Online wear detection device for multi-axis machining tool of barrel mold

Abstract

The application discloses a barrel mould multi-axis machining cutter on-line wear detection device, which comprises a base, an X-axis moving table fixedly arranged at the top end of the base, a Y-axis moving table arranged at the top end of the X-axis moving table, a Z-axis moving table arranged at one side of the Y-axis moving table, a spindle box arranged at one side of the Z-axis moving table, a cutter arranged at the bottom end of the spindle box, a movable monitoring mechanism arranged at the bottom end of the Y-axis moving table, a protection mechanism arranged at the front side of the spindle box and a clamp arranged at the top end of the base. The barrel mould multi-axis machining cutter on-line wear detection device is provided with the movable monitoring mechanism, the monitoring camera is driven to move forward and backward through the first hydraulic cylinder driving push rod and connecting handle, the camera can be accurately adjusted to the cutter detection station, and the wear images of different positions, such as the side wall, the cutting edge and the position directly below the cutter, can be collected in multiple angles and in all directions.

Description

Technical Field

[0001] This invention relates to the field of tube mold processing technology, specifically to an online wear detection device for multi-axis machining tools of tube molds. Background Technology

[0002] Body tube molds are high-precision and highly complex mechanical components. Multi-axis machining is the core process for their forming and processing. They are characterized by multiple processing dimensions, high cutting accuracy requirements, and complex forming surfaces. In the actual processing of body tube molds, the cutting tool is the core execution component. The wear condition of the cutting tool directly determines the mold processing accuracy, surface quality, and production qualification rate. Due to the large cutting load and long cutting stroke in body tube mold processing, the cutting tool is prone to failures such as edge wear and minor chipping. If the wear condition of the cutting tool cannot be detected in a timely and accurate manner, it will directly lead to mold size deviation and excessive surface roughness. In severe cases, it will cause workpiece scrapping, equipment overload, and even production safety accidents. Currently, the industry's methods for wear detection of multi-axis machining tools are relatively traditional, mainly relying on operators' manual visual observation and experience judgment, or using offline sampling inspection by stopping the machine and disassembling the tools. Manual inspection is highly subjective, has low accuracy, cannot identify minute tool wear, and is difficult to monitor in real time. Offline inspection interrupts continuous machining processes, significantly reducing the machining efficiency of tube molds, and cannot meet the needs of large-scale, automated precision machining. The few existing online vision inspection devices have fixed structures, and the position and angle of the monitoring camera cannot be flexibly adjusted, only achieving single-view inspection. They cannot capture tool edge wear details from all angles, have large blind spots, and poor adaptability. At the same time, during machining, coolant and cutting chips are easily splashed and adhered to the surface of the inspection lens, causing blurred inspection images and distorted inspection data, seriously affecting the accuracy and stability of tool wear detection, and failing to meet the online inspection requirements of high-precision multi-axis machining of tube molds. Summary of the Invention

[0003] The purpose of this invention is to provide an online wear detection device for multi-axis machining tools of tube molds, so as to solve the problems of poor detection flexibility and insufficient protection performance in the above-mentioned background technology.

[0004] To achieve the above objectives, the present invention provides the following technical solution: an online wear detection device for multi-axis machining tools of tube molds, comprising: a base, an X-axis moving stage, a Y-axis moving stage, a Z-axis moving stage, a spindle box, a cutting tool, a movable monitoring mechanism, a protective mechanism, and a fixture; the X-axis moving stage is fixedly disposed at the top of the base; the Y-axis moving stage is disposed at the top of the X-axis moving stage; the Z-axis moving stage is disposed on one side of the Y-axis moving stage; the spindle box is disposed on one side of the Z-axis moving stage; the cutting tool is disposed at the bottom of the spindle box; the movable monitoring mechanism is disposed at the bottom of the Y-axis moving stage; the protective mechanism is disposed on the front side of the spindle box; and the fixture is disposed at the top of the base.

