Automatic internal thread testing machine

Abstract

This utility model discloses an automatic internal thread inspection machine, including a frame, a worktable mounted on the frame, and an inspection device. The inspection device includes a support and at least one inspection rod, each inspection rod being connected to the spindle of a drive motor. Each inspection rod is equipped with a torque sensor, and each inspection rod has an external thread at its bottom end. The automatic internal thread inspection machine also includes an automatic feeding device and a pushing device. The pushing device includes a first pushing plate, a first pushing cylinder, a second pushing plate, and a second pushing cylinder. The first pushing cylinder drives the first pushing plate to reciprocate along the X direction; the second pushing cylinder drives the second pushing plate to reciprocate along the Y direction. The technical solution provided by this utility model realizes continuous assembly line operation of "feeding, inspection, and unloading," significantly shortening the inspection cycle of individual parts and improving the inspection accuracy of parts.

Description

Technical Field

[0001] This utility model relates to the field of testing equipment technology, and in particular to an automatic internal thread testing machine. Background Technology

[0002] In the field of mechanical manufacturing, the internal threads of parts with high precision requirements need to be specially inspected. Traditional inspection methods are mostly manual, involving manually screwing screws into and out of the threaded holes one by one to determine whether the threads meet the standards. This method is not only inefficient but also susceptible to human error, making it difficult to guarantee inspection accuracy.

[0003] With technological advancements, devices for automatically detecting internal threads have emerged. However, most existing such devices still require manual feeding, limiting their automation capabilities and leaving limited room for improvement in detection efficiency.

[0004] To address the aforementioned technical problems, this utility model provides an automatic internal thread inspection machine, which features automatic feeding, automatic inspection, and automatic unloading functions, effectively improving inspection efficiency and accuracy, and providing a superior solution for internal thread inspection. Utility Model Content

[0005] In view of the shortcomings of the prior art, the purpose of this utility model is to provide an automatic internal thread inspection machine, which aims to solve the technical problem that the automation level of internal thread inspection in the prior art is insufficient and it is difficult to meet the requirements of high-efficiency and high-precision inspection.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] An automatic internal thread testing machine includes a frame, a worktable mounted on the frame, and a testing device. The testing device includes a support and at least one testing rod. Each testing rod is connected to the spindle of a drive motor. Each testing rod is equipped with a torque sensor, and each testing rod has an external thread at its bottom end. The automatic internal thread testing machine also includes an automatic feeding device and a pushing device. The pushing device includes a first pushing plate, a first pushing cylinder, a second pushing plate, and a second pushing cylinder. The first pushing cylinder drives the first pushing plate to reciprocate along the X direction, and the second pushing cylinder drives the second pushing plate to reciprocate along the Y direction.

[0008] Furthermore, in the aforementioned automatic internal thread inspection machine, each drive motor is mounted on a slide plate, and each slide plate is slidably connected to the support. A lifting cylinder is mounted on the support corresponding to each slide plate, and each lifting cylinder is used to drive the corresponding slide plate to reciprocate in the vertical direction.

[0009] Furthermore, in the aforementioned automatic internal thread inspection machine, the automatic feeding device is a vibratory feeder feeding device.

[0010] Furthermore, in the aforementioned automatic internal thread testing machine, a vertical support plate is provided on the frame, and a first pusher cylinder is provided on the side of the vertical support plate; the first pusher plate is slidably provided on the top of the vertical support plate.

[0011] Furthermore, in the aforementioned automatic internal thread inspection machine, the worktable includes a table and multiple support legs disposed at the bottom of the table.

[0012] Furthermore, in the aforementioned automatic internal thread inspection machine, the second pusher plate is slidably connected to the table, and the second pusher cylinder is located at the bottom of the table.

[0013] Furthermore, in the aforementioned automatic internal thread testing machine, guide grooves are provided on both sides of the table, and the two sides of the second pusher plate are respectively inserted into the corresponding guide grooves.

