Measurement fixing tool convenient to position
By designing a measurement fixture with ABC three-point reference positioning, the problem of inaccurate manual positioning was solved, enabling rapid and accurate positioning of products, improving measurement efficiency and applicability, and making it suitable for measuring products of different diameters.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- PANGEO HUNAN IND
- Filing Date
- 2025-04-28
- Publication Date
- 2026-04-24
AI Technical Summary
In existing technologies, the position of products is not fixed due to manual placement during the product measurement process, which increases the measurement time cost and positioning error, makes it difficult to achieve uniform positioning of products with different diameters, and reduces the reliability of measurement results and production efficiency.
A measuring fixture comprising a base, a positioning block, a positioning rod, and a clamping spring was designed. It achieves three-point (ABC) reference positioning by combining two-point and one-point positioning. The pressure of the clamping spring is adjusted by using a threaded connection to adapt to the force requirements of different operators.
It achieves accurate and stable positioning of products, improves the accuracy of measurement results and production efficiency, reduces measurement preparation time and equipment costs, and is applicable to similar products of different diameters.
Smart Images

Figure CN224158309U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of tooling fixture equipment technology, specifically to a measuring and fixing tooling that is easy to position. Background Technology
[0002] Measurement fixtures serve as crucial tools for assisting product measurement. In numerous industrial production scenarios, including machinery manufacturing, electronic equipment production, and automotive parts processing, precise product measurement is indispensable to ensure that products meet design standards and usage requirements.
[0003] In the past, product measurement was generally carried out manually. This method has many drawbacks. Because it's difficult for operators to ensure consistent placement each time, the product's position is inconsistent. To obtain accurate measurements, the ABC reference point needs to be repositioned. This not only increases measurement time and reduces production efficiency but also increases the risk of positioning errors due to human factors, affecting the reliability of the measurement results. Furthermore, for products of the same type but different diameters, manual placement makes it even more difficult to achieve uniform and accurate positioning, further complicating and challenging the measurement process. Utility Model Content
[0004] To solve the above problems, this utility model proposes a measurement fixture that is easy to position, including a base, a positioning block fixed on the top of the base, and two lower positioning parts fixed on the top of the positioning block; two positioning rods are provided above both ends of the base, and an upper pressure block is slidably connected to the two positioning rods; an upper positioning part is fixed at the bottom middle of the upper pressure block; an adjustment block is provided on the outside of the positioning rod above the upper pressure block; a compression spring is provided between the adjustment block and the upper pressure block; the compression spring is sleeved on the outside of the positioning rod; and the rear walls of the upper positioning part and the lower positioning part are on the same horizontal plane.
[0005] Furthermore, the outer surface of the positioning rod is provided with external threads, and the inner wall of the adjusting block is provided with internal threads that are compatible with it. The adjusting block is threadedly connected to the positioning rod, so that the upper and lower positions of the adjusting block can be adjusted to adjust the pressure of the clamping spring on the upper pressure block.
[0006] Furthermore, a limiting rod is fixed to the bottom of the positioning rod, and the bottom of the limiting rod is fixed to the top of the positioning block. The diameter of the limiting rod is larger than the diameter of the positioning rod.
[0007] Furthermore, the two lower positioning parts are mirror images of each other, and the two lower positioning parts are tilted towards each other in the direction of the top.
[0008] The beneficial effects of this utility model are as follows:
[0009] 1. This measuring fixture achieves three-point (ABC) datum positioning by using two-point positioning at the lower positioning part, one-point positioning at the upper positioning part, and subsequent positioning by adhering to the A-datum of the lower and upper positioning parts. This accurately and stably determines the product's position, effectively avoiding the problem of inconsistent positioning when manually placing the product, greatly improving positioning accuracy, and thus ensuring the accuracy of the measurement results.
[0010] 2. Because the tooling can quickly and accurately position the product, there is no need to reposition the ABC reference during measurement, reducing preparation time before measurement and improving measurement efficiency. Especially when measuring products in batches, it can significantly shorten the measurement cycle and improve production efficiency.
[0011] 3. This fixture can be used for products of different diameters but of the same type. The pressure of the clamping spring can be adjusted by adjusting the adjustment block, making it convenient for operators with different strengths to use the fixture. This makes the fixture more widely applicable and reduces the cost of measuring equipment for enterprises. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0013] Figure 2 This is a front view structural diagram of the present utility model;
[0014] Figure 3 This is a schematic diagram of the right-side structure of this utility model.
[0015] The reference numerals in the attached drawings are explained as follows: 1. Base; 2. Positioning block; 3. Lower positioning part; 4. Positioning rod; 41. External thread; 5. Upper pressure block; 6. Upper positioning part; 7. Adjusting block; 8. Compression spring; 9. Limiting rod; 10. Product. Detailed Implementation
[0016] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0017] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0018] The present invention will be further described below with reference to the accompanying drawings:
[0019] A measuring fixture that is easy to position, such as Figure 1 , Figure 2 and Figure 3 As shown, the system includes a base 1, a positioning block 2 fixed to the top of the base 1, and two lower positioning parts 3 fixed to the top of the positioning block 2. The two lower positioning parts 3 are mirror images of each other and are inclined towards each other at the top. Two positioning rods 4 are provided above both ends of the base 1, and upper pressure blocks 5 are slidably connected to the two positioning rods 4. An upper positioning part 6 is fixed to the middle of the bottom of the upper pressure block 5. The rear walls of the upper positioning part 6 and the lower positioning part 3 are on the same horizontal plane. An adjusting block 7 is provided above the upper pressure block 5 on the outside of the positioning rod. A compression spring 8 is provided between the adjusting block 7 and the upper pressure block 5 and is sleeved on the outside of the positioning rod 4. A limiting rod 9 is fixed to the bottom of the positioning rod 4. The bottom of the limiting rod 9 is fixed to the top of the positioning block 2, and the diameter of the limiting rod 9 is larger than the diameter of the positioning rod 4.
