Pin tip grinding apparatus

Abstract

The present application belongs to the field of grinding equipment, and provides a pin needle tip grinding equipment, which comprises a machine table, a grinding mechanism, an adjusting mechanism, a locking and releasing mechanism, a driving mechanism, a feeding mechanism and a turnover mechanism; the adjusting mechanism comprises a bearing seat, a clamping shaft and an elastic member. Compared with the prior art, the present application has the advantages that through the synergistic effect of the adjusting mechanism and the locking and releasing mechanism, the clamping shaft is adaptively adjusted under the action of the elastic force, so that the pin needle tip to be ground is abutted against the grinding mechanism with constant pressure, over-grinding or insufficient grinding caused by equipment or workpiece errors in the traditional rigid feeding is avoided, and the stability and consistency of the product grinding quality are significantly improved; in addition, the feeding mechanism and the turnover mechanism are cooperated, the multi-degree-of-freedom adjusting capability of the grinding equipment is realized, the machining of various specifications and different grinding angles is met, and the versatility and machining precision of the equipment are enhanced.

Description

Technical Field

[0001] This invention belongs to the field of grinding equipment, and specifically relates to a pin tip grinding device. Background Technology

[0002] In the field of precision electronic components and semiconductor testing, the pin is the core component of connectors or test sockets. The shape of its tip directly determines the stability and reliability of electrical contact performance. As electronic devices develop towards miniaturization and high frequency, more stringent requirements are placed on the geometric accuracy of the pin tip.

[0003] Existing pin grinding equipment mostly employs rigid feed or simple stroke control methods, primarily targeting pin tips with a single taper. However, when faced with composite processing requirements that necessitate grinding the tip of the pin to create other angled tips, existing technologies reveal significant shortcomings. First, because pins are typically slender and made of hard material, during secondary grinding, if a traditional rigid pushing method is used, the equipment struggles to accurately sense and compensate for minute changes in contact between the pin tip and the grinding wheel. This can easily lead to chipping or angle deviation of the secondary tip due to excessive feed force, or incomplete grinding due to insufficient feed force. Second, when processing composite pin tips with different angles, existing grinding equipment often requires frequent fixture changes or cumbersome angle calibration, and lacks a flexible tilt adjustment mechanism. This makes it difficult to quickly and accurately switch grinding angles within the same process, severely impacting overall grinding efficiency and quality. Summary of the Invention

[0004] The purpose of this invention is to address the aforementioned problems in the existing technology by proposing a pin tip grinding device that achieves adaptive constant force grinding, flexible adjustment of grinding parameters, enhanced equipment versatility, and improved grinding quality and efficiency.

[0005] The objective of this invention can be achieved through the following technical solution: a pin tip grinding device is proposed, comprising: a machine base on which a grinding mechanism is configured; An adjustment mechanism, comprising: a support base disposed on the machine base; a clamping shaft movably passing through the support base along an axis; and an elastic element disposed between the support base and the clamping shaft for applying an elastic thrust to the clamping shaft toward the grinding mechanism. A locking and releasing mechanism is provided, which has a movable plate that can switch between a locked position and a released position on the support. In the locked position, the movable plate abuts against the bottom end of the clamping shaft to overcome the elastic thrust of the elastic element, so that the product to be ground is fixed to the top end of the clamping shaft. In the released position, the movable plate disengages from the bottom end of the clamping shaft, so that the clamping shaft can move axially under the action of the elastic thrust until the end of the product to be ground abuts against the grinding mechanism. A drive mechanism, which is connected to the clamping shaft, is used to drive the clamping shaft to rotate synchronously around its axis, thereby causing the product to rotate synchronously. A feeding mechanism is provided on the machine base, and the movable end of the feeding mechanism is connected to the bearing seat, which is used to adjust the distance difference between the product to be ground and the grinding mechanism. A flipping mechanism is installed on the feeding mechanism. The movable end of the flipping mechanism is connected to the bearing seat and is used to adjust the tilt angle of the clamping shaft and the product to be ground relative to the grinding mechanism.

[0006] In the aforementioned pin tip grinding device, the clamping shaft includes a guide portion, a connecting portion, and a fixing sleeve. The bearing seat has a guide hole, and the guide portion is movably inserted through the guide hole. The connecting portion is used to fix the fixing sleeve to the top end of the guide portion.

[0007] In the aforementioned pin tip grinding device, the locking and releasing mechanism further includes a driving member and a driving block. An assembly block is disposed on the support base. One side of the driving block is connected to the output end of the driving member, and the other side is connected to the moving plate, for driving the moving plate to squeeze the elastic member to contract along the assembly block.

[0008] In the aforementioned pin tip grinding device, the bottom end of the guide portion is connected to a limiting baffle via a fastener, and the end of the elastic element facing away from the bearing seat is fitted with the fastener and connected to the limiting baffle to drive the guide portion to move relative to the moving plate along the grinding mechanism direction.

[0009] In the aforementioned pin tip grinding device, the driving mechanism includes a drive motor and several synchronous pulleys. The output end of the drive motor is connected to any one of the synchronous pulleys, and the several synchronous pulleys are connected by synchronous belt transmission. The adjusting mechanism also includes a gear mounted on the guide portion, and the inner teeth of the synchronous belt mesh with the gear.

[0010] In the aforementioned pin tip grinding device, the guide portion is cut along its axial direction to form a guide plane, and the inner wall of the gear has a mounting plane, with the guide plane abutting against the mounting plane.

[0011] In the aforementioned pin tip grinding device, the feeding mechanism includes: A material transfer module, wherein the movable end of the material transfer module is connected to a movable base, and the support base is connected to the movable base; The machine base is equipped with a mounting bracket, the slide rail is mounted on the mounting bracket, and the slider is connected to the side wall of the movable seat away from the bearing seat. The slider is movably engaged with the slide rail.

