CN215524440U - Tool for measuring length of stirring pin - Google Patents
Tool for measuring length of stirring pin Download PDFInfo
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- CN215524440U CN215524440U CN202121302470.5U CN202121302470U CN215524440U CN 215524440 U CN215524440 U CN 215524440U CN 202121302470 U CN202121302470 U CN 202121302470U CN 215524440 U CN215524440 U CN 215524440U
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- length
- stirring pin
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Abstract
The utility model provides a stirring pin length measuring tool which comprises a measuring cylinder, a flat measuring head, a dial indicator, a positioning screw and a calibration block, wherein a hollow inner cavity is formed in the measuring cylinder; the measuring rod and the shaft sleeve of the dial indicator are inserted from an inner cavity opening at the upper end of the measuring cylinder, the measuring rod of the dial indicator is connected with the flat measuring head, and the positioning screw is in threaded connection with the threaded hole so as to fix the shaft sleeve on the dial indicator with the measuring cylinder; the calibration block is arranged at the lower end of the measuring cylinder and is abutted against the flat measuring head. The dial indicator is combined with the measuring cylinder, the flat measuring head, the positioning screw and the calibration block for use, so that the length of stirring needles in different shapes can be conveniently and quickly measured, the working efficiency is improved, and the measuring cost is reduced.
Description
Technical Field
The utility model belongs to the technical field of friction stir welding, and particularly relates to a tool for measuring the length of a stirring pin.
Background
Friction stir welding is a novel solid phase joining technique, and compared with the traditional welding method, the friction stir welding has the advantages of small heat input, small deformation, easy automation, environmental protection and the like, so that the friction stir welding is favored by the manufacturing fields of aerospace, national defense industry, rail transit and the like. The stirring pin is used as a core key technology of friction stir welding, and the material, structure and size of the stirring pin are important for influencing the formation and performance of a welding seam. Particularly, the length of the stirring pin is one of the most important factors of welding quality and post-welding yield. The Jipeng Fei is proposed in the research progress of the stirring head of the friction stir welding, and the size parameter of the stirring pin needs to be reasonably matched with the thickness of a workpiece plate during the friction stir welding. The effective length of the stirring pin during the friction stir welding refers to the distance from the end surface between the shafts to the end head of the stirring pin, and is generally accurate to 0.1. The back defects of incomplete penetration, incomplete fusion and the like of the workpiece are easily caused by insufficient length of the stirring pin, and the metal of the backing plate is fused into the welding line to form metal inclusions due to overlong length, so that the quality of the welding line is reduced. Because the end of the stirring pin has various shapes such as plane, sharp, spherical and irregular shapes, the length of the stirring pin cannot be directly measured by measuring tools with higher precision such as a vernier caliper, a micrometer and the like. The existing tools for measuring the length of the stirring pin are generally divided into two types, namely a measuring tool and a sensor, such as a vernier caliper and a laser range finder. The vernier caliper cannot be directly aligned with the end of the stirring pin during measurement, so that the measurement error is large; although the laser range finder can accurately measure the lengths of stirring pins with various structures, the laser range finder has high cost and relatively low efficiency and cannot be widely popularized. Therefore, the existing measuring tool cannot conveniently and quickly measure the effective length of the stirring pin.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects of the existing stirring pin length measuring tool, the utility model aims to solve the problem that the existing measuring tool cannot be directly used for measuring the length of the stirring pin due to different shapes of the stirring pins, and particularly provides the stirring pin length measuring tool.
In order to achieve the above purpose, the utility model adopts the technical scheme that: a stirring pin length measuring tool comprises a measuring cylinder, a flat measuring head, a dial indicator, a positioning screw and a calibration block, wherein a hollow inner cavity is formed in the measuring cylinder, a threaded hole is formed in the side wall of the upper end of the measuring cylinder, and the flat measuring head is arranged in the measuring cylinder and can axially slide in the inner cavity; the measuring rod and the shaft sleeve of the dial indicator are inserted from an inner cavity opening at the upper end of the measuring cylinder, the measuring rod of the dial indicator is connected with the flat measuring head, and the positioning screw is in threaded connection with the threaded hole so as to fix the shaft sleeve on the dial indicator with the measuring cylinder; the calibration block is arranged at the lower end of the measuring cylinder and is abutted against the flat measuring head.
