Numerical control grinding machine with automatic measuring mechanism

Abstract

The utility model relates to the technical field of numerical control grinding machines, in particular to a numerical control grinding machine with an automatic measuring mechanism, which comprises a bottom frame, an automatic measuring component is arranged above the bottom frame, the automatic measuring component comprises two vertical plates which are fixedly connected to the upper end of the bottom frame and distributed front and back, and a screw rod is rotatably connected between the two vertical plates. The outer wall of the lead screw is in threaded connection with a U-shaped frame, the upper end of the U-shaped frame is fixedly connected with an L-shaped frame, the left end of the L-shaped frame is provided with a first electric push rod, the output end of the first electric push rod penetrates through the L-shaped frame and is fixedly connected with a supporting plate, and the laser range finder monitors the macroscopic size of a workpiece in real time. The contact type probe accurately controls contact force and collects microscopic contour data through the pressure sensor, when dimensional deviation is detected, the controller immediately adjusts the second electric push rod to drive the grinding disc to correct the feeding amount, frequent shutdown measurement is not needed, and the grinding efficiency and precision are improved.

Description

Technical Field

[0001] This utility model relates to the field of CNC grinding machine technology, and specifically discloses a CNC grinding machine with an automatic measuring mechanism. Background Technology

[0002] CNC grinding machines, as high-precision machining equipment, are widely used in the field of machinery manufacturing for precision grinding of workpiece surfaces.

[0003] A CNC grinding machine, patent number CN220178978U, includes an adjustment component. A lifting component is movably connected to the upper end of the adjustment component. A grinding component is movably connected inside the lifting component. The adjustment component includes a base plate, a receiving plate fixedly connected to the upper end of the base plate, and a guide plate fixedly connected to the upper end of the receiving plate. This invention, through the combination of the adjustment component, the lifting component, and the grinding component, allows for the adjustment of the height and distance of the grinding disc according to the size of the workpiece, thereby enabling the processing of workpieces of different sizes and enhancing the versatility of the CNC grinding machine.

[0004] The aforementioned device can perform grinding operations on workpieces of different sizes by adjusting the components. However, it lacks an automatic measurement component, making it impossible to monitor changes in workpiece dimensions in real time during grinding. This necessitates repeated machine stops and reliance on manual offline inspection tools such as outside micrometers and profilometers, resulting in reduced processing efficiency. Therefore, a CNC grinding machine with an automatic measurement mechanism is needed to solve this problem. Utility Model Content

[0005] This invention proposes a CNC grinding machine with an automatic measuring mechanism. The contact probe suppresses grinding vibration through a piezoelectric ceramic damper, accurately acquiring the micro-contour data of the workpiece. A laser rangefinder monitors macroscopic dimensional changes in real time. The dual-sensor data fusion eliminates the need for frequent machine stops for measurement, improving grinding efficiency and accuracy.

[0006] This utility model is implemented as follows: a CNC grinding machine with an automatic measuring mechanism includes a base frame, and an automatic measuring component is arranged on the top of the base frame;

[0007] The automatic measurement component includes two vertical plates fixedly connected to the upper end of the base frame, arranged front and rear. A lead screw is rotatably connected between the two vertical plates. A U-shaped frame is threaded onto the outer wall of the lead screw. An L-shaped frame is fixedly connected to the upper end of the U-shaped frame. A first electric actuator is installed on the left end of the L-shaped frame. The output end of the first electric actuator passes through the L-shaped frame and is fixedly connected to a support plate. A pressure sensor is installed on the right end of the support plate. A mounting plate is fixedly connected to the right end of the pressure sensor. A piezoelectric ceramic shock absorber is installed on the right end of the mounting plate. A mounting shaft is fixedly connected to the right end of the piezoelectric ceramic shock absorber. A contact probe is fixedly connected to the outer wall of the mounting shaft. A laser rangefinder is installed at the top of the inner wall of the L-shaped frame.

[0008] The upper end of the U-shaped frame is equipped with a grinding assembly.

[0009] As a preferred embodiment of the present invention, a CNC grinding machine with an automatic measuring mechanism includes a grinding assembly comprising a rectangular plate fixedly connected to the upper end of a U-shaped frame, an auxiliary plate fixedly connected to the upper end of the rectangular plate, a second electric push rod installed at the right end of the auxiliary plate, the output end of the second electric push rod passing through the auxiliary plate and fixedly connected to a movable frame, a first motor installed inside the movable frame, and the output end of the first motor passing through the movable frame and fixedly connected to a grinding disc.

