CN214842975U - Rapid testing fixture device for key groove symmetry - Google Patents
Rapid testing fixture device for key groove symmetry Download PDFInfo
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- CN214842975U CN214842975U CN202120296571.XU CN202120296571U CN214842975U CN 214842975 U CN214842975 U CN 214842975U CN 202120296571 U CN202120296571 U CN 202120296571U CN 214842975 U CN214842975 U CN 214842975U
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Abstract
The utility model discloses a utensil device is examined fast to keyway symmetry, include: the outer wall of the mandrel is provided with a plane section, and the mandrel is positioned on the plane section and is provided with two pin holes; and one end of each of the two detection pins is respectively assembled and connected with the two pin holes, and the other end of each of the two detection pins is used for detecting the symmetry degree of the key groove. The utility model discloses can improve production detection efficiency at the production site, reduce the detection cost, be favorable to the quality control of production site.
Description
Technical Field
The utility model relates to a keyway symmetry measuring equipment's technical field especially relates to a keyway symmetry examines a device fast.
Background
In the prior art, key slots are arranged in shaft holes of cast iron products such as a coupler, an impeller and a rotor, the key slots have symmetry requirements relative to the shaft holes according to assembly requirements, the width of each key slot is generally within 20mm due to different structures and assembly requirements of the products, and the symmetry requirements relative to the shaft holes are generally between 0.05mm and 0.10 mm.
After the shaft hole and the key groove in the shaft hole are machined in a production field, whether the symmetry degree of the key groove relative to the shaft hole meets the design requirement of a drawing or not can not be immediately detected, and generally, three coordinates are firstly sent for detection and verification, so that the production efficiency is influenced, effective three-coordinate detection resources can be occupied, the detection cost is relatively high, and the quality control of the production field is not facilitated, therefore, a detection device for rapidly detecting the symmetry degree of the key groove in the shaft hole is urgently needed in the production field.
Disclosure of Invention
The problem that the symmetry detection of the existing key groove is low in efficiency and high in cost is solved, and the key groove symmetry rapid detection tool device can improve production detection efficiency in a production field, reduce detection cost and is beneficial to quality control of the production field.
The specific technical scheme is as follows:
a quick gauge device of keyway symmetry includes:
the outer wall of the mandrel is provided with a plane section, and the mandrel is positioned on the plane section and is provided with two pin holes;
and one end of each of the two detection pins is respectively assembled and connected with the two pin holes, and the other end of each of the two detection pins is used for detecting the symmetry degree of the key groove.
The quick key groove symmetry checking fixture device is characterized in that the outer wall of the mandrel is further provided with two first outer circle sections and a second outer circle section, the side edges of the two first outer circle sections and the side edge of the second outer circle section respectively extend to two sides of the plane section, and the two pin holes are respectively opposite to the two first outer circle sections.
The rapid gauge device for the symmetry degree of the key groove is characterized in that the diameter of the first outer circle section is larger than that of the second outer circle section.
In the rapid key groove symmetry checking fixture device, the two first outer circle sections are respectively located at two ends of the mandrel, and the second outer circle section is located in the middle of the mandrel.
In the rapid key groove symmetry checking fixture device, the two first outer circle sections are symmetrically located at two ends of the second outer circle section respectively.
In the rapid detection device for the symmetry degree of the key groove, the two pin holes are symmetrically arranged at the two ends of the mandrel.
The quick key groove symmetry checking fixture device is characterized in that a handle is arranged at one end of the mandrel.
The key groove symmetry degree rapid detection tool device comprises a detection pin and a detection pin, wherein the detection pin comprises a positioning portion and a detection portion which are connected with each other, the positioning portion is connected with the pin hole in an assembling mode, and the detection portion is used for detecting the symmetry degree of the key groove.
The keyway symmetry rapid gauge device is characterized in that the outer diameter of the detection part is larger than that of the positioning part.
Foretell keyway symmetry examines a device fast, wherein, the periphery at the both ends of dabber, each detect the both ends of round pin and all be the chamfer setting.
Compared with the prior art, the technical scheme has the positive effects that:
the utility model discloses can improve production detection efficiency at the production site, reduce the detection cost, be favorable to the quality control of production site.
