CN215491473U - Counter bore depth measurement device and hand-held part for counter bore depth measurement device - Google Patents
Counter bore depth measurement device and hand-held part for counter bore depth measurement device Download PDFInfo
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- CN215491473U CN215491473U CN202121086018.XU CN202121086018U CN215491473U CN 215491473 U CN215491473 U CN 215491473U CN 202121086018 U CN202121086018 U CN 202121086018U CN 215491473 U CN215491473 U CN 215491473U
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Abstract
The utility model discloses a counter bore depth measurement device and a handheld part used for the counter bore depth measurement device, and solves the problems that the verticality of a dial indicator/dial indicator is influenced by the fixing mode of the depth measurement device and the dial indicator/dial indicator in the prior art, the dial indicator/dial indicator is compressed during measurement to shorten the service life of the dial indicator/dial indicator, a measuring head cannot be replaced in the use process, and the applicable measurement range is single. The counter bore depth measuring device comprises a measuring unit, an end cover, a conical clamp, a limiting ring, a top rod and a main body; the end cover is detachably and fixedly connected with the main body, and the end cover is in clearance fit with the measuring unit; a top rod for measuring the depth of the counter bore is arranged in the main body and moves along the inner wall of the main body; the conical clamp holder is sleeved on the measuring rod of the measuring unit and used for preventing the measuring rod of the measuring unit from falling off the end cover; the limiting ring is sleeved below the conical clamp holder and is in threaded connection with the upper end of the shell, and the limiting ring is in clearance fit with the conical clamp holder; the conical clamp holder is provided with a groove for clamping a measuring rod of the measuring unit so as to center the measuring unit with the conical clamp holder.
Description
Technical Field
The utility model relates to a measuring instrument, in particular to a counter bore depth measuring device and a handheld part for the counter bore depth measuring device.
Background
In the friction plate riveting process, the rivet depth (step hole type) after riveting needs to be measured, each friction plate is provided with a plurality of counter bores, and the production amount of the friction plate is large, so that the depth of a large number of counter bores needs to be measured quickly and accurately in a short time. The depth measurement device that adopts itself and the fixed mode of percentage table amesdial adopt radial screw top tightly at present, need use little screwdriver during the dismouting, screw tightening degree can lead to the fact the influence of certain degree to the straightness that hangs down of percentage table amesdial, and the device itself needs the spring atress of percentage table amesdial itself to stretch out and draw back moreover, has shortened percentage table amesdial life, and the unable nimble gauge head of changing of depth measurement device simultaneously, and measuring range that is suitable for is single.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the problems that the perpendicularity of a dial indicator/dial indicator is influenced by the fixing mode of a depth measuring device and the dial indicator/dial indicator in the prior art, the dial indicator/dial indicator is compressed during measurement, the service life of the dial indicator/dial indicator is shortened, a measuring head is flexibly replaced in use or in weighing, and the applicable measuring range is single, and provides a counter bore depth measuring device and a handheld part for the counter bore depth measuring device.
In order to achieve the purpose, the technical scheme adopted by the utility model is as follows:
a counter bore depth measurement device comprises a measurement unit 1 and a handheld part 2, and is characterized in that:
the handheld part 2 comprises an end cover 21, a conical clamp 22, a limiting ring 23, a mandril 25 and a shell 26;
the end cover 21 is detachably and fixedly connected with the shell 26, and the end cover 21 is in clearance fit with the measuring rod of the measuring unit 1;
a top rod 25 for measuring the depth of the counter bore is arranged in the shell 26, the upper end of the top rod 25 is in contact with the lower end of the measuring rod of the measuring unit 1, and the top rod 25 moves along the inner wall of the shell 26;
the conical clamp holder 22 is sleeved on the measuring rod of the measuring unit 1 and used for preventing the measuring rod of the measuring unit 1 from falling off the end cover 21;
the limiting ring 23 is sleeved below the conical clamp 22, the limiting ring 23 is in threaded connection with the upper end of the shell 26, and the limiting ring 23 is in clearance fit with the conical clamp 22;
the conical holder 22 is provided with a groove for clamping the measuring rod of the measuring unit 1, so that the measuring unit 1 is aligned with the conical holder 22.
