Hardware polishing device

Abstract

The utility model relates to the field of polishing device, and disclose a hardware polishing device, including base and worktop, the base bottom is installed with the component that is convenient for removal, worktop top is equipped with the translational slide, its top rotationally connects workpiece rotating platform, workpiece rotating platform top is installed with the vice for fixing workpiece, base and worktop inside are equipped with two groups of mirror image distribution's scissor fork sub -arm, and two are articulated through middle part articulated axle, and cooperate with hydraulic cylinder to realize the height adjustment of worktop, worktop rear side top is equipped with three groups of equidistance side -by -side's polishing execution mechanism, including upright guide, sliding block, polishing arm lever, polishing arm telescopic section, polishing drive motor and mounting head, can realize multidimensional adjustment to adapt to different polishing demand, and the device solves traditional device poor adaptability, low efficiency etc.

Description

Technical Field

[0001] This utility model relates to the field of polishing devices, specifically a hardware polishing device. Background Technology

[0002] Grinding equipment is a device that uses grinding tools to cut and polish the surface of workpieces. It is widely used in machinery manufacturing, hardware processing and other fields. In the production process of hardware parts, whether it is castings, forgings or stampings, their surfaces often have problems such as burrs, flash, roughness and unevenness. These defects not only affect the appearance quality of hardware parts, but may also lead to assembly difficulties, reduced performance and even safety hazards. Therefore, it is particularly important to remove surface defects of hardware parts through precise grinding operations so that the surface of the workpiece reaches the required flatness, smoothness and precision to meet the requirements of subsequent processing, assembly and use.

[0003] Traditional metal polishing equipment struggles to meet the demands for efficient, precise, and flexible processing. Traditional worktables are often fixed in height or require cumbersome manual adjustments like placing shims, making it impossible to adjust the height flexibly according to the worker's height, the size of the metal parts, and the area being polished. Furthermore, the lateral position and angle adjustment of the workpiece are limited, resulting in poor adaptability to different specifications and shapes of metal parts, increasing operational difficulty and time costs. Traditional polishing mechanisms are typically few in number and fixed in position; if multiple parts of a metal part need polishing, frequent disassembly of the workpiece or changing of polishing tools is required, reducing polishing efficiency and potentially increasing workpiece positioning errors due to repeated clamping, affecting polishing accuracy. In addition, traditional devices are mostly fixed in size and inconvenient to move, occupying significant space when idle. The workpiece fixing structure lacks stability, easily wobbling during polishing, further exacerbating the instability of polishing quality and potentially causing safety accidents. Therefore, we propose a new metal polishing device. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a hardware grinding device that solves the aforementioned problems.

[0005] To achieve the above-mentioned objectives, this utility model provides the following technical solution: a hardware grinding device, including a base and a worktable, wherein both the base and the worktable are semi-box structures and can be closed to form a complete box, universal wheels are fixedly installed at the four corners of the bottom of the base, and symmetrical grooves are provided on the top of the worktable, in which a sliding slide is slidably fitted, and a workpiece rotating table is rotatably connected to the top of the sliding slide, and a vise is fixedly installed on the top of the workpiece rotating table; Two sets of scissor lift assemblies are installed inside the base and worktable housing. The scissor lift assemblies are distributed in a mirror image on the front and rear sides of the base and worktable. Each scissor lift assembly includes a scissor lift main arm and a scissor lift secondary arm, which are hinged together by a hinge shaft in the middle. Three sets of grinding actuators are arranged equidistantly side by side on the top rear side of the worktable. Each grinding actuator includes a column guide rail, a slider, a grinding arm, a grinding arm telescopic section, a grinding drive motor, and a mounting head. The column guide rail is vertical and fixedly installed on the rear side of the worktable. The column guide rail has a slot inside, and a slider is slidably connected in the slot. A positioning pin through hole is opened on the right side of the column guide rail along its length. A grinding arm is fixedly connected to the front side of the slider. A grinding arm telescopic section is coaxially sleeved inside the grinding arm. A grinding drive motor is hinged to the end of the grinding arm telescopic section. A mounting head is movably installed at the output end of the grinding drive motor.

[0006] Preferably, one end of the main scissor arm of the two sets of scissor fork assemblies is rotatably connected to a fixed shaft on the bottom inner wall of the left side of the base, and the other end is fixedly mounted with a roller and slides in cooperation with a slide rail on the top inner wall of the worktable; one end of the auxiliary scissor arm is rotatably connected to a fixed shaft on the top inner wall of the left side of the worktable, and the other end is fixedly mounted with a roller and slides in cooperation with a slide rail on the bottom inner wall of the base.