[0010] As a preferred embodiment of the CNC grinding machine with an automatic measuring mechanism of the present invention, a clamping mechanism is provided above the base frame. The clamping mechanism includes two vertical plates distributed front and rear to be fixedly connected to the upper end of the base frame. A second motor is installed at the front end of the front and rear vertical plates. The output end of the second motor passes through the front vertical plate and is fixedly connected to a first clamping plate. A third electric push rod is installed at the rear end of the rear vertical plate. The output end of the third electric push rod passes through the front vertical plate and is rotatably connected to a second clamping plate.

[0011] As a preferred embodiment of the present invention, a CNC grinding machine with an automatic measuring mechanism is provided, wherein a third motor with its output end fixedly connected to a lead screw is installed at the front end of the vertical plate.

[0012] In a preferred embodiment of this utility model of a CNC grinding machine with an automatic measuring mechanism, the grinding disc is located to the right front of the contact probe.

[0013] In a preferred embodiment of the present invention, a CNC grinding machine with an automatic measuring mechanism, the bottom end of the U-shaped frame is fitted with the upper end of the base frame.

[0014] As a preferred embodiment of the present invention, a CNC grinding machine with an automatic measuring mechanism is provided with a controller installed at the front end of the front vertical plate.

[0015] The beneficial effects of this utility model are:

[0016] Dual-mode measurement and collaborative control: The laser rangefinder monitors the macroscopic dimensions of the workpiece (such as diameter and thickness) in real time, while the contact probe precisely controls the contact force through a pressure sensor and collects microscopic contour data. When a dimensional deviation is detected, the controller immediately adjusts the second electric push rod to drive the grinding disc to correct the feed rate. This eliminates the need for frequent machine stops for measurement, improving grinding efficiency and accuracy. Attached Figure Description

[0017] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0018] Figure 1 This is an overall structural diagram of a CNC grinding machine with an automatic measuring mechanism according to the present invention.

[0019] Figure 2 This is a right-side structural view of the present invention.

[0020] Figure 3 This is a top view of the structure of this utility model;

[0021] Figure 4 This is a partial structural diagram of the present invention.

[0022] The markings in the diagram are: 1. Base frame; 2. Vertical plate; 3. Lead screw; 4. U-shaped frame; 5. Rectangular plate; 6. L-shaped frame; 7. First electric actuator; 8. Support plate; 9. Pressure sensor; 10. Mounting plate; 11. Piezoelectric ceramic shock absorber; 12. Mounting shaft; 13. Contact probe; 14. Auxiliary plate; 15. Second electric actuator; 16. Moving frame; 17. First motor; 18. Grinding disc; 19. Third motor; 20. Second motor; 21. First clamping disc; 22. Third electric actuator; 23. Second clamping disc; 24. Laser rangefinder; 25. Vertical plate. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and specific embodiments to aid in understanding its content. Unless otherwise specified, the methods used in this invention are conventional methods; the raw materials and apparatus used, unless otherwise specified, are conventional commercially available products.

[0024] Please see Figure 1-4 A CNC grinding machine with an automatic measuring mechanism includes a base frame 1, and an automatic measuring component is arranged above the base frame 1;

[0025] The automatic measurement component includes two vertical plates 2 fixedly connected to the upper end of the base frame 1, which are distributed front and back. A lead screw 3 is rotatably connected between the two vertical plates 2. A U-shaped frame 4 is threadedly connected to the outer wall of the lead screw 3. An L-shaped frame 6 is fixedly connected to the upper end of the U-shaped frame 4. A first electric push rod 7 is installed on the left end of the L-shaped frame 6. The output end of the first electric push rod 7 passes through the L-shaped frame 6 and is fixedly connected to a support plate 8. A pressure sensor 9 is installed on the right end of the support plate 8. A mounting plate 10 is fixedly connected to the right end of the pressure sensor 9. A piezoelectric ceramic shock absorber 11 is installed on the right end of the mounting plate 10. A mounting shaft 12 is fixedly connected to the right end of the piezoelectric ceramic shock absorber 11. A contact probe 13 is fixedly connected to the outer wall of the mounting shaft 12. A laser rangefinder 24 is installed at the top of the inner wall of the L-shaped frame 6.