Drawings
FIG. 1 is a sectional view of a rapid checking fixture device for keyway symmetry of the present invention;
FIG. 2 is a side view of the rapid key slot symmetry checking fixture apparatus of the present invention;
in the drawings: 1. a mandrel; 2. a detection pin; 3. a planar section; 4. a pin hole; 5. a first outer circle segment; 6. a second outer circle section; 7. a handle; 8. a positioning part; 9. a detection unit.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and specific embodiments, but the present invention is not limited thereto.
Fig. 1 is the utility model relates to a cross-sectional view of utensil device is examined fast to keyway symmetry, fig. 2 is the utility model relates to a side view of utensil device is examined fast to keyway symmetry, as shown in fig. 1 and fig. 2, the quick utensil device of examining of keyway symmetry of a preferred embodiment is shown, include: dabber 1 and two detection round pins 2, have a plane section 3 on the outer wall of dabber 1, dabber 1 is located the plane section and has two pinhole 4, and two one end that detect round pin 2 are respectively with two pinhole 4 be assembled between/be connected, and the other end that detects round pin 2 is used for detecting the symmetry of keyway.
Further, as a preferred embodiment, the outer wall of the mandrel 1 further has two first outer circle sections 5 and a second outer circle section 6, the side edges of the two first outer circle sections 5 and the side edges of the second outer circle section 6 respectively extend to two sides of the plane section 3, and the two pin holes 4 respectively face the two first outer circle sections 5.
Preferably, the first excircle section 5 of the mandrel 1 is a guide section of the checking fixture, and the second excircle section 6 is arranged for detection convenience.
Further, as a preferred embodiment, the diameter of the first outer circular section 5 is larger than the diameter of the second outer circular section 6.
Preferably, the difference between the diameter of the first outer circular section 5 and the diameter of the second outer circular section 6 is greater than 1 mm.
Preferably, the contact range of the guide section and the shaft hole in which the key groove is located is reduced, so that the detection device can rapidly move within the length range of the shaft hole during detection, and the detection speed is improved.
Further, as a preferred embodiment, two first outer circle sections 5 are respectively located at two ends of the mandrel 1, and a second outer circle section 6 is located at the middle of the mandrel 1.
Further, as a preferred embodiment, the two first outer circle segments 5 are symmetrically located at two ends of the second outer circle segment 6.
Further, as a preferred embodiment, two pin holes are symmetrically located at two ends of the mandrel 1.
Preferably, the pin hole on the mandrel 1 is used for subsequently installing the detection pin 2, the pin hole 4 is located on the plane section 3 and vertically penetrates through the plane section 3, the pin hole 4 has a symmetry requirement relative to the first outer circle section 5, the symmetry requirement is that the detection part of the final detection pin 2 has a symmetry requirement relative to the first outer circle section 5 of the mandrel 1, and specific numerical values can be obtained by looking up a related measuring tool design manual.
Preferably, in order to reduce the weight of the mandrel 1, the mandrel 1 may be provided with a hollow structure.
Further, as a preferred embodiment, a handle 7 is provided at one end of the mandrel 1.
Further, as a preferred embodiment, each detection pin 2 includes a positioning portion 8 and a detection portion 9 connected to each other, the positioning portion 8 is assembled with the pin hole 4, and the detection portion 9 is used for detecting the symmetry degree of the key slot.
Preferably, the locating portion 8 is provided for subsequent assembly with the pin hole 4 in the mandrel 1.
Preferably, the detecting unit 9 is used for detecting the symmetry of the key groove in the following.
Preferably, the detecting portion 9 of the detecting pin 2 is required to be coaxial with the positioning portion 8 of the detecting pin 2 within Φ 0.003 mm.
The above is merely an example of the preferred embodiments of the present invention, and the embodiments and the protection scope of the present invention are not limited thereby.
The utility model discloses still have following embodiment on above-mentioned basis:
in a further embodiment of the present invention, please continue to refer to fig. 1 and fig. 2, the outer diameter of the detecting portion is larger than the outer diameter of the positioning portion.