[0014] Furthermore, the internal thread automatic inspection machine further includes a feeding trough and a collection box.

[0015] Furthermore, the internal thread automatic inspection machine further includes a feed trough drive cylinder.

[0016] Beneficial effects: This utility model provides an automatic internal thread inspection machine, which has at least the following advantages compared with the prior art:

[0017] (1) High degree of automation and significantly improved detection efficiency: The automatic feeding device of vibratory feeder realizes orderly conveying of parts, replacing the tedious process of manual feeding one by one; the first pusher plate and the second pusher plate work together in the X / Y direction to form a continuous production line operation of "feeding, detection and unloading", which greatly shortens the detection cycle of a single part; the detection device can be equipped with one or more detection rods to simultaneously detect one or more threaded holes of the part, and the detection volume per unit time is several times higher than that of traditional manual operation, which is especially suitable for mass production scenarios.

[0018] (2) High detection accuracy and more reliable quality judgment: The detection rod is equipped with a torque sensor, which can monitor the torque value during the screwing process of the threaded hole in real time and automatically judge whether the threaded hole is qualified by the preset threshold, which greatly improves the detection accuracy and completely eliminates the subjective error of manual judgment based on experience. At the same time, the lifting cylinder drives the detection rod to move vertically. With the connection of the slide rail and the slider of the slide plate and the guide groove limit of the push plate, the stable mechanical structure ensures the alignment accuracy between the detection rod and the threaded hole, further reducing misjudgment caused by mechanical shaking.

[0019] (3) Modular design is flexible and adaptable, with strong scene compatibility: The equipment adopts a modular structure design, and the number of detection rods can be flexibly adjusted according to the number of threaded holes in the parts (e.g., one detection rod is configured for single-hole parts, and two or more for multi-hole parts). Components such as brackets and pushers can be quickly disassembled and assembled through standardized interfaces, easily adapting to the detection needs of parts of different specifications. Attached Figure Description

[0020] Figure 1 This is a top view of the automatic internal thread inspection machine provided by this utility model.

[0021] Figure 2 The three-dimensional automatic internal thread inspection machine provided by this utility model Figure 1 .

[0022] Figure 3 The three-dimensional automatic internal thread inspection machine provided by this utility model Figure 2 .

[0023] Figure 4 The three-dimensional automatic internal thread inspection machine provided by this utility model Figure 3 .

[0024] Figure 5 for Figure 2 A magnified view of part A in the middle.

[0025] Figure 6 for Figure 3 A magnified view of part B in the middle section.

[0026] Figure 7 for Figure 4 A magnified view of part C in the middle.

[0027] Figure 8 This is a perspective view of a part that can be applied to the automatic internal thread inspection machine provided by this utility model.

[0028] Explanation of reference numerals in the attached figures:

[0029] 1. Frame; 11. Workbench; 111. Tabletop; 112. Support leg; 101. Guide groove;

[0030] 2. Vibratory feeder; 21. Hopper of the vibratory feeder; 22. Discharge track of the vibratory feeder;

[0031] 30. Vertical support plate; 31. First pusher cylinder; 311. Piston rod of the first pusher cylinder; 32. First pusher plate; 33. Baffle plate;

[0032] 411. Piston rod of the second pusher cylinder; 42. Second pusher plate;

[0033] 5. Detection device; 50. Support; 51. Lifting cylinder; 52. Slide plate; 53. Drive motor; 54. Detection rod; 55. Torque sensor;

[0034] 6. Feed chute; 61. Feed chute drive cylinder; 611. Piston rod of the feed chute drive cylinder;

[0035] 7. Material collection box;

[0036] 9. Part; 90. Threaded hole on the part. Detailed Implementation

[0037] To make the objectives, technical solutions, and effects of this utility model clearer and more explicit, the present utility model is further described in detail below. It should be understood that the specific embodiments described herein are merely for explaining this utility model and are not intended to limit this utility model.

