Automatic go / no-go gauge inspection machine and process for inspecting threaded holes

Abstract

The present invention discloses an automatic inspection machine and process for detecting a go / no-go gauge of a threaded hole, comprising a machine platform, on which a feeding mechanism, a conveying track, a swimming-type propulsion mechanism, a go / no-go gauge detection mechanism, a go / no-go gauge detection mechanism and a good-parts receiving box are arranged, wherein: the feeding mechanism is used to convey the workpiece to be inspected; the swimming-type propulsion mechanism is used to push the workpiece conveyed by the feeding mechanism into the conveying track, and to push the workpiece on the conveying track to the discharging direction one by one; the go / no-go gauge detection mechanism is used to perform a go / no-go gauge detection on the workpiece conveyed to the station below the go / no-go gauge detection mechanism; the go / no-go gauge detection mechanism is used to perform a go / no-go gauge detection on the workpiece conveyed to the station below the go / no-go gauge detection mechanism; and the good-parts receiving box is used to collect the workpiece conveyed by the conveying track. The present invention can realize automatic feeding, automatic conveying and automatic detection of threaded holes during conveying, thereby improving detection efficiency, having more automated performance and saving labor costs.

Description

Technical Field

[0001] The invention relates to threaded hole detection equipment, in particular to an automatic go / no-go gauge detection machine and process for detecting threaded holes. Background Art

[0002] The go and no-go gauge detection step is a process flow for detecting threaded holes, specifically, using a go gauge and a no-go gauge to detect the center threaded hole. When the go gauge is screwed into the screw hole, if it can pass through the screw hole smoothly, it means that the screw hole has passed the go gauge detection. When the no-go gauge is screwed into the screw hole, if the no-go gauge cannot pass through the screw hole, it means that the screw hole has passed the no-go gauge detection. However, the existing detection method is generally to perform manual detection with corresponding tools, which is not only inefficient, but also time-consuming, labor-intensive and costly. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide an automatic go / no-go gauge inspection machine and process that can realize automatic loading, automatic conveying and automatic detection of threaded holes during conveying, thereby improving detection efficiency, having more automated performance and saving labor costs, in view of the shortcomings of the prior art.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions.

[0005] An automatic go / no-go gauge inspection machine for inspecting threaded holes comprises a machine platform, on which are arranged a feeding mechanism, a conveying track, a swimming-type advancing mechanism, a no-go gauge inspection mechanism, a go / no-go gauge inspection mechanism and a good-part receiving box, wherein: the feeding mechanism is used to convey the workpiece to be inspected; the feeding end of the conveying track is arranged adjacent to the discharging end of the feeding mechanism; the swimming-type advancing mechanism is arranged parallel to the conveying track, and the swimming-type advancing mechanism is used to push the workpiece conveyed by the feeding mechanism into the conveying track, and to push the workpiece on the conveying track to each station one by one. Pushing in the discharging direction; the stop gauge detection mechanism is arranged adjacent to the conveying track, and the stop gauge detection mechanism is used to perform stop gauge detection on the workpiece conveyed to the workstation below the stop gauge detection mechanism; the through gauge detection mechanism is arranged adjacent to the conveying track, and the through gauge detection mechanism is located on the discharging side of the stop gauge detection mechanism, and the through gauge detection mechanism is used to perform through gauge detection on the workpiece conveyed to the workstation below the through gauge detection mechanism; the good part receiving box is located on the discharging side of the conveying track, and the good part receiving box is used to collect the workpiece conveyed out of the conveying track.

[0006] Preferably, the number of the feeding mechanism, conveying track, stop gauge detection mechanism and go gauge detection mechanism are two each, the feeding mechanism corresponds to the conveying track one-to-one, the two stop gauge detection mechanisms are arranged on both sides of the two conveying tracks, and the two go gauge detection mechanisms are arranged on both sides of the two conveying tracks.

[0007] Preferably, a laser sensor is fixed to the outer side of the conveying track, the detection end of the laser sensor faces the workpiece, and the laser sensor outputs an electrical signal when detecting the workpiece.

[0008] Preferably, a waste unloading mechanism is included, and the waste unloading mechanism includes a push-pull block, which is embedded in the conveying track, the top surface of the push-pull block is flush with the conveying surface of the conveying track, and the push-pull block is slidably connected to the conveying track, a waste opening is opened on the machine table at the bottom of the push-pull block, and a waste box corresponding to the waste opening is provided under the machine table, a push-pull cylinder is fixed on the machine table, and the output shaft of the push-pull cylinder is connected to the push-pull block, when the workpiece transported to the feeding side of the push-pull block is waste, the push-pull cylinder drives the push-pull block to move outward to expose the waste opening, and when the swimming propulsion mechanism pushes the workpiece again, the workpiece falls into the waste box through the waste opening.

[0009] Preferably, the sliding direction of the push-pull block is perpendicular to the length direction of the conveying track.

[0010] Preferably, an inclined waste guide trough is fixed to the bottom of the machine platform, and the waste box is located below the outlet of the waste guide trough.

