CN210346555U

CN210346555U - Circular diameter measurer

Info

Publication number: CN210346555U
Application number: CN201921806132.8U
Authority: CN
Inventors: 黄成伟
Original assignee: Hangzhou Pingcheng Machinery Co ltd
Current assignee: Hangzhou Pingcheng Machinery Co ltd
Priority date: 2019-10-24
Filing date: 2019-10-24
Publication date: 2020-04-17
Anticipated expiration: 2029-10-24

Abstract

The utility model relates to a circle diameter measurement ware relates to measuring equipment's technical field. When a disc-shaped product is measured by using the ruler, the ruler is directly placed on the surface of the disc-shaped product, and then reading is carried out, so that the ruler cannot be ensured to accurately pass through the circle center, and errors are easily caused in measurement; when the vernier caliper is used for measurement, the length needs to be adjusted for many times, the measurement takes a long time, and the operation is troublesome. The measuring device comprises a measuring rod, scale marks are marked on the outer peripheral wall of the measuring rod, and a first sliding block and a second sliding block are connected to the outer peripheral wall of the measuring rod in a sliding mode; a dial indicator is fixed on one side of the second sliding block close to the first sliding block, and a probe of the dial indicator is abutted against the outer peripheral wall of the disc-shaped product; the operator puts the disc product between first slider and second slider, rotates the measuring stick again, observes the reading of percentage table, can measure the diameter of disc product, and the operation is comparatively swift convenient.

Description

Circular diameter measurer

Technical Field

The utility model belongs to the technical field of measuring equipment's technique and specifically relates to a circle diameter measurement ware is related to.

Background

After disc-shaped products are processed in a factory, workers need to measure the diameters of the disc-shaped products to determine the error between the size of the processed disc-shaped products and the standard size, the disc-shaped products with larger errors are removed, qualified disc-shaped products are left, and the quality of the processed products is improved.

At present, when the diameter of a disc-shaped product is measured, a ruler or a vernier caliper is generally used for directly measuring the disc-shaped product. When the ruler is used for measurement, the ruler is directly placed on the surface of a disc-shaped product, reading is carried out, the ruler cannot be guaranteed to accurately pass through the circle center, and errors are easy to occur in measurement; when the vernier caliper is used for measurement, the length needs to be adjusted for many times, the measurement takes a long time, and the operation is troublesome.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a circle diameter measurement ware can be comparatively convenient and fast measure the diameter of circle.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme: a circular diameter measurer comprises a measuring rod, wherein the outer peripheral wall of the measuring rod is marked with scale marks, and a first sliding block and a second sliding block are connected to the outer peripheral wall of the measuring rod in a sliding mode; one side of the second sliding block, which is close to the first sliding block, is fixedly provided with a dial indicator, and a probe of the dial indicator is abutted against the peripheral wall of the disc-shaped product.

Through adopting above-mentioned technical scheme, the operator adjusts first slider and second slider to approximate length earlier, with the lateral wall butt of first slider in the periphery wall of disc product, with the probe butt of percentage table in the periphery wall of disc product, use first slider as the centre of a circle rotation measuring stick, make the second slider around the motion of disc product periphery wall, observe the reading of percentage table, when the reading of percentage table reaches the maximum value, the measuring stick passes through the centre of a circle of disc product this moment, observe the scale mark, add the reading of percentage table with the distance of first slider and second slider, be the diameter of disc product promptly. The operator only needs to rotate the measuring stick and can measure the diameter of disc product, and the operation is comparatively convenient and fast.

Preferably: the both ends of measuring stick all are connected with the stopper that is used for preventing first slider and second slider from deviating from.

Through adopting above-mentioned technical scheme, avoid the measuring stick when not using, first slider and second slider deviate from the measuring stick, lead to losing of first slider or second slider.

Preferably: and the two limiting blocks are respectively in threaded connection with two ends of the measuring rod.

By adopting the technical scheme, when the inner diameter of a disc-shaped product needs to be measured, the limiting blocks are taken out from the two ends of the measuring rod, the second sliding block is taken out, the dial indicator is far away from the first sliding block, and then the second sliding block slides to the outer peripheral wall of the measuring rod; the probe of the dial indicator can abut against the inner diameter of the disc-shaped product, and the inner diameter of the disc-shaped product is measured by adding the distance between the first sliding block and the second sliding block and the index of the dial indicator.

Preferably: the lower end of the first sliding block is fixedly provided with a reference rod, and one side of the reference rod, which is far away from the first sliding block, protrudes downwards and is arranged in an arc shape.

