CN108444359B - Device for measuring position tolerance of sheet metal part nut - Google Patents
Device for measuring position tolerance of sheet metal part nut Download PDFInfo
- Publication number
- CN108444359B CN108444359B CN201810353656.XA CN201810353656A CN108444359B CN 108444359 B CN108444359 B CN 108444359B CN 201810353656 A CN201810353656 A CN 201810353656A CN 108444359 B CN108444359 B CN 108444359B
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- measuring
- hole
- nut
- pin body
- sheet metal
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- 239000002184 metal Substances 0.000 title claims abstract description 38
- 238000001514 detection method Methods 0.000 claims abstract description 67
- 238000005259 measurement Methods 0.000 claims abstract description 16
- 239000011295 pitch Substances 0.000 claims description 6
- 230000001105 regulatory effect Effects 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012827 research and development Methods 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- 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
- G01B5/0002—Arrangements for supporting, fixing or guiding the measuring instrument or the object to be measured
- G01B5/0004—Supports
-
- 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
- G01B5/0025—Measuring of vehicle parts
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The invention discloses a device for measuring position tolerance of a sheet metal part nut, which comprises a mounting seat, a guide sleeve, a detection pin body, a supporting locking pin, a measuring block and a locking nut detection pin, wherein the mounting seat is provided with a plurality of guide pins; the support section of the mounting seat is provided with a guide through hole, a guide sleeve is sleeved in the guide through hole in an interference fit mode, and a jackscrew is used for fastening the guide sleeve on the mounting seat; the detection pin body passes through the guide sleeve sleeved in the guide through hole in a clearance fit manner, and is fastened on the mounting seat by the support locking pin; the detection pin body is connected with a measurement block in clearance fit, and the detection pin body and the measurement block can slide and rotate and cannot shake. The device for measuring the position tolerance of the sheet metal part nut can be used for better managing the product quality and is more accurate in measurement.
Description
Technical Field
The invention relates to a measuring mechanism of an automobile sheet metal part gauge, in particular to a device for measuring position tolerance of a sheet metal part nut.
Background
In order to better manage the accuracy of the car body, the nuts welded on the car sheet metal parts generally need to be measured. The manner of measurement is also different at different stages. In the research and development stage, quantitative measurement is needed, so that the precision of the clamp is conveniently guided and adjusted, and a better product is produced. In the mass production stage, quick passing detection is needed, and normal production is ensured. The quick passing performance of the mass production stage is basically consistent with the detection mode designed by each detection tool manufacturer. In the research and development stage, the measurement means used by each gauge manufacturer are different, and the conventional common mode is scribing detection, but the mode is simple and convenient, but the operation measurement error is larger, and the measurement error is more than 0.3 mm.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention aims to provide a device for measuring the position tolerance of a sheet metal part nut, which can solve the problems of inconvenient detection and inaccurate detection.
The invention adopts the following technical scheme:
The device for measuring the position tolerance of the sheet metal part nut comprises a mounting seat, a guide sleeve, a detection pin body, a supporting locking pin, a measuring block and a locking nut detection pin; the support section of the mounting seat is provided with a guide through hole, the guide sleeve is sleeved in the guide through hole in an interference fit mode, and the guide sleeve is fastened on the mounting seat by using a jackscrew; the detection pin body passes through the guide sleeve sleeved in the guide through hole in a clearance fit manner, and is fastened on the mounting seat by the support locking pin; the detection pin body is connected with a measurement block in clearance fit, and the detection pin body and the measurement block can slide and rotate and cannot shake.
Preferably, the mounting seat comprises a mounting section and a supporting section, the mounting section and the supporting section are connected into a whole, a fixing hole is formed in the mounting section, and the supporting section is provided with the guide through hole.
Preferably, the mounting section and the support section of the mounting seat are integrally formed in an L-shape or in a straight line.
Preferably, the detection pin body is a three-section step shaft comprising a pin body tail part, a pin body and a pin body head part, and the periphery of the pin body tail part is in the shape of an adjusting nut with the largest diameter; the middle part of the pin body passes through the guide sleeve, and a measuring block is sleeved on the pin body close to the head part of the pin body; the pin head diameter is the smallest.