Further, a spring gasket 27 and a spring 24 are arranged between the conical clamp 22 and the mandril 25;
the spring washer 27 and the spring 24 are sleeved on the measuring rod of the measuring unit 1, and the spring 24 is used for elastically supporting the conical clamp 22 and the mandril 25.
Further, the end cover 21 is in threaded connection with the shell 26, and axial pressure is applied to the conical clamp 22 during screwing;
the ejector rod 25 can be disassembled and replaced.
Further, the upper end of the shell 26 is provided with a step hole, the inner diameter of the step hole is larger than the outer diameter of the shell, and the limit ring 23 abuts against the step hole.
Further, the measuring unit 1 may be a general dial indicator or a dial indicator.
The utility model also provides a hand-held part for the counter bore depth sounding device, which is characterized in that:
the hand-held part 2 is used for clamping a counter bore measuring unit of a counter bore depth measuring device;
the handheld part 2 comprises an end cover 21, a conical clamp 22, a limiting ring 23, a mandril 25 and a shell 26;
the end cover 21 is detachably and fixedly connected with the shell 26, and the end cover 21 is in clearance fit with the measuring rod of the measuring unit 1;
a top rod 25 for measuring the depth of the counter bore is arranged in the shell 26, the upper end of the top rod 25 is contacted with the lower end of the measuring rod of the measuring unit 1, and the top rod 25 can move along the inner wall of the shell 26;
the conical clamp holder 22 is sleeved on the measuring rod of the measuring unit 1 and used for preventing the measuring rod of the measuring unit 1 from falling off the end cover 21;
the limiting ring 23 is sleeved below the conical clamp 22, the limiting ring 23 is in threaded connection with the upper end of the shell 26, and the limiting ring 23 is in clearance fit with the conical clamp 22;
the conical holder 22 is provided with a groove for clamping the measuring rod of the measuring unit 1, so that the measuring unit 1 is aligned with the conical holder 22.
Further, a spring gasket 27 and a spring 24 are arranged between the conical clamp 22 and the mandril 25;
the spring washer 27 and the spring 24 are sleeved on the measuring rod of the measuring unit 1, and the spring 24 is used for elastically supporting the conical clamp 22 and the mandril 25.
Further, the end cover 21 is in threaded connection with the shell 26, and axial pressure is applied to the conical clamp 22 during screwing;
the lower end measuring head part of the ejector rod 25 is fixedly connected with the ejector rod 25 or detachably connected with the ejector rod by screw threads;
the diameter of the measuring head part at the lower end of the ejector rod 25 is smaller than or equal to the bottom hole diameter of the shell 26.
Further, the upper end of the shell 26 is provided with a step hole, the inner diameter of the step hole is larger than the outer diameter of the step hole, and the limiting ring 23 abuts against the step hole.
Compared with the prior art, the utility model has the beneficial effects that:
1. the counter bore measuring device provided by the utility model is designed with the conical clamp holder, and due to the whole-circumference radial clamping mode and radial micro-movement of the conical clamp holder and the matching constraint of the end cover on the dial indicator sleeve, the dial indicator can be ensured to be centered and keep good verticality with the whole device.
2. A limiting ring is arranged in the counter bore measuring device and can limit the axial movement of the conical clamp holder.
3. Parts of each part of the counter bore measuring device can be manually and quickly assembled and disassembled as required without tools.
4. The counter bore measuring device is designed to be held by a human hand in terms of overall dimension, is moderate in weight and convenient and comfortable to use.
5. The counter bore measuring device can meet the counter bore depth measurement of different diameters by changing the size of the head part of the ejector rod.
