CN110500940B - Clamp for measuring flatness around hole - Google Patents
Clamp for measuring flatness around hole Download PDFInfo
- Publication number
- CN110500940B CN110500940B CN201810470610.6A CN201810470610A CN110500940B CN 110500940 B CN110500940 B CN 110500940B CN 201810470610 A CN201810470610 A CN 201810470610A CN 110500940 B CN110500940 B CN 110500940B
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- CN
- China
- Prior art keywords
- hole
- support arm
- flatness
- measuring
- gauge head
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- 238000001514 detection method Methods 0.000 claims abstract description 26
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 238000005259 measurement Methods 0.000 description 4
- 238000000105 evaporative light scattering detection Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005096 rolling process 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
- G01B5/0025—Measuring of vehicle parts
-
- 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
- G01B5/28—Measuring arrangements characterised by the use of mechanical techniques for measuring roughness or irregularity of surfaces
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The invention discloses a flatness clamp around a measuring hole, which comprises a base, wherein one side wall of the base is a smooth horizontal plane, a measuring head and a locating pin are respectively penetrated in a measuring head hole and a locating pin hole, a hollow rotating cavity is formed in the base, the measuring head hole is communicated with the rotating cavity, a detecting hole is communicated with the rotating cavity, a first support arm and a second support arm are respectively outwards protruded and integrally formed on a rotating body, the first support arm and the second support arm are respectively arranged towards the measuring head hole and the detecting hole, one end of the measuring head is exposed out of the measuring head hole, the other end of the measuring head is abutted against the first support arm, and a detecting head of a dial indicator passes through the detecting hole and is abutted against the second support arm. The invention has simple structure and low cost, is more convenient and quicker to operate by the linkage of the dial indicator and the connecting rod mechanism, can improve the accuracy of measured values, and realizes the rapid detection of the flatness of parts in a large batch.
Description
Technical Field
The invention relates to an automobile workpiece detection tool, in particular to a clamp for measuring flatness around a hole.
Background
The flatness error refers to the line value distance between the measured actual surface and the ideal plane, or the flatness error value expressed by the line value is converted by measuring the relative height difference of a plurality of points on the actual surface.
In the existing automobile parts, parts such as a wiper supporting plate and the like usually need to be checked for flatness, the production batch of the parts is very large, and the existing measurement technology generally adopts CMM detection equipment, but the detection equipment is complex to operate, has the problems of high structural cost and low detection speed, and is unfavorable for mass detection.
In view of the above, there is a need for a flatness detecting device that has a simple structure, a smart design, convenient operation, and accurate and rapid measurement.
Disclosure of Invention
The invention aims to solve the technical problems of complex structure, higher cost and low measurement speed of the traditional flatness detection device.
In order to solve the technical problem, the technical scheme adopted by the invention is to provide a flatness fixture around a measuring hole, the flatness fixture comprises a base, one side wall of the base is a smooth horizontal plane, the horizontal plane is a reference plane for detection, a measuring head hole and a positioning pin hole which are parallel to each other are respectively formed in the reference plane, a measuring head and a positioning pin are respectively arranged in the measuring head hole in a penetrating manner, a hollow rotating cavity is formed in the base, the measuring head hole is communicated with the rotating cavity, a step surface which is perpendicular to the reference plane is integrally formed in the base, a detecting hole is formed in the step surface, the detecting hole is communicated with the rotating cavity, the detecting hole is perpendicular to the measuring head hole, a rotating body is rotationally arranged in the rotating cavity, a first support arm and a second support arm which are respectively outwards protruded and integrally formed in the rotating body, the first support arm and the second support arm are respectively arranged towards the measuring head hole and the detecting hole, one end of the measuring head is arranged in a penetrating manner, and the other end of the measuring head is abutted against the first support arm and the second support arm passes through the detecting hole.
In the above scheme, the rotor is sheet structure, rotatory through-hole has been seted up at the center of rotor, wear to be equipped with the pivot in the rotatory through-hole, the both ends of pivot rotate respectively and set up on the relative inside wall of rotating the cavity.
