CN119197240A - A method and device for precise detection and calibration of relative position of chain shell - Google Patents
A method and device for precise detection and calibration of relative position of chain shell Download PDFInfo
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- CN119197240A CN119197240A CN202411500239.5A CN202411500239A CN119197240A CN 119197240 A CN119197240 A CN 119197240A CN 202411500239 A CN202411500239 A CN 202411500239A CN 119197240 A CN119197240 A CN 119197240A
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- chain
- telescopic actuator
- telescopic
- shell
- fork
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/02—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
本发明提供一种链壳配合相对位置精密检测和校准的方法与装置，属于航空技术领域，该装置中量规安装固定在中心台上下两端；锥形套与中心台固连，且与中心台通孔同轴同直径；伸缩作动筒为空心筒形结构，与伸缩作动棒前端配合；伸缩作动棒后端接续把手，伸缩作动棒中间凸台伸入锥形套凹槽中；卡环布置在下端量规上，且与伸缩作动筒固连；当逆时针转动把手时，伸缩作动棒旋入伸缩作动筒，伸缩作动筒向后退，鼻首矩形块与矩形尺台阶之间距离变小；当顺时针转动把手时，伸缩作动棒旋出伸缩作动筒，伸缩作动筒向前进，鼻首矩形块与矩形尺台阶之间距离变大；鼻首矩形块位于伸缩作动筒最前端卡环的对侧。本发明可替代传统多次测量读法，提高了效率和精度。
The present invention provides a method and device for precise detection and calibration of the relative position of chain shells, belonging to the field of aviation technology. In the device, the gauge is installed and fixed at the upper and lower ends of the center platform; the conical sleeve is fixedly connected to the center platform and is coaxial and has the same diameter as the through hole of the center platform; the telescopic actuator is a hollow cylindrical structure, which is matched with the front end of the telescopic actuator rod; the rear end of the telescopic actuator rod is connected to the handle, and the middle boss of the telescopic actuator rod extends into the groove of the conical sleeve; the clamping ring is arranged on the lower end gauge and is fixedly connected to the telescopic actuator cylinder; when the handle is turned counterclockwise, the telescopic actuator rod is screwed into the telescopic actuator cylinder, the telescopic actuator cylinder retreats, and the distance between the nose rectangular block and the rectangular ruler step becomes smaller; when the handle is turned clockwise, the telescopic actuator rod is screwed out of the telescopic actuator cylinder, the telescopic actuator cylinder moves forward, and the distance between the nose rectangular block and the rectangular ruler step becomes larger; the nose rectangular block is located on the opposite side of the clamping ring at the front end of the telescopic actuator cylinder. The present invention can replace the traditional multiple measurement reading method, and improves efficiency and accuracy.
Description
Technical Field
The invention belongs to the technical field of aviation, and particularly relates to a method and a device for precisely detecting and calibrating a relative position of a chain shell.
Background
In industrial assembly, strip-shaped shell products such as metal cosmetic bottles, various gas storage tanks and the like are assembled into a sequence in a manner of fixing and connecting by using a clamping chain, and the sequence is used as a preliminary assembly body for further connecting processing or continuous use. The relative positions of the strip-shaped shell products and the clamping chains are critical, if the relative positions of the strip-shaped shell products and the clamping chains are not accurate enough, the relative sizes are not within the tolerance range, product clamping stagnation can occur in the subsequent continuous processing or using process, and if the clamping stagnation is serious, the safety of processing machines or operators can be endangered. Therefore, in order to accurately ensure that the relative positions of the strip-shaped shell products and the chain are accurate and the relative sizes are within the tolerance range, the measurement is generally carried out by using two special gauges of large and small sizes after the preliminary assembly is completed, the size between the bottom plane of the shell and the chain clamping flange is generally measured, and is called a chain shell distance, whether the large gauge measures and displays the chain shell distance is larger than the tolerance range or not, and the small gauge measures and displays whether the chain shell distance is smaller than the tolerance range or not. If the chain shell distance is within the tolerance range, the relative position of the chain shell needs to be adjusted if the chain shell distance is larger or smaller than the tolerance range, the chain shell distance is larger than the tolerance range, the chain shell is pushed into a deeper position of the chain by a hammer to tap, and the chain shell distance is smaller than the tolerance range, and is pressed again after the shell is removed.