[0012] In the aforementioned pin tip grinding device, the flipping mechanism includes a flipping motor and a linkage block. The flipping motor is mounted on the side wall of the movable seat away from the support seat. The linkage block passes through the movable seat and is connected to the support seat. The output end of the flipping motor is connected to the linkage block to drive the support seat to rotate relative to the movable seat.

[0013] In the aforementioned pin tip grinding device, the grinding mechanism includes: A grinding wheel box, on which a rotating grinding wheel is mounted; A transverse motor and a connecting rod are provided. The transverse motor is mounted on the machine base. The output end of the transverse motor is connected to a rotating block. The bottom wall of the grinding wheel box is provided with a mounting column. One end of the connecting rod is eccentrically hinged to the rotating block, and the other end of the connecting rod is movably hinged to the mounting column. A fixed guide rail and a sliding block are provided. The fixed guide rail is set on the machine base, and the sliding block is connected to the bottom wall of the grinding wheel box and is movably engaged with the fixed guide rail.

[0014] The aforementioned pin tip grinding device also includes: A fixed frame is provided on the machine base, and a transverse guide is configured on the fixed frame. The output end of the transverse guide is connected to the transverse frame. A lifting cylinder is installed on the transverse frame, and a lifting plate is connected to the output end of the lifting cylinder; The lever has a fixed seat and a contour block spaced apart on the side wall of the lifting plate. The lever is hinged to the fixed seat and a clamping block is movably connected to the bottom end of the lever. The clamping block movably abuts against the contour block and is used to clamp and release the product to be ground. The clamping cylinder and clamping spring are provided. The output end of the clamping cylinder is connected to a drive plate, and a pusher block is connected to the drive plate. A connecting hole is provided on the side wall of the lever, and the pusher block abuts against the inner wall of the connecting hole. The two ends of the clamping spring are respectively connected to the lifting plate and the side wall of the lever away from the pusher block.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] (1) The pin tip grinding equipment of the present invention, through the synergistic action of the adjustment mechanism and the locking release mechanism, enables the clamping shaft to adaptively adjust the feed under the action of elastic force, ensuring that the pin tip to be ground is pressed against the grinding mechanism with constant pressure, avoiding over-grinding or under-grinding that may be caused by equipment or workpiece errors due to traditional rigid feed, and significantly improving the stability and consistency of product grinding quality; in addition, the synergistic cooperation of the feed mechanism and the flipping mechanism realizes the multi-degree-of-freedom adjustment capability of the grinding equipment, meets the processing requirements of various specifications and different grinding angles, and greatly enhances the versatility and processing accuracy of the equipment.

[0017] (2) The rotating block is eccentrically connected to one end of the connecting rod, and the mounting column is hinged to the other end. With the sliding block and the fixed rail, the grinding wheel box is guided and limited, thus enabling the grinding wheel to move back and forth along its axis. This not only helps to improve the flatness of the grinding surface, but also enables the grinding wheel to wear evenly by controlling the lateral movement trajectory of the grinding wheel, thus extending the service life of the grinding wheel.

[0018] (3) The limiting baffle not only limits the displacement of the clamping shaft relative to the moving plate, preventing it from falling off or misaligning, but also serves as the fulcrum of the elastic force, ensuring that the elastic element can continuously and stably apply a thrust toward the grinding mechanism to the guide.

[0019] (4) By utilizing the meshing of the inner teeth of the synchronous belt with the gear, and the movable contact of the guide plane and the mounting plane, the clamping shaft can move relative to the gear along its axial direction to complete the adaptive position adjustment of the product to be ground. It can also realize the rotation of the product to be ground under the drive of the drive motor, ensuring the uniformity of product rotation during the grinding process, and significantly improving the smoothness and consistency of the grinding surface. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this application; Figure 2 This is a schematic diagram of the installation structure of the adjustment mechanism, feeding mechanism and tilting mechanism on the support; Figure 3 This is a schematic diagram of the drive mechanism; Figure 4 This is a schematic diagram of the installation structure between the adjusting mechanism and the locking release mechanism; Figure 5 yes Figure 4 A cross-sectional schematic diagram; Figure 6 This is an exploded view of the area between the gear and the clamping shaft; Figure 7 This is a schematic diagram of a structure used to assist in supporting the product to be ground; Figure 8This is a schematic diagram of the grinding mechanism; Figure 9 yes Figure 8 A bottom view; Figure 10 This is a schematic diagram of the installation structure between the lifting cylinder, the clamping cylinder, the lever, and the elastic component; Figure 11 This is a schematic diagram of a structure used for feeding pins.

[0021] In the diagram, 1 is a pin; 10 is a needle tip. 2. Machine base; 20. Grinding mechanism; 200. Grinding wheel box; 201. Grinding wheel; 202. Transverse motor; 203. Connecting rod; 204. Rotating block; 205. Mounting column; 206. Fixed linear guide; 207. Sliding block; 21. Mounting bracket; 22. Feeding module; 23. Carrier plate; 230. Positioning column; 24. Pallet; 3. Adjustment mechanism; 30. Bearing seat; 300. Guide hole; 301. Limiting groove; 302. Anti-detachment plate; 31. Clamping shaft; 310. Guide part; 310a. Guide plane; 311. Connecting part; 312. Fixing sleeve; 313. Fastener; 314. Limiting baffle; 32. Elastic element; 33. Assembly block; 330. Mounting groove; 34. Gear; 340. Mounting plane; 35. Bearing; 4. Locking release mechanism; 40. Moving plate; 41. Driving component; 42. Driving block; 5. Drive mechanism; 50. Drive motor; 51. Synchronous pulley; 52. Synchronous belt; 6. Feeding mechanism; 60. Transfer module; 61. Moving base; 62. Slide rail; 63. Slider; 7. Tilting mechanism; 70. Tilting motor; 71. Linkage block; 80. Fixed frame; 81. Transverse guide rail; 810. Transverse frame; 82. Lifting cylinder; 820. Lifting plate; 821. Fixed base; 822. Contouring block; 83. Lever; 830. Clamping block; 831. Connecting hole; 84. Clamping cylinder; 840. Drive plate; 841. Pushing block; 85. Clamping spring; 90. Mounting block; 91. Transfer cylinder; 92. Auxiliary block; 920. Auxiliary groove; 921. Extension block; 93. Guide rail; 94. Guide block; 95. Buffer block. Detailed Implementation

[0022] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0023] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0024] like Figures 1 to 11 As shown, the present invention provides a pin tip grinding device, which includes a machine base 2, a grinding mechanism 20, an adjustment mechanism 3, a locking and releasing mechanism 4, a driving mechanism 5, a feeding mechanism 6, and a flipping mechanism 7.

