mechanism 11, and then moved by the transfer mechanism 11 to the front of the pushing mechanism 12. The pushing mechanism 12 pushes the split bar stock on the transfer mechanism 11 forward along its axial direction into the grinding device 2.

[0023] Furthermore, the feeding pipe mechanism 10 is mounted on the mounting plate 4. This mechanism includes a blowing pipe 100 and a pipe drive assembly 101. The blowing pipe 100 is connected to an external air source and is precisely arranged in the front-to-back direction to ensure the stability and directionality of the blowing. The pipe drive assembly 101 is used to drive the blowing pipe 100 to move left and right perpendicular to its discharge direction to the cleaning position, thereby realizing flexible switching of the blowing pipe position.

[0024] Specifically, the feed pipe drive assembly 101 includes a connecting block 1010 and a cleaning cylinder 1011. The connecting block 1010 is slidably mounted on the mounting plate 4, providing stable support for the movement of the feed pipe 100. The cleaning cylinder 1011 is driven by the connecting block 1010, and its telescopic movement drives the connecting block 1010 to move, thereby accurately positioning the outlet of the feed pipe 100 at the cleaning position. In other words, under the driving action of the cleaning cylinder 1011, the feed pipe 100 can move smoothly and quickly between the feeding position and the cleaning position.

[0025] In addition, a waste collection box 5 is installed on the front side of the mounting plate 4. The inlet of the waste collection box 5 faces the blowing pipe 100 to facilitate the collection of blown waste. During actual operation, when the blowing pipe 100 cannot supply material smoothly due to material interruption, oil stains, or other situations, the cleaning cylinder 1011 will respond immediately, driving the blowing pipe 100 to move quickly to the cleaning position. At this time, by instantly increasing the air pressure inside the blowing pipe 100, the powerful force of the air pressure is used to quickly blow out the waste inside the blowing pipe 100. This waste enters the waste collection box 5 with the airflow, thereby effectively preventing the waste from clogging the blowing pipe 100 and ensuring that the blowing pipe 100 can continuously and stably perform material supply operations.

[0026] A further optimization of the feeding tube mechanism 10 is that, to ensure the stability of the connecting block 1010 when it drives the blowing tube 100 to move, a U-shaped limiting member 6 is provided on the rear side of the mounting plate 4. The opening of the U-shaped limiting member 6 faces upward, and a return spring 61 is installed on its two opposite inner sidewalls.

[0027] Meanwhile, a protrusion 1012 protrudes from the side of the connecting block 1010 facing the corresponding U-shaped limiting member 6, and the protrusion 1012 is movably disposed within the U-shaped limiting member 6. When the connecting block 1010 drives the blowing pipe 100 to move under the drive of the cleaning cylinder 1011, the protrusion 1012 will move within the U-shaped limiting member 6, and the return spring 61 will generate a reverse elastic force on the protrusion 1012. This design makes the blowing pipe 100 not rigidly positioned during movement, but softly positioned, which can effectively limit the moving distance of the connecting block 1010, prevent its excessive movement from damaging the equipment, and buffer the impact force during movement, reduce equipment vibration, and improve the stability and reliability of equipment operation.

[0028] Furthermore, the transfer mechanism 11 is located in front of the feeding tube mechanism 10, and its function is to achieve a smooth transition and precise transfer of the split bar stock between the feeding tube mechanism and the grinding device. The transfer mechanism 11 includes a transfer plate 110 and a transfer cylinder 111.

[0029] The transfer plate 110 is mounted on the mounting plate 4 via a sliding fit, enabling flexible linear movement. The transfer cylinder 111 serves as the power source, driving the transfer plate 110 to move in the left and right directions. The sliding fit structure adopts the existing slider and guide rail connection method.

[0030] A guide chute 1101 and a cleaning chute 1102 are provided on the transfer plate 110. Both the guide chute 1101 and the cleaning chute 1102 extend through the transfer plate 110 in the front-to-back direction. The rear side of the guide chute 1101 is the inlet, which precisely connects with the outlet of the blow pipe 100, and the front side is the outlet, which connects with the grinding device 2, thus constructing a transmission channel for the split bar stock. The width of the guide chute 1101 is slightly larger than the diameter of the large-diameter section of the split bar stock. This design ensures that the split bar stock can move smoothly axially within the guide chute 1101, while avoiding bar stock swaying or deviation caused by excessive clearance.