[0011] Preferably, the waste parts unloading mechanism is provided on both the discharging side of the stop gauge detection mechanism and the discharging side of the through gauge detection mechanism.

[0012] Preferably, vertical through holes are provided on the workstation below the stop gauge detection mechanism and the workstation below the through gauge detection mechanism, and the vertical through holes penetrate the upper and lower sides of the conveying track. A vertically arranged positioning cylinder is fixed under the machine platform, and a positioning lifting block is fixed on the telescopic shaft of the positioning cylinder, and a positioning finger that can be engaged with the workpiece is formed on the top of the positioning lifting block. When the workpiece is transferred to the top of the vertical through hole, the positioning cylinder drives the positioning lifting block to rise so that the positioning finger engages with the workpiece, thereby positioning the workpiece at the workstation below the stop gauge detection mechanism and the workstation below the through gauge detection mechanism.

[0013] Preferably, a chassis is fixed on the machine platform, and the feeding mechanism, conveying track, swimming propulsion mechanism, stop gauge detection mechanism and through gauge detection mechanism are all arranged in the chassis.

[0014] A process for automatically detecting go and no-go gauges for detecting threaded holes, the process is implemented based on a detection machine, the detection machine includes a machine platform, a feeding mechanism, a conveying track, a swimming-type propulsion mechanism, a no-go gauge detection mechanism, a go gauge detection mechanism and a good-part receiving box are arranged on the machine platform, the feeding end of the conveying track is arranged adjacent to the discharging end of the feeding mechanism, the swimming-type propulsion mechanism is arranged parallel to the conveying track, the no-go gauge detection mechanism is arranged adjacent to the conveying track, the go gauge detection mechanism is arranged adjacent to the conveying track, and the go gauge detection mechanism is located on the discharging side of the no-go gauge detection mechanism, and the good-part receiving box is located on the conveying track. On the discharge side, the process includes: step S1, using the feeding mechanism to transport the workpiece to be inspected; step S2, the swimming propulsion mechanism pushes the workpiece transported by the feeding mechanism into the conveying track, and at the same time pushes the workpiece on the conveying track one by one to the discharge direction; step S3, the stop gauge detection mechanism performs a stop gauge detection on the workpiece transported to the station below the stop gauge detection mechanism; step S4, the through gauge detection mechanism performs a through gauge detection on the workpiece transported to the station below the through gauge detection mechanism; step S5, the workpiece transported by the conveying track falls into the good part receiving box, and then the workpiece is collected.

[0015] The automatic go / no-go gauge inspection machine for detecting threaded holes disclosed in the present invention, during operation, first utilizes the feeding mechanism to convey the workpiece to be inspected, and then the swimming propulsion mechanism pushes the workpiece conveyed by the feeding mechanism into the conveying track, and at the same time pushes the workpiece on the conveying track one by one in the direction of discharging, during the conveying process, the no-go gauge inspection mechanism performs a no-go gauge inspection on the workpiece conveyed to the station below the no-go gauge inspection mechanism, and at the same time, the go / no-go gauge inspection mechanism performs a go / no-go gauge inspection on the workpiece conveyed to the station below the go / no-go gauge inspection mechanism, and finally, the workpiece conveyed by the conveying track falls into the good part receiving box, and then the workpiece is collected. Compared with the prior art, the present invention can realize automatic feeding and automatic conveying, and can automatically detect threaded holes during conveying, which not only improves the detection efficiency, but also has more automation performance, greatly saves labor costs, and better meets application requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a three-dimensional diagram of the automatic go / no-go gauge testing machine;

[0017] Figure 2 This is the internal top view of the automatic go / no-go gauge testing machine;

[0018] Figure 3 The internal stereoscopic image of the automatic go / no-go gauge inspection machine Figure 1 ;

[0019] Figure 4The internal stereoscopic image of the automatic go / no-go gauge inspection machine Figure 2 ;

[0020] Figure 5 It is a partial structural diagram of the feeding mechanism and the conveying track;

[0021] Figure 6 This is a structural diagram of the swimming propulsion mechanism;

[0022] Figure 7 This is the structural diagram of the waste parts unloading mechanism;

[0023] Figure 8 Structural diagram of the workpiece positioning part;

[0024] Fig. 9 A three-dimensional diagram of the stop gauge detection mechanism;

[0025] Fig.10 It is a three-dimensional diagram of the through gauge detection mechanism. DETAILED DESCRIPTION

[0026] The present invention is described in more detail below with reference to the accompanying drawings and embodiments.

