Novel semi-automatic punch grinding machine

Abstract

The utility model provides a novel semi-automatic punch grinding machine, which relates to the technical field of punch grinding machines and comprises an operation table top, two sliding rails are arranged at the top of the operation table top, sliding blocks are mounted on the two sliding rails, a moving seat is mounted at the tops of the two sliding blocks, a mounting cavity is formed in the moving seat, and the mounting cavity is communicated with the sliding rails. An automatic lubricating assembly is arranged in the mounting cavity and used for lubricating the two sliding rails, dryness and humidity sensors are mounted on the right side walls of the two sliding blocks, and through the design of the automatic lubricating assembly and a self-locking type driving assembly, the automatic lubricating assembly can automatically lubricate the two sliding rails when the dryness and humidity sensors sense that the sliding rails are dry. In addition, the design that a worm gear and a worm are matched with a lead screw is adopted in the self-locking type driving assembly, and the self-locking function and the high-precision effect are achieved.

Description

Technical Field

[0001] This utility model relates to the field of punch grinding machine technology, and in particular to a novel semi-automatic punch grinding machine. Background Technology

[0002] A punch grinding machine is a precision device used to grind punches (such as punches in stamping dies). It can grind the ends of punches into various required shapes, such as round, square, and conical, and can precisely control the dimensional accuracy and surface roughness of the grinding process to meet the high-precision machining requirements in industrial production such as mold manufacturing.

[0003] For example, a novel semi-automatic punch grinding machine disclosed in Chinese patent literature (publication number: CN214110060U) includes a base, a support frame fixedly installed on one side of the base, a control console fixedly installed on the top of the support frame, a PLC controller fixedly installed inside the control console, an iron box fixedly installed on one side of the top of the base, a first motor fixedly installed inside the iron box, a hydraulic pump connected to the drive shaft of the first motor, a movable table fixedly connected to the other end of the hydraulic rod on the hydraulic pump, a guide rail fixedly installed on the top of the base, and the movable table slidably connected to the guide rail. A clamp is installed on the other side of the top of the base opposite the iron box. The beneficial effect of this utility model is that by inputting processing parameters into the PLC controller, the first motor can be automatically controlled to work, eliminating the need for manual adjustment of the movable table's stroke by the operator, allowing one operator to control multiple machines simultaneously, effectively improving work efficiency.

[0004] However, the above solution still has the following shortcomings when implemented:

[0005] Although the device uses a hydraulic pump for adjustment, which improves efficiency, the hydraulic pump lacks precision and self-locking function in actual operation. In addition, since the moving platform slides on the guide rail for a long time, it may cause problems such as sliding jamming if it is not lubricated.

[0006] Therefore, we propose a novel semi-automatic punch grinding machine. Utility Model Content

[0007] The purpose of this invention is to address the shortcomings of existing technologies. This device uses a hydraulic pump for adjustment, which improves efficiency. However, the hydraulic pump lacks precision and self-locking function during actual operation. Furthermore, since the moving platform slides on the guide rail for a long time, it may become stuck if it is not lubricated.

[0008] To achieve the above objectives, the present invention adopts the following technical solution:

[0009] A novel semi-automatic punch grinding machine includes an operating table with two slide rails on its top. Each slide rail has a slider mounted on it, and a movable seat is mounted on the top of each slider. The movable seat has an internal mounting cavity containing an automatic lubrication assembly for lubricating the two slide rails. A humidity sensor is mounted on the right side wall of each slider. The top of the operating table has an inner cavity containing a self-locking drive assembly for driving the movable seat to move.

[0010] As a preferred embodiment of this utility model, a punch grinder body is installed on the top of the movable seat, and a clamp seat is provided on the left side of the punch grinder body. The punch grinder body and the clamp seat are used in cooperation with each other.

[0011] As a preferred embodiment of this utility model, the automatic lubrication assembly includes a lubricating fluid storage tank, a filling pipe is installed on the left side of the lubricating fluid storage tank, a sealing cap is provided at the connection of the filling pipe, the filling pipe and the sealing cap are threaded together, and the filling pipe passes through the movable seat and communicates with the outside.