By adopting the technical scheme, an operator can rotate the measuring rod more easily by taking the reference rod as the circle center.

Preferably: the inner wall of the first sliding block is provided with a first ball groove, and a first ball is arranged in the first ball groove; a second ball groove is formed in the inner wall of the second sliding block, and a second ball is arranged in the second ball groove; the first ball and the second ball are both in rolling connection with the measuring rod.

By adopting the technical scheme, the friction between the first sliding block and the peripheral wall of the measuring rod is changed from sliding friction to rolling friction, so that the abrasion between the measuring rod and the first sliding block is reduced; the friction between the second slider and the outer peripheral wall of the measuring rod is changed from sliding friction to rolling friction, and the abrasion between the measuring rod and the second slider is reduced.

Preferably: the upper end of the first sliding block is connected with a handle.

Through adopting above-mentioned technical scheme, the operator can hold the handle and rotate the measuring stick, and it is more convenient to operate.

Preferably: the handle is connected to the upper side of the first sliding block in a threaded mode.

Through adopting above-mentioned technical scheme, when the operator with first slider butt in the periphery wall of disc product, turning handle makes the handle support tightly in the measuring stick to fixed first slider prevents that first slider from removing when measuring, causes measuring error.

Preferably: the peripheral wall of the handle is provided with friction lines.

Through adopting above-mentioned technical scheme, increase operator and the frictional force of handle, it is more convenient to make the operator grip the handle and rotate the measuring stick.

To sum up, the utility model discloses a beneficial technological effect does:

1. in the scheme, the diameter of the circle can be conveniently and rapidly measured by rotating the measuring rod, and the operation is simple and convenient;

2. in the scheme, the friction force between the first sliding block and the measuring rod is reduced through the arrangement of the first ball and the first ball groove, so that the abrasion is reduced, and the friction force between the second sliding block and the measuring rod is reduced through the arrangement of the second ball and the second ball groove, so that the abrasion is reduced;

3. in this scheme, through the orientation that changes the percentage table, both can measure the external diameter of circle and can measure the internal diameter of circle.

Drawings

Fig. 1 is a schematic structural diagram according to the present invention.

Fig. 2 is a sectional view of the present embodiment, showing the internal structure.

Fig. 3 is a partial structural schematic view of the first slider and the second slider in fig. 1.

Fig. 4 is an enlarged view at a in fig. 2.

In the figure, 1, a measuring rod; 11. scale lines; 2. a first slider; 21. a reference bar; 3. a second slider; 4. a dial indicator; 5. a limiting block; 51. a connecting portion; 52. a blocking portion; 53. a grip portion; 6. a handle; 61. rubbing the lines; 7. a communicating hole; 8. a first ball groove; 81. a first ball bearing; 9. a second ball groove; 91. a second ball.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1 and 2, the circular diameter measuring device disclosed in this embodiment includes a measuring rod 1, scale marks 11 are marked on the outer peripheral wall of the measuring rod 1, and a first slider 2 and a second slider 3 are slidably sleeved on the outer peripheral wall of the measuring rod 1; a reference rod 21 is fixed on the lower side of the first sliding block 2, and one end of the reference rod 21, which is far away from the first sliding block 2, is arranged in a downward convex manner; the upside threaded connection of first slider 2 has handle 6, the periphery wall of handle 6 is equipped with friction line 61, the operator grips handle 6 and conveniently uses benchmark pole 21 as the axle center, make measuring stick 1 rotate, the operator adjusts first slider 2 to suitable position after simultaneously, turning handle 6, make the part that handle 6 is located first slider 2 be close to measuring stick 1, part until first slider 2 is interior supports tightly in measuring stick 1, thereby fixed first slider 2, prevent that first slider 2 from unexpected removal and lead to the experiment to measure existence error.

Referring to fig. 2 and 3, the inner wall of the first sliding block 2 is provided with a plurality of first ball grooves 8, first balls 81 are arranged in the first ball grooves 8, the inner wall of the second sliding block 3 is provided with a plurality of second ball grooves 9, and second balls 91 are arranged in the second ball grooves 9; the first ball 81 and the second ball 91 are in rolling connection with the measuring rod 1, when the first sliding block 2 and the second sliding block 3 slide on the outer peripheral wall of the measuring rod 1, the sliding friction is converted into rolling friction through the first ball 81 and the second ball 91, abrasion between the first sliding block 2 and the second sliding block 3 and the measuring rod 1 is reduced, and the service life is prolonged.