[0007] Preferably, a hinge shaft is fixedly connected to one end of the two sets of scissor arms near the base, and the middle part of the hinge shaft is hinged to the end of the hydraulic cylinder; a hinge shaft is fixedly connected to one end of the two sets of scissor arms near the hinge shaft, and the middle part of the hinge shaft is hinged to the output end of the hydraulic cylinder.

[0008] Preferably, the fixing shafts of the bottom inner wall on the left side of the base and the top inner wall on the left side of the worktable are arranged along the width direction of the base and the worktable and are close to the front and rear sides of the base and the worktable.

[0009] Preferably, the slide rails on the inner wall of the base and the worktable are elongated grooves symmetrically distributed in the transverse direction, and the rollers at the ends of the scissor fork main arm and scissor fork auxiliary arm are embedded in the grooves and slide in cooperation with the grooves.

[0010] Preferably, pin holes are provided at both ends of the top of the workpiece rotary table, the right side of the slider, and the top right side of the grinding arm. The pin holes are threaded with positioning pins, and the middle section of the positioning pin is fixedly provided with an external thread that matches the pin hole. The front end of the positioning pin is a flexible contact head for friction positioning, and the rear end of the positioning pin is a handwheel for insertion and removal.

[0011] Preferably, the flexible contact head of the positioning pin passes through the workpiece rotary table, the slider and the grinding arm and abuts against the top surface of the worktable, the inner wall of the column guide rail and the outer wall of the grinding arm telescopic section respectively. The positioning pin is threaded to the right side of the slider. The positioning pin passes through the positioning pin through hole and is threaded to the slider. The handwheel of the positioning pin is located on the outside of the column guide rail.

[0012] Preferably, the bottom end of the column guide rail is provided with symmetrical and fully penetrating bolt holes, and the two sides of the vise are provided with two sets of symmetrical and fully penetrating bolt holes. Bolts are threaded into the bolt holes for fixing the column guide rail and the worktable, the vise and the workpiece rotary table.

[0013] Compared with the prior art, the present invention provides a hardware grinding device, which has the following beneficial effects: This hardware grinding device allows for flexible adjustment of the worktable height via a scissor lift assembly and hydraulic cylinders. Combined with the lateral sliding of the sliding block and the rotation of the workpiece rotary table, it enables multi-dimensional workpiece position adjustment, significantly improving adaptability to various workpieces and operational flexibility. Its three grinding actuators can be independently adjusted via slider lifting, grinding arm extension / retraction, and motor hinge rotation, allowing for simultaneous or separate grinding of different parts of the workpiece. This reduces tool change and position adjustment time, significantly improving efficiency, and is particularly suitable for multi-process grinding of complex workpieces. The base's casters facilitate movement, and the base and worktable can be closed to form a complete housing, saving storage space. Furthermore, the workpiece is clamped by a vise and locked with positioning pins at each adjustment point, ensuring stability during the grinding process and enhancing precision and operational safety. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the structure and operation of this utility model; Figure 3 for Figure 2 A magnified view of part A in the diagram; Figure 4 This is a schematic diagram of the scissor lift assembly of this utility model; Figure 5 This is a schematic diagram of the bottom of the workpiece rotary table of this utility model.

