CN110681978A - Friction stir welding stirring pin length measuring device - Google Patents
Friction stir welding stirring pin length measuring device Download PDFInfo
- Publication number
- CN110681978A CN110681978A CN201910948899.2A CN201910948899A CN110681978A CN 110681978 A CN110681978 A CN 110681978A CN 201910948899 A CN201910948899 A CN 201910948899A CN 110681978 A CN110681978 A CN 110681978A
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- CN
- China
- Prior art keywords
- fixed sleeve
- cylindrical hole
- spring
- baffle
- thick cylindrical
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/12—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding
- B23K20/122—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding
- B23K20/1245—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding characterised by the apparatus
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/26—Auxiliary equipment
-
- 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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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
Friction stir welding stirring pin length measuring device relates to friction stir welding stirring head state aassessment auxiliary device technical field, and it includes amesdial, fixed sleeve, spring and baffle. The invention has the beneficial effects that: the matching of the fixed sleeve and the auxiliary positioning scale marks is utilized to ensure that the stirring pin can be coaxially inserted into the fixed sleeve, and the matching of the dial indicator and the baffle is utilized to realize the accurate measurement of the length of the stirring pin so as to achieve the accurate evaluation of the state of the stirring head; the working efficiency is improved, the influence of human factors on measurement is reduced, and the measurement precision is improved.
Description
Technical Field
The invention relates to the technical field of auxiliary devices for evaluating states of stirring heads of friction stir welding, in particular to a length measuring device for a stirring pin of friction stir welding.
Background
The friction stir welding is an advanced aluminum alloy welding process method, has the technical advantages of good welding joint quality, high welding efficiency, green and environment-friendly production process and the like, and is widely applied to manufacturing of aluminum alloy car bodies of railway vehicles. As shown in figures 1 and 2, the concrete structural shapes of two stirring heads are provided, the stirring head 5 comprises a shaft shoulder 5-1 and a stirring pin 5-2 fixedly connected with the shaft shoulder, the stirring head 5 is a core device of the friction stir welding process,the original length L of the pin 5-2 of the pin 5 with the welding operation0The length of the stirring pin 5-2 is a main factor influencing the stability of the quality of a friction stir welding joint because of continuous abrasion and gradual shortening, and the length measurement of the stirring pin 5-2 has very important significance for the evaluation of the state of the stirring pin and the guarantee of the product quality; when the length of the stirring pin 5-2 is measured to be less than or equal to the minimum length allowed by the technical requirements, the stirring head 5 needs to be replaced. At present, the length of the stirring pin 5-2 is mainly measured by a handheld vernier caliper, but because the shaft shoulder 5-1 and the stirring pin 5-2 of different stirring heads 5 are different in shape, irregular and complex in structure, when the length of the stirring pin is measured by the vernier caliper, the accuracy and precision of a measuring result cannot meet the measuring requirements due to the influence of human factors, and the measuring efficiency is low.
Disclosure of Invention
The invention provides a length measuring device for a stirring pin of friction stir welding, aiming at solving the technical problems that when a vernier caliper is used for measuring the length of the stirring pin, the accuracy and precision of a measuring result cannot meet the measuring requirements, and the measuring efficiency is low.
The technical scheme adopted by the invention for solving the technical problem is as follows:
the length measuring device of the stirring pin of the friction stir welding comprises a dial indicator, a fixed sleeve, a spring and a baffle plate; the whole fixed sleeve is of a T-shaped sleeve structure, a thick cylindrical hole is axially arranged at the front part of the fixed sleeve, the aperture of the thick cylindrical hole is larger than the maximum outer diameter of the stirring needle and smaller than the outer diameter of the shaft shoulder of the stirring head, a thin cylindrical hole is axially arranged at the rear part of the fixed sleeve, the thick cylindrical hole is communicated with the thin cylindrical hole, and the thick cylindrical hole and the thin cylindrical hole are coaxially arranged with the fixed sleeve; the front end face of the fixed sleeve is provided with at least three auxiliary positioning scale marks, the at least three auxiliary positioning scale marks are arranged along the radial direction of the front end face of the fixed sleeve, and each auxiliary positioning scale mark is the same;
the spring is axially placed in the thick cylindrical hole, one end of the spring is fixedly connected with the bottom surface of the thick cylindrical hole, and the other end of the spring is fixedly connected with the inner end surface of the baffle; the diameter of the baffle is equal to the aperture of the thick cylindrical hole, the baffle is placed at the front end part of the thick cylindrical hole, and when the spring is in a free state, the outer end face of the baffle is coplanar with the front end face of the fixed sleeve;
the measuring end of the dial indicator is inserted into the spring along the axial direction of the fixing sleeve, and the fixed end of the dial indicator is inserted into the thin cylindrical hole along the axial direction of the fixing sleeve and is fixedly connected with the fixing sleeve; the digital display end of the dial indicator is exposed outside the rear part of the fixed sleeve, when the display data of the digital display end is zero, the spring is in a free state, and the measuring end is in contact with the inner end face of the baffle.
