CN113386068B - Positioning and clamping mechanism for visual detection of piston hole - Google Patents

Positioning and clamping mechanism for visual detection of piston hole Download PDF

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Publication number
CN113386068B
CN113386068B CN202110875395.XA CN202110875395A CN113386068B CN 113386068 B CN113386068 B CN 113386068B CN 202110875395 A CN202110875395 A CN 202110875395A CN 113386068 B CN113386068 B CN 113386068B
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China
Prior art keywords
piston
positioning
plate
base plate
supporting frame
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CN202110875395.XA
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CN113386068A (en
Inventor
魏亮亮
彭思龙
汪雪林
顾庆毅
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Suzhou Zhongke Whole Elephant Intelligent Technology Co ltd
Suzhou Zhongke Xingzhi Intelligent Technology Co ltd
Original Assignee
Suzhou Zhongke Whole Elephant Intelligent Technology Co ltd
Suzhou Zhongke Xingzhi Intelligent Technology Co ltd
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Priority to CN202110875395.XA priority Critical patent/CN113386068B/en
Publication of CN113386068A publication Critical patent/CN113386068A/en
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Publication of CN113386068B publication Critical patent/CN113386068B/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B11/00—Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E30/00—Energy generation of nuclear origin
    • Y02E30/30—Nuclear fission reactors

Abstract

The invention provides a positioning and clamping mechanism for visual detection of a piston hole, which comprises a positioning mechanism, a clamping mechanism and a rotary positioning mechanism, wherein the rotary positioning mechanism is arranged on the piston hole; the rotary positioning mechanism comprises a rotary plate and a fixed plate, and the rotary plate rotates on the upper surface of the fixed plate by taking the first shaft as a rotating shaft; the positioning mechanism comprises a positioning base plate and a supporting plate, the clamping mechanism comprises a hand wheel, a clamping screw and a screw supporting frame, the positioning base plate and the screw supporting frame which are arranged on two sides of the first shaft in a mutually opposite mode are respectively and fixedly connected to the upper part of the rotating plate, and the supporting plate is arranged between the positioning base plate and the screw supporting frame; one side of the positioning base plate, which is close to the screw rod supporting frame, is provided with a raised piston skirt positioning table, one end of the clamping screw rod, which is far away from the positioning base plate, is fixedly connected with a hand wheel, and the other end of the clamping screw rod penetrates through the screw rod supporting plate and extends out to one side of the positioning base plate. Through clamping and making the piston rotate along the primary axis, need not to remove the position of visual inspection system and can accomplish the detection of piston pin hole, convenient to use, the implementation cost is low, easy operation.