[0031] The cleaning trough 1102 is located near the transfer cylinder 111. When the blowing pipe 100 is in the cleaning position for cleaning operations, the ejected waste material can be effectively guided by the cleaning trough 1102, ensuring it falls accurately into the waste collection box 5, preventing waste from splashing around and causing pollution or damage to the equipment. Understandably, to ensure that the cleaning trough 1102 can form a closed waste transport channel, its top opening should be equipped with a sealing plate (not shown in the figure), thereby ensuring that the waste material can smoothly enter the waste collection box 5 along the predetermined path.

[0032] Furthermore, multiple stop springs 112 are installed on the side of the guide groove 1101 of the transfer plate 110 near the discharge port. These stop springs 112 are arranged side by side along the moving direction of the split bar stock, and their function is to apply elastic pressure radially to the transition section of the split bar stock passing through the guide groove 1101. Through this elastic positioning method, the split bar stock can be stably fixed in the guide groove 1101, while not affecting the pushing force applied to it by the pushing mechanism, so that the split bar stock can move forward smoothly under the action of the pushing mechanism and enter the subsequent grinding process.

[0033] Further optimization of the transfer mechanism 11 includes the addition of a U-shaped limiting member 6 on the front side of the mounting plate 4 to ensure stability during the movement of the transfer plate 110. This U-shaped limiting member 6 has an upward-facing opening, and return springs 61 are installed on its two opposing inner sidewalls. A limiting block 113 is provided on the side of the transfer plate 110 facing the transfer cylinder 111. One end of the limiting block 113 is fixedly connected to the transfer plate 110, while the other end is movably positioned within the corresponding U-shaped limiting member 6 to reduce equipment vibration and improve the smoothness and reliability of equipment operation.

[0034] Furthermore, the feeding mechanism 12 includes a feeding push rod 120 slidably mounted on the mounting plate 4 and located near the grinding device 2, and a feeding cylinder 121 for driving the feeding push rod 120 to move back and forth. The feeding push rod 120 is coaxially arranged with the feed hole 2410, which avoids problems such as jamming and deviation of the split bar during the feeding process due to force deviation, thereby ensuring that the split bar can smoothly and stably enter the loading groove of the grinding device 2 through the feed hole 2410.

[0035] Next, regarding grinding device 2.

[0036] Continue reading Figures 1 to 9 The grinding device 2 includes a material carrier turntable 20 and a servo motor 21. The material carrier turntable 20 is located in front of the discharge port of the transfer mechanism 11, and its function is to receive the split bar stock conveyed from the transfer mechanism. The servo motor 21 serves as a power drive source, driving the material carrier turntable 20 to rotate intermittently around its axis, so that the split bar stock can achieve orderly flow and precise positioning for grinding at the grinding station, effectively improving the efficiency and quality of the grinding process.

[0037] The material carrier turntable 20 has a grinding wheel 22 and a feed function block 23 installed on its front and rear sides at the top. The grinding surface 221 of the grinding wheel 22 and the functional inclined surface 231 of the feed function block 23 are arranged opposite each other, and the functional inclined surface 231 forms a 2° angle with the vertical plane, providing a suitable feed force for the split bar stock and ensuring the grinding effect and accuracy. The vertical plane is the plane perpendicular to the horizontal plane.

[0038] Furthermore, the functional inclined plane 231 and the intermittent drive of the servo motor 21 work together to form a highly efficient and precise grinding mechanism. Under the intermittent drive of the servo motor 21, the material carrier turntable 20 drives the slit bar stock to rotate in an orderly manner. During this process, the functional inclined plane 231 ensures that the slit bar stock in the same material slot 201 on the material carrier turntable 20 undergoes two complete grinding processes in sequence: rough grinding and fine grinding. This grinding method has significant advantages over the existing linear feed grinding method. In the existing linear feed grinding method, the grinding wheel is prone to uneven wear during the grinding process, leading to grinding wheel damage and affecting its service life. However, the intermittent feed grinding method of the slit bar stock adopted by this grinding device effectively avoids grinding wheel damage and greatly improves the service life of the grinding wheel. At the same time, this grinding method can ensure that the slit bar stock is controlled within the tolerance range of ±0.01mm machining accuracy, fully meeting the requirements of high-precision machining.