Whether the special gauge for measuring the distance of the chain shell or the traditional adjustment of the relative position of the chain shell is used, the two conditions of time and labor waste and the traditional adjustment of the relative position of the chain shell are rough adjustment, are not accurate enough and may have repeated conditions.
Disclosure of Invention
In order to solve the problems of lower efficiency and inaccurate measurement of the distance between the chain shells in the prior art, the invention provides the method and the device for precisely detecting and calibrating the relative positions of the chain shells, which adopt an visualized one-time measurement method to replace the traditional multiple measurement reading method, thereby improving the efficiency, reducing human errors, changing the rough, inaccurate and possibly repeated, time-consuming and labor-consuming conditions of the traditional method for adjusting the relative positions of the chain shells, having scientificity, enhancing the practicability and improving the efficiency and the accuracy. The technical scheme is as follows:
In a first aspect, a device for precisely detecting and calibrating the matching relative position of a chain shell is provided, which comprises a nose rectangular block 100, a telescopic actuating cylinder 200, a gauge 300, a clamping ring 400, a center table 500, a conical sleeve 600, a telescopic actuating rod 700 and a handle 800;
the gauge 300 is installed and fixed at the upper and lower ends of the center table 500;
The conical sleeve 600 is fixedly connected with the center table 500 and has the same diameter with the through hole of the center table 500, the telescopic actuating cylinder 200 is of a hollow cylindrical structure, is internally provided with threads and is matched with the threads at the front end of the telescopic actuating rod 700, the rear end of the telescopic actuating rod 700 is connected with the handle 800, and a middle boss of the telescopic actuating rod 700 stretches into a groove of the conical sleeve 600 to ensure that the telescopic actuating rod 700 can only rotate around the shaft thereof and cannot slide;
The snap ring 400 is arranged on the gauge 300 at the lower end and fixedly connected with the telescopic actuator cylinder 200;
When the handle 800 is rotated counterclockwise, the telescopic actuating rod 700 is screwed into the telescopic actuating cylinder 200, the telescopic actuating cylinder 200 is retreated because the telescopic actuating rod 700 is limited by the conical sleeve 600, the distance between the nose rectangular block 100 and the rectangular ruler step is reduced, when the handle 800 is rotated clockwise, the telescopic actuating rod 700 is screwed out of the telescopic actuating cylinder 200, and the telescopic actuating cylinder 200 is advanced because the telescopic actuating rod 700 is limited by the conical sleeve 600, the distance between the nose rectangular block 100 and the rectangular ruler step is increased;
the nose rectangular block 100 is disposed at the opposite side of the front-most collar 400 of the telescopic actuator 200, and is mainly used for clamping the front flange of the chain when the distance between the bottom end of the bar-shaped housing and the rear flange of the chain is greater than the upper tolerance limit, that is, the distance between the bottom end of the bar-shaped housing and the rear flange of the chain is too large.
Alternatively, gauge 300 is comprised of a small rectangular ruler 301, an upper tolerance limit line 302, a lower tolerance limit line 303, a large rectangular ruler 304, a fork-shaped bottom plate 305,
The large rectangular ruler 304 is vertically arranged and fixed on the fork-shaped bottom plate 305, the large rectangular ruler 304 is flush with the top end of the fork-shaped bottom plate 305, the small rectangular ruler 301 is an extension section of the large rectangular ruler 304, a tolerance lower limit line 303 is used as a boundary, rectangular ruler steps are formed between the small rectangular ruler 301 and the large rectangular ruler 304 due to height drop, the fork-shaped bottom plate 305 is designed into a fork-shaped structure, the tolerance upper limit line 302 is positioned at the front end of the tolerance lower limit line 303, the tolerance upper limit line 302 and the tolerance lower limit line are parallel, and the tolerance upper limit line and the tolerance lower limit line are kept parallel with the fork-shaped bottom plate 305 so as to ensure measurement accuracy.
