Adaptive Thread Gauge Automatic Detection Equipment

Abstract

The present invention belongs to the technical field of detection equipment, and particularly relates to an automatic detection equipment for an adaptive thread gauge, which includes a general machine frame, an installation platform, an XY-axis moving device, and a thread detection device. The XY-axis moving device is installed on the general machine frame. The installation platform is installed on the general machine frame and is used for loading die-castings. The thread detection device is located above the installation platform and is fixedly connected to the output end of the XY-axis moving device. The automatic detection equipment for the adaptive thread gauge of the present invention can realize the 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 achieved, which is particularly suitable for the detection of threaded holes with high precision requirements for the thread tooth values of threaded holes. It replaces manual labor, has higher production efficiency, and the detection quality is more 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. The Z-axis driving mechanism includes a lower moving block, which is fixedly connected to the upper end of the flexible shaft to drive the flexible shaft to move up and down. The sliding mechanism is installed on the front side of the support plate. The sliding mechanism includes a connecting block, which can slide relative to the support plate. The connecting block is fixedly connected to the middle shaft sleeve. The connecting block abuts above the lower moving block. The clamping mechanism is located below the connecting block and is fixedly connected to the sliding mechanism and can slide relative to the support plate. Moreover, the clamping mechanism can clamp the outer periphery of the tooth gauge shaft seat sleeve.

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

[0008] Optionally, the Z-axis driving mechanism further includes 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 installed on the front side of the support plate. There are an upper cantilever block, a middle cantilever block, and a lower cantilever block arranged on the support frame. The Z-axis motor is installed on the upper cantilever block and faces downward. The Z-axis lead screw is drivingly connected to the Z-axis motor and sequentially passes through the middle cantilever block, the upper moving block, and the lower moving block, and then its bottom end is rotatably connected to the lower cantilever block. The Z-axis nut is threadedly connected to the Z-axis lead screw and fixed on the upper moving block. The guide shaft is vertically connected between the middle cantilever block and the lower cantilever block. Both the upper guide sleeve and the lower guide sleeve are sleeved outside the guide shaft. Moreover, the upper guide sleeve is fixedly connected to the upper moving block, and the lower guide sleeve is fixedly connected 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 end of the support plate.

[0009] Optionally, the sliding mechanism further includes a fixed slider, a sliding guide rail, an upper L-shaped block, and a lower L-shaped block. The fixed slider is fixedly connected 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 fixedly connected to the sliding guide rail. The connecting block is fixedly connected to the upper L-shaped block, and the clamping mechanism is fixedly connected to the lower L-shaped block.

[0010] Optionally, the sliding mechanism further includes a limit switch and an induction piece. The limit switch is installed on the front side of the support plate. The induction piece is connected to the sliding guide rail and realizes induction with 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 fixedly connected to the lower L-shaped block, and the two arc-shaped clamping blocks are respectively fixedly connected to the two fingers of the finger cylinder. Driven by 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 driven by the Y-axis driving mechanism. The X-axis driving mechanism is installed on the moving frame. The thread detection device is connected to the output end of the X-axis driving mechanism and can move along the X-axis direction driven by the X-axis driving mechanism.

[0014] Optionally, 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 on 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.

[0015] Optionally, 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 on the main frame. The Y-axis slider is slidably connected to the Y-axis guide rail. The bottom of the moving frame is simultaneously connected and fixed to the Y-axis nut and the Y-axis slider.

