Self-adaptive thread gauge automatic detection equipment

Abstract

The invention belongs to the technical field of detection equipment, and particularly relates to self-adaptive thread gauge automatic detection equipment which comprises a main rack, a mounting platform, an XY-axis moving device and a thread detection device, the XY-axis moving device is mounted on the main rack, the mounting platform is mounted on the main rack and used for loading a die casting, and the thread detection device is mounted on the mounting platform. And the thread detection device is positioned above the mounting platform and is fixedly connected with the output end of the XY-axis moving device. The self-adaptive thread gauge automatic detection equipment can realize self-adaptive thread gauge detection of a threaded hole of a die casting, can still realize automatic detection even if part of non-vertical threaded holes exist, is particularly suitable for detection of the threaded hole with high requirement on thread tooth value precision of the threaded hole, replaces manpower, is higher in production efficiency, and is more suitable for large-scale production. And the detection quality is better guaranteed.

Description

Technical Field

[0001] The invention belongs to the technical field of detection equipment, and in particular relates to an adaptive thread gauge automatic detection device. Background Art

[0002] The threaded holes set on metal die-castings usually need to be tested with a thread gauge. Specifically, the thread gauge is used to detect the center of the positive threaded hole. The thread gauge includes a through gauge and a stop gauge. When the through gauge is screwed into the threaded hole, if it can pass through the threaded hole smoothly, it means that the threaded hole has passed the through gauge test. When the stop gauge is screwed into the screw hole, if the stop gauge cannot pass through the screw hole, it means that the threaded hole has passed the stop gauge test. However, the existing detection method can only detect the size of the threaded hole, but cannot detect the number of thread rings. At the same time, the current detection of threaded holes generally requires manual detection, which is not only inefficient, but also time-consuming and labor-intensive, prone to errors and high cost. Summary of the invention

[0003] The purpose of the present invention is to provide an adaptive thread gauge automatic detection device, aiming to solve the technical problem that the prior art cannot realize automatic detection of the number of thread turns of a threaded hole of a die-casting.

[0004] To achieve the above-mentioned purpose, an embodiment of the present invention provides an adaptive thread gauge automatic detection device, comprising a main frame, a mounting platform, an XY axis moving device and a thread detection device, wherein the XY axis moving device is mounted on the main frame, the mounting platform is mounted on the main frame and is used to load the die casting, and the thread detection device is located above the mounting platform and is connected and fixed to the output end of the XY axis moving device; the thread detection device comprises a support plate, a Z-axis driving mechanism, a sliding mechanism, a clamping mechanism and a thread detection mechanism, and the thread detection mechanism comprises a servo motor, an upper spindle, an upper universal joint, a plum blossom shaft sleeve, a plum blossom shaft, a lower universal joint, a middle connecting shaft, a middle shaft sleeve, a flexible shaft, a gauge shaft seat, a gauge shaft seat sleeve and a gauge;

[0005] The support plate is connected and fixed to the output end of the XY axis moving device, the servo motor is fixed to the rear side of the support plate, the upper spindle is rotatably installed on the front side of the support plate and is drivingly connected to the servo motor, the plum blossom shaft sleeve is connected to the bottom end of the upper spindle through the upper universal joint, the plum blossom shaft is inserted into the plum blossom shaft sleeve and cooperates with it, the middle connecting shaft is connected to the bottom end of the plum blossom shaft through the lower universal joint, the middle shaft sleeve is sleeved outside the middle connecting shaft, the tooth gauge shaft seat is connected to the bottom end of the middle connecting shaft through the soft shaft, the tooth gauge shaft seat sleeve is sleeved outside the tooth gauge shaft seat, and the tooth gauge is installed on the tooth gauge shaft seat;

[0006] The Z-axis driving mechanism is installed on the front side of the support plate, and the Z-axis driving mechanism includes a lower moving block, and the lower moving block is connected and fixed to the upper end of the flexible shaft to drive the flexible shaft to rise and fall. The sliding mechanism is installed on the front side of the support plate, and the sliding mechanism includes a connecting block, and the connecting block can slide relative to the support plate. The connecting block is connected and fixed to the middle shaft sleeve, and the connecting block abuts against the top of the lower moving block. The clamping mechanism is located below the connecting block and is connected and fixed to the sliding mechanism and can slide relative to the support plate, and the clamping mechanism can clamp the outer periphery of the gauge shaft seat sleeve.

[0007] Optionally, the thread detection device further comprises a ball bearing, wherein the ball bearing is sleeved outside the middle connecting shaft and is located above the middle shaft sleeve.

[0008] Optionally, the Z-axis driving mechanism further comprises a support frame, a Z-axis motor, a Z-axis lead screw, a Z-axis nut, an upper moving block, a guide shaft, an upper guide sleeve, a lower guide sleeve and a tension spring, the support frame is fixedly mounted on the front side of the support plate, an upper cantilever block, a middle cantilever block and a lower cantilever block are arranged on the support frame, the Z-axis motor is mounted on the upper cantilever block and arranged downward, the Z-axis lead screw is connected to the Z-axis motor driving and passes through the middle cantilever block, the upper moving block and the lower moving block in sequence, and its bottom end The lower cantilever block is rotatably connected, the Z-axis nut is threadedly connected to the Z-axis screw rod and fixed on the upper moving block, the guide shaft is vertically connected between the middle cantilever block and the lower cantilever block, the upper guide sleeve and the lower guide sleeve are both sleeved outside the guide shaft, and the upper guide sleeve is connected and fixed to the upper moving block, the lower guide sleeve is connected and fixed to the lower moving block, the lower end of the tension spring is connected to the lower moving block, and the upper end of the tension spring is connected to the top of the support plate.