[0027] Embodiment 1

[0028] This embodiment proposes an automatic go / no-go gauge inspection machine for inspecting threaded holes, Figures 1 to 10 As shown, it comprises a machine platform 1, on which a feeding mechanism 2, a conveying track 3, a swimming-type advancing mechanism 4, a stop gauge detection mechanism 5, a through gauge detection mechanism 6 and a good-part receiving box 7 are provided, wherein:

[0029] The feeding mechanism 2 is used to convey the workpiece 100 to be inspected;

[0030] The feeding end of the conveying track 3 is arranged adjacent to the discharging end of the feeding mechanism 2;

[0031] The swimming propulsion mechanism 4 is arranged in parallel with the conveying track 3, and is used to push the workpiece 100 conveyed by the loading mechanism 2 into the conveying track 3, and to push the workpiece 100 on the conveying track 3 in the discharge direction one by one;

[0032] The stop gauge detection mechanism 5 is disposed adjacent to the conveying track 3, and the stop gauge detection mechanism 5 is used to perform a stop gauge detection on the workpiece 100 conveyed to the workstation below the stop gauge detection mechanism 5;

[0033] The through-gauge detection mechanism 6 is disposed adjacent to the conveying track 3 and is located at the discharge side of the stop-gauge detection mechanism 5. The through-gauge detection mechanism 6 is used to perform through-gauge detection on the workpiece 100 conveyed to the station below the through-gauge detection mechanism 6.

[0034] The good-part receiving box 7 is located at the discharge side of the conveying track 3 , and the good-part receiving box 7 is used to collect the workpieces 100 conveyed out of the conveying track 3 .

[0035] During operation, the above-mentioned automatic inspection machine for go and stop gauges first uses the feeding mechanism 2 to transport the workpiece 100 to be inspected, and then the swimming propulsion mechanism 4 pushes the workpiece 100 transported by the feeding mechanism 2 into the conveying track 3, and at the same time pushes the workpiece 100 on the conveying track 3 one by one in the direction of discharging. During the transportation process, the stop gauge detection mechanism 5 performs a stop gauge detection on the workpiece 100 transported to the station below the stop gauge detection mechanism 5, and at the same time, the go gauge detection mechanism 6 performs a go gauge detection on the workpiece 100 transported to the station below the go gauge detection mechanism 6. Finally, the workpiece 100 transported by the conveying track 3 falls into the good part receiving box 7, and then the workpiece 100 is collected. Compared with the prior art, the present invention can realize automatic feeding and automatic transportation, and can automatically detect threaded holes during transportation, which not only improves the detection efficiency, but also has more automation performance, greatly saves labor costs, and better meets application requirements.

[0036] In order to realize batch inspection, in this embodiment, the number of the feeding mechanism 2, the conveying track 3, the stop gauge detection mechanism 5 and the through gauge detection mechanism 6 are all two, the feeding mechanism 2 corresponds one to one to the conveying track 3, the two stop gauge detection mechanisms 5 are respectively arranged on both sides of the two conveying tracks 3, and the two through gauge detection mechanisms 6 are respectively arranged on both sides of the two conveying tracks 3.

[0037] In order to collect the status of the workpiece 100 and count the workpieces 100, in this embodiment, a laser sensor 30 is fixed to the outside of the conveying track 3, and the detection end of the laser sensor 30 faces the workpiece 100. When the laser sensor 30 detects the workpiece 100, it outputs an electrical signal.

[0038] During the inspection process, once the threaded hole of the workpiece 100 does not meet the requirements, it is necessary to remove the waste workpiece in time. To this end, the present embodiment includes a waste material unloading mechanism 33, and the waste material unloading mechanism 33 includes a push-pull block 31, and the push-pull block 31 is embedded in the conveying track 3. The top surface of the push-pull block 31 is flush with the conveying surface of the conveying track 3, and the push-pull block 31 is slidably connected to the conveying track 3. A waste opening 10 is opened on the machine 1 at the bottom of the push-pull block 31, and the machine 1 A waste box 11 corresponding to the waste port 10 is provided below the machine 1, and a push-pull cylinder 32 is fixed on the machine table 1, and the output shaft of the push-pull cylinder 32 is connected to the push-pull block 31. When the workpiece 100 transported to the feeding side of the push-pull block 31 is waste, the push-pull cylinder 32 drives the push-pull block 31 to move outward to expose the waste port 10, and when the swimming propulsion mechanism 4 pushes the workpiece 100 again, the workpiece 100 falls into the waste box 11 through the waste port 10.

[0039] Furthermore, the sliding direction of the push-pull block 31 is perpendicular to the length direction of the conveying track 3 .

[0040] In order to guide the waste workpieces, in this embodiment, an inclined waste guide groove 12 is fixed to the bottom of the machine table 1 , and the waste box 11 is located below the outlet of the waste guide groove 12 .

[0041] In this embodiment, the waste part unloading mechanism 33 is provided on both the discharging side of the stop gauge detection mechanism 5 and the discharging side of the through gauge detection mechanism 6 .

[0042] During the detection process, since the go gauge and the stop gauge need to be screwed into the threaded hole, a certain torque will be applied to the workpiece 100. In order to avoid angular displacement of the workpiece 100, the present embodiment adds a workpiece positioning mechanism, specifically: a vertical through hole 34 is opened on the station below the stop gauge detection mechanism 5 and the station below the go gauge detection mechanism 6, and the vertical through hole 34 runs through the upper and lower sides of the conveying track 3, and a vertically arranged positioning cylinder 35 is fixed below the machine table 1. A positioning lifting block 36 is fixed on the telescopic shaft of the cylinder 35, and a positioning finger 360 that can engage with the workpiece 100 is formed on the top of the positioning lifting block 36. When the workpiece 100 is transferred to the top of the vertical through hole 34, the positioning cylinder 35 drives the positioning lifting block 36 to rise so that the positioning finger 360 engages with the workpiece 100, thereby positioning the workpiece 100 at the workstation below the stop gauge detection mechanism 5 and at the workstation below the through gauge detection mechanism 6.