Description

Positioning and clamping mechanism for visual detection of piston hole
Technical Field
The invention relates to the technical field of tool fixtures, relates to positioning and clamping of a piston, and particularly relates to a positioning and clamping mechanism for visual detection of a piston hole.
Background
When the piston hole is detected, the piston needs to be positioned and clamped. Document CN111496566A discloses a steel piston clamp, which includes a fixing plate, a rear top plate, a fixing seat, a positioning plate, a front top plate, a core, a lower backing plate and a mounting platform; the lower backing plate is provided with a placing groove matched with the side edge of the steel piston, the front top plate is matched with the steel piston, the core is matched with the inner cavity of the steel piston and is installed in a matching way with the front top plate, and the core is provided with an auxiliary hole matched with the hole to be processed of the steel piston; the positioning plate is matched with the steel piston and is arranged on the front top plate, and a processing hole matched with the hole to be processed of the steel piston is formed in the positioning plate; the rear top plate is movably matched with the fixed seat, and the rear top plate is matched with the rear end of the steel piston; the rear top plate is provided with a fixing block matched with the fixing plate, and the fixing plate is provided with a fastening bolt matched with the fixing block. The core is matched with the inner cavity of the product and is provided with the hole, so that the drill bit can be protected from being broken and the processing precision is improved; the lower backing plate that anchor clamps were equipped with agrees with in order to improve the position degree of product drilling with the draft of product. However, the above-described technical solutions mainly fix the piston to fix the position of the bore hole, and it is difficult to determine or measure the position of the piston bore hole at the time of detection.
Document CN101695815B discloses a fixture mechanism for machining a piston pin hole of a compressor, which includes a base, a cam cavity is formed at the bottom of the base, a workpiece seat is formed at the upper part of the base, the workpiece seat has a workpiece cavity, and a cutter through hole is formed at the bottom of the workpiece cavity; the two ends of the cam shaft are rotatably arranged on the base, and the middle part of the cam shaft corresponds to the cam cavity; a camshaft operating device coupled to an end of the camshaft; the spherical pair lifting devices are correspondingly arranged on the workpiece seat of the base and correspond to two sides of the workpiece cavity, and the lower parts of the spherical pair lifting devices extend into the cam cavity to be in contact with the cam shaft and are actuated by the cam shaft; and the spherical pair pressing device is connected with the upper part of the spherical pair lifting device. The piston clamping device has the advantages that the reliable clamping of the piston is ensured, the piston is prevented from moving, the clamping damage of the piston and the deformation of the clamping part of the piston are avoided, and the operation is convenient. However, the above-mentioned technical solution is also a fixture for piston drilling, and cannot be applied to positioning and detecting a piston hole that has been already machined, and the implementation cost is high.
Disclosure of Invention
Aiming at the problem that the piston hole is difficult to measure in the prior art, the invention provides a positioning and clamping mechanism for visual detection of the piston hole.
A positioning and clamping mechanism for visual detection of a piston hole is characterized by comprising a positioning mechanism, a clamping mechanism and a rotary positioning mechanism;
the rotary positioning mechanism comprises a rotary plate and a fixed plate, and the rotary plate rotates on the upper surface of the fixed plate by taking a first shaft as a rotating shaft;
the positioning mechanism comprises a positioning base plate and a supporting plate, the clamping mechanism comprises a hand wheel, a clamping screw and a screw supporting frame, the positioning base plate and the screw supporting frame are respectively and fixedly connected to the upper part of the rotating plate, the positioning base plate and the screw supporting frame are arranged on two sides of the first shaft in a mutually opposite mode, and the supporting plate is arranged between the positioning base plate and the screw supporting frame;
the utility model discloses a screw rod support, including screw rod support, hand wheel, screw rod support, screw rod support, the location base plate be close to screw rod support one side is provided with bellied piston skirt location platform, press from both sides tight screw rod with screw rod support threaded connection, press from both sides tight screw rod and keep away from the one end fixed connection of location base plate the hand wheel, the other end passes the screw rod support to location base plate one side is stretched out.
Preferably, the shape of the piston skirt positioning table is matched with the shape of the inner wall of the end surface hole on one side of the piston skirt of the piston.
Further, the height of the piston skirt positioning boss protruding from the positioning base plate is smaller than the distance from the edge of the piston skirt to the inner wall of the piston pin hole.
The positioning mechanism further comprises a piston limiter, the piston limiter is arranged on one side, close to the screw rod supporting frame, of the positioning base plate, and the external shape of the piston limiter is matched with the internal shape of the piston skirt end face hole of the piston.
And a light inlet hole is formed in the bottom of the rotating plate, close to the first shaft.
The backup pad includes first backup pad, second backup pad, first backup pad top is provided with the V type groove that holds the piston, the quantity of second backup pad is two, two the second backup pad is followed the both sides of piston are right the piston is spacing.
The positioning base plate is close to one side of the screw rod supporting frame is further provided with an end face positioning boss, the shape of the end face positioning boss is matched with the external shape of a piston skirt of the piston, and the end face positioning boss protrudes from the positioning base plate and is smaller than the piston skirt positioning table.
