CN-115753056-B - Be used for mouthful screw thread automatic checkout device

CN115753056BCN 115753056 BCN115753056 BCN 115753056BCN-115753056-B

Abstract

The invention belongs to the field of thread detection, and particularly relates to an automatic detection device for an oral thread. The mounting plate is connected with the mounting base through a plurality of groups of guide assemblies, the tightening head assembly and the tightening driving piece are respectively connected with the mounting plate, and the tightening head assembly is driven by the driving end of the tightening driving piece. The self-adaptive tightening head assembly can effectively adapt to the condition that threaded holes and axial directions are different, so that a thread detection part is smoothly screwed into threads of a product port, in addition, the detection assembly is arranged to detect the depth of the thread detection part screwed into the end face of the threads of the product port, and whether the threads of the port are qualified or not is judged through two parameters of torque and distance. The invention has the advantages of automatic centering and aligning, thereby being capable of better completing the automatic detection of the thread, having higher detection efficiency and more accurate and stable detection effect.

Inventors

HE TAO
XU ZHIGANG
LI FENG
QIU XU
LIU LIANZHU
GAO SIYUAN

Assignees

中国科学院沈阳自动化研究所

Dates

Publication Date: 20260505
Application Date: 20221117

Claims (5)

1. The automatic detection device for the mouth threads is characterized by comprising a mounting base (1), a sliding table (2), a mounting base (3), a mounting plate (4), a tightening driving piece (12), a tightening head assembly, a detection assembly and a guide assembly; The sliding table (2) is slidably connected to the mounting base (1) and driven by a sliding table driving piece (5), the mounting base (3) is mounted on the sliding table (2), the mounting plate (4) is connected with the mounting base (3) through a plurality of groups of guide components, the detection components are respectively connected with the mounting plate (4) and the mounting base (3), the tightening head component and the tightening driving piece (12) are respectively connected with the mounting plate (4), and the tightening head component is driven by the driving end of the tightening driving piece (12); The tightening head assembly comprises a tightening shaft bearing seat (601), a tightening shaft (602), a centering connecting shaft (603), a thread detection piece (604), a reset spring A (605), an outer positioning shaft sleeve (606) and a centering gland (607); The tightening shaft bearing seat (601) is mounted on the mounting plate (4), the tightening shaft (602) is rotationally connected with the tightening shaft bearing seat (601), one end of the tightening shaft (602) is connected with the driving end of the tightening driving piece (12), the other end of the tightening shaft (602) penetrates into the inner side of the outer positioning shaft sleeve (606) and is connected with one end of the return shaft (603), a return stop edge is extended to the periphery of the other end of the return shaft (603), the return spring A (605) is arranged between the return stop edge and the inner side surface of the outer positioning shaft sleeve (606), the return spring A (605) is sleeved on the outer side of one end of the return shaft (603) and the other end of the tightening shaft (602), one end of the outer positioning shaft sleeve (606) is sleeved on the tightening shaft (607), the other end of the outer positioning shaft sleeve (606) is connected with the return stop edge, and the return stop edge is sleeved on the return stop edge of the return shaft sleeve (603), and the return stop edge is matched with the return stop edge of the return stop edge; The hole diameter of the conical pore canal section of the centering baffle edge limiting hole is gradually increased from one side close to the thread detecting piece (604) to one side far away from the thread detecting piece (604), the cylindrical pore canal section of the centering baffle edge limiting hole is connected with an opening of one side of the conical pore canal section far away from the thread detecting piece (604), and the hole diameter of the cylindrical pore canal section of the centering baffle edge limiting hole is the same as the opening of one side of the conical pore canal section far away from the thread detecting piece (604) and the hole diameter; A long hole is formed in the other end of the tightening shaft (602) along the length direction of the tightening shaft (602), one end of a universal coupling (608) is sleeved on the other end of the tightening shaft (602), one end of the universal coupling (608) is connected with a connecting pin (609) penetrating through the long hole at the same time, the other end of the universal coupling (608) is connected with one end of the centering connecting shaft (603), and a return spring A (605) is sleeved on the outer side of the universal coupling (608); a plurality of adjusting screws (610) are uniformly arranged on the outer positioning shaft sleeve (606) at the outer side of the tightening shaft (602) along the circumferential direction, and a centering spring (611) is connected between one end of each adjusting screw (610) close to a centering blocking edge of the centering connecting shaft (603) and the centering blocking edge; A guide post a (612) is convexly arranged at one end of each adjusting screw (610) close to the centering baffle edge of the centering connecting shaft (603), a guide post B (613) is convexly arranged at the position, corresponding to each guide post a (612), of the centering baffle edge, and a corresponding group of guide posts a (612) and guide posts B (613) respectively penetrate into the same centering spring (611); the detection assembly is used for detecting the depth of the screw thread detection piece (604) screwed into the threaded end face of the product port, and further judging whether the threaded end face of the product port is qualified or not through two parameters of torque and distance.
2. The automatic detecting device for the thread of a mouth according to claim 1, wherein each group of the guide assemblies comprises a guide rod (701) and a linear bearing (702), the linear bearings (702) of each group of the guide assemblies are respectively arranged on the mounting base (3), one end of each group of the guide rods (701) of each group of the guide assemblies is connected with the mounting plate (4), the other end of each group of the guide rods respectively passes through the linear bearings (702) of the guide assemblies of the same group, and a return spring B (703) is respectively sleeved on each guide rod (701) between the mounting base (3) and the mounting plate (4).
3. The automatic detection device for the thread of a mouth, as set forth in claim 1, wherein the detection component comprises a magnetic ring installation guide post (801), a sensor installation cylinder (802), a sensor body (803) used in cooperation and a magnetic ring, one end of the sensor installation cylinder (802) is installed on the installation base (3), the other end of the sensor installation cylinder is connected with the sensor body (803), the detection end of the sensor body (803) stretches into the sensor installation cylinder (802), the magnetic ring is sleeved on the detection end of the sensor body (803), one end of the magnetic ring installation guide post (801) is connected with the installation plate (4), the other end of the magnetic ring installation guide post penetrates into the sensor installation cylinder (802), and the magnetic ring is connected with the other end of the magnetic ring installation guide post (801).
4. The automatic detecting device for thread of mouth according to claim 3, wherein a return spring C (804) is sleeved outside the detecting end of the sensor body (803), one end of the return spring C (804) is abutted against the other end of the magnetic ring mounting guide post (801), and the other end is abutted against the inner side surface of the sensor mounting cylinder (802).
5. The automatic mouth thread detection device according to claim 1, wherein the installation base (1) is provided with a screw rod (901), the sliding table (2) is provided with a nut (902) in threaded connection with the screw rod (901), and the screw rod (901) is driven to rotate by the driving end of the sliding table driving piece (5).

