Deflection inspection tool for high-pressure oil rail
By designing a high-pressure oil rail deflection inspection fixture, and combining the arc-shaped groove structure of the base and support, efficient deflection measurement and straightening were achieved, solving the problems of low inspection efficiency and high labor intensity of employees in the existing technology, and improving product quality and customer satisfaction.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- BAICHENG ZHONGYI PRECISION FORGING
- Filing Date
- 2025-05-19
- Publication Date
- 2026-05-01
AI Technical Summary
Existing technologies have low efficiency in inspecting the deflection of high-pressure oil rails, which cannot meet the production cycle requirements. Furthermore, products with deflection exceeding the tolerance need to be straightened separately, resulting in high labor intensity for employees and low inspection efficiency.
A high-pressure oil rail deflection inspection fixture is designed, including a base and two supports. The supports are provided with arc-shaped grooves for measuring and straightening the deflection of the high-pressure oil rail, achieving straightening while measuring deflection, thus reducing manual operation.
It improved inspection efficiency and product quality, reduced the labor intensity of employees, and enhanced inspection accuracy and customer satisfaction.
Smart Images
Figure CN224189473U_ABST
Abstract
Description
A high-pressure oil rail deflection inspection fixture Technical Field
[0001] This utility model relates to the field of high-pressure oil rail processing technology, and in particular to a high-pressure oil rail deflection inspection fixture. Background Technology
[0002] High-pressure fuel rail forgings are mainly used in high-end vehicles with traditional internal combustion engines. The primary functions of stainless steel high-pressure fuel rails are to reduce engine noise, optimize injection timing and fuel quality variations, and facilitate cold starts. Compared to conventional shaft products, stainless steel high-pressure fuel rails have stricter requirements for deflection. Excessive deflection can affect machining and assembly, necessitating 100% deflection inspection. Defective products require straightening to ensure compliance. While coordinate measuring machines (CMMs) can measure deflection, their low efficiency cannot meet production cycle requirements. Furthermore, defective parts with excessive deflection after inspection require separate straightening, resulting in lengthy processes and high labor intensity for employees.
[0003] Therefore, it is necessary to design a high-pressure oil rail deflection inspection fixture to improve the above-mentioned problems. Summary of the Invention
[0004] To address the aforementioned problems in the prior art, this utility model provides a high-pressure oil rail deflection inspection fixture, which improves inspection efficiency and product quality, reduces labor intensity, and enhances customer satisfaction.
[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0006] A high-pressure oil rail deflection inspection fixture includes a base and a feeler gauge. The upper surface of the base is flat. A first support and a second support are respectively provided on both sides of the base. The upper edges of the first support and the second support are chamfered. The upper middle part of the first support is provided with a first arc-shaped groove with a radius of 15.4 mm. The upper middle part of the second support is provided with a second arc-shaped groove with a radius of 9.6 mm. The width of the first support is greater than the width of the second support.
[0007] As a preferred embodiment of this utility model, the width of the first bracket is 25mm and the width of the second bracket is 20mm.
[0008] As a preferred embodiment of this utility model, both the first bracket and the second bracket are welded to the base.
[0009] As a preferred embodiment of this invention, the distance between the first bracket and the second bracket is 286mm.
[0010] As a preferred embodiment of this utility model, the height of both the first bracket and the second bracket is 40mm.
[0011] By adopting the above technical solution, the beneficial effects of this utility model compared with the prior art are:
[0012] This utility model discloses a high-pressure oil rail deflection inspection fixture. While inspecting the product deflection, the fixture can be used to straighten the product directly. After straightening, the product can be directly re-inspected, which reduces the labor intensity of employees, improves the inspection accuracy, and greatly enhances the inspection efficiency and product quality of the inspection workshop. Products inspected by this fixture can be assembled after being processed by customers, thus improving customer satisfaction. Attached Figure Description
[0013] Other objects and results of this invention will become more apparent and readily understood with reference to the following description taken in conjunction with the accompanying drawings, and with a more complete understanding of the invention. In the drawings:
[0014] Figure 1 is a perspective view of an example of this utility model;
[0015] Figure 2 is a side view of an example of this utility model;
[0016] Figure 3 is a top view of an example of this utility model;
[0017] Figure 4 is a cross-sectional view along direction AA in Figure 3;
[0018] Figure 5 is a cross-sectional view along the BB direction in Figure 3;
[0019] The reference numerals in the drawings include: base 1, first bracket 2, second bracket 3, chamfer 4, first arc groove 21, and second arc groove 31. Detailed Implementation
[0020] The technical solutions of various embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0021] 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 component 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 of 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.