[0015] In the diagram: 1. Base; 2. Casters; 3. Scissor lift main arm; 4. Scissor lift auxiliary arm; 5. Hydraulic cylinder; 6. Worktable; 7. Translation slide; 8. Workpiece rotary table; 9. Vise; 10. Locating pin; 11. Column guide rail; 12. Slider; 13. Locating pin through hole; 14. Grinding arm; 15. Grinding arm telescopic section; 16. Grinding drive motor; 17. Mounting head. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figure 1-5 A hardware grinding device includes a base 1 and a worktable 6. Both the base 1 and the worktable 6 are semi-box structures and can be closed to form a complete box. Universal wheels 2 are fixedly installed at the four corners of the bottom of the base 1. Symmetrical grooves are opened on the top of the worktable 6. A translation slide 7 is slidably fitted in the groove. A workpiece rotary table 8 is rotatably connected to the top of the translation slide 7. A vise 9 is fixedly installed on the top of the workpiece rotary table 8. Two sets of scissor lift assemblies are set inside the housing of the base 1 and the worktable 6. The scissor lift assemblies are distributed in a mirror image on the front and rear sides of the base 1 and the worktable 6. The scissor lift assembly includes a scissor lift main arm 3 and a scissor lift secondary arm 4. The scissor lift main arm 3 and the scissor lift secondary arm 4 are hinged through the hinge shaft in the middle. Three sets of grinding actuators are set at the top rear side of the worktable 6. The grinding actuators are equidistant and side by side. Each grinding actuator includes a column guide rail 11, a slider 12, a grinding arm 14, a grinding arm telescopic section 15, a grinding drive motor 16, and a mounting head 17. The column guide rail 11 is vertical and fixedly installed on the rear side of the worktable 6. The column guide rail 11 has a slot inside, and the slider 12 is slidably connected in the slot. A positioning pin through hole 13 is opened on the right side of the column guide rail 11 along the length direction. The grinding arm 14 is fixedly connected to the front side of the slider 12. The grinding arm telescopic section 15 is coaxially sleeved inside the grinding arm 14. The grinding drive motor 16 is hinged to the end of the grinding arm telescopic section 15. The mounting head 17 is movably installed at the output end of the grinding drive motor 16. The base 1 serves as the basic support structure of the entire device. It adopts a semi-box structure design, which not only provides installation space for the internal scissor lift assembly, hydraulic cylinder 5, etc., but also effectively protects the internal components from external collisions and dust.

[0018] Furthermore, both the main scissor arm 3 and the auxiliary scissor arm 4 in the two scissor fork assemblies are made of high-quality steel, possessing high strength and good toughness, capable of withstanding significant pressure and tension. One end of the main scissor arm 3 is rotatably connected to a fixed shaft on the inner wall of the bottom left side of the base 1. This fixed shaft undergoes a special heat treatment process, resulting in high hardness and strong wear resistance, ensuring the stability and reliability of the main scissor arm 3 during frequent rotation. The roller at the other end is made of rubber with an anti-slip surface treatment. When it slides against the slide rail on the inner wall of the top of the worktable 6, it reduces frictional resistance and ensures smooth sliding. One end of the auxiliary scissor arm 4 is rotatably connected to a fixed shaft on the inner wall of the top left side of the worktable 6. The design and manufacturing process of this fixed shaft are the same as those of the fixed shaft at one end of the main scissor arm 3. The roller at the other end and its engagement with the slide rail on the inner wall of the bottom of the base 1 are also consistent with those of the main scissor arm 3. Furthermore, the hydraulic cylinder 5 is a key power component for realizing the lifting and lowering action of the scissor lift assembly. It adopts high-precision pistons and seals to ensure stable delivery of hydraulic oil and effective pressure transmission. The end of the hydraulic cylinder 5 is hinged to the middle of the hinge shaft that is fixedly connected to the end of the two sets of scissor lift main arms 3 near the base 1. The output end is hinged to the middle of the hinge shaft that is fixedly connected to the end of the two sets of scissor lift auxiliary arms 4 near the hinge shaft. During operation, by controlling the amount and pressure of hydraulic oil, the extension and retraction length of the hydraulic cylinder 5 is precisely controlled, thereby driving the scissor lift assembly to achieve smooth lifting and lowering action, and thus adjusting the height of the worktable 6. Furthermore, the fixing shafts on the bottom left side of the base 1 and the top left side of the worktable 6 are both made of alloy steel and have undergone precision machining and surface hardening treatment. The layout of the shafts along the width of the base 1 and the worktable 6 and close to the front and rear sides allows the scissor lift assembly to be subjected to more even force during operation, avoiding deformation or damage caused by uneven force, and ensuring the stability and reliability of the entire lifting structure. Furthermore, the slide rails on the inner walls of the base 1 and the worktable 6 adopt a specially designed elongated groove design. The surface of the groove is polished, resulting in high smoothness, which can effectively reduce the friction of the rollers during the sliding process and improve the smoothness of the sliding. The rollers at the ends of the scissor arm 3 and the scissor arm 4 are embedded in the grooves and slide in cooperation with the grooves. The outer diameter of the rollers and the width of the grooves are precisely designed and matched to ensure that the rollers can roll freely in the grooves and to prevent the rollers from shaking or deviating during the sliding process, thereby ensuring the stability and accuracy of the scissor assembly during the lifting process. Furthermore, the pin holes at both ends of the top of the workpiece rotary table 8, the right side of the slider 12, and the top right side of the grinding arm 14 are all manufactured using high-precision machining processes to ensure the dimensional and positional accuracy of the pin holes. The external thread fixed in the middle of the positioning pin 10 fits tightly with the internal thread of the pin hole, providing reliable fastening force. The flexible contact head at the front end of the positioning pin 10 is made of flexible materials such as rubber or silicone, which has good elasticity and friction. When it comes into contact with components such as the workpiece rotary table 8, slider 12, and grinding arm telescopic section 15, it can achieve precise positioning while avoiding damage to the surface of the components. The handwheel at the rear end of the positioning pin 10 is convenient and labor-saving to operate, allowing workers to quickly insert and remove the positioning pin.