[0026] The upper end of the U-shaped frame 4 is equipped with a grinding component.

[0027] In this embodiment: the third motor 19 drives the lead screw 3 to rotate, which in turn moves the U-shaped frame 4. At the same time, the first motor 17 drives the grinding disc 18 to rotate at high speed. When the U-shaped frame 4 moves, it drives the grinding assembly to move from back to front. During the grinding process, the laser rangefinder 24 moves accordingly and detects the changes in the macroscopic dimensions of the workpiece, which are transmitted to the controller in real time. The piezoelectric ceramic damper 11 cancels the vibration interference during the grinding process. The first electric push rod 7 pushes the support plate 8 to the right. The pressure sensor 9 detects the contact pressure between the contact probe 13 and the workpiece and collects microscopic contour data. According to the error model, the controller starts the second electric push rod 15 to adjust the position of the grinding disc 18 and adjusts the feed path for the next grinding cycle to avoid overcutting.

[0028] As a technical optimization of this utility model, the grinding assembly includes a rectangular plate 5 fixedly connected to the upper end of the U-shaped frame 4. An auxiliary plate 14 is fixedly connected to the upper end of the rectangular plate 5. A second electric push rod 15 is installed at the right end of the auxiliary plate 14. The output end of the second electric push rod 15 passes through the auxiliary plate 14 and is fixedly connected to a movable frame 16. A first motor 17 is installed inside the movable frame 16. The output end of the first motor 17 passes through the movable frame 16 and is fixedly connected to a grinding disc 18.

[0029] In this embodiment: the moving frame 16 can be moved by the second electric push rod 15, and the grinding disc 18 can be rotated by the first motor 17.

[0030] As a technical optimization of this utility model, a clamping mechanism is provided above the base frame 1. The clamping mechanism includes two upright plates 25 that are fixedly connected to the upper end of the base frame 1 and distributed front to back. A second motor 20 is installed at the front end of the front upright plate 25. The output end of the second motor 20 passes through the front upright plate 25 and is fixedly connected to a first clamping plate 21. A third electric push rod 22 is installed at the rear end of the rear upright plate 25. The output end of the third electric push rod 22 passes through the front upright plate 25 and is rotatably connected to a second clamping plate 23.

[0031] In this embodiment, the second motor 20 can drive the first clamping disk 21, the clamped workpiece, and the second clamping disk 23 to rotate.

[0032] As a technical optimization of this utility model, a third motor 19 with its output end fixedly connected to the lead screw 3 is installed at the front end of the front vertical plate 2.

[0033] In this embodiment, the lead screw 3 can be driven to rotate by the third motor 19.

[0034] As a technical optimization of this utility model, the abrasive disc 18 is located in front of the right side of the contact probe 13.

[0035] In this embodiment: the contact probe 13 detects the data after the workpiece is ground.

[0036] As a technical optimization of this utility model, the bottom end of the U-shaped frame 4 is attached to the top end of the base frame 1.

[0037] In this embodiment, the bottom end of the U-shaped frame 4 is attached to the upper end of the base frame 1 to prevent the U-shaped frame 4 from rotating axially.

[0038] As a technical optimization of this utility model, a controller is installed at the front end of the front end plate 25.

[0039] In this embodiment: the controller is electrically connected to the first motor 17, the second motor 20, the third motor 19, the first electric actuator 7, the second electric actuator 15, the third electric actuator 22, the contact probe 13, the pressure sensor 9, and the laser rangefinder 24. The controller can control the operation of the first motor 17, the second motor 20, the third motor 19, the first electric actuator 7, the second electric actuator 15, the third electric actuator 22, the contact probe 13 (model Renishaw SP25M), the pressure sensor 9 (model Honeywell FSG15N1A), and the laser rangefinder 24 (model Keyence LK-G5000).

