Cutter wear detection device of automobile die numerical control machine tool

Abstract

The utility model relates to the technical field of machine tool processing detection, and particularly discloses a cutter wear detection device of an automobile die numerical control machine tool, which comprises an adjusting support and an optical probe, a first support arm is arranged at the upper end of the optical probe, a second support arm is arranged on one side of the first support arm, and a cleaning cylinder is arranged at the lower end of the second support arm. A containing groove is formed in the end, facing the optical probe, of the cleaning barrel, a brush plate structure is arranged in the containing groove, a driving assembly used for controlling the first supporting arm to rotate and moving the lens end of the optical probe to the position right in front of the cleaning barrel is arranged on the adjusting support, and a push rod assembly is arranged at the end, away from the optical probe, of the cleaning barrel. The driving assembly controls the first supporting arm to rotate, the lens end of the optical probe can be overturned to the position right in front of the cleaning barrel to be folded, the optical probe can be self-cleaned through the brush plate structure after being folded, and the maintenance difficulty of the detection device on the lathe is effectively lowered.

Description

Technical Field

[0001] The utility model relates to the technical field of machine tool processing detection, in particular to a tool wear detection device for an automobile mold numerical control machine tool. Background Art

[0002] CNC machine tools have become the main processing equipment in the manufacturing industry due to their high processing efficiency and centralized process. The tool is the direct actuator of the machine tool. During the processing, it is in direct contact with the workpiece and chips, and is subject to severe friction and impact, which is very easy to cause wear, affecting the performance and processing quality of the machine tool. According to statistics, the downtime of machine tools caused by tool wear accounts for 20% of the total downtime, and an effective monitoring system can improve the processing efficiency by 10%~50% and reduce the production cost by 10%~40%. Therefore, it is of great significance to realize online monitoring of tools.

[0003] At present, tool wear detection can be roughly divided into two methods: direct detection and indirect detection. Among them, the direct detection method based on vision is to use a visual sensor to obtain the surface image of the tool, extract the wear area based on image processing technology, and measure the wear. This method is simple to use, the results are accurate, and it is not easily affected by external conditions and is not limited by processing conditions. When the visual sensor obtains the surface image of the tool, it needs to be fixed to one side of the tool through a slide or bracket structure. Therefore, during the turning process, dust and debris will fall on the lens end of the visual sensor, affecting the clarity of the image transmitted by the visual sensor. The manual maintenance method requires irregular in-depth cleaning inside the machine tool, and the maintenance process is cumbersome. Utility Model Content

[0004] In view of the above problems, the utility model proposes a tool wear detection device for an automobile mold CNC machine tool, which is used to solve the shortcomings of the existing tool wear detection device, in which dust and debris fall on the lens end of the visual sensor during the turning process, affecting the clarity of the graphics transmitted by the visual sensor, and the manual maintenance method requires irregular in-depth cleaning inside the machine tool, resulting in a cumbersome maintenance process.

[0005] To achieve the purpose of the utility model, the utility model is implemented by the following technical solutions: a tool wear detection device for an automobile mold CNC machine tool, comprising an adjustment bracket and an optical probe, a first arm is provided at the upper end of the optical probe, and the upper end of the first arm is rotatably connected to the adjustment bracket;

[0006] A second arm is provided on one side of the first arm, the upper end of the second arm is detachably connected to the adjustment bracket, a cleaning cylinder is provided at the lower end of the second arm, a storage groove is provided at one end of the cleaning cylinder facing the optical probe, and a brush plate structure is provided in the storage groove;

[0007] The adjusting bracket is provided with a driving assembly for controlling the rotation of the first arm and moving the optical probe lens end to the front of the cleaning cylinder. The cleaning cylinder is provided with a push rod assembly at the end away from the optical probe for pushing the brush plate structure to contact the optical probe lens end.

[0008] Further improvement is that: the adjustment bracket includes a first adjustment arm and a first electric push rod, the upper end of the first adjustment arm is provided with a mounting bracket, the lower end of the first adjustment arm is rotatably connected to the mounting end of the first electric push rod, the outer side of the first adjustment arm is provided with a first motor for controlling the rotation of the first electric push rod, the output end of the first electric push rod is rotatably connected to the second adjustment arm provided at the upper end of the first support arm, and the outer side of the first electric push rod is provided with a second motor for controlling the rotation of the second adjustment arm.