The piston skirt positioning tables are arranged in two numbers, and the two piston skirt positioning tables are symmetrically arranged along the axial direction of the piston.
The upper surface of the fixed plate is provided with a flange, the flange is annular, the rotating plate is a circular plate, the circle center of the rotating plate is located on the first shaft, and the inner side of the flange is in clearance fit with the rotating plate.
The flange is provided with at least two gaps, and a preset included angle is formed between the at least two gaps and a connecting line of the circle centers of the rotating plates.
Optionally, a scale is provided on the flange.
The invention has the following beneficial effects: according to the invention, the piston can be accurately positioned and quickly clamped through the positioning mechanism and the clamping mechanism, the rotating plate rotates along the first axis, the detection of the piston pin hole can be completed without moving the position of the visual detection system, the use is convenient, and various visual schemes can be compatible; the structure is simple, and the implementation cost is low; the operation can be carried out manually, the device can be taken, put and rotated, the assembly is easy, and the operation is simple.
Drawings
FIG. 1 is a front view of one embodiment of a positioning and clamping mechanism for visual inspection of a piston bore.
Fig. 2 is a right side view of the embodiment shown in fig. 1.
Fig. 3 is a cross-sectional view C-C of the embodiment shown in fig. 1.
Fig. 4 is a top view of the embodiment shown in fig. 1.
In the figure: 101. a rotating plate; 102. a fixing plate; 103. a flange; 104. a notch; 105. a light inlet hole; 2. a positioning mechanism; 201. a hand wheel; 202. clamping the screw rod; 203. a first support plate; 204. a second support plate; 205. a screw rod support frame; 301. positioning the substrate; 302. an end face positioning boss; 303. a piston skirt positioning table; 304. a piston holder; 4. a piston; 401. a piston pin bore.
Detailed Description
The invention will be further described with reference to the following detailed description of the drawings.
It should be noted that, without conflict, any combination of the various embodiments or technical features described below may form a new embodiment.
As shown in fig. 1 to 4, a positioning and clamping mechanism for visual detection of a piston hole is characterized by comprising a positioning mechanism, a clamping mechanism and a rotary positioning mechanism;
the rotary positioning mechanism comprises a rotary plate 101 and a fixed plate 102, wherein the rotary plate 101 rotates on the upper surface of the fixed plate 102 by taking a first shaft as a rotating shaft;
the positioning mechanism comprises a positioning base plate 301 and a supporting plate, the clamping mechanism comprises a hand wheel 201, a clamping screw 202 and a screw supporting frame 205, the positioning base plate 301 and the screw supporting frame 205 are respectively and fixedly connected to the upper part of the rotating plate 101, the positioning base plate 301 and the screw supporting frame 205 are arranged on two sides of the first shaft in a mutually opposite mode, and the supporting plate is arranged between the positioning base plate 301 and the screw supporting frame 205;
the positioning base plate 301 is close to one side of the screw support frame 205 is provided with a raised piston skirt positioning table 303, the clamping screw 202 is in threaded connection with the screw support frame 205, one end of the clamping screw 202, which is far away from the positioning base plate 301, is fixedly connected with the hand wheel 201, and the other end of the clamping screw passes through the screw support frame 205 and extends out of one side of the positioning base plate 301.
Description of the principles of the invention: when needing to carry out visual inspection to the piston hole, place piston 4 in the backup pad and carry out preliminary location, make the piston top of piston 4 be close to screw rod support frame 205, the piston skirt of piston 4 is close to positioning substrate 301 one side, further makes piston skirt positioning table 303 stretch into in the terminal surface hole of piston skirt one side of piston 4. Subsequently, the hand wheel 201 is operated to rotate the clamping screw 202, so that the clamping screw 202 moves toward the positioning base plate 301 under the effect of the threaded connection with the screw support bracket 205, and then one end of the clamping screw 202 extending out of the screw support bracket 205 contacts and further abuts against the piston crown of the piston 4, so that the piston skirt of the piston 4 abuts against the positioning base plate 301. In this process, the piston pin hole 401 of the piston 4 is kept parallel to the first axis. At this time, the piston crown and the piston skirt of the piston 4 are clamped by the positioning mechanism and the clamping mechanism, and cannot rotate or move relative to the rotating plate 101. In this case, by rotating the rotating plate 101, the piston 4 can be rotated along the first axis, and the piston pin hole 401 can be visually detected from the upper side of the positioning and clamping mechanism.
According to the invention, the piston 4 can be accurately positioned and quickly clamped through the positioning mechanism and the clamping mechanism, the rotating plate 101 rotates along the first axis, the detection of the piston pin hole 401 can be completed without moving the position of the visual detection system, the use is convenient, and various visual schemes can be compatible; the structure is simple, and the implementation cost is low; the operation can be carried out manually, the device can be taken, placed and rotated, the assembly is easy, and the operation is simple.
Preferably, the shape of the piston skirt positioning table 303 matches the shape of the inner wall of the end surface hole on the piston skirt side of the piston 4, so that the piston skirt positioning table 303 can fix the circumferential position of the piston 4, and further facilitate the positioning of the piston 4.
Further, the height of the piston skirt positioning table 303 protruding from the positioning base plate 301 is smaller than the distance from the edge of the piston skirt to the inner wall of the piston pin hole 401, so that the piston skirt positioning table 303 is prevented from protruding from the inner side of the piston pin hole 401, and the piston skirt positioning table 303 is prevented from influencing the detection of the inner wall of the piston pin hole 401.
