Safety protection structure of grinding machine

Abstract

The utility model relates to a kind of safety protection structure of grinding machine, including the protective cover being set on workbench, grinding head is equipped in protective cover, grinding head is driven by grinding head driving device, operating door and safety lock are equipped on protective cover, safety lock includes controller, first lock body is installed on protective cover, second lock body is installed on operating door, locking piece for locking;The controller is electrically connected with grinding head driving device, for receiving the start-stop machine signal of grinding head driving device;Locking piece has the locking state of the mutual locking of first lock body and second lock body, and, locking piece has the unlocking state of the relative displacement of first lock body and second lock body;The controller is electrically connected with the locking piece, for controlling the action of locking piece, realize the switching between locking state and unlocking state.Safety lock identifies the start-stop signal of driving device by controller, grinding head starts, safety lock maintains locking state, operating door cannot be opened relative to protective cover, ensure worker operation safety.

Description

Technical Field

[0001] This utility model relates to the field of grinding machine equipment technology, and specifically to a safety protection structure for a grinding machine. Background Technology

[0002] A grinding machine is a machine tool used for precision grinding of workpieces. It mainly achieves the finishing of the workpiece surface by rotating a grinding wheel. Its core function is to improve the dimensional accuracy, shape accuracy and surface finish of the workpiece.

[0003] Grinding machines mainly include:

[0004] Spindle: The core component that drives the grinding wheel to rotate and provides cutting power; it is usually located inside the spindle box.

[0005] Grinding head: includes a grinding wheel, which directly contacts the workpiece for grinding and is linked with the spindle;

[0006] Worktable: Supports and fixes the workpiece; the positioning components on the worktable position the workpiece in multiple directions.

[0007] Feed device: controls the movement of the worktable or grinding head to ensure precise cutting feed.

[0008] The positioning components on the worktable of the grinding machine position the workpiece to ensure its stability during grinding and thus guarantee machining accuracy. After being positioned by the positioning components, the workpiece is ground by the grinding wheel. As the core component of the grinding machine, the grinding wheel poses a danger under high-speed rotation and complex working conditions. If the operator accidentally touches it, it will cause a production accident and endanger the worker's safety. Existing grinding machines are equipped with protective covers, but the grinding wheel needs to idle for a period of time before grinding the workpiece to achieve a stable operating state. However, the operator may open the protective cover during the idle period, which poses a safety hazard. Summary of the Invention

[0009] A safety protection structure for a grinding machine includes a protective cover mounted on a worktable. The protective cover contains a grinding head and an operating station. The grinding head is driven by a grinding head drive device. The protective cover is equipped with an operating door and a safety lock. The safety lock includes a controller, a first lock body mounted on the protective cover, a second lock body mounted on the operating door, and a locking element for locking.

[0010] The controller is electrically connected to the grinding head drive device and is used to receive the start and stop signals of the grinding head drive device;

[0011] The locking element has a locked state in which the first lock body and the second lock body are locked together, and an unlocked state in which the first lock body and the second lock body can be displaced relative to each other; the controller is electrically connected to the locking element and is used to control the action of the locking element to realize the switching between the locked state and the unlocked state.

[0012] The controller receives and judges the start and stop signals of the grinding head drive device. The control circuit controls the power supply of the locking element according to the controller's judgment, realizing the switching of the locking element between the locked and unlocked states. The specific structure of the locking element and the method of controlling the locking / unlocking are not the innovations of this patent. They can refer to the mature electronic lock structure on the market and realize the locking and unlocking of the lock through the circuit.

[0013] Specifically, the unlocking / locking state switching of the safety lock can be implemented based on PLC control, electromagnetic coils, or other specific methods. Existing technologies already have products or circuit designs that implement such control, as well as mature products such as electric locks, which will not be elaborated here. One embodiment can be: when the grinding head drive device is in the power-on state, the controller receives the power-on signal and then controls the electromagnetic coil to continuously energize and generate a magnetic field through the control circuit, which attracts the magnetic latch (locking element) of the safety lock, thereby maintaining the locked state of the safety lock. When the grinding head drive device is in the power-off state, the controller receives the power-off signal, and the control circuit no longer energizes the electromagnetic coil to attract the magnetic latch, and the latch can be unlocked manually / automatically.

