A fully automatic internal thread inspection device

Abstract

This utility model discloses a fully automatic internal thread inspection device, including a worktable with a turntable rotatably connected to it. Several positioning fixtures are evenly arranged on the turntable. The worktable is equipped with a feeding mechanism, four internal thread diameter inspection mechanisms, a discharging mechanism, and a defective product discharge ramp. A first robotic arm and a second robotic arm are also provided on the worktable. The first robotic arm is located directly above the feeding mechanism, and the second robotic arm is located between the discharging mechanism and the defective product discharge ramp. This utility model integrates the four inspections of internal thread pitch diameter and minor diameter (go / no-go) into one device for simultaneous completion through a turntable-type multi-station flow layout. It achieves single-feed, multi-station parallel inspection, improving inspection efficiency compared to traditional manual step-by-step inspection methods and effectively meeting the full inspection needs of large-scale production lines.

Description

Technical Field

[0001] This utility model relates to the field of testing equipment technology, specifically a fully automatic internal thread inspection device. Background Technology

[0002] Currently, quality control requirements for functional internal threads (such as automotive parts) are becoming increasingly stringent. They typically require full inspection before use to prevent functional failures due to thread defects. In existing technologies, the pitch diameter and minor diameter inspection of internal threads are mostly performed manually or semi-automatically, which has the following drawbacks: 1. Low inspection efficiency: Manual operation is slow and cannot meet the needs of mass production; 2. Unstable inspection results: The torque applied manually is uncontrollable, easily leading to misjudgments; 3. Dispersed processes: Pitch diameter and minor diameter inspections need to be performed step-by-step, further reducing efficiency.

[0003] Therefore, there is an urgent need for a high-efficiency, high-precision, and fully automated internal thread inspection equipment. Utility Model Content

[0004] The purpose of this invention is to provide a fully automatic internal thread inspection device, which solves the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a fully automatic internal thread inspection device, including a worktable, a turntable rotatably connected to the worktable, a plurality of positioning fixtures evenly arranged on the turntable, a feeding mechanism, four internal thread diameter detection mechanisms, a discharging mechanism and a defective product discharge ramp on the worktable, and a first robotic arm and a second robotic arm on the worktable, wherein the first robotic arm is located directly above the feeding mechanism and the second robotic arm is located between the discharging mechanism and the defective product discharge ramp.

[0006] Preferably, both the first and second robotic arms include a dual-axis transmission module and a finger cylinder disposed on the dual-axis transmission module.

[0007] Preferably, the internal thread diameter detection mechanism includes a positioning cylinder and a lifting module. The movable end of the positioning cylinder is provided with a top block, which moves closer to or away from the corresponding positioning fixture. The lifting module is provided with a pneumatic rotary head, and a detection rod is detachably installed on the pneumatic rotary head. The internal thread diameter detection mechanism is connected to a pressure sensor.

[0008] Preferably, the internal thread diameter detection mechanism includes two internal thread pitch diameter detection mechanisms and two internal thread minor diameter detection mechanisms.

[0009] Preferably, the detection bar on the internal thread pitch diameter detection mechanism is a threaded bar, and the internal thread minor diameter detection mechanism is a smooth bar.

[0010] Preferably, both the feeding mechanism and the unloading mechanism include a linear drive module and a material tray disposed on the linear drive module. The linear drive module can drive the material tray to perform linear reciprocating transmission, and the material tray is provided with a plurality of placement slots arranged in an array.

[0011] Preferably, the positioning fixture has two positioning grooves, and the outer edge of the positioning grooves is hollowed out.

[0012] Preferably, the workbench is further provided with a rotating mechanism, which is linked to the turntable. The rotating mechanism includes a motor and a reducer that are linked together.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model integrates the four tests of the mean diameter go / no-go and minor diameter go / no-go of internal threads into one machine through a rotary multi-station flow layout, which can be completed simultaneously. It realizes single feeding and multi-station parallel testing. Compared with the traditional manual step-by-step testing method, the testing efficiency is improved, which can effectively meet the full inspection requirements of large-scale production lines. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a partial structural diagram of the present invention. Figure 1 ; Figure 3 This is a partial structural diagram of the present invention. Figure 2 ; Figure 4 This is a partial structural diagram of the present invention. Figure 3 ; Figure 5 This is a partial structural diagram of the present invention. Figure 4 . Detailed Implementation

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

[0016] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "horizontal," "vertical," "top," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0017] Please see Figures 1 to 5 This utility model provides an embodiment of a fully automatic internal thread inspection device, including a workbench 1 and a turntable 3 set in the center of the workbench 1. The turntable 3 is driven by a rotating mechanism 2 below it and can perform precise intermittent rotational motion. On the edge of the turntable 3, a plurality of positioning fixtures 10 are uniformly fixed in the circumferential direction. The number of fixtures can be designed according to the inspection cycle requirements. This embodiment has eight positioning fixtures 10. Each positioning fixture 10 is machined with a positioning groove 11 that matches the shape of the workpiece to be inspected. The side wall of the positioning groove 11 is designed as a hollow structure, which can cooperate with the top block 16 on the internal thread diameter detection mechanism. The top block 16 is close to the hollow side of the corresponding positioning fixture 10 and presses and fixes the workpiece to be inspected.

[0018] The workbench 1 is equipped with a feeding mechanism 4, four internal thread diameter detection mechanisms, a discharging mechanism 5, and a defective product unloading ramp 6 arranged sequentially around the turntable 3. The feeding mechanism 4 is equipped with a first robotic arm 7 above it, and the discharging mechanism 5 and the defective product unloading ramp 6 are equipped with a second robotic arm 8 between them.