Preferably, the measuring block comprises a main body block, a measuring column and a measuring locking pin; the main body block is a plate with a large through hole and a small through hole on the plate surface, the measuring column is inserted in the small through hole and fastened by jackscrews, and the detection pin body is sleeved in the large through hole and fastened by a measuring locking pin.
Preferably, the lock nut detection pin comprises an embedding part and a measuring part, wherein the embedding part is a blind hole with a corresponding diameter, which is arranged at the shaft end of the detection pin body in an embedding way along a central shaft at one end surface of the lock nut detection pin; the measuring part is a detection thread section which is connected with the embedded part in a relative way, and the outer thread of the thread section of the measuring part is equal to the thread pitch of the thread of the internal thread of the nut to be detected.
Preferably, the distance between the measuring column of the measuring block and the outer periphery of the fitting portion of the lock nut detecting pin is 1mm to 5mm.
Preferably, the distance is 3mm.
Preferably, the lock nut detection pin is in various specifications of different screw threads and screw pitches, and the lock nut detection pin in various specifications corresponds to the specifications of sheet metal nuts in various types to be detected.
Preferably, a through hole is formed in the guide sleeve, the through hole corresponds to a through hole formed in the side wall of the mounting seat and used for the supporting locking pin to pass through, and one end of the supporting locking pin passes through the through hole in the mounting seat and the through hole in the guide sleeve and abuts against the outer wall surface of the detection pin body to tightly prop against the detection pin body.
Preferably, the tolerance of the clearance fit is g6/H7. The tolerance fit allows the shaft and bore between the fits to slide, rotate, but not rock.
Compared with the prior art, the invention has the beneficial effects that: the device for measuring the position tolerance of the sheet metal part nut can better manage the product quality and is more accurate in measurement, and the measuring error of the sheet metal part nut is controlled within 0.1 mm.
Drawings
FIG. 1 is a schematic view of a device for measuring position tolerance of sheet metal part nuts;
FIG. 2 is a schematic diagram of the structure of a measuring block of a device for measuring the position tolerance of a sheet metal part nut;
fig. 3 is a cross-sectional view at A-A in fig. 1.
In the figure: 1. a mounting base; 11. a mounting section; 12. a support section; 2. a guide sleeve; 3. detecting a pin body; 31. the tail part of the pin body; 32. a pin body; 33. a pin head; 4. supporting the locking pin; 5. a measuring block; 51. a body block; 52. a measuring column; 53. measuring a locking pin; 6. a lock nut detection pin; 61. a fitting portion; 62. a measuring section; 7. sheet metal nuts.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When a component is considered to be "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1-3, a device for measuring position tolerance of sheet metal part nuts is composed of a mounting seat 1, a guide sleeve 2, a detection pin body 3, a supporting locking pin 4, a measuring block 5 and a locking nut detection pin 6.
The guide sleeve 2 is tightly matched with the mounting seat 1 and then is propped up by the jackscrew to be connected into a whole.
The supporting locking pin 4 is mounted on the mounting base 1 by means of threads and has a main function of locking the detecting pin body 3.
The guide sleeve 2 is provided with a through hole on the side surface, through which the supporting locking pin 4 must pass, or else the detecting pin body 3 cannot be pushed. The detection pin body 3 and the guide sleeve 2 are in clearance fit (g 6/H7 fit tolerance).
The measuring block 5 and the detecting pin body 3 are in clearance fit (g 6/H7 fit tolerance) and can slide and rotate relatively but cannot shake.
The teeth of the part of the lock nut detection pin 6 screwed into the sheet metal nut 7 are required to be consistent with the tooth distance of the sheet metal nut 7.
Referring to fig. 2, the measuring block 5 is composed of a main body block 51, a measuring column 52 and a measuring locking pin 53, wherein the measuring column 52 is tightly matched with the main body block 51, and then is propped up by a jackscrew, and the measuring locking pin 53 is mounted on the main body block 51 by means of threads.
Referring to fig. 3, the theoretical design distance of the measuring column 52 on the measuring block 5 and the lock nut detecting pin 6 is 1-5mm, preferably 3mm.