[0009] Optionally, the sliding mechanism also includes a fixed slider, a sliding guide rail, an upper L-shaped block and a lower L-shaped block, the fixed slider is connected and fixed to the front side of the support plate, the sliding guide rail is slidably connected to the fixed slider, the upper L-shaped block and the lower L-shaped block are arranged up and down and connected and fixed to the sliding guide rail, the connecting block is connected and fixed to the upper L-shaped block, and the clamping mechanism is connected and fixed to the lower L-shaped block.

[0010] Optionally, the sliding mechanism further includes a limit switch and a sensing sheet, wherein the limit switch is mounted on the front side of the support plate, and the sensing sheet is connected to the sliding guide rail and senses the limit switch when the sliding guide rail rises to a set position.

[0011] Optionally, the clamping mechanism includes a finger cylinder and two arc-shaped clamping blocks, the finger cylinder is connected and fixed to the lower L-shaped block, the two arc-shaped clamping blocks are respectively connected and fixed to two fingers of the finger cylinder, and under the drive of the finger cylinder, the two arc-shaped clamping blocks can clamp the gauge shaft seat sleeve.

[0012] Optionally, the thread detection device further includes a CCD industrial camera, and the CCD industrial camera is installed on the front side of the support plate.

[0013] Optionally, the XY-axis moving device includes a moving frame, an X-axis driving mechanism and a Y-axis driving mechanism, the Y-axis driving mechanism is installed on the main frame, the moving frame is connected to the output end of the Y-axis driving mechanism and can move along the Y-axis direction by being driven by the Y-axis driving mechanism, the X-axis driving mechanism is installed on the moving frame, and the thread detection device is connected to the output end of the X-axis driving mechanism and can move along the X-axis direction by being driven by the X-axis driving mechanism.

[0014] Optionally, the X-axis drive mechanism includes an X-axis motor, an X-axis screw, an X-axis nut, an X-axis guide rail and an X-axis slider, the X-axis motor is installed on the mobile frame, the X-axis screw is arranged in the horizontal X-axis direction and is connected to the Z-axis motor, the X-axis nut is threadedly connected to the X-axis screw, the X-axis guide rail is parallel to the X-axis screw and fixed on the mobile frame, the X-axis slider is slidably connected to the X-axis guide rail, and the thread detection device is simultaneously connected and fixed to the X-axis nut and the X-axis slider.

[0015] Optionally, the Y-axis driving mechanism includes a Y-axis motor, a Y-axis screw rod, a Y-axis nut, a Y-axis guide rail and a Y-axis slider, the Y-axis motor is installed on the main frame, the Y-axis screw rod is arranged in the horizontal Y-axis direction and is connected to the Y-axis motor, the Y-axis nut is threadedly connected to the Y-axis screw rod, the Y-axis guide rail is parallel to the Y-axis screw rod and fixed to the main frame, the Y-axis slider is slidably connected to the Y-axis guide rail, and the bottom of the movable frame is simultaneously connected and fixed to the Y-axis nut and the Y-axis slider.

[0016] The above one or more technical solutions in the adaptive thread gauge automatic detection device provided by the embodiment of the present invention have at least one of the following technical effects: when working, the die-casting that needs to be tested for threaded holes is loaded on the mounting platform, and then the thread detection device connected to it is moved to the top of the threaded hole of the die-casting through the driving control of the XY-axis moving device; at this time, the clamping mechanism first clamps the outer periphery of the thread gauge shaft seat sleeve, and the Z-axis driving mechanism of the thread detection device controls its lower moving block to move downward, because the lower moving block is connected to the upper end of the flexible shaft. If the screw thread is fixed, the lower moving block will drive the flexible shaft and the plum blossom shaft, lower universal joint, middle connecting shaft, middle shaft sleeve, flexible shaft, gauge shaft seat, gauge shaft seat sleeve and gauge directly or indirectly connected to the flexible shaft to move downward relative to the support plate with the sliding mechanism as the guide. The plum blossom shaft is sleeve-fitted with the plum blossom shaft sleeve, so the plum blossom shaft can move downward relative to the plum blossom shaft sleeve until the gauge contacts or approaches the edge of the threaded hole of the die-casting. The Z-axis driving mechanism pauses and the clamping mechanism releases its clamping of the gauge shaft seat sleeve. At this time, the servo motor starts positive The transmission drives the upper spindle to rotate, and the upper spindle drives the plum blossom shaft sleeve to rotate through the upper universal joint. The plum blossom shaft also rotates because it cooperates with the plum blossom shaft sleeve. The plum blossom shaft drives the middle connecting shaft to rotate through the lower universal joint. Under the action of the middle shaft sleeve, the connecting block of the sliding mechanism will not interfere with the rotation of the middle connecting shaft. Then the middle connecting shaft drives the flexible shaft to rotate, and the flexible shaft drives the thread gauge shaft seat to rotate, thereby realizing the control of the thread gauge rotation. The rotating thread gauge is screwed into the threaded hole of the die casting until it is screwed into the bottom of the threaded hole. The servo motor pauses. In this process, due to the provision of a flexible shaft, And the clamping mechanism loosens the clamping of the gauge shaft sleeve. Then, even if the threaded hole to be inspected is not a vertical hole, the gauge can be screwed into the threaded hole under the swing of the flexible shaft and the gauge shaft sleeve to achieve self-adaptation. At this time, the Z-axis drive mechanism starts to reset and the servo motor starts to reverse until the gauge is controlled to be screwed out of the threaded hole of the die-casting. The servo motor records the number of turns the gauge is screwed out of the threaded hole. In this way, the inspection of a single threaded hole is completed. The number of turns can be calculated by software later to determine whether the threaded hole meets the requirements.