[0039] Specifically, multiple material slots 201 are evenly distributed on the outer circumferential surface of the material carrier turntable 20. The length of each material slot 201 is less than the length of the split bar stock, so that when the split bar stock is placed in the material slot 201, both ends are in an elevated state. This elevated state not only facilitates the flexible movement of the split bar stock along the axial direction, but also ensures that the grinding wheel can perform comprehensive and uniform grinding on the front end face of the bar stock during the grinding process. The servo motor 21 drives the material carrier turntable 20 to rotate, causing the split bar stock to move in the circumferential direction. When the split bar stock passes between the grinding wheel 22 and the feed function block 23, the functional inclined surface 231 of the feed function block 23 will contact the split bar stock and drive it to move continuously toward the grinding surface 221 of the grinding wheel 22, so that the front end face of the split bar stock contacts the grinding surface 221 and is ground by it.

[0040] As a preferred embodiment, the central angle θ between adjacent material loading slots 201 is set to 6°, and 60 material loading slots 201 are evenly arranged in a ring on the material loading turntable 20. The servo motor 21 is precisely matched and driven according to this angle parameter to ensure that the angle of rotation of the material loading turntable 20 is accurate each time, so that each split bar can go through two complete grinding processes of rough grinding and fine grinding in sequence to ensure grinding accuracy.

[0041] To ensure that the split bar stock can smoothly and accurately enter the loading slot 201 of the loading turntable 20, a loading guide assembly 24 is provided on the side of the loading turntable 20 near the loading device 1. This assembly mainly consists of a loading baffle 241 and a limiting plate 242. Two loading baffles 241 are provided, which are arranged opposite each other on the front and rear sides of the loading turntable 20. The starting end of the loading baffle 241 near the loading device 1 has a feed hole 2410, which is precisely aligned with the pushing mechanism 12 to ensure that the split bar stock can smoothly enter the loading guide assembly from the loading device. At the same time, the end of the front side of the loading baffle 241 is connected to the starting end of the functional inclined surface 231, which guides the split bar stock smoothly into the grinding station. Two limiting plates 242 are also provided, which are arranged parallel to each other between the two loading baffles 241. Each limiting plate 242 is provided with a first arc-shaped surface 2420, which is adapted to the outer peripheral surface of the material-carrying turntable 20, and can firmly restrict the split bar stock within the material-carrying groove 201. The two limiting plates are arranged around at least half of the outer peripheral surface of the material-carrying turntable 20, effectively restricting the split bar stock from the loading position to the unloading position, preventing the split bar stock from leaving the material-carrying groove 201 during rotation, and ensuring the smooth progress of grinding.

[0042] In order to more accurately guide and position the split bar stock and ensure high precision and consistency in the subsequent grinding process, the two feeding baffles 241 are now defined as the front feeding baffle 2411 and the rear feeding baffle 2412, respectively.

[0043] In terms of specific layout, the rear baffle 2412 is set parallel to the material turntable 20, providing a stable rear positioning reference for the split bar stock. The front baffle 2411, on the other hand, adopts a unique arrangement that slopes from front to back and towards the end, effectively limiting the forward movement of the split bar stock entering the material trough from the feed hole. Simultaneously, the rear end of the front baffle 2411 precisely contacts the grinding surface 221 of the grinding wheel. Overall, the two baffles 241 are arranged with gradually decreasing spacing, forming a channel with guiding and positioning functions. The front baffle 2411 plays a crucial guiding role, guiding the split bar stock towards the rear baffle 2412 until the rear end face of the split bar stock is firmly against the rear baffle 2412. This design ensures that all split bar stock are in a uniform position when entering the grinding station, providing a strong guarantee for achieving consistent grinding accuracy.

