Automatic detection machine for thread gauge of die casting

Abstract

The utility model belongs to the technical field of detection equipment, and particularly relates to an automatic detection machine for a die casting thread gauge, which comprises a main frame, a mounting platform, an XY-axis moving device and a thread detection device, the XY-axis moving device is mounted on the main frame, the mounting platform is mounted on the main frame and used for loading a die casting, and the thread detection device is mounted on the main frame. 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 die casting thread tooth gauge automatic detection machine can realize automatic tooth gauge detection of a threaded hole of a die casting, replaces manpower, is higher in production efficiency, and better guarantees detection quality.

Description

Technical Field

[0001] The utility model belongs to the technical field of detection equipment, in particular to an automatic detection machine for die-casting thread gauges. Background Art

[0002] Threaded holes in metal die-cast parts typically require thread gauge testing. Specifically, a thread gauge is used to check the center of the threaded hole. The thread gauge consists of a go gauge and a stop gauge. If the go gauge passes smoothly through the threaded hole when screwed into the threaded hole, the threaded hole has passed the go gauge test. If the stop gauge cannot pass through the threaded hole when screwed into the threaded hole, the threaded hole has passed the stop gauge test. However, existing methods of this type of testing generally require manual inspection, which is not only inefficient, but also time-consuming, labor-intensive, error-prone, and costly. Furthermore, existing technologies are unable to detect the number of threads with low vertical accuracy. Utility Model Content

[0003] The purpose of the utility model is to provide an automatic detection machine for die-casting thread gauges, which is intended to replace manual automation to perform thread detection on threaded holes of metal die-castings.

[0004] To achieve the above objectives, the present invention provides an automated die-casting thread gauge inspection machine, comprising a main frame, a mounting platform, an XY-axis moving device, and a thread detection device for performing thread gauge inspection on threaded holes in die-castings. 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 die-castings, and the thread detection device is located above the mounting platform and is fixedly connected to the output end of the XY-axis moving device.

[0005] 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. 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.

[0006] Optionally, the thread detection device includes a support plate, a Z-axis drive 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;

[0007] The support plate is connected and fixed to the output end of the Y-axis drive mechanism, the servo motor is fixed to the rear side of the support plate, the upper spindle is rotatably mounted on the front side of the support plate and is transmission-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, and the gauge is mounted on the gauge shaft seat;

[0008] 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.

[0009] Optionally, the Z-axis drive mechanism also includes a support frame, a Z-axis cylinder and a tension spring, the Z-axis cylinder is installed on the support frame and its piston rod is set downward, the lower moving block is connected to the piston rod of the Z-axis cylinder, 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.

[0010] 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 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.

[0011] Optionally, the sliding mechanism further includes a limit switch and a sensing plate, wherein the limit switch is mounted on the front side of the support plate, and the sensing plate is connected to the sliding guide rail and senses the limit switch when the sliding guide rail rises to a set position.

[0012] Optionally, 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 the 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.

[0013] 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.

[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 movable 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 movable 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 drive 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 is fixed on 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] One or more of the above-mentioned technical solutions in the automated die-casting thread gauge inspection machine provided by the present invention have at least one of the following technical effects: During operation, the die-casting to be threaded is loaded onto the mounting platform. The thread inspection device connected thereto is then driven and controlled by the XY-axis moving device to be moved above the threaded hole of the die-casting. Finally, the thread inspection device inspects the threaded hole on the die-casting to determine whether the threaded hole meets the requirements. The automated die-casting thread gauge inspection machine of the present invention can realize automated thread gauge inspection of the threaded holes of die-castings, replacing manual labor, achieving higher production efficiency and better quality assurance. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. 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 any creative labor.

[0018] Figure 1 This is a schematic structural diagram of an automated die-casting thread gauge inspection machine provided in an embodiment of the present invention.

[0019] Figure 2 This is a structural diagram of the automatic detection machine for die-casting thread gauges provided by an embodiment of the utility model, with part of the main frame hidden.

[0020] Figure 3 This is a structural diagram of the automatic detection machine for die-cast thread gauges provided by an embodiment of the utility model, with the main frame and installation platform hidden.

[0021] Figure 4 for Figure 3 Schematic diagram of the structure of the automatic detection machine for die-casting thread gauges from another perspective.