[0017] The adaptive thread gauge automatic detection device of the present invention can realize adaptive thread gauge detection of the threaded holes of die-castings. Even if there are some non-vertical threaded holes, automatic detection can still be realized. It is particularly suitable for the detection of threaded holes with high precision requirements for threaded hole thread values. It replaces manual labor, has higher production efficiency, and has more guaranteed detection quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0019] Figure 1 A schematic structural diagram of an adaptive thread gauge automatic detection device provided in an embodiment of the present invention.

[0020] Figure 2 A schematic diagram of the structure of the adaptive thread gauge automatic detection device provided in an embodiment of the present invention with part of the main frame hidden.

[0021] Figure 3 A schematic diagram of the structure of the adaptive thread gauge automatic detection device provided in an embodiment of the present invention with part of the main frame and the installation platform hidden.

[0022] Figure 4 for Figure 3 A schematic structural diagram of the adaptive thread gauge automatic detection device from another perspective.

[0023] Figure 5 A structural schematic diagram of a thread detection device of an adaptive thread gauge automatic detection device provided in an embodiment of the present invention.

[0024] Figure 6 for Figure 5 A structural schematic diagram of another perspective of the thread detection device of the adaptive thread gauge automatic detection equipment.

[0025] Figure 7 for Figure 5 A structural schematic diagram of a thread detection device from another perspective of the adaptive thread gauge automatic detection equipment.

[0026] Figure 8 A structural schematic diagram of a thread detection device of an adaptive thread gauge automatic detection device provided in an embodiment of the present invention with a CCD industrial camera hidden.

[0027] Fig. 9 A schematic diagram of the structural decomposition of a thread detection mechanism of an adaptive thread gauge automatic detection device provided in an embodiment of the present invention.

[0028] Fig.10 A schematic diagram of the structural decomposition of the sliding mechanism of the adaptive thread gauge automatic detection device provided in an embodiment of the present invention.

[0029] Fig.11 for Fig.10A structural schematic diagram of the sliding mechanism of the adaptive thread gauge automatic detection device from another perspective.

[0030] Among them, the reference numerals in the figure are:

[0031] 10—Main frame 20—Installation platform 30—XY axis moving device

[0032] 31 - moving frame 32 - X-axis driving mechanism 33 - Y-axis driving mechanism

[0033] 40—thread detection device 41—support plate 42—Z-axis driving mechanism

[0034] 43 - Sliding mechanism 44 - Clamping mechanism 45 - Thread detection mechanism

[0035] 46—CCD industrial camera 321—X-axis motor 322—X-axis screw

[0036] 323—X-axis nut 324—X-axis guide rail 325—X-axis slider

[0037] 331—Y-axis motor 332—Y-axis screw 333—Y-axis nut

[0038] 334—Y-axis guide rail 335—Y-axis slider 42a—lower moving block

[0039] 42b—support frame 42c—Z-axis motor 42d—Z-axis screw

[0040] 42e—Z-axis nut 42f—upper moving block 42g—guide shaft

[0041] 42h—upper guide sleeve 42i—lower guide sleeve 431—connecting block

[0042] 432—fixed slider 433—sliding guide rail 434—upper L-shaped block

[0043] 435—lower L-shaped block 436—limit switch 437—sensor

[0044] 441 - Finger cylinder 442 - Arc clamp 45a - Servo motor

[0045] 45b—upper spindle 45c—upper universal joint 45d—plum bushing

[0046] 45e—Plum blossom shaft 45f—Lower universal joint 45g—Middle connecting shaft

[0047] 45h—middle shaft sleeve 45i—flexible shaft 45j—gauge shaft seat

[0048] 45k - thread gauge shaft sleeve 45l - thread gauge 45n - ball bearing

[0049] 42b1—upper cantilever block 42b2—middle cantilever block 42b3—lower cantilever block. DETAILED DESCRIPTION

[0050] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. Figures 1 to 11 The described embodiments are exemplary and are intended to be used to explain the embodiments of the present invention, but should not be construed as limiting the present invention.