Before measurement, after the dial indicator, the measuring cylinder, the dial indicator and the flat measuring head are fixed, the calibration block is attached to the lower end opening of the measuring cylinder to enable the flat measuring head to be flush with the opening surface of the lower end of the inner cavity, and the dial indicator is calibrated and zeroed; during measurement, the stirring pin is inserted into the shaft shoulder from the lower end opening of the measuring cylinder to be flush with the lower end opening surface of the inner cavity, and the reading of the dial indicator is the length of the stirring pin.
The hollow inner cavity is divided into three sections from top to bottom, wherein an upper section inner ring is matched with a shaft sleeve of the dial indicator, a middle section inner ring is matched with the stirring pin to be tested, and a lower section inner ring is matched with a shaft shoulder of the stirring pin to be tested; the positioning screw is arranged at the upper section of the hollow inner cavity, the flat measuring head is arranged at the middle section of the hollow inner cavity, and the calibration block is arranged at the lower section of the hollow inner cavity.
Specifically, the calibration device further comprises a second positioning screw, wherein a threaded hole is formed in the side wall of the lower section of the hollow inner cavity, and the second positioning screw is in threaded connection with the threaded hole to fix the calibration block and the measuring cylinder. When the zero setting is carried out, the calibration block is placed into the lower section of the hollow inner cavity and is abutted against the end wall of the inner cavity, the positioning screw II is screwed to fix the position of the calibration block, the calibration block enables the flat measuring head to be flush with the lower part of the middle section of the hollow inner cavity, and the dial indicator is set to zero; and then loosening the second positioning screw and taking out the calibration block, inserting the stirring pin to be tested into the lower end of the hollow inner cavity, pushing the flat measuring head to move upwards by the stirring pin until the shaft shoulder of the stirring pin is abutted against the end wall of the lower end of the hollow inner cavity, and reading of the dial indicator is the length of the stirring pin, namely the length of the stirring pin extending out of the shaft shoulder.
Specifically, the end wall of the lower section of the hollow inner cavity is provided with a magnetic material. The calibration block is made of metal, and is adsorbed on the lower section of the hollow inner cavity during zero setting, so that an operator can free two hands to adjust the device without pressing the calibration block with one hand, and the calibration block is prevented from falling off; during measurement, the stirring pin is inserted into the middle section, the shaft shoulder of the stirring pin is sucked at the lower section of the hollow inner cavity, the problem that the measurement is inaccurate due to tool shaking is avoided, and the assembly of the calibration block and the stirring head is more convenient and faster through magnetic suction.
Specifically, the sizes of the inner rings of the upper section, the middle section and the lower section of the hollow inner cavity are sequentially increased.
Specifically, the calibration block is circular or rectangular.
Specifically, the dial indicator is in communication connection with a friction stir welding system outside the dial indicator through a wireless transmitting-receiving device. After the dial indicator measures the length of the stirring pin, the dial indicator sends length data to the friction stir welding system, and an operator directly adjusts the elongation of the stirring pin according to the data, so that the cost of manpower and material resources is reduced, and the automation of friction stir welding is facilitated; specifically, a wireless transmitting button can be arranged on the dial indicator, the button is pressed after measurement, and the dial indicator sends data to the friction stir welding system.
Specifically, a radial positioning hole matched with the positioning screw is formed in the shaft sleeve of the dial indicator. When the tool is assembled, the positioning screw is screwed until the top end of the positioning screw is inserted into the positioning hole, so that the stability of the tool assembly is ensured, and the dial indicator is prevented from rotating.
Specifically, the calibration block can be in various shapes such as a circle and a rectangle.
Specifically, the number of the positioning screws is more than one.