[0025] The grinding mechanism 20 is mounted on the machine base 2. The adjusting mechanism 3 includes: a support 30 mounted on the machine base 2; a clamping shaft 31 movably inserted through the support 30 along its axis; an elastic element 32 disposed between the support 30 and the clamping shaft 31, used to apply an elastic thrust to the clamping shaft 31 toward the grinding mechanism 20; and a locking and releasing mechanism 4 having a movable plate 40 that can switch between a locked position and a released position on the support 30. In the locked position, the movable plate 40 abuts against the bottom end of the clamping shaft 31 to overcome the elastic thrust of the elastic element 32, so that the product to be ground is fixed to the top end of the clamping shaft 31; in the released position, ... The moving plate 40 disengages from the bottom end of the clamping shaft 31, allowing the clamping shaft 31 to move axially under the action of elastic thrust until the end of the product to be ground abuts against the grinding mechanism 20; the driving mechanism 5 is connected to the clamping shaft 31 for driving the clamping shaft 31 to rotate synchronously around its axis; the feeding mechanism 6 is set on the machine base 2, and the movable end of the feeding mechanism 6 is connected to the bearing seat 30 for adjusting the distance difference between the product to be ground and the grinding mechanism 20; the flipping mechanism 7 is installed on the feeding mechanism, and the movable end of the flipping mechanism 7 is connected to the bearing seat 30 for adjusting the tilt angle of the clamping shaft 31 and the product to be ground relative to the grinding mechanism 20.

[0026] This embodiment primarily aims to grind and shape a needle tip 10 at the tip of the product to be ground (pin 1). The angle of this needle tip 10 is greater than the angle of the tip of the pin 1. Specifically, for example... Figures 1 to 9 As shown, before the grinding operation begins, the locking release mechanism 4 pre-drives the moving plate 40 to the locked position. At this time, the moving plate 40 strongly abuts against the bottom end of the clamping shaft 31, forcing the clamping shaft 31 to overcome the preload of the elastic element 32 and move along... Figure 5The device moves vertically downwards (or away from the grinding mechanism 20) and locks in this state. In this state, the clamping shaft 31 is rigidly fixed and will not move axially. The operator or robot can stably mount the pin 1 to be ground onto the top of the clamping shaft 31. Because the clamping shaft 31 is locked, the clamping process will not exert any additional axial impact on the pin 1, effectively protecting the original tip shape of the pin 1. After clamping, the locking release mechanism 4 controls the moving plate 40 to retract to... Figure 5 In the release position shown, the moving plate 40 is no longer in contact with the bottom end of the clamping shaft 31 (i.e., maintaining a certain distance). This also means that the clamping shaft 31 is no longer limited by the moving plate 40. Under the action of the elastic potential energy stored in the elastic element 32, a constant elastic thrust is generated in the direction of the grinding mechanism 20. The clamping shaft 31 drives the pin 1 to automatically feed axially until the tip of the pin 1 abuts against the high-speed rotating grinding mechanism 20 with controlled contact pressure. It is worth noting that, due to the certain error in the specifications of the pin 1 during processing, and the wear of the grinding surface on the grinding mechanism 20, this structure can flexibly maintain continuous and stable contact and grinding with the grinding surface of the grinding mechanism 20 according to the actual processing conditions of the pin 1 (see reference). Figure 5 As shown in the structure, the pins 1 connected to different clamping shafts 31 can be adaptively adjusted through the corresponding elastic elements 32. That is, the bottom end of the clamping shaft 31 can abut against the bottom wall of the moving plate 40 in the released position at the maximum travel. Of course, when facing a longer pin 1, the extension of the pin 1 is relatively small, so there can also be a height difference between the bottom end of the clamping shaft 31 and the bottom wall of the moving plate 40. In addition, the drive mechanism 5 drives the clamping shaft 31 and the pin 1 to rotate at high speed. With the cooperation of the feeding mechanism 6 and the flipping mechanism 7, it is ensured that the tip of the pin 1 can be uniformly ground in the accurate position and angle during the grinding process. As can be seen, this grinding equipment utilizes the elastic element 32 to adaptively adjust the feed of the clamping shaft 31, ensuring that the tip of the pin 1 to be ground is pressed against the grinding mechanism 20 with constant pressure. This avoids over-grinding or under-grinding that may occur due to equipment or workpiece errors in traditional rigid feeding, significantly improving the stability and consistency of product grinding quality. With the synergistic effect of the feeding mechanism 6 and the flipping mechanism 7, the grinding equipment achieves multi-degree-of-freedom adjustment capability, meeting the processing requirements of various specifications and different grinding angles, greatly enhancing the versatility and processing accuracy of the equipment.

[0027] The clamping shaft 31 includes a guide portion 310, a connecting portion 311, and a fixing sleeve 312. A guide hole 300 is provided in the bearing seat 30, and the guide portion 310 is movably inserted through the guide hole 300. The connecting portion 311 is used to fix the fixing sleeve 312 to the top end of the guide portion 310.