[0043] In order to improve the dustproof ability of the equipment, in this embodiment, a chassis 13 is fixed on the machine platform 1, and the feeding mechanism 2, the conveying track 3, the swimming propulsion mechanism 4, the stop gauge detection mechanism 5 and the through gauge detection mechanism 6 are all arranged in the chassis 13.

[0044] In order to better describe the technical solution of the present invention, this embodiment also relates to an automatic detection process for a go / no-go gauge for detecting a threaded hole, Figures 1 to 10 As shown, the process is implemented based on a detection machine, which includes a machine table 1, on which a feeding mechanism 2, a conveying track 3, a swimming-type propulsion mechanism 4, a stop gauge detection mechanism 5, a through gauge detection mechanism 6 and a good-part receiving box 7 are provided. The feeding end of the conveying track 3 is arranged adjacent to the discharging end of the feeding mechanism 2, the swimming-type propulsion mechanism 4 is arranged parallel to the conveying track 3, the stop gauge detection mechanism 5 is arranged adjacent to the conveying track 3, the through gauge detection mechanism 6 is arranged adjacent to the conveying track 3, and the through gauge detection mechanism 6 is located at the discharging side of the stop gauge detection mechanism 5, and the good-part receiving box 7 is located at the discharging side of the conveying track 3. The process includes:

[0045] Step S1, using the feeding mechanism 2 to convey the workpiece 100 to be inspected;

[0046] Step S2, the swimming propulsion mechanism 4 pushes the workpiece 100 conveyed by the loading mechanism 2 into the conveying track 3, and at the same time pushes the workpiece 100 on the conveying track 3 toward the discharge direction one by one;

[0047] Step S3, the stop gauge detection mechanism 5 performs a stop gauge detection on the workpiece 100 transported to the station below the stop gauge detection mechanism 5;

[0048] Step S4, the through-gauge detection mechanism 6 performs a through-gauge detection on the workpiece 100 transported to the workstation below the through-gauge detection mechanism 6;

[0049] In step S5 , the workpieces 100 conveyed by the conveying track 3 fall into the good-part receiving box 7 , and the workpieces 100 are then collected.

[0050] Embodiment 2

[0051] In actual applications, some processing and testing situations usually involve the process of separate processing or separate testing of workpieces. In order to cooperate with automated processing or testing, it is necessary to use a propulsion mechanism and a conveying track to cooperate to complete the transportation of the workpieces. The common propulsion method is to push multiple workpieces against each other in turn, apply thrust through the propulsion mechanism at the end of the workpiece, and then drive multiple workpieces forward. This conveying method generally has the following problems: First, if one force point is used to apply force to multiple workpieces at the same time, the thrust of the force point is large, and the workpiece is easy to collapse or cause large friction; in addition, this batch propulsion method makes it difficult to ensure that each workpiece is accurately in place, resulting in a significant reduction in processing and testing accuracy, and it is difficult to meet production requirements.

[0052] In this regard, this embodiment proposes a swimming propulsion mechanism for conveying workpieces, which can apply thrust to each workpiece individually, ensure that the workpieces are conveyed one by one, thereby improving the accuracy of the workpieces in place and the accuracy of processing detection, and combines Figure 4 , Figure 5 and Figure 6 As shown, the swimming propulsion mechanism 4 is installed on a preset machine platform 1, and the machine platform 1 is provided with a conveying track 3, and the conveying track 3 is used to carry multiple workpieces 100. The swimming propulsion mechanism 4 includes a fixed bracket 40 fixed below the machine platform 1, and the fixed bracket 40 is provided with a transverse slide rail 41, and the transverse slide rail 41 is provided with a transverse moving platform 42 and the two are slidably connected, and the transverse translation platform 42 is fixed with a longitudinal slide rail 43, and the longitudinal slide rail 43 is provided with a longitudinal moving platform 44 and the two are slidably connected, and a transverse moving cylinder 45 is fixed on the fixed bracket 40, and the output shaft of the transverse moving cylinder 45 is connected to the transverse translation platform 42, and the transverse translation platform 42 is fixed with a longitudinal moving cylinder 46. The output shaft of the pneumatic cylinder 46 is connected to the longitudinal movable platform 44. A transversely arranged transverse translation arm 47 is fixed to the top of the longitudinal movable platform 44. The transverse translation arm 47 passes through the machine platform 1 and extends upward. A plurality of mutually parallel shifting blocks 48 are fixed on the transverse translation arm 47. The plurality of shifting blocks 48 are evenly distributed on the transverse translation arm 47, and the shifting blocks 48 and the transverse translation arm 47 are perpendicular to each other. The transverse translation arm 47 is driven up and down by the longitudinal movable cylinder 46 to make the shifting blocks 48 move in and out from between two adjacent workpieces 100. The transverse translation arm 47 is driven to move transversely by the transverse movable cylinder 45 to make the shifting blocks 48 push the workpiece 100 in the discharge direction at each station.