[0038] Please see Figures 1 to 8 This utility model provides an automatic internal thread inspection machine. The accompanying drawings are for illustrative purposes only and are not proportional to actual products. The drawings only depict structures relevant to the present utility model; some conventional structures are not specifically shown. The terms "first," "second," etc., used herein are merely different names for similar structures for ease of explanation and are not intended to limit this application. The term "multiple" herein refers to a quantity of two or more; since the exact number of structures referred to is not a point of invention, it is not specifically limited.

[0039] Part 9 shown in the figure is merely one embodiment to facilitate understanding of the technical solution of this utility model. Part 9 shown in the figure has two threaded holes 90 that need to be inspected; therefore, the inspection device is correspondingly shown with two inspection rods (and corresponding drive motors, lifting cylinders, etc.). In practical applications, setting only one inspection rod (and corresponding drive motors, lifting cylinders, etc.) is the most basic solution. Of course, more inspection rods can be set to inspect more threaded holes at once.

[0040] This utility model claims protection for an automatic internal thread inspection machine. Part 9 shown in the accompanying drawings is not intended to limit this application.

[0041] For ease of explanation, this utility model defines the X and Y directions (e.g., Figure 1 As shown in the figure, however, in practical applications, the coordinate system can be set according to the actual situation, and different settings of the coordinate system do not change the essence of the technical solution.

[0042] Please refer to the following first. Figure 1 , Figure 2 , Figure 3 , Figure 4 as well as Figure 7The automatic internal thread inspection machine includes a frame 1, a worktable 11 mounted on the frame, and an inspection device 5. The inspection device 5 includes a support 50 and at least one inspection rod 54. Each inspection rod is connected to the spindle of a drive motor 53. Each inspection rod 54 is equipped with a torque sensor 55, and each inspection rod has an external thread (not shown in the figure) at its bottom end. The automatic internal thread inspection machine also includes an automatic feeding device 2 and a pushing device. Please refer to [link / reference]. Figure 5 The pushing device includes a first pushing plate 32, a first pushing cylinder 31, a second pushing plate 42, and a second pushing cylinder (not visible in the attached drawing); the first pushing cylinder is used to drive the first pushing plate to reciprocate along the X direction; the second pushing cylinder is used to drive the second pushing plate to reciprocate along the Y direction.

[0043] Please see Figure 7 In practical applications, to achieve automatic lifting and lowering of the detection rod, the following configuration can be implemented: each drive motor 53 is mounted on a sliding plate 52, and each sliding plate is slidably connected to the support; a lifting cylinder 51 is mounted on the support corresponding to each sliding plate, and each lifting cylinder drives the corresponding sliding plate to reciprocate vertically. The sliding plates and the support can be slidably connected via a slide rail and slider. When the piston rod of the lifting cylinder extends downward, it drives the corresponding sliding plate, motor, and detection rod to move downward; when the piston rod retracts upward, it drives the corresponding sliding plate, motor, and detection rod to move upward.

[0044] Preferably, the automatic feeding device 2 is a vibratory feeder feeding device. The parts to be tested are poured into the hopper 21 of the vibratory feeder feeding device, and the vibration allows the parts to be sent out one by one from the discharge track 22 of the vibratory feeder feeding device.

[0045] Please see Figure 5 Furthermore, a vertical support plate 30 is provided on the frame, and a first pushing cylinder 31 is provided on the side of the vertical support plate; a first pushing plate 32 is slidably provided on the top of the vertical support plate (preferably connected by a slide rail slider). The piston rod 311 of the first pushing cylinder is connected to the first pushing plate. As can be seen from the attached figure, the first pushing plate corresponds to the end of the discharge track of the vibratory feeder, so each time the first pushing plate moves forward, it pushes the part at the outlet of the discharge track forward in the X direction; when the first pushing plate retracts, another part is sent out from the end of the discharge track and is located in front of the first pushing plate. This cycle repeats, realizing the pushing of parts out of the discharge track one by one forward. As can be seen from the attached figure, a baffle 33 is provided on the support plate at the end corresponding to the discharge track, which acts as a barrier for parts coming out of the discharge track, preventing parts from falling off the support plate.