[0016] One or more of the above technical solutions in the adaptive thread gauge automatic detection device provided by the embodiments of the present invention have at least one of the following technical effects: During operation, the die-casting part to be subjected to thread hole thread detection is loaded on the installation platform, and then the thread detection device connected thereto is driven and controlled by the XY-axis moving device to move above the thread hole of the die-casting part; 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. Since the lower moving block is fixedly connected to the upper end of the flexible shaft, 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, thread gauge shaft seat, thread gauge shaft seat sleeve and thread gauge directly or indirectly connected to the flexible shaft to move downward relative to the support plate guided by the sliding mechanism. Since the plum blossom shaft is sleeved and matched with the plum blossom shaft sleeve, the plum blossom shaft can move downward relative to the plum blossom shaft sleeve until the thread gauge contacts or approaches the edge of the thread hole of the die-casting part, and the Z-axis driving mechanism pauses, and the clamping mechanism releases the clamping of the thread gauge shaft seat sleeve; at this time, the servo motor starts to rotate forward, driving the upper main shaft to rotate. The upper main shaft drives the plum blossom shaft sleeve to rotate through the upper universal joint. Since the plum blossom shaft is matched with the plum blossom shaft sleeve, the plum blossom shaft also rotates. 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 controlling the rotation of the thread gauge. The rotating thread gauge is screwed into the thread hole of the die-casting part until it is screwed to the bottom of the thread hole, and the servo motor pauses. In this process, because there is a flexible shaft and the clamping mechanism releases the clamping of the thread gauge shaft seat sleeve, even if the thread hole to be detected is not a vertical hole, under the swing of the flexible shaft and the thread gauge shaft seat sleeve, the thread gauge can be screwed into the thread hole to achieve self-adaptation; at this time, the Z-axis driving mechanism starts to reset, and the servo motor starts to rotate in reverse until the thread gauge is screwed out of the thread hole of the die-casting part. The servo motor records the number of turns of the thread gauge screwed out of the thread hole, thus completing the detection work of a single thread hole. Subsequently, the software can calculate this number of turns to determine whether the thread hole meets the requirements.

[0017] The adaptive thread gauge automatic detection device of the present invention can realize the adaptive thread gauge detection of the thread holes of die-casting parts. Even if there are some non-vertical thread holes, it can still realize automatic detection. It is especially suitable for the detection of thread holes with high precision requirements for the thread tooth values of thread holes, replacing manual work, with higher production efficiency and more guaranteed detection quality. Description of the Drawings

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0019] Figure 1 It is a schematic structural diagram of the adaptive thread gauge automatic detection device provided by the embodiment of the present invention.

[0020] Figure 2 It is a schematic structural diagram of the adaptive thread gauge automatic detection device provided by the embodiment of the present invention after hiding a part of the total frame.

[0021] Figure 3 It is a schematic structural diagram of the adaptive thread gauge automatic detection device provided by the embodiment of the present invention after hiding a part of the total frame and the installation platform.

[0022] Figure 4 For Figure 3 It is a schematic structural diagram of another perspective of the adaptive thread gauge automatic detection device in

[0023] Figure 5 It is a schematic structural diagram of the thread detection device of the adaptive thread gauge automatic detection device provided by the embodiment of the present invention.

[0024] Figure 6 For Figure 5 It is a schematic structural diagram of another perspective of the thread detection device of the adaptive thread gauge automatic detection device in

[0025] Figure 7 For Figure 5 It is a schematic structural diagram of yet another perspective of the thread detection device of the adaptive thread gauge automatic detection device in

[0026] Figure 8 It is a schematic structural diagram of the thread detection device of the adaptive thread gauge automatic detection device provided by the embodiment of the present invention after hiding the CCD industrial camera.

[0027] Figure 9 It is an exploded schematic structural diagram of the thread detection mechanism of the adaptive thread gauge automatic detection device provided by the embodiment of the present invention.

[0028] Figure 10 It is an exploded schematic structural diagram of the sliding mechanism of the adaptive thread gauge automatic detection device provided by the embodiment of the present invention.

[0029] Figure 11 For Figure 10Structural schematic diagram of another perspective of the sliding mechanism of the adaptive thread gauge automatic detection device in

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

[0031] 10—Total machine 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 lead screw

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

[0037] 331—Y-axis motor 332—Y-axis lead 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 lead 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—Inductive sheet

[0044] 441—Finger cylinder 442—Arc-shaped clamping block 45a—Servo motor

[0045] 45b—Upper main shaft 45c—Upper universal joint 45d—Plum blossom bushing

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

[0047] 45h—Middle bushing 45i—Flexible shaft 45j—Thread gauge shaft seat

[0048] 45k—Thread gauge shaft seat sleeve 45l—Thread gauge 45n—Ball bearing

[0049] 42b1 - upper cantilever block, 42b2 - middle cantilever block, 42b3 - lower cantilever block. Detailed implementation mode

[0050] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The following is by reference to the attached Figures 1 to 11 The described embodiments are exemplary and are intended to explain the embodiments of the present invention, and should not be construed as a limitation of the present invention.