[0053] During the execution of the above-mentioned mechanism, the longitudinal moving cylinder 46 first drives the transverse translation arm 47 to move downward until the shift block 48 enters between two adjacent workpieces 100, and then the transverse moving cylinder 45 drives the transverse translation arm 47 to move forward, and the multiple shift blocks 48 on the transverse translation arm 47 push the multiple workpieces 100 forward one workstation at the same time, and then the longitudinal moving cylinder 46 drives the transverse translation arm 47 to move upward, and the transverse moving cylinder 45 drives the transverse translation arm 47 to move backward, waiting for the next pushing action to be executed. Based on the above principle, it can be seen that the present invention adopts a swimming action process. Under the action of the lateral translation support arm 47 and the multiple shifting blocks 48, thrust can be applied to each workpiece 100 individually, so that the workpiece 100 is transported forward one workstation at a time. Compared with the prior art, the present invention can not only ensure that the conveying process of the workpiece 100 is smoother, but also ensure that the workpiece 100 reaches the corresponding workstation more accurately, which helps to improve the workpiece processing accuracy or detection accuracy and better meet the production requirements.

[0054] In order to meet the requirements of batch conveying, in this embodiment, two parallel conveying tracks 3 are provided on the machine 1, the transverse translation arm 47 is located between the two conveying tracks 3, and the middle part of the shift block 48 is fixedly connected to the transverse translation arm 47 so that the shift block 48 extends to both sides of the transverse translation arm 47, and the workpieces 100 on the two conveying tracks 3 are simultaneously shifted by the shift block 48.

[0055] In order to limit the sliding stroke of the lateral translation platform 42, in this embodiment, a lateral limiting bracket 49 is fixed to the end of the fixed bracket 40 away from the lateral movement cylinder 45, and a lateral limiting ejector pin 490 is provided on the lateral limiting bracket 49, and the lateral limiting ejector pin 490 is aligned with the lateral translation platform 42.

[0056] In order to facilitate adjustment of the position of the transverse limiting ejector pin 490 , in this embodiment, the transverse limiting ejector pin 490 is threadedly matched with the transverse limiting bracket 49 .

[0057] In order to better cooperate with the lateral translation support arm 47 of the swimming motion and to avoid the shift block 48, the present embodiment has made special arrangements in the loading part, specifically: the machine table 1 is provided with a loading mechanism 2 for conveying the workpiece 100 to be inspected, the feeding end of the conveying track 3 is arranged opposite to the discharging end of the loading mechanism 2, and the vertical height of the feeding end of the conveying track 3 is greater than the vertical height of the discharging end of the loading mechanism 2, a loading lifting cylinder 20 is fixed below the machine table 1, and a loading lifting block 21 is fixed on the output shaft of the loading lifting cylinder 20, and the loading lifting block 21 is located on the conveying track 3. between the feeding end of the feeding mechanism 2 and the discharging end of the feeding mechanism 2, when the feeding lifting cylinder 20 drives the feeding lifting block 21 to descend, the feeding lifting block 21 is flush with the discharging end of the feeding mechanism 2, and the workpiece 100 transported by the feeding mechanism 2 is translated onto the feeding lifting block 21, and when the feeding lifting cylinder 20 drives the feeding lifting block 21 to rise, the feeding lifting block 21 is flush with the feeding end of the conveying track 3, and when the lateral moving cylinder 45 drives the lateral translation support arm 47 to move lateral, the shifting block 48 pushes the workpiece 100 on the feeding lifting block 21 into the conveying track 3.

[0058] In the above structure, under the action of the loading lifting cylinder 20, the loading lifting block 21 can be driven to rise or fall, that is: when descending, it takes material from the loading mechanism 2, and when rising, it waits for the shift block 48 to push the workpiece into the conveying track 3. Based on the above principle, the end of the loading mechanism 2 can be avoided from conflicting with the activity space of the shift block 48, so that the matching ability and linkage performance of the equipment are further improved.

[0059] As a preferred embodiment, the loading lifting block 21 is an inverted "L" block.

[0060] In order to achieve stable translation, in this embodiment, two transverse slide rails 41 are fixed on the fixed bracket 40 , the two transverse slide rails 41 are parallel to each other, and the transverse movable platform 42 is straddled on the two transverse slide rails 41 .

[0061] Correspondingly, two longitudinal slide rails 43 are fixed on the transverse movable platform 42 , the two longitudinal slide rails 43 are parallel to each other, and the longitudinal movable platform 44 is straddled on the two longitudinal slide rails 43 .