The utility model has the beneficial effects that:
according to the stirring pin length measuring tool, the dial indicator is combined with the measuring cylinder, the flat measuring head, the positioning screw and the calibration block, so that the length of stirring pins in different shapes can be conveniently and quickly measured, the working efficiency is improved, and the measuring cost is reduced.
Drawings
FIG. 1 is a schematic view of a tool for measuring the length of a pin of a stirring pin provided by the utility model;
FIG. 2 is a schematic view showing a process of measuring the pin length of the probe in example 1;
FIGS. 3 and 4 are schematic views of a tool and a process for measuring the length of a pin of a stirring pin in embodiment 2;
wherein, 1 is a measuring cylinder, 2 is a flat measuring head, 3 is a dial indicator, 4 is a positioning screw, 5 is a calibration block, 6 is a stirring pin, 7 is a shaft shoulder, 8 is a second positioning screw, and 9 is a friction stir welding system.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Example 1
As shown in fig. 1, the present embodiment provides a tool for measuring a needle length of a stirring needle, including a measuring cylinder 1, a flat measuring head 2, a dial indicator 3, a positioning screw 4, and a calibration block 5, where the measuring cylinder 1 has a hollow inner cavity, a threaded hole is formed in a side wall of an upper end of the measuring cylinder 1, and the flat measuring head 2 is disposed in the measuring cylinder 1 and can axially slide in the inner cavity; the measuring rod of the dial indicator 3 is inserted from an inner cavity opening at the upper end of the measuring cylinder and then connected with the flat measuring head 2, a radial positioning hole matched with the positioning screw 4 is formed in the shaft sleeve, and the positioning screw 4 is screwed with the threaded hole to the end part to be inserted into the positioning hole so as to fix the dial indicator 3 on the measuring cylinder; the calibration block is arranged at the opening of the inner cavity at the lower end of the measuring cylinder and is abutted against the flat measuring head 2.
Before measurement, after the dial indicator, the measuring cylinder 1 and the flat measuring head 2 of the dial indicator 3 are fixed, the calibration block is attached to the lower end opening of the measuring cylinder 1 to enable the flat measuring head 2 to be flush with the opening surface at the lower end of the inner cavity, and the dial indicator 3 is calibrated and zeroed; during measurement, as shown in fig. 2, the stirring pin 6 is inserted into the opening at the lower end of the measuring cylinder 1 until the shaft shoulder 7 of the stirring pin 6 is flush with the opening surface at the lower end of the inner cavity, and the reading of the dial indicator 3 is the length of the stirring pin.
Example 2
As shown in fig. 3 and 4, in the embodiment, the tool is further improved, the hollow inner cavity of the measuring cylinder 1 is divided into three sections from top to bottom, wherein the upper section inner ring is adapted to the shaft sleeve of the dial indicator 3, the middle section inner ring is adapted to the stirring pin 6 to be measured, and the lower section inner ring is adapted to the shaft shoulder 7 of the stirring pin 6 to be measured; the positioning screw 4 is arranged at the upper section of the hollow inner cavity, the flat measuring head 2 is arranged at the middle section of the hollow inner cavity, and the calibration block 5 is arranged at the lower section of the hollow inner cavity; a second positioning screw 8 is additionally arranged, a threaded hole is formed in the side wall of the lower section of the hollow inner cavity, and the second positioning screw 8 is in threaded connection with the threaded hole so as to fix the calibration block 5 and the measuring cylinder 1; the dial indicator 3 is in communication connection with a stirring friction welding system 9 outside the dial indicator through a wireless transmitting-receiving device; and a ZERO setting button ZERO key and a wireless transmission button SEND key are arranged on the dial indicator 3.