[0019] Furthermore, during operation, the flexible contact head of the positioning pin 10 can closely abut against the corresponding parts of the workpiece rotary table 8, the slider 12, and the grinding arm telescopic section 15, effectively restricting the movement of these components through friction to achieve precise positioning. When it is necessary to fix the angle of the workpiece rotary table 8, the positioning pin 10 is screwed into the pin holes at both ends of the top of the workpiece rotary table 8, so that the flexible contact head is in close contact with the top surface of the worktable 6, thereby preventing the rotation of the workpiece rotary table 8. For the positioning pin 10 with threaded connection on the right side of the slider 12, it passes through the positioning pin through hole 13 and is threadedly connected to the slider 12. The handwheel is located on the outside of the column guide rail 11, which is convenient for the operator to operate on the outside of the column guide rail 11. By rotating the handwheel to adjust the position of the positioning pin 10, the position of the slider 12 on the column guide rail 11 is locked, ensuring the stability of the grinding arm 14 at different height positions. Furthermore, the symmetrical and fully penetrating bolt holes at the bottom of the column guide rail 11, and the two sets of symmetrical and fully penetrating bolt holes on both sides of the vise 9, all adopt standard thread specifications, which facilitates their use with corresponding bolts. The design of these bolt holes allows the column guide rail 11 and the worktable 6, and the vise 9 and the workpiece rotary table 8 to be firmly fixedly connected by bolts. During installation, the bolts are passed through the bolt holes and tightened with nuts, which provides strong fastening force and ensures that no parts will loosen or shift during operation. This ensures the stability and reliability of the entire grinding device, thus providing a strong guarantee for the precise grinding of hardware parts.