[0044] Furthermore, to further improve the positioning accuracy and consistency of the split bar stock during the feeding process, several parallel and obliquely distributed protrusions 2421 are carefully arranged on the first arc-shaped surface 2420 of the limiting plate 242. These protrusions 2421 are also arranged from front to back and inclined towards the end, with their ends terminating at the starting end of the functional inclined surface 231. When the split bar stock moves under the drive of the loading turntable 20, it interacts with these protrusions 2421, thereby generating a backward frictional force. This backward frictional force plays a crucial auxiliary role, further ensuring that the rear end face of the split bar stock closely abuts against the front side of the loading back baffle 2412. Through this dual positioning mechanism, namely the guiding positioning of the loading baffle and the frictional force-assisted positioning generated by the protrusions, the consistency of the split bar stock entering the grinding station can be guaranteed to the greatest extent, laying a solid foundation for subsequent high-quality grinding processing.

[0045] It should be noted that, to clearly illustrate the layout features of the protrusions, in the relevant accompanying drawings, the protrusions are positioned on the outer arc surface of the limiting plate 242, opposite to the first arc surface 2420. It is important to emphasize that this arrangement is solely for the purpose of more intuitively and conveniently demonstrating the distribution, arrangement, and other layout features of the protrusions to technical personnel on the drawings, facilitating their understanding of the design principles and structural relationships.

[0046] To further improve the control accuracy and processing quality of the split bar stock during the grinding process, the grinding device 2 is also equipped with a grinding clamping component 25. Its main function is to ensure the stability of the split bar stock during the grinding operation and avoid affecting the grinding effect due to the bar stock shaking or displacement.

[0047] The grinding and clamping assembly 25 includes a rubber clamping block 251 disposed on the front side of the feed function block 23 and located between two limiting plates 242, and a clamping drive unit 252 mounted on the top of the feed function block 23 for driving the rubber clamping block 251 to move up and down. The rubber clamping block 251 acts on the split bar stock to achieve effective clamping of the bar stock, and under the control of the clamping drive unit 252, the rubber clamping block 251 can perform clamping operations on the split bar stock according to the actual grinding cycle.

[0048] Furthermore, the rubber block 251 is provided with a second arc-shaped surface 2511, the shape of which is adapted to the height of the outer circumference of the material carrier turntable 20. This adaptation design ensures that the rubber block 251 and the split bar stock on the material carrier turntable 20 are tightly fitted, thereby providing a stable and reliable clamping force. At the starting end of the second arc-shaped surface 2511, an inlet ramp 2512 is provided. This design acts as a guide channel, allowing the split bar stock to enter the grinding station more smoothly and reducing instability caused by collisions or jamming. In addition, at the position where the bottom of the vertical surface of the starting end of the rubber block 251 intersects with the inlet ramp 2512, an auxiliary ramp 2513 is also provided. The auxiliary ramp 2513 and the inlet ramp 2512 cooperate to form a guiding system, further ensuring that the split bar stock can enter the grinding station stably and accurately.

[0049] It is worth mentioning that the pressure block is made of rubber. Because rubber has good elasticity and flexibility, it can adaptively adjust to the surface shape of the bar stock during the clamping process, thus providing uniform clamping force. At the same time, the relatively soft rubber material will not damage the bar stock like rigid materials, effectively protecting the surface quality of the bar stock and ensuring that the polished bar stock meets both precision requirements and has good appearance quality.

[0050] Finally, regarding the feeding device 3.

[0051] See Figure 2 The feeding device 3 is mounted on the right side of the material-carrying turntable 20 via a bracket. Correspondingly, the material-carrying turntable 20 is also equipped with two feeding baffles 26 at this location. The two feeding baffles 26 are respectively mounted on the front and rear sides of the material-carrying turntable 20 and are parallel to each other. At the same time, the ends of the two feeding baffles 26 are provided with feeding holes 260, and the two feeding holes 260 are coaxially arranged. The feeding device 3 includes a feeding push rod 30 slidably mounted on the bracket 7 and coaxially arranged with the feeding hole 260, and a feeding cylinder 31 for driving the feeding push rod 30 to move back and forth. The feeding push rod 30 can be driven by the feeding cylinder 31 to pass through one feeding hole 260 and exit through another feeding hole 260, so that the split bar stock leaves the grinding device 2 and is collected uniformly.