[0022] Figure 5 This is a structural schematic diagram of the thread detection device of the automatic detection machine for die-casting thread gauges provided in an embodiment of the utility model.

[0023] Figure 6 for Figure 5 A structural schematic diagram of the thread detection device of the die-casting thread gauge automatic detection machine from another perspective.

[0024] Figure 7 for Figure 5 A structural schematic diagram of the thread detection device of the die-casting thread gauge automatic detection machine from another perspective.

[0025] Figure 8 This is a structural schematic diagram of the thread detection device of the automatic detection machine for die-casting thread gauges provided by an embodiment of the utility model, with the CCD industrial camera hidden.

[0026] Figure 9 This is a schematic diagram of the structural decomposition of the thread detection mechanism of the automatic detection machine for die-casting thread gauges provided in an embodiment of the utility model.

[0027] Figure 10 This is a schematic diagram of the structural decomposition of the sliding mechanism of the automatic detection machine for die-casting thread gauges provided in an embodiment of the utility model.

[0028] Figure 11 for Figure 10 A structural schematic diagram from another perspective of the sliding mechanism of the automatic detection machine for die-casting thread gauges provided by an embodiment of the present invention.

[0029] Among them, the reference numerals in the figures are:

[0030] 10—Main frame 20—Installation platform 30—XY axis moving device

[0031] 31 - moving frame 32 - X-axis drive mechanism 33 - Y-axis drive mechanism

[0032] 40—Thread detection device 41—Support plate 42—Z-axis drive mechanism

[0033] 43 - Sliding mechanism 44 - Clamping mechanism 45 - Thread detection mechanism

[0034] 46—CCD industrial camera 321—X-axis motor 322—X-axis screw

[0035] 323—X-axis nut 324—X-axis guide rail 325—X-axis slider

[0036] 331—Y-axis motor 332—Y-axis screw 333—Y-axis nut

[0037] 334—Y-axis guide rail 335—Y-axis slider 42a—lower moving block

[0038] 42b—support frame 42c—Z-axis motor 42d—Z-axis screw

[0039] 42e—Z-axis nut 42f—upper moving block 42g—guide shaft

[0040] 42h—upper guide sleeve 42i—lower guide sleeve 431—connecting block

[0041] 432 - Fixed slider 433 - Sliding guide rail 434 - Upper L-shaped block

[0042] 435—Lower L-shaped block 436—Limit switch 437—Induction plate

[0043] 441 - Finger Cylinder 442 - Arc Clamp 45a - Servo Motor

[0044] 45b—upper spindle 45c—upper universal joint 45d—plum blossom bushing

[0045] 45e—Plum blossom shaft 45f—Lower universal joint 45g—Middle connecting shaft

[0046] 45h—middle shaft sleeve 45i—flexible shaft 45j—gauge shaft seat

[0047] 45k - thread gauge shaft sleeve 45l - thread gauge 45n - ball bearing

[0048] 42b1—upper cantilever block 42b2—middle cantilever block 42b3—lower cantilever block. DETAILED DESCRIPTION

[0049] The following describes the embodiments of the present invention in detail, 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 explain the embodiments of the present invention, but should not be understood as limiting the present invention.

[0050] 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", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship 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 device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0051] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. 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, "plurality" means two or more, unless otherwise specifically defined.

[0052] In the embodiments of the present invention, unless otherwise expressly specified or limited, the terms "installed," "connected," "connected," "fixed," etc. should be understood in a broad sense. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium; internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of the present invention based on specific circumstances.

[0053] In one embodiment of the present invention, Figures 1 to 4 and Figure 9 As shown, an automatic inspection machine for die-casting thread gauges is provided, comprising 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 fixedly connected to the output end of the XY-axis moving device 30.

[0054] Further, if Figures 2-4As 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 mounted on the main frame 10, and the moving frame 31 is connected to the output end of the Y axis driving mechanism 33 and can be moved along the Y axis by the drive of the Y axis driving mechanism 33, and the X axis driving mechanism 32 is mounted 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 be moved along the X axis by 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, thereby driving the X axis driving mechanism 32 on the moving frame 31 to move along the Y axis direction, and then driving the thread detection device 40 connected thereto 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.