[0046] Furthermore, the workbench 11 includes a table 111 and multiple support legs 112 disposed at the bottom of the table. The inspection station is disposed on the table (located below the inspection rod).

[0047] Please see Figure 6 Furthermore, the second pusher plate 42 is slidably connected to the platform 111, and the second pusher cylinder is located at the bottom of the platform. The piston rod of the second pusher cylinder is connected to the second pusher plate. When the piston rod 411 of the second pusher cylinder retracts, it drives the second pusher plate to move forward along the Y direction, pushing the part forward to the inspection station; when the piston rod of the second pusher cylinder extends, it drives the second pusher plate to retract, at which point the first pusher plate pushes a part to the front of the second pusher plate. This process is repeated to push the parts one by one to the inspection station. Since the second pusher plate pushes one part forward to the inspection station each time, the part that has been inspected is pushed forward further, thus achieving automatic unloading of the inspected parts.

[0048] like Figure 6 As shown, guide grooves 101 are further provided on both sides of the platform, and the two sides of the second pusher plate are respectively inserted into the corresponding guide grooves. This arrangement simplifies the sliding connection structure between the second pusher plate and the platform, making it easy to assemble and avoiding the need for additional structures such as slide rails and sliders.

[0049] Furthermore, the automatic internal thread inspection machine also includes a feeding trough 6 and a collection box 7. During actual operation, due to the continuous pushing of the second pusher plate, the inspected parts move forward one by one and fall into the feeding trough in sequence. The feeding trough is inclined, and the parts slide downward in the feeding trough and eventually enter the collection box.

[0050] Furthermore, the automatic internal thread inspection machine also includes a feed chute drive cylinder 61. The piston rod 611 of the feed chute drive cylinder is connected to the feed chute. During normal operation, the piston rod of the feed chute drive cylinder extends, causing the feed chute to align with the discharge end of the platform (e.g., ...). Figure 1 As shown), the inspected parts can smoothly enter the unloading chute. When a defective part is detected, the piston rod of the unloading chute drive cylinder retracts, and the unloading chute moves away from the discharge end of the platform (as shown). Figure 4 (As shown). This is to prevent defective parts from falling into the collection box. In practical applications, defective parts can be removed manually.

[0051] To facilitate understanding, the working principle is further described below.

[0052] (1) Vibratory feeder feeding. The parts 9 to be tested are poured into the hopper 21 of the vibratory feeder feeding device 2. Through the vibration of the vibratory feeder, the parts are arranged in an orderly manner along the discharge track 22 and transported one by one to the end of the track.

[0053] (2) The first pusher plate pushes the part. A first pusher cylinder 31 is provided on the side of the vertical support plate 30 on the frame, and its piston rod 311 is connected to the first pusher plate 32. When the part reaches the end of the discharge track, the first pusher cylinder drives the first pusher plate to move forward in the X direction, pushing the part out of the end of the track and making it slide along the top of the vertical support plate to the front of the second pusher plate 42. At the same time, the baffle 33 is set to block the part and prevent it from falling off the support plate. After the first pusher plate retracts, the next part is automatically replenished to the end of the track, waiting for the next push.

[0054] (3) The second pusher plate transfers the parts. The second pusher plate 42 is slidably connected to the table 111 through the guide grooves 101 on both sides. The second pusher cylinder at the bottom drives it to reciprocate along the Y direction. When the piston rod of the second pusher cylinder retracts, the second pusher plate pushes the parts forward and transfers them to the inspection station on the worktable (located below the inspection rod 54). After the inspection is completed, the second pusher plate moves forward again, pushing the inspected parts out of the inspection station and pushing the next part to be inspected into the inspection station, thus realizing continuous feeding.