The positioning mechanism further comprises a piston stopper 304, the piston stopper 304 is arranged on one side, close to the screw supporting frame 205, of the positioning base plate 301, and the external shape of the piston stopper 304 is matched with the internal shape of the piston skirt end face hole of the piston 4. When positioning the piston 4, the positioning accuracy of the piston 4 is further improved by inserting the piston stopper 304 into the end surface hole of the piston 4.
Further, the length of the piston stopper 304 protruding from the positioning base plate 301 is adjusted according to the shape of the inside of the piston 4 so that the axis of the piston pin hole 401 coincides with the first axis, thereby facilitating visual inspection. The piston stopper 304 may be connected to the positioning base plate 301 by using a telescopic rod, or may be preset to a corresponding length according to the shape characteristics of the piston to be detected.
Alternatively, the rotary handwheel 201 may be replaced by other shapes that facilitate rotation of the clamping screw 202, such as a handle, a rocker arm, etc.
The present invention uses a support plate to support the piston 4. In addition, the piston 4 may be supported by a ring clamp, a circular hole, or the like that is fitted to the side surface of the piston 4.
As shown in fig. 3, the rotating plate 101 is provided with a light inlet 105 near the first axis at the bottom thereof, and when the light is insufficient, a light source is disposed at the light inlet 105, or external light is reflected to the inside of the through hole 305 through the light inlet 105, thereby providing supplementary light for visual inspection.
As shown in fig. 1 and 3, the support plates include a first support plate 203 and a second support plate 204, a V-shaped groove for accommodating the piston 4 is formed in the top of the first support plate 203, the number of the second support plates 204 is two, and the two second support plates 204 limit the piston 4 from two sides of the piston 4. In the present embodiment, the distance between the second support plates 204 matches the diameter of the piston skirt of the piston 4. Based on the concept of the present invention, the distance between the second supporting plates 204 can also be adjusted according to the shape of the piston 4, for example, the second supporting plates 204 are movably connected to the upper part of the rotating plate 1, so as to limit the piston 4 correspondingly.
As shown in fig. 3 and 4, an end surface positioning boss 302 is further disposed on a side of the positioning base plate 301 close to the screw supporting frame 205, and a height of the end surface positioning boss 302 protruding from the positioning base plate 301 is smaller than a height of the piston skirt positioning boss 303. Under the action of the clamping screw 202, the end face positioning boss 302 abuts against the piston skirt of the piston 4.
The end face positioning boss 302 has a shape matching the outer shape of the piston skirt of the piston 4. The end surface positioning boss 302 is matched with the outer shape of the piston skirt of the piston 4 and is abutted against the piston skirt, so that the rotation of the piston 4 is further prevented, and the positioning accuracy and reliability are further enhanced.
As shown in fig. 3, two skirt positioning tables 303 are provided, and the two skirt positioning tables 303 are arranged symmetrically in the axial direction of the piston 4. In the present embodiment, as shown in fig. 3 and 4, two skirt positioning tables 303 are provided in the vertical direction, and the piston 4 is fixed from two directions.
As shown in fig. 1 and 4, a flange 103 is disposed on an upper surface of the fixed plate 102, the flange 103 is annular, the rotating plate 101 is a circular plate, a center of the rotating plate 101 is located on the first axis, and an inner side of the flange 103 is in clearance fit with the rotating plate 101, so that the rotating plate 101 can rotate conveniently.
Further, as an alternative, a groove may be provided on the fixing plate 102 to accommodate the rotating plate 101, and the groove may be clearance-fitted to the rotating plate 101, so that the rotating plate can be conveniently rotated. Furthermore, it is also possible to provide thrust bearings on the contact surfaces of the fixed plate 102 and the rotating plate 101, or to provide annular slide rails on the fixed plate 102 and corresponding mechanisms on the rotating plate 101, so that the rotating plate 101 can rotate.
As shown in fig. 4, the flange 103 is provided with at least two notches 104, and a line connecting the at least two notches 104 and the center of the rotating plate 101 forms a preset included angle. The angle of the notch 104 facilitates intuitive adjustment of the rotation angle of the rotating plate 101. Further, the position of the rotating plate 101 can be determined more accurately by at least one of the foregoing ways by increasing the number of the notches 104 or decreasing the size of the notches 104.
According to the concept of the present invention, optionally, a scale may be further disposed on the flange 103, and the rotation angle of the rotating plate 101 is determined by the scale. It is contemplated that, in order to make the relationship between the position of the rotating plate 101 and the scale easier to obtain, a pointer or other indicating means may be provided on the rotating plate 101 or a mechanism that can rotate synchronously with the rotation of the rotating plate 101, so as to judge the position of the rotating plate 101 in conjunction with the scale.
The technical characteristics form the best embodiment of the invention, the best embodiment has stronger adaptability and best implementation effect, and unnecessary technical characteristics can be increased or decreased according to actual requirements to meet the requirements of different conditions.
Finally, it should be noted that the above-mentioned contents are only used for illustrating the technical solutions of the present invention, and not for limiting the protection scope of the present invention, and that the simple modifications or equivalent substitutions of the technical solutions of the present invention by those of ordinary skill in the art can be made without departing from the spirit and scope of the technical solutions of the present invention.

