CN221840321U - Device for measuring the angle of a workpiece - Google Patents

Abstract

The utility model discloses a device for measuring the angle of a workpiece, belongs to the technical field of measuring tools, and aims to solve the technical problem that the angle of a V-shaped groove is inconvenient to measure in the prior art. The device comprises an arc-shaped support, wherein an angle measuring assembly is arranged at the upper end of the arc-shaped support, a workpiece to be measured is arranged at the lower end of the arc-shaped support, and the angle measuring assembly is used for measuring the angle to be measured in the workpiece to be measured; the angle measurement assembly comprises a shell, a threaded rod is movably connected in the shell, a rotating part is arranged at the upper end of the threaded rod, and a connecting block is arranged at the lower end of the threaded rod; the connecting block is used for detachably connecting different measuring units. The device for measuring the angle of the workpiece is simple in structure and convenient to install, can adapt to various working conditions, reduces the measuring cost and improves the measuring efficiency.

Description

Device for measuring the angle of a workpiece

Technical Field

The utility model relates to the technical field of measuring tools, in particular to a device for measuring the angle of a workpiece.

Background Art

Angle measurement is a common task in geometry and physics. Measuring the angle of a plane line is easier than measuring the angle of a geometric body. Geometric profiles are the most common in engineering applications. Some profiles have V-grooves or flared grooves similar to V-grooves (hereinafter collectively referred to as "V-grooves"). Due to the increasing requirements for V-groove angles and the continuous development of manufacturing technology, the requirements for measurement technology or devices are also getting higher and higher. Traditional measuring devices such as vernier calipers, angle gauges, and depth gauges can no longer meet some high-precision measurement needs, and may be affected by the structure of the workpiece. The measurement process may be quite inconvenient and inefficient.

In order to solve this problem, some modern measurement technology methods have emerged, such as electronic measurement method, which uses electronic equipment to measure angles. Common electronic angle measurement devices include sensors and goniometers. Other measurement methods have been derived from electronic measurement methods, such as three-coordinate measurement method, which can accurately measure and has high precision, and can meet high-precision measurement needs. However, the detection cost of electronic measurement methods is high and may not be suitable for large-scale detection; in addition, the measurement of V-groove angles is also affected by the material and shape of the workpiece. Some workpiece materials may have high hardness and complex shapes, which may affect the measurement results. Therefore, it is also very important to choose the right measurement method and equipment.

Utility Model Content

The utility model aims to provide a device for measuring the angle of a workpiece, so as to solve the technical problem of inconvenient V-groove angle measurement in the prior art.

In order to achieve the above purpose, the utility model provides the following technical solutions:

The utility model provides a device for measuring the angle of a workpiece, comprising an arched support, an angle measuring assembly is arranged at the upper end of the arched support, a workpiece to be measured is arranged at the lower end of the arched support, and the angle measuring assembly is used to measure the angle to be measured in the workpiece to be measured;

The angle measurement assembly comprises a shell, a threaded rod is movably connected inside the shell, a rotating portion is arranged at the upper end of the threaded rod, and a connecting block is arranged at the lower end of the threaded rod; the connecting block is used for detachably connecting different measuring units.

Optionally or preferably, the measuring unit comprises a connecting portion and a measuring portion, and the measuring portion is connected to the connecting block via the connecting portion.

Optionally or preferably, the number of the measuring units is two; the two measuring units have measuring parts of different sizes.

Optionally or preferably, a scale is provided on the outer surface of the measuring part.

Optionally or preferably, the connecting portion and the connecting block are connected via a snap-fit connection.

Based on the above technical solution, the utility model can at least produce the following technical effects:

The utility model provides a device for measuring the angle of a workpiece, which obtains original parameters through a measuring unit and can obtain accurate V-groove angle values after mathematical calculation; the device has a simple structure and is easy to install, can adapt to various working conditions, reduce measurement costs, and improve measurement efficiency.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic structural diagram of a device for measuring the angle of a workpiece according to the present invention;

FIG2 is a second structural schematic diagram of the device for measuring the angle of a workpiece according to the present invention;

FIG. 3 is a schematic diagram of the calculation principle of the device for measuring the angle of a workpiece according to the present invention.

In the figure: 1, bow support; 2, workpiece to be measured; 3, housing; 4, threaded rod; 5, rotating part; 6, connecting block; 7, measuring unit; 71, connecting part; 72, measuring part.

DETAILED DESCRIPTION

The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model; obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the utility model without making creative work belong to the scope of protection of the utility model.

Example

Please refer to Figures 1 to 3, a device for measuring the angle of a workpiece includes an arch support 1, an angle measuring component is arranged on the upper end of the arch support 1, and a workpiece 2 to be measured is arranged on the lower end, wherein the side of the workpiece 2 to be measured having the angle to be measured should be opposite to the above-mentioned angle measuring component.

