Knob adjustment wrench for bearing measuring instrument

Abstract

The utility model belongs to the technical field of knob adjusting wrench, disclose a knob adjusting wrench for bearing measuring instrument, including handle and the first knob part and the second knob part connected with both sides, the central region of first rotation part is provided with first cross head, the four sides of first cross head are the arc of outward bending, the four corners of first cross head are the arc of inward bending, the arc of first cross head four sides and the arc of first cross head four corners are tangent, the central region of second knob part is provided with second cross head, second cross head is provided with the concentricity of second knob part, the four sides of second cross head are the arc of inward bending, the four corners of second cross head are the arc of inward bending, the arc of second cross head four sides and the arc of second cross head four corners are tangent, the utility model has improved the pre-tightening force, has reduced single time adjustment time and the adjustment number of times of measuring process, can adapt the adjustment knob of a variety of model bearing measuring instrument, and the manufacturing cost is low.

Description

Technical Field

[0001] This utility model belongs to the technical field of knob adjustment wrenches, specifically relating to a knob adjustment wrench for a bearing measuring instrument. Background Technology

[0002] In the measurement of various dimensions of rolling elements, bearing measuring instruments typically require adjusting knobs to fix the position of the measuring instruments and the base. Traditionally, the adjustment of the knobs relies on manual adjustment of the tightness. However, the knobs are small and difficult to grip by hand. In field use, many surfaces are oily, and when hands are oily, it is easy to slip and difficult to apply force when operating them by hand. When adjusting the knobs, insufficient preload can easily occur, resulting in the knobs not being tightened properly. This causes the measuring instruments (such as torsion spring comparators, lever gear comparators, etc.) to be loosely fixed, leading to instrument backing up after multiple measurements, resulting in measurement deviations and affecting data accuracy. At the same time, prolonged operation can easily injure fingers and reduce work efficiency.

[0003] Currently, bearing measuring instrument manufacturers do not provide special tools for this type of knob, and regular wrenches cannot be used due to their mismatched shape and size. Utility Model Content

[0004] The technical solution adopted by this utility model is: a knob adjustment wrench for a bearing measuring instrument, including a handle, with a first knob part and a second knob part connected to both sides of the handle. The first knob part is circular, and a first cross-shaped notch is provided in the central area of ​​the first knob part. The first cross-shaped notch is concentrically arranged with the first knob part, and its size occupies 70-90% of the size of the first knob part. The four sides of the first cross-shaped notch are outwardly curved arcs, and the four corners are inwardly curved arcs. The arcs on the four sides of the first cross-shaped notch are tangent to the arcs at the four corners of the first cross-shaped notch. The second knob part is circular, and the second knob part... A second cross-shaped latch is provided in the central area, and the second cross-shaped latch is concentric with the second knob. The size of the second cross-shaped latch occupies 70-90% of the size of the second knob. The four sides of the second cross-shaped latch are inwardly curved arcs, and the four corners of the second cross-shaped latch are inwardly curved arcs. The arcs on the four sides of the second cross-shaped latch are tangent to the arcs at the four corners. The size of the second knob is 1.3-1.8 times that of the first knob, and the size of the second cross-shaped latch is 1.3-1.8 times that of the first cross-shaped latch. The dimensions of the first and second cross-shaped latches are adapted to the size of the adjustment knob of the bearing measuring instrument.

[0005] The first knob, the second knob, and the handle are manufactured using an integral stamping process.

[0006] Both the first and second cross-shaped bayonets consist of two mutually perpendicular intersecting grooves.

[0007] The middle part of the handle has an inwardly curved groove, or horizontally arranged raised lines, or a pressure groove or surface texture.

[0008] The first knob, the second knob, and the handle are made of carbon steel, stainless steel, or chrome vanadium alloy steel.

[0009] The inner surfaces of the first and second cross-shaped bayonets are provided with anti-slip textures.

[0010] The beneficial effects of this utility model are as follows:

[0011] This invention improves the preload and reduces the time required for a single operation through a lever design. The tightened adjustment knob is resistant to loosening, and the preload is significantly improved. The instrument is less likely to back out during measurement, reducing the number of adjustments required and improving measurement efficiency. It also avoids direct friction between the worker's fingers and the knob, eliminating the risk of strangulation injuries. By selecting different sizes of cross-shaped jaws, it can be adapted to the adjustment knobs of various bearing measuring instruments. Furthermore, the entire device can be mass-produced using a stamping process, resulting in low manufacturing costs. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0013] Figure 2 This is a three-dimensional structural diagram of the present invention.

[0014] The markings in the diagram are: 1. Handle; 2. First knob part; 21. First cross-shaped latch; 3. Second knob part; 31. Second cross-shaped latch. Detailed Implementation

[0015] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings.