[0012] As a preferred embodiment of this utility model, oil pumps are provided on both the front and back sides of the lubricant storage tank, and extraction pipes are provided between the two oil pumps and the lubricant storage tank. Liquid delivery pipes are installed on the outer sides of the two oil pumps, and the liquid delivery pipes pass through the movable seat and are connected to the inside of the slider.

[0013] As a preferred embodiment of this utility model, the liquid delivery tube and the humidity sensor are used in conjunction with each other, a controller is installed on the front of the operating table, and the humidity sensor and the controller are electrically connected.

[0014] As a preferred embodiment of this utility model, the self-locking drive assembly includes a lead screw, a worm gear mounted on the lead screw, a worm joint at the connection of the worm gear, a servo motor mounted at the input end of the worm gear, and a connecting block mounted on the lead screw and to the left of the worm gear.

[0015] As a preferred embodiment of this utility model, the connecting block and the lead screw are threaded together, and the top of the connecting block is fixed to the movable seat.

[0016] In a preferred embodiment of this utility model, the servo motor can drive the worm gear to rotate, the worm gear can drive the turbine gear to rotate, and the turbine gear is fixedly connected to the lead screw.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] In this invention, through the design of an automatic lubrication component and a self-locking drive component, the automatic lubrication component can lubricate the slide rail when the humidity sensor detects that it is relatively dry, and the self-locking drive component adopts a worm gear and lead screw design, which has a self-locking function and high precision. Attached Figure Description

[0019] Figure 1 A schematic diagram of the main structure of a novel semi-automatic punch grinding machine provided by this utility model;

[0020] Figure 2 A top view of the structure of a novel semi-automatic punch grinding machine provided by this utility model;

[0021] Figure 3 A partial cross-sectional structural diagram of a novel semi-automatic punch grinding machine provided by this utility model;

[0022] Figure 4 A schematic diagram of the self-locking drive assembly structure of a novel semi-automatic punch grinding machine provided by this utility model.

[0023] Legend: 1. Operating table; 2. Slide rail; 3. Slider; 4. Moving seat; 5. Mounting cavity; 6. Lubricant storage tank; 7. Filling pipe; 8. Sealing cap; 9. Oil pump; 10. Extraction pipe; 11. Delivery pipe; 12. Humidity sensor; 13. Punch grinding machine body; 14. Fixture seat; 15. Inner cavity; 16. Lead screw; 17. Turbine; 18. Worm gear; 19. Servo motor; 20. Connecting block; 21. Controller. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0025] To facilitate understanding of this utility model, a more comprehensive description of this utility model will be provided below with reference to relevant embodiments, and several embodiments of this utility model will be given. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of this utility model more thorough and complete.

[0026] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items. Example

[0028] like Figure 1-4 As shown, this utility model provides a technical solution: the novel semi-automatic punch grinding machine is based on the operating table 1 to construct the entire equipment structure. The operating table 1 is a sturdy planar structure, and its material is usually selected from high-strength metal materials, such as cast iron or steel, to ensure that it can stably support the various components above.

[0029] Two slide rails 2 are designed and installed on the top of the work surface 1. The two slide rails 2 are placed in parallel and maintain a precise distance from each other. The surface of the slide rails 2 is specially treated to have extremely low roughness and high hardness. This design is to reduce the friction of the slider 3 during movement and to ensure that the slider 3 will not cause excessive wear to the slide rails 2 during long-term use.

[0030] Both slide rails 2 are equipped with sliders 3. The fit between the sliders 3 and the slide rails 2 is extremely precise, with the gap controlled within a very small range to ensure that the sliders 3 can slide smoothly and steadily on the slide rails 2. A movable base 4 is installed on the top of the sliders 3. The movable base 4 is a large block structure, and its bottom is tightly connected to the sliders 3 to form a stable whole. The movable base 4 is internally designed with multiple spaces for installing other components and accommodating related mechanisms, providing a stable support platform for the operation of the entire punch grinding machine.