In the above scheme, the base is further provided with a locking hole, the locking hole is perpendicular to and communicated with the detection hole, a locking countersunk head jackscrew is arranged in the locking hole in an adapting mode, and the locking countersunk head jackscrew abuts against the detection head of the dial indicator.
In the above scheme, the locating pin is in a two-stage shaft structure, a groove part is integrally formed between a large shaft and a small shaft of the two-stage shaft structure, the large shaft is exposed out of the locating pin hole, the small shaft is rotationally arranged in the locating pin hole, and a limiting hoop matched with the groove part is fixedly arranged in the locating pin hole.
In the above scheme, the abutting end surfaces of the first support arm and the second support arm are smooth continuous cambered surfaces.
In the above scheme, the directions of the first support arm and the second support arm are perpendicular to each other.
In the above scheme, the diameter of the locating pin is 9mm.
In the above aspect, the hardness of the rotor is HRC50 or more.
The invention has simple structure and low cost, is more convenient and quicker to operate by the linkage of the dial indicator and the connecting rod mechanism, can improve the accuracy of measured values, and realizes the rapid detection of the flatness of parts in a large batch.
Drawings
FIG. 1 is a schematic view of the external shape of the present invention;
FIG. 2 is a bottom view of FIG. 1;
FIG. 3 is an internal perspective view of the present invention;
FIG. 4 is a cross-sectional view taken along line A-A of FIG. 3;
FIG. 5 is a schematic illustration of the dial indicator of FIG. 4;
FIG. 6 is a schematic view of a rotor according to the present invention;
FIG. 7 is a middle cross-sectional view of a rotor according to the present invention;
FIG. 8 is a schematic view of a positioning pin according to the present invention;
Fig. 9 is a schematic view of the structure of the tested parts of the wiper support plate.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
As shown in fig. 1 to 9, the main structure of the clamp for measuring the flatness around the hole is a base 6, one side wall of the base 6 is a smooth horizontal plane, the horizontal plane is a reference plane for detection, a measuring head hole and a positioning pin hole which are parallel to each other are respectively formed in the reference plane, a measuring head 1 and a positioning pin 2 are respectively penetrated in the measuring head hole and the positioning pin hole, and the measuring head 1 is penetrated in the measuring head hole in a vertical sliding manner.
The locating pin 2 is in a double-stage shaft structure, a groove part 17 is integrally arranged between a large shaft 15 and a small shaft 16 of the double-stage shaft structure, the large shaft 15 is exposed out of the locating pin hole, the small shaft 16 is rotationally arranged in the locating pin hole, a limit hoop matched with the groove part 17 is fixedly arranged in the locating pin hole, so that a rotating shaft is fixed when the locating pin 2 rotates, and the diameter of the locating pin 2 is preferably 9mm.
The hollow rotating cavity 8 is formed in the base 6, the rotating body 3 is rotationally arranged in the rotating cavity 8, the rotating body 3 is of a sheet-shaped structure with a certain thickness, the hardness is higher than HRC50, the center of the rotating body 3 is provided with a rotating through hole 9, a rotating shaft 14 is arranged in the rotating through hole 9 in a penetrating mode, two ends of the rotating shaft 14 are respectively rotationally arranged on opposite inner side walls of the rotating cavity 8, and therefore the rotating body 3 can freely rotate around the rotating shaft 14 in the rotating cavity 8.
The rotating body 3 is respectively and outwards protruded and integrally formed with a first support arm 11 and a second support arm 12, a measuring head hole is communicated with the rotating cavity 8, a step surface 13 perpendicular to a reference plane is integrally formed on the base 6, a detection hole 10 is formed in the step surface 13, the detection hole 10 is communicated with the rotating cavity 8, the detection hole 10 is mutually perpendicular to the measuring head hole, the directions of the first support arm 11 and the second support arm 12 are mutually perpendicular and respectively arranged towards the measuring head hole and the detection hole 10, one end of the measuring head 1 is exposed out of the measuring head hole, the other end of the measuring head abuts against the first support arm 11, a detecting head of the dial indicator 5 penetrates through the detection hole 10 and abuts against the second support arm 12, and abutting end faces of the first support arm 11 and the second support arm 12 are smooth and continuous cambered surfaces. Therefore, a connecting rod mechanism which is propped against each other is formed among the measuring head 1, the rotating body 3 and the detecting head of the dial indicator 5, and the propped end surfaces are smooth and continuous cambered surfaces, so that continuous and stable change is ensured when rolling between the measuring heads, and the precision of measurement and the reduction error are ensured.
