CN210268406U - Digital caliper - Google Patents
Digital caliper Download PDFInfo
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- CN210268406U CN210268406U CN201921480378.0U CN201921480378U CN210268406U CN 210268406 U CN210268406 U CN 210268406U CN 201921480378 U CN201921480378 U CN 201921480378U CN 210268406 U CN210268406 U CN 210268406U
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Abstract
The utility model discloses a digital caliper, including the main tong arm and the vice tong arm that set up at the horizontal direction symmetry, the pincers tail of main tong arm and vice tong arm rotatable link together, the binding clip of main tong arm and vice tong arm's binding clip are used for the centre gripping testee, digital caliper still includes sensor, microprocessor, display screen and power, the sensor is used for acquireing main tong arm and vice tong arm's turned angle α, and change turned angle α into electric signal data and send microprocessor, microprocessor is used for receiving the electric signal data of turned angle α that the sensor sent, and carry out the operation, obtain the distance X between two binding clips, the display screen is used for showing the distance X that microprocessor calculated, the power is sensor, microprocessor, the power supply of display screen.
Description
Technical Field
The utility model relates to a measuring tool, concretely relates to digital calliper.
Background
The outer caliper is generally used for measuring the outer diameter of a pipeline, the length measurement result cannot be directly read, but the caliper is placed at a proper position on a workpiece and then taken down, and then the distance of the caliper head is read by a graduated scale; or the required size is firstly selected by utilizing the graduated scale, the opening degree of the caliper is fixed, and then whether the size of the part meets the requirement or not is checked. The principle of the inner caliper is similar to that of the outer caliper and is mainly used for measuring the inner diameter of a pipeline and the like.
The application number is '201320244232.2', the name is 'inside and outside calliper', which comprises a main calliper leg 1, an auxiliary calliper leg 2, a connecting rod 3 and two tong heads 4, wherein the tong heads 4 are inner tong heads 41, one end of the main calliper leg 1 is hinged with one end of the auxiliary calliper leg 2, the lower ends of the main calliper leg and the auxiliary calliper leg are respectively provided with a groove 8, the upper end of each inner tong head 41 is provided with a square column 7, the square column 7 is matched with the shape of the groove 8, the square column 7 is connected with the groove 8 through a fixing bolt 9 and a spring gasket 10, the body of the auxiliary calliper leg 2 is provided with a long hole 5, the inner tong heads 41 are respectively arranged at the other ends of the main calliper leg and the auxiliary calliper leg, one end of the connecting rod 3 is hinged with the upper part of the main calliper leg 1, the other end; during measurement, the fastening bolt is loosened, the length size such as the inner diameter or the groove width of the cylindrical hole is measured through the two inner jaws, the fastening bolt is screwed after the measured size is obtained through the two inner jaws, and then the required size can be measured by comparing the two inner jaws with the graduated scale. When the outer diameter of the cylinder or the length of an object needs to be measured, the fixing bolt is screwed out, the inner caliper heads face the inner side of the caliper and are respectively inserted into the grooves at the lower ends of the main and auxiliary caliper legs, and then the fixing bolt is screwed down, so that the caliper can be used.
Application No. 201820251668.7 entitled "an adjustable outer caliper", comprising: the device comprises an arc-shaped fixing support 1, a spring 2, a screw rod 3, a handle 4, a positioning nut 5 and two measuring claws 6; when measuring, tighten up two measuring jaws 6 of calliper with the hand and can easily get into the size of 7 external diameters of work pieces, put into the outer wall, lock set nut 5 to this position, remove calliper gently, avoid colliding with the work piece, then measure the distance between two tong angles with slide caliper and be exactly the size of measuring the external diameter.
The application number is '201420161543.7', the name is 'a fine-tuning inside and outside caliper', a large pin shaft 1, a caliper body 2, a convex block 3, a small pin shaft 4, a fine-tuning nut 5, a fine-tuning bolt 6 and a caliper foot 7 are disclosed, the caliper body 2, the convex block 3, the small pin shaft 4, the fine-tuning nut 5, the fine-tuning bolt 6 and the caliper foot 7 are arranged in bilateral symmetry, the left caliper body 2 and the right caliper body 2 are connected in a mode that the large pin shaft 1 is hinged, the convex block 3 is arranged on the inner side of the caliper body 2, a small pin shaft 4 hole is formed in the convex block 3, the convex block 3 is connected with the caliper body 2 in a mode of welding, the caliper foot 7 is arranged on the inner side of the convex block 3, the caliper foot 7 is connected with the convex block 3 in a mode that the small pin shaft 4 is hinged, a; during measurement, the clamp feet of the inner and outer calipers are adjusted to approximate sizes of measured parts, and the opening sizes of the inner and outer calipers are adjusted through the fine adjustment nuts, so that the parts are quickly and accurately measured.