[0014] The beneficial effects of this technical solution are as follows: The safety lock is connected to the drive device of the grinding head via a controller, and identifies the start and stop signals of the drive device. When the drive device is first turned on, the controller receives the start signal and immediately drives the locking element through the control circuit to keep the safety lock in a locked state. Even if the grinding wheel rotates slowly or cannot rotate due to a malfunction, the worker cannot open the safety lock, thus avoiding accidental activation. When the grinding wheel is rotating normally at high speed, the controller keeps the safety lock in a locked state and cannot open it, preventing the worker from approaching the grinding wheel. After the machine stops, the grinding wheel stops rotating, and the controller no longer controls the locking element to maintain the locked state, allowing the operating door to open relative to the protective cover, ensuring worker safety, ensuring equipment safety and compliance, and promoting the industry towards the goal of "zero accidents".

[0015] In one possible implementation, the safety lock further includes a timing module electrically connected to the controller and the locking element. The timing module includes an RC delay circuit or a 555 timer chip. The timing module is used to maintain the locking element in a locked state for a set period of time after the grinding head drive device stops operating. This timing module can employ mature existing technologies such as RC delay circuits or timer chips; how to implement the timing or delay is not the technical innovation of this patent.

[0016] This timing module can keep the safety lock locked for a period of time after the grinding head drive device stops. This is because after the grinding machine stops, the grinding wheel will still need one to three minutes to return to a stationary state. Opening the protective cover during this period still poses a safety hazard.

[0017] In one possible implementation, the worktable is arranged laterally, and the drive mechanism for the grinding head includes a spindle box, which is arranged longitudinally relative to the worktable and is longitudinally slidable relative to the worktable. This allows for adjustment of the grinding wheel's grinding intensity on the workpiece.

[0018] In one possible implementation, a sliding adjustment assembly is provided between the spindle box and the frame of the grinding machine; the sliding adjustment assembly includes a guide rail and a drive motor that drives the spindle box to slide longitudinally along the guide rail.

[0019] In one possible implementation, the protective cover is further provided with a pressing assembly, which includes a support base, a crank drive arm, and a connecting rod disposed on the worktable of the grinding machine. One end of the connecting rod is rotatably connected to the support base via a hinge block, and the other end of the connecting rod is hinged to a pressing block. The crank drive arm is connected to the middle of the connecting rod, and the crank drive arm drives the connecting rod to rotate relative to the support base to drive the pressing block to move up and down relative to the workpiece on the worktable, so that the pressing block has a pressing position for pressing down on the workpiece and a separating position for lifting up and separating from the workpiece.

[0020] In one possible implementation, it further includes a first drive assembly and a movable seat disposed on a worktable, wherein the support seat and the crank drive arm are both disposed on the movable seat; the first drive assembly drives the movable seat to move laterally relative to the workpiece; the first drive assembly includes a first lead screw laterally disposed on the worktable and a first gear disk that drives the first lead screw, the first gear disk being disposed inside the movable seat.

[0021] A clamping assembly for clamping and positioning the workpiece is installed above the table of the grinding machine, and the base of the clamping assembly is located on one side of the grinding platform. The position of the base of the clamping assembly can be adjusted by the first lead screw and the first gear disc.

[0022] The crank drive arm drives the connecting rod to rotate around the support base, thereby causing the connecting rod to drive the pressure block to press down and position the workpiece. The force transmission of the crank drive arm-connecting rod mechanism drives the pressure block to press down, converting the rotational motion into vertical pressure, resulting in higher positioning accuracy and stronger anti-interference ability. It can avoid the problem of uneven pressure caused by oil pressure fluctuations in traditional hydraulic or pneumatic pressing systems.

[0023] In one possible implementation, the protective cover of the worktable is further provided with two side positioning components. The two side positioning components include a left positioning block and a right positioning block that limit the lateral movement of the workpiece on both sides, and a left push rod and a right push rod that drive the left positioning block and the right positioning block to move laterally, respectively. The left push rod and / or the right push rod has a push rod base, and the push rod base is connected to a second driving component. The second driving component drives the push rod base to move laterally on the worktable.