The specific embodiment of the device is as follows:
The device for measuring the position tolerance of the sheet metal part nut comprises a mounting seat 1, a guide sleeve 2, a detection pin body 3, a supporting locking pin 4, a measuring block 5 and a locking nut detection pin 6; the support section of the mounting seat 1 is provided with a guide through hole, the guide sleeve 2 is sleeved in the guide through hole in an interference fit mode, and the guide sleeve 2 is fastened on the mounting seat 1 by using a jackscrew; the detection pin body 3 passes through the guide sleeve 2 sleeved in the guide through hole in a clearance fit manner, and the detection pin body 3 is fastened on the mounting seat 1 by the support locking pin 4; the detection pin body 3 is also connected with a measurement block 5 in clearance fit, and the detection pin body 3 and the measurement block 5 can slide and rotate without shaking.
The mounting seat 1 comprises a mounting section 11 and a supporting section 12, wherein the mounting section and the supporting section are connected into a whole, a fixing hole is formed in the mounting section 11, and the supporting section 12 is provided with a guide through hole.
The mounting section and the support section are integrally formed in an L-shape or a straight line shape.
The detecting pin body 3 is a three-section step shaft comprising a pin body tail 31, a pin body 32 and a pin body head 33, and the pin body tail is in the shape of an adjusting nut with the largest peripheral diameter; the middle part of the pin body 32 passes through the guide sleeve 2, and the measuring block 5 is sleeved on the pin body 32 near the head 33 of the pin body; the pin head 33 has a minimum diameter.
The measuring block 5 comprises a main body block 51, a measuring column 52 and a measuring locking pin 53; the main body block 51 is a plate with a large through hole and a small through hole on the plate surface, the measuring column 52 is inserted in the small through hole and fastened by jackscrews, and the detecting pin body 3 is sleeved in the large through hole and fastened by measuring locking pins.
The lock nut detecting pin 6 comprises an embedding part 61 and a measuring part 62, wherein the embedding part 61 is a blind hole with a corresponding diameter, which is arranged at the shaft end of the detecting pin body 3 in an embedding way along a central shaft at one end surface of the lock nut detecting pin; the measuring part 62 is a detection thread section which is connected with the jogged part 61 in a relative way, and the outer thread of the thread section of the measuring part 62 is equal to the thread pitch of the inner thread of the nut to be detected.
The distance between the measuring post 52 of the measuring block 5 and the outer periphery of the fitting portion 61 of the lock nut detecting pin 6 is 1mm to 5mm.
The distance was 3mm.
The lock nut detection pin 6 is in various specifications of different screw teeth and screw pitches, and the lock nut detection pin 6 in various specifications corresponds to the specifications of sheet metal nuts in various types to be detected.
The guide sleeve 2 is provided with a through hole, the through hole corresponds to a through hole which is arranged on the side wall of the mounting seat 1 and is used for the supporting locking pin 4 to pass through, and one end of the supporting locking pin 4 passes through the through hole on the mounting seat 1 and the through hole on the guide sleeve 2 and is abutted against the outer wall surface of the detection pin body 3 to tightly prop up the detection pin body.
The fit tolerance of the clearance fit is g6/H7. The tolerance fit allows the shaft and bore between the fits to slide, rotate, but not rock.
In addition, a measurement method using the device is briefly described as follows:
A. During mass production measurement
The quick passing inspection can be carried out by using the detection pin body 3, and the detection end of the detection pin body 3 is converted and designed according to the position tolerance of the sheet metal nut.
B. During the development stage
The measuring block 5 and the lock nut detecting pin 6 are matched to detect the specific value of the position degree of the sheet metal nut 7 so as to indicate the correction and the modification of the welding fixture.
When the locking nut detection pin 6 is used, the locking nut detection pin 6 is screwed into the sheet metal nut 7 to be detected, the measuring block 5 is sleeved on the detection pin body 3, the detection pin body 3 is propped against the locking nut detection pin 6, and then the detection pin body 3 is locked by the supporting locking pin 4. And pushing the measuring block 5 until the measuring column 52 contacts the surface of the sheet metal part to stop, accurately measuring the distance between the measuring column 52 on the measuring block 5 and the locking nut detection pin 6 by using a feeler gauge, and finally converting the deviation of the position degree of the sheet metal nut 7.