[0028] like Figures 4 to 6 As shown, when the locking release mechanism 4 is activated and the moving plate 40 retracts from the locked position to the released position, the clamping shaft 31, under the push of the elastic element 32, moves along the guide gap axis direction. Figure 5 The shaft is lifted upwards, at which point the guide portion 310 of the clamping shaft 31 slides within the guide hole 300 of the bearing seat 30. This guide hole 300 provides precise radial constraint to the guide portion 310, ensuring that the clamping shaft 31 always moves strictly along the axis during axial feed or retraction, preventing swaying or jamming. When it is necessary to install the pin 1 to be ground, the moving plate 40... Figure 5 The locking position shown compresses the elastic element 32 vertically downwards. Once the elastic element 32 is compressed to a certain extent (i.e., the elastic element 32 no longer contracts and deforms, and the moving plate 40 can no longer move, this is the locking position, not shown in the figure), it means that both the guide portion 310 and the fixing sleeve 312 are fixed to the bearing seat 30. The operator can then insert the pin 1 into the inner hole of the fixing sleeve 312 and lock it. Preferably, the fixing sleeve 312 can be made of plastic material. The coaxiality of the pin 1 and the guide part 310 is ensured by the interference fit between the pin 1 and the fixing sleeve 312.

[0029] Furthermore, such as Figure 4 and Figure 6 As shown, this embodiment uses a connecting part 311 to fix the fixing sleeve 312 to the top of the guide part 310. Specifically, the fixing sleeve 312 is a vulnerable part and a part that directly contacts the workpiece. When it wears out over a long period of time or when it is necessary to process pins 1 with different diameters, the fixing sleeve 312 can be quickly removed from the connecting part 311 for replacement. The connecting part 311 can provide a reference for the installation of the fixing sleeve 312 and can also achieve quick assembly after abutting against the inner wall of the fixing sleeve 312 (preferably by interference fit). This improves assembly efficiency and eliminates the need to replace the entire guide part 310, reducing equipment maintenance costs and improving the efficiency of line changeover production.

[0030] The locking release mechanism 4 also includes a drive member 41 and a drive block 42. An assembly block 33 is disposed on the support 30. One side of the drive block 42 is connected to the output end of the drive member 41, and the other side is connected to the moving plate 40, for driving the moving plate 40 to squeeze the elastic member 32 to contract along the assembly block 33.

[0031] In this embodiment, the elastic element 32 is installed between the assembly block 33 and the movable plate 40, such as... Figure 4 and Figure 5As shown, the driving component 41 (preferably replaced by a stepper motor or servo motor or other driving devices) provides the power source. The driving block 42 precisely controls the position switching of the moving plate 40 on the support seat 30, thereby precisely controlling the compression and release timing of the elastic element 32. This structure replaces the traditional manual locking method, not only reducing the labor intensity of operators but also significantly improving the cycle time and automation level of the equipment, ensuring the repeatability and positioning accuracy of each clamping and releasing action. Furthermore, in this embodiment, the assembly block 33 provides a fixed assembly reference and movement limit for the drive motor 50 and the elastic element 32, resulting in higher assembly accuracy and more stable operation of the overall transmission structure, effectively avoiding structural loosening and displacement deviation faults caused by long-term reciprocating motion. Preferably, in this embodiment, the moving plate 40 and the driving block 42 can also be connected by screws, bolts, or other connecting parts 311, allowing for timely disassembly and replacement when parts are worn or damaged.

[0032] The bottom end of the guide part 310 is connected to the limiting plate 314 by the fastener 313. The end of the elastic member 32 away from the bearing seat 30 is fitted with the fastener 313 and connected to the limiting plate 314 to drive the guide part 310 to move relative to the moving plate 40 in the direction of the grinding mechanism 20.

[0033] like Figure 4 and Figure 5 As shown, preferably, this embodiment also provides an installation groove 330 within the assembly block 33. With the limiting baffle 314 detachably connected to the bottom end of the guide portion 310 via fasteners 313, the two ends of the elastic member 32 can respectively abut against the limiting baffle 314 and the bottom wall of the installation groove 330 during installation. The fastener 313 can be replaced by screws, bolts, or other connecting parts 311. Therefore, when the driving member 41 drives the moving plate 40 along... Figure 5 When moving vertically downwards, the bottom wall of the moving plate 40 can abut against the limiting spring, thereby pulling the guide part 310, the fixing sleeve 312 and the product to be ground synchronously along the same direction. Figure 5 Move vertically downwards; while the driving component 41 pushes the moving plate 40 along... Figure 5When lifted vertically upwards, the moving plate 40 slides only along the outer wall of the guide portion 310, meaning the distance between the moving plate 40 and the limiting spring gradually increases. At this point, the release of the elastic potential energy of the elastic element 32 drives the guide portion 310, the fixing sleeve 312, and the product to be ground to synchronously and adaptively adjust their positions. It should be noted that the cooperation between the limiting baffle 314 and the bottom wall of the mounting groove 330 clearly defines the compression stroke and preload range of the elastic element 32, preventing lateral displacement or detachment of the elastic element 32 during repeated compression and rebound, greatly improving the service life and reliability of the mechanism. Simultaneously, the built-in installation method effectively protects the elastic element 32 from external dust and grinding debris, ensuring the long-term stability of its elastic performance. Furthermore, the lifting height of the moving plate 40 via the drive element 41 (i.e., the position of the moving plate 40 at...) Figure 5 The release position shown can also limit the travel range of the self-adjustment of the product to be ground (that is, the limit plate 314 is pushed to the bottom wall of the moving plate 40 by the elastic element 32), so as to avoid the moving plate 40 being too high and causing a lot of idle travel when it moves in the direction of the elastic element 32, thus ensuring the overall production cycle and working efficiency of the grinding mechanism 20.