[0024] The positions of the left and right pressure blocks can be adjusted by the second lead screw. Both the left and right pressure blocks are located in front of the positioning plate and below the pressure assembly. The left and right pressure blocks are used to position the two sides of the workpiece to be processed, ensuring that the position of the workpiece in the lateral direction matches the position of the grinding head, and ensuring the stable positioning of the workpiece in the lateral direction when the grinding head processes the workpiece.

[0025] In one possible implementation, the second drive assembly includes a second lead screw and a second gear disk that drives the second lead screw, the second gear disk being disposed within the push rod base.

[0026] In one possible implementation, a positioning plate is also included, which is vertically mounted on the worktable. The positioning plate is connected to the positioning plate driving platform via a positioning base plate. There is a grinding station for placing the workpiece between the positioning plate and the spindle box. The positioning plate driving platform is driven by a servo motor to move longitudinally, causing the positioning plate to move closer to or away from the grinding station. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of the grinding machine in an embodiment of this utility model;

[0028] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0029] Figure 3 for Figure 1 A top view of the grinding machine in the image;

[0030] Figure 4 for Figure 1 A schematic diagram of the structure of the grinding machine behind the hidden protective cover;

[0031] Figure 5 This is a schematic diagram of the pressing assembly and the two side positioning assemblies in an embodiment of this utility model;

[0032] Figure 6 This is a schematic diagram of the positioning plate structure in an embodiment of the present invention.

[0033] In the diagram, 1. Positioning plate; 11. Positioning base plate; 12. Triangular reinforcing plate; 13. Plate driving platform; 14. Extension plate; 2. Pressing assembly; 21. Connecting rod; 211. Hinge block; 22. Pressing block; 23. Support seat; 24. Crank drive arm; 25. Moving seat; 26. First lead screw; 3. Two side positioning assemblies; 31. Left positioning block; 311. Left push rod; 32. Right positioning block; 321. Right push rod; 33. Push rod base; 4. Spindle box; 5. Safety lock assembly; 6. Workpiece; 7. Worktable; 71. Protective cover; 72. Operating door; 73. Door handle; 81. First lock body; 82. Second lock body. Detailed Implementation

[0034] First, those skilled in the art should understand that the following embodiments are merely used to explain the technical principles of the embodiments of this application and are not intended to limit the scope of protection of the embodiments of this application. Those skilled in the art can make adjustments as needed to adapt to specific application scenarios.

[0035] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0036] In the embodiments of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0037] To make the objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments are described in detail below with reference to the accompanying drawings.

[0038] like Figures 1 to 6 As shown, this embodiment provides a grinding machine with a safety protection structure, including:

[0039] Worktable 7: set horizontally for supporting and fixing workpieces, including positioning components for multi-directional positioning of workpieces;

[0040] Grinding head: includes the grinding wheel and its drive device, and directly contacts the workpiece to perform grinding;

[0041] Spindle box 4: Longitudinally positioned relative to the worktable 7, used to drive the grinding wheel to rotate and provide grinding power.

[0042] The spindle box 4 is longitudinally slidable relative to the worktable 7, allowing the grinding head to extend into the grinding station on the worktable 7 to grind the workpiece.

[0043] The workbench 7 is equipped with a protective cover 71, and the grinding head and operating station are located inside the protective cover 71. The protective cover 71 is equipped with an operating door 72 and a safety lock 8. The operating door is equipped with a handle 73. The grinding head is driven by a grinding head drive device. The safety lock 8 includes a controller, a first lock body 81 installed on the protective cover 71, a second lock body 82 installed on the operating door 72, and a locking element for locking. The controller is electrically connected to the grinding head drive device and is used to receive start and stop signals from the grinding head drive device.

[0044] The locking element has a locked state in which the first lock body 81 and the second lock body 82 are locked together, and an unlocked state in which the first lock body 81 and the second lock body 82 can be displaced relative to each other; the controller is electrically connected to the locking element and is used to control the action of the locking element to realize the switching between the locked state and the unlocked state.