[0005] Preferably, the movable monitoring mechanism includes: a strip-shaped shell, which is fixedly disposed at the bottom end of the Y-axis moving stage in the front-back direction; a first hydraulic cylinder is fixedly disposed at the rear side of the strip-shaped shell; one end of the first hydraulic cylinder extends into the inner cavity of the strip-shaped shell and is fixedly disposed with a push rod; the top end of the push rod is fixedly disposed with a connecting handle arranged in the left-right direction; a crossbar is fixedly disposed at one end of the connecting handle; and a monitoring camera is rotatably disposed at the rear side of the crossbar.

[0006] Preferably, the movable monitoring mechanism further includes: a second hydraulic cylinder, which is rotatably mounted on the front side of the top of the crossbar via a pin, and a connecting column is fixedly mounted on the top of the monitoring camera, and the second hydraulic cylinder is rotatably connected to the top of the connecting column via a pin.

[0007] Preferably, the monitoring camera is located on the front side of the tool, and a display screen is fixedly installed on the front side of the Y-axis moving stage, and the monitoring camera is electrically connected to the display screen.

[0008] Preferably, the second hydraulic cylinder is tilted upwards from front to back.

[0009] Preferably, the protective mechanism includes: strip columns, with strip columns fixedly installed at both ends of the front side of the Z-axis moving stage; a baffle is inserted into the inner side of the two strip columns; a slider has a groove on the inner side of one of the strip columns, and a slider is inserted into the inner cavity of the groove; the slider is fixedly connected to the baffle; a housing is fixedly installed on the front side of the Z-axis moving stage and is fixedly connected to the other strip column; a rack is fixedly installed on one side of the baffle and is inserted into the strip column; a servo motor is fixedly installed on the front side of the housing, and the output end of the servo motor extends into the inner cavity of the housing and is keyed to a gear; the housing communicates with the inner cavity of the strip columns, and the gear meshes with the rack.

[0010] Preferably, the baffle is transparent and is located between the monitoring camera and the knife.

[0011] Preferably, the top of the bar column is through-shaped, and both the slider and the rack can extend beyond the top of the bar column.

[0012] The online wear detection device for multi-axis machining tools of tube mold proposed in this invention has the following advantages: 1. This invention features a movable monitoring mechanism. A first hydraulic cylinder drives a push rod and a connecting handle to move the monitoring camera back and forth, precisely adjusting the camera to the tool inspection station. Simultaneously, the push-pull action of a second hydraulic cylinder controls the camera's deflection angle, achieving a maximum rotation of 90 degrees. This allows for multi-angle and omnidirectional acquisition of wear images from different locations such as the tool's sidewall, cutting edge, and directly below, completely eliminating blind spots in traditional fixed inspection equipment. It can accurately identify minute faults such as minor tool wear and chipping, adapting to the high-precision inspection requirements of multi-axis machining of tube molds. 2. This invention adds a dedicated protective mechanism, which uses a servo motor to drive a gear and rack transmission to move the transparent baffle up and down. During the processing, the baffle can block the coolant and cutting chips generated during processing, preventing them from splashing and adhering to the surface of the monitoring camera lens, thus preventing image blurring and data distortion, and ensuring long-term high-precision detection results. During non-processing and detection stages, the baffle can be raised without affecting the normal monitoring operation of the camera, thus balancing protection and practicality. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 For the present invention Figure 1 Enlarged view of point A in the image; Figure 3 This is a schematic diagram of the structure of the mobile monitoring mechanism of the present invention; Figure 4 This is a right-side sectional view of the crossbar of the present invention; Figure 5 This is a front sectional view of the bar column of the present invention.