[0016] As shown in the figure, a knob adjustment wrench for a bearing measuring instrument includes a handle 1. The handle 1 has horizontally arranged protruding lines in its middle section. A first knob part 2 and a second knob part 3 are connected to both sides of the handle 1. The first knob part 2, the second knob part 3, and the handle 1 are manufactured using an integral stamping process. The first knob part 2, the second knob part 3, and the handle 1 are made of carbon steel. The first knob part 2 is circular, with a first cross-shaped notch 21 in its center. The first cross-shaped notch 21 is concentric with the first knob part 2, and its size occupies 70-90% of the first knob part 2. The four sides of the first cross-shaped notch 21 are outwardly curved arcs, and the four corners are inwardly curved arcs. The arcs on the four sides of the first cross-shaped notch 21 are tangent to the arcs at the four corners. The second knob part 3 is circular, with its center... The area is provided with a second cross-shaped latch 31, which is concentrically arranged with the second knob part 3. The size of the second cross-shaped latch 31 occupies 70-90% of the size of the second knob part 3. The four sides of the second cross-shaped latch 31 are inwardly curved arcs, and the four corners of the second cross-shaped latch 31 are inwardly curved arcs. The arcs on the four sides of the second cross-shaped latch 31 are tangent to the arcs at the four corners of the second cross-shaped latch 31. The size of the second knob part 3 is 1.3-1.8 times that of the first knob part 2, and the size of the second cross-shaped latch 31 is 1.3-1.8 times that of the first cross-shaped latch 21. Both the first cross-shaped latch 21 and the second cross-shaped latch 31 are composed of two mutually perpendicular intersecting grooves. The inner surfaces of the first cross-shaped latch 21 and the second cross-shaped latch 31 are provided with anti-slip textures. The dimensions of the first cross-shaped latch 21 and the second cross-shaped latch 31 are adapted to the size of the adjustment knob of the bearing measuring instrument.

[0017] When in use, select a cross-shaped jaw of matching size and engage it with the adjustment knob of the bearing measuring instrument. Turn handle 1 to adjust the adjustment knob. This utility model improves the preload and reduces the single operation time through the lever design. The tightened adjustment knob is resistant to loosening, the preload is significantly improved, and the instrument is less likely to back out during the measurement process, reducing the number of adjustments and improving measurement efficiency. It avoids direct friction between the worker's fingers and the knob, eliminating the risk of strangulation. By selecting cross-shaped jaws of different sizes, it can be adapted to the adjustment knobs of various bearing measuring instruments. At the same time, the entire equipment can be mass-produced using stamping technology, resulting in low manufacturing costs.

Claims

1. A knob adjustment wrench for a bearing measuring instrument, comprising a handle (1), with a first knob portion (2) and a second knob portion (3) connected to both sides of the handle (1), characterized in that: The first knob part (2) is circular, with a first cross-shaped latch (21) in the center area. The first cross-shaped latch (21) is concentric with the first knob part (2). The size of the first cross-shaped latch (21) occupies 70-90% of the first knob part (2). The four sides of the first cross-shaped latch (21) are outwardly curved arcs, and the four corners of the first cross-shaped latch (21) are inwardly curved arcs. The arcs on the four sides of the first cross-shaped latch (21) are tangent to the arcs at the four corners of the first cross-shaped latch (21). The second knob part (3) is circular, with a second cross-shaped latch in the center area. The second cross-shaped latch (31) is concentric with the second knob part (3). The second cross-shaped latch (31) is 70-90% the size of the second knob part (3). The four sides of the second cross-shaped latch (31) are inwardly curved arcs, and the four corners of the second cross-shaped latch (31) are inwardly curved arcs. The arcs on the four sides of the second cross-shaped latch (31) are tangent to the arcs at the four corners of the second cross-shaped latch (31). The size of the second knob part (3) is 1.3-1.8 times that of the first knob part (2), and the size of the second cross-shaped latch (31) is 1.3-1.8 times that of the first cross-shaped latch (21). The dimensions of the first cross-shaped latch (21) and the second cross-shaped latch (31) are adapted to the size of the adjustment knob of the bearing measuring instrument.

2. A knob adjustment wrench for a bearing measuring instrument according to claim 1, characterized in that: The first knob (2), the second knob (3), and the handle (1) are manufactured using an integral stamping process.

3. A knob adjustment wrench for a bearing measuring instrument according to claim 1, characterized in that: Both the first cross-shaped bayonet (21) and the second cross-shaped bayonet consist of two mutually perpendicular intersecting grooves.

4. A knob adjustment wrench for a bearing measuring instrument according to claim 1, characterized in that: The handle (1) has an inwardly curved groove or a horizontally arranged protruding line or a force-applying groove or surface texture in the middle part.

5. A knob adjustment wrench for a bearing measuring instrument according to claim 1, characterized in that: The first knob (2), the second knob (3), and the handle (1) are made of carbon steel, stainless steel, or chromium vanadium alloy steel.

6. A knob adjustment wrench for a bearing measuring instrument according to claim 1, characterized in that: The inner surfaces of the first cross-shaped bayonet (21) and the second cross-shaped bayonet (31) are provided with anti-slip textures.

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