A high-pressure oil rail center distance detection tool
By designing a high-pressure oil rail center distance detection fixture, the problems of low detection efficiency and low accuracy were solved, achieving efficient and accurate detection, 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
- 2025-05-15
- Publication Date
- 2026-06-09
Smart Images
Figure CN224340867U_ABST
Abstract
Description
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 center distance detection fixture. Background Technology
[0002] High-pressure fuel rail forgings are mainly used in high-end vehicles with traditional internal combustion engines. The main 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 center distance. To prevent assembly problems after processing, the center distance needs to be 100% inspected to ensure that the center distance after forging meets the tolerance of 205±0.5mm. Currently, a coordinate measuring machine (CMM) can be used to measure this dimension, but the CMM inspection efficiency is very low and cannot meet the production cycle requirements. Alternatively, calipers can be used to measure each rail individually, but this method is labor-intensive, inefficient, and the accuracy is not easily guaranteed.
[0003] Therefore, it is necessary to design a high-pressure oil rail center distance detection fixture to improve the above problems. Utility Model Content
[0004] To address the aforementioned problems in the prior art, this utility model provides a high-pressure oil rail center distance detection 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 center distance detection fixture includes a fixture body. The upper two sides of the fixture body are respectively provided with a first detection groove conforming to a support and a second detection groove conforming to an oil nozzle. A support portion is provided in the middle of the fixture body. The height of the support portion is lower than the upper surface of the fixture body. A first clearance groove and a second clearance groove are provided on both sides of the support portion. The first clearance groove is located adjacent to the first detection groove. The width of the first clearance groove is less than the width of the second clearance groove. The depth of both the first and second clearance grooves is greater than the depth of the second detection groove. The distance between the center point of the first detection groove and the center point of the second detection groove is 205 mm. The outer dimensions of the first detection groove are 0.25 mm larger than the outer dimensions of the support, and the outer dimensions of the second detection groove are 0.25 mm larger than the outer dimensions of the oil nozzle.
[0007] As a preferred embodiment of this invention, the depth of the first detection groove is 26.6 mm, and the depth of the second detection groove is 29 mm.
[0008] As a preferred embodiment of this invention, the depth of both the first clearance groove and the second clearance groove is 29.3 mm.
[0009] By adopting the above technical solution, the beneficial effects of this utility model compared with the prior art are:
[0010] This utility model provides a high-pressure oil rail center distance detection fixture, which reduces the labor intensity of employees, improves the accuracy of inspection, 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
[0011] 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:
[0012] Figure 1 This is a perspective view of an example of this utility model;
[0013] Figure 2 This is a top view of an example of this utility model;
[0014] Figure 3 yes Figure 2 Sectional view along the middle AA direction;
[0015] Figure 4 This is a side view of an example of this utility model;
[0016] The reference numerals in the drawings include: tooling body 1, first detection groove 2, second detection groove 3, support part 4, first clearance groove 5, and second clearance groove 6. Detailed Implementation
[0017] 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.
[0018] 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.
[0019] 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.
[0020] The present invention will be further described in detail below through specific embodiments and in conjunction with the accompanying drawings.
[0021] Reference Figures 1 to 4 , Figure 1 This is a perspective view of an example of this utility model. Figure 2 This is a top view of an example of this utility model. Figure 3 yes Figure 2 Sectional view along the AA direction. Figure 4This is a side view of an embodiment of the present invention. The present invention provides a high-pressure oil rail center distance detection fixture, including a fixture body 1, a first detection groove 2, a second detection groove 3, a support part 4, a first clearance groove 5, and a second clearance groove 6. The first detection groove 2 and the second detection groove 3 are respectively disposed on both sides of the upper part of the fixture body 1. The first detection groove 2 is similar in shape to the bracket of the high-pressure oil rail forging, and the second detection groove 3 is similar in shape to the oil nozzle of the high-pressure oil rail forging. The support part 4 is disposed in the middle of the fixture body 1 and is used to support the high-pressure oil rail forging. The height of the support part 4 is lower than the upper surface of the fixture body 1. The first clearance groove 5 and the second clearance groove 6 are respectively disposed on both sides of the support part 4 and are used to avoid corresponding components of the high-pressure oil rail forging. The first clearance groove 5 is disposed adjacent to the first detection groove 2. The second clearance groove 6 is located adjacent to the second detection groove 3. The width of the first clearance groove 5 is smaller than the width of the second clearance groove 6. The depths of both the first clearance groove 5 and the second clearance groove 6 are greater than the depth of the second detection groove 3. The distance between the center point of the first detection groove 2 and the center point of the second detection groove 3 is 205mm. The outer dimensions of the first detection groove 2 are 0.25mm larger than the outer dimensions of the bracket, and the outer dimensions of the second detection groove 3 are 0.25mm larger than the outer dimensions of the nozzle. This is based on the tolerance requirement of ±0.5mm, which enlarges one side of the detection bracket and the nozzle position by 0.25mm, while also satisfying the theoretical relative center distance of 205mm. During inspection, the workpiece only needs to be placed in the center distance detection fixture. If it can be placed in, it proves that the tolerance requirement of 205±0.5mm is met; otherwise, it is a defective product. In one specific embodiment, the depth of the first detection groove 2 is 26.6 mm, the depth of the second detection groove 3 is 29 mm, the depth of the first clearance groove 5 and the second clearance groove 6 is 29.3 mm, and the support part 4 is 8.3 mm lower than the upper surface of the tooling body 1.
[0022] The following will refer to Figures 1 to 4 The working principle of this utility model will be explained.
[0023] During inspection, the high-pressure oil rail forging is placed on the inspection fixture in the correct positions: the nozzle part is placed in the second inspection groove 3, and the bracket part is placed in the first inspection groove 2. If it fits properly, it meets the tolerance requirement of 205±0.5mm; otherwise, it is a defective product. The entire inspection process is not only simple to operate but also ensures inspection accuracy and speed, greatly saving inspection time and improving work efficiency. Products inspected by this fixture can be assembled after customer processing, improving customer satisfaction.
[0024] 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 oil rail center distance detection tool, characterized in that, The tool body is provided with a first detection groove shaped with the support and a second detection groove shaped with the oil nozzle on both sides of the upper part of the tool body, the middle part of the tool body is provided with a support part, the height of the support part is lower than the upper surface of the tool body, both sides of the support part are provided with a first avoiding groove and a second avoiding groove, the first avoiding groove is arranged close to the first detection groove, the width of the first avoiding groove is smaller than the width of the second avoiding groove, the depth of the first avoiding groove and the second avoiding groove is greater than the depth of the second detection groove, the distance between the center point of the first detection groove and the center point of the second detection groove is 205mm, the outer dimension of the first detection groove is greater than the outer dimension of the support by 0.25mm, and the outer dimension of the second detection groove is greater than the outer dimension of the oil nozzle by 0.25mm.
2. The high-pressure oil rail center distance detection tool of claim 1, wherein, The depth of the first detection groove is 26.6mm, and the depth of the second detection groove is 29mm.
3. The high-pressure oil rail center distance detection tool of claim 1, wherein, The depth of the first avoiding groove and the second avoiding groove is 29.3mm.