Referring to fig. 1 and 4, a dial indicator 4 is connected to one side of the second sliding block 3 close to the first sliding block 2, and a probe of the dial indicator 4 abuts against the outer peripheral wall of the disc-shaped product; the both ends surface of measuring stick 1 is opened there is intercommunicating pore 7, and the both ends of measuring stick 1 are equipped with stopper 5, stopper 5 includes connecting portion 51, fixed connection is in the barrier 52 of connecting portion 51 one end, fixed connection is in the grip 53 of connecting portion 51 one side is kept away from to barrier 52, connecting portion 51 threaded connection is in intercommunicating pore 7, the diameter of barrier 52 is greater than the diameter of measuring stick 1, make first slider 2 and second slider 3 unable follow measuring stick 1 periphery wall and deviate from, grip 53 makes things convenient for the operator to dismantle stopper 5, when the operator need measure the internal diameter of disc product, transfer into measuring stick 1 with 3 faces of second slider, make percentage table 4 be located the one side that first slider 2 was kept away from to second slider 3, can measure the internal diameter of disc product.

The implementation principle of the embodiment is as follows: an operator firstly adjusts the first sliding block 2 and the second sliding block 3 to approximate lengths, and then screws the handle 6 to enable the handle 6 to be tightly abutted against one side of the measuring rod 1, so that the first sliding block 2 is fixed, and the first sliding block 2 is prevented from moving to cause experimental errors; abutting the side wall of the first sliding block 2 against the outer peripheral wall of the disc-shaped product, abutting the probe of the dial indicator 4 against the outer peripheral wall of the disc-shaped product, rotating the measuring rod 1 by taking the reference rod 21 as a circle center, enabling the second sliding block 3 to move around the outer peripheral wall of the disc-shaped product, observing the reading of the dial indicator 4, when the reading of the dial indicator 4 reaches the maximum value, enabling the measuring rod 1 to pass through the circle center of the disc-shaped product, observing the scale mark 11, and adding the reading of the dial indicator 4 to the distance between the first sliding block 2 and the second sliding block 3 to obtain the diameter of the disc-shaped;

when an operator needs to measure the inner diameter of a disc-shaped product, the second sliding block 3 is turned to the measuring rod 1, the dial indicator 4 is located on one side, away from the first sliding block 2, of the second sliding block 3, the reading of the dial indicator 4 is observed, when the reading of the dial indicator 4 reaches the maximum value, the measuring rod 1 passes through the circle center of the disc-shaped product at the moment, the scale mark 11 is observed, the reading of the dial indicator 4 is added to the distance between the first sliding block 2 and the second sliding block 3, and the reading is the outer diameter of the disc-shaped product.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. A circular diameter measuring device comprises a measuring rod (1), and is characterized in that: the outer peripheral wall of the measuring rod (1) is marked with scale marks (11), and the outer peripheral wall of the measuring rod (1) is connected with a first sliding block (2) and a second sliding block (3) in a sliding mode; one side of the second sliding block (3) close to the first sliding block (2) is fixed with a dial indicator (4), and a probe of the dial indicator (4) is abutted to the outer peripheral wall of the disc-shaped product.

2. A circular diameter measuring device according to claim 1, wherein: both ends of measuring stick (1) all are connected with stopper (5) that are used for preventing first slider (2) and second slider (3) to deviate from.

3. A circular diameter measuring device according to claim 2, wherein: the two limiting blocks (5) are respectively in threaded connection with two ends of the measuring rod (1).

4. A circular diameter measuring device according to claim 1, wherein: the lower end of the first sliding block (2) is fixed with a reference rod (21), and one side, away from the first sliding block (2), of the reference rod (21) protrudes downwards to form an arc.

5. A circular diameter measuring device according to claim 1, wherein: a first ball groove (8) is formed in the inner wall of the first sliding block (2), and a first ball (81) is arranged in the first ball groove (8); a second ball groove (9) is formed in the inner wall of the second sliding block (3), and a second ball (91) is arranged in the second ball groove (9); the first ball (81) and the second ball (91) are in rolling contact with the measuring rod (1).

6. A circular diameter measuring device according to claim 1, wherein: the upper end of the first sliding block (2) is connected with a handle (6).

7. A circular diameter measuring device according to claim 6, wherein: the handle (6) is connected to the upper side of the first sliding block (2) in a threaded mode.

8. A circular diameter measuring device according to claim 6, wherein: the peripheral wall of the handle (6) is provided with friction grains (61).