[0034] The drive mechanism 5 includes a drive motor 50 and several synchronous pulleys 51. The output end of the drive motor 50 is connected to any one of the synchronous pulleys 51. The several synchronous pulleys 51 are connected by a synchronous belt 52. The adjustment mechanism 3 also includes a gear 34 mounted on the guide part 310. The inner teeth of the synchronous belt 52 mesh with the gear 34.

[0035] like Figure 5 As shown, in this embodiment, in addition to the reciprocating movement of the guide part 310 along the axial direction of the guide hole 300, the rotational movement of the guide part 310 within the guide hole 300 is also realized simultaneously. Specifically, the drive motor 50 achieves synchronous power transmission through the synchronous pulley 51 and the synchronous belt 52. Utilizing the meshing transmission between the inner teeth of the synchronous belt 52 and the gear 34, the guide part 310 is precisely driven to rotate around its axial direction within the guide hole 300, thereby driving the fixed sleeve 312 and the clamped product to be ground to rotate at a uniform speed. During the grinding process, the uniform rotation of the workpiece can achieve uniform grinding without dead angles in the circumference, completely solving the defects of excessive grinding in some areas and inadequate grinding in some areas of the workpiece in traditional static grinding, effectively improving the overall grinding consistency and surface finish of the workpiece. At the same time, the transmission method of multiple sets of synchronous pulleys 51 and synchronous belts 52 has the advantages of high transmission accuracy, low power loss, and good synchronization, greatly improving the processing capacity of the equipment. Moreover, the meshing transmission structure of the gear 34 has strong stability, breaking through the limitation of traditional fixed grinding which can only grind in a single position, and greatly improving the comprehensiveness and processing quality of the grinding operation.

[0036] Furthermore, this embodiment also includes bearings 35 located at both axial ends of the gear 34. The inner ring of the bearing 35 has a clearance fit with the outer wall of the guide portion 310, and the outer ring of the bearing 35 has an interference fit with the inner wall of the guide hole 300. Figure 3 As shown, this layout significantly reduces the frictional resistance of the rotational motion of the guide part 310, improving the smoothness of the mechanism's operation and the service life of components. It should be noted that the bearing 35 converts the hard sliding friction between the guide part 310 and the guide hole 300 into rolling friction, greatly reducing motion wear and preventing wobbling, misalignment, and jamming caused by wear and deformation of the guide part 310 and guide hole 300 after long-term operation. This ensures the smoothness of both the rotational and telescopic movements of the guide part 310. Simultaneously, the bearings 35 are symmetrically arranged at both ends of the gear 34's axial direction, providing bidirectional support and limiting for the transmission structure between the gear 34 and the guide part 310. This effectively counteracts radial runout and axial movement generated during rotation, further improving the coaxiality and stability of the transmission structure. This ensures that the workpiece rotates without shaking or misalignment, improving the product grinding quality from a motion accuracy perspective. It also significantly reduces equipment operating noise, energy consumption, and extends the overall service life of the equipment. Preferably, for the axial positioning of the bearing 35, this embodiment can achieve stable assembly of the bearing 35 in the guide hole 300 by installing screws on the bearing seat 30 and having the screw heads abut against the outer ring of the bearing 35.

[0037] Preferably, such as Figure 2 and Figure 4 As shown, in this embodiment, a limiting groove 301 is also provided in the bearing seat 30, wherein a portion of the gear 34 extends into the limiting groove 301 so that the inner teeth of the synchronous belt 52 extending into the limiting groove 301 mesh with the gear 34. Further, as... Figure 2 As shown, in this embodiment, an anti-detachment plate 302 can also be installed on the outer wall of the bearing seat 30 by screws, bolts and other connecting parts 311. The anti-detachment plate 302 abuts against the side of the synchronous belt 52 away from the gear 34, ensuring stable meshing between the inner teeth of the synchronous belt 52 and the gear 34, preventing the synchronous belt 52 from disengaging from the limiting groove 301 during movement, and improving the smoothness and stability of the grinding mechanism 20 during operation.

[0038] The guide portion 310 is cut along its axial direction to form a guide plane 310a, and the inner wall of the gear 34 has a mounting plane 340, with the guide plane 310a abutting against the mounting plane 340. Further, as... Figure 6As shown, this structure, through planar contact limiting, ensures that the movement of the guide part 310 relative to the gear 34 along the axis of the guide hole 300 is not affected, guaranteeing that the guide part 310, driven by the elastic element 32, drives the fixed sleeve 312 and the product to be ground to stably abut against the grinding tool. Simultaneously, it enables complete circumferential positioning of the gear 34 and the guide part 310, eliminating assembly gaps and ensuring that the synchronous belt 52 can synchronously and stably transmit power to the guide part 310 when driving the gear 34 to rotate. This effectively prevents slippage between the gear 34 and the telescopic column, ensuring a constant workpiece rotation speed and smooth operation. Furthermore, the planar limiting structure can withstand greater transmission torque, adapting to high-intensity, long-term grinding operations, preventing misalignment and wear of components during high-speed rotation and load operations, effectively improving the stability and durability of the transmission structure, and further ensuring the precision and stability of the grinding process.

[0039] The feeding mechanism 6 includes: a material transfer module 60, the movable end of which is connected to a movable seat 61, and a bearing seat 30 connected to the movable seat 61; a slide rail 62 and a slider 63; a mounting bracket 21 is configured on the machine base 2, the slide rail 62 is mounted on the mounting bracket 21, and a slider 63 is connected to the side wall of the movable seat 61 away from the bearing seat 30, and the slider 63 is movably engaged with the slide rail 62.