In this embodiment, the angle measurement assembly includes a housing 3, a threaded rod 4 is connected to the inner thread of the housing 3, a rotating portion 5 is fixedly connected to the upper end of the threaded rod 4, and a connecting block 6 is fixedly connected to the lower end of the threaded rod 4. The connecting block 6 is used for detachably connecting different measuring units 7. In actual work, personnel can adjust the position of the measuring unit 7 by screwing the rotating portion 5 to move the threaded rod 4 up and down along its axial direction.

In this embodiment, the measuring unit 7 includes a connecting portion 71 at the upper end and a measuring portion 72 at the lower end, and the connecting portion 71 and the measuring portion 72 are integrally formed or spliced; wherein a protrusion is provided on the connecting portion 71, and a slot is provided on the connecting block 6, and the connecting portion 71 and the connecting block 6 can be connected by the protrusion and the slot, and the measuring portion 72 can be connected to the connecting block 6 through the connecting portion 71, and then connected to the threaded rod 4; in addition, a scale is provided on the outer surface of the measuring portion 72 to facilitate reading by personnel.

In this embodiment, there are two measuring units 7, including a large measuring rod having a larger diameter measuring portion 72 and a small measuring portion having a smaller diameter measuring portion 72; FIG1 shows a schematic diagram of the device structure when the measuring portion 72 is a large measuring rod, and FIG2 shows a schematic diagram of the device structure when the measuring portion 72 is a small measuring rod; for ease of understanding, FIG3 shows a measurement principle diagram, in which the outer measuring portion 72 is a larger measuring rod, and the inner measuring portion is a smaller small measuring rod.

The utility model provides a device for measuring the angle of a workpiece, and its specific measuring method comprises the following steps:

S1. Measure the length L ₁ and diameter D ₁ of the large measuring rod by a micrometer or a self-made measuring tool, and then calculate the radius R ₁ , where R ₁ = D ₁ /2; similarly, measure the length L ₂ and diameter D ₂ of the small measuring rod, and then calculate the radius R ₂ , where R ₂ = D ₂ /2.

S2. Align the axis of the large measuring rod with the angular bisector of the V-groove in the workpiece 2 to be measured, and abut the lower end of the large measuring rod against the V-groove; at this time, the total length H ₁ of the abutment between the large measuring rod and the workpiece 2 to be measured is obtained by a micrometer, a homemade measuring tool or reading; similarly, the total length H ₂ of the abutment between the small measuring rod and the workpiece 2 to be measured is measured;

S3, obtaining the radius difference ΔR between the large measuring rod and the small measuring rod by numerical calculation in S1, wherein ΔR＝R ₁ -R ₂ ; obtaining the depth difference ΔX between the large measuring rod and the small measuring rod in the measured workpiece by numerical calculation in S1 and S2, wherein ΔX＝(H ₁ -L ₁ )-(H ₂ -L ₂ );

S4. The ΔR and ΔX obtained in step S3 have the following functional relationship with the V-groove angle α in the workpiece 2 to be measured:

α/2＝arctan(ΔR/ΔX)

According to the above relationship, the V-groove angle α in the workpiece 2 to be measured can be obtained as:

α＝2×arctan(ΔR/ΔX)

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims (5)

1. The device for measuring the angle of the workpiece is characterized by comprising an arc-shaped support (1), wherein an angle measuring assembly is arranged at the upper end of the arc-shaped support (1), the workpiece (2) to be measured is arranged at the lower end of the arc-shaped support (1), and the angle measuring assembly is used for measuring the angle to be measured in the workpiece (2) to be measured;

The angle measurement assembly comprises a shell (3), a threaded rod (4) is movably connected in the shell (3), a rotating part (5) is arranged at the upper end of the threaded rod (4), and a connecting block (6) is arranged at the lower end of the threaded rod (4); the connecting block (6) is used for detachably connecting different measuring units (7).

2. Device for measuring the angle of a workpiece according to claim 1, characterized in that the measuring unit (7) comprises a connecting part (71) and a measuring part (72), the measuring part (72) being connected to the connecting block (6) via the connecting part (71).

3. The device for measuring the angle of a workpiece according to claim 2, characterized in that the number of the measuring units (7) is two; the two measuring units (7) have measuring sections (72) of different sizes.

4. A device for measuring the angle of a workpiece according to claim 3, characterized in that the outer side surface of the measuring part (72) is provided with a graduated scale.

5. A device for measuring the angle of a workpiece according to claim 3, characterized in that the connection (71) is connected to the connection block (6) by means of a snap-fit connection.