The invention has the beneficial effects that: the matching of the fixed sleeve and the auxiliary positioning scale marks is utilized to ensure that the stirring pin can be coaxially inserted into the fixed sleeve, and the matching of the dial indicator and the baffle is utilized to realize the accurate measurement of the length of the stirring pin so as to achieve the accurate evaluation of the state of the stirring head; the working efficiency is improved, the influence of human factors on measurement is reduced, and the measurement precision is improved.
Drawings
FIG. 1 is a schematic illustration of a stir head for friction stir welding.
FIG. 2 is a schematic diagram of another alternate pin tool for friction stir welding.
FIG. 3 is a schematic structural view of a length measuring apparatus for a pin for friction stir welding according to the present invention.
Fig. 4 is a schematic diagram of the right-side structure of fig. 3.
Fig. 5 is a schematic structural diagram of the dial indicator of the present invention.
Fig. 6 is a schematic structural view of the fixing sleeve in the present invention.
FIG. 7 is a schematic diagram of an application of the apparatus for measuring the length of a pin in friction stir welding according to the present invention.
Fig. 8 is a schematic diagram of the right-side view structure of fig. 7.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 3 to 6, the length measuring apparatus for a friction stir welding pin of the present invention includes: the device comprises a dial indicator 1, a fixed sleeve 2, a spring 3 and a baffle 4; the whole fixed sleeve 2 is of a T-shaped sleeve structure, a thick cylindrical hole 2-1 is axially arranged at the front part of the fixed sleeve 2, the aperture of the thick cylindrical hole 2-1 is larger than the maximum outer diameter of the stirring needle 5-2 and smaller than the outer diameter of the shaft shoulder 5-1 of the stirring head, a thin cylindrical hole 2-2 is axially arranged at the rear part, and the thick cylindrical hole 2-1 is communicated with the thin cylindrical hole 2-2 and is coaxially arranged with the fixed sleeve 2; four auxiliary positioning scale marks 2-4 are arranged on the front end face of the fixed sleeve 2, the four auxiliary positioning scale marks 2-4 are arranged along the radial direction of the front end face of the fixed sleeve 2, and the four auxiliary positioning scale marks 2-4 are the same.
The spring 3 is axially arranged in the thick cylindrical hole 2-1, one end of the spring 3 is fixedly connected with the bottom surface of the thick cylindrical hole 2-1, and the other end of the spring 3 is fixedly connected with the inner end surface of the baffle 4; the diameter of the baffle 4 is equal to the aperture of the thick cylindrical hole 2-1, the baffle 4 is placed at the front end part of the thick cylindrical hole 2-1, and when the spring 3 is in a free state, the outer end face of the baffle 4 is coplanar with the front end face of the fixed sleeve 2.
The measuring end 1-3 of the dial indicator 1 is inserted into the spring 3 along the axial direction of the fixed sleeve 2, and the fixed end 1-2 of the dial indicator 1 is inserted into the thin cylindrical hole 2-2 along the axial direction of the fixed sleeve 2 and fixedly connected with the fixed sleeve 2; the digital display end 1-1 of the dial indicator 1 is exposed outside the rear part of the fixed sleeve 2, when the display data of the digital display end 1-1 is zero, the spring 3 is in a free state, and the measuring end 1-3 is in contact with the inner end face of the baffle 4. The dial indicator 1 can be a digital display dial indicator with model number 543 plus 471B produced by Sanfeng corporation.
As shown in fig. 7 and 8, when the length measuring device for the stirring pin of friction stir welding is used, the stirring pin 5-2 of the stirring head 5 is inserted into the fixing sleeve 2 along the axial direction of the fixing sleeve 2, and the coaxial insertion of the stirring pin 5-2 is ensured by four auxiliary positioning scale lines 2-4 in the insertion process; with the increase of the insertion depth of the stirring pin 5-2, the baffle 4 presses the measuring end 1-3 of the dial indicator 1 into the fixed end 1-2, corresponding data are displayed on the digital display end 1-1, when the stirring pin 5-2 is completely inserted into the fixed sleeve 2, the lower end face of the shaft shoulder 5-1 is clamped on the front end face of the fixed sleeve 2, and the data displayed by the digital display end 1-1 is the length of the stirring pin 5-2; after the measurement is finished, the stirring pin 5-2 is pulled out of the fixed sleeve 2, and the baffle 4 returns to the original position under the action of the restoring force of the spring 3 to prepare for the next measurement.
In practical application, recording an initial measured value of the stirring pin 5-2 when the stirring pin is used for the first time, and calculating to obtain a minimum measured value according to the maximum abrasion loss allowed by technical requirements; and then measuring the residual length of the stirring pin 5-2 before each welding by using the measuring device of the invention, and increasing the measuring frequency when the measured value is close to the minimum measured value of the technical requirement so as to ensure that the moment when the measured value reaches the minimum measured value of the technical requirement is found in time, wherein at the moment, the welding joint with stable and reliable quality cannot be obtained if the stirring head 5 is continuously used for welding and manufacturing. According to the technical requirements, the welding operator should replace the stirring head 5 at this time.