[0051] In the description of the embodiments of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0052] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0053] In the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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 an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0054] In one embodiment of the present invention, Figures 1 to 4 and Fig. 9As shown, an adaptive thread gauge automatic detection device is provided, including a main frame 10, a mounting platform 20, an XY axis moving device 30 and a thread detection device 40, wherein the XY axis moving device 30 is mounted on the main frame 10, the mounting platform 20 is mounted on the main frame 10 and is used to load die castings, and the thread detection device 40 is located above the mounting platform 20 and is connected and fixed to the output end of the XY axis moving device 30; the thread detection device 40 includes a support plate 41, a Z axis drive mechanism 42, a sliding mechanism 43, a clamping mechanism 44 and a thread detection mechanism 45, and the thread detection mechanism 45 includes a servo motor 45a, an upper spindle 45b, an upper universal joint 45c, a plum blossom shaft sleeve 45d, a plum blossom shaft 45e, a lower universal joint 45f, a middle connecting shaft 45g, a middle shaft sleeve 45h, a flexible shaft 45i, a gauge shaft seat 45j, a gauge shaft seat sleeve 45k and a gauge 45l.

[0055] Furthermore, if Figures 4-5 As shown, the support plate 41 is connected and fixed to the output end of the XY axis moving device 30, the servo motor 45a is fixed to the rear side of the support plate 41, the upper spindle 45b is rotatably installed on the front side of the support plate 41 and is transmission-connected to the servo motor 45a, the plum blossom shaft sleeve 45d is connected to the bottom end of the upper spindle 45b through the upper universal joint 45c, the plum blossom shaft 45e is inserted into the plum blossom shaft sleeve 45d and cooperates with it, the middle connecting shaft 45g is connected to the bottom end of the plum blossom shaft 45e through the lower universal joint 45f, the middle shaft sleeve 45h is sleeved outside the middle connecting shaft 45g, the tooth gauge shaft seat 45j is connected to the bottom end of the middle connecting shaft 45g through the soft shaft 45i, the tooth gauge shaft seat sleeve 45k is sleeved outside the tooth gauge shaft seat 45j, and the tooth gauge 45l is installed on the tooth gauge shaft seat 45j;

[0056] Furthermore, if Figures 6-7As shown, the Z-axis driving mechanism 42 is installed on the front side of the support plate 41, and the Z-axis driving mechanism 42 includes a lower moving block 42a, and the lower moving block 42a is connected and fixed to the upper end of the flexible shaft 45i to drive the flexible shaft 45i to rise and fall. The sliding mechanism 43 is installed on the front side of the support plate 41, and the sliding mechanism 43 includes a connecting block 431, and the connecting block 431 can slide relative to the support plate 41. The connecting block 431 is connected and fixed to the middle shaft sleeve 45h. Preferably, the middle shaft sleeve 45h 5h is a T-shaped sleeve, and its upper flange is also pressed against the top of the connecting block 431, and the connecting block 431 is abutted against the top of the lower moving block 42a. The clamping mechanism 44 is located below the connecting block 431 and is fixedly connected to the sliding mechanism 43 and can slide relative to the support plate 41, and the clamping mechanism 44 can clamp the outer periphery of the gauge shaft seat sleeve 45k. Preferably, the gauge shaft seat sleeve 45k is a T-shaped sleeve, and its upper flange is also pressed against the top of the clamping mechanism 44 that clamps the gauge shaft seat sleeve 45k.

[0057] The adaptive thread gauge automatic detection equipment of the embodiment of the present invention can realize the adaptive thread gauge 45l detection of the threaded hole of the die-casting. Even if there are some non-vertical threaded holes, automatic detection can still be realized. It is particularly suitable for the detection of threaded holes with high precision requirements for the thread teeth values ​​of the threaded holes. It replaces manual work, has higher production efficiency, and has more guaranteed detection quality.

[0058] Combination Figures 1 to 11 The working principle of the adaptive thread gauge automatic detection device according to the embodiment of the present invention is described in detail:

