Monitoring device for detecting abnormal operation of cutter

Abstract

The monitoring device comprises the cutter and a fixing block, the fixing block is located on the outer surface of the upper end of the cutter, limiting holes are formed in the left side and the right side of the outer surface of the upper end of the cutter, and first threaded holes are formed in the upper portions of the outer surfaces of the two sides of the cutter. Anti-loosening assemblies are mounted on the left side and the right side of the outer surface of the upper end of the fixing block, each anti-loosening assembly comprises a sliding hole, a movable shaft, a limiting block, a protective cover and a belleville spring, mounting blocks are fixedly mounted at the four corners of the outer surface of the lower end of the fixing block, and second threaded holes are formed in the upper side and the lower side of the outer surface of one side of each mounting block. Fixing bolts are arranged between the mounting blocks and the cutters, the pressure sensors are arranged, and the pressure sensors are externally connected with a controller, so that a load change curve of each cutter, a standard curve obtained through sampling and a combined judgment line can be displayed in real time; and the real-time load change trend of the cutter in the cutting process can be completely checked, and timely alarm can be given when problems occur.

Description

Technical Field

[0001] The utility model relates to the technical field of industrial numerical control, and specifically relates to a monitoring device for detecting abnormal operation of a tool. Background Technique

[0002] In the prior art, during the metal cutting process, if the wear and breakage of the tool are not detected in time, it will lead to the interruption of the cutting process, and then cause the workpiece to be scrapped or the machine tool to be damaged, or even stop the entire production operation, resulting in great economic losses. The tool abnormality is not limited to the wear and breakage states of the tool, but also includes abnormal situations such as chipping, tool breakage, and dry cutting.

[0003] If the abnormal operation of the tool is not detected in time, it will cause relatively large economic losses. Moreover, in the prior art, when installing the tool, it is installed by bolts. After using for a period of time, the bolts become loose due to vibration and dynamic load, affecting the stability of the tool installation.

[0004] Therefore, we propose a monitoring device for detecting abnormal operation of a tool. Content of the Utility Model

[0005] (I) Technical Problems to be Solved

[0006] Aiming at the deficiencies of the prior art, the utility model provides a monitoring device for detecting abnormal operation of a tool, which has the monitoring of the abnormal operation of the tool, and is of great significance for improving the processing quality and precision, prolonging the service life of the tool, reducing the failure rate of the production machine tool and the product rejection rate, and improving economic benefits. Moreover, it has the advantages of improving the stability after the tool is installed, etc., and can effectively solve the problems in the background technique.

[0007] (II) Technical Solution

[0008] To achieve the above object, the technical solution adopted by the utility model is: a monitoring device for detecting abnormal operation of a tool, including a tool and a fixing block. The fixing block is located on the upper outer surface of the tool. Limiting holes are opened on the left and right sides of the upper outer surface of the tool. First threaded holes are opened on the upper parts of the outer surfaces on both sides of the tool. Anti-loosening components are installed on the left and right sides of the upper outer surface of the fixing block. The anti-loosening components include sliding holes, movable shafts, limiting blocks, protective covers and disc springs. Mounting blocks are fixedly installed at the four corners of the lower outer surface of the fixing block. Second threaded holes are opened on the upper and lower sides of the outer surface of one side of the mounting block. Fixing bolts are arranged between the mounting block and the tool. A pressure sensor is fixedly installed in the middle of the upper outer surface of the fixing block.

[0009] Preferably, the fixing bolt is threadedly connected between the second threaded hole and the first threaded hole.

[0010] Preferably, the outer wall of the lower part of the movable shaft is inserted into the limiting hole.

[0011] Preferably, the number of the anti-loosening components is two groups. The sliding holes are opened in the middle of the left and right ends of the upper outer surface of the fixed block. The movable shaft penetrates through the movable shaft. The protective cover is located above the sliding holes. The lower outer surface of the protective cover is fixedly connected to the upper outer surface of the fixed block. The limiting block and the disc spring are both located inside the protective cover.

[0012] Preferably, the upper outer surface of the movable shaft is fixedly connected to the middle of the lower outer surface of the limiting block. The disc spring is fixedly installed between the upper outer surface of the limiting block and the top of the inner cavity of the protective cover.