[0009] A further improvement is that the driving assembly includes a fourth motor, a mounting end of the fourth motor is fixedly connected to the lower end of the second adjusting arm, and an output end of the fourth motor is fixedly connected to the upper end of the first support arm.

[0010] A further improvement is that the push rod assembly includes a second electric push rod, the mounting end of the second electric push rod is fixedly connected to the end of the cleaning tube away from the optical probe, and the output end of the second electric push rod penetrates into the storage groove and is fixedly connected to the brush plate structure.

[0011] A further improvement is that the brush plate structure includes a brush plate and a fourth motor arranged in the storage groove, the mounting end of the fourth motor is fixedly connected to the output end of the second electric push rod, and the output end of the fourth motor is fixedly connected to the brush plate.

[0012] A further improvement is that an assembly frame is provided at the upper end of the second arm, the assembly frame is fixedly connected to the second arm, a fixing bolt is installed at the upper end of the assembly frame, the fixing bolt passes through the assembly frame and is threadedly connected to a threaded groove provided at the lower end of the first electric push rod.

[0013] The beneficial effects of the utility model are as follows: the driving component can flip the lens end of the optical probe to the front of the cleaning tube for retraction by controlling the rotation of the first arm. After the optical probe is retracted, it can complete self-cleaning through the brush plate structure, effectively reducing the difficulty of maintaining the detection device on the lathe. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0015] Figure 1 It is a structural diagram of the optical probe in the utility model when it is in an unfolded state.

[0016] Figure 2 It is a structural diagram of the optical probe in the utility model when it is in a retracted state.

[0017] Figure 3 It is a structural diagram of the interior of the cleaning cylinder in the utility model.

[0018] Among them: 1. mounting bracket; 2. first adjusting arm; 3. first motor; 4. first electric push rod; 5. second adjusting arm; 6. second motor; 7. third motor; 8. first support arm; 9. optical probe; 10. assembly frame; 11. second support arm; 12. cleaning cylinder; 13. second electric push rod; 14. fixing bolt; 15. brush plate; 16. fourth motor; 17. storage slot. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0020] according to Figure 1 , 2 As shown in Figure 3, in this embodiment, a tool wear detection device for automobile mold CNC machine tools is proposed, including an adjustment bracket and an optical probe 9. The upper end of the optical probe 9 is provided with a first arm 8, and the upper end of the first arm 8 is rotatably connected to the adjustment bracket; the adjustment bracket drives the optical probe 9 to the local optimal position of the tool to be tested. The optical probe 9 can use a high-resolution area array camera + telecentric lens + backlight, use the forward light of the LED ring light source to illuminate directly, and combine the pixel equivalent to accurately measure the tool wear area to achieve precise detection. I will not explain it too much here.

[0021] Since the optical probe 9 is arranged on one side of the tool on the machining table, dust and debris may fall on the lens end of the optical probe 9 during the turning process, affecting the clarity of the optical probe 9 .

[0022] Based on this, a second arm 11 is provided on one side of the first arm 8, the upper end of the second arm 11 is detachably connected to the adjustment bracket, a cleaning cylinder 12 is provided on the lower end of the second arm 11, and a storage groove 17 is provided on the end of the cleaning cylinder 12 facing the optical probe 9, and a brush plate structure is provided in the storage groove 17;

[0023] The adjustment bracket is provided with a driving assembly for controlling the rotation of the first arm 8 and moving the lens end of the optical probe 9 to the front of the cleaning cylinder 12. The end of the cleaning cylinder 12 away from the optical probe 9 is provided with a push rod assembly for pushing the brush plate structure to contact the lens end of the optical probe 9. The driving assembly controls the rotation of the first arm 8 to flip the lens end of the optical probe 9 to the front of the cleaning cylinder 12. The push rod assembly on the cleaning cylinder 12 will push the brush plate structure out of the cleaning cylinder 12 and contact the lens end of the optical probe 9 to clean the lens end of the optical probe 9. After the optical probe 9 is retracted, it can complete self-cleaning through the brush plate structure, effectively reducing the difficulty of maintaining the detection device on the lathe.