[0040] The working principle and usage process of this utility model are as follows: During use, the workpiece to be processed is placed between the first clamping plate 21 and the second clamping plate 23. The third electric push rod 22 pushes the second clamping plate 23 to move axially, cooperating with the first clamping plate 21 to clamp the workpiece. The second motor 20 drives the first clamping plate 21 to rotate, achieving workpiece fixation and rotation. The third motor 19 drives the lead screw 3 to rotate, causing the U-shaped frame 4 to move. Simultaneously, the first motor 17 drives the grinding disc 18 to rotate at high speed. When the U-shaped frame 4 moves, it drives the grinding assembly to move from back to front. During the grinding process, the laser rangefinder 24 moves accordingly, simultaneously detecting changes in the macroscopic dimensions of the workpiece and transmitting the data to the controller in real time. The piezoelectric ceramic damper 11 counteracts vibration interference during the grinding process. The first electric push rod 7 pushes the support plate 8 to the right. The pressure sensor 9 detects the contact pressure between the contact probe 13 and the workpiece and collects microscopic contour data. Based on the error model, the controller activates the second electric push rod 15 to adjust the position of the grinding disc 18 and adjust the next grinding feed path to avoid overcutting.

[0041] In the description of this utility model, it should be understood that the terms "left", "right", "up", "down", "top", "bottom", "front", "back", "inner", "outer", "back", "middle", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0042] However, the above description is only a specific embodiment of this utility model and should not be construed as limiting the scope of implementation of this utility model. Therefore, any substitution of equivalent components or equivalent changes and modifications made in accordance with the scope of protection of this utility model should still fall within the scope of the claims of this utility model.

Claims

1. A CNC grinding machine with an automatic measuring mechanism, comprising a base frame (1), characterized in that: An automatic measurement component is provided above the base frame (1); The automatic measuring component includes two vertical plates (2) fixedly connected to the upper end of the base frame (1), which are distributed front to back. A lead screw (3) is rotatably connected between the two vertical plates (2). A U-shaped frame (4) is threaded onto the outer wall of the lead screw (3). An L-shaped frame (6) is fixedly connected to the upper end of the U-shaped frame (4). A first electric actuator (7) is installed on the left end of the L-shaped frame (6). The output end of the first electric actuator (7) passes through the L-shaped frame (6) and is fixedly connected to a support plate (8). A pressure sensor (9) is installed on the right end of the support plate (8), and a mounting plate (10) is fixedly connected to the right end of the pressure sensor (9). A piezoelectric ceramic shock absorber (11) is installed on the right end of the mounting plate (10), and a mounting shaft (12) is fixedly connected to the right end of the piezoelectric ceramic shock absorber (11). A contact probe (13) is fixedly connected to the outer wall of the mounting shaft (12), and a laser rangefinder (24) is installed on the top of the inner wall of the L-shaped frame (6). The upper end of the U-shaped frame (4) is provided with a grinding component.

2. The CNC grinding machine with an automatic measuring mechanism according to claim 1, characterized in that: The grinding assembly includes a rectangular plate (5) fixedly connected to the upper end of a U-shaped frame (4). An auxiliary plate (14) is fixedly connected to the upper end of the rectangular plate (5). A second electric push rod (15) is installed at the right end of the auxiliary plate (14). The output end of the second electric push rod (15) passes through the auxiliary plate (14) and is fixedly connected to a movable frame (16). A first motor (17) is installed inside the movable frame (16). The output end of the first motor (17) passes through the movable frame (16) and is fixedly connected to a grinding disc (18).

3. A CNC grinding machine with an automatic measuring mechanism according to claim 1, characterized in that: A clamping mechanism is provided above the base frame (1). The clamping mechanism includes two upright plates (25) that are fixedly connected to the upper end of the base frame (1) and distributed front and rear. A second motor (20) is installed at the front end of the front and rear upright plates (25). The output end of the second motor (20) passes through the front upright plate (25) and is fixedly connected to a first clamping plate (21). A third electric push rod (22) is installed at the rear end of the rear upright plate (25). The output end of the third electric push rod (22) passes through the front upright plate (25) and is rotatably connected to a second clamping plate (23).

4. A CNC grinding machine with an automatic measuring mechanism according to claim 1, characterized in that: A third motor (19) with its output end fixedly connected to the lead screw (3) is installed at the front end of the vertical plate (2).

5. A CNC grinding machine with an automatic measuring mechanism according to claim 2, characterized in that: The abrasive disc (18) is located to the right front of the contact probe (13).

6. A CNC grinding machine with an automatic measuring mechanism according to claim 1, characterized in that: The bottom end of the U-shaped frame (4) is attached to the top end of the base frame (1).

7. A CNC grinding machine with an automatic measuring mechanism according to claim 3, characterized in that: A controller is installed at the front end of the front-end plate (25).

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