[0055] (4) Part inspection. The support 50 of the inspection device 5 is equipped with a lifting cylinder 51, which drives the slide plate 52 to move in the vertical direction, and the drive motor 53 and the inspection rod 54 on the slide plate rise and fall accordingly.

[0056] Descending detection: The piston rod of the lifting cylinder extends, causing the external thread at the bottom of the detection rod to align with the threaded hole 90 of part 9. The drive motor starts, and the detection rod rotates and screws into the threaded hole.

[0057] Torque detection: The torque sensor 55 on the detection rod monitors the torque value in real time during the screwing process to determine whether the threaded hole meets the accuracy requirements (if the torque is too large or too small, it is judged as unqualified).

[0058] Reset upon lifting: After the test is completed, the drive motor reverses and withdraws the test rod, the piston rod of the lifting cylinder retracts, and the test rod resets to its initial position. This reset ensures that the tested part will not interfere with the test rod when it is pushed out.

[0059] (5) Parts unloading. The qualified parts are continuously pushed forward by the second pusher plate, slide along the platform to the discharge end, fall into the inclined unloading trough 6, and finally slide into the collection box 7 to complete the collection.

[0060] If a defective part is detected, the piston rod 611 of the discharge chute drive cylinder 61 retracts, moving the discharge chute away from the discharge end of the platform, preventing the defective part from entering the collection box. Simultaneously, defective parts can be manually removed individually to prevent the mixing of qualified products.

[0061] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. It is understood that those skilled in the art can make equivalent substitutions or modifications based on the technical solution and inventive concept of the present utility model, and all such modifications or substitutions should fall within the protection scope of the present utility model.

Claims

1. An automatic internal thread inspection machine, comprising a frame, a worktable mounted on the frame, and an inspection device, characterized in that: The detection device includes a bracket and at least one detection rod. Each detection rod is connected to the spindle of a drive motor. Each detection rod is equipped with a torque sensor, and each detection rod has an external thread at its bottom end. The automatic internal thread detection machine also includes an automatic feeding device and a pushing device. The pushing device includes a first pushing plate, a first pushing cylinder, a second pushing plate, and a second pushing cylinder. The first pushing cylinder drives the first pushing plate to reciprocate along the X direction. The second pushing cylinder drives the second pushing plate to reciprocate along the Y direction.

2. The automatic internal thread inspection machine according to claim 1, characterized in that: Each drive motor is mounted on a slide plate, and each slide plate is slidably connected to the support frame. Each slide plate is equipped with a lifting cylinder on the support frame, and each lifting cylinder is used to drive the corresponding slide plate to reciprocate in the vertical direction.

3. The automatic internal thread inspection machine according to claim 1, characterized in that: The automatic feeding device is a vibratory feeder feeding device.

4. The automatic internal thread inspection machine according to claim 1, characterized in that: A vertical support plate is provided on the frame, and the first pusher cylinder is located on the side of the vertical support plate; the first pusher plate is slidably located on the top of the vertical support plate.

5. The automatic internal thread inspection machine according to claim 1, characterized in that: The workbench includes a tabletop and multiple support legs located at the bottom of the tabletop.

6. The automatic internal thread inspection machine according to claim 5, characterized in that: The second pusher plate is slidably connected to the table, and the second pusher cylinder is located at the bottom of the table.

7. The automatic internal thread inspection machine according to claim 6, characterized in that: Guide grooves are provided on both sides of the platform, and the two sides of the second pusher plate are inserted into the corresponding guide grooves.

8. The automatic internal thread inspection machine according to claim 1, characterized in that: The automatic internal thread inspection machine also includes a feeding trough and a collection box.

9. The automatic internal thread inspection machine according to claim 8, characterized in that: The automatic internal thread inspection machine also includes a feed trough drive cylinder.

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