[0024] It needs to be further explained that the adjustment bracket includes a first adjustment arm 2 and a first electric push rod 4. The upper end of the first adjustment arm 2 is provided with a mounting bracket 1. The lower end of the first adjustment arm 2 is rotatably connected to the mounting end of the first electric push rod 4. The outer side of the first adjustment arm 2 is provided with a first motor 3 for controlling the rotation of the first electric push rod 4. The output end of the first electric push rod 4 is rotatably connected to the second adjustment arm 5 provided at the upper end of the first support arm 8. The outer side of the first electric push rod 4 is provided with a second motor 6 for controlling the rotation of the second adjustment arm 5.

[0025] comprehensive Figure 1 and Figure 2 , the specific operation mode of the adjustment bracket is:

[0026] The output end of the first motor 3 is fixed to the pivot at the connection between the first adjustment arm 2 and the first electric push rod 4, and the output end of the second motor 6 is fixed to the pivot at the connection between the first electric push rod 4 and the second adjustment arm 5. The first adjustment arm 2 fixes the adjustment bracket to one side of the lathe processing table through the mounting bracket 1. The first motor 3 at the connection between the first adjustment arm 2 and the first electric push rod 4 supports the first electric push rod 4 to adjust the angle. The second motor 6 at the connection between the first electric push rod 4 and the second adjustment arm 5 can support the second adjustment arm 5 to adjust the angle. The first electric push rod 4 can also adjust the distance between the optical probe 9 and the tool on the lathe by pushing the second adjustment arm 5, thereby improving the flexibility of the optical probe 9.

[0027] It should be further explained that the driving assembly includes a third motor 7 , a mounting end of the third motor 7 is fixedly connected to the lower end of the second adjusting arm 5 , and an output end of the third motor 7 is fixedly connected to the upper end of the first supporting arm 8 .

[0028] comprehensive Figure 1 and Figure 2 , the specific operation mode of the driver component is:

[0029] The lower end of the second adjustment arm 5 is provided with a slot for placing the third motor 7. The third motor 7 is fixed in the slot. When started, it can control the first arm 8 to rotate around the output shaft of the third motor 7. When cleaning the lens of the optical probe 9, the first arm 8 will transfer the optical probe 9 to the front of the cleaning cylinder 12.

[0030] It should be further explained that the push rod assembly includes a second electric push rod 13, the mounting end of the second electric push rod 13 is fixedly connected to the end of the cleaning tube 12 away from the optical probe 9, and the output end of the second electric push rod 13 penetrates into the storage groove 17 and is fixedly connected to the brush plate structure.

[0031] comprehensive Figure 2 and Figure 3 , the specific operation mode of the push rod assembly is:

[0032] When the optical probe 9 is transferred to the front of the cleaning cylinder 12, the second electric push rod 13 will push the brush plate structure to make the brush plate structure contact with the mirror structure of the optical probe 9, clean the dust and debris on the optical probe 9, and ensure the clear mirror surface of the optical probe 9. Of course, in addition to using the second electric push rod 13 to adjust the distance between the brush plate structure and the optical probe 9, other linear push mechanisms can also be used as an alternative, such as pneumatic push rods, gear racks, hydraulic push rods, screw transmission mechanisms, etc., and are not limited to the one described above.

[0033] It should be further explained that the brush plate structure includes a brush plate 15 and a fourth motor 16 arranged in the storage groove 17 , the mounting end of the fourth motor 16 is fixedly connected to the output end of the second electric push rod 13 , and the output end of the fourth motor 16 is fixedly connected to the brush plate 15 .

[0034] comprehensive Figure 2 and Figure 3 , the specific operation mode of the brush plate structure is:

[0035] The brush plate 15 and the fourth motor 16 can move along the axis of the cleaning cylinder 12 in the storage groove 17. When the push rod assembly pushes the fourth motor 16 toward the optical probe 9, the brush plate 15 on the fourth motor 16 will contact the mirror surface of the optical probe 9. The fourth motor 16 controls the brush plate 15 to rotate, thereby completing the cleaning of the lens end of the optical probe 9.

[0036] In order to facilitate the staff to replace the cleaning cylinder 12, the second arm 11 is fixed to the first electric push rod 4 in a detachable connection manner. A better connection method between the second arm 11 and the first electric push rod 4 is described below.