[0059] During operation, the die-casting that needs to be inspected for threaded holes is loaded on the mounting platform 20, and then the threaded inspection device 40 connected thereto is moved to the top of the threaded hole of the die-casting through the driving control of the XY-axis moving device 30; at this time, the clamping mechanism 44 first clamps the outer periphery of the thread gauge shaft seat sleeve 45k, and the Z-axis driving mechanism 42 of the threaded inspection device 40 controls its lower moving block 42a to move downward, because the lower moving block 42a is connected and fixed to the upper end of the flexible shaft 45i, then the lower moving block 42a will drive the flexible shaft 45i and the plum blossom shaft 45e directly or indirectly connected to the flexible shaft 45i, the lower universal joint 45e and the lower universal joint 45e in the process of moving downward. The joint 45f, the middle connecting shaft 45g, the middle shaft sleeve 45h, the flexible shaft 45i, the tooth gauge shaft seat 45j, the tooth gauge shaft seat sleeve 45k and the tooth gauge 45l are all moved downward relative to the support plate 41 with the sliding mechanism 43 as the guide. The plum blossom shaft 45e is sleeve-fitted with the plum blossom shaft sleeve 45d, so the plum blossom shaft 45e can move downward relative to the plum blossom shaft sleeve 45d until the tooth gauge 45l contacts or approaches the threaded hole edge of the die casting, the Z-axis driving mechanism 42 is suspended, and the clamping mechanism 44 releases the clamping of the tooth gauge shaft seat sleeve 45k; at this time, the servo motor 45a starts the forward transmission, driving the upper spindle 45b to rotate, and the upper spindle 45b is connected to the upper universal joint 4 5c drives the plum blossom shaft sleeve 45d to rotate, and the plum blossom shaft 45e also rotates because it cooperates with the plum blossom shaft sleeve 45d. The plum blossom shaft 45e drives the middle connecting shaft 45g to rotate through the lower universal joint 45f. Under the action of the middle shaft sleeve 45h, the connecting block 431 of the sliding mechanism 43 will not interfere with the rotation of the middle connecting shaft 45g. Then the middle connecting shaft 45g drives the flexible shaft 45i to rotate, and the flexible shaft 45i drives the tooth gauge shaft seat 45j to rotate, thereby realizing the control of the tooth gauge 45l to rotate. The rotating tooth gauge 45l is screwed into the threaded hole of the die casting until it is screwed into the bottom of the threaded hole, and the servo motor 45a is suspended. In this process, due to the provision of a flexible shaft 45i, and the clamping mechanism 44 releases the clamping of the gauge shaft seat sleeve 45k, then even if the threaded hole to be detected is not a vertical hole, the gauge 45l can be screwed into the threaded hole under the swing of the soft shaft 45i and the gauge shaft seat sleeve 45k to achieve self-adaptation; at this time, the Z-axis drive mechanism 42 starts to reset, and the servo motor 45a starts to reverse until the gauge 45l is controlled to be screwed out of the threaded hole of the die-casting, and the servo motor 45a records the number of turns of the gauge 45l screwed out of the threaded hole, thereby completing the detection of a single threaded hole, and the number of turns can be calculated by software later to determine whether the threaded hole meets the requirements.

[0060] It should be noted that the adaptive thread gauge automatic detection equipment in the embodiment of the present invention also needs to use a controller to control the electric components in the entire equipment, and a software program needs to be set up accordingly. Since the embodiment of the present invention seeks protection for the structural scheme, those skilled in the art can implement the design of the corresponding software based on the structural scheme disclosed in this embodiment, and this embodiment does not make unnecessary elaborations on the software that cooperates with it.

[0061] In one embodiment of the present invention, Figures 8-9 As shown, the thread detection device 40 further includes a ball bearing 45n, which is sleeved outside the middle connecting shaft 45g and located above the middle shaft sleeve 45h. Specifically, the arrangement of the ball bearing 45n can ensure that the middle connecting shaft 45g can still rotate with sufficient lubrication when it is heated by working friction, thereby ensuring the reliability of the thread detection device 40 for long-term high-intensity use.

[0062] In one embodiment of the present invention, Figure 5 and 10As shown in Figures 1 to 11, the Z-axis driving mechanism 42 also includes a support frame 42b, a Z-axis motor 42c, a Z-axis screw rod 42d, a Z-axis nut 42e, an upper moving block 42f, a guide shaft 42g, an upper guide sleeve 42h, a lower guide sleeve 42i and a tension spring (not shown in the figure), the support frame 42b is fixedly mounted on the front side of the support plate 41, and an upper cantilever block 42b1, a middle cantilever block 42b2 and a lower cantilever block 42b3 are arranged on the support frame 42b, the Z-axis motor 42c is mounted on the upper cantilever block 42b1 and is arranged downward, the Z-axis screw rod 42d is drivingly connected to the Z-axis motor 42c and passes through the middle cantilever block 42b2, the upper moving block 42f and the lower cantilever block 42b3 in sequence. After the lower moving block 42a, its bottom end is rotatably connected to the lower cantilever block 42b3, the Z-axis nut 42e is threadedly connected to the Z-axis screw rod 42d and fixed on the upper moving block 42f, the guide shaft 42g is vertically connected between the middle cantilever block 42b2 and the lower cantilever block 42b3, the upper guide sleeve 42h and the lower guide sleeve 42i are both sleeved outside the guide shaft 42g, and the upper guide sleeve 42h is connected and fixed to the upper moving block 42f, the lower guide sleeve 42i is connected and fixed to the lower moving block 42a, the lower end of the tension spring is connected to the lower moving block 42a, and the upper end of the tension spring is connected to the top of the support plate. Specifically, the support frame 42b is locked and connected to the front side of the support plate 41 as a supporting installation structure, and an upper cantilever block 42b1, a middle cantilever block 42b2 and a lower cantilever block 42b3 are arranged on the same side. The Z-axis motor 42c drives the Z-axis screw rod 42d to rotate, and the Z-axis nut 42e threadedly connected to the Z-axis screw rod 42d moves downward, thereby driving the upper moving block 42f connected to the Z-axis nut 42e to move downward. During the downward movement of the upper moving block 42f, the upper guide sleeve 42h will press the lower guide sleeve 42i, thereby forcing The lower moving block 42a connected to the lower guide sleeve 42i moves downward, and the lower moving block 42a is fixedly connected to the upper end of the flexible shaft 45i. Then, in the process of moving downward, the lower moving block 42a will drive the flexible shaft 45i and the plum blossom shaft 45e directly or indirectly connected to the flexible shaft 45i, the lower universal joint 45f, the middle connecting shaft 45g, the middle shaft sleeve 45h, the flexible shaft 45i, the gauge shaft seat 45j, the gauge shaft seat sleeve 45k and the gauge 45l to move downward relative to the support plate 41 guided by the sliding mechanism 43.Among them, the lower moving block 42a also stretches the tension spring connected to it at the bottom during the downward movement. Then, when the Z-axis motor 42c starts to reset, it only controls the upper moving block 42f to move up, and the lower moving block 42a is still maintained at a lower position to ensure that the gauge 45l is screwed into the threaded hole for detection. When the gauge 45l is reversed and screwed out of the threaded hole, the lower moving block 42a is pulled up by the tension spring connected to the top of the support plate, thereby driving the gauge 45l to move up and wait for the next work. This structure cleverly avoids the reset of the Z-axis motor 42c directly driving the rise of the gauge 45l indirectly controlled by it, and ensures that the descent and screw-in actions of the gauge 45l are separately controlled.