[0055] The utility model discloses an automatic detection machine for die-casting thread gauges, which can realize automatic detection of thread gauges of die-casting thread holes, replaces manual labor, has higher production efficiency and better guarantees detection quality.

[0056] Further, if Figures 4-5 As shown, 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. 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. 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 main shaft 45b is rotatably mounted 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 main shaft 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 on the outside of the middle connecting shaft 45g, the gauge shaft seat 45j is connected to the bottom end of the middle connecting shaft 45g through the soft shaft 45i, the gauge shaft seat sleeve 45k is sleeved on the outside of the gauge shaft seat 45j, and the gauge 45l is mounted on the gauge shaft seat 45j;

[0057] 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 shaft sleeve, and its upper flange is also pressed against the top of the connecting block 431. 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. 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 shaft sleeve, and its upper flange is also pressed against the top of the clamping mechanism 44 that clamps the gauge shaft seat sleeve 45k.

[0058] That is, the die-casting thread gauge automatic detection machine of the embodiment of the utility model can also realize the adaptive gauge 45l detection of the threaded holes 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 threaded hole thread values.

[0059] The following combined Figures 1 to 11 The working principle of the automatic detection machine for die casting thread gauges according to the embodiment of the utility model is described in more detail:

[0060] During operation, the die-casting that needs to be tested for threaded holes is loaded on the mounting platform 20, and then the thread detection 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 gauge shaft seat sleeve 45k, and the Z axis driving mechanism 42 of the thread detection device 40 controls its lower moving block to move downward, because the lower moving block 42a is fixedly connected to the upper end of the flexible shaft 45i, so 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 45 f, 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 in sleeve fit 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 edge of the threaded hole of the die-casting. The Z-axis driving mechanism 42 is paused 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 45c. The plum blossom shaft sleeve 45d is driven to rotate, and the plum blossom shaft 45e is also rotated 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. The servo motor 45a is paused. In this process, due to the provision of the flexible shaft 45 5i, 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, thereby realizing 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 circles of the gauge 45l screwed out of the threaded hole, thereby completing the detection of a single threaded hole, and the number of circles can be calculated by software later to determine whether the threaded hole meets the requirements.

[0061] It should be noted that the die-cast thread gauge automatic inspection machine in the embodiment of the present invention also needs to use a controller to control the electric components in the entire equipment, and accordingly a software program needs to be set up. Since the embodiment of the present invention requests protection for the structural scheme, the technical personnel in this field can implement the design of the corresponding software according to the structural scheme disclosed in this embodiment. This embodiment does not make unnecessary elaboration on the software that cooperates with it.

[0062] 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 onto the outside of the middle connecting shaft 45g and located above the middle shaft sleeve 45h. Specifically, the provision of ball bearing 45n ensures that even when the middle connecting shaft 45g generates heat due to friction during operation, it still has sufficient lubrication for rotation, thereby ensuring the reliability of the thread detection device 40 for long-term, high-intensity use.

[0063] In one embodiment of the present invention, Figure 5 and 10As shown in Figures 11 to 11, the Z-axis drive 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). 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 provided 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 driven and 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. Behind 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 mounting structure. On the same side, an upper cantilever block 42b1, a middle cantilever block 42b2 and a lower cantilever block 42b3 are provided. 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 still remains in 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, and then drives 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 descending and screwing-in actions of the gauge 45l are separately controlled.

[0064] In another embodiment of the present invention, the Z-axis drive mechanism 42 further includes a support frame (not shown), a Z-axis cylinder (not shown) and a tension spring (not shown), wherein the Z-axis cylinder is mounted on the support frame and its piston rod is arranged downward, the lower moving block 42a is connected to the piston rod of the Z-axis cylinder, 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. In this way, the lower moving block 42a can be directly controlled to move downward by the Z-axis cylinder, thereby driving the tooth gauge to move downward 451. It should be noted that the movement method of the lower moving block 42a in this embodiment can refer to the description of the above embodiment.