[0020] Structural Description: Base 1: Base 1 is the basic support structure of the device. It is a semi-box structure that can be closed relative to the worktable 6 to form a complete box. The scissor lift assembly and other components are installed inside. There are casters 2 at the four corners of the bottom, which can protect the internal components and provide a basis for the lifting and lowering of the worktable 6. When closed, it saves storage space. Casters 2: Casters 2 are fixed at the four corners of the bottom of the base 1. They are the moving parts of the device and can rotate flexibly, making it convenient to move the device in the work area. This allows the device to be adjusted according to the needs, improving the ease of use and making it easy to move and store when not in use. Scissor main arm 3: The scissor main arm 3 is an important part of the scissor assembly. It is hinged to the middle of the scissor auxiliary arm 4. One end is rotatably connected to the fixed shaft on the bottom left side of the base 1. The other end has a roller that slides with the slide rail on the top inner wall of the worktable 6. It works with the hydraulic cylinder 5 to lift the worktable 6. Scissor arm 4: Scissor arm 4 and scissor arm 3 form a scissor assembly. It is hinged in the middle. One end is rotatably connected to the fixed shaft on the top inner wall of the left side of the worktable 6. The other end has a roller that slides with the slide rail on the bottom inner wall of the base 1. It works in coordination with scissor arm 3 to support the smooth lifting and lowering of the worktable 6. Hydraulic cylinder 5: Hydraulic cylinder 5 is the power source of the scissor lift assembly. Its end is hinged to the hinge shaft of the two sets of scissor lift main arms 3, and its output end is hinged to the hinge shaft of the two sets of scissor lift auxiliary arms 4. By extending and retracting, it drives the scissor lift main arms 3 and scissor lift auxiliary arms 4 to move, thereby realizing the height adjustment of the worktable 6. Worktable 6: Worktable 6 is a semi-box structure that can be closed with the base 1. The top has symmetrical grooves for sliding slide 7 to slide. The grinding execution mechanism is installed on the rear side, which carries the workpiece and the grinding mechanism. It is the main platform for grinding operations and can be raised and lowered with the scissor lift assembly. Translation slide 7: Translation slide 7 is slidably fitted in the groove at the top of the worktable 6. The top is rotatably connected to the workpiece rotary table 8, which can drive the workpiece rotary table 8 and the workpiece on it to slide laterally, adjust the lateral position of the workpiece, and fix the position with the positioning pin 10. Workpiece rotary table 8: The workpiece rotary table 8 is rotatably connected to the top of the translation slide 7. A vise 9 is installed on the top, and there are pin holes at both ends for locking by positioning pins 10. It can drive the vise 9 and the workpiece to rotate, adjust the workpiece angle, and ensure the angle is stable during grinding after locking. Vise 9: Vise 9 is fixed on the top of the workpiece rotary table 8. It has bolt holes on both sides for bolt fixation. By adjustment, it can clamp hardware of different sizes, providing a stable clamp for the workpiece, preventing the workpiece from shaking during grinding, and ensuring grinding accuracy and safety. Positioning pin 10: The middle section of positioning pin 10 has external threads, the front end is a flexible contact head, and the rear end is a handwheel. It cooperates with the pin holes of multiple parts. By screwing into the pin hole, the flexible contact head abuts against the corresponding part to achieve positioning and locking, ensuring that the position of each movable part is stable during grinding. Column guide rail 11: The column guide rail 11 is vertically fixed to the rear side of the worktable 6. It has an internal groove for the slider 12 to slide. There is a positioning pin through hole 13 on the right side and a bolt hole at the bottom for fixing. It provides a sliding track for the slider 12 and supports the lifting of the grinding arm 14 and other components. Slider 12: Slider 12 is slidably connected in the groove of column guide rail 11. The front side is connected to grinding arm 14, and the right side has a pin hole. It can be raised and lowered along column guide rail 11 to drive grinding arm 14 and other components to adjust the height. The position is locked by positioning pin 10. Positioning pin through hole 13: Positioning pin through hole 13 is opened along the length of the right side of column guide rail 11, allowing positioning pin 10 to pass through and connect with slider 12, providing a channel for positioning pin 10, so that slider 12 can be locked at different heights, ensuring the height of grinding arm 14 is stable; Grinding arm 14: The grinding arm 14 is fixed to the front side of the slider 12 and is internally fitted with the grinding arm telescopic section 15. There is a pin hole at the top right side to support the grinding arm telescopic section 15 and other components. The height can be adjusted by raising and lowering the slider 12, and the telescopic length of the grinding arm telescopic section 15 can be locked. Grinding arm telescopic section 15: The grinding arm telescopic section 15 is coaxially sleeved inside the grinding arm 14, and the end is hinged to the grinding drive motor 16. It can extend and retract to change the horizontal position of the grinding drive motor 16 and the mounting head 17, and is fixed with the positioning pin 10 to adapt to different grinding distance requirements. Grinding drive motor 16: The grinding drive motor 16 is hinged to the end of the telescopic section 15 of the grinding arm, and the output end is equipped with the mounting head 17. It can drive the mounting head 17 and the grinding tool to rotate, providing grinding power. The grinding angle can be adjusted by rotation to adapt to different grinding parts. Mounting head 17: Mounting head 17 is movably mounted on the output end of the grinding drive motor 16. It can be used to mount different grinding tools such as grinding wheels and wire wheels. Under the drive of the motor, it rotates to grind the workpiece and achieve different grinding effects.