The measuring operation method of the invention comprises the following steps: firstly, the dial indicator 5 is calibrated, then the measured part 7 of the wiper support plate is placed on the base 6, the topmost phi 12mm through hole (namely the topmost hole in fig. 9) of the measured part 7 passes through the locating pin 2, at the moment, the measured surface of the measured part 7 is attached to the reference plane of the base 6 and presses the measuring head 1, then the measured part 7 continuously rotates around the locating pin 2, the upward and downward movement of the measuring head 1 and the rotation of the rotator 3 sequentially transmit the rotation to the detecting head of the dial indicator 5, the pointer of the dial indicator 5 also continuously deflects, and as the diameter of the locating pin 2 is set to be phi 9mm, the diameter of the hole of the measured part 7 is set to be phi 12mm, any point in the range of phi 18mm can be measured as long as the measured part 7 rotates around the locating pin 2, and finally, the difference between the maximum value and the minimum value of the pointer deflection of the dial indicator 5 is the measured value of the flatness.
Further preferably, the base 6 is further provided with a locking hole, the locking hole is vertical to and communicated with the detection hole 10, a locking countersunk head jackscrew 4 is arranged in the locking hole in an adapting mode, and the locking countersunk head jackscrew 4 abuts against the detection head of the dial indicator 5 when screwed in the locking hole, so that the locking countersunk head jackscrew is fixed in the vertical direction, and the detection stability is improved.
The error of the invention is less than 1/10 of the flatness tolerance by comparing with the CMM detection.
The invention has simple structure and low cost, is more convenient and quicker to operate by the linkage of the dial indicator and the connecting rod mechanism, can improve the accuracy of measured values, and realizes the rapid detection of the flatness of parts in a large batch.
The present invention is not limited to the above-mentioned preferred embodiments, and any person who can learn about the structural changes made under the teaching of the present invention can be within the scope of the present invention if the present invention has the same or similar technical solutions.
Claims (8)
1. The utility model provides a flatness fixture around measuring hole, its characterized in that, includes the base, the one side lateral wall of base is smooth horizontal plane, the horizontal plane is the reference plane that detects, set up gauge head hole and locating pin hole that is parallel to each other on the reference plane respectively, wear to be equipped with gauge head and locating pin in gauge head hole and the locating pin hole respectively, just the gauge head slides and wears to establish in the gauge head hole, set up hollow rotation cavity in the base, the gauge head hole with rotate the cavity intercommunication, integrative being equipped with on the base perpendicular to reference plane's step face, set up the detection hole on the step face, the detection hole with rotate the cavity intercommunication, the detection hole with the gauge head hole is perpendicular, rotate in the cavity and rotate and be equipped with a rotor, outwards outstanding and integrated into one piece have first support arm and second support arm respectively, first support arm and second support arm are worn to establish in the gauge head hole with the detection hole is arranged, the one end of gauge head is in the gauge head, the other end supports in the first support arm and the detection head supports the second support arm.
2. The flatness fixture around a measuring hole of claim 1, wherein the rotator is of a sheet-like structure, a rotation through hole is provided in the center of the rotator, a rotation shaft is provided in the rotation through hole in a penetrating manner, and two ends of the rotation shaft are respectively rotatably provided on opposite inner side walls of the rotation cavity.
3. The flatness fixture around a measuring hole of claim 1, wherein the base is further provided with a locking hole, the locking hole is perpendicular to and communicated with the detecting hole, a locking countersunk head jackscrew is arranged in the locking hole in an adapting mode, and the locking countersunk head jackscrew abuts against the detecting head of the dial indicator.