Drawings
FIG. 1 is a diagram illustrating the configuration and the internal structure of a counterbore depth finder in a free state;
FIG. 2 is a schematic diagram of the operation of a measuring head of the counter bore depth measuring device in the measuring process;
FIG. 3 is a schematic view of a counter bore depth measurement device with a replaceable ejector rod probe;
reference numerals: 1-measuring unit, 2-handheld part, 21-end cover, 22-conical clamp, 23-spacing ring, 24-spring, 25-ejector rod, 26-main body, and 27-spring gasket.
Detailed Description
To make the objects, advantages and features of the present invention more apparent, a counter bore depth measuring device according to the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, a counterbore depth measurement device comprises a measurement unit 1 and a handheld part 2, wherein the handheld part 2 is matched with the measurement unit 1 to realize the counterbore measurement function.
The hand-held part 2 comprises an end cap 21, a conical clamp 22, a stop collar 23, a spring 24, a push rod 25, a housing 26 and a spring washer 27.
The end cover 21 is in threaded connection with the housing 26, and the end cover 21 is in clearance fit with the measuring rod of the measuring unit 1.
An ejector rod 25 for measuring the depth of the counter bore is arranged in the shell 26, the upper end of the ejector rod 25 is in contact with the lower end of the measuring rod of the measuring unit 1, and the ejector rod 25 can move along the inner wall of the shell 26.
The conical clamp holder 22 is sleeved on the measuring rod of the measuring unit 1 and used for preventing the measuring rod of the measuring unit 1 from falling off the end cover 21;
the limiting ring 23 is sleeved below the conical clamp 22, the limiting ring 23 is in threaded connection with the upper end of the shell 26, and the limiting ring 23 is in clearance fit with the conical clamp 22. The conical holder 22 is provided with a groove for clamping the measuring rod of the measuring unit 1, so that the measuring unit 1 is aligned with the conical holder 22. Axial pressure is applied to the cone-shaped clamp 22 during the screwing process of the end cover 21 and the shell 26; the upper end of casing 26 is equipped with the step hole, and the internal diameter is greater than the external diameter, spacing ring 23 offsets with the step hole for it is inseparabler to be connected with end cover 21, has also played the limit function to measuring element 1.
In the process that the end cover 21 and the shell 26 are screwed, the tapered clamp 22 clamps the measuring rod of the measuring unit 1, and then the handheld part 2 can move slightly in the radial direction in a self-adaptive mode, so that the measuring rod of the measuring unit 1 is aligned with the tapered clamp 22, and the measuring rod of the measuring unit 1 is prevented from being subjected to bending force in the using process to influence the measuring accuracy and the service life of the measuring unit 1.
A spring gasket 27 and a spring 24 are arranged between the conical clamp 22 and the ejector rod 25, the spring gasket 27 and the spring 24 are sleeved on a measuring rod of the measuring unit 1, the spring 24 plays an elastic supporting role for the conical clamp 22 and the ejector rod 25, and in the measuring process, the counter bore measurement is realized by utilizing the expansion and contraction of the spring. The lower end surface of the limiting ring 23 is abutted against the spring gasket 27.
The ejector rod 25 can be quickly disassembled and assembled, and the preset ejector rods 25 with different sizes and different shapes on the lower end surface can be replaced, so that the depth measurement of the counter bores with different sizes and different shapes in a preset range can be met.
The upper end of the ejector rod 25 is contacted with the lower end of the measuring rod of the measuring unit 1, namely, the accuracy of the measured data under the connection of the upper end of the ejector rod 25 and the lower end of the measuring rod of the measuring unit 1 is ensured, and the spring 24 ensures that the measuring rod of the measuring unit 1 is not separated from the upper end of the ejector rod 25. The contact connection can also be changed into fixed connection, such as threaded connection, so that the measuring rod of the measuring unit 1 can be conveniently detached while being separated from the upper end of the ejector rod 25.