[0031] The top of the movable base 4 is equipped with the punch grinding machine body 13, which is the type used in the prior art or comparative documents. The punch grinding machine body 13 is the core processing part of the entire equipment. It generally includes a complex mechanical structure and precision grinding components, such as the grinding spindle, grinding wheel, drive motor and control system. The grinding spindle is the key component of the punch grinding machine body 13. It has extremely high rotational accuracy and usually uses high-precision bearings (such as ceramic bearings or high-precision angular contact ball bearings) to ensure its stability and low vibration during rotation. The grinding wheel is installed on the grinding spindle. Different types (such as diamond wheels, silicon carbide wheels, etc.) and grit sizes of grinding wheels can be selected according to different punch materials and grinding requirements. The drive motor provides power to the grinding spindle to ensure that it can rotate at a suitable speed. The control system is responsible for precisely controlling various grinding parameters, such as grinding speed and feed rate.

[0032] A clamping seat 14 is provided on the left side of the punch grinding machine body 13. The clamping seat 14 is also the same part in the existing prior art. It is roughly as follows: for round punches, the clamping seat 14 may take the form of a three-jaw chuck or a spring collet; for square or other irregularly shaped punches, there will be corresponding customized clamps.

[0033] The principle of the mutual cooperation between the fixture seat 14 and the punch grinding machine body 13 is as follows: when the punch is placed in the fixture seat 14 and clamped, the fixture seat 14 can accurately position the punch in the grinding working area of ​​the punch grinding machine body 13. During the grinding process, the punch grinding machine body 13 drives the grinding wheel to rotate through the grinding spindle. At the same time, according to the parameters set by the control system, a precise relative movement is generated between the punch and the grinding wheel, thereby realizing the grinding process of the punch. The fixture seat 14 keeps the punch stable throughout the process, preventing it from shifting or shaking during the grinding process, and ensuring the grinding accuracy.

[0034] The automatic lubrication system is a crucial component for ensuring smooth equipment operation. It includes a lubricant storage tank 6. The lubricant storage tank 6 is a sealed container, its capacity designed according to the equipment's usage cycle and lubrication requirements. The tank is typically made of corrosion-resistant and wear-resistant plastic or metal to ensure the lubricant remains uncontaminated or deteriorates during long-term storage. A filling pipe 7 is installed on the left side of the lubricant storage tank 6. The filling pipe 7 is designed for easy addition of lubricant to the tank. A sealing cap 8 is located at the connection between the filling pipe 7 and the storage tank. The filling pipe 7 and the sealing cap 8 are connected by threads. This threaded connection ensures that after the sealing cap 8 is tightened, the filling pipe 7 is completely isolated from the outside, preventing lubricant leakage and the entry of external impurities. The filling pipe 7 passes through the movable base 4 and connects to the outside. This allows operators to add lubricant from outside the movable base 4 via the filling pipe 7 without requiring extensive disassembly of the equipment.

[0035] Oil pumps 9 are installed on both the front and back sides of the lubricant storage tank 6. These oil pumps 9 are the power source for lubricant delivery. The selection of the oil pump 9 is determined based on the pressure and flow requirements of the lubrication system; generally, a small gear pump or vane pump 9 is selected. Each of the two oil pumps 9 is connected to the lubricant storage tank 6 via an extraction pipe 10. The extraction pipe 10 extends to the bottom of the lubricant storage tank 6 to ensure effective lubricant extraction under various liquid levels. The extraction pipe 10 is made of a material with good flexibility and corrosion resistance to adapt to use at different angles and in different environments. The two oil pumps 9... Liquid delivery pipes 11 are installed on the outer side of each slide. The liquid delivery pipes 11 pass through the movable seat 4 and connect to the inside of the slider 3. The oil pump 9 draws lubricating fluid from the lubricating fluid storage tank 6 through the extraction pipe 10, and then uses its own pressure to deliver the lubricating fluid to the inside of the slider 3 through the liquid delivery pipes 11. Inside the slider 3, the lubricating fluid flows to the contact surface between the slide rail 2 and the slider 3 through a specific channel, thereby lubricating the slide rail 2. This design can ensure that the slide rail 2 always maintains a good lubrication state during the operation of the equipment, reduce friction and wear, and improve the service life and operating accuracy of the equipment.

