CN220170097U - Micrometer for measuring depth of groove - Google Patents
Micrometer for measuring depth of groove Download PDFInfo
- Publication number
- CN220170097U CN220170097U CN202321602068.8U CN202321602068U CN220170097U CN 220170097 U CN220170097 U CN 220170097U CN 202321602068 U CN202321602068 U CN 202321602068U CN 220170097 U CN220170097 U CN 220170097U
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- measuring
- interchangeable
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- groove
- block
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- 238000005259 measurement Methods 0.000 claims description 9
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
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- Length-Measuring Instruments Using Mechanical Means (AREA)
Abstract
The utility model discloses a micrometer for measuring the depth of a groove, which comprises a scale drum and a measuring rod, wherein a positive rotation force measuring piece is arranged on the scale drum, an interchangeable measuring block is coaxially arranged on the measuring rod, and two axial end surfaces of the interchangeable measuring block are measuring surfaces with the requirements of dimensional accuracy and flatness; the scale drum is also provided with a reverse rotation force measuring piece; the interchangeable measuring block is coaxially arranged on the interchangeable measuring rod, and the interchangeable measuring rod is coaxially arranged on the measuring rod; the interchangeable measuring block and the interchangeable measuring rod are fastened on the measuring rod by a screw. The utility model can measure the depth of the upper and lower end surfaces of the groove and the width between the upper and lower end surfaces of the groove by using the inner and outer measuring structures formed by the two measuring surfaces of the interchangeable measuring block.
Description
Technical Field
The utility model relates to a geometric quantity measuring instrument, in particular to a micrometer for measuring the depth of a groove.
Background
The measuring tool is a common measuring tool used in geometric measuring tools, and is a measuring tool which changes rotary motion into linear motion by applying a spiral pair rotation principle, and the depth micrometer consists of a scale drum, a fixed inner sleeve, an outer sleeve, a measuring rod, a base drum, a force measuring device, a locking device and the like.
In practical application, the depth micrometer can only precisely measure the depth dimensions of the common through holes and the grooves, but cannot measure the depth dimensions from the grooves to the end faces on the inner wall of the conventional valve body and the width of the grooves, and although the depth and the width of the grooves can also be measured by adopting the multipurpose depth caliper, the measurement precision is poor, and when the measurement precision is high, the special gauge is generally adopted for detection (comparison method), so that the use is very inconvenient.
Disclosure of Invention
Aiming at the defects of the prior art, the utility model aims to solve the technical problem of providing a micrometer for measuring the depth of a groove, which is convenient to detect and use.
The measuring groove depth micrometer capable of solving the technical problems comprises a scale drum and a measuring rod, wherein a positive rotation force measuring piece is arranged on the scale drum, and the difference is that:
1. the measuring rod is coaxially provided with an exchangeable measuring block, and two axial end surfaces of the exchangeable measuring block are measuring surfaces with the requirements of dimensional accuracy and flatness.
2. And the scale drum is also provided with a reverse rotation force measuring piece.
Further, the interchangeable measuring block is coaxially mounted on an interchangeable measuring rod which is coaxially mounted on a measuring rod.
Further, the interchangeable measuring block and the interchangeable measuring rod are fastened to the measuring rod by a screw.
The utility model has the beneficial effects that:
1. in the structure of the micrometer for measuring the depth of the groove, the depth of the upper end face and the lower end face of the groove and the width between the upper end face and the lower end face of the groove can be measured by utilizing the inner measuring structure and the outer measuring structure formed by the two measuring surfaces of the interchangeable measuring block.
2. In the structure of the utility model, different depth measuring ranges are formed by utilizing different lengths of the interchangeable measuring bars.
3. In the structure of the utility model, the forward rotation force measuring piece and the reverse rotation force measuring piece are utilized to ensure the stability of force measurement during internal and external measurement.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present utility model.
Fig. 2 is a schematic view of the measurement of the lower end face of the trench in the hole using the embodiment of fig. 1.
Fig. 3 is a schematic diagram of the detection of the upper end face of the trench in the hole using the embodiment of fig. 1.
Fig. 4 (a) is a detail view of the interchangeable test block of the embodiment of fig. 1.
Fig. 4 (b) is a detail view of the interchangeable spindle of the embodiment of fig. 1.
Drawing number identification: 1. a positive rotation force member; 2. a scale drum; 3. a measuring rod; 4. the exchangeable test block; 5. a counter-rotating force-measuring member; 6. a screw; 7. an interchangeable spindle; 8. a groove; 9. a valve body; 10. an inner bore; 11. a base; 12. a base cylinder; 13. an outer cylinder; 14. an inner cylinder.
Detailed Description
The technical scheme of the utility model is further described below with reference to the embodiment shown in the drawings.