[0052] As can be seen from the above, the specific working method of the split bar stock processing equipment of this application is as follows: The equipment completes initialization; at that time, the blowing pipe 100 is aligned with the guide trough 1101 to ensure that the subsequent split bar stock can be smoothly blown into the guide trough; the feeding push rod 120 and the unloading push rod 30 are both in the retracted state, ready for the subsequent feeding and unloading actions; one of the loading troughs 201 on the loading turntable 20 is precisely aligned with the feed hole 2410 to ensure that the split bar stock can accurately enter the loading trough.

[0053] Material loading process.

[0054] Bar stock enters the guide trough: The split bar stock is blown out from the blowing pipe 100 and enters the guide trough 1101 along the predetermined path. Under the action of the stop spring 112, it stays stably in the guide trough 1101 to prevent the bar stock from rolling or slipping at will.

[0055] Transfer plate movement alignment: The transfer cylinder 111 is activated, driving the transfer plate 110 to move to the left, so that the guide chute 1101 is precisely aligned with the feeding push rod 120, preparing for the feeding push rod 120 to push the bar stock.

[0056] Material feeding: The pushing cylinder 121 drives the feeding push rod 120 to move forward. The feeding push rod 120 applies a pushing force to the split bar stock in the guide trough 1101, pushing it forward so that the split bar stock smoothly enters the loading trough 201 through the feed hole 2410. After feeding is completed, the feeding push rod 120 resets, and the transfer plate 110 also resets to its initial position. This cycle is repeated to achieve continuous and stable feeding operation.

[0057] Polishing process.

[0058] Intermittent rotation of the material-carrying turntable: The servo motor 21 drives the material-carrying turntable 20 to rotate intermittently at a central angle of 6°, and the rotation rhythm is synchronized with the feeding rhythm, ensuring that the split bar material in each material-carrying slot 201 can reach the grinding station at the appropriate time.

[0059] Rough grinding stage: When the split bar reaches the starting end of the feed function block 23, the clamping drive unit 252 immediately drives the rubber clamping block 251 to move downward, pressing the split bar into the material loading groove 201 to ensure the stability of the bar during grinding. Subsequently, the grinding wheel 22 rotates at a high speed of 4000 rpm to perform rough grinding on the split bar for 1 second. After the rough grinding is completed, the grinding wheel 22 stops and the rubber clamping block 251 resets.

[0060] Feed Grinding: The servo motor 21 drives the material carrier turntable 20 to rotate 6° again. Simultaneously, the split bar stock moves forward under the drive of the functional inclined plane 231 and contacts the grinding wheel 22 again. At this time, the rubber pressure block 251 moves down again to press the split bar stock, and the grinding wheel 22 rotates at a high speed of 4000 rpm to perform fine grinding on the split bar stock for 1 second. This process is repeated sequentially to perform feed grinding on all the split bar stocks on the material carrier turntable 20, ensuring that each bar stock achieves the expected processing accuracy.

[0061] Material feeding process.

[0062] When the polished split-end bar stock rotates to the side of the unloading device 3 along with the material carrier turntable 20, the unloading cylinder 31 is activated, driving the unloading push rod 30 to move forward. The polished split-end bar stock is pushed out of the grinding device 2 through the unloading hole 260, completing the unloading operation. The ejected split-end bar stock can be collected into a designated container or conveying device for subsequent processing or packaging.

[0063] Cleaning process.

[0064] When cleaning is required for the blowing pipe 100, the cleaning cylinder 1011 drives the connecting block 1010 to move to the left, positioning the outlet of the blowing pipe 100 in the cleaning position. Simultaneously, the transfer cylinder 111 drives the transfer plate 110 to move, precisely aligning its cleaning groove 1102 with the outlet of the blowing pipe 100. Then, high-pressure airflow guides the waste material inside the blowing pipe 100 into the waste collection box 5 through the cleaning groove 1102, completing the cleaning of the blowing pipe 100 and ensuring the normal operation of the equipment and processing quality.