[0036] The liquid delivery tube 11 and the humidity sensor 12 work together. The humidity sensor 12 is installed on the right side wall of the slider 3 and can accurately detect the humidity near the slide rail 2. The humidity sensor 12 is an electronic component that measures the ambient humidity based on physical principles (such as capacitance). In this device, it determines whether the slide rail 2 needs lubrication by detecting the humidity of the air near the surface of the slide rail 2. When the surface of the slide rail 2 is dry, the air humidity is low, and the humidity sensor 12 will generate a corresponding change in electrical signal.

[0037] A controller 21 is installed on the front of the operating table 1. The controller 21 is the control center of the entire equipment. It is usually a microprocessor-based electronic control unit. The humidity sensor 12 communicates with the controller 21 through an electrical connection. When the humidity sensor 12 detects that the humidity at the slide rail 2 is lower than the preset value (i.e., relatively dry), it will transmit this signal to the controller 21. After receiving the signal, the controller 21 will issue a control command to the oil pump 9 according to the preset program. If the controller 21 determines that lubrication is required, it will start the oil pump 9, so that the oil pump 9 starts to draw lubricating fluid and delivers it to the slide rail 2 through the delivery pipe 11, thereby realizing the function of automatic lubrication. This automatic lubrication control method can provide lubrication in a timely manner according to the actual operating conditions of the equipment, avoiding equipment failure and wear caused by insufficient lubrication.

[0038] The self-locking drive assembly is the key component for achieving the displacement of the moving seat 4. It includes a lead screw 16, which is a slender rod with a high-precision thread. The thread pitch and tooth profile are designed according to the required transmission accuracy and load capacity. The lead screw 16 is usually made of high-strength alloy steel and undergoes precision machining and heat treatment processes to ensure that it has sufficient hardness, strength and wear resistance. A worm gear 17 is mounted on the lead screw 16. The worm gear 17 is a specially shaped gear whose teeth match the worm 18. The connection between the worm gear 17 and the lead screw 16 ensures the synchronization of the two during rotation. It is usually achieved by key connection or interference fit.

[0039] A worm gear 18 is provided at the connection of the turbine 17. The worm gear 18 is a shaft part with helical teeth. Its helix angle and module are adapted to the turbine 17. A servo motor 19 is installed at the input end of the worm gear 18. The servo motor 19 is a motor that can precisely control the speed and torque. The servo motor 19 is connected to the worm gear 18 through a coupling to transmit power to the worm gear 18. A connecting block 20 is installed on the lead screw 16 and located on the left side of the turbine 17. The connecting block 20 is threadedly connected to the lead screw 16. The top of the connecting block 20 is fixed to the moving seat 4. This fixing method ensures that the rotational motion of the lead screw 16 can be accurately converted into the linear displacement of the moving seat 4.

[0040] Its working principle is as follows: When the servo motor 19 starts, it drives the worm gear 18 to rotate. Due to the special meshing relationship between the worm gear 18 and the worm wheel 17, the rotation of the worm gear 18 will drive the worm wheel 17 to rotate. In this process, according to the transmission principle of the worm gear 18, the number of teeth rotated by the worm wheel 17 for one revolution of the worm gear 18 is fixed, thereby realizing the functions of deceleration and torque amplification. The rotation of the worm wheel 17 drives the lead screw 16, which is fixedly connected to it, to rotate. When the lead screw 16 rotates, due to the threaded connection between the connecting block 20 and the lead screw 16, the connecting block 20 will move along the axial direction of the lead screw 16. Since the connecting block 20 is fixed to the moving seat 4, the moving seat 4 will move along the slide rail 2 together with the connecting block 20.