[0062] Embodiment 3

[0063] In the existing threaded hole inspection process, the detection is generally carried out using the no-go gauge head and the go gauge head. By judging whether the no-go gauge head and the go gauge head can pass through the threaded hole, the qualification of the threaded hole can be obtained. The existing go and no-go gauge screwing action is generally completed manually with the help of tools. This inspection method is inefficient and has high labor costs, which is difficult to meet the inspection needs.

[0064] In this regard, the present embodiment provides a go / no-go gauge detection mechanism that can automatically realize the screwing in and out of the go / no-go gauge and automatically determine the pass / fail status of the threaded hole, thereby improving the detection efficiency, improving the detection accuracy, and saving the detection cost. Figure 4 , Fig. 9 and Fig.10As shown, it includes a stop gauge detection mechanism 5 and a go gauge detection mechanism 6, both of which are installed on a preset machine platform 1, and a conveying track 3 is provided on the machine platform 1, and the conveying track 3 is used to convey multiple workpieces 100, and the stop gauge detection mechanism 5 and the go gauge detection mechanism 6 are both arranged adjacent to the conveying track 3, and the go gauge detection mechanism 6 is located at the discharge side of the stop gauge detection mechanism 5, the stop gauge detection mechanism 5 is used to drive the stop gauge head 500 to screw into the threaded hole of the workpiece 100, and the go gauge detection mechanism 6 is used to drive the go gauge head 600 to screw into the threaded hole of the workpiece 100, and the stop gauge detection mechanism 5 includes a vertical A vertical support 50 is provided, on which a vertical slide rail 51 is fixed, on which a vertical slide rail 51 is provided, on which a vertical slide seat 52 is provided, on which a vertical slide arm 520 is provided, and on which the vertical slide seat 52 is provided, and the vertical slide arm 520 can slide up and down a preset length relative to the vertical slide seat 52, and on which a fixed support arm 521 is installed, and the fixed support arm 521 is located above the vertical slide arm 520, on which a vertical push rod 522 is penetrated, and the two are slidably connected, and on which a spring 523 is sleeved, and the upper end of the spring 523 abuts against the fixed support arm 521, and the lower end of the spring 523 is connected to the vertical push rod 5 22, the lower end of the vertical push rod 522 is aligned with the vertical slide arm 520, and the vertical push rod 522 is elastically pressed against the vertical slide arm 520 by the elastic force applied by the spring 523, and the stop gauge detection mechanism 5 includes a lifting sensing mechanism 55 for sensing the lifting state of the vertical slide arm 520, a vertically arranged screw-in motor 53 is fixed on the vertical slide arm 520, and the rotating shaft 530 of the screw-in motor 53 is arranged downward, and the stop gauge head 500 is installed at the lower end of the rotating shaft 530, and a vertical feed motor module 54 is fixed on the vertical support 50, and the driving end of the vertical feed motor module 54 is connected to the vertical slide seat 52, The vertical feed motor module 54 drives the vertical slide 52 to slide up and down, and drives the stop gauge head 500 to rotate forward or reversely by means of the screw-in motor 53, thereby driving the stop gauge head 500 to screw in or out of the threaded hole of the workpiece 100. When the stop gauge head 500 has not passed through the threaded hole, the vertical slide arm 520 rises relative to the vertical slide 52, and the lifting and lowering sensing mechanism 55 outputs an electrical signal. When the stop gauge head 500 passes through the threaded hole, the vertical slide arm 520 is stationary relative to the vertical slide 52, and the lifting and lowering sensing mechanism 55 has no electrical signal output. The structure of the through gauge detection mechanism 6 is the same as that of the stop gauge detection mechanism 5.

[0065] In the above-mentioned go / no-go gauge detection mechanism, under the cooperation of the vertical feed motor module 54 and the screw-in motor 53, the no-go gauge head 500 and the go / no-go gauge head 600 can be driven to rise and fall and rotate forward and backward, thereby completing the action of screwing in or out of the threaded hole. On this basis, if the no-go gauge head 500 does not pass through the threaded hole, the vertical slide arm 520 rises relative to the vertical slide seat 52 under the action of resistance. At this time, the lifting and lowering sensing mechanism 55 senses the rising action of the vertical slide arm 520, and then outputs an electrical signal, indicating that the no-go gauge detection is qualified; when the no-go gauge head 500 passes through the threaded hole, the vertical slide arm 520 is stationary relative to the vertical slide seat 52, and the lifting and lowering sensing mechanism 55 has no electrical signal output, indicating that the threaded hole is too large and the no-go gauge detection is unqualified. Because the structure of the go / no-go gauge detection mechanism 6 is the same as that of the no-go gauge detection mechanism 5, the go / no-go gauge detection mechanism 6 also realizes automatic judgment of whether the go / no-go gauge detection is qualified or not through the above-mentioned principle. Compared with the prior art, the present invention not only realizes the function of automatically screwing the go / no-go gauge into and out of the threaded hole, but also can automatically judge the qualification of the threaded hole, which greatly improves the detection efficiency and detection accuracy of the go / no-go gauge, not only saves the detection cost, but also better meets the detection requirements.