The three comparison files are all measured in a mechanical mode, and after the measured object is taken out or the calipers are moved out of the measured object, the distance between the two caliper heads is measured by using a graduated scale or a vernier caliper, so that the size of the measured object is obtained; and the in-process of taking off measured object or calliper causes the not hard up of calliper very easily to produce great error, it is used for preventing that calliper is not hard up though being equipped with fastener, but also can't avoid the error.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide simple structure, convenient to use, need not to take out the measured object can direct measurement and show measured object dimensional data, and measurement accuracy is high, digital calliper that the error is little.
In order to achieve the above purpose, the technical scheme of the utility model is as follows:
the digital caliper comprises a main caliper arm and an auxiliary caliper arm which are symmetrically arranged in the horizontal direction, wherein a caliper tail of the main caliper arm is rotatably connected with a caliper tail of the auxiliary caliper arm, and a caliper head of the main caliper arm and a caliper head of the auxiliary caliper arm are used for clamping a measured object; the digital caliper further comprises:
the sensor is connected with the clamp tails of the main clamp arm and the auxiliary clamp arm, and is used for acquiring the rotation angle α of the main clamp arm and the auxiliary clamp arm, converting the rotation angle α into electric signal data and sending the electric signal data to the microprocessor;
the microprocessor is electrically connected with the sensor and used for receiving the electric signal data of the rotation angle α sent by the sensor and calculating to obtain the distance X between the two clamp heads of the main clamp arm and the auxiliary clamp arm;
the operation formula is that X is 2 R.sin (α/2), R is the straight line distance between the end part of the forceps head and the end part of the forceps tail;
the display screen is electrically connected with the microprocessor and is used for displaying the distance X calculated by the microprocessor;
and the power supply is electrically connected with the sensor, the microprocessor and the display screen and supplies power to the sensor, the microprocessor and the display screen.
In one embodiment of the present invention, the tail of the main clamping arm and the tail of the auxiliary clamping arm are rotatably hinged together.
In an embodiment of the present invention, the clamp head is detachably connected to the main clamp arm and the auxiliary clamp arm.
In an embodiment of the present invention, the binding clip is an outer binding clip or an inner binding clip, two outer binding clips are symmetrically disposed, and two inner binding clips are symmetrically disposed.
In an embodiment of the present invention, the outer binding clip is an arc structure extending toward the inner sides of the main and auxiliary clamping arms, and the inner binding clip is an arc structure extending toward the outer sides of the main and auxiliary clamping arms.
In an embodiment of the present invention, the sensor is a circular capacitive sensor.
Through the technical scheme, the beneficial effects of the utility model are that:
1. the utility model discloses a set up sensor, microprocessor, display screen, it can carry out the measurement and the demonstration of testee size in centre gripping testee, need not to take out the testee or shift out calliper from the testee, and it has reduced the not hard up measuring error who brings of calliper, has improved measurement accuracy.
2. The binding clip is connected for dismantling between binding clip and main tong arm, the vice tong arm, because the binding clip is worn and torn easily and for the ease that the binding clip is suitable for the testee of different sizes and shape, adopts to dismantle to connect the binding clip of being convenient for maintain and change different models, improves calliper maintenance efficiency and commonality.
3. When the clamp head adopts an outer clamp head, the clamp head can be used for measuring the outer diameter, the length and the like of a measured object, and when the clamp head adopts an inner clamp head, the clamp head can be used for measuring the inner diameter, the groove width and the like of the measured object.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic view of the closed state of embodiment 1 of the present invention;
fig. 3 is a schematic view of a measurement (open) state of embodiment 1 of the present invention;
fig. 4 is a schematic view of a clamping state of embodiment 2 of the present invention (the outer jaw is changed into the inner jaw);
fig. 5 is a schematic view of a measurement state of embodiment 2 of the present invention;
the corresponding part names indicated by the numbers and letters in the drawings:
10. the clamp comprises a main clamp arm 20, an auxiliary clamp arm 30, a clamp tail 40, a clamp head 41, an outer clamp head 42, an inner clamp head 50, a sensor 60 and a display screen.