[0045] Specifically, the input terminal of the controller is electrically connected to the start / stop signal output terminal of the grinding head drive device; the output terminal of the controller is connected to the locking element through a control circuit. Those skilled in the art will understand that the locking element can be a latch, which is driven to move by the controller through the control circuit (a conventional setting of an electric lock).

[0046] The safety lock also includes a timing module electrically connected to the controller and the locking element, the timing module including an RC delay circuit or a 555 timer chip.

[0047] The controller receives and judges the start and stop signals of the grinding head drive device. The control circuit controls the power supply of the locking element according to the controller's judgment, so as to switch the locking element between the locked state and the unlocked state. The specific structure and control method of the locking element are not the innovation of this patent. You can refer to the mature electronic lock structure on the market and realize the locking and unlocking of the lock through the circuit.

[0048] Specifically, the unlocking / locking state switching of the safety lock can be implemented based on PLC control, electromagnetic coils, or other specific methods. Existing technologies already have products or circuit designs that implement such control, as well as mature products such as electric locks, which will not be elaborated here. One embodiment can be: when the grinding head drive device is in the power-on state, the controller receives the power-on signal and then controls the electromagnetic coil to continuously energize through the control circuit to generate a magnetic field, which attracts the magnetic latch (locking element) of the safety lock, thereby maintaining the locked state of the safety lock. When the grinding head drive device is in the power-off state, the controller receives the power-off signal, the control circuit no longer energizes the electromagnetic coil, and the latch can be unlocked manually / automatically.

[0049] The timing module is used to keep the locking element locked for a set time after the grinding head drive device stops running.

[0050] The timing module can use existing technologies such as RC delay circuits or 555 timer chips. How to achieve timing or delay is not the technical innovation of this patent.

[0051] This timing module can maintain the safety lock in a locked state for a period of time after the grinding head drive device stops. This is because after the grinding machine stops, the grinding wheel still needs one to three minutes to return to a stationary state. Opening the protective cover during this period still poses a safety hazard.

[0052] The safety lock is connected to the drive unit of the grinding head via a signal. When the drive unit is first turned on, even if the grinding wheel rotates slowly or cannot rotate due to a malfunction, the controller receives the start-up signal and uses the locking mechanism to keep the safety lock locked, preventing workers from approaching the grinding wheel and avoiding accidental activation. When the grinding wheel is rotating normally at high speed, the controller keeps the safety lock locked and prevents workers from approaching the grinding wheel. During the two-hour shutdown, the timing module is in the countdown period, and the safety lock remains locked, preventing workers from approaching the grinding wheel. After the two-hour shutdown, the grinding wheel stops rotating, the timing module finishes its countdown, and the controller no longer controls the locking mechanism to maintain the locked state, allowing the operating door 72 to open relative to the protective cover. This ensures worker safety, equipment safety compliance, and promotes the industry's progress towards the goal of "zero accidents."

[0053] The positioning components in the grinding machine include:

[0054] 1. A positioning plate 1 is connected to a positioning base plate 11 and a plate drive platform 13, with the positioning plate 1 perpendicularly connected to the positioning base plate 11. A triangular reinforcing plate 12 connects the positioning plate 1 and the positioning base plate 11. A grinding station is provided between the positioning plate 1 and the spindle box 4. The positioning plate drive platform 13 is driven to move by a servo motor, thereby moving the positioning plate 1 closer to or away from the grinding station. The relative position of the positioning plate 1 and the spindle box 4 in the longitudinal direction is adjusted by the servo motor, so that the positioning plate can engage with workpieces of different sizes, ensuring the stability of the workpiece when the grinding head is processing it.

[0055] The positioning plate is driven by a servo motor, eliminating the need for manual adjustment after machine shutdown. The servo motor-driven positioning plate moves precisely and stably, ensuring that the relative positional error between the positioning plate and the grinding wheel is less than the material's allowable tolerance. Furthermore, a triangular reinforcing plate is installed between the positioning plate and the servo motor to avoid vibration or machining errors in high-speed grinding scenarios, ensuring machining accuracy.

