CN215413541U - Measuring device for measuring inner diameter of contact finger groove - Google Patents
Measuring device for measuring inner diameter of contact finger groove Download PDFInfo
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- CN215413541U CN215413541U CN202120800178.XU CN202120800178U CN215413541U CN 215413541 U CN215413541 U CN 215413541U CN 202120800178 U CN202120800178 U CN 202120800178U CN 215413541 U CN215413541 U CN 215413541U
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- inner diameter
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Abstract
The utility model relates to the technical field of measuring devices, in particular to a measuring device for measuring the inner diameter of a contact finger groove. A measuring device for measuring the inner diameter of a contact finger groove comprises a vernier caliper and two measuring blocks, wherein the two measuring blocks are respectively detachably fixed on measuring heads of two inner measuring claws and extend in the arrangement direction of the two inner measuring claws; and one end of each measuring block, which is back to the arrangement direction of the two inner measuring claws, is a finger touching groove adapting end which is used for adapting the shape of the finger touching groove. The measuring device for measuring the inner diameter of the finger-touching groove adopts the mode that the measuring blocks are additionally arranged on the vernier caliper and are fixed on the inner measuring claw, the distance between the finger-touching groove adapting ends of the two measuring blocks is larger than the distance between the measuring surfaces on the inner measuring claw, the finger-touching groove adapting ends can be inserted into the finger-touching groove for measurement, the measuring operation is simple and convenient, and the efficiency is high.
Description
Technical Field
The utility model relates to the technical field of measuring devices, in particular to a measuring device for measuring the inner diameter of a contact finger groove.
Background
The contact seat type parts are used as key parts of high-voltage switch equipment, are applied to the high-voltage switch equipment with various voltage grades, particularly contact seats with spring contact finger grooves, have a supporting function in the switch operation process, and have higher requirements on the through-current performance. For the contact base, in order to ensure the requirement of through-flow performance, the parts have the requirement of silver plating in the subsequent process, so the requirement of the dimensional accuracy of the inner diameter of the contact finger groove is strict. Due to the structural limitation of the finger groove, the inner diameter of the finger groove needs to be measured indirectly, and more time is consumed in the measurement process.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a measuring device for measuring the inner diameter of a contact finger groove, which has high measuring efficiency.
The measuring device for measuring the inner diameter of the contact finger groove adopts the following technical scheme:
a measuring device for measuring the inside diameter of a finger groove comprising:
the vernier caliper comprises a caliper body and two inner measuring claws, wherein the two inner measuring claws comprise measuring heads, the measuring heads are provided with measuring surfaces, the measuring surfaces are used for contacting with an object to be measured to measure the size of the object, and the measuring surfaces on the two inner measuring claws are arranged in a reverse manner;
the two measuring blocks are respectively detachably fixed on measuring heads of the two inner measuring claws and extend in the arrangement direction of the two inner measuring claws;
the one end that two measuring blocks were carried on the back in two interior measuring claw arrangement direction is for being used for with touch the finger groove adaptation end of finger groove shape adaptation, and the interval between the finger groove adaptation end is greater than the interval between the measuring face on two interior measuring claws on two measuring blocks to make touch finger groove adaptation end can insert and touch in the finger groove.
Has the advantages that: the measuring device for measuring the inner diameter of the finger-touching groove adopts the mode that the measuring blocks are additionally arranged on the vernier caliper and are fixed on the inner measuring claw, the distance between the finger-touching groove adapting ends of the two measuring blocks is larger than the distance between the measuring surfaces on the inner measuring claw, the finger-touching groove adapting ends can be inserted into the finger-touching groove for measurement, the measuring operation is simple and convenient, and the efficiency is high.