Detailed Description
In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand and understand, the present invention is further explained by combining with the specific drawings.
Referring to fig. 1, the utility model discloses a digital calliper, include at main tong arm 10 and the vice tong arm 20 that the horizontal direction symmetry set up, main tong arm 10 and vice tong arm 20 all include pincers tail 30 and binding clip 40, the pincers tail 30 of main tong arm 10 with vice tong arm 20's pincers tail 30 is rotatable to be connected together, adopts articulated mode to connect in this application, can also adopt other rotatable connected modes of course, and the here is not added the perk.
The rotation angle α of the main caliper arm 10 and the auxiliary caliper arm 20 is 0 to 140 °, and may be other angles according to actual needs, which is not described herein, and the binding clip 40 of the main caliper arm 10 and the binding clip 40 of the auxiliary caliper arm 20 are used for clamping an object to be measured.
The clamp head 40 is detachably connected with the main clamp arm 10 and the auxiliary clamp arm 20, and the clamp head 40 is easy to wear and is suitable for measured objects with different sizes and shapes, so that the clamp head is detachably connected, the clamp heads with different types are convenient to maintain and replace, and the maintenance efficiency and the universality of the clamp are improved; the binding clip 40 can be clamped with the main clamping arm 10 and the auxiliary clamping arm 50, and can also be connected with the auxiliary clamping arm by bolts, and the connection structure and the connection mode are not explained here, so long as the binding clip is detachable; of course, the clamp head 40, the main clamp arm 10 and the auxiliary clamp arm 20 may be formed integrally, and have high strength and convenient processing.
The digital caliper further includes a sensor 50, a microprocessor (not shown), a display 60, and a power source (not shown).
The sensor 50 is a conventional circular capacitive sensor (conventional product), the sensor 50 is connected to the tail 30 of the main caliper arm 10 and the auxiliary caliper arm 20 respectively and is clamped with the main caliper arm 10 and the auxiliary caliper arm 20 being opened or clamped, and the sensor 50 is used for acquiring the rotation angle α (i.e. the opening or clamping angle of the main caliper arm 10 and the auxiliary caliper arm 20) of the main caliper arm 10 and the auxiliary caliper arm 20 and converting the rotation angle α into electrical signal data to be sent to the microprocessor.
The microprocessor is a conventional microprocessor, is provided with an operation formula, and is not described herein, and is electrically connected to the sensor 50, and is configured to receive the electrical signal data of the rotation angle α sent by the sensor 50, and perform operation to obtain the distance X between the two forcep heads 40 of the main clamp arm 10 and the auxiliary clamp arm 20;
the operation formula is that X is 2 R.Sin (α/2), and R is the straight line distance between the end part of the forceps head and the end part of the forceps tail.
The display screen 60 is electrically connected with the microprocessor and is used for displaying the distance X calculated by the microprocessor; the display screen is a liquid crystal display screen, and a control button for controlling the display screen to be switched on and off and other function buttons are arranged on the display screen, which is not described herein again.
The power supply is electrically connected with and supplies power to the sensor 50, the microprocessor and the display screen 60; the power supply in this application is a built-in lithium battery, and may also be a rechargeable battery, which is not described herein again.
Example 1
Referring to fig. 2 and 3, in order to measure the outer diameter, length, and other dimensions of an object to be measured, the clamp heads are outer clamp heads 41, two outer clamp heads 41 are symmetrically arranged, the outer clamp heads 41 are arc-shaped structures extending toward the inner sides of the main clamp arm and the auxiliary clamp arm, when measuring, the main clamp arm 10 and the auxiliary clamp arm 20 are closed, the two outer clamp heads 41 are contacted, the rotation angle detected by the sensor 50 is 0, the main clamp arm 10 and the auxiliary clamp arm 20 are opened, the two outer clamp heads 41 are clamped at a measured position, the sensor 50 detects the rotation angle α of the main clamp arm 10 and the auxiliary clamp arm 20, the rotation angle α is converted into electric signal data and transmitted to the microprocessor, the microprocessor receives the electric signal data of the rotation angle α transmitted by the sensor 50 and performs calculation to obtain the distance X, X is 2R · Sin (α/2), R is the linear distance between the end of the clamp head and the end of the tail, and the X display 60 finally displays the readings.