[0063] In one embodiment of the present invention, Figure 5 and 10 As shown in Figures 1 to 11, the sliding mechanism 43 further includes a fixed slider 432, a sliding guide rail 433, an upper L-shaped block 434 and a lower L-shaped block 435. The fixed slider 432 is connected and fixed to the front side of the support plate 41, the sliding guide rail 433 is slidably connected to the fixed slider 432, the upper L-shaped block 434 and the lower L-shaped block 435 are arranged up and down and connected and fixed to the sliding guide rail 433, the connecting block 431 is connected and fixed to the upper L-shaped block 434, and the clamping mechanism 44 is connected and fixed to the lower L-shaped block 435. Specifically, the fixed slider 432 is connected and fixed to the front side of the support plate 41 as a fixed part, and the sliding guide rail 433 slidably matched with it is a moving part that can slide up and down relative to the fixed slider 432. In this way, when the flexible shaft 45i is driven by the lower moving block 42a to move downward, the connecting block 431 also moves downward under the guidance of the sliding guide rail 433, and the clamping mechanism 44 also moves downward under the guidance of the sliding guide rail 433, achieving synchronization, ensuring that the setting of the connecting block 431 and the clamping mechanism 44 does not interfere with the normal up and down movement of the tooth gauge 451. Among them, the setting of the upper L-shaped block 434 and the lower L-shaped block 435 can make the connecting block 431 and the clamping mechanism 44 connected to the sliding guide rail 433 spaced apart from the sliding guide rail 433 by a certain distance, ensuring the safety and reliability of use.

[0064] In one embodiment of the present invention, Figure 5As shown, the sliding mechanism 43 further includes a limit switch 436 and a sensing sheet 437. The limit switch 436 is installed on the front side of the support plate 41. The sensing sheet 437 is connected to the sliding rail 433 and senses the limit switch 436 when the sliding rail 433 rises to a set position. Specifically, when the sliding rail 433 moves up to a certain height, the sensing sheet 437 connected thereto can sense the limit switch 436 installed on the front side of the support plate 41. At this time, the height signal of the sliding rail 433 can be transmitted to the controller, and the overall control is realized by the controller, and the corresponding signal for executing other programs is sent to the servo motor 45a and the Z-axis motor 42c, etc.

[0065] In one embodiment of the present invention, as shown in the figure, the clamping mechanism 44 includes a finger cylinder 441 and two arc-shaped clamping blocks 442. The finger cylinder 441 is connected and fixed to the lower L-shaped block 435. The two arc-shaped clamping blocks 442 are respectively connected and fixed to the two fingers of the finger cylinder 441. Under the drive of the finger cylinder 441, the two arc-shaped clamping blocks 442 can clamp the tooth gauge shaft seat sleeve 45k. Specifically, the finger cylinder 441 can adapt to clamp the outer periphery of the tooth gauge shaft seat sleeve 45k by controlling the closing of the two arc-shaped clamping blocks 442, and abut against the upper flange of the tooth gauge shaft seat sleeve 45k. The clamping of the tooth gauge shaft seat sleeve 45k can be released by controlling the loosening of the two arc-shaped clamping blocks 442. The structure is simple and applicable.

[0066] In one embodiment of the present invention, Figure 5 As shown, the thread detection device 40 further includes a CCD industrial camera 46, which is installed on the front side of the support plate 41. Specifically, because the CCD industrial camera 46 is installed on the support plate 41, it is driven by the XY axis moving device 30 synchronously with other components of the thread detection device 40, through which the threaded hole on the die casting can be photographed and calibrated, and then the controller can receive the signal later to more accurately control the thread detection device 40 to perform hole entry detection on the threaded hole on the die casting.