The measuring unit 1 can be a general dial indicator or a dial indicator.
As shown in fig. 2(a), before measuring the depth of the counterbore, the lower end surface of the carrier rod 25 and the lower end surface of the housing 26 are zeroed on the flat plate; as shown in fig. 2(b), during measurement, the lower end surface of the ejector rod 25 is aligned with the counterbore, the handheld part 2 is pressed down, the lower end surface of the ejector rod 25 extends out of the zero plane, a height difference is generated between the lower end surface of the ejector rod 25 and the lower end surface of the shell 26, and the height difference is transmitted to the measurement unit 1, namely the depth of the counterbore.
As shown in fig. 3, the ejector pin 25 can be of three different designs. Firstly, as shown in fig. 3- (a), the diameter of the ejector rod 25 is the same as that of the measuring head at the lower end, and the lower end surface of the ejector rod 25 can be changed to be processed into counterbores with different diameters and different shapes for measuring counterbores with different sizes and different shapes; secondly, as shown in fig. 3- (b), the ejector rod 25 and the measuring head are not integrated, and the size of the measuring head is changed, so that the diameter of the measuring head is smaller than the bottom aperture of the shell 26, and a counter bore with a small diameter is convenient to measure; thirdly, as shown in fig. 3- (c), in the second design, the lower end D of the ejector rod 25 is changed into a measuring head in threaded connection with the main body of the ejector rod, that is, only measuring heads with different sizes and shapes need to be processed, so that more sizes and shapes can be matched, and the adaptation range can be expanded to a greater extent.
The utility model also provides a handheld part 2 for clamping the counter bore measuring unit 1, the structure of the handheld part 2 is the same as that of the counter bore depth measuring device, and the handheld device can be matched with different measuring devices to realize the measurement of different counter bore depths.
The above description is only an embodiment of the present invention, and is not intended to limit the scope of the present invention, and all equivalent structural changes made by using the contents of the present specification and the drawings, or applied directly or indirectly to other related technical fields, are included in the scope of the present invention.
Claims (9)
1. A counter bore depth measurement device comprises a measurement unit (1) and a handheld part (2), and is characterized in that:
the handheld part (2) comprises an end cover (21), a conical clamp holder (22), a limiting ring (23), a top rod (25) and a shell (26);
the end cover (21) is detachably and fixedly connected with the shell (26), and the end cover (21) is in clearance fit with a measuring rod of the measuring unit (1);
a top rod (25) for measuring the depth of the counter bore is arranged in the shell (26), the upper end of the top rod (25) is in contact with the lower end of a measuring rod of the measuring unit (1), and the top rod (25) moves along the inner wall of the shell (26);
the conical clamp holder (22) is sleeved on the measuring rod of the measuring unit (1) and used for preventing the measuring rod of the measuring unit (1) from falling off the end cover (21);
the limiting ring (23) is sleeved below the conical clamp holder (22), the limiting ring (23) is in threaded connection with the upper end of the shell (26), and the limiting ring (23) is in clearance fit with the conical clamp holder (22);
the conical clamp holder (22) is provided with a groove for clamping a measuring rod of the measuring unit (1) so as to enable the measuring unit (1) to be centered with the conical clamp holder (22).
2. The counterbore depth sounding device of claim 1, wherein:
a spring gasket (27) and a spring (24) are arranged between the conical clamp (22) and the ejector rod (25);
the spring gasket (27) and the spring (24) are sleeved on a measuring rod of the measuring unit (1), and the spring (24) is used for elastically supporting the conical clamp holder (22) and the ejector rod (25).
3. The counterbore depth sounding device of claim 2, wherein:
the end cover (21) is in threaded connection with the shell (26), and axial pressure is applied to the conical clamp holder (22) in the screwing process;
the lower end measuring head part of the ejector rod (25) is fixedly connected with the ejector rod (25) or is in detachable threaded connection;
the diameter of the measuring head part at the lower end of the ejector rod (25) is smaller than or equal to the bottom hole diameter of the shell (26).