[0040] like Figure 2 As shown, in this embodiment, the transfer module 60 serves as the power core. By controlling the moving seat 61, it drives the bearing seat 30 and all its components (including the aforementioned adjustment mechanism 3 and drive mechanism 5) to adjust their feed stroke and feed speed, thereby precisely matching the grinding allowance and processing spacing requirements of different pins 1, significantly improving the grinding dimensional accuracy. During this process, the matching snap-fit ​​structure of the slide rail 62 and the slider 63 provides precise guidance and support for the displacement of the moving seat 61 and the bearing seat 30. The frictional resistance is low and the operation is smooth during the displacement process, which can completely eliminate the problem of the bearing seat 30 swaying left and right or shifting up and down, ensuring that the workpiece feed path is always straight and precisely aligned with the grinding mechanism 20. At the same time, the mounting bracket 21 provides a stable assembly benchmark for the slide rail 62 structure. The overall structure has strong load-bearing capacity and high stability, and can withstand the vibration of equipment operation for a long time without displacement deviation, effectively improving the accuracy consistency of the equipment during long-term operation. Moreover, the sliding structure has low wear and low operating noise, significantly improving the operational stability and service life of the equipment.

[0041] The flipping mechanism 7 includes a flipping motor 70 and a linkage block 71. The flipping motor 70 is mounted on the side wall of the movable seat 61 away from the support seat 30. The linkage block 71 passes through the movable seat 61 and is connected to the support seat 30. The output end of the flipping motor 70 is connected to the linkage block 71 to drive the support seat 30 to rotate relative to the movable seat 61.

[0042] Further reference Figure 2As shown in the structure, in this embodiment, the flipping motor 70 is fixed to the side wall of the movable base 61, using the movable base 61 as the installation reference. This does not occupy the core grinding work space, and the overall integration of the equipment is higher. The linkage block 71 passes through the movable base 61 and is rigidly connected to the carrier base 30 (which can be easily installed and removed using screws and bolts). This allows the rotational power of the flipping motor 70 to be precisely transmitted to the carrier base 30, ultimately causing the carrier base 30 to flip smoothly and accurately. The entire angle adjustment is seamless and without deviation. Therefore, this structure achieves stepless and precise adjustment of the pin 1's tilt angle. It can flexibly adjust the contact angle between the pin 1 tip and the grinding wheel 201 according to processing requirements, precisely processing various irregular structures such as pin tip bevels, arcs, and tapers. This completely breaks through the limitations of traditional equipment with fixed angles and limited processing forms, greatly improving the equipment's processing versatility and product adaptability. Simultaneously, automated angle adjustment eliminates the need for manual alignment and angle adjustment, significantly simplifying the operation process and improving processing efficiency and angle accuracy consistency.

[0043] Furthermore, this solution also includes: a mounting block 90, mounted on the support base 30, with a material transfer cylinder 91 mounted on the mounting block 90; an auxiliary block 92, mounted on the mounting block 90 and connected to the output end of the material transfer cylinder 91, with an auxiliary groove 920 at the end of the auxiliary block 92, the inner wall of the auxiliary groove 920 movably abutting against the outer wall of the product to be ground; a guide rail 93 and a guide block 94, the guide rail 93 being mounted on the mounting block 90, the guide block 94 being connected to the bottom wall of the auxiliary block 92, and the guide block 94 being movably engaged with the guide rail 93; and a buffer block 95, with an extension block 921 connected to the auxiliary block 92, the buffer block 95 being mounted on the extension block 921 and movably abutting against the end of the guide rail 93.

[0044] like Figure 2 , Figure 3 as well as Figure 7 As shown, when facing different length specifications or different wear conditions on the grinding surface of the grinding wheel 201, the corresponding fixed product to be ground on each calibration part will inevitably extend a different distance. Therefore, this embodiment further introduces the structural cooperation of mounting block 90, transfer cylinder 91, auxiliary block 92 and buffer block 95. Specifically, after the product to be ground is placed in the clamping part by an external feeding mechanism (e.g., a robotic arm) for stable clamping, the transfer cylinder 91 can push the auxiliary block 92 to move along the length direction of the guide rail 93. Relying on the cooperation between the guide block 94 and the guide rail 93, the movement trajectory of the auxiliary block 92 is strictly limited to a horizontal straight line. As the auxiliary block 92 moves above the fixed sleeve 312, the inner wall of the auxiliary groove 920 opened at the end of the auxiliary block 92 gradually contacts and abuts the outer wall of the product to be ground (i.e., the outer wall of the pin 1). It should be noted that, as Figure 3 and Figure 7As shown, at this time, the grinding end of the product to be ground is still above the auxiliary block 92, and the inner wall of the auxiliary groove 920 is not interference-fitted with the outer wall of the product to be ground. This also means that the guide part 310 drives the fixed sleeve 312 and the product to be ground along the elastic element 32 through the release of the elastic element 32. Figure 5 When moving vertically upwards, the outer wall of the product to be ground can stably abut against the grinding surface of the grinding wheel 201 by relying on the guide and limit of the auxiliary groove 920, thus achieving auxiliary support for the product to be ground. This also prevents the product from wobbling or vibrating due to its large length extending beyond the bearing seat 30, ensuring the processing accuracy and quality of the grinding wheel 201 on the product's grinding end. Preferably, as... Figure 7 As shown, this embodiment utilizes the extension block 921 and the buffer block 95 to effectively absorb the impact energy at the end of the stroke of the transfer cylinder 91 when the auxiliary block 92 moves the material into place, preventing hard collisions from damaging the product or mechanism, thus playing a role in shock absorption, noise reduction, and equipment protection, and further improving the stability of automated operation.

[0045] The grinding mechanism 20 includes: a grinding wheel box 200 on which a rotatable grinding wheel 201 is disposed; a transverse motor 202 and a connecting rod 203, the transverse motor 202 is mounted on the machine base 2, the output end of the transverse motor 202 is connected to a rotating block 204, the bottom wall of the grinding wheel box 200 is provided with a mounting post 205, one end of the connecting rod 203 is eccentrically hinged to the rotating block 204, and the other end of the connecting rod 203 is movably hinged to the mounting post 205; a fixed linear guide 206 and a sliding block 207, the fixed linear guide 206 is disposed on the machine base 2, the sliding block 207 is connected to the bottom wall of the grinding wheel box 200, and the sliding block 207 is movably engaged with the fixed linear guide 206.

