A plastic part threaded hole go-no-go gauge detection mechanism

Abstract

The utility model provides a kind of plastic piece thread hole pass-stop gauge detection mechanism, including rack, detection component, present group component, misplacement component and indication component, operator promotes handle, two groups of sliders move forward together, until workpiece thread hole and thread stop gauge begin to contact this time stop to exert thrust, since qualified thread hole meets thread stop gauge and will stop, meet thread pass gauge and can be screwed in, therefore the balance of rack and pinion is broken and misplacement occurs, and the distance of gear rotation is exactly the detection depth of thread hole, again cooperate distance inductor control motor's positive and negative rotation to reach the effect of material withdrawal, the present mechanism cleverly uses a misplacement component to solve the problem that detection operation of pass gauge and stop gauge is carried out simultaneously, and further utilize this stroke difference to cooperate indication component to help operator to judge quickly whether thread hole is qualified, improve work efficiency.

Description

Technical Field

[0001] This utility model relates to the field of threaded hole detection technology, specifically to a test mechanism for threaded holes in plastic parts. Background Technology

[0002] Threaded connections are a common type of connection in mechanical design. They allow for the tightening and loosening of parts simply by rotating bolts or nuts, offering convenient operation without the need for special tools. Their simple structure, ease of manufacture, and low cost have led to their widespread use across industries. Our factory also produces plastic parts with threaded holes. To ensure these holes meet quality standards, they need to be inspected using go / no-go gauges. Traditionally, workers would manually inspect the threaded holes with these gauges.

[0003] For example, Chinese utility model publication CN208536713U provides an integrated go / no-go gauge for internal threads, including a clamping shank, a no-go gauge, a middle guide post, a go gauge, and a front guide post. The middle guide post is designed between the go and no-go gauges. A front guide post is located at the front end of the go gauge. When switching to no-go gauge testing after go gauge testing, the direction and position of the gauge axis are ensured to maintain a small deviation from the axis of the threaded hole being tested, thus smoothly performing no-go gauge testing on the thread. This avoids the impact of axis deviation on no-go gauge testing. This utility model meets the needs of the automation field for integrated go / no-go gauges for thread testing and reduces the cost of using integrated go / no-go gauges for threads.

[0004] Analysis of existing technologies reveals that the method of sequentially inspecting the go and no-go gauges for threaded holes is not efficient enough, and manual screwing of the go and no-go gauges into the threaded holes is prone to errors, which can damage the threaded holes of the workpiece. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model proposes a testing mechanism for threaded holes in plastic parts, which solves the technical problems mentioned in the background art, namely, the inefficiency of sequentially testing the threaded hole go gauge and no-go gauge, and the inevitable errors that occur when manually screwing the go and no-go gauges into the threaded hole, leading to damage to the threaded hole of the workpiece.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a testing mechanism for threaded holes in plastic parts, comprising: frame; The detection assembly is rotatably mounted on the frame, and the detection assembly includes a thread go gauge and a thread no-go gauge; A presentation assembly is slidably arranged on the frame, and the presentation assembly includes two sets of presentation platforms; A misalignment assembly, mounted on the frame, drives two sets of the placement platforms to alternately connect with bolts on the threaded go gauge and threaded no-go gauge; and An indicator component is disposed on the misalignment component.

[0007] Furthermore, the detection component includes: Two sets of motors are fixedly connected to the frame. One set of motors has a threaded go gauge fixedly connected to one end, and the other set of motors has a threaded no-go gauge fixedly connected to one end. Two sets of distance sensors are provided, which are fixedly connected to the frame and located on one side of the presentation assembly.

[0008] Furthermore, the presentation component also includes: Two sets of sliders are provided, each slidably mounted on the frame, and the sliders are fixedly connected to the placement platform; and Two sets of contour grooves are provided and are set on the presentation platform.

[0009] Furthermore, the frame is provided with two sets of reset blocks, which are located on one side of the two sets of sliders respectively.

[0010] Furthermore, the misalignment component includes: Two sets of racks are provided, which are fixedly installed on the two sets of sliders in parallel opposite positions; The push block is slidably arranged on the frame; and The gear is rotatably mounted on the push block and meshes with the two sets of racks.

[0011] Furthermore, the indicating component includes scale lines, which are arranged in two sets on the gear and the push block respectively.