[0013] Preferably, the outer wall of the movable shaft is slidably connected to the sliding hole. The outer wall of the limiting block is slidably connected to the inner wall of the protective cover. The upper outer surface of the limiting block is elastically connected to the upper part of the inner cavity of the protective cover through the disc spring.

[0014] (III) Beneficial effects

[0015] Compared with the prior art, the present utility model provides a monitoring device for detecting abnormal operation of a tool, having the following beneficial effects:

[0016] 1. For the monitoring device for detecting abnormal operation of a tool, through the arranged pressure sensor, the pressure sensor is externally connected to a controller, which can display the load change curve of each tool in real time, obtain the standard curve and the combined judgment line by sampling, and completely view the real-time load change trend of the tool during cutting and give an alarm in time when a problem occurs.

[0017] 2. For the monitoring device for detecting abnormal operation of a tool, through the arranged anti-loosening components, the looseness after the connection of the fixing bolts can be eliminated, and the stability after the installation of the tool can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of a monitoring device for detecting abnormal operation of a tool according to the present utility model.

[0019] Figure 2 It is a schematic diagram of the structure of a tool in a monitoring device for detecting abnormal operation of a tool according to the present utility model.

[0020] Figure 3 It is a schematic diagram of a partial structure of a monitoring device for detecting abnormal operation of a tool according to the present utility model.

[0021] Figure 4 It is a partial side view sectional view of a monitoring device for detecting abnormal operation of a tool according to the present utility model.

[0022] In the figure: 1. Cutting tool; 2. Fixed block; 3. Mounting block; 4. Fixing bolt; 5. Pressure sensor; 6. Anti-loosening component; 7. First threaded hole; 8. Limit hole; 9. Second threaded hole; 10. Slide hole; 11. Movable shaft; 12. Limit block; 13. Protective cover; 14. Disc spring. Specific implementation manner

[0023] In order to make the technical means, creative features, achieved purposes and functions realized by the present utility model easy to understand, the present utility model will be further described below in conjunction with specific implementation manners.

[0024] This embodiment is a monitoring device for detecting abnormal operation of a cutting tool.

[0025] As Figures 1-4 shown, it includes a cutting tool 1 and a fixed block 2. The fixed block 2 is located on the outer surface of the upper end of the cutting tool 1. Limit holes 8 are opened on the left and right sides of the outer surface of the upper end of the cutting tool 1. First threaded holes 7 are opened on the upper parts of the outer surfaces on both sides of the cutting tool 1. Anti-loosening components 6 are installed on the left and right sides of the outer surface of the upper end of the fixed block 2. The anti-loosening component 6 includes a slide hole 10, a movable shaft 11, a limit block 12, a protective cover 13 and a disc spring 14. Mounting blocks 3 are fixedly installed at the four corners of the outer surface of the lower end of the fixed block 2. Second threaded holes 9 are opened on the upper and lower sides of the outer surface of one side of the mounting block 3. A fixing bolt 4 is provided between the mounting block 3 and the cutting tool 1. A pressure sensor 5 is fixedly installed in the middle of the outer surface of the upper end of the fixed block 2.

[0026] The fixing bolt 4 is threadedly connected between the second threaded hole 9 and the first threaded hole 7; the outer wall of the lower part of the movable shaft 11 is inserted into the limit hole 8; the number of anti-loosening components 6 is two groups. The slide hole 10 is opened in the middle of the left and right ends of the outer surface of the upper end of the fixed block 2. The movable shaft 11 penetrates through the movable shaft 11. The protective cover 13 is located above the slide hole 10. The lower outer surface of the protective cover 13 is fixedly connected to the upper outer surface of the fixed block 2. Both the limit block 12 and the disc spring 14 are located inside the protective cover 13; the upper outer surface of the movable shaft 11 is fixedly connected to the middle of the lower outer surface of the limit block 12. The disc spring 14 is fixedly installed between the upper outer surface of the limit block 12 and the top of the inner cavity of the protective cover 13; the outer wall of the movable shaft 11 is slidably connected to the slide hole 10, the outer wall of the limit block 12 is slidably connected to the inner wall of the protective cover 13, and the upper outer surface of the limit block 12 is elastically connected to the upper part of the inner cavity of the protective cover 13 through the disc spring 14.