[0014] In the diagram: 1. Base, 2. X-axis moving stage, 3. Y-axis moving stage, 4. Z-axis moving stage, 5. Spindle box, 6. Tool, 7. Movable monitoring mechanism, 71. Strip shell, 72. First hydraulic cylinder, 73. Push rod, 74. Connecting handle, 75. Crossbar, 76. Monitoring camera, 77. Second hydraulic cylinder, 78. Connecting column, 79. Display screen, 8. Protective mechanism, 81. Strip column, 82. Baffle, 83. Slider, 84. Slide groove, 85. Housing, 86. Rack, 87. Servo motor, 88. Gear, 9. Fixture. Detailed Implementation

[0015] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0016] Please see Figure 1-5 The present invention provides a technical solution: an online wear detection device for multi-axis machining tools of tube mold, comprising: a base 1, an X-axis moving stage 2, a Y-axis moving stage 3, a Z-axis moving stage 4, a spindle box 5, a cutting tool 6, a movable monitoring mechanism 7, a protective mechanism 8, and a fixture 9; The X-axis moving stage 2 is fixedly mounted on the top of the base 1, the Y-axis moving stage 3 is mounted on the top of the X-axis moving stage 2, the Z-axis moving stage 4 is mounted on one side of the Y-axis moving stage 3, the spindle box 5 is mounted on one side of the Z-axis moving stage 4, the cutting tool 6 is mounted on the bottom of the spindle box 5, the movable monitoring mechanism 7 is mounted on the bottom of the Y-axis moving stage 3 for monitoring the wear of the cutting tool 6, the protective mechanism 8 is mounted on the front side of the spindle box 5, and the clamp 9 is mounted on the top of the base 1 for fixing the machining mold.

[0017] As a preferred embodiment, the mobile monitoring mechanism 7 further includes: a strip-shaped shell 71, a first hydraulic cylinder 72, a push rod 73, a connecting handle 74, a crossbar 75, a monitoring camera 76, a second hydraulic cylinder 77, a connecting column 78, and a display screen 79. In order to move the monitoring camera 76, the control strip shell 71 is fixedly installed at the bottom of the Y-axis moving stage 3 in the front-back direction. The first hydraulic cylinder 72 is fixedly installed on the rear side of the strip shell 71. One end of the first hydraulic cylinder 72 extends into the inner cavity of the strip shell 71 and is fixedly installed with a push rod 73. The top end of the push rod 73 is fixedly installed with a connecting handle 74 in the left-right direction. The crossbar 75 is fixedly installed at the rear end of the connecting handle 74. The monitoring camera 76 is rotatably installed on the rear side of the crossbar 75. The push rod 73 is moved by controlling the first hydraulic cylinder 72 so that the monitoring camera 76 can be moved to below the tool 6.

[0018] In order to control the deflection angle of the monitoring camera 76, the second hydraulic cylinder 77 is rotatably mounted on the front side of the top of the crossbar 75 via a pin, and the connecting column 78 is fixedly mounted on the top of the monitoring camera 76. The second hydraulic cylinder 77 is rotatably connected to the top of the connecting column 78 via a pin. The second hydraulic cylinder 77 can pull the connecting column 78 to rotate to one side, so that the monitoring camera 76 rotates upward to 90 degrees, thereby enabling the monitoring of the wear condition directly below the tool 6.

[0019] As a preferred option, the monitoring camera 76 is located on the front side of the tool 6, and a display screen 79 is fixedly installed on the front side of the Y-axis moving stage 3. The monitoring camera 76 is electrically connected to the display screen 79. By installing the display screen 79, the wear condition of the tool 6 can be directly displayed on the display screen 79.

[0020] As a preferred option, the second hydraulic cylinder 77 is further inclined upward from front to back so that when the second hydraulic cylinder 77 is activated, it can pull the connecting column 78 and the monitoring camera 76 downward.