[0021] Working Principle: When this hardware grinding device is working, it first moves to a suitable working position using the casters 2 at the bottom of the base 1. Pushing the device causes the casters 2 to roll, achieving overall displacement, allowing for flexible adjustment of the placement position according to the work scenario. Next, the hydraulic cylinder 5 is activated, its output end extending and retracting to drive the two sets of scissor arms in conjunction: the end of the hydraulic cylinder 5 is hinged to the hinge shaft between the two sets of scissor arm main arms 3, and the output end is hinged to the hinge shaft between the two sets of scissor arm auxiliary arms 4. When the hydraulic cylinder 5 extends, one end of the scissor arm main arm 3 rotates around a fixed shaft on the bottom left side of the base 1, while the roller at the other end slides to the right along the slide rail on the top inner wall of the worktable 6. Simultaneously, one end of the scissor arm auxiliary arm 4 rotates around the worktable surface. The fixed shaft on the top inner wall of the left side rotates, and the roller at the other end slides to the left along the slide rail on the bottom inner wall of the base 1. The scissor fork main arm 3 and scissor fork auxiliary arm 4 rotate relative to each other through the central hinge shaft, causing the scissor fork assembly to unfold, thereby pushing the worktable 6 upward. When the hydraulic cylinder 5 retracts, the scissor fork assembly folds, and the worktable 6 lowers downward, thus realizing flexible adjustment of the height of the worktable 6 to meet the height requirements of operators of different heights, hardware parts of different sizes, and different grinding areas. Then, the hardware parts to be ground are placed on the vise 9, and the workpiece is clamped by the adjusting screw of the vise 9 to ensure that the workpiece is initially fixed. If it is necessary to adjust the lateral position of the workpiece, the translation slide 7 is pushed to move it along the worktable. The symmetrical grooves on the top of surface 6 slide, causing the workpiece on the workpiece rotary table 8 and vise 9 to move synchronously. After adjusting to the appropriate lateral position, tighten the positioning pins 10 at both ends of the top of the workpiece rotary table 8 so that its flexible contact head abuts against the top surface of the worktable 6, locking the position of the translation slide 7 through friction. If the workpiece angle needs to be adjusted, rotate the workpiece rotary table 8 so that it rotates around the top of the translation slide 7. After the angle is appropriate, tighten the positioning pins 10 again to lock the workpiece rotary table 8, achieving precise adjustment of the lateral position and angle of the workpiece and improving the adaptability to hardware parts of different specifications and shapes. At the same time, the three grinding actuators work in sync: according to the grinding height requirements, push the slider 12 along the column. The guide rail 11 slides up and down in the groove, driving the grinding arm 14, the grinding arm telescopic section 15, the grinding drive motor 16 and the mounting head 17 to rise and fall synchronously. After adjusting to the target height, the positioning pin 10 is passed through the positioning pin through hole 13 on the right side of the column guide rail 11 and screwed into the pin hole on the right side of the slider 12, so that the flexible contact head abuts against the inner wall of the column guide rail 11 to lock the position of the slider 12. According to the grinding distance requirement, the grinding arm telescopic section 15 is pulled to extend and retract coaxially in the grinding arm 14, changing the horizontal distance between the mounting head 17 and the workpiece. After adjustment, the positioning pin 10 at the top right side of the grinding arm 14 is tightened so that the flexible contact head abuts against the outer wall of the grinding arm telescopic section 15 to lock the length.The grinding drive motor 16 is rotated via a hinged structure to adjust the grinding angle of the mounting head 17. The required grinding tools are then installed on the mounting head 17. The grinding drive motor 16 is started, and its output drives the mounting head 17 and grinding tools to rotate at high speed. During grinding, the vise 9 firmly clamps the workpiece, and the positioning pins 10 lock the translation slide 7, workpiece rotary table 8, slider 12, and grinding arm extension section 15, ensuring no shaking of the workpiece or grinding mechanism. The three grinding actuators can grind different parts of the workpiece separately, eliminating the need for frequent tool changes or workpiece disassembly, achieving continuous operation from rough grinding to fine grinding. After the operation is completed, the vise 9 is released... Opening all positioning pins 10 allows the scissor lift assembly to fold, causing the worktable 6 and base 1 to close and form a complete housing, reducing space occupation when idle. Throughout the process, all structures are closely linked: the casters 2 enable easy movement; the hydraulic cylinder 5 and scissor lift assembly allow for height adjustment of the worktable 6; the sliding slide 7 and workpiece rotary table 8 allow for workpiece position and angle adjustment; the vise 9 and positioning pins 10 ensure the stability of the workpiece and all adjustment parts; and the three grinding actuators enable multi-dimensional, multi-tool grinding, ultimately achieving efficient, precise, flexible, and safe grinding of hardware parts, significantly reducing operational difficulty and time costs, and improving the stability of grinding quality.