[0027] It should be noted that the present utility model is a monitoring device for detecting abnormal operation of a cutting tool. When the fixing block 2 is installed with the cutting tool 1, the fixing bolt 4 is threadedly connected between the first threaded hole 7 and the second threaded hole 9 in the mounting block 3. The provided anti-loosening component 6, when installing the cutting tool 1, the movable shaft 11 in the anti-loosening component 6 is inserted into the limiting hole 8, and the movable shaft 11 slides along the sliding hole 10. The movable shaft 11 drives the limiting block 12 to squeeze the disc spring 14 inside the protective cover 13. When the fixing bolt 4 is threadedly connected between the second threaded hole 9 and the first threaded hole 7, the disc spring 14 is in a squeezed state, and the axial tension of the fixing bolt 4 is enhanced by releasing the reaction force, thereby increasing the friction force, generating a resistance moment, and further playing a role in preventing loosening; the provided pressure sensor 5, when the cutting tool 1 exerts pressure on an external tool, the pressure sensor 5 can monitor the magnitude of the pressure exerted by the cutting tool 1. The pressure sensor 5 is externally connected to a controller, which can display the load change curve of each cutting tool 1 in real time, the sampled standard curve and the combined judgment line, and completely view the real-time load change trend and problems of the cutting tool during cutting. The alarm is controlled by an external controller to give an alarm for feedback.

[0028] It should be noted that in this article, relational terms such as first and second (No. 1, No. 2) are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including the said element.

[0029] The above shows and describes the basic principles, main features and advantages of the present utility model. Those skilled in the art of this industry should understand that the present utility model is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed.

Claims

1. A monitoring device for detecting abnormal operation of a tool, comprising a tool (1) and a fixing block (2), characterized in that: The fixing block (2) is located on the upper outer surface of the tool (1), and limit holes (8) are provided on the left and right sides of the upper outer surface of the tool (1). The upper part of the outer surfaces of both sides of the tool (1) is provided with first threaded holes (7). Anti-loosening components (6) are installed on the left and right sides of the upper outer surface of the fixing block (2), and the anti-loosening components (6) include a sliding hole (10), a movable shaft (11), a limit block (12), a protective cover (13) and a disc spring (14). The four corners of the lower outer surface of the fixing block (2) are fixedly installed with mounting blocks (3), and the upper and lower sides of the outer surface of one side of the mounting block (3) are provided with second threaded holes (9). A fixing bolt (4) is provided between the mounting block (3) and the tool (1), and a pressure sensor (5) is fixedly installed in the middle of the upper outer surface of the fixing block (2).

2. A monitoring device for detecting abnormal operation of a tool according to claim 1, characterized in that: The fixing bolt (4) is threadedly connected between the second threaded hole (9) and the first threaded hole (7).

3. A monitoring device for detecting abnormal operation of a tool according to claim 2, characterized in that: The outer wall of the lower part of the movable shaft (11) and the limiting hole (8) are plugged into each other.

4. A monitoring device for detecting abnormal operation of a tool according to claim 3, characterized in that: The number of the anti-loosening components (6) is two groups, the sliding hole (10) is opened in the middle of the left and right ends of the upper outer surface of the fixed block (2), the movable shaft (11) passes through the movable shaft (11), the protective cover (13) is located at the upper part of the sliding hole (10), the lower outer surface of the protective cover (13) is fixedly connected to the upper outer surface of the fixed block (2), and the limit block (12) and the disc spring (14) are both located inside the protective cover (13).

5. A monitoring device for detecting abnormal operation of a tool according to claim 4, characterized in that: The upper outer surface of the movable shaft (11) is fixedly connected to the middle of the lower outer surface of the limit block (12), and the disc spring (14) is fixedly installed between the upper outer surface of the limit block (12) and the top of the inner cavity of the protective cover (13).

6. A monitoring device for detecting abnormal operation of a tool according to claim 5, characterized in that: The outer wall of the movable shaft (11) is slidably connected to the sliding hole (10), the outer wall of the limit block (12) is slidably connected to the inner wall of the protective cover (13), and the upper outer surface of the limit block (12) is elastically connected to the upper part of the inner cavity of the protective cover (13) via a disc spring (14).

Images