The utility model discloses a further embodiment, the periphery at the both ends of dabber 1, each detect the both ends of round pin 2 and all be the chamfer setting. Preferably, the operation is convenient for inspection.
Preferably, the detection pin 2 is in interference fit with the pin hole 4.
Preferably, the detection pin 2 is assembled in the pin hole 4 of the mandrel 1, the fit tolerance of the pin and the hole is H7/n6 interference fit, and the detection part of the detection pin 2 is a cylindrical surface of a circular boss exposed out of the mandrel 1 after being assembled. The nominal diameter size of the cylindrical surface of the detection pin 2 is the maximum physical size of a key slot required on a product, and the dimensional tolerance of the cylindrical surface of the detection pin 2 can be calculated by checking a related measuring tool design manual. The guide part of the symmetry rapid detection device is the first excircle section of the mandrel 1, the shaft hole where the guide part and the product key groove are located is a detection matching surface, the guide part and the product key groove are required to be in clearance fit, a matched tolerance band is H7/g6, and according to the requirement of the symmetry precision level of a product, a tolerance matching H7/H7 with higher matching precision can be selected.
The utility model discloses guaranteeing under the qualified prerequisite of shaft hole and keyway size, if two on the detection device detect round pin 2 can pass through the whole length within range of keyway in the shaft hole smoothly, just judge as the symmetry is qualified.
The utility model discloses can improve production detection efficiency at the production site, reduce the detection cost, be favorable to the quality control of production site.
The above description is only an example of the preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and those skilled in the art should be able to realize the equivalent alternatives and obvious variations of the present invention.
Claims (10)
1. The utility model provides a utensil device is examined fast to keyway symmetry which characterized in that includes:
the outer wall of the mandrel is provided with a plane section, and the mandrel is positioned on the plane section and is provided with two pin holes;
and one end of each of the two detection pins is respectively assembled and connected with the two pin holes, and the other end of each of the two detection pins is used for detecting the symmetry degree of the key groove.
2. The rapid key groove symmetry checking fixture device according to claim 1, wherein the outer wall of the mandrel further has two first outer circle sections and a second outer circle section, the side edges of the two first outer circle sections and the side edge of the second outer circle section extend to two sides of the plane section respectively, and the two pin holes are respectively opposite to the two first outer circle sections.
3. The keyway symmetry quick gauge device of claim 2, wherein the diameter of the first outside circular segment is greater than the diameter of the second outside circular segment.
4. The rapid key slot symmetry gauge device according to claim 3, wherein the two first outer circle sections are respectively located at two ends of the spindle, and the second outer circle section is located in the middle of the spindle.
5. The rapid key groove symmetry checking fixture device according to claim 4, wherein the two first outer circle sections are symmetrically located at two ends of the second outer circle section respectively.
6. The rapid key slot symmetry gauge device according to claim 1, wherein the two pin holes are symmetrically located at two ends of the spindle.
7. The rapid key slot symmetry inspection device according to claim 1, wherein a handle is provided at one end of the spindle.
8. The rapid key groove symmetry degree checking fixture device according to claim 1, wherein each detection pin comprises a positioning portion and a detection portion, the positioning portion and the detection portion are connected with each other, the positioning portion is assembled with the pin hole, and the detection portion is used for detecting the symmetry degree of the key groove.
9. The rapid key slot symmetry gauge device according to claim 8, wherein the outer diameter of the detection portion is larger than the outer diameter of the positioning portion.
10. The rapid key slot symmetry checking fixture device according to claim 1, wherein the peripheries of the two ends of the spindle and the two ends of each detection pin are chamfered.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120296571.XU CN214842975U (en) | 2021-02-02 | 2021-02-02 | Rapid testing fixture device for key groove symmetry |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120296571.XU CN214842975U (en) | 2021-02-02 | 2021-02-02 | Rapid testing fixture device for key groove symmetry |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214842975U true CN214842975U (en) | 2021-11-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120296571.XU Active CN214842975U (en) | 2021-02-02 | 2021-02-02 | Rapid testing fixture device for key groove symmetry |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214842975U (en) |
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2021
- 2021-02-02 CN CN202120296571.XU patent/CN214842975U/en active Active
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