Example 2
Referring to fig. 2, 4 and 5, in order to measure the length dimension such as the inner diameter or the groove width of the object to be measured, the main caliper arm 10 and the sub caliper arm 20 are clamped inward, the outer caliper head 41 is changed to the inner caliper head 42, the two inner caliper heads 42 are symmetrically arranged, the inner caliper head 42 is an arc structure extending to the outer sides of the main caliper arm and the sub caliper arm, when measuring, the main caliper arm 10 and the sub caliper arm 20 are closed first, at this time, the two outer caliper heads 41 are in contact, the rotation angle detected by the sensor 50 is 0, the main caliper arm 10 and the sub caliper arm 20 continue to be clamped inward, the outer caliper head 41 is changed to the inner caliper head 42, at this time, the two inner caliper heads 42 are pressed against the measured inner diameter or groove, the sensor detects the rotation angle α of the main caliper arm 10 and the sub caliper arm 20, the rotation angle α is converted into electric signal data and transmitted to the microprocessor, the microprocessor receives the electric signal data of the rotation angle α transmitted from the sensor 50, and calculates, the distance between the two ends of the main caliper arm 10 and the sub caliper arm 20, the distance sinx and the distance between the two caliper head R2 and the end of the caliper head 35 is displayed as a straight line X/X line (362).
The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. The digital caliper comprises a main caliper arm and an auxiliary caliper arm which are symmetrically arranged in the horizontal direction, wherein a caliper tail of the main caliper arm is rotatably connected with a caliper tail of the auxiliary caliper arm, and a caliper head of the main caliper arm and a caliper head of the auxiliary caliper arm are used for clamping a measured object; it is characterized in that the digital caliper further comprises:
the sensor is connected with the clamp tails of the main clamp arm and the auxiliary clamp arm, and is used for acquiring the rotation angle α of the main clamp arm and the auxiliary clamp arm, converting the rotation angle α into electric signal data and sending the electric signal data to the microprocessor;
the microprocessor is electrically connected with the sensor and used for receiving the electric signal data of the rotation angle α sent by the sensor and calculating to obtain the distance X between the two clamp heads of the main clamp arm and the auxiliary clamp arm;
the operation formula is that X is 2 R.sin (α/2), R is the straight line distance between the end part of the forceps head and the end part of the forceps tail;
the display screen is electrically connected with the microprocessor and is used for displaying the distance X calculated by the microprocessor;
and the power supply is electrically connected with the sensor, the microprocessor and the display screen and supplies power to the sensor, the microprocessor and the display screen.
2. The digital clamp of claim 1, wherein the tail of the primary clamp arm is pivotally hinged to the tail of the secondary clamp arm.
3. The digital clamp of claim 1, wherein the clamp head is detachably connected to the primary and secondary clamp arms.
4. The digital caliper according to claim 3, wherein the caliper heads are outer caliper heads or inner caliper heads, two outer caliper heads are symmetrically arranged, and two inner caliper heads are symmetrically arranged.
5. The digital clamp according to claim 4, wherein the outer clamp head is an arc-shaped structure extending inward of the main and auxiliary clamp arms, and the inner clamp head is an arc-shaped structure extending outward of the main and auxiliary clamp arms.
6. The digital caliper according to claim 1, wherein the sensor is a circular capacitive sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921480378.0U CN210268406U (en) | 2019-09-06 | 2019-09-06 | Digital caliper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921480378.0U CN210268406U (en) | 2019-09-06 | 2019-09-06 | Digital caliper |
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| Publication Number | Publication Date |
|---|---|
| CN210268406U true CN210268406U (en) | 2020-04-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921480378.0U Active CN210268406U (en) | 2019-09-06 | 2019-09-06 | Digital caliper |
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| CN (1) | CN210268406U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023229831A1 (en) * | 2022-05-27 | 2023-11-30 | Caterpillar Inc. | Systems and methods for determining thickness and/or diameter using computer vision |
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2019
- 2019-09-06 CN CN201921480378.0U patent/CN210268406U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023229831A1 (en) * | 2022-05-27 | 2023-11-30 | Caterpillar Inc. | Systems and methods for determining thickness and/or diameter using computer vision |
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