[0065] In summary, the split bar stock processing equipment of the present invention not only integrates automatic feeding, grinding and automatic unloading functions of split bar stock, with a high degree of integration and automation, but also effectively solves the problems of easy needle breakage and accelerated grinding wheel wear during micro drill bit grinding by setting a feed function block in the grinding station in conjunction with an intermittently rotating material carrier turntable, thereby improving processing accuracy, ensuring product quality, and achieving high processing efficiency and reducing production costs.

[0066] Many specific details have been set forth in the foregoing description to provide a thorough understanding of the present invention. However, the above description is merely a preferred embodiment of the present invention, and the present invention can be implemented in many other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed above. Furthermore, any person skilled in the art can make many possible variations and modifications to the technical solutions of the present invention, or modify them into equivalent embodiments, using the methods and techniques disclosed above, without departing from the scope of the present invention. Any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention, without departing from the content of the present invention, shall still fall within the protection scope of the present invention.

Claims

1. A split-end bar processing device, used for grinding the front end face of a split-end bar consisting of a small-diameter section, a transition section, and a large-diameter section connected sequentially from front to back, characterized in that: The processing equipment includes a feeding device (1), a grinding device (2), and a discharging device (3). The feeding device (1) includes a feeding tube mechanism (10), a transfer mechanism (11) and a pushing mechanism (12). The split bar stock is output one by one from the feeding tube mechanism (10) to the transfer mechanism (11), and then moved from the transfer mechanism (11) to the front of the pushing mechanism (12). The pushing mechanism (12) pushes the split bar stock on the transfer mechanism (11) forward along its axial direction into the grinding device (2). The grinding device (2) includes a material-carrying turntable (20) located in front of the discharge port of the transfer mechanism (11) for receiving split bar stock, and a servo motor (21) for driving the material-carrying turntable (20) to rotate intermittently around its axial direction; the front and rear sides of the top of the material-carrying turntable (20) are provided with grinding wheels (22) and feed function blocks (23), the grinding surface (221) of the grinding wheel (22) and the functional inclined surface (231) of the feed function block (23) are arranged opposite to each other, Multiple material loading grooves (201) are set at equal angles on the outer circumferential surface of the material loading turntable (20). The length of the material loading groove (201) is less than the length of the split bar. The servo motor (21) drives the material loading turntable (20) to move the split bar along the circumference. When the split bar passes between the grinding wheel (22) and the feed function block (23), the function inclined surface (231) can drive the split bar to move continuously toward the grinding surface (221) to realize the feeding and grinding of the front end face of the split bar. The feeding device (3) is used to push the finished grinding bar stock away from the material carrier turntable (20) one by one.

2. The bar stock splitting processing equipment according to claim 1, characterized in that: The material-carrying turntable (20) has a feeding guide assembly (24) on one side near the feeding device (1), the feeding guide assembly (24) comprising: There are two feeding baffles (241), which are arranged opposite to each other on the front and rear sides of the material turntable (20). The feeding baffle (241) on the side closer to the feeding device (1) has a feeding hole (2410) that connects with the pushing mechanism (12) at its starting end. At the same time, the end of the front side of the feeding baffle (241) is connected to the starting end of the functional inclined surface (231). Two limiting plates (242) are configured, and the two limiting plates (242) are arranged parallel to each other between the two feeding baffles (241). Each of them is provided with a first arc-shaped surface (2420) that is adapted to the outer peripheral surface of the material carrier turntable (20) and is used to restrict the split bar material in the material carrier groove (201).

3. The bar stock splitting processing equipment according to claim 2, characterized in that: The two loading baffles (241) are defined as a front loading baffle (2411) and a rear loading baffle (2412), respectively. The rear loading baffle (2412) is arranged parallel to the material turntable (20), and the front loading baffle (2411) is arranged from front to back and inclined to the end. At the same time, the end of the rear side of the front loading baffle (2411) is connected to the grinding surface (221). The first arc-shaped surface (2420) is provided with a plurality of parallel and obliquely distributed protrusions (2421), the protrusions (2421) are arranged from front to back and inclined to the end, and the protrusions (2421) terminate at the starting end of the functional inclined surface (231).

4. The bar stock splitting processing equipment according to claim 1, characterized in that: The angle between the functional inclined plane (231) and the vertical plane is 2°.