4. The flatness fixture around a measuring hole according to claim 1, wherein the positioning pin is in a two-stage shaft structure, a groove part is integrally formed between a large shaft and a small shaft of the two-stage shaft structure, the large shaft is exposed out of the positioning pin hole, the small shaft is rotatably arranged in the positioning pin hole, and a limiting hoop matched with the groove part is fixedly arranged in the positioning pin hole.
5. A flatness fixture around a measuring hole as claimed in claim 1, characterized in that the abutment end surfaces of the first and second arms are smooth continuous cambered surfaces.
6. A flatness fixture around a measuring hole as claimed in claim 1, wherein the first arm and the second arm are oriented perpendicular to each other.
7. A flatness fixture around a measuring hole as claimed in claim 1, characterized in that the diameter of the locating pin is 9mm.
8. A jig for measuring flatness around a hole as claimed in claim 1, wherein the hardness of the rotator is HRC50 or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810470610.6A CN110500940B (en) | 2018-05-17 | 2018-05-17 | Clamp for measuring flatness around hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810470610.6A CN110500940B (en) | 2018-05-17 | 2018-05-17 | Clamp for measuring flatness around hole |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110500940A CN110500940A (en) | 2019-11-26 |
| CN110500940B true CN110500940B (en) | 2024-06-07 |
Family
ID=68584315
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810470610.6A Active CN110500940B (en) | 2018-05-17 | 2018-05-17 | Clamp for measuring flatness around hole |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110500940B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102679852A (en) * | 2012-05-07 | 2012-09-19 | 合肥科振实业发展有限公司 | Portable flatness detector |
| CN103697800A (en) * | 2013-12-30 | 2014-04-02 | 海宁市新艺机电有限公司 | Bottom surface planeness detection device of ring-hole workpiece |
| CN203964849U (en) * | 2014-05-28 | 2014-11-26 | 安徽天利动力股份有限公司 | A kind of cubing that detects oil sump oil discharge screw hole machined surface flatness |
| CN105091863A (en) * | 2014-05-04 | 2015-11-25 | 沈阳透平机械股份有限公司 | Levelness detector for bore and detection method therefor |
| JP2017053788A (en) * | 2015-09-11 | 2017-03-16 | 公益財団法人鉄道総合技術研究所 | Rail end surface flatness measuring jig |
| CN207007085U (en) * | 2017-04-10 | 2018-02-13 | 浙江亚太机电股份有限公司 | Hand-held detects endoporus end face plane degree cubing |
| CN208505222U (en) * | 2018-05-17 | 2019-02-15 | 吉林博仁科技股份有限公司 | A kind of fixture of measured hole surrounding level degree |
-
2018
- 2018-05-17 CN CN201810470610.6A patent/CN110500940B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102679852A (en) * | 2012-05-07 | 2012-09-19 | 合肥科振实业发展有限公司 | Portable flatness detector |
| CN103697800A (en) * | 2013-12-30 | 2014-04-02 | 海宁市新艺机电有限公司 | Bottom surface planeness detection device of ring-hole workpiece |
| CN105091863A (en) * | 2014-05-04 | 2015-11-25 | 沈阳透平机械股份有限公司 | Levelness detector for bore and detection method therefor |
| CN203964849U (en) * | 2014-05-28 | 2014-11-26 | 安徽天利动力股份有限公司 | A kind of cubing that detects oil sump oil discharge screw hole machined surface flatness |
| JP2017053788A (en) * | 2015-09-11 | 2017-03-16 | 公益財団法人鉄道総合技術研究所 | Rail end surface flatness measuring jig |
| CN207007085U (en) * | 2017-04-10 | 2018-02-13 | 浙江亚太机电股份有限公司 | Hand-held detects endoporus end face plane degree cubing |
| CN208505222U (en) * | 2018-05-17 | 2019-02-15 | 吉林博仁科技股份有限公司 | A kind of fixture of measured hole surrounding level degree |
Non-Patent Citations (1)
| Title |
|---|
| 台阶形圆柱长度测量具;楼毓庭;《机械制造》;第40页 * |
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| Publication number | Publication date |
|---|---|
| CN110500940A (en) | 2019-11-26 |
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