Optionally, the upper tolerance limit line 302, the lower tolerance limit line 303, the snap ring 400, the fork bottom 305 are perpendicular to the main axis of the device.
The center platform 500 is a square boss with an outer contour of L side length, the inner contour is a through pipe with a diameter Q, the thickness is 0.5L, L is 1 to 2 cm, Q is smaller than L, the inner contour of the square boss is used for accommodating the telescopic actuator cylinder to slide in the square boss, and the size of the square boss is not too large, so that the whole structure is more compact.
Wherein, telescopic actuator cylinder 200, telescopic actuating rod 700, through hole of center table 500, taper sleeve 600, handle 800 are coaxial, this axis is the main axis of the device.
Further, the surface of the handle 800 is provided with anti-slip lines for anti-slip.
The snap ring 400 is arranged at the front end of the fork-shaped bottom plate 305 at the lower end, and is mainly used for clamping the boss at the bottom of the strip-shaped shell when the distance between the bottom end of the strip-shaped shell and the rear flange of the clamping chain is smaller than the lower tolerance limit, namely, the distance between the bottom end of the strip-shaped shell and the rear flange of the clamping chain is too small.
In a second aspect, a method for precisely detecting and calibrating the relative position of a chain case in cooperation with the device according to any one of the first aspects is provided, the method comprising the steps of:
In the use process, the detection of the relative position of the chain shell is carried out by preferentially using one side of the non-clamping ring 400, and whether the distance between the bottom end of the strip-shaped shell and the rear flange of the clamping chain is larger than the lower tolerance limit and smaller than the upper tolerance limit is measured; if the rear flange of the chain is interfered with the large rectangular ruler 304, or the fork-shaped bottom plate 305 cannot be attached to the bottom end of the strip-shaped shell when the step of the rectangular ruler is propped against the rear flange of the chain, the relative position of the chain shell is too small, and the shell pulling operation is needed to be carried out, so that the step 2 is executed;
Step 2, the rectangular ruler step of the using side gauge 300 butts against the rear flange of the chain, the handle 800 is rotated anticlockwise, the telescopic actuator cylinder 200 is retracted with the clamping ring 400, the bar-shaped shell is pulled out of the chain slightly backwards, when the bottom end of the bar-shaped shell is completely attached to the side fork-shaped bottom plate 305, the distance between the bottom end of the bar-shaped shell and the rear flange of the chain is determined to be just up to the lower tolerance limit, and the step is shell pulling operation;
Step 3, the fork-shaped bottom plate 305 of the side gauge 300 is used for being attached to the bottom end of the strip-shaped shell, the handle 800 is rotated anticlockwise, the telescopic actuator cylinder 200 is retracted with the nose rectangular block 100, the fork-shaped bottom plate 305 pushes the strip-shaped shell forward to slightly push the strip-shaped shell into the chain, and when the rectangular ruler step on the side is completely abutted against the chain rear flange, the distance between the bottom end of the strip-shaped shell and the chain rear flange is determined to be just up to the upper tolerance limit. This step is a push-shell operation.
The invention has the advantages that:
(1) The special gauge based on the specific use scene of the chain case distance measurement is provided, and the visualized one-time measurement method is adopted to replace the traditional multiple measurement reading method, so that the efficiency is improved, and human errors are reduced.
(2) The method for accurately adjusting the relative position of the chain shell changes the situations of rough, inaccurate, repeated, time-consuming and labor-consuming existing in the traditional method for adjusting the relative position of the chain shell, has scientificity, enhances the practicability, improves the efficiency and improves the precision.
(3) The device has the advantages of simple structure, low manufacturing complexity, simple use mode, clear and understandable use logic, small volume, light weight and good economy.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a schematic illustration of a gauge of the present invention;
FIG. 3 is a schematic illustration of a push-shell operation of the present invention;
fig. 4 is a schematic drawing of the pulling operation of the present invention.
Detailed Description
The invention is described in further detail below with reference to specific embodiments and figures.