[0012] Furthermore, the push block is provided with a handle.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. This mechanism is equipped with two sets of placement platforms, which can simultaneously carry out the inspection of go gauges and no-go gauges. Since the qualification conditions for go gauges and no-go gauges to inspect threaded holes are different (go gauges need to be screwed into the threaded hole, while no-go gauges cannot be screwed into the threaded hole), there will inevitably be a stroke difference if go gauges and no-go gauges are inspected at the same time. This mechanism cleverly uses a misalignment component to solve this problem, and further utilizes this stroke difference in conjunction with the indicating component to help operators quickly determine whether the threaded hole is qualified, thereby improving work efficiency.

[0014] 2. This mechanism uses two sets of sliders arranged in parallel on the frame to move the threaded hole to be tested close to the go gauge and no-go gauge. The parallelism between the sliders ensures the accuracy of each test, reduces operator fatigue caused by repetitive work, and minimizes damage to the threaded hole of the workpiece due to alignment errors, thereby reducing factory losses and lowering factory costs. Attached Figure Description

[0015] To more clearly illustrate the specific embodiments of this utility model, the accompanying drawings used in the specific embodiments will be briefly described below. In all the drawings, the elements or parts are not necessarily drawn to scale.

[0016] Figure 1 A three-dimensional structural schematic diagram of a plastic part thread hole go / no-go gauge testing mechanism provided by this utility model; Figure 2 A schematic diagram of the working state of a plastic part thread hole go / no-go gauge testing mechanism provided by this utility model.

[0017] Figure label: 101. Frame; 102. Thread go gauge; 103. Thread no-go gauge; 104. Scale marks; 201. Motor; 202. Proximity sensor; 301. Presentation platform; 302. Slider; 303. Reset stop; 304. Contouring groove; 305. Rack; 306. Push block; 307. Gear; 308. Handle. Detailed Implementation

[0018] The present invention will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present invention and should not be construed as limiting the scope of protection of the present invention. Those skilled in the art can make some non-essential improvements and adjustments to the present invention based on the above application content.

[0019] Example: like Figure 1 , 2 As shown, this utility model provides a test mechanism for threaded holes of plastic parts, including a frame 101, on which a test component and a presentation component are installed. A misalignment component is arranged on the presentation component, and an indicator component is provided on the misalignment component.

[0020] The detection components include a thread go gauge 102, a thread no-go gauge 103, a motor 201, and a distance sensor 202. The placement components include a placement platform 301, a slider 302, and a contour groove 304. The misalignment components include a rack 305, a push block 306, and a gear 307. The indicating components include a scale line 104. Two sets of motors 201 and two sets of distance sensors 202 (model: E3FM-DS30N1-100) are fixedly connected to the frame 101. Thread go gauges 102 and thread no-go gauges 103 are fixedly mounted on the output shafts of the two sets of motors 201, respectively. Two sets of sliders 302 are slidably mounted on the frame 101. A placement platform 301 is fixedly connected to the slider 302. The placement platform 301 has contour grooves 304 to fit and accommodate the tape. The workpiece to be inspected, and the threaded hole of the workpiece fixed on the platform 301, should be coaxial with the threaded go gauge 102 or threaded no-go gauge 103. A push block 306 is slidably mounted on the frame 101, and a gear 307 is rotatably mounted on the push block 306. Two sets of slide blocks 302 are respectively mounted with racks 305, and the two sets of racks 305 are parallel and fixedly mounted on the two sets of slide blocks 302. The gear 307 is located between the two sets of racks 305 and meshes with the two sets of racks 305. A scale line 104 is set on the gear 307 and the push block 306 respectively. The operator can judge whether the workpiece is qualified according to whether the two scale lines 104 are aligned. In order to facilitate the operator to push the push block 306, a handle 308 is fixedly connected to the push block 306.