[0019] Both the first robotic arm 7 and the second robotic arm 8 include a dual-axis transmission module 12 and a finger cylinder 13 mounted on the dual-axis transmission module 12. The dual-axis transmission module 12 can drive the finger cylinder 13 to perform dual-axis transmission, and the finger cylinder 13 can perform workpiece clamping and picking actions.

[0020] The internal thread diameter detection mechanism includes a positioning cylinder 14 and a lifting module 15. The movable end of the positioning cylinder 14 is provided with a top block 16, which moves closer to or further away from the corresponding positioning fixture 10. The lifting module 15 is provided with a pneumatic rotary head 17, and a detection rod 18 is detachably installed on the pneumatic rotary head 17. The internal thread diameter detection mechanism is connected to a pressure sensor (not shown in the figure). The pressure sensor is electrically connected to the lifting module 17. When the lifting module 17 cannot move to the lowest position, it sends an error signal to the pressure sensor and marks the workpiece with a defect signal.

[0021] The internal thread diameter detection mechanism includes two internal thread pitch diameter detection mechanisms 91 and two internal thread minor diameter detection mechanisms 92.

[0022] The detection bar 18 on the internal thread pitch diameter detection mechanism 91 is a threaded bar. The external thread of the threaded bar is adapted to the internal thread of the workpiece to be inspected. The pneumatic rotary head 17 drives the threaded bar to rotate and drive the thread of the workpiece to be inspected. The lifting module 15 can drive the detection bar 18 to the bottom. If the internal thread pitch diameter of the workpiece to be inspected is qualified, otherwise, the internal thread pitch diameter of the workpiece to be inspected is unqualified. The minor diameter detection mechanism 92 is a smooth-walled rod, which is a round rod with a smooth surface. The lifting module 15 can drive the detection rod 18 to the bottom, which means that the minor diameter detection of the internal thread of the workpiece to be inspected is qualified. Otherwise, the minor diameter detection of the internal thread of the workpiece to be inspected is unqualified.

[0023] Both the loading mechanism 4 and the unloading mechanism 5 include a linear transmission module 9 and a material tray 19 set on the linear transmission module 9. The linear transmission module 9 can drive the material tray 19 to perform linear reciprocating transmission. The material tray 19 is provided with several arrayed placement slots 20, which can hold workpieces.

[0024] The material tray 19 on the feeding mechanism 4 is loaded with workpieces to be inspected, and the first robotic arm 7 picks up a workpiece to be inspected from the material tray 19 on the feeding mechanism 4.

[0025] The first robotic arm 7 precisely places the workpiece onto the positioning fixture 10, which is currently in the loading station, on the turntable 3. The turntable 3 rotates one indexing angle; in this embodiment, the turntable 3 rotates 45° each time, bringing the workpiece into the first inspection station. In subsequent continuous indexing, the workpiece will pass through four internal thread diameter inspection mechanisms to complete all inspection items.

[0026] After all inspections are completed, the workpieces are transferred to the unloading station. The second robotic arm 8, based on the pass / fail instructions issued by the control system, picks up the workpieces and places them on the material tray of the unloading mechanism 13 or the defective product unloading ramp 6, respectively. The above actions are repeated to form a continuous automated inspection production line.

[0027] In this embodiment, the rotating mechanism 2 is linked to the turntable 3. The rotating mechanism 2 includes a motor (not shown) and a reducer (not shown) that are linked to each other.

[0028] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A fully automatic internal thread inspection device, comprising a worktable, characterized in that: A turntable is rotatably connected to the workbench, and several positioning fixtures are evenly arranged on the turntable. The workbench is equipped with a feeding mechanism, four internal thread diameter detection mechanisms, a unloading mechanism, and a defective product unloading ramp. The workbench is also equipped with a first robotic arm and a second robotic arm, wherein the first robotic arm is located directly above the feeding mechanism, and the second robotic arm is located between the unloading mechanism and the defective product unloading ramp.

2. The fully automatic internal thread inspection equipment according to claim 1, characterized in that: Both the first and second robotic arms include a dual-axis transmission module and finger cylinders mounted on the dual-axis transmission module.

3. The fully automatic internal thread inspection equipment according to claim 1, characterized in that: The internal thread diameter detection mechanism includes a positioning cylinder and a lifting module. The movable end of the positioning cylinder is provided with a top block, which moves closer to or away from the corresponding positioning fixture. The lifting module is provided with a pneumatic rotary head, and a detection rod is detachably installed on the pneumatic rotary head. The internal thread diameter detection mechanism is connected to a pressure sensor.

4. A fully automatic internal thread inspection device according to any one of claims 1 or 3, characterized in that: The internal thread diameter detection mechanism includes two internal thread pitch diameter detection mechanisms and two internal thread minor diameter detection mechanisms.

5. The fully automatic internal thread inspection equipment according to claim 4, characterized in that: The detection bar on the internal thread pitch diameter detection mechanism is a threaded bar, and the internal thread minor diameter detection mechanism is a smooth bar.

6. The fully automatic internal thread inspection equipment according to claim 1, characterized in that: Both the feeding mechanism and the unloading mechanism include a linear drive module and a material tray mounted on the linear drive module. The linear drive module can drive the material tray to perform linear reciprocating transmission. The material tray is provided with several arrayed placement slots.

7. The fully automatic internal thread inspection equipment according to claim 1, characterized in that: The positioning fixture has two positioning grooves, and the outer edge of the positioning grooves is hollowed out.

8. The fully automatic internal thread inspection equipment according to claim 1, characterized in that: The workbench is also equipped with a rotating mechanism, which is linked to the turntable. The rotating mechanism includes a motor and a reducer that are linked together.

Images