[0046] like Figure 8 and Figure 9As shown, after the grinding operation starts, the transverse motor 202 drives the rotating block 204 at its end to rotate around its axis. It is worth noting that in this embodiment, the center line of the rotating block 204 is coaxially set with the drive shaft axis of the transverse motor 202 (such as a stepper motor or servo motor). Since one end of the connecting rod 203 is eccentrically hinged to the rotating block 204, the rotating block 204 drives the connecting rod 203 to make continuous eccentric swings during rotation. Then, the other end of the connecting rod 203 pushes and pulls the mounting column 205 at the bottom of the grinding wheel box 200, providing a horizontal reciprocating driving force for the grinding wheel box 200. During this process, the sliding block 207 at the bottom of the grinding wheel box 200 restricts it to the fixed linear rail 206 of the machine base 2, ensuring that the grinding wheel box 200 can only slide in a pure straight line along the length of the linear rail, completely constraining vertical jump, lateral offset and swing, so that the grinding wheel box 200 as a whole can only make high-precision linear reciprocating motion along a fixed trajectory. The eccentric connecting rod 203 transmission structure has stable overall power and high transmission efficiency, which can realize the uniform reciprocating motion of the grinding wheel 201. This not only helps to improve the flatness of the grinding surface, but also enables the uniform wear of the grinding wheel 201 by controlling the lateral movement trajectory of the grinding wheel 201, thus extending the service life of the grinding wheel 201.

[0047] It should be noted that the grinding wheel 201 in this embodiment can also be driven by other devices such as stepper motors or servo motors to achieve rotational motion. Furthermore, this embodiment can store grinding oil in the grinding wheel box 200, with the oil level slightly higher than the radial bottom of the grinding wheel 201. This allows a lubricating film to form between the grinding wheel 201 and the workpiece as the grinding wheel 201 rotates, reducing frictional resistance. This not only reduces cutting force but also effectively prevents the workpiece surface from being burned or scratched, thereby achieving extremely high surface finish and machining accuracy.

[0048] This solution also includes: a fixed frame 80, mounted on the machine base 2, with a transverse guide rail 81 mounted on the fixed frame 80, and the output end of the transverse guide rail 81 connected to the transverse frame 810; a lifting cylinder 82, mounted on the transverse frame 810, with the output end of the lifting cylinder 82 connected to a lifting plate 820; and a lever 83, with a fixed seat 821 and a contour block 822 spaced apart on the side wall of the lifting plate 820, the lever 83 hinged to the fixed seat 821, and a clamping block 8 is movably connected to the bottom end of the lever 83. 30. Clamping block 830 is movably abutted against contour block 822 for clamping and releasing the product to be ground; clamping cylinder 84 and clamping spring 85, the output end of clamping cylinder 84 is connected to drive plate 840, pusher block 841 is connected to drive plate 840, the side wall of lever 83 is provided with connecting hole 831, and pusher block 841 abuts against the inner wall of connecting hole 831; the two ends of clamping spring 85 are respectively connected to lifting plate 820 and the side wall of lever 83 away from pusher block 841.

[0049] This embodiment achieves automated and precise clamping, alignment, clamping, and release of the pin 1 through the coordinated operation of the transverse guide rail 81, lifting cylinder 82, lever 83 clamping assembly, clamping cylinder 84, and elastic element 32, completely replacing the manual workpiece clamping method. Specifically, as shown... Figure 10 As shown, the horizontal moving rail 81 can realize the horizontal displacement adjustment of the clamping component, accurately matching the position of the grinding station; the lifting cylinder 82 can precisely control the height of the clamping component, realizing the precise alignment of the workpiece and the grinding mechanism 20, with higher alignment accuracy and smaller deviation; the clamping cylinder 84 drives the pusher block 841 along... Figure 10 When moved to the left, the top of lever 83 compresses and deforms the clamping spring 85, as lever 83 moves around its hinge point with the fixed seat 821. Figure 10 The counterclockwise rotation gradually increases the distance between the clamping block 830 and the contour block 822, ensuring that the pin 1 accurately extends between the clamping block 830 and the contour block 822. Meanwhile, the clamping cylinder 84 drives the pusher block 841 along... Figure 10 When moving horizontally to the right, the lever 83 is driven along the direction of the clamping spring 85 due to its elastic return. Figure 10 Rotating clockwise causes the clamping block 830 to press the pin 1 against the contour block 822. This structure relies on the release of the elastic potential energy of the clamping spring 85 to clamp the pin 1, ensuring consistency and repeatability of each clamping and releasing action, improving the uniformity of clamping accuracy for batch workpieces, and preventing damage to the pin 1 due to excessive clamping force, thus ensuring product integrity. It should also be noted that in this embodiment, the inner diameter of the connecting hole 831 is larger than the overall outer diameter of the pusher block 841, effectively preventing the lever 83 from moving along... Figure 10 When the device swings clockwise or counterclockwise, it becomes stuck between itself and the pusher block 841, which improves the smoothness and stability of the clamping and releasing actions.

[0050] Furthermore, such as Figure 11 As shown, this embodiment also includes a feeding module 22 (such as a linear guide rail) on the machine base 2. The drive end of the feeding module 22 is connected to a material carrier plate 23. The material carrier plate 23 is provided with several positioning posts 230. The operator can insert the pins 1 to be ground into the tray 24 at intervals in the vertical direction. The positioning posts 230 can guide and position the tray 24. Finally, the feeding module 22 moves the tray 24 carrying the pins 1 to the area below the contour block 822 and the clamping block 830, ensuring that the transverse rail 81 cooperates with the lifting cylinder 82 to perform the clamping operation on the pins 1. The entire operation does not require manual intervention, ensuring the production cycle and grinding efficiency of the grinding equipment.