Description

Be used for mouthful screw thread automatic checkout device Technical Field The invention belongs to the field of thread detection, and particularly relates to an automatic detection device for an oral thread. Background The processing quality of the thread is an important part for determining the reliability of threaded connection, and in some industries with high requirements on the processing precision of products, such as the military industry, each product is required to be detected for the thread of a product port. Most of the threads of the product opening are manually detected in the current situation, so that the efficiency is low, the detection condition is judged manually, and certain misjudgment is achieved. Disclosure of Invention In view of the above problems, an object of the present invention is to provide an automatic detecting device for an oral thread. The aim of the invention is realized by the following technical scheme: an automatic detection device for a mouth thread comprises a mounting base, a sliding table, a mounting base, a mounting plate, a tightening driving piece, a tightening head assembly, a detection assembly and a guide assembly; The sliding table sliding connection in on the mounting base and by the slip table driving piece drive, the installation base install in on the slip table, the mounting panel with be connected through a plurality of guide assembly of group between the installation base, detection subassembly respectively with the mounting panel reaches the installation base is connected, screw up first subassembly and screw up the driving piece respectively with the mounting panel is connected, screw up first subassembly by screw up the drive end drive of driving piece. The tightening head assembly comprises a tightening shaft bearing seat, a tightening shaft, a centering connecting shaft, a thread detection piece, a reset spring A, an outer side positioning shaft sleeve and a centering gland; The screw-down shaft bearing seat is installed on the mounting plate, the screw-down shaft is rotationally connected with the screw-down shaft bearing seat, one end of the screw-down shaft is connected with the driving end of the screw-down driving piece, the other end of the screw-down shaft penetrates into the inner side of the outer positioning shaft sleeve and is connected with one end of the return connecting shaft, the return stop edge extends to the periphery of the other end of the return connecting shaft, a return spring A is arranged between the return stop edge and the inner side surface of the outer positioning shaft sleeve, the return spring A is sleeved on one end of the return connecting shaft and the outer side of the other end of the screw-down shaft, the screw-thread detecting piece is connected with the other end of the return connecting shaft, one end of the outer positioning shaft sleeve is sleeved on the screw-down shaft, the other end of the screw-down shaft sleeve is connected with the return gland, and a return stop edge limiting hole matched with the return stop edge is formed in the return gland, and the inner wall of the return stop edge limiting hole is abutted to the peripheral wall of the return stop edge. The centering baffle edge limiting hole is divided into a conical hole path section and a cylindrical hole path section, the aperture of the conical hole path section of the centering baffle edge limiting hole gradually increases from one side close to the thread detecting part to one side far away from the thread detecting part, the cylindrical hole path section of the centering baffle edge limiting hole is connected with an opening of one side of the conical hole path section far away from the thread detecting part, the aperture size of the cylindrical hole path section of the centering baffle edge limiting hole is the same as the aperture size of the opening of one side of the conical hole path section far away from the thread detecting part, and the shape of the peripheral wall of the centering baffle edge is matched with the shape of the inner wall of the centering baffle edge limiting hole. The screw-down device is characterized in that a long hole is formed in the other end of the screw-down shaft along the length direction of the screw-down shaft, one end of a universal coupling is sleeved on the other end of the screw-down shaft, one end of the universal coupling is connected with a connecting pin which simultaneously penetrates through the long hole, the other end of the universal coupling is connected with one end of the return connecting shaft, and a return spring A is sleeved on the outer side of the universal coupling. And a plurality of adjusting screws are uniformly arranged on the outer positioning shaft sleeve at the outer side of the tightening shaft along the circumferential direction, and centering springs are connected between one end of each adjusting screw, which is close to the centering blocking edge of the centering