An embodiment of the present invention provides a device for precisely detecting and calibrating the matching relative position of a chain case, referring to fig. 1, the device includes a nose rectangular block 100, a telescopic actuator 200, a gauge 300, a snap ring 400, a center table 500, a conical sleeve 600, a telescopic actuator rod 700, and a handle 800. Wherein:
the gauge 300 is composed of a small rectangular ruler 301, an upper tolerance limit line 302, a lower tolerance limit line 303, a large rectangular ruler 304, and a fork-shaped bottom plate 305.
Specifically, the system device has the following constitution relationship and main functions:
The device of the invention mainly comprises a static part and a movable part, as shown in figure 1. The static components are a center table 500, a gauge 300 and a conical sleeve 600, and the moving components are a nose rectangular block 100, a telescopic actuator cylinder 200, a clamping ring 400, a telescopic actuator rod 700 and a handle 800.
The center table 500 is used as a middle mounting point of the whole device, the center table 500 is a square boss with an outer contour of L side length, the inner contour is a through pipe with a diameter Q, the thickness is 0.5L, L is generally selected to be 1-2 cm, and Q is slightly smaller than L.
The core measuring component of the device is a gauge 300, and the gauge 300 is fixedly arranged at the upper end and the lower end of the center table 500. As shown in fig. 2, the gauge 300 is composed of a small rectangular ruler 301, an upper tolerance limit line 302, a lower tolerance limit line 303, a large rectangular ruler 304 and a fork-shaped bottom plate 305, wherein the large rectangular ruler 304 is vertically installed and fixed on the fork-shaped bottom plate 305, and the large rectangular ruler 304 is flush with the top end of the fork-shaped bottom plate 305. The small rectangular ruler 301 is an extension of the large rectangular ruler 304 and is bounded by a tolerance lower limit line 303, and a rectangular ruler step is formed between the small rectangular ruler 301 and the large rectangular ruler 304 due to the height drop. The fork-shaped bottom plate 305 is designed in a fork-shaped structure. The upper tolerance limit line 302 is located at the front end of the lower tolerance limit line 303, both parallel, requiring both to remain highly parallel to the fork bottom 305 to ensure measurement accuracy.
The taper sleeve 600 is fixedly coupled to the center stage 500 and is coaxial with the through hole of the center stage 500 to have the same diameter. The telescopic actuating cylinder 200 is of a hollow cylindrical structure, is internally provided with threads, is in threaded fit with the front end of the telescopic actuating rod 700, and is connected with the handle 800 at the rear end of the telescopic actuating rod 700, and a middle boss of the telescopic actuating rod 700 stretches into a groove of the conical sleeve 600 so as to ensure that the telescopic actuating rod 700 can only rotate around the shaft of the telescopic actuating rod and cannot slide.
Telescopic actuator cylinder 200, telescopic actuator rod 700, through hole of center table 500, conical sleeve 600, handle 800 are strictly coaxial, this axis being the main axis of the device. The upper tolerance limit line 302, the lower tolerance limit line 303, the snap ring 400, and the fork mount 305 are exactly perpendicular to the main axis of the device. The small rectangular ruler 301 and the large rectangular ruler 304 are strictly perpendicular to the fork-shaped bottom plate 305.
In one embodiment, the surface of the handle 800 is provided with anti-slip lines for anti-slip. When the handle 800 is rotated counterclockwise, the telescopic actuating rod 700 is screwed into the telescopic actuating cylinder 200, and since the telescopic actuating rod 700 is limited by the taper sleeve 600, the telescopic actuating cylinder 200 is retracted rearward, and the distance between the nose rectangular block 100 and the rectangular step becomes small. When the handle 800 is rotated clockwise, the telescopic actuating rod 700 is rotated out of the telescopic actuating cylinder 200, and the telescopic actuating cylinder 200 is advanced forward because the telescopic actuating rod 700 is limited by the taper sleeve 600, and the distance between the nose rectangular block 100 and the rectangular rule step becomes large.
The snap ring 400 is disposed at the front end of one of the fork-shaped bottom plates 305 and fixedly connected with the telescopic actuator cylinder 200, and is mainly used for clamping the boss at the bottom of the strip-shaped shell when the distance between the bottom of the strip-shaped shell and the rear flange of the clamping chain is smaller than the lower limit of the tolerance, that is, when the distance between the bottom of the strip-shaped shell and the rear flange of the clamping chain is too small.