[0067] In one embodiment of the present invention, Figures 2 to 4As shown, the XY axis moving device 30 includes a moving frame 31, an X axis driving mechanism 32 and a Y axis driving mechanism 33, wherein the Y axis driving mechanism 33 is installed on the main frame 10, the moving frame 31 is connected to the output end of the Y axis driving mechanism 33 and can move along the Y axis through the drive of the Y axis driving mechanism 33, the X axis driving mechanism 32 is installed on the moving frame 31, and the thread detection device 40 is connected to the output end of the X axis driving mechanism 32 and can move along the X axis through the drive of the X axis driving mechanism 32. Specifically, the Y axis driving mechanism 33 drives the moving frame 31 to move along the Y axis direction, so that the X axis driving mechanism 32 on the moving frame 31 is driven to move along the Y axis direction, and then the thread detection device 40 connected thereto is driven to move along the X axis direction through the X axis driving mechanism 32, so that under the joint action of the X axis driving mechanism 32 and the Y axis driving mechanism 33, the thread detection device 40 is controlled to move in the Y axis and X axis directions.

[0068] In one embodiment of the present invention, Figures 3-4 As shown, the X-axis driving mechanism 32 includes an X-axis motor 321, an X-axis screw rod 322, an X-axis nut 323, an X-axis guide rail 324 and an X-axis slider 325, the X-axis motor 321 is installed on the moving frame 31, the X-axis screw rod 322 is arranged in the horizontal X-axis direction and is connected to the Z-axis motor 42c, the X-axis nut 323 is threadedly connected to the X-axis screw rod 322, the X-axis guide rail 324 is parallel to the X-axis screw rod 322 and is fixed on the moving frame 31, the X-axis slider 325 is slidably connected to the X-axis guide rail 324, and the thread detection device 40 is simultaneously connected and fixed to the X-axis nut 323 and the X-axis slider 325. Specifically, the X-axis motor 321 drives the X-axis screw rod 322 connected to it to rotate, thereby driving the X-axis nut 323 threadedly connected to the X-axis screw rod 322 to move along the X-axis, and then driving the thread detection device 40 connected to it to slide guided by the X-axis slider 325 in the direction of the X-axis guide rail 324, thereby controlling the movement of the thread detection device 40 along the X-axis direction, and the movement process is reliable and stable.

[0069] In one embodiment of the present invention, Figure 2As shown, the Y-axis driving mechanism 33 includes a Y-axis motor 331, a Y-axis screw rod 332, a Y-axis nut 333, a Y-axis guide rail 334 and a Y-axis slider 335. The Y-axis motor 331 is installed on the main frame 10, the Y-axis screw rod 332 is arranged in the horizontal Y-axis direction and is connected to the Y-axis motor 331, the Y-axis nut 333 is threadedly connected to the Y-axis screw rod 332, the Y-axis guide rail 334 is parallel to the Y-axis screw rod 332 and is fixed on the main frame 10, the Y-axis slider 335 is slidably connected to the Y-axis guide rail 334, and the bottom of the movable frame 31 is simultaneously connected and fixed to the Y-axis nut 333 and the Y-axis slider 335. Specifically, the Y-axis motor 331 drives the Y-axis screw rod 332 connected to it to rotate, thereby driving the Y-axis nut 333 threadedly connected to the Y-axis screw rod 332 to move along the X-axis, and then driving the movable frame 31 connected to it to slide guided by the Y-axis slider 335 in the direction of the Y-axis guide rail 334, thereby indirectly controlling the movement of the thread detection device 40 along the Y-axis direction, and the movement process is reliable and stable.

[0070] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An adaptive thread gauge automatic detection device, characterized in that: It includes a main frame, a mounting platform, an XY axis moving device and a thread detection device, wherein the XY axis moving device is mounted on the main frame, the mounting platform is mounted on the main frame and is used to load the die casting, and the thread detection device is located above the mounting platform and is connected and fixed to the output end of the XY axis moving device; the thread detection device includes a support plate, a Z axis driving mechanism, a sliding mechanism, a clamping mechanism and a thread detection mechanism, and the thread detection mechanism includes a servo motor, an upper spindle, an upper universal joint, a plum blossom shaft sleeve, a plum blossom shaft, a lower universal joint, a middle connecting shaft, a middle shaft sleeve, a flexible shaft, a thread gauge shaft seat, a thread gauge shaft seat sleeve and a thread gauge; The support plate is connected and fixed to the output end of the XY axis moving device, the servo motor is fixed to the rear side of the support plate, the upper spindle is rotatably installed on the front side of the support plate and is drivingly connected to the servo motor, the plum blossom shaft sleeve is connected to the bottom end of the upper spindle through the upper universal joint, the plum blossom shaft is inserted into the plum blossom shaft sleeve and cooperates with it, the middle connecting shaft is connected to the bottom end of the plum blossom shaft through the lower universal joint, the middle shaft sleeve is sleeved outside the middle connecting shaft, the tooth gauge shaft seat is connected to the bottom end of the middle connecting shaft through the soft shaft, the tooth gauge shaft seat sleeve is sleeved outside the tooth gauge shaft seat, and the tooth gauge is installed on the tooth gauge shaft seat; The Z-axis driving mechanism is installed on the front side of the support plate, and the Z-axis driving mechanism includes a lower moving block, and the lower moving block is connected and fixed to the upper end of the flexible shaft to drive the flexible shaft to rise and fall. The sliding mechanism is installed on the front side of the support plate, and the sliding mechanism includes a connecting block, and the connecting block can slide relative to the support plate. The connecting block is connected and fixed to the middle shaft sleeve, and the connecting block abuts against the top of the lower moving block. The clamping mechanism is located below the connecting block and is connected and fixed to the sliding mechanism and can slide relative to the support plate, and the clamping mechanism can clamp the outer periphery of the gauge shaft seat sleeve.