[0066] As a preferred embodiment, the lifting sensing mechanism 55 includes a paddle 550 and an infrared tube sensor 551, the paddle 550 is fixed on the vertical slide arm 520, and the infrared tube sensor 551 is fixed on the vertical slide seat 52. When the vertical slide arm 520 rises relative to the vertical slide seat 52, the paddle 550 passes through the infrared tube sensor 551 to cause the infrared tube sensor 551 to generate an electrical signal.

[0067] The lifting sensing mechanism 55 of the above structure is only a preferred method, but is not limited to this in practical applications. That is, according to actual needs, it can also be replaced by other mechanisms with equivalent sensing functions, and these alternatives all fall within the protection scope of the present invention.

[0068] In order to improve the stability and reliability of the rotation action, in this embodiment, a bearing seat 531 is fixed on the vertical sliding arm 520 , a bearing 532 is provided in the bearing seat 531 , and the rotating shaft 530 passes through the bearing 532 .

[0069] In order to limit the sliding stroke of the vertical slide 52, in this embodiment, a vertical limiting bracket 501 is fixed to the vertical support 50, and a vertical limiting ejector pin 502 is provided on the vertical limiting bracket 501. The vertical limiting bracket 501 is located below the vertical slide 52, and the vertical limiting ejector pin 502 is aligned with the vertical slide 52.

[0070] In order to facilitate the adjustment of the position of the vertical limiting ejector pin 502 , in this embodiment, the vertical limiting ejector pin 502 is screwed onto the vertical limiting bracket 501 .

[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 substitutions or improvements made within the technical scope of the present invention should be included in the scope of protection of the present invention.

Claims

1. An automatic go / no-go gauge testing machine for detecting threaded holes, characterized in that: The machine comprises a machine platform, on which a feeding mechanism, a conveying track, a swimming-type propulsion mechanism, a stop gauge detection mechanism, a through gauge detection mechanism and a good-part receiving box are arranged, wherein: The feeding mechanism is used to convey the workpiece to be inspected; The feeding end of the conveying track is arranged adjacent to the discharging end of the feeding mechanism; The swimming propulsion mechanism is arranged in parallel with the conveying track, and is used to push the workpieces conveyed by the loading mechanism into the conveying track, and to push the workpieces on the conveying track in a discharging direction one by one; The stop gauge detection mechanism is arranged adjacent to the conveying track, and the stop gauge detection mechanism is used to perform a stop gauge detection on the workpiece conveyed to the workstation below the stop gauge detection mechanism; The through gauge detection mechanism is arranged adjacent to the conveying track, and the through gauge detection mechanism is located at the discharge side of the stop gauge detection mechanism, and the through gauge detection mechanism is used to perform through gauge detection on the workpiece conveyed to the workstation below the through gauge detection mechanism; The good-part receiving box is located at the discharge side of the conveying track, and the good-part receiving box is used to collect the workpieces conveyed by the conveying track; The invention comprises a waste unloading mechanism, wherein the waste unloading mechanism comprises a push-pull block, the push-pull block is embedded on the conveying track, the top surface of the push-pull block is flush with the conveying surface of the conveying track, and the push-pull block is slidably connected with the conveying track, a waste opening is opened on the machine table at the bottom of the push-pull block, and a waste box corresponding to the waste opening is arranged under the machine table, a push-pull cylinder is fixed on the machine table, and the output shaft of the push-pull cylinder is connected to the push-pull block, when the workpiece transported to the feeding side of the push-pull block is waste, the push-pull cylinder drives the push-pull block to move outward to expose the waste opening, and when the swimming propulsion mechanism pushes the workpiece again, the workpiece falls into the waste box through the waste opening; The sliding direction of the push-pull block is perpendicular to the length direction of the conveying track; A waste guide groove arranged obliquely is fixed at the bottom of the machine platform, and the waste box is located below the outlet of the waste guide groove; The waste parts unloading mechanism is provided on the discharge side of the stop gauge detection mechanism and the discharge side of the through gauge detection mechanism; A vertical through hole is provided on the workstation below the stop gauge detection mechanism and the workstation below the through gauge detection mechanism, and the vertical through hole runs through the upper and lower sides of the conveying track. A vertically arranged positioning cylinder is fixed below the machine platform, and a positioning lifting block is fixed on the telescopic shaft of the positioning cylinder. A positioning finger capable of engaging with the workpiece is formed on the top of the positioning lifting block. When the workpiece is transferred to the top of the vertical through hole, the positioning cylinder drives the positioning lifting block to rise so that the positioning finger engages with the workpiece, thereby positioning the workpiece on the workstation below the stop gauge detection mechanism and the workstation below the through gauge detection mechanism; The swimming propulsion mechanism includes a fixed bracket fixed under the machine platform, a transverse slide rail is provided on the fixed bracket, a transverse movable platform is provided on the transverse slide rail and the two are slidably connected, a longitudinal slide rail is fixed on the transverse translation platform, a longitudinal movable platform is provided on the longitudinal slide rail and the two are slidably connected, a transverse movable cylinder is fixed on the fixed bracket, the output shaft of the transverse movable cylinder is connected to the transverse translation platform, a longitudinal movable cylinder is fixed on the transverse translation platform, the output shaft of the longitudinal movable cylinder is connected to the longitudinal movable platform, and the longitudinal movable cylinder is fixed on the transverse translation platform. A transverse translation arm is fixed on the top of the moving platform, the transverse translation arm passes through the machine platform and extends upward, a plurality of mutually parallel shifting blocks are fixed on the transverse translation arm, the plurality of shifting blocks are evenly distributed on the transverse translation arm, and the shifting blocks and the transverse translation arm are perpendicular to each other, the transverse translation arm is driven up and down by the longitudinal moving cylinder to make the shifting blocks move in and out from between two adjacent workpieces, and the transverse translation arm is driven to move transversely by the transverse moving cylinder to make the shifting blocks push the workpieces in the discharge direction at each station; A loading lifting cylinder is fixed under the machine platform, and a loading lifting block is fixed on the output shaft of the loading lifting cylinder, and the loading lifting block is located between the feeding end of the conveying track and the discharging end of the loading mechanism. When the loading lifting cylinder drives the loading lifting block to descend, the loading lifting block is flush with the discharging end of the loading mechanism, and the workpiece transported by the loading mechanism is translated onto the loading lifting block. When the loading lifting cylinder drives the loading lifting block to rise, the loading lifting block is flush with the feeding end of the conveying track. When the lateral moving cylinder drives the lateral translation support arm to move lateraly, the shifting block pushes the workpiece on the loading lifting block into the conveying track. The stop gauge detection mechanism includes a vertical support, a vertical slide rail is fixed on the vertical support, a vertical slide rail is provided with a vertical slide, a vertical slide seat is provided with a vertical sliding arm, and the vertical slide arm can slide up and down a preset length relative to the vertical slide seat, and a fixed support arm is installed on the vertical slide, and the fixed support arm is located above the vertical slide arm, and a vertical push rod is passed through the fixed support arm and the two are slidably connected. A spring is sleeved on the vertical push rod, the upper end of the spring abuts against the fixed support arm, the lower end of the spring is connected to the vertical push rod, the lower end of the vertical push rod is aligned with the vertical slide arm, and the vertical push rod is elastically pressed against the vertical slide arm by the elastic force applied by the spring. The stop gauge detection mechanism includes a lifting sensing mechanism for sensing the lifting state of the vertical slide arm, and the vertical slide arm A vertically arranged precession motor is fixed, and the rotating shaft of the precession motor is arranged downward, and the stop gauge head is installed at the lower end of the rotating shaft. A vertical feed motor module is fixed on the vertical support, and the driving end of the vertical feed motor module is connected to the vertical slide, and the vertical slide is driven to slide up and down by the vertical feed motor module, and the stop gauge head is driven to rotate forward or reversely by the precession motor, thereby driving the stop gauge head to be screwed in or out of the threaded hole of the workpiece. When the stop gauge head does not pass through the threaded hole, the vertical slide arm rises relative to the vertical slide, and the lifting sensing mechanism outputs an electrical signal. When the stop gauge head passes through the threaded hole, the vertical slide arm is stationary relative to the vertical slide, and the lifting sensing mechanism has no electrical signal output. The structure of the through gauge detection mechanism is the same as that of the stop gauge detection mechanism.