[0021] When the operator pushes handle 308, both sets of sliders 302 move forward together. At this time, the release component and the misalignment component are only subjected to one thrust, so the rack 305 and gear 307 maintain a balanced state and do not slip relative to each other. The thrust is stopped when the workpiece threaded hole begins to contact the thread stop gauge 103. Since a qualified threaded hole will stop when it encounters the thread stop gauge 103 and can be screwed into the thread go gauge 102, the rack 305 on the thread stop gauge 103 side will experience a resistance, while the rack 305 on the thread go gauge 102 side will experience a tension. The balance between the rack 305 and gear 307 is broken, and misalignment occurs. The distance that gear 307 rotates is exactly the detection depth of the threaded hole, which, in conjunction with the distance sensor... The forward and reverse rotation of the control motor 201 (202) achieves the effect of unloading the material. After the workpiece on the thread gauge 102 side is completely withdrawn, the operator pulls back the push block 306 and it contacts the reset stop block 303, ensuring that the two sets of sliders 302 return to the flush state. This mechanism is equipped with two sets of placement platforms 301, which can simultaneously carry out the inspection of go gauges and no-go gauges. Since the qualification conditions for go gauges and no-go gauges to inspect threaded holes are different (go gauges need to be screwed into the threaded hole, while no-go gauges cannot be screwed into), there will inevitably be a stroke difference if go gauges and no-go gauges are inspected at the same time. This mechanism cleverly uses a misalignment component to solve this problem, and further utilizes this stroke difference in conjunction with the indicator component to help the operator quickly determine whether the threaded hole is qualified, thereby improving work efficiency.

[0022] The specific usage and beneficial effects of this utility model are as follows: The operator pushes handle 308, and both sets of sliders 302 move forward together until the threaded hole of the workpiece begins to contact the thread stop gauge 103. At this point, the pushing force is stopped. Since a qualified threaded hole will stop when it encounters the thread stop gauge 103, but can be screwed into the thread go gauge 102, the balance between rack 305 and gear 307 is broken and misalignment occurs. The distance that gear 307 rotates is exactly the detection depth of the threaded hole. Combined with the distance sensor 202 controlling the forward and reverse rotation of motor 201, the material is ejected. After the workpiece on the thread go gauge 102 side is completely ejected, the operator pulls back push block 306, which contacts the reset stop block 303, ensuring that the two sets of sliders 302 return to a level state. This mechanism cleverly uses a misalignment component to solve the problem of a stroke difference that is inevitable when performing go and stop gauge inspections simultaneously. Furthermore, this stroke difference is used in conjunction with the indicator component to help the operator quickly determine whether the threaded hole is qualified, thus improving work efficiency.

[0023] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above. Modifications or improvements can be made to this utility model, which is obvious to those skilled in the art. Therefore, all such modifications or improvements made without departing from the spirit of this utility model fall within the scope of protection claimed by this utility model.

Claims

1. A testing mechanism for threaded holes in plastic parts, characterized in that, Including: Rack (101); The detection assembly is rotatably mounted on the frame (101), and the detection assembly includes a thread go gauge (102) and a thread no-go gauge (103). The presentation assembly is slidably arranged on the frame (101), and the presentation assembly includes two sets of presentation platforms (301). A misalignment assembly, mounted on the frame (101), drives two sets of the placement platforms (301) to alternately connect with bolts on the threaded go gauge (102) and the threaded no-go gauge (103); and An indicator component is disposed on the misalignment component.

2. The threaded hole go / no-go gauge testing mechanism for plastic parts according to claim 1, characterized in that, The detection component also includes: Two sets of motors (201) are fixedly connected to the frame (101). One set of motors (201) has a threaded go gauge (102) fixedly connected to one end, and the other set of motors (201) has a threaded no-go gauge (103) fixedly connected to one end. Two sets of distance sensors (202) are fixedly connected to the frame (101) and located on one side of the presentation assembly.

3. The threaded hole go / no-go gauge testing mechanism for plastic parts according to claim 1, characterized in that, The presentation component further includes: Two sets of sliders (302) are provided, each slidably mounted on the frame (101). The sliders (302) are fixedly connected to the presentation platform (301). Two sets of contour grooves (304) are provided on the presentation platform (301).

4. The threaded hole go / no-go gauge testing mechanism for plastic parts according to claim 3, characterized in that: The frame (101) is provided with two sets of reset blocks (303), and the two sets of reset blocks (303) are respectively located on one side of the two sets of sliders (302).

5. The threaded hole go / no-go gauge testing mechanism for plastic parts according to claim 3, characterized in that, The misalignment component includes: Two sets of racks (305) are provided and are fixedly installed on the two sets of sliders (302) in parallel opposite positions; A push block (306) is slidably arranged on the frame (101); and The gear (307) is rotatably mounted on the push block (306) and meshes with the two sets of racks (305).

6. The threaded hole go / no-go gauge testing mechanism for plastic parts according to claim 5, characterized in that: The indicator component includes scale lines (104), which are arranged in two sets on the gear (307) and the push block (306), respectively.

7. The plastic part thread hole go / no-go gauge testing mechanism according to claim 5, characterized in that, The push block (306) is provided with a handle (308).

Images