[0056] The positioning plate 1 is fixedly connected to the positioning base plate 11 and the triangular reinforcing plate 12. The triangular reinforcing plate 12 is a right triangle, and the two right-angled sides of the triangular reinforcing plate 12 are respectively connected to the positioning plate 1 and the positioning base plate 11.

[0057] The positioning plate 1 is detachably connected to an extension plate 14 on one side near the workpiece 6. The length of the extension plate 14 in the lateral direction is not less than the length of the grinding station in the lateral direction.

[0058] II. The pressing assembly 2 includes a support base 23, a crank drive arm 24, and a connecting rod 21 connected to the movable seat 25. One end of the connecting rod 21 is rotatably connected to the support base 23 via a hinge block 211, and the other end of the connecting rod 21 is hinged to a pressing block 22. The crank drive arm 24 is connected to the middle of the connecting rod 21. The crank drive arm 24 is connected to a power source via a crankshaft. The crank drive arm 24 drives the connecting rod 21 to rotate around the support base 23, thereby causing the pressing block 22 to move relative to the workpiece 6, so that the pressing block 22 has a pressing position where it presses down on the workpiece 6 and a separating position where it is lifted up and separated from the workpiece 6.

[0059] The first driving component drives the movable seat 25 to move laterally relative to the workpiece 6; the first driving component includes a first lead screw 26 laterally disposed on the worktable 7 and a gear disk that drives the first lead screw 26, the gear disk being disposed inside the movable seat 25.

[0060] A pressure assembly for clamping and positioning the workpiece is set above the worktable of the grinding machine, and the movable seat 25 of the pressure assembly is set on one side of the grinding station, and the pressure block 22 is set above the grinding station.

[0061] The crank-driven arm-connecting rod mechanism transmits force to push the pressure block down, converting rotational motion into vertical pressure. It has low requirements for the height of the processing space and high mechanical rigidity, which can avoid the problem of uneven pressure caused by oil pressure fluctuations in traditional hydraulic or pneumatic pressing systems.

[0062] 3. The two-sided positioning components 3 are used to limit the workpiece 6 laterally on both sides. They include a left positioning block 31 and a right positioning block 32, and a left push rod 311 and a right push rod 321 that drive the left positioning block 31 and the right positioning block 32 respectively. The left push rod 311 and / or the right push rod 321 are connected to the second driving component through the push rod base 33. The second driving component drives the push rod base 33 to move laterally on the worktable 7, thereby adjusting the position of the left positioning block 31 and the right positioning block 32 on the worktable 7 and the relative position of the left and right positioning blocks.

[0063] The second drive assembly includes a second lead screw arranged laterally on the worktable 7 and a gear disk that drives the second lead screw. The gear disk is disposed inside the push rod base 33. In this embodiment, the first lead screw 26 and the second lead screw are two lead screws arranged parallel to each other on the worktable 7. The movable seat 25 also serves as one of the push rod bases 33. The movable seat 25 and the push rod base 33 can move laterally independently on the worktable 7 to adjust the position of the pressing assembly and the positioning assemblies on both sides.

[0064] By adjusting the relative positions of the left and right pressure blocks, the size of the grinding station between the left and right pressure blocks can be adjusted, which is convenient for flexible adjustment according to the number or volume of workpieces.

[0065] The left and right pressure blocks are both located in front of the positioning plate and below the pressure assembly. The left and right pressure blocks are used to position the two sides of the workpiece to be processed, ensuring that the position of the workpiece in the lateral direction matches the position of the grinding head, and ensuring the stable lateral positioning of the workpiece when the grinding head processes the workpiece.

[0066] The aforementioned positioning plate 1, pressure assembly 2, and two side positioning assemblies 3 work together to form a grinding station that positions the workpiece in multiple directions, ensuring the stability of the workpiece during grinding.

[0067] In the description of the embodiments of this application, it should be noted that the terms "inner" and "outer" and other terms indicating direction or positional relationship are based on the direction or positional relationship shown in the drawings. This is only for the convenience of description and does not indicate or imply that the device or component must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this application.