[0041] This design of the worm gear 18 and lead screw 16 has a self-locking function. The principle is that when the worm 18 stops rotating, the worm wheel 17 and lead screw 16 cannot rotate in the opposite direction on their own. This is because the helix angle of the worm 18 is less than the equivalent friction angle. Without an external force driving the worm 18, the axial force on the worm wheel and lead screw 16 cannot overcome the friction force, thus keeping them in their current position. This ensures that the moving seat 4 will not move on its own due to external forces (such as gravity, vibration, etc.) when the drive stops, achieving high-precision position control.

[0042] In summary, the actual use of this device includes the following stages:

[0043] Equipment initialization and preparation phase: When the equipment is first installed or restarted after a long period of shutdown, a comprehensive inspection of the equipment should be carried out first. The inspection includes confirming whether the lubricant level in the lubricant storage tank 6 is within the normal range. If it is insufficient, add appropriate lubricant to the lubricant storage tank 6 by unscrewing the sealing cap 8 and using the filling pipe 7, and then tighten the sealing cap 8.

[0044] Check whether the connections of electrical components such as humidity sensor 12, controller 21, and servo motor 19 are normal, and ensure that each sensor and actuator can communicate and work normally.

[0045] Check whether the mechanical components of the punch grinder body 13, such as the grinding spindle, grinding wheel, and clamp seat 14, are securely installed and whether there are any signs of loosening or damage. At the same time, check the components of the self-locking drive assembly, such as the lead screw 16, worm gear 17, and worm 18, to ensure that the transmission is smooth and there are no foreign objects stuck.

[0046] Automatic lubrication monitoring and execution phase: After the equipment is started, the humidity sensor 12 begins to monitor the humidity at the slide rail 2 in real time. It detects the air humidity near the slide rail 2 at certain time intervals (such as every few seconds) and converts the detected humidity data into an electrical signal. When the humidity sensor 12 detects that the humidity at the slide rail 2 is lower than the preset threshold (this threshold is preset in the controller 21 based on the equipment's operating experience and lubrication requirements), it immediately transmits a dry signal to the controller 21. After receiving the dry signal from the humidity sensor 12, the controller 21 starts the oil pump 9 according to the built-in control logic. The oil pump 9 starts working and draws lubricating fluid from the bottom of the lubricating fluid storage tank 6 through the extraction pipe 10. Under the pressure of the oil pump 9, the lubricating fluid is delivered to the lubrication channel inside the slider 3 through the delivery pipe 11. The lubricating fluid flows out from the lubrication channel inside the slider 3 and is evenly applied to the contact surface between the slide rail 2 and the slider 3, thereby lubricating the slide rail 2. During the lubrication process, the controller 21 can control the working time and flow rate of the oil pump 9 according to the preset program to ensure that the lubrication effect is neither excessive nor insufficient.

[0047] Displacement drive stage of moving seat 4: When it is necessary to adjust the position of punch grinding machine body 13 and clamp seat 14 to adapt to the punch grinding requirements of different lengths or positions, the operator sends a movement command to the controller 21 through the operation interface (which can be a touch screen or button panel). After receiving the movement command, the controller 21 sends a drive signal to the servo motor 19. The servo motor 19 starts according to the received signal and begins to drive the worm gear 18 to rotate. The rotation of the worm gear 18 drives the turbine 17 to rotate. Since the turbine 17 is fixedly connected to the lead screw 16, the lead screw 16 also rotates. The rotation of the lead screw 16 causes the connecting block 20, which is threaded to it, to move along the axial direction of the lead screw 16. The movement of the connecting block 20 drives the moving seat 4, which is fixed to it at the top, to move along the slide rail 2. The moving speed and displacement distance of the moving seat 4 are jointly determined by the rotation speed of the servo motor 19, the pitch of the lead screw 16, and the control algorithm of the controller 21. During the movement, the controller 21 will monitor the position of the moving seat 4 in real time and make fine adjustments to the rotation speed of the servo motor 19 by comparing it with the preset target position to ensure that the moving seat 4 can accurately reach the target position.