The nose rectangular block 100 is disposed at the opposite side of the front-most collar 400 of the telescopic actuator 200, and is mainly used for clamping the front flange of the chain when the distance between the bottom end of the bar-shaped housing and the rear flange of the chain is greater than the upper tolerance limit, that is, the distance between the bottom end of the bar-shaped housing and the rear flange of the chain is too large.
The device of the invention comprises the following steps:
In the step 1, during use, the detection of the relative position of the chain case is preferably performed by using one side of the non-clamping ring 400, that is, whether the distance P between the bottom end of the strip-shaped case and the rear flange of the clamping chain is greater than the lower limit of the tolerance and less than the upper limit of the tolerance is measured. The fork-shaped bottom plate 305 is completely attached to the bottom end of the strip-shaped shell, the main axis of the device is parallel to the axis of the strip-shaped shell, whether the rear edge of the rear flange of the clamping chain is between the upper tolerance limit line 302 and the lower tolerance limit line 303 is observed, if the rear edge of the rear flange of the clamping chain is in front of the upper tolerance limit line 302, the relative position of the chain shell is overlarge, and the shell pushing operation is needed, as shown in fig. 3, and step 3 is executed. If the rear flange of the chain is interfered with the large rectangular ruler 304, or if the fork-shaped bottom plate 305 cannot be attached to the bottom end of the strip-shaped shell when the step of the rectangular ruler abuts against the rear flange of the chain, the relative position of the chain shell is too small, and the shell pulling operation is required, as shown in fig. 4, and step 2 is executed.
Step 2, a snap ring 400 is disposed at the front end of one of the fork bottom plates 305 and fixedly connected with the telescopic actuator 200, and is mainly used for clamping the bottom boss of the strip-shaped shell when the distance P between the bottom end of the strip-shaped shell and the rear flange of the chain is smaller than the lower tolerance limit, that is, when the distance P between the bottom end of the strip-shaped shell and the rear flange of the chain is too small, the rectangular ruler step of the side gauge 300 is used for propping against the rear flange of the chain, the handle 800 is rotated anticlockwise, the telescopic actuator 200 is retracted backwards with the snap ring 400, the strip-shaped shell is pulled out of the chain slightly backwards, and when the bottom end of the strip-shaped shell is completely attached to the side fork bottom plate 305, the distance between the bottom end of the strip-shaped shell and the rear flange of the chain is just up to the lower tolerance limit. This step is a pulling operation.
Step 3, the nose rectangular block 100 is arranged at the opposite side of the front-most clamping ring 400 of the telescopic actuator 200, and the main function of the nose rectangular block is to clamp the front flange of the clamping chain by using the nose rectangular block 100 when the distance between the bottom end of the strip-shaped shell and the rear flange of the clamping chain is larger than the upper tolerance limit, and the fork-shaped bottom plate 305 of the side gauge 300 is used to clamp the bottom end of the strip-shaped shell, the handle 800 is rotated anticlockwise, the telescopic actuator 200 moves backwards with the nose rectangular block 100, the fork-shaped bottom plate 305 pushes the strip-shaped shell forward to slightly push the strip-shaped shell backwards into the clamping chain, and when the rectangular ruler step at the side completely butts against the rear flange of the clamping chain, the distance between the bottom end of the strip-shaped shell and the rear flange of the clamping chain is just up to the upper tolerance limit. This step is a push-shell operation.
The key points of the invention are as follows:
(1) The center table 500 is used as a middle mounting point of the whole device, the center table 500 is a square boss with an outer contour of L side length, the inner contour is a through pipe with a diameter Q, the thickness is 0.5L, L is generally selected to be 1-2 cm, and Q is slightly smaller than L.
(2) The core measuring component of the device is a gauge 300, and a rectangular ruler step is formed between a small rectangular ruler 301 and a large rectangular ruler 304 due to height difference. The fork-shaped bottom plate 305 is designed in a fork-shaped structure. The upper tolerance limit line 302 is located at the front end of the lower tolerance limit line 303, both parallel, requiring both to remain highly parallel to the fork bottom 305 to ensure measurement accuracy.