[0051] It should be noted that the elastic element 32 in this embodiment can be replaced by other elastic devices such as compression springs and return springs.

[0052] It should be noted that in this invention, the use of terms such as "first," "second," and "a" is 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 as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified. The terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two elements or the interaction between two elements, unless otherwise explicitly specified. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0053] Furthermore, the technical solutions of the various embodiments of the present invention can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.

[0054] The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of the invention or exceeding the scope defined by the appended claims.

Claims

1. A pin tip grinding device, characterized in that, include: The machine is equipped with a grinding mechanism; An adjustment mechanism, comprising: a support base disposed on the machine base; a clamping shaft movably passing through the support base along an axis; and an elastic element disposed between the support base and the clamping shaft for applying an elastic thrust to the clamping shaft toward the grinding mechanism. A locking and releasing mechanism is provided, which has a movable plate that can switch between a locked position and a released position on the support. In the locked position, the movable plate abuts against the bottom end of the clamping shaft to overcome the elastic thrust of the elastic element, so that the product to be ground is fixed to the top end of the clamping shaft. In the released position, the movable plate disengages from the bottom end of the clamping shaft, so that the clamping shaft can move axially under the action of the elastic thrust until the end of the product to be ground abuts against the grinding mechanism. A drive mechanism, which is connected to the clamping shaft, is used to drive the clamping shaft to rotate synchronously around its axis, thereby causing the product to rotate synchronously. A feeding mechanism is provided on the machine base, and the movable end of the feeding mechanism is connected to the bearing seat, which is used to adjust the distance difference between the product to be ground and the grinding mechanism. A flipping mechanism is installed on the feeding mechanism. The movable end of the flipping mechanism is connected to the bearing seat and is used to adjust the tilt angle of the clamping shaft and the product to be ground relative to the grinding mechanism.

2. The pin tip grinding device according to claim 1, characterized in that, The clamping shaft includes a guide portion, a connecting portion, and a fixing sleeve. The bearing seat has a guide hole, and the guide portion is movably inserted through the guide hole. The connecting portion is used to fix the fixing sleeve to the top end of the guide portion.

3. The pin tip grinding device according to claim 1, characterized in that, The locking release mechanism further includes a driving component and a driving block. An assembly block is disposed on the support base. One side of the driving block is connected to the output end of the driving component, and the other side is connected to the moving plate, for driving the moving plate to squeeze the elastic element to contract along the assembly block.

4. The pin tip grinding device according to claim 2, characterized in that, The bottom end of the guide portion is connected to a limiting baffle via a fastener. The end of the elastic element facing away from the bearing seat is fitted with the fastener and connected to the limiting baffle, so as to drive the guide portion to move relative to the moving plate along the direction of the grinding mechanism.

5. A pin tip grinding device according to claim 2, characterized in that, The drive mechanism includes a drive motor and several synchronous pulleys. The output end of the drive motor is connected to any one of the synchronous pulleys. The several synchronous pulleys are connected by synchronous belt transmission. The adjustment mechanism also includes a gear mounted on the guide portion. The inner teeth of the synchronous belt mesh with the gear.

6. The pin tip grinding device according to claim 5, characterized in that, The guide portion is cut along its axial direction to form a guide plane, and the inner wall of the gear has a mounting plane, with the guide plane abutting against the mounting plane.

7. The pin tip grinding device according to claim 1, characterized in that, The feeding mechanism includes: A material transfer module, wherein the movable end of the material transfer module is connected to a movable base, and the support base is connected to the movable base; The machine base is equipped with a mounting bracket, the slide rail is mounted on the mounting bracket, and the slider is connected to the side wall of the movable seat away from the bearing seat. The slider is movably engaged with the slide rail.

8. A pin tip grinding device according to claim 7, characterized in that, The flipping mechanism includes a flipping motor and a linkage block. The flipping motor is installed on the side wall of the movable seat away from the support seat. The linkage block passes through the movable seat and is connected to the support seat. The output end of the flipping motor is connected to the linkage block and is used to drive the support seat to rotate relative to the movable seat.

9. A pin tip grinding device according to claim 1, characterized in that, The grinding mechanism includes: A grinding wheel box, on which a rotating grinding wheel is mounted; A transverse motor and a connecting rod are provided. The transverse motor is mounted on the machine base. The output end of the transverse motor is connected to a rotating block. The bottom wall of the grinding wheel box is provided with a mounting column. One end of the connecting rod is eccentrically hinged to the rotating block, and the other end of the connecting rod is movably hinged to the mounting column. A fixed guide rail and a sliding block are provided. The fixed guide rail is set on the machine base, and the sliding block is connected to the bottom wall of the grinding wheel box and is movably engaged with the fixed guide rail.

10. A pin tip grinding device according to claim 1, characterized in that, Also includes: A fixed frame is provided on the machine base, and a transverse guide is configured on the fixed frame. The output end of the transverse guide is connected to the transverse frame. A lifting cylinder is installed on the transverse frame, and a lifting plate is connected to the output end of the lifting cylinder; The lever has a fixed seat and a contour block spaced apart on the side wall of the lifting plate. The lever is hinged to the fixed seat and a clamping block is movably connected to the bottom end of the lever. The clamping block movably abuts against the contour block and is used to clamp and release the product to be ground. The clamping cylinder and clamping spring are provided. The output end of the clamping cylinder is connected to a drive plate, and a pusher block is connected to the drive plate. A connecting hole is provided on the side wall of the lever, and the pusher block abuts against the inner wall of the connecting hole. The two ends of the clamping spring are respectively connected to the lifting plate and the side wall of the lever away from the pusher block.

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