Further, be equipped with interior graduated flask fixed orifices on the measuring block, the measuring head inserts interior graduated flask fixed orifices, is equipped with the screw hole on the pore wall of interior graduated flask fixed orifices, and threaded hole is equipped with the puller bolt, and the puller bolt is tight with the measuring head top and is realized measuring block and interior graduated flask fixed. The measuring block is fixed through the puller bolt, so that the measuring block can be conveniently detached.
Furthermore, the extending direction of the threaded hole is perpendicular to the extending direction of the inner measuring jaw fixing hole, and machining is facilitated.
Furthermore, the surface of the measuring head, which is tightly pressed against the tightening bolt, is a tightening fitting surface, the tightening fitting surface is opposite to the measuring surface, and the measuring surface is tightly pressed against the wall surface of the hole of the inner measuring claw fixing hole. The gap between the measuring surface and the inner measuring jaw fixing hole can be avoided, and the measuring precision is ensured.
Furthermore, the inner measuring claw is provided with a measuring block stopping surface matched with the measuring block in a stopping way in the extending direction of the inner measuring claw fixing hole. The positioning and installation of the measuring block are facilitated, and the installation efficiency of the measuring block is improved.
Furthermore, the puller bolt is a countersunk bolt. The occupied space of the puller bolt is reduced.
Furthermore, the inner measuring jaw fixing hole is a through hole.
Further, the two measuring blocks are symmetrically arranged. The processing is convenient, and the universality of the two measuring blocks is good.
Drawings
FIG. 1 is a schematic structural diagram of a finger groove to be measured in an embodiment of a measuring apparatus for measuring an inner diameter of a finger groove according to the present invention;
FIG. 2 is a schematic structural diagram of a vernier caliper in an embodiment of the measuring apparatus for measuring the inner diameter of a finger groove according to the present invention;
FIG. 3 is an isometric view of a gauge block in a particular embodiment of a measuring device for measuring the inside diameter of a stylus slot of the present invention;
FIG. 4 is a schematic structural diagram of a measuring block in an embodiment of the measuring apparatus for measuring the inner diameter of a finger groove according to the present invention;
FIG. 5 is a cross-sectional view A-A of FIG. 4;
in the figure: 1. a contact finger to be measured; 11. a finger touch groove; 2. a vernier caliper; 21. a ruler body; 22. an inner measuring jaw; 221. a measuring head; 222. measuring the surface; 223. abutting against the matching surface; 224. a side of the measuring head; 225. measuring a block stop face; 23. an external measuring jaw; 3. a measuring block; 31. a finger slot mating end; 32. an inner measuring jaw fixing hole; 33. a threaded bore.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the utility model, are intended for purposes of illustration only and are not intended to limit the scope of the utility model. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
It is noted that relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The terms "upper", "lower", "front", "rear", "left", "right", and the like indicate orientations or positional relationships that are assumed to be orientations or positional relationships, and are used for convenience in describing the present invention and for simplicity in description, but do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
The features and properties of the present invention are described in further detail below with reference to examples.
The specific embodiment 1 of the measuring device for measuring the inner diameter of the contact finger groove of the present invention:
as shown in fig. 1, in the structure of the finger groove 11 of the finger to be measured 1 in the present embodiment, the groove bottom surface of the finger groove 11 is formed by two inclined surfaces, and the included angle between the two inclined surfaces is 135 degrees.
As shown in fig. 2, a measuring device for measuring the inner diameter of a finger groove includes a vernier caliper 2 and a measuring block 3. The vernier caliper 2 comprises a caliper body 21, an inner measuring jaw 22 and an outer measuring jaw 23, wherein the inner measuring jaw 22 is used for measuring the internal dimensions of holes, grooves, intervals and the like on an object to be measured, and the outer measuring jaw 23 is used for measuring the external dimensions of the object to be measured. Two inner measuring claws 22 and two outer measuring claws 23 are arranged. One of the inner measuring claws is fixed with the ruler body, and the other inner measuring claw can move relative to the ruler body. The measuring head 221 of the inner measuring jaw 22 has a measuring surface 222 and a top tight fitting surface 223 opposite to the measuring surface 222, and the measuring head side surface 224 is arranged on both sides of the top tight fitting surface 223. The measuring surface 222 is used to contact the object to be measured and measure the dimension of the object to be measured. The structure of the vernier caliper 2 is prior art and will not be described in detail.