(3) Telescopic actuator cylinder 200, telescopic actuator rod 700, through hole of center table 500, conical sleeve 600, handle 800 are strictly coaxial, this axis being the main axis of the device. The upper tolerance limit line 302, the lower tolerance limit line 303, the snap ring 400, and the fork mount 305 are exactly perpendicular to the main axis of the device. The small rectangular ruler 301 and the large rectangular ruler 304 are strictly perpendicular to the fork-shaped bottom plate 305.
(4) The handle 800 is provided with anti-slip lines on its surface for anti-slip action.
The foregoing has outlined rather broadly the more detailed description of the invention in order that the detailed description thereof that follows may be better understood, and in order that the present invention may be better understood. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. In addition, the invention is not fully described in the conventional technology.
Claims (8)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411500239.5A CN119197240B (en) | 2024-10-25 | 2024-10-25 | A method and apparatus for precise detection and calibration of the relative position of chain and shell mating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411500239.5A CN119197240B (en) | 2024-10-25 | 2024-10-25 | A method and apparatus for precise detection and calibration of the relative position of chain and shell mating |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN119197240A true CN119197240A (en) | 2024-12-27 |
| CN119197240B CN119197240B (en) | 2025-12-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202411500239.5A Active CN119197240B (en) | 2024-10-25 | 2024-10-25 | A method and apparatus for precise detection and calibration of the relative position of chain and shell mating |
Country Status (1)
| Country | Link |
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| CN (1) | CN119197240B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1367093A (en) * | 1972-04-12 | 1974-09-18 | Hammond D C | Tranverse dimension gauges |
| US4686769A (en) * | 1985-07-08 | 1987-08-18 | Julius Blum Gesellschaft M.B.H. | Marking gauge for use in mounting hinges |
| US20090193907A1 (en) * | 2008-02-04 | 2009-08-06 | John Richard Wilbur | Roller Chain Wear Gauge |
| CN202083332U (en) * | 2011-03-17 | 2011-12-21 | 宁波永信汽车部件制造有限公司 | Ball concentricity measurement device for casing of ball pin chain |
| CN204514304U (en) * | 2015-03-23 | 2015-07-29 | 中国航空工业集团公司沈阳发动机设计研究所 | A kind of switching pin for angle displacement measurement |
| JP6043404B1 (en) * | 2015-05-26 | 2016-12-14 | ワン チュエイ−リウ | Molding auxiliary assembly, molding apparatus, and molding method |
| CN109443165A (en) * | 2018-12-29 | 2019-03-08 | 贵州高峰石油机械股份有限公司 | A kind of device and method of rapid survey abnormal shape stepped hole |
| CN220982207U (en) * | 2023-11-01 | 2024-05-17 | 湖北楚航电子科技有限公司 | Telescopic turntable structure and inner hole measuring device |
-
2024
- 2024-10-25 CN CN202411500239.5A patent/CN119197240B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1367093A (en) * | 1972-04-12 | 1974-09-18 | Hammond D C | Tranverse dimension gauges |
| US4686769A (en) * | 1985-07-08 | 1987-08-18 | Julius Blum Gesellschaft M.B.H. | Marking gauge for use in mounting hinges |
| US20090193907A1 (en) * | 2008-02-04 | 2009-08-06 | John Richard Wilbur | Roller Chain Wear Gauge |
| CN202083332U (en) * | 2011-03-17 | 2011-12-21 | 宁波永信汽车部件制造有限公司 | Ball concentricity measurement device for casing of ball pin chain |
| CN204514304U (en) * | 2015-03-23 | 2015-07-29 | 中国航空工业集团公司沈阳发动机设计研究所 | A kind of switching pin for angle displacement measurement |
| JP6043404B1 (en) * | 2015-05-26 | 2016-12-14 | ワン チュエイ−リウ | Molding auxiliary assembly, molding apparatus, and molding method |
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| CN119197240B (en) | 2025-12-16 |
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