[0037] An assembly frame 10 is provided at the upper end of the second arm 11, and the assembly frame 10 is fixedly connected to the second arm 11. A fixing bolt 14 is installed at the upper end of the assembly frame 10, and the fixing bolt 14 passes through the assembly frame 10 and is threadedly connected to the thread groove provided at the lower end of the first electric push rod 4. The assembly frame 10 fixes the second arm 11 and the cleaning cylinder 12 below the first electric push rod 4 by means of threaded connection. When the cleaning cylinder 12 is removed, the fixing bolt 14 can be screwed out from the corresponding thread groove.

[0038] It should be noted that the above is only an example and is not limited to the use of threaded connection. Other types of detachable structures such as snap connections can also be used to fix the second arm 11.

[0039] The working principle of this application is as follows: the bracket is adjusted to drive the optical probe 9 to the optimal local position of the tool to be tested. The optical probe 9 can use a high-resolution array camera + telecentric lens + backlight, and use the forward light of the LED ring light source to illuminate directly, and combine the pixel equivalent to accurately measure the tool wear area to achieve precise detection. The driving component controls the rotation of the first arm 8 to flip the lens end of the optical probe 9 to the front of the cleaning cylinder 12. The push rod assembly on the cleaning cylinder 12 will push the brush plate structure out of the cleaning cylinder 12 and contact the lens end of the optical probe 9 to clean the lens end of the optical probe 9.

[0040] In the description of the present application, it should be noted that the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0041] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. A tool wear detection device for an automobile mold CNC machine tool, comprising an adjustment bracket and an optical probe (9), characterized in that: A first support arm (8) is provided at the upper end of the optical probe (9), and the upper end of the first support arm (8) is rotatably connected to the adjustment bracket; A second arm (11) is provided on one side of the first arm (8), the upper end of the second arm (11) is detachably connected to the adjustment bracket, a cleaning cylinder (12) is provided on the lower end of the second arm (11), a receiving groove (17) is provided on one end of the cleaning cylinder (12) facing the optical probe (9), and a brush plate structure is provided in the receiving groove (17); The adjustment bracket is provided with a driving assembly for controlling the rotation of the first support arm (8) and moving the lens end of the optical probe (9) to the front of the cleaning cylinder (12); and the cleaning cylinder (12) is provided with a push rod assembly at one end away from the optical probe (9) for pushing the brush plate structure to contact the lens end of the optical probe (9).

2. The tool wear detection device for automobile mold CNC machine tools according to claim 1 is characterized in that: The adjustment bracket comprises a first adjustment arm (2) and a first electric push rod (4); the upper end of the first adjustment arm (2) is provided with a mounting bracket (1); the lower end of the first adjustment arm (2) is rotatably connected to the mounting end of the first electric push rod (4); a first motor (3) for controlling the rotation of the first electric push rod (4) is provided on the outer side of the first adjustment arm (2); the output end of the first electric push rod (4) is rotatably connected to a second adjustment arm (5) provided at the upper end of the first support arm (8); and a second motor (6) for controlling the rotation of the second adjustment arm (5) is provided on the outer side of the first electric push rod (4).

3. The tool wear detection device for automobile mold CNC machine tools according to claim 2 is characterized in that: The driving assembly comprises a third motor (7), a mounting end of the third motor (7) being fixedly connected to the lower end of the second adjusting arm (5), and an output end of the third motor (7) being fixedly connected to the upper end of the first supporting arm (8).

4. The tool wear detection device for automobile mold CNC machine tools according to claim 1 is characterized in that: The push rod assembly comprises a second electric push rod (13), the mounting end of the second electric push rod (13) being fixedly connected to an end of the cleaning cylinder (12) away from the optical probe (9), and the output end of the second electric push rod (13) passing through the storage groove (17) and being fixedly connected to the brush plate structure.

5. The tool wear detection device for automobile mold CNC machine tools according to claim 4 is characterized in that: The brush plate structure comprises a brush plate (15) and a fourth motor (16) arranged in the storage groove (17); a mounting end of the fourth motor (16) is fixedly connected to an output end of the second electric push rod (13); and an output end of the fourth motor (16) is fixedly connected to the brush plate (15).

6. The tool wear detection device for automobile mold CNC machine tools according to claim 2 is characterized in that: An assembly frame (10) is provided at the upper end of the second support arm (11), the assembly frame (10) being fixedly connected to the second support arm (11), and a fixing bolt (14) is installed at the upper end of the assembly frame (10), the fixing bolt (14) passing through the assembly frame (10) and being threadedly connected to a thread groove provided at the lower end of the first electric push rod (4).

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