Claims (1)
1. The length measuring device for the stirring pin of the friction stir welding is characterized by comprising a dial indicator (1), a fixed sleeve (2), a spring (3) and a baffle (4);
the whole fixed sleeve (2) is of a T-shaped sleeve structure, a thick cylindrical hole (2-1) is formed in the front portion of the fixed sleeve (2) along the axial direction, the aperture of the thick cylindrical hole (2-1) is larger than the maximum outer diameter of the stirring needle (5-2) and smaller than the outer diameter of a shaft shoulder (5-1) of the stirring head, a thin cylindrical hole (2-2) is formed in the rear portion of the fixed sleeve along the axial direction, the thick cylindrical hole (2-1) is communicated with the thin cylindrical hole (2-2), and the thick cylindrical hole (2-1) and the thin cylindrical hole (2-2) are coaxially arranged with the fixed sleeve; the front end face of the fixed sleeve (2) is provided with at least three auxiliary positioning scale marks (2-4), the at least three auxiliary positioning scale marks (2-4) are arranged along the radial direction of the front end face of the fixed sleeve (2), and each auxiliary positioning scale mark (2-4) is the same;
the spring (3) is axially placed in the thick cylindrical hole (2-1), one end of the spring (3) is fixedly connected with the bottom surface of the thick cylindrical hole (2-1), and the other end of the spring (3) is fixedly connected with the inner end surface of the baffle plate (4); the diameter of the baffle (4) is equal to the aperture of the thick cylindrical hole (2-1), the baffle (4) is placed at the front end part of the thick cylindrical hole (2-1), and when the spring (3) is in a free state, the outer end face of the baffle (4) is coplanar with the front end face of the fixed sleeve (2);
the measuring end (1-3) of the dial indicator (1) is inserted into the spring (3) along the axial direction of the fixed sleeve (2), and the fixed end (1-2) of the dial indicator (1) is inserted into the thin cylindrical hole (2-2) along the axial direction of the fixed sleeve (2) and is fixedly connected with the fixed sleeve (2); the digital display end (1-1) of the dial indicator (1) is exposed at the outer side of the rear part of the fixed sleeve (2), when the display data of the digital display end (1-1) is zero, the spring (3) is in a free state, and the measuring end (1-3) is in contact with the inner end face of the baffle (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910948899.2A CN110681978A (en) | 2019-10-08 | 2019-10-08 | Friction stir welding stirring pin length measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910948899.2A CN110681978A (en) | 2019-10-08 | 2019-10-08 | Friction stir welding stirring pin length measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110681978A true CN110681978A (en) | 2020-01-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910948899.2A Pending CN110681978A (en) | 2019-10-08 | 2019-10-08 | Friction stir welding stirring pin length measuring device |
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| CN (1) | CN110681978A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5170569A (en) * | 1991-12-02 | 1992-12-15 | Anderson James R | Device for measuring dimensions to calculate the head space for guns |
| CN201740496U (en) * | 2010-06-29 | 2011-02-09 | 山东浩信机械有限公司 | Depth detection device |
| CN204085391U (en) * | 2014-09-30 | 2015-01-07 | 芜湖东大汽车工业有限公司 | The height of water pump water seal detects frock |
| CN104422362A (en) * | 2013-08-28 | 2015-03-18 | 常州西利合金工具有限公司 | Boss height measuring device |
| CN105157522A (en) * | 2015-07-22 | 2015-12-16 | 贵州航太精密制造有限公司 | Measuring device for measuring height of conical surface of countersunk screw |
| CN106441031A (en) * | 2016-10-20 | 2017-02-22 | 中核（天津）机械有限公司 | Step hole depth measuring device |
| CN109596034A (en) * | 2018-12-18 | 2019-04-09 | 台州工交机械有限公司 | A kind of ball pin depth check tool |
-
2019
- 2019-10-08 CN CN201910948899.2A patent/CN110681978A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5170569A (en) * | 1991-12-02 | 1992-12-15 | Anderson James R | Device for measuring dimensions to calculate the head space for guns |
| CN201740496U (en) * | 2010-06-29 | 2011-02-09 | 山东浩信机械有限公司 | Depth detection device |
| CN104422362A (en) * | 2013-08-28 | 2015-03-18 | 常州西利合金工具有限公司 | Boss height measuring device |
| CN204085391U (en) * | 2014-09-30 | 2015-01-07 | 芜湖东大汽车工业有限公司 | The height of water pump water seal detects frock |
| CN105157522A (en) * | 2015-07-22 | 2015-12-16 | 贵州航太精密制造有限公司 | Measuring device for measuring height of conical surface of countersunk screw |
| CN106441031A (en) * | 2016-10-20 | 2017-02-22 | 中核（天津）机械有限公司 | Step hole depth measuring device |
| CN109596034A (en) * | 2018-12-18 | 2019-04-09 | 台州工交机械有限公司 | A kind of ball pin depth check tool |
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Application publication date: 20200114 |