[0051] In the description of the embodiments of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the embodiments of the present invention 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 should not be construed as a limitation of the present invention.

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

[0053] In the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0054] In an embodiment of the present invention, as Figures 1 to 4 and Figure 9As shown in the figure, an automatic detection device for an adaptive thread gauge is provided, which includes a general machine frame 10, an installation platform 20, an XY-axis moving device 30, and a thread detection device 40. The XY-axis moving device 30 is installed on the general machine frame 10. The installation platform 20 is installed on the general machine frame 10 and is used for loading die-castings. The thread detection device 40 is located above the installation platform 20 and is fixedly connected to the output end of the XY-axis moving device 30. The thread detection device 40 includes a support plate 41, a Z-axis driving mechanism 42, a sliding mechanism 43, a clamping mechanism 44, and a thread detection mechanism 45. The thread detection mechanism 45 includes a servo motor 45a, an upper main shaft 45b, an upper universal joint 45c, a plum blossom bushing 45d, a plum blossom shaft 45e, a lower universal joint 45f, a middle connecting shaft 45g, a middle bushing 45h, a flexible shaft 45i, a thread gauge shaft seat 45j, a thread gauge shaft seat sleeve 45k, and a thread gauge 45l.

[0055] Further, as Figures 4 to 5 shown, the support plate 41 is fixedly connected 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 main shaft 45b is rotatably installed on the front side of the support plate 41 and is in transmission connection with the servo motor 45a. The plum blossom bushing 45d is connected to the bottom end of the upper main shaft 45b through the upper universal joint 45c. The plum blossom shaft 45e is inserted into the plum blossom bushing 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 bushing 45h is sleeved outside the middle connecting shaft 45g. The thread gauge shaft seat 45j is connected to the bottom end of the middle connecting shaft 45g through the flexible shaft 45i. The thread gauge shaft seat sleeve 45k is sleeved outside the thread gauge shaft seat 45j. The thread gauge 45l is installed on the thread gauge shaft seat 45j.

[0056] Even further, as Figures 6 to 7As shown, the Z-axis drive mechanism 42 is installed on the front side of the support plate 41. The Z-axis drive mechanism 42 includes a lower moving block 42a. The lower moving block 42a is fixedly connected to the upper end of the flexible shaft 45i to drive the flexible shaft 45i to move up and down. The sliding mechanism 43 is installed on the front side of the support plate 41. The sliding mechanism 43 includes a connecting block 431. The connecting block 431 can slide relative to the support plate 41. The connecting block 431 is fixedly connected to the middle shaft sleeve 45h. Preferably, the middle shaft sleeve 45h is a T-shaped shaft sleeve, and its upper flange also presses against the top of the connecting block 431. The connecting block 431 abuts above 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 thread gauge shaft seat sleeve 45k. Preferably, the thread gauge shaft seat sleeve 45k is a T-shaped shaft sleeve, and its upper flange also presses against the top of the clamping mechanism 44 that clamps the thread gauge shaft seat sleeve 45k.

[0057] The self-adaptive thread gauge automatic detection device of the embodiment of the present invention can realize the detection of the thread holes of die-castings by the self-adaptive thread gauge 45l. Even if there are some non-vertical thread holes, it can still realize automatic detection. It is especially suitable for the detection of thread holes with high precision requirements for the thread tooth values of the thread holes, replacing manual work, with higher production efficiency and more guaranteed detection quality.