As shown in fig. 3 to 5, the two measuring blocks 3 are provided, the two measuring blocks 3 are symmetrically provided and have the same structure, and are respectively detachably fixed on the measuring heads 221 of the two inner measuring claws 22, one ends of the two measuring blocks 3, which are opposite to each other in the arrangement direction of the two inner measuring claws 22, are contact finger groove adaptation ends 31 for adapting to the shapes of the contact finger grooves 11, the contact finger groove adaptation ends 31 also have two inclined planes, the included angle between the two inclined planes is 135 degrees, and the connecting part of the two inclined planes is in arc transition. The distance between the finger-touching groove adapting ends 31 on the two measuring blocks 3 is larger than the distance between the measuring surfaces 222 on the two inner measuring claws 22, so that the finger-touching groove adapting ends 31 can be inserted into the finger-touching grooves 11 and are used for contacting with the groove bottoms of the finger-touching grooves 11 to measure the sizes of the finger-touching grooves 11.
An inner measuring jaw fixing hole 32 is formed in the measuring block 3, and the inner measuring jaw fixing hole 32 is a through hole. The inner measuring jaw 22 is inserted into the inner measuring jaw fixing hole 32, and in order to facilitate the determination of the position of the measuring block 3, a measuring block stopping surface 225 which is matched with the measuring block 3 in a stopping manner in the extending direction of the inner measuring jaw fixing hole 32 is arranged on the inner measuring jaw 22, so that the measuring block 3 can be conveniently positioned and installed.
The hole wall of the inner measuring jaw fixing hole 32 is provided with a threaded hole 33, and the extending direction of the threaded hole 33 is consistent with the arrangement direction of the two inner measuring jaws 22. The threaded hole 33 is used for screwing in a puller bolt, and the puller bolt extends into the inner measuring jaw fixing hole 32 to be tightly propped on the puller matching surface 223, so that the fixing of the measuring block 3 and the inner measuring jaw 22 is realized. In this embodiment, the puller bolt is tightly matched with the puller matching surface 223 in a jacking manner, so that the measuring surface 222 is attached to the hole wall of the inner measuring jaw fixing hole 32, and the measuring surface 222 is a measuring reference surface, so that a gap between the measuring surface 222 and the inner measuring jaw fixing hole 32 can be avoided, and the measuring precision is improved.
In the present embodiment, the side surface 224 of the measuring head is a plane and is in clearance fit with the wall surface of the inner measuring jaw fixing hole 32, so that the measuring block 3 can move relative to the measuring head 221 in the arrangement direction of the two inner measuring jaws 22, and the measuring surface 222 is pressed against the wall surface of the inner measuring jaw fixing hole 32. In other embodiments, the side surface of the measuring head may also be an arc surface, and at this time, the arc top of the side surface of the measuring head may be in sliding fit with the wall surface of the hole fixed by the inner measuring claw.
In this embodiment, the bolt head is exposed. In other embodiments, to reduce the space occupied by the jacking bolts, the jacking bolts may be countersunk bolts.
The utility model is used for measuring the specific embodiment 2 of the measuring device of the inner diameter of the contact finger groove, and the difference between the embodiment and the above embodiment is only that: in this embodiment, the inner measuring jaw fixing hole on the measuring block is a blind hole. In other embodiments, the measuring block can be clamped to the inner measuring jaw by a clamp.
The present invention is a specific embodiment 3 of a measuring device for measuring the inner diameter of a contact finger groove, and the present embodiment is different from the above embodiments only in that: in this embodiment, under the condition that the requirement for measurement accuracy is not high, the extending direction of the threaded hole is perpendicular to the arrangement direction of the two inner measuring claws, and at this time, the jacking bolt jacks up the side face of the measuring head.