The micrometer for measuring the depth of the groove comprises a base body formed by a base 11 and a base barrel 12, wherein a measuring body formed by an outer barrel 13, an inner barrel 14, a scale barrel 2, a measuring rod 3, a forward rotation force measuring piece 1 and a reverse rotation force measuring piece 5 is arranged on the base body, and a coaxial threaded hole is formed inwards on a precise grinding surface at the lower end of the measuring rod 3, as shown in figure 1.
The measuring body further comprises an interchangeable measuring block 4 and an interchangeable measuring rod 7 (with different length specifications), coaxial screw holes are formed in the interchangeable measuring block 4 and the interchangeable measuring rod 7, the interchangeable measuring rod 7 and the measuring rod 3 are in the same diameter, the diameter of the interchangeable measuring block 4 is larger than that of the interchangeable measuring rod 7, the interchangeable measuring block 4 and the interchangeable measuring rod 7 sequentially penetrate through the screw holes on the screw rod 6, the screw rod 6 is screwed into a threaded hole of the measuring rod 3 extending out of the lower reference surface of the base 11, the interchangeable measuring rod 7 is coaxially mounted on the lower end finish grinding surface of the measuring rod 3, and the interchangeable measuring block 4 can also be directly mounted on the lower end finish grinding surface of the measuring rod 3 by the screw rod 6, as shown in fig. 1.
In order to ensure the measurement precision, the length dimension precision between the finish grinding surfaces at the upper end and the lower end of the interchangeable measuring rod 7 is (L-0.0015) mm less than or equal to L less than or equal to (L+0.0015) mm, and the plane precision of the finish grinding surfaces at the upper end and the lower end of the interchangeable measuring rod 7 is 0.006mm, as shown in fig. 4 (b).
In order to ensure the measurement accuracy, the thickness dimension accuracy between the finish grinding surfaces at the upper end and the lower end of the interchangeable measuring block 4 is 2.0mm less than or equal to h less than or equal to (2+0.0015) mm, and the plane accuracy of the finish grinding surfaces at the upper end and the lower end of the interchangeable measuring block 4 is 0.006mm, as shown in fig. 4 (a).
The depth and the width of the groove 8 can be measured by adopting the utility model, the groove 8 is arranged on the side wall of the inner hole 10, the inner hole 10 is arranged on the valve body 9 in a penetrating way, and the interchangeable measuring rod 7 with corresponding length specification can be adopted according to the depth of the groove 8, as shown in fig. 2 and 3.
As shown in fig. 2, the normal rotation force gauge 1 is operated such that the lower end face of the exchangeable measuring block 4 is in contact with the lower end side face of the groove 8, and the depth dimension of the lower end side face of the groove 8 is obtained by adding the thickness (h) dimension of the exchangeable measuring block 4 to the reading of the scale drum 2.
As shown in fig. 3, the counter-rotating force gauge 5 is operated such that the upper end face of the exchangeable measuring block 4 is in contact with the upper end side face of the groove 8, and the depth dimension of the upper end side face of the groove 8 is obtained by reading the scale drum 2.
The difference between the depth dimensions of the upper and lower end surfaces of the groove 8 is the width dimension H of the groove 8.
Claims (3)
1. The micrometer for measuring the depth of the groove comprises a scale drum (2) and a measuring rod (3), wherein a positive rotation force measuring piece (1) is arranged on the scale drum (2), and the micrometer is characterized in that:
the measuring rod (3) is coaxially provided with an exchangeable measuring block (4), and two axial end surfaces of the exchangeable measuring block (4) are measuring surfaces with the requirements of dimensional accuracy and flatness;
the scale drum (2) is also provided with a reverse rotation force measuring piece (5).
2. The measurement trench depth micrometer of claim 1, wherein: the interchangeable measuring block (4) is coaxially arranged on the interchangeable measuring rod (7), and the interchangeable measuring rod (7) is coaxially arranged on the measuring rod (3).
3. The measurement trench depth micrometer of claim 2, wherein: the interchangeable measuring block (4) and the interchangeable measuring rod (7) are fastened on the measuring rod (3) by adopting a screw rod (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321602068.8U CN220170097U (en) | 2023-06-21 | 2023-06-21 | Micrometer for measuring depth of groove |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321602068.8U CN220170097U (en) | 2023-06-21 | 2023-06-21 | Micrometer for measuring depth of groove |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220170097U true CN220170097U (en) | 2023-12-12 |
Family
ID=89063238
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321602068.8U Active CN220170097U (en) | 2023-06-21 | 2023-06-21 | Micrometer for measuring depth of groove |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220170097U (en) |
-
2023
- 2023-06-21 CN CN202321602068.8U patent/CN220170097U/en active Active
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