[0021] As a preferred embodiment, the protective mechanism 8 further includes: a strip column 81, a baffle 82, a slider 83, a slide groove 84, a housing 85, a rack 86, a servo motor 87, and a gear 88; In order to protect the monitoring camera 76, strip columns 81 are fixedly installed on both the left and right sides of the front side of the Z-axis moving stage 4. The baffle 82 is inserted into the inner side of the two strip columns 81. A sliding groove 84 is opened on the inner side of one of the strip columns 81. A slider 83 is inserted into the inner cavity of the sliding groove 84. The slider 83 is fixedly connected to the baffle 82. The movement of the baffle 82 can be limited by the cooperation of the sliding groove 84 and the slider 83. The housing 85 is fixedly installed on the front side of the Z-axis moving stage 4 and is fixedly connected to the other strip column 81. In order to control the up and down movement of the baffle 82, a rack 86 is fixedly installed on one side of the baffle 82 and is inserted into the bar column 81. A servo motor 87 is fixedly installed on the front side of the housing 85. The output end of the servo motor 87 extends into the inner cavity of the housing 85 and is keyed to a gear 88. The servo motor 87 is existing technology. The servo motor 87 can drive the gear 88 to rotate clockwise or counterclockwise. The inner cavity of the housing 85 is connected to the inner cavity of the bar column 81, and the gear 88 meshes with the rack 86. By rotating the gear 88, the rack 86 can be moved, thereby driving the baffle 82 to move up and down.

[0022] As a preferred option, the baffle 82 is transparent and is located between the monitoring camera 76 and the cutting tool 6. By setting the baffle 82, the coolant splashed during the cutting tool 6 processing can be prevented from spraying onto the monitoring camera 76.

[0023] As a preferred embodiment, the top of the bar post 81 is through-hole, and both the slider 83 and the rack 86 can extend beyond the top of the bar post 81, so that the baffle 82 can be disassembled from the top of the bar post 81.

[0024] Its detailed connection method is a well-known technology in this field. The following mainly introduces the working principle and process, and the specific work is as follows.

[0025] Step 1: After the equipment is turned on, the clamp 9 at the top of the base 1 is used to accurately fix the body tube mold workpiece. The X-axis moving table 2, Y-axis moving table 3, and Z-axis moving table 4 work together to move the spindle box 5 and the bottom cutting tool 6 to the processing station and start the multi-axis processing operation of the mold. Step 2: During the tool processing, the protective mechanism 8 starts operation first, the servo motor 87 starts in the forward direction, and drives the output gear 88 to rotate clockwise. The gear 88 meshes with the rack 86, which drives the baffle 82 to move downward along the guide structure of the slide groove 84 and the slider 83 on the inner side of the strip column 81. This allows the transparent baffle 82 to accurately block the monitoring camera 76 and the tool 6. At this time, the baffle 82 can effectively block the coolant and cutting chips splashed during the processing, preventing the lens of the monitoring camera 76 from being contaminated, and providing a clean monitoring environment for subsequent accurate detection. Step 3: When it is necessary to repair or replace the baffle or monitor the tool 6, the servo motor 87 rotates in reverse, driving the gear 88 to rotate counterclockwise, which drives the baffle 82 to rise upward through the rack 86 until the baffle 82 moves out of the space between the monitoring camera 76 and the tool 6, so that the monitoring camera 76 can acquire images of the tool 6. Step 4: Subsequently, the movable monitoring mechanism is activated to complete the all-round monitoring of tool wear. After the spindle box 5 stops and drives the tool 6 to rise, the first hydraulic cylinder 72 extends and retracts to drive the push rod to move back and forth in the inner cavity of the strip shell 71. Through the connecting handle 74 and the crossbar 75, the monitoring camera 76 is moved horizontally as a whole, and the monitoring camera 76 is precisely adjusted to the monitoring position directly below the tool 6. At the same time, the tilted second hydraulic cylinder 77 pulls the connecting column 78 through the pin hinge structure to drive the monitoring camera 76 to deflect the angle. The camera angle can be adjusted from 0 to 90 degrees, so that the lens of the monitoring camera 76 is accurately aimed at the key wear parts such as the cutting edge, side wall, and tip of the tool, to complete the multi-angle image acquisition and transmit the acquired image signal to the display screen in real time.