[0020] Positioning block 2 is positioned at two points with product 10 through two lower positioning parts 3, and upper pressure block 5 is positioned at one point with product 10 through upper positioning part 6, thereby achieving BC datum stability. Product 10 is then pressed tightly against the lower positioning parts 3 and upper positioning parts 6, and A datum positioning is added to achieve ABC three-point datum positioning. This structure can be used for positioning of parts of different diameters and the same type.
[0021] The base 1 provides support, the positioning block 2 and the lower positioning part 3 are used for initial positioning of product 10, the two positioning rods 4 guide the upper pressure block 5, the upper pressure block 5 and the upper positioning part 6 cooperate with the lower positioning part 3 for further positioning, the adjusting block 7, the clamping spring 8 and the limiting rod 9 work together, the adjusting block 7 and the clamping spring 8 adjust the pressure of the upper pressure block 5, and the limiting rod 9 restricts the downward position of the upper pressure block 5, thus constructing a stable and adjustable positioning system framework, laying the foundation for achieving precise three-point positioning of product 10, and adapting to the positioning needs of different types of parts.
[0022] like Figure 1 and Figure 2As shown, in this embodiment, the outer surface of the positioning rod 4 is provided with an external thread 41, and the inner wall of the adjusting block 7 is provided with an internal thread that matches it. The adjusting block 7 is threadedly connected to the positioning rod 4, so that the upper and lower positions of the adjusting block 7 can be adjusted to adjust the pressure of the compression spring 8 on the upper pressure block 5, which is convenient for operators with different strengths to use.
[0023] The adjusting block 7 can move up and down through a threaded connection, thereby adjusting the pressure of the clamping spring 8 on the product 10; this allows the tooling to adapt to different operator strengths, ensuring the positioning effect of the product 10 regardless of the amount of force applied by the operator, and improving the versatility and practicality of the tooling.
[0024] The working principle of this utility model is as follows:
[0025] When it is necessary to measure product 10, first lift the upper pressure block 5 and place product 10 between the two lower positioning parts 3. Since the two lower positioning parts 3 are tilted towards each other at the top, product 10 will naturally form two-point contact with the lower positioning parts 3 under the action of gravity and its own shape, thereby initially determining the BC reference of product 10.
[0026] Next, the upper pressure block 5 is slowly released, and under the action of the compression spring 8, the upper pressure block 5 slides downward along the positioning rod 4. The upper positioning part 6 at the bottom of the upper pressure block 5 gradually approaches the product 10 and eventually contacts the product 10, forming a point positioning. At this time, the upper positioning part 6 and the lower positioning part 3 work together to make the product 10 more accurately positioned in the horizontal direction, further stabilizing the BC reference.
[0027] Then, the product 10 is moved to be close to the lower positioning part 3 and the upper positioning part 6, thereby adding A-reference positioning. At this point, the three-point A, B, and C reference positioning is achieved, enabling the product 10 to be accurately and stably positioned on the measuring fixture.
[0028] In actual operation, different operators may use different forces to place product 10. To accommodate this difference, the vertical position of the adjusting block 7 on the positioning rod 4 can be adjusted by rotating the adjusting block 7. When the adjusting block 7 moves upward, the compression of the clamping spring 8 decreases, and the pressure on the upper pressure block 5 also decreases; when the adjusting block 7 moves downward, the compression of the clamping spring 8 increases, and the pressure on the upper pressure block 5 increases accordingly. In this way, operators with different strengths can easily use this fixture, ensuring that product 10 is accurately positioned under different operating conditions.
[0029] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.
Claims
1. A measuring fixture for easy positioning, comprising a base (1), characterized in that: The top of the base (1) is fixed with a positioning block (2), and the top of the positioning block (2) is fixed with two lower positioning parts (3); two positioning rods (4) are provided above both ends of the base (1), and an upper pressure block (5) is provided and slidably connected to the two positioning rods (4). An upper positioning part (6) is fixed at the bottom middle of the upper pressure block (5). An adjustment block (7) is provided on the outside of the positioning rod (4) above the upper pressure block (5). A compression spring (8) is provided between the adjustment block (7) and the upper pressure block (5). The compression spring (8) is sleeved on the outside of the positioning rod (4). The rear walls of the upper positioning part (6) and the lower positioning part (3) are on the same horizontal plane.
2. The measuring fixture for easy positioning according to claim 1, characterized in that: The outer surface of the positioning rod (4) is provided with an external thread (41), and the inner wall of the adjusting block (7) is provided with an internal thread that matches it. The adjusting block (7) is threadedly connected to the positioning rod (4), so that the upper and lower positions of the adjusting block (7) can be adjusted to adjust the pressure of the clamping spring (8) on the upper pressure block (5).
3. The measuring fixture for easy positioning according to claim 1, characterized in that: The bottom of the positioning rod (4) is fixed with a limiting rod (9), the bottom of the limiting rod (9) is fixed with the top of the positioning block (2), and the diameter of the limiting rod (9) is greater than the diameter of the positioning rod (4).
4. The measuring fixture for easy positioning according to claim 1, characterized in that: The two lower positioning parts (3) are mirrored and tilted toward each other towards the top.