Since the measuring block 5 can be arbitrarily rotated on the detecting pin body 3, the positional deviations in all directions of the sheet metal nut 7 to be detected can be measured.
The design focus of this device lies in:
1. the detection pin body 3 and the guide sleeve 2 are in clearance fit (g 6/H7 fit tolerance), and can relatively slide and rotate but cannot shake;
2. the measuring block 5 and the detecting pin body 3 are in clearance fit (g 6/H7 fit tolerance) and can relatively slide and rotate but cannot shake;
3. The measuring end of the lock nut detecting pin 6 must be manufactured with high precision.
Through the measuring device, the position degree of the nuts on the sheet metal part in all directions can be conveniently and accurately measured, the measuring error can be controlled within 0.1mm, and the operation precision is improved.
It will be apparent to those skilled in the art from this disclosure that various other changes and modifications can be made which are within the scope of the invention as defined in the appended claims.
Claims (10)
1. The utility model provides a measure sheet metal component nut position tolerance's device which characterized in that: the device comprises a mounting seat, a guide sleeve, a detection pin body, a supporting locking pin, a measuring block and a locking nut detection pin; the support section of the mounting seat is provided with a guide through hole, the guide sleeve is sleeved in the guide through hole in an interference fit mode, and the guide sleeve is fastened on the mounting seat by using a jackscrew; the detection pin body passes through the guide sleeve sleeved in the guide through hole in a clearance fit manner, and is fastened on the mounting seat by the support locking pin; the detection pin body is also connected with a measurement block in clearance fit, and the detection pin body and the measurement block can slide and rotate but cannot shake;
the detecting pin body is a three-section step shaft comprising a pin body tail part, a pin body and a pin body head part, the periphery of the pin body tail part is in a regulating nut shape with the largest diameter, the middle part of the pin body passes through the guide sleeve, and a measuring block is sleeved at the position of the pin body close to the pin body head part; the pin head diameter is the smallest.
2. A device for measuring sheet metal part nut position tolerances as defined in claim 1, wherein: the mounting seat comprises a mounting section and a supporting section, wherein the mounting section and the supporting section are connected into a whole, a fixing hole is formed in the mounting section, and the supporting section is provided with the guide through hole.
3. A device for measuring sheet metal part nut position tolerances as defined in claim 2, wherein: the mounting section and the support section are integrally formed in an L-shape or a straight line shape.
4. A device for measuring sheet metal part nut position tolerances as defined in claim 1, wherein: the measuring block comprises a main body block, a measuring column and a measuring locking pin; the main body block is a plate with a large through hole and a small through hole on the plate surface, the measuring column is inserted in the small through hole and fastened by jackscrews, and the detection pin body is sleeved in the large through hole and fastened by a measuring locking pin.
5. The apparatus for measuring positional tolerances of a sheet metal nut of claim 4, wherein: the lock nut detection pin comprises an embedding part and a measuring part, wherein the embedding part is a blind hole with a corresponding diameter, which is arranged at the shaft end of the detection pin body in an embedding way along a central shaft at one end surface of the lock nut detection pin; the measuring part is a detection thread section which is connected with the embedded part in a relative way, and the outer thread of the thread section of the measuring part is equal to the thread pitch of the thread of the internal thread of the nut to be detected.
6. The apparatus for measuring positional tolerances of a sheet metal nut of claim 5, wherein: the distance between the measuring column of the measuring block and the outer periphery of the embedded part of the lock nut detecting pin is 1mm-5mm.
7. The apparatus for measuring positional tolerances of a sheet metal nut of claim 6, wherein: the distance is 3mm.
8. The apparatus for measuring positional tolerances of a sheet metal nut of claim 5, wherein: the lock nut detection pin is in various specifications of different screw threads and screw pitches, and the lock nut detection pin in various specifications corresponds to the specifications of sheet metal nuts in various types to be detected.