[0026] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An online wear detection device for multi-axis machining tools of tube molds, characterized in that, include: Base (1); The X-axis moving stage (2) is fixedly installed at the top of the base (1); The Y-axis moving stage (3) is located at the top of the X-axis moving stage (2); The Z-axis moving stage (4) is located on one side of the Y-axis moving stage (3); The spindle box (5) is located on one side of the Z-axis moving table (4); The cutting tool (6) is located at the bottom end of the spindle box (5); A movable monitoring mechanism (7) is installed at the bottom end of the Y-axis moving stage (3); A protective mechanism (8) is provided on the front side of the spindle box (5); The clamp (9) is located at the top of the base (1).

2. The online wear detection device for multi-axis machining tools of tube molds according to claim 1, characterized in that: The mobile monitoring unit (7) includes: A strip-shaped shell (71) is fixedly disposed at the bottom end of the Y-axis moving stage (3) along the front-back direction; The first hydraulic cylinder (72) is fixedly disposed on the rear side of the strip shell (71); Push rod (73), one end of the first hydraulic cylinder (72) extends into the inner cavity of the strip shell (71) and is fixedly provided with push rod (73); Connecting handle (74): The top end of the push rod (73) is fixedly provided with a connecting handle (74) arranged in the left-right direction. A crossbar (75) is fixedly installed at one end of the rear side of the connecting handle (74); A monitoring camera (76) is rotatably mounted on the rear side of the crossbar (75).

3. The online wear detection device for multi-axis machining tools of tube molds according to claim 2, characterized in that: The mobile monitoring unit (7) also includes: The second hydraulic cylinder (77) is rotatably mounted on the front side of the top end of the crossbar (75) via a pin. A connecting column (78) is fixedly installed at the top of the monitoring camera (76), and the second hydraulic cylinder (77) is rotatably connected to the top of the connecting column (78) via a pin.

4. The online wear detection device for multi-axis machining tools of tube molds according to claim 3, characterized in that: The monitoring camera (76) is located on the front side of the cutting tool (6), and a display screen (79) is fixedly installed on the front side of the Y-axis moving stage (3), and the monitoring camera (76) is electrically connected to the display screen (79).

5. The online wear detection device for multi-axis machining tools of tube molds according to claim 4, characterized in that: The second hydraulic cylinder (77) is tilted upwards from front to back.

6. The online wear detection device for multi-axis machining tools of tube molds according to claim 1, characterized in that: The protective mechanism (8) includes: Strip columns (81) are fixedly installed on both the left and right sides of the front side of the Z-axis moving stage (4). The baffle (82) is inserted into the inner side of the two strip columns (81); The slider (83) has a groove (84) on the inner side of one side of the strip column (81), and the slider (83) is inserted into the inner cavity of the groove (84). The slider (83) is fixedly connected to the baffle (82). The housing (85) is fixedly disposed on the front side of the Z-axis moving stage (4), and the housing (85) is fixedly connected to another strip column (81); A rack (86) is fixedly disposed on one side of the baffle (82), and the rack (86) is inserted into the strip post (81); A servo motor (87) is fixedly mounted on the front side of the housing (85); The output end of the servo motor (87) extends into the inner cavity of the housing (85) and is keyed to the gear (88). The housing (85) communicates with the inner cavity of the bar column (81), and the gear (88) meshes with the rack (86).

7. The online wear detection device for multi-axis machining tools of tube molds according to claim 6, characterized in that: The baffle (82) is transparent and is located between the monitoring camera (76) and the knife (6).

8. The online wear detection device for multi-axis machining tools of tube molds according to claim 7, characterized in that: The top of the bar column (81) is through, and both the slider (83) and the rack (86) can extend beyond the top of the bar column (81).

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