[0058] Combined with Figures 1 to 11 The working principle of the self-adaptive thread gauge automatic detection device of the embodiment of the present invention will be described in detail:

[0059] During operation, the die-casting part that needs to be inspected for the thread of the threaded hole is loaded on the mounting platform 20, and then the thread inspection device 40 connected thereto is driven and controlled by the XY-axis moving device 30 to move above the threaded hole of the die-casting part; at this time, the clamping mechanism 44 first clamps the outer periphery of the gauge shaft seat sleeve 45k, and the Z-axis driving mechanism 42 of the thread inspection device 40 controls the downward movement of its lower moving block 42a. Since the upper end of the flexible shaft 45i is fixedly connected to the lower moving block 42a, the lower moving block 42a will drive the flexible shaft 45i and the plum blossom shaft 45e, lower universal joint 45f, middle connecting shaft 45g, middle shaft sleeve 45h, flexible shaft 45i, gauge shaft seat 45j, gauge shaft seat sleeve 45k and gauge 45l directly or indirectly connected to the flexible shaft 45i to move downward relative to the support plate 41 guided by the sliding mechanism 43. Since the plum blossom shaft 45e is sleeved and matched with the plum blossom shaft sleeve 45d, the plum blossom shaft 45e can move downward relative to the plum blossom shaft sleeve 45d until the gauge 45l contacts or approaches the edge of the threaded hole of the die-casting part, and then the Z-axis driving mechanism 42 pauses and the clamping mechanism 44 releases the clamping of the gauge shaft seat sleeve 45k; at this time, the servo motor 45a starts to rotate forward, driving the upper main shaft 45b to rotate. The upper main shaft 45b drives the plum blossom shaft sleeve 45d to rotate through the upper universal joint 45c. Since the plum blossom shaft 45e is matched with the plum blossom shaft sleeve 45d, the plum blossom shaft 45e also rotates. 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 gauge shaft seat 45j to rotate, thereby controlling the rotation of the gauge 45l. The rotating gauge 45l is screwed into the threaded hole of the die-casting part until it reaches the bottom of the threaded hole, and then the servo motor 45a pauses. In this process, since there is a flexible shaft 45i and the clamping mechanism 44 releases the clamping of the gauge shaft seat sleeve 45k, even if the threaded hole to be inspected is not a vertical hole, the gauge 45l can be screwed into the threaded hole under the swing of the flexible shaft 45i and the gauge shaft seat sleeve 45k to achieve self-adaptation; at this time, the Z-axis driving mechanism 42 starts to reset, and the servo motor 45a starts to rotate in reverse until the gauge 45l is screwed out of the threaded hole of the die-casting part. The servo motor 45a records the number of turns of the gauge 45l screwed out of the threaded hole, thus completing the inspection of a single threaded hole. Subsequently, the software can calculate this number of turns to determine whether the threaded hole meets the requirements.

[0060] It should be noted that the adaptive thread gauge automatic detection device in the embodiments of the present invention also needs to be controlled by a controller to control the electric components in the entire device. Correspondingly, a software program also needs to be set. Since the embodiments of the present invention claim to protect a structural solution, those skilled in the art can design the corresponding software according to the structural solution disclosed in this embodiment, and this embodiment will not unnecessarily elaborate on the software cooperating with it.

[0061] In an embodiment of the present invention, as Figures 8 to 9 shown, the thread detection device 40 further includes a ball bearing 45n, and the ball bearing 45n is sleeved outside the middle connecting shaft 45g and above the middle shaft sleeve 45h. Specifically, the setting of the ball bearing 45n can ensure that when the middle connecting shaft 45g generates heat due to working friction, there is still sufficient lubrication for rotation, ensuring the reliability of the long-term high-intensity use of the thread detection device 40.