4. The counterbore depth sounding device of claim 3, wherein:
the upper end of casing (26) is equipped with the step hole, and the internal diameter is greater than the external diameter, spacing ring (23) offset with the step hole.
5. The counterbore depth setting apparatus of any one of claims 1-4, wherein:
the measuring unit (1) is a universal dial indicator or a dial indicator.
6. A hand-held part for a counterbore depth sounding device, comprising:
the hand-held part (2) is used for clamping a counter bore measuring unit of a counter bore depth measuring device;
the handheld part (2) comprises an end cover (21), a conical clamp holder (22), a limiting ring (23), a top rod (25) and a shell (26);
the end cover (21) is detachably and fixedly connected with the shell (26), and the end cover (21) is in clearance fit with a measuring rod of the measuring unit (1);
a top rod (25) for measuring the depth of the counter bore is arranged in the shell (26), the upper end of the top rod (25) is in contact with the lower end of a measuring rod of the measuring unit (1), and the top rod (25) moves along the inner wall of the shell (26);
the conical clamp holder (22) is sleeved on the measuring rod of the measuring unit (1) and used for preventing the measuring rod of the measuring unit (1) from falling off the end cover (21);
the limiting ring (23) is sleeved below the conical clamp holder (22), the limiting ring (23) is in threaded connection with the upper end of the shell (26), and the limiting ring (23) is in clearance fit with the conical clamp holder (22);
the conical clamp holder (22) is provided with a groove for clamping a measuring rod of the measuring unit (1) so as to enable the measuring unit (1) to be centered with the conical clamp holder (22).
7. The hand-held portion for a counterbore sounding device of claim 6, further comprising:
a spring gasket (27) and a spring (24) are arranged between the conical clamp (22) and the ejector rod (25);
the spring gasket (27) and the spring (24) are sleeved on a measuring rod of the measuring unit (1), and the spring (24) is used for elastically supporting the conical clamp holder (22) and the ejector rod (25).
8. The hand-held portion for a counterbore sounding device of claim 7, further comprising:
the end cover (21) is in threaded connection with the shell (26), and axial pressure is applied to the conical clamp holder (22) in the screwing process;
the lower end measuring head part of the ejector rod (25) is fixedly connected with the ejector rod (25) or is in detachable threaded connection;
the diameter of the measuring head part at the lower end of the ejector rod (25) is smaller than or equal to the bottom hole diameter of the shell (26).
9. The hand-held portion for a counterbore sounding device of claim 8, further comprising:
the upper end of casing (26) is equipped with the step hole, and the internal diameter is greater than the external diameter, spacing ring (23) offset with the step hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121086018.XU CN215491473U (en) | 2021-05-18 | 2021-05-18 | Counter bore depth measurement device and hand-held part for counter bore depth measurement device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121086018.XU CN215491473U (en) | 2021-05-18 | 2021-05-18 | Counter bore depth measurement device and hand-held part for counter bore depth measurement device |
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| Publication Number | Publication Date |
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| CN215491473U true CN215491473U (en) | 2022-01-11 |
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| CN202121086018.XU Active CN215491473U (en) | 2021-05-18 | 2021-05-18 | Counter bore depth measurement device and hand-held part for counter bore depth measurement device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7076874B1 (en) | 2022-02-21 | 2022-05-30 | 株式会社ファム | Measuring instrument |
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2021
- 2021-05-18 CN CN202121086018.XU patent/CN215491473U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7076874B1 (en) | 2022-02-21 | 2022-05-30 | 株式会社ファム | Measuring instrument |
| JP2023121498A (en) * | 2022-02-21 | 2023-08-31 | 株式会社ファム | measuring instrument |
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