[0022] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A hardware polishing device, characterized in that, include: The base (1) and the worktable (6) are both semi-box structures and can be closed to form a complete box. The four corners of the bottom of the base (1) are fixedly installed with casters (2). The top of the worktable (6) is provided with symmetrical grooves. A sliding slide (7) is slidably fitted in the groove. The top of the sliding slide (7) is rotatably connected to a workpiece rotary table (8). A vise (9) is fixedly installed on the top of the workpiece rotary table (8). Two sets of scissor lift assemblies are set inside the housing of the base (1) and the worktable (6). The scissor lift assemblies are distributed in a mirror image on the front and rear sides of the base (1) and the worktable (6). The scissor lift assembly includes a scissor lift main arm (3) and a scissor lift secondary arm (4). The scissor lift main arm (3) and the scissor lift secondary arm (4) are hinged through the hinge shaft in the middle. Three sets of grinding actuators are set on the top rear side of the worktable (6). The grinding actuators are equidistant and side by side. The grinding actuators include a column guide rail (11), a slider (12), a grinding arm (14), a grinding arm telescopic section (15), a grinding drive motor (16), and a mounting head (17). The column guide rail (11) is vertical and fixedly installed on the rear side of the worktable (6). The column guide rail (11) has a slot inside, and the slider (12) is slidably connected in the slot. The column guide rail (11) has a positioning pin through hole (13) along the length direction on the right side. The grinding arm (14) is fixedly connected to the front side of the slider (12). The grinding arm telescopic section (15) is coaxially sleeved inside the grinding arm (14). The grinding drive motor (16) is hinged at the end of the grinding arm telescopic section (15). The mounting head (17) is movably installed at the output end of the grinding drive motor (16).

2. The hardware polishing device according to claim 1, characterized in that, The main scissor arm (3) of the two sets of scissor assemblies is rotatably connected at one end to the fixed shaft on the bottom inner wall of the left side of the base (1), and the other end is fixedly installed with a roller and slides in cooperation with the slide rail on the top inner wall of the worktable (6); the secondary scissor arm (4) is rotatably connected at one end to the fixed shaft on the top inner wall of the left side of the worktable (6), and the other end is fixedly installed with a roller and slides in cooperation with the slide rail on the bottom inner wall of the base (1).

3. The hardware polishing device according to claim 2, characterized in that, A hinge shaft is fixedly connected to one end of the two sets of scissor arms (3) near the base (1), and the middle part of the hinge shaft is hinged to the end of the hydraulic cylinder (5); a hinge shaft is fixedly connected to one end of the two sets of scissor arms (4) near the hinge shaft, and the middle part of the hinge shaft is hinged to the output end of the hydraulic cylinder (5).

4. The hardware polishing device according to claim 2, characterized in that, The fixing shafts of the bottom left inner wall of the base (1) and the top left inner wall of the worktable (6) are set along the width direction of the base (1) and the worktable (6) and are close to the front and rear sides of the base (1) and the worktable (6).

5. A hardware polishing device according to claim 2, characterized in that, The slide rails on the inner walls of the base (1) and the worktable (6) are long strip-shaped grooves symmetrically distributed in the transverse direction. The rollers at the ends of the scissor arm (3) and the scissor arm (4) are embedded in the grooves and slide in cooperation with the grooves.

6. The hardware polishing device according to claim 1, characterized in that, Pin holes are provided at both ends of the top of the workpiece rotary table (8), the right side of the slider (12) and the top right side of the grinding arm (14). The pin holes are threaded with positioning pins (10). The middle section of the positioning pin (10) is fixedly provided with an external thread that matches the pin hole. The front end of the positioning pin (10) is a flexible contact head for friction positioning, and the rear end of the positioning pin (10) is a handwheel for insertion and removal.

7. The hardware polishing device according to claim 6, characterized in that, The flexible contact head of the positioning pin (10) passes through the workpiece rotary table (8), the slider (12) and the grinding arm (14) and abuts against the top surface of the worktable (6), the inner wall of the column guide rail (11) and the outer wall of the grinding arm telescopic section (15). The positioning pin (10) is threaded to the right side of the slider (12). The positioning pin (10) passes through the positioning pin through hole (13) and is threaded to the slider (12). The handwheel of the positioning pin (10) is located on the outside of the column guide rail (11).

8. The hardware polishing device according to claim 1, characterized in that, The bottom end of the column guide rail (11) is provided with symmetrical and fully penetrating bolt holes. The two sides of the vise (9) are provided with two sets of symmetrical and fully penetrating bolt holes. Bolts are threaded in the bolt holes for fixing the column guide rail (11) and the worktable (6), the vise (9) and the workpiece rotary table (8).

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