5. The bar stock splitting processing equipment according to claim 3, characterized in that: The grinding device (2) further includes a grinding clamping assembly (25), which includes a rubber clamping block (251) located on the front side of the feed function block (23) and between two limiting plates (242), and a clamping drive unit (252) located on the top of the feed function block (23) to drive the rubber clamping block (251) to move up and down. The rubber block (251) is provided with The second arc-shaped surface (2511) adapted to the outer peripheral surface of the material carrier turntable (20), the guide slope (2512) provided at the starting end of the second arc-shaped surface (2511), and the auxiliary slope (2513) provided at the bottom of the vertical surface of the rubber block (251) intersecting with the guide slope (2512).

6. The bar stock splitting processing equipment according to claim 5, characterized in that: The feeding device (1) is mounted on one side of the grinding device (2) via a mounting plate (4); The feeding pipe mechanism (10) is mounted on the mounting plate (4) and includes a blowing pipe (100) that is connected to an external air source and arranged in the front-back direction, and a pipe driving assembly (101) for driving the blowing pipe (100) to move perpendicular to its discharge direction to the cleaning position. The transfer mechanism (11) is located on the front side of the feeding pipe mechanism (10), including a transfer plate (110) slidably mounted on the mounting plate (4) and a transfer cylinder (111) for driving the transfer plate (110) to move in the same direction as the blowing pipe (100). The transfer plate (110) is provided with a guide groove (1101) for the split bar material to pass through. The feeding mechanism (12) includes a feeding push rod (120) slidably mounted on the mounting plate (4) and located near the grinding device (2), and a feeding cylinder (121) for driving the feeding push rod (120) to move back and forth. The feeding push rod (120) is coaxially arranged with the feed hole (2410).

7. The bar stock splitting processing equipment according to claim 6, characterized in that: The transfer plate (110) has a plurality of stop springs (112) arranged side by side along the moving direction of the split bar on the side of the guide groove (1101) near the discharge port. The stop springs (112) are used to apply elastic pressure radially to the transition section of the split bar placed in the guide groove (1101).

8. The bar stock splitting processing equipment according to claim 7, characterized in that: The feed pipe drive assembly (101) includes a connecting block (1010) slidably mounted on the mounting plate (4) and a cleaning cylinder (1011) that drives the connecting block (1010) to move so that the outlet of the blowing pipe (100) is placed in the cleaning position. A cleaning groove (1102) is provided on the side of the transfer plate (110) near the transfer cylinder (111). The cleaning groove (1102) is arranged in the same direction as the guide groove (1101). At the same time, a waste collection box (5) is provided on the front side of the mounting plate (4). The receiving port of the waste collection box (5) is arranged facing the discharge port of the cleaning groove (1102).

9. The bar stock splitting processing equipment according to claim 8, characterized in that: The mounting plate (4) is provided with U-shaped limiting members (6) on the front and rear sides respectively for limiting the movement distance of the transfer plate (110) and the connecting block (1010). The opening of the U-shaped limiting member (6) faces upward, and a return spring (61) is provided on its two opposite inner sidewalls respectively. A limiting block (113) is provided on the side of the transfer plate (110) facing the transfer cylinder (111). One end of the limiting block (113) is fixedly connected to the transfer plate (110), and the other end is movably placed in the corresponding U-shaped limiting member (6). The connecting block (1010) has a protrusion (1012) protruding on the side corresponding to the U-shaped limiting member (6), and the protrusion (1012) is placed inside the U-shaped limiting member (6).

10. The bar stock splitting processing equipment according to claim 9, characterized in that: The material-carrying turntable (20) has a feeding baffle (26) on one side near the feeding device (3). There are two feeding baffles (26), which are respectively located on the front and rear sides of the material-carrying turntable (20) and are parallel to each other. At the same time, the ends of the two feeding baffles (26) are provided with feeding holes (260), and the two feeding holes (260) are coaxially arranged. The feeding device (3) is mounted on one side of any of the feeding holes (260) via a bracket (7), and includes a feeding push rod (30) slidably mounted on the bracket (7) and coaxially arranged with the feeding hole (260), and a feeding cylinder (31) for driving the feeding push rod (30) to move back and forth.

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