9. A device for measuring sheet metal part nut position tolerances as defined in claim 1, wherein: the guide sleeve is provided with a through hole, the through hole corresponds to a through hole which is arranged on the side wall of the mounting seat and is used for the supporting locking pin to pass through, and one end of the supporting locking pin passes through the through hole on the mounting seat and the through hole on the guide sleeve and is abutted against the outer wall surface of the detection pin body to tightly prop against the detection pin body.
10. A device for measuring sheet metal part nut position tolerances as defined in claim 1, wherein: the fit tolerance of the clearance fit is g6/H7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810353656.XA CN108444359B (en) | 2018-04-19 | 2018-04-19 | Device for measuring position tolerance of sheet metal part nut |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810353656.XA CN108444359B (en) | 2018-04-19 | 2018-04-19 | Device for measuring position tolerance of sheet metal part nut |
Publications (2)
| Publication Number | Publication Date |
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| CN108444359A CN108444359A (en) | 2018-08-24 |
| CN108444359B true CN108444359B (en) | 2024-07-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810353656.XA Active CN108444359B (en) | 2018-04-19 | 2018-04-19 | Device for measuring position tolerance of sheet metal part nut |
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| Country | Link |
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| CN (1) | CN108444359B (en) |
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| CN203254091U (en) * | 2013-03-30 | 2013-10-30 | 长城汽车股份有限公司 | Tool structure shared by clamp and inspection tool of stamping part |
| CN208059732U (en) * | 2018-04-19 | 2018-11-06 | 广州宁武科技股份有限公司 | A kind of device measuring sheet metal component nut location tolerance |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US4524524A (en) * | 1983-10-05 | 1985-06-25 | Gagemaker, Inc. | Gage for measuring diameters |
| JP2008026014A (en) * | 2006-07-18 | 2008-02-07 | Nsk Ltd | Spline outer diameter measuring instrument |
| CN201828220U (en) * | 2010-09-15 | 2011-05-11 | 陕西柴油机重工有限公司 | Measuring tool for detecting position tolerance of external thread |
| CN202024703U (en) * | 2011-04-14 | 2011-11-02 | 福州福享汽车工业有限公司 | Detection pin used for detecting position of sheet metal hole and nut of automobile sheet metal comppnent |
| JP2012237699A (en) * | 2011-05-13 | 2012-12-06 | Kenzo Yamamoto | Tolerance measuring instrument |
| CN202747957U (en) * | 2012-03-04 | 2013-02-20 | 青岛多彩机电设计有限公司 | Portable vehicle body frame checking fixture |
| CN202734746U (en) * | 2012-07-11 | 2013-02-13 | 浙江轻机离心机制造有限公司 | Non-shaft part hole positioning coaxiality detection device |
| CN103234430A (en) * | 2013-04-15 | 2013-08-07 | 启东万惠机械制造有限公司 | Shape and position tolerance detecting device for ring gears |
| CN204240879U (en) * | 2014-04-23 | 2015-04-01 | 台州市黄岩智佳汽车检具有限公司 | The hole position detecting mechanism of car bottom side longeron assembly checking tool |
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| CN204622034U (en) * | 2015-03-04 | 2015-09-09 | 上汽通用五菱汽车股份有限公司 | A kind of nut bore line pin |
| CN204924122U (en) * | 2015-05-05 | 2015-12-30 | 贵州航天工业学校 | Axle type part detection device |
| CN105091693B (en) * | 2015-05-18 | 2017-12-01 | 安徽江淮汽车集团股份有限公司 | A kind of welded nut position degree error measuring means |
| CN206056480U (en) * | 2016-08-15 | 2017-03-29 | 西安伊克赛尔汽车新技术有限公司 | Thread measurement instrument |
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- 2018-04-19 CN CN201810353656.XA patent/CN108444359B/en active Active
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| CN203254091U (en) * | 2013-03-30 | 2013-10-30 | 长城汽车股份有限公司 | Tool structure shared by clamp and inspection tool of stamping part |
| CN208059732U (en) * | 2018-04-19 | 2018-11-06 | 广州宁武科技股份有限公司 | A kind of device measuring sheet metal component nut location tolerance |
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