Claims (8)

1. A positioning and clamping mechanism for visual detection of a piston hole is characterized by comprising a positioning mechanism, a clamping mechanism and a rotary positioning mechanism;
the rotary positioning mechanism comprises a rotary plate and a fixed plate, and the rotary plate rotates on the upper surface of the fixed plate by taking a first shaft as a rotating shaft;
the positioning mechanism comprises a positioning base plate and a supporting plate, the clamping mechanism comprises a hand wheel, a clamping screw and a screw supporting frame, the positioning base plate and the screw supporting frame are respectively and fixedly connected to the upper part of the rotating plate, the positioning base plate and the screw supporting frame are arranged on two sides of the first shaft in a mutually opposite mode, and the supporting plate is arranged between the positioning base plate and the screw supporting frame;
a raised piston skirt positioning table is arranged on one side, close to the screw rod supporting frame, of the positioning base plate, the clamping screw rod is in threaded connection with the screw rod supporting frame, one end, far away from the positioning base plate, of the clamping screw rod is fixedly connected with the hand wheel, and the other end of the clamping screw rod penetrates through the screw rod supporting frame and extends out of one side of the positioning base plate;
the height of the piston skirt positioning platform, which is raised from the positioning base plate, is less than the distance from the edge of the piston skirt to the inner wall of the piston pin hole;
the positioning mechanism further comprises a piston limiter, the piston limiter is arranged on one side, close to the screw rod supporting frame, of the positioning base plate, the external shape of the piston limiter is matched with the internal shape of a piston skirt end face hole of the piston, and the piston limiter can be operated to abut against the piston skirt end face hole of the piston.
2. A locating clip mechanism for visual inspection of a piston bore as claimed in claim 1 wherein: the shape of the piston skirt positioning table is matched with the shape of the inner wall of the end surface hole at one side of the piston skirt of the piston.
3. A locating clip mechanism for visual inspection of a piston bore as claimed in claim 1 wherein: and a light inlet hole is formed in the bottom of the rotating plate, close to the first shaft.
4. A positional clamping mechanism for visual inspection of a piston bore according to claim 1, wherein: the backup pad includes first backup pad, second backup pad, first backup pad top is provided with the V type groove that holds the piston, the quantity of second backup pad is two, two the second backup pad is followed the both sides of piston are right the piston is spacing.
5. A positional clamping mechanism for visual inspection of a piston bore according to claim 1, wherein: the positioning base plate is close to one side of the screw rod supporting frame is further provided with an end face positioning boss, the shape of the end face positioning boss is matched with the external shape of a piston skirt of the piston, and the end face positioning boss protrudes from the positioning base plate and is smaller than the piston skirt positioning table.
6. A locating clip mechanism for visual inspection of a piston bore as claimed in claim 1 wherein: the upper surface of the fixed plate is provided with a flange, the flange is annular, the rotating plate is a circular plate, the circle center of the rotating plate is located on the first shaft, and the inner side of the flange is in clearance fit with the rotating plate.
7. A locating clip mechanism for visual inspection of a piston bore as claimed in claim 6 wherein: the flange is provided with at least two gaps, and a connecting line of the at least two gaps and the circle center of the rotating plate forms a preset included angle.
8. A positional clamping mechanism for visual inspection of a piston bore according to claim 6, wherein: the flange is provided with scales.
CN202110875395.XA 2021-07-30 2021-07-30 Positioning and clamping mechanism for visual detection of piston hole Active CN113386068B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110875395.XA CN113386068B (en) 2021-07-30 2021-07-30 Positioning and clamping mechanism for visual detection of piston hole

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110875395.XA CN113386068B (en) 2021-07-30 2021-07-30 Positioning and clamping mechanism for visual detection of piston hole

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CN113386068A CN113386068A (en) 2021-09-14
CN113386068B true CN113386068B (en) 2022-08-19

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Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5358149B2 (en) * 2008-09-26 2013-12-04 オークマ株式会社 Pallet clamp state monitoring device
CN203037193U (en) * 2012-12-18 2013-07-03 湖南江滨机器（集团）有限责任公司 Piston pin hole roundness measurement fixture
CN108007322A (en) * 2018-01-15 2018-05-08 山东振挺精工活塞有限公司 A kind of detection piston pin axis hole circularity, the piston clamping and fixing device and its characterization processes of cylindricity
CN210464423U (en) * 2019-09-30 2020-05-05 福州钜全汽车配件有限公司 Auxiliary positioning clamping device used before roundness measuring instrument in piston pin hole detection
CN210981120U (en) * 2019-12-06 2020-07-10 江苏叶琦机械有限公司 Gearbox shaft hole roundness detection device based on metal preparation

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