When the ZERO setting is carried out, the calibration block is placed into the lower section of the hollow inner cavity and is abutted against the end wall of the inner cavity, the second positioning screw 8 is screwed to fix the position of the calibration block 5, the calibration block 5 enables the flat measuring head 2 to be flush with the lower part of the middle section of the hollow inner cavity, and the dial indicator 3 is set to ZERO by pressing a ZERO key; then loosen the second set screw 8 and take out the calibration block 5, insert the stirring pin 6 to be measured from the lower extreme of cavity inner chamber, the stirring pin 6 pushes the flat measuring head 2 to go up until the shaft shoulder 7 supports tightly with the end wall of cavity inner chamber lower extreme, the reading of percentage table 3 is the length of stirring pin 6 this moment, also be the length that the stirring pin 6 stretches out the shaft shoulder 7, press the SEND key after measuring, the percentage table 3 SENDs data to friction stir welding system 9, operating personnel directly adjusts the stirring pin 6 volume according to data, not only reduce manpower, material resources cost, but also be favorable to friction stir welding's automation
The above examples of the present invention are merely illustrative of the present invention and are not intended to limit the embodiments of the present invention. Variations and modifications in other variations will occur to those skilled in the art upon reading the foregoing description. Not all embodiments are exhaustive. All obvious changes and modifications of the present invention are within the scope of the present invention.
Claims (9)
1. The tool for measuring the needle length of the stirring needle is characterized by comprising a measuring cylinder, a flat measuring head, a dial indicator, a positioning screw and a calibration block, wherein a hollow inner cavity is formed in the measuring cylinder; the measuring rod and the shaft sleeve of the dial indicator are inserted from an inner cavity opening at the upper end of the measuring cylinder, the measuring rod of the dial indicator is connected with the flat measuring head, and the positioning screw is in threaded connection with the threaded hole so as to fix the shaft sleeve on the dial indicator with the measuring cylinder; the calibration block is arranged at the lower end of the measuring cylinder and is abutted against the flat measuring head.
2. The stirring pin length measuring tool according to claim 1, wherein the hollow inner cavity is divided into three sections from top to bottom, wherein an upper section inner ring is adapted to a shaft sleeve of the dial indicator, a middle section inner ring is adapted to a stirring pin to be measured, and a lower section inner ring is adapted to a shaft shoulder of the stirring pin to be measured; the positioning screw is arranged at the upper section of the hollow inner cavity, the flat measuring head is arranged at the middle section of the hollow inner cavity, and the calibration block is arranged at the lower section of the hollow inner cavity.
3. The stirring pin length measuring tool according to claim 2, further comprising a second positioning screw, wherein a threaded hole is formed in the side wall of the lower section of the hollow inner cavity, and the second positioning screw is in threaded connection with the threaded hole so as to fix the calibration block and the measuring cylinder.
4. The tool for measuring the length of the stirring needle according to claim 2, wherein a magnetic material is arranged on the end wall of the lower section of the hollow inner cavity.
5. The tool for measuring the length of the stirring needle according to claim 2, wherein the sizes of the inner rings of the upper section, the middle section and the lower section of the hollow inner cavity are sequentially increased.
6. The tool for measuring the length of the stirring pin needle according to claim 1, wherein the calibration block is circular or rectangular.
7. The tool for measuring the length of the stirring pin needle according to claim 1, wherein the dial indicator is in communication connection with a friction stir welding system outside the dial indicator through a wireless transmitting-receiving device.
8. The stirring pin length measuring tool according to claim 1, wherein a radial positioning hole matched with the positioning screw is formed in a shaft sleeve of the dial indicator.
9. The tool for measuring the needle length of the stirring needle according to claim 1, wherein the measuring rod is connected with the flat measuring head through a screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121302470.5U CN215524440U (en) | 2021-06-11 | 2021-06-11 | Tool for measuring length of stirring pin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121302470.5U CN215524440U (en) | 2021-06-11 | 2021-06-11 | Tool for measuring length of stirring pin |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215524440U true CN215524440U (en) | 2022-01-14 |
Family
ID=79807826
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121302470.5U Active CN215524440U (en) | 2021-06-11 | 2021-06-11 | Tool for measuring length of stirring pin |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215524440U (en) |
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2021
- 2021-06-11 CN CN202121302470.5U patent/CN215524440U/en active Active
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