[0062] In an embodiment of the present invention, as Figure 5 and 10As shown in FIGS. 0 to 11, the Z-axis driving mechanism 42 further includes a support frame 42b, a Z-axis motor 42c, a Z-axis lead screw 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 installed on the front side of the support plate 41. An upper cantilever block 42b1, a middle cantilever block 42b2, and a lower cantilever block 42b3 are provided on the support frame 42b. The Z-axis motor 42c is installed on the upper cantilever block 42b1 and faces downward. The Z-axis lead screw 42d is drivingly connected to the Z-axis motor 42c and sequentially passes through the middle cantilever block 42b2, the upper moving block 42f, and the lower moving block 42a, and its bottom end is rotatably connected to the lower cantilever block 42b3. The Z-axis nut 42e is threadedly connected to the Z-axis lead screw 42d and fixed to the upper moving block 42f. The guide shaft 42g is vertically connected between the middle cantilever block 42b2 and the lower cantilever block 42b3. Both the upper guide sleeve 42h and the lower guide sleeve 42i are sleeved outside the guide shaft 42g, and the upper guide sleeve 42h is fixedly connected to the upper moving block 42f, and the lower guide sleeve 42i is fixedly connected 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 end of the support plate. Specifically, the support frame 42b is locked and connected to the front side of the support plate 41 as a support and installation structure. An upper cantilever block 42b1, a middle cantilever block 42b2, and a lower cantilever block 42b3 are provided on the same side. The Z-axis motor 42c drives the Z-axis lead screw 42d to rotate, and the Z-axis nut 42e threadedly connected to the Z-axis lead screw 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 against the lower guide sleeve 42i, thereby forcing the lower moving block 42a connected to the lower guide sleeve 42i to move downward. The lower moving block 42a is fixedly connected to the upper end of the flexible shaft 45i. Then, during the downward movement of the lower moving block 42a, it will drive the flexible shaft 45i and the plum blossom shaft 45e, the lower universal 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 directly or indirectly connected to the flexible shaft 45i to move downward relative to the support plate 41 guided by the sliding mechanism 43.Among them, during the downward movement of the lower moving block 42a, the tension spring connected to its bottom end is also stretched. Then, when the Z-axis motor 42c starts to reset, only the upper moving block 42f is controlled to move upward, and the lower moving block 42a still remains in a relatively lower position to ensure that the thread gauge 45l is screwed into the threaded hole for inspection work. After the thread gauge 45l is reversed and unscrewed from the threaded hole, under the action of the tension spring connected to the top end of the support plate at the top, the lower moving block 42a is pulled upward, thereby driving the thread gauge 45l upward to wait for the next work. This structure very cleverly avoids the direct drive of the Z-axis motor 42c to reset and directly drive the upward movement of the thread gauge 45l indirectly controlled by it, ensuring that the downward movement and screwing-in action of the thread gauge 45l are separated and individually controlled.

[0063] In an embodiment of the present invention, as Figure 5 and 10 ~11 show, 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 fixedly connected 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 fixedly connected to the sliding guide rail 433. The connecting block 431 is fixedly connected to the upper L-shaped block 434, and the clamping mechanism 44 is fixedly connected to the lower L-shaped block 435. Specifically, the fixed slider 432 is fixedly connected to the front side of the support plate 41 as a stationary part, and the sliding guide rail 433 slidably cooperating with it is a moving part that can slide up and down relative to the fixed slider 432. Thus, when the flexible shaft 45i is driven downward by the lower moving block 42a, the connecting block 431 also moves downward under the guiding action of the sliding guide rail 433, and the clamping mechanism 44 also moves downward under the guiding action of the sliding guide rail 433 to achieve synchronization, ensuring that the settings of the connecting block 431 and the clamping mechanism 44 do not interfere with the normal up and down movement of the thread gauge 45l. Among them, the settings of the upper L-shaped block 434 and the lower L-shaped block 435 can both enable the connecting block 431 and the clamping mechanism 44 connected to the sliding guide rail 433 to be spaced apart from the sliding guide rail 433 by a certain distance, ensuring the safety and reliability of use.

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

[0065] In an 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 fixedly connected to the lower L-shaped block 435. The two arc-shaped clamping blocks 442 are respectively fixedly connected to the two fingers of the finger cylinder 441. Driven by 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 control the closing of the two arc-shaped clamping blocks 442, so as to be able to adaptively clamp the outer circumference of the tooth gauge shaft seat sleeve 45k and abut against the upper flange of the tooth gauge shaft seat sleeve 45k. By controlling the loosening of the two arc-shaped clamping blocks 442, the clamping of the tooth gauge shaft seat sleeve 45k can be released. The structure is simple and applicable.