[0022] 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. It should be pointed out that all accompanying drawings are exemplary representations. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0023] The present invention will be further described in detail below through specific embodiments and in conjunction with the accompanying drawings.
[0024] Referring to Figures 1 to 5, Figure 1 is a perspective view of an embodiment of the present invention, Figure 2 is a side view of an embodiment of the present invention, Figure 3 is a top view of an embodiment of the present invention, Figure 4 is a cross-sectional view along direction AA in Figure 3, and Figure 5 is a cross-sectional view along direction BB in Figure 3. The present invention provides a high-pressure oil rail deflection inspection fixture, including a base 1 and a feeler gauge (not shown). The upper surface of the base 1 is flat. A first support 2 and a second support 3 are respectively provided on both sides of the base 1. The first support 2 and the second support 3 are both welded to the base 1. The upper edges of the first support 2 and the second support 3... All brackets are provided with chamfers 4. The upper middle part of the first bracket 2 is provided with a first arc-shaped groove 21 with a radius of 15.4 mm. The upper middle part of the second bracket 3 is provided with a second arc-shaped groove 31 with a radius of 9.6 mm. The width of the first bracket 2 is greater than the width of the second bracket 3. In one embodiment, the width of the first bracket 2 is 25 mm and the width of the second bracket 3 is 20 mm. The distance between the first bracket 2 and the second bracket 3 is 286 mm. The height of the first bracket 2 and the second bracket 3 is 40 mm.
[0025] The working principle of this utility model will be explained below with reference to Figures 1 to 5.
[0026] According to the special technical requirements of stainless steel high-pressure hydraulic rail products, the post-forging deflection must be guaranteed to be <0.6 mm. Therefore, each product must be 100% inspected for deflection. Products with unqualified deflection need to be straightened. During the inspection, the fixture is placed on the straightening machine. The two ends of the high-pressure hydraulic rail product are placed on the first support 2 and the second support 3 respectively. The distance between each oil nozzle and the bottom surface of the base 1 is measured with a feeler gauge. If it exceeds 0.6 mm, it is considered a product with out-of-tolerance deflection and needs to be straightened. When the straightening machine is started, the push rod will directly press against the product (the product is still placed on this fixture). After straightening, a re-inspection is performed until the deflection of the product is <0.6 mm.
[0027] This utility model discloses a high-pressure oil rail deflection inspection fixture. While inspecting the product deflection, the fixture can be used to straighten the product directly. After straightening, the product can be directly re-inspected, which reduces the labor intensity of employees, improves the inspection accuracy, and greatly enhances the inspection efficiency and product quality of the inspection workshop. Products inspected by this fixture can be assembled after being processed by customers, thus improving customer satisfaction.
[0028] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.
Claims
1. A high-pressure rail deflection inspection tool, characterized by, The device includes a base and a feeler gauge. The upper surface of the base is flat. A first support and a second support are respectively provided on both sides of the base. The upper edges of the first support and the second support are chamfered. The upper middle part of the first support has a first arc-shaped groove with a radius of 15.4 mm. The upper middle part of the second support has a second arc-shaped groove with a radius of 9.6 mm. The width of the first support is greater than the width of the second support.
2. The high-pressure rail deflection verification tool of claim 1, wherein, The width of the first bracket is 25mm, and the width of the second bracket is 20mm.
3. The high-pressure oil rail deflection inspection fixture according to claim 1, characterized in that, Both the first bracket and the second bracket are welded to the base.
4. The high-pressure rail deflection verification tool of claim 1, wherein, The distance between the first bracket and the second bracket is 286mm.
5. The high-pressure rail deflection verification tool of claim 1, wherein, The height of both the first bracket and the second bracket is 40mm.