[0065] In one embodiment of the present invention, Figure 5 and 10As shown in Figures 11 to 12, 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 vertically 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 stationary member, while the sliding guide rail 433, which slidably cooperates with it, serves as a movable member capable of sliding 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 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 and ensuring that the arrangement of the connecting block 431 and the clamping mechanism 44 does not interfere with the normal upward and downward movement of the thread gauge 45l. The arrangement of the upper L-shaped block 434 and the lower L-shaped block 435 allows the connecting block 431 and the clamping mechanism 44, which are connected to the sliding guide rail 433, to be separated by a distance from the sliding guide rail 433, ensuring safety and reliability in use.

[0066] In one embodiment of the present invention, Figure 5 As shown, the sliding mechanism 43 further includes a limit switch 436 and a sensing plate 437. The limit switch 436 is mounted on the front side of the support plate 41. The sensing plate 437 is connected to the sliding guide rail 433 and senses 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 sensing plate 437 connected thereto senses the limit switch 436 mounted 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, which implements overall control and sends corresponding signals for executing other programs to the servo motor 45a and the Z-axis motor 42c.

[0067] 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 gauge shaft seat sleeve 45k. Specifically, the finger cylinder 441 controls the closing of the two arc-shaped clamping blocks 442, thereby being able to adapt and clamp to the outer periphery of the gauge shaft seat sleeve 45k and abut against the upper flange of the gauge shaft seat sleeve 45k. Controlling the loosening of the two arc-shaped clamping blocks 442 can release the clamping of the gauge shaft seat sleeve 45k. The structure is simple and applicable.

[0068] 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 mounted on the front side of the support plate 41. Specifically, because the CCD industrial camera 46 is mounted on the support plate 41, it is driven by the XY axis moving device 30 synchronously with the other components of the thread detection device 40. Through it, the threaded hole on the die-casting can be photographed and calibrated. Then, after receiving the signal, the controller can more accurately control the thread detection device 40 to perform hole entry detection on the threaded hole on the die-casting.

[0069] In one embodiment of the present invention, Figures 3-4 As shown, the X-axis drive 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 movable frame 31, and 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, and the X-axis guide rail 324 is parallel to the X-axis screw rod 322 and is fixed on the movable 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, 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.

[0070] In one embodiment of the present invention, Figure 2As shown, the Y-axis drive 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, and 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. The bottom of the movable frame 31 is also 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, 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, 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.

[0071] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An automatic detection machine for die casting thread gauges, characterized in that: The machine comprises a main frame, a mounting platform, an XY-axis moving device, and a thread detection device for performing thread gauge detection on the threaded holes of die-castings. 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-castings, and the thread detection device is located above the mounting platform and is fixedly connected to the output end of the XY-axis moving device. 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. 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.

2. The die casting thread gauge automatic detection machine according to claim 1, characterized in that: The thread detection device includes a support plate, a Z-axis drive 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 Y-axis drive mechanism, the servo motor is fixed to the rear side of the support plate, the upper spindle is rotatably mounted on the front side of the support plate and is transmission-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, and the gauge is mounted on the 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.

3. The die casting thread gauge automatic detection machine according to claim 2, characterized in that: The Z-axis drive mechanism also includes a support frame, a Z-axis cylinder and a tension spring. The Z-axis cylinder is installed on the support frame with its piston rod facing downward. The lower moving block is connected to the piston rod of the Z-axis cylinder. 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 die casting thread gauge automatic detection machine according to claim 2, 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 are 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 die casting thread gauge automatic detection machine according to claim 4, characterized in that: The sliding mechanism also includes a limit switch and a sensing piece. The limit switch is installed on the front side of the support plate. The sensing piece is connected to the sliding guide rail and senses the limit switch when the sliding guide rail rises to a set position.

6. The die casting thread gauge automatic detection machine 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 the two fingers of the finger cylinder. Under the drive of the finger cylinder, the two arc-shaped clamping blocks can clamp the gauge shaft seat sleeve.

7. The die casting thread gauge automatic testing machine according to claim 4, characterized in that: The thread detection device further includes a CCD industrial camera, which is installed on the front side of the support plate.

8. The die casting thread gauge automatic testing machine according to claim 1, characterized in that: 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 X-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 to the mobile 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.

9. The die casting thread gauge automatic testing machine according to claim 8, characterized in that: The Y-axis drive 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 is 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 also connected and fixed to the Y-axis nut and the Y-axis slider.

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