[0066] In an embodiment of the present invention, as Figure 5 shown, the thread detection device 40 further includes a CCD industrial camera 46. The CCD industrial camera 46 is installed on the front side of the support plate 41. Specifically, since 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 it, the thread hole on the die casting can be photographed and calibrated first, and then the controller can more accurately control the thread detection device 40 to perform the hole insertion detection on the thread hole on the die casting after receiving this signal.

[0067] In an embodiment of the present invention, as 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. The Y-axis driving mechanism 33 is installed on the overall 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 direction under the drive of the Y-axis driving mechanism 33. The X-axis driving mechanism 32 is installed on the moving frame 31. 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 direction under 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, thus driving the X-axis driving mechanism 32 on the moving frame 31 to move along the Y-axis direction. Then, the X-axis driving mechanism 32 drives the connected thread detection device 40 to move along the X-axis direction. In this way, under the combined action of the X-axis driving mechanism 32 and the Y-axis driving mechanism 33, the movement of the thread detection device 40 in the Y-axis and X-axis directions is controlled.

[0068] In an embodiment of the present invention, as Figures 3 to 4 shown, the X-axis driving mechanism 32 includes an X-axis motor 321, an X-axis lead screw 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 lead screw 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 lead screw 322. The X-axis guide rail 324 is parallel to the X-axis lead screw 322 and is fixed on the moving frame 31. The X-axis slider 325 is slidably connected to the X-axis guide rail 324. The thread detection device 40 is fixedly connected to both the X-axis nut 323 and the X-axis slider 325. Specifically, the X-axis motor 321 drives the connected X-axis lead screw 322 to rotate, driving the X-axis nut 323 threadedly connected to the X-axis lead screw 322 to move along the X-axis, and further driving the connected thread detection device 40 to slide along the direction of the X-axis slider 325 on the X-axis guide rail 324, realizing the control of the movement of the thread detection device 40 along the X-axis direction, and the movement process is reliable and stable.

[0069] In an embodiment of the present invention, as Figure 2As shown in the figure, the Y-axis driving mechanism 33 includes a Y-axis motor 331, a Y-axis lead screw 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 general frame 10. The Y-axis lead screw 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 lead screw 332. The Y-axis guide rail 334 is parallel to the Y-axis lead screw 332 and is fixed on the general frame 10. The Y-axis slider 335 is slidably connected to the Y-axis guide rail 334. The bottom of the moving frame 31 is fixedly connected to both the Y-axis nut 333 and the Y-axis slider 335. Specifically, the Y-axis motor 331 drives the Y-axis lead screw 332 connected thereto to rotate, driving the Y-axis nut 333 threadedly connected to the Y-axis lead screw 332 to move along the X-axis, and further driving the moving frame 31 connected thereto to slide with the Y-axis slider 335 as a guide in the direction of the Y-axis guide rail 334, indirectly realizing the control of the movement of the thread detection device 40 along the Y-axis direction, and the movement process is reliable and stable.

[0070] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present invention shall be included within 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 gauge shaft seat is connected to the bottom end of the middle connecting shaft through the soft shaft, the gauge shaft seat sleeve is sleeved outside the gauge shaft seat, the gauge is installed on the gauge shaft seat, and under the swing of the soft shaft and the gauge shaft seat sleeve, the gauge is screwed into the threaded hole of the die casting to achieve self-adaptation; The Z-axis driving mechanism is installed on the front side of the support plate, the Z-axis driving mechanism includes a lower moving block, the lower moving block is connected and fixed with 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, the sliding mechanism includes a connecting block, the connecting block can slide relative to the support plate, the connecting block is connected and fixed with the middle shaft sleeve, 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 with the sliding mechanism and can slide relative to the support plate, and the clamping mechanism can clamp the outer periphery of the tooth gauge shaft seat sleeve; The sliding mechanism further comprises a fixed slider, a sliding guide rail, an upper L-shaped block and a lower L-shaped block, wherein 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; 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.

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 1, 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.

5. The adaptive thread gauge automatic detection device according to claim 1, 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.

6. The self-adaptive thread gauge automatic detection device according to claim 3, 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.

7. The adaptive thread gauge automatic detection device according to claim 6, 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.

8. The adaptive thread gauge automatic detection device according to claim 7, 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.

Images