2. The automatic go / no-go gauge inspection machine for threaded holes according to claim 1, characterized in that: The number of the feeding mechanism, conveying track, stop gauge detection mechanism and through gauge detection mechanism are all two, the feeding mechanism corresponds to the conveying track one by one, the two stop gauge detection mechanisms are respectively arranged on both sides of the two conveying tracks, and the two through gauge detection mechanisms are respectively arranged on both sides of the two conveying tracks.

3. The automatic go / no-go gauge inspection machine for threaded holes according to claim 1, characterized in that: A laser sensor is fixed on the outer side of the conveying track, and the detection end of the laser sensor faces the workpiece. When the laser sensor detects the workpiece, an electrical signal is output.

4. The automatic go / no-go gauge inspection machine for threaded holes according to claim 1, characterized in that: A machine box is fixed on the machine platform, and the feeding mechanism, the conveying track, the swimming propulsion mechanism, the stop gauge detection mechanism and the through gauge detection mechanism are all arranged in the machine box.

5. An automatic detection process for a go / no-go gauge for detecting a threaded hole, characterized in that: The process is implemented based on the detection machine according to claim 1, and the process includes: Step S1, using the feeding mechanism to convey the workpiece to be inspected; Step S2, the swimming propulsion mechanism pushes the workpiece conveyed by the feeding mechanism into the conveying track, and at the same time pushes the workpiece on the conveying track toward the discharge direction one by one; Step S3, the stop gauge detection mechanism performs a stop gauge detection on the workpiece transported to the station below the stop gauge detection mechanism; Step S4, the through-gauge detection mechanism performs a through-gauge detection on the workpiece transported to the workstation below the through-gauge detection mechanism; Step S5, the workpieces conveyed by the conveying track fall into the good-part receiving box, and then the workpieces are collected.

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