[0048] Stable operation and shutdown phase: When the moving seat 4 reaches the target position, the servo motor 19 stops rotating. Due to the self-locking function of the self-locking drive assembly, the lead screw 16, worm gear 17, and worm 18 maintain their current state, and the moving seat 4 remains stably stationary at the target position, without displacement due to equipment vibration, gravity, or other external forces. During punch grinding, the equipment continues to run, and the automatic lubrication assembly lubricates the slide rail 2 in a timely manner based on the detection results of the humidity sensor 12, ensuring smooth operation of the equipment. When the punch grinding work is completed, the equipment power is turned off, and the equipment stops running. During long-term shutdown, the equipment can be properly cleaned and maintained, such as wiping the surfaces of the slide rail 2 and slider 3, and checking the quality of the lubricant, to prepare for the next use.

[0049] 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 novel semi-automatic punch grinding machine, comprising an operating table (1), characterized in that: The top of the operating table (1) is provided with two slide rails (2), and each of the two slide rails (2) is equipped with a slider (3). The top of the two sliders (3) is equipped with a movable seat (4). The movable seat (4) has an installation cavity (5) inside. The installation cavity (5) is equipped with an automatic lubrication component. The automatic lubrication component is used to lubricate the two slide rails (2). The right side wall of each of the two sliders (3) is equipped with a humidity sensor (12). The top of the operating table (1) is provided with an inner cavity (15). The inner cavity (15) is equipped with a self-locking drive component. The self-locking drive component is used to drive the movable seat (4) to move.

2. The novel semi-automatic punch grinding machine according to claim 1, characterized in that: The top of the movable seat (4) is equipped with a punch grinder body (13), and a clamp seat (14) is provided on the left side of the punch grinder body (13). The punch grinder body (13) and the clamp seat (14) cooperate with each other.

3. A novel semi-automatic punch grinding machine according to claim 2, characterized in that: The automatic lubrication assembly includes a lubricant storage tank (6), a filling pipe (7) is installed on the left side of the lubricant storage tank (6), a sealing cap (8) is provided at the connection of the filling pipe (7), the filling pipe (7) and the sealing cap (8) are threaded together, and the filling pipe (7) passes through the movable seat (4) and communicates with the outside.

4. A novel semi-automatic punch grinding machine according to claim 3, characterized in that: The lubricant storage tank (6) is equipped with oil pumps (9) on both the front and back sides. There is a suction pipe (10) between the two oil pumps (9) and the lubricant storage tank (6). There is a liquid delivery pipe (11) installed on the outside of the two oil pumps (9). The liquid delivery pipe (11) passes through the movable seat (4) and connects to the inside of the slider (3).

5. A novel semi-automatic punch grinding machine according to claim 4, characterized in that: The liquid delivery tube (11) and the humidity sensor (12) are used together. A controller (21) is installed on the front of the operating table (1). The humidity sensor (12) and the controller (21) are electrically connected.

6. A novel semi-automatic punch grinding machine according to claim 1, characterized in that: The self-locking drive assembly includes a lead screw (16), a turbine (17) mounted on the lead screw (16), a worm gear (18) at the connection of the turbine (17), a servo motor (19) mounted at the input end of the worm gear (18), and a connecting block (20) mounted on the lead screw (16) and on the left side of the turbine (17).

7. A novel semi-automatic punch grinding machine according to claim 6, characterized in that: The connecting block (20) is threadedly connected to the lead screw (16), and the top of the connecting block (20) is fixed to the movable seat (4).

8. A novel semi-automatic punch grinding machine according to claim 7, characterized in that: The servo motor (19) can drive the worm (18) to rotate, and the worm (18) can drive the turbine (17) to rotate. The turbine (17) is fixedly connected to the lead screw (16).

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