[0068] In the description of this application, the reference to terms such as "this embodiment," "an embodiment," etc., means that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0069] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A safety protection structure for a grinding machine, comprising a protective cover (71) disposed on a worktable (7), wherein a grinding head and an operating station are disposed within the protective cover (71), and the grinding head is driven by a grinding head drive device, characterized in that: The protective cover (71) is provided with an operating door (72) and a safety lock. The safety lock includes a controller, a first lock body (81) installed on the protective cover (71), a second lock body (82) installed on the operating door (72), and a locking element for locking. The controller is electrically connected to the grinding head drive device and is used to receive the start and stop signals of the grinding head drive device; The locking member has a locked state in which the first lock body (81) and the second lock body (82) are locked to each other, and the locking member has an unlocked state in which the first lock body (81) and the second lock body (82) can be displaced relative to each other; the controller is electrically connected to the locking member and is used to control the action of the locking member to realize the switching between the locked state and the unlocked state.

2. The safety protection structure for the grinding machine according to claim 1, characterized in that: The safety lock also includes a timing module electrically connected to the controller and the locking element, the timing module including an RC delay circuit or a 555 timer chip.

3. The safety protection structure for the grinding machine according to claim 1 or 2, characterized in that: The worktable (7) is arranged horizontally, and the driving device of the grinding head includes a spindle box (4). The spindle box (4) is arranged longitudinally relative to the worktable (7), and the spindle box (4) is slidable relative to the worktable (7) in the longitudinal direction.

4. The safety protection structure for the grinding machine according to claim 3, characterized in that: A sliding adjustment assembly is provided between the spindle box (4) and the frame of the grinding machine; the sliding adjustment assembly includes a guide rail and a drive motor that drives the spindle box to slide longitudinally along the guide rail.

5. The safety protection structure for the grinding machine according to claim 1 or 2, characterized in that: The protective cover (71) is also provided with a pressing assembly (2). The pressing assembly (2) includes a support base (23), a crank drive arm (24), and a connecting rod (21) set on the worktable (7) of the grinding machine. One end of the connecting rod (21) is rotatably connected to the support base (23) through a hinge block (211), and the other end of the connecting rod (21) is hinged to a pressing block (22). The connecting rod (21) is connected to the crank drive arm (24) at the middle position. The crank drive arm (24) drives the connecting rod (21) to rotate relative to the support seat (23) to drive the pressure block (22) to move up and down relative to the workpiece (6) on the worktable (7), so that the pressure block (22) has a pressing position that presses the workpiece (6) downward and a separation position that lifts up and separates from the workpiece (6).

6. The safety protection structure for the grinding machine according to claim 5, characterized in that: It also includes a first drive assembly and a movable seat (25) disposed on the worktable (7), wherein the support seat (23) and the crank drive arm (24) are both disposed on the movable seat (25); The first driving component drives the moving seat (25) to move laterally relative to the workpiece (6); The first drive assembly includes a first lead screw (26) arranged laterally on the worktable (7) and a first gear disk that is in transmission cooperation with the first lead screw (26), the first gear disk being disposed in the movable seat (25).

7. The safety protection structure for the grinding machine according to claim 3, characterized in that: The protective cover (71) of the worktable (7) is also provided with two side positioning components (3). The two side positioning components (3) include a left positioning block (31) and a right positioning block (32) that limit the workpiece (6) on both sides laterally, and a left push rod (311) and a right push rod (321) that drive the left positioning block (31) and the right positioning block (32) to move laterally, respectively. The left push rod (311) and / or the right push rod (321) have a push rod base (33). The push rod base (33) is connected to a second drive component. The second drive component drives the push rod base (33) to move laterally on the worktable (7).

8. The safety protection structure for the grinding machine according to claim 7, characterized in that: The second drive assembly includes a second lead screw and a second gear disk that drives the second lead screw, the second gear disk being disposed within the push rod base (33).

9. The safety protection structure for the grinding machine according to claim 3, characterized in that: It also includes a positioning plate (1) vertically set on the worktable (7), the positioning plate (1) being connected to the plate drive platform (13) via a positioning base plate (11), and a grinding station for placing the workpiece (6) is provided between the positioning plate (1) and the spindle box (4); The backing plate driving platform (13) is driven by a servo motor to move longitudinally, causing the positioning backing plate (1) to move closer to or further away from the grinding station.

Images