The present invention is a specific embodiment 4 of a measuring device for measuring the inner diameter of a contact finger groove, and the present embodiment is different from the above embodiments only in that: in this embodiment, the two measuring blocks have different lengths in the arrangement direction of the two inner measuring claws, and one of the two measuring blocks has a length greater than that of the other measuring block.
The above description is only a preferred embodiment of the present invention, and not intended to limit the present invention, the scope of the present invention is defined by the appended claims, and all structural changes that can be made by using the contents of the description and the drawings of the present invention are intended to be embraced therein.
Claims (8)
1. A measuring device for measuring the inside diameter of a finger groove, comprising:
the vernier caliper comprises a caliper body and two inner measuring claws, wherein the two inner measuring claws comprise measuring heads, the measuring heads are provided with measuring surfaces, the measuring surfaces are used for contacting with an object to be measured to measure the size of the object, and the measuring surfaces on the two inner measuring claws are arranged in a reverse manner;
the two measuring blocks are respectively detachably fixed on measuring heads of the two inner measuring claws and extend in the arrangement direction of the two inner measuring claws;
the one end that two measuring blocks were carried on the back in two interior measuring claw arrangement direction is for being used for with touch the finger groove adaptation end of finger groove shape adaptation, and the interval between the finger groove adaptation end is greater than the interval between the measuring face on two interior measuring claws on two measuring blocks to make touch finger groove adaptation end can insert and touch in the finger groove.
2. The measuring device for measuring the inner diameter of the contact finger groove according to claim 1, wherein the measuring block is provided with an inner measuring claw fixing hole, the measuring head is inserted into the inner measuring claw fixing hole, a threaded hole is formed in the hole wall of the inner measuring claw fixing hole, a puller bolt is arranged in the threaded hole, and the puller bolt is tightly propped against the measuring head to fix the measuring block and the inner measuring claw.
3. The measuring device for measuring the inner diameter of the contact finger groove as claimed in claim 2, wherein the extension direction of the threaded hole is perpendicular to the extension direction of the inner measuring jaw fixing hole.
4. The measuring device for measuring the inner diameter of the contact finger groove as claimed in claim 3, wherein the surface of the measuring head abutting against the abutting bolt is an abutting fitting surface, the abutting fitting surface is opposite to the measuring surface, and the measuring surface abuts against the wall surface of the hole of the inner measuring claw fixing hole.
5. The measuring device for measuring the inner diameter of the contact finger groove as claimed in claim 4, wherein the inner measuring jaw is provided with a measuring block stop surface which is in stop fit with the measuring block in the extending direction of the inner measuring jaw fixing hole.
6. The measuring device for measuring the inner diameter of the contact finger groove as claimed in claim 4, wherein the puller bolt is a countersunk bolt.
7. The measuring device for measuring the inner diameter of the contact finger groove according to any one of claims 2 to 6, wherein the inner measuring jaw fixing hole is a through hole.
8. A measuring device for measuring the inner diameter of a contact finger groove according to any one of claims 1 to 6, characterized in that two measuring blocks are symmetrically arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120800178.XU CN215413541U (en) | 2021-04-19 | 2021-04-19 | Measuring device for measuring inner diameter of contact finger groove |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120800178.XU CN215413541U (en) | 2021-04-19 | 2021-04-19 | Measuring device for measuring inner diameter of contact finger groove |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215413541U true CN215413541U (en) | 2022-01-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120800178.XU Active CN215413541U (en) | 2021-04-19 | 2021-04-19 | Measuring device for measuring inner diameter of contact finger groove |
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| Country | Link |
|---|---|
| CN (1) | CN215413541U (en) |
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2021
- 2021-04-19 CN CN202120800178.XU patent/CN215413541U/en active Active
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