2. The adaptive thread gauge automatic detection device according to claim 1 is characterized in that: The thread detection device also includes a ball bearing, which is sleeved outside the middle connecting shaft and located above the middle shaft sleeve.

3. The adaptive thread gauge automatic detection device according to claim 1 is characterized in that: The Z-axis driving mechanism also includes a support frame, a Z-axis motor, a Z-axis screw rod, a Z-axis nut, an upper moving block, a guide shaft, an upper guide sleeve, a lower guide sleeve and a tension spring. The support frame is fixedly mounted on the front side of the support plate, and an upper cantilever block, a middle cantilever block and a lower cantilever block are arranged on the support frame. The Z-axis motor is mounted on the upper cantilever block and arranged downward. The Z-axis screw rod is connected to the Z-axis motor driving and passes through the middle cantilever block, the upper moving block and the lower moving block in sequence, and its bottom end can be rotated The lower cantilever block is movably connected to the Z-axis nut and the Z-axis screw rod are threadedly connected and fixed on the upper moving block. The guide shaft is vertically connected between the middle cantilever block and the lower cantilever block. The upper guide sleeve and the lower guide sleeve are both sleeved outside the guide shaft, and the upper guide sleeve is connected and fixed to the upper moving block, and the lower guide sleeve is connected and fixed to the lower moving block. The lower end of the tension spring is connected to the lower moving block, and the upper end of the tension spring is connected to the top of the support plate.

4. The adaptive thread gauge automatic detection device according to claim 3 is characterized in that: The sliding mechanism also includes a fixed slider, a sliding guide rail, an upper L-shaped block and a lower L-shaped block. The fixed slider is connected and fixed to the front side of the support plate, the sliding guide rail is slidably connected to the fixed slider, the upper L-shaped block and the lower L-shaped block are arranged up and down and connected and fixed to the sliding guide rail, the connecting block is connected and fixed to the upper L-shaped block, and the clamping mechanism is connected and fixed to the lower L-shaped block.

5. The adaptive thread gauge automatic detection device according to claim 4 is characterized in that: The sliding mechanism also includes a limit switch and a sensing sheet. The limit switch is installed on the front side of the support plate. The sensing sheet is connected to the sliding guide rail and senses the limit switch when the sliding guide rail rises to a set position.

6. The adaptive thread gauge automatic detection device according to claim 4, characterized in that: The clamping mechanism includes a finger cylinder and two arc-shaped clamping blocks. The finger cylinder is connected and fixed on the lower L-shaped block. The two arc-shaped clamping blocks are respectively connected and fixed to two fingers of the finger cylinder. Under the drive of the finger cylinder, the two arc-shaped clamping blocks can clamp the tooth gauge shaft seat sleeve.

7. The adaptive thread gauge automatic detection device according to claim 4, characterized in that: The thread detection device also includes a CCD industrial camera, and the CCD industrial camera is installed on the front side of the support plate.

8. The adaptive thread gauge automatic detection device according to claim 1, characterized in that: The XY axis moving device comprises a moving frame, an X axis driving mechanism and a Y axis driving mechanism, wherein the Y axis driving mechanism is installed on the main frame, the moving frame is connected to the output end of the Y axis driving mechanism and can move along the Y axis by being driven by the Y axis driving mechanism, the X axis driving mechanism is installed on the moving frame, and the thread detection device is connected to the output end of the X axis driving mechanism and can move along the X axis by being driven by the X axis driving mechanism.

9. The adaptive thread gauge automatic detection device according to claim 8, characterized in that: The X-axis driving mechanism includes an X-axis motor, an X-axis lead screw, an X-axis nut, an X-axis guide rail and an X-axis slider. The X-axis motor is installed on the moving frame. The X-axis lead screw is arranged in the horizontal X-axis direction and is connected to the Z-axis motor. The X-axis nut is threadedly connected to the X-axis lead screw. The X-axis guide rail is parallel to the X-axis lead screw and is fixed to the moving frame. The X-axis slider is slidably connected to the X-axis guide rail. The thread detection device is simultaneously connected and fixed to the X-axis nut and the X-axis slider.

10. The adaptive thread gauge automatic detection device according to claim 9, characterized in that: The Y-axis driving mechanism includes a Y-axis motor, a Y-axis lead screw, a Y-axis nut, a Y-axis guide rail and a Y-axis slider. The Y-axis motor is installed on the main frame. The Y-axis lead screw is arranged in the horizontal Y-axis direction and is connected to the Y-axis motor. The Y-axis nut is threadedly connected to the Y-axis lead screw. The Y-axis guide rail is parallel to the Y-axis lead screw and is fixed to the main frame. The Y-axis slider is slidably connected to the Y-axis guide rail, and the bottom of the mobile frame is simultaneously connected and fixed to the Y-axis nut and the Y-axis slider.

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